如何使用 sprite kit 场景同时动画和移动播放器节点？

Question

我正在开发一款小型 ios 游戏，其中包含此 joystick library。我的问题是在计算操纵杆的前进方向后，我希望角色变为运行动画（我使用 .sks 文件实现动画）。它几乎可以工作，除非动画开始后停止并且直到玩家松开操纵杆才结束。我的一些代码在下面。感谢任何帮助。

设置棒的功能：

func setupJoystick() {
    addChild(analogJoyStick)

    analogJoyStick.trackingHandler = { [unowned self] data in
        self.thePlayer.position = CGPoint(x: self.thePlayer.position.x + (data.velocity.x * 0.04), y: self.thePlayer.position.y + (data.velocity.y * 0.04))

        let degrees = self.analogJoyStick.data.angular * 360 / (2 * .pi)
        if degrees > 0 {
         let walkAnimation:SKAction = SKAction(named: "WalkLeft")!
         self.thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")
        } else if degrees < 0 {
         let walkAnimation:SKAction = SKAction(named: "WalkRight")!
         self.thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")
        }
    }

    analogJoyStick.beginHandler = { [unowned self] in
        let degrees = self.analogJoyStick.data.angular * 360 / (2 * .pi)
        if degrees > 0 {
            let walkAnimation:SKAction = SKAction(named: "WalkLeft")!
            self.thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")
        } else if degrees < 0 {
            let walkAnimation:SKAction = SKAction(named: "WalkRight")!
            self.thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")
        }
    }

    analogJoyStick.stopHandler = { [unowned self] in
        self.thePlayer.removeAction(forKey: "animating")
    }
}

这是编码的视觉效果： Spritekit Demo

Answer 1

我阅读了 joystick library 说明并看到了两种您可以使用的方法（处理程序）：

var beginHandler: (() -> Void)? // before move
var stopHandler: (() -> Void)? // after move

在beginHandler()中添加（重复）行走动画：

let walkAnimation: SKAction = SKAction(named: theAnimation)!
thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")

并删除 stopHandler()

中的操作

thePlayer.removeAction(forKey: "animating")

或使用闭包（也来自文档）：

joystick.beginHandler = { [unowned self] in
  let walkAnimation: SKAction = SKAction(named: ".sks")!
  self.thePlayer.run(SKAction.repeatForever(walkAnimation), withKey: "animating")
}

joystick.stopHandler = { [unowned self] in
  self.thePlayer.removeAction(forKey: "animating")
}

如何使用 sprite kit 场景同时动画和移动播放器节点？

How to animate and move player node simultaneously, using sprite kit scene?

sprite-kit

swift