停止精灵在圆形路径上移动时旋转

Question

我目前正在精灵节点上运行以下代码。

// the circle path's diameter
    let circleDiameter = CGFloat(150)
    // center our path based on our sprites initial position
    let pathCenterPoint = CGPoint(
        x: player.position.x - circleDiameter/2,
        y: player.position.y - circleDiameter/2
    )
    // create the path our sprite will travel along
    let circlePath = CGPath(ellipseIn: CGRect(origin: pathCenterPoint, size: CGSize(width: circleDiameter, height: circleDiameter)), transform: nil)
    // create a followPath action for our sprite
    let followCirclePath = SKAction.follow(circlePath, asOffset: false, orientToPath: true, duration: 4)
    // make our sprite run this action forever
    player.run(SKAction.repeatForever(followCirclePath))
    self.addChild(player)

目前代码工作正常，但是播放器在圆形路径中移动时会旋转。无论如何，我可以阻止玩家精灵旋转，因为它在圆圈中移动？

干杯:D

Answer 1

您

需要做的就是更改此行：

let followCirclePath = SKAction.follow(circlePath, asOffset: false, orientToPath: true, duration: 4)

对此：

let followCirclePath = SKAction.follow(circlePath, asOffset: false, orientToPath: false, duration: 4)

只需将 orientToPath 设置为 false。

作为参考，Apple 在以下文档中对此进行了记录：https://developer.apple.com/reference/spritekit/skaction/1417798-follow