TouchInputOverlay.xaml.cs

if (IsInFireButton(position) && !_firePointerId.HasValue)
{
    _firePointerId = pointerId;
    SetFirePressed(true);
    CapturePointer(e.Pointer);
    e.Handled = true;
    return;
}

if (IsInUseButton(position) && !_usePointerId.HasValue)
{
    _usePointerId = pointerId;
    SetUsePressed(true);
    CapturePointer(e.Pointer);
    e.Handled = true;
    return;
}

if (IsInMenuButton(position))
{
    SendKeyPress(DoomKey.Escape);
    e.Handled = true;
    return;
}