目录结构：

1.类AppDelegate   //控制游戏生命周期

    类AppDelegate继承了CCApplication，定义了三个方法：

virtualbool applicationDidFinishLaunching();         //响应窗口启动完成后的工作

virtualvoid applicationDidEnterBackground();         //响应窗口进入后台的工作

virtualvoid applicationWillEnterForeground();          //响应窗口从后台恢复的工作

 I  启动时初始化的工作

1. bool AppDelegate::applicationDidFinishLaunching()

2. {

3. // initialize Director

4. CCDirector* pDirector =CCDirector::sharedDirector();  // 场景管理器

5. CCEGLView* pEGLView =CCEGLView::sharedOpenGLView();  //创建视口

6. pDirector->setOpenGLView(pEGLView);          //设置OpenGL视口

7. // Set the design resolution

8. pEGLView->setDesignResolutionSize(designResolutionSize.width,designResolutionSize.height, kResolutionNoBorder);     //设置分辨率大小

9. CCSize frameSize =pEGLView->getFrameSize();

10. vector<string> searchPath;           //资源路径

11. //在不同的平台下加载不同的资源

12. if (frameSize.height> mediumResource.size.height)

13. {

14. searchPath.push_back(largeResource.directory);

15. pDirector->setContentScaleFactor(MIN(largeResource.size.height/designResolutionSize.height,largeResource.size.width/designResolutionSize.width));

16. }

17. // if the frame'sheight is larger than the height of small resource size, select mediumresource.

18. else  if (frameSize.height > smallResource.size.height)

19. {

20. searchPath.push_back(mediumResource.directory);

21. pDirector->setContentScaleFactor(MIN(mediumResource.size.height/designResolutionSize.height,mediumResource.size.width/designResolutionSize.width));

22. }

23. // if the frame's height is smaller than the height of medium resource size, select smallresource.

24. else

25. {

26. searchPath.push_back(smallResource.directory);

27. pDirector->setContentScaleFactor(MIN( smallResource.size.height/designResolutionSize.height , smallResource.size.width/designResolutionSize.width ) );

28. }

29. //设置资源文件路径

30. CCFileUtils::sharedFileUtils()->setSearchPaths(searchPath);

31. // turn ondisplay FPS

32. pDirector->setDisplayStats(true);    //开启显示FPS

33. // set FPS. the default value is 1.0/60 if you don't call this

34. pDirector->setAnimationInterval(1.0 /60);   // 设置帧速率 ，最好不要低于30帧

35. // create a scene. it's an autorelease object

36. CCScene *pScene = HelloWorld::scene();      //调用静态方法创建一个场景，HelloWorld中会负责场景的实现

37. pDirector->runWithScene(pScene);      //导演调用，运行HelloWorld中的场景。

38. return  true;

39. }

II  暂停动作

1. // This function will be called when the app is inactive. When comes a phone call,it's be invoked too

2. void AppDelegate::applicationDidEnterBackground()

3. {

4. CCDirector::sharedDirector()->stopAnimation();     //暂停活动

5. // if you use SimpleAudioEngine, it must be pause

6. // SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();   //暂停背景音乐

7. }

III  恢复动作

1. // this function will be called when the app is active again

2. void AppDelegate::applicationWillEnterForeground()

3. {

4. CCDirector::sharedDirector()->startAnimation();   // 恢复活动

5. // if you use SimpleAudioEngine, it must resume here

6. // SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();   // 恢复背景音乐

7. }

2.HelloWorld

1. CCScene*HelloWorld::scene()

2. {

3. // 'scene' is an autorelease object

4. CCScene *scene = CCScene::create();    //创建场景

5. // 'layer' is an autorelease object

6. HelloWorld *layer = HelloWorld::create();    //创建图层

7. // add layer as achild to scene

8. scene->addChild(layer);                  //添加图层作为节点

9. // return the scene

10. return scene;

11. }

12. bool HelloWorld::init()

13. {

14. // 1. super initfirst

15. if (!CCLayer::init() )     //创建图层

16. {

17. return  false;

18. }

19. CCSize visibleSize =CCDirector::sharedDirector()->getVisibleSize();            //获取大小

20. CCPoint origin =CCDirector::sharedDirector()->getVisibleOrigin();           //获取原点，原点（origin.x , origin.y）在左下角

21. CCMenuItemImage *pCloseItem =CCMenuItemImage::create(  "CloseNormal.png,  "CloseSelected.png",   this,

22. menu_selector( HelloWorld::menuCloseCallback ) );      //创建关闭按钮 ,在这里的图片路径如果不是在/Resources 目录下，则图片不能使用。  如果要在Resources目下放置文件夹，则需要在字符串中加入路径名称，如”/raster-32x32/ 32x32.png“

23. //设置按钮位置，可以看出 Cocos2d-x的坐标原点是左下角

24. pCloseItem->setPosition(ccp(origin.x+ visibleSize.width - pCloseItem->getContentSize().width/2 ,

25. origin.y +pCloseItem->getContentSize().height/2));

26. //   visibleSize.width                                            屏幕的宽度

27. //   pCloseItem->getContentSize().width/2     是图片宽度的1/2

28. //   pCloseItem->getContentSize().height/2    是图片高度的1/2

29. //      pCloseItem->setPosition(ccp(origin.x ,   origin.y ) );  // pCloseItem的坐标设置是以默认锚点为坐标中心，即锚点在（0，0），此时按钮只能显示1/4

30. //创建菜单，将关闭按钮加入到菜单项

31. CCMenu* pMenu = CCMenu::create(pCloseItem,NULL);

32. pMenu->setPosition(CCPointZero);    //  设置菜单的位置

33. this->addChild(pMenu,1);                  //  将菜单加入到HelloWorld图层中

34. //创建 HelloWorld 文本

35. CCLabelTTF* pLabel = CCLabelTTF::create("Hello World","Arial",TITLE_FONT_SIZE);

36. // position thelabel on the center of the screen

37. pLabel->setPosition(ccp(origin.x +visibleSize.width/2,

38. origin.y +visibleSize.height - pLabel->getContentSize().height));  //设置文本（Label）的位置 ，坐标是字符串中心的坐标，并不是最开始的位置

39. // add the labelas a child to this layer

40. this->addChild(pLabel,1);   //  将文本（Label）加入到HelloWorld图层中

41. //创建精灵图片

42. CCSprite* pSprite = CCSprite::create("HelloWorld.png");

43. // position thesprite on the center of the screen

44. pSprite->setPosition(ccp(visibleSize.width/2 + origin.x,visibleSize.height/2 + origin.y));    // 设置图片精灵的位置

45. // add the spriteas a child to this layer

46. this->addChild(pSprite,0);     //  将图片精灵加入到HelloWorld图层中   （第二个参数是Z轴坐标：0在底层，1在上层  。  Z轴坐标系参考笛卡尔右手坐标系（正方向：x轴向右，y轴向上，z轴向外）

47. //设置为相同的Z轴坐标时，按加载顺序显示，先加载的先显示，后加载的后显示

48. return  true;

49. }

IIII  点击按钮结束的回调函数

1. void HelloWorld::menuCloseCallback(CCObject* pSender)

2. {

3. #if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)

4. CCMessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");

5. #else

6. CCDirector::sharedDirector()->end();

7. #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)

8. exit(0);

9. #endif