core: Collect GC debt at the end of each frame

core/src/button.rs

@@ -249,6 +249,7 @@ unsafe impl<'gc> gc_arena::Collect for Button<'gc> {
                 child.trace(cc);
             }
         }
+        self.static_data.trace(cc);
     }
 }
 

core/src/character.rs

@@ -8,3 +8,19 @@ pub enum Character<'gc> {
     Text(Box<crate::text::Text<'gc>>),
     Sound(crate::backend::audio::SoundHandle),
 }
+
+unsafe impl<'gc> gc_arena::Collect for Character<'gc> {
+    #[inline]
+    fn trace(&self, cc: gc_arena::CollectionContext) {
+        match self {
+            Character::Graphic(c) => c.trace(cc),
+            Character::MovieClip(c) => c.trace(cc),
+            Character::Bitmap(c) => c.trace(cc),
+            Character::Button(c) => c.trace(cc),
+            Character::Font(c) => c.trace(cc),
+            Character::MorphShape(c) => c.trace(cc),
+            Character::Text(c) => c.trace(cc),
+            Character::Sound(c) => c.trace(cc),
+        }
+    }
+}

core/src/graphic.rs

@@ -64,9 +64,8 @@ impl<'gc> DisplayObject<'gc> for Graphic<'gc> {
 }
 
 unsafe impl<'gc> gc_arena::Collect for Graphic<'gc> {
-    #[inline]
-    fn needs_trace() -> bool {
-        false
+    fn trace(&self, cc: gc_arena::CollectionContext) {
+        self.static_data.trace(cc);
     }
 }
 

core/src/movie_clip.rs

@@ -438,6 +438,7 @@ unsafe impl<'gc> gc_arena::Collect for MovieClip<'gc> {
         for child in self.children.values() {
             child.trace(cc);
         }
+        self.static_data.trace(cc);
     }
 }
 

core/src/player.rs

@@ -366,6 +366,9 @@ impl<Audio: AudioBackend, Renderer: RenderBackend> Player<Audio, Renderer> {
 
         // Update mouse state (check for new hovered button, etc.)
         self.update_roll_over();
+
+        // GC
+        self.gc_arena.collect_all();
     }
 
     pub fn render(&mut self) {