cocos2dx（2）代码基本结构

入口类，cocos2d::CCApplication类统一了各平台的差异

AppDelegate.h

#ifndef __APP_DELEGATE_H__
#define __APP_DELEGATE_H__

#include "cocos2d.h"

class  AppDelegate : private cocos2d::CCApplication
{
public:
    AppDelegate();
    virtual ~AppDelegate();
    virtual bool applicationDidFinishLaunching();//窗口启动完成，加载游戏，开启音乐等①
    virtual void applicationDidEnterBackground();//进入后台，游戏，音乐暂停等
    virtual void applicationWillEnterForeground();//进入前台，游戏，音乐恢复
};

#endif  // __APP_DELEGATE_H__

AppDelegate.cpp

bool AppDelegate::applicationDidFinishLaunching()
{
    
    CCDirector *pDirector = CCDirector::sharedDirector();//初始化导演②
    pDirector->setOpenGLView(CCEGLView::sharedOpenGLView());//绑定opengl窗口

    pDirector->setDisplayStats(true);//是否显示fps
    pDirector->setAnimationInterval(1.0 / 60);//fps默认为1.0 / 60

    CCScene *pScene = HelloWorld::scene();//初始化场景③
    pDirector->runWithScene(pScene);//场景run
    return true;
}

HelloWorldScene.h

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

class HelloWorld : public cocos2d::CCLayer
{
public:
   
    virtual bool init();  
    static cocos2d::CCScene* scene();
    void menuCloseCallback(CCObject* pSender);//菜单关闭事件处理
    void ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);//按键处理
    CREATE_FUNC(HelloWorld);⑤
};
#endif  // __HELLOWORLD_SCENE_H__

HelloWorldScene.cpp

#include "HelloWorldScene.h"

using namespace cocos2d;

CCScene* HelloWorld::scene()
{
    CCScene * scene = NULL;
    do 
    {
        scene = CCScene::create();
        CC_BREAK_IF(! scene);

        HelloWorld *layer = HelloWorld::create();④
        CC_BREAK_IF(! layer);

        scene->addChild(layer);
    } while (0);
    return scene;
}


bool HelloWorld::init()⑥
{
    bool bRet = false;
    do 
    {
        CC_BREAK_IF(! CCLayer::init());

        CCMenuItemImage *pCloseItem = CCMenuItemImage::create(//定义推出菜单
            "CloseNormal.png",
            "CloseSelected.png",
            this,
            menu_selector(HelloWorld::menuCloseCallback));
        CC_BREAK_IF(! pCloseItem);

        pCloseItem->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20));

        CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
        pMenu->setPosition(CCPointZero);
        CC_BREAK_IF(! pMenu);
        this->addChild(pMenu, 1);


        CCLabelTTF* pLabel = CCLabelTTF::create("Hello World111", "Arial", 24);//定义label
        CC_BREAK_IF(! pLabel);
        CCSize size = CCDirector::sharedDirector()->getWinSize();
        pLabel->setPosition(ccp(size.width / 2, size.height - 50));
        this->addChild(pLabel, 1);

        CCSprite* pSprite = CCSprite::create("HelloWorld.png");
        CC_BREAK_IF(! pSprite);
        pSprite->setPosition(ccp(size.width/2, size.height/2));
        this->addChild(pSprite, 0);

	this->setTouchEnabled(true);//设置监听
        bRet = true;
    } while (0);

    return bRet;
}

void HelloWorld::menuCloseCallback(CCObject* pSender)
{
    CCDirector::sharedDirector()->end();
}