18:/std/act/attack.c (/std/act/attack.c)
(public void) set_aggressive(mixed aggro, int pct)
/*
 * Function name: set_aggressive
 * Description:   Make the monster aggressive
 * Arguments:	  aggro - 1 aggressive, 0 - not aggressive; % chance.
 *                  pct - % chance of being brave enough to attack anything.
 */
