調用從菜單中父場景的方法在其子層的Cocos2D

Question

我增加了層（hudLayer）到我的遊戲場景，然後添加一個菜單，從中我想運行一個功能層- (void) pauseGame { method in here }

我想實現這個像這樣：

- (void) addPauseButton: (CCScene *) parent { 
pauseButton = [CCMenuItemImage itemWithNormalImage:@"pause.png" selectedImage:nil target:parent selector:@selector(pauseGame:)]; 
pause = [CCMenu menuWithItems:pauseButton, nil]; 
[hudLayer addChild: pause]; 
if (device == @"iPad") { 
    pause.position = ccp(40,40); 
} 
else if (device == @"iPhoneFive") { 
    pause.position = ccp(290,30); 
} 
else { 
    pause.position = ccp(290,30); 
} 
} 

- (id)init { 

if((self=[super init])) { 
    paused = FALSE; 
    CGSize screenSize = [CCDirector sharedDirector].winSize; 

    hudLayer = [[[CCLayer alloc] init] autorelease]; 
    [self addChild:hudLayer z:2]; // adds hudLayer 

    gameLayer = [[[CCLayer alloc] init] autorelease]; 
    [self addChild:gameLayer z:1]; 

    pauseMenu = [[[CCLayer alloc] init] autorelease]; 
    [self addChild:pauseMenu z:4]; 

    [self setupWorld]; 
    [self addPauseButton:self]; //calls method to add pause button to hudLayer sending it the scene as a variable 

    CGPoint offScreenPoint = ccp(screenSize.width+(screenSize.width/2), 0); 

    pauseMenu.position = offScreenPoint; 

    self.motionManager = [[[CMMotionManager alloc] init] autorelease]; 
    motionManager.deviceMotionUpdateInterval = 1.0/60.0; 
    if (motionManager.isDeviceMotionAvailable) { 
     [motionManager startDeviceMotionUpdates]; 
    } 
    self.iPadBool = UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad; 

    if (iPadBool) { 
     device = @"iPad"; 
    } 
    else if (screenSize.height > 490) { 
     device = @"iPhoneFive"; 
    } 
    else { 
     device = @"iPhone"; 
    } 
    NSLog(@"the current device is a, %@", device); 
    [self schedule:@selector(update:)]; 

} 
return self; 
} 

然而，這將引發錯誤：*終止應用程序由於未捕獲的異常「NSInvalidArgumentException」，原因是：「 - [遊戲pauseGame：]：無法識別的選擇發送到實例0x11d310e0'不知道爲什麼：/任何想法的？

Answer 1

選擇器應該是

@selector(pauseGame) 

沒有結腸。它不需要參數。方法應該是：

-(void) pauseGame 
{ 
}