fix debug asset server code

Author: hymm

crates/bevy_asset/src/assets.rs

@@ -312,8 +312,10 @@ impl AddAsset for App {
             let mut app = self
                 .world
                 .non_send_resource_mut::<crate::debug_asset_server::DebugAssetApp>();
-            app.add_asset::<T>()
-                .init_resource::<crate::debug_asset_server::HandleMap<T>>();
+            app.get_mut(|app| {
+                app.add_asset::<T>()
+                    .init_resource::<crate::debug_asset_server::HandleMap<T>>();
+            });
         }
         self
     }
@@ -335,7 +337,9 @@ impl AddAsset for App {
             let mut app = self
                 .world
                 .non_send_resource_mut::<crate::debug_asset_server::DebugAssetApp>();
-            app.init_asset_loader::<T>();
+            app.get_mut(|app| {
+                app.init_asset_loader::<T>();
+            });
         }
         self
     }

crates/bevy_asset/src/debug_asset_server.rs

@@ -77,31 +77,35 @@ impl Plugin for DebugAssetServerPlugin {
 }
 
 fn run_debug_asset_app(mut debug_asset_app: NonSendMut<DebugAssetApp>) {
-    debug_asset_app.0.update();
+    debug_asset_app.get_mut(|debug_asset_app| {
+        debug_asset_app.0.update();
+    });
 }
 
 pub(crate) fn sync_debug_assets<T: Asset + Clone>(
     mut debug_asset_app: NonSendMut<DebugAssetApp>,
     mut assets: ResMut<Assets<T>>,
 ) {
-    let world = &mut debug_asset_app.0.world;
-    let mut state = SystemState::<(
-        Res<Events<AssetEvent<T>>>,
-        Res<HandleMap<T>>,
-        Res<Assets<T>>,
-    )>::new(world);
-    let (changed_shaders, handle_map, debug_assets) = state.get_mut(world);
-    for changed in changed_shaders.iter_current_update_events() {
-        let debug_handle = match changed {
-            AssetEvent::Created { handle } | AssetEvent::Modified { handle } => handle,
-            AssetEvent::Removed { .. } => continue,
-        };
-        if let Some(handle) = handle_map.handles.get(debug_handle) {
-            if let Some(debug_asset) = debug_assets.get(debug_handle) {
-                assets.set_untracked(handle, debug_asset.clone());
+    debug_asset_app.get_mut(|debug_asset_app| {
+        let world = &mut debug_asset_app.0.world;
+        let mut state = SystemState::<(
+            Res<Events<AssetEvent<T>>>,
+            Res<HandleMap<T>>,
+            Res<Assets<T>>,
+        )>::new(world);
+        let (changed_shaders, handle_map, debug_assets) = state.get_mut(world);
+        for changed in changed_shaders.iter_current_update_events() {
+            let debug_handle = match changed {
+                AssetEvent::Created { handle } | AssetEvent::Modified { handle } => handle,
+                AssetEvent::Removed { .. } => continue,
+            };
+            if let Some(handle) = handle_map.handles.get(debug_handle) {
+                if let Some(debug_asset) = debug_assets.get(debug_handle) {
+                    assets.set_untracked(handle, debug_asset.clone());
+                }
             }
         }
-    }
+    });
 }
 
 /// Uses the return type of the given loader to register the given handle with the appropriate type