gistfile1.m

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
      // Create the main window
	window_ = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];


	// Create an CCGLView with a RGB565 color buffer, and a depth buffer of 0-bits
	CCGLView *glView = [CCGLView viewWithFrame:[window_ bounds]
								   pixelFormat:kEAGLColorFormatRGB565	//kEAGLColorFormatRGBA8
								   depthFormat:0	//GL_DEPTH_COMPONENT24_OES
							preserveBackbuffer:NO
									sharegroup:nil
								 multiSampling:NO
							   numberOfSamples:0];
	
	director_ = (CCDirectorIOS*) [CCDirector sharedDirector];

	director_.wantsFullScreenLayout = YES;

	// Display FSP and SPF
	[director_ setDisplayStats:YES];

	// set FPS at 60
	[director_ setAnimationInterval:1.0/60];

	// attach the openglView to the director
	[director_ setView:glView];

	// for rotation and other messages
	[director_ setDelegate:self];

	// 2D projection
	[director_ setProjection:kCCDirectorProjection2D];

	// Enables High Res mode (Retina Display) on iPhone 4 and maintains low res on all other devices
	if( ! [director_ enableRetinaDisplay:YES] )
		CCLOG(@"Retina Display Not supported");

	// Create a Navigation Controller with the Director
	navController_ = [[UINavigationController alloc] initWithRootViewController:director_];
	navController_.navigationBarHidden = YES;

	// set the Navigation Controller as the root view controller
        //	[window_ setRootViewController:rootViewController_];
	[window_ addSubview:navController_.view];

	// make main window visible
	[window_ makeKeyAndVisible];

	// Default texture format for PNG/BMP/TIFF/JPEG/GIF images
	// It can be RGBA8888, RGBA4444, RGB5_A1, RGB565
	// You can change anytime.
	[CCTexture2D setDefaultAlphaPixelFormat:kCCTexture2DPixelFormat_RGBA8888];

	// If the 1st suffix is not found and if fallback is enabled then fallback suffixes are going to searched. If none is found, it will try with the name without suffix.
	// On iPad HD  : "-ipadhd", "-ipad",  "-hd"
	// On iPad     : "-ipad", "-hd"
	// On iPhone HD: "-hd"
	CCFileUtils *sharedFileUtils = [CCFileUtils sharedFileUtils];
	[sharedFileUtils setEnableFallbackSuffixes:NO];				// Default: NO. No fallback suffixes are going to be used
	[sharedFileUtils setiPhoneRetinaDisplaySuffix:@"-hd"];		// Default on iPhone RetinaDisplay is "-hd"
	[sharedFileUtils setiPadSuffix:@"-ipad"];					// Default on iPad is "ipad"
	[sharedFileUtils setiPadRetinaDisplaySuffix:@"-ipadhd"];	// Default on iPad RetinaDisplay is "-ipadhd"

	// Assume that PVR images have premultiplied alpha
	[CCTexture2D PVRImagesHavePremultipliedAlpha:YES];

	// and add the scene to the stack. The director will run it when it automatically when the view is displayed.
	[director_ pushScene: [LevelLayer scene]];

	return YES;
    }

........


    // Supported orientations: Landscape. Customize it for your own needs
    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
    {
	return UIInterfaceOrientationIsLandscape(interfaceOrientation);
    }