flash on 2016-2-25

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

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 cx:Number = 230;
        public var cy:Number = 230;
        public var vx:Number = 0;
        public var vy:Number = 0;
        
        public function onEnter(e:Event):void
        {
            var tx:Number; var ty:Number;
            var mx:Number; var my:Number;
            mx = stage.mouseX; my = stage.mouseY;
            
            graphics.clear();
            graphics.lineStyle(2, 0);
            
            graphics.drawCircle(mx, my, 8);
            
            tx = 100; ty =230;
            graphics.drawCircle(tx,ty,8);
            
            
            graphics.drawCircle(cx,cy,8);
            
            
            var ms:Number;        var ta:Number;
            var d:Number;    var rad:Number;
            var ax:Number; var ay:Number;

            rad = 128;
            graphics.drawCircle(mx,my, rad);

            d = getMag(mx-cx,my-cy);
            
            ax=mx;ay=my;
            if (d < rad) 
            {   d = getMag(mx-tx,my-ty);
                if (d<rad) {  ax=tx;ay=ty; }
            }

            d = getMag(ax-cx,ay-cy);
            if (d <32) {d=0;}
            ms = d > 8 ? 8 : d;
            
            ta = Math.atan2(ay-cy, ax-cx);
            vx = Math.cos(ta) * ms;
            vy = Math.sin(ta) * ms;
            cx+=vx; cy+=vy;
            
            
            
         }//onenter
        
        
        public function getMag(ax:Number, ay:Number):Number
        { return Math.sqrt(ax*ax+ay*ay); }
        
        
    }//classend
}