这里的新编码器，我制作了一个用于拖动/投掷对象的代码，我想知道如何制作它以便只有部分屏幕可用于触摸，即只能触摸屏幕的下半部分。这是我的gamecene代码，我使用的是Swift 2.0。
"post_id" "meta_value"
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}
答案 0 :(得分：1)
听起来你想忽略屏幕上半部分的触摸。如果是这样，您可以将检查添加到touchesBegan和touchesMoved，如下所示：
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first as UITouch!
let location = touch.locationInNode(self)
guard location.y < self.frame.midY else {
return
}
let sprite = StarNode.star(touch.locationInNode(self))
touchPoint = location
touching = true
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first as UITouch!
let location = touch.locationInNode(self)
guard location.y < self.frame.midY else {
// You might want set touching to false here, depends on the rest of your code
return
}
touchPoint = location
}
我添加的新代码检查触摸的Y位置是否小于场景高度的一半，假设原点位于左下角。如果检查失败，则退出该功能 - 您可能希望添加一些代码来取消那里的触摸操作。
如果您希望屏幕的某个部分是不可触摸的，则可以制作CGRect并检查触摸位置是否始终在矩形之外，例如：
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first as UITouch!
let location = touch.locationInNode(self)
let untouchableArea = CGRect(x: 100, y: 100, width: 200, height: 150)
guard !untouchableArea.contains(location) else {
return
}
// Could do something similar in touchesMoved to guard against moving into the untouchable area
}
答案 1 :(得分：0)
Alessandro Ornano的回应将起作用 - 分析触摸的位置。
另一种方法是使用“触摸屏阻挡器”。由于SpriteKit仅注册最顶部的触摸，因此您可以放置一个使用UIColor.clear颜色的SKSpriteNode，并将其isUserInteractionEnabled设置为true，并将其z位置设置得足够高，使其高于其他可触摸内容。这将形成一个“吃”触摸的透明区域。
（一种方便的调试/可视化技术，在开发过程中，给它一个微弱的透明色而不是完全清晰，所以你可以看到受影响的区域以及是否有任何精灵在阻挡区域上方偷偷摸摸。 ）
这样做的优点是更简单，并且可以轻松关闭和打开功能或轻松更改受影响的区域。但它与亚历山德罗的方法也存在一些差异。例如，它不会阻止进入其区域的拖拽;一旦在触摸屏阻挡区域外建立了拖动，即使您将手指拖过触摸屏障区域，它也将继续接收touchesMoved事件。任何一种方法都可行。您只需选择最适合您特定需求的那个。