Merge pull request #2815 from sirrayi/fix/zip-untrusted-sizes

🤖 Agent: read the diff at ce848af06: zip hardening: the raw buffer's capacity is capped at the archive length and inflate at 1 GiB with saturating maths, so a zip64 entry claiming u64::MAX/2 errs instead of aborting; real packs are unchanged (the limit stays size*2+1024 below 1 GiB). Test included. verify green; no harness reaches it. Queued for the merger, which waits for this head's parity run.
Merge pull request #2808 from levzzz5154/fix/shulker-body-yaw
2026-11-07 11:06:11 -10:00 · 2026-10-28 18:39:20 +01:00 · 2026-10-28 18:35:28 +01:00 · 2026-10-28 18:35:22 +01:00 · 2026-10-28 18:35:13 +01:00 · 2026-10-28 18:35:09 +01:00
405 changed files with 19345 additions and 3166 deletions
@@ -0,0 +1,9 @@
+# Trusted reviewers: one list for two things (docs/release-flow.md "Trusted reviewers").
+# - `/nightly 2640 2642` picks the pull requests the Nightly holds (tools/ci/nightly_set.py);
+# - `/close`, `/reopen`, `/label`, `/unlabel` triage issues and pull requests (tools/ci/triage_command.py).
+# Ludovic is always allowed and isn't listed. One GitHub login per line, with who added it and when. Removing a
+# line revokes that login at once. A line with only `paused` stops both for every reviewer (Ludovic's still work).
+kacpherek    # added by Ludovic, 2026-10-27
+rdbtCVS      # added by Ludovic, 2026-10-27
+Online5277   # added by Ludovic, 2026-10-27 (his top three by merged pull requests)
+levzzz5154   # added by Ludovic, 2026-10-28 (Horizon Team; author of horizon-mixins)
@@ -19,6 +19,15 @@ on:
        description: A nightly's "<date> <short sha>" (HORIZON_NIGHTLY), shown by the game; empty for a release
        type: string
        default: ''
+      trusted:
+        # Only release.yml says true: it builds main. A nightly can hold pull requests nobody reviewed yet, whose
+        # build scripts and tests run here and could rewrite target/, the cargo home or a compiler cache. So an
+        # untrusted build never runs on the release runner, never saves the Rust cache (its key is its own anyway),
+        # and a trusted one never reads the machine's shared sccache, which pull requests' jobs write
+        # (tests/test_nightly.py pins all of it).
+        description: The source is main (a release); false for anything else (a nightly)
+        type: boolean
+        default: false
      developer_id:
        description: Sign the macOS programs with Developer ID and notarize the zip (the runner's keychain)
        type: boolean
@@ -27,8 +36,10 @@ permissions:
  contents: read
 jobs:
  exporters:
-    # This runner holds the maintainer's own pinned Minecraft jars. Only our classes leave it.
-    runs-on: ${{ vars.MAC_RUNNER || 'ludovics-mac-mini' }}
+    # This runner holds the maintainer's own pinned Minecraft jars. Only our classes leave it. An untrusted build
+    # goes to the Mac mini runner that already runs pull requests' parity jobs (macOS + horizon-game:
+    # ludovics-mac-mini), never the release runner (MAC_RUNNER: ludovics-mac-mini-release) nor parity-main's.
+    runs-on: ${{ inputs.trusted && vars.MAC_RUNNER || fromJSON('["self-hosted", "macOS", "horizon-game"]') }}
    # Three full preparations (two isolated, one batched) besides the compile.
    timeout-minutes: 60
    steps:
@@ -39,6 +50,8 @@ jobs:
          clean: true
      - uses: dtolnay/rust-toolchain@stable
      - run: bash tools/ci/runner-env.sh
+        env:
+          HORIZON_NO_SCCACHE: ${{ inputs.trusted && '1' || '' }}
      - run: bash tools/ci/vanilla-data.sh
      - name: Compile and validate original exporters against the pinned jars
        shell: bash
@@ -90,7 +103,7 @@ jobs:
            mac: true
            dir: horizon-macos-arm64
            asset: horizon-macos-arm64.zip
-    runs-on: ${{ matrix.mac && (vars.MAC_RUNNER || 'ludovics-mac-mini') || matrix.os }}
+    runs-on: ${{ matrix.mac && (inputs.trusted && vars.MAC_RUNNER || fromJSON('["self-hosted", "macOS", "horizon-game"]')) || matrix.os }}
    # Notarizing the zip can take a few minutes.
    timeout-minutes: ${{ matrix.mac && 60 || 40 }}
    env:
@@ -117,7 +130,9 @@ jobs:
      - uses: Swatinem/rust-cache@v2
        if: runner.environment == 'github-hosted'
        with:
-          shared-key: release-${{ matrix.name }}
+          # A release restores only what a release saved: an untrusted build has its own key and saves nothing.
+          shared-key: ${{ inputs.trusted && 'release' || 'nightly' }}-${{ matrix.name }}
+          save-if: ${{ inputs.trusted }}
      - name: ALSA and udev headers
        if: runner.os == 'Linux'
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
@@ -173,6 +188,8 @@ jobs:
          done
      - name: Tools from the runner
        if: runner.environment == 'self-hosted'
+        env:
+          HORIZON_NO_SCCACHE: ${{ inputs.trusted && '1' || '' }}
        run: bash tools/ci/runner-env.sh
      - name: Resources prepared from the runner's own Minecraft
        if: runner.environment == 'self-hosted'
@@ -1,13 +1,23 @@
 name: nightly build
-# The opt-in Nightly channel (docs/release-flow.md "Nightly"; Ludovic, 2026-10-27). Once a night it builds the newest
-# union branch on origin (union/<agent>-<name>: main plus pull requests the contribution gate proved together), or
-# main when no union is newer, and publishes it as the `nightly` pre-release. Launchers install it only for players
-# who turn Nightly on. The previous nightly stays a week as nightly-<date>.
+run-name: nightly build${{ inputs.request && format(' (request {0})', inputs.request) || '' }}
+# The opt-in Nightly channel (docs/release-flow.md "Nightly"; Ludovic, 2026-10-27). Once a night, and when a trusted
+# reviewer asks (`/nightly 2640 2642`, nightly-command.yml), it builds main plus the pull requests the reviewers
+# picked, merged in order (tools/ci/nightly_set.py). With none picked, it builds the newest union branch on origin
+# (union/<agent>-<name>: main plus pull requests the contribution gate proved together), or main when no union is
+# newer. It publishes the result as the `nightly` pre-release. Launchers install it only for players who turn Nightly
+# on. The previous nightly stays a week as nightly-<date>.
 #
-# Why the signing key never meets the union's code:
+# Why the signing key never meets the pull requests' code:
+# - `pick` merges the picked heads onto main with `git merge-tree --write-tree`: git objects only, no working tree,
+#   so none of their files reaches the disk and no hook, filter or script of theirs runs. It refuses any pull
+#   request that changes a path CODEOWNERS gives to Ludovic (this folder, tools/ci/, the signing and update code),
+#   pushes the merge as nightly/build-<date>-<n> and saves the set on the nightly-state branch.
 # - This file, game-build.yml and every script below run from main's copy: a schedule runs the default branch, and
 #   `uses: ./…` takes the caller's commit. The union's own .github/ is never read.
-# - `build` (game-build.yml) checks out and compiles the union with no secrets: its token reads contents only and
+# - `build` (game-build.yml, `trusted: false`) never reaches a release's tools: its macOS jobs run on the runner
+#   that already runs pull requests' parity jobs, never the release runner; its Rust cache has its own key and is
+#   never saved; and releases don't read the machine's shared sccache.
+# - `build` (game-build.yml) checks out and compiles the merge (or the union) with no secrets: its token reads contents only and
 #   isn't kept in the checkout; the macOS programs are signed ad hoc (Developer ID needs the runner's keychain,
 #   which stays locked for nightlies).
 # - `sign` is the only job with RELEASE_SIGNING_KEY. It checks out nothing but main's tools/ci/sign_release.sh, which
@@ -15,6 +25,9 @@ name: nightly build
 #   names the channel ("horizon release nightly"), so a nightly's signature can't pass for a release's.
 # - `publish` verifies the signature with main's horizon-release-sign, checks the smoke test, and only then moves
 #   the tag. Like sign, it never executes what build produced.
+# - The source ships with the build: `pick` writes horizon-source.tar.gz with `git archive` (git objects again, nothing
+#   run), `sign` signs it with the builds, and `publish` attaches it and tags the commit nightly-source/<date>-<short>
+#   for good (the dated release and the build branch go after 7 days; native mods pin the commit: docs/native-mods.md).
 #   gh workflow run "nightly build"                     # now (skips when the pick is the same commit as last night's)
 #   gh workflow run "nightly build" -f force=true       # build and publish even if unchanged
 #   gh workflow run "nightly build" -f dry_run=true     # build and sign with a throwaway key, publish nothing
@@ -31,22 +44,42 @@ on:
        description: Build and sign with a throwaway key, publish nothing
        type: boolean
        default: false
+      issue:
+        description: The issue or pull request whose `/nightly` comment asked for this build (answered there)
+        type: string
+        default: ''
+      request:
+        description: The command's id, in the run's name so it can link the run
+        type: string
+        default: ''
+      prs:
+        description: A dry run's own set, `2640@<head> 2642@<head>` (the saved set stays)
+        type: string
+        default: ''
 permissions:
  contents: read
 concurrency:
+  # One build at a time. A newer request replaces one still waiting: it builds the set as it is by then, so no pick
+  # is lost.
  group: nightly-build
  cancel-in-progress: false
 jobs:
  pick:
    runs-on: ubuntu-latest
    timeout-minutes: 10
+    permissions:
+      contents: write       # nightly/build-<date>-<n> and the nightly-state branch (main is protected)
+      issues: write         # says in the thread when the picked pull requests conflict
+      pull-requests: write
    outputs:
      build: ${{ steps.pick.outputs.build }}
      sha: ${{ steps.pick.outputs.sha }}
+      short: ${{ steps.pick.outputs.short }}
      source: ${{ steps.pick.outputs.source }}
      date: ${{ steps.pick.outputs.date }}
      version: ${{ steps.pick.outputs.version }}
      nightly: ${{ steps.pick.outputs.nightly }}
+      source_tag: ${{ steps.pick.outputs.source_tag }}
      dry_run: ${{ steps.mode.outputs.dry_run }}
    steps:
      - uses: actions/checkout@v4
@@ -60,9 +93,32 @@ jobs:
        env:
          GH_TOKEN: ${{ github.token }}
          FORCE: ${{ (inputs.force || steps.mode.outputs.dry_run == 'true') && 'yes' || '' }}
+          DRY_RUN: ${{ steps.mode.outputs.dry_run }}
+          NIGHTLY_ISSUE: ${{ inputs.issue }}
+          NIGHTLY_PRS: ${{ inputs.prs }}
        run: |
          python3 tools/ci/nightly.py pick ${FORCE:+--force} | tee -a "$GITHUB_STEP_SUMMARY"
          { echo; cat nightly-notes.md; } >> "$GITHUB_STEP_SUMMARY"
+      - name: Old nightly/build-* branches deleted (scheduled runs only)
+        # Ludovic, 2026-10-27: older than 7 days, but never the newest build or one a published nightly points to;
+        # nothing but nightly/build-* (nightly.py stale_builds, tests/test_nightly.py).
+        if: github.event_name == 'schedule'
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          { echo "### nightly/build-* branches"; python3 tools/ci/nightly.py prune-builds --days 7; } | tee -a "$GITHUB_STEP_SUMMARY"
+      - name: The source of the build (horizon-source.tar.gz)
+        if: steps.pick.outputs.build == 'true'
+        env:
+          SHA: ${{ steps.pick.outputs.sha }}
+        run: git archive --format=tar.gz --prefix="horizon-${SHA:0:7}/" -o horizon-source.tar.gz "$SHA"
+      - uses: actions/upload-artifact@v4
+        if: steps.pick.outputs.build == 'true'
+        with:
+          name: horizon-source
+          path: horizon-source.tar.gz
+          if-no-files-found: error
+          retention-days: 3
      - uses: actions/upload-artifact@v4
        with:
          name: nightly-notes
@@ -78,6 +134,7 @@ jobs:
      version: ${{ needs.pick.outputs.version }}
      nightly: ${{ needs.pick.outputs.nightly }}
      developer_id: false
+      trusted: false  # it can hold unreviewed pull requests: their own cache key, never saved, not the release runner

  sign:
    needs: [pick, build]
@@ -103,7 +160,7 @@ jobs:
          EPHEMERAL: ${{ needs.pick.outputs.dry_run == 'true' && 'yes' || '' }}
        run: |
          bash tools/ci/sign_release.sh nightly dist/horizon-linux-x86_64.tar.gz dist/horizon-windows-x64.zip \
-            dist/horizon-macos-arm64.zip dist/horizon-server-linux-x86_64.tar.gz
+            dist/horizon-macos-arm64.zip dist/horizon-server-linux-x86_64.tar.gz dist/horizon-source.tar.gz
      - uses: actions/upload-artifact@v4
        with:
          name: signature
@@ -146,6 +203,7 @@ jobs:
          GH_TOKEN: ${{ github.token }}
          SHA: ${{ needs.pick.outputs.sha }}
          DATE: ${{ needs.pick.outputs.date }}
+          SOURCE_TAG: ${{ needs.pick.outputs.source_tag }}
        run: |
          set -euo pipefail
          python3 tools/ci/nightly.py rotate
@@ -157,10 +215,42 @@ jobs:
            "dist/horizon-windows-x64.zip#Nightly game files: Windows (horizon-windows-x64.zip)" \
            "dist/horizon-macos-arm64.zip#Nightly game files: macOS (horizon-macos-arm64.zip)" \
            "dist/horizon-server-linux-x86_64.tar.gz#Nightly dedicated server for Linux (horizon-server-linux-x86_64.tar.gz)" \
+            "dist/horizon-source.tar.gz#Source of this Nightly, commit ${SHA:0:7} (horizon-source.tar.gz; kept for good as the tag $SOURCE_TAG)" \
            dist/SHA256SUMS "${signature[@]}" dist/smoke-test.json
+          python3 tools/ci/nightly.py keep-source "$SHA" "$DATE"
          python3 tools/ci/nightly.py prune --days 7
      - name: Dry run, the nightly that would be published
        if: needs.pick.outputs.dry_run == 'true'
        run: |
          echo "Would publish nightly at ${{ needs.pick.outputs.sha }} (${{ needs.pick.outputs.source }})"
          ls -l dist
+
+  answer:
+    # Tells the thread that asked for this build how it ended. A conflict `pick` already explained there.
+    needs: [pick, build, sign, publish]
+    if: always() && inputs.issue != '' && needs.pick.result == 'success'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - env:
+          GH_TOKEN: ${{ github.token }}
+          ISSUE: ${{ inputs.issue }}
+          BUILD: ${{ needs.pick.outputs.build }}
+          PUBLISHED: ${{ needs.publish.result }}
+          DRY_RUN: ${{ needs.pick.outputs.dry_run }}
+          NAME: Nightly ${{ needs.pick.outputs.date }} · ${{ needs.pick.outputs.short }}
+          RUN: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+        run: |
+          if [[ "$BUILD" != true ]]; then
+            text="nothing new: the published Nightly is already this build."
+          elif [[ "$PUBLISHED" == success && "$DRY_RUN" == true ]]; then
+            text="the dry run built and signed $NAME; nothing was published. $RUN"
+          elif [[ "$PUBLISHED" == success ]]; then
+            text="published $NAME: https://github.com/$GITHUB_REPOSITORY/releases/tag/nightly. Launchers with Nightly on install it at their next start."
+          else
+            text="the build failed, nothing was published: $RUN"
+          fi
+          gh api "repos/$GITHUB_REPOSITORY/issues/$ISSUE/comments" -f body="🤖 Nightly: $text"
@@ -0,0 +1,46 @@
+name: nightly command
+# `/nightly …` comments: the trusted reviewers in .github/trusted-reviewers.txt (and Ludovic) pick the pull requests
+# the Nightly holds (docs/release-flow.md "Nightly channel", tools/ci/nightly_set.py). This job only checks who asked,
+# saves the set on the nightly-state branch, starts `nightly build` and answers in the thread.
+#
+# Why no pull request's code runs here, though the token can write:
+# - `issue_comment` always runs this file from main, whoever comments and wherever; a pull request's own copy of it
+#   is never read.
+# - It checks out main and runs main's nightly_set.py. The comment's text and author reach it as env vars, never in
+#   a shell line.
+# - It never checks out, fetches or merges a pull request: it reads their file lists through the API. The merge
+#   happens in nightly-build.yml's `pick`, with git objects only; their code runs in its `build`, without secrets.
+on:
+  issue_comment:
+    types: [created]
+permissions:
+  contents: read
+jobs:
+  command:
+    # Every other comment skips here, before a runner starts.
+    if: startsWith(github.event.comment.body, '/nightly') && github.event.comment.user.type != 'Bot'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: write       # the nightly-state branch (main is protected)
+      actions: write        # starts `nightly build`
+      issues: write         # answers in the thread
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: main
+          persist-credentials: false
+          sparse-checkout: |
+            .github/CODEOWNERS
+            .github/trusted-reviewers.txt
+            tools/ci/nightly_set.py
+          sparse-checkout-cone-mode: false
+      - name: Run the command
+        env:
+          GH_TOKEN: ${{ github.token }}
+          BODY: ${{ github.event.comment.body }}
+          AUTHOR: ${{ github.event.comment.user.login }}
+          ISSUE: ${{ github.event.issue.number }}
+          COMMENT_URL: ${{ github.event.comment.html_url }}
+        run: python3 tools/ci/nightly_set.py command
@@ -90,6 +90,7 @@ jobs:
    with:
      ref: ${{ needs.decide.outputs.head }}
      version: ${{ needs.decide.outputs.version }}
+      trusted: true  # main: the release runner, the release cache, no shared sccache

  sign:
    needs: [decide, build]
@@ -0,0 +1,48 @@
+name: triage command
+# `/close`, `/reopen`, `/label`, `/unlabel` comments: the trusted reviewers in .github/trusted-reviewers.txt (and
+# Ludovic) triage issues and pull requests without any repository role (docs/release-flow.md "Trusted reviewers",
+# tools/ci/triage_command.py).
+#
+# Why no pull request's code runs here, though the token can write:
+# - `issue_comment` always runs this file from main, whoever comments and wherever.
+# - It checks out main's script and list only, never a pull request; it reads threads through the API.
+# - The comment's text and author reach the script as env vars, never in a shell line. The token stays in the step.
+on:
+  issue_comment:
+    types: [created]
+permissions:
+  contents: read
+jobs:
+  command:
+    # Every other comment skips here, before a runner starts.
+    if: >-
+      github.event.comment.user.type != 'Bot' && (
+      startsWith(github.event.comment.body, '/close') ||
+      startsWith(github.event.comment.body, '/reopen') ||
+      startsWith(github.event.comment.body, '/label') ||
+      startsWith(github.event.comment.body, '/unlabel'))
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: read
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: main
+          persist-credentials: false
+          sparse-checkout: |
+            .github/trusted-reviewers.txt
+            tools/ci/nightly_set.py
+            tools/ci/triage_command.py
+          sparse-checkout-cone-mode: false
+      - name: Run the command
+        env:
+          GH_TOKEN: ${{ github.token }}
+          BODY: ${{ github.event.comment.body }}
+          AUTHOR: ${{ github.event.comment.user.login }}
+          ISSUE: ${{ github.event.issue.number }}
+          REPO: ${{ github.repository }}
+          COMMENT_URL: ${{ github.event.comment.html_url }}
+        run: python3 tools/ci/triage_command.py command
@@ -35,9 +35,11 @@ Game workspace (root `Cargo.toml`); `launcher/` and `crates/horizon-telemetry-se

 | Crate | Owns |
 |---|---|
-| `horizon-client` | The game: a lib (`src/lib.rs`, ~180 flat modules) and the bin (`src/main.rs` → `game.rs` + `game/`), plus `horizon-ctl` (`src/bin/horizon-ctl/`). Also the dedicated server (`--dedicated`) |
+| `horizon-client` | The game: a lib (`src/lib.rs`, ~170 flat modules) and the bin (`src/main.rs` → `game.rs` + `game/`), plus `horizon-ctl` (`src/bin/horizon-ctl/`). Also the dedicated server (`--dedicated`) |
+| `horizon-items` | Blocks and items below gameplay: `blocks.rs` (block facts), `items.rs`, `item_data.rs` (components), `enchant.rs`, `cooldowns.rs`, `bundle.rs`, `item_nbt.rs`. Re-exported as `horizon_client::items`... |
 | `horizon-command` | Command parsing (Brigadier): the vanilla tree, argument types, selectors, suggestions, the tree's network form. Re-exported as `horizon_client::command` |
 | `horizon-client-core` | The client lib's bottom layer: `text.rs`, `lang.rs`, `snbt.rs`, `nbt_path.rs`, `component.rs`, `scoreboard.rs`, `bossbar.rs`, `gamerules.rs`, `block_entity_nbt.rs`, registry/particle/sound tables. Re-exported under the old paths (`horizon_client::text`...) |
+| `horizon-client-input` | Key bindings and key names, toggle keys, mouse options, controller settings and glyphs, the clipboard, window options (`keybinds.rs`, `gamepad.rs`, `mouse.rs`, `window.rs`...). Re-exported under the old paths |
 | `horizon-world` | Vanilla world data with no gameplay loop: NBT, regions, chunks, `datafix/`, `worldgen/`, `level/` (server-side block behaviour, ticks, redstone), entity physics, items, effects, food, damage |
 | `horizon-core` | Simulation primitives: Java `Random`s, `jmath` (HotSpot-exact `Math`), positions, noise, density, paletted storage, `version.rs` (the pinned version) |
 | `horizon-protocol` | Network protocol 777: codecs, framing, encryption, `packets/{handshake,status,login,configuration,play}.rs`, `entity_data.rs` |
@@ -57,7 +59,7 @@ Game workspace (root `Cargo.toml`); `launcher/` and `crates/horizon-telemetry-se

 Other top-level folders: `tools/` (harnesses and dev scripts), `tests/` (Python unit tests: `python3 -m
 unittest discover -s tests`), `mods/horizon/src/test/java/dev/horizonlab/parity/` (Java oracles),
-`docs/`, `.github/workflows/`. The website (playhorizon.dev) is the private ludovic111/horizon-site: its build
+`docs/`, `.github/workflows/`. The website (playhorizon.dev) is the private horizon-rust/horizon-site: its build
 reads `README.md`, `launcher/links.json`, `docs/api/`, `roadmap/roadmap.json` and `crates/horizon-theme/tokens.css` from main.

 ## Build and test fast
@@ -113,14 +115,14 @@ python3 tools/agent_control_e2e.py         # horizon-ctl / MCP end to end

 | Subsystem | Files |
 |---|---|
-| Game loop, tick, frame | `game.rs`: `fn run`, `impl ApplicationHandler for Game` (`window_event`, `about_to_wait`), `fn tick`, `fn tick_world`, `fn render`; L: `clock.rs`, `window.rs`, `spans.rs` |
+| Game loop, tick, frame | `game.rs`: `fn run`, `impl ApplicationHandler for Game` (`window_event`, `about_to_wait`), `fn tick`, `fn tick_world`, `fn render`; L: `clock.rs`, `spans.rs`; `horizon-client-input/src/window.rs` |
 | Rendering | L: `gfx.rs` (`Renderer::new`, `Renderer::render`), `gfx/` (cull, occlusion, translucency, upload, timing, lod, weather, stars, end_sky), `*.wgsl`, `particles.rs`, `block_entity_render.rs`, `item_render.rs`, `fog.rs`, `clouds.rs`, `camera.rs`, `first_person.rs`; G: `render_tick.rs`, `item_draw.rs` |
 | Chunks, streaming, light | L: `streaming.rs` (worker pool: generate, light, mesh), `world.rs`, `chunk.rs`, `chunk_map.rs`, `light.rs`, `mesher.rs` + `mesher/`, `vanillagen.rs` (binds horizon-world's generator), `lod.rs` + `lod/`, `ticket_levels.rs`; G: `world_loading.rs`, `postprocess.rs`; game.rs `fn update_world` |
 | World generation | `crates/horizon-world/src/worldgen/` (`generator*.rs`, `feature_graph.rs`, `structure/`, `carver/`) |
 | Block behaviour | `crates/horizon-world/src/level/` (`mod.rs`, `tick.rs`, `hooks.rs`, `redstone.rs`, `place.rs`, `interact.rs`); game.rs `fn tick_blocks`, `fn process_level_events` |
 | Mobs | L: `mobs.rs` (types), `mobs/` (`ai.rs`, `goals.rs`, `brain.rs`, `*_brain.rs`, `nav.rs`, `path.rs`, `species.rs`, `spawning.rs`, `render.rs`, `anim.rs`); G: `creatures.rs` (ticking, spawning, mob events), one file per mob family (`dragon.rs`, `wither.rs`, `villagers.rs`, `piglins.rs`, `golems.rs`...), `natural_spawning.rs` |
 | Other entities | L: `entities.rs`, `projectiles.rs`, `arrows.rs`; G: `boats.rs`, `minecarts.rs`, `mounts.rs`, `armor_stands.rs`, `paintings.rs`, `frames.rs`, `fireworks.rs`, `tnt.rs`, `explosion.rs` |
-| Player actions | game.rs (`fn use_hand`, `fn use_item`, `fn attack`, `fn tick_mining`, `fn break_block`); G: `hand.rs`, `combat.rs`, `consume.rs`, `potions.rs`, `shield.rs`, `crossbow.rs`, `trident.rs`, `fishing.rs`; L: `motion.rs` + `motion/` (movement), `collisions.rs`, `items.rs`, `item_data.rs` |
+| Player actions | game.rs (`fn use_hand`, `fn use_item`, `fn attack`, `fn tick_mining`, `fn break_block`); G: `hand.rs`, `combat.rs`, `consume.rs`, `potions.rs`, `shield.rs`, `crossbow.rs`, `trident.rs`, `fishing.rs`; L: `motion.rs` + `motion/` (movement), `collisions.rs`; crate `horizon-items`: `items.rs`, `item_data.rs`, `enchant.rs`, `blocks.rs` |
 | Inventory and containers | L: `menu.rs` (`AbstractContainerMenu.clicked`), `container_screen.rs`, `containers.rs`, `creative.rs`, `crafting.rs`, `recipe_book*.rs`, `stations.rs`, `merchant.rs`; game.rs `fn menu_ops`, `fn click_inventory`; G: `stations.rs`, `trading.rs`, `recipe_book.rs`, `machines.rs` |
 | Commands | parse: crate `horizon-command` (`args.rs`, `selector.rs`, `tree_*.rs`, `vanilla.rs`); run: G: `commands.rs` (dispatch) + `commands/*.rs` (`admin`, `execute`, `items`, `players`, `world_cmds`...); L: `scoreboard_cmd.rs`, `data_cmd.rs`; `horizon-client-core`: `nbt_path.rs`, `scoreboard.rs`; G: `functions.rs`, `command_blocks.rs` |
 | UI screens | `Screen` enum in game.rs; L: `title.rs` + `title/`, `options_ui.rs`, `multiplayer.rs`, `pack_screen.rs`, `graphics_ui.rs`, `screen_draw.rs`, `ui.rs` (widgets), `hud.rs`, `hud_layout.rs`, `hud_overlays.rs`, `chat.rs`, `tab_list.rs`; G: `startup_menu.rs`, `screens.rs` (pause, death), `options.rs`, `lan_screen.rs`, `chat.rs`, `sign_edit.rs`, `books.rs` |
@@ -129,7 +131,7 @@ python3 tools/agent_control_e2e.py         # horizon-ctl / MCP end to end
 | Integrated server | G: `integrated.rs` (the server thread), `levels.rs` (one level per dimension, `fn tick_server`), `server_travel.rs` |
 | Dedicated server | G: `dedicated.rs`, `dedicated/status.rs`; crates `horizon-server-files`, `horizon-server` |
 | Save and load | L: `save.rs` (level.dat, regions, playerdata), `entity_nbt.rs`, `options_file.rs`; `horizon-client-core/src/block_entity_nbt.rs`; G: `saving.rs`, `persist.rs` (entities); `crates/horizon-world/src/{region.rs,nbt.rs,datafix/}` |
-| Input | game.rs `fn window_event`, `fn key_pressed`, `fn play_mouse`; L: `keybinds.rs`, `keymapping.rs`, `key_names.rs`, `mouse.rs`, `input.rs`, `interaction_input.rs`, `gamepad.rs`, `osk.rs`, `clipboard.rs`; G: `pad.rs`, `pad_menu.rs` |
+| Input | game.rs `fn window_event`, `fn key_pressed`, `fn play_mouse`; crate `horizon-client-input` (`keybinds.rs`, `keymapping.rs`, `key_names.rs`, `mouse.rs`, `input.rs`, `interaction_input.rs`, `gamepad.rs`, `clipboard.rs`); L: `osk.rs`; G: `pad.rs`, `pad_menu.rs` |
 | Audio | L: `audio.rs` (mixer), `sound_engine.rs`, `sound_events.rs`, `music.rs`, `ambience.rs`; G: `music.rs`, `subtitle_hud.rs` |
 | Resource packs | L: `packs.rs` + `packs/`, `pack_screen.rs`, `atlas_sources.rs`, `sprites.rs`, `mipmap.rs`, `model_library.rs`, `font.rs`; `horizon-client-core/src/lang.rs`; crate `horizon-assets`; G: `packs.rs` |
 | Agent control | L: `control.rs` (socket), `bin/horizon-ctl/`; G: `control.rs`, `agent.rs`, `events.rs`, `ui_control.rs` ([docs/agent-control.md](docs/agent-control.md)) |
@@ -86,6 +86,9 @@ configuration and toolchain changes select the whole workspace; CI also keeps it
  release notes), `skip-release` when players see no change (tooling, docs, tests), nothing for a fix.
  `release-now` is for crash fixes that shouldn't wait. pr_ready suggests one.

+Who reviews and merges: the Horizon Team, on CI for ordinary pull requests; risky ones (saves, network, world
+generation, the launcher's updates) wait for a local proof first ([merging](docs/release-flow.md#merging)).
+
 Every merge to main is released automatically ([release flow](docs/release-flow.md)), so main always stays playable.
 How agents, checks, releases and signed updates keep this safe: [security](docs/security.md).

@@ -98,5 +101,5 @@ new pushes, we add it again.

 ## Talk to us

-[Discord](https://discord.gg/HcTeMZxe5E) for questions and ideas, [issues](https://github.com/ludovic111/horizon/issues)
+[Discord](https://discord.gg/HcTeMZxe5E) for questions and ideas, [issues](https://github.com/horizon-rust/horizon/issues)
 for bugs. If you want to take something on, say so in its issue so nobody else starts the same work.
@@ -1370,7 +1370,6 @@ name = "horizon-client"
 version = "0.1.0"
 dependencies = [
 "ab_glyph",
- "arboard",
 "bytemuck",
 "chrono",
 "cpal",
@@ -1380,11 +1379,13 @@ dependencies = [
 "horizon-assets",
 "horizon-bench",
 "horizon-client-core",
+ "horizon-client-input",
 "horizon-command",
 "horizon-core",
 "horizon-dualsense",
 "horizon-friends",
 "horizon-hdr",
+ "horizon-items",
 "horizon-mods",
 "horizon-protocol",
 "horizon-server-files",
@@ -1421,6 +1422,18 @@ dependencies = [
 "serde_json",
 ]

+[[package]]
+name = "horizon-client-input"
+version = "0.1.0"
+dependencies = [
+ "arboard",
+ "horizon-client-core",
+ "horizon-dualsense",
+ "horizon-theme",
+ "png",
+ "winit",
+]
+
 [[package]]
 name = "horizon-command"
 version = "0.1.0"
@@ -1469,6 +1482,17 @@ dependencies = [
 "wgpu",
 ]

+[[package]]
+name = "horizon-items"
+version = "0.1.0"
+dependencies = [
+ "horizon-client-core",
+ "horizon-core",
+ "horizon-world",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "horizon-mod-sdk"
 version = "0.1.0"
@@ -3182,9 +3206,9 @@ dependencies = [

 [[package]]
 name = "rustls-webpki"
-version = "0.103.15"
+version = "0.103.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3c3cf1d8b1e7d4927e2d154c3fcb02979afb9939629c62cd9048d4f07b60ac2"
+checksum = "4443b1b6d39d7c663139942cc4558262562d2c84123bb6282ef177009ca8b281"
 dependencies = [
 "ring",
 "rustls-pki-types",
@@ -4362,14 +4386,14 @@ version = "0.26.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
 dependencies = [
- "webpki-roots 1.0.9",
+ "webpki-roots 1.0.10",
 ]

 [[package]]
 name = "webpki-roots"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dcd9d09a39985f5344844e66b0c530a33843579125f23e21e9f0f220850f22a"
+checksum = "1c1c8e20c8a38fc7d65abfe74eb7280e4aa667e8eec8bc84996d2874810748d9"
 dependencies = [
 "rustls-pki-types",
 ]
@@ -8,7 +8,9 @@ members = [
    "crates/horizon-world",
    "crates/horizon-client",
    "crates/horizon-client-core",
+    "crates/horizon-client-input",
    "crates/horizon-command",
+    "crates/horizon-items",
    "crates/horizon-server-files",
    "crates/horizon-server",
    "crates/horizon-bots",
@@ -1,6 +1,6 @@
 MIT License

-Copyright (c) 2026 Ludovic
+Copyright (c) 2026 Ludovic Marie and the Horizon contributors

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -3,7 +3,7 @@
 </p>

 <p align="center">
-  <a href="https://github.com/ludovic111/horizon/actions/workflows/ci.yml"><img src="https://github.com/ludovic111/horizon/actions/workflows/ci.yml/badge.svg?branch=main" alt="CI"></a>
+  <a href="https://github.com/horizon-rust/horizon/actions/workflows/ci.yml"><img src="https://github.com/horizon-rust/horizon/actions/workflows/ci.yml/badge.svg?branch=main" alt="CI"></a>
  <img src="https://img.shields.io/badge/Minecraft-Java%2026.3-5D9C3F" alt="Minecraft Java 26.3">
  <img src="https://img.shields.io/badge/Rust-stable-B7410E?logo=rust&logoColor=white" alt="Rust">
  <img src="https://img.shields.io/badge/vanilla%20parity-100%25-F0795A" alt="Vanilla parity 100%">
@@ -15,7 +15,7 @@
  <a href="https://playhorizon.dev"><b>Website</b></a> ·
  <a href="#download"><b>Download</b></a> ·
  <a href="https://playhorizon.dev/docs/"><b>Documentation</b></a> ·
-  <a href="https://github.com/ludovic111/horizon/releases"><b>Release notes</b></a> ·
+  <a href="https://github.com/horizon-rust/horizon/releases"><b>Release notes</b></a> ·
  <a href="ROADMAP.md"><b>Roadmap</b></a> ·
  <a href="#project-status"><b>Project status</b></a> ·
  <a href="#contributing"><b>Contributing</b></a>
@@ -29,9 +29,9 @@ Horizon is Minecraft: Java Edition 26.3 rewritten in Rust: a native game that re

 ## Download

-Horizon is installed through **the Horizon launcher**. Get it from [playhorizon.dev](https://playhorizon.dev) (the Download button picks your system) or from [the launcher releases](https://github.com/ludovic111/horizon/releases?q=launcher-v&expanded=true), for Linux x86-64, macOS on Apple Silicon or Windows x64. The launcher installs and updates the game, prepares its files from your own copy of Minecraft, and updates itself.
+Horizon is installed through **the Horizon launcher**. Get it from [playhorizon.dev](https://playhorizon.dev) (the Download button picks your system) or from [the launcher releases](https://github.com/horizon-rust/horizon/releases?q=launcher-v&expanded=true), for Linux x86-64, macOS on Apple Silicon or Windows x64. The launcher installs and updates the game, prepares its files from your own copy of Minecraft, and updates itself.

-**You need** Minecraft: Java Edition 26.3, played once (the official launcher, Prism, MultiMC and other launchers all work); a Java 25 runtime, for the one-time preparation; and a GPU with Vulkan on Linux and Windows, or any Apple Silicon Mac. Step by step, with macOS's first-open prompt and the first launch: [Install and first launch](https://playhorizon.dev/docs/install).
+**You need** a Microsoft account that owns Minecraft: Java Edition (the launcher signs in with it, as other launchers do; see [Microsoft account](docs/microsoft-account.md)); Minecraft: Java Edition 26.3, played once (the official launcher, Prism, MultiMC and other launchers all work); a Java 25 runtime, for the one-time preparation; and a GPU with Vulkan on Linux and Windows, or any Apple Silicon Mac. Step by step, with macOS's first-open prompt and the first launch: [Install and first launch](https://playhorizon.dev/docs/install).

 <table>
  <tr>
@@ -47,7 +47,7 @@ The [documentation](https://playhorizon.dev/docs/) covers each of these.
 - **The game:** singleplayer with vanilla's world generation, mobs, villagers, raids, redstone, every command, the HUD and the recipe book, on saves in vanilla's format. Worlds from 1.8 to 26.2 are upgraded as vanilla does. [Status table](#project-status).
 - **Horizon's own extras:** new menus (vanilla's are one setting away), graphics presets, distant terrain up to 1024 chunks, controller support, optional zoom, minimap and more, all off by default where they would change the vanilla look. See [Settings](https://playhorizon.dev/docs/settings).
 - **Resource packs and data packs:** resource packs work, and data packs load functions, predicates and item modifiers.
- **Playing with others:** invite friends from the pause menu's Friends button with a code, Open to LAN, and joining offline-mode servers. Horizon cannot sign in to a Microsoft account yet, so it cannot join servers that check accounts. See [Multiplayer](https://playhorizon.dev/docs/multiplayer).
+- **Playing with others:** invite friends from the pause menu's Friends button with a code, Open to LAN, and joining servers, online-mode ones with the Microsoft account the launcher signs in with. See [Multiplayer](https://playhorizon.dev/docs/multiplayer).
 - **Mods:** Horizon has its own mod system (Rust compiled to WebAssembly). Java mod jars do not run. See [Mods and data packs](https://playhorizon.dev/docs/mods).

 Screenshots, captured in the Rust client itself with vanilla assets and no mods or shaders:
@@ -99,7 +99,7 @@ Horizon contains no game files and never downloads them. It builds its resources
 2. **Server jar:** the 26.3 server jar, from the `downloads.server.url` in your launcher's `versions/26.3/26.3.json` (or [minecraft.net/download/server](https://www.minecraft.net/en-us/download/server) while 26.3 is the current release). Pass it with `--server-jar` or set `HORIZON_SERVER_JAR`. It is only needed the first time.

 ```sh
-git clone https://github.com/ludovic111/horizon.git
+git clone https://github.com/horizon-rust/horizon.git
 cd horizon
 cargo run --release -p horizon-prepare -- --prepare --server-jar ~/Downloads/server.jar   # needs JDK 25
 cargo run --release -p horizon-prepare -- sounds   # optional: sounds from your launcher install
@@ -158,7 +158,7 @@ them too (Rust uses Java's own float maths on each platform).

 ### Known issues

-Horizon can't sign in to a Microsoft account yet, so it can't join online-mode servers (it joins offline-mode ones); skins served over https show the default skin unless already cached; pack icons show the unknown-pack texture in game; the creative hotbar keys (C/X) aren't wired to the hotbar loader; item tooltips lack attribute lines.
+Skins served over https show the default skin unless already cached; pack icons show the unknown-pack texture in game; the creative hotbar keys (C/X) aren't wired to the hotbar loader; item tooltips lack attribute lines.

 ## Licence

@@ -32,7 +32,7 @@ Making Horizon faster than vanilla on every computer, with smooth camera movemen

 <details><summary>Technical</summary>

-Frame pacing at render distance 32 ([#678](https://github.com/ludovic111/horizon/issues/678)): long frames come from work competing with the render thread. In review: world generation workers build free structure starts instead of queueing them ([#1760](https://github.com/ludovic111/horizon/issues/1760)), the worker pool leaves one core as vanilla does ([#1778](https://github.com/ludovic111/horizon/issues/1778)), and the terrain vertex arena is read as storage where flat draws run ([#1742](https://github.com/ludovic111/horizon/issues/1742)). Still open: far terrain at 48 to 64 chunks ([#718](https://github.com/ludovic111/horizon/issues/718)) and CPU-bound fields of block entities ([#717](https://github.com/ludovic111/horizon/issues/717)). Every change shows before and after numbers from `tools/perf_bench.py` against vanilla 26.3 ([docs/benchmark.md](docs/benchmark.md)).
+Frame pacing at render distance 32 ([#678](https://github.com/horizon-rust/horizon/issues/678)): long frames come from work competing with the render thread. In review: world generation workers build free structure starts instead of queueing them ([#1760](https://github.com/horizon-rust/horizon/issues/1760)), the worker pool leaves one core as vanilla does ([#1778](https://github.com/horizon-rust/horizon/issues/1778)), and the terrain vertex arena is read as storage where flat draws run ([#1742](https://github.com/horizon-rust/horizon/issues/1742)). Still open: far terrain at 48 to 64 chunks ([#718](https://github.com/horizon-rust/horizon/issues/718)) and CPU-bound fields of block entities ([#717](https://github.com/horizon-rust/horizon/issues/717)). Every change shows before and after numbers from `tools/perf_bench.py` against vanilla 26.3 ([docs/benchmark.md](docs/benchmark.md)).

 </details>

@@ -42,7 +42,7 @@ Speeding up the code that reads and writes the blocks of the world, which almost

 <details><summary>Technical</summary>

-`PalettedContainer` and `PackedStorage` find an entry's word by multiply and shift instead of an integer division ([#1790](https://github.com/ludovic111/horizon/issues/1790), [#1794](https://github.com/ludovic111/horizon/issues/1794)); meshing looks up baked models by index, not by name ([#1747](https://github.com/ludovic111/horizon/issues/1747)). Each change keeps the paletted storage harnesses identical and shows its microbenchmark ([docs/performance/paletted-container-access-results.md](docs/performance/paletted-container-access-results.md)).
+`PalettedContainer` and `PackedStorage` find an entry's word by multiply and shift instead of an integer division ([#1790](https://github.com/horizon-rust/horizon/issues/1790), [#1794](https://github.com/horizon-rust/horizon/issues/1794)); meshing looks up baked models by index, not by name ([#1747](https://github.com/horizon-rust/horizon/issues/1747)). Each change keeps the paletted storage harnesses identical and shows its microbenchmark ([docs/performance/paletted-container-access-results.md](docs/performance/paletted-container-access-results.md)).

 </details>

@@ -54,7 +54,7 @@ Making the world-generation mods of popular modpacks (new structures, YUNG's dun

 <details><summary>Technical</summary>

-`horizon-port-pack` carries a pack's data-driven content over; structure mods that need code get a native port: YUNG's worldgen as written ([#1746](https://github.com/ludovic111/horizon/issues/1746)), Lithostitched's limited and guaranteed elements with pool and processor modifiers ([#1777](https://github.com/ludovic111/horizon/issues/1777)), its processors as the game's own types ([#1765](https://github.com/ludovic111/horizon/issues/1765)). Proved by the structure blocks and layout harnesses ([#1753](https://github.com/ludovic111/horizon/issues/1753), [#1757](https://github.com/ludovic111/horizon/issues/1757)). Mods whose Java code does more than world generation don't run ([docs/modpacks.md](docs/modpacks.md)).
+`horizon-port-pack` carries a pack's data-driven content over; structure mods that need code get a native port: YUNG's worldgen as written ([#1746](https://github.com/horizon-rust/horizon/issues/1746)), Lithostitched's limited and guaranteed elements with pool and processor modifiers ([#1777](https://github.com/horizon-rust/horizon/issues/1777)), its processors as the game's own types ([#1765](https://github.com/horizon-rust/horizon/issues/1765)). Proved by the structure blocks and layout harnesses ([#1753](https://github.com/horizon-rust/horizon/issues/1753), [#1757](https://github.com/horizon-rust/horizon/issues/1757)). Mods whose Java code does more than world generation don't run ([docs/modpacks.md](docs/modpacks.md)).

 </details>

@@ -66,7 +66,7 @@ When you play on a server, other players, mobs, items and menus look and behave

 <details><summary>Technical</summary>

-Client-of-a-server fixes in `game/remote*.rs` and `horizon-protocol`: mobs' aggressive and item-use flags ([#1802](https://github.com/ludovic111/horizon/issues/1802), [#1798](https://github.com/ludovic111/horizon/issues/1798)), ghost items after a remote menu ([#1795](https://github.com/ludovic111/horizon/issues/1795)), skins ([#1652](https://github.com/ludovic111/horizon/issues/1652)), cookies and transfer packets for proxy networks ([#1650](https://github.com/ludovic111/horizon/issues/1650)), firework boosts ([#1671](https://github.com/ludovic111/horizon/issues/1671)), living-entity attributes and simulation distance ([#1731](https://github.com/ludovic111/horizon/issues/1731)), styled item names ([#1702](https://github.com/ludovic111/horizon/issues/1702)), primed TNT between updates ([#1710](https://github.com/ludovic111/horizon/issues/1710)).
+Client-of-a-server fixes in `game/remote*.rs` and `horizon-protocol`: mobs' aggressive and item-use flags ([#1802](https://github.com/horizon-rust/horizon/issues/1802), [#1798](https://github.com/horizon-rust/horizon/issues/1798)), ghost items after a remote menu ([#1795](https://github.com/horizon-rust/horizon/issues/1795)), skins ([#1652](https://github.com/horizon-rust/horizon/issues/1652)), cookies and transfer packets for proxy networks ([#1650](https://github.com/horizon-rust/horizon/issues/1650)), firework boosts ([#1671](https://github.com/horizon-rust/horizon/issues/1671)), living-entity attributes and simulation distance ([#1731](https://github.com/horizon-rust/horizon/issues/1731)), styled item names ([#1702](https://github.com/horizon-rust/horizon/issues/1702)), primed TNT between updates ([#1710](https://github.com/horizon-rust/horizon/issues/1710)).

 </details>

@@ -76,7 +76,7 @@ Servers that show dialogs, such as the register and login screens of AuthMe, wil

 <details><summary>Technical</summary>

-26.3's dialog packets and model ([#1720](https://github.com/ludovic111/horizon/issues/1720)), the dialog screen with its buttons and actions ([#1734](https://github.com/ludovic111/horizon/issues/1734)), then text and boolean inputs ([#1735](https://github.com/ludovic111/horizon/issues/1735)).
+26.3's dialog packets and model ([#1720](https://github.com/horizon-rust/horizon/issues/1720)), the dialog screen with its buttons and actions ([#1734](https://github.com/horizon-rust/horizon/issues/1734)), then text and boolean inputs ([#1735](https://github.com/horizon-rust/horizon/issues/1735)).

 </details>

@@ -86,7 +86,7 @@ A /pregen command that builds an area of the world ahead of time, so players don

 <details><summary>Technical</summary>

-Generates, lights and saves an area before anyone walks there ([#1805](https://github.com/ludovic111/horizon/issues/1805), a contributor's pull request, in review). Useful on servers, and it moves the generation cost away from the first visit; the generation speed-ups are under 'Steady frames at long render distances'.
+Generates, lights and saves an area before anyone walks there ([#1805](https://github.com/horizon-rust/horizon/issues/1805), a contributor's pull request, in review). Useful on servers, and it moves the generation cost away from the first visit; the generation speed-ups are under 'Steady frames at long render distances'.

 </details>

@@ -98,7 +98,7 @@ One place for mods, modpacks and resource packs made for Horizon: browse them on

 <details><summary>Technical</summary>

-Merged: the registry index (schema 1, `.hpack`, checks before install, [#1634](https://github.com/ludovic111/horizon/issues/1634)), `cargo horizon-mod check` ([#1642](https://github.com/ludovic111/horizon/issues/1642)) and the submission service (`crates/horizon-mod-registry`, [#1659](https://github.com/ludovic111/horizon/issues/1659)). In review: the website's /mods ([#1596](https://github.com/ludovic111/horizon/issues/1596)) and /mods/submit ([#1635](https://github.com/ludovic111/horizon/issues/1635)), and in the launcher the registry as a source ([#1636](https://github.com/ludovic111/horizon/issues/1636)), install, enable and takedowns ([#1637](https://github.com/ludovic111/horizon/issues/1637)), the Mods page ([#1638](https://github.com/ludovic111/horizon/issues/1638)) and modpacks as their own profiles ([#1640](https://github.com/ludovic111/horizon/issues/1640)).
+Merged: the registry index (schema 1, `.hpack`, checks before install, [#1634](https://github.com/horizon-rust/horizon/issues/1634)), `cargo horizon-mod check` ([#1642](https://github.com/horizon-rust/horizon/issues/1642)) and the submission service (`crates/horizon-mod-registry`, [#1659](https://github.com/horizon-rust/horizon/issues/1659)). In review: the website's /mods ([#1596](https://github.com/horizon-rust/horizon/issues/1596)) and /mods/submit ([#1635](https://github.com/horizon-rust/horizon/issues/1635)), and in the launcher the registry as a source ([#1636](https://github.com/horizon-rust/horizon/issues/1636)), install, enable and takedowns ([#1637](https://github.com/horizon-rust/horizon/issues/1637)), the Mods page ([#1638](https://github.com/horizon-rust/horizon/issues/1638)) and modpacks as their own profiles ([#1640](https://github.com/horizon-rust/horizon/issues/1640)).

 More: [docs/mods.md](docs/mods.md)

@@ -110,7 +110,7 @@ Mods that run on the server side of a world, so a dedicated server or a LAN worl

 <details><summary>Technical</summary>

-API 0.3, experimental first ([#1833](https://github.com/ludovic111/horizon/issues/1833), in review): the same sandboxed component runs on the server thread and the dedicated server, with world events (block broken or placed, entity spawned or killed, player joined or left), game rules and server commands with typed arguments. The world, item and entity interfaces come after (see 'Mods that read and change the world'). [docs/api/mods.md](docs/api/mods.md), [docs/mods.md](docs/mods.md).
+API 0.3, experimental first ([#1833](https://github.com/horizon-rust/horizon/issues/1833), in review): the same sandboxed component runs on the server thread and the dedicated server, with world events (block broken or placed, entity spawned or killed, player joined or left), game rules and server commands with typed arguments. The world, item and entity interfaces come after (see 'Mods that read and change the world'). [docs/api/mods.md](docs/api/mods.md), [docs/mods.md](docs/mods.md).

 </details>

@@ -120,7 +120,7 @@ Mods will be able to open their own screens and settings pages and react to keys

 <details><summary>Technical</summary>

-Capability `ui` is in review ([#1864](https://github.com/ludovic111/horizon/issues/1864)): mod-owned screens and a settings page under Options > Mods, built from vanilla's widgets. Still to design: `input` (an item's use, key binds, the crosshair target), `render` (a budgeted draw list on the native shader API) and `world` (changing blocks). Orbital Laser is the acceptance test: it needs all four today through its author's fork (see 'Orbital Laser on the normal game').
+Capability `ui` is in review ([#1864](https://github.com/horizon-rust/horizon/issues/1864)): mod-owned screens and a settings page under Options > Mods, built from vanilla's widgets. Still to design: `input` (an item's use, key binds, the crosshair target), `render` (a budgeted draw list on the native shader API) and `world` (changing blocks). Orbital Laser is the acceptance test: it needs all four today through its author's fork (see 'Orbital Laser on the normal game').

 More: [docs/mods.md](docs/mods.md)

@@ -132,7 +132,7 @@ Better tools for mod makers: a test runner that needs no game window, templates

 <details><summary>Technical</summary>

-`cargo horizon-mod test` runs a mod's test scripts against a fake game snapshot ([#1816](https://github.com/ludovic111/horizon/issues/1816)) and, for server mods, scripted server events ([#1837](https://github.com/ludovic111/horizon/issues/1837)); the content template and the guides are merged ([#1859](https://github.com/ludovic111/horizon/issues/1859), [#1810](https://github.com/ludovic111/horizon/issues/1810), [docs/api/stability.md](docs/api/stability.md)). Left: templates for hud, server and machine mods, typed wrappers in the SDK, a frozen 0.1 compatibility mod that every runtime must load, a CI check that fails when a stable reference entry is removed without a new major version, and the SDK on crates.io once the API is stable.
+`cargo horizon-mod test` runs a mod's test scripts against a fake game snapshot ([#1816](https://github.com/horizon-rust/horizon/issues/1816)) and, for server mods, scripted server events ([#1837](https://github.com/horizon-rust/horizon/issues/1837)); the content template and the guides are merged ([#1859](https://github.com/horizon-rust/horizon/issues/1859), [#1810](https://github.com/horizon-rust/horizon/issues/1810), [docs/api/stability.md](docs/api/stability.md)). Left: templates for hud, server and machine mods, typed wrappers in the SDK, a frozen 0.1 compatibility mod that every runtime must load, a CI check that fails when a stable reference entry is removed without a new major version, and the SDK on crates.io once the API is stable.

 More: [https://playhorizon.dev/docs/test-a-mod](https://playhorizon.dev/docs/test-a-mod)

@@ -146,7 +146,7 @@ Single player now runs a small server in the background, as vanilla does. We are

 <details><summary>Technical</summary>

-Since [#1514](https://github.com/ludovic111/horizon/issues/1514) single player runs on the server thread (`game/integrated.rs`) and the window joins it as a client; `--in-frame` keeps the old path. The open `[server-thread]` issues list the gaps. In review: a tool that changes a block ends the click ([#1797](https://github.com/ludovic111/horizon/issues/1797)), potions keep their potion over the connection ([#1796](https://github.com/ludovic111/horizon/issues/1796)), mobs' aggression and arm swings ([#1802](https://github.com/ludovic111/horizon/issues/1802)). [docs/server-levels.md](docs/server-levels.md).
+Since [#1514](https://github.com/horizon-rust/horizon/issues/1514) single player runs on the server thread (`game/integrated.rs`) and the window joins it as a client; `--in-frame` keeps the old path. The open `[server-thread]` issues list the gaps. In review: a tool that changes a block ends the click ([#1797](https://github.com/horizon-rust/horizon/issues/1797)), potions keep their potion over the connection ([#1796](https://github.com/horizon-rust/horizon/issues/1796)), mobs' aggression and arm swings ([#1802](https://github.com/horizon-rust/horizon/issues/1802)). [docs/server-levels.md](docs/server-levels.md).

 </details>

@@ -156,7 +156,7 @@ Item names, container titles and server messages follow the language you pick, a

 <details><summary>Technical</summary>

-Translatable components resolved through the selected language for items, containers and server text ([#1806](https://github.com/ludovic111/horizon/issues/1806)), on top of the bundled languages the prepared resources carry ([#1594](https://github.com/ludovic111/horizon/issues/1594)). Left: the client's own screens ([#1672](https://github.com/ludovic111/horizon/issues/1672)) and the main menu with zh_cn ([#1774](https://github.com/ludovic111/horizon/issues/1774)).
+Translatable components resolved through the selected language for items, containers and server text ([#1806](https://github.com/horizon-rust/horizon/issues/1806)), on top of the bundled languages the prepared resources carry ([#1594](https://github.com/horizon-rust/horizon/issues/1594)). Left: the client's own screens ([#1672](https://github.com/horizon-rust/horizon/issues/1672)) and the main menu with zh_cn ([#1774](https://github.com/horizon-rust/horizon/issues/1774)).

 </details>

@@ -166,9 +166,9 @@ After you throw an ender pearl, its slot should show the cooldown sweeping away,

 <details><summary>Technical</summary>

-Vanilla draws `ItemCooldowns`' percent as a white overlay over the slot (`GuiGraphicsExtractor.itemDecorations` and `itemCooldown`) in the hotbar and in inventories. Issue [#1763](https://github.com/ludovic111/horizon/issues/1763).
+Vanilla draws `ItemCooldowns`' percent as a white overlay over the slot (`GuiGraphicsExtractor.itemDecorations` and `itemCooldown`) in the hotbar and in inventories. Issue [#1763](https://github.com/horizon-rust/horizon/issues/1763).

-More: [#1933](https://github.com/ludovic111/horizon/issues/1933)
+More: [#1933](https://github.com/horizon-rust/horizon/issues/1933)

 </details>

@@ -178,9 +178,9 @@ The Hidden and Commands Only chat settings should hide chat, and team prefixes s

 <details><summary>Technical</summary>

-Vanilla checks `ChatVisiblity` before it delivers chat and system messages ([#1376](https://github.com/ludovic111/horizon/issues/1376)), and chat uses the team-formatted display name ([#1378](https://github.com/ludovic111/horizon/issues/1378)). Both issues have exact steps to reproduce.
+Vanilla checks `ChatVisiblity` before it delivers chat and system messages ([#1376](https://github.com/horizon-rust/horizon/issues/1376)), and chat uses the team-formatted display name ([#1378](https://github.com/horizon-rust/horizon/issues/1378)). Both issues have exact steps to reproduce.

-More: [#1932](https://github.com/ludovic111/horizon/issues/1932) · [#1841](https://github.com/ludovic111/horizon/issues/1841)
+More: [#1932](https://github.com/horizon-rust/horizon/issues/1932) · [#1841](https://github.com/horizon-rust/horizon/issues/1841)

 </details>

@@ -190,9 +190,9 @@ The mouse pointer should turn into a pointing hand over menu buttons, as in vani

 <details><summary>Technical</summary>

-26.3's `AbstractWidget` asks for a cursor from `CursorTypes` when it is hovered; winit's `CursorIcon::Pointer` gives the same shape. Issue [#1347](https://github.com/ludovic111/horizon/issues/1347).
+26.3's `AbstractWidget` asks for a cursor from `CursorTypes` when it is hovered; winit's `CursorIcon::Pointer` gives the same shape. Issue [#1347](https://github.com/horizon-rust/horizon/issues/1347).

-More: [#1897](https://github.com/ludovic111/horizon/issues/1897)
+More: [#1897](https://github.com/horizon-rust/horizon/issues/1897)

 </details>

@@ -202,9 +202,9 @@ Ctrl+Backspace should delete a whole word in the creative search, and every list

 <details><summary>Technical</summary>

-`EditBox` deletes by word with Ctrl ([#1764](https://github.com/ludovic111/horizon/issues/1764)); the Game Rules and Statistics lists' scroll bars can't be dragged ([#1782](https://github.com/ludovic111/horizon/issues/1782), after [#978](https://github.com/ludovic111/horizon/issues/978)).
+`EditBox` deletes by word with Ctrl ([#1764](https://github.com/horizon-rust/horizon/issues/1764)); the Game Rules and Statistics lists' scroll bars can't be dragged ([#1782](https://github.com/horizon-rust/horizon/issues/1782), after [#978](https://github.com/horizon-rust/horizon/issues/978)).

-More: [#1884](https://github.com/ludovic111/horizon/issues/1884) · [#1931](https://github.com/ludovic111/horizon/issues/1931)
+More: [#1884](https://github.com/horizon-rust/horizon/issues/1884) · [#1931](https://github.com/horizon-rust/horizon/issues/1931)

 </details>

@@ -214,9 +214,9 @@ Chickens should flap their wings while they fall, not stand still in the air.

 <details><summary>Technical</summary>

-Vanilla's `Chicken.aiStep` updates `flap` and `flapSpeed` when the chicken isn't on the ground, and the model's wings follow them. Issue [#1706](https://github.com/ludovic111/horizon/issues/1706).
+Vanilla's `Chicken.aiStep` updates `flap` and `flapSpeed` when the chicken isn't on the ground, and the model's wings follow them. Issue [#1706](https://github.com/horizon-rust/horizon/issues/1706).

-More: [#1892](https://github.com/ludovic111/horizon/issues/1892)
+More: [#1892](https://github.com/horizon-rust/horizon/issues/1892)

 </details>

@@ -228,9 +228,9 @@ Shader packs were removed and are being rebuilt from scratch. They come back, of

 <details><summary>Technical</summary>

-A clean-room rewrite in `horizon-shaderpack`, from the packs' public format documentation only: reading packs, the preprocessor and `.properties` files are merged ([#1584](https://github.com/ludovic111/horizon/issues/1584), [#1585](https://github.com/ludovic111/horizon/issues/1585), [#1586](https://github.com/ludovic111/horizon/issues/1586)); translating programs to WGSL through naga, buffers, uniforms and the terrain, entity, sky, weather and hand stages are in review ([#1698](https://github.com/ludovic111/horizon/issues/1698) to [#1801](https://github.com/ludovic111/horizon/issues/1801)).
+A clean-room rewrite in `horizon-shaderpack`, from the packs' public format documentation only: reading packs, the preprocessor and `.properties` files are merged ([#1584](https://github.com/horizon-rust/horizon/issues/1584), [#1585](https://github.com/horizon-rust/horizon/issues/1585), [#1586](https://github.com/horizon-rust/horizon/issues/1586)); translating programs to WGSL through naga, buffers, uniforms and the terrain, entity, sky, weather and hand stages are in review ([#1698](https://github.com/horizon-rust/horizon/issues/1698) to [#1801](https://github.com/horizon-rust/horizon/issues/1801)).

-More: [#1561](https://github.com/ludovic111/horizon/issues/1561) · [#1771](https://github.com/ludovic111/horizon/issues/1771) · [#1786](https://github.com/ludovic111/horizon/issues/1786)
+More: [#1561](https://github.com/horizon-rust/horizon/issues/1561) · [#1771](https://github.com/horizon-rust/horizon/issues/1771) · [#1786](https://github.com/horizon-rust/horizon/issues/1786)

 </details>

@@ -240,7 +240,7 @@ Horizon's own way to make shader packs, with tools to write and test them. Every

 <details><summary>Technical</summary>

-`horizon-shader-api` (API 0.1, experimental): WGSL stages with typed inputs inside the renderer's passes, options as WGSL override constants, and the `horizon-shader new|check|pack` tool with templates and the example pack Golden Hour. Merged: the check every pack passes ([#1820](https://github.com/ludovic111/horizon/issues/1820)) and the tool, templates and guide ([#1822](https://github.com/ludovic111/horizon/issues/1822)). In review: the post stage running in the game with hot reload ([#1861](https://github.com/ludovic111/horizon/issues/1861)), the sky stage ([#1863](https://github.com/ludovic111/horizon/issues/1863)) and registry checks that use the game's own check ([#1855](https://github.com/ludovic111/horizon/issues/1855)). Left: the material, lighting and shadow stages, a last-good fallback on reload, a GPU-time overlay per stage and budgets ([docs/shaders.md](docs/shaders.md), [docs/api/shaders.md](docs/api/shaders.md)). The Iris/OptiFine loader is a separate item, 'Shader packs, written again from scratch'.
+`horizon-shader-api` (API 0.1, experimental): WGSL stages with typed inputs inside the renderer's passes, options as WGSL override constants, and the `horizon-shader new|check|pack` tool with templates and the example pack Golden Hour. Merged: the check every pack passes ([#1820](https://github.com/horizon-rust/horizon/issues/1820)) and the tool, templates and guide ([#1822](https://github.com/horizon-rust/horizon/issues/1822)). In review: the post stage running in the game with hot reload ([#1861](https://github.com/horizon-rust/horizon/issues/1861)), the sky stage ([#1863](https://github.com/horizon-rust/horizon/issues/1863)) and registry checks that use the game's own check ([#1855](https://github.com/horizon-rust/horizon/issues/1855)). Left: the material, lighting and shadow stages, a last-good fallback on reload, a GPU-time overlay per stage and budgets ([docs/shaders.md](docs/shaders.md), [docs/api/shaders.md](docs/api/shaders.md)). The Iris/OptiFine loader is a separate item, 'Shader packs, written again from scratch'.

 </details>

@@ -252,7 +252,7 @@ Your Discord profile can show that you are playing Horizon, with a switch to tur

 <details><summary>Technical</summary>

-A Discord IPC client on its own thread ([#1787](https://github.com/ludovic111/horizon/issues/1787)) and the presence with its setting ([#1788](https://github.com/ludovic111/horizon/issues/1788)). Merged: it ships with the next release.
+A Discord IPC client on its own thread ([#1787](https://github.com/horizon-rust/horizon/issues/1787)) and the presence with its setting ([#1788](https://github.com/horizon-rust/horizon/issues/1788)). Merged: it ships with the next release.

 </details>

@@ -264,7 +264,7 @@ Cleaning up Horizon's code: removing what nothing uses and making it quicker to

 <details><summary>Technical</summary>

-A review of the whole tree: dead code and stubs removed ([#1432](https://github.com/ludovic111/horizon/issues/1432), [#1658](https://github.com/ludovic111/horizon/issues/1658)), one probe binary per crate ([#1453](https://github.com/ludovic111/horizon/issues/1453), [#1454](https://github.com/ludovic111/horizon/issues/1454)), shared harness helpers ([#1448](https://github.com/ludovic111/horizon/issues/1448)), clippy clean on the whole tree ([#1707](https://github.com/ludovic111/horizon/issues/1707)). [docs/architecture.md](docs/architecture.md) maps each feature to its files and harnesses.
+A review of the whole tree: dead code and stubs removed ([#1432](https://github.com/horizon-rust/horizon/issues/1432), [#1658](https://github.com/horizon-rust/horizon/issues/1658)), one probe binary per crate ([#1453](https://github.com/horizon-rust/horizon/issues/1453), [#1454](https://github.com/horizon-rust/horizon/issues/1454)), shared harness helpers ([#1448](https://github.com/horizon-rust/horizon/issues/1448)), clippy clean on the whole tree ([#1707](https://github.com/horizon-rust/horizon/issues/1707)). [docs/architecture.md](docs/architecture.md) maps each feature to its files and harnesses.

 </details>

@@ -278,7 +278,7 @@ New public numbers comparing Horizon with vanilla on many kinds of computers, me

 <details><summary>Technical</summary>

-Redo the comparison after the current performance work ([#1073](https://github.com/ludovic111/horizon/issues/1073)); reliability, coverage and presentation ([#1346](https://github.com/ludovic111/horizon/issues/1346)); a scene must count as loaded only once its first chunk arrives ([#1749](https://github.com/ludovic111/horizon/issues/1749)). Next: a performance history across releases (an automatic comparison of each release with the last, on a timeline), more report fields (server TPS and MSPT, power, battery drain, temperature, throttling) and more hardware (a MacBook on battery, low-end laptops, community reports). Players' reports come in through `--benchmark` and `horizon-launcher data benchmark` ([docs/benchmark.md](docs/benchmark.md)).
+Redo the comparison after the current performance work ([#1073](https://github.com/horizon-rust/horizon/issues/1073)); reliability, coverage and presentation ([#1346](https://github.com/horizon-rust/horizon/issues/1346)); a scene must count as loaded only once its first chunk arrives ([#1749](https://github.com/horizon-rust/horizon/issues/1749)). Next: a performance history across releases (an automatic comparison of each release with the last, on a timeline), more report fields (server TPS and MSPT, power, battery drain, temperature, throttling) and more hardware (a MacBook on battery, low-end laptops, community reports). Players' reports come in through `--benchmark` and `horizon-launcher data benchmark` ([docs/benchmark.md](docs/benchmark.md)).

 </details>

@@ -288,7 +288,7 @@ Creating a world and joining it should be quick even on a four-thread laptop, wh

 <details><summary>Technical</summary>

-Cut the per-column generation cost (noise sampling, surface rules, aquifers) and the lock convoy on structure starts, and leave one core free for the rest of the game as vanilla does ([#1760](https://github.com/ludovic111/horizon/issues/1760) and [#1778](https://github.com/ludovic111/horizon/issues/1778), in review, are listed under 'Steady frames at long render distances'). Still to profile on small CPUs: the first seconds of a fresh world deliver no chunk, and fluids remesh for about a minute after loading. Measured with `tools/perf_bench.py` ([docs/benchmark.md](docs/benchmark.md), [docs/profiling.md](docs/profiling.md)).
+Cut the per-column generation cost (noise sampling, surface rules, aquifers) and the lock convoy on structure starts, and leave one core free for the rest of the game as vanilla does ([#1760](https://github.com/horizon-rust/horizon/issues/1760) and [#1778](https://github.com/horizon-rust/horizon/issues/1778), in review, are listed under 'Steady frames at long render distances'). Still to profile on small CPUs: the first seconds of a fresh world deliver no chunk, and fluids remesh for about a minute after loading. Measured with `tools/perf_bench.py` ([docs/benchmark.md](docs/benchmark.md), [docs/profiling.md](docs/profiling.md)).

 </details>

@@ -320,7 +320,7 @@ Draw the game at a lower resolution and sharpen it to your screen's size, in the

 <details><summary>Technical</summary>

-A render-scale setting below the window size with an upscaler of our own that runs on every wgpu backend. Proof: frame time against native resolution on integrated GPUs, and screenshots for image quality. Issue [#1403](https://github.com/ludovic111/horizon/issues/1403).
+A render-scale setting below the window size with an upscaler of our own that runs on every wgpu backend. Proof: frame time against native resolution on integrated GPUs, and screenshots for image quality. Issue [#1403](https://github.com/horizon-rust/horizon/issues/1403).

 </details>

@@ -330,7 +330,7 @@ Several smaller speed-ups, each measured: idle block entities that sleep, cheape

 <details><summary>Technical</summary>

-Block entities and hoppers that skip work when idle (the hopper item scan is already skipped when no item is near); a particle frustum test first (also a parity gap), then particle quads built on the GPU; jigsaw shortcuts that skip blocked connectors and pool elements known not to fit, with layouts unchanged (trial chambers and ancient cities first); batched raw mouse input on Windows for 8000 Hz mice; a better atlas packer for huge resource packs (a 64x pack builds a 704 MiB atlas for 452 MiB of textures); sign-heavy scenes ([#1461](https://github.com/ludovic111/horizon/issues/1461)). Profile first, keep what pays, show before and after numbers.
+Block entities and hoppers that skip work when idle (the hopper item scan is already skipped when no item is near); a particle frustum test first (also a parity gap), then particle quads built on the GPU; jigsaw shortcuts that skip blocked connectors and pool elements known not to fit, with layouts unchanged (trial chambers and ancient cities first); batched raw mouse input on Windows for 8000 Hz mice; a better atlas packer for huge resource packs (a 64x pack builds a 704 MiB atlas for 452 MiB of textures); sign-heavy scenes ([#1461](https://github.com/horizon-rust/horizon/issues/1461)). Profile first, keep what pays, show before and after numbers.

 More: [docs/profiling.md](docs/profiling.md)

@@ -364,7 +364,7 @@ Making mods that add machines, magic and mobs work in Horizon, in steps, startin

 <details><summary>Technical</summary>

-333 of the 496 mods in a big pack (ATM10) contain code. Issue [#1854](https://github.com/ludovic111/horizon/issues/1854) ranks the API gaps (ticking block entities, networking, rendering, menus, inventories) that unlock them in tiers, with machines first as the recommended path and a furnace ported tick for tick as proof. The first API step is a draft ([#1189](https://github.com/ludovic111/horizon/issues/1189), see 'Machines and blocks with inventories'). The path isn't started yet ([docs/modpacks.md](docs/modpacks.md)).
+333 of the 496 mods in a big pack (ATM10) contain code. Issue [#1854](https://github.com/horizon-rust/horizon/issues/1854) ranks the API gaps (ticking block entities, networking, rendering, menus, inventories) that unlock them in tiers, with machines first as the recommended path and a furnace ported tick for tick as proof. The first API step is a draft ([#1189](https://github.com/horizon-rust/horizon/issues/1189), see 'Machines and blocks with inventories'). The path isn't started yet ([docs/modpacks.md](docs/modpacks.md)).

 </details>

@@ -386,7 +386,7 @@ Set up Horizon, a server first, without Java on your computer: published tables

 <details><summary>Technical</summary>

-Today `horizon-prepare` runs Mojang's exporters with Java. Issue [#1750](https://github.com/ludovic111/horizon/issues/1750) proposes publishing the computed version tables once from CI and assembling the rest locally from the player's own jar and assets, provided the tables hold no Mojang content; a contributor offered a pull request, and it would help phones too. A server-only prepare from `server.jar` alone is the first step ([docs/server.md](docs/server.md)).
+Today `horizon-prepare` runs Mojang's exporters with Java. Issue [#1750](https://github.com/horizon-rust/horizon/issues/1750) proposes publishing the computed version tables once from CI and assembling the rest locally from the player's own jar and assets, provided the tables hold no Mojang content; a contributor offered a pull request, and it would help phones too. A server-only prepare from `server.jar` alone is the first step ([docs/server.md](docs/server.md)).

 </details>

@@ -406,7 +406,7 @@ Smoother hosting: a real Windows service, a backup before every update, backups

 <details><summary>Technical</summary>

-A Windows service wrapper instead of the logon scheduled task; `backups.before_update`; hot reload of config for view distance and the message of the day (needs engine support); backups that keep world and player state ([#1808](https://github.com/ludovic111/horizon/issues/1808), a contributor's draft, in review). [docs/hosting.md](docs/hosting.md), docs/server.md.
+A Windows service wrapper instead of the logon scheduled task; `backups.before_update`; hot reload of config for view distance and the message of the day (needs engine support); backups that keep world and player state ([#1808](https://github.com/horizon-rust/horizon/issues/1808), a contributor's draft, in review). [docs/hosting.md](docs/hosting.md), docs/server.md.

 </details>

@@ -464,7 +464,7 @@ Mods that add machines: blocks that tick, hold items and have their own menus. T

 <details><summary>Technical</summary>

-Block entities and menus: ticking machines with slots, server menu logic and the menu protocol to clients, energy, item and fluid transfer, data attachments, accessory slots and custom recipe types, with a typed client and server channel and typed config beside them. A draft ([#1189](https://github.com/ludovic111/horizon/issues/1189)) proves a furnace ported tick for tick and holds the ATM10 code-mods plan; the design is redone through the API policy before it merges ([docs/modpacks.md](docs/modpacks.md), docs/api/stability.md).
+Block entities and menus: ticking machines with slots, server menu logic and the menu protocol to clients, energy, item and fluid transfer, data attachments, accessory slots and custom recipe types, with a typed client and server channel and typed config beside them. A draft ([#1189](https://github.com/horizon-rust/horizon/issues/1189)) proves a furnace ported tick for tick and holds the ATM10 code-mods plan; the design is redone through the API policy before it merges ([docs/modpacks.md](docs/modpacks.md), docs/api/stability.md).

 </details>

@@ -486,7 +486,7 @@ Pistons and slime blocks will push players, mobs and items as in vanilla. Today

 <details><summary>Technical</summary>

-Port `PistonMovingBlockEntity.moveCollidedEntities` and `moveStuckEntities` (honey), the slime bounce and `Entity.limitPistonMovement` for `MoverType.PISTON`, in single player and for a server's players. Issues [#1496](https://github.com/ludovic111/horizon/issues/1496), [#1609](https://github.com/ludovic111/horizon/issues/1609), [#1608](https://github.com/ludovic111/horizon/issues/1608), [#1704](https://github.com/ludovic111/horizon/issues/1704), [#1758](https://github.com/ludovic111/horizon/issues/1758).
+Port `PistonMovingBlockEntity.moveCollidedEntities` and `moveStuckEntities` (honey), the slime bounce and `Entity.limitPistonMovement` for `MoverType.PISTON`, in single player and for a server's players. Issues [#1496](https://github.com/horizon-rust/horizon/issues/1496), [#1609](https://github.com/horizon-rust/horizon/issues/1609), [#1608](https://github.com/horizon-rust/horizon/issues/1608), [#1704](https://github.com/horizon-rust/horizon/issues/1704), [#1758](https://github.com/horizon-rust/horizon/issues/1758).

 </details>

@@ -506,7 +506,7 @@ Villages and fights behaving as in vanilla: iron golems defending villages, vill

 <details><summary>Technical</summary>

-Villages: iron golem village goals, villager memories across saves, villager age, job-site claiming on dedicated servers, flower offers ([#1639](https://github.com/ludovic111/horizon/issues/1639) is one report). Combat: the mobs' `attack_knockback` attribute, mace smash logic, the hit knockback source on the host, the fire burnout biome tag. Each is checked against vanilla by a harness ([docs/rust-parity.md](docs/rust-parity.md)).
+Villages: iron golem village goals, villager memories across saves, villager age, job-site claiming on dedicated servers, flower offers ([#1639](https://github.com/horizon-rust/horizon/issues/1639) is one report). Combat: the mobs' `attack_knockback` attribute, mace smash logic, the hit knockback source on the host, the fire burnout biome tag. Each is checked against vanilla by a harness ([docs/rust-parity.md](docs/rust-parity.md)).

 </details>

@@ -516,7 +516,7 @@ Pick the speakers or headphones Horizon plays through, in Music & Sounds.

 <details><summary>Technical</summary>

-An output device list in Music & Sounds, falling back to the system default. [#1035](https://github.com/ludovic111/horizon/issues/1035) started it: a player on an older Windows computer had no sound at all, and a device choice is how such cases are found and fixed.
+An output device list in Music & Sounds, falling back to the system default. [#1035](https://github.com/horizon-rust/horizon/issues/1035) started it: a player on an older Windows computer had no sound at all, and a device choice is how such cases are found and fixed.

 </details>

@@ -544,7 +544,7 @@ Coming soon: sign in with your Microsoft account to play on online-mode servers.

 Device-code sign-in in the launcher and online-mode login in the client ([docs/microsoft-account.md](docs/microsoft-account.md)). It is turned on by setting the app's client id once Minecraft API access is approved; until then the launcher shows "Coming soon".

-More: [#1270](https://github.com/ludovic111/horizon/issues/1270)
+More: [#1270](https://github.com/horizon-rust/horizon/issues/1270)

 </details>

@@ -566,7 +566,7 @@ Builds of the game and the launcher for Macs with an Intel processor.

 <details><summary>Technical</summary>

-x86_64 game and launcher builds, picked per processor ([#1171](https://github.com/ludovic111/horizon/issues/1171)). Before it ships it needs a run on a real Intel Mac: Rosetta on Apple Silicon only proves the CPU code. Requests: [#1161](https://github.com/ludovic111/horizon/issues/1161), [#1792](https://github.com/ludovic111/horizon/issues/1792).
+x86_64 game and launcher builds, picked per processor ([#1171](https://github.com/horizon-rust/horizon/issues/1171)). Before it ships it needs a run on a real Intel Mac: Rosetta on Apple Silicon only proves the CPU code. Requests: [#1161](https://github.com/horizon-rust/horizon/issues/1161), [#1792](https://github.com/horizon-rust/horizon/issues/1792).

 </details>

@@ -576,7 +576,7 @@ Fixes for Linux desktops that use Wayland and Hyprland: fullscreen, the clipboar

 <details><summary>Technical</summary>

-Open: the GUI Scale is clamped to 2 after a restart under Hyprland, while XWayland keeps it ([#1866](https://github.com/ludovic111/horizon/issues/1866)). Earlier reports covered fullscreen dropping on menu clicks, the clipboard and a white overlay ([#1007](https://github.com/ludovic111/horizon/issues/1007), closed). Checked on a real Wayland session.
+Open: the GUI Scale is clamped to 2 after a restart under Hyprland, while XWayland keeps it ([#1866](https://github.com/horizon-rust/horizon/issues/1866)). Earlier reports covered fullscreen dropping on menu clicks, the clipboard and a white overlay ([#1007](https://github.com/horizon-rust/horizon/issues/1007), closed). Checked on a real Wayland session.

 </details>

@@ -626,7 +626,7 @@ Safer releases: changes to the release machinery need the owner's review, and AI

 <details><summary>Technical</summary>

-`.github/CODEOWNERS` lists the workflows, the release and signing tools, the update-checking code and the installers ([#1015](https://github.com/ludovic111/horizon/issues/1015)); the branch protection that makes it count waits for the `horizon-agent` GitHub App, which reads and writes code, pull requests and issues but can't change settings, workflows, secrets or members, and whose tokens last an hour. It needs the owner to create the App and switch the protection on ([docs/security.md](docs/security.md)).
+`.github/CODEOWNERS` lists the workflows, the release and signing tools, the update-checking code and the installers ([#1015](https://github.com/horizon-rust/horizon/issues/1015)); the branch protection that makes it count waits for the `horizon-agent` GitHub App, which reads and writes code, pull requests and issues but can't change settings, workflows, secrets or members, and whose tokens last an hour. It needs the owner to create the App and switch the protection on ([docs/security.md](docs/security.md)).

 </details>

@@ -636,7 +636,7 @@ Every download Horizon makes is checked against the project's signature, includi

 <details><summary>Technical</summary>

-Releases carry signed checksums, and the launcher and `horizon-server update` refuse anything unsigned ([#1011](https://github.com/ludovic111/horizon/issues/1011), [#1014](https://github.com/ludovic111/horizon/issues/1014)). Left: the first install through `install.sh` and `install.ps1` still trusts only the checksum GitHub publishes, because verifying Ed25519 signatures needs OpenSSL 3, which macOS doesn't ship ([docs/security.md](docs/security.md)).
+Releases carry signed checksums, and the launcher and `horizon-server update` refuse anything unsigned ([#1011](https://github.com/horizon-rust/horizon/issues/1011), [#1014](https://github.com/horizon-rust/horizon/issues/1014)). Left: the first install through `install.sh` and `install.ps1` still trusts only the checksum GitHub publishes, because verifying Ed25519 signatures needs OpenSSL 3, which macOS doesn't ship ([docs/security.md](docs/security.md)).

 </details>

@@ -650,7 +650,7 @@ Far terrain drawn from the world you really built and explored, caves and builds

 <details><summary>Technical</summary>

-Keep a 3D mip store on disk built from real chunks, drawn by the GPU beside the seed preview for areas nobody has visited. Written from scratch and measured before it is kept. Builds on Far Detail and the far-terrain levels of detail already shipped; the open work on them is [#718](https://github.com/ludovic111/horizon/issues/718).
+Keep a 3D mip store on disk built from real chunks, drawn by the GPU beside the seed preview for areas nobody has visited. Written from scratch and measured before it is kept. Builds on Far Detail and the far-terrain levels of detail already shipped; the open work on them is [#718](https://github.com/horizon-rust/horizon/issues/718).

 </details>

@@ -692,7 +692,7 @@ Run Java mods that nobody has rewritten for Horizon yet, through a bridge or a c

 <details><summary>Technical</summary>

-Earlier research ([#527](https://github.com/ludovic111/horizon/issues/527), closed) found that Java mods can't simply run, because they call Minecraft's own classes. Options to look at again: a jar-to-WebAssembly backend, or a bridge for simple Fabric mods. Whatever is chosen has to run inside the same sandbox and capability checks as native mods.
+Earlier research ([#527](https://github.com/horizon-rust/horizon/issues/527), closed) found that Java mods can't simply run, because they call Minecraft's own classes. Options to look at again: a jar-to-WebAssembly backend, or a bridge for simple Fabric mods. Whatever is chosen has to run inside the same sandbox and capability checks as native mods.

 </details>

@@ -704,7 +704,7 @@ Sign in with other account providers, such as Ely.by or any Yggdrasil-compatible

 <details><summary>Technical</summary>

-Issue [#1270](https://github.com/ludovic111/horizon/issues/1270) asks for Ely.by and Yggdrasil-compatible servers with an account selector in the launcher. It builds on the Microsoft sign-in ([docs/microsoft-account.md](docs/microsoft-account.md)).
+Issue [#1270](https://github.com/horizon-rust/horizon/issues/1270) asks for Ely.by and Yggdrasil-compatible servers with an account selector in the launcher. It builds on the Microsoft sign-in ([docs/microsoft-account.md](docs/microsoft-account.md)).

 </details>

@@ -748,7 +748,7 @@ Contraptions and physics like the Create and Aeronautics mods, as a mod for Hori

 <details><summary>Technical</summary>

-Issue [#805](https://github.com/ludovic111/horizon/issues/805) (porting QOL mods) closed with this answer: it would come as a native Horizon mod on the mod API. It needs server mods, entities and rendering first.
+Issue [#805](https://github.com/horizon-rust/horizon/issues/805) (porting QOL mods) closed with this answer: it would come as a native Horizon mod on the mod API. It needs server mods, entities and rendering first.

 </details>

@@ -790,7 +790,7 @@ Vanilla's complete F3 screen: debug options, a profiler chart, ten-second captur

 <details><summary>Technical</summary>

-Today F3 shows position, chunk, light, biome and FPS ([docs/native-client.md](docs/native-client.md)). Vanilla also has F3+F6 debug options with profiles, F3+1 the profiler pie, F3+L a ten-second capture and F3+S the atlas dump ([#562](https://github.com/ludovic111/horizon/issues/562) asked for the F3 editor).
+Today F3 shows position, chunk, light, biome and FPS ([docs/native-client.md](docs/native-client.md)). Vanilla also has F3+F6 debug options with profiles, F3+1 the profiler pie, F3+L a ten-second capture and F3+S the atlas dump ([#562](https://github.com/horizon-rust/horizon/issues/562) asked for the F3 editor).

 </details>

@@ -814,7 +814,7 @@ An optional ray-tracing mode for graphics cards that support it (RTX and recent

 <details><summary>Technical</summary>

-A spike with ray-traced sun shadows, off by default, is a draft ([#1180](https://github.com/ludovic111/horizon/issues/1180)). Reflections, global illumination, Apple M3 and newer if it is cheap, and a performance report per card come after.
+A spike with ray-traced sun shadows, off by default, is a draft ([#1180](https://github.com/horizon-rust/horizon/issues/1180)). Reflections, global illumination, Apple M3 and newer if it is cheap, and a performance report per card come after.

 </details>

@@ -824,7 +824,7 @@ Output for HDR monitors: brighter highlights and richer colour where your screen

 <details><summary>Technical</summary>

-Issue [#1441](https://github.com/ludovic111/horizon/issues/1441). Needs a surface format and a tone-mapping path per backend, and tests on real HDR screens on Windows, macOS and Linux.
+Issue [#1441](https://github.com/horizon-rust/horizon/issues/1441). Needs a surface format and a tone-mapping path per backend, and tests on real HDR screens on Windows, macOS and Linux.

 </details>

@@ -858,7 +858,7 @@ Game and launcher builds for 64-bit ARM Linux computers.

 <details><summary>Technical</summary>

-Issue [#1709](https://github.com/ludovic111/horizon/issues/1709): aarch64 builds of the game and the launcher in the release workflow, tested on a real ARM machine with its Vulkan driver. The server build already drops audio and controllers (`--no-default-features`).
+Issue [#1709](https://github.com/horizon-rust/horizon/issues/1709): aarch64 builds of the game and the launcher in the release workflow, tested on a real ARM machine with its Vulkan driver. The server build already drops audio and controllers (`--no-default-features`).

 </details>

@@ -868,7 +868,7 @@ Versions of Horizon for Android, iOS and web browsers. Nothing official yet; con

 <details><summary>Technical</summary>

-No official build. Android was first closed as not planned, with touch controls, a mobile interface, packaging and loading the player's own assets all missing; the roadmap now includes it, iOS and a WebAssembly build for the browser as long-term goals. First pieces from contributors: `horizon-dualsense` compiling on iOS ([#1813](https://github.com/ludovic111/horizon/issues/1813)) and helper-thread limits on Android ([#1751](https://github.com/ludovic111/horizon/issues/1751)). Preparing without Java ([#1750](https://github.com/ludovic111/horizon/issues/1750)) matters here too. Horizon ships none of Mojang's files on any platform.
+No official build. Android was first closed as not planned, with touch controls, a mobile interface, packaging and loading the player's own assets all missing; the roadmap now includes it, iOS and a WebAssembly build for the browser as long-term goals. First pieces from contributors: `horizon-dualsense` compiling on iOS ([#1813](https://github.com/horizon-rust/horizon/issues/1813)) and helper-thread limits on Android ([#1751](https://github.com/horizon-rust/horizon/issues/1751)). Preparing without Java ([#1750](https://github.com/horizon-rust/horizon/issues/1750)) matters here too. Horizon ships none of Mojang's files on any platform.

 </details>

@@ -912,7 +912,7 @@ An optional AI teammate you can talk to by voice. It plays beside you, helps or

 <details><summary>Technical</summary>

-Draft pull requests: the companion ([#1068](https://github.com/ludovic111/horizon/issues/1068)), its safety modes and their evaluation ([#1069](https://github.com/ludovic111/horizon/issues/1069)) and a route that finishes the game ([#1070](https://github.com/ludovic111/horizon/issues/1070)). In the drafts: a companion that follows, fights, mines, crafts, sleeps and respawns; chat and push-to-talk voice, with speech recognition and a choice of voices; presets (very strong, helper, beat the game); a guard model with Clean, Kid and Salty modes; perception levels from Fair to All-knowing; hardware detection with a simple mode and an Advanced tab; local models first, cloud keys optional. The No AI switch is already in the game. Left: the speedrun route doesn't finish the game reliably yet, voices for more languages, and the safety evaluation, which must pass before it ships.
+Draft pull requests: the companion ([#1068](https://github.com/horizon-rust/horizon/issues/1068)), its safety modes and their evaluation ([#1069](https://github.com/horizon-rust/horizon/issues/1069)) and a route that finishes the game ([#1070](https://github.com/horizon-rust/horizon/issues/1070)). In the drafts: a companion that follows, fights, mines, crafts, sleeps and respawns; chat and push-to-talk voice, with speech recognition and a choice of voices; presets (very strong, helper, beat the game); a guard model with Clean, Kid and Salty modes; perception levels from Fair to All-knowing; hardware detection with a simple mode and an Advanced tab; local models first, cloud keys optional. The No AI switch is already in the game. Left: the speedrun route doesn't finish the game reliably yet, voices for more languages, and the safety evaluation, which must pass before it ships.

 </details>

@@ -938,7 +938,7 @@ Run Horizon's built-in benchmark and share the report: every new computer makes

 <details><summary>Technical</summary>

-`horizon-launcher play --arg=--benchmark --arg=standard` writes a JSON report; `horizon-launcher data benchmark <report>` shows what would be sent and uploads it (playhorizon.dev/docs/performance). Results from three installs with the same hardware appear on the Benchmarks page. Example: [#1711](https://github.com/ludovic111/horizon/issues/1711).
+`horizon-launcher play --arg=--benchmark --arg=standard` writes a JSON report; `horizon-launcher data benchmark <report>` shows what would be sent and uploads it (playhorizon.dev/docs/performance). Results from three installs with the same hardware appear on the Benchmarks page. Example: [#1711](https://github.com/horizon-rust/horizon/issues/1711).

 More: [https://playhorizon.dev/docs/performance](https://playhorizon.dev/docs/performance)

@@ -952,7 +952,7 @@ Banners in End cities show as plain magenta instead of with their pattern.

 <details><summary>Technical</summary>

-Compare the banner block entities the End city templates place with vanilla's (`EndCityPieces`, the templates' block entity NBT, `BannerBlockEntity`'s patterns), in `crates/horizon-world/src/worldgen/structure/`. Issue [#1438](https://github.com/ludovic111/horizon/issues/1438); possibly related: [#526](https://github.com/ludovic111/horizon/issues/526).
+Compare the banner block entities the End city templates place with vanilla's (`EndCityPieces`, the templates' block entity NBT, `BannerBlockEntity`'s patterns), in `crates/horizon-world/src/worldgen/structure/`. Issue [#1438](https://github.com/horizon-rust/horizon/issues/1438); possibly related: [#526](https://github.com/horizon-rust/horizon/issues/526).

 </details>

@@ -962,19 +962,19 @@ Armour and tools in End city chests should come enchanted, as in vanilla.

 <details><summary>Technical</summary>

-`loot.rs` implements `enchant_with_levels`: find why the End city chest table's rolls come out bare, and compare them with vanilla's for a few seeds. Issues [#1437](https://github.com/ludovic111/horizon/issues/1437), [#1660](https://github.com/ludovic111/horizon/issues/1660).
+`loot.rs` implements `enchant_with_levels`: find why the End city chest table's rolls come out bare, and compare them with vanilla's for a few seeds. Issues [#1437](https://github.com/horizon-rust/horizon/issues/1437), [#1660](https://github.com/horizon-rust/horizon/issues/1660).

 </details>

 ## Recently shipped

- **OpenGL for old computers** (v0.2.63): Horizon now starts on old PCs whose graphics card has no Vulkan or DirectX 12 driver: it switches to OpenGL by itself, and Options > Graphics can pick OpenGL by hand. [#1917](https://github.com/ludovic111/horizon/issues/1917) · [#1920](https://github.com/ludovic111/horizon/issues/1920) · [#1936](https://github.com/ludovic111/horizon/issues/1936)
- **Server resource packs** (v0.2.48): Servers can send you their resource pack: Horizon asks, downloads it and applies it, like vanilla. [#1562](https://github.com/ludovic111/horizon/issues/1562) · [#1569](https://github.com/ludovic111/horizon/issues/1569) · [#1570](https://github.com/ludovic111/horizon/issues/1570)
- **Single player on its own server thread** (v0.2.39): Single player runs on a server thread, as vanilla does, so the world keeps ticking smoothly while the window draws. [#1514](https://github.com/ludovic111/horizon/issues/1514) · [docs/server-levels.md](docs/server-levels.md)
- **GPU occlusion culling on Macs** (v0.2.17): On Macs the GPU now skips terrain hidden behind hills and caves: 8 to 48% more frames per second at 32 chunks on an M4 Pro. [#1434](https://github.com/ludovic111/horizon/issues/1434)
- **Animated textures on the GPU** (v0.2.5): Water, lava and other animated blocks are now animated by the graphics card: 1.7 to 2.4 times better 1% lows on Intel graphics. [#1239](https://github.com/ludovic111/horizon/issues/1239)
- **Far Detail for integrated graphics** (v0.2.5): An optional Reduced setting for far terrain, suggested on integrated graphics, that saves 2 to 4 ms of GPU time per frame. [#1199](https://github.com/ludovic111/horizon/issues/1199) · [#1029](https://github.com/ludovic111/horizon/issues/1029)
- **The launcher's mod browser** (launcher@0.2.0): Search Modrinth for mods, modpacks and resource packs from the launcher; it says before installing what works in Horizon. [#1154](https://github.com/ludovic111/horizon/issues/1154) · [#1242](https://github.com/ludovic111/horizon/issues/1242) · [#1243](https://github.com/ludovic111/horizon/issues/1243) · [#1246](https://github.com/ludovic111/horizon/issues/1246) · [docs/mod-browser.md](docs/mod-browser.md)
- **A blocky, Minecraft-like launcher** (launcher@0.2.0): The launcher got a new blocky look in Horizon's purple, in dark and light. [#1269](https://github.com/ludovic111/horizon/issues/1269) · [docs/design-system.md](docs/design-system.md)
- **Dynamic lights** (v2026.10.22): An optional extra: torches you hold, drop or set on fire light up what is around them. [#1162](https://github.com/ludovic111/horizon/issues/1162)
- **Host a server from the launcher** (launcher-v0.15.0): The launcher's Servers page creates, starts, backs up and updates a Horizon server with buttons, and invites friends. [#1026](https://github.com/ludovic111/horizon/issues/1026) · [docs/hosting.md](docs/hosting.md)
+- **OpenGL for old computers** (v0.2.63): Horizon now starts on old PCs whose graphics card has no Vulkan or DirectX 12 driver: it switches to OpenGL by itself, and Options > Graphics can pick OpenGL by hand. [#1917](https://github.com/horizon-rust/horizon/issues/1917) · [#1920](https://github.com/horizon-rust/horizon/issues/1920) · [#1936](https://github.com/horizon-rust/horizon/issues/1936)
+- **Server resource packs** (v0.2.48): Servers can send you their resource pack: Horizon asks, downloads it and applies it, like vanilla. [#1562](https://github.com/horizon-rust/horizon/issues/1562) · [#1569](https://github.com/horizon-rust/horizon/issues/1569) · [#1570](https://github.com/horizon-rust/horizon/issues/1570)
+- **Single player on its own server thread** (v0.2.39): Single player runs on a server thread, as vanilla does, so the world keeps ticking smoothly while the window draws. [#1514](https://github.com/horizon-rust/horizon/issues/1514) · [docs/server-levels.md](docs/server-levels.md)
+- **GPU occlusion culling on Macs** (v0.2.17): On Macs the GPU now skips terrain hidden behind hills and caves: 8 to 48% more frames per second at 32 chunks on an M4 Pro. [#1434](https://github.com/horizon-rust/horizon/issues/1434)
+- **Animated textures on the GPU** (v0.2.5): Water, lava and other animated blocks are now animated by the graphics card: 1.7 to 2.4 times better 1% lows on Intel graphics. [#1239](https://github.com/horizon-rust/horizon/issues/1239)
+- **Far Detail for integrated graphics** (v0.2.5): An optional Reduced setting for far terrain, suggested on integrated graphics, that saves 2 to 4 ms of GPU time per frame. [#1199](https://github.com/horizon-rust/horizon/issues/1199) · [#1029](https://github.com/horizon-rust/horizon/issues/1029)
+- **The launcher's mod browser** (launcher@0.2.0): Search Modrinth for mods, modpacks and resource packs from the launcher; it says before installing what works in Horizon. [#1154](https://github.com/horizon-rust/horizon/issues/1154) · [#1242](https://github.com/horizon-rust/horizon/issues/1242) · [#1243](https://github.com/horizon-rust/horizon/issues/1243) · [#1246](https://github.com/horizon-rust/horizon/issues/1246) · [docs/mod-browser.md](docs/mod-browser.md)
+- **A blocky, Minecraft-like launcher** (launcher@0.2.0): The launcher got a new blocky look in Horizon's purple, in dark and light. [#1269](https://github.com/horizon-rust/horizon/issues/1269) · [docs/design-system.md](docs/design-system.md)
+- **Dynamic lights** (v2026.10.22): An optional extra: torches you hold, drop or set on fire light up what is around them. [#1162](https://github.com/horizon-rust/horizon/issues/1162)
+- **Host a server from the launcher** (launcher-v0.15.0): The launcher's Servers page creates, starts, backs up and updates a Horizon server with buttons, and invites friends. [#1026](https://github.com/horizon-rust/horizon/issues/1026) · [docs/hosting.md](docs/hosting.md)
@@ -119,7 +119,7 @@ machines during the runs.

 ## Reproduce

-    curl -fsSL https://raw.githubusercontent.com/ludovic111/horizon/main/packaging/server/install.sh | sh
+    curl -fsSL https://raw.githubusercontent.com/horizon-rust/horizon/main/packaging/server/install.sh | sh
    horizon-prepare --prepare --server-jar /path/to/server.jar      # your own copy
    cargo build --release -p horizon-bots                            # on the machine that runs the bots
    # in a checkout whose .local/minecraft holds the pinned vanilla jars (tools/lab.py prepare):
@@ -148,7 +148,7 @@ early, wrote no report. Its lines come from its output.

 ## Reproduce

-    curl -fsSL https://raw.githubusercontent.com/ludovic111/horizon/main/packaging/server/install.sh | sh
+    curl -fsSL https://raw.githubusercontent.com/horizon-rust/horizon/main/packaging/server/install.sh | sh
    horizon-prepare --prepare --server-jar /path/to/server.jar      # your own copy
    cargo build --release -p horizon-bots                            # on the machine that runs the bots
    # in a checkout whose .local/minecraft holds the pinned vanilla jars (tools/lab.py prepare):
@@ -103,7 +103,7 @@ the Nix store, so the run set `LD_LIBRARY_PATH` to them (see #898).

 ## Reproduce

-    curl -fsSL https://raw.githubusercontent.com/ludovic111/horizon/main/packaging/server/install.sh | sh
+    curl -fsSL https://raw.githubusercontent.com/horizon-rust/horizon/main/packaging/server/install.sh | sh
    horizon-prepare --prepare --server-jar /path/to/server.jar      # your own copy
    cargo build --release -p horizon-bots                            # on the machine that runs the bots
    # in a checkout whose .local/minecraft holds the pinned vanilla jars (tools/lab.py prepare):
@@ -97,6 +97,9 @@ impl Report {
        for r in &f.requires {
            out += &format!("  needs {} {} ({})\n", r.id, r.version, &r.sha256[..12]);
        }
+        if self.kind == Kind::NativeMod {
+            out += "  native source: unsandboxed; not executed by the registry check. Compile and test against the exact pinned Horizon and Mixins revisions before review.\n";
+        }
        if self.kind == Kind::Mod && !self.code {
            out += "  no code: content only, nothing to run\n";
        } else if self.kind == Kind::Mod {
@@ -118,6 +121,7 @@ impl Report {
 pub fn kind_of(path: &Path) -> Option<Kind> {
    match path.extension()?.to_str()? {
        "hmod" => Some(Kind::Mod),
+        "hnmod" => Some(Kind::NativeMod),
        "hpack" => Some(Kind::Modpack),
        "zip" => Some(Kind::ResourcePack),
        "hshader" => Some(Kind::Shader),
@@ -25,7 +25,7 @@ use std::{
 };

 const TARGET: &str = "wasm32-unknown-unknown";
-const SDK_GIT: &str = "{ git = \"https://github.com/ludovic111/horizon\" }";
+const SDK_GIT: &str = "{ git = \"https://github.com/horizon-rust/horizon\" }";

 fn main() -> ExitCode {
    // Cargo runs `cargo-horizon-mod horizon-mod <args>`.
@@ -1,5 +1,5 @@
 //! `cargo horizon-mod registry build|review|check|list`: the registry repository's CI
-//! (`ludovic111/horizon-mods`, docs/api/mod-index.md). Network-free: the
+//! (`horizon-rust/horizon-mods`, docs/api/mod-index.md). Network-free: the
 //! workflow downloads the files and publishes what this writes.
 use horizon_mods::index::{
    FILE_HOST,
@@ -8,7 +8,7 @@ use horizon_mods::index::{
 use std::path::Path;

 /// Where the registry's site is published (its icons).
-const SITE: &str = "https://ludovic111.github.io/horizon-mods/";
+const SITE: &str = "https://horizon-rust.github.io/horizon-mods/";

 const USAGE: &str = "usage: cargo horizon-mod registry build <checkout> --files <dir> --out <index.json> [--release <url>] [--site <url>] [--generated <time>]
       cargo horizon-mod registry review <base checkout> <head checkout> --author <login> [--json]
@@ -1,6 +1,7 @@
 //! Text components from commands: `ComponentArgument` reads an SNBT (or JSON)
 //! value, `ComponentSerialization` turns it into styled text.
 use crate::text::{Style, Text, named_color};
+use horizon_world::nbt::Tag;
 use serde_json::{Map, Value};

 /// `SnbtGrammar`, enough for components: compounds, lists, quoted and
@@ -190,19 +191,31 @@ fn object_style(o: &serde_json::Map<String, Value>) -> Style {
                .filter(|p| *p >= 1)
                .map(crate::text::ClickEvent::ChangePage),
            Some("suggest_command") => text("command").map(crate::text::ClickEvent::SuggestCommand),
+            Some("run_command") => text("command").map(crate::text::ClickEvent::RunCommand),
            Some("copy_to_clipboard") => {
                text("value").map(crate::text::ClickEvent::CopyToClipboard)
            }
            _ => None,
        };
    }
-    // HoverEvent.ShowText.
-    if let Some(e) = o.get("hover_event").and_then(Value::as_object)
-        && e.get("action").and_then(Value::as_str) == Some("show_text")
-        && let Some(value) = e.get("value")
-    {
-        style.hover = Some(Box::new(to_text(value, &mut |s| Text::literal(s))));
+    // HoverEvent.ShowText and ShowItem.
+    if let Some(e) = o.get("hover_event").and_then(Value::as_object) {
+        match e.get("action").and_then(Value::as_str) {
+            Some("show_text") => {
+                if let Some(value) = e.get("value") {
+                    style.hover = Some(Box::new(to_text(value, &mut |s| Text::literal(s))));
+                }
+            }
+            Some("show_item") if e.get("id").is_some_and(Value::is_string) => {
+                style.hover_item = Some(Box::new(Value::Object(e.clone())));
+            }
+            _ => {}
+        }
    }
+    style.insertion = o
+        .get("insertion")
+        .and_then(Value::as_str)
+        .map(str::to_owned);
    style
 }
 /// `ComponentSerialization.CODEC` decoding into text. `selector` components
@@ -287,6 +300,15 @@ pub fn to_text_with(
    }
 }

+/// `CustomName` as text: a string keeps its legacy formatting codes, anything
+/// else is a component (`ComponentSerialization`).
+pub fn name_text(tag: &Tag) -> Text {
+    match tag {
+        Tag::String(s) => Text::legacy(&s.to_string_lossy()),
+        t => crate::scoreboard::comp_text(&crate::scoreboard::tag_to_json(t)),
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -16,3 +16,20 @@ pub fn parse_identifier(raw: &str) -> Option<String> {
    });
    (ns_ok && path_ok).then(|| format!("{ns}:{path}"))
 }
+
+/// `Identifier.CODEC` parsing an entity id: lowercase namespace and path
+/// characters, `minecraft` when the namespace is left out.
+pub fn normalize_id(s: &str) -> Option<String> {
+    let (ns, path) = match s.split_once(':') {
+        Some((ns, path)) => (if ns.is_empty() { "minecraft" } else { ns }, path),
+        None => ("minecraft", s),
+    };
+    let ok = |c: char, slash: bool| {
+        c.is_ascii_lowercase()
+            || c.is_ascii_digit()
+            || matches!(c, '_' | '-' | '.')
+            || slash && c == '/'
+    };
+    (ns.chars().all(|c| ok(c, false)) && path.chars().all(|c| ok(c, true)))
+        .then(|| format!("{ns}:{path}"))
+}
@@ -14,6 +14,7 @@ pub mod identifier;
 pub mod key_display;
 pub mod lang;
 pub mod nbt_path;
+pub mod nbt_value;
 pub mod particle_type;
 pub mod pattern;
 pub mod potions;
@@ -23,4 +24,5 @@ pub mod snbt;
 pub mod sound_source;
 pub mod text;
 pub mod uuid;
+pub mod who;
 pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
@@ -0,0 +1,32 @@
+//! Reading and writing single NBT values the way vanilla's codecs accept them.
+use horizon_world::nbt::Tag;
+
+pub fn string(s: &str) -> Tag {
+    Tag::String(s.into())
+}
+pub fn text(tag: Option<&Tag>) -> Option<String> {
+    match tag {
+        Some(Tag::String(s)) => Some(s.to_string_lossy()),
+        _ => None,
+    }
+}
+/// Any numeric tag as i64 (vanilla's `getIntOr` etc. accept every number type).
+pub fn number(tag: Option<&Tag>) -> Option<i64> {
+    Some(match tag? {
+        Tag::Byte(v) => i64::from(*v),
+        Tag::Short(v) => i64::from(*v),
+        Tag::Int(v) => i64::from(*v),
+        Tag::Long(v) => *v,
+        Tag::Float(b) => f32::from_bits(*b) as i64,
+        Tag::Double(b) => f64::from_bits(*b) as i64,
+        _ => return None,
+    })
+}
+/// Any numeric tag as f64, keeping a float's or double's fraction.
+pub fn float(tag: Option<&Tag>) -> Option<f64> {
+    Some(match tag? {
+        Tag::Float(b) => f64::from(f32::from_bits(*b)),
+        Tag::Double(b) => f64::from_bits(*b),
+        other => number(Some(other))? as f64,
+    })
+}
@@ -47,6 +47,8 @@ pub enum ClickEvent {
    /// `ClickEvent.ChangePage`: a book's page, counted from 1.
    ChangePage(i32),
    SuggestCommand(String),
+    /// `ClickEvent.RunCommand`: the command, with or without its `/`.
+    RunCommand(String),
    CopyToClipboard(String),
    /// A local file to open with the system handler.
    /// Only allow this in locally constructed messages, never server/LAN text.
@@ -65,6 +67,10 @@ pub struct Style {
    pub click: Option<ClickEvent>,
    /// Hover text.
    pub hover: Option<Box<Text>>,
+    /// `HoverEvent.ShowItem`: the event's `{id, count?, components?}` object.
+    pub hover_item: Option<Box<Value>>,
+    /// `Style.insertion`: the text a Shift-click puts in the chat box.
+    pub insertion: Option<String>,
    /// The font (`FontDescription.Resource`), a full id like
    /// `minecraft:alt`; the default font when unset.
    pub font: Option<String>,
@@ -94,6 +100,12 @@ impl Style {
        if self.hover.is_none() {
            self.hover.clone_from(&base.hover);
        }
+        if self.hover_item.is_none() {
+            self.hover_item.clone_from(&base.hover_item);
+        }
+        if self.insertion.is_none() {
+            self.insertion.clone_from(&base.insertion);
+        }
        if self.font.is_none() {
            self.font.clone_from(&base.font);
        }
@@ -499,7 +511,7 @@ impl Text {
 }

 /// The style fields of a component's JSON.
-const STYLE_KEYS: [&str; 9] = [
+const STYLE_KEYS: [&str; 10] = [
    "color",
    "bold",
    "italic",
@@ -508,6 +520,7 @@ const STYLE_KEYS: [&str; 9] = [
    "obfuscated",
    "click_event",
    "hover_event",
+    "insertion",
    "font",
 ];
 /// Style.Serializer: the fields a style sets.
@@ -541,6 +554,9 @@ fn style_json(style: &Style) -> Vec<(String, Value)> {
            ClickEvent::CopyToClipboard(value) => {
                json!({ "action": "copy_to_clipboard", "value": value })
            }
+            ClickEvent::RunCommand(command) => {
+                json!({ "action": "run_command", "command": command })
+            }
            ClickEvent::OpenFile(path) => json!({ "action": "open_file", "path": path }),
        };
        out.push(("click_event".to_owned(), event));
@@ -550,6 +566,13 @@ fn style_json(style: &Style) -> Vec<(String, Value)> {
            "hover_event".to_owned(),
            json!({ "action": "show_text", "value": hover.component() }),
        ));
+    } else if let Some(Value::Object(item)) = style.hover_item.as_deref() {
+        let mut event = item.clone();
+        event.insert("action".into(), "show_item".into());
+        out.push(("hover_event".to_owned(), Value::Object(event)));
+    }
+    if let Some(insertion) = &style.insertion {
+        out.push(("insertion".to_owned(), insertion.clone().into()));
    }
    if let Some(font) = &style.font {
        out.push(("font".to_owned(), font.clone().into()));
@@ -0,0 +1,8 @@
+//! Who an action came from or is aimed at: the player or a mob by id.
+
+/// Who caused damage or is being targeted.
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
+pub enum Who {
+    Player,
+    Mob(u32),
+}
@@ -0,0 +1,23 @@
+[package]
+name = "horizon-client-input"
+version = "0.1.0"
+edition.workspace = true
+license.workspace = true
+rust-version = "1.90"
+description = "The client's input layer: key bindings and their names, mouse, controllers, clipboard and window options"
+
+[dependencies]
+horizon-client-core = { path = "../horizon-client-core" }
+winit = "0.30.13"
+# The window icon.
+horizon-theme = { path = "../horizon-theme" }
+png = "0.18"
+arboard = { version = "3.6.1", default-features = false, features = ["wayland-data-control"] }
+# The DualSense's trigger effects (the `controllers` feature).
+horizon-dualsense = { path = "../horizon-dualsense", optional = true }
+
+[features]
+controllers = ["dep:horizon-dualsense"]
+
+[lints]
+workspace = true
@@ -145,6 +145,22 @@ const KEYS: &[(&str, KeyCode)] = &[
    ("key.keyboard.period", KeyCode::Period),
    ("key.keyboard.slash", KeyCode::Slash),
    ("key.keyboard.caps.lock", KeyCode::CapsLock),
+    ("key.keyboard.world.1", KeyCode::IntlBackslash),
+    ("key.keyboard.international1", KeyCode::IntlRo),
+    ("key.keyboard.international3", KeyCode::IntlYen),
+    ("key.keyboard.lang1", KeyCode::Lang1),
+    ("key.keyboard.lang2", KeyCode::Lang2),
+    ("key.keyboard.lang3", KeyCode::Lang3),
+    ("key.keyboard.lang4", KeyCode::Lang4),
+    ("key.keyboard.lang5", KeyCode::Lang5),
+    ("key.keyboard.help", KeyCode::Help),
+    ("key.keyboard.select", KeyCode::Select),
+    ("key.keyboard.again", KeyCode::Again),
+    ("key.keyboard.undo", KeyCode::Undo),
+    ("key.keyboard.cut", KeyCode::Cut),
+    ("key.keyboard.copy", KeyCode::Copy),
+    ("key.keyboard.paste", KeyCode::Paste),
+    ("key.keyboard.find", KeyCode::Find),
    ("key.keyboard.f1", KeyCode::F1),
    ("key.keyboard.f2", KeyCode::F2),
    ("key.keyboard.f3", KeyCode::F3),
@@ -157,6 +173,18 @@ const KEYS: &[(&str, KeyCode)] = &[
    ("key.keyboard.f10", KeyCode::F10),
    ("key.keyboard.f11", KeyCode::F11),
    ("key.keyboard.f12", KeyCode::F12),
+    ("key.keyboard.f13", KeyCode::F13),
+    ("key.keyboard.f14", KeyCode::F14),
+    ("key.keyboard.f15", KeyCode::F15),
+    ("key.keyboard.f16", KeyCode::F16),
+    ("key.keyboard.f17", KeyCode::F17),
+    ("key.keyboard.f18", KeyCode::F18),
+    ("key.keyboard.f19", KeyCode::F19),
+    ("key.keyboard.f20", KeyCode::F20),
+    ("key.keyboard.f21", KeyCode::F21),
+    ("key.keyboard.f22", KeyCode::F22),
+    ("key.keyboard.f23", KeyCode::F23),
+    ("key.keyboard.f24", KeyCode::F24),
    ("key.keyboard.print.screen", KeyCode::PrintScreen),
    ("key.keyboard.scroll.lock", KeyCode::ScrollLock),
    ("key.keyboard.pause", KeyCode::Pause),
@@ -188,6 +216,36 @@ const KEYS: &[(&str, KeyCode)] = &[
    ("key.keyboard.keypad.0", KeyCode::Numpad0),
    ("key.keyboard.keypad.period", KeyCode::NumpadDecimal),
    ("key.keyboard.keypad.equal", KeyCode::NumpadEqual),
+    ("key.keyboard.keypad.comma", KeyCode::NumpadComma),
+    ("key.keyboard.keypad.backspace", KeyCode::NumpadBackspace),
+    (
+        "key.keyboard.keypad.left.parenthesis",
+        KeyCode::NumpadParenLeft,
+    ),
+    (
+        "key.keyboard.keypad.right.parenthesis",
+        KeyCode::NumpadParenRight,
+    ),
+    ("key.keyboard.keypad.hash", KeyCode::NumpadHash),
+    (
+        "key.keyboard.keypad.memory.store",
+        KeyCode::NumpadMemoryStore,
+    ),
+    (
+        "key.keyboard.keypad.memory.recall",
+        KeyCode::NumpadMemoryRecall,
+    ),
+    (
+        "key.keyboard.keypad.memory.clear",
+        KeyCode::NumpadMemoryClear,
+    ),
+    ("key.keyboard.keypad.memory.add", KeyCode::NumpadMemoryAdd),
+    (
+        "key.keyboard.keypad.memory.subtract",
+        KeyCode::NumpadMemorySubtract,
+    ),
+    ("key.keyboard.keypad.clear", KeyCode::NumpadClear),
+    ("key.keyboard.keypad.clear.entry", KeyCode::NumpadClearEntry),
    ("key.keyboard.menu", KeyCode::ContextMenu),
    ("key.keyboard.left.control", KeyCode::ControlLeft),
    ("key.keyboard.left.shift", KeyCode::ShiftLeft),
@@ -0,0 +1,14 @@
+//! The client's input layer, below gameplay and screens: key bindings and their
+//! names, toggle keys, mouse settings, controllers, the clipboard and window
+//! options. horizon-client re-exports each module under its old path
+//! (`horizon_client::keybinds`, ...).
+#![forbid(unsafe_code)]
+pub mod clipboard;
+pub mod gamepad;
+pub mod input;
+pub mod interaction_input;
+pub mod key_names;
+pub mod keybinds;
+pub mod keymapping;
+pub mod mouse;
+pub mod window;
@@ -324,6 +324,24 @@ pub fn ease_in_out(t: f64) -> f64 {
    0.5 - 0.5 * (std::f64::consts::PI * t).cos()
 }

+/// `MouseHandler.grabMouse` / `releaseMouse`: the mouse position is the
+/// window's centre whenever the pointer's grab state changes, so a screen
+/// opened from gameplay starts with the cursor in the middle. A release of
+/// an already free pointer (or a grab of an already grabbed one) leaves the
+/// position where it is, as vanilla does.
+pub fn mouse_position_after_grab_change(
+    grab: bool,
+    was_grabbed: bool,
+    size: [u32; 2],
+    scale: f32,
+) -> Option<(f32, f32)> {
+    if grab == was_grabbed {
+        None
+    } else {
+        Some((size[0] as f32 / 2.0 / scale, size[1] as f32 / 2.0 / scale))
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -485,4 +503,27 @@ mod tests {
        assert_eq!(look.on_scroll(0.0, 0.4, false, 1.0), None);
        assert_eq!(look.on_scroll(0.0, 0.7, false, 1.0), Some((1, (0, 1))));
    }
+    #[test]
+    fn the_mouse_position_is_the_centre_when_the_grab_changes() {
+        // A grab of a free pointer and a release of a grabbed one both put
+        // the position at the window's centre (`MouseHandler.grabMouse`,
+        // `MouseHandler.releaseMouse`).
+        assert_eq!(
+            mouse_position_after_grab_change(true, false, [1920, 1080], 1.0),
+            Some((960.0, 540.0))
+        );
+        assert_eq!(
+            mouse_position_after_grab_change(false, true, [1920, 1080], 2.0),
+            Some((480.0, 270.0))
+        );
+        // Without a change of the grab state the position stays where it is.
+        assert_eq!(
+            mouse_position_after_grab_change(false, false, [1920, 1080], 1.0),
+            None
+        );
+        assert_eq!(
+            mouse_position_after_grab_change(true, true, [1920, 1080], 1.0),
+            None
+        );
+    }
 }
@@ -10,7 +10,9 @@ description = "Horizon native development client"
 [dependencies]
 horizon-assets = { path = "../horizon-assets" }
 horizon-client-core = { path = "../horizon-client-core" }
+horizon-client-input = { path = "../horizon-client-input" }
 horizon-command = { path = "../horizon-command" }
+horizon-items = { path = "../horizon-items" }
 horizon-core = { path = "../horizon-core" }
 # The server thread ahead of the workers (MinecraftServer.spin's Thread.setPriority).
 horizon-threads = { path = "../horizon-threads" }
@@ -54,7 +56,6 @@ horizon-theme = { path = "../horizon-theme" }
 # the anonymous "I'm playing" ping the game sends itself (`heartbeat.rs`).
 horizon-telemetry = { path = "../horizon-telemetry", default-features = false, features = ["live"] }
 horizon-bench = { path = "../horizon-bench" }
-arboard = { version = "3.6.1", default-features = false, features = ["wayland-data-control"] }
 zip = { version = "2", default-features = false, features = ["deflate"] }
 # Controllers (evdev + libudev on Linux, IOKit on macOS, Windows.Gaming.Input); the `controllers` feature.
 gilrs = { version = "0.11", optional = true }
@@ -89,7 +90,7 @@ default = ["audio", "controllers"]
 # Linux: the server build (`--no-default-features`, released as horizon-engine; docs/server.md).
 audio = ["dep:cpal"]
 # Controllers: gilrs, and the DualSense's own output. Without it only `horizon-ctl pad`'s virtual pad.
-controllers = ["dep:gilrs", "dep:horizon-dualsense"]
+controllers = ["dep:gilrs", "dep:horizon-dualsense", "horizon-client-input/controllers"]
 # Runs code mods (wasmtime and cranelift: a quarter of a clean build). On in every release build
 # (release.yml); the tests and probes don't need it. Content mods load without it.
 mods = ["horizon-mods/runtime"]
@@ -105,5 +106,6 @@ path = "examples/probe/main.rs"
 workspace = true

 [dev-dependencies]
+horizon-items = { path = "../horizon-items", features = ["test-support"] }
 # Every WGSL shader translated as wgpu's DirectX 12 backend does (gfx.rs tests).
 naga = { version = "30.0.1", features = ["wgsl-in", "hlsl-out", "msl-out", "spv-out"] }
@@ -2,7 +2,7 @@
 //! Build with `cargo build --release -p horizon-client --example gameplay_decode_profile`.
 //! Each invocation runs one phase in a separate process for CPU/RSS measurements.
 #[allow(dead_code)]
-#[path = "../src/blocks/decode.rs"]
+#[path = "../../horizon-items/src/blocks/decode.rs"]
 mod decode;

 use std::{hint::black_box, path::Path, time::Instant};
@@ -54,7 +54,7 @@ pub fn main() -> Result<()> {
            match c["axis"].as_i64() {
                Some(axis @ 0..=2) => {
                    let line = record("electric_spark");
-                    particles::along_axis(&mut random, axis as usize, p, |p, v| {
+                    particles::along_axis(&mut random, axis as usize, p, (10, 19), |p, v| {
                        lines.push(line(p, v))
                    });
                }
@@ -24,6 +24,7 @@ fn stack(spec: &str) -> LootStack {
        exploration: None,
        ominous_amplifier: None,
        stew_effects: Vec::new(),
+        names: Vec::new(),
    };
    for e in parts {
        let (name, level) = e.rsplit_once(':').unwrap_or((e, "1"));
@@ -223,6 +223,7 @@ fn decorations(c: &Value, atlas: &HudAtlas) -> Vec<GuiDraw> {
            display_health: int("displayHealth", 0),
            last_health_time: millis - i64::from(int("lastHealthAgo", 0)),
            health_blink_time: i64::from(int("healthBlinkTime", 0)),
+            ..HealthHud::default()
        };
        let kind = if has("minecraft:poison") {
            HeartKind::Poisoned
@@ -101,7 +101,7 @@ fn title(c: &Value, w: i32, h: i32, atlas: &HudAtlas) -> Vec<GuiDraw> {
    }
    let partial = float(c, "partial", 0.0);
    let bg = background(c);
-    let mut out = t.overlay_message(w, h, partial, &atlas.font, bg);
+    let mut out = t.overlay_message(w, h, 39, partial, &atlas.font, bg);
    out.extend(t.title(w, h, partial, &atlas.font, bg));
    out
 }
@@ -129,7 +129,7 @@ fn selected(c: &Value, w: i32, h: i32, atlas: &HudAtlas) -> Vec<GuiDraw> {
    }
    let mode = c["gameMode"].as_str().unwrap_or("survival");
    let can_hurt = mode == "survival" || mode == "adventure";
-    highlight.draw(w, h, can_hurt, &atlas.font, background(c))
+    highlight.draw(w, h, 39, can_hurt, &atlas.font, background(c))
 }

 fn boss(c: &Value, w: i32, h: i32, atlas: &HudAtlas) -> Vec<GuiDraw> {
@@ -74,7 +74,14 @@ pub fn main() -> Result<()> {
            biomes: &biomes,
            registry: assets.registry,
            raining_at: &|_| false,
+            height_no_leaves: &|_| 0,
+            firefly_bush_sounds: false,
+            sky_darken: 0,
            marker: target.map(|name| (name, &options as &dyn Fn(_) -> _)),
+            model_offset: &|_, _, _| None,
+            gateway_particles: &|_, _| 0,
+            thundering: false,
+            ultrawarm: false,
        };
        engine.seed_randoms(1057, 0, 0);
        engine.requested = Some(Vec::new());
@@ -7,6 +7,7 @@
 use horizon_client::{
    containers::{Furnace, FurnaceKind},
    crafting::Recipes,
+    furnace::FurnaceCooking,
    item_data::{canon_stack, parse_stack},
    items::Items,
    menu::{Env, Input, Kind, Menu},
@@ -567,7 +567,13 @@ fn print_heart(
 /// The damage of a mob's direct hit on the player (others count as none).
 fn player_damage(e: &MobEvent) -> f32 {
    match e {
-        MobEvent::AttackPlayer(amount, _) | MobEvent::DamagePlayer { amount, .. } => *amount,
+        MobEvent::AttackPlayer(amount, _)
+        | MobEvent::AttackPlayerWithEffect { amount, .. }
+        | MobEvent::DamagePlayer { amount, .. } => *amount,
+        MobEvent::SonicBoom {
+            target: Who::Player,
+            ..
+        } => 10.0,
        _ => 0.0,
    }
 }
@@ -578,7 +584,13 @@ fn player_hurt(player: Option<&PlayerView>, e: &MobEvent) -> bool {
        return false;
    };
    match e {
-        MobEvent::AttackPlayer(amount, _) | MobEvent::DamagePlayer { amount, .. } => *amount > 0.0,
+        MobEvent::AttackPlayer(amount, _)
+        | MobEvent::AttackPlayerWithEffect { amount, .. }
+        | MobEvent::DamagePlayer { amount, .. } => *amount > 0.0,
+        MobEvent::SonicBoom {
+            target: Who::Player,
+            ..
+        } => true,
        // ServerExplosion.hurtEntities: within twice the radius every hit does damage.
        MobEvent::Explode(at, radius, _) => {
            let d = Vec3::new(at[0], at[1], at[2])
@@ -1045,6 +1057,7 @@ pub fn main() -> horizon_client::Result<()> {
                alive: true,
                creative: s.creative,
                sneaking: false,
+                swimming: false,
                look: [0.0, 0.0, 1.0],
                main_hand: s.hand.as_deref().map(Into::into),
                off_hand: None,
@@ -1064,6 +1077,8 @@ pub fn main() -> horizon_client::Result<()> {
                uuid: PLAYER_UUID,
                allies: Default::default(),
                remote: false,
+                sleeping: false,
+                sleep_timer: 0,
                passenger: false,
            }
        });
@@ -208,7 +208,7 @@ fn snapshot(out: &mut impl Write, player: &PlayerMotion) -> Result<()> {
            )),
            MotionEvent::Emission {
                state,
-                in_water: true,
+                muffled: true,
                ..
            } => Some(format!("muffled-step {}", state.0)),
            MotionEvent::BubbleColumnParticle { bubble, position } => Some(format!(
@@ -4,7 +4,7 @@
 //! conditions advancements use).
 use serde_json::Value;
 use std::{
-    collections::{BTreeMap, HashMap},
+    collections::{BTreeMap, BTreeSet, HashMap},
    path::Path,
 };

@@ -753,6 +753,41 @@ pub fn entity(v: &Value, e: &EntityView, w: &dyn World, origin: [f64; 3]) -> boo
    }
    true
 }
+/// `KilledByArrowTrigger.TriggerInstance.matches`: the weapon, each listed
+/// victim condition matched by a distinct victim, and the count of entity types.
+pub fn killed_by_arrow(
+    c: &Value,
+    me: &EntityView,
+    victims: &[EntityView],
+    weapon: Option<&ItemView>,
+    w: &dyn World,
+) -> bool {
+    fn ctx<'a>(e: &'a EntityView, me: &EntityView) -> Entities<'a> {
+        Entities {
+            this: Some(e),
+            origin: me.position,
+            tool: None,
+            block_pos: None,
+        }
+    }
+    if !conditions(&c["player"], &ctx(me, me), w) {
+        return false;
+    }
+    if !c["fired_from_weapon"].is_null()
+        && !weapon.is_some_and(|it| item(&c["fired_from_weapon"], it, w))
+    {
+        return false;
+    }
+    let mut left: Vec<&EntityView> = victims.iter().collect();
+    for want in c["victims"].as_array().into_iter().flatten() {
+        let Some(i) = left.iter().position(|e| conditions(want, &ctx(e, me), w)) else {
+            return false;
+        };
+        left.remove(i);
+    }
+    let kinds: BTreeSet<&str> = victims.iter().map(|e| e.kind.as_str()).collect();
+    range_i(&c["unique_entity_types"], kinds.len() as i64)
+}
 /// A damage event as `DamagePredicate` sees it.
 #[derive(Clone, Debug, Default)]
 pub struct DamageView {
@@ -8,7 +8,7 @@ use crate::{
    blocks::{BlockFacts, Fluid},
    command::args::GameMode,
    items::ItemStack,
-    particles::{ParticleEngine, ParticleOptions, ParticleType as T},
+    particles::{ParticleEngine, ParticleOptions, ParticleType as T, along_axis},
    world::World,
 };
 use horizon_core::{
@@ -75,8 +75,32 @@ enum Animate {
        waterlogged: bool,
    },
    EndPortal,
+    /// A powered lever: its facing and the direction it is attached toward.
+    Lever {
+        facing: [i32; 3],
+        connected: [i32; 3],
+    },
+    /// A powered repeater.
+    Repeater {
+        facing: [i32; 3],
+        delay: i32,
+    },
+    /// A free-hanging stalactite tip that is not waterlogged.
+    PointedDripstone,
+    WitherRose,
+    EndGateway,
+    /// A lightning rod, by the axis it points along (0, 1, 2 for X, Y, Z).
+    LightningRod(usize),
    /// `WetSpongeBlock.animateTick`.
    WetSponge,
+    FireflyBush,
+    /// An open eyeblossom (`Type.OPEN.emitSounds()`).
+    OpenEyeblossom,
+    PaleHangingMoss,
+    /// `DryVegetationBlock`: a dead bush.
+    DeadBush,
+    /// `ShortDryGrassBlock` and `TallDryGrassBlock`.
+    DryGrass,
 }
 fn step(facing: &str) -> [i32; 3] {
    match facing {
@@ -91,6 +115,7 @@ fn step(facing: &str) -> [i32; 3] {
 fn classify(name: &str, prop: &dyn Fn(&str) -> Option<String>) -> Animate {
    let name = name.strip_prefix("minecraft:").unwrap_or(name);
    let lit = prop("lit").as_deref() == Some("true");
+    let powered = prop("powered").as_deref() == Some("true");
    let facing = || step(&prop("facing").unwrap_or_default());
    match name {
        "torch" => Animate::Torch(T::Flame),
@@ -172,10 +197,47 @@ fn classify(name: &str, prop: &dyn Fn(&str) -> Option<String>) -> Animate {
            waterlogged: prop("waterlogged").as_deref() == Some("true"),
        },
        "end_portal" => Animate::EndPortal,
+        "lever" if powered => Animate::Lever {
+            facing: facing(),
+            // FaceAttachedHorizontalDirectionalBlock.getConnectedDirection.
+            connected: match prop("face").as_deref() {
+                Some("ceiling") => [0, -1, 0],
+                Some("floor") => [0, 1, 0],
+                _ => facing(),
+            },
+        },
+        "repeater" if powered => Animate::Repeater {
+            facing: facing(),
+            delay: prop("delay").and_then(|d| d.parse().ok()).unwrap_or(1),
+        },
+        "pointed_dripstone"
+            if prop("vertical_direction").as_deref() == Some("down")
+                && prop("thickness").as_deref() == Some("tip")
+                && prop("waterlogged").as_deref() != Some("true") =>
+        {
+            Animate::PointedDripstone
+        }
+        "wither_rose" => Animate::WitherRose,
+        "end_gateway" => Animate::EndGateway,
+        _ if name == "lightning_rod" || name.ends_with("_lightning_rod") => {
+            let [dx, dy, _] = facing();
+            Animate::LightningRod(if dx != 0 {
+                0
+            } else if dy != 0 {
+                1
+            } else {
+                2
+            })
+        }
        "wet_sponge" => Animate::WetSponge,
        // BrushableBlock has no dust colour of its own, so the dust is the map colour.
        "suspicious_sand" => Animate::Falling(0xF7E9A3, false),
        "suspicious_gravel" => Animate::Falling(0x707070, false),
+        "firefly_bush" => Animate::FireflyBush,
+        "open_eyeblossom" => Animate::OpenEyeblossom,
+        "pale_hanging_moss" => Animate::PaleHangingMoss,
+        "dead_bush" => Animate::DeadBush,
+        "short_dry_grass" | "tall_dry_grass" => Animate::DryGrass,
        "sculk_sensor" | "calibrated_sculk_sensor"
            if prop("sculk_sensor_phase").as_deref() == Some("active") =>
        {
@@ -246,10 +308,16 @@ pub struct AnimateTables {
    desert_sand_sounds: Vec<bool>,
    /// `#required_for_poplar_leaf_ambience` (overworld natural logs).
    poplar_leaf_logs: Vec<bool>,
+    /// `#triggers_ambient_desert_dry_vegetation_block_sounds`.
+    desert_dry_vegetation_sounds: Vec<bool>,
+    terracotta: Vec<bool>,
+    pale_oak_logs: Vec<bool>,
    /// `FireBlock.canBurn`: states with ignite odds above zero (none waterlogged).
    burnable: Vec<bool>,
    /// Biome id -> ambient particles and probabilities (`minecraft:visual/ambient_particles`).
    ambient: Vec<Vec<(T, f32)>>,
+    /// Per state: 1 for a pointed dripstone, 2 for one whose tip points down.
+    dripstone: Vec<u8>,
 }
 impl AnimateTables {
    pub fn load(root: &Path, registry: &BlockRegistry, biomes: &Biomes) -> crate::Result<Self> {
@@ -315,14 +383,36 @@ impl AnimateTables {
                }
            }
        }
+        let dripstone = (0..registry.len() as u32)
+            .map(|id| {
+                registry.state(BlockStateId(id)).map_or(0, |s| {
+                    let name = s.name.strip_prefix("minecraft:").unwrap_or(&s.name);
+                    if name != "pointed_dripstone" {
+                        0
+                    } else if s.properties.get("vertical_direction").map(String::as_str)
+                        == Some("down")
+                    {
+                        2
+                    } else {
+                        1
+                    }
+                })
+            })
+            .collect();
        Ok(Self {
            kinds,
+            dripstone,
            impermeable: by_state("minecraft:impermeable"),
            power_provider: by_state("minecraft:enchantment_power_provider"),
            power_transmitter: by_state("minecraft:enchantment_power_transmitter"),
            dried_ghast_sounds: by_state("minecraft:triggers_ambient_dried_ghast_block_sounds"),
            desert_sand_sounds: by_state("minecraft:triggers_ambient_desert_sand_block_sounds"),
            poplar_leaf_logs: by_state("minecraft:required_for_poplar_leaf_ambience"),
+            desert_dry_vegetation_sounds: by_state(
+                "minecraft:triggers_ambient_desert_dry_vegetation_block_sounds",
+            ),
+            terracotta: by_state("minecraft:terracotta"),
+            pale_oak_logs: by_state("minecraft:pale_oak_logs"),
            burnable,
            ambient,
        })
@@ -348,8 +438,22 @@ pub struct AnimateContext<'a> {
    pub registry: &'a BlockRegistry,
    /// `Level.isRainingAt`.
    pub raining_at: &'a dyn Fn([i32; 3]) -> bool,
+    /// `getHeight(MOTION_BLOCKING_NO_LEAVES, x, z)` at a position's column.
+    pub height_no_leaves: &'a dyn Fn([i32; 3]) -> i32,
+    /// `EnvironmentAttributes.FIREFLY_BUSH_SOUNDS` (overworld day timeline).
+    pub firefly_bush_sounds: bool,
+    /// `Level.getSkyDarken`, for `getMaxLocalRawBrightness`.
+    pub sky_darken: i32,
    /// Creative main-hand marker block and a resolver for each placed state's sprite.
    pub marker: Option<(&'a str, &'a dyn Fn(BlockStateId) -> Option<ParticleOptions>)>,
+    /// `BlockState.getOffset` of a state at (x, z), for blocks with a random model offset.
+    pub model_offset: &'a dyn Fn(BlockStateId, i32, i32) -> Option<[f64; 3]>,
+    /// `TheEndGatewayBlockEntity.getParticleAmount` of the gateway state at a position.
+    pub gateway_particles: &'a dyn Fn(BlockStateId, [i32; 3]) -> usize,
+    /// `Level.isThundering`.
+    pub thundering: bool,
+    /// The dimension has `water_evaporates` and drips lava from dripstone (the Nether).
+    pub ultrawarm: bool,
 }

 /// `ClientLevel.getMarkerParticleTarget`: only the selected main-hand item counts.
@@ -398,6 +502,15 @@ impl AnimateContext<'_> {
            ],
        ))
    }
+    /// `Level.getMaxLocalRawBrightness`: the brighter of block light and
+    /// sky light less the sky darkening.
+    fn max_local_raw_brightness(&self, p: [i32; 3]) -> i32 {
+        let light = self.world.light(p[0], p[1], p[2]);
+        i32::from(light & 15).max(i32::from(light >> 4) - self.sky_darken)
+    }
+    fn offset_of(&self, state: BlockStateId, p: [i32; 3]) -> [f64; 3] {
+        (self.model_offset)(state, p[0], p[2]).unwrap_or([0.0; 3])
+    }
    fn foliage(&self, p: [i32; 3]) -> u32 {
        let biome = self
            .world
@@ -453,7 +566,7 @@ fn do_animate_tick(
        return;
    }
    let state = ctx.state(pos);
-    block_animate_tick(tables, engine, ctx, state, pos);
+    block_animate_tick(tables, engine, ctx, state, pos, center);
    let facts = ctx.facts.get(state);
    if facts.fluid != Fluid::None {
        fluid_animate_tick(
@@ -609,6 +722,22 @@ fn beehive_drip(
    ];
    add(engine, T::DrippingHoney, p, [0.0; 3]);
 }
+/// `AmbientDesertBlockSoundsPlayer.shouldPlayDesertDryVegetationBlockSounds`:
+/// sand or terracotta two blocks deep.
+fn desert_dry_vegetation_sounds(
+    tables: &AnimateTables,
+    ctx: &AnimateContext,
+    below: [i32; 3],
+) -> bool {
+    let triggers = |p: [i32; 3]| {
+        tables
+            .desert_dry_vegetation_sounds
+            .get(ctx.state(p).0 as usize)
+            .copied()
+            .unwrap_or(false)
+    };
+    triggers(below) && triggers([below[0], below[1] - 1, below[2]])
+}
 /// `WaterFluid.animateTick` / `LavaFluid.animateTick`.
 fn fluid_animate_tick(
    engine: &mut ParticleEngine,
@@ -684,6 +813,7 @@ fn block_animate_tick(
    ctx: &AnimateContext,
    state: BlockStateId,
    pos: [i32; 3],
+    player: [i32; 3],
 ) {
    let (fx, fy, fz) = (f64::from(pos[0]), f64::from(pos[1]), f64::from(pos[2]));
    match tables.kind(state) {
@@ -1073,12 +1203,198 @@ fn block_animate_tick(
                }
            }
        }
+        Animate::FireflyBush => {
+            // FireflyBushBlock.animateTick: the idle sound on a quiet night
+            // under open sky, and fireflies in the dark within 5 blocks.
+            if next_int(engine.random(), 30) == 0
+                && ctx.firefly_bush_sounds
+                && (ctx.height_no_leaves)(pos) <= pos[1]
+            {
+                let name = "minecraft:block.firefly_bush.idle";
+                sound(engine, name, [fx, fy, fz], 1.0, 1.0);
+            }
+            if ctx.max_local_raw_brightness(pos) <= 13 {
+                let r = engine.random();
+                if r.next_double() <= 0.7 {
+                    let p = [
+                        fx + r.next_double() * 10.0 - 5.0,
+                        fy + r.next_double() * 5.0,
+                        fz + r.next_double() * 10.0 - 5.0,
+                    ];
+                    add(engine, T::Firefly, p, [0.0; 3]);
+                }
+            }
+        }
+        Animate::OpenEyeblossom => {
+            // EyeblossomBlock.animateTick: pale moss below.
+            if next_int(engine.random(), 700) == 0 {
+                let below = ctx.state([pos[0], pos[1] - 1, pos[2]]);
+                if ctx
+                    .registry
+                    .state(below)
+                    .is_some_and(|s| s.name == "minecraft:pale_moss_block")
+                {
+                    let name = "minecraft:block.eyeblossom.idle";
+                    sound(engine, name, [fx, fy, fz], 1.0, 1.0);
+                }
+            }
+        }
+        Animate::PaleHangingMoss => {
+            // HangingMossBlock.animateTick: under pale oak logs or leaves.
+            if next_int(engine.random(), 500) == 0 {
+                let above = ctx.state([pos[0], pos[1] + 1, pos[2]]);
+                let pale_leaves = ctx
+                    .registry
+                    .state(above)
+                    .is_some_and(|s| s.name == "minecraft:pale_oak_leaves");
+                if pale_leaves
+                    || tables
+                        .pale_oak_logs
+                        .get(above.0 as usize)
+                        .copied()
+                        .unwrap_or(false)
+                {
+                    let name = "minecraft:block.pale_hanging_moss.idle";
+                    sound(engine, name, [fx, fy, fz], 1.0, 1.0);
+                }
+            }
+        }
+        Animate::DeadBush => {
+            // AmbientDesertBlockSoundsPlayer.playAmbientDeadBushSounds.
+            if next_int(engine.random(), 130) == 0 {
+                let below = [pos[0], pos[1] - 1, pos[2]];
+                let state = ctx.state(below);
+                let red_sand = ctx
+                    .registry
+                    .state(state)
+                    .is_some_and(|s| s.name == "minecraft:red_sand");
+                let terracotta = tables
+                    .terracotta
+                    .get(state.0 as usize)
+                    .copied()
+                    .unwrap_or(false);
+                if (red_sand || terracotta) && next_int(engine.random(), 3) != 0 {
+                    return;
+                }
+                if desert_dry_vegetation_sounds(tables, ctx, below) {
+                    let name = "minecraft:block.deadbush.idle";
+                    sound(engine, name, [fx, fy, fz], 1.0, 1.0);
+                }
+            }
+        }
+        Animate::DryGrass => {
+            // AmbientDesertBlockSoundsPlayer.playAmbientDryGrassSounds:
+            // played at the player.
+            if next_int(engine.random(), 200) == 0
+                && desert_dry_vegetation_sounds(tables, ctx, [pos[0], pos[1] - 1, pos[2]])
+            {
+                let at = [
+                    f64::from(player[0]) + 0.5,
+                    f64::from(player[1]),
+                    f64::from(player[2]) + 0.5,
+                ];
+                sound(engine, "minecraft:block.dry_grass.ambient", at, 1.0, 1.0);
+            }
+        }
        Animate::EndPortal => {
            // EndPortalBlock.animateTick: one smoke particle above the surface.
            let r = engine.random();
            let p = [fx + r.next_double(), fy + 0.8, fz + r.next_double()];
            add(engine, T::Smoke, p, [0.0; 3]);
        }
+        Animate::Lever { facing, connected } => {
+            // LeverBlock.animateTick: a powered lever puffs red dust a quarter of the time.
+            if engine.random().next_float() < 0.25 {
+                // LeverBlock.makeParticle with scale 0.5.
+                let at = |base: f64, i: usize| {
+                    base + 0.5 + 0.1 * f64::from(-facing[i]) + 0.2 * f64::from(-connected[i])
+                };
+                let p = [at(fx, 0), at(fy, 1), at(fz, 2)];
+                engine.add(&ParticleOptions::dust([1.0, 0.0, 0.0], 0.5), p, [0.0; 3]);
+            }
+        }
+        Animate::Repeater { facing, delay } => {
+            // RepeaterBlock.animateTick: dust at one of the torches.
+            let r = engine.random();
+            let x = fx + 0.5 + (r.next_double() - 0.5) * 0.2;
+            let y = fy + 0.4 + (r.next_double() - 0.5) * 0.2;
+            let z = fz + 0.5 + (r.next_double() - 0.5) * 0.2;
+            let mut offset = -5.0f32;
+            if r.next_boolean() {
+                offset = (delay * 2 - 1) as f32;
+            }
+            offset /= 16.0;
+            let xo = f64::from(offset * facing[0] as f32);
+            let zo = f64::from(offset * facing[2] as f32);
+            redstone(engine, [x + xo, y, z + zo]);
+        }
+        Animate::PointedDripstone => dripstone_drip(tables, engine, ctx, state, pos),
+        Animate::WitherRose => {
+            // WitherRoseBlock.animateTick: smoke puffs at the centre of the shape.
+            let center = ctx.shape_y(pos).map_or([0.5; 2], |s| {
+                [(s.2[0] + s.2[1]) / 2.0, (s.2[2] + s.2[3]) / 2.0]
+            });
+            let offset = ctx.offset_of(state, pos);
+            let x = fx + center[0] + offset[0];
+            let z = fz + center[1] + offset[2];
+            for _ in 0..3 {
+                let r = engine.random();
+                if r.next_boolean() {
+                    let p = [
+                        x + r.next_double() / 5.0,
+                        fy + (0.5 - r.next_double()),
+                        z + r.next_double() / 5.0,
+                    ];
+                    add(engine, T::Smoke, p, [0.0; 3]);
+                }
+            }
+        }
+        Animate::EndGateway => {
+            // EndGatewayBlock.animateTick: portal particles, one for each visible face.
+            for _ in 0..(ctx.gateway_particles)(state, pos) {
+                let r = engine.random();
+                let mut p = [
+                    fx + r.next_double(),
+                    fy + r.next_double(),
+                    fz + r.next_double(),
+                ];
+                let mut v = [
+                    (r.next_double() - 0.5) * 0.5,
+                    (r.next_double() - 0.5) * 0.5,
+                    (r.next_double() - 0.5) * 0.5,
+                ];
+                let flip = next_int(r, 2) * 2 - 1;
+                if r.next_boolean() {
+                    p[2] = fz + 0.5 + 0.25 * f64::from(flip);
+                    v[2] = f64::from(r.next_float() * 2.0 * flip as f32);
+                } else {
+                    p[0] = fx + 0.5 + 0.25 * f64::from(flip);
+                    v[0] = f64::from(r.next_float() * 2.0 * flip as f32);
+                }
+                add(engine, T::Portal, p, v);
+            }
+        }
+        Animate::LightningRod(axis) => {
+            // LightningRodBlock.animateTick: in a thunderstorm, sparks along the
+            // topmost rod, more often as the game time within 200 ticks grows.
+            if ctx.thundering
+                && i64::from(next_int(engine.level_random(), 200)) <= ctx.world.game_time % 200
+                && pos[1]
+                    == ctx
+                        .world
+                        .world_surface(pos[0], pos[2], |id| ctx.facts.is_air(id))
+                        - 1
+            {
+                let mut sparks = Vec::new();
+                along_axis(engine.level_random(), axis, pos, (1, 2), |p, v| {
+                    sparks.push((p, v));
+                });
+                let options = ParticleOptions::simple(T::ElectricSpark);
+                for (p, v) in sparks {
+                    engine.add(&options, p, v);
+                }
+            }
+        }
        Animate::EnderChest => {
            for _ in 0..3 {
                let r = engine.random();
@@ -1382,6 +1698,68 @@ fn leaves_ambient_sound(
        }
    }
 }
+/// `PointedDripstoneBlock.animateTick`: a free-hanging stalactite tip drips the
+/// fluid above the root of its stalactite.
+fn dripstone_drip(
+    tables: &AnimateTables,
+    engine: &mut ParticleEngine,
+    ctx: &AnimateContext,
+    state: BlockStateId,
+    pos: [i32; 3],
+) {
+    let roll = engine.random().next_float();
+    if roll > 0.12 {
+        return;
+    }
+    // getFluidAboveStalactite: findRootBlock climbs at most ten blocks of
+    // stalactite and stops at the first block that is not pointed dripstone.
+    let mut root = None;
+    for step in 1..11 {
+        let p = [pos[0], pos[1] + step, pos[2]];
+        match tables
+            .dripstone
+            .get(ctx.state(p).0 as usize)
+            .copied()
+            .unwrap_or(0)
+        {
+            0 => {
+                root = Some(p);
+                break;
+            }
+            2 => {}
+            _ => return,
+        }
+    }
+    let Some(root) = root else {
+        return;
+    };
+    let above = ctx.facts.get(ctx.state([root[0], root[1] + 1, root[2]]));
+    // Mud above the root counts as a water source unless water evaporates here.
+    let (fluid, source) = if &*above.name == "minecraft:mud" && !ctx.ultrawarm {
+        (Fluid::Water, true)
+    } else {
+        (above.fluid, above.fluid_level >= 8 && !above.fluid_falling)
+    };
+    // canFillCauldron: only a water or lava source passes below a 2% roll.
+    if roll >= 0.02 && !(fluid != Fluid::None && source) {
+        return;
+    }
+    // getDripParticle: no fluid drips what the dimension's default says.
+    let lava = fluid == Fluid::Lava || (fluid == Fluid::None && ctx.ultrawarm);
+    let ty = if lava {
+        T::DrippingDripstoneLava
+    } else {
+        T::DrippingDripstoneWater
+    };
+    let offset = ctx.offset_of(state, pos);
+    // STALACTITE_DRIP_START_PIXEL is the tip's lowest point, 5/16.
+    let p = [
+        f64::from(pos[0]) + 0.5 + offset[0],
+        f64::from(pos[1]) + 0.3125 - 0.0625,
+        f64::from(pos[2]) + 0.5 + offset[2],
+    ];
+    add(engine, ty, p, [0.0; 3]);
+}
 /// `AmbientDesertBlockSoundsPlayer.shouldPlayAmbientSandSound`: sand in the
 /// surface column eight blocks away on all four sides.
 fn sand_sound_nearby(tables: &AnimateTables, ctx: &AnimateContext, pos: [i32; 3]) -> bool {
@@ -159,6 +159,8 @@ pub struct ArrowState {
    pub pickup: Pickup,
    /// `pickupItemStack`: what picking the arrow up gives.
    pub pickup_item: crate::items::ItemStack,
+    /// `AbstractArrow.firedFromWeapon`: the crossbow or bow it was shot from.
+    pub fired_from_weapon: Option<crate::items::ItemStack>,
    pub no_physics: bool,
    /// `AbstractArrow.getPierceLevel`.
    pub pierce: u8,
@@ -208,6 +210,7 @@ impl ArrowState {
            last_state: None,
            pickup: Pickup::Disallowed,
            pickup_item: crate::items::ItemStack::new("minecraft:arrow", 1),
+            fired_from_weapon: None,
            no_physics: false,
            pierce: 0,
            pierced: Vec::new(),
@@ -218,6 +218,8 @@ impl RenderAssets {
            sprites.insert(root, &format!("minecraft:block/destroy_stage_{stage}"))?;
        }
        sprites.finish();
+        // `finish` grows the buffer by doubling: keep only the bytes in use.
+        sprites.pixels.shrink_to_fit();
        Ok(Self {
            sprite_size: sprites.size,
            sprite_minimum_size: sprites.minimum_size,
@@ -234,3 +236,81 @@ impl RenderAssets {
        })
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::items::ConsumeEffect;
+
+    #[test]
+    fn always_edible_and_consume_effects_loaded() {
+        let root = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("../../.local/horizon-client/26.3");
+        if !root.join("items.json").exists() {
+            return;
+        }
+        let assets = crate::assets::Assets::load(&root).unwrap();
+        let facts = crate::blocks::BlockFacts::load(&root, assets.registry).unwrap();
+        let items = crate::items::Items::load(&root, assets.registry, &facts).unwrap();
+
+        let apple = items.get("minecraft:golden_apple").expect("golden apple");
+        assert!(apple.can_always_eat);
+        assert!(apple.food.is_some());
+        assert!(!apple.consumable.as_ref().unwrap().effects.is_empty());
+
+        let enchanted = items
+            .get("minecraft:enchanted_golden_apple")
+            .expect("enchanted golden apple");
+        assert!(enchanted.can_always_eat);
+        assert!(enchanted.food.is_some());
+        assert!(!enchanted.consumable.as_ref().unwrap().effects.is_empty());
+
+        let beef = items.get("minecraft:cooked_beef").expect("cooked beef");
+        assert!(!beef.can_always_eat);
+        assert!(beef.food.is_some());
+
+        // Consumables without food, their style and their remainders.
+        use horizon_world::consumable::UseAnimation;
+        let milk = items.get("minecraft:milk_bucket").expect("milk bucket");
+        let drink = milk.consumable.as_ref().unwrap();
+        assert!(milk.food.is_none());
+        assert_eq!(drink.effects, [ConsumeEffect::ClearAllEffects]);
+        assert_eq!((drink.ticks(), drink.animation), (32, UseAnimation::Drink));
+        assert_eq!(drink.sound, "minecraft:entity.generic.drink");
+        assert!(!drink.particles);
+        assert_eq!(milk.use_remainder.as_deref(), Some("minecraft:bucket"));
+        let honey = items.get("minecraft:honey_bottle").expect("honey bottle");
+        let sip = honey.consumable.as_ref().unwrap();
+        assert_eq!(sip.ticks(), 40);
+        assert_eq!(sip.sound, "minecraft:item.honey_bottle.drink");
+        assert_eq!(
+            sip.effects,
+            [ConsumeEffect::RemoveEffects(vec![
+                "minecraft:poison".into()
+            ])]
+        );
+        assert_eq!(
+            honey.use_remainder.as_deref(),
+            Some("minecraft:glass_bottle")
+        );
+        let kelp = items.get("minecraft:dried_kelp").unwrap();
+        let bite = kelp.consumable.as_ref().unwrap();
+        assert_eq!((bite.ticks(), bite.animation), (16, UseAnimation::Eat));
+        assert_eq!(bite.sound, "minecraft:entity.generic.eat");
+        assert!(bite.particles && kelp.use_remainder.is_none());
+        let chorus = items.get("minecraft:chorus_fruit").unwrap();
+        assert_eq!(
+            chorus.consumable.as_ref().unwrap().effects,
+            [ConsumeEffect::TeleportRandomly(
+                horizon_world::teleport_consume::TeleportConsume {
+                    diameter: 16.0,
+                    directional_particles: true,
+                }
+            )]
+        );
+        let chicken = items.get("minecraft:chicken").unwrap();
+        assert!(matches!(
+            chicken.consumable.as_ref().unwrap().effects[..],
+            [ConsumeEffect::ApplyEffects { probability, .. }] if probability == 0.3
+        ));
+    }
+}
@@ -3,24 +3,10 @@
 //! banners, and the loom rules of `LoomMenu` (selectable patterns, the
 //! six-layer limit and the result stack).
 use crate::{block_entity_render::DYES, items::ItemStack, items::Items};
-use horizon_world::nbt::Tag;
 use serde_json::Value;
 use std::{collections::HashMap, fs, path::Path, sync::Arc};

-/// `BannerPatternLayers.Layer`: a pattern id and the dye name it is painted in.
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct BannerLayer {
-    pub pattern: Arc<str>,
-    pub color: Arc<str>,
-}
-impl BannerLayer {
-    pub fn new(pattern: &str, color: &str) -> Self {
-        Self {
-            pattern: Arc::from(pattern),
-            color: Arc::from(color),
-        }
-    }
-}
+pub use horizon_items::banner_layer::{BannerLayer, layers_from_nbt, layers_to_nbt};

 /// Layers a loom may stack on a banner (`LoomMenu`'s `hasMaxPatterns`).
 pub const MAX_LAYERS: usize = 6;
@@ -224,44 +210,6 @@ pub fn has_max_layers(banner: &ItemStack) -> bool {
    layers(banner).len() >= MAX_LAYERS
 }

-/// The `banner_patterns` NBT list of layers.
-pub fn layers_to_nbt(layers: &[BannerLayer]) -> Tag {
-    Tag::List(
-        layers
-            .iter()
-            .map(|l| {
-                Tag::compound([
-                    ("pattern", Tag::String((&*l.pattern).into())),
-                    ("color", Tag::String((&*l.color).into())),
-                ])
-            })
-            .collect(),
-    )
-}
-pub fn layers_from_nbt(tag: Option<&Tag>) -> Vec<BannerLayer> {
-    let Some(Tag::List(list)) = tag else {
-        return Vec::new();
-    };
-    list.iter()
-        .filter_map(|e| {
-            let text = |k: &str| match e.get(k) {
-                Some(Tag::String(s)) => Some(s.to_string_lossy()),
-                _ => None,
-            };
-            let pattern = text("pattern")?;
-            let color = text("color")?;
-            Some(BannerLayer::new(
-                &if pattern.contains(':') {
-                    pattern
-                } else {
-                    format!("minecraft:{pattern}")
-                },
-                &color,
-            ))
-        })
-        .collect()
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -3,6 +3,7 @@
 //! the rain, nor through a blocked front, unless the hive is emptied in an
 //! emergency), honey for every bee coming home with nectar. The host (the game
 //! or the mob AI probe) loads and adds the bees through [`HiveHost`].
+pub use crate::chunk::block_entity::{Beehive, Occupant};
 use crate::mobs::{Mob, Species, bee};
 use horizon_core::random::{LegacyRandom, RandomSource};
 use horizon_world::nbt::{Compound, Tag};
@@ -38,20 +39,6 @@ const IGNORED_BEE_TAGS: [&str; 25] = [
    "UUID",
 ];

-/// `BeehiveBlockEntity`: the bees inside and the flower one of them knew.
-#[derive(Clone, Debug, Default, PartialEq)]
-pub struct Beehive {
-    pub bees: Vec<Occupant>,
-    pub flower: Option<[i32; 3]>,
-}
-/// `BeehiveBlockEntity.Occupant`: a bee's tag (with its `id`), its time in
-/// the hive and the time it stays at least.
-#[derive(Clone, Debug, PartialEq)]
-pub struct Occupant {
-    pub entity_data: Tag,
-    pub ticks_in_hive: i32,
-    pub min_ticks_in_hive: i32,
-}
 /// `BeehiveBlockEntity.BeeReleaseStatus`.
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum Release {
@@ -20,12 +20,68 @@ pub struct SpawnEntry {
    /// A `ConstantInt` count (sampling draws nothing).
    pub constant: bool,
 }
+/// A `natural_mob_spawns` / `spawn_overrides` entry list.
+pub fn parse_entries(list: &Value) -> Vec<SpawnEntry> {
+    list.as_array()
+        .into_iter()
+        .flatten()
+        .filter_map(|e| {
+            let count = &e["count"];
+            let (min, max, constant) = match count {
+                Value::Number(n) => {
+                    let n = n.as_u64().unwrap_or(1) as u32;
+                    (n, n, true)
+                }
+                c if c["type"].as_str() == Some("minecraft:constant") => {
+                    let n = c["value"].as_u64().unwrap_or(1) as u32;
+                    (n, n, true)
+                }
+                c => (
+                    c["min_inclusive"].as_u64().unwrap_or(1) as u32,
+                    c["max_inclusive"].as_u64().unwrap_or(1) as u32,
+                    false,
+                ),
+            };
+            Some(SpawnEntry {
+                entity: e["type"].as_str()?.to_owned(),
+                weight: e["weight"].as_u64().unwrap_or(1) as u32,
+                min,
+                max,
+                constant,
+            })
+        })
+        .collect()
+}
+/// `MobSpawnSettings.MobSpawnCost`.
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct SpawnCost {
+    pub energy_budget: f64,
+    pub charge: f64,
+}
+/// The `spawn_costs` of a `natural_mob_spawns` value.
+pub fn parse_costs(costs: &Value) -> HashMap<String, SpawnCost> {
+    costs
+        .as_object()
+        .into_iter()
+        .flatten()
+        .map(|(k, c)| {
+            (
+                k.clone(),
+                SpawnCost {
+                    energy_budget: c["energy_budget"].as_f64().unwrap_or(0.0),
+                    charge: c["charge"].as_f64().unwrap_or(0.0),
+                },
+            )
+        })
+        .collect()
+}
+
 #[derive(Clone, Debug)]
 pub struct BiomeInfo {
    /// `natural_mob_spawns` by category (creature, monster, ...).
    pub spawns: HashMap<String, Vec<SpawnEntry>>,
    /// `natural_mob_spawns` spawn costs by entity type.
-    pub spawn_costs: HashMap<String, crate::mobs::spawn_selection::SpawnCost>,
+    pub spawn_costs: HashMap<String, SpawnCost>,
    /// The `gameplay/creature_world_gen_spawn_probability` attribute.
    pub creature_probability: f32,
    /// The `gameplay/increased_fire_burnout` attribute (jungles, swamps, peaks,
@@ -66,6 +122,13 @@ impl BiomeInfo {
        }
        .height_adjusted(pos, sea_level)
    }
+    /// `Biome.getPrecipitationAt` in the Overworld (sea level 63): None
+    /// without precipitation, else whether it falls as snow
+    /// (`getHeightAdjustedTemperature` below 0.15).
+    pub fn snows_at(&self, x: i32, y: i32, z: i32) -> Option<bool> {
+        self.precipitation
+            .then(|| self.temperature_at(BlockPos::new(x, y, z), 63) < 0.15)
+    }
 }
 pub struct Biomes {
    pub list: Vec<BiomeInfo>,
@@ -143,12 +206,12 @@ impl Biomes {
            };
            let categories = &natural["spawns_by_category"];
            for (category, entries) in categories.as_object().into_iter().flatten() {
-                let list = crate::mobs::spawn_selection::parse_entries(entries);
+                let list = parse_entries(entries);
                spawns.insert(category.clone(), list);
            }
            list.push(BiomeInfo {
                spawns,
-                spawn_costs: crate::mobs::spawn_selection::parse_costs(&natural["spawn_costs"]),
+                spawn_costs: parse_costs(&natural["spawn_costs"]),
                creature_probability:
                    attributes["minecraft:gameplay/creature_world_gen_spawn_probability"]
                        .as_f64()
@@ -23,7 +23,7 @@
 //! Which states tick is a table by state id, built by the game from the block
 //! registry; whether a slot is made is decided when the slot is promoted at
 //! the start of the next tick, from the block state then.
-use crate::containers::BlockEntity;
+use crate::chunk::block_entity::BlockEntity;
 use crate::fast_hash::{FxHashMap, FxHashSet};
 use std::collections::HashMap;

@@ -35,6 +35,25 @@ pub fn op_warning(stack: &crate::items::ItemStack) -> bool {
    data(stack).is_some_and(|(id, _)| OP_ONLY.contains(&id.as_str()))
 }

+/// `SpawnEggItem.shouldPrintOpWarning` for a player with game master
+/// permission: a spawn egg carries data of an op-only entity type
+/// (`EntityTypes.OP_ONLY_CUSTOM_DATA`).
+pub fn spawn_egg_op_warning(stack: &crate::items::ItemStack) -> bool {
+    stack.item.ends_with("_spawn_egg")
+        && matches!(
+            stack
+                .data()
+                .and_then(|d| d.other("minecraft:entity_data"))
+                .and_then(|data| data.get("id")),
+            Some(Tag::String(id)) if matches!(
+                id.to_string_lossy().as_str(),
+                "minecraft:falling_block"
+                    | "minecraft:command_block_minecart"
+                    | "minecraft:spawner_minecart"
+            )
+        )
+}
+
 /// `Spawner.getSpawnEntityDisplayName` (`SpawnData.entity.id` of the item's
 /// data, which `ItemStack.addDetailsToTooltip` reads for spawners and trial
 /// spawners alike): the entity type a spawner item spawns.
@@ -5,7 +5,11 @@
 //! (`entity-models.json`); transforms, animation and textures follow each
 //! vanilla renderer. Faces are lit like the `entity` shader: the lightmap at
 //! the block plus `minecraft_mix_light` with the level's two diffuse lights.
-use crate::{hud::Rect, mesher::Vertex, world::World};
+use crate::{
+    hud::Rect,
+    mesher::{CULL_BACK, Vertex},
+    world::World,
+};
 use glam::{DVec3, Mat4, Quat, Vec3};
 use horizon_core::geometry::{
    Direction,
@@ -93,6 +97,16 @@ pub fn diffuse(normal: Vec3, lights: (Vec3, Vec3)) -> f32 {
 pub fn vertex_light(packed: u8) -> u32 {
    (u32::from(packed >> 4) * 16) | ((u32::from(packed & 15) * 16) << 8)
 }
+/// `ChestRenderer.xmasTextures`: `SpecialDates.isExtendedChristmas` (24 to 26
+/// December in the local time zone), read once when the renderer is created.
+fn extended_christmas() -> bool {
+    use chrono::Datelike;
+    static XMAS: std::sync::OnceLock<bool> = std::sync::OnceLock::new();
+    *XMAS.get_or_init(|| {
+        let now = chrono::Local::now();
+        now.month() == 12 && (24..=26).contains(&now.day())
+    })
+}
 fn pack_color(rgb: u32, alpha: u32, brightness: f32) -> u32 {
    let c = |shift: u32| (((rgb >> shift) & 255) as f32 * brightness) as u32;
    alpha << 24 | c(0) << 16 | c(8) << 8 | c(16)
@@ -938,6 +952,30 @@ impl BlockEntityRenderer {
        let lights = diffuse_lights(scene.nether);
        self.render_one(scene, pos, kind, base, packed, lights, false, false, out);
    }
+    /// `TheEndGatewayBlockEntity.shouldRenderFace` for each face of the gateway
+    /// at `pos`: the faces its portal is drawn on.
+    pub fn gateway_faces(
+        &self,
+        world: &World,
+        state: BlockStateId,
+        pos: [i32; 3],
+    ) -> Vec<Direction> {
+        Direction::ALL
+            .into_iter()
+            .filter(|&d| {
+                let [dx, dy, dz] = d.normal();
+                let neighbor = world.block(pos[0] + dx, pos[1] + dy, pos[2] + dz);
+                self.visibility.as_ref().is_none_or(|v| {
+                    v.lock()
+                        .map(|mut v| {
+                            v.should_render_face(state, neighbor, d, true)
+                                .unwrap_or(true)
+                        })
+                        .unwrap_or(true)
+                })
+            })
+            .collect()
+    }
    /// Whether this block state has a block-entity renderer here.
    pub fn renders(&self, state: u32) -> bool {
        !matches!(self.kind(state), Kind::None)
@@ -1145,11 +1183,25 @@ impl BlockEntityRenderer {
                }
            }
            Kind::Chest {
+                block,
                texture,
                part,
                y_rot,
                ..
            } => {
+                // ChestRenderer.getChestMaterial: normal and trapped chests use the christmas
+                // sprites on 24-26 December. Copper and ender chests keep theirs.
+                let texture = if matches!(block.as_str(), "chest" | "trapped_chest")
+                    && extended_christmas()
+                {
+                    match part {
+                        ChestPart::Single => "entity/chest/christmas",
+                        ChestPart::Left => "entity/chest/christmas_left",
+                        ChestPart::Right => "entity/chest/christmas_right",
+                    }
+                } else {
+                    *texture
+                };
                let model = match part {
                    ChestPart::Single => "chest",
                    ChestPart::Left => "double_chest_left",
@@ -1392,6 +1444,7 @@ impl BlockEntityRenderer {
                        m *= around(Mat4::from_rotation_y(turn * decay), pivot);
                    }
                }
+                let first = out.len();
                if let Some(paint) =
                    paint("entity/decorated_pot/decorated_pot_base", 0xFFFFFF, packed)
                {
@@ -1409,6 +1462,11 @@ impl BlockEntityRenderer {
                        draw_part(part, side, m, &none, paint, out);
                    }
                }
+                // `DecoratedPotRenderer` submits every part with `entitySolid`, which culls
+                // back faces: the flat `top` and `bottom` planes show one side each.
+                for vertex in &mut out[first..] {
+                    vertex.normal = CULL_BACK;
+                }
            }
            Kind::EndPortal => {
                // TheEndPortalRenderer.TRANSFORMATION: y from 6/16 to 12/16; only the
@@ -1439,22 +1497,8 @@ impl BlockEntityRenderer {
                        out,
                    );
                }
-                // AbstractEndPortalRenderer.extractRenderState: TheEndGatewayBlockEntity.shouldRenderFace.
-                let faces: Vec<Direction> = Direction::ALL
-                    .into_iter()
-                    .filter(|&d| {
-                        let [dx, dy, dz] = d.normal();
-                        let neighbor = scene.world.block(pos[0] + dx, pos[1] + dy, pos[2] + dz);
-                        self.visibility.as_ref().is_none_or(|v| {
-                            v.lock()
-                                .map(|mut v| {
-                                    v.should_render_face(BlockStateId(*state), neighbor, d, true)
-                                        .unwrap_or(true)
-                                })
-                                .unwrap_or(true)
-                        })
-                    })
-                    .collect();
+                // AbstractEndPortalRenderer.extractRenderState.
+                let faces = self.gateway_faces(scene.world, BlockStateId(*state), pos);
                portal_cube(base, &faces, END_GATEWAY_LAYER, out);
            }
            Kind::Conduit => {
@@ -2118,4 +2162,70 @@ mod tests {
        assert_eq!(first_line("\u{6771}", 3.0, &advance), "\u{6771}");
        assert_eq!(first_line("ab\ncd", 100.0, &advance), "ab");
    }
+    /// `DecoratedPotRenderer` submits every part with `RenderTypes.entitySolid`,
+    /// whose pipeline culls back faces. The pot's `top` and `bottom` are flat
+    /// boxes, so without that cull both sides of each plane are drawn and they
+    /// z-fight: the pot renders wrong.
+    #[test]
+    fn the_decorated_pot_culls_its_back_faces() {
+        let root = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("../../.local/horizon-client")
+            .join(horizon_core::VANILLA_VERSION);
+        if !root.join("entity-models.json").exists() {
+            return;
+        }
+        let assets = crate::assets::Assets::load(&root).unwrap();
+        let registry = assets.registry;
+        let renderer = BlockEntityRenderer::load(&root, registry).unwrap();
+        let state = registry.default_state("minecraft:decorated_pot").unwrap();
+        let sprites: HashMap<String, Rect> = [
+            "entity/decorated_pot/decorated_pot_base",
+            "entity/decorated_pot/decorated_pot_side",
+        ]
+        .into_iter()
+        .map(|name| {
+            (
+                name.to_owned(),
+                Rect {
+                    u0: 0.25,
+                    v0: 0.125,
+                    u1: 0.375,
+                    v1: 0.25,
+                    w: 16,
+                    h: 16,
+                },
+            )
+        })
+        .collect();
+        let world = World::new(BlockStateId(0), 1);
+        let scene = Scene {
+            camera: DVec3::ZERO,
+            orientation: Quat::IDENTITY,
+            anim: &|_| BlockAnim::default(),
+            texts: None,
+            partial: 0.5,
+            game_time: 0,
+            max_y: 320,
+            world: &world,
+            sprites: &sprites,
+            nether: false,
+            lid: &|_| 0.0,
+            sign: &|_| None,
+            banner: &|_| Vec::new(),
+            skull: &|_| None,
+            glyph: &|_| (None, 0.0),
+        };
+        let mut verts = Vec::new();
+        renderer.render_block(&scene, [0; 3], state.0, Mat4::IDENTITY, 0xff, &mut verts);
+        // Vanilla submits 28 quads for a plain pot, and the cull keeps them all.
+        assert_eq!(
+            verts.len() / 4,
+            28,
+            "the pot submits all of vanilla's quads"
+        );
+        assert!(
+            verts.iter().all(|v| v.normal == CULL_BACK),
+            "entitySolid culls the pot's back faces"
+        );
+    }
 }
@@ -2,12 +2,13 @@
 //! in vanilla, ported as tables), data-driven `minecraft:brewing` recipes from
 //! `data/minecraft/recipe/brewing`, potion colours and tooltips, and
 //! `BrewingStandBlockEntity.serverTick`.
+pub use crate::chunk::block_entity::BrewingStand;
 use crate::{
-    containers::Providers,
    items::{ItemStack, Items},
+    providers::Providers,
 };
 use serde_json::Value;
-use std::{collections::HashSet, fs, path::Path, sync::Arc};
+use std::{collections::HashSet, fs, path::Path};

 pub use horizon_client_core::potions::{
    BASE_POTION_COLOR, Category, EFFECTS, EffectDef, POTIONS, PotionDef, effect, namespaced,
@@ -190,18 +191,6 @@ impl Brewing {
    }
 }

-/// `BrewingStandBlockEntity` state. Slots: 0-2 bottles, 3 ingredient, 4 fuel.
-#[derive(Clone, Debug, Default)]
-pub struct BrewingStand {
-    pub items: [Option<ItemStack>; 5],
-    pub brew_time: i32,
-    pub total_brew_time: i32,
-    pub fuel: i32,
-    pub total_fuel: i32,
-    pub speed: f32,
-    pub ingredient: Option<Arc<str>>,
-    pub last_bottles: Option<[bool; 3]>,
-}
 /// What a brewing tick asks the world to do.
 #[derive(Clone, Debug, Default, PartialEq)]
 pub struct BrewTick {
@@ -772,6 +772,27 @@ pub fn bob_matrix(state: &BobState, damage_tilt_strength: f64, bob_view_option:
    pose
 }

+/// The spinning effect `GameRenderer.renderLevel` multiplies into the level's
+/// projection after the bob: a skew about a tilted axis, from a portal's or
+/// Nausea's intensity (already scaled by Distortion Effects) and the angle in
+/// degrees. The first-person hand keeps its own projection without it.
+pub fn spinning_effect_matrix(intensity: f32, angle_degrees: f32) -> glam::Mat4 {
+    if intensity <= 0.0 {
+        return glam::Mat4::IDENTITY;
+    }
+    let mut skew = 5.0 / (intensity * intensity + 5.0) - intensity * 0.04;
+    skew *= skew;
+    let axis = glam::Vec3::new(
+        0.0,
+        std::f32::consts::SQRT_2 / 2.0,
+        std::f32::consts::SQRT_2 / 2.0,
+    );
+    let angle = angle_degrees * DEG_TO_RAD;
+    glam::Mat4::from_axis_angle(axis, angle)
+        * glam::Mat4::from_scale(glam::Vec3::new(1.0 / skew, 1.0, 1.0))
+        * glam::Mat4::from_axis_angle(axis, -angle)
+}
+
 #[cfg(test)]
 mod tests {
    #[test]
@@ -556,26 +556,34 @@ impl Chat {
    pub fn hover_at(&self, font: &crate::font::Font, height: i32, x: f64, y: f64) -> Option<Text> {
        self.style_at(font, height, x, y)?.hover.map(|h| *h)
    }
-    /// ChatComponent.getClickedComponentStyleAt.
-    fn style_at(
-        &self,
-        font: &crate::font::Font,
-        height: i32,
-        x: f64,
-        y: f64,
-    ) -> Option<crate::text::Style> {
+    /// The wrapped line under a GUI-space cursor while chat is focused, and
+    /// the cursor's x within it (the text starts at 0).
+    fn line_at(&self, height: i32, x: f64, y: f64) -> Option<(&Line, f64)> {
        let scale = self.options.scale as f32;
-        let mut x = x / f64::from(scale) - 4.0;
+        let x = x / f64::from(scale) - 4.0;
        let bottom = hud_layout::floor((height - 40) as f32 / scale);
        let from_bottom = f64::from(bottom) - y / f64::from(scale);
-        if x < 0.0 || x >= f64::from(self.max_width()) || from_bottom <= 0.0 {
+        if x >= f64::from(self.max_width()) || from_bottom <= 0.0 {
            return None;
        }
        let row = (from_bottom / f64::from(self.options.line_height())).ceil() as usize - 1;
        if row >= self.lines_per_page(true) {
            return None;
        }
-        let line = self.lines.get(self.scroll + row)?;
+        Some((self.lines.get(self.scroll + row)?, x))
+    }
+    /// ChatComponent.getClickedComponentStyleAt.
+    pub fn style_at(
+        &self,
+        font: &crate::font::Font,
+        height: i32,
+        x: f64,
+        y: f64,
+    ) -> Option<crate::text::Style> {
+        let (line, mut x) = self.line_at(height, x, y)?;
+        if x < 0.0 {
+            return None;
+        }
        let content = line.content.resolve_legacy();
        for (c, style) in content.chars() {
            x -= f64::from(font.advance(c, style));
@@ -585,6 +593,13 @@ impl Chat {
        }
        None
    }
+    /// Whether the cursor is on a line's indicator bar while chat is focused
+    /// (`DrawingFocusedGraphicsAccess.handleTag`), whose tooltip is the
+    /// message tag's text.
+    pub fn indicator_at(&self, height: i32, x: f64, y: f64) -> bool {
+        self.line_at(height, x, y)
+            .is_some_and(|(line, x)| line.indicator.is_some() && (-4.0..-2.0).contains(&x))
+    }
    /// Plain text of the newest messages (for tests and the control socket).
    pub fn recent_lines(&self, n: usize) -> Vec<String> {
        self.messages
@@ -6,6 +6,8 @@ use horizon_world::nbt::{Compound, Tag};
 use horizon_world::registry::BlockStateId;
 use std::sync::{Arc, OnceLock};

+pub mod block_entity;
+
 pub const MIN_Y: i32 = -64;
 pub const HEIGHT: i32 = 384;
 pub const SECTIONS: usize = (HEIGHT / 16) as usize;
@@ -149,7 +151,7 @@ pub struct Chunk {
    /// Newly generated (not loaded from a save): eligible for generation-time spawns.
    pub fresh: bool,
    /// Block entities read from a save, moved into the world on arrival.
-    pub block_entities: Vec<((i32, i32, i32), crate::containers::BlockEntity)>,
+    pub block_entities: Vec<((i32, i32, i32), block_entity::BlockEntity)>,
    /// `CustomName` of the container block entities (shown as the screen title).
    pub block_names: Vec<((i32, i32, i32), String)>,
    /// Generation postprocessing marks (ProtoChunk.postProcessing) as world
@@ -0,0 +1,409 @@
+//! Block entity data: what a chunk stores for its block entities (`BlockEntity`
+//! and its payloads). Plain data, as vanilla's block entities are world data;
+//! their behaviour lives with the features that use them (`containers`,
+//! `brewing`, `signs`, ...), which re-export these types under their old paths.
+use horizon_client_core::{text::Text, who::Who};
+use horizon_items::{banner_layer::BannerLayer, items::ItemStack};
+use horizon_world::{
+    level::sculk::SculkSpreader,
+    nbt::{Compound, Tag},
+};
+use std::{collections::HashMap, sync::Arc};
+
+/// An entity's UUID as its four ints (`UUIDUtil.CODEC`).
+pub type Uuid = [i32; 4];
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum FurnaceKind {
+    Furnace,
+    BlastFurnace,
+    Smoker,
+}
+#[derive(Clone, Debug)]
+pub struct Furnace {
+    pub kind: FurnaceKind,
+    /// input, fuel, result
+    pub items: [Option<ItemStack>; 3],
+    pub lit_remaining: i32,
+    pub lit_total: i32,
+    pub cooking_timer: i32,
+    pub cooking_total: i32,
+    pub speed: f32,
+    /// `AbstractFurnaceBlockEntity.recipesUsed`: how many of each recipe this furnace has
+    /// made since a player last took from its output. The experience is owed per recipe
+    /// rather than per item, and a save keeps it as the `RecipesUsed` compound.
+    pub recipes_used: HashMap<String, u32>,
+}
+#[derive(Clone, Debug)]
+pub enum BlockEntity {
+    Chest(Vec<Option<ItemStack>>),
+    Furnace(Furnace),
+    Brewing(Box<BrewingStand>),
+    /// Signs and hanging signs (`SignBlockEntity`).
+    Sign(SignData),
+    /// `JukeboxBlockEntity`: the record and its `JukeboxSongPlayer`.
+    Jukebox(Jukebox),
+    /// `BeaconBlockEntity`.
+    Beacon(Box<Beacon>),
+    /// `LecternBlockEntity`: the book and the open page.
+    Lectern(Lectern),
+    /// Sculk sensors, shriekers and catalysts (`crate::sculk`).
+    Sculk(Box<SculkEntity>),
+    /// `CreakingHeartBlockEntity`: its protector and the hurt emitter.
+    CreakingHeart(Box<CreakingHeart>),
+    /// `BannerBlockEntity`: the pattern layers.
+    Banner(Banner),
+    /// `CrafterBlockEntity`.
+    Crafter(Crafter),
+    /// `SpawnerBlockEntity` (`crate::mobs::spawner`).
+    Spawner(Box<Spawner>),
+    /// `TrialSpawnerBlockEntity` (`crate::mobs::trial_spawner`).
+    TrialSpawner(Box<TrialSpawner>),
+    /// `VaultBlockEntity` (`crate::vault`).
+    Vault(Box<Vault>),
+    /// `BeehiveBlockEntity` of beehives and bee nests (`crate::beehive`).
+    Beehive(Box<Beehive>),
+    /// `CommandBlockEntity` of the three command blocks (`crate::command_block`).
+    CommandBlock(Box<CommandBlock>),
+    /// `CampfireBlockEntity` of campfires and soul campfires.
+    Campfire(Box<Campfire>),
+    /// `SkullBlockEntity` of every skull and head block.
+    Skull(Skull),
+    /// `TheEndGatewayBlockEntity`: its age and configured destination.
+    EndGateway(EndGateway),
+    /// `DaylightDetectorBlockEntity`: no data, only the ticker
+    /// (`DaylightDetectorBlock.tickEntity`).
+    DaylightDetector,
+    /// `ChiseledBookShelfBlockEntity`: a `Container` of six one-book slots.
+    ChiseledBookshelf(Box<ChiseledBookshelf>),
+}
+/// `ChiseledBookShelfBlockEntity`: six slots and `lastInteractedSlot`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct ChiseledBookshelf {
+    pub items: [Option<ItemStack>; 6],
+    pub last_slot: i32,
+}
+impl Default for ChiseledBookshelf {
+    fn default() -> Self {
+        Self {
+            items: Default::default(),
+            last_slot: -1,
+        }
+    }
+}
+/// `TheEndGatewayBlockEntity`.
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
+pub struct EndGateway {
+    pub age: i64,
+    pub exit_portal: Option<[i32; 3]>,
+    pub exact_teleport: bool,
+}
+/// `CampfireBlockEntity`: four cooking slots, each with its
+/// `cookingProgress` and `cookingTime` (the recipe's).
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct Campfire {
+    pub items: [Option<ItemStack>; 4],
+    pub progress: [i32; 4],
+    pub total: [i32; 4],
+}
+/// `SkullBlockEntity`: the player profile the head shows (kept as loaded:
+/// a compound, or a string when it names a player only), the note block
+/// sound and `custom_name`.
+#[derive(Clone, Debug, Default)]
+pub struct Skull {
+    pub profile: Option<horizon_world::nbt::Tag>,
+    pub note_block_sound: Option<String>,
+    pub custom_name: Option<horizon_world::nbt::Tag>,
+    /// What `profile` draws, read from it once rather than every frame.
+    pub skin: Option<SkullSkin>,
+}
+/// `SkullBlockRenderer.getPlayerSkin` of a head's profile: its skin's URL
+/// with the `skins/<sha1>` sprite it downloads to, and the
+/// `DefaultPlayerSkin` drawn until that sprite is there (steve for a
+/// profile with no id).
+#[derive(Clone, Debug)]
+pub struct SkullSkin {
+    pub download: Option<(String, String)>,
+    /// `ResolvableProfile.nameOrId` when the profile is `Dynamic` (a name or
+    /// an id only): the key `skins::Resolver` resolves it by.
+    pub dynamic: Option<NameOrId>,
+    pub fallback: &'static str,
+}
+/// `Either<String, UUID>`: the key a `Dynamic` `ResolvableProfile` resolves
+/// by (`ResolvableProfile.nameOrId`).
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
+pub enum NameOrId {
+    Name(String),
+    Id(u128),
+}
+/// `CrafterBlockEntity`: nine slots that can be disabled, the powered flag
+/// and the ticks left in the crafting animation.
+#[derive(Clone, Debug, Default)]
+pub struct Crafter {
+    pub items: [Option<ItemStack>; 9],
+    pub disabled: [bool; 9],
+    pub triggered: bool,
+    pub crafting_ticks: i32,
+    /// The block state's `triggered` when last ticked (not saved): the block
+    /// entity flag follows it only when it changes (`CrafterBlock.neighborChanged`).
+    pub state_triggered: Option<bool>,
+}
+#[derive(Clone, Debug, Default)]
+pub struct Banner {
+    pub layers: Vec<BannerLayer>,
+    pub name: Option<String>,
+    /// Components not consumed by BannerBlockEntity's implicit fields.
+    pub components: horizon_world::nbt::Compound,
+}
+/// `CreakingHeartBlockEntity` (the logic is in `game/creaking.rs`).
+#[derive(Clone, Debug, Default)]
+pub struct CreakingHeart {
+    /// The protector: its entity id once resolved, and its UUID (the saved form).
+    pub creaking: Option<(Option<u32>, [i32; 4])>,
+    pub ticks_existed: i64,
+    pub ticker: i32,
+    /// Ticks left of the hurt effect (`emitter`) and where it heads.
+    pub emitter: i32,
+    pub emitter_target: Option<[f64; 3]>,
+    pub output_signal: i32,
+}
+#[derive(Clone, Debug, Default)]
+pub struct Lectern {
+    pub book: Option<ItemStack>,
+    pub page: i32,
+}
+#[derive(Clone, Debug, Default)]
+pub struct Beacon {
+    pub levels: i32,
+    /// Effect ids (`minecraft:speed`).
+    pub primary: Option<String>,
+    pub secondary: Option<String>,
+    /// Beam sections (RGB colour, height) and the ones being rebuilt.
+    pub sections: Vec<(u32, i32)>,
+    pub checking: Vec<(u32, i32)>,
+    pub last_check_y: i32,
+}
+#[derive(Clone, Debug, Default)]
+pub struct Jukebox {
+    pub record: Option<ItemStack>,
+    /// `ticks_since_song_started`, while a song plays.
+    pub ticks: i64,
+    pub playing: bool,
+}
+/// `BrewingStandBlockEntity` state. Slots: 0-2 bottles, 3 ingredient, 4 fuel.
+#[derive(Clone, Debug, Default)]
+pub struct BrewingStand {
+    pub items: [Option<ItemStack>; 5],
+    pub brew_time: i32,
+    pub total_brew_time: i32,
+    pub fuel: i32,
+    pub total_fuel: i32,
+    pub speed: f32,
+    pub ingredient: Option<Arc<str>>,
+    pub last_bottles: Option<[bool; 3]>,
+}
+/// One sign side (`SignText`).
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct SignText {
+    pub lines: [String; 4],
+    /// `DyeColor` id.
+    pub color: u8,
+    pub glowing: bool,
+}
+/// `SignBlockEntity` / `HangingSignBlockEntity` data.
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
+pub struct SignData {
+    pub hanging: bool,
+    pub front: SignText,
+    pub back: SignText,
+    pub waxed: bool,
+}
+/// `VibrationInfo`.
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct Info {
+    pub event: &'static str,
+    pub distance: f32,
+    pub pos: [f64; 3],
+    pub source: Option<Who>,
+    pub owner: Option<Who>,
+}
+/// `VibrationSelector`: the closest, then highest-frequency candidate of a tick.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct Selector {
+    pub(crate) current: Option<(Info, i64)>,
+}
+/// `VibrationSystem.Data`.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct Data {
+    pub current: Option<Info>,
+    pub travel: i32,
+    pub selector: Selector,
+}
+/// Which sculk block entity this is.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum SculkKind {
+    Sensor,
+    Calibrated,
+    Shrieker,
+    Catalyst,
+}
+/// `SculkSensorBlockEntity`, `CalibratedSculkSensorBlockEntity`,
+/// `SculkShriekerBlockEntity` and `SculkCatalystBlockEntity`.
+#[derive(Clone, Debug)]
+pub struct SculkEntity {
+    pub kind: SculkKind,
+    pub vibration: Data,
+    /// `last_vibration_frequency` (sensors).
+    pub last_frequency: i32,
+    /// `warning_level` (shriekers).
+    pub warning_level: i32,
+    /// The catalyst's charge cursors.
+    pub spreader: SculkSpreader,
+}
+/// `SpawnData.CustomSpawnRules`: the block and sky light the spawn block
+/// must have (inclusive ranges within 0..=15).
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct CustomSpawnRules {
+    pub block: (i32, i32),
+    pub sky: (i32, i32),
+}
+/// `SpawnData`: the entity to spawn, optional light rules and an equipment
+/// table (kept as loaded).
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct SpawnData {
+    pub entity: Compound,
+    pub custom_spawn_rules: Option<CustomSpawnRules>,
+    pub equipment: Option<Tag>,
+}
+/// Which `SpawnData` is next: one of the potentials (the same object in
+/// vanilla, so changing it changes the potential) or its own.
+#[derive(Clone, Debug, PartialEq)]
+pub(crate) enum Next {
+    Potential(usize),
+    Own(SpawnData),
+}
+/// `BaseSpawner`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct Spawner {
+    pub spawn_delay: i32,
+    /// `SpawnPotentials`: data and weight.
+    pub potentials: Vec<(SpawnData, i32)>,
+    pub(crate) next: Option<Next>,
+    pub min_spawn_delay: i32,
+    pub max_spawn_delay: i32,
+    pub spawn_count: i32,
+    pub max_nearby_entities: i32,
+    pub required_player_range: i32,
+    pub spawn_range: i32,
+    /// The client copy's delay (`spawnDelay` on the client level), which
+    /// speeds the spin up as the next spawn nears.
+    pub client_delay: i32,
+    pub spin: f64,
+    pub o_spin: f64,
+}
+/// `TrialSpawnerConfig`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct TrialConfig {
+    pub spawn_range: i32,
+    pub total_mobs: f32,
+    pub simultaneous_mobs: f32,
+    pub total_mobs_added_per_player: f32,
+    pub simultaneous_mobs_added_per_player: f32,
+    pub ticks_between_spawn: i32,
+    pub spawn_potentials: Vec<(SpawnData, i32)>,
+    pub loot_tables_to_eject: Vec<(String, i32)>,
+    pub items_to_drop_when_ominous: String,
+}
+/// A `Holder<TrialSpawnerConfig>` as saved: a registry id
+/// (`minecraft:trial_chamber/breeze/normal`) or an inline config.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct ConfigSlot {
+    /// The value as loaded, written back as is; None for the default.
+    pub saved: Option<Tag>,
+    pub config: TrialConfig,
+}
+/// `TrialSpawner` with its `TrialSpawnerStateData`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct TrialSpawner {
+    pub normal: ConfigSlot,
+    pub ominous: ConfigSlot,
+    pub target_cooldown_length: i32,
+    pub required_player_range: i32,
+    pub detected_players: Vec<Uuid>,
+    pub current_mobs: Vec<Uuid>,
+    pub cooldown_ends_at: i64,
+    pub next_mob_spawns_at: i64,
+    pub total_mobs_spawned: i32,
+    pub next_spawn_data: Option<SpawnData>,
+    pub ejecting_loot_table: Option<String>,
+    /// `isOminous`, set from the block on every server tick.
+    pub is_ominous: bool,
+    /// The server's display entity exists (`getOrCreateDisplayEntity`): it is
+    /// made once per loaded block entity and kept.
+    pub has_display: bool,
+    pub spin: f64,
+    pub o_spin: f64,
+    /// `getDispensingItems`, kept once rolled (not saved): the ominous items
+    /// and their weights (the rolled counts).
+    pub dispensing: Option<Vec<ItemStack>>,
+}
+/// `VaultConfig`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct VaultConfig {
+    pub loot_table: String,
+    pub activation_range: f64,
+    pub deactivation_range: f64,
+    /// None when the config has no key (`ItemStack.EMPTY`): the vault never opens.
+    pub key_item: Option<ItemStack>,
+    pub override_loot_table_to_display: Option<String>,
+}
+/// `VaultBlockEntity`: its config, server data and shared data.
+#[derive(Clone, Debug, PartialEq)]
+pub struct Vault {
+    pub config: VaultConfig,
+    /// `VaultServerData`, oldest rewarded player first.
+    pub rewarded_players: Vec<Uuid>,
+    pub state_updating_resumes_at: i64,
+    /// Popped from the end.
+    pub items_to_eject: Vec<ItemStack>,
+    pub total_ejections_needed: i32,
+    pub last_insert_fail_timestamp: i64,
+    /// `VaultSharedData`.
+    pub display_item: Option<ItemStack>,
+    pub connected_players: Vec<Uuid>,
+    pub connected_particles_range: f64,
+    /// The shared data changed since the last tick sent it.
+    pub shared_dirty: bool,
+    /// `VaultClientData`: the display item's spin and the previous tick's, in degrees.
+    pub spin: f32,
+    pub o_spin: f32,
+}
+/// `BeehiveBlockEntity`: the bees inside and the flower one of them knew.
+#[derive(Clone, Debug, Default, PartialEq)]
+pub struct Beehive {
+    pub bees: Vec<Occupant>,
+    pub flower: Option<[i32; 3]>,
+}
+/// `BeehiveBlockEntity.Occupant`: a bee's tag (with its `id`), its time in
+/// the hive and the time it stays at least.
+#[derive(Clone, Debug, PartialEq)]
+pub struct Occupant {
+    pub entity_data: Tag,
+    pub ticks_in_hive: i32,
+    pub min_ticks_in_hive: i32,
+}
+#[derive(Clone, Debug, PartialEq)]
+pub struct CommandBlock {
+    pub command: String,
+    pub success_count: i32,
+    /// `CustomName` as saved (a text component).
+    pub custom_name: Option<Tag>,
+    pub track_output: bool,
+    pub last_output: Option<Text>,
+    pub update_last_execution: bool,
+    /// The game time of the last run, -1 for none.
+    pub last_execution: i64,
+    pub powered: bool,
+    pub auto: bool,
+    pub condition_met: bool,
+}
@@ -1,8 +1,10 @@
 //! `CommandBlockEntity` with its `BaseCommandBlock`: the command, the success
 //! count comparators read, the output it keeps, and the powered, automatic
 //! and condition flags `CommandBlock.tick` runs on.
-use crate::{
-    save::{number, text},
+pub use crate::chunk::block_entity::CommandBlock;
+use horizon_client_core::{
+    nbt_value::{number, text},
+    scoreboard,
    text::Text,
 };
 use horizon_world::nbt::Tag;
@@ -76,22 +78,6 @@ pub fn automatic_block(name: &str) -> bool {
    name == "minecraft:chain_command_block"
 }

-#[derive(Clone, Debug, PartialEq)]
-pub struct CommandBlock {
-    pub command: String,
-    pub success_count: i32,
-    /// `CustomName` as saved (a text component).
-    pub custom_name: Option<Tag>,
-    pub track_output: bool,
-    pub last_output: Option<Text>,
-    pub update_last_execution: bool,
-    /// The game time of the last run, -1 for none.
-    pub last_execution: i64,
-    pub powered: bool,
-    pub auto: bool,
-    pub condition_met: bool,
-}
-
 impl Default for CommandBlock {
    fn default() -> Self {
        Self {
@@ -123,7 +109,7 @@ impl CommandBlock {
            last_output: track_output
                .then(|| tag.get("LastOutput"))
                .flatten()
-                .map(|t| crate::scoreboard::comp_text(&crate::scoreboard::tag_to_json(t))),
+                .map(|t| scoreboard::comp_text(&scoreboard::tag_to_json(t))),
            update_last_execution,
            last_execution: if update_last_execution {
                number(tag.get("LastExecution")).unwrap_or(-1)
@@ -179,7 +165,7 @@ impl CommandBlock {
    pub fn name(&self) -> Text {
        self.custom_name.as_ref().map_or_else(
            || Text::literal("@"),
-            |t| crate::scoreboard::comp_text(&crate::scoreboard::tag_to_json(t)),
+            |t| scoreboard::comp_text(&scoreboard::tag_to_json(t)),
        )
    }
 }
@@ -63,13 +63,24 @@ impl Confirm {
        atlas: &HudAtlas,
        cursor: (f32, f32),
        labels: [&Text; 2],
+    ) {
+        self.draw_active(batch, atlas, cursor, labels, true);
+    }
+    /// `draw` with the buttons greyed out while `setDelay` runs (`active` false).
+    pub fn draw_active(
+        &self,
+        batch: &mut HudBatch,
+        atlas: &HudAtlas,
+        cursor: (f32, f32),
+        labels: [&Text; 2],
+        active: bool,
    ) {
        for (line, x, y) in &self.lines {
            batch.text_styled(atlas, line, *x, *y, u32::MAX, true);
        }
        for ((bx, by), label) in self.buttons.into_iter().zip(labels) {
-            let hover = ui::hovered(cursor, bx, by, 150.0, 20.0);
-            ui::button(batch, atlas, bx, by, 150.0, 20.0, label, true, hover);
+            let hover = active && ui::hovered(cursor, bx, by, 150.0, 20.0);
+            ui::button(batch, atlas, bx, by, 150.0, 20.0, label, active, hover);
        }
    }
 }
@@ -1,19 +1,13 @@
 //! Container block entities: chests/barrels (27 slots) and the three furnace
 //! kinds, ticking as `AbstractFurnaceBlockEntity.serverTick` with fuel times
 //! from the data-driven `context_int_provider`/`context_float_provider` files.
-use crate::{
-    crafting::Recipes,
-    items::{ItemStack, Items},
+pub use crate::chunk::block_entity::{
+    Banner, Beacon, BlockEntity, Campfire, ChiseledBookshelf, Crafter, CreakingHeart, EndGateway,
+    Furnace, FurnaceKind, Jukebox, Lectern, Skull, SkullSkin,
 };
-use serde_json::Value;
-use std::{collections::HashMap, fs, path::Path, sync::Arc};
+use crate::items::ItemStack;
+use std::collections::HashMap;

-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum FurnaceKind {
-    Furnace,
-    BlastFurnace,
-    Smoker,
-}
 impl FurnaceKind {
    pub fn recipe_type(self) -> &'static str {
        match self {
@@ -34,21 +28,6 @@ impl FurnaceKind {
        }
    }
 }
-#[derive(Clone, Debug)]
-pub struct Furnace {
-    pub kind: FurnaceKind,
-    /// input, fuel, result
-    pub items: [Option<ItemStack>; 3],
-    pub lit_remaining: i32,
-    pub lit_total: i32,
-    pub cooking_timer: i32,
-    pub cooking_total: i32,
-    pub speed: f32,
-    /// `AbstractFurnaceBlockEntity.recipesUsed`: how many of each recipe this furnace has
-    /// made since a player last took from its output. The experience is owed per recipe
-    /// rather than per item, and a save keeps it as the `RecipesUsed` compound.
-    pub recipes_used: HashMap<String, u32>,
-}
 /// The key `recipes_used` keeps a recipe under: its full id, as vanilla's `ResourceKey<Recipe>`
 /// writes it in `RecipesUsed`. Horizon's own recipe ids are file names without the namespace, so
 /// keeping both forms would write a key twice, and vanilla refuses such a furnace
@@ -63,78 +42,6 @@ pub fn recipe_used_key(id: &str) -> String {
 /// A hopper's slots: the only plain container with five.
 pub const HOPPER_SLOTS: usize = 5;

-#[derive(Clone, Debug)]
-pub enum BlockEntity {
-    Chest(Vec<Option<ItemStack>>),
-    Furnace(Furnace),
-    Brewing(Box<crate::brewing::BrewingStand>),
-    /// Signs and hanging signs (`SignBlockEntity`).
-    Sign(crate::signs::SignData),
-    /// `JukeboxBlockEntity`: the record and its `JukeboxSongPlayer`.
-    Jukebox(Jukebox),
-    /// `BeaconBlockEntity`.
-    Beacon(Box<Beacon>),
-    /// `LecternBlockEntity`: the book and the open page.
-    Lectern(Lectern),
-    /// Sculk sensors, shriekers and catalysts (`crate::sculk`).
-    Sculk(Box<crate::sculk::SculkEntity>),
-    /// `CreakingHeartBlockEntity`: its protector and the hurt emitter.
-    CreakingHeart(Box<CreakingHeart>),
-    /// `BannerBlockEntity`: the pattern layers.
-    Banner(Banner),
-    /// `CrafterBlockEntity`.
-    Crafter(Crafter),
-    /// `SpawnerBlockEntity` (`crate::mobs::spawner`).
-    Spawner(Box<crate::mobs::spawner::Spawner>),
-    /// `TrialSpawnerBlockEntity` (`crate::mobs::trial_spawner`).
-    TrialSpawner(Box<crate::mobs::trial_spawner::TrialSpawner>),
-    /// `VaultBlockEntity` (`crate::vault`).
-    Vault(Box<crate::vault::Vault>),
-    /// `BeehiveBlockEntity` of beehives and bee nests (`crate::beehive`).
-    Beehive(Box<crate::beehive::Beehive>),
-    /// `CommandBlockEntity` of the three command blocks (`crate::command_block`).
-    CommandBlock(Box<crate::command_block::CommandBlock>),
-    /// `CampfireBlockEntity` of campfires and soul campfires.
-    Campfire(Box<Campfire>),
-    /// `SkullBlockEntity` of every skull and head block.
-    Skull(Skull),
-    /// `TheEndGatewayBlockEntity`: its age and configured destination.
-    EndGateway(EndGateway),
-    /// `DaylightDetectorBlockEntity`: no data, only the ticker
-    /// (`DaylightDetectorBlock.tickEntity`).
-    DaylightDetector,
-    /// `ChiseledBookShelfBlockEntity`: a `Container` of six one-book slots.
-    ChiseledBookshelf(Box<ChiseledBookshelf>),
-}
-/// `ChiseledBookShelfBlockEntity`: six slots and `lastInteractedSlot`.
-#[derive(Clone, Debug, PartialEq)]
-pub struct ChiseledBookshelf {
-    pub items: [Option<ItemStack>; 6],
-    pub last_slot: i32,
-}
-impl Default for ChiseledBookshelf {
-    fn default() -> Self {
-        Self {
-            items: Default::default(),
-            last_slot: -1,
-        }
-    }
-}
-/// `TheEndGatewayBlockEntity`.
-#[derive(Clone, Debug, Default, PartialEq, Eq)]
-pub struct EndGateway {
-    pub age: i64,
-    pub exit_portal: Option<[i32; 3]>,
-    pub exact_teleport: bool,
-}
-/// `CampfireBlockEntity`: four cooking slots, each with its
-/// `cookingProgress` and `cookingTime` (the recipe's).
-#[derive(Clone, Debug, Default, PartialEq)]
-pub struct Campfire {
-    pub items: [Option<ItemStack>; 4],
-    pub progress: [i32; 4],
-    pub total: [i32; 4],
-}
 impl Campfire {
    /// `placeFood`'s slot: the first empty one, given the item's
    /// `campfire_cooking` time; it takes one item of `held`.
@@ -182,17 +89,6 @@ impl Campfire {
        changed
    }
 }
-/// `SkullBlockEntity`: the player profile the head shows (kept as loaded:
-/// a compound, or a string when it names a player only), the note block
-/// sound and `custom_name`.
-#[derive(Clone, Debug, Default)]
-pub struct Skull {
-    pub profile: Option<horizon_world::nbt::Tag>,
-    pub note_block_sound: Option<String>,
-    pub custom_name: Option<horizon_world::nbt::Tag>,
-    /// What `profile` draws, read from it once rather than every frame.
-    pub skin: Option<SkullSkin>,
-}
 impl Skull {
    pub fn new(
        profile: Option<horizon_world::nbt::Tag>,
@@ -208,18 +104,6 @@ impl Skull {
        }
    }
 }
-/// `SkullBlockRenderer.getPlayerSkin` of a head's profile: its skin's URL
-/// with the `skins/<sha1>` sprite it downloads to, and the
-/// `DefaultPlayerSkin` drawn until that sprite is there (steve for a
-/// profile with no id).
-#[derive(Clone, Debug)]
-pub struct SkullSkin {
-    pub download: Option<(String, String)>,
-    /// `ResolvableProfile.nameOrId` when the profile is `Dynamic` (a name or
-    /// an id only): the key `skins::Resolver` resolves it by.
-    pub dynamic: Option<crate::skins::NameOrId>,
-    pub fallback: &'static str,
-}
 impl SkullSkin {
    pub fn of(profile: &horizon_world::nbt::Tag) -> Self {
        let download = crate::skins::profile_skin_url_nbt(profile).and_then(|url| {
@@ -248,18 +132,6 @@ impl SkullSkin {
 fn is_skull(name: &str) -> bool {
    name.ends_with("_skull") || (name.ends_with("_head") && name != "minecraft:piston_head")
 }
-/// `CrafterBlockEntity`: nine slots that can be disabled, the powered flag
-/// and the ticks left in the crafting animation.
-#[derive(Clone, Debug, Default)]
-pub struct Crafter {
-    pub items: [Option<ItemStack>; 9],
-    pub disabled: [bool; 9],
-    pub triggered: bool,
-    pub crafting_ticks: i32,
-    /// The block state's `triggered` when last ticked (not saved): the block
-    /// entity flag follows it only when it changes (`CrafterBlock.neighborChanged`).
-    pub state_triggered: Option<bool>,
-}
 impl Crafter {
    /// `slotCanBeDisabled`: only empty slots.
    pub fn slot_can_be_disabled(&self, slot: usize) -> bool {
@@ -299,48 +171,6 @@ impl Crafter {
        })
    }
 }
-#[derive(Clone, Debug, Default)]
-pub struct Banner {
-    pub layers: Vec<crate::banner::BannerLayer>,
-    pub name: Option<String>,
-    /// Components not consumed by BannerBlockEntity's implicit fields.
-    pub components: horizon_world::nbt::Compound,
-}
-/// `CreakingHeartBlockEntity` (the logic is in `game/creaking.rs`).
-#[derive(Clone, Debug, Default)]
-pub struct CreakingHeart {
-    /// The protector: its entity id once resolved, and its UUID (the saved form).
-    pub creaking: Option<(Option<u32>, [i32; 4])>,
-    pub ticks_existed: i64,
-    pub ticker: i32,
-    /// Ticks left of the hurt effect (`emitter`) and where it heads.
-    pub emitter: i32,
-    pub emitter_target: Option<[f64; 3]>,
-    pub output_signal: i32,
-}
-#[derive(Clone, Debug, Default)]
-pub struct Lectern {
-    pub book: Option<ItemStack>,
-    pub page: i32,
-}
-#[derive(Clone, Debug, Default)]
-pub struct Beacon {
-    pub levels: i32,
-    /// Effect ids (`minecraft:speed`).
-    pub primary: Option<String>,
-    pub secondary: Option<String>,
-    /// Beam sections (RGB colour, height) and the ones being rebuilt.
-    pub sections: Vec<(u32, i32)>,
-    pub checking: Vec<(u32, i32)>,
-    pub last_check_y: i32,
-}
-#[derive(Clone, Debug, Default)]
-pub struct Jukebox {
-    pub record: Option<ItemStack>,
-    /// `ticks_since_song_started`, while a song plays.
-    pub ticks: i64,
-    pub playing: bool,
-}
 impl BlockEntity {
    pub fn for_block(name: &str) -> Option<Self> {
        if let Some(hanging) = crate::signs::sign_kind(name) {
@@ -546,283 +376,7 @@ impl BlockEntity {
        }
    }
 }
-/// Evaluator for `context_int_provider` / `context_float_provider` values.
-pub struct Providers {
-    ints: HashMap<String, Value>,
-    floats: HashMap<String, Value>,
-}
-fn load_dir(dir: &Path, prefix: &str, out: &mut HashMap<String, Value>) {
-    let Ok(entries) = fs::read_dir(dir) else {
-        return;
-    };
-    for e in entries.flatten() {
-        let p = e.path();
-        let name = p
-            .file_stem()
-            .and_then(|s| s.to_str())
-            .unwrap_or("")
-            .to_owned();
-        if p.is_dir() {
-            load_dir(&p, &format!("{prefix}{name}/"), out);
-        } else if let Ok(bytes) = fs::read(&p)
-            && let Ok(v) = serde_json::from_slice(&bytes)
-        {
-            out.insert(format!("minecraft:{prefix}{name}"), v);
-        }
-    }
-}
-impl Providers {
-    pub fn load(root: &Path) -> Self {
-        let mut ints = HashMap::new();
-        let mut floats = HashMap::new();
-        load_dir(
-            &root.join("data/minecraft/context_int_provider"),
-            "",
-            &mut ints,
-        );
-        load_dir(
-            &root.join("data/minecraft/context_float_provider"),
-            "",
-            &mut floats,
-        );
-        Self { ints, floats }
-    }
-    fn eval(v: &Value, fast: bool, table: &HashMap<String, Value>, depth: u32) -> f64 {
-        if depth > 16 {
-            return 0.0;
-        }
-        match v {
-            Value::Number(n) => n.as_f64().unwrap_or(0.0),
-            Value::String(name) => table
-                .get(name)
-                .map_or(0.0, |v| Self::eval(v, fast, table, depth + 1)),
-            Value::Object(o) => {
-                let f =
-                    |k: &str| Self::eval(o.get(k).unwrap_or(&Value::Null), fast, table, depth + 1);
-                match o.get("type").and_then(Value::as_str).unwrap_or("") {
-                    "minecraft:div" => {
-                        let r = f("right");
-                        if r == 0.0 {
-                            0.0
-                        } else {
-                            (f("left") / r).trunc()
-                        }
-                    }
-                    "minecraft:mul" => f("left") * f("right"),
-                    "minecraft:add" | "minecraft:sum" => f("left") + f("right"),
-                    "minecraft:sub" => f("left") - f("right"),
-                    "minecraft:constant" => f("value"),
-                    "minecraft:conditional" => {
-                        // The only condition in the pinned data: block/fast_cooking.
-                        let condition = o.get("condition").and_then(Value::as_str)
-                            == Some("minecraft:block/fast_cooking");
-                        if condition && fast {
-                            f("on_true")
-                        } else {
-                            f("on_false")
-                        }
-                    }
-                    _ => 0.0,
-                }
-            }
-            _ => 0.0,
-        }
-    }
-    /// A plain `context_int_provider` value or reference (no context conditions).
-    pub fn int_value(&self, v: &Value) -> i32 {
-        Self::eval(v, false, &self.ints, 0) as i32
-    }
-    /// A plain `context_float_provider` value or reference; `default` when absent.
-    pub fn float_value(&self, v: &Value, default: f32) -> f32 {
-        if v.is_null() {
-            default
-        } else {
-            Self::eval(v, false, &self.floats, 0) as f32
-        }
-    }
-    #[cfg(test)]
-    pub fn empty() -> Self {
-        Self {
-            ints: HashMap::new(),
-            floats: HashMap::new(),
-        }
-    }
-    pub fn burn_time(&self, items: &Items, stack: &ItemStack, fast: bool) -> i32 {
-        items
-            .get(&stack.item)
-            .and_then(|i| i.fuel.as_ref())
-            .map_or(0, |(time, _)| Self::eval(time, fast, &self.ints, 0) as i32)
-    }
-    pub fn speed(&self, items: &Items, stack: &ItemStack, fast: bool) -> f32 {
-        items
-            .get(&stack.item)
-            .and_then(|i| i.fuel.as_ref())
-            .map_or(1.0, |(_, speed)| {
-                Self::eval(speed, fast, &self.floats, 0) as f32
-            })
-    }
-}
-fn remainder(item: &str) -> Option<&'static str> {
-    match item {
-        "minecraft:lava_bucket" | "minecraft:water_bucket" | "minecraft:milk_bucket" => {
-            Some("minecraft:bucket")
-        }
-        _ => None,
-    }
-}
-impl Furnace {
-    /// `AbstractFurnaceBlockEntity.setItem` on the input slot: anything but
-    /// the same item with the same components restarts cooking, with the
-    /// total time of the new input's recipe (200 ticks without one).
-    pub fn set_input(&mut self, recipes: &Recipes, stack: Option<ItemStack>) {
-        let same = match (&self.items[0], &stack) {
-            (Some(old), Some(new)) => old.same_item_same_components(new),
-            _ => false,
-        };
-        self.items[0] = stack;
-        if !same {
-            self.cooking_total = self.items[0]
-                .as_ref()
-                .and_then(|input| recipes.cook(self.kind.recipe_type(), input))
-                .map_or(200, |recipe| total_time(recipe.time, self.speed));
-            self.cooking_timer = 0;
-        }
-    }
-    /// `recipesUsed`, each recipe with its `experience` (0 for one this data pack does
-    /// not have), in the order `getRecipesToAwardAndPopExperience` pays them.
-    pub fn recipe_experience(&self, recipes: &Recipes) -> Vec<(u32, f32)> {
-        self.recipes_used
-            .iter()
-            .map(|(id, count)| (*count, recipes.cooking_experience(id)))
-            .collect()
-    }
-    /// A menu click wrote its slots into `items`, and `before` was the input
-    /// slot until then: the menu called `setItem` on it only if it changed
-    /// (`Slot.setByPlayer`; partial takes and merges keep the stack).
-    pub fn input_clicked(&mut self, recipes: &Recipes, before: Option<ItemStack>) {
-        if self.items[0] != before {
-            let after = std::mem::replace(&mut self.items[0], before);
-            self.set_input(recipes, after);
-        }
-    }
-    /// One server tick. Returns `Some(lit)` when the LIT block state must change.
-    pub fn tick(
-        &mut self,
-        recipes: &Recipes,
-        items: &Items,
-        providers: &Providers,
-    ) -> Option<bool> {
-        let was_lit = self.lit_remaining > 0;
-        let mut lit = false;
-        if self.lit_remaining > 0 {
-            self.lit_remaining -= 1;
-            lit = self.lit_remaining > 0;
-        }
-        let fast = self.kind.fast();
-        let has_ingredient = self.items[0].is_some();
-        let has_fuel = self.items[1].is_some();
-        if lit || has_fuel && has_ingredient {
-            if let Some(ingredient) = self.items[0].clone() {
-                if let Some(recipe) = recipes.cook(self.kind.recipe_type(), &ingredient) {
-                    if self.cooking_timer == 0 {
-                        self.cooking_total = total_time(recipe.time, self.speed);
-                    }
-                    let max = items.get(&recipe.result.item).map_or(64, |i| i.max_stack);
-                    let can_burn = match &self.items[2] {
-                        None => true,
-                        Some(out) => {
-                            out.item == recipe.result.item && out.count + recipe.result.count <= max
-                        }
-                    };
-                    if can_burn {
-                        if !lit {
-                            let fuel = self.items[1].clone();
-                            let time = fuel
-                                .as_ref()
-                                .map_or(0, |f| providers.burn_time(items, f, fast));
-                            let speed = fuel
-                                .as_ref()
-                                .map_or(1.0, |f| providers.speed(items, f, fast));
-                            self.lit_remaining = time;
-                            self.lit_total = time;
-                            self.speed = speed;
-                            if self.cooking_total > 0 && self.cooking_timer < self.cooking_total {
-                                let ratio = self.cooking_timer as f32 / self.cooking_total as f32;
-                                self.cooking_total = total_time(recipe.time, self.speed);
-                                self.cooking_timer =
-                                    (ratio * self.cooking_total as f32).ceil() as i32;
-                            }
-                            if time > 0 {
-                                if let Some(f) = self.items[1].as_mut() {
-                                    let item = f.item.clone();
-                                    f.count -= 1;
-                                    if f.count == 0 {
-                                        self.items[1] = remainder(&item).map(|r| ItemStack {
-                                            item: Arc::from(r),
-                                            count: 1,
-                                            damage: 0,
-                                            extra: None,
-                                        });
-                                    }
-                                }
-                                lit = true;
-                            }
-                        }
-                        if lit {
-                            self.cooking_timer += 1;
-                            if self.cooking_timer >= self.cooking_total {
-                                self.cooking_timer = 0;
-                                self.cooking_total = total_time(recipe.time, self.speed);
-                                match &mut self.items[2] {
-                                    Some(out) => out.count += recipe.result.count,
-                                    None => self.items[2] = Some(recipe.result.clone()),
-                                }
-                                *self
-                                    .recipes_used
-                                    .entry(recipe_used_key(&recipe.id))
-                                    .or_insert(0) += 1;
-                                // AbstractFurnaceBlockEntity.burn: drying a wet sponge fills
-                                // the bucket in the fuel slot.
-                                if self.items[0]
-                                    .as_ref()
-                                    .is_some_and(|i| &*i.item == "minecraft:wet_sponge")
-                                    && self.items[1]
-                                        .as_ref()
-                                        .is_some_and(|f| &*f.item == "minecraft:bucket")
-                                {
-                                    self.items[1] =
-                                        Some(ItemStack::new("minecraft:water_bucket", 1));
-                                }
-                                if let Some(i) = self.items[0].as_mut() {
-                                    i.count -= 1;
-                                    if i.count == 0 {
-                                        self.items[0] = None;
-                                    }
-                                }
-                            }
-                        } else {
-                            self.cooking_timer = 0;
-                        }
-                    } else {
-                        self.cooking_timer = 0;
-                    }
-                }
-            } else {
-                self.cooking_timer = 0;
-            }
-        } else if self.cooking_timer > 0 {
-            self.cooking_timer = (self.cooking_timer - 2).clamp(0, self.cooking_total);
-        }
-        (was_lit != lit).then_some(lit)
-    }
-}
-fn total_time(time: u32, speed: f32) -> i32 {
-    if speed > 0.0 {
-        (time as f32 / speed).ceil() as i32
-    } else {
-        time as i32
-    }
-}
+pub use crate::providers::Providers;

 /// `AbstractFurnaceBlockEntity.createExperience`: `count * experience`, floored, and one
 /// more with the chance of what is left over (a level random draw only when there is some).
@@ -355,6 +355,19 @@ impl Creative {
    pub fn search_items(&self) -> &[ItemStack] {
        &self.search_items
    }
+    /// Opening the screen: vanilla rebuilds CreativeModeInventoryScreen, whose
+    /// init() makes a fresh search box and a zeroed scrollbar; only the tab
+    /// persists (its static selectedTab). selectTab on the reopened screen
+    /// takes the oldTab != tab branch, so it empties and refocuses the box.
+    pub fn reopen(&mut self) {
+        self.search.set_value("");
+        self.release();
+        self.scroll = 0.0;
+        self.search.focused = self.tab().search;
+        if self.search.focused {
+            self.search.reset_blink();
+        }
+    }
    /// Indices into `search_items` that CreativeModeInventoryScreen.refreshSearchResults
    /// shows for `term`: the whole tab when empty, the tag tree after `#`, else
    /// the name tree, both over vanilla's suffix arrays (substring matches,
@@ -575,6 +588,8 @@ pub enum DisplayClick {
    Nothing,
    /// SWAP: the hotbar slot gets a full stack of the item.
    Hotbar(usize, ItemStack),
+    /// SWAP with button 40 (Key F): the off-hand gets a full stack of the item.
+    Offhand(ItemStack),
    /// THROW: a copy of the item is dropped.
    Drop(ItemStack),
 }
@@ -596,8 +611,11 @@ pub fn click_display(
    match input {
        Input::Swap => {
            return match shown {
-                Some(s) => DisplayClick::Hotbar(button as usize, copy(s, max(s))),
-                None => DisplayClick::Nothing,
+                Some(s) if button == 40 => DisplayClick::Offhand(copy(s, max(s))),
+                Some(s) if (0..9).contains(&button) => {
+                    DisplayClick::Hotbar(button as usize, copy(s, max(s)))
+                }
+                Some(_) | None => DisplayClick::Nothing,
            };
        }
        Input::Clone => {
@@ -720,11 +738,15 @@ mod tests {
            display(Some(stack("ender_pearl", 9)), 1, Pickup).0,
            Some(stack("ender_pearl", 8))
        );
-        // Number keys fill a hotbar slot, Q drops copies, pick block clones.
+        // Number keys fill a hotbar slot, F fills off-hand, Q drops copies, pick block clones.
        assert_eq!(
            display(None, 3, Swap).1,
            DisplayClick::Hotbar(3, stack("stone", 64))
        );
+        assert_eq!(
+            display(None, 40, Swap).1,
+            DisplayClick::Offhand(stack("stone", 64))
+        );
        assert_eq!(
            display(None, 0, Throw).1,
            DisplayClick::Drop(stack("stone", 1))
@@ -29,6 +29,10 @@ impl EffectInstance {
    fn infinite(&self) -> bool {
        self.duration == -1
    }
+    /// `MobEffectInstance.endsWithin`.
+    pub fn ends_within(&self, ticks: i32) -> bool {
+        !self.infinite() && self.duration <= ticks
+    }
    fn shorter_than(&self, other: &Self) -> bool {
        !self.infinite() && (self.duration < other.duration || other.infinite())
    }
@@ -129,15 +133,16 @@ fn periodic(id: &str, tick: i32, amp: i32) -> Option<EffectAction> {
        _ => None,
    }
 }
-/// `InstantenousMobEffect.applyInstantenousEffect` (potions apply these directly).
+/// `HealOrHarmMobEffect.applyInstantaneousEffect` (potions apply these directly;
+/// the amount rounds to the nearest whole point).
 pub fn instant(id: &str, amp: i32, scale: f64) -> Option<EffectAction> {
    match id {
        "instant_health" => Some(EffectAction::Heal(
-            (scale * f64::from(4 << amp.min(30))) as i32 as f32,
+            (scale * f64::from(4 << amp.min(30)) + 0.5) as i32 as f32,
        )),
        "instant_damage" => Some(EffectAction::Hurt(
            "minecraft:magic",
-            (scale * f64::from(6 << amp.min(30))) as i32 as f32,
+            (scale * f64::from(6 << amp.min(30)) + 0.5) as i32 as f32,
        )),
        "saturation" => Some(EffectAction::Eat(amp + 1, 1.0)),
        _ => None,
@@ -19,6 +19,8 @@ pub struct ItemEntity {
    pub id: u32,
    pub stack: ItemStack,
    pub thrower: Option<[i32; 4]>,
+    /// `ItemEntity.target`: the only player who may pick the item up.
+    pub target: Option<[i32; 4]>,
    pub position: Vec3,
    pub previous: Vec3,
    pub velocity: Vec3,
@@ -355,7 +357,10 @@ pub fn merge_with_neighbours(
        }
        // ItemEntity.areMergable: both fit one stack of the same item and components.
        let (this, other) = (&items[i].stack, &items[j].stack);
-        if this.count + other.count > max_stack(other) || !this.same_item_same_components(other) {
+        if items[i].target != items[j].target
+            || this.count + other.count > max_stack(other)
+            || !this.same_item_same_components(other)
+        {
            continue;
        }
        let (to, from) = if other.count < this.count {
@@ -951,6 +956,7 @@ mod fire_environment_tests {
        let make = |id: &str| ItemEntity {
            id: 1,
            thrower: None,
+            target: None,
            stack: ItemStack {
                item: std::sync::Arc::from(id),
                count: 1,
@@ -1047,6 +1053,7 @@ mod merge_tests {
        ItemEntity {
            id: 0,
            thrower: None,
+            target: None,
            stack: ItemStack {
                item: std::sync::Arc::from(id),
                count,
@@ -189,6 +189,7 @@ mod tests {
                extra: None,
            },
            thrower: None,
+            target: None,
            position: at,
            previous: at,
            velocity: Vec3::ZERO,
@@ -54,6 +54,8 @@ struct Out {
    // The `GLINT_TEXTURING` sample for overlay 7 (item foil), or the model UV
    // `ARMOR_ENTITY_GLINT_TEXTURING` scrolls for overlay 13 (armour).
    @location(11) glint_uv: vec2<f32>,
+    // 1 drops the quad's back-facing pixels (Vertex::normal w = 1), like a culling render type.
+    @location(12) @interpolate(flat) cull: u32,
 }
 // Shipped light.glsl; normals are already transformed and RGBA8_SNORM packed.
 fn entity_light(normal: vec3<f32>, nether: bool) -> f32 {
@@ -102,7 +104,10 @@ fn entity_vertex(position: vec3<f32>, uv: vec2<f32>,
    // minecraft_mix_light: the vertex colour times the cardinal light only.
    var c = color;
    var back = c;
-    if normal.w != 0.0 {
+    // Normal w: 0 keeps the baked colour, +-127 shades by the normal, and a small positive 1
+    // keeps the baked colour but culls back faces (entitySolid models such as the decorated pot).
+    out.cull = select(0u, 1u, normal.w > 0.0 && normal.w < 0.5);
+    if abs(normal.w) >= 0.5 {
        c = vec4(c.rgb * entity_light(normal.xyz, globals.time.y != 0.0), c.a);
        back = select(c, vec4(back.rgb * entity_light(-normal.xyz, globals.time.y != 0.0), back.a), normal.w < 0.0);
    }
@@ -234,7 +239,7 @@ fn crumbling_uv(uv: vec2<f32>, packed_origin: vec2<f32>, sprite_size: vec2<f32>,
        // clouds.fsh: alpha fades out towards the cloud fog end.
        return vec4(color.rgb, color.a * (1.0 - linear_fog(in.spherical, 0.0, globals.fog_ends.y)));
    }
-    if color.a < 0.1 { discard; }
+    if color.a < 0.1 || (in.cull != 0u && !front) { discard; }
    // entity.fsh calculateFinalColor: the overlay (hurt red, TNT white) over the
    // lit texture, then the lightmap, then the glint and fog.
    color = vec4(mix(in.overlay_color.rgb, color.rgb, in.overlay_color.a), color.a);
@@ -13,7 +13,6 @@ use crate::{
        doubles, float, floats, item_from_nbt, item_to_nbt, number, put, read_doubles, text,
        uuid_from_tag,
    },
-    text::Text,
 };
 use horizon_core::geometry::Vec3;
 use horizon_world::nbt::{Compound, Tag};
@@ -515,6 +514,12 @@ pub fn mob_to_nbt(m: &Mob, uuid: [i32; 4], raw: Option<&Tag>) -> Tag {
                "Variant".into(),
                Tag::Int(i32::from(m.extra.variant.min(4))),
            );
+            if let Some(owner) = m.extra.owner {
+                map.insert("Owner".into(), Tag::IntArray(owner.to_vec()));
+            } else {
+                map.remove(&"Owner".into());
+            }
+            map.insert("Sitting".into(), Tag::Byte(i8::from(m.extra.sitting)));
        }
        "minecraft:salmon" => {
            let size = SALMON_SIZES[usize::from(m.extra.variant).min(2)];
@@ -552,7 +557,10 @@ pub fn mob_to_nbt(m: &Mob, uuid: [i32; 4], raw: Option<&Tag>) -> Tag {
                        "memories",
                        Tag::compound([(
                            "minecraft:liked_player",
-                            Tag::compound([("value", Tag::IntArray(vec![0, 0, 0, 1]))]),
+                            Tag::compound([(
+                                "value",
+                                Tag::IntArray(m.extra.owner.unwrap_or([0, 0, 0, 1]).to_vec()),
+                            )]),
                        )]),
                    )]),
                );
@@ -606,6 +614,9 @@ pub fn mob_to_nbt(m: &Mob, uuid: [i32; 4], raw: Option<&Tag>) -> Tag {
                map.insert("life_ticks".into(), Tag::Int(m.extra.egg_time));
            }
        }
+        "minecraft:endermite" => {
+            map.insert("Lifetime".into(), Tag::Int(m.extra.counter));
+        }
        "minecraft:shulker" => {
            map.insert("AttachFace".into(), Tag::Byte(m.extra.variant3 as i8));
            map.insert("Peek".into(), Tag::Byte(m.extra.counter as i8));
@@ -712,6 +723,17 @@ pub fn mob_to_nbt(m: &Mob, uuid: [i32; 4], raw: Option<&Tag>) -> Tag {
                equipment.insert(slot.into(), crate::save::item_to_nbt(&stack));
                continue;
            }
+            // A wolf's armor keeps the durability it lost.
+            if slot == "body"
+                && m.species() == crate::mobs::Species::Wolf
+                && let Some(id) = item
+            {
+                let mut stack = crate::items::ItemStack::new(id, 1);
+                stack.damage = m.extra.body_damage.max(0) as u32;
+                stack.extra = m.extra.body_extra.clone();
+                equipment.insert(slot.into(), crate::save::item_to_nbt(&stack));
+                continue;
+            }
            match item {
                Some(id) => {
                    let keep = matches!(
@@ -851,14 +873,7 @@ fn custom_name(tag: &Tag) -> Option<String> {
        _ => None,
    }
 }
-/// `CustomName` as text: a string keeps its legacy formatting codes, anything
-/// else is a component (`ComponentSerialization`).
-pub fn name_text(tag: &Tag) -> Text {
-    match tag {
-        Tag::String(s) => Text::legacy(&s.to_string_lossy()),
-        t => crate::scoreboard::comp_text(&crate::scoreboard::tag_to_json(t)),
-    }
-}
+pub use horizon_client_core::component::name_text;
 /// Mob.finalizeSpawn's follow range bonus in the saved attributes.
 pub(crate) fn spawn_bonus(tag: &Tag) -> Option<f64> {
    let Some(Tag::List(attrs)) = tag.get("attributes") else {
@@ -1111,6 +1126,11 @@ pub fn mob_from_nbt(tag: &Tag, types: &HashMap<String, Arc<MobType>>, id: u32) -
        m.extra.variant = gene("MainGene");
        m.extra.variant2 = gene("HiddenGene");
    }
+    if m.species() == crate::mobs::Species::Parrot {
+        m.extra.owner = crate::save::uuid_from_tag(tag.get("Owner"));
+        m.extra.tame = m.extra.owner.is_some();
+        m.extra.sitting = flag(tag, "Sitting");
+    }
    if m.species() == crate::mobs::Species::Wolf {
        let health = m.health;
        m.extra.owner = crate::save::uuid_from_tag(tag.get("Owner"));
@@ -1118,6 +1138,12 @@ pub fn mob_from_nbt(tag: &Tag, types: &HashMap<String, Arc<MobType>>, id: u32) -
        crate::mobs::tame::set_tame(&mut m, tame);
        m.health = health;
        m.extra.sitting = flag(tag, "Sitting");
+        let armor = tag
+            .get("equipment")
+            .and_then(|e| e.get("body"))
+            .and_then(crate::save::item_from_nbt);
+        m.extra.body_damage = armor.as_ref().map_or(0, |s| s.damage as i32);
+        m.extra.body_extra = armor.and_then(|s| s.extra);
        m.extra.color =
            number(tag.get("CollarColor")).map_or(crate::mobs::tame::RED, |c| (c as u8) & 15);
    }
@@ -1148,11 +1174,14 @@ pub fn mob_from_nbt(tag: &Tag, types: &HashMap<String, Arc<MobType>>, id: u32) -
            m.extra.ints[1] = number(first.get("count")).unwrap_or(1) as i32;
        }
        m.extra.egg_time = number(tag.get("DuplicationCooldown")).unwrap_or(0) as i32;
-        m.extra.tame = tag
+        let liked = tag
            .get("Brain")
            .and_then(|b| b.get("memories"))
-            .and_then(|b| b.get("minecraft:liked_player"))
-            .is_some();
+            .and_then(|b| b.get("minecraft:liked_player"));
+        m.extra.tame = liked.is_some();
+        m.extra.owner = liked
+            .and_then(|l| l.get("value"))
+            .and_then(|v| crate::save::uuid_from_tag(Some(v)));
    }
    if crate::mobs::camel::is_camel(m.species()) {
        let sitting = matches!(tag.get("LastPoseTick"), Some(Tag::Long(v)) if *v < 0);
@@ -1230,6 +1259,9 @@ pub fn mob_from_nbt(tag: &Tag, types: &HashMap<String, Arc<MobType>>, id: u32) -
        m.extra.counter2 = number(tag.get("StunTick")).unwrap_or(0) as i32;
        m.extra.anim_ticks = number(tag.get("RoarTick")).unwrap_or(0) as i32;
    }
+    if m.species() == crate::mobs::Species::Endermite {
+        m.extra.counter = number(tag.get("Lifetime")).unwrap_or(0) as i32;
+    }
    if m.species() == crate::mobs::Species::Vex {
        if let Some(Tag::IntArray(v)) = tag.get("bound_pos")
            && v.len() == 3
@@ -1320,6 +1352,11 @@ pub fn item_entity_to_nbt(e: &ItemEntity, uuid: [i32; 4], raw: Option<&Tag>) ->
    } else if let Tag::Compound(map) = &mut tag {
        map.remove(&"Thrower".into());
    }
+    if let Some(target) = e.target {
+        put(&mut tag, "Owner", Tag::IntArray(target.to_vec()));
+    } else if let Tag::Compound(map) = &mut tag {
+        map.remove(&"Owner".into());
+    }
    tag
 }
 pub fn item_entity_from_nbt(tag: &Tag, id: u32, bob_offset: f32) -> Option<ItemEntity> {
@@ -1331,6 +1368,7 @@ pub fn item_entity_from_nbt(tag: &Tag, id: u32, bob_offset: f32) -> Option<ItemE
        id,
        stack,
        thrower: uuid_from_tag(tag.get("Thrower")),
+        target: uuid_from_tag(tag.get("Owner")),
        position,
        previous: position,
        velocity: motion(tag),
@@ -2240,6 +2278,7 @@ mod tests {
            health: 2,
            fire_ticks: 73,
            thrower: Some([5, 6, 7, 8]),
+            target: None,
            id: 7,
            stack: ItemStack {
                item: Arc::from("minecraft:diamond_pickaxe"),
@@ -26,6 +26,13 @@ pub enum ItemPose {
    Bow {
        ticks_used: f32,
    },
+    /// A spear being charged (`ItemUseAnimation.SPEAR`): the time held and
+    /// the ticks since its last hit's feedback.
+    Spear {
+        kinetic: crate::spear::Kinetic,
+        time_held: f32,
+        ticks_since_hit: f32,
+    },
    Crossbow {
        ticks_used: Option<f32>,
        charge_duration: f32,
@@ -69,6 +76,16 @@ pub fn item_pose(left: bool, inverse_height: f32, attack: f32, pose: ItemPose) -
    if matches!(pose, ItemPose::Using) {
        return m;
    }
+    // The spear's own place in the hand, without the equip height.
+    if let ItemPose::Spear {
+        kinetic,
+        time_held,
+        ticks_since_hit,
+    } = pose
+    {
+        return Mat4::from_translation(Vec3::new(invert * 0.56, -0.52, -0.72))
+            * crate::spear::first_person_use(&kinetic, ticks_since_hit, time_held, !left);
+    }
    if matches!(pose, ItemPose::SpinAttack) {
        return m
            * Mat4::from_translation(Vec3::new(invert * -0.4, 0.8, 0.3))
@@ -426,18 +443,7 @@ impl UseResult {
        matches!(self, Self::Success { swing: true }) && before == after
    }
 }
-pub fn consumable_animation(v: &serde_json::Value) -> horizon_world::consumable::UseAnimation {
-    use horizon_world::consumable::UseAnimation;
-    match v
-        .get("animation")
-        .and_then(serde_json::Value::as_str)
-        .unwrap_or("eat")
-    {
-        "eat" => UseAnimation::Eat,
-        "drink" => UseAnimation::Drink,
-        _ => UseAnimation::None,
-    }
-}
+pub use horizon_items::use_animation::consumable_animation;
 /// What the click handling reads and does in the world.
 pub trait HandWorld {
    fn hit(&mut self) -> Hit;
@@ -0,0 +1,173 @@
+//! `AbstractFurnaceBlockEntity`'s cooking over the furnace data the chunk
+//! holds (`containers::Furnace`): it needs the recipes, so it lives above them.
+use crate::{
+    containers::{Furnace, recipe_used_key},
+    crafting::Recipes,
+    items::{ItemStack, Items},
+    providers::Providers,
+};
+use std::sync::Arc;
+
+/// The furnace methods that read the recipes.
+pub trait FurnaceCooking {
+    /// `AbstractFurnaceBlockEntity.setItem` on the input slot: anything but
+    /// the same item with the same components restarts cooking, with the
+    /// total time of the new input's recipe (200 ticks without one).
+    fn set_input(&mut self, recipes: &Recipes, stack: Option<ItemStack>);
+    /// `recipesUsed`, each recipe with its `experience` (0 for one this data pack does
+    /// not have), in the order `getRecipesToAwardAndPopExperience` pays them.
+    fn recipe_experience(&self, recipes: &Recipes) -> Vec<(u32, f32)>;
+    /// A menu click wrote its slots into `items`, and `before` was the input
+    /// slot until then: the menu called `setItem` on it only if it changed
+    /// (`Slot.setByPlayer`; partial takes and merges keep the stack).
+    fn input_clicked(&mut self, recipes: &Recipes, before: Option<ItemStack>);
+    /// One server tick. Returns `Some(lit)` when the LIT block state must change.
+    fn tick(&mut self, recipes: &Recipes, items: &Items, providers: &Providers) -> Option<bool>;
+}
+fn remainder(item: &str) -> Option<&'static str> {
+    match item {
+        "minecraft:lava_bucket" | "minecraft:water_bucket" | "minecraft:milk_bucket" => {
+            Some("minecraft:bucket")
+        }
+        _ => None,
+    }
+}
+impl FurnaceCooking for Furnace {
+    fn set_input(&mut self, recipes: &Recipes, stack: Option<ItemStack>) {
+        let same = match (&self.items[0], &stack) {
+            (Some(old), Some(new)) => old.same_item_same_components(new),
+            _ => false,
+        };
+        self.items[0] = stack;
+        if !same {
+            self.cooking_total = self.items[0]
+                .as_ref()
+                .and_then(|input| recipes.cook(self.kind.recipe_type(), input))
+                .map_or(200, |recipe| total_time(recipe.time, self.speed));
+            self.cooking_timer = 0;
+        }
+    }
+    fn recipe_experience(&self, recipes: &Recipes) -> Vec<(u32, f32)> {
+        self.recipes_used
+            .iter()
+            .map(|(id, count)| (*count, recipes.cooking_experience(id)))
+            .collect()
+    }
+    fn input_clicked(&mut self, recipes: &Recipes, before: Option<ItemStack>) {
+        if self.items[0] != before {
+            let after = std::mem::replace(&mut self.items[0], before);
+            self.set_input(recipes, after);
+        }
+    }
+    fn tick(&mut self, recipes: &Recipes, items: &Items, providers: &Providers) -> Option<bool> {
+        let was_lit = self.lit_remaining > 0;
+        let mut lit = false;
+        if self.lit_remaining > 0 {
+            self.lit_remaining -= 1;
+            lit = self.lit_remaining > 0;
+        }
+        let fast = self.kind.fast();
+        let has_ingredient = self.items[0].is_some();
+        let has_fuel = self.items[1].is_some();
+        if lit || has_fuel && has_ingredient {
+            if let Some(ingredient) = self.items[0].clone() {
+                if let Some(recipe) = recipes.cook(self.kind.recipe_type(), &ingredient) {
+                    if self.cooking_timer == 0 {
+                        self.cooking_total = total_time(recipe.time, self.speed);
+                    }
+                    let max = items.get(&recipe.result.item).map_or(64, |i| i.max_stack);
+                    let can_burn = match &self.items[2] {
+                        None => true,
+                        Some(out) => {
+                            out.item == recipe.result.item && out.count + recipe.result.count <= max
+                        }
+                    };
+                    if can_burn {
+                        if !lit {
+                            let fuel = self.items[1].clone();
+                            let time = fuel
+                                .as_ref()
+                                .map_or(0, |f| providers.burn_time(items, f, fast));
+                            let speed = fuel
+                                .as_ref()
+                                .map_or(1.0, |f| providers.speed(items, f, fast));
+                            self.lit_remaining = time;
+                            self.lit_total = time;
+                            self.speed = speed;
+                            if self.cooking_total > 0 && self.cooking_timer < self.cooking_total {
+                                let ratio = self.cooking_timer as f32 / self.cooking_total as f32;
+                                self.cooking_total = total_time(recipe.time, self.speed);
+                                self.cooking_timer =
+                                    (ratio * self.cooking_total as f32).ceil() as i32;
+                            }
+                            if time > 0 {
+                                if let Some(f) = self.items[1].as_mut() {
+                                    let item = f.item.clone();
+                                    f.count -= 1;
+                                    if f.count == 0 {
+                                        self.items[1] = remainder(&item).map(|r| ItemStack {
+                                            item: Arc::from(r),
+                                            count: 1,
+                                            damage: 0,
+                                            extra: None,
+                                        });
+                                    }
+                                }
+                                lit = true;
+                            }
+                        }
+                        if lit {
+                            self.cooking_timer += 1;
+                            if self.cooking_timer >= self.cooking_total {
+                                self.cooking_timer = 0;
+                                self.cooking_total = total_time(recipe.time, self.speed);
+                                match &mut self.items[2] {
+                                    Some(out) => out.count += recipe.result.count,
+                                    None => self.items[2] = Some(recipe.result.clone()),
+                                }
+                                *self
+                                    .recipes_used
+                                    .entry(recipe_used_key(&recipe.id))
+                                    .or_insert(0) += 1;
+                                // AbstractFurnaceBlockEntity.burn: drying a wet sponge fills
+                                // the bucket in the fuel slot.
+                                if self.items[0]
+                                    .as_ref()
+                                    .is_some_and(|i| &*i.item == "minecraft:wet_sponge")
+                                    && self.items[1]
+                                        .as_ref()
+                                        .is_some_and(|f| &*f.item == "minecraft:bucket")
+                                {
+                                    self.items[1] =
+                                        Some(ItemStack::new("minecraft:water_bucket", 1));
+                                }
+                                if let Some(i) = self.items[0].as_mut() {
+                                    i.count -= 1;
+                                    if i.count == 0 {
+                                        self.items[0] = None;
+                                    }
+                                }
+                            }
+                        } else {
+                            self.cooking_timer = 0;
+                        }
+                    } else {
+                        self.cooking_timer = 0;
+                    }
+                }
+            } else {
+                self.cooking_timer = 0;
+            }
+        } else if self.cooking_timer > 0 {
+            self.cooking_timer = (self.cooking_timer - 2).clamp(0, self.cooking_total);
+        }
+        (was_lit != lit).then_some(lit)
+    }
+}
+fn total_time(time: u32, speed: f32) -> i32 {
+    if speed > 0.0 {
+        (time as f32 / speed).ceil() as i32
+    } else {
+        time as i32
+    }
+}
@@ -719,6 +719,19 @@ impl Game<'_> {
            adv::conditions(&c["player"], &pctx, w) && adv::conditions(&c[&key], &ectx, w)
        });
    }
+    /// `KilledByArrowTrigger`: what the arrow killed and the weapon it came from.
+    pub(super) fn trigger_killed_by_arrow(
+        &mut self,
+        victims: &[EntityView],
+        weapon: Option<&ItemStack>,
+    ) {
+        let me = self.player_entity();
+        let victims = victims.to_vec();
+        let weapon = weapon.map(item_view);
+        self.trigger("minecraft:killed_by_arrow", move |c, w| {
+            adv::killed_by_arrow(c, &me, &victims, weapon.as_ref(), w)
+        });
+    }
    /// `LevitationTrigger`: how far the player rose from where it started
    /// levitating, and for how long.
    fn trigger_levitation(&mut self, start: [f64; 3], duration: i64) {
@@ -863,6 +876,35 @@ impl Game<'_> {
        let it = item_view(stack);
        self.trigger(name, |c, w| adv::item_entity(c, &me, target, &it, w));
    }
+    /// `ConstructBeaconTrigger`: the pyramid levels of the new beacon.
+    pub(super) fn trigger_construct_beacon(&mut self, levels: i32) {
+        let me = self.player_entity();
+        self.trigger("minecraft:construct_beacon", move |c, w| {
+            let pctx = adv::Entities {
+                this: Some(&me),
+                origin: me.position,
+                tool: None,
+                block_pos: None,
+            };
+            adv::conditions(&c["player"], &pctx, w) && adv::range_i(&c["level"], i64::from(levels))
+        });
+    }
+    /// `EnchantedItemTrigger`: the enchanted item and the levels it cost.
+    pub(super) fn trigger_enchanted_item(&mut self, stack: &ItemStack, levels: i32) {
+        let me = self.player_entity();
+        let it = item_view(stack);
+        self.trigger("minecraft:enchanted_item", move |c, w| {
+            let pctx = adv::Entities {
+                this: Some(&me),
+                origin: me.position,
+                tool: None,
+                block_pos: None,
+            };
+            adv::conditions(&c["player"], &pctx, w)
+                && adv::item(&c["item"], &it, w)
+                && adv::range_i(&c["levels"], i64::from(levels))
+        });
+    }
    /// `BrewedPotionTrigger`: the potion contents of a stack taken from a
    /// brewing stand.
    pub(super) fn trigger_brewed_potion(&mut self, stack: &ItemStack) {
@@ -951,6 +993,42 @@ impl Game<'_> {
            block_ok && state_ok && adv::conditions(&c["player"], &pctx, w)
        });
    }
+    /// `SlideDownBlockTrigger`: match the actual block and its state.
+    pub(super) fn trigger_honey_slide(&mut self, pos: [i32; 3]) {
+        let me = self.player_entity();
+        self.trigger("minecraft:slide_down_block", move |c, w| {
+            let ctx = adv::Entities {
+                this: Some(&me),
+                origin: me.position,
+                tool: None,
+                block_pos: None,
+            };
+            adv::conditions(&c["player"], &ctx, w) && adv::block(c, pos, w)
+        });
+    }
+
+    /// `TargetBlockTrigger`: signal and projectile conditions are evaluated in
+    /// the shooter's context, including distance from the shooter.
+    pub(super) fn trigger_target_hit(&mut self, projectile: &EntityView, strength: i32) {
+        let me = self.player_entity();
+        let projectile = projectile.clone();
+        self.trigger("minecraft:target_hit", move |c, w| {
+            let player = adv::Entities {
+                this: Some(&me),
+                origin: me.position,
+                tool: None,
+                block_pos: None,
+            };
+            let target = adv::Entities {
+                this: Some(&projectile),
+                ..player
+            };
+            adv::conditions(&c["player"], &player, w)
+                && adv::range_i(&c["signal_strength"], i64::from(strength))
+                && adv::conditions(&c["projectile"], &target, w)
+        });
+    }
+
    /// `ItemUsedOnLocationTrigger` (placed_block, item_used_on_block).
    pub(super) fn trigger_block(&mut self, name: &str, pos: [i32; 3], stack: &ItemStack) {
        let me = self.player_entity();
@@ -8,7 +8,6 @@ use horizon_core::random::RandomSource;
 impl Game<'_> {
    pub(super) fn tick_allays(&mut self) {
        let griefing = self.ui.rules.bool("mob_griefing");
-        let player = self.player.as_ref().map(|p| p.position);
        // The playing jukeboxes, found at the first allay: no allay starts
        // or stops one, and the block entities run into the thousands.
        let mut jukeboxes: Option<Vec<(i32, i32, i32)>> = None;
@@ -58,7 +57,7 @@ impl Game<'_> {
            };
            let Some((j, _)) = wanted else {
                self.mobs[i].extra.point = None;
-                self.allay_deliver(i, player);
+                self.allay_deliver(i);
                continue;
            };
            let e = &self.dropped[j];
@@ -90,14 +89,46 @@ impl Game<'_> {
            }
        }
    }
+    /// `AllayAi.getLikedPlayer`: the player the allay was given an item by,
+    /// found by UUID among the host and the guests of the level (the window
+    /// is a guest on the server thread), when they are not a spectator and
+    /// within 64 blocks.
+    fn allay_liked_player(&self, i: usize) -> Option<horizon_core::geometry::Vec3> {
+        let m = &self.mobs[i];
+        if !m.extra.tame {
+            return None;
+        }
+        // An allay saved before its player was kept belongs to the host.
+        let uuid = m
+            .extra
+            .owner
+            .filter(|u| *u != [0, 0, 0, 1])
+            .or(self.level.player_uuid)
+            .unwrap_or([0, 0, 0, 1]);
+        let host = self
+            .player_view()
+            .filter(|p| !p.spectator && self.level.player_uuid.unwrap_or([0, 0, 0, 1]) == uuid)
+            .map(|p| p.position);
+        let found = host.or_else(|| {
+            self.lan_present()
+                .into_iter()
+                .find(|p| p.uuid == uuid && !p.spectator)
+                .map(|p| {
+                    horizon_core::geometry::Vec3::new(p.position[0], p.position[1], p.position[2])
+                })
+        });
+        found.filter(|p| p.distance_squared(m.position) < 64.0 * 64.0)
+    }
    /// `GoAndGiveItemsToTarget` / `AllayAi.throwItem`: within 3 blocks of
    /// the deposit, one item a tick, each restarting the three-second pause
    /// before it picks anything up again.
-    fn allay_deliver(&mut self, i: usize, player: Option<horizon_core::geometry::Vec3>) {
+    fn allay_deliver(&mut self, i: usize) {
        let m = &self.mobs[i];
        if m.extra.ints[1] <= 0 {
            return;
        }
+        let player = self.allay_liked_player(i);
+        let m = &self.mobs[i];
        let target = match m.extra.home.filter(|_| m.extra.ints[2] > 0) {
            Some(h) => horizon_core::geometry::Vec3::new(
                f64::from(h[0]) + 0.5,
@@ -167,11 +198,14 @@ impl Game<'_> {
            self.consume_held();
            return true;
        }
+        let acting = self.acting_uuid();
        let holds = m.extra.main_hand.is_some();
        if !holds && !item.is_empty() {
            let m = &mut self.mobs[index];
            m.extra.main_hand = Some(item.into());
            m.extra.tame = true;
+            // `Allay.mobInteract` remembers LIKED_PLAYER by UUID.
+            m.extra.owner = Some(acting);
            self.audio
                .play("minecraft:entity.allay.item_given", Some(at), 2.0, 1.0);
            self.consume_held();
@@ -186,6 +220,7 @@ impl Game<'_> {
                .unwrap_or_else(|| "minecraft:air".into());
            let carried = std::mem::take(&mut m.extra.ints[1]);
            m.extra.tame = false;
+            m.extra.owner = None;
            self.audio
                .play("minecraft:entity.allay.item_taken", Some(at), 2.0, 1.0);
            if carried > 0 {
@@ -164,11 +164,35 @@ impl Game<'_> {
            let (was, is) = (previous > 0, b.levels > 0);
            if !was && is {
                self.beacon_sound([x, y, z], "minecraft:block.beacon.activate");
+                let levels = b.levels;
+                self.for_each_player(|g| g.beacon_constructed([x, y, z], levels));
            } else if was && !is {
                self.beacon_sound([x, y, z], "minecraft:block.beacon.deactivate");
            }
        }
    }
+    /// `BeaconBlockEntity.tick` after activating: `CONSTRUCT_BEACON` for a
+    /// player in the box `AABB(x, y, z, x, y - 4, z).inflate(10, 5, 10)`.
+    fn beacon_constructed(&mut self, p: [i32; 3], levels: i32) {
+        let Some(bb) = self
+            .player
+            .as_ref()
+            .map(|pl| pl.dimensions.bounds(pl.position))
+        else {
+            return;
+        };
+        let (lo, hi) = (bb.min_position(), bb.max_position());
+        let [x, y, z] = p.map(f64::from);
+        if lo.x < x + 10.0
+            && hi.x > x - 10.0
+            && lo.y < y + 5.0
+            && hi.y > y - 9.0
+            && lo.z < z + 10.0
+            && hi.z > z - 10.0
+        {
+            self.trigger_construct_beacon(levels);
+        }
+    }
    pub(super) fn beacon_sound(&mut self, p: [i32; 3], sound: &str) {
        let at = [
            f64::from(p[0]) + 0.5,
@@ -539,13 +563,21 @@ impl Game<'_> {
        };
        let time = (self.world.game_time.rem_euclid(40)) as f32 + alpha as f32;
        let scoping = self.scoping();
+        let view = f64::from(self.settings.render_distance * 16);
        for (k, e) in &self.world.block_entities {
            let BlockEntity::Beacon(b) = e else { continue };
+            // `getBeamSections` is empty while Levels is 0.
            if b.levels == 0 || b.sections.is_empty() {
                continue;
            }
            let base = glam::DVec3::new(f64::from(k.0) + 0.5, f64::from(k.1), f64::from(k.2) + 0.5);
-            let distance = (base - camera).truncate().length() as f32;
+            // `BeaconRenderer.shouldRender`: horizontal distance under render distance × 16.
+            let offset = base - camera;
+            let horizontal = glam::DVec2::new(offset.x, offset.z).length();
+            if horizontal >= view {
+                continue;
+            }
+            let distance = horizontal as f32;
            let scale = if scoping {
                1.0
            } else {
@@ -9,6 +9,7 @@ use horizon_client::{
    Result,
    block_entities::{Pos, Ticking},
    containers::{BlockEntity, FurnaceKind, HOPPER_SLOTS},
+    furnace::FurnaceCooking,
 };
 use horizon_core::position::BlockPos;
 use horizon_world::registry::BlockStateId;
@@ -4,9 +4,13 @@
 //! placed item gives its block entity.
 use super::Game;
 use horizon_client::{
-    block_entity_item, block_entity_nbt, containers::BlockEntity, item_data, items::ItemStack, save,
+    Result, block_entity_item, block_entity_nbt, containers::BlockEntity, item_data,
+    items::ItemStack, save,
+};
+use horizon_world::{
+    nbt::{Compound, Tag},
+    registry::BlockStateId,
 };
-use horizon_world::nbt::{Compound, Tag};

 /// The component patch of `stack`.
 fn components(stack: &ItemStack) -> Compound {
@@ -77,6 +81,42 @@ impl Game<'_> {
        Some(stack)
    }

+    /// `BlockItem.updateBlockStateFromTag`: the properties of the item's
+    /// `block_state` component (a hive's honey level, a statue's pose) set on
+    /// the block just placed at `pos`. Returns the state it has now.
+    pub(super) fn apply_item_block_state(
+        &mut self,
+        pos: [i32; 3],
+        state: BlockStateId,
+        stack: &ItemStack,
+    ) -> Result<BlockStateId> {
+        let Some(Tag::Compound(saved)) =
+            stack.data().and_then(|d| d.other("minecraft:block_state"))
+        else {
+            return Ok(state);
+        };
+        let Some(current) = self.pack.assets.registry.state(state) else {
+            return Ok(state);
+        };
+        // Only the properties the block has.
+        let props: Vec<(String, String)> = saved
+            .iter()
+            .filter_map(|(k, v)| match v {
+                Tag::String(v) => Some((k.to_string_lossy(), v.to_string_lossy())),
+                _ => None,
+            })
+            .filter(|(k, v)| current.properties.get(k).is_some_and(|old| old != v))
+            .collect();
+        let props: Vec<(&str, &str)> = props.iter().map(|(k, v)| (&**k, &**v)).collect();
+        match self.with_props(state, &props) {
+            Some(new) if !props.is_empty() && new != state => {
+                self.level_set(pos, new)?;
+                Ok(new)
+            }
+            _ => Ok(state),
+        }
+    }
+
    /// `BlockItem.updateCustomBlockEntityTag` and `updateBlockEntityComponents`
    /// for the block entity just placed at `pos` from `stack`; `game_master`:
    /// the placer can use game master blocks (a dispenser can't).
@@ -76,9 +76,11 @@ fn view_pages(data: Option<&StackData>) -> Vec<Text> {
        .iter()
        .enumerate()
        .map(|(i, page)| match tagged.then(|| &w.page_tags[i]) {
-            Some(tag @ horizon_world::nbt::Tag::Compound(_)) => {
-                horizon_client::entity_nbt::name_text(tag)
-            }
+            // A component object, or a component list (`ComponentSerialization`
+            // takes both; servers behind ViaVersion send the list form).
+            Some(
+                tag @ (horizon_world::nbt::Tag::Compound(_) | horizon_world::nbt::Tag::List(_)),
+            ) => horizon_client::entity_nbt::name_text(tag),
            _ => Text::literal(page),
        })
        .collect()
@@ -137,6 +139,18 @@ impl Game<'_> {
                }
            }
            ClickEvent::OpenUrl(url) => self.click_url(url),
+            ClickEvent::RunCommand(command) => self.click_command(&command),
+            ClickEvent::SuggestCommand(command) => {
+                // defaultHandleClickEvent: the chat screen takes it over.
+                if self.player.is_some() {
+                    self.close_book();
+                    self.open_chat(&command);
+                }
+            }
+            ClickEvent::CopyToClipboard(value) => {
+                use horizon_client::clipboard::Clipboard;
+                self.clipboard.set(&value);
+            }
            _ => {}
        }
    }
@@ -1144,7 +1158,12 @@ impl Game<'_> {
                        BLACK,
                    );
                }
-                let by = tr("book.byAuthor", "by %1$s").replace("%1$s", super::chat::PLAYER_NAME);
+                // BookSignScreen: `owner.getName()`, the account's name on a server.
+                let owner = self
+                    .remote
+                    .as_ref()
+                    .map_or(super::chat::PLAYER_NAME, |r| r.profile_name.as_str());
+                let by = tr("book.byAuthor", "by %1$s").replace("%1$s", owner);
                let tw = HudBatch::text_width(atlas, &by);
                batch.text(
                    atlas,
@@ -0,0 +1,246 @@
+//! Brushing suspicious sand and gravel: `BrushItem.onUseTick` and
+//! `BrushableBlockEntity`. The block's loot table stays in its saved block
+//! entity (like a decorated pot's) until the first counted stroke rolls it.
+use super::{Game, Hit, decorated_pot, spill, view_vector};
+use horizon_client::{
+    particles::{ParticleOptions, ParticleType},
+    save,
+};
+use horizon_core::random::RandomSource;
+use std::collections::HashMap;
+
+/// `BrushItem.USE_DURATION`.
+const USE_DURATION: u32 = 200;
+
+/// A brushable block's counters. Vanilla never saves them: the block's
+/// `dusted` state is all that is left after a reload.
+#[derive(Default)]
+pub(super) struct BrushState {
+    count: i32,
+    resets_at: i64,
+    cooldown_ends_at: i64,
+    hit_face: Option<[i32; 3]>,
+}
+
+/// `BrushableBlockEntity.getCompletionState`: the `dusted` property.
+fn completion_state(count: i32) -> i32 {
+    match count {
+        0 => 0,
+        1..=2 => 1,
+        3..=5 => 2,
+        _ => 3,
+    }
+}
+
+pub(super) type Brushing = HashMap<[i32; 3], BrushState>;
+
+impl Game<'_> {
+    /// `BrushItem.onUseTick` for a brush used `ticks` ticks so far, the
+    /// hand of `slot` acting.
+    pub(super) fn tick_brush(&mut self, slot: usize, ticks: u32) {
+        // No block under the crosshair: releaseUsingItem.
+        let Some(hit) = self.pick() else {
+            self.using = None;
+            return;
+        };
+        let elapsed = ticks + 1;
+        // The last tick before the backswing.
+        if elapsed % 10 == 5 {
+            self.brush_stroke(&hit, slot);
+        }
+        // The use ends after 200 ticks; the held button starts it again.
+        self.using = (elapsed < USE_DURATION).then_some((slot, elapsed));
+    }
+
+    /// One stroke on the block aimed at: dust (this window only), the brush
+    /// sound, and the block entity's count. The brush wears when the block
+    /// changed state.
+    fn brush_stroke(&mut self, hit: &Hit, slot: usize) {
+        let state = self.world.block(hit.pos[0], hit.pos[1], hit.pos[2]);
+        let name = self.res.facts().get(state).name.clone();
+        let (sound, brushable) = match &*name {
+            "minecraft:suspicious_sand" => ("minecraft:item.brush.brushing.sand", true),
+            "minecraft:suspicious_gravel" => ("minecraft:item.brush.brushing.gravel", true),
+            _ => ("minecraft:item.brush.brushing.generic", false),
+        };
+        if self.lan_acting.is_none() {
+            self.brush_dust(hit, slot == super::shield::OFFHAND_SLOT);
+        }
+        let at = hit.pos.map(|v| f64::from(v) + 0.5);
+        self.audio.play(sound, Some(at), 1.0, 1.0);
+        if brushable && self.brush_block(hit.pos, hit.face) {
+            self.damage_held(1);
+        }
+    }
+
+    /// `BrushItem.spawnDustParticles`.
+    pub(super) fn brush_dust(&mut self, hit: &Hit, off_hand: bool) {
+        let state = self.world.block(hit.pos[0], hit.pos[1], hit.pos[2]);
+        let Some((sprite, tint)) = self.particle_sprite(state, hit.pos) else {
+            return;
+        };
+        let options = ParticleOptions::block(ParticleType::Block, sprite, tint);
+        // The arm that brushes: the main arm, or the other one for the off hand.
+        let flip = if off_hand == self.settings.main_hand_left {
+            1.0
+        } else {
+            -1.0
+        };
+        let view = view_vector(self.yaw, self.pitch);
+        // DustParticlesDelta.fromDirection.
+        let (dx, dz) = match hit.face {
+            [0, _, 0] => (view[2], -view[0]),
+            [0, 0, -1] => (1.0, -0.1),
+            [0, 0, 1] => (-1.0, 0.1),
+            [-1, 0, 0] => (-0.1, -1.0),
+            _ => (0.1, 1.0),
+        };
+        let count = 7 + self.particles.level_random().next_int_bound(5).unwrap_or(0);
+        let x = hit.point[0] - if hit.face == [-1, 0, 0] { 1.0e-6 } else { 0.0 };
+        let z = hit.point[2] - if hit.face == [0, 0, -1] { 1.0e-6 } else { 0.0 };
+        for _ in 0..count {
+            let random = self.particles.level_random();
+            let v = [
+                dx * flip * 3.0 * random.next_double(),
+                0.0,
+                dz * flip * 3.0 * random.next_double(),
+            ];
+            self.particles.add(&options, [x, hit.point[1], z], v);
+        }
+    }
+
+    /// `BrushableBlockEntity.brush`: whether the block changed (the brush wears).
+    fn brush_block(&mut self, pos: [i32; 3], face: [i32; 3]) -> bool {
+        let time = self.world.game_time;
+        let mut brush = self.brushing.remove(&pos).unwrap_or_default();
+        brush.hit_face.get_or_insert(face);
+        brush.resets_at = time + 40;
+        if time < brush.cooldown_ends_at {
+            self.brushing.insert(pos, brush);
+            return false;
+        }
+        brush.cooldown_ends_at = time + 10;
+        self.unpack_brush_loot(pos);
+        let before = completion_state(brush.count);
+        brush.count += 1;
+        if brush.count >= 10 {
+            self.brushing_completed(pos, brush.hit_face);
+            return true;
+        }
+        self.schedule_brushable_tick(pos);
+        let after = completion_state(brush.count);
+        self.brushing.insert(pos, brush);
+        if before != after {
+            self.set_dusted(pos, after);
+        }
+        false
+    }
+
+    /// `BrushableBlockEntity.unpackLootTable`: the table's roll becomes the
+    /// block entity's item.
+    fn unpack_brush_loot(&mut self, pos: [i32; 3]) {
+        let Some(mut tag) = spill::saved_entity(&self.world, pos) else {
+            return;
+        };
+        if tag.get("LootTable").is_none() {
+            return;
+        }
+        let loot = horizon_client::structure_blocks::loot_data(&self.options.resources);
+        decorated_pot::unpack_loot(
+            &mut tag,
+            loot.as_deref(),
+            &mut self.world.random,
+            &mut self.rand_sequences,
+            self.level.seed,
+        );
+        spill::put_saved_entity(&mut self.world, pos, tag);
+    }
+
+    /// `BrushableBlockEntity.brushingCompleted`: the item drops out of the
+    /// brushed face and the block turns into its sand or gravel.
+    fn brushing_completed(&mut self, pos: [i32; 3], face: Option<[i32; 3]>) {
+        let state = self.world.block(pos[0], pos[1], pos[2]);
+        let turns_into = match &*self.res.facts().get(state).name {
+            "minecraft:suspicious_sand" => "minecraft:sand",
+            "minecraft:suspicious_gravel" => "minecraft:gravel",
+            _ => "minecraft:air",
+        };
+        // dropContent: the item at the middle of the block beside that face.
+        let item = spill::saved_entity(&self.world, pos)
+            .and_then(|tag| tag.get("item").and_then(save::item_from_nbt));
+        if let Some(mut item) = item {
+            let face = face.unwrap_or([0, 1, 0]);
+            let take = 10 + self.world.random.next_int_bound(21).unwrap_or(0);
+            item.count = item.count.min(take as u32);
+            let at = [
+                f64::from(pos[0] + face[0]) + 0.5,
+                f64::from(pos[1] + face[1]) + 0.625,
+                f64::from(pos[2] + face[2]) + 0.5,
+            ];
+            self.spawn_item(item, at, [0.0; 3], 0);
+        }
+        // Level event 3008 for every player, then the block change.
+        self.level_event_at(3008, pos, state.0 as i32);
+        if let Some(base) = self.pack.assets.registry.default_state(turns_into) {
+            let _ = self.level_set(pos, base);
+        }
+    }
+
+    fn set_dusted(&mut self, pos: [i32; 3], dusted: i32) {
+        let registry = self.pack.assets.registry;
+        let Some(mut state) = registry
+            .state(self.world.block(pos[0], pos[1], pos[2]))
+            .cloned()
+        else {
+            return;
+        };
+        state.properties.insert("dusted".into(), dusted.to_string());
+        if let Ok(state) = registry.resolve(&state) {
+            let _ = self.level_set(pos, state);
+        }
+    }
+
+    fn schedule_brushable_tick(&mut self, pos: [i32; 3]) {
+        let at = horizon_core::position::BlockPos::new(pos[0], pos[1], pos[2]);
+        self.with_level(|b, level, ticks| b.schedule_tick(level, ticks, at, 2));
+    }
+
+    /// `BrushableBlockEntity.checkReset`, from `BrushableBlock.tick`: a block
+    /// left alone loses two counts, again every four ticks.
+    pub(super) fn brushable_tick(&mut self, pos: [i32; 3]) {
+        let time = self.world.game_time;
+        let Some(mut brush) = self.brushing.remove(&pos) else {
+            return;
+        };
+        let before = completion_state(brush.count);
+        if brush.count != 0 && time >= brush.resets_at {
+            brush.count = (brush.count - 2).max(0);
+            brush.resets_at = time + 4;
+        }
+        let after = completion_state(brush.count);
+        if brush.count != 0 {
+            self.brushing.insert(pos, brush);
+            self.schedule_brushable_tick(pos);
+        }
+        if before != after {
+            self.set_dusted(pos, after);
+        }
+    }
+
+    /// Level event 3008 (`LevelEventHandler`): the finished block's sound
+    /// and break particles.
+    pub(super) fn brush_complete_event(&mut self, pos: [i32; 3], data: i32) {
+        let state = horizon_world::registry::BlockStateId(data as u32);
+        let sound = match &*self.res.facts().get(state).name {
+            "minecraft:suspicious_sand" => "minecraft:item.brush.brushing.sand.complete",
+            "minecraft:suspicious_gravel" => "minecraft:item.brush.brushing.gravel.complete",
+            _ => "",
+        };
+        if !sound.is_empty() {
+            let at = pos.map(|v| f64::from(v) + 0.5);
+            // Each client plays it from the event itself.
+            self.audio.play_unshared(sound, Some(at), 1.0, 1.0);
+        }
+        self.destroy_particles(pos, state);
+    }
+}
@@ -2,8 +2,60 @@
 //! shovels) put on a lit campfire puts it out.
 use super::Game;
 use horizon_client::{Result, animate_tick::make_campfire_smoke, items::ItemStack};
+use horizon_core::position::BlockPos;
+use horizon_world::chunk::BlockState;
+use winit::keyboard::KeyCode;

 impl Game<'_> {
+    /// The lit campfire at `pos` that `held` puts out, when the item is in
+    /// `#minecraft:douses_campfires` (`CampfireBlock.useItemOn`).
+    fn campfire_to_douse(&self, pos: [i32; 3], held: Option<&ItemStack>) -> Option<BlockState> {
+        held.filter(|s| {
+            self.res
+                .items()
+                .item_tags
+                .get("minecraft:douses_campfires")
+                .is_some_and(|members| members.contains(&*s.item))
+        })?;
+        self.pack
+            .assets
+            .registry
+            .state(self.world.block(pos[0], pos[1], pos[2]))
+            .filter(|s| matches!(&*s.name, "minecraft:campfire" | "minecraft:soul_campfire"))
+            .filter(|s| s.properties.get("lit").map(String::as_str) == Some("true"))
+            .cloned()
+    }
+
+    /// `CampfireBlock.useItemOn` as this client runs it before the server's
+    /// answer (`MultiPlayerGameMode.useItemOn`): the twenty smoke puffs of
+    /// `CampfireBlock.douse` and the campfire gone out, kept as predicted
+    /// under `seq`. The level event's sound comes from the server. True when
+    /// it doused (SUCCESS), which ends the click for both hands.
+    pub(super) fn predict_campfire_douse(
+        &mut self,
+        pos: [i32; 3],
+        held: Option<&ItemStack>,
+        seq: i32,
+    ) -> bool {
+        // Player.isSecondaryUseActive: a held item means both hands count.
+        if self.keys.contains(&KeyCode::ShiftLeft) {
+            return false;
+        }
+        let Some(mut state) = self.campfire_to_douse(pos, held) else {
+            return false;
+        };
+        let signal = state.properties.get("signal_fire").map(String::as_str) == Some("true");
+        for _ in 0..20 {
+            make_campfire_smoke(&mut self.particles, pos, signal, true);
+        }
+        state.properties.insert("lit".into(), "false".into());
+        if let Ok(unlit) = self.pack.assets.registry.resolve(&state) {
+            let at = BlockPos::new(pos[0], pos[1], pos[2]);
+            self.predict_blocks(&vec![(at, unlit)], seq);
+        }
+        true
+    }
+
    /// `CampfireBlock.useItemOn` with `held` in the hand that acts, the block
    /// at `pos` clicked: true when it doused a lit campfire (SUCCESS).
    pub(super) fn use_campfire_douse(
@@ -11,24 +63,11 @@ impl Game<'_> {
        pos: [i32; 3],
        held: Option<&ItemStack>,
    ) -> Result<bool> {
-        let Some(tool) = held.filter(|s| {
-            self.res
-                .items()
-                .item_tags
-                .get("minecraft:douses_campfires")
-                .is_some_and(|members| members.contains(&*s.item))
-        }) else {
-            return Ok(false);
-        };
-        let registry = self.pack.assets.registry;
-        let Some(mut state) = registry
-            .state(self.world.block(pos[0], pos[1], pos[2]))
-            .filter(|s| matches!(&*s.name, "minecraft:campfire" | "minecraft:soul_campfire"))
-            .filter(|s| s.properties.get("lit").map(String::as_str) == Some("true"))
-            .cloned()
+        let (Some(used), Some(mut state)) = (held.cloned(), self.campfire_to_douse(pos, held))
        else {
            return Ok(false);
        };
+        let registry = self.pack.assets.registry;
        // Level event 1009 (SOUND_EXTINGUISH_FIRE) goes to every player.
        self.level_event_at(1009, pos, 0);
        // CampfireBlock.douse: the acting client's own smoke (twenty puffs),
@@ -44,7 +83,6 @@ impl Game<'_> {
        if let Ok(unlit) = registry.resolve(&state) {
            self.level_set(pos, unlit)?;
        }
-        let used = tool.clone();
        self.damage_held(1);
        // ServerPlayerGameMode.useItemOn: the action was consumed.
        self.trigger_block("minecraft:item_used_on_block", pos, &used);
@@ -81,6 +81,8 @@ pub struct UiState {
    pub chat_screen: Option<ChatScreen>,
    /// When the chat screen opened (its input took the focus: the cursor blink).
    pub chat_opened: Option<std::time::Instant>,
+    /// The chat screen is `InBedChatScreen`: the sleeper's, with a Leave Bed button.
+    pub in_bed_chat: bool,
    pub registries: Registries,
    pub rules: GameRules,
    pub clock: WorldClock,
@@ -102,6 +104,9 @@ pub struct UiState {
    /// Death screen cause and when the player died (buttons wait 20 ticks).
    pub death_text: Option<Text>,
    pub died_at: Option<std::time::Instant>,
+    /// `DeathScreen.TitleConfirmScreen` and when it opened (its buttons wait
+    /// 20 ticks, `setDelay`).
+    pub death_confirm: Option<std::time::Instant>,
    /// `LivingEntity.deathTime` of the window's player: ticks since it died.
    pub death_time: u32,
 }
@@ -452,6 +457,12 @@ impl Game<'_> {
        self.capture(false);
    }
    pub(super) fn close_chat(&mut self) {
+        // InBedChatScreen.onClose: leaving the screen means getting up; the
+        // screen goes once the player has woken (`tick_in_bed_chat`).
+        if self.ui.in_bed_chat && self.sleeping.is_some() {
+            self.wake_up();
+            return;
+        }
        self.ui.chat_screen = None;
        self.ui.chat.reset_scroll();
        if self.screen == Screen::Chat {
@@ -459,6 +470,35 @@ impl Game<'_> {
            self.capture(true);
        }
    }
+    /// `Gui.tick`: a sleeper gets `InBedChatScreen`; when the player has
+    /// woken (`onPlayerWokeUp`) it closes, or turns into the plain chat
+    /// screen if something was typed.
+    pub(super) fn tick_in_bed_chat(&mut self) {
+        if self.screen != Screen::Chat {
+            self.ui.in_bed_chat = false;
+        }
+        if self.ui.in_bed_chat {
+            if self.sleeping.is_none() {
+                self.ui.in_bed_chat = false;
+                let text = self
+                    .ui
+                    .chat_screen
+                    .as_ref()
+                    .map_or_else(String::new, |s| s.value().to_owned());
+                self.close_chat();
+                if !text.is_empty() {
+                    self.open_chat(&text);
+                }
+            }
+        } else if self.sleeping.is_some() && self.screen == Screen::Playing {
+            self.open_chat("");
+            self.ui.in_bed_chat = self.screen == Screen::Chat;
+        }
+    }
+    /// The Leave Bed button of `InBedChatScreen`: its bounds.
+    fn leave_bed_button(width: f32, height: f32) -> (i32, i32, i32, i32) {
+        (width as i32 / 2 - 100, height as i32 - 40, 200, 20)
+    }
    /// `Minecraft.computeChatAbilities` from the Chat option.
    pub(super) fn chat_abilities(&self) -> ChatAbilities {
        ChatAbilities::new(ChatVisibility::from_option(self.settings.chat_visibility))
@@ -571,7 +611,15 @@ impl Game<'_> {
        match screen.key(&m, &c, &self.ui.chat.recent, key, shift, ctrl) {
            ChatAction::Close => self.close_chat(),
            ChatAction::Submit(message) => {
-                self.close_chat();
+                // InBedChatScreen sends without closing (`closeOnSubmit` is
+                // false): the box empties and the screen stays.
+                if self.ui.in_bed_chat && self.sleeping.is_some() {
+                    screen.suggest_command(&m, &c, "");
+                    self.ui.chat.reset_scroll();
+                    self.ui.chat_screen = Some(screen);
+                } else {
+                    self.close_chat();
+                }
                if !message.is_empty() {
                    self.handle_chat_input(&message);
                }
@@ -673,7 +721,8 @@ impl Game<'_> {
        {
            return;
        }
-        let shift = self.keys.contains(&KeyCode::ShiftLeft);
+        // ChatScreen.mouseScrolled: `hasShiftDown`, either Shift key.
+        let shift = self.has_shift_down();
        let amount = amount.clamp(-1.0, 1.0) * if shift { 1.0 } else { 7.0 };
        self.ui.chat.scroll_by(amount as i32, true);
    }
@@ -687,6 +736,16 @@ impl Game<'_> {
            dispatcher: chat_tree(&self.remote, &self.mods),
            registries: &self.ui.registries,
        };
+        if self.ui.in_bed_chat && self.sleeping.is_some() {
+            let width = self.renderer.as_ref().map_or(1280.0, |r| {
+                HudBatch::new([r.config.width, r.config.height]).width
+            });
+            let (x, y, w, h) = Self::leave_bed_button(width, height);
+            if horizon_client::screen_draw::inside((cursor.0 as i32, cursor.1 as i32), x, y, w, h) {
+                self.wake_up();
+                return;
+            }
+        }
        if let Some(screen) = self.ui.chat_screen.as_mut() {
            if screen.click(&m, &c, cursor.0 as f64, cursor.1 as f64) {
                return;
@@ -694,12 +753,25 @@ impl Game<'_> {
        } else {
            return;
        }
-        match self.ui.chat.click_at(
+        let Some(style) = self.ui.chat.style_at(
            &self.gui.atlas.font,
            height as i32,
            cursor.0 as f64,
            cursor.1 as f64,
-        ) {
+        ) else {
+            return;
+        };
+        // ChatScreen.handleComponentClicked: with Shift held only an
+        // insertion acts, else only the click event.
+        if self.has_shift_down() {
+            if let Some(insertion) = style.insertion
+                && let Some(screen) = self.ui.chat_screen.as_mut()
+            {
+                screen.type_text(&m, &c, &insertion);
+            }
+            return;
+        }
+        match style.click {
            Some(ClickEvent::CopyToClipboard(value)) => {
                use horizon_client::clipboard::Clipboard;
                self.clipboard.set(&value);
@@ -713,6 +785,7 @@ impl Game<'_> {
                    screen.suggest_command(&m, &c, &command);
                }
            }
+            Some(ClickEvent::RunCommand(command)) => self.click_command(&command),
            // Screen.defaultHandleClickEvent: a page link means nothing in chat.
            Some(ClickEvent::ChangePage(_)) | None => {}
        }
@@ -781,6 +854,22 @@ impl Game<'_> {
            self.answer_link_prompt(yes);
        }
    }
+    /// `Screen.clickCommandAction`: run a clicked command as the player
+    /// without adding it to the chat history. A client mod's command goes
+    /// first, as `ClientPacketListener.sendUnattendedCommand` lets client
+    /// commands take it. (Vanilla asks first when the command fails to
+    /// parse; here the server answers it.)
+    pub(super) fn click_command(&mut self, command: &str) {
+        let command = command.strip_prefix('/').unwrap_or(command);
+        if self.mod_command(command) {
+            return;
+        }
+        if self.remote.is_some() {
+            self.send_chat(&format!("/{command}"));
+        } else if !self.local_server_mod_command(command) {
+            self.run_command(command);
+        }
+    }
    /// Chat lines over the HUD (focused while the chat screen is open).
    pub(super) fn draw_chat(&mut self, batch: &mut HudBatch) {
        let focused = self.screen == Screen::Chat;
@@ -815,17 +904,59 @@ impl Game<'_> {
        let draws = screen.draw(&m, mouse, blink, background);
        horizon_client::screen_draw::paint(batch, &self.gui.atlas, &draws);
        self.ui.chat_screen = Some(screen);
-        // The hovered message part's tooltip, one row per line of its text.
-        if let Some(hover) = self.ui.chat.hover_at(
-            &self.gui.atlas.font,
-            batch.height as i32,
-            f64::from(self.cursor.0),
-            f64::from(self.cursor.1),
-        ) {
-            let lines = hover_rows(&hover);
+        if self.ui.in_bed_chat && self.sleeping.is_some() {
+            let (x, y, w, h) = Self::leave_bed_button(batch.width, batch.height);
+            let label = Text::literal(horizon_client::lang::get_or(
+                "multiplayer.stopSleeping",
+                "Leave Bed",
+            ));
+            let mut button = Vec::new();
+            horizon_client::screen_draw::button(
+                &mut button,
+                &m,
+                &label,
+                x,
+                y,
+                w,
+                h,
+                true,
+                horizon_client::screen_draw::inside(mouse, x, y, w, h),
+            );
+            horizon_client::screen_draw::paint(batch, &self.gui.atlas, &button);
+        }
+        // The hovered message part's tooltip (`renderComponentHoverEffect`),
+        // or the text of the message tag under the cursor.
+        let height = batch.height as i32;
+        let (cx, cy) = (f64::from(self.cursor.0), f64::from(self.cursor.1));
+        let wrap = (batch.width as i32 / 2).max(200);
+        if let Some(style) = self.ui.chat.style_at(&self.gui.atlas.font, height, cx, cy) {
+            if let Some(hover) = style.hover {
+                let lines = self.wrapped_rows(&hover, wrap);
+                self.draw_tooltip_lines(batch, &lines, self.cursor.0, self.cursor.1);
+            } else if let Some(stack) = style
+                .hover_item
+                .as_deref()
+                .and_then(horizon_client::item_data::stack_from_hover)
+                .filter(|s| self.res.items().get(&s.item).is_some())
+            {
+                self.draw_stack_tooltip(batch, &stack, self.cursor.0, self.cursor.1);
+            }
+        } else if self.ui.chat.indicator_at(height, cx, cy) {
+            // GuiMessageTag.systemSinglePlayer's text, split at 210.
+            let tag = Text::translate("chat.tag.system_single_player", &[]);
+            let lines = self.wrapped_rows(&tag, 210);
            self.draw_tooltip_lines(batch, &lines, self.cursor.0, self.cursor.1);
        }
    }
+    /// `Font.split`: a tooltip text wrapped at `width`, one white row per line.
+    fn wrapped_rows(&self, text: &Text, width: i32) -> Vec<(Text, u32)> {
+        let split = self
+            .gui
+            .atlas
+            .font
+            .split(&text.resolve_legacy(), width as f32);
+        split.into_iter().map(|row| (row, u32::MAX)).collect()
+    }
    /// Advance the overworld clock (ServerClockManager.tick) when
    /// `advance_time` allows it.
    pub(super) fn advance_clock(&mut self) {
@@ -970,6 +1101,7 @@ impl Game<'_> {
        let cause = self.ui.death_cause.take();
        self.ui.died_at = Some(std::time::Instant::now());
        self.ui.death_text = None;
+        self.ui.death_confirm = None;
        if !self.ui.rules.bool("show_death_messages") {
            return;
        }
@@ -1078,26 +1210,3 @@ pub fn screenshot_name(dir: &std::path::Path) -> String {
 fn owner_permission(allow_commands: bool) -> u8 {
    if allow_commands { 4 } else { 0 }
 }
-
-/// A hover text's rows for the tooltip: split at line breaks, each in the
-/// colour of its first styled character (white without one).
-fn hover_rows(hover: &horizon_client::text::Text) -> Vec<(String, u32)> {
-    let mut rows = vec![(String::new(), None)];
-    for (c, style) in hover.resolve_legacy().chars() {
-        if c == '\n' {
-            rows.push((String::new(), None));
-            continue;
-        }
-        let row = rows.last_mut().expect("one row");
-        if row.0.is_empty() {
-            row.1 = style.color;
-        }
-        row.0.push(c);
-    }
-    rows.into_iter()
-        .map(|(text, color)| {
-            let [_, r, g, b] = color.unwrap_or(0xFF_FFFF).to_be_bytes();
-            (text, horizon_client::hud::rgba(r, g, b, 255))
-        })
-        .collect()
-}
@@ -42,6 +42,10 @@ pub(super) struct CombatTracker {
    /// The projectile hitting the player now is another player's that
    /// `ServerPlayer.canHarmPlayer` refuses (the `pvp` rule, an ally).
    pub(super) refuse_player_hit: bool,
+    /// The player whose melee hit is landing on the player now: where they
+    /// stand and the seconds their weapon disables a shield for
+    /// (`getSecondsToDisableBlocking`).
+    pub(super) player_attacker: Option<([f64; 3], f32)>,
    /// The mob exploding now (`ServerExplosion.source`): its team's friendly
    /// fire decides whom the blast may hurt.
    pub(super) explosion_source: Option<u32>,
@@ -1162,6 +1162,17 @@ impl Game<'_> {
        // An air stack is empty: nothing is given (but the message still is).
        let empty = id == "minecraft:air";
        for &t in targets.iter().filter(|_| !empty) {
+            // The player's UUID, which an item they could not hold is set to.
+            let conn = match t {
+                Target::Guest(conn) => Some(conn),
+                _ => self.lan_acting,
+            };
+            let uuid = match conn {
+                Some(conn) => self
+                    .command_guest(conn)
+                    .map(|g| horizon_client::lan::playerdata::uuid_ints(g.uuid)),
+                None => Some(self.level.ensure_player_uuid()),
+            };
            self.for_player(t, |g| {
                let mut remaining = count;
                while remaining > 0 {
@@ -1178,8 +1189,19 @@ impl Game<'_> {
                        .target_position(Target::Player)
                        .unwrap_or(g.source_position());
                    if let Some(rest) = left {
-                        // Inventory full: drop the rest at the player's feet without pickup delay.
-                        g.spawn_item(rest, [p[0], p[1] + 1.32, p[2]], [0.0, 0.0, 0.0], 0);
+                        // Inventory full: Player.createItemStackToDrop (thrown from
+                        // the eyes), then setNoPickUpDelay and setTarget(player).
+                        let eye = g.eye_position().unwrap_or([
+                            p[0],
+                            p[1] + g.target_eye_height(Target::Player),
+                            p[2],
+                        ]);
+                        g.throw_from_eyes(rest, eye, false);
+                        if let Some(item) = g.dropped.last_mut() {
+                            item.thrower = None;
+                            item.pickup_delay = 0;
+                            item.target = uuid;
+                        }
                    } else {
                        let r = &mut g.world.random;
                        let pitch = ((r.next_float() - r.next_float()) * 0.7 + 1.0) * 2.0;
@@ -1447,7 +1469,7 @@ impl Game<'_> {
        {
            return Err(err("commands.teleport.invalidPosition", &[]));
        }
-        let mut rotation = match ctx.get("rotation") {
+        let rotation = match ctx.get("rotation") {
            Some(Arg::Coords(c)) => Some(c.rotation(self.source_rotation())),
            _ => None,
        };
@@ -1462,21 +1484,31 @@ impl Game<'_> {
            (Some(f), _) => Some(f),
            (None, Some(_)) => {
                let e = self.entities(ctx, "facingEntity", false)?[0];
+                // EntityAnchorArgument.Anchor.apply: the feet, or the eyes.
                let eyes = matches!(ctx.get("facingAnchor"), Some(Arg::Anchor(true)));
+                let eye_height = if eyes { self.target_eye_height(e) } else { 0.0 };
                self.target_position(e)
-                    .map(|p| [p[0], p[1] + if eyes { 1.62 } else { 0.0 }, p[2]])
+                    .map(|p| [p[0], p[1] + eye_height, p[2]])
            }
            _ => None,
        };
-        if let Some(f) = facing {
-            let eye = pos[1] + 1.62;
+        // Entity.lookAt: from the source's anchor (the feet, unless `anchored
+        // eyes`) on the teleported entity, so the eyes depend on the target.
+        let anchored_eyes = self.command_source.is_some_and(|s| s.eyes);
+        let look_at = |this: &Self, t: Target| {
+            let f = facing?;
+            let eye = if anchored_eyes {
+                pos[1] + this.target_eye_height(t)
+            } else {
+                pos[1]
+            };
            let (dx, dy, dz) = (f[0] - pos[0], f[1] - eye, f[2] - pos[2]);
            let horizontal = (dx * dx + dz * dz).sqrt();
-            rotation = Some([
+            Some([
                ((dz.atan2(dx).to_degrees()) - 90.0) as f32,
                (-(dy.atan2(horizontal).to_degrees())) as f32,
-            ]);
-        }
+            ])
+        };
        // A server's player in another level than the source's (`execute
        // in`, the console's Overworld) moves there (ServerPlayer.teleport
        // into another level), after the command.
@@ -1486,6 +1518,7 @@ impl Game<'_> {
            None => self.dim,
        };
        for &t in &targets {
+            let rotation = look_at(self, t).or(rotation);
            if self.teleport_across(t, source_level, pos, rotation) {
                continue;
            }
@@ -2210,7 +2243,8 @@ impl Game<'_> {
        let dmax = [dest[0] + size[0], dest[1] + size[1], dest[2] + size[2]];
        let overlap = (0..3).all(|i| dest[i] <= max[i] && dmax[i] >= min[i]);
        let moving = ctx.has("move");
-        if !ctx.has("force") && overlap {
+        // Mode.canOverlap: only the normal mode refuses overlapping regions.
+        if !ctx.has("force") && !moving && overlap {
            return Err(err("commands.clone.overlap", &[]));
        }
        let area = (0..3).map(|i| i64::from(size[i] + 1)).product::<i64>();
@@ -2419,26 +2453,54 @@ impl Game<'_> {
        let levels = ctx.has("levels");
        let unit = if levels { "levels" } else { "points" };
        if ctx.has("query") {
-            let _ = self.entities(ctx, "target", true)?;
-            let e = &self.experience;
-            let value = if levels {
-                e.level
-            } else {
-                (e.progress * horizon_client::entities::Experience::needed(e.level) as f32) as i32
-            };
+            let target = self.entities(ctx, "target", true)?[0];
+            // ExperienceCommand.queryExperience: the target's own level or points.
+            let value = self
+                .for_player(target, |g| {
+                    let e = &g.experience;
+                    if levels {
+                        e.level
+                    } else {
+                        (e.progress * horizon_client::entities::Experience::needed(e.level) as f32)
+                            as i32
+                    }
+                })
+                .unwrap_or(0);
            self.system_message(Text::translate(
                &format!("commands.experience.query.{unit}"),
-                &[
-                    Text::literal(self.acting_player_name()),
-                    Text::literal(value.to_string()),
-                ],
+                &[self.target_name(target), Text::literal(value.to_string())],
            ));
            return Ok(value);
        }
        let targets = self.entities(ctx, "target", true)?;
        let amount = Self::int(ctx, "amount").unwrap_or(0);
-        let op = if ctx.has("add") { "add" } else { "set" };
-        if op == "add" {
+        let add = ctx.has("add");
+        let op = if add { "add" } else { "set" };
+        // Every target changes (a set of points can be refused for some).
+        let changed: Vec<Target> = targets
+            .iter()
+            .copied()
+            .filter(|&t| {
+                self.for_player(t, |g| g.change_experience(add, levels, amount)) == Some(true)
+            })
+            .collect();
+        if changed.is_empty() {
+            return Err(err("commands.experience.set.points.invalid", &[]));
+        }
+        let (key, who) = match changed[..] {
+            [only] => ("single", self.target_name(only)),
+            _ => ("multiple", Text::literal(changed.len().to_string())),
+        };
+        self.feedback(Text::translate(
+            &format!("commands.experience.{op}.{unit}.success.{key}"),
+            &[Text::literal(amount.to_string()), who],
+        ));
+        Ok(changed.len() as i32)
+    }
+    /// ExperienceCommand's add and set on the player in place: false when
+    /// the points to set do not fit the level.
+    fn change_experience(&mut self, add: bool, levels: bool, amount: i32) -> bool {
+        if add {
            if levels {
                self.experience.level = (self.experience.level + amount).max(0);
                if self.experience.level == 0 && amount < 0 {
@@ -2452,26 +2514,11 @@ impl Game<'_> {
        } else {
            let needed = horizon_client::entities::Experience::needed(self.experience.level);
            if amount > needed - 1 {
-                return Err(err("commands.experience.set.points.invalid", &[]));
+                return false;
            }
            self.experience.progress = amount as f32 / needed as f32;
        }
-        let key = format!(
-            "commands.experience.{op}.{unit}.success.{}",
-            if targets.len() == 1 {
-                "single"
-            } else {
-                "multiple"
-            }
-        );
-        self.feedback(Text::translate(
-            &key,
-            &[
-                Text::literal(amount.to_string()),
-                Text::literal(self.acting_player_name()),
-            ],
-        ));
-        Ok(targets.len() as i32)
+        true
    }
    fn cmd_gamerule(&mut self, ctx: &Context) -> R<i32> {
        let Some(name) = ctx.literals.get(1).cloned() else {
@@ -2556,21 +2603,26 @@ impl Game<'_> {
        };
        let yaw = ((rot[0] + 180.0).rem_euclid(360.0)) - 180.0;
        let pitch = rot[1].clamp(-90.0, 90.0);
-        // SetSpawnCommand: a forced point in the source's level.
-        if self.dim == Dim::Overworld {
-            self.spawn = Some(Vec3::new(
-                f64::from(pos[0]) + 0.5,
-                f64::from(pos[1]),
-                f64::from(pos[2]) + 0.5,
-            ));
-            self.respawn_config = None;
-        } else {
-            self.spawn = None;
-            self.respawn_config = Some(super::respawn_anchor::RespawnConfig {
-                dim: self.dim,
-                pos,
-                yaw,
-                forced: true,
+        // SetSpawnCommand: a forced point in the source's level, for each target.
+        let level = self.dim;
+        for &t in &targets {
+            self.for_player(t, |g| {
+                if level == Dim::Overworld {
+                    g.spawn = Some(Vec3::new(
+                        f64::from(pos[0]) + 0.5,
+                        f64::from(pos[1]),
+                        f64::from(pos[2]) + 0.5,
+                    ));
+                    g.respawn_config = None;
+                } else {
+                    g.spawn = None;
+                    g.respawn_config = Some(super::respawn_anchor::RespawnConfig {
+                        dim: level,
+                        pos,
+                        yaw,
+                        forced: true,
+                    });
+                }
            });
        }
        let dim = Text::literal(self.dim.id());
@@ -2750,6 +2802,44 @@ impl Game<'_> {
            },
        };
        let max = Self::int(ctx, "maxCount").unwrap_or(-1);
+        let counting = max == 0;
+        // ClearInventoryCommands.clearInventory: each player on their own.
+        let mut removed = 0i32;
+        let mut found = Vec::new();
+        for &t in &targets {
+            let n = self
+                .for_player(t, |g| g.clear_matching(&predicate, max))
+                .unwrap_or(0);
+            removed += n;
+            if n != 0 {
+                found.push(t);
+            }
+        }
+        if removed == 0 {
+            return Err(if targets.len() == 1 {
+                CommandError::new(Text::translate(
+                    "clear.failed.single",
+                    &[self.target_name(targets[0])],
+                ))
+            } else {
+                err("clear.failed.multiple", &[&targets.len()])
+            });
+        }
+        let kind = if counting { "test" } else { "success" };
+        let (key, who) = match found[..] {
+            [only] => ("single", self.target_name(only)),
+            _ => ("multiple", Text::literal(found.len().to_string())),
+        };
+        self.feedback(Text::translate(
+            &format!("commands.clear.{kind}.{key}"),
+            &[Text::literal(removed.to_string()), who],
+        ));
+        Ok(removed)
+    }
+    /// Inventory.clearOrCountMatchingItems for the player in place: `max`
+    /// of the matching items go (all when negative, none and only counted
+    /// when 0). Returns how many matched.
+    fn clear_matching(&mut self, predicate: &ItemInput, max: i32) -> i32 {
        let counting = max == 0;
        // Inventory slots 0..40: main, armor feet to head, off hand;
        // then clearOrCountMatchingItems visits the crafting grid and carried stack.
@@ -2765,10 +2855,7 @@ impl Game<'_> {
        };
        let matching: Vec<bool> = all(self)
            .iter()
-            .map(|s| {
-                s.as_ref()
-                    .is_some_and(|s| self.stack_matches(&predicate, s))
-            })
+            .map(|s| s.as_ref().is_some_and(|s| self.stack_matches(predicate, s)))
            .collect();
        let mut slots: Vec<&mut Option<ItemStack>> = Vec::new();
        slots.extend(self.inventory.iter_mut());
@@ -2798,25 +2885,7 @@ impl Game<'_> {
                }
            }
        }
-        if removed == 0 {
-            return Err(if targets.len() == 1 {
-                CommandError::new(Text::translate(
-                    "clear.failed.single",
-                    &[Text::literal(self.acting_player_name())],
-                ))
-            } else {
-                err("clear.failed.multiple", &[&targets.len()])
-            });
-        }
-        let kind = if counting { "test" } else { "success" };
-        self.feedback(Text::translate(
-            &format!("commands.clear.{kind}.single"),
-            &[
-                Text::literal(removed.to_string()),
-                Text::literal(self.acting_player_name()),
-            ],
-        ));
-        Ok(removed)
+        removed
    }
    /// `PoiTypes`: the point of interest type of a block state.
    fn poi_type(&self, state: horizon_world::registry::BlockStateId) -> Option<&'static str> {
@@ -227,7 +227,7 @@ impl Game<'_> {
    }

    /// Whether the level in place has a running task, which the server pumps
-    /// between its ticks (`pump_pregen`).
+    /// between its ticks (`pump_chunks`).
    pub(in crate::game) fn pregen_runs_here(&self) -> bool {
        self.cmds
            .pregen
@@ -243,11 +243,19 @@ impl Game<'_> {
    /// Keep the workers fed until `until`: collect what they finished and
    /// hand them the next jobs as soon as each one is done, rather than once
    /// a tick.
-    pub(in crate::game) fn pump_pregen(&mut self, until: Instant) {
+    pub(in crate::game) fn pump_chunks(&mut self, until: Instant, paused: bool) {
        // Force-loaded chunks too: decorating in vanilla's order, a chunk
        // waits for its neighbours far more often than once a tick allows.
+        // And the players' chunks while they load, as vanilla's server runs
+        // its chunk tasks while it waits for the next tick
+        // (`MinecraftServer.waitUntilNextTick`): once a tick, a few jobs per
+        // worker (`schedule_generation`) capped joining a world at about 120
+        // columns a second with two workers, the workers idle most of the
+        // time. Not while a respawn search waits for a chunk: its area is
+        // only asked for by the tick's own `update_world`.
+        let players = !paused && self.spawn_wait.is_empty();
        while self.pregen_runs_here()
-            || (!self.streaming.forced.is_empty() && self.streaming.busy())
+            || ((players || !self.streaming.forced.is_empty()) && self.streaming.busy())
        {
            let now = Instant::now();
            if now >= until {
@@ -105,6 +105,7 @@ impl Game<'_> {
        match ty.trim_start_matches("minecraft:") {
            "player_attack" => DamageKind::PlayerAttack,
            "mace_smash" => DamageKind::MaceSmash,
+            "spear" => DamageKind::Spear,
            "mob_attack" | "mob_attack_no_aggro" => DamageKind::MobAttack,
            "arrow" => DamageKind::Arrow,
            "thrown" | "trident" | "mob_projectile" => DamageKind::Thrown,
@@ -118,7 +119,8 @@ impl Game<'_> {
            "dry_out" => DamageKind::DryOut,
            "magic" | "indirect_magic" | "dragon_breath" => DamageKind::Magic,
            "sting" => DamageKind::Sting,
-            "cactus" | "sweet_berry_bush" => DamageKind::Cactus,
+            "cactus" => DamageKind::Cactus,
+            "sweet_berry_bush" => DamageKind::SweetBerryBush,
            "freeze" => DamageKind::Freeze,
            "in_wall" => DamageKind::InWall,
            "thorns" => DamageKind::Thorns,
@@ -1219,7 +1221,7 @@ impl Game<'_> {
    /// LivingEntity.stopRiding for a mob: off its vehicle
    /// (Entity.removePassenger), then to where the vehicle lets it out
    /// (LivingEntity.dismountVehicle).
-    fn dismount_mob(&mut self, rider: u32) {
+    pub(in crate::game) fn dismount_mob(&mut self, rider: u32) {
        let Some(i) = self.mobs.iter().position(|m| m.id == rider) else {
            return;
        };
@@ -204,6 +204,64 @@ impl Game<'_> {
        }
    }
    // ---- interactions -----------------------------------------------------
+    /// `WeatheringCopperGolemStatueBlock.useItemOn`: an axe on an unoxidized
+    /// statue turns it back into a golem (`CopperGolemStatueBlockEntity.removeStatue`),
+    /// wearing the axe. Weathered statues are scraped by the axe's own
+    /// transform instead.
+    pub(super) fn use_golem_statue(&mut self, pos: [i32; 3], held: Option<&ItemStack>) -> bool {
+        if !held.is_some_and(|s| s.item.ends_with("_axe")) {
+            return false;
+        }
+        let registry = self.pack.assets.registry;
+        let Some(state) = registry.state(self.world.block(pos[0], pos[1], pos[2])) else {
+            return false;
+        };
+        if state.name != "minecraft:copper_golem_statue" {
+            return false;
+        }
+        // `Direction.toYRot` of the statue's facing.
+        let yaw = match state.properties.get("facing").map(String::as_str) {
+            Some("west") => 90.0,
+            Some("north") => 180.0,
+            Some("east") => 270.0,
+            _ => 0.0,
+        };
+        let waterlogged = state
+            .properties
+            .get("waterlogged")
+            .is_some_and(|w| w == "true");
+        // initCopperGolem: at the block's feet, facing as the statue does.
+        let at = [
+            f64::from(pos[0]) + 0.5,
+            f64::from(pos[1]),
+            f64::from(pos[2]) + 0.5,
+        ];
+        let Some(id) = self.spawn_mob("minecraft:copper_golem", at, true) else {
+            return false;
+        };
+        if let Some(m) = self.mobs.iter_mut().find(|m| m.id == id) {
+            m.yaw = yaw;
+            m.previous_yaw = yaw;
+            m.body_yaw = yaw;
+            m.previous_body_yaw = yaw;
+            m.head_yaw = yaw;
+            m.previous_head_yaw = yaw;
+        }
+        self.damage_held(1);
+        self.audio
+            .play("minecraft:entity.copper_golem.spawn", Some(at), 1.0, 1.0);
+        // Level.removeBlock(pos, false): air, or the water the statue stood in.
+        let replacement = registry.default_state(if waterlogged {
+            "minecraft:water"
+        } else {
+            "minecraft:air"
+        });
+        if let Some(replacement) = replacement {
+            let _ = self.level_set(pos, replacement);
+        }
+        self.world.block_entities.remove(&(pos[0], pos[1], pos[2]));
+        true
+    }
    /// `CopperGolem.mobInteract`; true when handled.
    pub(super) fn interact_copper_golem(&mut self, index: usize, item: &str) -> bool {
        if self.mobs[index].species() != Species::CopperGolem || !self.mobs[index].alive() {
@@ -0,0 +1,39 @@
+//! The creative toolbars, `hotbar.nbt` beside `options.txt`: hold the save or
+//! load key and press a hotbar key (`Minecraft.handleKeybinds`).
+use super::Game;
+use horizon_client::{hotbar, keybinds, text::Text};
+
+impl Game<'_> {
+    /// Whether the key bound to `mapping` is held.
+    pub(super) fn mapped_key_down(&self, mapping: &str) -> bool {
+        keybinds::key_code(self.settings.keys.get(mapping))
+            .is_some_and(|k| self.physical_keys.contains(&k))
+    }
+
+    /// `CreativeModeInventoryScreen.handleHotbarLoadOrSave` for the hotbar key
+    /// `index`: load puts the saved row in the hotbar (the creative slot
+    /// packets follow from the inventory change), save stores the hotbar and
+    /// says so on the action bar.
+    pub(super) fn hotbar_load_or_save(&mut self, index: usize, load: bool) {
+        let path = Self::options_path().with_file_name("hotbar.nbt");
+        let known = |id: &str| self.res.items().get(id).is_some();
+        let mut rows = hotbar::load(&path, &known);
+        if load {
+            for (slot, stack) in rows[index].iter().enumerate() {
+                self.inventory[slot] = stack.clone();
+            }
+            return;
+        }
+        rows[index] = self.inventory[..hotbar::SIZE].to_vec();
+        let _ = hotbar::save(&path, &rows);
+        let key = |mapping: &str| keybinds::display_name(self.settings.keys.get(mapping));
+        let message = Text::translate(
+            "inventory.hotbarSaved",
+            &[
+                key("key.loadToolbarActivator"),
+                key(&format!("key.hotbar.{}", index + 1)),
+            ],
+        );
+        self.titles.set_overlay(message, false);
+    }
+}
@@ -21,7 +21,7 @@ use horizon_client::{
    text::Text,
 };
 use horizon_core::{
-    geometry::{Aabb, Vec3, traverse_blocks},
+    geometry::{Aabb, Direction, Vec3, traverse_blocks},
    position::BlockPos,
    random::RandomSource,
 };
@@ -46,9 +46,16 @@ pub(super) struct Creatures {
    pub projectiles: Vec<Projectile>,
    /// Wind bursts from a guest's turn, waiting for it to end (game/wind.rs).
    pub wind_bursts: Vec<super::wind::Burst>,
+    /// The players a fishing hook can catch, taken as the hooks tick, and
+    /// the pulls on them waiting for the hub (game/fishing.rs).
+    pub hook_targets: Vec<super::fishing::HookTarget>,
+    pub hook_pulls: Vec<(u32, horizon_core::geometry::Vec3)>,
    /// Mace smash knockback on the other players from a guest's turn, waiting
    /// for it to end (game/mace.rs).
    pub smash_pushes: Vec<super::mace::SmashPush>,
+    /// Sweep attacks from a guest's turn, waiting for it to end
+    /// (game/lan_pvp.rs).
+    pub sweeps: Vec<super::lan_pvp::Sweep>,
    /// Explosion packets from a guest's turn, waiting for it to end
    /// (centre, small, radius, blocks hit; game/lan_particles.rs).
    pub lan_explosions: Vec<([f64; 3], bool, f32, usize)>,
@@ -56,6 +63,8 @@ pub(super) struct Creatures {
    pub elder_apparition: i32,
    /// The wandering trader spawner's clock.
    pub trader: super::wandering_trader::Spawner,
+    /// When each player last put a parrot on a shoulder (`timeEntitySatOnShoulder`).
+    pub shoulder_time: std::collections::HashMap<[i32; 4], i64>,
    /// The cat spawner's countdown (`CatSpawner.nextTick`).
    pub cat_tick: i32,
    /// Particles from a guest's turn, waiting for it to end
@@ -201,6 +210,7 @@ impl Game<'_> {
            // EntitySelector.NO_CREATIVE_OR_SPECTATOR.
            creative: self.creative || self.spectator(),
            sneaking: self.keys.contains(&winit::keyboard::KeyCode::ShiftLeft),
+            swimming: p.swimming,
            look: view_vector(self.yaw, self.pitch),
            main_hand: self.held().map(|s| s.item.clone()),
            off_hand: None,
@@ -220,6 +230,8 @@ impl Game<'_> {
            uuid: self.level.player_uuid.unwrap_or_default(),
            allies: std::sync::Arc::new(self.player_allies()),
            remote: false,
+            sleeping: self.sleeping.is_some(),
+            sleep_timer: self.sleep_timer,
            passenger: self.riding.is_some(),
        })
    }
@@ -450,9 +462,10 @@ impl Game<'_> {
            teams: std::sync::Arc::new(self.mob_teams()),
            items: Some(self.res.items()),
            lid_openers: &self.lid_openers,
+            // The first player in the level: a server has no player of its own.
            difficulty: self.local_difficulty(
-                self.player
-                    .as_ref()
+                self.level_players()
+                    .first()
                    .map_or([0.0; 3], |p| [p.position.x, p.position.y, p.position.z]),
            ),
        }
@@ -507,6 +520,7 @@ impl Game<'_> {
            self.tick_wandering_trader();
            self.tick_patrol_spawner();
            self.tick_cat_spawner();
+            self.tick_village_siege();
        }
        self.tick_raids();
        self.tick_creature_entities()
@@ -772,11 +786,12 @@ impl Game<'_> {
        let by_player = killer.is_some() || m.ai.last_hurt_by_player > 0;
        let mut dying = m.clone();
        // LivingEntity.die: the death is heard, and a sculk catalyst nearby
-        // takes the experience (before the loot is dropped).
+        // takes the experience (before the loot is dropped). It takes what
+        // would drop, whoever killed the mob.
        self.sculk_mob_died(m);
        let consumed =
            self.catalyst_takes_experience([m.position.x, m.position.y, m.position.z], |_| {
-                if by_player {
+                if horizon_client::mobs::drops::drops_experience(&dying) {
                    horizon_client::mobs::drops::base_experience(&mut dying).max(0) as u32
                } else {
                    0
@@ -936,6 +951,55 @@ impl Game<'_> {
            }
        }
    }
+    /// Melee or ranged damage to another mob; whether the hit landed.
+    fn mob_hits_mob(&mut self, target: u32, amount: f32, source: Damage) -> bool {
+        let mut killed = false;
+        let mut hurt = false;
+        let mut infested = false;
+        if let Some(t) = self.mobs.iter_mut().find(|m| m.id == target) {
+            let hit = t.damage(amount, source);
+            hurt = hit;
+            if hit {
+                killed = !t.alive();
+                // The hurt or death sound the mob raised.
+                let center = t.center();
+                for event in std::mem::take(&mut t.outbox) {
+                    match event {
+                        MobEvent::Sound(s, _, volume, pitch) => {
+                            self.audio
+                                .play(&format!("minecraft:{s}"), Some(center), volume, pitch);
+                        }
+                        MobEvent::Infested { .. } => infested = true,
+                        other => {
+                            // Left for the end of the tick.
+                            t.outbox.push(other);
+                        }
+                    }
+                }
+            }
+        }
+        if infested {
+            self.mob_infested(target);
+        }
+        if hurt
+            && let Some(Who::Mob(attacker)) = source.attacker
+            && let Some(m) = self
+                .mobs
+                .iter()
+                .find(|m| m.id == attacker && m.species() == Species::Axolotl)
+        {
+            self.audio.play(
+                "minecraft:entity.axolotl.attack",
+                Some([m.position.x, m.position.y, m.position.z]),
+                1.0,
+                1.0,
+            );
+        }
+        if killed && let Some(Who::Mob(killer)) = source.attacker {
+            self.zombie_killed(killer, target);
+        }
+        hurt
+    }
    /// `InfestedMobEffect.onMobHurt` for a mob: silverfish from half its height up.
    pub(super) fn mob_infested(&mut self, mob: u32) {
        if let Some(m) = self.mobs.iter().find(|m| m.id == mob) {
@@ -1015,6 +1079,20 @@ impl Game<'_> {
                MobEvent::EntityEvent { mob, event, at } => {
                    self.lan_entity_event(mob as i32, event, at)
                }
+                MobEvent::LevelParticles {
+                    kind,
+                    at,
+                    spread,
+                    speed,
+                    count,
+                } => {
+                    if let Some(ty) = horizon_client::particles::ParticleType::from_name(kind) {
+                        let options = horizon_client::particles::ParticleOptions::simple(ty);
+                        self.particles
+                            .send_particles(&options, at, spread, speed, count);
+                        self.lan_level_particles(&options, at, spread, speed, count);
+                    }
+                }
                MobEvent::Sound(name, at, volume, pitch)
                | MobEvent::LocalSound(name, at, volume, pitch) => {
                    self.audio
@@ -1043,6 +1121,18 @@ impl Game<'_> {
                MobEvent::AttackPlayer(amount, from) => {
                    self.mob_hits_player(amount, from, "minecraft:mob_attack");
                }
+                // doHurtTarget: the effect only when hurtServer took damage.
+                MobEvent::AttackPlayerWithEffect {
+                    amount,
+                    from,
+                    effect,
+                    ticks,
+                    amplifier,
+                } => {
+                    if self.mob_hits_player(amount, from, "minecraft:mob_attack") {
+                        self.give_player_effect(effect, ticks, amplifier);
+                    }
+                }
                MobEvent::DamagePlayer { amount, from, kind } => {
                    self.mob_hits_player(amount, from, kind);
                }
@@ -1141,54 +1231,48 @@ impl Game<'_> {
                    amount,
                    source,
                } => {
-                    let mut killed = false;
-                    let mut hurt = false;
-                    let mut infested = false;
-                    if let Some(t) = self.mobs.iter_mut().find(|m| m.id == target) {
-                        let hit = t.damage(amount, source);
-                        hurt = hit;
-                        if hit {
-                            killed = !t.alive();
-                            // The hurt or death sound the mob raised.
-                            let center = t.center();
-                            for event in std::mem::take(&mut t.outbox) {
-                                match event {
-                                    MobEvent::Sound(s, _, volume, pitch) => {
-                                        self.audio.play(
-                                            &format!("minecraft:{s}"),
-                                            Some(center),
-                                            volume,
-                                            pitch,
-                                        );
-                                    }
-                                    MobEvent::Infested { .. } => infested = true,
-                                    other => {
-                                        // Left for the end of the tick.
-                                        t.outbox.push(other);
-                                    }
-                                }
-                            }
+                    self.mob_hits_mob(target, amount, source);
+                }
+                MobEvent::SonicBoom {
+                    target,
+                    attacker,
+                    from,
+                    direction,
+                } => {
+                    // SonicBoom: the push only follows a hit that landed, scaled
+                    // by the target's KNOCKBACK_RESISTANCE.
+                    let (hurt, resistance) = match target {
+                        Who::Player => {
+                            let hurt = self.mob_hits_player(10.0, from, "minecraft:sonic_boom");
+                            let resistance = self.player.as_mut().map_or(0.0, |p| {
+                                p.attribute("minecraft:knockback_resistance").unwrap_or(0.0)
+                            });
+                            (hurt, resistance)
                        }
-                    }
-                    if infested {
-                        self.mob_infested(target);
-                    }
-                    if hurt
-                        && let Some(Who::Mob(attacker)) = source.attacker
-                        && let Some(m) = self
-                            .mobs
-                            .iter()
-                            .find(|m| m.id == attacker && m.species() == Species::Axolotl)
-                    {
-                        self.audio.play(
-                            "minecraft:entity.axolotl.attack",
-                            Some([m.position.x, m.position.y, m.position.z]),
-                            1.0,
-                            1.0,
-                        );
-                    }
-                    if killed && let Some(Who::Mob(killer)) = source.attacker {
-                        self.zombie_killed(killer, target);
+                        Who::Mob(id) => {
+                            let source = Damage {
+                                kind: DamageKind::SonicBoom,
+                                attacker: Some(Who::Mob(attacker)),
+                                from: Some(from),
+                            };
+                            let hurt = self.mob_hits_mob(id, 10.0, source);
+                            let resistance = self
+                                .mobs
+                                .iter()
+                                .find(|m| m.id == id)
+                                .map_or(0.0, |m| self.mob_knockback_resistance(m));
+                            (hurt, resistance)
+                        }
+                    };
+                    if hurt {
+                        let horizontal = 2.5 * (1.0 - resistance);
+                        let vertical = 0.5 * (1.0 - resistance);
+                        let velocity = [
+                            direction[0] * horizontal,
+                            direction[1] * vertical,
+                            direction[2] * horizontal,
+                        ];
+                        self.handle_mob_events(vec![MobEvent::Push { target, velocity }])?;
                    }
                }
                MobEvent::FinishAdmiring { mob } => self.finish_admiring(mob),
@@ -1218,6 +1302,7 @@ impl Game<'_> {
                }
                MobEvent::BecomeStatue { mob } => self.golem_become_statue(mob),
                MobEvent::EnterHive { mob, hive } => self.bee_enter_hive(mob, hive),
+                MobEvent::ParrotToShoulder { mob } => self.parrot_to_shoulder(mob),
                MobEvent::Infested { mob } => self.mob_infested(mob),
                MobEvent::Gift { target, item } => {
                    if let Some(m) = self.mobs.iter_mut().find(|m| m.id == target)
@@ -1236,6 +1321,14 @@ impl Game<'_> {
                        m.ai.target = Some(target);
                    }
                }
+                MobEvent::HuntHoglin { mob, target, ticks } => {
+                    if let Some(m) = self.mobs.iter_mut().find(|m| m.id == mob) {
+                        m.extra.ints[0] = ticks;
+                        if m.ai.target.is_none() {
+                            m.ai.target = Some(Who::Mob(target));
+                        }
+                    }
+                }
                MobEvent::Projectile(mut p) => {
                    self.next_entity += 1;
                    p.id = self.next_entity;
@@ -1269,6 +1362,22 @@ impl Game<'_> {
                    [0.0, 0.2, 0.0],
                    10,
                ),
+                MobEvent::DropGift { table, at } => {
+                    let stacks =
+                        self.res
+                            .items()
+                            .loot_table(table, false, None, &mut self.world.random);
+                    for stack in stacks {
+                        // The ItemEntity constructor's random motion.
+                        let r = &mut self.world.random;
+                        let v = [
+                            r.next_double() * 0.2 - 0.1,
+                            0.2,
+                            r.next_double() * 0.2 - 0.1,
+                        ];
+                        self.spawn_item(stack, at, v, 10);
+                    }
+                }
                // `Level.setBlockAndUpdate`: neighbour and shape updates, so a crop
                // above trampled farmland breaks and drops.
                MobEvent::SetBlock { pos, state } => self.level_set(pos, state)?,
@@ -1331,8 +1440,50 @@ impl Game<'_> {
                        self.world.set(pos[0], pos[1], pos[2], state)?;
                    }
                }
+                MobEvent::Infest {
+                    pos,
+                    infested,
+                    poof,
+                } => {
+                    let registry = &self.pack.assets.registry;
+                    let old = self.world.block(pos[0], pos[1], pos[2]);
+                    if let Some(mut state) = registry.state(old).cloned() {
+                        let (from, to) = if infested {
+                            ("minecraft:", "minecraft:infested_")
+                        } else {
+                            ("minecraft:infested_", "minecraft:")
+                        };
+                        state.name = state.name.replacen(from, to, 1);
+                        if let Ok(id) = registry.resolve(&state) {
+                            self.world.set(pos[0], pos[1], pos[2], id)?;
+                        }
+                    }
+                    if let Some(mob) = poof {
+                        self.mob_poof(mob);
+                    }
+                }
                MobEvent::BreakBlock { pos, drop } => {
                    let old = self.world.block(pos[0], pos[1], pos[2]);
+                    // InfestedBlock.spawnAfterBreak: its silverfish comes out
+                    // when blocks drop.
+                    if drop
+                        && self
+                            .res
+                            .facts()
+                            .get(old)
+                            .name
+                            .starts_with("minecraft:infested_")
+                        && self.ui.rules.bool("block_drops")
+                    {
+                        let at = [
+                            f64::from(pos[0]) + 0.5,
+                            f64::from(pos[1]),
+                            f64::from(pos[2]) + 0.5,
+                        ];
+                        if let Some(id) = self.spawn_mob("minecraft:silverfish", at, false) {
+                            self.mob_poof(id);
+                        }
+                    }
                    // Block.spawnDestroyParticles: fire breaks leave nothing.
                    if !self.res.facts().get(old).has_class("BaseFireBlock") {
                        self.destroy_particles(pos, old);
@@ -1420,6 +1571,27 @@ impl Game<'_> {
                        .list
                        .retain(|e| e.id != "mining_fatigue");
                }
+                MobEvent::DolphinTreasure { mob } => {
+                    // ServerLevel.findNearestMapStructure(#dolphin_located, 50).
+                    let Some(at) = self.mobs.iter().find(|m| m.id == mob).map(|m| {
+                        [
+                            m.position.x.floor() as i32,
+                            m.position.y.floor() as i32,
+                            m.position.z.floor() as i32,
+                        ]
+                    }) else {
+                        continue;
+                    };
+                    let names = self.structure_tag("minecraft:dolphin_located");
+                    let found = self
+                        .end
+                        .locator()
+                        .filter(|_| !names.is_empty())
+                        .and_then(|t| t.locate(&names, at, 50));
+                    if let Some(m) = self.mobs.iter_mut().find(|m| m.id == mob) {
+                        m.extra.home = found.map(|(_, p)| p);
+                    }
+                }
                MobEvent::EffectPlayer {
                    effect,
                    ticks,
@@ -2344,6 +2516,22 @@ impl Game<'_> {
            8.0,
        )
    }
+    /// `BellBlock.onProjectileHit`: a projectile that strikes the bell proper
+    /// rings it, and a player's shot counts as the player's ring.
+    fn bell_projectile_hit(&mut self, p: &Projectile, pos: [i32; 3], at: Vec3, face: [i32; 3]) {
+        let Some(face) = Direction::ALL.into_iter().find(|d| d.normal() == face) else {
+            return;
+        };
+        let block = BlockPos::new(pos[0], pos[1], pos[2]);
+        let rang = self
+            .with_level(|b, level, ticks| b.bell_projectile_hit(level, ticks, block, face, at.y));
+        if rang {
+            let _ = self.process_level_events();
+            if p.owner == Some(Who::Player) {
+                self.stats.custom("bell_ring", 1);
+            }
+        }
+    }
    /// What an arrow's tick asked for: its particles and sounds.
    fn arrow_event(&mut self, at: Vec3, event: horizon_client::arrows::ArrowEvent) {
        use horizon_client::arrows::{ArrowEvent, ArrowParticle, ArrowSound, BlockReaction};
@@ -2478,14 +2666,36 @@ impl Game<'_> {
        let hit = self.with_level(|b, level, ticks| {
            b.target_projectile_hit(level, ticks, block, location, face, arrow)
        });
-        if hit.is_some() {
+        if let Some(strength) = hit {
            let _ = self.process_level_events();
-            if p.owner == Some(Who::Player) {
+            if p.owner == Some(Who::Player) && (p.guest.is_none() || p.guest == self.lan_acting) {
                self.stats.custom("target_hit", 1);
+                let kind = if p
+                    .arrow
+                    .as_ref()
+                    .is_some_and(|a| &*a.pickup_item.item == "minecraft:spectral_arrow")
+                {
+                    "minecraft:spectral_arrow"
+                } else {
+                    p.kind.id()
+                };
+                let projectile = horizon_client::advancements::EntityView {
+                    kind: kind.to_owned(),
+                    position: [p.position.x, p.position.y, p.position.z],
+                    ..Default::default()
+                };
+                self.trigger_target_hit(&projectile, strength);
            }
        }
    }
    pub(super) fn projectile_hit(&mut self, p: &Projectile, hit: Hit) -> Result<()> {
+        // Projectile.onHitBlock: BlockState.onProjectileHit, for every
+        // projectile (a wind charge out of the world's top has no face).
+        if let Hit::Block { pos, at, face } = hit
+            && face != [0; 3]
+        {
+            self.bell_projectile_hit(p, pos, at, face);
+        }
        self.combat.projectile_owner = match p.owner {
            Some(Who::Mob(id)) => Some(id),
            _ => None,
@@ -2660,6 +2870,17 @@ impl Game<'_> {
                                };
                                self.player_hit(&victim, "minecraft:arrow", Some(direct), amount);
                            }
+                            // AbstractArrow.onHitEntity: KILLED_BY_ARROW for a kill
+                            // (piercing arrows are not modelled).
+                            if hurt
+                                && let Some(m) = self.mobs.iter().find(|m| m.id == id)
+                                && !m.alive()
+                            {
+                                let victim = self.mob_entity(m);
+                                let weapon =
+                                    p.arrow.as_ref().and_then(|a| a.fired_from_weapon.as_ref());
+                                self.trigger_killed_by_arrow(&[victim], weapon);
+                            }
                        }
                        hurt
                    }
@@ -2963,7 +3184,7 @@ impl Game<'_> {
                    if let Some(m) = self.mobs.iter_mut().find(|m| m.id == id)
                        && m.damage(4.0, source)
                    {
-                        m.extra.levitation = 200;
+                        m.add_effect("minecraft:levitation", 200, 0);
                        // Shulker.hurtServer: a shulker hit by a bullet.
                        horizon_client::mobs::shulker::hit_by_bullet(m);
                    }
@@ -3127,6 +3348,10 @@ impl Game<'_> {
            self.swing_arm();
            return Ok(true);
        }
+        if self.interact_shear_mob(index, &item) {
+            self.swing_arm();
+            return Ok(true);
+        }
        // AbstractHorse.mobInteract: feed, equip or ride.
        if self.interact_mount(index, &item) {
            self.swing_arm();
@@ -3151,18 +3376,37 @@ impl Game<'_> {
            .item_tags
            .get("minecraft:creeper_igniters")
            .is_some_and(|t| t.contains(&*item));
+        let fish = self
+            .res
+            .items()
+            .item_tags
+            .get("minecraft:fishes")
+            .is_some_and(|t| t.contains(&*item));
        let damageable = self
            .res
            .items()
            .get(&item)
            .is_some_and(|i| i.max_damage > 0);
+        let parrot_poisonous = self
+            .res
+            .items()
+            .item_tags
+            .get("minecraft:parrot_poisonous_food")
+            .is_some_and(|t| t.contains(&*item));
+        let player_at = self.eye_position();
        let acting = self.acting_player_uuid();
+        let sneaking = self.keys.contains(&winit::keyboard::KeyCode::ShiftLeft)
+            || self.keys.contains(&winit::keyboard::KeyCode::ShiftRight);
+        let held_damage = held.as_ref().map_or(0, |h| h.damage as i32);
+        let held_extra = held.as_ref().and_then(|h| h.extra.clone());
        let m = &mut self.mobs[index];
        if !m.alive() {
            return Ok(false);
        }
        let species = m.species();
        let center = m.center();
+        // Wolf armor the owner takes off with shears or leaves a dropped stack of.
+        let mut armor_drop: Option<ItemStack> = None;
        let mut consume = false;
        let mut give: Option<&str> = None;
        let mut sound: Option<&str> = None;
@@ -3247,6 +3491,23 @@ impl Game<'_> {
                    handled = false;
                }
            }
+            // Entity.interact: shears take a tamed wolf's armor off for its owner.
+            Species::Wolf
+                if item == "minecraft:shears"
+                    && m.extra.tame
+                    && m.extra.owner == Some(acting)
+                    && m.extra.head.is_some()
+                    && !sneaking =>
+            {
+                let mut stack = ItemStack::new("minecraft:wolf_armor", 1);
+                stack.damage = m.extra.body_damage.max(0) as u32;
+                stack.extra = m.extra.body_extra.take();
+                armor_drop = Some(stack);
+                m.extra.head = None;
+                m.extra.body_damage = 0;
+                eat = Some(("item.armor.unequip_wolf", 1.0, 1.0));
+                self.damage_held_tool();
+            }
            // Wolf.mobInteract: heal, dye the collar or sit/stand when tame;
            // a bone tames a wild one a third of the time.
            Species::Wolf if m.extra.tame && is_food && m.health < m.attrs.max_health => {
@@ -3255,11 +3516,42 @@ impl Game<'_> {
                    .items()
                    .get(&item)
                    .and_then(|i| i.food.as_ref())
-                    .map_or(2.0, |f| f.0 as f32);
-                // TamableAnimal.feed: playEatingSound, which wolves leave empty.
+                    .map_or(2.0, |f| f.0 as f32 * 2.0);
+                // TamableAnimal.feed(.., 2.0F, 2.0F): heals twice the nutrition,
+                // then playEatingSound, which wolves leave empty.
                m.health = (m.health + heal).min(m.attrs.max_health);
                consume = true;
            }
+            // Wolf.mobInteract: the owner puts wolf armor on a tamed adult.
+            Species::Wolf
+                if item == "minecraft:wolf_armor"
+                    && m.extra.tame
+                    && m.extra.owner == Some(acting)
+                    && m.extra.head.is_none()
+                    && !m.is_baby() =>
+            {
+                m.extra.head = Some(item.as_str().into());
+                m.extra.body_damage = held_damage;
+                m.extra.body_extra = held_extra;
+                consume = true;
+                eat = Some(("item.armor.equip_wolf", 1.0, 1.0));
+            }
+            // Wolf.mobInteract: an armadillo scute repairs a sitting wolf's
+            // armor by an eighth of its durability.
+            Species::Wolf
+                if item == "minecraft:armadillo_scute"
+                    && m.extra.tame
+                    && m.extra.owner == Some(acting)
+                    && m.extra.sitting
+                    && m.extra.head.is_some()
+                    && m.extra.body_damage > 0 =>
+            {
+                m.extra.body_damage = (m.extra.body_damage
+                    - (horizon_client::mobs::WOLF_ARMOR_DURABILITY as f32 * 0.125) as i32)
+                    .max(0);
+                consume = true;
+                eat = Some(("item.wolf_armor.repair", 1.0, 1.0));
+            }
            Species::Wolf
                if m.extra.tame
                    && m.extra.owner == Some(acting)
@@ -3379,6 +3671,20 @@ impl Game<'_> {
                    m.position.z.floor() as i32 >> 4,
                ));
            }
+            // Parrot.mobInteract: the owner makes a tame parrot on the ground
+            // sit or stand (poisonous food is handled apart).
+            Species::Parrot
+                if m.extra.tame
+                    && m.extra.owner == Some(acting)
+                    && m.on_ground
+                    && !parrot_poisonous =>
+            {
+                m.extra.sitting = !m.extra.sitting;
+                self.world.modified.insert((
+                    m.position.x.floor() as i32 >> 4,
+                    m.position.z.floor() as i32 >> 4,
+                ));
+            }
            Species::Cat if !m.extra.tame && is_food => {
                consume = true;
                m.persistent = true;
@@ -3425,6 +3731,29 @@ impl Game<'_> {
                    consume = true;
                }
            }
+            // Parrot.mobInteract: #parrot_poisonous_food (a cookie) poisons the
+            // parrot for 45 s and then hurts it with a player attack of
+            // Float.MAX_VALUE, which an invulnerable one shrugs off.
+            Species::Parrot
+                if self
+                    .res
+                    .items()
+                    .item_tags
+                    .get("minecraft:parrot_poisonous_food")
+                    .is_some_and(|t| t.contains(&*item)) =>
+            {
+                consume = true;
+                m.add_effect("minecraft:poison", 900, 0);
+                let id = m.id;
+                let hurt = m.damage(
+                    f32::MAX,
+                    horizon_client::mobs::Damage::player(player_at.unwrap_or(center)),
+                );
+                // The feeder gets the kill, as for a normal player attack.
+                if hurt {
+                    self.last_hurt_by_player.insert(id, self.lan_acting);
+                }
+            }
            // Parrot.mobInteract: parrot food may tame a wild one (one time in
            // ten); a parrot never takes it as Animal food (isFood is false).
            Species::Parrot if !m.extra.tame && is_food => {
@@ -3436,7 +3765,7 @@ impl Game<'_> {
                let tamed = m.random.next_int_bound(10).unwrap_or(1) == 0;
                if tamed {
                    m.extra.tame = true;
-                    m.extra.owner = self.level.player_uuid.or(Some([0, 0, 0, 1]));
+                    m.extra.owner = Some(acting);
                }
                // TamableAnimal.spawnTamingParticles (entity event 7 or 6).
                self.mob_event_particles(self.mobs[index].id, if tamed { 7 } else { 6 });
@@ -3445,6 +3774,18 @@ impl Game<'_> {
                    self.trigger_entity("minecraft:tame_animal", "entity", &view);
                }
            }
+            // Dolphin.mobInteract: a fish makes a baby grow by a tenth and an
+            // adult remember it (`gotFish`), to swim to a treasure.
+            Species::Dolphin if fish => {
+                eat = Some(("entity.dolphin.eat", 1.0, 1.0));
+                if m.extra.age < 0 {
+                    let secs = ((-m.extra.age / 20) as f32 * 0.1) as i32;
+                    horizon_client::mobs::ai::age_up(m, secs, true);
+                } else {
+                    m.extra.flag = true;
+                }
+                consume = true;
+            }
            // Tadpole.feed: frog food ages it by a tenth of the time left to
            // grow into a frog (it grows on its next tick once past 24000).
            Species::Tadpole if is_food && !m.extra.age_locked => {
@@ -3458,6 +3799,22 @@ impl Game<'_> {
                    horizon_client::particles::Burst::HORSE_EATING,
                );
            }
+            // Bee.mobInteract: a wither rose or an open eyeblossom is eaten for
+            // its `getBeeInteractionEffect` instead of breeding the bee.
+            Species::Bee
+                if is_food
+                    && matches!(
+                        &*item,
+                        "minecraft:wither_rose" | "minecraft:open_eyeblossom"
+                    ) =>
+            {
+                if &*item == "minecraft:wither_rose" {
+                    m.add_effect("minecraft:wither", 40, 0);
+                } else {
+                    m.add_effect("minecraft:poison", 25, 0);
+                }
+                consume = true;
+            }
            // HappyGhast.canFallInLove: never, so only a ghastling takes food.
            _ if is_food
                && m.kind.flags.animal
@@ -3528,6 +3885,9 @@ impl Game<'_> {
                self.spawn_item(rest, at, [0.0, 0.0, 0.0], 40);
            }
        }
+        if let Some(stack) = armor_drop {
+            self.spawn_item(stack, [center[0], center[1] + 0.5, center[2]], [0.0; 3], 10);
+        }
        for (item, count) in drops {
            for _ in 0..count {
                let v = [
@@ -3550,6 +3910,39 @@ impl Game<'_> {
        }
        Ok(true)
    }
+    /// `SnowGolem.mobInteract` and `Bogged.mobInteract` with shears: the
+    /// pumpkin or the mushrooms come off (the shearing loot table), the shear
+    /// game event is posted and the tool takes one damage.
+    fn interact_shear_mob(&mut self, index: usize, item: &str) -> bool {
+        let m = &self.mobs[index];
+        if item != "minecraft:shears" || !m.alive() || m.extra.sheared {
+            return false;
+        }
+        let (sound, table, height) = match m.species() {
+            Species::SnowGolem => (
+                "minecraft:entity.snow_golem.shear",
+                "minecraft:shearing/snow_golem",
+                m.eye_height(),
+            ),
+            Species::Bogged => (
+                "minecraft:entity.bogged.shear",
+                "minecraft:shearing/bogged",
+                f64::from(m.height()),
+            ),
+            _ => return false,
+        };
+        let at = m.position;
+        let tool = self.held().cloned();
+        self.audio.play(sound, Some([at.x, at.y, at.z]), 1.0, 1.0);
+        self.mobs[index].extra.sheared = true;
+        for stack in self.sequence_loot(table, table, tool.as_ref()) {
+            self.spawn_at_location(at, height, stack);
+        }
+        let ctx = self.who_context(Some(horizon_client::mobs::Who::Player), None);
+        self.post_game_event("minecraft:shear", [at.x, at.y, at.z], ctx);
+        self.damage_held_tool();
+        true
+    }
    /// `Armadillo.mobInteract`: a brush brushes a scute off an adult
    /// (`brushOffScute`) and loses 16 durability.
    fn interact_armadillo(&mut self, index: usize, item: &str) -> bool {
@@ -3898,6 +4291,18 @@ impl Game<'_> {
                &armor,
                out,
            );
+            if &*mob.kind.id == "minecraft:player" {
+                // PlayerRenderer's WingsLayer and SpinAttackEffectLayer.
+                self.player_elytra_geometry(
+                    mob,
+                    mob.extra.chest.as_deref(),
+                    camera,
+                    alpha as f32,
+                    packed,
+                    out,
+                );
+                self.spin_attack_geometry(mob, camera, alpha as f32, packed, out);
+            }
            self.mob_block_geometry(mob, camera, alpha, packed, out);
            if let Some(rgb) = outline {
                self.mark_outline(&out[entity_start..], rgb);
@@ -4132,6 +4537,7 @@ pub(super) fn damage_type(kind: horizon_client::mobs::DamageKind, player: bool)
    match kind {
        K::PlayerAttack => "minecraft:player_attack",
        K::MaceSmash => "minecraft:mace_smash",
+        K::Spear => "minecraft:spear",
        K::MobAttack => "minecraft:mob_attack",
        K::Arrow => "minecraft:arrow",
        K::Thrown => "minecraft:thrown",
@@ -4148,6 +4554,7 @@ pub(super) fn damage_type(kind: horizon_client::mobs::DamageKind, player: bool)
        K::Magic => "minecraft:magic",
        K::Sting => "minecraft:sting",
        K::Cactus => "minecraft:cactus",
+        K::SweetBerryBush => "minecraft:sweet_berry_bush",
        K::Generic => "minecraft:generic",
        K::InWall => "minecraft:in_wall",
        K::Thorns => "minecraft:thorns",
@@ -4172,6 +4579,7 @@ fn to_loot(stack: &ItemStack) -> horizon_world::loot::LootStack {
        exploration: None,
        ominous_amplifier: None,
        stew_effects: Vec::new(),
+        names: Vec::new(),
    }
 }
 /// A generated loot stack as a Horizon item stack.
@@ -4191,6 +4599,9 @@ fn from_loot(stack: &horizon_world::loot::LootStack) -> ItemStack {
    if let Some(amplifier) = stack.ominous_amplifier.filter(|a| *a > 0) {
        item.data_mut().ominous_amplifier = Some(amplifier as u8);
    }
+    for (id, text) in &stack.names {
+        item.data_mut().set_loot_name(id, text);
+    }
    item
 }
 impl Game<'_> {
@@ -4204,13 +4615,10 @@ impl Game<'_> {
            f64::from((pos[0] >> 4) * 16 + 8),
            f64::from((pos[2] >> 4) * 16 + 8),
        ];
-        let spectator = self.spectator();
-        let Some(close) = self.player.as_ref().filter(|_| !spectator).map(|p| {
+        let close = self.level_players().iter().any(|p| {
            let (dx, dz) = (p.position.x - centre[0], p.position.z - centre[1]);
-            dx * dx + dz * dz < 16384.0
-        }) else {
-            return;
-        };
+            !p.spectator && dx * dx + dz * dz < 16384.0
+        });
        if !close {
            return;
        }
@@ -4234,6 +4642,9 @@ impl Game<'_> {
            f64::from(y + 1),
            f64::from(pos[2]) + 0.5,
        ];
-        let _ = self.spawn_mob("minecraft:zombified_piglin", at, false);
+        // setPortalCooldown: the new piglin does not travel at once.
+        if let Some(id) = self.spawn_mob("minecraft:zombified_piglin", at, false) {
+            self.set_portal_cooldown(id);
+        }
    }
 }
@@ -219,6 +219,7 @@ impl Game<'_> {
                if let Some(a) = arrow.arrow.as_mut() {
                    a.set_item(ammo);
                    a.set_owner(Some(Who::Player));
+                    a.fired_from_weapon = Some(weapon.clone());
                    a.pierce = pierce;
                }
                arrow.shoot(&mut self.world.random, dir.to_array(), power, 1.0);
@@ -235,6 +236,11 @@ impl Game<'_> {
                .play("minecraft:item.crossbow.shoot", Some(eye), 1.0, pitch);
            self.damage_held(if rocket { 3 } else { 1 });
        }
+        // CrossbowItem.performShooting: SHOT_CROSSBOW with the crossbow, which
+        // is an empty stack (no match) when the shots broke it.
+        if let Some(stack) = self.held().cloned() {
+            self.trigger_item("minecraft:shot_crossbow", &stack);
+        }
    }
 }

@@ -244,7 +244,8 @@ impl Game<'_> {
                if on { "visible" } else { "hidden" }
            )
        };
-        let remote = self.remote.is_some();
+        // `DebugScreenOverlay`: the single-player variants for a local server.
+        let remote = !self.has_singleplayer_server();
        let c = &self.debug_charts;
        [
            format!(
@@ -463,7 +464,7 @@ impl Game<'_> {
            height,
            self.settings.max_fps,
            1000.0 / self.clock.rate(),
-            self.remote.is_some(),
+            !self.has_singleplayer_server(),
        );
        draws.push(hud_layout::GuiDraw::Push(vec![hud_layout::PoseOp::Scale(
            scale, scale,
@@ -412,6 +412,8 @@ struct ServerState {
    paused: bool,
    /// `broadcast-console-to-ops`.
    broadcast_console: bool,
+    /// `op-permission-level`: what `/op` grants (operatorUserPermissions).
+    op_level: i32,
 }

 /// The dedicated-only commands' replies vanilla sends with `broadcast`
@@ -573,6 +575,14 @@ impl Game<'_> {
        // DedicatedServer.initServer: worldData.setGameType; forceDifficulty.
        self.set_default_game_mode(game_mode);
        self.ui.difficulty = props.difficulty as u8;
+        // DedicatedServer.initServer: a legacy `announce-player-achievements`
+        // sets the show_advancement_messages rule once, as the file is read.
+        if let Some(announce) = props.announce_player_achievements {
+            self.ui.rules.set(
+                "show_advancement_messages",
+                horizon_client::gamerules::Value::Bool(announce),
+            );
+        }
        self.settings.render_distance = props.view_distance.clamp(2, 32);
        self.settings.simulation_distance = props.simulation_distance.clamp(2, 32);
        self.streaming.radius = self.settings.render_distance;
@@ -663,6 +673,9 @@ impl Game<'_> {
            return Ok(());
        }
        self.sync_ops(&lists);
+        if let Some(host) = self.lan.as_mut() {
+            host.hub.spawn_protection = props.spawn_protection;
+        }
        log(
            "INFO",
            &format!(
@@ -685,6 +698,7 @@ impl Game<'_> {
            ticks: Default::default(),
            paused: false,
            broadcast_console: props.broadcast_console_to_ops,
+            op_level: props.op_permission_level,
        };
        let pause_after = props.pause_when_empty_seconds * 20;
        let idle_timeout = props.player_idle_timeout;
@@ -946,7 +960,7 @@ impl Game<'_> {
                let Some(user) = self.resolve(rest[0]) else {
                    return;
                };
-                let level = 4;
+                let level = state.op_level;
                let changed = {
                    let mut l = state.lists.lock().unwrap();
                    if command == "op" {
@@ -972,6 +986,10 @@ impl Game<'_> {
                self.console_reply(Text::translate(key, &[lit(&user.name)]));
                let lists = state.lists.clone();
                self.sync_ops(&lists);
+                // DeOpCommands.deopPlayers.
+                if command == "deop" && changed {
+                    self.kick_unlisted_players(&lists);
+                }
            }
            "whitelist" => self.console_whitelist(state, &rest),
            "ban" if !rest.is_empty() => {
@@ -1183,6 +1201,7 @@ impl Game<'_> {
            ["on"] | ["off"] => {
                let on = rest[0] == "on";
                let mut l = state.lists.lock().unwrap();
+                let turned_on = on && !l.use_whitelist;
                let key = match (on, l.use_whitelist) {
                    (true, true) => "commands.whitelist.alreadyOn",
                    (true, false) => "commands.whitelist.enabled",
@@ -1193,6 +1212,10 @@ impl Game<'_> {
                drop(l);
                self.store_property("white-list", on.to_string());
                self.console_reply(Text::translate(key, &[]));
+                if turned_on {
+                    let lists = state.lists.clone();
+                    self.kick_unlisted_players(&lists);
+                }
            }
            ["list"] => {
                let names: Vec<String> = state
@@ -1216,6 +1239,8 @@ impl Game<'_> {
            ["reload"] => {
                let _ = state.lists.lock().unwrap().white.load();
                self.console_reply(Text::translate("commands.whitelist.reloaded", &[]));
+                let lists = state.lists.clone();
+                self.kick_unlisted_players(&lists);
            }
            ["add", name] | ["remove", name] => {
                let Some(user) = self.resolve(name) else {
@@ -1241,6 +1266,10 @@ impl Game<'_> {
                    Vec::new()
                };
                self.console_reply(Text::translate(key, &args));
+                if ok && rest[0] == "remove" {
+                    let lists = state.lists.clone();
+                    self.kick_unlisted_players(&lists);
+                }
            }
            _ => self.console_reply(Text::translate("command.unknown.argument", &[])),
        }
@@ -1256,6 +1285,38 @@ impl Game<'_> {
        }
    }

+    /// MinecraftServer.kickUnlistedPlayers: with `enforce-whitelist` and the
+    /// whitelist on, whoever is online and not on the whitelist file is
+    /// disconnected (operators are not spared here).
+    fn kick_unlisted_players(&mut self, lists: &Arc<Mutex<Lists>>) {
+        let unlisted: Vec<u128> = {
+            let l = lists.lock().unwrap();
+            let Some(host) = self.lan.as_ref() else {
+                return;
+            };
+            if !(l.enforce_whitelist && l.use_whitelist) {
+                return;
+            }
+            host.hub
+                .guests
+                .iter()
+                .filter(|g| {
+                    !l.white.contains(&NameAndId {
+                        id: g.uuid,
+                        name: g.name.clone(),
+                    })
+                })
+                .map(|g| g.uuid)
+                .collect()
+        };
+        for uuid in unlisted {
+            self.kick_uuid(
+                uuid,
+                translatable("multiplayer.disconnect.not_whitelisted", &[]),
+            );
+        }
+    }
+
    fn kick_uuid(&mut self, uuid: u128, reason: Tag) {
        if let Some(h) = self.lan.as_mut() {
            let conns: Vec<u32> = h
@@ -672,6 +672,7 @@ impl Game<'_> {
        }
        let source = match source.kind {
            horizon_client::mobs::DamageKind::MaceSmash => "minecraft:mace_smash",
+            horizon_client::mobs::DamageKind::Spear => "minecraft:spear",
            _ => "minecraft:player_attack",
        };
        out.push(format!(
@@ -1548,6 +1548,7 @@ impl Game<'_> {
            return Ok((Some(stack), FAIL));
        };
        let target = (placed.x, placed.y, placed.z);
+        let state = self.apply_item_block_state([target.0, target.1, target.2], state, &stack)?;
        if let Some(entity) = BlockEntity::for_block(&self.res.facts().get(state).name) {
            self.world.block_entities.insert(target, entity);
            self.apply_placed_item([target.0, target.1, target.2], &stack, false);
@@ -1122,14 +1122,11 @@ impl Game<'_> {
        if !self.before_block(d) || self.mob_hit().is_some_and(|m| m.1 < d) {
            return false;
        }
-        let modifiers = self
-            .attack_item_info()
-            .map(|i| (i.attack_damage, i.attack_speed))
-            .unwrap_or((0.0, 0.0));
-        let speed = (4.0 + modifiers.1).max(0.1);
-        let scale = ((self.attack_ticks as f32 + 0.5) / (20.0 / speed)).clamp(0.0, 1.0);
+        let hand_damage = self.attack_item_info().map_or(0.0, |i| i.attack_damage);
+        let delay = horizon_client::attack_strength::delay(self.main_hand_attack_speed());
+        let scale = ((self.attack_ticks as f32 + 0.5) / delay).clamp(0.0, 1.0);
        let mut amount =
-            (1.0 + modifiers.0 + self.effect_attack_bonus()) * (0.2 + scale * scale * 0.8);
+            (1.0 + hand_damage + self.effect_attack_bonus()) * (0.2 + scale * scale * 0.8);
        let falling = self
            .player
            .as_ref()
@@ -1465,7 +1462,16 @@ impl Game<'_> {
                    }
                }
                let d2 = (pp.x - pos.x).powi(2) + (pp.y - pos.y).powi(2) + (pp.z - pos.z).powi(2);
-                if d2 < 4096.0 {
+                // Entity.hasLineOfSight: eye to eye (the dragon's eye is 0.85 of
+                // its 8 block height), blocks only.
+                let sees = d2 < 4096.0 && {
+                    let eye = Vec3::new(pos.x, pos.y + 6.8, pos.z);
+                    let target_eye =
+                        tracked.map_or(pp.y + 1.62, |p| p.bounds.max_position().y - 0.18);
+                    self.mob_world_base(&[])
+                        .line_of_sight(eye, Vec3::new(pp.x, target_eye, pp.z))
+                };
+                if sees {
                    *charge += 1;
                    let d = self.dragon.as_ref().expect("dragon");
                    let r = d.yaw.to_radians();
@@ -3020,14 +3026,11 @@ impl Game<'_> {
            let (a, b) = (room.min_position(), room.max_position());
            lo.x < b.x && hi.x > a.x && lo.y < b.y && hi.y > a.y && lo.z < b.z && hi.z > a.z
        };
-        let player = self.player.as_ref().is_some_and(|p| {
-            let w = f64::from(p.dimensions.width) / 2.0;
-            let h = f64::from(p.dimensions.height);
-            touches(
-                Vec3::new(p.position.x - w, p.position.y, p.position.z - w),
-                Vec3::new(p.position.x + w, p.position.y + h, p.position.z + w),
-            )
-        });
+        // Level.getEntities: the host's player and every guest in the level.
+        let player = self
+            .fight_players()
+            .iter()
+            .any(|p| !p.spectator && touches(p.bounds.min_position(), p.bounds.max_position()));
        player
            || self.crystals.iter().any(|c| {
                touches(
@@ -3,14 +3,18 @@
 //! unbreaking (`minecraft:item_damage`), sharpness/smite/bane and power
 //! (`minecraft:damage`), knockback, fire aspect, infinity (`minecraft:ammo_use`),
 //! thorns (`minecraft:post_attack`), mending (`minecraft:repair_with_xp`) and
-//! the armor attribute effects (respiration, depth strider, ...) and Soul
-//! Speed's `location_changed` and `tick` effects.
+//! the armor attribute effects (respiration, depth strider, ...), Soul
+//! Speed's `location_changed` and `tick` effects and the
+//! `minecraft:location_changed` disk effect (frost walker).
 use super::Game;
 use horizon_client::{
    enchant::{EffectContext, Enchantments, level_value},
    items::ItemStack,
+    mobs::Who,
 };
 use horizon_core::{position::BlockPos, random::RandomSource};
+use horizon_world::{fluid::FluidKind, level::LevelAccess, registry::BlockStateId};
+use serde_json::Value;

 /// Where Mending found a damaged item (`EnchantedItemInUse.inSlot`).
 #[derive(Clone, Copy)]
@@ -69,7 +73,7 @@ impl Game<'_> {
    }
    /// `getEnchantedDamage - base`: damage bonus of the held weapon against a mob type.
    pub(super) fn enchant_damage_bonus(&mut self, target: &str) -> f32 {
-        let Some(held) = self.inventory[self.selected].clone() else {
+        let Some(held) = self.held().cloned() else {
            return 0.0;
        };
        let ctx = EffectContext {
@@ -102,7 +106,7 @@ impl Game<'_> {
    /// whether the hit is that knockback attack.
    pub(super) fn extra_knockback(&mut self, target_kind: &str, scale: f32) -> (f32, bool) {
        let knockback_attack = scale > 0.9 && self.player.as_ref().is_some_and(|p| p.sprinting);
-        let enchanted = match self.inventory[self.selected].clone() {
+        let enchanted = match self.held().cloned() {
            Some(held) => {
                let ctx = EffectContext {
                    this: Some(target_kind),
@@ -144,7 +148,7 @@ impl Game<'_> {
    }
    /// After a successful melee hit: fire aspect and wind burst.
    pub(super) fn post_attack(&mut self, mob: usize) {
-        let Some(held) = self.inventory[self.selected].clone() else {
+        let Some(held) = self.held().cloned() else {
            return;
        };
        let Some(m) = self.mobs.get(mob) else { return };
@@ -211,6 +215,106 @@ impl Game<'_> {
        }
        self.post_attack_bursts(&held, &kind);
    }
+    /// `EnchantmentHelper.doPostPiercingAttackEffects`: the
+    /// `minecraft:post_piercing_attack` effects of the weapon in hand after a
+    /// jab (Lunge's dash).
+    pub(super) fn post_piercing_attack(&mut self) {
+        let Some(held) = self.held().cloned() else {
+            return;
+        };
+        let mut effects = Vec::new();
+        for (id, level) in held.enchantments() {
+            let Some(def) = self.res.stations().enchantments.get(id) else {
+                continue;
+            };
+            for entry in def.effects["minecraft:post_piercing_attack"]
+                .as_array()
+                .into_iter()
+                .flatten()
+            {
+                effects.push((*level, entry["effect"].clone()));
+            }
+        }
+        // Lunge's requirements: not riding, gliding or in water, and a
+        // player outside creative with at least 7 food.
+        let Some(p) = self.player.as_ref() else {
+            return;
+        };
+        if effects.is_empty()
+            || self.riding.is_some()
+            || p.fall_flying
+            || p.fluids.was_touching_water
+            || !(self.creative || p.health.food.food >= 7)
+        {
+            return;
+        }
+        for (level, effect) in effects {
+            self.apply_piercing_effect(&effect, level);
+        }
+    }
+    /// One `post_piercing_attack` effect on the player: `AllOf`,
+    /// `ChangeItemDamage`, `ApplyExhaustion`, `ApplyEntityImpulse` and
+    /// `PlaySoundEffect`.
+    fn apply_piercing_effect(&mut self, effect: &serde_json::Value, level: u32) {
+        let amount = || level_value(&effect["amount"], level);
+        match effect["type"].as_str() {
+            Some("minecraft:all_of") => {
+                for e in effect["effects"].as_array().into_iter().flatten() {
+                    self.apply_piercing_effect(e, level);
+                }
+            }
+            Some("minecraft:change_item_damage") => self.damage_held(amount() as u32),
+            Some("minecraft:apply_exhaustion") => {
+                if let Some(p) = self.player.as_mut() {
+                    p.cause_food_exhaustion(amount());
+                }
+            }
+            // The direction turned by the look (`Entity.getLookQuaternion`:
+            // pitch about x, then yaw about y), scaled by coordinate_scale
+            // and the magnitude, added to the velocity (the guest's client
+            // is told of it by `guest_hit_by`).
+            Some("minecraft:apply_impulse") => {
+                let vec3 = |key: &str| [0, 1, 2].map(|i| effect[key][i].as_f64().unwrap_or(0.0));
+                let (d, scale) = (vec3("direction"), vec3("coordinate_scale"));
+                let magnitude = f64::from(level_value(&effect["magnitude"], level));
+                let (yaw, pitch) = (
+                    f64::from(self.yaw).to_radians(),
+                    f64::from(self.pitch).to_radians(),
+                );
+                let (y1, z1) = (
+                    d[1] * pitch.cos() - d[2] * pitch.sin(),
+                    d[1] * pitch.sin() + d[2] * pitch.cos(),
+                );
+                let impulse = horizon_core::geometry::Vec3::new(
+                    (d[0] * yaw.cos() - z1 * yaw.sin()) * scale[0] * magnitude,
+                    y1 * scale[1] * magnitude,
+                    (d[0] * yaw.sin() + z1 * yaw.cos()) * scale[2] * magnitude,
+                );
+                if let Some(p) = self.player.as_mut() {
+                    p.velocity = p.velocity.add_vector(impulse);
+                }
+            }
+            // The sound for the level (a list picks by level), heard by all.
+            Some("minecraft:play_sound") => {
+                let sounds: Vec<&str> = match &effect["sound"] {
+                    serde_json::Value::Array(list) => {
+                        list.iter().filter_map(|s| s.as_str()).collect()
+                    }
+                    one => one.as_str().into_iter().collect(),
+                };
+                let index = (level as usize).saturating_sub(1);
+                if let Some(sound) = sounds.get(index.min(sounds.len().saturating_sub(1))) {
+                    let float = |key: &str| effect[key].as_f64().unwrap_or(1.0) as f32;
+                    let at = self
+                        .player
+                        .as_ref()
+                        .map(|p| [p.position.x, p.position.y, p.position.z]);
+                    self.audio.play(sound, at, float("volume"), float("pitch"));
+                }
+            }
+            _ => {}
+        }
+    }
    /// `ApplyMobEffect.apply`: one of `to_apply` (a single id or a list) for a
    /// random duration and amplifier between the level-based bounds.
    fn apply_mob_effect(&mut self, mob: usize, effect: &serde_json::Value, level: u32) {
@@ -636,6 +740,173 @@ impl Game<'_> {
            self.apply_equipment();
        }
    }
+    /// `EnchantmentHelper.runLocationChangedEffects` for the worn armor of the
+    /// player, run on the server once the player has moved: `LivingEntity.baseTick`
+    /// runs it when the block position changed, `checkFallDamage` when it lands.
+    /// `from` and `was_on_ground` are where and how the tick began.
+    pub(super) fn location_changed_effects(&mut self, from: [f64; 3], was_on_ground: bool) {
+        let Some(p) = self.player.as_ref() else {
+            return;
+        };
+        let at = [p.position.x, p.position.y, p.position.z];
+        let on_ground = p.ground.on_ground;
+        let cell = |v: [f64; 3]| v.map(|c| c.floor() as i32);
+        if cell(from) == cell(at) && !(on_ground && !was_on_ground) {
+            return;
+        }
+        let riding = self.riding.is_some();
+        let mut disks = Vec::new();
+        for (stack, slot) in self.armor.iter().zip(["head", "chest", "legs", "feet"]) {
+            let Some(stack) = stack else { continue };
+            for (id, level) in stack.enchantments() {
+                let Some(def) = self.res.stations().enchantments.get(id) else {
+                    continue;
+                };
+                if !def
+                    .slots
+                    .iter()
+                    .any(|s| s == slot || s == "armor" || s == "any")
+                {
+                    continue;
+                }
+                for effect in def.effects["minecraft:location_changed"]
+                    .as_array()
+                    .into_iter()
+                    .flatten()
+                {
+                    if effect["effect"]["type"] == "minecraft:replace_disk"
+                        && location_requirements(&effect["requirements"], on_ground, riding)
+                    {
+                        disks.push((effect["effect"].clone(), *level));
+                    }
+                }
+            }
+        }
+        for (effect, level) in disks {
+            self.replace_disk(&effect, level, at);
+        }
+    }
+    /// `ReplaceDisk.apply`: the blocks of the disk around `at` that pass the
+    /// predicate become the effect's state, and each placement is a game event.
+    fn replace_disk(&mut self, effect: &Value, level: u32, at: [f64; 3]) {
+        let registry = self.pack.assets.registry;
+        let spec = &effect["block_state"];
+        let Some(default) = spec["id"].as_str().and_then(|n| registry.default_state(n)) else {
+            return;
+        };
+        let Some(mut state) = registry.state(default).cloned() else {
+            return;
+        };
+        for (k, v) in spec["properties"].as_object().into_iter().flatten() {
+            state
+                .properties
+                .insert(k.clone(), v.as_str().unwrap_or("").to_owned());
+        }
+        let new = registry.resolve(&state).unwrap_or(default);
+        let radius = level_value(&effect["radius"], level) as i32;
+        let height = level_value(&effect["height"], level) as i32;
+        let offset = cell_offset(effect);
+        let center = [0, 1, 2].map(|i| at[i].floor() as i32 + offset[i]);
+        let event = effect["trigger_game_event"].as_str() == Some("minecraft:block_place");
+        for dy in (height - 1).min(0)..=0 {
+            for dz in -radius..=radius {
+                for dx in -radius..=radius {
+                    let pos = [center[0] + dx, center[1] + dy, center[2] + dz];
+                    let (x, z) = (
+                        f64::from(pos[0]) + 0.5 - at[0],
+                        f64::from(pos[2]) + 0.5 - at[2],
+                    );
+                    if x * x + z * z >= f64::from(radius * radius)
+                        || !self.disk_predicate(&effect["predicate"], pos, new)
+                        || self.level_set(pos, new).is_err()
+                    {
+                        continue;
+                    }
+                    if event {
+                        self.post_block_game_event(
+                            "minecraft:block_place",
+                            pos,
+                            Some(Who::Player),
+                            Some(new),
+                        );
+                    }
+                }
+            }
+        }
+    }
+    /// The `BlockPredicate` subset the disk effect uses, tested at `pos`; no
+    /// predicate matches everything.
+    fn disk_predicate(&mut self, p: &Value, pos: [i32; 3], placed: BlockStateId) -> bool {
+        if p.is_null() {
+            return true;
+        }
+        let offset = cell_offset(p);
+        let at = [0, 1, 2].map(|i| pos[i] + offset[i]);
+        let state = self.world.block(at[0], at[1], at[2]);
+        let b = self.res.behaviours();
+        let names = |v: &Value| -> Vec<String> {
+            match v {
+                Value::String(s) => vec![s.clone()],
+                Value::Array(a) => a
+                    .iter()
+                    .filter_map(|n| n.as_str().map(String::from))
+                    .collect(),
+                _ => Vec::new(),
+            }
+        };
+        match p["type"].as_str().unwrap_or("") {
+            "minecraft:all_of" => p["predicates"]
+                .as_array()
+                .into_iter()
+                .flatten()
+                .all(|q| self.disk_predicate(q, pos, placed)),
+            // `MatchingBlockTagPredicate`
+            "minecraft:matching_block_tag" => b
+                .tag(p["tag"].as_str().unwrap_or("").trim_start_matches('#'))
+                .is_some_and(|t| t.contains(b.block(state))),
+            // `MatchingBlocksPredicate`
+            "minecraft:matching_blocks" => {
+                names(&p["blocks"]).iter().any(|n| n == b.table.name(state))
+            }
+            // `MatchingFluidsPredicate`: Fluids.WATER is the source.
+            "minecraft:matching_fluids" => {
+                let fluid = b.fluid(state);
+                names(&p["fluids"]).iter().any(|n| match n.as_str() {
+                    "minecraft:water" => fluid.kind() == FluidKind::Water && fluid.is_source(),
+                    "minecraft:flowing_water" => {
+                        fluid.kind() == FluidKind::Water && !fluid.is_source()
+                    }
+                    _ => false,
+                })
+            }
+            // `UnobstructedPredicate`: no building-blocking entity in the block.
+            "minecraft:unobstructed" => self.with_level(|_, level, _| {
+                level.is_unobstructed(BlockPos::new(pos[0], pos[1], pos[2]), placed)
+            }),
+            _ => false,
+        }
+    }
+    /// Whether a worn enchantment gives immunity to `#burn_from_stepping`
+    /// damage (frost walker's `minecraft:damage_immunity`).
+    pub(crate) fn wears_burn_from_stepping_immunity(&self) -> bool {
+        self.armor
+            .iter()
+            .zip(["head", "chest", "legs", "feet"])
+            .any(|(stack, slot)| {
+                stack
+                    .iter()
+                    .flat_map(ItemStack::enchantments)
+                    .any(|(id, _)| {
+                        self.res.stations().enchantments.get(id).is_some_and(|def| {
+                            def.effects.get("minecraft:damage_immunity").is_some()
+                                && def
+                                    .slots
+                                    .iter()
+                                    .any(|s| s == slot || s == "armor" || s == "any")
+                        })
+                    })
+            })
+    }
    /// Enchantment attribute modifiers of worn armor (respiration, depth strider...).
    /// Each piece's modifier id ends with its slot (`EnchantmentAttributeEffect.idForSlot`),
    /// so the same enchantment on two pieces stacks instead of replacing itself.
@@ -684,3 +955,35 @@ fn soul_speed_modifiers(
        })
        .collect()
 }
+
+/// An effect's or predicate's `offset` vector (zero when absent).
+fn cell_offset(v: &Value) -> [i32; 3] {
+    let at = |i: usize| {
+        v["offset"]
+            .get(i)
+            .and_then(Value::as_i64)
+            .map_or(0, |n| n as i32)
+    };
+    [at(0), at(1), at(2)]
+}
+/// The loot-condition subset a `location_changed` effect requires of the
+/// wearer: standing on the ground and not riding (frost walker).
+fn location_requirements(req: &Value, on_ground: bool, riding: bool) -> bool {
+    match req["type"].as_str().unwrap_or("") {
+        "" if req.is_null() => true,
+        "minecraft:all_of" => req["terms"]
+            .as_array()
+            .into_iter()
+            .flatten()
+            .all(|t| location_requirements(t, on_ground, riding)),
+        "minecraft:inverted" => !location_requirements(&req["term"], on_ground, riding),
+        "minecraft:entity_properties" => {
+            let p = &req["predicate"];
+            p["minecraft:flags"]["is_on_ground"]
+                .as_bool()
+                .is_none_or(|v| v == on_ground)
+                && (p["minecraft:vehicle"].is_null() || riding)
+        }
+        _ => false,
+    }
+}
@@ -12,6 +12,7 @@ use horizon_client::{
    motion::PlayerMotion,
    particles::{ParticleOptions, ParticleType},
    vanillagen::VanillaTerrain,
+    world_spawn::PlayerSpawnFinder,
 };
 use horizon_core::{
    geometry::Vec3,
@@ -581,7 +582,15 @@ impl Game<'_> {
        let position = if let Some(job) = self.end.job.take() {
            self.resolve_gateway(job, target)?
        } else {
-            let (position, yaw) = self.end_arrival(target)?;
+            let mut finder = self.player_spawn.take();
+            let arrival = self.end_arrival(target, &mut finder);
+            self.player_spawn = finder;
+            let Some((position, yaw)) = arrival? else {
+                // A spawn candidate's chunk is loading: try again next tick.
+                self.travelling = Some((player, target));
+                self.end_travel = true;
+                return Ok(());
+            };
            if let Some(yaw) = yaw {
                self.yaw = yaw;
                player.yaw = yaw;
@@ -606,7 +615,13 @@ impl Game<'_> {
    /// Where an End portal's traveller lands once `target` has loaded, and
    /// the yaw it faces there: the platform below the End's spawn point,
    /// facing west, or the top of the Overworld's spawn column.
-    pub(super) fn end_arrival(&mut self, target: Vec3) -> Result<(Vec3, Option<f32>)> {
+    /// None while a candidate of the world spawn's search loads (`finder`
+    /// keeps it, see `search_spawn`).
+    pub(super) fn end_arrival(
+        &mut self,
+        target: Vec3,
+        finder: &mut Option<PlayerSpawnFinder>,
+    ) -> Result<Option<(Vec3, Option<f32>)>> {
        if self.dim == Dim::End {
            // EndPlatformFeature.createEndPlatform below the spawn point.
            let origin = [END_SPAWN[0], END_SPAWN[1] - 1, END_SPAWN[2]];
@@ -626,22 +641,32 @@ impl Game<'_> {
                }
            }
            // Direction.WEST.toYRot().
-            return Ok((target, Some(90.0)));
+            return Ok(Some((target, Some(90.0))));
        }
        // ServerPlayer.findRespawnPositionAndUseSpawnBlock: where the bed or
        // anchor puts the player, facing it; else onto the spawn column.
        let mut target = target;
        if let Some(c) = self.respawn_config.filter(|c| c.dim == self.dim) {
            if let Some((at, yaw)) = self.find_respawn_and_use(c, false)? {
-                return Ok((at, Some(yaw)));
+                return Ok(Some((at, Some(yaw))));
            }
            let s = self.level.spawn.unwrap_or([0.0, 64.0, 0.0]);
            target = Vec3::new(s[0].floor() + 0.5, s[1], s[2].floor() + 0.5);
        }
-        let y = self
-            .land_column(target.x.floor() as i32, target.z.floor() as i32)
-            .map_or(target.y, f64::from);
-        Ok((Vec3::new(target.x, y, target.z), None))
+        let (x, z) = (target.x.floor() as i32, target.z.floor() as i32);
+        // TeleportTransition.missingRespawnBlock: PlayerSpawnFinder around
+        // the world spawn.
+        if let Some(world) = self.level.world_spawn.filter(|w| w[0] == x && w[2] == z) {
+            return Ok(match self.search_spawn(world, finder) {
+                Ok(at) => Some((at, None)),
+                Err(chunk) => {
+                    self.spawn_wait.push(chunk);
+                    None
+                }
+            });
+        }
+        let y = self.land_column(x, z).map_or(target.y, f64::from);
+        Ok(Some((Vec3::new(target.x, y, target.z), None)))
    }

    /// Dying away from the Overworld respawns at the world spawn there.
@@ -71,10 +71,18 @@ impl Game<'_> {
            Some(r) => self.settings.render_distance.min(r.view_distance),
            None => self.settings.render_distance,
        };
-        (f64::from(distance) / 8.0).clamp(1.0, 2.5) * f64::from(self.settings.entity_distance)
+        entity_view_scale(distance, self.settings.entity_distance)
    }
 }

+/// Entity.setViewScale: `Mth.clamp(renderDistance / 8, 1, 2.5) *
+/// entityDistanceScaling`. Every entity's draw distance is scaled by it, so
+/// a small mob is drawn nearer than a big one and a longer render distance
+/// draws both further away.
+pub(super) fn entity_view_scale(render_distance: i32, entity_distance: f32) -> f64 {
+    (f64::from(render_distance) / 8.0).clamp(1.0, 2.5) * f64::from(entity_distance)
+}
+
 /// Entity.shouldRenderAtSqrDistance's default range: 64 times the bounding
 /// box's mean edge, scaled by the view scale.
 pub(super) fn default_range(size: glam::DVec3, view_scale: f64) -> f64 {
@@ -135,3 +143,41 @@ impl Game<'_> {
        self.entity_in_view(camera, position, range, lo, hi)
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// `Entity.setViewScale`: the entity distance option times the render
+    /// distance's boost — 1 at eight chunks, 1.5 at twelve, 2.5 at twenty.
+    #[test]
+    fn the_view_scale_follows_the_render_distance() {
+        assert_eq!(entity_view_scale(4, 1.0), 1.0);
+        assert_eq!(entity_view_scale(8, 1.0), 1.0);
+        assert_eq!(entity_view_scale(12, 1.0), 1.5);
+        assert_eq!(entity_view_scale(20, 1.0), 2.5);
+        assert_eq!(entity_view_scale(32, 1.0), 2.5);
+        // The entity distance option scales it down.
+        assert_eq!(entity_view_scale(12, 0.5), 0.75);
+    }
+
+    /// `Entity.shouldRenderAtSqrDistance`: a chicken's box (0.4 by 0.7 by
+    /// 0.4) is drawn up to 48 blocks away at the vanilla defaults, not the
+    /// 32 blocks a missing view scale leaves (#2273).
+    #[test]
+    fn a_chicken_is_drawn_forty_eight_blocks_away() {
+        let range = default_range(glam::DVec3::new(0.4, 0.7, 0.4), entity_view_scale(12, 1.0));
+        assert_eq!(range, 48.0);
+    }
+
+    /// `Entity.shouldRenderAtSqrDistance` on a broken box: the size falls
+    /// back to one block.
+    #[test]
+    fn a_broken_bounding_box_falls_back_to_one_block() {
+        let range = default_range(
+            glam::DVec3::new(f64::NAN, 0.7, 0.4),
+            entity_view_scale(12, 1.0),
+        );
+        assert_eq!(range, 96.0);
+    }
+}
@@ -1,7 +1,7 @@
 //! Fishing: `FishingRodItem.use` (cast / reel in), the `FishingHook` (flight,
 //! bobbing, lure and bite timers, open water, hooking mobs, retrieving the
 //! `gameplay/fishing` loot) and `FishingHookRenderer` (bobber and line).
-use super::{Game, view_vector};
+use super::{Game, lan::LanHost, lan_mobs::guest_bounds, view_vector};
 use horizon_client::advancements::EntityView;
 use horizon_client::lan::{entity::States, hub::Hub};
 use horizon_client::{
@@ -15,6 +15,7 @@ use horizon_client::{
 };
 use horizon_core::{
    geometry::{Aabb, Vec3, trig},
+    position::BlockPos,
    random::RandomSource,
 };
 use horizon_protocol::entity_data::{Value, serializer};
@@ -46,6 +47,13 @@ pub(super) struct Hook {
    luck: i32,
    lure: i32,
 }
+/// A player a hook can catch (`canHitEntity`): their entity id, which
+/// guest they are (none: the host) and their box.
+pub(super) struct HookTarget {
+    id: u32,
+    conn: Option<u32>,
+    bounds: Aabb,
+}
 const SIZE: f64 = 0.25;
 fn bounds(p: Vec3) -> Aabb {
    let h = SIZE / 2.0;
@@ -167,6 +175,11 @@ impl Game<'_> {
            } else if let Some(item) = self.dropped.iter_mut().find(|i| i.id == id) {
                item.velocity = pulled(item.velocity);
                hooked_item = true;
+            } else if self.creatures.hook_targets.iter().any(|t| t.id == id) {
+                // A player: the hub moves them when the tick ends.
+                self.creatures
+                    .hook_pulls
+                    .push((id, Vec3::new(d.x * 0.1, d.y * 0.1, d.z * 0.1)));
            }
            // CriteriaTriggers.FISHING_ROD_HOOKED with no items.
            let hooked = self
@@ -248,7 +261,7 @@ impl Game<'_> {
                    item,
                    [hook.position.x, hook.position.y, hook.position.z],
                    v,
-                    10,
+                    0,
                );
                let xp = self.world.random.next_int_bound(6).unwrap_or(0) as u32 + 1;
                self.spawn_orbs([owner.x, owner.y + 0.5, owner.z + 0.5], xp);
@@ -339,9 +352,12 @@ impl Game<'_> {
        let mut speed = 1;
        let above = [b[0], b[1] + 1, b[2]];
        let sky = self.world.light(above[0], above[1], above[2]) >> 4 == 15;
-        let raining = self.world.weather.raining;
-        let r = &mut self.world.random;
-        if r.next_float() < 0.25 && raining && sky {
+        // Level.isRainingAt: rain (not snow) reaches the position.
+        if self.world.random.next_float() < 0.25
+            && self.with_level(|b, level, _| {
+                b.is_raining_at(level, BlockPos::new(above[0], above[1], above[2]))
+            })
+        {
            speed += 1;
        }
        let r = &mut self.world.random;
@@ -472,6 +488,15 @@ impl Game<'_> {
        if !self.holds_rod() || d2 > 1024.0 {
            return;
        }
+        // The players it can catch, as they stand now (the host's own hook;
+        // guests' hooks use the ones taken as their turns start).
+        if self.lan_acting.is_none()
+            && matches!(h.state, State::Flying | State::Hooked(_))
+            && let Some(host) = self.lan.take()
+        {
+            self.refresh_hook_targets(&host);
+            self.lan = Some(host);
+        }
        h.previous = h.position;
        if h.on_ground {
            h.life += 1;
@@ -497,8 +522,8 @@ impl Game<'_> {
                    self.hook = Some(h);
                    return;
                }
-                // checkCollision: hook the first living mob it touches, or (via
-                // `canHitEntity`) a dropped item.
+                // checkCollision: hook the first living mob or other player it
+                // touches, or (via `canHitEntity`) a dropped item.
                let bb = bounds(h.position);
                let (lo, hi) = (bb.min_position(), bb.max_position());
                let touches = |b: Aabb| {
@@ -510,6 +535,14 @@ impl Game<'_> {
                    .iter()
                    .find(|m| m.alive() && touches(m.bounds()))
                    .map(|m| m.id)
+                    .or_else(|| {
+                        let owner = self.lan_acting;
+                        self.creatures
+                            .hook_targets
+                            .iter()
+                            .find(|t| t.conn != owner && touches(t.bounds))
+                            .map(|t| t.id)
+                    })
                    .or_else(|| {
                        self.dropped
                            .iter()
@@ -524,12 +557,25 @@ impl Game<'_> {
                }
            }
            State::Hooked(id) => {
-                // updateHookedEntity: ride the hooked mob or item at 0.8 of its height.
+                // updateHookedEntity: ride the hooked mob, player or item at 0.8 of its height.
                let hooked = self
                    .mobs
                    .iter()
                    .find(|m| m.id == id && m.alive())
                    .map(|m| (m.position, f64::from(m.height())))
+                    .or_else(|| {
+                        self.creatures
+                            .hook_targets
+                            .iter()
+                            .find(|t| t.id == id)
+                            .map(|t| {
+                                let (lo, hi) = (t.bounds.min_position(), t.bounds.max_position());
+                                (
+                                    Vec3::new((lo.x + hi.x) / 2.0, lo.y, (lo.z + hi.z) / 2.0),
+                                    hi.y - lo.y,
+                                )
+                            })
+                    })
                    .or_else(|| {
                        self.dropped
                            .iter()
@@ -598,6 +644,59 @@ impl Game<'_> {
        );
        self.hook = Some(h);
    }
+    /// The players a hook can catch: everyone but spectators and the dead
+    /// (`Projectile.canHitEntity`), the host and the guests in the level.
+    pub(super) fn refresh_hook_targets(&mut self, host: &LanHost) {
+        let mut targets = Vec::new();
+        if self.options.dedicated.is_none()
+            && !self.spectator()
+            && let Some(p) = self.player.as_ref()
+            && !p.health.dead_or_dying()
+        {
+            targets.push(HookTarget {
+                id: host.host_entity as u32,
+                conn: None,
+                bounds: p.bounds(),
+            });
+        }
+        for g in &host.hub.guests {
+            if host.hub.here(g) && g.loaded && !g.dead && !g.spectator() {
+                targets.push(HookTarget {
+                    id: g.entity_id as u32,
+                    conn: Some(g.conn),
+                    bounds: guest_bounds(g),
+                });
+            }
+        }
+        self.creatures.hook_targets = targets;
+    }
+    /// `FishingHook.pullEntity` on the players the hooks reeled in this tick
+    /// pulled: their velocity moves, and a guest's reaches their client.
+    pub(super) fn flush_hook_pulls(&mut self) {
+        let pulls = std::mem::take(&mut self.creatures.hook_pulls);
+        let Some(mut host) = self.lan.take() else {
+            return;
+        };
+        for (id, delta) in pulls {
+            let push = |g: &mut Self| {
+                if let Some(p) = g.player.as_mut() {
+                    p.velocity = p.velocity.add_vector(delta);
+                }
+            };
+            if id == host.host_entity as u32 {
+                push(self);
+            } else if let Some(conn) = host
+                .hub
+                .guests
+                .iter()
+                .find(|g| g.entity_id as u32 == id)
+                .map(|g| g.conn)
+            {
+                self.guest_hit_by(&mut host, conn, push);
+            }
+        }
+        self.lan = Some(host);
+    }
    /// `FishingRodCast`: the stack in the arm holding the rod
    /// (`FishingHookRenderer.getHoldingArm`) while the hook is out.
    pub(super) fn cast_rod(&self) -> Option<&ItemStack> {
@@ -1,11 +1,13 @@
 //! Field of view (`Camera.tickFov`, `calculateFov`,
 //! `AbstractClientPlayer.getFieldOfViewModifier`), view and hurt bobbing
-//! (`GameRenderer.bobHurt`, `bobView`) and the spyglass (`SpyglassItem`,
+//! (`GameRenderer.bobHurt`, `bobView`), the portal and Nausea spin
+//! (`GameRenderer.renderLevel`) and the spyglass (`SpyglassItem`,
 //! `Hud.extractSpyglassOverlay`). The arithmetic is `horizon_client::camera`.
 use super::Game;
 use horizon_client::{
    camera::{
        BobState, CameraFluid, FovPlayer, HurtBob, UseItem, bob_matrix, field_of_view_modifier,
+        spinning_effect_matrix,
    },
    fog::{FogType, fog_type},
    hud::HudBatch,
@@ -26,6 +28,28 @@ impl Game<'_> {
    pub(super) fn fov_effect_scale(&self) -> f32 {
        self.settings.file.double("fovEffectScale") as f32
    }
+    /// `options.screenEffectScale` (Distortion Effects).
+    pub(super) fn screen_effect_scale(&self) -> f32 {
+        self.settings.file.double("screenEffectScale") as f32
+    }
+    /// `LocalPlayer.getEffectBlendFactor(NAUSEA, partial)`: 0 without the effect.
+    pub(super) fn nausea_blend(&self, partial: f32) -> f32 {
+        if self.potions.effects.get("nausea").is_none() {
+            return 0.0;
+        }
+        let fx = &self.screen_fx;
+        fx.o_nausea + partial * (fx.nausea - fx.o_nausea)
+    }
+    /// The spin `GameRenderer.renderLevel` multiplies into the level's
+    /// projection: the larger of the portal and Nausea intensities, scaled by
+    /// Distortion Effects squared, turning by `LocalPlayer.getSpinningEffectAngle`.
+    pub(super) fn spinning_matrix(&self, partial: f32) -> glam::Mat4 {
+        let fx = &self.screen_fx;
+        let portal = fx.o_portal + partial * (fx.portal - fx.o_portal);
+        let scale = self.screen_effect_scale();
+        let intensity = portal.max(self.nausea_blend(partial)) * (scale * scale);
+        spinning_effect_matrix(intensity, fx.spinning_time + partial * fx.spinning_speed)
+    }
    /// What `AbstractClientPlayer.getFieldOfViewModifier` reads.
    fn fov_player(&self) -> Option<FovPlayer> {
        let p = self.player.as_ref()?;