cocos2d-x-3.x bringToFront & sendToBack实现

cocos2d-x-3.x bringToFront & sendToBack实现,第1张

概述void Node::bringToFront(void){ auto parent = this->getParent(); if (parent != nullptr && parent->getChildrenCount() >= 2) { auto& siblings = parent->getChildren(); auto last
voID Node::bringToFront(voID){    auto parent = this->getParent();    if (parent != nullptr && parent->getChildrenCount() >= 2) {        auto& siblings = parent->getChildren();        auto last = *siblings.rbegin();        auto topOrderOfArrival = last->getorderOfArrival();        auto topLocalZOrder = last->getLocalZOrder();        for (size_t IDx = siblings.size() - 1; IDx > 0; --IDx)        {            auto sibling = siblings.at(IDx);            if (sibling != this) {                sibling->setorderOfArrival(siblings.at(IDx - 1)->getorderOfArrival());                sibling->_setLocalZOrder(siblings.at(IDx - 1)->getLocalZOrder());            }            else {                break;            }        }        this->setorderOfArrival(topOrderOfArrival);        this->_setLocalZOrder(topLocalZOrder);        std::sort(std::begin(siblings),std::end(siblings),nodeComparisonLess);        _eventdispatcher->setDirtyForNode(this);    }}voID Node::sendToBack(voID){    auto parent = this->getParent();    if (parent != nullptr && parent->getChildrenCount() >= 2) {        auto& siblings = parent->getChildren();        auto start = *siblings.begin();        auto bottomOrderOfArrival = start->getorderOfArrival();        auto bottomLocalZOrder = start->getLocalZOrder();                for (size_t IDx = 0; IDx < siblings.size() - 1; ++IDx)        {            auto c = siblings.at(IDx);            if (c != this) {                c->setorderOfArrival(siblings.at(IDx + 1)->getorderOfArrival());                c->_setLocalZOrder(siblings.at(IDx + 1)->getLocalZOrder());            }            else {                break;            }        }        this->setorderOfArrival(bottomOrderOfArrival);        this->_setLocalZOrder(bottomLocalZOrder);        std::sort(std::begin(siblings),nodeComparisonLess);        _eventdispatcher->setDirtyForNode(this);    }}
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