improve projectiles asset loading

and defining projectile in heads-db

src/loading_assets.rs

@@ -84,12 +84,6 @@ pub struct GameAssets {
     #[asset(path = "models/cash.glb#Scene0")]
     pub mesh_cash: Handle<Scene>,
 
-    #[asset(path = "models/head_misc/molotov_cocktail.glb#Scene0")]
-    pub molotov: Handle<Scene>,
-
-    #[asset(path = "models/head_misc/hammer.glb#Scene0")]
-    pub hammer: Handle<Scene>,
-
     #[asset(path = "models/alien_naked.glb#Scene0")]
     pub mesh_alien: Handle<Scene>,
 
@@ -102,6 +96,9 @@ pub struct GameAssets {
         collection(mapped, typed)
     )]
     pub animations_alien: HashMap<AssetLabel, Handle<AnimationClip>>,
+
+    #[asset(path = "models/projectiles", collection(mapped, typed))]
+    pub projectiles: HashMap<AssetFileName, Handle<Gltf>>,
 }
 
 pub struct LoadingPlugin;