flash on 2013-5-30

/**
 * Copyright sebastienk ( http://wonderfl.net/user/sebastienk )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/oCWj
 */

package {
    import flash.display.Shape;
    import flash.display.Sprite;
    import flash.events.Event;
      
    public class FlashTest extends Sprite {
        private var square:Shape;
        public function FlashTest() {
            square = new Shape();
            square.graphics.beginFill(0x00FFFF, 1);
            square.graphics.drawRect(50, 50, 50, 50);
            square.graphics.endFill();
            addChild(square);
      
            addEventListener(Event.ENTER_FRAME, onEnterFrame, false, 0, true);
        }
        
        private function onEnterFrame(event:Event):void
        {
            square.y -= 5;
            if(stage)
            {
                if(square.y <= 0)
                {
                    square.y = stage.stageHeight;
                }
            }
        }

    }
}