LayerMultiplex是层的控制器类

使用如下

LayerMultiplexTest.h

//
//  LayerMultiplexTest.h
//  cpp4
//
//  Created by 杜甲 on 10/13/14.
//
//

#ifndef __cpp4__LayerMultiplexTest__
#define __cpp4__LayerMultiplexTest__

#include "cocos2d.h"

USING_NS_CC;

class LayerMultiplexTest : public Layer
{
public:
    
    virtual bool init();
    
    // there's no 'id' in cpp,so we recommend returning the class instance pointer
    static cocos2d::Scene* scene();
    
    
    
    // implement the "static node()" method manually
    CREATE_FUNC(LayerMultiplexTest);
    
};


class TestMainLayer : public LayerColor
{
    
public:
    virtual bool init();
    CREATE_FUNC(TestMainLayer);
    
private:
    void menuCallback1(cocos2d::Ref *sender);
    void menuCallback2(cocos2d::Ref *sender);

};

class TestLayer1 : public LayerColor
{
    
public:
    virtual bool init();
    CREATE_FUNC(TestLayer1);
    void menuCallback1(cocos2d::Ref *sender);
};

class TestLayer2 : public LayerColor
{
    
public:
    virtual bool init();
    CREATE_FUNC(TestLayer2);
    void menuCallback1(cocos2d::Ref *sender);
};







#endif /* defined(__cpp4__LayerMultiplexTest__) */

//
//  LayerMultiplexTest.cpp
//  cpp4
//
//  Created by 杜甲 on 10/13/14.
//
//

#include "LayerMultiplexTest.h"

Scene* LayerMultiplexTest::scene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();
    
    // 'layer' is an autorelease object
    LayerMultiplexTest *layer = LayerMultiplexTest::create();
    
    // add layer as a child to scene
    scene->addChild(layer);
    
    // return the scene
    return scene;
}

bool LayerMultiplexTest::init()
{
    bool bRet = false;
    do {
        CC_BREAK_IF(!Layer::init());
        
        
        auto mainLayer = TestMainLayer::create();
        auto layer1 = TestLayer1::create();
        auto layer2 = TestLayer2::create();
        //将层放入LayerMultiplex中
        auto layerMutiplex = LayerMultiplex::create(mainLayer,layer1,layer2,nullptr);
        addChild(layerMutiplex,0);
        
        
        bRet = true;
    } while (0);
    return bRet;
}

bool TestMainLayer::init()
{
    bool bRet = false;
    do {
        CC_BREAK_IF(!LayerColor::init());
        auto winSize = Director::getInstance()->getWinSize();
        
        auto label1 = Label::createWithBMFont("bitmapFontTest3.fnt","TestLayer 1");
        auto item1 = MenuItemLabel::create(label1,CC_CALLBACK_1(TestMainLayer::menuCallback1,this));
        
        auto label2 = Label::createWithBMFont("bitmapFontTest3.fnt","TestLayer 2");
        auto item2 = MenuItemLabel::create(label2,CC_CALLBACK_1(TestMainLayer::menuCallback2,this));
        
        auto menu = Menu::create(item1,item2,NULL);
        menu->alignItemsVertically();
        menu->setPosition(winSize / 2);
        addChild(menu);
        
        
        bRet = true;
    } while (0);
    return bRet;
}

void TestMainLayer::menuCallback1(cocos2d::Ref *sender)
{
    static_cast<LayerMultiplex *>(_parent)->switchTo(1);
    
}

void TestMainLayer::menuCallback2(cocos2d::Ref *sender)
{
    static_cast<LayerMultiplex *>(_parent)->switchTo(2);
}




bool TestLayer1::init()
{
    bool bRet = false;
    do {
        CC_BREAK_IF(!LayerColor::initWithColor(Color4B(100,200,100)));
        auto winSize = Director::getInstance()->getWinSize();
        auto label1 = Label::createWithBMFont("bitmapFontTest3.fnt","MainLayer");
        auto item1 = MenuItemLabel::create(label1,CC_CALLBACK_1(TestLayer1::menuCallback1,this));
        auto menu = Menu::create(item1,NULL);
        menu->alignItemsVertically();
        menu->setPosition(winSize / 2);
        addChild(menu);
        
        
        bRet = true;
    } while (0);
    return bRet;
}
void TestLayer1::menuCallback1(cocos2d::Ref *sender)
{
    //返回  方法
    static_cast<LayerMultiplex *>(_parent)->switchTo(0);
    
}

bool TestLayer2::init()
{
    bool bRet = false;
    do {
        CC_BREAK_IF(!LayerColor::initWithColor(Color4B(100,100,100)));
      auto winSize = Director::getInstance()->getWinSize();
        auto label1 = Label::createWithBMFont("bitmapFontTest3.fnt",CC_CALLBACK_1(TestLayer2::menuCallback1,this));
        
        
        auto menu = Menu::create(item1,NULL);
        menu->alignItemsVertically();
        menu->setPosition(winSize / 2);
        addChild(menu);
        
        bRet = true;
    } while (0);
    return bRet;
}

void TestLayer2::menuCallback1(cocos2d::Ref *sender)
{
    static_cast<LayerMultiplex *>(_parent)->switchTo(0);
    
}