anchor.diff:  	resourceManager.addBitmapData('newButton', 'assets/images/new-button.png');
   	resourceManager.load().then((_)
   	{
  +		
   		BitmapData tankData = resourceManager.getBitmapData('tank');
   		Bitmap tank = new Bitmap(tankData);
   		stage.addChild(tank);
  
positive.code: 	return ball;
  }
  
  void saveGame()
  {
  	var memento = {};
  	var ballObjects = [];
  	int index = 0;
  	balls.forEach((Sprite ball)
  	{
  		ballObjects.add({"x": ball.x, "y": ball.y});
  	});
  	memento["balls"] = ballObjects;
  	window.localStorage["saveGame"] = JSON.encode(memento);
  }
  
  
negative.code: 			makeNewBall();
  		});
  		
  		makerSquare = new Sprite();
  		makerSquare.graphics.rect(0, 0, 40, 40);
  		makerSquare.graphics.fillColor(Color.Blue);
  		makerSquare.graphics.strokeColor(Color.Black, 1);
  		makerSquare.alpha = 0.9;
  		makerSquare.x = 560;
  		makerSquare.y = 20;
  		stage.addChild(makerSquare);
  		makerSquare.onMouseClick.listen((_)
  		{
  			makeNewSquare();
  		});
  		
  		saveButton = new Sprite();
  		saveButton.addChild(new Bitmap(resourceManager.getBitmapData('saveButton')));
  		saveButton.x = makerBall.x - (saveButton.width + 20);
  