Native mods: a server player's game mode

A shop must refuse a player in creative mode, who can make any item.

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

crates/horizon-client/src/game/native_server.rs

@@ -24,6 +24,8 @@ pub(crate) struct NativeServerPlayer {
     /// `minecraft:overworld`, `minecraft:the_nether`, `minecraft:the_end`.
     pub(crate) dimension: String,
     pub(crate) position: [f64; 3],
+    /// 0 survival, 1 creative, 2 adventure, 3 spectator.
+    pub(crate) game_mode: i32,
 }
 
 /// A command a native mod adds, as one usage: words, then arguments
@@ -245,6 +247,7 @@ impl Game<'_> {
                 permission: g.permission,
                 dimension: g.dimension.clone(),
                 position: g.position,
+                game_mode: g.game_mode,
             })
             .collect()
     }
@@ -343,6 +346,7 @@ impl Game<'_> {
             permission,
             dimension: g.dimension.clone(),
             position: g.position,
+            game_mode: g.game_mode,
         };
         let mut ran = false;
         self.native_perform_command(&player, line, &mut ran);

docs/native-mods.md

@@ -192,7 +192,7 @@ For mods that run where the world is simulated: a dedicated server, a LAN host,
   their level allows it, whether the world allows commands or not. The mod parses the line and sets `ran`. The
   player's state is swapped in for the call, as for their other actions, so `native_player` reads them; a
   registered command no mod takes answers as vanilla's unknown command.
-- Helpers: `native_server_players()` (uuid, name, level, dimension, position of each player on);
+- Helpers: `native_server_players()` (uuid, name, level, dimension, position and game mode of each player on);
   `native_tell(uuid, text)`, a system line to one player; `native_broadcast(text)`, to every player and the server's
   log; `native_feedback(text)`, the command's answer to the player whose command it is; `native_world_dir()`, the
   open world's folder, where a server mod keeps its data in a folder of its own so the world's backups carry it.