healing particle effect

src/main.rs

@@ -14,6 +14,7 @@ mod head;
 mod head_drop;
 mod heads;
 mod heads_database;
+mod heal_effect;
 mod hitpoints;
 mod keys;
 mod loading_assets;
@@ -165,6 +166,7 @@ fn main() {
     app.add_plugins(water::plugin);
     app.add_plugins(head_drop::plugin);
     app.add_plugins(trail::plugin);
+    app.add_plugins(heal_effect::plugin);
 
     app.init_state::<GameState>();