IOS 下cocos2dx3.X 启动流程：

IOS 下cocos2dx3.X 启动流程：

 

1、

入口函数：

int main(int argc,char *argv[]) {

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc]init];

// AppController类的实例，称为应用程序委托。

    int retVal = UIApplicationMain(argc, argv,nil, @"AppController");

    [pool release];

    return retVal;

}

 

2、

接下来，主要就在AppController类中了：

2.1、

- (BOOL)application:(UIApplication *)applicationdidFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

// IMPORTANT: Setting the GLView should be done aftercreating the RootViewController

//进行一些初始化，然后进入游戏

    cocos2d::GLView *glview =cocos2d::GLViewImpl::createWithEAGLView(eaglView);

   cocos2d::Director::getInstance()->setOpenGLView(glview);

   cocos2d::Application::getInstance()->run();

    return YES;

}

GLViewImpl类，在分平台有不同的实现，继承于GLView类

----->>>

boolGLViewImpl::initWithEAGLView(void *eaglview)

{

    _eaglview = eaglview;

    CCEAGLView *glview = (CCEAGLView*)_eaglview;

  //这里获取了屏幕大小

    _screenSize.width =_designResolutionSize.width = [glview getWidth];

    _screenSize.height = _designResolutionSize.height= [glview getHeight];

//    _scaleX = _scaleY = [glviewcontentScaleFactor];

    return true;

}

 

2.2、接着执行：

cocos2d::Director::getInstance()->setOpenGLView(glview);

voidDirector::setOpenGLView(GLView *openGLView)

{

    if (_openGLView != openGLView)

    {

        // Configuration. Gather GPU info 获取依稀GPU的信息

        Configuration *conf =Configuration::getInstance();

        conf->gatherGPUInfo();

       CCLOG("%s\n",conf->getInfo().c_str());

 

        if(_openGLView)

            _openGLView->release();

        _openGLView = openGLView;

        _openGLView->retain();

 

        // set size，这个现在是屏幕大小

        _winSizeInPoints =_openGLView->getDesignResolutionSize();

 

        _isStatusLabelUpdated = true;

 

        if (_openGLView)

        {

            setGLDefaultValues();

        }

 

        _renderer->initGLView();

 

        CHECK_GL_ERROR_DEBUG();

 

        if (_eventDispatcher)

        {

           _eventDispatcher->setEnabled(true);

        }

    }

}

2.3、接着执行： cocos2d::Application::getInstance()->run()

Application也是根据平台有不同的实现，继承于ApplicationProtocol

接下来就要运行到：

bool AppDelegate::applicationDidFinishLaunching()

{

    // initialize director

    auto director = Director::getInstance();

    auto glview = director->getOpenGLView();

    if(!glview) {

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

        glview =cocos2d::GLViewImpl::create("sample1");

#else

        glview =cocos2d::GLViewImpl::createWithRect("sample1", Rect(0,0,900,640));

#endif

        director->setOpenGLView(glview);

}

 

    // set FPS. the default value is 1.0/60 ifyou don't call this

    director->setAnimationInterval(1.0 /60);

   

//脚本初始化

    ScriptingCore* sc =ScriptingCore::getInstance();

    sc->addRegisterCallback(register_all_cocos2dx);

   sc->addRegisterCallback(register_cocos2dx_js_core);

   sc->addRegisterCallback(jsb_register_system);

#if(CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)

   sc->addRegisterCallback(JavascriptJavaBridge::_js_register);

#elif(CC_TARGET_PLATFORM == CC_PLATFORM_IOS || CC_TARGET_PLATFORM ==CC_PLATFORM_MAC)

   sc->addRegisterCallback(JavaScriptObjCBridge::_js_register);

#endif

    sc->start();   

   sc->runScript("script/jsb_boot.js");

#ifdefined(COCOS2D_DEBUG) && (COCOS2D_DEBUG > 0)

    sc->enableDebugger();

#endif

   //执行main.js

    ScriptEngineProtocol *engine =ScriptingCore::getInstance();

   ScriptEngineManager::getInstance()->setScriptEngine(engine);

    ScriptingCore::getInstance()->runScript("main.js");

 

    return true;

}