cocos2d-iphone - 在Cocos2d中刷卡

Question

我正在尝试为Cocos2d最新版本工作，这是我的代码:

-(void) setupGestureRecognizers 
{
    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeft)];

    [swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];

    [swipeLeft setNumberOfTouchesRequired:1];

    [[[CCDirector sharedDirector] openGLView] addGestureRecognizer:swipeLeft];


}

它根本无法检测到滑动!

更新1:

我将代码更新为以下内容，但仍未检测到滑动。

-(void) setupGestureRecognizers 
{
    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeft)];

    [swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];

    [swipeLeft setNumberOfTouchesRequired:1];

    [[[[CCDirector sharedDirector] openGLView] window] setUserInteractionEnabled:YES];

    [[[CCDirector sharedDirector] openGLView] setUserInteractionEnabled:YES];
    [[[CCDirector sharedDirector] openGLView] addGestureRecognizer:swipeLeft];


}

Answer 1

我也尝试使这项工作有效，但是我发现了一种更容易控制的方法。

因此，例如，如果您想检测到向左滑动，我将按照以下说明进行操作。

在您的类的界面中声明两个变量

CGPoint firstTouch;
CGPoint lastTouch;

在实现类的init方法中启用触摸

self.isTouchEnabled = YES;

3.将这些方法添加到您的类(class)中

-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    NSSet *allTouches = [event allTouches];
    UITouch * touch = [[allTouches allObjects] objectAtIndex:0];
    CGPoint location = [touch locationInView: [touch view]];
    location = [[CCDirector sharedDirector] convertToGL:location];

    //Swipe Detection Part 1
    firstTouch = location;
}

-(void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    NSSet *allTouches = [event allTouches];
    UITouch * touch = [[allTouches allObjects] objectAtIndex:0];
    CGPoint location = [touch locationInView: [touch view]];
    location = [[CCDirector sharedDirector] convertToGL:location];

    //Swipe Detection Part 2
    lastTouch = location;

    //Minimum length of the swipe
    float swipeLength = ccpDistance(firstTouch, lastTouch);

    //Check if the swipe is a left swipe and long enough
    if (firstTouch.x > lastTouch.x && swipeLength > 60) {
        [self doStuff];
    }

}

如果发生了向左滑动，则称为“doStuff”方法。