刷卡时主动旋转SKSpriteNode吗？

Question

如果用户向左或向右滑动，我想旋转SKSpriteNode 。 我可以使用UIGestureRecognizer还是有其他解决方法？

Answer 1

最简单的方法是将两个UISwipeGestureRecognizer添加到SKView（每个方向一个）。

如果要处理更慢的手指运动，则需要用UIPanGestureRecognizer代替它们。

Answer 2

在您的场景中，像这样实现didMoveToView:(SKView*)view

- (void)didMoveToView:(SKView *)view {
    self.leftSwipeRecognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(leftSwipe)];
    self.leftSwipeRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
    [view addGestureRecognizer:self.leftSwipeRecognizer];

    self.rightSwipeRecognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(rightSwipe)];
    self.rightSwipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
    [view addGestureRecognizer:self.rightSwipeRecognizer];
}

- (void)rightSwipe {

    //whatever angle and duration you need here  (angle in radians)
    NSTimeInterval duration = 0;
    CGFloat angle = 0;

    [self enumerateChildNodesWithName:nodeIdentifier usingBlock:^(SKNode *node, BOOL *stop) {
        [node runAction:[SKAction rotateByAngle:angle duration:duration]];
    }];
}

• 该节点必须设置为场景的子级。
• 这里的nodeIdentifier将是您要旋转的节点的名称。 这应该设置为您要移动的SKSpriteNode的name属性。