flash on 2014-11-19

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

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 = 0;
        public var cy:Number = 0;
        public var vx:Number = 0;
        public var vy:Number = 0;
        public var ang:Number = 0;
        
        public function getMag(ax:Number, ay:Number):Number 
        { return Math.sqrt(ax*ax+ay*ay); }
        
        public function onEnter(e:Event):void
        {
            graphics.clear();
            graphics.lineStyle(2,0);
            
            var mx:Number; var my:Number;
            mx = stage.mouseX;
            my = stage.mouseY;
            
            graphics.drawCircle(mx,my, 8);
         
            var d:Number;
            var rest:Number; var t:Number;
            rest = 40; t = 0.02;
        
            ang = Math.atan2(my-cy, mx-cx);
            d = getMag(cx-mx,cy-my);
            
           // vy +=0.1;
              
            vx += Math.cos(ang)*t *(d-rest);
            vy += Math.sin(ang)*t *(d-rest);
            vx *= 0.94; vy *=0.94;
            
            var ms:Number = 8;
            if (vx > ms) {vx=ms;}else if (vx<-ms) {vx=-ms;}
            if (vy >ms) {vy = ms;} else if (vy < -ms) {vy=-ms;}
            
            if (d > 140) 
            {
                //cx+=(mx-cx)*0.1;cy+=(my-cy)*0.1;
                cx += Math.cos(ang)*0.2 *(d-rest);
                cy += Math.sin(ang)*0.2 *(d-rest);
            }//endif
            
            
            cx+=vx;
            cy+=vy;
            
            graphics.drawCircle(cx,cy,8);

            graphics.moveTo(mx,my);
            graphics.lineTo(mx+Math.cos(ang)*-16,my+Math.sin(ang)*-16);            
            
        }//onenter
        
    }//classend
}