update for mandatory component derive

crates/bevy_scene/src/bundle.rs

@@ -1,29 +1,39 @@
 use bevy_asset::Handle;
 use bevy_ecs::{
-    bundle::Bundle, change_detection::ResMut, entity::Entity, prelude::Changed, system::Query,
+    bundle::Bundle,
+    change_detection::ResMut,
+    entity::Entity,
+    prelude::{Changed, Component},
+    system::Query,
 };
 use bevy_transform::components::{GlobalTransform, Transform};
 
 use crate::{DynamicScene, InstanceId, Scene, SceneSpawner};
 
+#[derive(Default, Component)]
+pub struct HasSceneInstance(Option<InstanceId>);
+
 #[derive(Default, Bundle)]
 pub struct SceneBundle {
     pub scene: Handle<Scene>,
-    pub instance_id: Option<InstanceId>,
+    pub instance_id: HasSceneInstance,
     pub transform: Transform,
     pub global_transform: GlobalTransform,
 }
 
 #[allow(clippy::type_complexity)]
 pub fn scene_bundle_spawner(
     mut scene_to_spawn: Query<
-        (Entity, &Handle<Scene>, &mut Option<InstanceId>),
+        (Entity, &Handle<Scene>, &mut HasSceneInstance),
         Changed<Handle<Scene>>,
     >,
     mut scene_spawner: ResMut<SceneSpawner>,
 ) {
     for (entity, scene, mut instance) in scene_to_spawn.iter_mut() {
-        if let Some(id) = instance.replace(scene_spawner.spawn_as_child(scene.clone(), entity)) {
+        if let Some(id) = instance
+            .0
+            .replace(scene_spawner.spawn_as_child(scene.clone(), entity))
+        {
             scene_spawner.despawn_instance(id);
         }
     }
@@ -32,22 +42,23 @@ pub fn scene_bundle_spawner(
 #[derive(Default, Bundle)]
 pub struct DynamicSceneBundle {
     pub scene: Handle<DynamicScene>,
-    pub instance_id: Option<InstanceId>,
+    pub instance_id: HasSceneInstance,
     pub transform: Transform,
     pub global_transform: GlobalTransform,
 }
 
 #[allow(clippy::type_complexity)]
 pub fn dynamic_scene_bundle_spawner(
     mut dynamic_scene_to_spawn: Query<
-        (Entity, &Handle<DynamicScene>, &mut Option<InstanceId>),
+        (Entity, &Handle<DynamicScene>, &mut HasSceneInstance),
         Changed<Handle<DynamicScene>>,
     >,
     mut scene_spawner: ResMut<SceneSpawner>,
 ) {
     for (entity, dynamic_scene, mut instance) in dynamic_scene_to_spawn.iter_mut() {
-        if let Some(id) =
-            instance.replace(scene_spawner.spawn_dynamic_as_child(dynamic_scene.clone(), entity))
+        if let Some(id) = instance
+            .0
+            .replace(scene_spawner.spawn_dynamic_as_child(dynamic_scene.clone(), entity))
         {
             scene_spawner.despawn_instance(id);
         }

examples/game/alien_cake_addict.rs

@@ -342,7 +342,6 @@ fn spawn_bonus(
                     transform: Transform::from_xyz(0.0, 2.0, 0.0),
                     ..Default::default()
                 });
-                children.spawn_scene(game.bonus.handle.clone());
             })
             .id(),
     );