在应用程序启动/退出时暂停 spritekit 游戏 .. iOS8 [英] pausing spritekit game on app launch / exit .. iOS8

问题描述

我已经阅读了我能找到的关于这个主题的所有内容，但仍然无法弄清楚我的问题.我尝试在 appdelegate 的每个区域暂停我的游戏

I've read everything I could find on this topic and still cant figure out my issue. I have tried pausing my game in every area of appdelegate

func applicationWillResignActive(application: UIApplication!) {
    NSNotificationCenter.defaultCenter().postNotificationName("pauseGameScene", object: self)
}

func applicationDidEnterBackground(application: UIApplication!) {
    NSNotificationCenter.defaultCenter().postNotificationName("pauseGameScene", object: self)
}

func applicationWillEnterForeground(application: UIApplication!) {
    NSNotificationCenter.defaultCenter().postNotificationName("pauseGameScene", object: self)
}

func applicationDidBecomeActive(application: UIApplication!) {
    NSNotificationCenter.defaultCenter().postNotificationName("pauseGameScene", object: self)
}

在我的控制器中:

override func viewDidLoad() {
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "pauseGame:", name: "pauseGameScene", object: nil)
}

func pauseGame(){
    self.skView.paused = true
    self.skView.scene!.paused = true
}

我知道 pauseGame 有效，因为如果我在场景中使用按钮切换它，它将停止游戏.即使我在将它们加载到控制器后直接暂停我的 skview 和场景.. 游戏在启动时也不会暂停.当我在游戏中时，很容易暂停游戏.但出于某种原因，每当我退出并恢复应用程序时，游戏都会自行取消暂停.

i know pauseGame works because if i toggle it with a button in my scene, it will stop the game. Even if I pause my skview and scene directly after they are loaded in the controller.. the game will not be paused on launch. It's easy to pause the game when I'm in-game. but for some reason whenever i exit and resume the app, the game will un-pause itself.

我注意到如果我变得 hacky 并使用某种延迟.. 我可以让它工作.但显然这很愚蠢..我只需要知道游戏在哪里取消暂停！

i notice if i get hacky and use some kind of delay.. i can get it to work. but obviously this is very stupid.. i just need to know where the game is unpausing itself!

func delay(delay:Double, closure:()->()) {
    dispatch_after(
        dispatch_time(
            DISPATCH_TIME_NOW,
            Int64(delay * Double(NSEC_PER_SEC))
        ),
        dispatch_get_main_queue(), closure)
}

func pauseGame(sender: UIButton!){

    delay(2) {
        println("blah")
        self.skView.paused = true
        self.skView.scene!.paused = true
    }
}

推荐答案

这是一种让视图在从后台模式返回后保持暂停的方法.

Here's a way to keep the view paused after returning from background mode.

Xcode 7(Xcode 8 说明见下文)

Xcode 7 (see below for Xcode 8 instructions)

在故事板中，

1) 将视图的类更改为 MyView

1) Change the class of the view to MyView

在视图控制器中，

2) 使用名为 stayPaused 的布尔值定义一个 SKView 子类

2) Define an SKView subclass with a boolean named stayPaused

class MyView: SKView {
    var stayPaused = false

    override var paused: Bool {
        get {
            return super.paused
        }
        set {
            if (!stayPaused) {
                super.paused = newValue
            }
            stayPaused = false
        }
    }

    func setStayPaused() {
        if (super.paused) {
            self.stayPaused = true
        }
    }
}

3) 将视图定义为 MyView

3) Define the view as MyView

4) 添加通知器来设置stayPaused 标志

4) Add a notifier to set the stayPaused flag

class GameViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
            // Configure the view.
            let skView = self.view as MyView

            NSNotificationCenter.defaultCenter().addObserver(skView, selector:Selector("setStayPaused"), name: "stayPausedNotification", object: nil)

在应用代理中，

5) 在应用激活时发布通知以设置保持暂停标志

5) Post a notification to set the stay paused flag when the app becomes active

func applicationDidBecomeActive(application: UIApplication) {
    NSNotificationCenter.defaultCenter().postNotificationName("stayPausedNotification", object:nil)
}

Xcode 8

在故事板中，

1) 将视图的类从 SKView 更改为 MyView

1) Change the class of the view from SKView to MyView

在视图控制器中，

2) 用一个名为 stayPaused 的布尔值定义一个 SKView 子类

2) Define an SKView subclass with a boolean named stayPaused

class MyView: SKView {
    var stayPaused = false

    override var isPaused: Bool {
        get {
            return super.isPaused
        }
        set {
            if (!stayPaused) {
                super.isPaused = newValue
            }
            stayPaused = false
        }
    }

    func setStayPaused() {
        if (super.isPaused) {
            self.stayPaused = true
        }
    }
}

3) 将视图定义为 MyView

3) Define the view as MyView

4) 添加通知器来设置stayPaused 标志

4) Add a notifier to set the stayPaused flag

class GameViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        if let view = self.view as! MyView? {
            NotificationCenter.default.addObserver(view, selector:#selector(MyView.setStayPaused), name: NSNotification.Name(rawValue: "stayPausedNotification"), object: nil)

在应用代理中，

5) 在应用激活时发布通知以设置保持暂停标志

5) Post a notification to set the stay paused flag when the app becomes active

func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "stayPausedNotification"), object: nil)
}

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