void behaviour_event( monsters *mon, int event_type,
                      int src = MHITNOT, int src_x = 0, int src_y = 0 );

void behaviour_event(monsters *mon, int event_type, int src = MHITNOT,
                     int src_x = 0, int src_y = 0);

void behaviour_event( monsters *mon, int event, int src,
                      int src_x, int src_y )

void behaviour_event(monsters *mon, int event, int src,
                     int src_x, int src_y)

        // or else fleeing anyway. Hitting someone over

        // or else fleeing anyway.  Hitting someone over

        // Now set target x,y so that monster can whack

        // Now set target x, y so that monster can whack

    _handle_behaviour( mon );

    _handle_behaviour(mon);

                // Couldn't unsubmerge.

                // Lurking monsters that can't unsubmerge keep lurking.