FILE
	/usr/common/sys/mapd.c

NAME
	get_room_by_num - finds a room by its room number

PROTOTYPE
	object get_room_by_num(int room_num)

CALLED BY
	System, Common, Game

DESCRIPTION
	Returns a room object given the room number.  The number is
	assigned by add_room_to_zone.

RETURN VALUE
	The room object, or nil if it can't be found.

ERRORS
	Normally none.

SEE ALSO
	add_room_to_zone