不相互反应的不同触摸目标 c

Question

我在 Ipad 上为两个玩家制作简单的游戏，就像乒乓球一样，当一个手指在屏幕上时，玩家可以用他的球拍做出反应，但是当第二个手指在他的球拍上时，他不能移动他的球拍，但是他而是移动第一个桨，我设置了一些NSLog，它说它们都移动了，但这是不对的，这是我的代码示例：

-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
/* Called when a touch begins */
    for (UITouch *touch in touches) {
//First player
CGPoint touchLocation = [touch locationInNode:self];
SKPhysicsBody* body = [self.physicsWorld bodyAtPoint:touchLocation];

if (body && [body.node.name isEqualToString: paddleCategoryName]) {
    NSLog(@"Began touch on first paddle");
    self.isFingerOnPaddle = YES;
}
//Second player
CGPoint secondTouchLocation = [touch locationInNode:self];
SKPhysicsBody* secondbody = [self.physicsWorld bodyAtPoint:secondTouchLocation];
if (secondbody && [secondbody.node.name isEqualToString: secondPaddleCategoryName]) {
    NSLog(@"Began touch on second paddle");
    self.isSecondFingerOnPaddle = YES;
}
    }
 }

-(void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event {
for (UITouch *touch in touches) {
    //for first player
    if (self.isFingerOnPaddle) {
        CGPoint touchLocation = [touch locationInNode:self];
        CGPoint previousLocation = [touch previousLocationInNode:self];
        SKSpriteNode* paddle = (SKSpriteNode*)[self childNodeWithName: paddleCategoryName];
        int paddleY = paddle.position.y + (touchLocation.y - previousLocation.y);
        paddleY = MAX(paddleY, paddle.size.height/2);
        paddleY = MIN(paddleY, self.size.height - paddle.size.height/2);
        paddle.position = CGPointMake(paddle.position.x, paddleY);
        NSLog(@"First paddle moving");

    }
    //for second player
    if (self.isSecondFingerOnPaddle) {
        CGPoint touchLocation = [touch locationInNode:self];
        CGPoint previousLocation = [touch previousLocationInNode:self];
        SKSpriteNode* secondPaddle = (SKSpriteNode*)[self childNodeWithName: secondPaddleCategoryName];
        int secondPaddleY = secondPaddle.position.y + (touchLocation.y - previousLocation.y);
        secondPaddleY = MAX(secondPaddleY, secondPaddle.size.height/2);
        secondPaddleY = MIN(secondPaddleY, self.size.height - secondPaddle.size.height/2);
        secondPaddle.position = CGPointMake(secondPaddle.position.x, secondPaddleY);
        NSLog(@"Second paddle moving");
    }
}
}
-(void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
self.isFingerOnPaddle = NO;
self.isSecondFingerOnPaddle = NO;
 }

我做错了什么，我需要改变我的代码工作，就像它应该做的那样

Answer 1

更好的方法是对 paddle 进行子类化，并在 paddle 子类中执行触摸代码。这消除了循环遍历触摸数组以查看您的拨片是否被触摸的麻烦，而且它使代码更加整洁和易于阅读。唯一的问题是你必须对你的节点设置稍微不同的样式，因为触摸移动在桨之外不起作用。

这是你的风格

1) 子类 Paddle 到 SKNode
2) 为您的实际桨 gfx 创建一个 SKSpriteNode 的子节点
3) 桨框应设置为场景的宽度，允许玩家触摸的高度（可能是桨 gfx 的高度）
4) 覆盖 Paddle 内的触摸代码，集合中的所有触摸代码应仅与 paddle 所触摸的内容有关
5) 在这些覆盖中执行所有滑动逻辑

现在您已经为您正在寻找的行为定义了 Paddle，您可以将它添加到您喜欢的任何场景中。

这个方法的好处是你消除了很多重复的代码，（因为两边的桨表现不同）如果你想增加一些乐趣，你可以在两边添加更多的桨来提供更多的变化. （每个玩家在比赛场地的中间和底部都有一个桨，可以独立移动）

Answer 2

你的逻辑是错误的，只需添加一个 touchArray 属性来存储第一次触摸和第二次触摸，在触摸开始时设置它，然后确定触摸何时移动。

-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
    /* Called when a touch begins */
    for (UITouch *touch in touches) {

        CGPoint touchLocation = [touch locationInNode:self];
        SKSpriteNode *node = (SKSpriteNode *)[self nodeAtPoint:touchLocation];

        if (node && [node.name isEqualToString: paddleCategoryName]) {
            NSLog(@"Began touch on first paddle");

            [self.touchArray replaceObjectAtIndex:0 withObject:touch];

        }else if (node && [node.name isEqualToString: secondPaddleCategoryName]) {
            NSLog(@"Began touch on second paddle");

            [self.touchArray replaceObjectAtIndex:1 withObject:touch];

        }

    }
}

-(void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event {
    for (UITouch *touch in touches) {
        CGPoint touchLocation = [touch locationInNode:self];

        UITouch *firstTouch = self.touchArray[0];
        UITouch *secondTouch = self.touchArray[1];

        SKSpriteNode *paddle = [[SKSpriteNode alloc] init];

        if (touch == firstTouch) {
            CGPoint previousLocation = [touch previousLocationInNode:self];
            SKSpriteNode* paddle = (SKSpriteNode*)[self childNodeWithName: paddleCategoryName];
            int paddleY = paddle.position.y + (touchLocation.y - previousLocation.y);
            paddleY = MAX(paddleY, paddle.size.height/2);
            paddleY = MIN(paddleY, self.size.height - paddle.size.height/2);
            paddle.position = CGPointMake(paddle.position.x, paddleY);
            NSLog(@"First paddle moving");

        }else if (touch == secondTouch) {
            CGPoint touchLocation = [touch locationInNode:self];
            CGPoint previousLocation = [touch previousLocationInNode:self];
            SKSpriteNode* secondPaddle = (SKSpriteNode*)[self childNodeWithName: secondPaddleCategoryName];
            int secondPaddleY = secondPaddle.position.y + (touchLocation.y - previousLocation.y);
            secondPaddleY = MAX(secondPaddleY, secondPaddle.size.height/2);
            secondPaddleY = MIN(secondPaddleY, self.size.height - secondPaddle.size.height/2);
            secondPaddle.position = CGPointMake(secondPaddle.position.x, secondPaddleY);
            NSLog(@"Second paddle moving");
        }


    }
}
-(void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
    for (UITouch *touch in touches) {
        if (touch == self.touchArray[0]) {
            [self.touchArray replaceObjectAtIndex:0 withObject:@""];
        }else if (touch == self.touchArray[1]) {
            [self.touchArray replaceObjectAtIndex:1 withObject:@""];

        }
    }

    self.isFingerOnPaddle = NO;
    self.isSecondFingerOnPaddle = NO;
}