Sprite - 如何只触摸屏幕的某些部分？答案

【问题标题】：Sprite - How to only touch certain parts of screen?Sprite - 如何只触摸屏幕的某些部分？
【发布时间】：2014-09-02 01:25:27
【问题描述】：

我正在制作游戏，我只想让用户触摸屏幕边缘？有什么办法可以做到吗？

以下代码允许用户触摸屏幕上的任何位置，但我希望他们只触摸屏幕的某些部分。

感谢您的时间和答案

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

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

        SKSpriteNode *sprite = [SKSpriteNode spriteNodeWithImageNamed:@"wall"];

        sprite.position = location;
        sprite.scale = 0.5;
        sprite.name = @"wall"; // Needed For Release Thing
        sprite.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:sprite.frame.size];
        sprite.physicsBody.dynamic = NO;
        sprite.physicsBody.categoryBitMask = wallCategory;


        SKAction *wait = [SKAction waitForDuration:0.4];
        SKAction *delete = [SKAction removeFromParent];


        SKAction *sequence = [SKAction sequence:@[wait, delete, ]];
        [sprite runAction: sequence];

        [self addChild:sprite];

    }
}

【问题讨论】：

标签： ios touch sprite-kit sprite area

【解决方案1】：

我没有测试这个，所以我不确定它是否会工作

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

    if (((location.x < leftTouchArea) || (location.x > rightTouchArea)) && ((location.y < upperTouchArea) || (location.y > lowerTouchArea))) 
    {

        SKSpriteNode *sprite = [SKSpriteNode spriteNodeWithImageNamed:@"wall"];

        sprite.position = location;
        sprite.scale = 0.5;
        sprite.name = @"wall"; // Needed For Release Thing
        sprite.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:sprite.frame.size];
        sprite.physicsBody.dynamic = NO;
        sprite.physicsBody.categoryBitMask = wallCategory;


       SKAction *wait = [SKAction waitForDuration:0.4];
       SKAction *delete = [SKAction removeFromParent];


       SKAction *sequence = [SKAction sequence:@[wait, delete, ]];
       [sprite runAction: sequence];

       [self addChild:sprite];
    }

}

【讨论】：

即使它不起作用，您解决此问题的方法也是完全正确的。