Cocos2d-x3.2场景切换

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//GameScene.h

#include "cocos2d.h"

class GameScene : public cocos2d::Layer

{

public:

    static cocos2d::Scene* createScene();

    virtual bool init();

    void menuCallback(cocos2d::Ref* pSender);

    CREATE_FUNC(GameScene);

};

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//GameScene.cpp

#include "GameScene.h"

#include "HelloWorldScene.h"

USING_NS_CC;

cocos2d::Scene* GameScene::createScene()

{

    auto scene = Scene::create();   //创建一个场景

    auto layer = GameScene::create();   //创建一个图层

    scene->addChild(layer);

    return scene;

}

//初始化当前的图层

bool GameScene::init()

{

    if(!Layer::init())      //初始化父类

        return false;

    //添加一个图片精灵

    Size visibleSize = Director::getInstance()->getVisibleSize();   //获取屏幕大小

    auto sprite1 = Sprite::create("game.png");

    sprite1->setAnchorPoint(Point::ZERO);    //设置锚点在左下角，原锚点位置在中心

    sprite1->setPosition(Point(0,0));

    //sprite1->setPosition(Point(visibleSize.width/2, visibleSize.height/2));

    this->addChild(sprite1);

     //添加一个菜单层,当点击按钮时调用menuCallback方法

    auto backItem = MenuItemImage::create(

                                           "CloseNormal.png",

                                           "CloseSelected.png",

                                           CC_CALLBACK_1(GameScene::menuCallback, this));

    backItem->setPosition(Point(visibleSize.width-50, 50));

    auto menu = Menu::create(backItem, NULL);

    menu->setPosition(Point::ZERO);

    this->addChild(menu, 1);

    return true;

}

//从游戏场景跳转到Hello场景

void GameScene::menuCallback(cocos2d::Ref* pSender)

{

    //方法一

//    auto scene = HelloWorld::createScene();     //创建一个新场景，因为原场景已删除

//    Director::getInstance()->replaceScene(scene);

    //方法二

    Director::getInstance()->popScene();        //原场景依然存在，直接出栈

}