flash on 2009-12-31

/**
 * Copyright _wonder ( http://wonderfl.net/user/_wonder )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/8X0V
 */

package {
    import flash.display.*;
    import flash.events.Event;
    
    [SWF(frameRate="30",width="465",height="465")]
    public class MyFirstAnimation extends Sprite {
        private var _circle:Circle;
        public function MyFirstAnimation() {
            _circle = new Circle(10);
            _circle.alpha = 0.25
            _circle.vx = 3;
            _circle.vy = 4;
            
            _circle.x = 465 / 2;
            _circle.y = 465 / 2;
            
            addChild(_circle);
            
            addEventListener(Event.ENTER_FRAME, enterFrameHandler);
        }
        
        private function enterFrameHandler(e:Event):void{
            _circle.move();
        }
    }
}

import flash.display.Sprite;

class Circle extends Sprite{
    public var vx:Number;
    public var vy:Number;
    public var radius:Number;
    
    public function Circle(_radius:Number,_fillColor:uint = 0x000000){
        graphics.beginFill(_fillColor);
        graphics.drawCircle(0,0,_radius);
        graphics.endFill();
        radius = _radius;    
    }
    
    public function move():void{
        x += vx;
        y += vy;
    }
}