:sparkles: entities are now cleaned up at end of logo state

src/game_state/logo.rs

@@ -17,6 +17,9 @@ struct LogoFader {
     time: Stopwatch,
 }
 
+#[derive(Component)]
+struct LogoMarker;
+
 // Logo should take 10 seconds
 const LOGO_DURATION: f32 = 10.0;
 
@@ -35,6 +38,7 @@ fn setup_logo(
     commands
         .spawn()
         .insert(Logo { path: path.clone() })
+        .insert(LogoMarker)
         .insert_bundle(SpriteBundle {
             texture: assert_server.load(&path),
             transform: Transform {
@@ -47,6 +51,7 @@ fn setup_logo(
     commands
         .spawn()
         .insert(LogoFader { time: Stopwatch::new() })
+        .insert(LogoMarker)
         .insert_bundle(SpriteBundle {
             sprite: Sprite {
                 color: Color::rgba(0.0, 0.0, 0.0, 0.0),
@@ -61,6 +66,15 @@ fn setup_logo(
         });
 }
 
+fn teardown_logo(
+    mut commands: Commands,
+    query: Query<Entity, With<LogoMarker>>,
+) {
+    for entity in query.iter() {
+        commands.entity(entity).despawn();
+    }
+}
+
 fn resize_logo(
     mut query: Query<(&mut Transform, &Logo)>,
     windows: Res<Windows>,
@@ -129,5 +143,6 @@ impl Plugin for LogoPlugin {
             .with_system(animate_logo)
             .with_system(resize_fader)
         );
+        app.add_system_set(SystemSet::on_exit(state).with_system(teardown_logo));
     }
 }