/// <summary>
/// Add an exit to the list for a specified direction that leads to the room that is passed in.
/// </summary>
/// <param name="doorway">Doorway object that encapsulates the direction.</param>
/// <param name="room">The room that the exit leads too.</param>
/// <param name="locked">Specify if this exit is locked.</param>
/// <param name="objectToUnlock">The name of the object that can unlock this exit.</param>
/// <exception cref="ArgumentNullException">If the room is null, throw an ArgumentNullException.</exception>
/// <exception cref="InvalidOperationException">If you try to map a room to the same direction twice an
/// InvalidOperationException will be thrown.</exception>
public void AddExit(DoorWay doorway, IRoom room, bool locked = false, string objectToUnlock = "")
{
if (room == null)
{
throw new ArgumentNullException(nameof(room));
}
if (!_roomMappings.ContainsKey(doorway))
{
_roomMappings.Add(doorway, room);
}
else
{
throw new InvalidOperationException("A room mapping already exists for the direction <" + doorway.Direction + ">.");
}
}
/// <summary>
/// Add an exit to the list for a specified direction that leads to the room that is passed in.
/// </summary>
/// <param name="direction">The direction to assign the exit too.</param>
/// <param name="room">The room that the exit leads too.</param>
/// <exception cref="ArgumentNullException">If the room is null, throw an ArgumentNullException.</exception>
/// <exception cref="InvalidOperationException">If you try to map a room to the same direction twice an
/// InvalidOperationException will be thrown.</exception>
public void AddExit(Direction direction, IRoom room)
{
if (room == null)
{
throw new ArgumentNullException(nameof(room));
}
var doorway = new DoorWay
{
Direction = direction,
Locked = false,
};
foreach (var entry in _roomMappings)
{
if (entry.Key.Direction == direction)
{
throw new InvalidOperationException("A room mapping already exists for the direction <" + doorway.Direction + ">.");
}
}
_roomMappings.Add(doorway, room);
}