use asset server for impact atlas

src/loading_assets.rs

@@ -38,6 +38,12 @@ pub struct UIAssets {
     pub camera: Handle<Image>,
 }
 
+#[derive(AssetCollection, Resource)]
+pub struct GameAssets {
+    #[asset(path = "textures/fx/impact.png")]
+    pub impact_atlas: Handle<Image>,
+}
+
 pub struct LoadingPlugin;
 impl Plugin for LoadingPlugin {
     fn build(&self, app: &mut App) {
@@ -45,6 +51,7 @@ impl Plugin for LoadingPlugin {
             LoadingState::new(GameState::AssetLoading)
                 .continue_to_state(GameState::MapLoading)
                 .load_collection::<AudioAssets>()
+                .load_collection::<GameAssets>()
                 .load_collection::<UIAssets>(),
         );
     }