Question

我正在尝试制作一个游戏，在该游戏中您倾斜手机并尝试将球保持在边界内。我似乎无法弄清楚如何使球不越过边界。我有使球运动的倾向，但它只是穿越了我的所有边界，我似乎无法弄清楚当球与边界接触时如何使球停下来。这是我的代码：

 override func didMove(to view: SKView) {
        let border = SKPhysicsBody(edgeLoopFrom: self.frame)
        self.physicsBody = border

        boundary = (self.childNode(withName: "boundry") as! SKSpriteNode) //the boundary is spelled wrong

        airplane = SKSpriteNode(imageNamed: "ball image")
        airplane.physicsBody = SKPhysicsBody(circleOfRadius: 10)
        airplane.position = CGPoint(x: -211.163, y: 367.3)
        airplane.size =  CGSize(width: 50, height: 50)
        airplane.physicsBody?.isDynamic = true
        airplane.physicsBody?.affectedByGravity = false
        airplane.physicsBody?.allowsRotation = true
        airplane.physicsBody?.pinned = false

        self.addChild(airplane)

        if motionManager.isAccelerometerAvailable {
            // 2
            motionManager.accelerometerUpdateInterval = 0.01
            motionManager.startAccelerometerUpdates(to: .main) {
                (data, error) in
                guard let data = data, error == nil else {
                    return
                }

                // 3
                let currentX = self.airplane.position.x
                self.destX = currentX + CGFloat(data.acceleration.x * 500)
                let currentY = self.airplane.position.y
                self.destY = currentY + CGFloat(data.acceleration.y * 500)
            }
        }
    }

    override func update(_ currentTime: TimeInterval) {

        let action = SKAction.moveTo(x: destX, duration: 1)
        let action2 = SKAction.moveTo(y: destY, duration: 1)
        airplane.run(action)
        airplane.run(action2)
    }

Answer 1

在SpriteKit中，除非您给它们提供一组匹配的collisionBitMask，否则它们不会发生冲突。即border.collisionBitMask和airplane.collisionBitMask需要至少有一个非零位相同。尝试将两者都设置为1。

Answer 2

另一件事是，您可能需要向飞机添加距离限制，以使飞机在速度过高时无法从边界逃脱。

如何检测一个SKSpriteNode何时击中另一个SKSpriteNode？

2 个答案: