restarting and presenting in GameScene - ios

Question

Hello my problem is that when I click on a button to restart my game it will restart, but then if I click on a button that transitions to the MainMenuViewController than the scene will freeze. The interesting thing is that if I restart the game and click on the segue button first it will work properly, but then if I click the restart button the game will then freeze. When clicking on the segue button and it crashes I get the error has no segue with identifier 'GameToMain' when it indeed does work the first time. When I click on the restart game it will just crash with no error. Here is the relevant code for this problem:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let skView = view as! SKView
let scene = GameScene(size: skView.bounds.size)
skView.showsFPS = true
skView.showsNodeCount = true
skView.ignoresSiblingOrder = false
//skView.showsPhysics = true
scene.scaleMode = .AspectFill
skView.presentScene(scene)
scene.viewController = self
}
}
class GameScene: SKScene, SKPhysicsContactDelegate {
var viewController: GameViewController!
This is set up in a func that is called when the player loses:
let tryAgain = SKLabelNode(fontNamed: "Chalkduster")
tryAgain.text = "Try Again?"
tryAgain.color = SKColor.yellowColor()
tryAgain.name = "retryLabel"
tryAgain.fontSize = 28
tryAgain.position = CGPoint(x: size.width/2, y: size.height/2)
playerLayerNode.addChild(tryAgain)
let mainMenuTransition = SKLabelNode(fontNamed: "Chalkduster")
mainMenuTransition.text = "Main Menu"
mainMenuTransition.color = SKColor.yellowColor()
mainMenuTransition.name = "mainMenuTransitionSeque"
mainMenuTransition.fontSize = 20
mainMenuTransition.position = CGPoint(x: size.width/2, y: size.height/2 - 60)
playerLayerNode.addChild(mainMenuTransition)
This is how the labels register and react to being tapped
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in (touches ) {
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if (node.name == "retryLabel") {
print("restart")
let gameScene = GameScene(size: self.size)
let transition = SKTransition.doorsCloseHorizontalWithDuration(0.5)
gameScene.scaleMode = SKSceneScaleMode.AspectFill
gameScene.viewController = GameViewController()
self.scene!.view?.presentScene(gameScene, transition: transition)
print("complete Reload")
}
if (node.name == "mainMenuTransitionSeque") {
print("go to main menu")
self.viewController!.performSegueWithIdentifier("GameToMain", sender: self)
print("complete2")
}

Answer 1

I solved the problem with the current code:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let skView = view as! SKView
let scene = GameScene(size: skView.bounds.size)
//skView.showsFPS = true
//skView.showsNodeCount = true
skView.ignoresSiblingOrder = false
//skView.showsPhysics = true
scene.scaleMode = .AspectFill
scene.viewController = self
skView.presentScene(scene)
}
}
In GameScene
var viewController: GameViewController!
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if (node.name == "retryLabel") {
let skView = view as SKView!
let scene = GameScene(size: skView.bounds.size)
skView.ignoresSiblingOrder = false
scene.scaleMode = .AspectFill
scene.viewController = viewController.self
skView.presentScene(scene)
}
if (node.name == "mainMenuTransitionSeque") {
self.viewController.dismissViewControllerAnimated(false, completion: nil)
print("complete2")
}
}
}
}
So basically to restart the scene I copy and pasted the code from the GameViewController into GameScene so that it would restart the scene exactly, but the key was redeclaring the viewController variable. Then to get to the mainMenu I dismissed the view controller (GameScene) instead of creating a new segue so that I do not keep adding more and more scenes on top of each other.