cocos2d-x学习记录5——CCTransition场景过渡

利用CCTransition能够创建出一系列的场景过渡动画，能够使场景切换时更加绚丽丰富。

CCTransition派生出很多过渡动画，传入的参数一般包括过渡时间和创建的场景。

MyScene.h内容

#ifndef MyScene_H_H
#define MyScene_H_H

#include "cocos2d.h"
using namespace cocos2d;


class TranScene
{
public:
    static CCTransitionScene* createScene(CCScene *scene);

    static int index;
};


class MyScene : public CCLayer
{
public:
    static CCScene* createScene();
    virtual bool init();
    CREATE_FUNC( MyScene );

    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
    //virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);
    //virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);
    //virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);

    virtual void registerWithTouchDispatcher();

    //virtual void ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent);
    //virtual void ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent);
    //virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent);
    //virtual void ccTouchesCancelled(CCSet *pTouches, CCEvent *pEvent);

private:
};

class NextScene : public CCLayer
{
public:
    static CCScene* createScene();
    virtual bool init();
    CREATE_FUNC( NextScene );

    virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);

    virtual void registerWithTouchDispatcher();

private:
};

#endif

MyScene.cpp内容

#include "MyScene.h"

int TranScene::index = 0;

CCTransitionScene* TranScene::createScene(CCScene *scene)
{
    CCTransitionScene *tranScene = NULL;
    switch(index){
    case 0: tranScene = CCTransitionFlipX::create(1, scene); break;
    case 1: tranScene = CCTransitionFlipY::create(1, scene); break;
    case 2: tranScene = CCTransitionFadeDown::create(1, scene); break;
    case 3: tranScene = CCTransitionFadeBL::create(1, scene); break;
    case 4: tranScene = CCTransitionCrossFade::create(1, scene); break;
    }
    index = (++index)%5;
    return tranScene;
}

CCScene* MyScene::createScene()
{
    CCScene *scene = CCScene::create();
    MyScene *layer = MyScene::create();
    scene->addChild(layer);
    return scene;
};


bool MyScene::init()
{
    if( !CCLayer::init() ){
        return false;
    }

    CCSize size = CCDirector::sharedDirector()->getWinSize();
    CCSprite *sprite = CCSprite::create("pal4.png");
    sprite->setAnchorPoint( ccp(0.5, 0.5) );
    //sprite->setPosition( ccp(size.width/2, size.height/2) );
    sprite->setPosition( ccp(size.width/2, size.height/2) );
    sprite->setScaleX( size.width/sprite->getContentSize().width );
    sprite->setScaleY( size.height/sprite->getContentSize().height );
    sprite->setTag(2345);
    addChild(sprite);

    setTouchEnabled(true);

    return true;
}

void MyScene::registerWithTouchDispatcher()
{
    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, true);
}

bool MyScene::ccTouchBegan(CCTouch* pTouch, CCEvent *pEvent)
{
    CCScene *scene = NextScene::createScene();
    //CCTransitionScene *tranScene = CCTransitionFlipX::create(1, scene);
    CCTransitionScene *tranScene = TranScene::createScene(scene);
    CCDirector::sharedDirector()->replaceScene(tranScene);
    return true;
}




CCScene* NextScene::createScene()
{
    CCScene *scene = CCScene::create();
    NextScene *layer = NextScene::create();
    scene->addChild(layer);
    return scene;
};


bool NextScene::init()
{
    if( !CCLayer::init() ){
        return false;
    }

    CCSize size = CCDirector::sharedDirector()->getWinSize();
    CCSprite *sprite = CCSprite::create("pal_4.png");
    sprite->setAnchorPoint( ccp(0.5, 0.5) );
    //sprite->setPosition( ccp(size.width/2, size.height/2) );
    sprite->setPosition( ccp(size.width/2, size.height/2) );
    //sprite->setScale(0.5f);
    sprite->setScaleX( size.width/sprite->getContentSize().width );
    sprite->setScaleY( size.height/sprite->getContentSize().height );
    sprite->setTag(2345);
    addChild(sprite);

    setTouchEnabled(true);

    return true;
}

void NextScene::registerWithTouchDispatcher()
{
    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, true);
}

bool NextScene::ccTouchBegan(CCTouch* pTouch, CCEvent *pEvent)
{
    CCScene *scene = MyScene::createScene();
    //CCTransitionScene *tranScene = CCTransitionFlipX::create(1, scene);
    CCTransitionScene *tranScene = TranScene::createScene(scene);
    CCDirector::sharedDirector()->replaceScene(tranScene);
    return true;
}

实例中，自己简单创建了两个场景，仅仅是所显示的sprite不同而已，并在切换时添加具体的切换效果即可。

运行效果：

  

cocos2d-x内部封装了较多过渡效果，需要时自己选取即可。