import com.greensock.*;
import flash.events.MouseEvent;
import flash.events.Event;
import flash.geom.Point;

var wallz:Rectangle = wall.getBounds(this);
var wallzData = new BitmapData(wallz.width, wallz.height, true, 0);
wallzData.draw(wall);
   
var fishz:Rectangle = fish.getBounds(this);
var fishzData = new BitmapData(fishz.width, fishz.height, true, 0);
fishzData.draw(fish);

var old:Point = new Point(fish.x, fish.y);

fish.addEventListener(MouseEvent.MOUSE_DOWN, onDown);

this.addEventListener(Event.ENTER_FRAME, enterFrameListener);

function enterFrameListener(e:Event):void
{
  if(wallzData.hitTest(new Point(wall.x, wall.y),
                    255,
                    fishzData,
                    new Point(fish.x, fish.y),
                    255
   
                           ))
     {
   fish.x = old.x;
   fish.y = old.y;
   TweenMax.killTweensOf(fish);
  }
  else
  {
   old.x = fish.x;
   old.y = fish.y;
  }
}

function onDown(e:MouseEvent):void
{
  stage.addEventListener(MouseEvent.MOUSE_UP, onUp);
  stage.addEventListener(MouseEvent.MOUSE_MOVE, update);
}

function update(e:Event):void
{
  TweenMax.to(fish, 2 ,{x :mouseX, y: mouseY});
}

function onUp(e:MouseEvent):void
{
  stage.removeEventListener(MouseEvent.MOUSE_UP, onUp);
  stage.removeEventListener(MouseEvent.MOUSE_MOVE, update);
}