如何仅允许在场景中的特定区域进行触摸?

以下是如何将触摸事件限制在特定区域的示例:

敏捷的

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
    for touch in (touches as! Set<UITouch>) {
        let location = touch.locationInNode(self)

        switch (location) {
        case let point where CGRectContainsPoint(rect, point):
            // Touch is inside of a rect
            ...
        case let point where CGPathContainsPoint(path, nil, point, false):
            // Touch is inside of an arbitrary shape
            ...
        default:
            // Ignore all other touches
            break
        }
    }
}

目标-C

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

    for (UITouch *touch in touches) {
        CGPoint location = [touch locationInNode:self];

        if (CGRectContainsPoint(rect, location)) {

        }
        else if (CGPathContainsPoint(path, nil, location, false)) {

        }
    }
}

我没有足够的评论空间来深入讨论,所以这只是一个准答案。

在您的评论截图中,您似乎不希望在视图底部200像素高的区域中的任何地方识别触摸。

您可以让视图采用UIGestureRecognizerDelegate协议并实现shouldReceiveTouch方法。尝试这样实现该方法(我已经有一段时间没有使用Objective-C了,如果任何语法都不正确,请原谅我):

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch 
{
    CGPoint touchPointInView = [touch locationInView:self];

    if (touchPointInView.y >= CGRectGetMaxY(self.bounds) - 200)
    {
        return NO;
    }
    else
    {
        return YES;
    }
}

不要忘记设置手势识别器的代理(在视图的构造函数中往往是一个好地方):

gestureRecognizer.delegate = self;