目标C语言 如何处理Cocos2d中的CCMenuItem

Question

我是Cocos2d的新手，尝试将游戏从普通的Cocoa Touch移植到Cocos2d。

我用自定义方法创建了一些按钮:

+ (CCMenuItem *)createMenuItemImageWithNormalImage:(NSString *)normalImage selectedImage:(NSString *)selectedImage tag:(int)tag target:(id)target selector:(SEL)selector position:(CGPoint)position {
    CCMenuItem *item = [CCMenuItemImage itemWithNormalImage:normalImage selectedImage:selectedImage];
    item.tag = tag;
    [item setTarget:target selector:selector];
    item.position = [TSCCTransform transformPositionFromCocoaTouchToCocos2d:CGPointMake(position.x, position.y)];
    return item;
}

按钮:

    [self addChild:[TSCCLayer createMenuItemImageWithNormalImage:@"btn-mouse-dec.png" selectedImage:@"btn-mouse-dec.png" tag:0 target:self selector:@selector(changeNumberOfPlayers:) position:ccp([TSCCTransform winSizeWidth] - 140, 146)]];

但是当我点击它的时候什么都没有发生。问题在哪里?如何正确地做呢?

Answer 1

您不必添加菜单项，而是添加菜单。

将CCMenuItem添加到CCMenu，然后将菜单添加为图层的子菜单:

CCMenuItem* item=[TSCCLayer createMenuItemImageWithNormalImage:@"btn-mouse-dec.png" selectedImage:@"btn-mouse-dec.png" tag:0 target:self selector:@selector(changeNumberOfPlayers:) position:ccp([TSCCTransform winSizeWidth] - 140, 146)]
CCMenu* menu= [CCMenu menuWithItems: item, nil];  // item becomes child of menu
[self addChild: menu];