let joystickView = RxJoystickView()

/// Flag determining if vertical line should be drawn.
/// Settings this to false also means vertical movement will be disabled.
joystickView.showVerticalLine = true

/// Flag determining if horizontal line should be drawn.
/// Settings this to false also means horizontal movement will be disabled.
joystickView.showHorizontalLine = true

/// Vertical line color
joystickView.verticalLineColor = UIColor.gray

/// Horizontal line color
joystickView.horizontalLineColor = UIColor.gray

/// Joystick thumb radius in pt
joystickView.thumbRadius = 10

/// Joystick thumb color
joystickView.thumbColor = UIColor.lightGray

// Horizontal thumb position changed: -1 is leftmost position, +1 is rightmost position.
joystickView
    .rx
    .horizontalPositionChanged
    .asDriver(onErrorJustReturn: 0)
    .drive(onNext: { position in
        NSLog("Horizontal position: \(position)")
    }).disposed(by: disposeBag)

// Vertical thumb position changed: -1 is topmost position, +1 is bottommost position.
joystickView
    .rx
    .verticalPositionChanged
    .asDriver(onErrorJustReturn: 0)
    .drive(onNext: { position in
        NSLog("Vertical position: \(position)")
    }).disposed(by: disposeBag)