class ViewController: SASecretCommandViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        // Register secret command with SASecretCommandType
        let commandList: [SASecretCommandType] = [
            .up,
            .up,
            .down,
            .down,
            .left,
            .right,
            .left,
            .right,
            .b,
            .a
        ]
        self.registerSecretCommand(commandList)

        //Show inpunt command as icon
        self.showInputCommand = true
    }
}

public enum SASecretCommandType {
    case Uu, down, left, right, a, b
}

didPassSecretCommandHandler = { [weak self] in
    let controller = UIAlertController(title: "Command Passed", message: "This is secret mode!!", preferredStyle: .Alert)
    let action = UIAlertAction(title: "OK", style: .Default) { _ in
        self?.imageView.image = UIImage(named: "secret")
    }
    controller.addAction(action)
    self?.presentViewController(controller, animated: true, completion: nil)
}