flash on 2011-5-7

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

package{
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class RotateToMouse extends Sprite {
        private var arrow:Arrow;
        
        public function RotateToMouse()    {
            init();
        }
        private function init():void {
            arrow = new Arrow();
            addChild(arrow);
            arrow.x = stage.stageWidth / 2;
            arrow.y = stage.stageHeight / 2;
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        public function onEnterFrame(event:Event):void {
            var dx:Number = mouseX - arrow.x;
            var dy:Number = mouseY - arrow.y;
            var radians:Number = Math.atan2(dy, dx);
            arrow.rotation = radians * 180 / Math.PI;
        }
    }
}



import flash.display.Sprite;
    
class Arrow extends Sprite {
        public function Arrow() {
            init();
        }
        public function init():void {
            graphics.lineStyle(1, 0, 1);
            graphics.beginFill(0xffff00);
            graphics.moveTo(-50, -25);
            graphics.lineTo(0, -25);
            graphics.lineTo(0, -50);
            graphics.lineTo(50, 0);
            graphics.lineTo(0, 50);
            graphics.lineTo(0, 25);
            graphics.lineTo(-50, 25);
            graphics.lineTo(-50, -25);
            graphics.endFill();
        }
    }