/*

Copyright (C) 2016 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

A `GCEventViewController` subclass that allows the user to exit the app via the menu button by setting `controllerUserInteractionEnabled` to `true` when transitioning to the `HomeEndScene`.

*/

import SpriteKit

import GameController

class GameViewController: GCEventViewController, SceneManagerDelegate {

    // MARK: Properties

    /// A manager for coordinating scene resources and presentation.

    var sceneManager: SceneManager!

    // MARK: View Life Cycle

    override func viewDidLoad() {

        super.viewDidLoad()

        // `GameInput` will be updated with notifications from paired game controllers.

        let gameInput = GameInput()

        // Load the initial home scene.

        let skView = view as! SKView

        sceneManager = SceneManager(presentingView: skView, gameInput: gameInput)

        sceneManager.delegate = self

        sceneManager.transitionToScene(identifier: .home)

    }

    // MARK: SceneManagerDelegate

    func sceneManager(_ sceneManager: SceneManager, didTransitionTo scene: SKScene) {

        /*

            When transitioning to the `HomeEndScene` set

            `controllerUserInteractionEnabled` to `true` to allow the

            user to exit the app with the menu button. 

            Otherwise, setting `controllerUserInteractionEnabled` to false 

            will not direct game controller events through the UIEvent & UIResponder chain.

            @see GCEventViewController

        */

        controllerUserInteractionEnabled = (scene is HomeEndScene)

    }

}