TouchInputOverlay.xaml.cs

if (_movementPointerId.HasValue)
{
    var dx = _movementCurrent.X - _movementCenter.X;
    var dy = _movementCurrent.Y - _movementCenter.Y;
    var distance = Math.Sqrt(dx * dx + dy * dy);
    var normalizedDistance = Math.Min(distance / JoystickRadius, 1.0);

    if (normalizedDistance > DeadZone)
    {
        var angle = Math.Atan2(dy, dx);
        var adjustedDistance = (normalizedDistance - DeadZone) / (1.0 - DeadZone);

        // Forward/backward (Y axis, inverted)
        forward = (float)(-Math.Sin(angle) * adjustedDistance);
        // Strafe (X axis)
        strafe = (float)(Math.Cos(angle) * adjustedDistance);
    }
}