觸摸有問題開始方法

Question

我有我的聲音顯示在屏幕上的標誌和聲音關閉標誌出現時，我測試它。當我點擊它時，我想要做的是從聲音變爲聲音。按鈕確認敲擊，但沒有任何反應。我沒有太多經驗可以在更改節點圖像的時候點擊，所以我不知道我是否使用了最高效的代碼。有人可以看看我的代碼，看看有什麼不對嗎？提前致謝！

@implementation MyScene 
{ 
SKSpriteNode *soundLogo; 
SKSpriteNode *soundOff; 
} 

-(void) addSoundOff:(CGSize)size { 
soundOff = [SKSpriteNode spriteNodeWithImageNamed:@"soundOff"]; 
//resize sprite 
soundOff.size = CGSizeMake(soundOff.size.width/2.25, soundOff.size.height/2.25); 
//position it 
soundOff.position = CGPointMake(65, 25); 
//name sound off 
soundOff.name = @"soundOff"; 

soundOff.zPosition = 0; 
soundOff.alpha = 0; 
//[self addChild:soundOff]; 
} 


-(void) addSoundOn:(CGSize)size { 
soundLogo = [SKSpriteNode spriteNodeWithImageNamed:@"soundLogo"]; 
//resize sprite 
soundLogo.size = CGSizeMake(soundLogo.size.width/2.25, soundLogo.size.height/2.25); 
//position sprite 
CGPoint myPoint = CGPointMake(65, 25); 
soundLogo.position = myPoint; 
//name sound logo 
soundLogo.name = @"soundOn"; 
//add action 

//soundLogo.alpha = 1; 
soundLogo.zPosition = 100; 

[self addChild:soundLogo]; 
} 

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 

UITouch *touch = [touches anyObject]; 
CGPoint location = [touch locationInNode:self]; 
SKNode *node = [self nodeAtPoint:location]; 

if ([node.name isEqualToString:@"soundOn"]) { 

    soundOff.zPosition = 100; 
    soundOff.alpha = 1; 
    soundLogo.alpha = 0; 
    soundLogo.zPosition = 0; 

//  [node removeFromParent]; 
//  [node addChild:soundOff]; 
    NSLog(@"sound on is pressed"); 
} 

if ([node.name isEqualToString:@"soundOff"]) { 

    soundLogo.zPosition = 100; 
    soundLogo.alpha = 1; 
    soundOff.alpha = 0; 
    soundOff.zPosition = 0; 

//  [node removeFromParent]; 
//  [node addChild:soundLogo]; 
    NSLog(@"sound off is pressed"); 
} 
} 

Answer 1

這似乎沒有錯你addSoundOff和addSoundOn功能。作爲解決方案之一，你可以做什麼來改變和zPositionSKSpriteNode的屬性。並在實現中創建soundOff和soundLogo作爲實例變量。因此，這裏的所有代碼：

#import "MyScene.h" 

@implementation MyScene 
{ 
    SKSpriteNode *soundLogo; 
    SKSpriteNode *soundOff; 
} 

-(id)initWithSize:(CGSize)size {  
    if (self = [super initWithSize:size]) { 
     /* Setup your scene here */ 

     self.backgroundColor = [SKColor colorWithRed:0.15 green:0.15 blue:0.3 alpha:1.0]; 

     [self addSoundOn:self.size]; 
     [self addSoundOff:self.size]; 

    } 
    return self; 
} 

-(void) addSoundOff:(CGSize)size { 
    soundOff = [SKSpriteNode spriteNodeWithImageNamed:@"soundOff"]; 
    //resize sprite 
    soundOff.size = CGSizeMake(soundOff.size.width/2.25, soundOff.size.height/2.25); 
    //position it 
    soundOff.position = CGPointMake(65, 25); 
    //name sound off 
    soundOff.name = @"soundOff"; 

    soundOff.alpha = 0; 
    soundOff.zPosition = 0; 
    [self addChild:soundOff]; 

} 

-(void) addSoundOn:(CGSize)size { 
    SKTexture *soundOn = [SKTexture textureWithImageNamed:@"soundLogo"]; 
    soundLogo = [SKSpriteNode spriteNodeWithTexture:soundOn]; 
    //resize sprite 
    soundLogo.size = CGSizeMake(soundLogo.size.width/2.25, soundLogo.size.height/2.25); 
    //position sprite 
    CGPoint myPoint = CGPointMake(65, 25); 
    soundLogo.position = myPoint; 
    //name sound logo 
    soundLogo.name = @"soundOn"; 
    //add action 

    soundLogo.zPosition = 100; 
    [self addChild:soundLogo]; 
} 

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 

    UITouch *touch = [touches anyObject]; 
    CGPoint location = [touch locationInNode:self]; 
    SKNode *node = [self nodeAtPoint:location]; 

    //sound logo pressed to turn sound on/off 
    if ([node.name isEqualToString:@"soundOn"]) { 

     soundOff.alpha = 1; 
     soundOff.zPosition = 100; 
     soundLogo.alpha = 0; 
     soundLogo.zPosition = 0; 

     NSLog(@"sound on is pressed"); 
    } 

    if ([node.name isEqualToString:@"soundOff"]) { 

     soundOff.alpha = 0; 
     soundOff.zPosition = 0; 
     soundLogo.alpha = 1; 
     soundLogo.zPosition = 100; 
     NSLog(@"sound off is pressed"); 
    } 
} 


@end