cocos2dx-把触点坐标转换成TieldMap坐标
cocos2d::CCPoint HelloWorld::covertPointToTiledCoord(cocos2d::CCPoint p){int x = p.x / mMap->getTileSize().width;int y = ((mMap->getMapSize().height * mMap->getTileSize().height) - p.y) / mMap->getTileSize().height;return ccp(x, y);}