Ios SceneKit中宣布的func hitTest导致游乐场发生碰撞

我在游乐场中创建了一个场景，并使用hitTest（func-hitTest（upoint:CGPoint，options:[scnhitestoption:Any]？=nil）->[scnhitestresult]）函数来确定其中一个节点是否已被触摸，但它仅在触摸节点时才会导致游乐场中模拟器崩溃。使用xcode的iOS项目上的相同代码不会出现这种情况

func panGesture(sender: UIPanGestureRecognizer) {
    sender.view

    let translation = sender.translation(in: sender.view!)

    var newAngleX = (Float)(translation.y)*(Float)(M_PI)/180.0
    newAngleX += currentXAngle
    var newAngleY = (Float)(translation.x)*(Float)(M_PI)/180.0
    newAngleY += currentYAngle

    if (sender.numberOfTouches>0){

        var point = sender.location(in: self)

        print(point)

        let hit = self.hitTest(point, options: nil)

        let node = hit.first?.node

        node?.eulerAngles.x = newAngleX
        node?.eulerAngles.y = newAngleY

        if(sender.state == UIGestureRecognizerState.ended) {
            currentXAngle = newAngleX
            currentYAngle = newAngleY
        }

    }

}

---

这在操场上跑得真的，真的，真的很慢。。。但也许还有别的事情。无论如何，如果你用这个替换你的

func-panGesture（发送者：UIPangestureRecognitizer）

，它至少可以让你在操场上运行而不会崩溃

func panGesture(sender: UIPanGestureRecognizer) {
    sender.view

    let translation = sender.translation(in: sender.view!)

    var newAngleX = (Float)(translation.y)*(Float)(M_PI)/180.0
    newAngleX += currentXAngle
    var newAngleY = (Float)(translation.x)*(Float)(M_PI)/180.0
    newAngleY += currentYAngle

    let point = sender.location(in: self)
    print(point)

    // important
    guard let hit = self.hitTest(point, options: nil) as? [SCNHitTestResult] else { return }

    // and, don't go in here if hit.count == 0, because it won't have a .first
    if (sender.numberOfTouches > 0 && hit.count > 0){

        let node = hit.first?.node

        node?.eulerAngles.x = newAngleX
        node?.eulerAngles.y = newAngleY

        if(sender.state == UIGestureRecognizerState.ended) {
            currentXAngle = newAngleX
            currentYAngle = newAngleY
        }

    }

}

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有一堆吗？没有。。Xcode上新游戏项目的示例代码在游乐场上报告了sceneKit，这会产生相同的问题发布整个游乐场文件？或者至少足以证明这个问题？@DonMag[