private void selectNext(int direction)
{
var visibleRooms = Rooms.AsEnumerable().Where(r => r.IsPresent);
Room room;
if (selectedRoom.Value == null)
{
room = visibleRooms.FirstOrDefault()?.Room;
}
else
{
if (direction < 0)
{
visibleRooms = visibleRooms.Reverse();
}
room = visibleRooms.SkipWhile(r => r.Room != selectedRoom.Value).Skip(1).FirstOrDefault()?.Room;
}
// we already have a valid selection only change selection if we still have a room to switch to.
if (room != null)
{
selectRoom(room);
}
}
