flash on 2016-7-31

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/sdr2
 */

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 mhold:int = 0;
        public var cx:Number = 230;        public var cy:Number = 230;  
        public var gx:Number = 230;        public var gy:Number = 230;
        
        public function getMag(ax:Number, ay:Number):Number
        { return Math.sqrt(ax*ax+ay*ay); }
        
        public var rx:Number = 120;
        public var ry:Number = 120;
        
        public var state:int = 0;
        
        public function onEnter(e:Event):void
        {
          graphics.clear();
          graphics.lineStyle(2, 0);
          
          graphics.drawCircle(cx,cy, 8);  
          graphics.drawCircle(rx,ry, 8);

          if (mbutton > 0) { mhold +=1; }
          else { mhold = 0; }

          if (state > 0)         
          {
            graphics.beginFill(0, 0.5);
             graphics.drawRect(0,0,465,465);
            graphics.endFill();
            graphics.beginFill(0xFFffFF,1);
             graphics.drawRect(64,64, 256,128);
            graphics.endFill();   
            if (mhold == 1) { state = 0;  }
            return;
          }//endif

     
          var mx:Number; var my:Number;
          mx = stage.mouseX; my = stage.mouseY;  


          if (getMag(rx-mx, ry-my)<32) 
          { graphics.drawCircle(rx,ry,16);
            if (mhold == 1) { state = 1; mhold = 2; }   
          }
            
            
          if (mhold == 1) { gx =mx; gy =my; }  
            
          var ta:Number; var ms:Number;
          ms = 4; var d:Number;
          d = getMag(gx-cx, gy-cy);
          if (d < 1) { d = 0; }
          if ( d <ms) { ms = d ;} else { graphics.drawCircle(gx,gy,4); }
          ta = Math.atan2(gy-cy, gx-cx);
          cx += Math.cos(ta) * ms;
          cy += Math.sin(ta) * ms;  
            
        }//onenter
        
    }//classend
}