flash on 2011-2-24

/**
 * Copyright fakestar0826 ( http://wonderfl.net/user/fakestar0826 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/8tK6
 */

package {
    import flash.events.Event;
    import flash.display.Sprite;
    public class FlashTest extends Sprite 
    {
        private var ball:Ball;
        private var spring:Number = 0.3;
        private var targetX:Number = stage.stageWidth / 2;
        private var vx:Number = 0;
        public function FlashTest() 
        {
            // write as3 code here..
            ball = new Ball();
            ball.y = stage.stageHeight / 2;
            addChild(ball);
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        
        private function onEnterFrame(e:Event):void
        {
            var dx:Number = targetX - ball.x;
            var ax:Number = dx * spring;
            vx += ax;
            vx *= 0.95;
            ball.x += vx;
        }

    }
}
import flash.display.Sprite;

class Ball extends Sprite
{
    public function Ball()
    {
        graphics.beginFill(0xFF0000);
        graphics.drawCircle(0, 0, 30);
        graphics.endFill();
    }

}