cocos2d-x 3.1.1 学习笔记［21］cocos2d-x 创建过程

文章出自于  http://blog.csdn.net/zhouyunxuan

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController {

}
- (BOOL) prefersStatusBarHidden;

@end

RootViewController.cpp

#import "RootViewController.h"
#import "cocos2d.h"
#import "CCEAGLView.h"

@implementation RootViewController

/*
 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
        // Custom initialization
    }
    return self;
}
*/

/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/

/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
}

*/
// Override to allow orientations other than the default portrait orientation.
// This method is deprecated on ios6
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return UIInterfaceOrientationIsLandscape( interfaceOrientation );
}

// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead
- (NSUInteger) supportedInterfaceOrientations{
#ifdef __IPHONE_6_0
    return UIInterfaceOrientationMaskAllButUpsideDown;
#endif
}

//是否自己主动旋转
- (BOOL) shouldAutorotate {
    return YES;
}

//这个函数时用来确定我们的应用所支持的旋转方向。假设想要支持每一个方向则直接返回YES即可，还能够单独推断某一方向：
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    [super didRotateFromInterfaceOrientation:fromInterfaceOrientation];

    //设置旋转到某个地方
    /*
     UIInterfaceOrientationPortrait: 正常
     UIInterfaceOrientationPortraitUpsideDown: 转180度
     UIInterfaceOrientationLandscapeLeft: 向左转90度
     UIInterfaceOrientationLandscapeRight: 向右转90度
     */
    //处理转移到某个角度的时候要做的事情
    if (fromInterfaceOrientation == UIInterfaceOrientationPortrait) {
        //
    }
    else if (fromInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown){
        //
    }
    else if (fromInterfaceOrientation == UIInterfaceOrientationLandscapeLeft){
        //
    }
    else if (fromInterfaceOrientation == UIInterfaceOrientationLandscapeRight){
        //
    }

    cocos2d::GLView *glview = cocos2d::Director::getInstance()->getOpenGLView();

    if (glview)
    {
        CCEAGLView *eaglview = (CCEAGLView*) glview->getEAGLView();

        if (eaglview)
        {
            CGSize s = CGSizeMake([eaglview getWidth], [eaglview getHeight]);
            cocos2d::Application::getInstance()->applicationScreenSizeChanged((int) s.width, (int) s.height);
        }
    }
}

//fix not hide status on ios7
- (BOOL)prefersStatusBarHidden
{
    return YES;
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)dealloc {
    [super dealloc];
}

@end

AppController.h

#import <UIKit/UIKit.h>

@class RootViewController;

@interface AppController : NSObject <UIApplicationDelegate> {
    UIWindow *window;
}

@property(nonatomic, readonly) RootViewController* viewController;

@end

AppController.mm

#import "AppController.h"
#import "CCEAGLView.h"
#import "cocos2d.h"
#import "AppDelegate.h"
#import "RootViewController.h"

@implementation AppController

#pragma mark -
#pragma mark Application lifecycle

// cocos2d application instance
static AppDelegate s_sharedApplication;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    // Override point for customization after application launch.

    // Add the view controller's view to the window and display.
    window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];

    // Init the CCEAGLView
    CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [window bounds]
                                     pixelFormat: kEAGLColorFormatRGBA8
                                     depthFormat: GL_DEPTH24_STENCIL8_OES
                              preserveBackbuffer: NO
                                      sharegroup: nil
                                   multiSampling: NO
                                 numberOfSamples: 0];

    // Use RootViewController manage CCEAGLView
    _viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
    _viewController.wantsFullScreenLayout = YES;
    _viewController.view = eaglView;

    // Set RootViewController to window
    if ( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)
    {
        // warning: addSubView doesn't work on iOS6
        [window addSubview: _viewController.view];
    }
    else
    {
        // use this method on ios6
        [window setRootViewController:_viewController];
    }

    [window makeKeyAndVisible];

    [[UIApplication sharedApplication] setStatusBarHidden:true];

    // IMPORTANT: Setting the GLView should be done after creating the RootViewController
    cocos2d::GLView *glview = cocos2d::GLView::createWithEAGLView(eaglView);
    cocos2d::Director::getInstance()->setOpenGLView(glview);

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

    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    /*
     Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
     Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
     */
     //We don't need to call this method any more. It will interupt user defined game pause&resume logic
    /* cocos2d::Director::getInstance()->pause(); */
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    /*
     Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
     */
     //We don't need to call this method any more. It will interupt user defined game pause&resume logic
    /* cocos2d::Director::getInstance()->resume(); */
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    /*
     Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
     If your application supports background execution, called instead of applicationWillTerminate: when the user quits.
     */
    cocos2d::Application::getInstance()->applicationDidEnterBackground();
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    /*
     Called as part of  transition from the background to the inactive state: here you can undo many of the changes made on entering the background.
     */
    cocos2d::Application::getInstance()->applicationWillEnterForeground();
}

- (void)applicationWillTerminate:(UIApplication *)application {
    /*
     Called when the application is about to terminate.
     See also applicationDidEnterBackground:.
     */
}

#pragma mark -
#pragma mark Memory management

- (void)applicationDidReceiveMemoryWarning:(UIApplication *)application {
    /*
     Free up as much memory as possible by purging cached data objects that can be recreated (or reloaded from disk) later.
     */
}

- (void)dealloc {
    [window release];
    [super dealloc];
}

@end

didFinishLaunchingWithOptions
2014-07-28 10:07:41.247 SKT iOS[1024:60b] cocos2d: surface size: 1024x768
cocos2d: GLView End
cocos2d:
{
	cocos2d.x.version: cocos2d-x 3.1.1 - modify by zyx
	cocos2d.x.compiled_with_gl_state_cache: true
	cocos2d.x.build_type: DEBUG
	gl.supports_vertex_array_object: true
	cocos2d.x.compiled_with_profiler: false
	gl.renderer: Apple Software Renderer
	gl.vendor: Apple Computer, Inc.
	gl.max_texture_size: 4096
	gl.max_samples_allowed: 4
	gl.version: OpenGL ES 2.0 APPLE-9.4.3
	gl.supports_S3TC: false
	gl.supports_ATITC: false
	gl.supports_ETC1: false
	gl.max_texture_units: 8
	gl.supports_PVRTC: true
	gl.supports_NPOT: true
	gl.supports_discard_framebuffer: true
	gl.supports_BGRA8888: false
}

libpng warning: iCCP: known incorrect sRGB profile
cocos2d: GLProgramState::init
cocos2d: Director End
AppDelegate::applicationDidFinishLaunching()
cocos2d: Application End
applicationDidBecomeActive

Application 单例的实现方法
//静态函数调用的时候会运行一次构造函数，这个时候就初始化这个对象了。
Application* Application::getInstance()
{
    CC_ASSERT(sm_pSharedApplication);
    return sm_pSharedApplication;
}
//初始化
Application* Application::sm_pSharedApplication = 0;
//Application的构造函数
Application::Application()
{
    //在构造函数里面初始化sm_pSharedApplication
    CC_ASSERT(! sm_pSharedApplication);
    sm_pSharedApplication = this;
}
//Application的析构函数
Application::~Application()
{
    CC_ASSERT(this == sm_pSharedApplication);
    sm_pSharedApplication = 0;
}

Director 单例实现方法
static DisplayLinkDirector *s_SharedDirector = nullptr;
static Director* getInstance();
Director* Director::getInstance()
{
    if (!s_SharedDirector)
    {
        s_SharedDirector = new DisplayLinkDirector();
        s_SharedDirector->init();
    }

    return s_SharedDirector;
}

void Director::setOpenGLView(GLView *openGLView)
{
    CCASSERT(openGLView, "opengl view should not be null");

    if (_openGLView != openGLView)
    {
        // Configuration. Gather GPU info
        Configuration *conf = Configuration::getInstance();
        conf->gatherGPUInfo();
        CCLOG("%s\n",conf->getInfo().c_str());

        if(_openGLView)
            _openGLView->release();
        _openGLView = openGLView;
        _openGLView->retain();

        // set size
        _winSizeInPoints = _openGLView->getDesignResolutionSize();

        createStatsLabel();

        if (_openGLView)
        {
            setGLDefaultValues();
        }

        //初始化renderer
        _renderer->initGLView();

        CHECK_GL_ERROR_DEBUG();

        if (_eventDispatcher)
        {
            _eventDispatcher->setEnabled(true);
        }
    }
}