launcher: a new Horizon instance is "My Horizon", its versions dated "Nov 1"

The mockup's instance dialog names a new instance before the player types (defaultName): "My
Horizon" for Horizon, as the launcher already did with "Vanilla 26.3" or "Fabric 26.3". A new
Horizon instance opened with an empty name and "New instance" as its title. The dialog now
starts with the default name for every kind, and it follows the kind until the player types
one. The Horizon version rows say "Nov 1" as the mockup's, not "2026-11-01" (the Versions
page's day format). One new string, "My Horizon", in the 16 languages.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

.github/actionlint.yaml

@@ -1,4 +1,3 @@
 self-hosted-runner:
   # The Mac mini's runner (ludovics-mac-mini), which holds the maintainer's own Minecraft files.
-  # windows-11-vs2026-arm is GitHub's Windows ARM64 image (2026-08), newer than actionlint's label list.
-  labels: [horizon-game, ludovics-mac-mini, windows-11-vs2026-arm]
+  labels: [horizon-game, ludovics-mac-mini]

.github/trusted-reviewers.txt

@@ -1,16 +1,10 @@
-# Trusted reviewers: one list for three things (docs/release-flow.md "Trusted reviewers").
+# 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);
-# - `/unclaim @login` releases someone else's claim, and listed reviewers have no claim limit (tools/ci/claim_command.py).
-# One reviewer per line: `<numeric GitHub ID> <login>`, with who added it and when. The ID decides; the login is only
-# for people reading this file and for messages. A login is a name anyone can claim once its owner renames or deletes
-# the account; an ID is never reused. Get it with `gh api users/<login> --jq .id`, or run
-# `python3 tools/ci/resolve_reviewer_ids.py` to fill in the IDs and `--check` to catch renames.
-# A line in any other form (a bare login included) grants nothing. Ludovic is always allowed (OWNER_ID in
-# tools/ci/nightly_set.py) and isn't listed. Removing a line revokes that account at once. A line with only `paused`
-# stops all three for every reviewer (Ludovic's still work).
-54669067 kacpherek       # added by Ludovic, 2026-10-27
-87152661 rdbtCVS         # added by Ludovic, 2026-10-27
-84875247 Online5277      # added by Ludovic, 2026-10-27 (his top three by merged pull requests)
-86072227 levzzz5154      # added by Ludovic, 2026-10-28 (Horizon Team; author of horizon-mixins)
-87478350 Qwerner88880    # added by Ludovic, 2026-10-31 (Discord vladislav_hagen; native-mod hooks)
+# - `/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)
+Qwerner88880 # added by Ludovic, 2026-10-31 (Discord vladislav_hagen; native-mod hooks)

.github/workflows/cancel-on-close.yml

@@ -9,9 +9,9 @@ permissions:
   actions: write
 jobs:
   cancel:
-    # One of our small runners (horizon-light), out of GitHub's pool: no checkout, no code of the pull request
+    # One of playhorizon's small runners, out of GitHub's shared pool: no checkout, no code of the pull request
     # (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     steps:
       - name: Cancel the pull request's unfinished runs
         env:

.github/workflows/cargo-horizon-mod.yml

@@ -1,107 +0,0 @@
-name: cargo-horizon-mod
-# `cargo binstall --git https://github.com/horizon-rust/horizon cargo-horizon-mod` (#2120): binstall reads
-# [package.metadata.binstall] from crates/cargo-horizon-mod/Cargo.toml and downloads the archive this workflow
-# attaches to the tag `cargo-horizon-mod-v<version>`, whose version must be the manifest's. The targets come from
-# tools/horizon_mod_binstall.py, the same file the manifest's template is checked against, so a platform added there
-# is built here and one nobody publishes is caught before it ships. A pull request builds the archives and publishes
-# nothing.
-on:
-  push:
-    tags: ['cargo-horizon-mod-v*']
-  pull_request:
-    paths:
-      - 'crates/cargo-horizon-mod/**'
-      - 'tools/horizon_mod_binstall.py'
-      - '.github/workflows/cargo-horizon-mod.yml'
-permissions:
-  contents: read
-jobs:
-  plan:
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    outputs:
-      platforms: ${{ steps.platforms.outputs.platforms }}
-    steps:
-      - uses: actions/checkout@v7
-      - id: platforms
-        run: echo "platforms=$(python3 -c 'import json, tools.horizon_mod_binstall as m; print(json.dumps(m.PLATFORMS))')" >> "$GITHUB_OUTPUT"
-  build:
-    needs: plan
-    name: build ${{ matrix.target }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJSON(needs.plan.outputs.platforms) }}
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-      - name: The aarch64 Linux linker
-        if: matrix.target == 'aarch64-unknown-linux-gnu'
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y gcc-aarch64-linux-gnu
-          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> "$GITHUB_ENV"
-      - name: Build
-        run: cargo build --release --locked -p cargo-horizon-mod --target ${{ matrix.target }}
-      - name: It starts
-        if: matrix.run
-        shell: bash
-        run: |
-          set -euo pipefail
-          binary="target/${{ matrix.target }}/release/cargo-horizon-mod"
-          [ -f "$binary.exe" ] && binary="$binary.exe"
-          out=$("$binary" 2>&1 || true)
-          case "$out" in
-            *"usage: cargo horizon-mod"*) ;;
-            *) echo "$out"; echo "::error::$binary does not start"; exit 1 ;;
-          esac
-      - name: Package
-        shell: bash
-        run: |
-          set -euo pipefail
-          binary="target/${{ matrix.target }}/release/cargo-horizon-mod"
-          [ -f "$binary.exe" ] && binary="$binary.exe"
-          mkdir -p dist
-          tar -czf "dist/$(basename "$binary" | sed 's/\.exe$//')-${{ matrix.target }}.tar.gz" -C "$(dirname "$binary")" "$(basename "$binary")"
-      - uses: actions/upload-artifact@v7
-        with:
-          name: cargo-horizon-mod-${{ matrix.target }}
-          path: dist/*.tar.gz
-          if-no-files-found: error
-          retention-days: 3
-  publish:
-    needs: build
-    if: startsWith(github.ref, 'refs/tags/')
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v7
-      - uses: actions/download-artifact@v8
-        with:
-          pattern: cargo-horizon-mod-*
-          path: dist
-          merge-multiple: true
-      - name: The tag and the manifest name the same release and archives
-        run: python3 tools/horizon_mod_binstall.py dist "$GITHUB_REF_NAME"
-      - name: Checksums
-        run: |
-          set -euo pipefail
-          cd dist
-          for file in *.tar.gz; do sha256sum "$file" | cut -d' ' -f1 > "$file.sha256"; done
-      - name: Publish
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          set -euo pipefail
-          notes="\`cargo binstall --git https://github.com/horizon-rust/horizon cargo-horizon-mod\`"
-          if gh release view "$GITHUB_REF_NAME" >/dev/null 2>&1; then
-            gh release upload "$GITHUB_REF_NAME" dist/* --clobber
-          else
-            gh release create "$GITHUB_REF_NAME" dist/* --latest=false --title "cargo-horizon-mod ${GITHUB_REF_NAME#cargo-horizon-mod-v}" --notes "$notes"
-          fi

.github/workflows/ci.yml

@@ -27,24 +27,19 @@ jobs:
   # One job, not one per check: each job takes a runner from the organisation's shared pool, and with every pull request
   # and every merge to main starting this workflow, three jobs a run left the pool's queue tens of minutes deep.
   #
-  # Where (docs/ci-runners.md): our checks runners (label horizon-checks: the desktop's, an isolated user, so a fork's
-  # pull request runs there too) take the pull requests whose number ends in 0 or 1, about what their three runners
-  # can do; GitHub's runners take the others and main's pushes (which also save the Rust cache GitHub's pull request
-  # runs read), so both pools work at once. The repository variable SELF_HOSTED_CI moves them: `all` every job to
-  # ours, `light` (the desktop paused) or `off` every job to GitHub's. On ours the build folder persists
-  # (CARGO_TARGET_DIR, outside the checkout), so the apt packages, Python and the Rust cache steps are GitHub's only.
+  # Where: GitHub's runners. With the repository variable SELF_HOSTED_CI=all (for when that pool is full: their 4 CPUs
+  # are about one GitHub runner, docs/ci-runners.md), main's pushes and this repository's own pull requests run on
+  # playhorizon's checks runners (label playhorizon-ci); a fork's pull request never does (and the runners refuse it
+  # themselves). There the build folder persists (CARGO_TARGET_DIR, outside the checkout), so the apt packages,
+  # Python and the Rust cache steps are GitHub's only.
   verify:
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
-      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    runs-on: ${{ vars.SELF_HOSTED_CI == 'all' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) && fromJSON('["self-hosted", "linux", "playhorizon-ci"]') || 'ubuntu-latest' }}
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-python@v7
+      - uses: actions/setup-python@v5
         if: runner.environment == 'github-hosted'
         with:
           python-version: '3.12'
@@ -68,16 +63,6 @@ jobs:
           else
             python tools/check_public_tree.py --history
           fi
-      # Our runners as GitHub's: some Python tests compile Rust with a bare `rustc` (GitHub's image has a default
-      # toolchain, our runners' own rustup homes may not), and the GPU tests find no adapter there, so they return
-      # early. Ours have Mesa's software Vulkan for parity; a backend Linux lacks keeps the tests from it, so a pull
-      # request's verify doesn't depend on which pool took it (#8627: a GPU test that flakes on lavapipe).
-      - name: Our runners as GitHub's (a default Rust toolchain, no GPU)
-        if: runner.environment != 'github-hosted'
-        run: |
-          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-          rustup default stable
-          echo "WGPU_BACKEND=dx12" >> "$GITHUB_ENV"
       - name: Test offline research tooling
         run: python -m unittest discover -s tests -v
       - name: Install Rust toolchain and the ALSA and udev headers the client links against
@@ -119,14 +104,10 @@ jobs:
   # changes it or a crate it builds is checked here, and so is every push to main: two pull requests can each pass
   # alone and break it together (#2059 and the registry ratings did, 2026-10-26).
   launcher:
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
-      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    runs-on: ${{ vars.SELF_HOSTED_CI == 'all' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) && fromJSON('["self-hosted", "linux", "playhorizon-ci"]') || 'ubuntu-latest' }}
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Does this pull request change the launcher or a crate it builds?
@@ -158,113 +139,18 @@ jobs:
         run: |
           cargo +stable fmt --check
           cargo +stable clippy --all-targets --locked -- -D warnings
-          cargo +stable test --locked --lib --bins
-  # Compile and test Windows ARM64 on an actual ARM64 host, and inspect the resulting PE headers. By hand only
-  # (`gh workflow run checks --ref <branch>`): GitHub's runner queue is the bottleneck, and main's runs gate the
-  # releases (tools/release_train.py waits for them), so neither pull requests nor main's pushes start this
-  # 90-minute job. The Nightly and launcher releases build and check these binaries on every run.
-  windows-arm64:
-    name: Windows ARM64 game and launcher
-    if: github.event_name == 'workflow_dispatch'
-    runs-on: windows-11-vs2026-arm
-    timeout-minutes: 90
-    env:
-      RUSTFLAGS: -C target-feature=+crt-static
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Use every runner core for Cargo
-        shell: pwsh
-        run: |
-          $cores = (Get-CimInstance Win32_Processor | Measure-Object -Property NumberOfLogicalProcessors -Sum).Sum
-          "CARGO_BUILD_JOBS=$cores" >> $env:GITHUB_ENV
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: aarch64-pc-windows-msvc
-      - uses: Swatinem/rust-cache@v2
-        with:
-          shared-key: windows-arm64-game
-      - uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: launcher
-          shared-key: windows-arm64-launcher
-      - name: Check LLVM assembler used by ring
-        shell: pwsh
-        run: |
-          $llvmBin = Join-Path $env:ProgramFiles 'LLVM\bin'
-          if (-not (Get-Command clang -ErrorAction SilentlyContinue) -and (Test-Path (Join-Path $llvmBin 'clang.exe'))) {
-            $env:PATH = "$llvmBin;$env:PATH"
-            "PATH=$env:PATH" >> $env:GITHUB_ENV
-          }
-          $clang = Get-Command clang -ErrorAction Stop
-          Write-Output "Using $($clang.Source)"
-          & $clang.Source --version
-      - name: Build the game for native Windows ARM64
-        run: cargo build --release --locked --target aarch64-pc-windows-msvc -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
-      - name: Check the game's PE machine
-        run: python tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
-      - name: Check game DLL imports
-        run: python tools/check_imports.py target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
-      - name: Start every game executable
-        shell: pwsh
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $client = 'target/aarch64-pc-windows-msvc/release/horizon-client.exe'
-          $output = & $client --help 2>&1
-          if ($LASTEXITCODE -ne 0 -or ($output -join "`n") -notmatch '--resources') { throw 'horizon-client --help failed' }
-          foreach ($binary in @('horizon-ctl.exe', 'horizon-prepare.exe', 'horizon-server.exe')) {
-            $path = "target/aarch64-pc-windows-msvc/release/$binary"
-            $output = & $path --help 2>&1
-            if ($LASTEXITCODE -ne 0 -or -not $output) { throw "$binary --help failed" }
-          }
-          foreach ($binary in @('horizon-prepare.exe', 'horizon-server.exe')) {
-            $path = "target/aarch64-pc-windows-msvc/release/$binary"
-            $output = & $path --version 2>&1
-            if ($LASTEXITCODE -ne 0 -or -not $output) { throw "$binary --version failed" }
-            Write-Output ($output -join "`n")
-          }
-      - name: Test and build the native Windows ARM64 launcher
-        working-directory: launcher
-        run: |
-          cargo test --release --locked --target aarch64-pc-windows-msvc --lib
-          cargo build --release --locked --target aarch64-pc-windows-msvc
-      - name: Check the launcher's PE machine
-        working-directory: launcher
-        run: python ../tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-launcher.exe
-      - name: Check launcher DLL imports and command-line startup
-        working-directory: launcher
-        shell: pwsh
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $launcher = 'target/aarch64-pc-windows-msvc/release/horizon-launcher.exe'
-          python ../tools/check_imports.py $launcher
-          $output = & $launcher --version 2>&1
-          if ($LASTEXITCODE -ne 0 -or -not $output) { throw 'horizon-launcher --version failed' }
-          Write-Output ($output -join "`n")
-      - name: Build a native-mod game with the launcher's managed toolchain
-        working-directory: launcher
-        shell: pwsh
-        env:
-          HORIZON_LAUNCHER_HOME: ${{ runner.temp }}\horizon-native-arm64-toolchain
-          HORIZON_NATIVE_TARGET_DIR: ${{ runner.temp }}\horizon-native-arm64-toolchain\target
-        run: |
-          $ErrorActionPreference = 'Stop'
-          cargo test --release --locked --target aarch64-pc-windows-msvc --lib rust_toolchain::tests::managed_arm64_toolchain_builds_the_game -- --ignored --exact --nocapture
-          $client = Join-Path $env:HORIZON_NATIVE_TARGET_DIR 'fast/horizon-client.exe'
-          python ../tools/check_pe_arch.py arm64 $client
-          python ../tools/check_imports.py $client
+          cargo +stable test --locked --lib
   # Most pull requests leave the harnesses to parity-main, which runs them on main a batch of merges at a time
   # (.github/workflows/parity-main.yml; releases wait for it). A pull request still runs them itself when it changes
   # a harness, an oracle, a probe or the runner, or carries the run-parity label (run-parity.yml, when it is added).
   parity-scope:
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
-    # A git diff of this repository's own branch: one of our small runners (horizon-light, docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    # A git diff of this repository's own branch: one of playhorizon's small runners (docs/ci-runners.md).
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     outputs:
       run: ${{ steps.scope.outputs.run }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
@@ -276,7 +162,7 @@ jobs:
         run: |
           changed=$(git diff --name-only "$(git merge-base "$BASE_SHA" HEAD)" HEAD)
           harness=$(grep -E '^(tools/test_[a-z0-9_]+_parity\.py|tools/(parity[a-z_]*|lab)\.py|tools/parity_hosts\.json|mods/horizon/src/test/|crates/[^/]+/examples/|crates/horizon-client/src/game/[a-z_]*(fixture|harness)\.rs|\.github/workflows/parity[a-z-]*\.yml)' <<< "$changed" || true)
-          if [ -n "$harness" ] || [[ " $LABELS " == *" run-parity "* ]] || [[ " $LABELS " == *" frame-identity "* ]]; then
+          if [ -n "$harness" ] || [[ " $LABELS " == *" run-parity "* ]]; then
             echo "run=true" >> "$GITHUB_OUTPUT"
             echo "The pull request runs its harnesses: ${harness:-label run-parity}"
           else
@@ -291,7 +177,6 @@ jobs:
       base: ${{ github.event.pull_request.base.sha }}
       head: ${{ github.event.pull_request.head.sha }}
       full: ${{ contains(github.event.pull_request.labels.*.name, 'full-parity') }}
-      frame_identity: ${{ contains(github.event.pull_request.labels.*.name, 'frame-identity') }}
   # Horizon never downloads the game. These jobs need a self-hosted Linux runner
   # (label horizon-game) holding the maintainer's own copy: the official launcher's
   # game directory in HORIZON_MINECRAFT_DIR and the pinned server jar in
@@ -300,13 +185,13 @@ jobs:
     if: github.event_name == 'workflow_dispatch'
     runs-on: [self-hosted, linux, horizon-game]
     steps:
-      - uses: actions/checkout@v7
-      - uses: actions/setup-python@v7
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
       - name: Install Rust toolchain
         run: rustup toolchain install stable --profile minimal
-      - uses: actions/setup-java@v6
+      - uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: '25'
@@ -648,11 +533,11 @@ jobs:
     if: github.event_name == 'workflow_dispatch'
     runs-on: [self-hosted, linux, horizon-game]
     steps:
-      - uses: actions/checkout@v7
-      - uses: actions/setup-python@v7
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
-      - uses: actions/setup-java@v6
+      - uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: '25'

.github/workflows/claim-command.yml

@@ -29,14 +29,14 @@ jobs:
     # the skipped runs of ordinary comments must not cancel a waiting one.
     concurrency:
       group: claim-${{ github.event.issue.number }}
-    # One of our small runners (horizon-light), out of GitHub's pool: main's script only (docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    # One of playhorizon's small runners, out of GitHub's shared pool: main's script only (docs/ci-runners.md).
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     timeout-minutes: 5
     permissions:
       contents: read
       issues: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: false
@@ -50,22 +50,20 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           BODY: ${{ github.event.comment.body }}
           AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
           ISSUE: ${{ github.event.issue.number }}
           COMMENT_ID: ${{ github.event.comment.id }}
           REPO: ${{ github.repository }}
         run: python3 tools/ci/claim_command.py command
   release:
     if: github.event_name != 'issue_comment' && github.repository == 'horizon-rust/horizon'
-    # One of our small runners (horizon-light), out of GitHub's pool: main's script only (docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    # One of playhorizon's small runners, out of GitHub's shared pool: main's script only (docs/ci-runners.md).
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     timeout-minutes: 10
     permissions:
       contents: read
       issues: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: false

.github/workflows/game-build.yml

@@ -1,6 +1,6 @@
 name: game build
-# Builds the game for every platform from `ref`: the Java exporters, then Linux and the Linux server, Windows x64
-# and ARM64 on GitHub, and macOS on the Mac mini's runner with a 1500-frame offscreen run of a new world (smoke-test.json): Apple
+# Builds the game for every platform from `ref`: the Java exporters, then Linux and the Linux server and Windows on
+# GitHub, macOS on the Mac mini's runner with a 1500-frame offscreen run of a new world (smoke-test.json): Apple
 # Silicon, and Intel cross-built there for x86_64-apple-darwin and checked under Rosetta 2 (#1161). Called by
 # release.yml (the releases) and nightly-build.yml (the opt-in Nightly), always from main's copy of this file: the
 # caller's commit, never the one being built. It holds no secrets: signing the checksums is the callers' own job,
@@ -45,7 +45,7 @@ jobs:
     # Three full preparations (two isolated, one batched) besides the compile.
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.ref }}
           persist-credentials: false
@@ -73,7 +73,7 @@ jobs:
             ! \( -name '*.class' \( -path 'exporters/server/dev/horizonlab/parity/*' -o -path 'exporters/client/dev/horizonlab/parity/*' \) \))
           [ -z "$stray" ] || { echo "::error::not one of our classes: $stray"; exit 1; }
           python3 tools/check_prepare_exporters.py --binary target/release/horizon-prepare
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: original-exporters
           path: exporters/
@@ -83,10 +83,6 @@ jobs:
   build:
     needs: exporters
     name: build ${{ matrix.name }}
-    # Windows ARM64 and musl are new: a failure never holds the other platforms' release (the signing job
-    # needs this job, and a failed entry of it would fail it). The release steps leave the missing
-    # optional archives out with a warning.
-    continue-on-error: ${{ matrix.name == 'windows-arm64' || matrix.name == 'linux-musl' }}
     strategy:
       fail-fast: false
       matrix:
@@ -98,28 +94,13 @@ jobs:
             # The server build too: packaging/server/install.sh installs it on Linux.
             server_dir: horizon-server-linux-x86_64
             server_asset: horizon-server-linux-x86_64.tar.gz
-          - name: linux-musl
-            os: ubuntu-22.04
-            musl: true
-            dir: horizon-linux-musl-x86_64
-            asset: horizon-linux-musl-x86_64.tar.gz
           - name: windows
             os: windows-latest
             dir: horizon-windows-x64
             asset: horizon-windows-x64.zip
             exe: .exe
-            pe_arch: x64
             # The C runtime linked in, so the game runs without the Visual C++ redistributable.
             rustflags: -C target-feature=+crt-static
-          - name: windows-arm64
-            os: windows-11-vs2026-arm
-            target: aarch64-pc-windows-msvc
-            dir: horizon-windows-arm64
-            asset: horizon-windows-arm64.zip
-            exe: .exe
-            pe_arch: arm64
-            # The ARM64 runner builds and runs native ARM64 executables; keep the C runtime in the archive.
-            rustflags: -C target-feature=+crt-static
           - name: macos
             mac: true
             dir: horizon-macos-arm64
@@ -147,7 +128,7 @@ jobs:
       run:
         shell: bash
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.ref }}
           persist-credentials: false
@@ -160,29 +141,21 @@ jobs:
         with:
           targets: ${{ matrix.target }}
       - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted' && !matrix.musl
+        if: runner.environment == 'github-hosted'
         with:
           # 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' && !matrix.musl
+        if: runner.os == 'Linux'
         run: sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
       - name: Build the client, horizon-ctl, horizon-prepare and horizon-server
-        if: ${{ !matrix.musl }}
         run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
       - name: Every program the release folder takes was built
-        if: ${{ !matrix.musl }}
         run: |
           for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do
             test -f "$BIN/$binary${{ matrix.exe }}" || { echo "::error::$BIN/$binary${{ matrix.exe }} is missing"; exit 1; }
           done
-      - name: Verify Windows executable architecture
-        if: runner.os == 'Windows'
-        run: |
-          python tools/check_pe_arch.py "${{ matrix.pe_arch }}" \
-            "$BIN/horizon-client${{ matrix.exe }}" "$BIN/horizon-ctl${{ matrix.exe }}" \
-            "$BIN/horizon-prepare${{ matrix.exe }}" "$BIN/horizon-server${{ matrix.exe }}"
       - name: The signing keychain, unlocked
         if: runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != '' && inputs.developer_id
         env:
@@ -200,7 +173,6 @@ jobs:
             codesign --verify --strict --verbose=2 "$BIN/$binary"
           done
       - name: Only system libraries
-        if: ${{ !matrix.musl }}
         # Windows: no non-system DLL (a "DLL not found" dialog on some players' machines). Linux: the standard
         # loader and libraries every desktop distribution has. macOS: only the system's own libraries.
         run: |
@@ -216,14 +188,13 @@ jobs:
       - name: Baseline x86-64 CPUs only
         # No POPCNT or LZCNT at all (the script says why only those): a C library's count intrinsic killed the
         # game before main on a Core 2 (#7264). Not the Mac builds: every Intel Mac that runs macOS 11 has both.
-        if: runner.os != 'macOS' && matrix.pe_arch != 'arm64' && !matrix.musl
+        if: runner.os != 'macOS'
         run: |
           set -euo pipefail
           rustup component add llvm-tools
           ${{ runner.os == 'Windows' && 'python' || 'python3' }} tools/check_cpu_baseline.py \
             $(for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do echo "$BIN/$binary${{ matrix.exe }}"; done)
       - name: Every program starts
-        if: ${{ !matrix.musl }}
         run: |
           set -euo pipefail
           bin=$BIN
@@ -268,26 +239,18 @@ jobs:
           # Published with the release; the publish job checks it again before it publishes anything.
           cp "$home/smoke.json" "$RUNNER_TEMP/smoke-test.json"
       # One smoke-test.json per build, the Apple Silicon one's; the Intel build must pass its own run too.
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         if: runner.environment == 'self-hosted' && !matrix.target
         with:
           name: smoke-test.json
           path: ${{ runner.temp }}/smoke-test.json
           if-no-files-found: error
           retention-days: 3
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           name: original-exporters
           path: exporters
-      - name: Build, check and package for musl in Alpine
-        if: matrix.musl
-        # Run Docker on the Ubuntu host: JavaScript actions themselves require glibc.
-        run: |
-          docker run --rm -v "$PWD:/work" -w /work \
-            -e HORIZON_VERSION -e HORIZON_NIGHTLY \
-            rust:alpine3.22 sh tools/ci/build-musl.sh
       - name: Package
-        if: ${{ !matrix.musl }}
         run: |
           set -euo pipefail
           cargo run --locked -p xtask -- package "$BIN/horizon-client${{ matrix.exe }}" "dist/${{ matrix.dir }}"
@@ -314,7 +277,7 @@ jobs:
             codesign --verify --strict "dist/${{ matrix.dir }}/$binary"
           done
           packaging/macos/notarize.sh "dist/${{ matrix.asset }}"
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.asset }}
           path: dist/${{ matrix.asset }}
@@ -336,7 +299,7 @@ jobs:
           rm -f "${{ matrix.server_asset }}"
           tar czf "${{ matrix.server_asset }}" "${{ matrix.server_dir }}"
           ls -l "${{ matrix.server_asset }}"
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         if: matrix.server_asset
         with:
           name: ${{ matrix.server_asset }}

.github/workflows/launcher.yml

@@ -1,5 +1,5 @@
 name: launcher
-# Builds the launcher on Linux, macOS, Windows x64 and ARM64, and releases it by itself (docs/release-flow.md): after a
+# Builds the launcher on Linux, macOS and Windows, and releases it by itself (docs/release-flow.md): after a
 # push to main that changes the launcher or a crate it builds in (the paths below),
 # every 10 minutes (a release waiting for merges to settle goes out) and by hand, tools/release_train.py decides as
 # for the game.
@@ -15,9 +15,8 @@ name: launcher
 # under Rosetta 2 (#1161). With the repository variable MACOS_SIGN_IDENTITY set, Horizon.app and the .dmg are signed with
 # Developer ID, notarized and stapled, from the runner's signing keychain (packaging/macos/README.md);
 # unset (forks), they are signed ad hoc.
-# Windows ships each architecture's launcher in its ZIP (what a launcher updates itself from) and as
-# horizon-launcher-setup.exe or horizon-launcher-setup-arm64.exe, which opens the per-user installer instead of Home
-# (launcher/src/installer.rs).
+# Windows ships the launcher's own binary twice: in the ZIP (what a launcher updates itself from) and as
+# horizon-launcher-setup.exe, which opens the per-user installer instead of Home (launcher/src/installer.rs).
 #   gh workflow run launcher --ref <branch>                    # dry run: builds everything, publishes nothing
 #   gh workflow run launcher --ref main -f dry_run=false -f force=true
 
@@ -74,7 +73,7 @@ jobs:
       version: ${{ steps.decide.outputs.version }}
       dry_run: ${{ steps.mode.outputs.dry_run }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - id: mode
@@ -103,10 +102,6 @@ jobs:
     needs: decide
     if: needs.decide.outputs.release == 'true'
     name: build ${{ matrix.name }}
-    # Windows ARM64 is new: its failure never holds the other platforms' release (the signing job
-    # needs this job, and a failed entry of it would fail it). The release steps leave the missing
-    # ARM64 files out with a warning.
-    continue-on-error: ${{ matrix.name == 'windows-arm64' }}
     strategy:
       fail-fast: false
       matrix:
@@ -130,20 +125,9 @@ jobs:
             os: windows-latest
             asset: horizon-launcher-windows-x64.zip
             binary: horizon-launcher.exe
-            pe_arch: x64
-            setup_asset: horizon-launcher-setup.exe
             # The C runtime linked in: without it the launcher asks for VCRUNTIME140.dll,
             # which only the Visual C++ redistributable installs.
             rustflags: -C target-feature=+crt-static
-          - name: windows-arm64
-            os: windows-11-vs2026-arm
-            target: aarch64-pc-windows-msvc
-            asset: horizon-launcher-windows-arm64.zip
-            binary: horizon-launcher.exe
-            pe_arch: arm64
-            setup_asset: horizon-launcher-setup-arm64.exe
-            # The C runtime linked in, so the standalone ARM64 launcher needs no redistributable.
-            rustflags: -C target-feature=+crt-static
     runs-on: ${{ matrix.mac && (vars.MAC_RUNNER || 'ludovics-mac-mini') || matrix.os }}
     # Notarizing the app and then the .dmg can take a few minutes each.
     timeout-minutes: ${{ matrix.mac && 60 || 40 }}
@@ -166,7 +150,7 @@ jobs:
         working-directory: launcher
         shell: bash
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: ${{ needs.decide.outputs.head }}
           persist-credentials: false
@@ -198,9 +182,6 @@ jobs:
       # Every test target (the library, the binary, tests/), on each system the launcher ships for.
       - run: cargo test --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} ${LAUNCHER_FEATURES:+--features "$LAUNCHER_FEATURES"}
       - run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} ${LAUNCHER_FEATURES:+--features "$LAUNCHER_FEATURES"}
-      - name: Verify Windows executable architecture
-        if: runner.os == 'Windows'
-        run: python ../tools/check_pe_arch.py "${{ matrix.pe_arch }}" "$BIN/${{ matrix.binary }}"
       - name: The version is the release's
         run: |
           out=$("$BIN/${{ matrix.binary }}" --version)
@@ -231,8 +212,7 @@ jobs:
           "$launcher" links --json
           # The Intel Mac launcher can come out before any game build has its asset (#1161): then there is nothing
           # to install yet. Only that entry skips, and only on a version list that parsed and had no build here
-          # (exit 3); a launcher or a script that fails still fails the step. The Windows ARM64 launcher always has
-          # one: it installs the x64 build where a release has no ARM64 one (backend.rs, GAME_FALLBACK).
+          # (exit 3); a launcher or a script that fails still fails the step.
           if [[ "${{ matrix.name }}" == macos-x64 ]]; then
             versions=$(retry "$launcher" --json versions)
             no_build='import json, sys; sys.exit(3 if not any(r["available_here"] for r in json.load(sys.stdin)) else 0)'
@@ -256,11 +236,6 @@ jobs:
           # release linked to a Nix store is a warning here, not a broken launcher.
           soft() { if [[ "$RUNNER_OS" == "Linux" ]]; then "$@" || echo "::warning::$* failed"; else "$@"; fi; }
           if [[ "$RUNNER_OS" == "Windows" ]]; then
-            if ! python ../tools/check_pe_arch.py "${{ matrix.pe_arch }}" "$client"; then
-              # A Nightly without an ARM64 build: the ARM64 launcher installs the x64 one (backend.rs, GAME_FALLBACK).
-              [[ "${{ matrix.pe_arch }}" == arm64 ]] && python ../tools/check_pe_arch.py x64 "$client" || exit 1
-              echo "::warning::the latest game has no ARM64 build: the launcher installed the x64 one"
-            fi
             python ../tools/check_imports.py "$client"
           elif [[ "$RUNNER_OS" == "Linux" ]]; then
             soft python3 ../tools/check_imports.py "$client"
@@ -320,8 +295,8 @@ jobs:
         # installer instead of Home (launcher/src/installer.rs). Its name is what makes it the setup,
         # so the ZIP's copy stays the launcher. Both go into the release's signed SHA256SUMS.
         if: runner.os == 'Windows'
-        run: cp "$BIN/${{ matrix.binary }}" "out/${{ matrix.setup_asset }}"
-      - uses: actions/upload-artifact@v7
+        run: cp "$BIN/${{ matrix.binary }}" out/horizon-launcher-setup.exe
+      - uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.asset }}
           path: launcher/out/*
@@ -339,12 +314,12 @@ jobs:
     # tools/ci/sign_release.sh, which calls only the runner's sha256sum and OpenSSL (docs/release-flow.md).
     environment: ${{ needs.decide.outputs.dry_run != 'true' && 'release' || '' }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           sparse-checkout: tools/ci/sign_release.sh
           sparse-checkout-cone-mode: false
           persist-credentials: false
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           path: dist
           pattern: horizon-launcher-*
@@ -356,13 +331,13 @@ jobs:
           EPHEMERAL: ${{ needs.decide.outputs.dry_run == 'true' && 'yes' || '' }}
           TAG: ${{ needs.decide.outputs.tag }}
         run: bash tools/ci/sign_release.sh "$TAG" dist/horizon-launcher-*
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: signature
           path: dist/SHA256SUMS*
           if-no-files-found: error
           retention-days: 3
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         if: needs.decide.outputs.dry_run == 'true'
         with:
           name: ephemeral.pub
@@ -376,7 +351,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Notes
@@ -386,7 +361,7 @@ jobs:
           python3 tools/release_train.py notes --kind launcher --tag "${{ needs.decide.outputs.tag }}" \
             --head "${{ needs.decide.outputs.head }}" --out notes > /dev/null
           { echo "## $(cat notes/title.txt)"; echo; cat notes/body.md; } >> "$GITHUB_STEP_SUMMARY"
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           path: dist
           merge-multiple: true
@@ -398,13 +373,6 @@ jobs:
           key=(); [[ -n "$EPHEMERAL" ]] && key=(--key "$(cat dist/ephemeral.pub)")
           cargo run --locked --quiet -p horizon-release-sign -- verify --tag "$TAG" --publishing "${key[@]}" dist
       # Never marked latest: Horizon's own releases stay the repository's latest.
-      - name: The Windows ARM64 launcher, if it built
-        # Its build may fail without holding the release (continue-on-error): the release then has no ARM64
-        # files, and ARM64 launchers stay on their version until one has (backend::launcher_update_from).
-        run: |
-          for file in horizon-launcher-windows-arm64.zip horizon-launcher-setup-arm64.exe; do
-            [[ -f "dist/$file" ]] || echo "::warning::$file is missing: this release goes out without it"
-          done
       - name: Publish ${{ needs.decide.outputs.tag }}
         if: needs.decide.outputs.dry_run != 'true'
         env:
@@ -419,7 +387,7 @@ jobs:
         run: |
           echo "Would publish ${{ needs.decide.outputs.tag }} at ${{ needs.decide.outputs.head }}: $(cat notes/title.txt)"
           ls -l dist
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: launcher-release-notes
           path: notes/

.github/workflows/mod-registry.yml

@@ -15,23 +15,17 @@ on:
       - '.github/workflows/mod-registry.yml'
 permissions:
   contents: read
-concurrency:
-  group: mod-registry-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 jobs:
   check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 20
     defaults:
       run:
         working-directory: crates/horizon-mod-registry
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
       - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      # Ours keep their build folder between jobs.
       - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
         with:
           workspaces: crates/horizon-mod-registry
           save-if: ${{ github.ref == 'refs/heads/main' }}

.github/workflows/mojang-republish.yml

@@ -21,11 +21,10 @@ concurrency:
 
 jobs:
   check:
-    # One of our small runners (label horizon-light, docs/ci-runners.md): main's script, Mojang's public manifest.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
       - name: Check the manifest
         env:
           GH_TOKEN: ${{ github.token }}

.github/workflows/native-hook-stamp.yml

@@ -24,7 +24,7 @@ jobs:
       pull-requests: write
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           fetch-depth: 0
@@ -52,8 +52,4 @@ jobs:
             git fetch origin "+refs/heads/$branch:refs/remotes/origin/$branch"
           fi
           git push --force-with-lease origin "$branch"
-          # The repo doesn't let GitHub Actions open pull requests (that setting would also let it approve them):
-          # the branch is pushed, and a maintainer opens the PR from it.
-          if ! gh pr create --base main --head "$branch" --title 'Stamp native hook API fragments' --body 'Assign API numbers to the pending native hook fragments. Close and reopen this PR to run CI.'; then
-            echo "::warning::Stamped fragments are on $branch; open a pull request from it (GitHub Actions may not open one here)."
-          fi
+          gh pr create --base main --head "$branch" --title 'Stamp native hook API fragments' --body 'Assign API numbers to the pending native hook fragments. Close and reopen this PR to run CI.'

.github/workflows/nightly-build.yml

@@ -92,7 +92,7 @@ jobs:
       source_tag: ${{ steps.pick.outputs.source_tag }}
       dry_run: ${{ steps.mode.outputs.dry_run }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -124,14 +124,14 @@ jobs:
         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@v7
+      - 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@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: nightly-notes
           path: nightly-notes.md
@@ -155,42 +155,32 @@ jobs:
     # The key's only job: main's sign_release.sh hashes the archives and signs with the runner's OpenSSL.
     environment: ${{ needs.pick.outputs.dry_run != 'true' && 'release' || '' }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           sparse-checkout: tools/ci/sign_release.sh
           sparse-checkout-cone-mode: false
           persist-credentials: false
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           path: dist
           pattern: horizon-*
           merge-multiple: true
-      - name: Sign the checksums for the nightly channel (SHA256SUMS.sig) and for this build (SHA256SUMS.v2.sig)
-        # SHA256SUMS.sig is for launchers from before v2 (signed for "nightly"); SHA256SUMS.v2.sig is signed for
-        # nightly-<date>-<commit>, the version the release title names, which current launchers and servers
-        # require (docs/security.md, "Nightly signatures"). The publish step titles the release from the same values.
+      - name: Sign the checksums (SHA256SUMS, SHA256SUMS.sig) for the nightly channel
         env:
           RELEASE_SIGNING_KEY: ${{ secrets.RELEASE_SIGNING_KEY }}
           RELEASE_SIGNING_KEY_NEXT: ${{ secrets.RELEASE_SIGNING_KEY_NEXT }}
           EPHEMERAL: ${{ needs.pick.outputs.dry_run == 'true' && 'yes' || '' }}
-          ALSO_FOR: nightly-${{ needs.pick.outputs.date }}-${{ needs.pick.outputs.short }}
         run: |
-          # Windows ARM64's build may fail without holding the Nightly (game-build.yml): then it is left out.
-          arm64=(); if [[ -f dist/horizon-windows-arm64.zip ]]; then arm64=(dist/horizon-windows-arm64.zip)
-          else echo "::warning::horizon-windows-arm64.zip is missing: SHA256SUMS goes out without it"; fi
-          musl=(); if [[ -f dist/horizon-linux-musl-x86_64.tar.gz ]]; then musl=(dist/horizon-linux-musl-x86_64.tar.gz)
-          else echo "::warning::horizon-linux-musl-x86_64.tar.gz is missing: SHA256SUMS goes out without it"; fi
           bash tools/ci/sign_release.sh nightly dist/horizon-linux-x86_64.tar.gz dist/horizon-windows-x64.zip \
-            "${arm64[@]}" "${musl[@]}" \
             dist/horizon-macos-arm64.zip dist/horizon-macos-x64.zip dist/horizon-server-linux-x86_64.tar.gz \
             dist/horizon-source.tar.gz
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: signature
           path: dist/SHA256SUMS*
           if-no-files-found: error
           retention-days: 3
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         if: needs.pick.outputs.dry_run == 'true'
         with:
           name: ephemeral.pub
@@ -205,24 +195,19 @@ jobs:
       contents: write
       issues: read          # the open release-blocker issues (gate)
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           path: dist
           merge-multiple: true
-      - name: The signatures, checked as launchers check them
+      - name: The signature, checked as launchers check it
         env:
           EPHEMERAL: ${{ needs.pick.outputs.dry_run == 'true' && 'yes' || '' }}
-          DATE: ${{ needs.pick.outputs.date }}
-          SHORT: ${{ needs.pick.outputs.short }}
         run: |
           key=(); [[ -n "$EPHEMERAL" ]] && key=(--key "$(cat dist/ephemeral.pub)")
           cargo run --locked --quiet -p horizon-release-sign -- verify --tag nightly --publishing "${key[@]}" dist
-          # The version's own signature, which current launchers require: the title below names the same version.
-          cargo run --locked --quiet -p horizon-release-sign -- verify --tag "nightly-${DATE}-${SHORT}" \
-            --signature SHA256SUMS.v2.sig --publishing "${key[@]}" dist
       - name: Ready to publish (the smoke test drew a world, no release-blocker is open)
         # Right before publishing, as for a release: an issue labelled while the builds ran still holds it. A dry run
         # only reports what a real run would do (that is how a blocker's fix is tried).
@@ -239,37 +224,18 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
           SHA: ${{ needs.pick.outputs.sha }}
-          SHORT: ${{ needs.pick.outputs.short }}
           DATE: ${{ needs.pick.outputs.date }}
           SOURCE_TAG: ${{ needs.pick.outputs.source_tag }}
         run: |
           set -euo pipefail
           python3 tools/ci/nightly.py rotate
           signature=(); [[ -f dist/SHA256SUMS.sig ]] && signature=(dist/SHA256SUMS.sig)
-          [[ -f dist/SHA256SUMS.v2.sig ]] && signature+=(dist/SHA256SUMS.v2.sig)
-          # The title is what launchers parse (strictly) into the version SHA256SUMS.v2.sig is signed for.
-          [[ "${SHA:0:7}" == "$SHORT" ]] || { echo "::error::the build's commit isn't the one signed"; exit 1; }
-          # The ARM64 archive only when its build succeeded (the sign job left it out of SHA256SUMS otherwise).
-          arm64=()
-          if [[ -f dist/horizon-windows-arm64.zip ]]; then
-            arm64=("dist/horizon-windows-arm64.zip#Game files the launcher installs (Nightly): Windows ARM64 (horizon-windows-arm64.zip)")
-          else
-            echo "::warning::horizon-windows-arm64.zip is missing: the Nightly goes out without it (ARM64 launchers install the x64 build)"
-          fi
-          musl=()
-          if [[ -f dist/horizon-linux-musl-x86_64.tar.gz ]]; then
-            musl=("dist/horizon-linux-musl-x86_64.tar.gz#Game files for musl Linux (horizon-linux-musl-x86_64.tar.gz)")
-          else
-            echo "::warning::horizon-linux-musl-x86_64.tar.gz is missing: the Nightly goes out without it"
-          fi
           # A pre-release, never GitHub's latest: the latest stays the last vX.Y.Z, which launchers and servers from
           # before the Nightly-only switch keep (they don't read Nightlies).
           gh release create nightly --prerelease --latest=false --target "$SHA" \
             --title "Nightly $DATE · ${SHA:0:7}" --notes-file dist/nightly-notes.md \
             "dist/horizon-linux-x86_64.tar.gz#Game files the launcher installs (Nightly): Linux (horizon-linux-x86_64.tar.gz)" \
-            "${musl[@]}" \
             "dist/horizon-windows-x64.zip#Game files the launcher installs (Nightly): Windows (horizon-windows-x64.zip)" \
-            "${arm64[@]}" \
             "dist/horizon-macos-arm64.zip#Game files the launcher installs (Nightly): macOS on Apple Silicon (horizon-macos-arm64.zip)" \
             "dist/horizon-macos-x64.zip#Game files the launcher installs (Nightly): macOS on Intel (horizon-macos-x64.zip)" \
             "dist/horizon-server-linux-x86_64.tar.gz#Nightly dedicated server for Linux (horizon-server-linux-x86_64.tar.gz)" \
@@ -287,8 +253,7 @@ jobs:
     # 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'
-    # One comment, no checkout and no secret: one of our small runners (label horizon-light, docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 5
     permissions:
       issues: write

.github/workflows/nightly-command.yml

@@ -27,7 +27,7 @@ jobs:
       issues: write         # answers in the thread
       pull-requests: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: false
@@ -41,8 +41,6 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           BODY: ${{ github.event.comment.body }}
           AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
           ISSUE: ${{ github.event.issue.number }}
           COMMENT_URL: ${{ github.event.comment.html_url }}
         run: python3 tools/ci/nightly_set.py command

.github/workflows/nightly.yml

@@ -48,7 +48,7 @@ jobs:
           else
             echo "run=true" >> "$GITHUB_OUTPUT"
           fi
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         if: steps.when.outputs.run == 'true'
         with:
           fetch-depth: 0
@@ -82,7 +82,7 @@ jobs:
         run: python3 tools/ci/parity_issues.py --since "${{ steps.audit.outputs.since }}" ${{ inputs.dry_run && '--dry-run' || '' }} | tee -a "$GITHUB_STEP_SUMMARY"
       - name: Logs of the failed harnesses
         if: steps.when.outputs.run == 'true' && steps.audit.outputs.exit != '0'
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: nightly-parity-logs
           path: .local/parity-runner/logs/

.github/workflows/overlap-note.yml

@@ -19,15 +19,15 @@ jobs:
     concurrency:
       group: overlap-note-${{ github.event.pull_request.number }}
       cancel-in-progress: true
-    # One of our small runners (horizon-light), out of GitHub's pool: it runs main's script only (above), so a fork's
+    # One of playhorizon's small runners, out of GitHub's shared pool: it runs main's script only (above), so a fork's
     # pull request runs none of its code there (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     timeout-minutes: 10
     permissions:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           fetch-depth: 0

.github/workflows/pack-bench.yml

@@ -22,24 +22,17 @@ env:
 
 jobs:
   bench:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md): the branch and the base on the same machine, as
-    # the comparison needs. SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 90
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Install Rust and the ALSA and udev headers
-        env:
-          HOSTED: ${{ runner.environment == 'github-hosted' }}
         run: |
-          if [ "$HOSTED" = true ]; then
-            sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
-          fi
+          sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
           rustup toolchain install stable --profile minimal
       - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
         with:
           shared-key: pack-bench
       - name: Bench the branch
@@ -53,15 +46,11 @@ jobs:
           SCALE: ${{ inputs.scale || '1' }}
         run: |
           git fetch https://github.com/horizon-rust/horizon.git "$BASE"
-          # Our runners keep the folder beside the checkout between jobs.
-          git worktree remove --force ../base 2> /dev/null || rm -rf ../base
-          git worktree prune
           git worktree add ../base FETCH_HEAD
           cp crates/horizon-client-render/examples/pack_load_bench.rs ../base/crates/horizon-client-render/examples/
           # A bench row that times a function the base lacks keeps it from building there: then
           # the branch's own rows compare the two ways.
-          target=${CARGO_TARGET_DIR:-$GITHUB_WORKSPACE/target}
-          (cd ../base && CARGO_TARGET_DIR="$target" cargo run --profile fast -p horizon-client-render \
+          (cd ../base && CARGO_TARGET_DIR="$GITHUB_WORKSPACE/target" cargo run --profile fast -p horizon-client-render \
             --example pack_load_bench -- --scale "$SCALE") > base.md \
             || echo "The bench does not build on the base." > base.md
       - name: Summary

.github/workflows/parity-main.yml

@@ -30,7 +30,7 @@ jobs:
     runs-on: [self-hosted, macOS, horizon-parity-main]
     timeout-minutes: 240  # a core-crate batch reruns ~300 harnesses (~60-90 min), a bisect a few rounds of the failures
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.sha }}
           fetch-depth: 0
@@ -69,7 +69,7 @@ jobs:
           python3 tools/parity_main.py bisect "$BASE_SHA" --comment
       - name: Logs of the failed harnesses
         if: steps.harnesses.outcome == 'failure'
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: parity-main-logs
           path: .local/parity-main-logs/

.github/workflows/parity.yml

@@ -20,12 +20,6 @@ on:
           busy the job waits for it.
         type: boolean
         default: false
-      frame_identity:
-        description: >-
-          The pull request carries the frame-identity label: it must leave the picture alone (HDR, shader packs), so
-          the frame_identity harness, which no automatic selection picks, runs too.
-        type: boolean
-        default: false
 permissions:
   contents: read
 env:
@@ -39,7 +33,7 @@ jobs:
     # harnesses at a time) up to a few hours, and any pull request's job may land there.
     timeout-minutes: ${{ inputs.full && 360 || 180 }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           # The commit the event names: a fork's later pushes need another run-parity label. The next step merges
           # main into it.
@@ -93,15 +87,9 @@ jobs:
           PARITY_HOSTS: ''
           BASE_SHA: ${{ steps.merge.outputs.base }}
         run: python3 tools/parity.py --changed "$BASE_SHA" --timeout 2400  # world_spawn takes ~1480 s on a busy runner
-      - name: The pictures this change must leave alone
-        if: ${{ !cancelled() && inputs.frame_identity }}
-        env:
-          PARITY_HOSTS: ''
-          BASE_SHA: ${{ steps.merge.outputs.base }}
-        run: python3 tools/parity.py frame_identity --timeout 2400
       - name: Logs of the failed harnesses
         if: failure()
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
           name: parity-logs
           path: .local/parity-runner/logs/

.github/workflows/pr-labels.yml

@@ -16,15 +16,15 @@ jobs:
   label:
     # Title-only edits change nothing: skip them before a runner starts.
     if: github.event.action != 'edited' || github.event.changes.body != null
-    # One of our small runners (horizon-light), out of GitHub's pool: it runs main's script only (above), so a fork's
+    # One of playhorizon's small runners, out of GitHub's shared pool: it runs main's script only (above), so a fork's
     # pull request runs none of its code there (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "playhorizon-light"]') || 'ubuntu-latest' }}
     timeout-minutes: 5
     permissions:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: false

.github/workflows/release.yml

@@ -53,7 +53,7 @@ jobs:
       urgent: ${{ steps.decide.outputs.urgent }}
       dry_run: ${{ steps.mode.outputs.dry_run }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - id: mode

.github/workflows/run-parity.yml

@@ -27,4 +27,3 @@ jobs:
       base: ${{ github.event.pull_request.base.sha }}
       head: ${{ github.event.pull_request.head.sha }}
       full: ${{ contains(github.event.pull_request.labels.*.name, 'full-parity') }}
-      frame_identity: ${{ contains(github.event.pull_request.labels.*.name, 'frame-identity') }}

.github/workflows/telemetry-server.yml

@@ -15,23 +15,17 @@ on:
       - '.github/workflows/telemetry-server.yml'
 permissions:
   contents: read
-concurrency:
-  group: telemetry-server-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 jobs:
   check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 20
     defaults:
       run:
         working-directory: crates/horizon-telemetry-server
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
       - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      # Ours keep their build folder between jobs.
       - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
         with:
           workspaces: crates/horizon-telemetry-server
           save-if: ${{ github.ref == 'refs/heads/main' }}

.github/workflows/triage-command.yml

@@ -21,15 +21,14 @@ jobs:
       startsWith(github.event.comment.body, '/reopen') ||
       startsWith(github.event.comment.body, '/label') ||
       startsWith(github.event.comment.body, '/unlabel'))
-    # One of our small runners (label horizon-light, docs/ci-runners.md): main's script only, as above.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
+    runs-on: ubuntu-latest
     timeout-minutes: 5
     permissions:
       contents: read
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: false
@@ -43,8 +42,6 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           BODY: ${{ github.event.comment.body }}
           AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
           ISSUE: ${{ github.event.issue.number }}
           REPO: ${{ github.repository }}
           COMMENT_URL: ${{ github.event.comment.html_url }}

AGENTS.md

@@ -9,10 +9,8 @@ Feature → files → harness for the most-changed areas: [docs/architecture.md]
 - **Never commit Mojang's files**: game jars, assets, decompiled source, prepared resources (`.local/`).
   `tools/check_public_tree.py` rejects them; `git config core.hooksPath .githooks` runs it on commit.
 - **Keep your runs away from real player data.** Any game or launcher you start gets fresh `mktemp -d`
-  folders in `HORIZON_HOME` (logs, crash reports, telemetry consent, recordings; not saves), `HORIZON_LAUNCHER_HOME`, `XDG_DATA_HOME` and
-  `XDG_CONFIG_HOME`, plus `HORIZON_LAUNCHER_NO_SELF_UPDATE=1` and `HORIZON_NO_AUDIO=1`. Saves, `options.txt` and
-  caches go in the game folder, by default the working directory: start the game from a scratch folder with
-  `--game-dir` pointing at it, or they land in the repo root, hidden by `.gitignore`. For the
+  folders in `HORIZON_HOME` (the game's data), `HORIZON_LAUNCHER_HOME`, `XDG_DATA_HOME` and
+  `XDG_CONFIG_HOME`, plus `HORIZON_LAUNCHER_NO_SELF_UPDATE=1` and `HORIZON_NO_AUDIO=1`, and, for the
   launcher, `HORIZON_LAUNCHER_TRASH`, `HORIZON_LAUNCHER_CLIPBOARD` and `HORIZON_LAUNCHER_DESKTOP` pointing into the scratch home. Never write to
   `~/.local/share/{applications,horizon,horizon-launcher}` or `~/.local/bin`.
 - **Mark what an agent posts.** A PR body starts with a line naming the person whose agent opened it and
@@ -35,7 +33,6 @@ Feature → files → harness for the most-changed areas: [docs/architecture.md]
 - **No hardcoded user-facing strings.** Keep UI translation-ready from the start. In the launcher (`launcher/`), wrap visible text with `tr("...")` or `trf("... {arg} ...", &[("arg", &val)])` from `crate::i18n` instead of raw string literals or `format!`. In the game, use translation keys (`Text::tr`, `lang::get`), never hardcoded English strings.
 - **Claim before you start**: comment `/claim` on the issue (no issue yet: open one, then claim it). An assigned
   issue is taken: pick another. `/unclaim` when you stop; a claim with no open PR linking it is released after 5 days.
-- **Controllers reach what registers.** Draw controls with a registering helper (`ui::button`, `settings_shell::foot_button`); `graphics_style::button` and `screen_draw::button` only paint, and registering one part of a screen ends its crosshair, so register all of it.
 
 ## Crates
 

CONTRIBUTING.md

@@ -5,8 +5,7 @@ everything is that **it plays exactly like vanilla**. This page is the short ver
 welcome on [Discord](https://discord.gg/playhorizon).
 
 This repository holds the game and the launcher, plus the tools, tests and docs that build, check and release them.
-The website (playhorizon.dev) is built in a separate repository from this one's README, `docs/api/` and roadmap. Anything
-else (videos, Discord and other community material) lives elsewhere.
+The website (playhorizon.dev) is built in a separate repository from this one's README, `docs/api/` and roadmap. Anything else (videos, Discord and other community material) lives elsewhere.
 
 **Where to start: [playhorizon.dev/hub](https://playhorizon.dev/hub).** It shows what is being done now and next
 ([ROADMAP.md](ROADMAP.md) in the repository), the work board, good first tasks, and the forms to report a bug or
@@ -15,25 +14,23 @@ queue (the hub, or `/suggest` on Discord) rather than to issues, which are for b
 
 ## Build it
 
-- **Prerequisites:** Rust (stable), Python 3.10+, JDK 25, and on Linux the ALSA and udev headers
-  (`libasound2-dev libudev-dev`).
-- **Resources:** Horizon never downloads the game; it prepares its resources from your own copy of Minecraft 26.3, as
-  described in [Build from source](README.md#build-from-source).
-- **Commands:**
+You need Rust (stable), Python 3.10+, JDK 25, and on Linux the ALSA and udev headers (`libasound2-dev libudev-dev`).
+Horizon never downloads the game: it prepares its resources from your own copy of Minecraft 26.3, as described in
+[Build from source](README.md#build-from-source).
 
-  ```sh
-  cargo run --release -p horizon-prepare -- --prepare --server-jar ~/Downloads/server.jar
-  cargo run --release -p horizon-client
-  ```
+```sh
+cargo run --release -p horizon-prepare -- --prepare --server-jar ~/Downloads/server.jar
+cargo run --release -p horizon-client
+```
 
-- **Launcher:** its own Cargo workspace in `launcher/` (`cd launcher && cargo run`; on NixOS, `nix-shell` first).
+The launcher is its own Cargo workspace in `launcher/` (`cd launcher && cargo run`; on NixOS, `nix-shell` first).
 
 ## Vanilla first
 
-Wherever vanilla has a feature, vanilla is the specification, down to the order of random calls. "Parity" here means
-Horizon gives the same results as the pinned 26.3 client and server for the same inputs, checked by a **harness**: a
-`tools/test_*_parity.py` script that runs a small Java oracle against the real game and a Rust probe against Horizon,
-and compares their outputs. There are about 290 of them.
+Wherever vanilla has a feature, vanilla is the specification, down to the order of random calls. "Parity" here
+means Horizon gives the same results as the pinned 26.3 client and server for the same inputs, checked by a
+**harness**: a `tools/test_*_parity.py` script that runs a small Java oracle against the real game and a Rust
+probe against Horizon, and compares their outputs. There are about 290 of them.
 
 - **Read the vanilla code before writing Horizon's.** `tools/rea_vanilla.py` queries the pinned game bytecode:
   `python3 tools/rea_vanilla.py method net.minecraft.world.level.block.DispenserBlock dispenseFrom`.
@@ -44,10 +41,11 @@ and compares their outputs. There are about 290 of them.
   off by default wherever they would change the vanilla look.
 - **Everything players run is Rust.** Python and Java are fine for dev tools and harness drivers in `tools/`, never
   for player-facing code.
-- **No game files in the repo.** Never commit game files, decompiled source or prepared resources (`.local/`):
-  `tools/check_public_tree.py` rejects them (`git config core.hooksPath .githooks` runs it before every commit).
-  The pre-push hook checks the full history reachable from the branches and tags being pushed. Run
-  `python3 tools/check_public_tree.py --history` to audit the history of all local refs.
+
+Never commit game files, decompiled source or prepared resources (`.local/`): `tools/check_public_tree.py` rejects
+them (`git config core.hooksPath .githooks` runs it before every commit).
+The pre-push hook checks the full history reachable from the branches and tags being pushed. Run
+`python3 tools/check_public_tree.py --history` to audit the history of all local refs.
 
 ## Only original code, or code whose license allows it
 
@@ -56,23 +54,24 @@ another project's source may also be read and used, **only when that project's l
 
 - **Allowed:** MIT, MIT-0, BSD-2-Clause, BSD-3-Clause, 0BSD, ISC, zlib, Apache-2.0, Unlicense, and the CC0-1.0
   public-domain dedication. That code may be read, copied or adapted.
-- **Off limits, even to read:** GPL, LGPL (Iris), AGPL, MPL, EPL, Polyform (Sodium), the Creative Commons licenses
-  (CC BY, CC BY-SA, CC BY-NC and the others; CC0 is a public-domain dedication, not one of them), custom or
-  "source available" licenses, all rights reserved (OptiFine), and any project with no license or an unclear one.
-  Don't read, copy, translate or paraphrase their source, and don't send code an AI tool wrote from it. Being able
-  to download a mod or a pack does not give you the right to read its files.
+- **Everything else is off limits, even to read:** GPL, LGPL (Iris), AGPL, MPL, EPL, Polyform (Sodium), the Creative
+  Commons licenses (CC BY, CC BY-SA, CC BY-NC and the others; CC0 is a public-domain dedication, not one of them),
+  custom or "source available" licenses, all rights reserved (OptiFine), and any project with no license or an
+  unclear one. Don't read, copy, translate or paraphrase their source, and don't send code an AI tool
+  wrote from it. Being able to download a mod or a pack does not give you the right to read its files.
 - **Check the license yourself.** Read the LICENSE file at the commit you use and the header of each file you take:
-  some repositories mix licenses, and a file under another license is off limits. A license that changed: the one at
-  your commit counts. In doubt, don't: ask in #contributors first.
+  some repositories mix licenses, and a file under another license is off limits. A license that changed: the one
+  at your commit counts. In doubt, don't: ask in #contributors first.
 - **Say it in the pull request:** the project, a link to the commit, its license, and what you read or copied. A
   pull request that used another project's source without saying so is closed.
 - **Copied or adapted code** keeps its copyright line and license notice at the top of the file, and gets an entry
   in [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md). Apache-2.0 code also keeps its NOTICE text and says what
   was changed.
 
-User documentation and file formats are fine to read, and packs and mods are fine to run and observe, whatever their
-license. Shader packs are a clean-room rewrite of the pack format, produced from a written description of it (see
-#1561); they carry no foreign source, and the rules above still apply to anything you read while working on them.
+User documentation and file formats are fine to read, and packs and mods are fine to run and observe, whatever
+their license. Shader packs were removed on 24 October 2026 (#1561) because their code had been written from
+another project's source; they come back only as a clean-room rewrite from a written description of the pack
+format.
 
 ## Before asking for review
 
@@ -88,8 +87,8 @@ your change can affect. Without the vanilla data on your machine it lists those
 `--quick` skips the harnesses. It exits non-zero when something fails.
 
 For the game workspace, Clippy checks all targets of the touched crates and their transitive workspace dependents,
-including examples. The dependency scope includes optional, platform, build and development dependencies. Tests run
-library, binary, integration and doc tests without building unrelated example executables. Shared Cargo
+including examples. The dependency scope includes optional, platform, build and development dependencies.
+Tests run library, binary, integration and doc tests without building unrelated example executables. Shared Cargo
 configuration and toolchain changes select the whole workspace; CI also keeps its workspace-wide checks.
 
 ## Claim before you start
@@ -124,8 +123,8 @@ it (edited on every push, never repeated): talk to its author in the thread befo
   that label, and area labels (`launcher`, `mobs`, `worldgen`, `rendering`...) from the paths you change.
   `label:parity` is the list of real progress toward vanilla.
 - **Release labels** (we set them if you can't): `feature` also puts it under "New" in the 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.
+  `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)).

Cargo.lock

@@ -147,12 +147,6 @@ dependencies = [
  "x11rb",
 ]
 
-[[package]]
-name = "arcstr"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03918c3dbd7701a85c6b9887732e2921175f26c350b4563841d0958c21d57e6d"
-
 [[package]]
 name = "arrayref"
 version = "0.3.9"
@@ -309,21 +303,6 @@ dependencies = [
  "objc2 0.6.5",
 ]
 
-[[package]]
-name = "btoi"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b5ab9db53bcda568284df0fd39f6eac24ad6f7ba7ff1168b9e76eba6576b976"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "bufstream"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40e38929add23cdf8a366df9b0e088953150724bcbe5fc330b0d8eb3b328eec8"
-
 [[package]]
 name = "bumpalo"
 version = "3.20.3"
@@ -350,12 +329,6 @@ dependencies = [
  "syn 3.0.6",
 ]
 
-[[package]]
-name = "byteorder"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
-
 [[package]]
 name = "byteorder-lite"
 version = "0.1.0"
@@ -678,15 +651,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "crossbeam-queue"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03e8bd762f7479489c70ed6c768ddca99d7296857de437a68dcb2a94365b3fae"
-dependencies = [
- "crossbeam-utils",
-]
-
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.23"
@@ -804,17 +768,6 @@ version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e9de72ce2ad1f90dc62fa25f0f430ef85eb4b0d8fa0be4f30373bc40a21d28e"
 
-[[package]]
-name = "derive_utils"
-version = "0.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc05a5d33db20c784f873e84934ad94bb209a090987ac5f62fede2c178234f23"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 3.0.6",
-]
-
 [[package]]
 name = "des"
 version = "0.8.1"
@@ -1365,7 +1318,6 @@ dependencies = [
  "ab_glyph",
  "bytemuck",
  "chrono",
- "dunce",
  "flate2",
  "fs4",
  "gilrs",
@@ -1411,7 +1363,6 @@ dependencies = [
  "serde_json",
  "sha1",
  "sha2",
- "toml",
  "unicode-bidi",
  "ureq",
  "wgpu",
@@ -1449,7 +1400,6 @@ dependencies = [
  "chrono",
  "flate2",
  "fs4",
- "getrandom 0.3.4",
  "gilrs",
  "glam",
  "horizon-anticheat",
@@ -1461,7 +1411,6 @@ dependencies = [
  "horizon-client-render",
  "horizon-command",
  "horizon-core",
- "horizon-cosmetics",
  "horizon-dualsense",
  "horizon-friends",
  "horizon-hdr",
@@ -1480,7 +1429,6 @@ dependencies = [
  "horizon-world",
  "log",
  "miniz_oxide 0.8.9",
- "mio",
  "naga",
  "objc2 0.6.5",
  "objc2-app-kit 0.3.2",
@@ -1497,7 +1445,6 @@ dependencies = [
  "ureq",
  "wgpu",
  "winit",
- "xxhash-rust",
  "zip",
 ]
 
@@ -1656,16 +1603,6 @@ dependencies = [
  "serde_json",
 ]
 
-[[package]]
-name = "horizon-mod-deps"
-version = "0.1.0"
-dependencies = [
- "mysql",
- "redis",
- "rusty-opus",
- "tungstenite",
-]
-
 [[package]]
 name = "horizon-mods"
 version = "0.1.0"
@@ -1776,7 +1713,6 @@ dependencies = [
  "horizon-mcp",
  "horizon-release-sign",
  "horizon-server-files",
- "horizon-world",
  "libc",
  "p12-keystore",
  "png",
@@ -2061,15 +1997,6 @@ dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "io-enum"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f859dc81e05e585e93cfc84dffa4fd068d0651ca229c51bca6101c056b63b93a"
-dependencies = [
- "derive_utils",
-]
-
 [[package]]
 name = "ipconfig"
 version = "0.3.4"
@@ -2317,12 +2244,6 @@ version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
 
-[[package]]
-name = "lru"
-version = "0.16.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f66e8d5d03f609abc3a39e6f08e4164ebf1447a732906d39eb9b99b7919ef39"
-
 [[package]]
 name = "lz4_flex"
 version = "0.14.0"
@@ -2394,77 +2315,12 @@ dependencies = [
  "simd-adler32",
 ]
 
-[[package]]
-name = "mio"
-version = "1.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1788edb87fdc09c7e26304471e2f5be8cdefb1b6930d6e3985fc02ff53bf86ee"
-dependencies = [
- "libc",
- "log",
- "wasi",
- "windows-sys 0.61.2",
-]
-
 [[package]]
 name = "multiversion_no_op"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "743fb55ba31b18fb1ecef6bdc9aa2743314978ac084044301a7eee33fb99a20d"
 
-[[package]]
-name = "mysql"
-version = "27.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "090068bc0a24762663338da78414148333d1ee246a7293c10a517ddf1548b291"
-dependencies = [
- "bufstream",
- "bytes",
- "crossbeam-queue",
- "crossbeam-utils",
- "flate2",
- "io-enum",
- "libc",
- "lru",
- "mysql_common",
- "named_pipe",
- "pem",
- "percent-encoding",
- "rustls",
- "rustls-pemfile",
- "socket2 0.6.5",
- "twox-hash",
- "url",
- "webpki",
- "webpki-roots 1.0.10",
-]
-
-[[package]]
-name = "mysql_common"
-version = "0.36.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "20e7f6a15265801679ddf1ddb38fd74b4555a677a78378d4561fbe5f0b1d4d72"
-dependencies = [
- "base64",
- "bitflags 2.13.2",
- "btoi",
- "byteorder",
- "bytes",
- "crc32fast",
- "flate2",
- "getrandom 0.3.4",
- "num-bigint",
- "num-traits",
- "regex",
- "saturating",
- "serde",
- "serde_json",
- "sha1",
- "sha2",
- "thiserror 2.0.21",
- "uuid",
-]
-
 [[package]]
 name = "naga"
 version = "30.0.1"
@@ -2502,15 +2358,6 @@ dependencies = [
  "thiserror 2.0.21",
 ]
 
-[[package]]
-name = "named_pipe"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad9c443cce91fc3e12f017290db75dde490d685cdaaf508d7159d7cf41f0eb2b"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "ndk"
 version = "0.9.0"
@@ -3110,16 +2957,6 @@ dependencies = [
  "hmac",
 ]
 
-[[package]]
-name = "pem"
-version = "3.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d30c53c26bc5b31a98cd02d20f25a7c8567146caf63ed593a9d87b2775291be"
-dependencies = [
- "base64",
- "serde_core",
-]
-
 [[package]]
 name = "pem-rfc7468"
 version = "0.7.0"
@@ -3447,22 +3284,6 @@ dependencies = [
  "yasna",
 ]
 
-[[package]]
-name = "redis"
-version = "1.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db7f3d75b5a3301746bff39a767bf4c5c42506b08513527308b3875bfb64a031"
-dependencies = [
- "arcstr",
- "combine",
- "itoa",
- "percent-encoding",
- "ryu",
- "socket2 0.6.5",
- "url",
- "xxhash-rust",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -3604,15 +3425,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "rustls-pemfile"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dce314e5fee3f39953d46bb63bb8a46d40c2f8fb7cc5a3b6cab2bde9721d6e50"
-dependencies = [
- "rustls-pki-types",
-]
-
 [[package]]
 name = "rustls-pki-types"
 version = "1.15.1"
@@ -3639,12 +3451,6 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
 
-[[package]]
-name = "rusty-opus"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46604e6809c06441da1cfdde1f0cc25a4f2bf42c7d005aa387c2875c02d78762"
-
 [[package]]
 name = "ruzstd"
 version = "0.9.1"
@@ -3654,12 +3460,6 @@ dependencies = [
  "twox-hash",
 ]
 
-[[package]]
-name = "ryu"
-version = "1.0.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
-
 [[package]]
 name = "salsa20"
 version = "0.10.2"
@@ -3678,12 +3478,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "saturating"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ece8e78b2f38ec51c51f5d475df0a7187ba5111b2a28bdc761ee05b075d40a71"
-
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -3903,17 +3697,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "socks"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0c3dbbd9ae980613c6dd8e28a9407b50509d3803b57624d5dfe8315218cd58b"
-dependencies = [
- "byteorder",
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "spake2"
 version = "0.4.0"
@@ -4292,18 +4075,6 @@ version = "0.25.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d2df906b07856748fa3f6e0ad0cbaa047052d4a7dd609e231c4f72cee8c36f31"
 
-[[package]]
-name = "tungstenite"
-version = "0.30.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e48ac77174b19c110a50ab2128b24215ac9cb40e0e12e093fb602d175c569d22"
-dependencies = [
- "bytes",
- "log",
- "rand",
- "thiserror 2.0.21",
-]
-
 [[package]]
 name = "twox-hash"
 version = "2.1.5"
@@ -4379,7 +4150,6 @@ dependencies = [
  "once_cell",
  "rustls",
  "rustls-pki-types",
- "socks",
  "url",
  "webpki-roots 0.26.11",
 ]
@@ -4647,16 +4417,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "webpki"
-version = "0.22.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed63aea5ce73d0ff405984102c42de94fc55a6b75765d621c65262469b3c9b53"
-dependencies = [
- "ring",
- "untrusted",
-]
-
 [[package]]
 name = "webpki-roots"
 version = "0.26.11"
@@ -4852,22 +4612,6 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
 
-[[package]]
-name = "winapi"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
@@ -4877,12 +4621,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
 [[package]]
 name = "windows"
 version = "0.54.0"

Cargo.toml

@@ -39,7 +39,6 @@ members = [
     "crates/horizon-optifine",
     "crates/horizon-shader-api",
     "crates/horizon-release-sign",
-    "crates/horizon-mod-deps",
     "xtask",
 ]
 resolver = "2"

README.md

@@ -7,7 +7,7 @@
   <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%">
-  <a href="#project-status"><img src="https://img.shields.io/badge/player--visible%20gaps-0%20open-F0795A" alt="Player-visible gaps open"></a>
+  <a href="#project-status"><img src="https://img.shields.io/badge/player--visible%20gaps-833%20open-F0795A" alt="Player-visible gaps open"></a>
   <img src="https://img.shields.io/badge/platform-Linux%20%7C%20macOS%20%7C%20Windows-2A2470" alt="Linux, macOS and Windows">
   <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-3B2F7E" alt="MIT license"></a>
 </p>
@@ -30,7 +30,7 @@ Minecraft: Java Edition 26.3, rewritten in Rust. Same worlds, same rules, same t
 
 ## Download
 
-Get **the Horizon launcher** from [playhorizon.dev](https://playhorizon.dev) or [the launcher releases](https://github.com/horizon-rust/horizon/releases?q=launcher&expanded=true) (Linux x86-64, macOS on Apple Silicon, macOS on Intel from the next Nightly, Windows x64). It installs and updates the game, prepares its files from your copy of Minecraft, and updates itself.
+Get **the Horizon launcher** from [playhorizon.dev](https://playhorizon.dev) or [the launcher releases](https://github.com/horizon-rust/horizon/releases?q=launcher-v&expanded=true) (Linux x86-64, macOS on Apple Silicon, macOS on Intel from the next Nightly, Windows x64). It installs and updates the game, prepares its files from your copy of Minecraft, and updates itself.
 
 **You need** a Microsoft account that owns Java Edition ([why](docs/microsoft-account.md)) and a GPU with Vulkan or OpenGL 3.3 (Linux), Vulkan or DirectX 12 (Windows), or a Mac (Apple Silicon, or Intel from the next Nightly). An existing Minecraft install (official launcher, Prism, MultiMC...) is reused; without one, Play downloads 26.3 from Mojang for your account. Step by step: [Install and first launch](https://playhorizon.dev/docs/install).
 
@@ -122,13 +122,13 @@ It runs rustfmt, clippy, the touched crates' tests, the Python tests, the public
 
 ## Project status
 
-**Player-visible gaps: 0 open** of the 833 the [port ledger](tools/port_ledger.py) found, reading every vanilla 26.3 method against Horizon's code: vanilla behaviour a player would notice that Horizon doesn't have yet. By area: Animals [0](https://github.com/horizon-rust/horizon/issues/3512); Monsters and bosses [0](https://github.com/horizon-rust/horizon/issues/3513); Entities, projectiles, vehicles and decorations [0](https://github.com/horizon-rust/horizon/issues/3514); Items, enchantments and inventories [0](https://github.com/horizon-rust/horizon/issues/3515); Blocks, redstone and fluids [0](https://github.com/horizon-rust/horizon/issues/3516); World, world generation and saves [0](https://github.com/horizon-rust/horizon/issues/3517); Screens, HUD and client packets [0](https://github.com/horizon-rust/horizon/issues/3518); Entity and block rendering, models [0](https://github.com/horizon-rust/horizon/issues/3519); Server and players on the server [0](https://github.com/horizon-rust/horizon/issues/3520); Mob AI, villagers and raids [0](https://github.com/horizon-rust/horizon/issues/3521). This number goes down as gaps close (`tools/parity_gaps.py`); the harness results below say that what is tested matches.
+**Player-visible gaps: 833 open** of the 833 the [port ledger](tools/port_ledger.py) found, reading every vanilla 26.3 method against Horizon's code: vanilla behaviour a player would notice that Horizon doesn't have yet. By area: Screens, HUD and client packets [197](https://github.com/horizon-rust/horizon/issues/3518); Entity and block rendering, models [129](https://github.com/horizon-rust/horizon/issues/3519); Animals [110](https://github.com/horizon-rust/horizon/issues/3512); Server and players on the server [106](https://github.com/horizon-rust/horizon/issues/3520); Blocks, redstone and fluids [86](https://github.com/horizon-rust/horizon/issues/3516); Entities, projectiles, vehicles and decorations [64](https://github.com/horizon-rust/horizon/issues/3514); Monsters and bosses [53](https://github.com/horizon-rust/horizon/issues/3513); Mob AI, villagers and raids [35](https://github.com/horizon-rust/horizon/issues/3521); World, world generation and saves [32](https://github.com/horizon-rust/horizon/issues/3517); Items, enchantments and inventories [21](https://github.com/horizon-rust/horizon/issues/3515). This number goes down as gaps close (`tools/parity_gaps.py`); the harness results below say that what is tested matches.
 
 The table is the project's own audit: every subsystem matches vanilla in every harness that compares it. 100% means 100% of what the harnesses compare, not that nothing else differs.
 
 ### Java parity: 100%
 
-Scores: 0 (absent), 0.25 (started), 0.5 (playable, major features missing), 0.75 (mostly complete) or 1 (complete and verified by differential tests); the percentage is their average. Last audited 2026-10-13: the harnesses pass on Linux and macOS. The [port ledger](tools/port_ledger.py) adds a method-by-method view of what is ported.
+Scores: 0 (absent), 0.25 (started), 0.5 (playable, major features missing), 0.75 (mostly complete) or 1 (complete and verified by differential tests); the percentage is their average. Last audited 2026-10-13: all 281 harnesses pass on Linux and macOS. The [port ledger](tools/port_ledger.py) adds a method-by-method view of what is ported.
 
 | Subsystem | Score | Main gaps |
 | --- | ---: | --- |

ROADMAP.md

@@ -206,7 +206,7 @@ Manage a server from a console, ban and pardon players, and drive it from other
 
 <details><summary>Technical</summary>
 
-`horizon-server console` (a text interface), `ban`, `pardon`, `ban-ip` and `mcp` over stdio. Admin API additions: the player list, kick, ban, op and whitelist, an SSE stream of logs and events, a text metrics endpoint, config GET and PATCH, backup delete and download. The last pieces merged: bans edited while the server is stopped ([#9767](https://github.com/horizon-rust/horizon/issues/9767)) and the MCP tools' contracts pinned by a test ([#9748](https://github.com/horizon-rust/horizon/issues/9748)). The panel's later features and vanilla's management protocol are their own item (server-panel-management). [docs/server.md](docs/server.md), [docs/api/server.md](docs/api/server.md).
+`horizon-server console` (a text interface), `ban`, `pardon`, `ban-ip` and `mcp` over stdio. Admin API additions: the player list, kick, ban, op and whitelist, an SSE stream of logs and events, a text metrics endpoint, config GET and PATCH, backup delete and download. The panel's later features (bans, worlds, server.properties import, logs and crash reports, modpacks) and vanilla's management protocol (the JSON-RPC over WebSocket that the `management-server-*` keys configure), so vanilla's tools can manage a Horizon server. [docs/server.md](docs/server.md), [docs/api/server.md](docs/api/server.md).
 
 </details>
 
@@ -396,16 +396,6 @@ A Datapacks tab beside Mods and Resource packs: install into a chosen world's da
 
 ### Servers and multiplayer
 
-#### Server panel extras and vanilla's management protocol
-
-More of a server managed from its web panel (bans, worlds, logs and crash reports, modpacks), and vanilla's own server-management tools working with a Horizon server.
-
-<details><summary>Technical</summary>
-
-The panel's later features (bans, worlds, server.properties import, logs and crash reports, modpacks) and vanilla's management protocol (the JSON-RPC over WebSocket that the `management-server-*` keys configure), so vanilla's tools can manage a Horizon server. Split from server-admin. [docs/server.md](docs/server.md), [docs/api/server.md](docs/api/server.md).
-
-</details>
-
 #### Ely.by and other sign-in providers
 
 Sign in with other account providers, such as Ely.by or any Yggdrasil-compatible one, beside Microsoft.
@@ -610,6 +600,16 @@ An output device list in Music & Sounds, falling back to the system default. [#1
 
 </details>
 
+#### Play in your language
+
+Item names, container titles and server messages follow the language you pick, as in vanilla. Today parts of the game stay in English.
+
+<details><summary>Technical</summary>
+
+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.
+
+</details>
+
 ### Rendering
 
 #### A light default shader pack
@@ -860,11 +860,30 @@ More: [https://playhorizon.dev/docs/performance](https://playhorizon.dev/docs/pe
 
 </details>
 
+### Gameplay parity
+
+#### End city banners keep their pattern
+
+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/horizon-rust/horizon/issues/1438); possibly related: [#526](https://github.com/horizon-rust/horizon/issues/526).
+
+</details>
+
+#### Enchanted loot in End cities
+
+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/horizon-rust/horizon/issues/1437), [#1660](https://github.com/horizon-rust/horizon/issues/1660).
+
+</details>
+
 ## Recently shipped
 
-- **Enchanted loot in End cities** (v0.2.73): Armour and tools in End city chests should come enchanted, as in vanilla. [#1437](https://github.com/horizon-rust/horizon/issues/1437) · [#1660](https://github.com/horizon-rust/horizon/issues/1660) · [#1911](https://github.com/horizon-rust/horizon/issues/1911) · [#2037](https://github.com/horizon-rust/horizon/issues/2037)
-- **End city banners keep their pattern** (v0.2.67): Banners in End cities show as plain magenta instead of with their pattern. [#1438](https://github.com/horizon-rust/horizon/issues/1438) · [#526](https://github.com/horizon-rust/horizon/issues/526) · [#1928](https://github.com/horizon-rust/horizon/issues/1928)
-- **Play in your language** (v0.2.65): Item names, container titles and server messages follow the language you pick, as in vanilla. Today parts of the game stay in English. [#1806](https://github.com/horizon-rust/horizon/issues/1806) · [#1594](https://github.com/horizon-rust/horizon/issues/1594) · [#1672](https://github.com/horizon-rust/horizon/issues/1672)
 - **Chickens flap while they fall** (v0.2.67): Chickens should flap their wings while they fall, not stand still in the air. [#1706](https://github.com/horizon-rust/horizon/issues/1706) · [#1892](https://github.com/horizon-rust/horizon/issues/1892)
 - **Ctrl+Backspace and scroll bars in menus** (v0.2.67): Ctrl+Backspace should delete a whole word in the creative search, and every list's scroll bar should be draggable. [#1764](https://github.com/horizon-rust/horizon/issues/1764) · [#1782](https://github.com/horizon-rust/horizon/issues/1782) · [#1884](https://github.com/horizon-rust/horizon/issues/1884) · [#1931](https://github.com/horizon-rust/horizon/issues/1931)
 - **A pointing hand over buttons** (v0.2.67): The mouse pointer should turn into a pointing hand over menu buttons, as in vanilla 26.3. [#1347](https://github.com/horizon-rust/horizon/issues/1347) · [#1897](https://github.com/horizon-rust/horizon/issues/1897)

THIRD_PARTY_NOTICES.md

@@ -14,11 +14,6 @@ Apache-2.0; both licenses are in that folder (`LICENSE.MIT`, `LICENSE.APACHE`).
 fixes to its GLSL frontend that shader packs need, each applied in the commit that needed it. It is licensed under MIT or Apache-2.0; both licenses
 are in that folder (`LICENSE.MIT`, `LICENSE.APACHE`).
 
-The GLSL frontend also resets the common type for each comma-separated declarator so one
-variable's array specifier does not change later variables.
-It also reads a struct member outside a constant expression through a pointer to the member,
-not out of a loaded copy of the whole struct, so a member an atomic function uses can be read.
-
 ## libmimalloc-sys and mimalloc
 
 `third_party/libmimalloc-sys` is [libmimalloc-sys](https://github.com/purpleprotocol/mimalloc_rust)
@@ -170,45 +165,3 @@ BlueMap is licensed under the MIT license:
 > LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 > OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 > THE SOFTWARE.
-
-## JOML
-
-`crates/horizon-client-render/src/camera.rs` (`joml::Mat4::rotation`, `invert_orthonormal`) and
-`crates/horizon-client-render/src/gfx/pack_uniforms.rs` (`invert_generic`, `invert_affine`, the
-formulas of `pack_projection` and `shadow_ortho`) adapt the float arithmetic of
-`Matrix4f.rotation(Quaternionfc)`, `invertOrthonormal`, `invertGenericNonThis`, `invertAffine`,
-`setPerspective` and `setOrtho` from
-[JOML](https://github.com/JOML-CI/JOML/tree/faf9eef2511242122beb6055fe3da92daed214c5) 1.10.9, the
-library vanilla 26.3 uses, so that shader packs get the same matrices to the last bit. Changes:
-ported to Rust; the pack_uniforms.rs functions drop JOML's property flags, and
-`pack_projection` works the formula in doubles. The copyright line and license notice also head
-both files.
-
-`camera.rs` also adapts `Quaternionf.rotationX`, `rotationY` and `rotationZ`,
-`Matrix4f.rotateAffine` and `Vector4f.mulAffine` (`joml::Quat::rotation_x`/`_y`/`_z`,
-`joml::Mat4::rotate_affine`, `transform_affine`), for the sky's positions shader packs read.
-Changes: ported to Rust; `rotate_affine` keeps only the affine case.
-
-```
-The MIT License
-
-Copyright (c) 2015-2026 Richard Greenlees
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-```

bench/bench.py

@@ -1,9 +1,9 @@
 #!/usr/bin/env python3
 """Server load bench: the same horizon-bots load on Horizon, vanilla 26.3 or Pumpkin.
 
-    python3 tools/bench.py --server horizon --exe target/release/horizon-server --bots 50
-    python3 tools/bench.py --server vanilla --jar ~/mc/server.jar --bots 50 --pre-generated ~/worlds/seed12345
-    python3 tools/bench.py --server pumpkin --exe ./pumpkin --bots 50
+    python3 bench/bench.py --server horizon --exe target/release/horizon-server --bots 50
+    python3 bench/bench.py --server vanilla --jar ~/mc/server.jar --bots 50 --pre-generated ~/worlds/seed12345
+    python3 bench/bench.py --server pumpkin --exe ./pumpkin --bots 50
 
 Every run uses a fresh scratch folder (bound to 127.0.0.1, offline, creative so the bots can fly), starts the
 server, lets `horizon-bots` join one every --join-every seconds, warms up, then measures for --seconds:
@@ -39,11 +39,6 @@ import tempfile
 import threading
 import time
 
-try:
-    from . import lab
-except ImportError:
-    import lab
-
 ROOT = Path(__file__).resolve().parent.parent
 EXE = '.exe' if os.name == 'nt' else ''
 SERVERS = ('horizon', 'vanilla', 'pumpkin')
@@ -212,7 +207,8 @@ class Server:
         self.lines = []
         self.lock = threading.Lock()
         self.log = log_path.open('w', encoding='utf-8')
-        env = lab.game_env(HORIZON_HOME=directory / 'horizon-home')
+        env = dict(os.environ, HORIZON_NO_AUDIO='1', HORIZON_HOME=str(directory / 'horizon-home'),
+                   HORIZON_LAUNCHER_NO_SELF_UPDATE='1')
         self.process = subprocess.Popen([str(c) for c in command], cwd=directory, stdin=subprocess.PIPE,
                                         stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True,
                                         encoding='utf-8', errors='replace', env=env)

benchmarks/entity-occlusion/2026-11-02/README.md

@@ -1,42 +0,0 @@
-# Entity occlusion split measurements — 2026-11-02
-
-These measurements came from the pre-split integration branch for PR #7054. That build contained the entity-occlusion rewrite and particle light lookup cache; Particle Culling was Off. They are useful comparison evidence, but they are not a benchmark of this isolated entity-only commit. The cache-only run in PR #7391 measured effectively the same CPU time on the ordinary scene, but the combined result still cannot isolate interactions.
-
-Host: Intel Core i7-3770S, Intel HD Graphics 4000, Vulkan/Mesa, 675×727, render distance 4, VSync off, 260 FPS cap. Two opposite-order passes measured for 8 seconds after warmup. Values are means. CPU is harness average CPU ms per frame; p99 is frame time. The driver supplied no usable GPU timing.
-
-## Ordinary scene
-
-The scene had 24 mobs, roughly 9,400–10,100 rain particles and campfire smoke.
-
-| Build and mode | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, entity culling Off | 88.59 | 1.829 | 24.51 |
-| Pre-split integration branch, all culling Off | 88.33 | 2.063 | 24.51 |
-| Main, entity culling Synchronous | 89.34 | 1.965 | 23.99 |
-| Pre-split integration branch, entity Synchronous | 89.13 | 2.113 | 24.15 |
-
-This normal-scene run does not show a large FPS change; its CPU differences are small relative to frame time and not attributable to the entity-only change by themselves.
-
-## Opaque-wall scene
-
-A 32×32 platform at Y=300, a 7-block wall with a one-block vertical opening, and 192 pigs spawned behind the wall (216 mobs in the captured scene). The player looked toward the opening from the near side. The same world and camera path were used for the main and integration builds.
-
-| Build and mode | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, Off | 89.08 | 2.423 | 13.52 |
-| Integration branch, Off | 89.23 | 2.355 | 13.27 |
-| Main, Synchronous | 92.81 | 2.566 | 14.60 |
-| Integration branch, Synchronous | 93.21 | 2.550 | 12.84 |
-| Main, Asynchronous | 92.73 | 2.364 | 13.04 |
-| Integration branch, Asynchronous | 92.62 | 2.314 | 13.18 |
-
-The asynchronous mode reduced measured CPU time slightly in this wall scene but did not improve FPS beyond run-to-run spread. This is a synthetic occlusion-heavy scene, not a broad performance claim.
-
-## Captures
-
-The HUD performance overlay is visible in each capture. The integration-build screenshots were recorded with the same wall and camera position in Off, Synchronous, and Asynchronous modes.
-
-- Main, Off: `main-off.png`
-- Integration branch, Off: `branch-off.png`
-- Integration branch, Synchronous: `branch-sync.png`
-- Integration branch, Asynchronous: `branch-async.png`

benchmarks/entity-occlusion/2026-11-04-release-opengl/README.md

@@ -1,42 +0,0 @@
-# Entity occlusion pipeline — release/OpenGL run (2026-11-04)
-
-This is the final local smoke benchmark for the entity-occlusion pipeline before opening the PR. It was run from the branch after the release build completed, with the OpenGL backend selected explicitly. The same process created each scene, switched the culling mode, flew the camera for two seconds, collected frame/CPU telemetry, and captured the screenshot after the scene settled.
-
-**Host:** Intel Core i7-3770S, Intel HD Graphics 4000, Mesa OpenGL 4.2
-**Window:** 1280×720, offscreen, VSync disabled
-**World:** fresh temporary home, 32×32 platform at Y=300; wall scenes add a solid stone wall and an optional one-block slit
-**Entities:** 24 pigs in the normal scene, 192 pigs in wall scenes, 512 pigs in stress scenes
-**Settings:** render distance 8, `entityCullingPrecheck:64`, FPS overlay on, no resource-pack occlusion assumptions
-**Build:** `cargo build --release -p horizon-client`
-
-## Results
-
-The values below are branch-only measurements. They are useful for comparing the three modes under identical geometry and for checking that the worker is doing useful work. A fresh main binary was not built in this short pass, so these numbers do not claim a controlled main-to-branch delta.
-
-| Scene | Off FPS / CPU p50 | Sync FPS / CPU p50 | Async FPS / CPU p50 | Async entities culled |
-| --- | ---: | ---: | ---: | ---: |
-| `entity_normal` (24 visible) | 240.5 / 0.586 ms | 233.5 / 0.762 ms | 239.3 / 0.686 ms | 0 |
-| `entity_wall` (192, solid) | 228.8 / 1.245 ms | 318.6 / 1.342 ms | **324.5 / 0.478 ms** | 124,608 |
-| `entity_wall_slit` (192, one-block slit) | 231.4 / 1.102 ms | 265.0 / 1.387 ms | **281.2 / 0.716 ms** | 102,826 |
-| `entity_stress` (512, solid) | 190.3 / 2.467 ms | 299.2 / 2.593 ms | **325.5 / 0.691 ms** | 290,234 |
-| `entity_stress_slit` (512, one-block slit) | 190.4 / 2.476 ms | 262.2 / 2.573 ms | **262.1 / 1.297 ms** | 227,301 |
-
-Async telemetry confirmed that the render thread stayed non-blocking (`try_recv`/`try_send`, `worker_blocking_wait_ms: 0`). The latest wall/slit run completed 562 worker jobs, queued 3,982 queries, avoided about 4.0 million entity bytes, and had 379 ns recent p50 worker-job time. The solid 512-pig run culled 15,552 generated vertices; the slit run culled 120,290 generated vertices. The normal scene recorded no pre-model hides and kept the opt-in path close to Off.
-
-## Captures
-
-Every image includes the FPS performance overlay. The names are `<mode>-<scene>.png`:
-
-- [Off — normal](screenshots/off-entity_normal.png), [wall](screenshots/off-entity_wall.png), [wall slit](screenshots/off-entity_wall_slit.png), [stress](screenshots/off-entity_stress.png), [stress slit](screenshots/off-entity_stress_slit.png)
-- [Sync — normal](screenshots/sync-entity_normal.png), [wall](screenshots/sync-entity_wall.png), [wall slit](screenshots/sync-entity_wall_slit.png), [stress](screenshots/sync-entity_stress.png), [stress slit](screenshots/sync-entity_stress_slit.png)
-- [Async — normal](screenshots/async-entity_normal.png), [wall](screenshots/async-entity_wall.png), [wall slit](screenshots/async-entity_wall_slit.png), [stress](screenshots/async-entity_stress.png), [stress slit](screenshots/async-entity_stress_slit.png)
-
-## Reproduction
-
-From the repository root, with prepared 26.3 resources available:
-
-```sh
-python3 tools/entity_occlusion_bench.py
-```
-
-The script uses fresh temporary game data, the release binary in `target/release`, OpenGL, the FPS overlay, and writes JSON plus captures under `/tmp/horizon-entity-occlusion-release-quick/`.

benchmarks/particle-culling/2026-11-02/README.md

@@ -1,27 +0,0 @@
-# Particle culling review measurements — 2026-11-02
-
-Ordinary-scene captures and measurements for PR #7054. The scene contains 24 mobs, about 9,400–10,100 rain particles, and about 50–100 campfire smoke particles. Two opposite-order passes were run with 2 s warmup and 8 s measurement per condition. Host: Intel Core i7-3770S, Intel HD Graphics 4000, Vulkan/Mesa, 675×727, render distance 4, VSync off, 260 FPS cap.
-
-These are means of the two samples. CPU is the harness's average CPU time per frame; p99 is frame time. The normal scene is not expected to show large gains because most particles are visible.
-
-| Condition | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, culling Off | 88.39 | 1.930 | 23.85 |
-| Particle branch, culling Off | 88.55 | 1.828 | 24.88 |
-| Main, Entity Culling Synchronous | 89.12 | 1.887 | 23.07 |
-| Particle branch, Entity Culling Synchronous, Particle Culling Off | 89.06 | 1.897 | 25.18 |
-| Particle Culling Synchronous | 88.87 | 1.774 | 24.94 |
-| Particle Culling Asynchronous* | 89.00 | 1.754 | 24.90 |
-
-*The asynchronous samples predate the final switch to a dedicated particle worker. They are retained only as historical context and are not a measurement of the final worker implementation. No FPS improvement is claimed from these ordinary-scene runs. The Off path delegates directly to `render`; `disabled_culled_render_matches_the_regular_particle_path` checks that it produces the same vertices.
-
-The FPS and CPU differences are within run-to-run variability for this GPU-limited scene. The first four conditions are the reviewer's requested Main-versus-branch default and existing synchronous-mode comparisons. Particle Sync/Async rows are branch-internal mode comparisons.
-
-## Captures
-
-The screenshots show the same ordinary test world and FPS overlay:
-
-- `main-off.png`
-- `particle-off.png`
-- `particle-sync.png`
-- `particle-async.png`

benchmarks/perf/horizon-desktop-rd12.json

@@ -1,870 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:00:15Z",
- "app": {
-  "name": "horizon-client",
-  "version": "nightly-2026-11-04-67dad0d",
-  "commit": "67dad0d"
- },
- "hardware": {
-  "os": "linux",
-  "arch": "x86_64",
-  "cpu_threads": 24,
-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 4080",
-   "vendor": "nvidia",
-   "driver": "NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 12,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 28.408,
-  "window": [
-   1280,
-   720
-  ]
- },
- "metrics": {
-  "startup.title_ms": {
-   "n": 3,
-   "mean": 66658.183,
-   "stdev": 61839.502,
-   "min": 1827.42,
-   "max": 124993.694,
-   "ci95": 153630.237
-  },
-  "startup.world_ms": {
-   "n": 3,
-   "mean": 74754.411,
-   "stdev": 59189.587,
-   "min": 13600.651,
-   "max": 131761.773,
-   "ci95": 147046.952
-  },
-  "chunks.village.load_ms": {
-   "n": 3,
-   "mean": 5571.499,
-   "stdev": 1900.32,
-   "min": 3378.38,
-   "max": 6730.394,
-   "ci95": 4721.037
-  },
-  "chunks.village.meshed_count": {
-   "n": 3,
-   "mean": 15287.0,
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benchmarks/perf/horizon-desktop-rd32.json

@@ -1,870 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T14:47:19Z",
- "app": {
-  "name": "horizon-client",
-  "version": "nightly-2026-11-04-67dad0d",
-  "commit": "67dad0d"
- },
- "hardware": {
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-  "arch": "x86_64",
-  "cpu_threads": 24,
-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 4080",
-   "vendor": "nvidia",
-   "driver": "NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 32,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 29.665,
-  "window": [
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-   720
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- },
- "metrics": {
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benchmarks/perf/horizon-macmini-rd12.json

@@ -1,854 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T12:44:40Z",
- "app": {
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-  "version": "nightly-2026-11-04-67dad0d",
-  "commit": "67dad0d"
- },
- "hardware": {
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-  "arch": "aarch64",
-  "cpu_threads": 14,
-  "os_version": "27.0.1",
-  "cpu": "Apple M4 Pro",
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benchmarks/perf/horizon-macmini-rd32.json

@@ -1,854 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:17:26Z",
- "app": {
-  "name": "horizon-client",
-  "version": "nightly-2026-11-04-67dad0d",
-  "commit": "67dad0d"
- },
- "hardware": {
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benchmarks/perf/site-2026-11-04.md

@@ -1,42 +0,0 @@
-# Horizon Nightly 2026-11-04 vs vanilla 26.3 on the Mac mini and the desktop (2026-11-04)
-
-> **The Mac mini reports (`*-macmini-rd*.json`) are offscreen, not comparable.** Horizon rendered offscreen (no presenting)
-> while vanilla drew into a window, so the Mac rows below are not a Horizon-vs-vanilla comparison, and the website does not
-> publish them: it keeps the Mac mini's 2026-10-22 runs. They are kept here only as a record of that day's offscreen run.
-
-The desktop runs are the ones behind playhorizon.dev/benchmarks as of 2026-11-04 (horizon-rust/horizon-site#58): `tools/perf_bench.py`
-reports, render distance 12 and 32, three games each, every game from a fresh world (seed 1234), 1280x720, VSync off. Files:
-`{horizon,vanilla}-macmini-rd{12,32}.json` and `{horizon,vanilla}-desktop-rd{12,32}.json` next to this page.
-
-## Builds
-
-- **Horizon:** the Nightly 2026-11-04 release bundle (67dad0d), as the launcher installs it: macOS arm64 on the Mac,
-  Linux x86_64 on the desktop. Its resources come from the bundle's own `horizon-prepare`. perf_bench ran from main
-  a55b9a2e52 and wrote that checkout's crate version and commit; `app.version` and `app.commit` were set to the bundle's by hand.
-- **Vanilla:** the 26.3 client jar with Fabric Loader and the driver mod, Java 25, the official launcher's JVM flags.
-
-## Machines and conditions
-
-- **Mac mini, Apple M4 Pro (14 cores, 20-core GPU), macOS: offscreen, not comparable.** The session was locked, so Horizon ran `--offscreen`: a locked
-  session gives a window no frames, and windowed Horizon measured 0 FPS. Vanilla drew into its window. Offscreen skips
-  presenting, which favours Horizon, so its averages aren't held at the 144 Hz display as they were on 2026-10-22. Each game
-  started at a 1-minute load of 17-18 (the run waited for < 20); during the runs the load rose to 30-50.
-- **Desktop, RTX 4080 + i7-13700KF, NixOS, NVIDIA 595.** Both games drew into a headless sway rendering on the RTX 4080 (never
-  on its screen), both through Wayland on Vulkan. Vanilla went through SDL's Wayland driver: through Xwayland each of its
-  frames took about 2 s on this day. The machine also runs CI and agents' builds: each game started at a load of 28-30 on
-  24 threads (the run waited for < 30) and the load rose to 40-70 during the runs. Vanilla at RD 32 crashed twice under that
-  load (`GPU timeout attempting to acquire next frame`) before a third series finished. Start-up times are inflated by the
-  load and by a cold disk on each series' first start (start → world up to 130-235 s).
-- **Order:** RD 12 ran Horizon then vanilla; RD 32 ran vanilla then Horizon.
-
-## Results (average over the flights of the three games; FPS average / 1% low)
-
-| Machine | RD | Horizon | Vanilla | Horizon ÷ vanilla (avg, 1% low) |
-|---|---|---|---|---|
-| Mac mini (**offscreen, not comparable**) | 12 | 774 / 294 | 132 / 27 | — |
-| Mac mini (**offscreen, not comparable**) | 32 | 297 / 159 | 68 / 16 | — |
-| Desktop | 12 | 2,224 / 308 | 1,824 / 201 | 1.2x, 1.5x |
-| Desktop | 32 | 800 / 140 | 696 / 64 | 1.15x, 2.2x |
-
-Neither machine was idle, so these say how both games behave on busy machines. They are not clean ratios; for those, see
-`windows-9800x3d-5080-2026-10-29.md`. The scripts and logs are in horizon-parity `shots/site-bench-2026-11-04/`.

benchmarks/perf/vanilla-desktop-rd12.json

@@ -1,787 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:28:55Z",
- "app": {
-  "name": "minecraft",
-  "version": "26.3",
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-    "version": "0.19.5"
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- },
- "hardware": {
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-  "arch": "x86_64",
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-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
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-   "vendor": "NVIDIA",
-   "driver": "1.4.329 NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": ""
-  }
- },
- "conditions": {
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-  "render_distance": 12,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 28.788,
-  "window": [
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-   720
-  ]
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-  }
- ],
- "label": "vanilla-desktop"
-}

benchmarks/perf/vanilla-desktop-rd32.json

@@ -1,787 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T15:46:25Z",
- "app": {
-  "name": "minecraft",
-  "version": "26.3",
-  "mods": [
-   {
-    "name": "fabric-loader",
-    "version": "0.19.5"
-   }
-  ]
- },
- "hardware": {
-  "os": "linux",
-  "arch": "x86_64",
-  "cpu_threads": 24,
-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 4080",
-   "vendor": "NVIDIA",
-   "driver": "1.4.329 NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": ""
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 32,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 28.799,
-  "window": [
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-   720
-  ]
- },
- "metrics": {
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-   "stdev": 27885.804,
-   "min": 81110.692,
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-   "ci95": 69277.769
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-  "startup.world_ms": {
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-   "min": 203486.748,
-   "max": 266409.692,
-   "ci95": 78162.144
-  },
-  "chunks.village.load_ms": {
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-   "stdev": 109107.365,
-   "min": 16685.972,
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-   "min": 101.073,
-   "max": 869.433,
-   "ci95": 970.146
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-   "min": 1.644,
-   "max": 79.658,
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-   "low_1pct_fps": 37.064,
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- "label": "vanilla-desktop"
-}

benchmarks/perf/vanilla-macmini-rd12.json

@@ -1,771 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T12:54:29Z",
- "app": {
-  "name": "minecraft",
-  "version": "26.3",
-  "mods": [
-   {
-    "name": "fabric-loader",
-    "version": "0.19.5"
-   }
-  ]
- },
- "hardware": {
-  "os": "macos",
-  "arch": "aarch64",
-  "cpu_threads": 14,
-  "os_version": "27.0.1",
-  "cpu": "Apple M4 Pro",
-  "ram_mb": 65536,
-  "gpu": {
-   "name": "Apple M4 Pro",
-   "vendor": "Apple",
-   "driver": "4.1 Metal - 91.7",
-   "backend": "opengl",
-   "kind": ""
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 12,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 17.628,
-  "window": [
-   1280,
-   720
-  ]
- },
- "metrics": {
-  "startup.title_ms": {
-   "n": 3,
-   "mean": 12652.182,
-   "stdev": 3231.342,
-   "min": 9526.004,
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benchmarks/perf/vanilla-macmini-rd32.json

@@ -1,771 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:08:37Z",
- "app": {
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- "hardware": {
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-  "arch": "aarch64",
-  "cpu_threads": 14,
-  "os_version": "27.0.1",
-  "cpu": "Apple M4 Pro",
-  "ram_mb": 65536,
-  "gpu": {
-   "name": "Apple M4 Pro",
-   "vendor": "Apple",
-   "driver": "4.1 Metal - 91.7",
-   "backend": "opengl",
-   "kind": ""
-  }
- },
- "conditions": {
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-  "seed": "1234",
-  "render_distance": 32,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 18.159,
-  "window": [
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-   720
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-}

clippy.toml

@@ -1,5 +0,0 @@
-# `keys.contains(&KeyCode::ShiftLeft)` reads a mapping by its default key: ask by `Action`, so the
-# mapping is named and every device that can hold it counts.
-disallowed-methods = [
-    { path = "horizon_client_input::held::HeldKeys::contains", reason = "use `held(Action::..)`, or `raw` for a key that is no mapping's default", allow-invalid = true },
-]

crates/cargo-horizon-mod/Cargo.toml

@@ -6,14 +6,6 @@ license.workspace = true
 rust-version = "1.86"
 description = "cargo horizon-mod new/build/run/check: make Horizon content mods (docs/mods.md)"
 
-# `cargo binstall --git https://github.com/horizon-rust/horizon cargo-horizon-mod` (#2120) reads this: the archive
-# `cargo-horizon-mod`'s workflow attaches to the `cargo-horizon-mod-v<version>` release for the runner's target,
-# holding the binary at its root. tools/horizon_mod_binstall.py expands it for the workflow's targets.
-[package.metadata.binstall]
-pkg-url = "https://github.com/horizon-rust/horizon/releases/download/cargo-horizon-mod-v{ version }/{ name }-{ target }.tar.gz"
-bin-dir = "{ bin }{ binary-ext }"
-pkg-fmt = "tgz"
-
 [dependencies]
 horizon-mods = { path = "../horizon-mods", default-features = false, features = ["index"] }
 serde_json = "1.0.151"

crates/cargo-horizon-mod/src/check.rs

@@ -93,7 +93,7 @@ pub fn kind_of(path: &Path) -> Option<Kind> {
         "hmod" => Some(Kind::Mod),
         "hnmod" => Some(Kind::NativeMod),
         "hpack" => Some(Kind::Modpack),
-        "zip" => Some(horizon_mods::index::zip_kind(path)),
+        "zip" => Some(Kind::ResourcePack),
         "hshader" => Some(Kind::Shader),
         _ => None,
     }

crates/horizon-chat-filter/src/lib.rs

@@ -489,36 +489,15 @@ pub fn parse_duration(text: &str) -> Option<i64> {
     (count > 0).then(|| count.checked_mul(unit)).flatten()
 }
 
-/// The unit used when presenting a moderation duration to a player.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum DurationUnit {
-    Minute,
-    Hour,
-    Day,
-}
-
-/// A duration's rounded count and unit, shared by logs and translated replies.
-pub fn duration_parts(millis: i64) -> (i64, DurationUnit) {
-    let (unit, kind) = if millis <= 60 * MINUTE {
-        (MINUTE, DurationUnit::Minute)
-    } else if millis <= 48 * 60 * MINUTE {
-        (60 * MINUTE, DurationUnit::Hour)
-    } else {
-        (24 * 60 * MINUTE, DurationUnit::Day)
-    };
-    (
-        millis.div_euclid(unit) + i64::from(millis.rem_euclid(unit) > 0),
-        kind,
-    )
-}
-
-/// `millis` for logs, rounded up: minutes up to an hour, hours up to two days, then days.
+/// `millis` for players, rounded up: minutes up to an hour, hours up to two days, then days.
 pub fn duration_text(millis: i64) -> String {
-    let (count, unit) = duration_parts(millis);
-    let unit = match unit {
-        DurationUnit::Minute => "minute",
-        DurationUnit::Hour => "hour",
-        DurationUnit::Day => "day",
+    let up = |unit: i64| (millis + unit - 1) / unit;
+    let (count, unit) = if millis <= 60 * MINUTE {
+        (up(MINUTE), "minute")
+    } else if millis <= 48 * 60 * MINUTE {
+        (up(60 * MINUTE), "hour")
+    } else {
+        (up(24 * 60 * MINUTE), "day")
     };
     format!("{count} {unit}{}", if count == 1 { "" } else { "s" })
 }

crates/horizon-chat-filter/src/tests.rs

@@ -327,19 +327,3 @@ fn an_allow_line_without_letters_allows_nothing() {
         assert!(f.matches("nigger"), "{line}");
     }
 }
-
-#[test]
-fn duration_parts_preserve_rounding_without_overflow() {
-    for (millis, expected) in [
-        (1, (1, DurationUnit::Minute)),
-        (60_000, (1, DurationUnit::Minute)),
-        (61_000, (2, DurationUnit::Minute)),
-        (3_600_000, (60, DurationUnit::Minute)),
-        (3_600_001, (2, DurationUnit::Hour)),
-        (172_800_000, (48, DurationUnit::Hour)),
-        (172_800_001, (3, DurationUnit::Day)),
-        (i64::MAX, (106_751_991_168, DurationUnit::Day)),
-    ] {
-        assert_eq!(duration_parts(millis), expected);
-    }
-}

crates/horizon-client-core/src/block_entity_nbt.rs

@@ -143,9 +143,7 @@ impl<'a> Fields<'a> {
     /// `RandomizableContainer.tryLoadLootTable` / `trySaveLootTable`; true when the
     /// block entity has a loot table (and so saves no items).
     fn loot_table(&mut self) -> bool {
-        let Some(table) =
-            text(self.input.get("LootTable")).and_then(|id| crate::identifier::normalize_id(&id))
-        else {
+        let Some(table) = text(self.input.get("LootTable")) else {
             return false;
         };
         self.put("LootTable", string(&table));
@@ -907,16 +905,6 @@ mod tests {
         assert_eq!(out.get("LootTable"), Some(&string("minecraft:chests/x")));
     }
 
-    #[test]
-    fn invalid_loot_table_leaves_items_intact() {
-        let out = canon(
-            "{id:\"minecraft:barrel\",x:1,y:2,z:3,LootTable:\"INVALID TABLE\",\
-             Items:[{Slot:0b,id:\"minecraft:stone\",count:1}]}",
-        );
-        assert!(out.get("Items").is_some());
-        assert!(out.get("LootTable").is_none());
-    }
-
     #[test]
     fn items_are_validated_and_sorted_by_slot() {
         let out = canon(

crates/horizon-client-core/src/component.rs

@@ -207,11 +207,9 @@ fn style_flag(v: Option<&Value>) -> Option<bool> {
     }
 }
 
-/// ExtraCodecs.UNTRUSTED_URI / Util.parseAndValidateUntrustedUri: http and
-/// https only, scheme case-insensitive. Every `open_url` a server sends must
-/// pass it: anything else (`file:`, a UNC path, a custom protocol handler)
-/// could start a program through the system's URL handler.
-pub fn untrusted_http_url(url: &str) -> bool {
+fn untrusted_http_url(url: &str) -> bool {
+    // ExtraCodecs.UNTRUSTED_URI / Util.parseAndValidateUntrustedUri: http and
+    // https only, scheme case-insensitive.
     url.split_once(':').is_some_and(|(scheme, _)| {
         scheme.eq_ignore_ascii_case("http") || scheme.eq_ignore_ascii_case("https")
     })

crates/horizon-client-core/src/lang.rs

@@ -100,222 +100,6 @@ impl ResourceSource for Bundled {
             "assets/horizon/lang/ur_pk.json" => {
                 include_str!("../../horizon-client/assets/horizon/lang/ur_pk.json")
             }
-            "assets/horizon/lang/fa_ir.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fa_ir.json")
-            }
-            "assets/horizon/lang/he_il.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/he_il.json")
-            }
-            "assets/horizon/lang/hu_hu.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/hu_hu.json")
-            }
-            "assets/horizon/lang/ro_ro.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ro_ro.json")
-            }
-            "assets/horizon/lang/da_dk.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/da_dk.json")
-            }
-            "assets/horizon/lang/fi_fi.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fi_fi.json")
-            }
-            "assets/horizon/lang/no_no.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/no_no.json")
-            }
-            "assets/horizon/lang/bg_bg.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/bg_bg.json")
-            }
-            "assets/horizon/lang/sk_sk.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sk_sk.json")
-            }
-            "assets/horizon/lang/lt_lt.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/lt_lt.json")
-            }
-            "assets/horizon/lang/it_it.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/it_it.json")
-            }
-            "assets/horizon/lang/nl_nl.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/nl_nl.json")
-            }
-            "assets/horizon/lang/vi_vn.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/vi_vn.json")
-            }
-            "assets/horizon/lang/th_th.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/th_th.json")
-            }
-            "assets/horizon/lang/ja_jp.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ja_jp.json")
-            }
-            "assets/horizon/lang/ar_sa.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ar_sa.json")
-            }
-            "assets/horizon/lang/pt_br.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/pt_br.json")
-            }
-            "assets/horizon/lang/cs_cz.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/cs_cz.json")
-            }
-            "assets/horizon/lang/sv_se.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sv_se.json")
-            }
-            "assets/horizon/lang/el_gr.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/el_gr.json")
-            }
-            "assets/horizon/lang/ca_es.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ca_es.json")
-            }
-            "assets/horizon/lang/et_ee.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/et_ee.json")
-            }
-            "assets/horizon/lang/lv_lv.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/lv_lv.json")
-            }
-            "assets/horizon/lang/sl_si.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sl_si.json")
-            }
-            "assets/horizon/lang/sr_cs.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sr_cs.json")
-            }
-            "assets/horizon/lang/is_is.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/is_is.json")
-            }
-            "assets/horizon/lang/af_za.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/af_za.json")
-            }
-            "assets/horizon/lang/ms_my.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ms_my.json")
-            }
-            "assets/horizon/lang/be_by.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/be_by.json")
-            }
-            "assets/horizon/lang/sr_sp.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sr_sp.json")
-            }
-            "assets/horizon/lang/az_az.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/az_az.json")
-            }
-            "assets/horizon/lang/uz_uz.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/uz_uz.json")
-            }
-            "assets/horizon/lang/kk_kz.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/kk_kz.json")
-            }
-            "assets/horizon/lang/ka_ge.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ka_ge.json")
-            }
-            "assets/horizon/lang/hy_am.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/hy_am.json")
-            }
-            "assets/horizon/lang/bs_ba.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/bs_ba.json")
-            }
-            "assets/horizon/lang/mk_mk.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/mk_mk.json")
-            }
-            "assets/horizon/lang/sq_al.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sq_al.json")
-            }
-            "assets/horizon/lang/cy_gb.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/cy_gb.json")
-            }
-            "assets/horizon/lang/ga_ie.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ga_ie.json")
-            }
-            "assets/horizon/lang/eu_es.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/eu_es.json")
-            }
-            "assets/horizon/lang/gl_es.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/gl_es.json")
-            }
-            "assets/horizon/lang/fil_ph.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fil_ph.json")
-            }
-            "assets/horizon/lang/ta_in.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ta_in.json")
-            }
-            "assets/horizon/lang/mn_mn.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/mn_mn.json")
-            }
-            "assets/horizon/lang/lo_la.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/lo_la.json")
-            }
-            "assets/horizon/lang/so_so.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/so_so.json")
-            }
-            "assets/horizon/lang/fy_nl.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fy_nl.json")
-            }
-            "assets/horizon/lang/gd_gb.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/gd_gb.json")
-            }
-            "assets/horizon/lang/lb_lu.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/lb_lu.json")
-            }
-            "assets/horizon/lang/ky_kg.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ky_kg.json")
-            }
-            "assets/horizon/lang/kn_in.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/kn_in.json")
-            }
-            "assets/horizon/lang/mt_mt.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/mt_mt.json")
-            }
-            "assets/horizon/lang/eo_uy.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/eo_uy.json")
-            }
-            "assets/horizon/lang/haw_us.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/haw_us.json")
-            }
-            "assets/horizon/lang/ig_ng.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ig_ng.json")
-            }
-            "assets/horizon/lang/la_la.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/la_la.json")
-            }
-            "assets/horizon/lang/tt_ru.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/tt_ru.json")
-            }
-            "assets/horizon/lang/yi_de.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/yi_de.json")
-            }
-            "assets/horizon/lang/yo_ng.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/yo_ng.json")
-            }
-            "assets/horizon/lang/ba_ru.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/ba_ru.json")
-            }
-            "assets/horizon/lang/br_fr.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/br_fr.json")
-            }
-            "assets/horizon/lang/cv_cu.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/cv_cu.json")
-            }
-            "assets/horizon/lang/fo_fo.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fo_fo.json")
-            }
-            "assets/horizon/lang/fur_it.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/fur_it.json")
-            }
-            "assets/horizon/lang/li_li.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/li_li.json")
-            }
-            "assets/horizon/lang/lmo.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/lmo.json")
-            }
-            "assets/horizon/lang/oc_fr.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/oc_fr.json")
-            }
-            "assets/horizon/lang/sah_sah.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/sah_sah.json")
-            }
-            "assets/horizon/lang/se_no.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/se_no.json")
-            }
-            "assets/horizon/lang/szl.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/szl.json")
-            }
-            "assets/horizon/lang/vec_it.json" => {
-                include_str!("../../horizon-client/assets/horizon/lang/vec_it.json")
-            }
             "assets/horizon/lang/de_de.json" | "assets/horizon/lang/de_at.json" => {
                 include_str!("../../horizon-client/assets/horizon/lang/de_de.json")
             }
@@ -388,36 +172,6 @@ pub fn apply_deprecated(map: &mut HashMap<String, String>, json: &[u8]) {
     }
 }
 
-/// `Language.loadFromJson` for one `lang/<code>.json`: its entries go into `map` in file order.
-/// A file that is plain JSON reads as before; any other goes through Gson's lenient reader
-/// (`#`, `//` and `/* */` comments, unquoted or single-quoted names and values, raw control
-/// characters in strings, `=` or `=>` and `;`), which vanilla reads lang files with (expected
-/// from `Language.loadFromJson`, Gson). A file that is not JSON even so adds nothing; a value
-/// that is not a string, number or boolean (`GsonHelper.convertToString`) ends the file there.
-pub fn read_lang_file(bytes: &[u8], map: &mut HashMap<String, String>) {
-    use horizon_world::datafix::json::{Json, parse_lenient};
-    if let Ok(entries) = serde_json::from_slice::<HashMap<String, String>>(bytes) {
-        map.extend(entries);
-        return;
-    }
-    let text = String::from_utf8_lossy(bytes);
-    // Gson's JsonReader skips a leading byte order mark.
-    let text = text.strip_prefix('\u{feff}').unwrap_or(&text);
-    let utf16: Vec<u16> = text.encode_utf16().collect();
-    let Some(Json::Obj(entries)) = parse_lenient(&utf16) else {
-        return;
-    };
-    for (key, value) in entries {
-        let value = match value {
-            Json::Str(s) => String::from_utf16_lossy(&s),
-            Json::Num(n) => n,
-            Json::Bool(b) => b.to_string(),
-            Json::Null | Json::Arr(_) | Json::Obj(_) => break,
-        };
-        map.insert(String::from_utf16_lossy(&key), value);
-    }
-}
-
 impl Language {
     /// ClientLanguage.loadFrom: en_us first, then the selected language, each
     /// from every namespace and every source in priority order (later sources
@@ -443,7 +197,9 @@ impl Language {
                     else {
                         continue;
                     };
-                    read_lang_file(&bytes, &mut map);
+                    if let Ok(entries) = serde_json::from_slice::<HashMap<String, String>>(&bytes) {
+                        map.extend(entries);
+                    }
                 }
             }
         }
@@ -903,165 +659,4 @@ mod tests {
             ["en_us", "fr_fr"]
         );
     }
-
-    fn read(body: &str) -> HashMap<String, String> {
-        let mut map = HashMap::new();
-        read_lang_file(body.as_bytes(), &mut map);
-        map
-    }
-    fn entries(pairs: &[(&str, &str)]) -> HashMap<String, String> {
-        pairs
-            .iter()
-            .map(|(k, v)| ((*k).to_owned(), (*v).to_owned()))
-            .collect()
-    }
-
-    #[test]
-    fn a_plain_json_lang_file_reads_as_before() {
-        let body = "{\"a\": \"Apple \\\"quoted\\\" \\u00e9\", \"b\": \"\", \"a\": \"Again\"}";
-        let strict: HashMap<String, String> = serde_json::from_str(body).unwrap();
-        assert_eq!(read(body), strict);
-        assert_eq!(read(body), entries(&[("a", "Again"), ("b", "")]));
-    }
-
-    #[test]
-    fn lang_files_read_with_comments() {
-        let want = entries(&[("a", "Apple"), ("b", "Banana # not a comment // either")]);
-        for body in [
-            "# header\n{\n# a comment\n\"a\": \"Apple\",\n\"b\": \"Banana # not a comment // either\"\n}\n",
-            "// header\n{\"a\": \"Apple\", // after\n\"b\": \"Banana # not a comment // either\"}",
-            "/* header\n over lines */{\"a\": /* inline */ \"Apple\", \"b\": \"Banana # not a comment // either\"}",
-        ] {
-            assert_eq!(read(body), want, "{body}");
-        }
-    }
-
-    #[test]
-    fn lang_files_read_unquoted_and_single_quoted_names_and_values() {
-        assert_eq!(
-            read("{a: 'Apple', 'b': \"Banana\", c: Cherry}"),
-            entries(&[("a", "Apple"), ("b", "Banana"), ("c", "Cherry")])
-        );
-        // A single-quoted string may hold a double quote, and the reverse.
-        assert_eq!(
-            read("{'a': 'say \"hi\"', \"b\": \"it's\"}"),
-            entries(&[("a", "say \"hi\""), ("b", "it's")])
-        );
-    }
-
-    #[test]
-    fn lang_files_read_raw_control_characters_in_strings() {
-        assert_eq!(
-            read("{\"a\": \"tab\there\", \"b\": \"two\nlines\"}"),
-            entries(&[("a", "tab\there"), ("b", "two\nlines")])
-        );
-    }
-
-    #[test]
-    fn lang_files_read_gson_separators_and_a_byte_order_mark() {
-        assert_eq!(
-            read("\u{feff}{\"a\" = \"Apple\"; \"b\" => \"Banana\"}"),
-            entries(&[("a", "Apple"), ("b", "Banana")])
-        );
-        // A trailing comma before `}` is not JSON even to Gson's lenient reader.
-        assert_eq!(read("{# c\n\"a\": \"Apple\",}"), HashMap::new());
-    }
-
-    #[test]
-    fn numbers_and_booleans_read_as_their_text() {
-        // GsonHelper.convertToString: a primitive reads as its text.
-        assert_eq!(
-            read("{\"a\": 1.50, \"b\": true, \"c\": -2e3}"),
-            entries(&[("a", "1.50"), ("b", "true"), ("c", "-2e3")])
-        );
-    }
-
-    #[test]
-    fn a_value_that_is_no_text_ends_the_file_there() {
-        assert_eq!(
-            read("# c\n{\"a\": \"Apple\", \"b\": [\"x\"], \"c\": \"Cherry\"}"),
-            entries(&[("a", "Apple")])
-        );
-        assert_eq!(read("{\"a\": null, \"b\": \"Banana\"}"), HashMap::new());
-    }
-
-    #[test]
-    fn a_lang_file_that_is_not_json_adds_nothing() {
-        for body in [
-            "# c\n{\"a\": \"Apple\"",
-            "[\"a\"]",
-            "\"a\"",
-            "",
-            "{\"a\": \"Apple\"} {",
-        ] {
-            assert_eq!(read(body), HashMap::new(), "{body:?}");
-        }
-    }
-
-    #[test]
-    fn a_pack_lang_file_with_comments_layers_over_english() {
-        let base = Mem(HashMap::from([(
-            "assets/minecraft/lang/en_us.json".into(),
-            br#"{"a":"Apple","b":"Banana"}"#.to_vec(),
-        )]));
-        let pack = Mem(HashMap::from([(
-            "assets/minecraft/lang/fr_fr.json".into(),
-            b"{\n# Fruits\n\"a\": \"Pomme\"\n}\n".to_vec(),
-        )]));
-        let sources: [&dyn ResourceSource; 2] = [&base, &pack];
-        let fr = Language::load(&sources, "fr_fr");
-        assert_eq!(fr.get("a"), Some("Pomme"));
-        assert_eq!(fr.get("b"), Some("Banana"));
-    }
-
-    /// Every lang file of a downloaded pack, e.g. BACAP Language Pack:
-    /// `HORIZON_LANG_PACK_DIR=<pack>/assets/minecraft/lang cargo test -p horizon-client-core
-    /// lang::tests::every_lang_file_of_a_pack_reads -- --ignored --nocapture`.
-    #[test]
-    #[ignore = "needs a downloaded pack in HORIZON_LANG_PACK_DIR"]
-    fn every_lang_file_of_a_pack_reads() {
-        let Ok(dir) = std::env::var("HORIZON_LANG_PACK_DIR") else {
-            return;
-        };
-        let mut failed = Vec::new();
-        let mut paths: Vec<_> = std::fs::read_dir(dir)
-            .unwrap()
-            .map(|e| e.unwrap().path())
-            .collect();
-        paths.sort();
-        for path in paths {
-            let bytes = std::fs::read(&path).unwrap();
-            let strict = serde_json::from_slice::<HashMap<String, String>>(&bytes).is_ok();
-            let mut map = HashMap::new();
-            read_lang_file(&bytes, &mut map);
-            // An independent count: the distinct `"name":` that start a line.
-            let text = String::from_utf8_lossy(&bytes);
-            let names: std::collections::HashSet<&str> = text
-                .lines()
-                .filter_map(|line| {
-                    let rest = line.trim_start().strip_prefix('"')?;
-                    let mut escaped = false;
-                    let end = rest.char_indices().find_map(|(i, c)| {
-                        let close = c == '"' && !escaped;
-                        escaped = c == '\\' && !escaped;
-                        close.then_some(i)
-                    })?;
-                    rest[end + 1..]
-                        .trim_start()
-                        .starts_with(':')
-                        .then(|| &rest[..end])
-                })
-                .collect();
-            println!(
-                "{}: strict {strict}, {} keys, {} names",
-                path.display(),
-                map.len(),
-                names.len()
-            );
-            if map.is_empty() || map.len() != names.len() {
-                failed.push(path);
-            }
-        }
-        assert!(failed.is_empty(), "{failed:?}");
-    }
 }

crates/horizon-client-core/src/nbt_path.rs

@@ -79,65 +79,28 @@ fn elements(tag: &Tag) -> Option<Vec<Tag>> {
         _ => return None,
     })
 }
-/// `DoubleTag.intValue` / `FloatTag.intValue` floor before the i32 conversion;
-/// integral tags use their intValue narrowing. Byte arrays then keep the low byte.
-pub fn int_value(t: &Tag) -> Option<i32> {
-    Some(match t {
-        Tag::Byte(v) => i32::from(*v),
-        Tag::Short(v) => i32::from(*v),
-        Tag::Int(v) => *v,
-        Tag::Long(v) => *v as i32,
-        Tag::Float(v) => f32::from_bits(*v).floor() as i32,
-        Tag::Double(v) => f64::from_bits(*v).floor() as i32,
-        _ => return None,
-    })
-}
-/// `FloatTag.longValue` truncates; `DoubleTag.longValue` floors before narrowing.
-fn long_value(t: &Tag) -> Option<i64> {
-    Some(match t {
-        Tag::Byte(v) => i64::from(*v),
-        Tag::Short(v) => i64::from(*v),
-        Tag::Int(v) => i64::from(*v),
-        Tag::Long(v) => *v,
-        // FloatTag.longValue truncates; DoubleTag.longValue floors first.
-        Tag::Float(v) => f32::from_bits(*v) as i64,
-        Tag::Double(v) => f64::from_bits(*v).floor() as i64,
-        _ => return None,
-    })
-}
-#[derive(Clone, Copy)]
-enum ElementKind {
-    List,
-    NumericArray,
-}
-impl ElementKind {
-    // Admission only: arrays require NumericTag; lists accept every tag type.
-    fn accepts(self, value: &Tag) -> bool {
-        matches!(self, Self::List)
-            || matches!(
-                value,
-                Tag::Byte(_)
-                    | Tag::Short(_)
-                    | Tag::Int(_)
-                    | Tag::Long(_)
-                    | Tag::Float(_)
-                    | Tag::Double(_)
-            )
+fn number(t: &Tag) -> Option<i64> {
+    match t {
+        Tag::Byte(v) => Some(i64::from(*v)),
+        Tag::Short(v) => Some(i64::from(*v)),
+        Tag::Int(v) => Some(i64::from(*v)),
+        Tag::Long(v) => Some(*v),
+        _ => None,
     }
 }
-/// Rust view adapter: run `f` over the elements, then write arrays using their numeric accessor.
+/// Run `f` over the elements of a list/array, writing array results back.
 /// None when `tag` is not list-like.
-fn with_elements<R>(tag: &mut Tag, f: impl FnOnce(&mut Vec<Tag>, ElementKind) -> R) -> Option<R> {
+fn with_elements<R>(tag: &mut Tag, f: impl FnOnce(&mut Vec<Tag>) -> R) -> Option<R> {
     match tag {
-        Tag::List(l) => Some(f(l, ElementKind::List)),
+        Tag::List(l) => Some(f(l)),
         Tag::ByteArray(_) | Tag::IntArray(_) | Tag::LongArray(_) => {
             let mut v = elements(tag)?;
-            let r = f(&mut v, ElementKind::NumericArray);
+            let r = f(&mut v);
+            let nums: Vec<i64> = v.iter().filter_map(number).collect();
             match tag {
-                // Float/double byteValue uses intValue's floor, then narrows.
-                Tag::ByteArray(a) => *a = v.iter().filter_map(int_value).map(|n| n as u8).collect(),
-                Tag::IntArray(a) => *a = v.iter().filter_map(int_value).collect(),
-                Tag::LongArray(a) => *a = v.iter().filter_map(long_value).collect(),
+                Tag::ByteArray(a) => *a = nums.iter().map(|n| *n as u8).collect(),
+                Tag::IntArray(a) => *a = nums.iter().map(|n| *n as i32).collect(),
+                Tag::LongArray(a) => *a = nums,
                 _ => {}
             }
             Some(r)
@@ -194,20 +157,6 @@ impl NbtPath {
     pub fn is_empty(&self) -> bool {
         self.nodes.is_empty()
     }
-    /// Whether this selects a compound-field chain, including filtered or quoted fields.
-    /// Matching a root or child does not change that subtree's writer provenance.
-    pub fn is_field_path(&self, fields: &[&str]) -> bool {
-        let mut fields = fields.iter();
-        for node in &self.nodes {
-            match node {
-                Node::MatchRoot(_) => {}
-                Node::Child(name) | Node::MatchChild(name, _)
-                    if fields.next().copied() == Some(name.as_str()) => {}
-                _ => return false,
-            }
-        }
-        fields.next().is_none()
-    }
     fn not_found(&self, node: usize) -> PathError {
         let end = self.ends[node];
         PathError::new(
@@ -400,7 +349,7 @@ impl NbtPath {
         });
         removed
     }
-    /// `NbtPathArgument.NbtPath.insert`: insert accepted tags into every reached collection.
+    /// `insert` (also append and prepend): into every list the path reaches.
     pub fn insert(
         &self,
         index: i32,
@@ -423,23 +372,19 @@ impl NbtPath {
                 return;
             }
             let shown = crate::snbt::to_snbt(target);
-            let result = with_elements(target, |list, kind| {
+            let result = with_elements(target, |list| {
                 let start = if index < 0 {
                     list.len() as i64 + i64::from(index) + 1
                 } else {
                     i64::from(index)
                 };
                 let mut any = false;
-                let mut at = start;
-                for v in values {
-                    if !kind.accepts(v) {
-                        continue;
-                    }
+                for (n, v) in values.iter().enumerate() {
+                    let at = start + n as i64;
                     if at < 0 || at as usize > list.len() {
                         return Err(CollectionError::InvalidIndex(at as i32));
                     }
                     list.insert(at as usize, v.clone());
-                    at += 1;
                     any = true;
                 }
                 Ok(any)
@@ -483,8 +428,7 @@ fn preferred_parent(node: &Node) -> Tag {
         _ => Tag::Compound(Compound::new()),
     }
 }
-/// Children of `parent`; the array creation arm follows
-/// `NbtPathArgument.AllElementsNode.getOrCreateTag` admission.
+/// `getOrCreateTag` (or `getTag` without `create`): the children of `parent`.
 fn step_mut(
     node: &Node,
     parent: &mut Tag,
@@ -524,14 +468,11 @@ fn step_mut(
         }
         Node::AllElements => {
             let make = create;
-            let _ = with_elements(parent, |list, kind| {
+            let _ = with_elements(parent, |list| {
                 if list.is_empty() {
                     if let Some(make) = make {
-                        let value = make();
-                        if kind.accepts(&value) {
-                            list.push(value);
-                            out(&mut list[0]);
-                        }
+                        list.push(make());
+                        out(&mut list[0]);
                     }
                 } else {
                     for t in list.iter_mut() {
@@ -541,7 +482,7 @@ fn step_mut(
             });
         }
         Node::Index(i) => {
-            let _ = with_elements(parent, |list, _kind| {
+            let _ = with_elements(parent, |list| {
                 let n = list.len() as i64;
                 let idx = if *i < 0 {
                     n + i64::from(*i)
@@ -577,8 +518,7 @@ fn step_mut(
         }
     }
 }
-/// Element setters follow `NbtPathArgument.AllElementsNode.setTag` and
-/// `NbtPathArgument.IndexedElementNode.setTag`; object nodes replace their children.
+/// `Node.setTag`: replace the child(ren) of `parent` with `value`.
 fn set_tag(node: &Node, parent: &mut Tag, value: &Tag) -> usize {
     match node {
         Node::Child(name) => {
@@ -598,36 +538,29 @@ fn set_tag(node: &Node, parent: &mut Tag, value: &Tag) -> usize {
             }
             0
         }
-        Node::AllElements => with_elements(parent, |list, kind| {
-            let len = list.len();
-            if len == 0 {
-                if kind.accepts(value) {
-                    list.push(value.clone());
-                }
-                // AllElementsNode returns 1 here even when addTag rejects.
+        Node::AllElements => with_elements(parent, |list| {
+            if list.is_empty() {
+                list.push(value.clone());
                 return 1;
             }
-            // Compare the original tags, before numeric conversion.
             let changed = list.iter().filter(|t| *t != value).count();
             if changed == 0 {
                 return 0;
             }
-            list.clear();
-            if !kind.accepts(value) {
-                return 0;
+            for t in list.iter_mut() {
+                *t = value.clone();
             }
-            list.resize(len, value.clone());
             changed
         })
         .unwrap_or(0),
-        Node::Index(i) => with_elements(parent, |list, kind| {
+        Node::Index(i) => with_elements(parent, |list| {
             let n = list.len() as i64;
             let idx = if *i < 0 {
                 n + i64::from(*i)
             } else {
                 i64::from(*i)
             };
-            if (0..n).contains(&idx) && list[idx as usize] != *value && kind.accepts(value) {
+            if (0..n).contains(&idx) && list[idx as usize] != *value {
                 list[idx as usize] = value.clone();
                 1
             } else {
@@ -653,7 +586,6 @@ fn set_tag(node: &Node, parent: &mut Tag, value: &Tag) -> usize {
         Node::MatchRoot(_) => 0,
     }
 }
-/// Removal arms, including `NbtPathArgument.AllElementsNode.removeTag`.
 fn remove_tag(node: &Node, parent: &mut Tag) -> usize {
     match node {
         Node::Child(name) => match parent {
@@ -671,13 +603,13 @@ fn remove_tag(node: &Node, parent: &mut Tag) -> usize {
             }
             _ => 0,
         },
-        Node::AllElements => with_elements(parent, |l, _kind| {
+        Node::AllElements => with_elements(parent, |l| {
             let n = l.len();
             l.clear();
             n
         })
         .unwrap_or(0),
-        Node::Index(i) => with_elements(parent, |l, _kind| {
+        Node::Index(i) => with_elements(parent, |l| {
             let n = l.len() as i64;
             let idx = if *i < 0 {
                 n + i64::from(*i)
@@ -840,25 +772,6 @@ fn parse_compound(text: &str, i: usize) -> Result<(Tag, usize), PathError> {
 #[cfg(test)]
 mod tests {
     use super::*;
-    #[test]
-    fn field_provenance_handles_quotes_and_filters_without_matching_lists() {
-        for text in [
-            "blockState.properties",
-            "\"blockState\".\"properties\"",
-            "{source:1b}.blockState.properties",
-            "blockState{id:\"minecraft:piston_head\"}.properties",
-        ] {
-            let path = NbtPath::parse(text).unwrap();
-            assert!(path.is_field_path(&["blockState", "properties"]));
-            assert!(!path.is_field_path(&["blockState"]));
-        }
-        assert!(NbtPath::parse("{source:1b}").unwrap().is_field_path(&[]));
-        assert!(
-            !NbtPath::parse("blockState[].properties")
-                .unwrap()
-                .is_field_path(&["blockState", "properties"])
-        );
-    }
 
     fn tag(s: &str) -> Tag {
         parse_snbt(s).unwrap().0
@@ -974,100 +887,6 @@ mod tests {
         ));
     }
 
-    #[test]
-    fn numeric_array_edits_use_the_destination_numeric_accessor() {
-        for (initial, value, inserted, indexed, all) in [
-            (
-                "{v:[B;1b,2b]}",
-                "-3.5f",
-                "{v:[B;1b,-4b,2b]}",
-                "{v:[B;-4b,2b]}",
-                "{v:[B;-4b,-4b]}",
-            ),
-            (
-                "{v:[B;1b,2b]}",
-                "-3.5d",
-                "{v:[B;1b,-4b,2b]}",
-                "{v:[B;-4b,2b]}",
-                "{v:[B;-4b,-4b]}",
-            ),
-            (
-                "{v:[I;1,2]}",
-                "-3.5f",
-                "{v:[I;1,-4,2]}",
-                "{v:[I;-4,2]}",
-                "{v:[I;-4,-4]}",
-            ),
-            (
-                "{v:[I;1,2]}",
-                "-3.5d",
-                "{v:[I;1,-4,2]}",
-                "{v:[I;-4,2]}",
-                "{v:[I;-4,-4]}",
-            ),
-            (
-                "{v:[L;1L,2L]}",
-                "-3.5f",
-                "{v:[L;1L,-3L,2L]}",
-                "{v:[L;-3L,2L]}",
-                "{v:[L;-3L,-3L]}",
-            ),
-            (
-                "{v:[L;1L,2L]}",
-                "-3.5d",
-                "{v:[L;1L,-4L,2L]}",
-                "{v:[L;-4L,2L]}",
-                "{v:[L;-4L,-4L]}",
-            ),
-        ] {
-            let value = tag(value);
-            let mut root = tag(initial);
-            assert_eq!(
-                path("v")
-                    .insert(1, &mut root, std::slice::from_ref(&value))
-                    .unwrap(),
-                1
-            );
-            assert_eq!(root, tag(inserted));
-            let mut root = tag(initial);
-            assert_eq!(path("v[0]").set(&mut root, &value).unwrap(), 1);
-            assert_eq!(root, tag(indexed));
-            let mut root = tag(initial);
-            assert_eq!(path("v[]").set(&mut root, &value).unwrap(), 2);
-            assert_eq!(root, tag(all));
-        }
-    }
-
-    #[test]
-    fn numeric_arrays_reject_nonnumeric_insert_and_indexed_set() {
-        for initial in ["{v:[B;1b,2b]}", "{v:[I;1,2]}", "{v:[L;1L,2L]}"] {
-            let original = tag(initial);
-            let value = tag("\"bad\"");
-            for index in [0, 99, -99] {
-                let mut root = original.clone();
-                assert_eq!(
-                    path("v")
-                        .insert(index, &mut root, std::slice::from_ref(&value))
-                        .unwrap(),
-                    0
-                );
-                assert_eq!(root, original);
-            }
-            let mut root = original.clone();
-            assert_eq!(path("v[0]").set(&mut root, &value).unwrap(), 0);
-            assert_eq!(root, original);
-        }
-    }
-
-    #[test]
-    fn empty_array_wildcard_set_preserves_vanillas_count_on_rejection() {
-        for initial in ["{v:[B;]}", "{v:[I;]}", "{v:[L;]}"] {
-            let mut root = tag(initial);
-            assert_eq!(path("v[]").set(&mut root, &tag("\"bad\"")).unwrap(), 1);
-            assert_eq!(root, tag(initial));
-        }
-    }
-
     #[test]
     fn partial_comparison() {
         let actual = tag("{a:1,b:{c:[1,2,3],d:\"x\"},e:2}");

crates/horizon-client-core/src/registries.rs

@@ -173,16 +173,6 @@ impl Registries {
         fill(&mut self.templates, "templates");
         fill(&mut self.persistent_components, "persistent_components");
         fill(&mut self.learnable_recipes, "learnable_recipes");
-        if self.summonable.is_empty() {
-            self.summonable = strings(&r["summonable"]);
-            self.summonable.sort();
-            self.summonable.dedup();
-        }
-        if self.entity_types.is_empty() {
-            self.entity_types = strings(&r["entity_types"]);
-            self.entity_types.sort();
-            self.entity_types.dedup();
-        }
         const RELOADED: [&str; 5] = [
             "minecraft:advancement",
             "minecraft:recipe",
@@ -246,16 +236,6 @@ impl Registries {
         fill(&mut self.templates, &e.templates);
         fill(&mut self.persistent_components, &e.persistent_components);
         fill(&mut self.learnable_recipes, &e.learnable_recipes);
-        if self.summonable.is_empty() {
-            self.summonable.clone_from(&e.summonable);
-            self.summonable.sort();
-            self.summonable.dedup();
-        }
-        if self.entity_types.is_empty() {
-            self.entity_types.clone_from(&e.entity_types);
-            self.entity_types.sort();
-            self.entity_types.dedup();
-        }
         for (name, ids) in &e.by_registry {
             if !self.by_registry.contains_key(name) {
                 self.by_registry.insert(name.clone(), ids.clone());

crates/horizon-client-core/src/scoreboard.rs

@@ -964,10 +964,6 @@ impl Scoreboard {
     pub fn tracked(&self) -> Vec<String> {
         self.holder_order.stream().map(str::to_owned).collect()
     }
-    /// Every holder on a team (`teamsByPlayer.keySet()`).
-    pub fn team_members(&self) -> impl Iterator<Item = &str> {
-        self.team_of.keys().map(String::as_str)
-    }
 
     // teams
     pub fn team(&self, name: &str) -> Option<&Team> {

crates/horizon-client-core/src/snbt.rs

@@ -8,20 +8,11 @@ pub use horizon_world::snbt_text::{java_double, java_float, quote_and_escape, to
 
 // ---- the coloured form -----------------------------------------------------
 
-/// Writer provenance for a live moving-piston command read, or its selected subtree.
-#[derive(Clone, Copy)]
-pub enum PistonPart {
-    Entity,
-    State,
-    Properties,
-}
-
 struct Pretty {
     indentation: String,
     result: Text,
     indent_depth: usize,
     depth: usize,
-    piston: Option<PistonPart>,
 }
 fn is_numeric(t: &Tag) -> bool {
     matches!(
@@ -67,10 +58,6 @@ impl Pretty {
         self.lit("]", None);
     }
     fn sub(&mut self, tag: &Tag, indent: bool) {
-        self.sub_with(tag, indent, None);
-    }
-    fn sub_with(&mut self, tag: &Tag, indent: bool, piston: Option<PistonPart>) {
-        let previous = std::mem::replace(&mut self.piston, piston);
         if indent {
             self.indent_depth += 1;
         }
@@ -80,7 +67,6 @@ impl Pretty {
             self.indent_depth -= 1;
         }
         self.depth -= 1;
-        self.piston = previous;
     }
     fn visit(&mut self, tag: &Tag) {
         match tag {
@@ -171,11 +157,7 @@ impl Pretty {
                 "\n"
             };
             let n = c.len();
-            let entries = match self.piston {
-                Some(part) => piston_hash_order(c, part),
-                None => java_hash_order(c),
-            };
-            for (i, (k, v)) in entries.into_iter().enumerate() {
+            for (i, (k, v)) in java_hash_order(c).into_iter().enumerate() {
                 self.lit(&entry, None);
                 let key = string_of(k);
                 if !key.is_empty()
@@ -189,12 +171,7 @@ impl Pretty {
                 }
                 self.lit(":", None);
                 self.lit(" ", None);
-                let child = match (self.piston, key.as_str()) {
-                    (Some(PistonPart::Entity), "blockState") => Some(PistonPart::State),
-                    (Some(PistonPart::State), "properties") => Some(PistonPart::Properties),
-                    _ => None,
-                };
-                self.sub_with(v, true, child);
+                self.sub(v, true);
                 if i + 1 < n {
                     self.lit(",", None);
                     self.lit(spacing, None);
@@ -209,61 +186,22 @@ impl Pretty {
         }
     }
 }
-fn hash_bucket(len: usize, key: &horizon_world::nbt::JavaString) -> usize {
-    let mut capacity = 16usize;
-    while len > capacity * 3 / 4 {
-        capacity *= 2;
-    }
-    let h = string_of(key)
-        .encode_utf16()
-        .fold(0u32, |h, ch| h.wrapping_mul(31).wrapping_add(u32::from(ch)));
-    ((h ^ (h >> 16)) as usize) & (capacity - 1)
-}
-fn piston_hash_order(
-    c: &horizon_world::nbt::Compound,
-    part: PistonPart,
-) -> Vec<(&horizon_world::nbt::JavaString, &Tag)> {
-    let mut entries: Vec<_> = c.iter().collect();
-    match part {
-        PistonPart::Entity => {
-            // saveAdditional, then the base's components and saveMetadata.
-            let fields = [
-                "blockState",
-                "facing",
-                "progress",
-                "extending",
-                "source",
-                "components",
-                "id",
-                "x",
-                "y",
-                "z",
-            ];
-            entries.sort_by_key(|(k, _)| {
-                (
-                    hash_bucket(c.len(), k),
-                    fields
-                        .iter()
-                        .position(|s| *s == string_of(k))
-                        .unwrap_or(fields.len()),
-                )
-            });
-        }
-        PistonPart::Properties => {
-            // StateDefinition builds property codecs in sorted-name order.
-            // DFU's nested map-pair encoder writes the second codec first.
-            entries.sort_by_key(|(k, _)| (hash_bucket(c.len(), k), std::cmp::Reverse(*k)));
-        }
-        PistonPart::State => return java_hash_order(c),
-    }
-    entries
-}
 /// The iteration order of the `HashMap<String, Tag>` a `CompoundTag` holds,
 /// for a map that grew to its size by insertion: buckets by
 /// `HashMap.hash(String.hashCode())`, keys sharing a bucket in key order.
 pub fn java_hash_order(
     c: &horizon_world::nbt::Compound,
 ) -> Vec<(&horizon_world::nbt::JavaString, &Tag)> {
+    let mut capacity = 16usize;
+    while c.len() > capacity * 3 / 4 {
+        capacity *= 2;
+    }
+    let bucket = |k: &horizon_world::nbt::JavaString| {
+        let h = string_of(k)
+            .encode_utf16()
+            .fold(0u32, |h, ch| h.wrapping_mul(31).wrapping_add(u32::from(ch)));
+        ((h ^ (h >> 16)) as usize) & (capacity - 1)
+    };
     // Keys sharing a bucket iterate in insertion order: the order vanilla's
     // savers write them, as far as it is known here.
     const WRITE_ORDER: &[&str] = &[
@@ -330,7 +268,7 @@ pub fn java_hash_order(
             .unwrap_or(WRITE_ORDER.len())
     };
     let mut entries: Vec<_> = c.iter().collect();
-    entries.sort_by_key(|(k, _)| (hash_bucket(c.len(), k), rank(k)));
+    entries.sort_by_key(|(k, _)| (bucket(k), rank(k)));
     entries
 }
 /// `NbtUtils.toPrettyComponent`: the coloured, unindented form.
@@ -343,19 +281,6 @@ pub fn pretty_indented(tag: &Tag, indentation: &str) -> Text {
         result: Text::empty(),
         indent_depth: 0,
         depth: 0,
-        piston: None,
-    };
-    p.visit(tag);
-    p.result
-}
-/// Command-only writer order; ordinary pretty printing keeps its existing policy.
-pub fn pretty_piston(tag: &Tag, part: PistonPart) -> Text {
-    let mut p = Pretty {
-        indentation: String::new(),
-        result: Text::empty(),
-        indent_depth: 0,
-        depth: 0,
-        piston: Some(part),
     };
     p.visit(tag);
     p.result
@@ -370,33 +295,6 @@ mod tests {
         to_snbt(&parse_snbt(s).unwrap().0)
     }
     #[test]
-    fn live_piston_writer_order_does_not_change_default_pretty() {
-        let tag = parse_snbt(
-            r#"{id:"minecraft:piston",blockState:{id:"minecraft:piston_head",properties:{facing:"east",short:"false",type:"normal"}},components:{},x:1,y:100,z:0,facing:5b,progress:0.0f,source:1b,extending:1b}"#,
-        ).unwrap().0;
-        let ordinary = r#"{blockState: {id: "minecraft:piston_head", properties: {facing: "east", short: "false", type: "normal"}}, components: {}, x: 1, facing: 5b, progress: 0.0f, y: 100, z: 0, id: "minecraft:piston", source: 1b, extending: 1b}"#;
-        assert_eq!(pretty(&tag).plain(), ordinary);
-        assert_eq!(
-            pretty_piston(&tag, PistonPart::Entity).plain(),
-            r#"{blockState: {id: "minecraft:piston_head", properties: {short: "false", facing: "east", type: "normal"}}, components: {}, x: 1, facing: 5b, progress: 0.0f, y: 100, z: 0, source: 1b, id: "minecraft:piston", extending: 1b}"#,
-        );
-        let state = tag.get("blockState").unwrap();
-        assert_eq!(
-            pretty_piston(state, PistonPart::State).plain(),
-            r#"{id: "minecraft:piston_head", properties: {short: "false", facing: "east", type: "normal"}}"#,
-        );
-        let props = state.get("properties").unwrap();
-        assert_eq!(
-            pretty_piston(props, PistonPart::Properties).plain(),
-            r#"{short: "false", facing: "east", type: "normal"}"#,
-        );
-        assert_eq!(
-            pretty(props).plain(),
-            r#"{facing: "east", short: "false", type: "normal"}"#
-        );
-        assert_eq!(pretty(&tag).plain(), ordinary);
-    }
-    #[test]
     fn compact_form_matches_vanilla() {
         assert_eq!(
             rt("{b:1b,a:\"x\",c:[1,2],d:1.5f,e:2d,f:3L,g:4s}"),

crates/horizon-client-input/src/actions.rs

@@ -1,146 +0,0 @@
-//! Every input the game names: vanilla's key mappings (`Options.keyMappings`) and Horizon's
-//! pad-only actions. Held state is asked by [`Action`] ([`crate::held::HeldKeys::held`]), not by a
-//! key: code that wants a mapping says which one, and every device that can hold it counts.
-use winit::keyboard::KeyCode;
-
-macro_rules! actions {
-    ($($variant:ident, $name:literal, $key:expr;)*) => {
-        /// A key mapping, or a pad-only action.
-        #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-        pub enum Action {
-            $($variant,)*
-        }
-        impl Action {
-            /// In `Options.keyMappings` order, then Horizon's own mappings, the pad-only actions last.
-            pub const ALL: &[Action] = &[$(Action::$variant,)*];
-            /// The saved name: vanilla's for a mapping, `pad.*` for Horizon's own.
-            pub fn name(self) -> &'static str {
-                match self {
-                    $(Action::$variant => $name,)*
-                }
-            }
-            /// The default key the game's held state keeps this action under. `None` for what
-            /// isn't held as a key there: a mouse mapping, one with no default, a pad-only action,
-            /// and the debug keys, which act on the physical key (`debug_keys.rs`) and whose
-            /// defaults are other mappings' keys.
-            pub fn key(self) -> Option<KeyCode> {
-                match self {
-                    $(Action::$variant => $key,)*
-                }
-            }
-        }
-    };
-}
-
-actions! {
-    Attack, "key.attack", None;
-    Use, "key.use", None;
-    Forward, "key.forward", Some(KeyCode::KeyW);
-    Left, "key.left", Some(KeyCode::KeyA);
-    Back, "key.back", Some(KeyCode::KeyS);
-    Right, "key.right", Some(KeyCode::KeyD);
-    Jump, "key.jump", Some(KeyCode::Space);
-    Sneak, "key.sneak", Some(KeyCode::ShiftLeft);
-    Sprint, "key.sprint", Some(KeyCode::ControlLeft);
-    Drop, "key.drop", Some(KeyCode::KeyQ);
-    Inventory, "key.inventory", Some(KeyCode::KeyE);
-    Chat, "key.chat", Some(KeyCode::KeyT);
-    Playerlist, "key.playerlist", Some(KeyCode::Tab);
-    PickItem, "key.pickItem", None;
-    Command, "key.command", Some(KeyCode::Slash);
-    Friends, "key.friends", Some(KeyCode::KeyO);
-    SocialInteractions, "key.socialInteractions", Some(KeyCode::KeyP);
-    ToggleGui, "key.toggleGui", Some(KeyCode::F1);
-    ToggleSpectatorShaderEffects, "key.toggleSpectatorShaderEffects", Some(KeyCode::F4);
-    Screenshot, "key.screenshot", Some(KeyCode::F2);
-    TogglePerspective, "key.togglePerspective", Some(KeyCode::F5);
-    SmoothCamera, "key.smoothCamera", None;
-    Fullscreen, "key.fullscreen", Some(KeyCode::F11);
-    SpectatorOutlines, "key.spectatorOutlines", None;
-    SpectatorHotbar, "key.spectatorHotbar", None;
-    SwapOffhand, "key.swapOffhand", Some(KeyCode::KeyF);
-    SaveToolbarActivator, "key.saveToolbarActivator", Some(KeyCode::KeyC);
-    LoadToolbarActivator, "key.loadToolbarActivator", Some(KeyCode::KeyX);
-    Advancements, "key.advancements", Some(KeyCode::KeyL);
-    QuickActions, "key.quickActions", Some(KeyCode::KeyG);
-    DebugOverlay, "key.debug.overlay", None;
-    DebugModifier, "key.debug.modifier", None;
-    Hotbar1, "key.hotbar.1", Some(KeyCode::Digit1);
-    Hotbar2, "key.hotbar.2", Some(KeyCode::Digit2);
-    Hotbar3, "key.hotbar.3", Some(KeyCode::Digit3);
-    Hotbar4, "key.hotbar.4", Some(KeyCode::Digit4);
-    Hotbar5, "key.hotbar.5", Some(KeyCode::Digit5);
-    Hotbar6, "key.hotbar.6", Some(KeyCode::Digit6);
-    Hotbar7, "key.hotbar.7", Some(KeyCode::Digit7);
-    Hotbar8, "key.hotbar.8", Some(KeyCode::Digit8);
-    Hotbar9, "key.hotbar.9", Some(KeyCode::Digit9);
-    DebugReloadChunk, "key.debug.reloadChunk", None;
-    DebugShowHitboxes, "key.debug.showHitboxes", None;
-    DebugClearChat, "key.debug.clearChat", None;
-    DebugCrash, "key.debug.crash", None;
-    DebugShowChunkBorders, "key.debug.showChunkBorders", None;
-    DebugShowAdvancedTooltips, "key.debug.showAdvancedTooltips", None;
-    DebugCopyRecreateCommand, "key.debug.copyRecreateCommand", None;
-    DebugSpectate, "key.debug.spectate", None;
-    DebugSwitchGameMode, "key.debug.switchGameMode", None;
-    DebugDebugOptions, "key.debug.debugOptions", None;
-    DebugFocusPause, "key.debug.focusPause", None;
-    DebugDumpDynamicTextures, "key.debug.dumpDynamicTextures", None;
-    DebugReloadResourcePacks, "key.debug.reloadResourcePacks", None;
-    DebugProfiling, "key.debug.profiling", None;
-    DebugCopyLocation, "key.debug.copyLocation", None;
-    DebugDumpVersion, "key.debug.dumpVersion", None;
-    DebugProfilingChart, "key.debug.profilingChart", None;
-    DebugFpsCharts, "key.debug.fpsCharts", None;
-    DebugNetworkCharts, "key.debug.networkCharts", None;
-    DebugLightmapTexture, "key.debug.lightmapTexture", None;
-    DebugImprovedTransparency, "key.debug.improvedTransparency", None;
-    Emote, "key.emote", Some(KeyCode::KeyB);
-    HotbarPrevious, "pad.hotbarPrevious", None;
-    HotbarNext, "pad.hotbarNext", None;
-}
-
-impl Action {
-    pub fn parse(name: &str) -> Option<Self> {
-        Self::ALL.iter().copied().find(|a| a.name() == name)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::keybinds::{self, HORIZON_MAPPINGS, KeyBinds, MAPPINGS, all_mappings};
-
-    #[test]
-    fn every_mapping_is_an_action_in_order() {
-        let names: Vec<&str> = Action::ALL.iter().map(|a| a.name()).collect();
-        let mappings: Vec<&str> = MAPPINGS.iter().map(|m| m.0).collect();
-        assert_eq!(names[..mappings.len()], mappings[..]);
-        let horizon: Vec<&str> = HORIZON_MAPPINGS.iter().map(|m| m.0).collect();
-        let end = mappings.len() + horizon.len();
-        assert_eq!(names[mappings.len()..end], horizon[..]);
-        for action in &names[end..] {
-            assert!(action.starts_with("pad."), "{action}");
-        }
-    }
-
-    #[test]
-    fn an_actions_key_is_its_mappings_default_key() {
-        for (name, _, category) in all_mappings() {
-            let action = Action::parse(name).unwrap();
-            let want = if *category == "debug" {
-                None
-            } else {
-                keybinds::key_code(KeyBinds::default_of(name))
-            };
-            assert_eq!(action.key(), want, "{name}");
-        }
-    }
-
-    #[test]
-    fn every_bindable_action_is_an_action() {
-        for (name, _) in crate::gamepad::ACTIONS {
-            assert!(Action::parse(name).is_some(), "{name}");
-        }
-    }
-}

crates/horizon-client-input/src/held.rs

@@ -1,182 +0,0 @@
-//! The keys a player's mappings hold, as their vanilla default keys, and which
-//! devices hold each one. A key stays held while any device holds it, so one
-//! device letting go (splitscreen moving the keyboard to another player, say)
-//! can't release what another still presses.
-
-use crate::actions::Action;
-use std::collections::HashMap;
-use winit::keyboard::KeyCode;
-
-/// Where a press came from.
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
-pub enum Source {
-    /// The keyboard and mouse.
-    Keyboard,
-    Pad,
-    /// `horizon-ctl`'s `key` and `mouse` and the agent commands that walk and click.
-    Agent,
-}
-
-impl Source {
-    fn bit(self) -> u8 {
-        match self {
-            Source::Keyboard => 1,
-            Source::Pad => 2,
-            Source::Agent => 4,
-        }
-    }
-}
-
-#[derive(Clone, Debug, Default, PartialEq, Eq)]
-pub struct HeldKeys {
-    held: HashMap<KeyCode, u8>,
-}
-
-impl HeldKeys {
-    /// Whether anything holds this mapping: every device, whatever the mapping is bound to.
-    pub fn held(&self, action: Action) -> bool {
-        action.key().is_some_and(|key| self.raw(&key))
-    }
-    /// Whether a key that is no mapping's default is held (Right Shift, the arrows, Alt, the system
-    /// key), or the key a caller already holds as a key: most code wants [`HeldKeys::held`].
-    pub fn raw(&self, key: &KeyCode) -> bool {
-        self.held.contains_key(key)
-    }
-    /// The old way of asking, by a mapping's default key; clippy refuses it (`clippy.toml`). It
-    /// stays so that a change written against it says what to use instead.
-    pub fn contains(&self, key: &KeyCode) -> bool {
-        self.raw(key)
-    }
-    /// `source` holds `key`. True when nothing held it before.
-    pub fn press(&mut self, key: KeyCode, source: Source) -> bool {
-        let sources = self.held.entry(key).or_insert(0);
-        let new = *sources == 0;
-        *sources |= source.bit();
-        new
-    }
-    /// `source` lets go of `key`. True when nothing holds it any more.
-    pub fn release(&mut self, key: &KeyCode, source: Source) -> bool {
-        let Some(sources) = self.held.get_mut(key) else {
-            return true;
-        };
-        *sources &= !source.bit();
-        if *sources == 0 {
-            self.held.remove(key);
-            true
-        } else {
-            false
-        }
-    }
-    pub fn held_by(&self, key: &KeyCode, source: Source) -> bool {
-        self.held
-            .get(key)
-            .is_some_and(|sources| sources & source.bit() != 0)
-    }
-    /// `source` lets go of everything: the keys nothing holds any more.
-    pub fn release_source(&mut self, source: Source) -> Vec<KeyCode> {
-        let keys: Vec<KeyCode> = self
-            .held
-            .iter()
-            .filter(|(_, sources)| *sources & source.bit() != 0)
-            .map(|(key, _)| *key)
-            .collect();
-        keys.into_iter()
-            .filter(|key| self.release(key, source))
-            .collect()
-    }
-    /// Held, by the keyboard unless a device already holds it: for callers
-    /// that don't say where the press came from.
-    pub fn insert(&mut self, key: KeyCode) -> bool {
-        if self.raw(&key) {
-            return false;
-        }
-        self.press(key, Source::Keyboard)
-    }
-    /// Let go of `key` whoever holds it.
-    pub fn remove(&mut self, key: &KeyCode) -> bool {
-        self.held.remove(key).is_some()
-    }
-    pub fn clear(&mut self) {
-        self.held.clear();
-    }
-    pub fn is_empty(&self) -> bool {
-        self.held.is_empty()
-    }
-    pub fn len(&self) -> usize {
-        self.held.len()
-    }
-    pub fn iter(&self) -> impl Iterator<Item = &KeyCode> {
-        self.held.keys()
-    }
-}
-
-impl IntoIterator for HeldKeys {
-    type Item = KeyCode;
-    type IntoIter = std::collections::hash_map::IntoKeys<KeyCode, u8>;
-    fn into_iter(self) -> Self::IntoIter {
-        self.held.into_keys()
-    }
-}
-
-impl<'a> IntoIterator for &'a HeldKeys {
-    type Item = &'a KeyCode;
-    type IntoIter = std::collections::hash_map::Keys<'a, KeyCode, u8>;
-    fn into_iter(self) -> Self::IntoIter {
-        self.held.keys()
-    }
-}
-
-impl FromIterator<KeyCode> for HeldKeys {
-    fn from_iter<I: IntoIterator<Item = KeyCode>>(keys: I) -> Self {
-        let mut held = HeldKeys::default();
-        for key in keys {
-            held.insert(key);
-        }
-        held
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn a_key_stays_held_while_any_device_holds_it() {
-        let mut keys = HeldKeys::default();
-        assert!(keys.press(KeyCode::Space, Source::Pad));
-        assert!(!keys.press(KeyCode::Space, Source::Keyboard));
-        assert!(keys.press(KeyCode::KeyW, Source::Keyboard));
-        assert_eq!(keys.release_source(Source::Keyboard), vec![KeyCode::KeyW]);
-        assert!(keys.held(Action::Jump) && !keys.held(Action::Forward));
-        assert!(keys.held_by(&KeyCode::Space, Source::Pad));
-        assert!(!keys.held_by(&KeyCode::Space, Source::Keyboard));
-        assert!(keys.release(&KeyCode::Space, Source::Pad));
-        assert!(keys.is_empty());
-    }
-
-    #[test]
-    fn a_script_holds_a_key_by_itself() {
-        let mut keys = HeldKeys::default();
-        keys.press(KeyCode::KeyW, Source::Agent);
-        keys.press(KeyCode::KeyW, Source::Keyboard);
-        assert!(!keys.release(&KeyCode::KeyW, Source::Keyboard));
-        assert!(keys.held(Action::Forward));
-        assert!(keys.release_source(Source::Pad).is_empty());
-        assert_eq!(keys.release_source(Source::Agent), vec![KeyCode::KeyW]);
-        assert!(!keys.held(Action::Forward));
-    }
-
-    #[test]
-    fn untagged_inserts_and_removes_act_as_before() {
-        let mut keys = HeldKeys::default();
-        keys.press(KeyCode::ShiftLeft, Source::Pad);
-        assert!(!keys.insert(KeyCode::ShiftLeft), "already held");
-        assert!(!keys.held_by(&KeyCode::ShiftLeft, Source::Keyboard));
-        assert!(
-            keys.remove(&KeyCode::ShiftLeft),
-            "remove lets go for everyone"
-        );
-        assert!(!keys.held(Action::Sneak));
-        assert!(keys.release(&KeyCode::KeyA, Source::Keyboard), "never held");
-    }
-}

crates/horizon-client-input/src/interaction_input.rs

@@ -51,6 +51,11 @@ impl InteractionInput {
     pub fn press(&mut self, button: Button) {
         self.clicks[button as usize] += 1;
     }
+    /// Whether a click waits for the next tick.
+    pub fn has_clicks(&self) -> bool {
+        self.clicks.iter().any(|&c| c > 0)
+    }
+
     pub fn tick(&mut self, world: &mut impl InteractionWorld, attack_down: bool, use_down: bool) {
         let [attack, use_item, pick] = std::mem::take(&mut self.clicks);
         world.pick_hit_result();

crates/horizon-client-input/src/keybinds.rs

@@ -74,17 +74,6 @@ pub const MAPPINGS: &[(&str, &str, &str)] = &[
     ("key.debug.lightmapTexture", "key.keyboard.4", "debug"),
     ("key.debug.improvedTransparency", "key.keyboard.x", "debug"),
 ];
-/// Horizon's own key mappings: bound in Controls like the vanilla ones, but kept in
-/// `horizon-extras.txt` (`emoteKey`), never in `options.txt`, which stays exactly vanilla's
-/// (`MAPPINGS` is what the options parity harness compares with the pinned client).
-pub const HORIZON_MAPPINGS: &[(&str, &str, &str)] = &[
-    // The emote wheel (docs/cosmetics.md), on a key vanilla leaves free.
-    ("key.emote", "key.keyboard.b", "multiplayer"),
-];
-/// Every mapping the game binds: vanilla's in `Options.keyMappings` order, then Horizon's.
-pub fn all_mappings() -> impl Iterator<Item = &'static (&'static str, &'static str, &'static str)> {
-    MAPPINGS.iter().chain(HORIZON_MAPPINGS)
-}
 /// Mappings Options builds as `ToggleKeyMapping` (hold or toggle by option).
 pub fn is_toggle(name: &str) -> bool {
     matches!(name, "key.sneak" | "key.sprint" | "key.use" | "key.attack")
@@ -323,7 +312,8 @@ pub struct KeyBinds {
 impl Default for KeyBinds {
     fn default() -> Self {
         Self {
-            keys: all_mappings()
+            keys: MAPPINGS
+                .iter()
                 .map(|(n, d, _)| (*n, (*d).to_owned()))
                 .collect(),
         }
@@ -349,7 +339,8 @@ impl KeyBinds {
             .map_or("key.keyboard.unknown", String::as_str)
     }
     pub fn default_of(name: &str) -> &'static str {
-        all_mappings()
+        MAPPINGS
+            .iter()
             .find(|m| m.0 == name)
             .map_or("key.keyboard.unknown", |m| m.1)
     }
@@ -357,24 +348,16 @@ impl KeyBinds {
         self.get(name) == Self::default_of(name)
     }
     pub fn set(&mut self, name: &str, key: &str) {
-        if let Some((n, _, _)) = all_mappings().find(|m| m.0 == name) {
+        if let Some((n, _, _)) = MAPPINGS.iter().find(|m| m.0 == name) {
             self.keys.insert(n, key.to_owned());
         }
     }
-    /// The bindings `options.txt` holds: vanilla's mappings only.
     pub fn saved(&self) -> Vec<(&'static str, String)> {
         MAPPINGS
             .iter()
             .map(|(n, _, _)| (*n, self.get(n).to_owned()))
             .collect()
     }
-    /// Horizon's own bindings, for `horizon-extras.txt`.
-    pub fn horizon_saved(&self) -> Vec<(&'static str, String)> {
-        HORIZON_MAPPINGS
-            .iter()
-            .map(|(n, _, _)| (*n, self.get(n).to_owned()))
-            .collect()
-    }
     pub fn reset_all(&mut self) {
         *self = Self::default();
     }
@@ -384,7 +367,8 @@ impl KeyBinds {
         if key == "key.keyboard.unknown" {
             return Vec::new();
         }
-        all_mappings()
+        MAPPINGS
+            .iter()
             .filter(|(n, _, _)| {
                 *n != name && self.get(n) == key && (!self.is_default(n) || !self.is_default(name))
             })
@@ -398,7 +382,8 @@ impl KeyBinds {
     /// Every mapping a physical input triggers, in list order: like
     /// `KeyMapping.set`/`click`, one key drives all the mappings bound to it.
     pub fn mappings_for<'a>(&'a self, key: &'a str) -> impl Iterator<Item = &'static str> + 'a {
-        all_mappings()
+        MAPPINGS
+            .iter()
             .map(|m| m.0)
             .filter(move |n| self.get(n) == key)
     }
@@ -408,7 +393,8 @@ impl KeyBinds {
     /// key and the binding itself); their defaults (A, S, D, T, L, 1 to 4...)
     /// would otherwise turn the key back into its old gameplay meaning.
     fn translated_mappings<'a>(&'a self, key: &'a str) -> impl Iterator<Item = &'static str> + 'a {
-        all_mappings()
+        MAPPINGS
+            .iter()
             .filter(|m| m.2 != "debug")
             .map(|m| m.0)
             .filter(move |n| self.get(n) == key)
@@ -416,7 +402,9 @@ impl KeyBinds {
     /// Whether a mapping (other than a debug key) whose default is `key` was
     /// bound elsewhere.
     fn default_moved(&self, key: &str) -> bool {
-        all_mappings().any(|(n, d, c)| *d == key && *c != "debug" && !self.is_default(n))
+        MAPPINGS
+            .iter()
+            .any(|(n, d, c)| *d == key && *c != "debug" && !self.is_default(n))
     }
     /// Translate a physical key into the default key of the mapping it is
     /// bound to, so game code written against vanilla defaults follows the
@@ -452,18 +440,6 @@ impl KeyBinds {
         }
         vec![Ok(key)]
     }
-    /// `Minecraft.handleKeybinds`: key.pickItem and key.spectatorHotbar share the middle button by
-    /// default and are separate mappings, so a press of what `input` is bound to acts only as the
-    /// one this player can use: the spectator hotbar for a spectator, pick block otherwise. (Pick
-    /// block does nothing a spectator would see.)
-    pub fn middle_acts(&self, input: &str, spectator: bool) -> bool {
-        let mapping = if spectator {
-            "key.spectatorHotbar"
-        } else {
-            "key.pickItem"
-        };
-        self.get(mapping) == input
-    }
     /// Translate a mouse button the same way (keys bound to mouse buttons).
     pub fn translate_mouse(&self, button: MouseButton) -> Option<Result<KeyCode, MouseButton>> {
         self.translate_mouse_all(button).into_iter().next()
@@ -527,27 +503,6 @@ impl KeyBinds {
 #[cfg(test)]
 mod tests {
     use super::*;
-
-    #[test]
-    fn mappings_sharing_the_middle_button_act_as_themselves() {
-        let middle = "key.mouse.middle";
-        let z = "key.keyboard.z";
-        let mut keys = KeyBinds::default();
-        assert!(keys.middle_acts(middle, false) && keys.middle_acts(middle, true));
-        // The spectator hotbar on Z: the middle button only picks, and Z never picks.
-        keys.set("key.spectatorHotbar", z);
-        assert!(keys.middle_acts(middle, false));
-        assert!(!keys.middle_acts(middle, true));
-        assert!(keys.middle_acts(z, true));
-        assert!(!keys.middle_acts(z, false));
-        // Pick block on Z instead: the other way round.
-        keys.reset_all();
-        keys.set("key.pickItem", z);
-        assert!(keys.middle_acts(z, false));
-        assert!(!keys.middle_acts(z, true));
-        assert!(keys.middle_acts(middle, true));
-        assert!(!keys.middle_acts(middle, false));
-    }
     #[test]
     fn container_mouse_hotkeys_follow_slot_bindings_and_pick_item_priority() {
         for button in [MouseButton::Back, MouseButton::Forward, MouseButton::Middle] {

crates/horizon-client-input/src/lib.rs

@@ -3,10 +3,8 @@
 //! options. horizon-client re-exports each module under its old path
 //! (`horizon_client::keybinds`, ...).
 #![forbid(unsafe_code)]
-pub mod actions;
 pub mod clipboard;
 pub mod gamepad;
-pub mod held;
 pub mod input;
 pub mod interaction_input;
 pub mod key_names;
@@ -14,5 +12,4 @@ pub mod keybinds;
 pub mod keymapping;
 pub mod modifiers;
 pub mod mouse;
-pub mod snap;
 pub mod window;

crates/horizon-client-input/src/snap.rs

@@ -1,202 +0,0 @@
-//! Where the controller's menu cursor settles once the stick is let go, and
-//! how it gets there. Every rule's number lives in [`Tuning`], so the feel can
-//! be adjusted in one place.
-
-/// The snapping engine's knobs, in GUI pixels and seconds.
-#[derive(Clone, Copy, Debug, PartialEq)]
-pub struct Tuning {
-    /// A let-go cursor settles on a target this close to it.
-    pub radius: f32,
-    /// How long the glide onto a target takes.
-    pub glide_seconds: f32,
-    /// Movement shorter than this is a wobble: the cursor stays where it was.
-    pub min_travel: f32,
-    /// A flick that ends still nearest its starting target commits to the
-    /// neighbour it was heading for once it covered this fraction of the way.
-    pub commit: f32,
-    /// How far off the flick's direction a neighbour may lie (cosine of the
-    /// angle: 0.7 is about 45 degrees).
-    pub cone: f32,
-    /// The pointer's speed over a slot or control, as a fraction of its
-    /// speed elsewhere (1 leaves it unchanged).
-    pub over_target_speed: f32,
-}
-
-pub const TUNING: Tuning = Tuning {
-    radius: 16.0,
-    glide_seconds: 0.025,
-    min_travel: 1.5,
-    commit: 0.15,
-    cone: 0.7,
-    over_target_speed: 1.0,
-};
-
-type Point = (f32, f32);
-
-fn distance(a: Point, b: Point) -> f32 {
-    ((a.0 - b.0).powi(2) + (a.1 - b.1).powi(2)).sqrt()
-}
-
-/// The target nearest `at`, if one lies within `radius`.
-pub fn nearest(at: Point, targets: &[Point], radius: f32) -> Option<usize> {
-    targets
-        .iter()
-        .enumerate()
-        .map(|(i, t)| (i, distance(at, *t)))
-        .filter(|(_, d)| *d <= radius)
-        .min_by(|a, b| a.1.total_cmp(&b.1))
-        .map(|(i, _)| i)
-}
-
-/// Where a stick movement from `start` to `end` settles among `targets`
-/// (their centres), or `None` to leave the cursor where it is.
-pub fn settle(start: Point, end: Point, targets: &[Point], tuning: &Tuning) -> Option<usize> {
-    let near = nearest(end, targets, tuning.radius);
-    let travel = (end.0 - start.0, end.1 - start.1);
-    let length = distance(start, end);
-    if length < tuning.min_travel {
-        return near;
-    }
-    let origin = nearest(start, targets, tuning.radius);
-    if near != origin {
-        return near;
-    }
-    // Still nearest where it started: a quick flick toward a neighbour.
-    let Some(o) = origin else {
-        return near;
-    };
-    let from = targets[o];
-    let heading = (travel.0 / length, travel.1 / length);
-    let next = targets
-        .iter()
-        .enumerate()
-        .filter(|(i, _)| *i != o)
-        .filter_map(|(i, t)| {
-            let to = (t.0 - from.0, t.1 - from.1);
-            let gap = distance(from, *t);
-            let aligned = (to.0 * heading.0 + to.1 * heading.1) / gap;
-            (gap > 0.0 && aligned >= tuning.cone).then_some((i, gap, to))
-        })
-        .min_by(|a, b| a.1.total_cmp(&b.1));
-    match next {
-        Some((i, gap, to)) => {
-            let progress = ((end.0 - from.0) * to.0 + (end.1 - from.1) * to.1) / (gap * gap);
-            if progress >= tuning.commit {
-                Some(i)
-            } else {
-                near
-            }
-        }
-        None => near,
-    }
-}
-
-/// Where a cursor left on a target goes once the targets moved: with most of
-/// them if they moved together (a recipe book opened), else to the nearest
-/// one (a creative tab with other slots), so it never rests between targets.
-/// `None` when it wasn't on a target, or one is still there.
-pub fn follow(at: Point, before: &[Point], after: &[Point]) -> Option<usize> {
-    const SAME: f32 = 0.5;
-    let on = before.iter().find(|t| distance(at, **t) <= SAME)?;
-    if after.iter().any(|t| distance(at, *t) <= SAME) {
-        return None;
-    }
-    let carried = |by: Point| {
-        before
-            .iter()
-            .filter(|b| {
-                let moved = (b.0 + by.0, b.1 + by.1);
-                after.iter().any(|a| distance(moved, *a) <= SAME)
-            })
-            .count()
-    };
-    let together = after
-        .iter()
-        .enumerate()
-        .map(|(i, a)| (i, carried((a.0 - on.0, a.1 - on.1))))
-        .max_by_key(|&(_, count)| count)
-        .filter(|&(_, count)| count * 2 > before.len());
-    together
-        .map(|(i, _)| i)
-        .or_else(|| nearest(at, after, f32::INFINITY))
-}
-
-/// The cursor `seconds` into a glide from `from` to `to`: eased out, so it
-/// slows as it lands, and exactly `to` once the glide is over.
-pub fn glide(from: Point, to: Point, seconds: f32, tuning: &Tuning) -> Point {
-    let t = (seconds / tuning.glide_seconds).clamp(0.0, 1.0);
-    let eased = 1.0 - (1.0 - t).powi(3);
-    (
-        from.0 + (to.0 - from.0) * eased,
-        from.1 + (to.1 - from.1) * eased,
-    )
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    /// A row of inventory slots, 18 pixels apart, and the slot below the first.
-    const SLOTS: [Point; 4] = [(8.0, 8.0), (26.0, 8.0), (44.0, 8.0), (8.0, 26.0)];
-
-    #[test]
-    fn follow_goes_with_targets_that_moved_together() {
-        let moved = SLOTS.map(|s| (s.0 + 77.0, s.1));
-        assert_eq!(follow(SLOTS[1], &SLOTS, &moved), Some(1));
-    }
-
-    #[test]
-    fn follow_takes_the_nearest_of_other_targets() {
-        let other = [(30.0, 50.0), (200.0, 200.0)];
-        assert_eq!(follow(SLOTS[1], &SLOTS, &other), Some(0));
-    }
-
-    #[test]
-    fn follow_leaves_a_free_cursor_and_a_target_still_there() {
-        let other = [(30.0, 50.0)];
-        assert_eq!(follow((100.0, 100.0), &SLOTS, &other), None);
-        assert_eq!(follow(SLOTS[0], &SLOTS, &SLOTS), None);
-        assert_eq!(follow(SLOTS[0], &SLOTS, &[]), None);
-    }
-
-    #[test]
-    fn a_short_flick_moves_to_the_neighbour_it_heads_for() {
-        // 4 pixels right of slot 0: still nearest slot 0, but heading for slot 1.
-        assert_eq!(settle((8.0, 8.0), (12.0, 8.0), &SLOTS, &TUNING), Some(1));
-        assert_eq!(settle((8.0, 8.0), (8.0, 12.0), &SLOTS, &TUNING), Some(3));
-        assert_eq!(settle((26.0, 8.0), (22.0, 8.0), &SLOTS, &TUNING), Some(0));
-    }
-
-    #[test]
-    fn a_wobble_stays_put() {
-        assert_eq!(settle((8.0, 8.0), (8.5, 8.4), &SLOTS, &TUNING), Some(0));
-        // Barely started toward the neighbour: not committed.
-        assert_eq!(settle((8.0, 8.0), (9.6, 8.0), &SLOTS, &TUNING), Some(0));
-    }
-
-    #[test]
-    fn a_long_move_settles_on_the_nearest_target() {
-        assert_eq!(settle((8.0, 8.0), (42.0, 9.0), &SLOTS, &TUNING), Some(2));
-        // Far from everything: left where it is.
-        assert_eq!(settle((8.0, 8.0), (200.0, 200.0), &SLOTS, &TUNING), None);
-    }
-
-    #[test]
-    fn a_flick_off_any_row_does_not_jump_sideways() {
-        // Up from slot 0: nothing lies that way, so it stays on slot 0.
-        assert_eq!(settle((8.0, 8.0), (8.0, 4.0), &SLOTS, &TUNING), Some(0));
-    }
-
-    #[test]
-    fn the_glide_eases_onto_its_target_and_stops_there() {
-        let (from, to) = ((0.0, 0.0), (20.0, -10.0));
-        assert_eq!(glide(from, to, 0.0, &TUNING), from);
-        let half = glide(from, to, TUNING.glide_seconds / 2.0, &TUNING);
-        assert!(
-            half.0 > 10.0 && half.0 < 20.0,
-            "eased out: past halfway at half time"
-        );
-        assert_eq!(glide(from, to, TUNING.glide_seconds, &TUNING), to);
-        assert_eq!(glide(from, to, 1.0, &TUNING), to);
-    }
-}

crates/horizon-client-lib/Cargo.toml

@@ -18,8 +18,6 @@ horizon-client-core = { path = "../horizon-client-core" }
 horizon-client-input = { path = "../horizon-client-input" }
 horizon-client-render = { path = "../horizon-client-render" }
 horizon-command = { path = "../horizon-command" }
-# Emotes pose the player model (`Mob::emote`, `mobs::anim::setup`).
-horizon-cosmetics = { path = "../horizon-cosmetics" }
 horizon-items = { path = "../horizon-items" }
 horizon-core = { path = "../horizon-core" }
 # `horizon-ctl mcp`: the Model Context Protocol, shared with the launcher and the server.
@@ -32,8 +30,6 @@ horizon-world = { path = "../horizon-world" }
 horizon-protocol = { path = "../horizon-protocol" }
 # server.properties, eula.txt and the user lists, shared with horizon-server.
 horizon-server-files = { path = "../horizon-server-files" }
-# The control endpoint's token (control.rs), as horizon-server's and the relay's.
-getrandom = "0.3"
 # The dedicated server's anticheat, off unless server.toml's [anticheat] turns it on (docs/anticheat.md).
 horizon-anticheat = { path = "../horizon-anticheat" }
 # The dedicated server's chat filter: [chat_filter], the slur list, mutes (docs/chat-filter.md).
@@ -67,10 +63,6 @@ ab_glyph = "0.2.32"
 log = "0.4"
 chrono = { version = "0.4.42", default-features = false, features = ["clock", "std"] }
 flate2 = { version = "1.1.10", default-features = false, features = ["zlib-rs", "runtime_detection"] }
-# The network threads of a server's players: epoll, kqueue or Windows' AFD (lan/io_pool.rs).
-mio = { version = "1.2.4", features = ["os-poll", "net"] }
-# Shared chunk frames are found by one keyed 128-bit hash of their body (lan/conn.rs SharedFrames).
-xxhash-rust = { version = "0.8.19", features = ["xxh3"] }
 horizon-theme = { path = "../horizon-theme" }
 # Opt-in data collection: the game keeps, the launcher sends (docs/telemetry.md); `live` is
 # the anonymous "I'm playing" ping the game sends itself (`heartbeat.rs`).

crates/horizon-client-render/examples/entity_shadow_ownership.rs

@@ -64,11 +64,10 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
         None,
         GraphicsApi::Vulkan,
         false,
-        false,
         true,
     ))?;
     assert!(!renderer.pack_entity_shadows(), "no selected pack");
-    renderer.set_shader_pack(0, None, &[]).unwrap();
+    renderer.set_shader_pack(0, None, &[]);
     assert!(
         !renderer.pack_entity_shadows(),
         "selected pack without a compiled post"
@@ -165,7 +164,6 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
             }
             let (_, notes) = renderer
                 .set_shader_pack(dimension, Some(post), &[])
-                .unwrap()
                 .unwrap();
             if break_pipeline {
                 assert!(

crates/horizon-client-render/examples/scene_replay.rs

@@ -1,831 +0,0 @@
-//! Draws a scene `horizon-ctl render-capture DIR` wrote, offscreen, from its camera, with the
-//! real `Renderer`, and prints GPU and CPU milliseconds per frame and Horizon's own passes'
-//! GPU times as JSON (docs/graphics.md, "Render capture and replay").
-//! `cargo run --release -p horizon-client-render --example scene_replay -- DIR [--frames 300]
-//! [--warmup 60] [--yaw-offsets 0,90,180,270] [--texture-filtering 0|1|2] [--anisotropy-bit N]
-//! [--mipmaps N] [--lod-distance CHUNKS] [--render-distance CHUNKS] [--size WxH]
-//! [--section-draws flat|indirect] [--section-cull on|off] [--section-sides on|off]
-//! [--gpu-culling on|off] [--root RESOURCES] [--screenshot PNG]
-//! [--world SAVE --leaf-culling MODE] [--memory on]`
-//! `--screenshot` saves the first view's last frame, after the timed frames.
-//! `--world` meshes the captured sections again from that save's region files
-//! (blocks, biomes and saved light; `ao`, `biomeBlendRadius` and `cutoutLeaves`
-//! from `./options.txt`) with `--leaf-culling` (default `off`), so a mesher
-//! change can be measured on the captured view. A section whose 3x3 columns are
-//! not all saved keeps its captured mesh.
-//! `--memory on` adds the renderer's largest GPU resources and, on macOS, the process's
-//! physical footprint by category (`footprint`), taken after the timed frames.
-use horizon_client_render::{
-    assets::{Assets, RenderAssets},
-    biome::Biomes,
-    blocks::BlockFacts,
-    chunk::{BIOME_STRATEGY, Chunk, ColumnLayout, Light, block_strategy},
-    fast_hash::{FxHashMap, FxHashSet},
-    gfx::{
-        PreparedTextures, Renderer, ScreenshotRequest,
-        capture::{self, AtlasCheck, Scene},
-        panorama::Faces,
-    },
-    graphics::LeafCullingMode,
-    hud::HudBatch,
-    lod::TileKey,
-    mesher::{MeshScratch, MeshTables, Mesher, SectionMesh, packed},
-    models,
-};
-use horizon_core::{
-    biome::{BiomeZoom, obfuscate_seed},
-    paletted::PalettedContainer,
-};
-use horizon_world::{
-    chunk::BlockState,
-    nbt::{Limits, NamedTag, Tag},
-    region::RegionFile,
-    registry::BlockRegistry,
-};
-use serde_json::{Value, json};
-use std::{
-    path::{Path, PathBuf},
-    sync::{
-        Arc,
-        atomic::{AtomicUsize, Ordering},
-    },
-    time::{Duration, Instant},
-};
-use winit::{
-    application::ApplicationHandler,
-    event::WindowEvent,
-    event_loop::{ActiveEventLoop, EventLoop},
-    window::{Window, WindowId},
-};
-
-// The game's allocator, so that `--memory`'s footprint is the game's: the system heap kept
-// gigabytes of the meshes `--world` frees dirty.
-#[global_allocator]
-static ALLOCATOR: horizon_threads::Allocator = horizon_threads::ALLOCATOR;
-
-#[derive(Default)]
-struct Options {
-    dir: PathBuf,
-    frames: usize,
-    warmup: usize,
-    yaw_offsets: Vec<f32>,
-    root: Option<PathBuf>,
-    texture_filtering: Option<i32>,
-    anisotropy_bit: Option<i32>,
-    mipmaps: Option<u32>,
-    lod_distance: Option<u32>,
-    render_distance: Option<i32>,
-    size: Option<[u32; 2]>,
-    flat: Option<bool>,
-    cull: Option<bool>,
-    sides: Option<bool>,
-    gpu_culling: Option<bool>,
-    screenshot: Option<PathBuf>,
-    world: Option<PathBuf>,
-    leaf_culling: LeafCullingMode,
-    memory: bool,
-}
-
-fn on_off(value: &str) -> Result<bool, String> {
-    match value {
-        "on" | "flat" => Ok(true),
-        "off" | "indirect" => Ok(false),
-        other => Err(format!("expected on or off, got {other}")),
-    }
-}
-
-fn options() -> Result<Options, String> {
-    let mut o = Options {
-        frames: 300,
-        warmup: 60,
-        yaw_offsets: vec![0.0],
-        ..Default::default()
-    };
-    let mut args = std::env::args().skip(1);
-    let mut dir = None;
-    while let Some(arg) = args.next() {
-        if !arg.starts_with("--") {
-            dir = Some(PathBuf::from(arg));
-            continue;
-        }
-        let value = args.next().ok_or(format!("{arg} needs a value"))?;
-        let number = |v: &str| v.parse::<i64>().map_err(|e| format!("{arg}: {e}"));
-        match arg.as_str() {
-            "--frames" => o.frames = number(&value)?.max(1) as usize,
-            "--warmup" => o.warmup = number(&value)?.max(0) as usize,
-            "--yaw-offsets" => {
-                o.yaw_offsets = value
-                    .split(',')
-                    .map(|v| v.trim().parse::<f32>().map_err(|e| format!("{arg}: {e}")))
-                    .collect::<Result<_, _>>()?
-            }
-            "--root" => o.root = Some(value.into()),
-            "--texture-filtering" => o.texture_filtering = Some(number(&value)? as i32),
-            "--anisotropy-bit" => o.anisotropy_bit = Some(number(&value)? as i32),
-            "--mipmaps" => o.mipmaps = Some(number(&value)?.max(0) as u32),
-            "--lod-distance" => o.lod_distance = Some(number(&value)?.max(0) as u32),
-            "--render-distance" => o.render_distance = Some(number(&value)?.max(0) as i32),
-            "--size" => {
-                let (w, h) = value.split_once('x').ok_or("--size takes WxH")?;
-                o.size = Some([number(w)? as u32, number(h)? as u32]);
-            }
-            "--section-draws" => o.flat = Some(on_off(&value)?),
-            "--section-cull" => o.cull = Some(on_off(&value)?),
-            "--section-sides" => o.sides = Some(on_off(&value)?),
-            "--gpu-culling" => o.gpu_culling = Some(on_off(&value)?),
-            "--screenshot" => o.screenshot = Some(value.into()),
-            "--world" => o.world = Some(value.into()),
-            "--memory" => o.memory = on_off(&value)?,
-            "--leaf-culling" => {
-                o.leaf_culling = LeafCullingMode::ALL
-                    .into_iter()
-                    .find(|mode| mode.name() == value)
-                    .ok_or(format!("no leaf culling mode {value}"))?;
-            }
-            other => return Err(format!("unknown option {other}")),
-        }
-    }
-    o.dir = dir.ok_or("the capture directory is required")?;
-    Ok(o)
-}
-
-/// Milliseconds: average, median, 95th percentile and slowest, over `samples`.
-fn summary(samples: &[f32]) -> Value {
-    if samples.is_empty() {
-        return Value::Null;
-    }
-    let mut sorted = samples.to_vec();
-    sorted.sort_by(f32::total_cmp);
-    let at = |q: f32| sorted[((sorted.len() - 1) as f32 * q).round() as usize];
-    json!({
-        "avg": samples.iter().sum::<f32>() / samples.len() as f32,
-        "min": sorted[0],
-        "p10": at(0.1),
-        "p50": at(0.5),
-        "p95": at(0.95),
-        "max": sorted[sorted.len() - 1],
-        "samples": samples.len(),
-    })
-}
-
-fn ms(d: Duration) -> f32 {
-    d.as_secs_f32() * 1000.0
-}
-
-fn replay(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
-    let o = options()?;
-    let scene = Scene::read(&o.dir)?;
-    let settings = &scene.settings;
-    let root = o.root.clone().unwrap_or_else(|| settings.resources.clone());
-    let loading = Instant::now();
-    let assets = Assets::load(&root)?;
-    let render = assets.reload(&root)?;
-    if AtlasCheck::of(&render) != settings.atlas {
-        return Err(format!(
-            "the block sprites at {} are not the ones the capture was made with (resource packs \
-             or mods?): pass --root with the game's resource root",
-            root.display()
-        )
-        .into());
-    }
-    let one = [255u8; 4];
-    let zero = [0u8; 4];
-    let pixels = render.pixels.get();
-    let prepared = PreparedTextures::new(
-        &pixels,
-        render.sprite_size,
-        render.texture_layers,
-        &render.sprite_mips,
-        (&zero[..], 1),
-    )
-    .with_pbr(
-        &render.pbr_normals,
-        &render.pbr_specular,
-        render.pbr_size,
-        render.texture_layers,
-    );
-    let mut renderer = pollster::block_on(Renderer::new(
-        window,
-        true,
-        &pixels,
-        render.sprite_size,
-        render.sprite_minimum_size,
-        render.texture_layers,
-        &render.sprite_mips,
-        &render.animations,
-        (&one[..], 1, 1),
-        (&zero[..], 1, 1),
-        (&zero[..], 1, 1),
-        (&zero[..], 1),
-        Arc::new(Faces::colour([0, 0, 0, 255])),
-        Some(prepared),
-        None,
-        settings.graphics_api(),
-        settings.translucent_batching,
-        false,
-        false,
-    ))?;
-    drop(pixels);
-    render.pixels.pack();
-    let state = &scene.renderer;
-    let [width, height] = o.size.unwrap_or(state.size);
-    renderer.resize(width, height);
-    renderer.gamma = state.gamma;
-    renderer.fullbright = state.fullbright;
-    renderer.improved_transparency = state.improved_transparency;
-    renderer.animated_textures = state.animated_textures;
-    let filtering = o.texture_filtering.unwrap_or(settings.texture_filtering);
-    let anisotropy = o.anisotropy_bit.unwrap_or(settings.anisotropy_bit);
-    renderer.set_texture_filtering(filtering, anisotropy);
-    renderer.set_mipmap_levels(o.mipmaps.unwrap_or(settings.mipmap_levels));
-    renderer.set_world_post(
-        settings.resolution_scale,
-        settings.fxaa,
-        settings.taa,
-        settings.upscale,
-    );
-    let mut notes = Vec::new();
-    let mut note = |what: &str, result: horizon_client_render::Result<()>| {
-        if let Err(e) = result {
-            notes.push(format!("{what}: {e}"));
-        }
-    };
-    note(
-        "section-draws",
-        renderer.set_flat_draws(o.flat.unwrap_or(state.flat_draws)),
-    );
-    note(
-        "section-cull",
-        renderer.set_section_cull(o.cull.unwrap_or(state.section_cull)),
-    );
-    note(
-        "gpu-culling",
-        renderer.set_gpu_culling(o.gpu_culling.unwrap_or(state.gpu_culling)),
-    );
-    renderer.set_section_sides(o.sides.unwrap_or(state.section_sides));
-    renderer.set_pass_timing(true);
-    let layout = ColumnLayout::of_level(state.min_y, state.sections as i32 * 16);
-    if layout != ColumnLayout::VANILLA {
-        renderer.clear_sections(layout);
-    }
-
-    // Near sections first: with no far tile resident yet, none fades in.
-    let camera = scene.frame.camera;
-    let column = |x: f64| (x.floor() as i32) >> 4;
-    let (cx, cz) = (column(camera[0]), column(camera[2]));
-    let near = |x: i32, z: i32| {
-        o.render_distance
-            .is_none_or(|r| (x - cx).pow(2) + (z - cz).pow(2) <= r * r)
-    };
-    let (mut remeshed, mut world_report) = (FxHashMap::default(), Value::Null);
-    if let Some(world) = &o.world {
-        let keys: Vec<[i32; 3]> = section_keys(&o.dir)?
-            .into_iter()
-            .filter(|&[x, _, z]| near(x, z))
-            .collect();
-        let started = Instant::now();
-        remeshed = remesh(world, &root, &assets, &render, o.leaf_culling, &keys)?;
-        world_report = json!({
-            "save": world.display().to_string(),
-            "leaf_culling": o.leaf_culling.name(),
-            "remeshed": remeshed.len(),
-            "kept": keys.len() - remeshed.len(),
-            "remesh_ms": ms(started.elapsed()),
-        });
-    }
-    let leaf_layers = leaf_layers(&render);
-    let (mut sections, mut quads, mut leaf_quads) = (0, 0usize, 0usize);
-    let mut packed_quads = 0usize;
-    capture::read_meshes(&o.dir, "sections", |[x, y, z], captured| {
-        if near(x, z) {
-            let mesh = remeshed.remove(&[x, y, z]).unwrap_or(captured);
-            quads += mesh.solid.len() / 4;
-            packed_quads += packed::packed_quads(&mesh.packed, mesh.solid.len() / 4);
-            leaf_quads += mesh
-                .solid
-                .iter()
-                .filter(|v| leaf_layers.contains(&v.layer))
-                .count()
-                / 4;
-            renderer.upload((x, y, z), &mesh);
-            sections += 1;
-        }
-    })?;
-    let mut tiles: Vec<(TileKey, SectionMesh)> = Vec::new();
-    capture::read_meshes(&o.dir, "tiles", |[x, z, level], mesh| {
-        let key = TileKey {
-            x,
-            z,
-            level: level as u8,
-        };
-        let [ox, _, oz] = key.origin();
-        let half = f64::from(key.size()) / 2.0;
-        let (dx, dz) = (
-            f64::from(ox) + half - camera[0],
-            f64::from(oz) + half - camera[2],
-        );
-        let near = o
-            .lod_distance
-            .is_none_or(|d| (dx * dx + dz * dz).sqrt() <= f64::from(d) * 16.0);
-        if near {
-            tiles.push((key, mesh));
-        }
-    })?;
-    let tile_count = tiles.len();
-    if !tiles.is_empty() {
-        let cutout: FxHashSet<(i32, i32)> = scene.lod_cutout.iter().copied().collect();
-        renderer.queue_lods(tiles, Vec::new(), Some(cutout));
-        renderer.upload_lods(Duration::from_secs(3600));
-    }
-    let loaded_ms = ms(loading.elapsed());
-
-    let hud = HudBatch::new([width, height]);
-    let mut views = Vec::new();
-    for &offset in &o.yaw_offsets {
-        let mut frame = scene.frame(&hud);
-        frame.yaw += offset;
-        frame.eye_rotation[0] += offset;
-        if let Some(r) = o.render_distance {
-            frame.distance = (r * 16) as f32;
-            frame.detail_distance = frame.distance;
-        }
-        let draw = |renderer: &mut Renderer| -> horizon_client_render::Result<Duration> {
-            if frame.cave_culling {
-                renderer.start_occlusion(frame.camera, frame.distance);
-            }
-            let started = Instant::now();
-            renderer.render(&frame)?;
-            Ok(started.elapsed())
-        };
-        for _ in 0..o.warmup {
-            draw(&mut renderer)?;
-        }
-        renderer.gpu_times.clear();
-        let (mut call, mut encode, mut gpu) = (Vec::new(), Vec::new(), Vec::new());
-        for _ in 0..o.frames {
-            call.push(ms(draw(&mut renderer)?));
-            encode.push(ms(renderer.last_encode));
-            gpu.append(&mut renderer.gpu_times);
-        }
-        // Timestamps arrive a few frames late: a few more of the same frame bring them in.
-        for _ in 0..16 {
-            if gpu.len() >= o.frames {
-                break;
-            }
-            draw(&mut renderer)?;
-            gpu.append(&mut renderer.gpu_times);
-        }
-        gpu.truncate(o.frames);
-        if let Some(path) = o.screenshot.as_ref().filter(|_| views.is_empty()) {
-            renderer.screenshot_result = None;
-            renderer.screenshot = Some(ScreenshotRequest {
-                path: path.clone(),
-                size: None,
-                scaled: false,
-            });
-            for _ in 0..32 {
-                draw(&mut renderer)?;
-                if renderer.screenshot_result.is_some() {
-                    break;
-                }
-            }
-            match renderer.screenshot_result.take() {
-                Some(Ok(_)) => {}
-                Some(Err(e)) => notes.push(format!("screenshot: {e}")),
-                None => notes.push("screenshot: not saved".into()),
-            }
-        }
-        views.push(json!({
-            "yaw_offset": offset,
-            "gpu_ms": summary(&gpu),
-            "render_call_ms": summary(&call),
-            "cpu_encode_ms": summary(&encode),
-            "gpu_passes_median_ms": renderer
-                .own_pass_times()
-                .into_iter()
-                .map(|(name, ms)| (name, json!(ms)))
-                .collect::<serde_json::Map<_, _>>(),
-            "drawn_sections": renderer.drawn_sections,
-            "section_draws": renderer.section_draws,
-            "section_draw_calls": renderer.section_draw_calls,
-            // Occlusion culling's last result: boxes hidden, boxes tested, share of solid
-            // indices hidden.
-            "culled": renderer.culled_sections(),
-        }));
-    }
-    let section_draws = if renderer.flat_draws() {
-        "flat"
-    } else {
-        "indirect"
-    };
-    let memory = o.memory.then(|| memory_report(&renderer));
-    let report = json!({
-        "capture": o.dir.display().to_string(),
-        "adapter": renderer.info.name,
-        "captured_on": state.adapter,
-        "size": [width, height],
-        "sections": sections,
-        "solid_quads": quads,
-        "leaf_quads": leaf_quads,
-        // Solid quads uploaded as one record each (`mesher::packed`).
-        "packed_quads": packed_quads,
-        "world": world_report,
-        "tiles": tile_count,
-        "load_ms": loaded_ms,
-        "frames": o.frames,
-        "warmup": o.warmup,
-        "settings": {
-            "texture_filtering": filtering,
-            "anisotropy_bit": anisotropy,
-            "mipmaps": o.mipmaps.unwrap_or(settings.mipmap_levels),
-            "lod_distance": o.lod_distance,
-            "render_distance": o.render_distance,
-            "section_draws": section_draws,
-            "section_cull": renderer.section_cull(),
-            "section_sides": renderer.section_sides(),
-            "gpu_culling": renderer.gpu_culling(),
-            "shader_pack_left_out": state.shader_pack,
-        },
-        "notes": notes,
-        "views": views,
-        "memory": memory,
-    });
-    println!("{}", serde_json::to_string_pretty(&report)?);
-    Ok(())
-}
-
-fn mb(bytes: u64) -> f64 {
-    (bytes as f64 / 1048576.0 * 10.0).round() / 10.0
-}
-
-/// `--memory`: the renderer's census in MiB and, on macOS, `footprint`'s summary of this
-/// process (GPU buffers and textures count as IOAccelerator memory there).
-fn memory_report(renderer: &Renderer) -> Value {
-    let gpu: serde_json::Map<String, Value> = renderer
-        .gpu_census()
-        .into_iter()
-        .map(|(name, bytes)| (format!("{name}_mb"), json!(mb(bytes))))
-        .collect();
-    let footprint = std::process::Command::new("/usr/bin/footprint")
-        .args(["-f", "bytes", "-p", &std::process::id().to_string()])
-        .output()
-        .ok()
-        .map(|out| String::from_utf8_lossy(&out.stdout).into_owned());
-    let footprint = footprint.map(|text| {
-        let mut total = None;
-        let mut categories = Vec::new();
-        for line in text.lines() {
-            if let Some(at) = line.find("Footprint: ") {
-                total = line[at + 11..]
-                    .split_whitespace()
-                    .next()
-                    .and_then(|v| v.parse::<u64>().ok());
-            }
-            // "  <dirty> B  <clean> B  <reclaimable> B  <regions>  <category>"
-            let words: Vec<&str> = line.split_whitespace().collect();
-            if words.len() >= 8
-                && words[1] == "B"
-                && let Ok(dirty) = words[0].parse::<u64>()
-                && dirty >= 1 << 20
-            {
-                categories.push(json!([words[7..].join(" "), mb(dirty)]));
-            }
-        }
-        json!({ "total_mb": total.map(mb), "dirty_by_category_mb": categories })
-    });
-    json!({ "gpu": gpu, "footprint": footprint })
-}
-
-struct App;
-impl ApplicationHandler for App {
-    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
-        let window = Arc::new(
-            event_loop
-                .create_window(Window::default_attributes().with_visible(false))
-                .unwrap(),
-        );
-        if let Err(error) = replay(window) {
-            eprintln!("scene_replay: {error}");
-            std::process::exit(1);
-        }
-        event_loop.exit();
-    }
-    fn window_event(&mut self, _: &ActiveEventLoop, _: WindowId, _: WindowEvent) {}
-}
-
-fn main() {
-    EventLoop::new().unwrap().run_app(&mut App).unwrap();
-}
-
-/// The captured sections' keys, from the index alone.
-fn section_keys(dir: &Path) -> Result<Vec<[i32; 3]>, Box<dyn std::error::Error>> {
-    #[derive(serde::Deserialize)]
-    struct Key {
-        key: [i32; 3],
-    }
-    let records: Vec<Key> = serde_json::from_reader(std::io::BufReader::new(std::fs::File::open(
-        dir.join("sections.json"),
-    )?))?;
-    Ok(records.into_iter().map(|r| r.key).collect())
-}
-
-/// Sprite layers of every leaves block, as terrain vertices carry them (with or
-/// without `OPAQUE_LAYER`).
-fn leaf_layers(render: &RenderAssets) -> FxHashSet<u16> {
-    render
-        .sprite_layers
-        .iter()
-        .filter(|(name, _)| name.ends_with("_leaves"))
-        .flat_map(|(_, &layer)| {
-            [
-                layer as u16,
-                layer as u16 | horizon_client_render::mesher::OPAQUE_LAYER,
-            ]
-        })
-        .collect()
-}
-
-/// `--world`: the sections `keys` meshed again from `save`'s overworld region
-/// files, on every core, as the game's workers mesh them.
-fn remesh(
-    save: &Path,
-    root: &Path,
-    assets: &Assets,
-    render: &RenderAssets,
-    leaf_culling: LeafCullingMode,
-    keys: &[[i32; 3]],
-) -> Result<FxHashMap<[i32; 3], SectionMesh>, Box<dyn std::error::Error>> {
-    let facts = BlockFacts::load(root, assets.registry)?;
-    let visibility = models::load_visibility(root, assets.registry)?;
-    let tables = MeshTables::new(assets, render, &facts, visibility)?;
-    let biomes = Biomes::load(root)?;
-    let seed = world_seed(save).unwrap_or_else(|| {
-        eprintln!(
-            "scene_replay: no seed in {}, biome blending uses 0",
-            save.display()
-        );
-        0
-    });
-    let options = std::fs::read_to_string("options.txt").unwrap_or_default();
-    let option = |key: &str| {
-        options
-            .lines()
-            .find_map(|l| l.strip_prefix(key)?.strip_prefix(':').map(str::to_owned))
-    };
-    let smooth_lighting = option("ao").is_none_or(|v| v == "true");
-    let cutout_leaves = option("cutoutLeaves").is_none_or(|v| v == "true");
-    let blend_radius = option("biomeBlendRadius")
-        .and_then(|v| v.parse().ok())
-        .unwrap_or(2);
-
-    let mut columns: Vec<(i32, i32)> = keys
-        .iter()
-        .flat_map(|&[x, _, z]| {
-            (-1..=1).flat_map(move |dz| (-1..=1).map(move |dx| (x + dx, z + dz)))
-        })
-        .collect();
-    columns.sort_unstable();
-    columns.dedup();
-    let threads = std::thread::available_parallelism().map_or(4, |n| n.get());
-    let region_dir = save.join("dimensions/minecraft/overworld/region");
-    let next = AtomicUsize::new(0);
-    let chunks: FxHashMap<(i32, i32), Chunk> = std::thread::scope(|scope| {
-        let workers: Vec<_> = (0..threads)
-            .map(|_| {
-                scope.spawn(|| {
-                    let mut files: FxHashMap<(i32, i32), Option<RegionFile>> = FxHashMap::default();
-                    let mut out = Vec::new();
-                    loop {
-                        let i = next.fetch_add(1, Ordering::Relaxed);
-                        let Some(&(x, z)) = columns.get(i) else {
-                            break;
-                        };
-                        let file = files.entry((x >> 5, z >> 5)).or_insert_with(|| {
-                            RegionFile::open(region_dir.join(format!(
-                                "r.{}.{}.mca",
-                                x >> 5,
-                                z >> 5
-                            )))
-                            .ok()
-                        });
-                        let root = file
-                            .as_mut()
-                            .and_then(|f| {
-                                f.read(horizon_core::position::ChunkPos::new(x, z))
-                                    .ok()
-                                    .flatten()
-                            })
-                            .and_then(|record| record.nbt(Limits::default()).ok());
-                        if let Some(chunk) =
-                            root.and_then(|root| decode(&root, assets.registry, &biomes))
-                        {
-                            out.push(((x, z), chunk));
-                        }
-                    }
-                    out
-                })
-            })
-            .collect();
-        workers
-            .into_iter()
-            .flat_map(|w| w.join().unwrap())
-            .collect()
-    });
-
-    let meshable: Vec<[i32; 3]> = keys
-        .iter()
-        .copied()
-        .filter(|&[x, _, z]| {
-            (-1..=1).all(|dz| (-1..=1).all(|dx| chunks.contains_key(&(x + dx, z + dz))))
-        })
-        .collect();
-    let next = AtomicUsize::new(0);
-    let meshes = std::thread::scope(|scope| {
-        let workers: Vec<_> = (0..threads)
-            .map(|_| {
-                scope.spawn(|| {
-                    let mut mesher = Mesher {
-                        nether_shading: false,
-                        shader_pack_lighting: false,
-                        separate_ao: false,
-                        shader_pack: false,
-                        assets,
-                        render,
-                        tables: &tables,
-                        biomes: &biomes,
-                        visibility: tables.visibility.clone(),
-                        zoom: BiomeZoom::new(obfuscate_seed(seed)),
-                        blend_radius,
-                        smooth_lighting,
-                        cutout_leaves,
-                        translucent_layers: &[],
-                        leaf_culling,
-                    };
-                    let mut scratch = MeshScratch::default();
-                    let mut out = Vec::new();
-                    loop {
-                        let i = next.fetch_add(1, Ordering::Relaxed);
-                        let Some(&[x, y, z]) = meshable.get(i) else {
-                            break;
-                        };
-                        let region: [[Option<&Chunk>; 3]; 3] = std::array::from_fn(|dz| {
-                            std::array::from_fn(|dx| {
-                                chunks.get(&(x + dx as i32 - 1, z + dz as i32 - 1))
-                            })
-                        });
-                        let mut mesh =
-                            mesher.mesh_reusing(&region, y, SectionMesh::default(), &mut scratch);
-                        mesh.sort_solid();
-                        out.push(([x, y, z], mesh));
-                    }
-                    out
-                })
-            })
-            .collect();
-        workers
-            .into_iter()
-            .flat_map(|w| w.join().unwrap())
-            .collect::<FxHashMap<_, _>>()
-    });
-    Ok(meshes)
-}
-
-/// The world seed: `data/minecraft/world_gen_settings.dat`, or level.dat's
-/// `Data.WorldGenSettings` in older saves.
-fn world_seed(save: &Path) -> Option<i64> {
-    let read = |path: PathBuf| {
-        horizon_world::datafix::files::read_dat(&path)
-            .ok()
-            .flatten()
-    };
-    let seed = |tag: Option<&Tag>| match tag?.get("seed")? {
-        Tag::Long(seed) => Some(*seed),
-        _ => None,
-    };
-    seed(
-        read(save.join("data/minecraft/world_gen_settings.dat"))
-            .as_ref()
-            .and_then(|t| t.get("data")),
-    )
-    .or_else(|| {
-        seed(
-            read(save.join("level.dat"))?
-                .get("Data")?
-                .get("WorldGenSettings"),
-        )
-    })
-}
-
-/// A saved full chunk's blocks, biomes and light, as the client's own save
-/// loader reads them (`save::decode_lit`, in horizon-client).
-fn decode(root: &NamedTag, registry: &BlockRegistry, biomes: &Biomes) -> Option<Chunk> {
-    let tag = &root.tag;
-    let text = |t: Option<&Tag>| match t {
-        Some(Tag::String(s)) => Some(s.to_string_lossy().to_string()),
-        _ => None,
-    };
-    if text(tag.get("Status")).is_some_and(|s| s != "minecraft:full" && s != "full") {
-        return None;
-    }
-    if tag.get("isLightOn") != Some(&Tag::Byte(1)) {
-        return None;
-    }
-    let (Some(Tag::Int(x)), Some(Tag::Int(z))) = (tag.get("xPos"), tag.get("zPos")) else {
-        return None;
-    };
-    let mut chunk = Chunk::with_layout(*x, *z, ColumnLayout::VANILLA);
-    let air = registry.default_state("minecraft:air")?.0;
-    let Some(Tag::List(sections)) = tag.get("sections") else {
-        return Some(chunk);
-    };
-    let longs = |t: Option<&Tag>| match t {
-        Some(Tag::LongArray(data)) => Some(data.iter().map(|&w| w as u64).collect::<Vec<_>>()),
-        _ => None,
-    };
-    let mut layers = vec![(None, None); chunk.sections.len()];
-    for section in sections {
-        let Some(Tag::Byte(y)) = section.get("Y") else {
-            continue;
-        };
-        let Some(si) = chunk.section_index(i32::from(*y) * 16) else {
-            continue;
-        };
-        let target = Arc::make_mut(&mut chunk.sections[si]);
-        if let Some(states) = section.get("block_states")
-            && let Some(Tag::List(palette)) = states.get("palette")
-        {
-            let palette: Vec<u32> = palette
-                .iter()
-                .map(|p| {
-                    BlockState::from_nbt(p)
-                        .ok()
-                        .and_then(|s| {
-                            registry.id(&s).or_else(|| {
-                                let default = registry.default_state(&s.name)?;
-                                let mut full = registry.state(default)?.clone();
-                                for (k, v) in &s.properties {
-                                    if full.properties.contains_key(k) {
-                                        full.properties.insert(k.clone(), v.clone());
-                                    }
-                                }
-                                registry.id(&full).or(Some(default))
-                            })
-                        })
-                        .map_or(air, |id| id.0)
-                })
-                .collect();
-            let data = longs(states.get("data"));
-            if let Ok(blocks) =
-                PalettedContainer::from_packed(block_strategy(), palette, data.as_deref())
-            {
-                target.blocks = blocks;
-            }
-        }
-        if let Some(b) = section.get("biomes")
-            && let Some(Tag::List(palette)) = b.get("palette")
-        {
-            let palette: Vec<u32> = palette
-                .iter()
-                .map(|p| match p {
-                    Tag::String(s) => u32::from(biomes.id(&s.to_string_lossy())),
-                    _ => 0,
-                })
-                .collect();
-            let data = longs(b.get("data"));
-            if let Ok(container) =
-                PalettedContainer::from_packed(BIOME_STRATEGY, palette, data.as_deref())
-            {
-                target.biomes = container;
-            }
-        }
-        let layer = |name: &str| match section.get(name) {
-            Some(Tag::ByteArray(a)) if a.len() == 2048 => Some(a.clone()),
-            _ => None,
-        };
-        layers[si] = (layer("SkyLight"), layer("BlockLight"));
-    }
-    // `save::load_light`: a section without saved sky light takes the light
-    // of the blocks above it, from the top of the column down.
-    let mut above = [15u8; 256];
-    for (si, (sky, block)) in layers.into_iter().enumerate().rev() {
-        let mut data = Box::new([0u8; 4096]);
-        for (i, v) in data.iter_mut().enumerate() {
-            let nibble =
-                |layer: &Option<Vec<u8>>| layer.as_ref().map(|l| l[i >> 1] >> ((i & 1) << 2) & 15);
-            let s = nibble(&sky).unwrap_or(above[i & 255]);
-            let b = nibble(&block).unwrap_or(0);
-            *v = s << 4 | b;
-        }
-        if sky.is_some() {
-            for (i, a) in above.iter_mut().enumerate() {
-                *a = data[i] >> 4;
-            }
-        }
-        let section = Arc::make_mut(&mut chunk.sections[si]);
-        section.light = Light::Full(data);
-        section.compact();
-    }
-    chunk.lit = true;
-    chunk.light_loaded = true;
-    Some(chunk)
-}

crates/horizon-client-render/examples/standard_pack_gpu_entities.rs

@@ -79,10 +79,7 @@ fn pack(renderer: &mut Renderer, folder: &Path, valid: bool) {
     let (properties, _) = horizon_shaders::read_properties(&pack, &mut macros);
     let post = horizon_shaders::load_post(&pack, "", &properties, &macros, &renderer.pack_inputs());
     assert_eq!(post.notes.is_empty(), valid, "{:?}", post.notes);
-    let (_, notes) = renderer
-        .set_shader_pack(0, Some(post), &[])
-        .unwrap()
-        .unwrap();
+    let (_, notes) = renderer.set_shader_pack(0, Some(post), &[]).unwrap();
     assert!(
         !valid || notes.iter().all(|n| !n.contains("skipped")),
         "{notes:?}"
@@ -124,7 +121,6 @@ fn fixture(window: Arc<Window>) -> Result<(), Box<dyn std::error::Error>> {
         None,
         GraphicsApi::Vulkan,
         false,
-        false,
         true,
     ))?;
     renderer.resize(320, 180);
@@ -355,7 +351,6 @@ fn fixture_frame(hud: &HudBatch) -> Frame<'_> {
         outline: Vec::new(),
         outline_after_terrain: false,
         outline_high_contrast: false,
-        pvp: Default::default(),
         debug_lines: &[],
         debug_lines_on_top: &[],
         debug_crosshair: &[],
@@ -378,12 +373,10 @@ fn fixture_frame(hud: &HudBatch) -> Frame<'_> {
         lightning: Default::default(),
         additive: &[],
         see_through: &[],
-        world_primitives: Default::default(),
         shadow_only: &[],
         celestial: &[],
         stars: None,
         hand: &[],
-        hand_items: &[],
         hand_fov_degrees: 70.0,
         screen: &[],
         pack: Default::default(),

crates/horizon-client-render/src/assets.rs

@@ -6,7 +6,13 @@ use horizon_world::{
     worldgen::{tags::TagDefinitions, terrain::TerrainBlockStates},
 };
 use serde_json::Value;
-use std::{collections::BTreeSet, io, path::Path, sync::Arc};
+use std::{
+    collections::BTreeSet,
+    fs::File,
+    io::{self, BufReader},
+    path::Path,
+    sync::Arc,
+};
 
 pub const MATERIALS: [&str; 6] = ["bedrock", "dirt", "stone", "sand", "oak_planks", "bricks"];
 #[derive(Clone, Copy)]
@@ -78,9 +84,7 @@ pub struct Assets {
 pub struct RenderAssets {
     pub sprite_size: u32,
     pub sprite_minimum_size: u32,
-    /// The block sprites' RGBA, layer by layer: as built until a renderer has
-    /// them, then kept compressed ([`SpritePixels`]).
-    pub pixels: SpritePixels,
+    pub pixels: Vec<u8>,
     pub texture_layers: u32,
     pub model_catalog: crate::models::StateModels,
     /// Shared parsed resources; item-only validation errors surface at item preparation.
@@ -107,76 +111,6 @@ pub struct RenderAssets {
     /// sprites are when it changes (`native_block_sprites_version`).
     pub generation: u64,
 }
-/// The block sprites' pixels for a renderer to upload. Once a renderer has
-/// them ([`Self::pack`]) they are kept lz4-compressed: the GPU holds the
-/// texture array, and the copy only serves a renderer made again (another
-/// window, a lost device, another graphics API), which waits for
-/// [`Self::get`] to uncompress them. Shared by the window and the workers'
-/// `RenderAssets`, so the compressed form replaces the raw one in place.
-pub struct SpritePixels(Arc<PixelStore>);
-struct PixelStore {
-    len: usize,
-    /// Set by the first `pack`: later calls cost one atomic read.
-    packing: std::sync::atomic::AtomicBool,
-    /// As built; dropped once `packed` holds them.
-    raw: std::sync::Mutex<Option<Arc<Vec<u8>>>>,
-    packed: std::sync::OnceLock<Vec<u8>>,
-}
-impl SpritePixels {
-    pub fn new(pixels: Vec<u8>) -> Self {
-        Self(Arc::new(PixelStore {
-            len: pixels.len(),
-            packing: std::sync::atomic::AtomicBool::new(false),
-            raw: std::sync::Mutex::new(Some(Arc::new(pixels))),
-            packed: std::sync::OnceLock::new(),
-        }))
-    }
-    /// Their size in bytes, uncompressed.
-    pub fn len(&self) -> usize {
-        self.0.len
-    }
-    pub fn is_empty(&self) -> bool {
-        self.0.len == 0
-    }
-    /// The pixels as built, uncompressed again once packed.
-    pub fn get(&self) -> Arc<Vec<u8>> {
-        let raw = self.0.raw.lock().unwrap_or_else(|e| e.into_inner()).clone();
-        raw.unwrap_or_else(|| {
-            let packed = self.0.packed.get().map(Vec::as_slice).unwrap_or_default();
-            Arc::new(
-                lz4_flex::decompress_size_prepended(packed)
-                    .ok()
-                    .filter(|p| p.len() == self.0.len)
-                    .unwrap_or_else(|| vec![0; self.0.len]),
-            )
-        })
-    }
-    /// Keep them compressed from now on, once a renderer has uploaded them:
-    /// compressed on a thread of their own, the raw copy dropped after.
-    pub fn pack(&self) {
-        use std::sync::atomic::Ordering;
-        if self.0.len == 0 || self.0.packing.swap(true, Ordering::Relaxed) {
-            return;
-        }
-        let store = self.0.clone();
-        let job = move || {
-            let raw = store.raw.lock().unwrap_or_else(|e| e.into_inner()).clone();
-            if let Some(raw) = raw {
-                let _ = store.packed.set(lz4_flex::compress_prepend_size(&raw));
-                // `get` reads the compressed copy from here on.
-                *store.raw.lock().unwrap_or_else(|e| e.into_inner()) = None;
-            }
-        };
-        let fallback = job.clone();
-        if std::thread::Builder::new()
-            .name("Sprite packing".into())
-            .spawn(job)
-            .is_err()
-        {
-            fallback();
-        }
-    }
-}
 /// The last `RenderAssets::generation` handed out.
 static GENERATION: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0);
 fn invalid(message: &str) -> io::Error {
@@ -184,12 +118,15 @@ fn invalid(message: &str) -> io::Error {
 }
 impl Assets {
     pub fn load(root: &Path) -> Result<Self> {
-        let manifest: Value = horizon_world::json_file::read(&root.join("horizon-resources.json"))?;
+        let manifest: Value = serde_json::from_reader(BufReader::new(File::open(
+            root.join("horizon-resources.json"),
+        )?))?;
         if manifest["data_version"].as_i64() != Some(i64::from(DATA_VERSION)) {
             return Err(invalid("resources do not match Horizon's pinned data version").into());
         }
         let (registry, flags) = horizon_world::level::data::load_registry_with_flags(root)?;
-        let bundle: Value = horizon_world::json_file::read(&root.join("block-tags.json"))?;
+        let bundle: Value =
+            serde_json::from_reader(BufReader::new(File::open(root.join("block-tags.json"))?))?;
         let mut definitions = TagDefinitions::default();
         for (name, text) in bundle
             .as_object()
@@ -270,20 +207,6 @@ impl Assets {
     pub fn reload(&self, root: &Path) -> Result<RenderAssets> {
         RenderAssets::load(root, self)
     }
-    /// [`Assets::reload`] with the model library already parsed.
-    ///
-    /// Parsing it reads every model file under `assets/`, which needs no
-    /// block registry, so a caller that has the files to spare can start
-    /// it before `Assets::load` finishes and hand the result in here. On
-    /// a cold cache that is most of a second of reading moved off the
-    /// critical path.
-    pub fn reload_with_models(
-        &self,
-        root: &Path,
-        parsed: crate::model_library::ParsedModels,
-    ) -> Result<RenderAssets> {
-        RenderAssets::load_with_parsed(root, self, true, Some(parsed))
-    }
     /// [`Assets::reload`] for a server, which draws nothing: the sprites'
     /// layers, without the block or item models or the textures' pixels.
     pub fn reload_for_server(&self, root: &Path) -> Result<RenderAssets> {
@@ -295,16 +218,6 @@ impl RenderAssets {
         Self::load_with(root, assets, true)
     }
     fn load_with(root: &Path, assets: &Assets, draws: bool) -> Result<Self> {
-        Self::load_with_parsed(root, assets, draws, None)
-    }
-    /// `parsed`: the model library when a caller parsed it ahead of this
-    /// (see [`Assets::reload_with_models`]); otherwise it is parsed here.
-    fn load_with_parsed(
-        root: &Path,
-        assets: &Assets,
-        draws: bool,
-        parsed: Option<crate::model_library::ParsedModels>,
-    ) -> Result<Self> {
         let registry = assets.registry;
         let mut sprites = crate::sprites::Sprites::with_disk_cache(root);
         for name in MATERIALS {
@@ -312,24 +225,17 @@ impl RenderAssets {
         }
         // A server draws no block and no item: its block models (about 24 MB
         // baked) and item model library (7 MB) stay empty.
-        let parsed = match parsed {
-            Some(parsed) => parsed,
-            None if draws => {
-                let _step = crate::spans::startup::step("core.models_parse");
-                crate::model_library::ParsedModels::load(root)
-            }
-            None => crate::model_library::ParsedModels::default(),
+        let parsed = if draws {
+            crate::model_library::ParsedModels::load(root)
+        } else {
+            crate::model_library::ParsedModels::default()
         };
         let mut models = if draws {
-            let _step = crate::spans::startup::step("core.models_bake");
             crate::models::prepare_with_models(root, registry, &mut sprites, &parsed)?
         } else {
             crate::models::PreparedModels::default()
         };
-        let model_library = {
-            let _step = crate::spans::startup::step("core.item_library");
-            parsed.into_item_library()
-        };
+        let model_library = parsed.into_item_library();
         // Fluids are drawn by the fluid renderer, not block models; breaking
         // progress uses the destroy-stage overlays.
         for name in [
@@ -343,10 +249,8 @@ impl RenderAssets {
         }
         for stage in 0..10 {
             sprites.insert(root, &format!("minecraft:block/destroy_stage_{stage}"))?;
-            sprites.insert(root, &format!("minecraft:block/destroy_oit_stage_{stage}"))?;
         }
         let fusion = if draws {
-            let _step = crate::spans::startup::step("core.fusion");
             crate::fusion::FusionTextures::load(root, registry, &mut sprites, &mut models.catalog)
         } else {
             Default::default()
@@ -397,7 +301,7 @@ impl RenderAssets {
             sprite_size: sprites.size,
             sprite_minimum_size: sprites.minimum_size,
             texture_layers: u32::try_from(sprites.count())?,
-            pixels: SpritePixels::new(sprites.pixels),
+            pixels: sprites.pixels,
             model_catalog: models.catalog,
             model_library,
             model_placements: models.placements,
@@ -495,29 +399,4 @@ mod tests {
             [ConsumeEffect::ApplyEffects { probability, .. }] if probability == 0.3
         ));
     }
-
-    #[test]
-    fn sprite_pixels_come_back_the_same_once_packed() {
-        // Two layers of 16x16 RGBA with some structure, as sprites have.
-        let pixels: Vec<u8> = (0..2 * 16 * 16 * 4).map(|i| (i * 7 % 251) as u8).collect();
-        let stored = super::SpritePixels::new(pixels.clone());
-        assert_eq!(*stored.get(), pixels);
-        stored.pack();
-        stored.pack();
-        // The packing thread drops the raw copy once the compressed one is set.
-        let started = std::time::Instant::now();
-        while stored.0.raw.lock().unwrap().is_some() {
-            assert!(started.elapsed().as_secs() < 10, "packing never finished");
-            std::thread::yield_now();
-        }
-        assert!(
-            stored
-                .0
-                .packed
-                .get()
-                .is_some_and(|p| p.len() < pixels.len())
-        );
-        assert_eq!(*stored.get(), pixels);
-        assert_eq!(stored.len(), pixels.len());
-    }
 }

crates/horizon-client-render/src/atlas_sources.rs

@@ -379,17 +379,14 @@ pub fn generate(
             let (_, _, key) = load(palette_key, "textures/palettes")?;
             let (_, _, target) = load(palette, "textures/palettes")?;
             let mut mapped = argb(&pixels);
-            let key = argb(&key);
-            let target = argb(&target);
-            apply_palette(&mut mapped, &key, &target)?;
-            let out: Vec<u8> = mapped
+            apply_palette(&mut mapped, &argb(&key), &argb(&target))?;
+            let out = mapped
                 .iter()
                 .flat_map(|p| {
                     let [a, r, g, b] = p.to_be_bytes();
                     [r, g, b, a]
                 })
                 .collect();
-            drop(mapped);
             Some((w, h, out))
         }
     }

crates/horizon-client-render/src/audio.rs

@@ -2,9 +2,7 @@
 //! small mixer standing in for OpenAL: one channel per source with its gain,
 //! pitch, linear distance attenuation (`AL_LINEAR_DISTANCE`, reference 0,
 //! rolloff 1), looping, relative flag and source state, Ogg/Vorbis decoding
-//! (streams on a worker thread) and OpenAL Soft's mixing: mono sources panned
-//! and attenuated, multi-channel buffers (stereo music and records) played
-//! direct as OpenAL does.
+//! (streams on a worker thread) and OpenAL Soft's stereo panning.
 use crate::Result;
 use crate::sound_engine::{
     Attenuation, Backend, Bound, ChannelId, InstanceId, PlayResult, SoundEngine, SoundInstance,
@@ -31,7 +29,7 @@ enum State {
 }
 /// An OpenAL source.
 struct Channel {
-    samples: Option<(Arc<Vec<f32>>, u32, u16)>,
+    samples: Option<(Arc<Vec<f32>>, u32)>,
     position: f64,
     state: State,
     gain: f32,
@@ -63,8 +61,6 @@ struct Mixer {
     world_names: Vec<String>,
     /// The callback's cameras (position, basis, world), kept to be refilled without allocating.
     cameras: Vec<([f64; 3], Basis, u32)>,
-    /// Per-source gain/pan/step cache for one buffer, reused across callbacks.
-    voices: Vec<(ChannelId, [f32; 3], f64)>,
     limiter_peak: f32,
     /// The output device the stream was opened on (`Library.currentDeviceName`).
     #[cfg(feature = "audio")]
@@ -137,8 +133,8 @@ impl Drop for MixerBackend {
 static SHARED_CHANNELS: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0);
 /// Two players' copies of one sound: started within this of each other.
 const SAME_SOUND: std::time::Duration = std::time::Duration::from_millis(150);
-/// Decoded interleaved samples, their rate and channel count (`None`: the file did not load).
-type Samples = Option<(Arc<Vec<f32>>, u32, u16)>;
+/// Decoded samples and their rate (`None`: the file did not load).
+type Samples = Option<(Arc<Vec<f32>>, u32)>;
 /// Decoded static sounds (`SoundBufferLibrary`'s buffers), dropped least
 /// recently used first past `CACHE_BYTES`: kept forever, every sound heard in
 /// a session stayed (up to 1.4 GiB of samples, villages playing hundreds).
@@ -179,7 +175,7 @@ impl SoundCache {
     fn size(samples: &Samples) -> usize {
         samples
             .as_ref()
-            .map_or(0, |(s, _, _)| s.len() * std::mem::size_of::<f32>())
+            .map_or(0, |(s, _)| s.len() * std::mem::size_of::<f32>())
     }
 }
 /// A static sound to decode for a channel waiting on it.
@@ -210,18 +206,6 @@ fn attach(mixer: &Mutex<Mixer>, channel: ChannelId, samples: Samples, looping: b
 type Stream = cpal::Stream;
 #[cfg(not(feature = "audio"))]
 type Stream = std::convert::Infallible;
-/// A level sound retained for the network broadcaster, in playback order.
-#[derive(Clone, Debug)]
-pub struct CapturedSound {
-    pub event: String,
-    pub position: [f64; 3],
-    pub volume: f32,
-    pub pitch: f32,
-    pub source: usize,
-    pub entity: Option<u32>,
-    pub except_entity: Option<u32>,
-}
-
 pub struct Audio {
     _stream: Option<Stream>,
     device_name: String,
@@ -238,7 +222,7 @@ pub struct Audio {
     source_override: Option<usize>,
     /// Positional sounds played since the last drain, kept while the world
     /// is open to the network so guests hear them too.
-    pub capture: Option<Vec<CapturedSound>>,
+    pub capture: Option<Vec<(String, [f64; 3], f32, f32)>>,
     /// How many times each positional sound played (the control socket's `status`),
     /// with or without an audio device.
     pub heard: std::collections::BTreeMap<String, u32>,
@@ -262,7 +246,7 @@ pub struct Audio {
     #[cfg(feature = "audio")]
     device_ticks: u32,
 }
-fn decode(path: &Path) -> Option<(Vec<f32>, u32, u16)> {
+fn decode(path: &Path) -> Option<(Vec<f32>, u32)> {
     use symphonia::core::{
         audio::SampleBuffer, codecs::DecoderOptions, formats::FormatOptions, io::MediaSourceStream,
         meta::MetadataOptions, probe::Hint,
@@ -286,8 +270,7 @@ fn decode(path: &Path) -> Option<(Vec<f32>, u32, u16)> {
     let mut decoder = symphonia::default::get_codecs()
         .make(&track.codec_params, &DecoderOptions::default())
         .ok()?;
-    let mut samples = Vec::new();
-    let mut channels = 0u16;
+    let mut mono = Vec::new();
     while let Ok(packet) = format.next_packet() {
         if packet.track_id() != id {
             continue;
@@ -296,34 +279,14 @@ fn decode(path: &Path) -> Option<(Vec<f32>, u32, u16)> {
             continue;
         };
         let spec = *buffer.spec();
-        let frame_channels = spec.channels.count().max(1);
-        let mut decoded = SampleBuffer::<f32>::new(buffer.capacity() as u64, spec);
-        decoded.copy_interleaved_ref(buffer);
-        if channels == 0 {
-            channels = frame_channels.min(2) as u16;
-        }
-        if frame_channels <= 2 {
-            samples.extend_from_slice(decoded.samples());
-        } else {
-            // OpenAL plays multi-channel buffers direct; a stereo output hears the odd/even split.
-            for frame in decoded.samples().chunks(frame_channels) {
-                let (mut left, mut right) = (0.0, 0.0);
-                let (mut lefts, mut rights) = (0.0f32, 0.0f32);
-                for (i, sample) in frame.iter().enumerate() {
-                    if i % 2 == 0 {
-                        left += sample;
-                        lefts += 1.0;
-                    } else {
-                        right += sample;
-                        rights += 1.0;
-                    }
-                }
-                samples.push(left / lefts.max(1.0));
-                samples.push(right / rights.max(1.0));
-            }
+        let channels = spec.channels.count().max(1);
+        let mut samples = SampleBuffer::<f32>::new(buffer.capacity() as u64, spec);
+        samples.copy_interleaved_ref(buffer);
+        for frame in samples.samples().chunks(channels) {
+            mono.push(frame.iter().sum::<f32>() / channels as f32);
         }
     }
-    (channels != 0).then_some((samples, rate, channels))
+    Some((mono, rate))
 }
 /// A sound file without its variant number (`mob/creeper/say2.ogg` is `mob/creeper/say`): each
 /// player's game picks its own variant of the same event.
@@ -450,7 +413,7 @@ impl Backend for MixerBackend {
             // A streamed sound loops by restarting its stream.
             let mixer = self.mixer.clone();
             std::thread::spawn(move || {
-                let samples = decode(&file).map(|(s, r, c)| (Arc::new(s), r, c));
+                let samples = decode(&file).map(|(s, r)| (Arc::new(s), r));
                 attach(&mixer, channel, samples, looping);
             });
             return;
@@ -471,7 +434,7 @@ impl Backend for MixerBackend {
                         // Queued twice before the first decode finished.
                         let cached = cache.lock().ok().and_then(|mut c| c.get(&job.key));
                         let samples = cached.unwrap_or_else(|| {
-                            let samples = decode(&job.file).map(|(s, r, c)| (Arc::new(s), r, c));
+                            let samples = decode(&job.file).map(|(s, r)| (Arc::new(s), r));
                             if let Ok(mut c) = cache.lock() {
                                 c.insert(job.key, samples.clone());
                             }
@@ -581,8 +544,9 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
         (forward, up, right)
     };
     // Every camera hearing (splitscreen: the other players' too), in the mixer's own buffer.
-    mixer.cameras.clear();
-    mixer.cameras.extend(
+    let mut cameras = std::mem::take(&mut mixer.cameras);
+    cameras.clear();
+    cameras.extend(
         std::iter::once((
             0,
             (mixer.listener, mixer.listener_yaw, mixer.listener_pitch),
@@ -601,19 +565,14 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
             )
         }),
     );
-    let shared = mixer.cameras.len() > 1;
+    let shared = cameras.len() > 1;
     let dot = |a: [f64; 3], b: [f64; 3]| (a[0] * b[0] + a[1] * b[1] + a[2] * b[2]) as f32;
     // Gains and pans per source for this buffer.
-    let mut voices = std::mem::take(&mut mixer.voices);
-    voices.clear();
+    let mut voices: Vec<(ChannelId, [f32; 3], f64)> = Vec::new();
     for (id, c) in &mixer.channels {
-        let Some((_, source_rate, source_channels)) = &c.samples else {
+        let Some((_, source_rate)) = &c.samples else {
             continue;
         };
-        // OpenAL plays a multi-channel buffer direct: no panning and no distance attenuation
-        // (`CalcVoiceParams`' non-spatialized path, vanilla's HRTF-off stereo context). Vanilla's
-        // music and records are stereo. A mono buffer is the positional one.
-        let direct = *source_channels > 1;
         if c.state != State::Playing {
             continue;
         }
@@ -627,8 +586,7 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
         };
         let length = |d: [f64; 3]| d[0] * d[0] + d[1] * d[1] + d[2] * d[2];
         // The nearest camera hears it (one camera but in splitscreen).
-        let camera = mixer
-            .cameras
+        let camera = cameras
             .iter()
             .filter(|camera| c.relative || camera.2 == c.world)
             .min_by(|a, b| length(away(a.0)).total_cmp(&length(away(b.0))))
@@ -638,49 +596,39 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
         let d = if c.relative { at } else { away(listener) };
         let distance = (d[0] * d[0] + d[1] * d[1] + d[2] * d[2]).sqrt() as f32;
         let gain = if camera.is_some() {
-            c.gain.clamp(0.0, 1.0)
-                * if direct {
-                    1.0
-                } else {
-                    distance_gain(c.linear, distance)
-                }
+            c.gain.clamp(0.0, 1.0) * distance_gain(c.linear, distance)
         } else {
             0.0
         };
-        let [left, right] = if direct {
-            [gain, gain]
+        // Relative sources are already in OpenAL's listener space (-Z ahead).
+        let [mut left, mut right] = if c.relative {
+            stereo_gains(d[0] as f32, d[1] as f32, -d[2] as f32)
         } else {
-            // Relative sources are already in OpenAL's listener space (-Z ahead).
-            let [mut left, mut right] = if c.relative {
-                stereo_gains(d[0] as f32, d[1] as f32, -d[2] as f32)
-            } else {
-                stereo_gains(dot(d, right), dot(d, up), dot(d, forward))
-            };
-            if shared {
-                // Several players on the speakers: half the stereo width, as left and right are
-                // nobody's in particular.
-                let middle = (left + right) / 2.0;
-                left = middle + (left - middle) / 2.0;
-                right = middle + (right - middle) / 2.0;
-            }
-            [left * gain, right * gain]
+            stereo_gains(dot(d, right), dot(d, up), dot(d, forward))
         };
+        if shared {
+            // Several players on the speakers: half the stereo width, as left and right are
+            // nobody's in particular.
+            let middle = (left + right) / 2.0;
+            left = middle + (left - middle) / 2.0;
+            right = middle + (right - middle) / 2.0;
+        }
+        let [left, right] = [left, right].map(|pan| gain * pan);
         let step = f64::from(*source_rate) / f64::from(rate) * f64::from(c.pitch.max(0.0));
         voices.push((*id, [left, right, gain], step));
     }
-    for (id, [left, right, gain], step) in voices.iter().copied() {
+    mixer.cameras = cameras;
+    for (id, [left, right, gain], step) in voices {
         let Some(c) = mixer.channels.get_mut(&id) else {
             continue;
         };
-        let Some((samples, _, source_channels)) = c.samples.clone() else {
+        let Some((samples, _)) = c.samples.clone() else {
             continue;
         };
-        let source_channels = source_channels as usize;
-        let frames = samples.len() / source_channels;
         for frame in data.chunks_mut(channels) {
             let mut i = c.position as usize;
-            if i + 1 >= frames {
-                if c.looping && frames > 1 {
+            if i + 1 >= samples.len() {
+                if c.looping && samples.len() > 1 {
                     c.position = 0.0;
                     i = 0;
                 } else {
@@ -689,29 +637,17 @@ fn mix(mixer: &mut Mixer, data: &mut [f32], channels: usize, rate: u32) {
                 }
             }
             let t = (c.position - i as f64) as f32;
-            if source_channels > 1 {
-                let l = samples[i * 2] * (1.0 - t) + samples[(i + 1) * 2] * t;
-                let r = samples[i * 2 + 1] * (1.0 - t) + samples[(i + 1) * 2 + 1] * t;
-                if channels >= 2 {
-                    frame[0] += l * left;
-                    frame[1] += r * right;
-                } else {
-                    frame[0] += (l + r) * 0.5 * gain;
-                }
+            let s = samples[i] * (1.0 - t) + samples[i + 1] * t;
+            if channels >= 2 {
+                frame[0] += s * left;
+                frame[1] += s * right;
             } else {
-                let s = samples[i] * (1.0 - t) + samples[i + 1] * t;
-                if channels >= 2 {
-                    frame[0] += s * left;
-                    frame[1] += s * right;
-                } else {
-                    // A mono output has no panning: the source's own gain.
-                    frame[0] += s * gain;
-                }
+                // A mono output has no panning: the source's own gain.
+                frame[0] += s * gain;
             }
             c.position += step;
         }
     }
-    mixer.voices = voices;
     // Limit the whole buffer together, preserving waveform and stereo balance
     // instead of flattening each overloaded sample; release over 200 ms
     // (OpenAL Soft's output limiter, `ALC_OUTPUT_LIMITER_SOFT`, releases
@@ -754,27 +690,17 @@ fn open_device(
 ) -> Result<(cpal::Stream, cpal::SupportedStreamConfig)> {
     use cpal::SampleFormat as F;
     let config = device.default_output_config()?;
-    let build = |stream_config: &cpal::StreamConfig| match config.sample_format() {
-        F::F32 => build_stream::<f32>(device, &config, stream_config, mixer.clone()),
-        F::F64 => build_stream::<f64>(device, &config, stream_config, mixer.clone()),
-        F::I16 => build_stream::<i16>(device, &config, stream_config, mixer.clone()),
-        F::I32 => build_stream::<i32>(device, &config, stream_config, mixer.clone()),
-        F::I8 => build_stream::<i8>(device, &config, stream_config, mixer.clone()),
-        F::U16 => build_stream::<u16>(device, &config, stream_config, mixer.clone()),
-        F::U32 => build_stream::<u32>(device, &config, stream_config, mixer.clone()),
-        F::U8 => build_stream::<u8>(device, &config, stream_config, mixer.clone()),
+    let stream = match config.sample_format() {
+        F::F32 => build_stream::<f32>(device, &config, mixer.clone()),
+        F::F64 => build_stream::<f64>(device, &config, mixer.clone()),
+        F::I16 => build_stream::<i16>(device, &config, mixer.clone()),
+        F::I32 => build_stream::<i32>(device, &config, mixer.clone()),
+        F::I8 => build_stream::<i8>(device, &config, mixer.clone()),
+        F::U16 => build_stream::<u16>(device, &config, mixer.clone()),
+        F::U32 => build_stream::<u32>(device, &config, mixer.clone()),
+        F::U8 => build_stream::<u8>(device, &config, mixer.clone()),
         other => Err(format!("unsupported sample format {other}").into()),
-    };
-    let short = audio_stream_config(&config);
-    let stream = match build(&short) {
-        Ok(stream) => stream,
-        // A device that refuses the short fixed buffer still plays with cpal's default one.
-        Err(e) if short != config.config() => {
-            log::info!("Horizon: audio output refused a short buffer ({e}); using the default");
-            build(&config.config())?
-        }
-        Err(e) => return Err(e),
-    };
+    }?;
     stream.play()?;
     if let Ok(mut m) = mixer.lock() {
         m.device_name = device.name().unwrap_or_default();
@@ -855,35 +781,10 @@ fn cards_changed(seen: Option<&str>, cards: Option<&str>) -> bool {
         _ => true,
     }
 }
-
-/// The cpal `StreamConfig` to open an output stream with. On Linux the ALSA
-/// backend's `BufferSize::Default` means a ~100 ms buffer, so sound effects
-/// come out about 100 ms late: request a short fixed buffer there. Other
-/// platforms keep cpal's default behaviour.
-#[cfg(feature = "audio")]
-fn audio_stream_config(config: &cpal::SupportedStreamConfig) -> cpal::StreamConfig {
-    #[cfg(target_os = "linux")]
-    {
-        let range = match config.buffer_size() {
-            cpal::SupportedBufferSize::Range { min, max } => (*min, *max),
-            cpal::SupportedBufferSize::Unknown => (256, 4096),
-        };
-        let target = 1024u32.clamp(range.0, range.1);
-        let mut sc = config.config();
-        sc.buffer_size = cpal::BufferSize::Fixed(target);
-        sc
-    }
-    #[cfg(not(target_os = "linux"))]
-    {
-        config.config()
-    }
-}
-
 #[cfg(feature = "audio")]
 fn build_stream<T: cpal::SizedSample + cpal::FromSample<f32>>(
     device: &cpal::Device,
     config: &cpal::SupportedStreamConfig,
-    stream_config: &cpal::StreamConfig,
     mixer: Arc<Mutex<Mixer>>,
 ) -> Result<cpal::Stream> {
     let rate = config.sample_rate().0;
@@ -891,7 +792,7 @@ fn build_stream<T: cpal::SizedSample + cpal::FromSample<f32>>(
     let mut scratch = Vec::new();
     let on_error = mixer.clone();
     let stream = device.build_output_stream(
-        stream_config,
+        &config.config(),
         move |data: &mut [T], _| {
             scratch.resize(data.len(), 0.0f32);
             if let Ok(mut m) = mixer.lock() {
@@ -1358,17 +1259,7 @@ impl Audio {
     pub fn play_after(&mut self, event: &str, at: [f64; 3], volume: f32, pitch: f32, ticks: i32) {
         let seed = self.random.next_long();
         if let Some(capture) = self.capture.as_mut() {
-            capture.push(CapturedSound {
-                event: event.to_owned(),
-                position: at,
-                volume,
-                pitch,
-                source: self.source_override.unwrap_or_else(|| {
-                    crate::settings::sound_source(&crate::sound_events::normalize(event))
-                }),
-                entity: None,
-                except_entity: None,
-            });
+            capture.push((event.to_owned(), at, volume, pitch));
         }
         *self.heard.entry(event.to_owned()).or_default() += 1;
         self.sync_volumes();
@@ -1407,66 +1298,6 @@ impl Audio {
         preview.preview(self, source, volume);
         self.preview = preview;
     }
-    /// An incoming entity-sound packet: retain its seed and category without rebroadcasting it.
-    pub fn play_entity_seeded(
-        &mut self,
-        event: &str,
-        source: usize,
-        volume: f32,
-        pitch: f32,
-        seed: i64,
-        entity: crate::sound_engine::SoundEntity,
-    ) {
-        *self.heard.entry(event.to_owned()).or_default() += 1;
-        let event = crate::sound_events::normalize(event);
-        let instance = SoundInstance::entity_bound(
-            &event,
-            source,
-            volume,
-            pitch,
-            LegacyRandom::new(seed),
-            entity,
-        );
-        self.play_instance(instance, false);
-    }
-    /// A level's entity overload: preserve the emitter and excluded player for
-    /// the server broadcaster while the local sound follows the same object.
-    pub fn play_bound(
-        &mut self,
-        event: &str,
-        source: usize,
-        volume: f32,
-        pitch: f32,
-        entity: crate::sound_engine::SoundEntity,
-        except_entity: Option<u32>,
-    ) {
-        if let Some(capture) = self.capture.as_mut() {
-            capture.push(CapturedSound {
-                event: event.to_owned(),
-                position: entity.state().position,
-                volume,
-                pitch,
-                source,
-                entity: Some(entity.id),
-                except_entity,
-            });
-        }
-        let seed = self.random.next_long();
-        self.play_entity_seeded(event, source, volume, pitch, seed, entity);
-    }
-    /// Removal belongs to the old object even if its numeric id is immediately reused.
-    pub fn remove_sound_entity(&mut self, id: u32) {
-        for entity in self
-            .engine
-            .bound_entities()
-            .into_iter()
-            .filter(|e| e.id == id)
-        {
-            let mut state = entity.state();
-            state.removed = true;
-            entity.update(state);
-        }
-    }
     /// `play` with the seed a sound packet carries.
     pub fn play_seeded(
         &mut self,
@@ -1477,17 +1308,7 @@ impl Audio {
         seed: i64,
     ) {
         if let (Some(capture), Some(at)) = (self.capture.as_mut(), at) {
-            capture.push(CapturedSound {
-                event: event.to_owned(),
-                position: at,
-                volume,
-                pitch,
-                source: self.source_override.unwrap_or_else(|| {
-                    crate::settings::sound_source(&crate::sound_events::normalize(event))
-                }),
-                entity: None,
-                except_entity: None,
-            });
+            capture.push((event.to_owned(), at, volume, pitch));
         }
         if at.is_some() {
             *self.heard.entry(event.to_owned()).or_default() += 1;
@@ -1627,81 +1448,6 @@ impl Sounds for Audio {
 mod tests {
     use super::*;
 
-    #[test]
-    fn level_capture_keeps_order_category_entity_and_actor_exclusion() {
-        let mut audio = Audio::silent(Path::new("/nonexistent/horizon-entity-sound-test"));
-        audio.capture = Some(Vec::new());
-        let mut expected = audio.random.clone();
-        audio.play_on(
-            7,
-            "minecraft:block.amethyst_block.chime",
-            Some([1.0; 3]),
-            0.5,
-            1.0,
-        );
-        let entity = crate::sound_engine::SoundEntity::new(37, [2.123456789, 64.0, -3.0], false);
-        audio.play_bound(
-            "minecraft:block.amethyst_block.chime",
-            6,
-            2.0,
-            1.2,
-            entity,
-            Some(17),
-        );
-        let sounds = audio.capture.as_ref().unwrap();
-        assert_eq!(sounds.len(), 2);
-        assert_eq!(
-            (sounds[0].source, sounds[0].entity, sounds[0].except_entity),
-            (7, None, None)
-        );
-        let bound = &sounds[1];
-        assert_eq!(
-            (bound.source, bound.entity, bound.except_entity),
-            (6, Some(37), Some(17))
-        );
-        assert_eq!(bound.position, [2.123456789, 64.0, -3.0]);
-        assert_eq!((bound.volume, bound.pitch), (2.0, 1.2));
-        expected.next_long();
-        expected.next_long();
-        assert_eq!(audio.random.next_long(), expected.next_long());
-    }
-
-    #[test]
-    fn entity_sound_packets_neither_rebroadcast_nor_advance_the_local_seed_generator() {
-        let mut audio = Audio::silent(Path::new("/nonexistent/horizon-entity-sound-test"));
-        audio.capture = Some(Vec::new());
-        let mut expected = audio.random.clone();
-        let entity = crate::sound_engine::SoundEntity::new(7, [1.0, 2.0, 3.0], false);
-        audio.play_entity_seeded("minecraft:fixture.bound", 6, 0.7, 1.2, 42, entity);
-        assert!(audio.capture.as_ref().unwrap().is_empty());
-        assert_eq!(audio.random.next_long(), expected.next_long());
-    }
-    #[test]
-    fn removal_marks_only_existing_references_to_that_entity() {
-        use crate::sound_engine::SoundEntity;
-        let mut audio = Audio::silent(Path::new("/nonexistent/horizon-entity-sound-test"));
-        let old = SoundEntity::new(7, [0.0; 3], false);
-        let other = SoundEntity::new(8, [0.0; 3], false);
-        for entity in [old.clone(), other.clone()] {
-            audio.engine.add(
-                SoundInstance::entity_bound(
-                    "minecraft:fixture.bound",
-                    6,
-                    1.0,
-                    1.0,
-                    LegacyRandom::new(42),
-                    entity,
-                ),
-                true,
-            );
-        }
-        audio.remove_sound_entity(7);
-        let replacement = SoundEntity::new(7, [10.0; 3], false);
-        assert!(old.state().removed);
-        assert!(!other.state().removed);
-        assert!(!replacement.state().removed);
-    }
-
     #[test]
     fn button_click_uses_vanilla_ui_parameters_without_advancing_world_random() {
         let mut audio = Audio::silent(Path::new("/nonexistent/horizon-test-assets"));
@@ -1736,7 +1482,7 @@ mod tests {
 
     fn channel(samples: Vec<f32>, linear: Option<f32>, at: [f32; 3], looping: bool) -> Channel {
         Channel {
-            samples: Some((Arc::new(samples), 48_000, 1)),
+            samples: Some((Arc::new(samples), 48_000)),
             position: 0.0,
             state: State::Playing,
             gain: 1.0,
@@ -1751,23 +1497,11 @@ mod tests {
         }
     }
 
-    /// A channel whose buffer is interleaved stereo.
-    fn stereo_channel(
-        samples: Vec<f32>,
-        linear: Option<f32>,
-        at: [f32; 3],
-        looping: bool,
-    ) -> Channel {
-        let mut c = channel(Vec::new(), linear, at, looping);
-        c.samples = Some((Arc::new(samples), 48_000, 2));
-        c
-    }
-
     #[test]
     fn decoded_sounds_stay_within_the_budget_least_recently_used_out() {
         let mut cache = SoundCache::default();
         let quarter = CACHE_BYTES / 4 / std::mem::size_of::<f32>();
-        let sound = || Some((Arc::new(vec![0.0f32; quarter]), 44100, 1));
+        let sound = || Some((Arc::new(vec![0.0f32; quarter]), 44100));
         for key in ["a", "b", "c", "d"] {
             cache.insert(key.into(), sound());
         }
@@ -1894,32 +1628,6 @@ mod tests {
         }
     }
 
-    #[test]
-    fn stereo_sounds_play_direct_without_panning_or_distance() {
-        // OpenAL Soft plays a multi-channel buffer direct (its non-spatialized path), so vanilla's
-        // stereo music and records keep their own left/right mix at full volume whichever way the
-        // camera faces and however far it is. Only mono buffers are panned and attenuated.
-        let wave = [0.1, -0.2, 0.3, -0.4, 0.5, -0.6]; // three stereo frames
-        let expected = [wave[0], wave[1], wave[2], wave[3]];
-        for (yaw, at, linear, listener) in [
-            (0.0, [100.0, 0.0, 0.0], Some(16.0), [0.0; 3]),
-            (180.0, [0.0, 0.0, -100.0], Some(16.0), [0.0; 3]),
-            (90.0, [2.0, 1.0, -3.0], Some(16.0), [5.0, 60.0, 5.0]),
-            (0.0, [0.0, 0.0, 0.0], None, [0.0; 3]),
-        ] {
-            let mut m = Mixer {
-                listener,
-                listener_yaw: yaw,
-                ..Mixer::default()
-            };
-            m.channels
-                .insert(1, stereo_channel(wave.to_vec(), linear, at, false));
-            let mut data = [0.0; 4];
-            mix(&mut m, &mut data, 2, 48_000);
-            assert_eq!(data, expected, "yaw {yaw}, source {at:?}");
-        }
-    }
-
     #[test]
     fn panning_follows_the_camera_rotation() {
         let gains = |yaw: f32, pitch: f32, at: [f32; 3]| {

crates/horizon-client-render/src/auth.rs

@@ -49,10 +49,6 @@ impl AuthSession {
             access_token: access_token.to_owned(),
         }
     }
-
-    pub fn access_token(&self) -> &str {
-        &self.access_token
-    }
     /// The session file's JSON: {"name", "uuid", "access_token", "user_type": "msa", "xuid"}.
     pub fn parse(text: &str) -> Result<Self, String> {
         let v: serde_json::Value =
@@ -105,22 +101,6 @@ impl AuthSession {
         let _ = std::fs::remove_file(path);
         Self::parse(&text.map_err(|e| format!("{}: {e}", path.display()))?)
     }
-    /// The access token's expiry (its JWT `exp`) has passed, or is a minute away: the session
-    /// service would refuse it. A token that doesn't read as a JWT counts as good: the server
-    /// says.
-    pub fn expired(&self) -> bool {
-        let exp = self
-            .access_token
-            .split('.')
-            .nth(1)
-            .and_then(|p| crate::skins::base64_decode(&p.replace('-', "+").replace('_', "/")))
-            .and_then(|json| serde_json::from_slice::<serde_json::Value>(&json).ok())
-            .and_then(|v| v.get("exp")?.as_u64());
-        let now = SystemTime::now()
-            .duration_since(SystemTime::UNIX_EPOCH)
-            .map_or(0, |d| d.as_secs());
-        exp.is_some_and(|exp| exp <= now + 60)
-    }
 }
 
 static CURRENT: OnceLock<Arc<AuthSession>> = OnceLock::new();
@@ -456,8 +436,11 @@ struct ChatKeys {
     fetching: bool,
     next_try: Option<std::time::Instant>,
 }
-static CHAT_KEYS: std::sync::LazyLock<Mutex<std::collections::HashMap<u128, ChatKeys>>> =
-    std::sync::LazyLock::new(|| Mutex::new(std::collections::HashMap::new()));
+static CHAT_KEYS: Mutex<ChatKeys> = Mutex::new(ChatKeys {
+    current: None,
+    fetching: false,
+    next_try: None,
+});
 
 /// prepareKeyPair (`now`: on a join) or, from a tick, shouldRefreshKeyPair
 /// then prepareKeyPair: start fetching when there is no key pair or it is
@@ -466,14 +449,7 @@ pub fn prepare_chat_keys(now: bool) {
     let Some(session) = current() else {
         return;
     };
-    prepare_chat_keys_for(session, now);
-}
-
-/// Prepare keys for this player, independently of the other local accounts.
-pub fn prepare_chat_keys_for(session: Arc<AuthSession>, now: bool) {
-    let uuid = session.uuid;
-    let mut accounts = CHAT_KEYS.lock().unwrap();
-    let keys = accounts.entry(uuid).or_default();
+    let mut keys = CHAT_KEYS.lock().unwrap();
     let instant = std::time::Instant::now();
     if keys.fetching || !now && keys.next_try.is_some_and(|t| instant < t) {
         return;
@@ -487,13 +463,12 @@ pub fn prepare_chat_keys_for(session: Arc<AuthSession>, now: bool) {
         return;
     }
     keys.fetching = true;
-    drop(accounts);
+    drop(keys);
     let spawned = std::thread::Builder::new()
         .name("Profile key fetch".into())
         .spawn(move || {
             let result = fetch_chat_keys(&session);
-            let mut accounts = CHAT_KEYS.lock().unwrap();
-            let keys = accounts.entry(uuid).or_default();
+            let mut keys = CHAT_KEYS.lock().unwrap();
             keys.fetching = false;
             match result {
                 Ok(pair) => keys.current = Some(Arc::new(pair)),
@@ -501,24 +476,19 @@ pub fn prepare_chat_keys_for(session: Arc<AuthSession>, now: bool) {
             }
         });
     if spawned.is_err() {
-        CHAT_KEYS.lock().unwrap().entry(uuid).or_default().fetching = false;
+        CHAT_KEYS.lock().unwrap().fetching = false;
     }
 }
 
 /// The chat key pair fetched so far, unless it has expired.
 pub fn chat_keys() -> Option<Arc<ChatKeyPair>> {
-    chat_keys_for(current()?.uuid)
-}
-
-/// This account's key pair; another local player's keys can never be returned.
-pub fn chat_keys_for(uuid: u128) -> Option<Arc<ChatKeyPair>> {
+    let now = now_millis();
     CHAT_KEYS
         .lock()
         .unwrap()
-        .get(&uuid)?
         .current
         .clone()
-        .filter(|k| !k.public.has_expired(now_millis()))
+        .filter(|k| !k.public.has_expired(now))
 }
 
 const MINECRAFT_PROFILE: &str = "https://api.minecraftservices.com/minecraft/profile";
@@ -662,42 +632,6 @@ mod tests {
         }
     }
 
-    /// base64url without padding, as a JWT's parts are.
-    fn base64url(bytes: &[u8]) -> String {
-        const ALPHABET: &[u8; 64] =
-            b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
-        let mut out = String::new();
-        for chunk in bytes.chunks(3) {
-            let n =
-                chunk.iter().fold(0u32, |n, &b| n << 8 | u32::from(b)) << (8 * (3 - chunk.len()));
-            for k in 0..=chunk.len() {
-                out.push(char::from(ALPHABET[(n >> (18 - 6 * k) & 63) as usize]));
-            }
-        }
-        out
-    }
-
-    #[test]
-    fn a_token_past_its_exp_is_expired() {
-        // header.payload.signature, the payload base64url without padding.
-        let token = |exp: u64| {
-            let json = format!(r#"{{"exp":{exp}}}"#);
-            let payload = base64url(json.as_bytes());
-            AuthSession::new("Ann", UUID, &format!("e30.{payload}.sig"))
-        };
-        let now = SystemTime::now()
-            .duration_since(SystemTime::UNIX_EPOCH)
-            .unwrap()
-            .as_secs();
-        assert!(token(now - 10).expired());
-        assert!(
-            token(now + 30).expired(),
-            "a minute from its end: as good as gone"
-        );
-        assert!(!token(now + 3600).expired());
-        assert!(!AuthSession::new("Ann", UUID, "not-a-jwt").expired());
-    }
-
     fn write(dir: &Path, text: &str, mode: u32) -> std::path::PathBuf {
         let path = dir.join("session.json");
         std::fs::write(&path, text).unwrap();
@@ -861,37 +795,6 @@ mod tests {
         .to_string()
     }
 
-    #[test]
-    fn local_accounts_use_their_own_chat_keys() {
-        let pair = |signature: &[u8]| {
-            let mut keys = parse_certificates(&certificates(PRIVATE_B64, PUBLIC_B64)).unwrap();
-            keys.public.expires_at = i64::MAX;
-            keys.refreshed_after = i64::MAX;
-            keys.public.signature = signature.to_vec();
-            Arc::new(keys)
-        };
-        let ann = pair(b"ann");
-        let bea = pair(b"bea");
-        {
-            let mut accounts = CHAT_KEYS.lock().unwrap();
-            for (uuid, keys) in [(101, ann.clone()), (102, bea.clone())] {
-                accounts.insert(
-                    uuid,
-                    ChatKeys {
-                        current: Some(keys),
-                        ..Default::default()
-                    },
-                );
-            }
-        }
-        prepare_chat_keys_for(Arc::new(AuthSession::new("Ann", 101, "unused")), true);
-        assert!(Arc::ptr_eq(&chat_keys_for(101).unwrap(), &ann));
-        assert!(Arc::ptr_eq(&chat_keys_for(102).unwrap(), &bea));
-        assert!(chat_keys_for(103).is_none());
-        CHAT_KEYS.lock().unwrap().remove(&101);
-        CHAT_KEYS.lock().unwrap().remove(&102);
-    }
-
     #[test]
     fn certificates_response() {
         let pair = parse_certificates(&certificates(PRIVATE_B64, PUBLIC_B64)).unwrap();

crates/horizon-client-render/src/biome.rs

@@ -288,7 +288,7 @@ impl Biomes {
             .collect();
         files.sort_by_cached_key(|f| format!("{}.json", f.name));
         for file in files {
-            let v: Value = horizon_world::json_file::parse(&file.path, file.bytes()?)?;
+            let v: Value = serde_json::from_slice(file.bytes()?)?;
             list.push(BiomeInfo::from_json(
                 format!("minecraft:{}", file.name),
                 &v,