Adjust tilemap example

Author: KirmesBude

examples/2d/tilemap_chunk.rs

@@ -1,17 +1,20 @@
 //! Shows a tilemap chunk rendered with a single draw call.
 
+use core::num::NonZero;
+
 use bevy::{
     prelude::*,
     sprite::{TileData, TilemapChunk, TilemapChunkTileData},
 };
+use bevy_image::ImageLoaderSettings;
 use rand::{Rng, SeedableRng};
 use rand_chacha::ChaCha8Rng;
 
 fn main() {
     App::new()
         .add_plugins(DefaultPlugins.set(ImagePlugin::default_nearest()))
         .add_systems(Startup, setup)
-        .add_systems(Update, (update_tileset_image, update_tilemap))
+        .add_systems(Update, update_tilemap)
         .run();
 }
 
@@ -39,12 +42,18 @@ fn setup(mut commands: Commands, assets: Res<AssetServer>) {
         })
         .collect();
 
+    let layers = 4;
     commands.spawn((
         TilemapChunk {
             chunk_size,
             tile_display_size,
-            tileset: assets.load("textures/array_texture.png"),
-            ..default()
+            tileset: assets.load_with_settings(
+                "textures/array_texture.png",
+                move |settings: &mut ImageLoaderSettings| {
+                    settings.layers = NonZero::new(layers);
+                },
+            ),
+            ..Default::default()
         },
         TilemapChunkTileData(tile_data),
         UpdateTimer(Timer::from_seconds(0.1, TimerMode::Repeating)),
@@ -55,20 +64,6 @@ fn setup(mut commands: Commands, assets: Res<AssetServer>) {
     commands.insert_resource(SeededRng(rng));
 }
 
-fn update_tileset_image(
-    chunk_query: Single<&TilemapChunk>,
-    mut events: EventReader<AssetEvent<Image>>,
-    mut images: ResMut<Assets<Image>>,
-) {
-    let chunk = *chunk_query;
-    for event in events.read() {
-        if event.is_loaded_with_dependencies(chunk.tileset.id()) {
-            let image = images.get_mut(&chunk.tileset).unwrap();
-            image.reinterpret_stacked_2d_as_array(4);
-        }
-    }
-}
-
 fn update_tilemap(
     time: Res<Time>,
     mut query: Query<(&mut TilemapChunkTileData, &mut UpdateTimer)>,