 		public function get mouseY():int { return (FP.stage.mouseY - _y) / (_scaleY * _scale); }
 		
 		// Screen infromation.
+		/** @private */ private var _sprite:Sprite = new Sprite;
 		/** @private */ private var _bitmap:Vector.<Bitmap> = new Vector.<Bitmap>(2);
 		/** @private */ private var _current:int = 0;
 		/** @private */ private var _matrix:Matrix = new Matrix;

			// create screen buffers
			_bitmap[0] = new Bitmap(new BitmapData(FP.width, FP.height, false, 0), PixelSnapping.NEVER);
			_bitmap[1] = new Bitmap(new BitmapData(FP.width, FP.height, false, 0), PixelSnapping.NEVER);
			FP.engine.addChild(_bitmap[0]).visible = true;
			FP.engine.addChild(_bitmap[1]).visible = false;
			FP.buffer = _bitmap[0].bitmapData;
			_width = FP.width;
			_height = FP.height;

	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.PixelSnapping;
	import flash.display.Sprite;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.geom.Transform;
