cocos2d-x 3.9 init()函数

cocos2d-x 3.2版

// add the sprite as a child to this layerbool HiHuasonScene::init(){this->addChild(sprite);}

在3.9版本会出错，应该改成：
// add the sprite as a child to this layer
bool HiHuasonScene::init()
{
this->addChild(sprite,0);
}