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我正在开发一个垂直滚动游戏，但我无法获得一些东西。我想我设法让精灵正确移动。例如，我让一些敌人生成在屏幕上角的中心（x:160 和 y:480），并通过在每次更新时将 y 减 1 来让它们下来。

奇怪的是，当我在作为子项添加到 GameScene 的 InputLayer 中检测到触摸时，我得到了关于触摸 x 位置的信息，但 y 是颠倒的。换句话说，如果我触摸生成点 (x:160 和 y:480)，我会得到值 x:160 和 y:0，如果我触摸屏幕底部 (y:0)，我会得到 y=480 .

这是为什么？精灵不应该遵循相同的 y 参考吗？ 我想这可能与 AppDelegate 中应用程序的初始化有关，因此我将代码粘贴在这里：

- (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];

    [glView setMultipleTouchEnabled:YES];
    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];
    //  [director setProjection:kCCDirectorProjection3D];

    // 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];

    //Initializes static classes to create shared instance
    PlayerData *playerData = [PlayerData playerData];
    MusicLayer *musicLayer = [MusicLayer music];

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

    return YES;
}
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1 回答 1

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您需要反转触摸，因为它们是 UIKit 对象 (UITouch*)。有一种方法可以解决这个问题

UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView: [touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];
于 2012-09-09T22:30:52.923 回答