From the NannyMUD documentation

LAST CHANGE

2002-01-17

FUNCTION


NAME

        check_busy - See if a player is busy and/or make him busy.

LOCATION

        This function is located in /obj/player.

AVAILABILITY

        This function can be called by any object.

SYNTAX

        int check_busy(int heart_beats)

DESCRIPTION

        The function returns 1 if the player is currently busy; if not the
        player is made busy for the number of heartbeats as detailed by the
        function call and zero is returned.

EXAMPLE

        check_busy()    The same as check_busy(1).
        check_busy(12)  Make the player busy for 12 heartbeats if he isn't.

SEE ALSO

        query_busy in lfun/player/query_busy
        query_busy in std/transport/interior