iOS 如何在 Sprite Kit 中实现 UIButton 的节点行为？

Question

我希望我的一些 Sprite Kit 节点表现得像 UIButtons。我尝试了两种方法:

1) 使用 touchesBegan: - 如果用户小心，这会起作用，但似乎触发了多次，比我禁用交互的速度更快，导致按钮可以被多次激活:

   spriteNode.userInteractionEnabled = YES;

//causes the following to fire when node receives touch
    -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

        self.userInteractionEnabled = NO;

        DLog(@"Do node action");
        self.userInteractionEnabled = YES;


    }

2)我切换到Kobold-Kit作为 iOS Sprite Kit 之上的一层。它允许我做的一件事是添加 button - like behavior到任何节点。但是，我遇到了一个问题，如果我有 2 个按钮堆叠在一起，点击顶部按钮会同时激活这两个按钮。在这种情况下， bool 标志可以防止重复交互。我在 KKScene 中跟踪了堆叠按钮一起触发到此调用的问题:

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];

    for (id observer in _inputObservers)
    {
        if ([observer respondsToSelector:@selector(touchesBegan:withEvent:)])
        {
            [observer touchesBegan:touches withEvent:event];
        }
    }
}

场景只是向场景中的所有节点发送通知。这会导致堆叠在一起的按钮行为一起触发。

有没有一种方法或示例可以说明如何正确安排 sprite 节点以允许类似于 UIButton 的行为，其中我只能激活顶部按钮，并且每次激活都会短暂禁用该按钮之后的时间？

Answer 1

@property (nonatomic, strong) UITapGestureRecognizer *tapGesture;

self.tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGestureStateChanged:)];
self.tapGesture.delegate = self;
[self.view addGestureRecognizer:self.tapGesture];


- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    if (gestureRecognizer == self.tapGesture) {
        return CGRectContainsPoint(self.neededSprite.frame, [self convertPoint:[sender locationInView:self.view] toNode:self]);
    }
    return YES;
}



 - (void)tapGestureStateChanged:(UITapGestureRecognizer *)sender
    {
        if (sender.state == UIGestureRecognizerStateRecognized) {
/* do stuff here */
    }
    }