Swift SpriteKit：当手指停止和相机时，TouchesMoved不会更新

Question

我有一个玩家移动触摸的游戏（如果触摸移动则更新目的地）。一切都很完美，直到相机移动而触摸没有移动（手指在屏幕上停留，因此touchMoved和touchesEnded都没有被调用。玩家移动到与他开始的位置相关的正确位置，但与移动相机无关。 （我不想在相机的参考框架中保存位置..如果这甚至可以工作，因为屏幕一侧的单击会移动pl 艾尔到世界尽头。）

这里的代码很简单：

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {            
        location = touch.location(in: self)            
        player.goto = location
        player.moving = true                
}}

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {       
        let location = touch.location(in: self)       
         player.goto = location
         player.moving = true 
}}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {
        let location = touch.location(in: self)
         player.goto = location
         player.moving = true            
}}   

override func update(_ currentTime: CFTimeInterval) {
    if player.position.x > w_screen/2 && player.position.x < (lab.size.width-w_screen/2) {
        cameranode.position.x = player.position.x
    }

    if player.moving == true {
        v = CGVector(dx: player.goto.x-player.position.x, dy: player.goto.y-player.position.y)
        d = sqrt(v.dx*v.dx + v.dy*v.dy)
        vel = 400*atan(d/20)/1.57
        if vel>1 { player.physicsBody!.velocity = CGVector(dx: v.dx*vel/d, dy: v.dy*vel/d) } else {
            player.moving = false
            player.physicsBody!.velocity = CGVector.zero
}}

任何帮助将不胜感激。

Answer 1

if player.position.x > w_screen/2 && player.position.x < (lab.size.width-w_screen/2) {
        cameranode.position.x = player.position.x
    }

这就是为什么相机没有移动到您想要的位置，您将相机移动到player.position.x，但是您永远不会更新您的转到位置。

只考虑相机移动的程度并相应调整goto。

if player.position.x > w_screen/2 && player.position.x < (lab.size.width-w_screen/2) {

        let camShiftX = player.position.x - cameranode.position.x
        let camShiftY = player.position.y - cameranode.position.y

        cameranode.position.x = player.position.x
        player.goto.x += camShiftX
        player.goto.y += camShiftY

    }