v3.3.0: removed deadlock-causing sync checks

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/GameScene.java

@@ -1029,21 +1029,24 @@ public class GameScene extends PixelScene {
 		customWalls.add( visual.create() );
 	}
 
-	private synchronized void addHeapSprite( Heap heap ) {
+	//FIXME added a sync check here in v3.2.5, which caused deadlocks
+	// what I really need to do is have these queue additions that then happen on render thread
+	// this can also apply to adding mob sprites
+	private void addHeapSprite( Heap heap ) {
 		ItemSprite sprite = heap.sprite = (ItemSprite)heaps.recycle( ItemSprite.class );
 		sprite.revive();
 		sprite.link( heap );
 		heaps.add( sprite );
 	}
 	
-	private synchronized void addDiscardedSprite( Heap heap ) {
+	private void addDiscardedSprite( Heap heap ) {
 		heap.sprite = (DiscardedItemSprite)heaps.recycle( DiscardedItemSprite.class );
 		heap.sprite.revive();
 		heap.sprite.link( heap );
 		heaps.add( heap.sprite );
 	}
 	
-	private synchronized void addBlobSprite( final Blob gas ) {
+	private void addBlobSprite( final Blob gas ) {
 		if (gas.emitter == null) {
 			gases.add( new BlobEmitter( gas ) );
 		}