void AddDoors()
{
// add up
UICell cellU = InstantiateCell(5, m_RoomConfig.GetUp(), UIItem.eType.Door);
UIItem doorU = Instantiate <UIItem>(m_RoomConfig.GetDoor(RoomConfig.eDir.UP), cellU.transform);
cellU.AddItem(doorU);
// add left
UICell cellL = InstantiateCell(m_RoomConfig.GetLeft(), 5, UIItem.eType.Door);
UIItem doorL = Instantiate <UIItem>(m_RoomConfig.GetDoor(RoomConfig.eDir.LEFT), cellL.transform);
cellL.AddItem(doorL);
// add bottom
UICell cellB = InstantiateCell(5, m_RoomConfig.GetDown(), UIItem.eType.Door);
UIItem doorB = Instantiate <UIItem>(m_RoomConfig.GetDoor(RoomConfig.eDir.DOWN), cellB.transform);
cellB.AddItem(doorB);
// add right
UICell cellR = InstantiateCell(m_RoomConfig.GetRight(), 5, UIItem.eType.Door);
UIItem doorR = Instantiate <UIItem>(m_RoomConfig.GetDoor(RoomConfig.eDir.RIGHT), cellR.transform);
cellR.AddItem(doorR);
}