let scene = GameScene(size: self.size)
scene.scaleMode = .aspectFill
let animation = SKTransition.fade(withDuration: 1.0) 
self.view?.presentScene(scene,transition: animation)
self.removeAllChildren()
self.removeAllActions()
self.scene?.removeFromParent()

1.编辑：我意识到为什么我会收到这个警告：“我正在尝试将节点添加到已经拥有父节点的父节点”,因为我拥有类外部场景的所有变量以及全局变量.但是,现在当游戏重新开始时,游戏就在左下角.为什么会这样,我该如何解决这个问题呢？ – 固定

2.Edited：现在一切正常,但现在我担心的是即使删除了每个节点并且fps不会随着时间的推移而丢失,也不会调用deinit {}.这是我在GameViewController中用于设置场景和我的GameScene中的内容(每个与场景相关的实例基本上都是相关的)：

import UIKit
import SpriteKit
import GameplayKit

var screenSize = CGSize()

class GameViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    if let view = self.view as! SKView? {
        // Load the SKScene from 'GameScene.sks'
        if let scene = SKScene(fileNamed: "GameScene") {
            // Set the scale mode to scale to fit the window
            scene.scaleMode = .aspectFill
            screenSize = scene.size     
            // Present the scene
            view.presentScene(scene)
        }

        view.ignoresSiblingOrder = true

        view.showsFPS = true
        view.showsNodeCount = true
    }
}

然后我的GameScene基本上是：

import SpriteKit
import GameplayKit

class GameScene: SKScene,SKPhysicsContactDelegate {
//Declare and initialise variables and enumerations here

deinit{print("GameScene deinited")}

override func didMove(to view: SKView) {
     //Setup scene and nodes
}

override func touchesBegan(_ touches: Set<UITouch>,with event: UIEvent?) {
    //Do other things depending on when and where you touch

    //When I want to reset the GameScene 
    let newScene = GameScene(size: self.size)
    newScene.anchorPoint = CGPoint(x: 0.5,y: 0.5)
    newScene.scaleMode = self.scaleMode
    let animation = SKTransition.fade(withDuration: 1.0)
    self.view?.presentScene(newScene,transition: animation)
}

任何答案将不胜感激:)