Comunicação com GameController

.swift

override func viewDidLoad() {
  super.viewDidLoad()
  let center = NotificationCenter.default
  let notification: NSNotification.Name = Notification.Name.GCControllerDidConnect
  let selector = #selector(didConnection)
  center.addObserver(self, selector: selector, name: notification, object: nil)
}

@objc func didConnection(){
  guard let controller = GCController.controllers().first else {
    print("algo deu errado")
    return
  }
  print(controller.vendorName ?? "sem nome de fornecedor")  
}