如何从 SKScene 返回到 UIViewController (MenuVC)？
How to get back from SKScene to UIViewController (MenuVC)?
我和这个帖子中的人有类似的问题 How to get from SKScene to UIViewController?。首先，我应该说我是一个完全的初学者，这对我来说是全新的。
我的主菜单（我的应用加载时的第一个屏幕）在这里：
class MenuVC: UIViewController {
... }
我的应用（游戏）的交互可以在这里进行：
//
// GameScene.swift
// Doodle Pong
//
// Created by Daniel Kloe on 28.02.17.
// Copyright © 2017 Daniel Kloe. All rights reserved.
//
import SpriteKit
import GameplayKit
import Foundation
import UIKit
class GameScene: SKScene {
//let storyboard = UIStoryboard(name: "Main", bundle: nil)
//let MenuVC = storyboard.instantiateViewController(withIdentifier: "MenuVC")
//MenuVC.view.frame = (self.view?.frame)!
//MenuVC.view.layoutIfNeeded()
//UIView.transition(with: self.view!, duration: 0.3, options: .transitionFlipFromRight, animations:
//{
//self.view?.window?.rootViewController = vc
//}, completion: { completed in
//})
var ball = SKSpriteNode()
var enemy = SKSpriteNode()
var main = SKSpriteNode()
var score = [Int] ()
var topLbl = SKLabelNode()
var btmLbl = SKLabelNode()
override func didMove(to view: SKView) {
topLbl = self.childNode(withName: "topLabel") as! SKLabelNode
btmLbl = self.childNode(withName: "btmLabel") as! SKLabelNode
ball = self.childNode(withName: "ball") as! SKSpriteNode
enemy = self.childNode(withName: "enemy") as! SKSpriteNode
main = self.childNode(withName: "main") as! SKSpriteNode
let border = SKPhysicsBody(edgeLoopFrom: self.frame)
border.friction = 0
border.restitution = 1
self.physicsBody = border
startGame()
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
// let gameSceneTemp = GameScene(fileNamed: "GameScene")
// self.scene?.view?.presentScene(gameSceneTemp, transition: SKTransition.doorsCloseHorizontal(withDuration: 0.01))
let location = touch.location(in: self) //die location wird mit dem Berühren auf dem Bildschirm beschrieben
if currentGameType == .TwoPlayer{
if location.y > 0{
enemy.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
if location.y < 0{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
else{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
}
func startGame(){
score = [0,0]
topLbl.text = "\(score[1])"
btmLbl.text = "\(score[0])"
//let delay = SKAction.wait(forDuration: 2000)
//self.run(delay) //evtl. Wartezeit 2s, funktioniert noch nicht richtig
ball.physicsBody?.applyImpulse(CGVector(dx: 20, dy: 20))
}
func addScore(playerWhoWon : SKSpriteNode){
ball.position = CGPoint(x: 0, y: 0)
ball.physicsBody?.velocity = CGVector(dx: 0, dy: 0)
if playerWhoWon == enemy{
score[1] += 1
ball.physicsBody?.applyImpulse(CGVector(dx: 32, dy: 27))
}
else if playerWhoWon == main{
score[0] += 1
ball.physicsBody?.applyImpulse(CGVector(dx: -32, dy: -27))
}
topLbl.text = "\(score[1])"
btmLbl.text = "\(score[0])"
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
let location = touch.location(in: self) //die location wird mit dem Berühren auf dem Bildschirm beschrieben
if currentGameType == .TwoPlayer{
if location.y > 0{
enemy.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
if location.y < 0{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
else{
self.topLbl.zRotation = CGFloat(2 * M_PI)
// UIView.animate(withDuration: 0, animations: ({
// self.topLbl.zRotation = CGFloat(2 * M_PI) //CGFloat(.pi / 4.0)
// }))
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
}
override func update(_ currentTime: TimeInterval) {
switch currentGameType{
case .Easy:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 1.0))
break
case .Medium:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 0.5))
break
case .Extreme:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 0.08))
break
case .TwoPlayer:
break
}
//Called before each frame is rendered
if ball.position.y <= main.position.y - 20{
addScore(playerWhoWon: enemy)
}
else if ball.position.y >= enemy.position.y + 20{
addScore(playerWhoWon: main)
}
}
@IBAction func backToMainMenu(_ sender: Any) {
//self.view?.window?.rootViewController
self.view?.window!.rootViewController?.dismiss(animated: false, completion: nil)
}
}
在我的函数 "backToMainMenu" 中，我尝试返回 MenuVC，但收到警告 "Expression of type 'UIViewController?' is unused"，如果我在模拟器中尝试，模拟器将崩溃。
感谢所有帮助:)。
尝试：
self.view.window!.rootViewController?.dismiss(animated: false, completion: nil)
这应该关闭根以上的所有视图ViewController
编辑：
这可能对您有用，因为我们定义了 ViewController，确保在您的 Storyboard 中您的 MenuVC 有一个标识符：
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "MenuVC") // Make sure is the same identifier as in the storyboard.
vc.view.frame = (self.view?.frame)!
vc.view.layoutIfNeeded()
UIView.transition(with: self.view!, duration: 0.3, options: .transitionFlipFromRight, animations:
{
self.view?.window?.rootViewController = vc
}, completion: { completed in
})
}
编辑：
似乎最好的方法是在另一个视图控制器中托管您的 SKScene class。我的建议是在您的 SKScene 所在的位置创建另一个 ViewController，例如 SKViewController。将您的 MenuVC 嵌入到 navigationController 中，在故事板中单击它，单击编辑器（从顶部的菜单中）> 嵌入 > 导航控制器。编辑您的 MenuVC，而不是打开您的场景，您只需转到 SKViewController，然后在那里打开场景。要做到这一点，只需在故事板中从 MenuVC 创建一个 segue，例如使用标识符 "MenuToSKScene"，当你想打开场景时，从你的 MenuVC 只需执行：
self.performsegue(with identifier: "MenuToSKScene", sender: self)
然后在 SKViewController 中执行您当前在 MenuVC 中执行的任何操作，而不是打开场景。
这会将您带到 SKViewController，其中有您的 SKScene class。那么当你想回到菜单时，你所要做的就是：
self.dismiss(animated: true, completion: nil)
或者创建一个从 SKViewController 到带有标识符 "SKSceneToMenu" 的 MenuVC 的 segue 并调用：
self.performsegue(with identifier: "SKSceneToMenu", sender: self)
所以基本上，不要从 MenuVC 打开 SKScene，而是要打开一个单独的 viewController SKViewController，当你想打开你的场景时，以便您可以轻松跳回菜单。
我和这个帖子中的人有类似的问题 How to get from SKScene to UIViewController?。首先，我应该说我是一个完全的初学者，这对我来说是全新的。
我的主菜单（我的应用加载时的第一个屏幕）在这里：
class MenuVC: UIViewController {
... }
我的应用（游戏）的交互可以在这里进行：
//
// GameScene.swift
// Doodle Pong
//
// Created by Daniel Kloe on 28.02.17.
// Copyright © 2017 Daniel Kloe. All rights reserved.
//
import SpriteKit
import GameplayKit
import Foundation
import UIKit
class GameScene: SKScene {
//let storyboard = UIStoryboard(name: "Main", bundle: nil)
//let MenuVC = storyboard.instantiateViewController(withIdentifier: "MenuVC")
//MenuVC.view.frame = (self.view?.frame)!
//MenuVC.view.layoutIfNeeded()
//UIView.transition(with: self.view!, duration: 0.3, options: .transitionFlipFromRight, animations:
//{
//self.view?.window?.rootViewController = vc
//}, completion: { completed in
//})
var ball = SKSpriteNode()
var enemy = SKSpriteNode()
var main = SKSpriteNode()
var score = [Int] ()
var topLbl = SKLabelNode()
var btmLbl = SKLabelNode()
override func didMove(to view: SKView) {
topLbl = self.childNode(withName: "topLabel") as! SKLabelNode
btmLbl = self.childNode(withName: "btmLabel") as! SKLabelNode
ball = self.childNode(withName: "ball") as! SKSpriteNode
enemy = self.childNode(withName: "enemy") as! SKSpriteNode
main = self.childNode(withName: "main") as! SKSpriteNode
let border = SKPhysicsBody(edgeLoopFrom: self.frame)
border.friction = 0
border.restitution = 1
self.physicsBody = border
startGame()
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
// let gameSceneTemp = GameScene(fileNamed: "GameScene")
// self.scene?.view?.presentScene(gameSceneTemp, transition: SKTransition.doorsCloseHorizontal(withDuration: 0.01))
let location = touch.location(in: self) //die location wird mit dem Berühren auf dem Bildschirm beschrieben
if currentGameType == .TwoPlayer{
if location.y > 0{
enemy.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
if location.y < 0{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
else{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
}
func startGame(){
score = [0,0]
topLbl.text = "\(score[1])"
btmLbl.text = "\(score[0])"
//let delay = SKAction.wait(forDuration: 2000)
//self.run(delay) //evtl. Wartezeit 2s, funktioniert noch nicht richtig
ball.physicsBody?.applyImpulse(CGVector(dx: 20, dy: 20))
}
func addScore(playerWhoWon : SKSpriteNode){
ball.position = CGPoint(x: 0, y: 0)
ball.physicsBody?.velocity = CGVector(dx: 0, dy: 0)
if playerWhoWon == enemy{
score[1] += 1
ball.physicsBody?.applyImpulse(CGVector(dx: 32, dy: 27))
}
else if playerWhoWon == main{
score[0] += 1
ball.physicsBody?.applyImpulse(CGVector(dx: -32, dy: -27))
}
topLbl.text = "\(score[1])"
btmLbl.text = "\(score[0])"
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
let location = touch.location(in: self) //die location wird mit dem Berühren auf dem Bildschirm beschrieben
if currentGameType == .TwoPlayer{
if location.y > 0{
enemy.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
if location.y < 0{
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
else{
self.topLbl.zRotation = CGFloat(2 * M_PI)
// UIView.animate(withDuration: 0, animations: ({
// self.topLbl.zRotation = CGFloat(2 * M_PI) //CGFloat(.pi / 4.0)
// }))
main.run(SKAction.moveTo(x: location.x, duration: 0.01)) //Der "main Balken" wird zu den location bewegt
}
}
}
override func update(_ currentTime: TimeInterval) {
switch currentGameType{
case .Easy:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 1.0))
break
case .Medium:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 0.5))
break
case .Extreme:
enemy.run(SKAction.moveTo(x: ball.position.x, duration: 0.08))
break
case .TwoPlayer:
break
}
//Called before each frame is rendered
if ball.position.y <= main.position.y - 20{
addScore(playerWhoWon: enemy)
}
else if ball.position.y >= enemy.position.y + 20{
addScore(playerWhoWon: main)
}
}
@IBAction func backToMainMenu(_ sender: Any) {
//self.view?.window?.rootViewController
self.view?.window!.rootViewController?.dismiss(animated: false, completion: nil)
}
}
在我的函数 "backToMainMenu" 中，我尝试返回 MenuVC，但收到警告 "Expression of type 'UIViewController?' is unused"，如果我在模拟器中尝试，模拟器将崩溃。
感谢所有帮助:)。
尝试：
self.view.window!.rootViewController?.dismiss(animated: false, completion: nil)
这应该关闭根以上的所有视图ViewController
编辑：
这可能对您有用，因为我们定义了 ViewController，确保在您的 Storyboard 中您的 MenuVC 有一个标识符：
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "MenuVC") // Make sure is the same identifier as in the storyboard.
vc.view.frame = (self.view?.frame)!
vc.view.layoutIfNeeded()
UIView.transition(with: self.view!, duration: 0.3, options: .transitionFlipFromRight, animations:
{
self.view?.window?.rootViewController = vc
}, completion: { completed in
})
}
编辑：
似乎最好的方法是在另一个视图控制器中托管您的 SKScene class。我的建议是在您的 SKScene 所在的位置创建另一个 ViewController，例如 SKViewController。将您的 MenuVC 嵌入到 navigationController 中，在故事板中单击它，单击编辑器（从顶部的菜单中）> 嵌入 > 导航控制器。编辑您的 MenuVC，而不是打开您的场景，您只需转到 SKViewController，然后在那里打开场景。要做到这一点，只需在故事板中从 MenuVC 创建一个 segue，例如使用标识符 "MenuToSKScene"，当你想打开场景时，从你的 MenuVC 只需执行：
self.performsegue(with identifier: "MenuToSKScene", sender: self)
然后在 SKViewController 中执行您当前在 MenuVC 中执行的任何操作，而不是打开场景。
这会将您带到 SKViewController，其中有您的 SKScene class。那么当你想回到菜单时，你所要做的就是：
self.dismiss(animated: true, completion: nil)
或者创建一个从 SKViewController 到带有标识符 "SKSceneToMenu" 的 MenuVC 的 segue 并调用：
self.performsegue(with identifier: "SKSceneToMenu", sender: self)
所以基本上，不要从 MenuVC 打开 SKScene，而是要打开一个单独的 viewController SKViewController，当你想打开你的场景时，以便您可以轻松跳回菜单。