Cocos2d-x之Director

 1 runWithScene：    启动游戏，并运行scene场景。这个方法在主程序启动时第一次启动主场景时调用
 2 
 3 popScene：           释放当前场景，再从代执行场景栈中弹出栈顶的场景，并将其设置为当前运行场景。如果栈空，则直接结束应用。
 4 
 5 pushScene:           将当前运行中的场景暂停并压入到带执行场景栈中去，再将传入的scene设置为当前运行场景。
 6 
 7 replaceScene：      直接使用传入的scene替换当前场景来切换画面，当前场景将被释放
 8 
 9 pause：                 暂停当前运行场景中的所有计时器和动作，场景任会显示在屏幕上
10 
11 resume：               恢复当前运行场景中被暂停的计时器和动作

 1 // on "init" you need to initialize your instance
 2 bool HelloWorld::init()
 3 {
 4 //////////////////////////////
 5 // 1. super init first
 6 if ( !Layer::init() )
 7 {
 8 return false;
 9 }
10 
11 Size visibleSize = Director::getInstance()->getVisibleSize();
12 Vec2 origin = Director::getInstance()->getVisibleOrigin();
13 
14 /////////余下部分省略
15 
16 return true;
17 }
18 
19 void HelloWorld::menuCloseCallback(Ref* pSender) //回调函数的功能实现
20 {
21 Director::getInstance()->end();
22 
23 #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
24 exit(0);
25 #endif
26 }
27 
28 bool AppDelegate::applicationDidFinishLaunching() {
29 // initialize director
30 auto director = Director::getInstance();
31 auto glview = director->getOpenGLView();
32 if(!glview) {
33 #if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32) || (CC_TARGET_PLATFORM == CC_PLATFORM_MAC) || (CC_TARGET_PLATFORM == CC_PLATFORM_LINUX)
34 glview = GLViewImpl::createWithRect("MyGame01", Rect(0, 0, designResolutionSize.width, designResolutionSize.height));
35 #else
36 glview = GLViewImpl::create("MyGame01");
37 #endif
38 director->setOpenGLView(glview);
39 }
40 
41 // turn on display FPS
42 director->setDisplayStats(true);
43 
44 // set FPS. the default value is 1.0/60 if you don‘t call this
45 director->setAnimationInterval(1.0 / 60);
46 
47 // Set the design resolution
48 glview->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height, ResolutionPolicy::NO_BORDER);
49 Size frameSize = glview->getFrameSize();
50 // if the frame‘s height is larger than the height of medium size.
51 if (frameSize.height > mediumResolutionSize.height)
52 { 
53 director->setContentScaleFactor(MIN(largeResolutionSize.height/designResolutionSize.height, largeResolutionSize.width/designResolutionSize.width));
54 }
55 // if the frame‘s height is larger than the height of small size.
56 else if (frameSize.height > smallResolutionSize.height)
57 { 
58 director->setContentScaleFactor(MIN(mediumResolutionSize.height/designResolutionSize.height, mediumResolutionSize.width/designResolutionSize.width));
59 }
60 // if the frame‘s height is smaller than the height of medium size.
61 else
62 { 
63 director->setContentScaleFactor(MIN(smallResolutionSize.height/designResolutionSize.height, smallResolutionSize.width/designResolutionSize.width));
64 }
65 
66 register_all_packages();
67 
68 // create a scene. it‘s an autorelease object
69 auto scene = MyGame::createScene();
70 
71 // run
72 director->runWithScene(scene);
73 
74 return true;
75 }
76 
77 // This function will be called when the app is inactive. When comes a phone call,it‘s be invoked too
78 void AppDelegate::applicationDidEnterBackground() {
79 Director::getInstance()->stopAnimation();
80 
81 // if you use SimpleAudioEngine, it must be pause
82 // SimpleAudioEngine::getInstance()->pauseBackgroundMusic();
83 }
84 
85 // this function will be called when the app is active again
86 void AppDelegate::applicationWillEnterForeground() {
87 Director::getInstance()->startAnimation();
88 
89 // if you use SimpleAudioEngine, it must resume here
90 // SimpleAudioEngine::getInstance()->resumeBackgroundMusic();
91 }