npcnear.cc

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/*
 *  npcnear.cc - At random times, run proximity usecode functions on nearby NPC's.
 *
 *  Copyright (C) 2000-2001  The Exult Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#ifndef ALPHA_LINUX_CXX
#  include <cstdlib>
#endif
#include "npcnear.h"
#include "gamewin.h"
#include "actors.h"
#include "ucmachine.h"
#include "schedule.h"
#include "items.h"
#include "game.h"
#include "cheat.h"

#include "SDL_timer.h"

#ifndef UNDER_CE
using std::rand;
#endif

bool Bg_dont_wake(Game_window *gwin, Actor *npc);

/*
 *  Add an npc to the time queue.
 */

void Npc_proximity_handler::add
  (
  unsigned long curtime,    // Current time (msecs).
  Npc_actor *npc,
  int additional_secs   // More secs. to wait.
  )
  {
  int msecs;      // Hostile?  Wait 0-2 secs.
  if (npc->get_alignment() >= Npc_actor::hostile)
    msecs = rand() % 2000;
  else        // Wait between 2 & 6 secs.
    msecs = (rand() % 4000) + 2000;
  unsigned long newtime = curtime + msecs;
  newtime += 1000*additional_secs;
  gwin->get_tqueue()->add(newtime, this, reinterpret_cast<long>(npc));
  }

/*
 *  Remove entry for an npc.
 */

void Npc_proximity_handler::remove
  (
  Npc_actor *npc
  )
  {
  npc->clear_nearby();
  gwin->get_tqueue()->remove(this, reinterpret_cast<long>(npc)); 
  }

/*
 *  Is this a Black Gate (Skara Brae) ghost, or Penumbra?
 */

bool Bg_dont_wake
  (
  Game_window *gwin,
  Actor *npc
  )
  {
  int num;
  return (Game::get_game_type() == BLACK_GATE &&
    (npc->get_info().has_translucency() ||
          // Horace or Penumbra?
     (num = npc->Actor::get_npc_num()) == 141 || num == 150));
  }

/*
 *  Run proximity usecode function for the NPC now.
 */

void Npc_proximity_handler::handle_event
  (
  unsigned long curtime,
  long udata
  )
  {
  Npc_actor *npc = (Npc_actor *) udata;
  int extra_delay = 5;    // For next time.
          // See if still on visible screen.
  Rectangle tiles = gwin->get_win_tile_rect().enlarge(10);
  Tile_coord t = npc->get_tile();
  if (!tiles.has_point(t.tx, t.ty) || // No longer visible?
      npc->is_dead())   // Or no longer living?
    {
    npc->clear_nearby();
    return;
    }
  Schedule::Schedule_types sched = (Schedule::Schedule_types)
            npc->get_schedule_type();
          // Sleep schedule?
  if (npc->get_schedule() &&
      sched == Schedule::sleep &&
          // But not under a sleep spell?
      !npc->get_flag(Obj_flags::asleep) &&
      gwin->is_main_actor_inside() &&
      !Bg_dont_wake(gwin, npc) &&
      npc->distance(gwin->get_main_actor()) < 6 && rand()%3 != 0)
    {
          // Trick:  Stand, but stay in
          //   sleep_schedule.
    npc->get_schedule()->ending(Schedule::stand);
    npc->say(first_awakened, last_awakened);
          // In 10 seconds, go back to sleep.
    npc->start(0, 10000);
    extra_delay = 11; // And don't run Usecode while up.
    }
      
  else if (!(curtime < wait_until) && !cheat.in_map_editor() && 
          // Do it 50% of the time OR if
          //   a rabbit (SI start).
     (rand()%2 == 1 || npc->get_shapenum() == 811)  &&
          // And not for party members.
      !npc->is_in_party() &&
          // And not if walking to sched. spot.
     sched != Schedule::walk_to_schedule &&
          // And not for patrollers/monsters
          //  in SI. !!Guessing.
     (Game::get_game_type() != SERPENT_ISLE ||
      (sched != Schedule::patrol &&
       sched != Schedule::wait &&
       sched != Schedule::horiz_pace &&
       sched != Schedule::vert_pace &&
       !npc->is_monster())))
        
    {
    int ucfun = npc->get_usecode();
    gwin->get_usecode()->call_usecode(ucfun, npc,
          Usecode_machine::npc_proximity);
    extra_delay += 3;
    curtime = Game::get_ticks();// Time may have passed.
    }
  add(curtime, npc, extra_delay); // Add back for next time.
  }

/*
 *  Set a time to wait for before running any usecodes.  This is to
 *  skip all the text events that would happen at the end of a conver-
 *  sation.
 */

void Npc_proximity_handler::wait
  (
  int secs      // # of seconds.
  )
  {
  wait_until = Game::get_ticks() + 1000*secs;
  }

/*
 *  Fill a list with all the nearby NPC's.
 */

void Npc_proximity_handler::get_all
  (
  Actor_queue& alist      // They're appended to this.
  )
  {
  Time_queue_iterator next(gwin->get_tqueue(), this);
  Time_sensitive *obj;
  long data;      // NPC is the data.
  while (next(obj, data))
    alist.push((Npc_actor *) data);
  }

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