flash on 2015-3-14

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/2Z7K
 */

package {
    import flash.events.Event;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {

          stage.addEventListener(Event.ENTER_FRAME, onEnter);            
        }//ctor
        
        public var ang:Number = 0;
        public var cx:Number = 0;
        public var cy:Number = 0;
        public var vx:Number = 0;
        
        public function onEnter(e:Event):void
        {
            graphics.clear();
            graphics.lineStyle(2, 0);
            
            var px:Number;
            px = cx;
            
            vx*=0.95;
            if (vx<=0.2) {vx+=4;}
            
            cx+= vx;
            if (cx >= 400) {cx= 0;}
            
            var r:Number;
            r = 32;
            
            if (vx != 0)
            {
             ang += (vx/r)*3.1415;
            }
            
            cy = 120;
            graphics.drawCircle(cx, cy, r);
            //graphics.moveTo(cx,cy);
            graphics.moveTo(cx-Math.cos(ang)*r, cy-Math.sin(ang)*r);
            graphics.lineTo(cx+Math.cos(ang)*r, cy+Math.sin(ang)*r);
            
        }//onenter
        
    }//classend
}