From the NannyMUD documentation

LAST CHANGE

 2000-12-11 

TOPIC

 
NAME
          castle - Your castle and its role


DESCRIPTION
         The castle you have is just a 'facade'. If you look at the source, you
	will find that it defines an 'enter' command, but won't move the
	player anywhere.

	You have to make a hall way or something like that first. Do this by
	copying one of the standard files (se ed).

	Now change the line in your castle.c that says
	write("This is a close...");
	into
	this_player()->move_player("into castle", "players/peter/hall");

	The function "move_player" in the player object will move the player
	to your hall, tell other players around that he goes into the castle.
	The function '->' (a short-cut for 'call_other') is very special. The
        object 'this_player()' could be seen as a package or module with a lot
	of functions. One of these functions is 'move_player' which is called
        with the arguments "into castle" and "players/peter/hall". If you wish
	to change the way to enter you castle into, say, east then you will
	have to change the 

	add_action("enter", "enter")
	into
	add_action("enter", "east")
	and the arguments to move_player into
	"east" and "players/peter/hall" .