Tap into Game Center: Dashboard, Access Point, and Profile

10:05 - Presenting the main dashboard

// GKGameCenterViewController

public init(state:)
[...]

// Example: Display Main Dashboard
let vc = GKGameCenterViewController(state: .dashboard)
vc.gameCenterDelegate = self
present(vc, animated: true, completion: nil) 

[...]
enum GKGameCenterViewControllerState : Int {
   case `default`
   case leaderboards
   case achievements
   case challenges
   case localPlayerProfile
   case dashboard
}

10:51 - Display a specific leaderboard

// Display scores for a specific leaderboard
let vc = GKGameCenterViewController(
                leaderboardID: "grp.xyz.laketahoe",
                playerScope: .global,
                timeScope: .allTime)
vc.gameCenterDelegate = self
present(vc, animated: true, completion: nil)

13:18 - Configure and show Access Point

// Configure and show Access Point
func showMainMenu() {
    // Call your code to setup the main menu
    self.setupMainMenu()

    // Place access point on top left   
    GKAccessPoint.shared.location = .topLeading    

    // Show highlights
    GKAccessPoint.shared.showHighlights = true
 
    // Show it!
    GKAccessPoint.shared.isActive = true
}

14:00 - Observing isPresentingGameCenter

let observation = GKAccessPoint.shared.observe(
           \.isPresentingGameCenter
    ) { [weak self] _,_ in
    self.paused = GKAccessPoint.shared.isPresentingGameCenter
}

14:44 - Changing the frame

// Observable properties
// frameInScreenCoordinates

let observation = GKAccessPoint.shared.observe(
           \.frameInScreenCoordinates
    ) { [weak self] _,_ in
    let screenFrame = GKAccessPoint.shared.frameInScreenCoordinates
    let accessPointFrame = myView.convert(screenFrame, from: nil)
    // adjust your layout
}

15:18 - Handling focus

// Apple TV and controllers

// track and update focus
func trackController(position: CGPoint) {
  let screenFrame = GKAccessPoint.shared.frameInScreenCoordinates
  let accessFrame = myView.convert(screenFrame, from: nil)
  // if the point is in the access point turn on feedback
  accessPointElement.focusFeedback = CGRectContainsPoint(accessFrame, position)
}

15:38 - Handling selection

// Apple TV and controllers

// Handle selection
func accessPointSelected() {
  GKAccessPoint.shared.triggerAccessPoint {}
}

20:01 - Showing the player profile

// Local player profile

let profileVC = GKGameCenterViewController(state: .localPlayerProfile)
profileVC.gameCenterDelegate = self

present(profileVC, animated: true, completion: nil)

20:28 - Player restrictions

// Local player restrictions

GKLocalPlayer.local.authenticateHandler = { viewController, error in
    let isGameCenterReady = (viewController == nil) && (error == nil)

    if isGameCenterReady {
        if GKLocalPlayer.local.isUnderage {
            // Hide explicit game content
        }

        if GKLocalPlayer.local.isMultiplayerGamingRestricted {
            // Disable multiplayer game features
        } 

        if GKLocalPlayer.local.isPersonalizedCommunicationRestricted {
            // Disable in game communication UI
        }    
    }
}