BBGamelib.flash.imp.Movie.removeUnusedPlaceobjs C# (CSharp) Method

		void removeUnusedPlaceobjs(FrameObject frameObj){
//			foreach(int removeObjDepth in frameObj.removedObjectDepths){
//				DisplayObject displayObj = _depth_displays[removeObjDepth];
//				if(displayObj!=null){
//					recycleDisplayCache(removeObjDepth, displayObj);
//				}
//				_depth_displays[removeObjDepth] = null;
//			}

			
			bool[] modified = new bool[_depth_displays.Length];
			for(int i=modified.Length - 1; i>=0; i--)
				modified[i] = false;

//			frameObj.reset();
//			for(int i=0; i<frameObj.placeObjectCount; i++){
//				PlaceObject placeObj = frameObj.nextPlaceObject();
			for(int i=0; i<frameObj.placeObjects.Length; i++){
				PlaceObject placeObj = frameObj.placeObjects[i];
				modified[placeObj.depth] = true;			
			}

			for(int i=modified.Length-1; i>=0; i--){
				if(!modified[i]){
					DisplayObject displayObj = _depth_displays[i];
					if(displayObj!=null){
						recycleDisplayCache(i, displayObj);
					}
					_depth_displays[i] = null;
				}
			}
		}