cocos2d-x addChild()와 onEnter()

CCNode의 addChild()를 살펴보면

void CCNode::addChild(CCNode *child, int zOrder, int tag)

{    

    CCAssert( child != NULL, "Argument must be non-nil");

    CCAssert( child->m_pParent == NULL, "child already added. It can't be added again");

    if( ! m_pChildren )

    {

        this->childrenAlloc();

    }

    this->insertChild(child, zOrder);

    child->m_nTag = tag;

    child->setParent(this);

    child->setOrderOfArrival(s_globalOrderOfArrival++);

    if( m_bIsRunning )

    {

        child->onEnter();

        child->onEnterTransitionDidFinish();

    }

}

child노드의 onEnter()를 호출한다.