flash on 2009-7-8

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

   package {  
        import flash.display.Sprite;  
      
        public class Ball extends Sprite {  
            public var radius:Number;  
            private var color:uint;  
            public var vx:Number = 0;  
            public var vy:Number = 0;  
      
           public function Ball(radius:Number=40, color:uint=0xff0000) {  
               this.radius = radius;  
               this.color = color;  
               init();  
           }  
           public function init():void {  
               graphics.beginFill(color);  
               graphics.drawCircle(0, 0, radius);  
               graphics.endFill();  
           }  
    }  
   }