Use a boolean value from another scene in SpriteKit

Question

I am trying to use a variable from my GameScene.swift file on my GameViewController.swift file to time my interstitial ads appropriately. It's a boolean value that determines if my player is dead or not.

var died = Bool()

That's all I did to create the variable in my GameScene.

When died == true in my GameScene, I want to send that to my GameViewController and then show an interstitial ad. How can I pass a boolean between scenes?

Answer 1

You can follow these steps.

Do this in your GameScene:

protocol PlayerDeadDelegate {
    func didPlayerDeath(player:SKSpriteNode)
}

class GameScene: SKScene {
    var playerDeadDelegate:PlayerDeadDelegate?
    ...
    // during your game flow the player dead and you do:
    playerDeadDelegate.didPlayerDeath(player)
    ...
}

---

In the GameViewController you do:

class GameViewController: UIViewController,PlayerDeadDelegate {
     override func viewDidLoad() {
        super.viewDidLoad()
        if let scene = GameScene(fileNamed:"GameScene") {
              ...
              scene.playerDeadDelegate = self
        }
     }

     func didPlayerDeath(player:SKSpriteNode) {
         print("GameViewController: the player is dead now!!!")
         // do whatever you want with the property player..
     }
}