flash on 2016-10-29

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/6JDX
 */

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

            stage.addEventListener(MouseEvent.MOUSE_DOWN, onMdown);
            stage.addEventListener(MouseEvent.MOUSE_UP, onMup);
            stage.addEventListener(Event.ENTER_FRAME, onEnter);            
        }//ctor
        
        public function onMdown(e:MouseEvent):void { mbutton = 1; }
        public function onMup(e:MouseEvent):void { mbutton = 0; }
        
        
        public var mbutton:int = 0;
        
        public var cx:Number = 230;
        public var cy:Number = 230;
        public var ang:Number = 0;
        
        public var gx:Number = 230;
        public var gy:Number = 230;
        public var vx:Number = 0;
        public var vy: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);
            
            
            graphics.drawCircle(cx,cy, 8);
            graphics.moveTo(cx, cy);
            graphics.lineTo(cx+Math.cos(ang)*8, cy+Math.sin(ang)*8);
            
            var mx:Number; var my:Number;
            mx = stage.mouseX;
            my = stage.mouseY;
            
            ang = Math.atan2(my-cy, mx-cx);
            if (mbutton > 0)
            {
              cx+= Math.cos(ang)*3;
              cy+= Math.sin(ang)*3;   
            }
            
            var ms:Number; ms =32;
            if (mbutton > 0) { ms = 128; }
            var ax:Number; var ay:Number;
            ax = cx+Math.cos(ang)*ms;
            ay = cy+Math.sin(ang)*ms;
            
            graphics.drawCircle(ax,ay, 4);
            
            var d:Number;
            d = getMag(ax-gx,ay-gy);
                         
                         
            vx += (ax-gx)*0.03;
            vy += (ay-gy)*0.03;              
            vx*=0.91; vy*=0.91;             
          //  vx*=0.85; vy*=0.85;             
            gx+=vx; gy+=vy;
            
            gx += (ax-gx)*0.15;
            gy += (ay-gy)*0.15;
            
            graphics.drawCircle(gx,gy, 8);

            
            
            
        }//onenter
        
    }//classend
}