From the NannyMUD documentation

LAST CHANGE

2001-08-12

FUNCTION

NAME
        fast_beat_hook - 


AVAILABILITY
	/obj/player

DESCRIPTION
	This function is called when the hooked player gets a
        heart-beat call. This happens only in combat, and then each second
        second.
 
	ARGUMENTS
	fast_beat_hook(
	  ({ The current attacker object
	  }),
	  The player whose heart beat got called.
	)


NOTE
	The attacker object might be 0 when the hook is called.


SEE ALSO
        slow_beat_hook in hooks/slow_beat_hook