faster asteroid loading... maybe

src/world.rs

@@ -70,6 +70,8 @@ impl Plugin for WorldPlugin {
 #[derive(Resource)] struct AsteroidUpdateTimer(Timer);
 #[derive(Resource)] struct AsteroidDatabase(Vec<AsteroidData>);
 #[derive(Resource)] struct ActiveAsteroids(HashMap<I64Vec3, AsteroidData>);
+#[derive(Resource)] struct AsteroidModel1(Handle<Scene>);
+#[derive(Resource)] struct AsteroidModel2(Handle<Scene>);
 
 #[derive(Component)] struct Asteroid;
 #[derive(Component)] pub struct DespawnOnPlayerDeath;
@@ -112,7 +114,12 @@ pub fn setup(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
     mut materials_custom: ResMut<Assets<RingMaterial>>,
+    asset_server: Res<AssetServer>,
 ) {
+    // Load assets
+    commands.insert_resource(AsteroidModel1(asset_server.load(ASSET_ASTEROID1)));
+    commands.insert_resource(AsteroidModel2(asset_server.load(ASSET_ASTEROID2)));
+
     // Generate starmap
     let sphere_handle = meshes.add(Sphere::new(1.0));
     let mut starcount = 0;
@@ -186,7 +193,8 @@ fn spawn_despawn_asteroids(
     q_player: Query<&Position, With<actor::PlayerCamera>>,
     mut ew_despawn: EventWriter<DespawnEvent>,
     mut db: ResMut<ActiveAsteroids>,
-    asset_server: Res<AssetServer>,
+    asteroid1_handle: Res<AsteroidModel1>,
+    asteroid2_handle: Res<AsteroidModel2>,
     mut q_asteroid: Query<(Entity, &SceneInstance), With<Asteroid>>,
     mut last_player_cell: Local<I64Vec3>,
 ) {
@@ -316,12 +324,12 @@ fn spawn_despawn_asteroids(
                     Position::new(pos),
                     Asteroid,
                 ));
-                let asset = match class {
-                    0 => ASSET_ASTEROID1,
-                    _ => ASSET_ASTEROID2,
+                let model = match class {
+                    0 => asteroid1_handle.0.clone(),
+                    _ => asteroid2_handle.0.clone(),
                 };
                 entity_commands.insert(SceneBundle {
-                    scene: asset_server.load(asset),
+                    scene: model,
                     transform: Transform {
                         scale: Vec3::splat(size),
                         ..default()