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原文地址: http://www.cocos2dev.com/?p=428
刚有人问我cocos2dx能否实现卡牌的翻牌效果，其实cocos2dx有个action就是这个效果，晚上随便写了个效果。需要的可以看看。
上面的效果图是ipad模拟器，所以帧率只有30，实际是60.
这个能实现翻牌的action就是CCOrbitCamera。
<span style="margin: 0px; padding: 0px; border: 0px; font-size: 14px; background: transparent;">static CCOrbitCamera* create(float t, float radius, float deltaRadius, float angleZ, float deltaAngleZ, float angleX, float deltaAngleX);</span>
参数分别为旋转的时间，起始半径，半径差，起始z角，旋转z角差，起始x角，旋转x角差
下面是我封装的cardSprite，
请自己加入自己的工程，
用法：
<span style="margin: 0px; padding: 0px; border: 0px; font-size: 14px; background: transparent;">//创建翻牌sprite, 参数：卡片里面的图，卡片的封面，翻牌所花时间 CardSprite* card = CardSprite::create("1.png", "2.png", 2); card->setPosition(ccp(size.width * .5, size.height * .5)); addChild(card); card->openCard();//开始翻牌</span>
CardSprite.h
<span style="margin: 0px; padding: 0px; border: 0px; font-size: 14px; background: transparent;">//// CardSprite.h// Cocos2dev.com//// Created by LiuYanghui on 13-6-17.////#ifndef __Test__CardSprite__#define __Test__CardSprite__#include "cocos2d.h"USING_NS_CC;class CardSprite : public CCSprite{public: CardSprite(); ~CardSprite(); static CardSprite* create(const char* inCardImageName, const char* outCardImageName, float duration); virtual bool init(const char* inCardImageName, const char* outCardImageName, float duration); private: bool m_isOpened; CCActionInterval* m_openAnimIn; CCActionInterval* m_openAnimOut; void initData(const char* inCardImageName, const char* outCardImageName, float duration); public: void openCard();};#endif /* defined(__Test__CardSprite__) */</span>
CardSprite.cpp
<span style="margin: 0px; padding: 0px; border: 0px; font-size: 14px; background: transparent;">//// CardSprite.cpp// Cocos2dev.com//// Created by LiuYanghui on 13-6-17.////#include "CardSprite.h"#define kInAngleZ 270 //里面卡牌的起始Z轴角度#define kInDeltaZ 90 //里面卡牌旋转的Z轴角度差#define kOutAngleZ 0 //封面卡牌的起始Z轴角度#define kOutDeltaZ 90 //封面卡牌旋转的Z轴角度差enum { tag_inCard = 1, tag_outCard};CardSprite::CardSprite(){ }CardSprite::~CardSprite(){ m_openAnimIn->release(); m_openAnimOut->release();}CardSprite* CardSprite::create(const char* inCardImageName, const char* outCardImageName, float duration){ CardSprite *pSprite = new CardSprite(); if (pSprite && pSprite->init(inCardImageName, outCardImageName, duration)) { pSprite->autorelease(); return pSprite; } CC_SAFE_DELETE(pSprite); return NULL;}bool CardSprite::init(const char* inCardImageName, const char* outCardImageName, float duration){ if (!CCSprite::init()) { return false; } initData(inCardImageName, outCardImageName, duration); return true;}#pragma mark - initDatavoid CardSprite::initData(const char* inCardImageName, const char* outCardImageName, float duration){ m_isOpened = false; CCSprite* inCard = CCSprite::create(inCardImageName); inCard->setPosition(CCPointZero); inCard->setVisible(false); inCard->setTag(tag_inCard); addChild(inCard); CCSprite* outCard = CCSprite::create(outCardImageName); outCard->setPosition(CCPointZero); outCard->setTag(tag_outCard); addChild(outCard); m_openAnimIn = (CCActionInterval*)CCSequence::create(CCDelayTime::create(duration * .5), CCShow::create(), CCOrbitCamera::create(duration * .5, 1, 0, kInAngleZ, kInDeltaZ, 0, 0), NULL); m_openAnimIn->retain(); m_openAnimOut = (CCActionInterval *)CCSequence::create(CCOrbitCamera::create(duration * .5, 1, 0, kOutAngleZ, kOutDeltaZ, 0, 0), CCHide::create(), CCDelayTime::create(duration * .5), NULL); m_openAnimOut->retain();}#pragma mark - public funcvoid CardSprite::openCard(){ CCSprite* inCard = (CCSprite*)getChildByTag(tag_inCard); CCSprite* outCard = (CCSprite*)getChildByTag(tag_outCard); inCard->runAction(m_openAnimIn); outCard->runAction(m_openAnimOut);}</span>
