title: A sprite bounding box shows wrong position after moving the layer
body: <p>I have just started to learn some cocos2d and this issue had bothered me for quite a while. Basically what i am trying to do is to move a sprite in a layer by checking whether the touch landed on the sprite bounding box using <code>ccTouchBegan</code> and <code>ccTouchMoved</code>.</p>
  
  <p>Everything worked until I moved the layer, which include many other sprite and is also lager than the screen size. After I moved the layer the sprite's bounding box is at a different position as where the sprite image shows. Had anyone experienced similar issue before?</p>