How to call method from ViewController in GameScene

Question

I have a method that has a custom segue in my viewController that looks like this:

func gameOver() {
    performSegueWithIdentifier(\"GameOver\", sender: nil         


        

Answer 1

I don't know if this is still relevant, but I would like to present you a solution to this problem.

As you can see here Swift iOS: Perform a Segue from an Instance in a ViewController to another ViewController I had the exact same problem some time ago, which I managed to fix using Protocols.

The problem is, that you can call the "performSegueWithIdentifier("GameOver", sender: nil)" only in your GameViewController Class, but you would like to execute it from your Gamescene.

Therefor you create in your GameScene a protocol like this:

@objc protocol GameOverDelegate {
  func gameOverDelegateFunc()
}

and a variable for the delegate in the Gamescene:

var gamescene_delegate : GameOverDelegate?

in your GameViewController Class you have to add the delegate in the class definition

class GameViewController: UIViewController, GameOverDelegate {
...
}

and set the delegate of the scene in the viewDidLoad function of your GameViewController to self:

scene.gamescene_delegate = self

The last step is to implement the gameOverDelegateFunc() function in your GameViewController:

func gameOverDelegateFunc() {
   self.performSegueWithIdentifier("GameOver", sender: nil)
}

This is all you have to do.

Whenever you want to perform this Segue in your GameScene you just have to call the function through the delegate like this:

gamescene_delegate?.gameOverDelegateFunc()

I hope that everything is clear and I could help,

Regards, Phil