在SKSpriteNode上滑动手势

Question

我有一个spriteNode ，需要在SKSpriteNode上进行滑动检测，但是似乎滑动手势只能在视图上执行。 有没有办法做到这一点？

SKSpriteNode *rabbit = [SKSpriteNode spriteNodeWithImageNamed:@"rabbit_img"];

UISwipeGestureRecognizer * swipeleft=[[UISwipeGestureRecognizer alloc]initWithTarget:self   action:@selector(handleSwipeGesture:)];
swipeleft.direction=UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeleft];

Answer 1

您可以通过state 属性获取滑动的起始坐标。

- (void)swipe:(UISwipeGestureRecognizer *)recognizer
{
    CGPoint point = [recognizer locationInView:[recognizer view]];
    if (recognizer.state == UIGestureRecognizerStateBegan)
        NSLog(@"start coordinates: %@", NSStringFromCGPoint(point));
}

然后，您可以使用SKNode方法containsPoint:将这些坐标与所需节点进行比较，以了解滑动是否源自节点。