Swift SpriteKit跟踪多点触摸

我有几个按钮可以移动主角。（左、右、跳跃等）但是，当我一次触摸多个按钮时，前一个按钮将结束。我的问题是，如何在两次触球的持续时间内保持两次触球的活力？例如，这将允许角色同时向前移动和跳跃。我已将MultipleToTouchEnabled设置为true。我曾读到，使用字典跟踪触摸会有所帮助，但我似乎无法理解实现

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        for touch in touches {
            let location = touch.locationInView(nil)

            if location.x < self.size.width / 2 && location.y > self.size.height / 2 {
                movingLeft = true
            }
            if location.x > self.size.width / 2 && location.y > self.size.height / 2 {
                movingRight = true
            }
            if location.x < self.size.width / 2 && location.y < self.size.height / 2 {
                jump()
            }
            if location.x > self.size.width / 2 && location.y < self.size.height / 2 {
                jump()
            }
        }
    }

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        movingLeft = false
        movingRight = false
    }

func jump() {
    mainCharacter.physicsBody?.velocity = CGVector(dx: 0, dy: 0)
    mainCharacter.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 400))
}

覆盖函数触摸开始（触摸：设置，withEvent事件：UIEvent？）{
接触{
让位置=触摸。位置查看（无）
如果location.xself.size.height/2{
左移=真
}
如果location.x>self.size.width/2和&location.y>self.size.height/2{
movingRight=true
}
如果location.xself.size.width/2和location.y

逻辑 您应该创建一个活动触摸的字典

private var activeTouches = [UITouch:String]()

每次触摸开始时，您都会将其保存到字典中并为其指定一个标签

activeTouches[touch] = "left"

因此，当触摸结束时，您可以在字典中搜索它并找到相关标签。现在您知道用户已释放了哪个按钮

let button = activeTouches[touch]
if button == "left" { ... }

别忘了把它从字典里删除

实施 结论 我希望我说清楚了。如果有什么不对劲，请告诉我

activeTouches[touch] = nil

class GameScene: SKScene {

    private var activeTouches = [UITouch:String]()

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        for touch in touches {
            let button = findButtonName(from:touch)
            activeTouches[touch] = button
            tapBegin(on: button)
        }
    }

    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        for touch in touches {
            guard let button = activeTouches[touch] else { fatalError("Touch just ended but not found into activeTouches")}
            activeTouches[touch] = nil
            tapEnd(on: button)
        }
    }

    private func tapBegin(on button: String) {
        print("Begin press \(button)")
        // your custom logic goes here
    }

    private func tapEnd(on button:String) {
        print("End press \(button)")
        // your custom logic goes here
    }


    private func findButtonName(from touch: UITouch) -> String {
        // replace this with your custom logic to detect a button location
        let location = touch.locationInView(self.view)
        if location.x > self.view?.frame.midX {
            return "right"
        } else {
            return "left"
        }
    }
}

Begin press right
Begin press left
End press right
End press left