cocos2dx 利用CCOrbitCamera实现扑克牌翻牌效果

【注意】CCSpriteBatchNode不支持CCOrbitCamera动画。如果不需要用到CCSpriteBatchNode的话可以用下面这种方式：

#include "HelloWorldScene.h"#include "SimpleAudioEngine.h"using namespace cocos2d;using namespace CocosDenshion;CCScene* HelloWorld::scene(){    CCScene *scene = CCScene::create();    HelloWorld *layer = HelloWorld::create();    scene->addChild(layer);    return scene;}bool HelloWorld::init(){    if ( !CCLayer::init() )    {        return false;    }    size = CCDirector::sharedDirector()->getWinSize();        //加一背景    CCLayerColor* background = CCLayerColor::create(ccc4(255, 180, 255, 255), size.width, size.height);    this->addChild(background);        actionIsDone = true;//标示动作是否完成        createPoker(); //创建扑克        return true;}//创建扑克void HelloWorld::createPoker(){    //扑克牌正面    CCSprite* pokerFront = CCSprite::create("poker_front.png");    pokerFront->setVisible(false);    pokerFront->setPosition(ccp(size.width/2, size.height/2));    this->addChild(pokerFront,1,123);      //扑克牌反面    CCSprite* pokerBack = CCSprite::create("poker_back.png");    pokerBack->setPosition(pokerFront->getPosition());    this->addChild(pokerBack,1,321);}//翻牌动作void HelloWorld::startOrbitAction(){    //扑克牌正面    CCSprite* pokerFront = (CCSprite*)this->getChildByTag(123);    //扑克牌反面    CCSprite* pokerBack = (CCSprite*)this->getChildByTag(321);        float orbitTime = 1;    if (pokerFront->isVisible() == false && actionIsDone == true) {        actionIsDone = false;        //第一个参数是旋转的时间，第二个参数是起始半径，第三个参数半径差，第四个参数是起始Z角，第五个参数是旋转Z角差，第六个参数是起始X角，最后一个参数旋转X角差，        CCOrbitCamera* orbitFront = CCOrbitCamera::create(orbitTime, 1, 0, 270, 90, 0, 0);        CCSequence* sequenceFront = CCSequence::createWithTwoActions(CCShow::create(), orbitFront);        CCTargetedAction* targetFront = CCTargetedAction::create(pokerFront, sequenceFront);        CCOrbitCamera* orbitBack = CCOrbitCamera::create(orbitTime, 1, 0, 0, 90, 0, 0);        pokerBack->runAction(CCSequence::create(orbitBack, CCHide::create(), targetFront, CCCallFunc::create(this, callfunc_selector(HelloWorld::actionIsDownFunc)),NULL));    }else if(pokerFront->isVisible() == true && actionIsDone == true){        actionIsDone = false;        CCOrbitCamera* orbitFront = CCOrbitCamera::create(orbitTime, 1, 0, 270, 90, 0, 0);        CCSequence* sequenceFront = CCSequence::createWithTwoActions(CCShow::create(), orbitFront);        CCTargetedAction* targetFront = CCTargetedAction::create(pokerBack, sequenceFront);                CCOrbitCamera* orbitBack = CCOrbitCamera::create(orbitTime, 1, 0, 0, 90, 0, 0);        pokerFront->runAction(CCSequence::create(orbitBack, CCHide::create(), targetFront, CCCallFunc::create(this, callfunc_selector(HelloWorld::actionIsDownFunc)),NULL));    }}void HelloWorld::actionIsDownFunc(){    actionIsDone = true;}bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent){    //翻牌动作    startOrbitAction();    return true;}void HelloWorld::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){}void HelloWorld::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){}void HelloWorld::onEnter(){    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, false);    CCLayer::onEnter();}void HelloWorld::onExit(){    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);    CCLayer::onExit();}HelloWorld::~HelloWorld(){}

第二种方式：如果考虑到性能问题要用到CCSpriteBatchNode的话，那么可以使用CCRotateTo来实现类似的功能：

//扑克牌正面（带数字的是正面）    CCSprite* pokerFront = CCSprite::createWithSpriteFrameName("card_fg.png");    // 数字    CCSprite* pokerNumber = CCSprite::createWithSpriteFrameName("18.png");    //扑克牌反面    CCSprite* pokerBack = CCSprite::createWithSpriteFrameName("card_bg.png");        pokerFront->setPosition(ccp(m_size.width/2, m_size.height/2));    pokerBack->setPosition(ccp(m_size.width/2, m_size.height/2));    pokerNumber->setPosition(ccp(m_size.width/2, m_size.height/2));        m_spriteBatchNode->addChild(pokerFront);    m_spriteBatchNode->addChild(pokerNumber);    m_spriteBatchNode->addChild(pokerBack);            CCRotateTo* rtFont1 = CCRotateTo::create(0.f, 0.f, -90.f);    CCRotateTo* rtNumber1 = CCRotateTo::create(0.f, 0.f, -90.f);        // 先将前景和数字旋转到要进行反过来使用的位置待用    pokerFront->runAction(rtFont1);    pokerNumber->runAction(rtNumber1);        // 将牌的背面向Y轴旋转90度，这时候该面刚好旋转到被隐藏的位置    CCRotateTo* rtBack = CCRotateTo::create(0.5f, 0.f, 90.f);    // 讲牌的正面和数组从刚才的位置旋转到0度，这样子刚好和牌的背面动画衔接起来    CCRotateTo* rtFont2 = CCRotateTo::create(0.5f, 0.f, 0.f);    CCTargetedAction* ta = CCTargetedAction::create(pokerFront, rtFont2);    CCRotateTo* rtNumber2 = CCRotateTo::create(0.5f, 0.f, 0.f);    CCTargetedAction* taa = CCTargetedAction::create(pokerNumber, rtNumber2);        pokerBack->runAction(CCSequence::create(rtBack, CCSpawn::create(ta,taa,nullptr), nullptr));