server/server/main.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2001-2003 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at <crossfire@schmorp.de>
*/

#include <global.h>
#include <object.h>
#include <tod.h>

#ifdef HAVE_DES_H
# include <des.h>
#else
# ifdef HAVE_CRYPT_H
#  include <crypt.h>
# endif
#endif

#include <sproto.h>
#include <time.h>

#include <../random_maps/random_map.h>
#include <../random_maps/rproto.h>
#include "path.h"

static char days[7][4] = {
  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};

void
version (object *op)
{
  if (op != NULL)
    clear_win_info (op);

  new_draw_info_format (NDI_UNIQUE, 0, op, "This is Crossfire v%s", VERSION);

/* If in a socket, don't print out the list of authors.  It confuses the
 * crossclient program.
 */
  if (op == NULL)
    return;
  new_draw_info (NDI_UNIQUE, 0, op, "Authors and contributors to this program:");
  new_draw_info (NDI_UNIQUE, 0, op, "mwedel@sonic.net (Mark Wedel)");
  new_draw_info (NDI_UNIQUE, 0, op, "frankj@ifi.uio.no (Frank Tore Johansen)");
  new_draw_info (NDI_UNIQUE, 0, op, "kjetilho@ifi.uio.no (Kjetil Torgrim Homme)");
  new_draw_info (NDI_UNIQUE, 0, op, "tvangod@ecst.csuchico.edu (Tyler Van Gorder)");
  new_draw_info (NDI_UNIQUE, 0, op, "elmroth@cd.chalmers.se (Tony Elmroth)");
  new_draw_info (NDI_UNIQUE, 0, op, "dougal.scott@fcit.monasu.edu.au (Dougal Scott)");
  new_draw_info (NDI_UNIQUE, 0, op, "wchuang@athena.mit.edu (William)");
  new_draw_info (NDI_UNIQUE, 0, op, "ftww@cs.su.oz.au (Geoff Bailey)");
  new_draw_info (NDI_UNIQUE, 0, op, "jorgens@flipper.pvv.unit.no (Kjetil Wiekhorst Jxrgensen)");
  new_draw_info (NDI_UNIQUE, 0, op, "c.blackwood@rdt.monash.edu.au (Cameron Blackwood)");
  new_draw_info (NDI_UNIQUE, 0, op, "jtraub+@cmu.edu (Joseph L. Traub)");
  new_draw_info (NDI_UNIQUE, 0, op, "rgg@aaii.oz.au (Rupert G. Goldie)");
  new_draw_info (NDI_UNIQUE, 0, op, "eanders+@cmu.edu (Eric A. Anderson)");
  new_draw_info (NDI_UNIQUE, 0, op, "eneq@Prag.DoCS.UU.SE (Rickard Eneqvist)");
  new_draw_info (NDI_UNIQUE, 0, op, "Jarkko.Sonninen@lut.fi (Jarkko Sonninen)");
  new_draw_info (NDI_UNIQUE, 0, op, "kholland@sunlab.cit.cornell.du (Karl Holland)");
  new_draw_info (NDI_UNIQUE, 0, op, "vick@bern.docs.uu.se (Mikael Lundgren)");
  new_draw_info (NDI_UNIQUE, 0, op, "mol@meryl.csd.uu.se (Mikael Olsson)");
  new_draw_info (NDI_UNIQUE, 0, op, "Tero.Haatanen@lut.fi (Tero Haatanen)");
  new_draw_info (NDI_UNIQUE, 0, op, "ylitalo@student.docs.uu.se (Lasse Ylitalo)");
  new_draw_info (NDI_UNIQUE, 0, op, "anipa@guru.magic.fi (Niilo Neuvo)");
  new_draw_info (NDI_UNIQUE, 0, op, "mta@modeemi.cs.tut.fi (Markku J{rvinen)");
  new_draw_info (NDI_UNIQUE, 0, op, "meunier@inf.enst.fr (Sylvain Meunier)");
  new_draw_info (NDI_UNIQUE, 0, op, "jfosback@darmok.uoregon.edu (Jason Fosback)");
  new_draw_info (NDI_UNIQUE, 0, op, "cedman@capitalist.princeton.edu (Carl Edman)");
  new_draw_info (NDI_UNIQUE, 0, op, "henrich@crh.cl.msu.edu (Charles Henrich)");
  new_draw_info (NDI_UNIQUE, 0, op, "schmid@fb3-s7.math.tu-berlin.de (Gregor Schmid)");
  new_draw_info (NDI_UNIQUE, 0, op, "quinet@montefiore.ulg.ac.be (Raphael Quinet)");
  new_draw_info (NDI_UNIQUE, 0, op, "jam@modeemi.cs.tut.fi (Jari Vanhala)");
  new_draw_info (NDI_UNIQUE, 0, op, "kivinen@joker.cs.hut.fi (Tero Kivinen)");
  new_draw_info (NDI_UNIQUE, 0, op, "peterm@soda.berkeley.edu (Peter Mardahl)");
  new_draw_info (NDI_UNIQUE, 0, op, "matt@cs.odu.edu (Matthew Zeher)");
  new_draw_info (NDI_UNIQUE, 0, op, "srt@sun-dimas.aero.org (Scott R. Turner)");
  new_draw_info (NDI_UNIQUE, 0, op, "huma@netcom.com (Ben Fennema)");
  new_draw_info (NDI_UNIQUE, 0, op, "njw@cs.city.ac.uk (Nick Williams)");
  new_draw_info (NDI_UNIQUE, 0, op, "Wacren@Gin.ObsPM.Fr (Laurent Wacrenier)");
  new_draw_info (NDI_UNIQUE, 0, op, "thomas@astro.psu.edu (Brian Thomas)");
  new_draw_info (NDI_UNIQUE, 0, op, "jsm@axon.ksc.nasa.gov (John Steven Moerk)");
  new_draw_info (NDI_UNIQUE, 0, op, "Delbecq David       [david.delbecq@mailandnews.com]");
  new_draw_info (NDI_UNIQUE, 0, op, "Chachkoff Yann      [yann.chachkoff@mailandnews.com]\n");
  new_draw_info (NDI_UNIQUE, 0, op, "Images and art:");
  new_draw_info (NDI_UNIQUE, 0, op, "Peter Gardner");
  new_draw_info (NDI_UNIQUE, 0, op, "David Gervais       [david_eg@mail.com]");
  new_draw_info (NDI_UNIQUE, 0, op, "Mitsuhiro Itakura   [ita@gold.koma.jaeri.go.jp]");
  new_draw_info (NDI_UNIQUE, 0, op, "Hansjoerg Malthaner [hansjoerg.malthaner@danet.de]");
  new_draw_info (NDI_UNIQUE, 0, op, "Mårten Woxberg      [maxmc@telia.com]");
  new_draw_info (NDI_UNIQUE, 0, op, "And many more!");
}

void
info_keys (object *op)
{
  clear_win_info (op);
  new_draw_info (NDI_UNIQUE, 0, op, "Push `hjklynub' to walk in a direction.");
  new_draw_info (NDI_UNIQUE, 0, op, "Shift + dir = fire, Ctrl + dir = run");
  new_draw_info (NDI_UNIQUE, 0, op, "(To fire at yourself, hit `.'");
  new_draw_info (NDI_UNIQUE, 0, op, "To attack, walk into the monsters.");
  new_draw_info (NDI_UNIQUE, 0, op, "\"  = speak        ' = extended command");
  new_draw_info (NDI_UNIQUE, 0, op, "i  = inventory    , = get         : = look");
  new_draw_info (NDI_UNIQUE, 0, op, "<> = rotate       d = drop        ? = help");
  new_draw_info (NDI_UNIQUE, 0, op, "a  = apply        A = apply below t = throw");
  new_draw_info (NDI_UNIQUE, 0, op, "e  = examine      E = exa below   @ = autopick");
  new_draw_info (NDI_UNIQUE, 0, op, "C  = configure    s = brace       v = version");
  new_draw_info (NDI_UNIQUE, 0, op, "+- = change range <tab> = browse spells");
  new_draw_info (NDI_UNIQUE, 0, op, "x  = change inventory type");
  new_draw_info (NDI_UNIQUE, 0, op, "Mouse: L = examine,  M = apply,  R = drop/get");
  new_draw_info (NDI_UNIQUE, 0, op, "'help  = info about extended commands.");
  new_draw_info (NDI_UNIQUE, 0, op, "Ctrl-R = refresh   Ctrl-C = clear");
  new_draw_info (NDI_UNIQUE, 0, op, "You can type a number before most commands.");
  new_draw_info (NDI_UNIQUE, 0, op, "(For instance 3d drops 3 items.)");
}

void
start_info (object *op)
{
  char buf[MAX_BUF];

  sprintf (buf, "Welcome to Crossfire, v%s!", VERSION);
  new_draw_info (NDI_UNIQUE, 0, op, buf);
  new_draw_info (NDI_UNIQUE, 0, op, "Press `?' for help");
  new_draw_info (NDI_UNIQUE, 0, op, " ");
  new_draw_info_format (NDI_UNIQUE | NDI_ALL | NDI_DK_ORANGE, 5, op, "%s entered the game.", &op->name);
  if (!op->contr->name_changed)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Note that you must set your name with the name");
      new_draw_info (NDI_UNIQUE, 0, op, "command to enter the highscore list.");
      new_draw_info (NDI_UNIQUE, 0, op, "(You can also use the crossfire.name X-resource.)");
    }
}

/* Really, there is no reason to crypt the passwords  any system.  But easier
 * to just leave this enabled for backward compatibility.  Put the
 * simple case at top - no encryption - makes it easier to read.
 */
char *
crypt_string (char *str, char *salt)
{
#if (defined(__FreeBSD__) && !defined(HAVE_LIBDES))
  return (str);
#else
  static char *c = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
  char s[2];

  if (salt == NULL)
    s[0] = c[RANDOM () % (int) strlen (c)], s[1] = c[RANDOM () % (int) strlen (c)];
  else
    s[0] = salt[0], s[1] = salt[1];

# ifdef HAVE_LIBDES
  return (char *) des_crypt (str, s);
# endif
  /* Default case - just use crypt */
  return (char *) crypt (str, s);
#endif
}

int
check_password (char *typed, char *crypted)
{
  return !strcmp (crypt_string (typed, crypted), crypted);
}

/* This is a basic little function to put the player back to his
 * savebed.  We do some error checking - its possible that the
 * savebed map may no longer exist, so we make sure the player
 * goes someplace.
 */
void
enter_player_savebed (object *op)
{
  maptile *oldmap = op->map;
  object *tmp;

  tmp = object::create ();

  EXIT_PATH (tmp) = op->contr->savebed_map;
  EXIT_X (tmp) = op->contr->bed_x;
  EXIT_Y (tmp) = op->contr->bed_y;
  enter_exit (op, tmp);
  /* If the player has not changed maps and the name does not match
   * that of the savebed, his savebed map is gone.  Lets go back
   * to the emergency path.  Update what the players savebed is
   * while we're at it.
   */
  if (oldmap == op->map && strcmp (op->contr->savebed_map, oldmap->path))
    {
      LOG (llevDebug, "Player %s savebed location %s is invalid - going to emergency location (%s)\n",
           settings.emergency_mapname, &op->name, op->contr->savebed_map);
      strcpy (op->contr->savebed_map, settings.emergency_mapname);
      op->contr->bed_x = settings.emergency_x;
      op->contr->bed_y = settings.emergency_y;
      EXIT_PATH (tmp) = op->contr->savebed_map;
      EXIT_X (tmp) = op->contr->bed_x;
      EXIT_Y (tmp) = op->contr->bed_y;
      enter_exit (op, tmp);
    }

  tmp->destroy ();
}

/* All this really is is a glorified remove_object that also updates
 * the counts on the map if needed.
 */
void
leave_map (object *op)
{
  maptile *oldmap = op->map;

  op->remove ();

  if (oldmap)
    {
      if (!op->contr->hidden)
        oldmap->players--;

      if (oldmap->players <= 0)
        /* can be less than zero due to errors in tracking this */
        set_map_timeout (oldmap);
    }
}

/*
 *  enter_map():  Moves the player and pets from current map (if any) to
 * new map.  map, x, y must be set.  map is the map we are moving the
 * player to - it could be the map he just came from if the load failed for
 * whatever reason.  If default map coordinates are to be used, then
 * the function that calls this should figure them out.
 */
static void
enter_map (object *op, maptile *newmap, int x, int y)
{
  maptile *oldmap = op->map;

  if (out_of_map (newmap, x, y))
    {
      LOG (llevError, "enter_map: supplied coordinates are not within the map! (%s: %d, %d)\n", newmap->path, x, y);
      x = MAP_ENTER_X (newmap);
      y = MAP_ENTER_Y (newmap);
      if (out_of_map (newmap, x, y))
        {
          LOG (llevError, "enter_map: map %s provides invalid default enter location (%d, %d) > (%d, %d)\n",
               newmap->path, x, y, MAP_WIDTH (newmap), MAP_HEIGHT (newmap));
          new_draw_info (NDI_UNIQUE, 0, op, "The exit is closed");
          return;
        }
    }

  /* try to find a spot for the player */
  if (ob_blocked (op, newmap, x, y))
    {                           /* First choice blocked */
      /* We try to find a spot for the player, starting closest in.
       * We could use find_first_free_spot, but that doesn't randomize it at all,
       * So for example, if the north space is free, you would always end up there even
       * if other spaces around are available.
       * Note that for the second and third calls, we could start at a position other
       * than one, but then we could end up on the other side of walls and so forth.
       */
      int i = find_free_spot (op, newmap, x, y, 1, SIZEOFFREE1 + 1);

      if (i == -1)
        {
          i = find_free_spot (op, newmap, x, y, 1, SIZEOFFREE2 + 1);
          if (i == -1)
            i = find_free_spot (op, newmap, x, y, 1, SIZEOFFREE);
        }

      if (i != -1)
        {
          x += freearr_x[i];
          y += freearr_y[i];
        }
      else
        {
          /* not much we can do in this case. */
          LOG (llevInfo, "enter_map: Could not find free spot for player - will dump on top of object (%s: %d, %d)\n", newmap->path, x, y);
        }
    }                           /* end if looking for free spot */

  if (op->map)
    if (INVOKE_MAP (LEAVE, op->map, ARG_PLAYER (op->contr)))
      return;

  if (INVOKE_PLAYER (MAP_CHANGE, op->contr, ARG_MAP (newmap), ARG_INT (x), ARG_INT (y)))
    return;

  if (INVOKE_MAP (ENTER, newmap, ARG_PLAYER (op->contr), ARG_INT (x), ARG_INT (y)))
    return;

  /* If it is a player login, he has yet to be inserted anyplace.
   * otherwise, we need to deal with removing the player here.
   */
  op->remove ();

  /* remove_ob clears these so they must be reset after the remove_ob call */
  op->x = x;
  op->y = y;
  op->map = newmap;

  insert_ob_in_map (op, op->map, NULL, INS_NO_WALK_ON);

  if (!op->contr->hidden)
    newmap->players++;

  newmap->timeout = 0;
  op->enemy = NULL;

  if (op->contr)
    {
      strcpy (op->contr->maplevel, newmap->path);
      op->contr->count = 0;
    }

  /* Update any golems */
  if (op->type == PLAYER && op->contr->ranges[range_golem] != NULL)
    {
      int i = find_free_spot (op->contr->ranges[range_golem], newmap,
                              x, y, 1, SIZEOFFREE);

      op->contr->ranges[range_golem]->remove ();

      if (i == -1)
        {
          remove_friendly_object (op->contr->ranges[range_golem]);
          op->contr->ranges[range_golem]->destroy ();
          op->contr->ranges[range_golem] = 0;
        }
      else
        {
          for (object *tmp = op->contr->ranges[range_golem]; tmp != NULL; tmp = tmp->more)
            {
              tmp->x = x + freearr_x[i] + (tmp->arch == NULL ? 0 : tmp->arch->clone.x);
              tmp->y = y + freearr_y[i] + (tmp->arch == NULL ? 0 : tmp->arch->clone.y);
              tmp->map = newmap;
            }

          insert_ob_in_map (op->contr->ranges[range_golem], newmap, NULL, 0);
          op->contr->ranges[range_golem]->direction =
            find_dir_2 (op->x - op->contr->ranges[range_golem]->x, op->y - op->contr->ranges[range_golem]->y);
        }
    }

  op->direction = 0;

  /* since the players map is already loaded, we don't need to worry
   * about pending objects.
   */
  remove_all_pets (newmap);

  /* If the player is changing maps, we need to do some special things
   * Do this after the player is on the new map - otherwise the force swap of the
   * old map does not work.
   */
  if (oldmap != newmap)
    {
      if (oldmap)               /* adjust old map */
        {
          oldmap->players--;

          if (oldmap->players <= 0)     /* can be less than zero due to errors in tracking this */
            set_map_timeout (oldmap);
        }
    }
}

void
set_map_timeout (maptile *oldmap)
{
#if MAP_MAXTIMEOUT
  oldmap->timeout = MAP_TIMEOUT (oldmap);
  /* Do MINTIMEOUT first, so that MAXTIMEOUT is used if that is
   * lower than the min value.
   */
# if MAP_MINTIMEOUT
  if (oldmap->timeout < MAP_MINTIMEOUT)
    oldmap->timeout = MAP_MINTIMEOUT;
# endif

  if (oldmap->timeout > MAP_MAXTIMEOUT)
    oldmap->timeout = MAP_MAXTIMEOUT;

#else
  /* save out the map */
  swap_map (oldmap);
#endif /* MAP_MAXTIMEOUT */
}


/* clean_path takes a path and replaces all / with _
 * We do a strcpy so that we do not change the original string.
 */
char *
clean_path (const char *file)
{
  static char newpath[MAX_BUF], *cp;
  assign (newpath, file);

  for (cp = newpath; *cp != '\0'; cp++)
    if (*cp == '/')
      *cp = '_';

  return newpath;
}


/* unclean_path takes a path and replaces all _ with /
 * This basically undoes clean path.
 * We do a strcpy so that we do not change the original string.
 * We are smart enough to start after the last / in case we
 * are getting passed a string that points to a unique map
 * path.
 */
char *
unclean_path (const char *src)
{
  static char newpath[MAX_BUF], *cp;

  cp = strrchr (src, '/');
  assign (newpath, cp ? cp + 1 : src);

  for (cp = newpath; *cp != '\0'; cp++)
    if (*cp == '_')
      *cp = '/';

  return newpath;
}


/* The player is trying to enter a randomly generated map.  In this case, generate the
 * random map as needed.
 */

static void
enter_random_map (object *pl, object *exit_ob)
{
  maptile *new_map;
  char newmap_name[HUGE_BUF], *cp;
  static int reference_number = 0;
  RMParms rp;

  memset (&rp, 0, sizeof (RMParms));
  rp.Xsize = -1;
  rp.Ysize = -1;
  rp.region = get_region_by_map (exit_ob->map);
  if (exit_ob->msg)
    set_random_map_variable (&rp, exit_ob->msg);
  rp.origin_x = exit_ob->x;
  rp.origin_y = exit_ob->y;
  strcpy (rp.origin_map, pl->map->path);

  /* If we have a final_map, use it as a base name to give some clue
   * as where the player is.  Otherwise, use the origin map.
   */
  sprintf (newmap_name, "/random%s+%04d",
           *rp.final_map ? rp.final_map : rp.origin_map,
           reference_number++);

  /* now to generate the actual map. */
  new_map = generate_random_map (newmap_name, &rp);

  /* Update the exit_ob so it now points directly at the newly created
   * random maps.  Not that it is likely to happen, but it does mean that a
   * exit in a unique map leading to a random map will not work properly.
   * It also means that if the created random map gets reset before
   * the exit leading to it, that the exit will no longer work.
   */
  if (new_map)
    {
      int x, y;

      x = EXIT_X (exit_ob) = MAP_ENTER_X (new_map);
      y = EXIT_Y (exit_ob) = MAP_ENTER_Y (new_map);
      EXIT_PATH (exit_ob) = newmap_name;
      strcpy (new_map->path, newmap_name);
      enter_map (pl, new_map, x, y);
    }
}

/* The player is trying to enter a non-randomly generated template map.  In this
 * case, use a map file for a template
 */

static void
enter_fixed_template_map (object *pl, object *exit_ob)
{
  maptile *new_map;
  char tmpnum[32], exitpath[HUGE_BUF], resultname[HUGE_BUF], tmpstring[HUGE_BUF], *sourcemap;
  const char *new_map_name;

  /* Split the exit path string into two parts, one
   * for where to store the map, and one for were
   * to generate the map from.
   */
  snprintf (exitpath, sizeof (exitpath), "%s", EXIT_PATH (exit_ob) + 2);
  sourcemap = strchr (exitpath, '!');
  if (!sourcemap)
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "The %s is closed.", &exit_ob->name);
      /* Should only occur when no source map is set.
       */
      LOG (llevError, "enter_fixed_template_map: Exit %s (%d,%d) on map %s has no source template.\n",
           &exit_ob->name, exit_ob->x, exit_ob->y, exit_ob->map->path);
      return;
    }

  *sourcemap++ = '\0';

  /* If we are not coming from a template map, we can use relative directories
   * for the map to generate from.
   */
  if (!exit_ob->map->templatemap)
    sourcemap = path_combine_and_normalize (exit_ob->map->path, sourcemap);

  /* Do replacement of %x, %y, and %n to the x coord of the exit, the y coord
   * of the exit, and the name of the map the exit is on, respectively.
   */
  sprintf (tmpnum, "%d", exit_ob->x);
  replace (exitpath, "%x", tmpnum, resultname, sizeof (resultname));

  sprintf (tmpnum, "%d", exit_ob->y);
  sprintf (tmpstring, "%s", resultname);
  replace (tmpstring, "%y", tmpnum, resultname, sizeof (resultname));

  sprintf (tmpstring, "%s", resultname);
  replace (tmpstring, "%n", exit_ob->map->name, resultname, sizeof (resultname));

  /* If we are coming from another template map, use reletive paths unless 
   * indicated otherwise.
   */
  if (exit_ob->map->templatemap && (resultname[0] != '/'))
    new_map_name = path_combine_and_normalize (exit_ob->map->path, resultname);
  else
    new_map_name = create_template_pathname (resultname);

  /* Attempt to load the map, if unable to, then
   * create the map from the template.
   */
  new_map = ready_map_name (new_map_name, MAP_PLAYER_UNIQUE);
  if (!new_map)
    {
      new_map = load_original_map (create_pathname (sourcemap), MAP_PLAYER_UNIQUE);
      if (new_map)
        fix_auto_apply (new_map);
    }

  if (new_map)
    {
      /* set the path of the map to where it should be
       * so we don't just save over the source map.
       */
      strcpy (new_map->path, new_map_name);
      new_map->templatemap = 1;
      enter_map (pl, new_map, EXIT_X (exit_ob), EXIT_Y (exit_ob));
    }
  else
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "The %s is closed.", &exit_ob->name);
      /* Should only occur when an invalid source map is set.
       */
      LOG (llevDebug, "enter_fixed_template_map: Exit %s (%d,%d) on map %s leads no where.\n",
           &exit_ob->name, exit_ob->x, exit_ob->y, exit_ob->map->path);
    }
}

/* The player is trying to enter a randomly generated template map.  In this
 * case, generate the map as needed.
 */

static void
enter_random_template_map (object *pl, object *exit_ob)
{
  maptile *new_map;
  char tmpnum[32], resultname[HUGE_BUF], tmpstring[HUGE_BUF];
  const char *new_map_name;
  RMParms rp;

  /* Do replacement of %x, %y, and %n to the x coord of the exit, the y coord
   * of the exit, and the name of the map the exit is on, respectively.
   */
  sprintf (tmpnum, "%d", exit_ob->x);
  replace (EXIT_PATH (exit_ob) + 3, "%x", tmpnum, resultname, sizeof (resultname));

  sprintf (tmpnum, "%d", exit_ob->y);
  sprintf (tmpstring, "%s", resultname);
  replace (tmpstring, "%y", tmpnum, resultname, sizeof (resultname));

  sprintf (tmpstring, "%s", resultname);
  replace (tmpstring, "%n", exit_ob->map->name, resultname, sizeof (resultname));

  /* If we are coming from another template map, use reletive paths unless 
   * indicated otherwise.
   */
  if (exit_ob->map->templatemap && (resultname[0] != '/'))
    {
      new_map_name = path_combine_and_normalize (exit_ob->map->path, resultname);
    }
  else
    {
      new_map_name = create_template_pathname (resultname);
    }

  new_map = ready_map_name (new_map_name, MAP_PLAYER_UNIQUE);
  if (!new_map)
    {
      memset (&rp, 0, sizeof (RMParms));
      rp.Xsize = -1;
      rp.Ysize = -1;
      rp.region = get_region_by_map (exit_ob->map);
      if (exit_ob->msg)
        set_random_map_variable (&rp, exit_ob->msg);
      rp.origin_x = exit_ob->x;
      rp.origin_y = exit_ob->y;
      strcpy (rp.origin_map, pl->map->path);

      /* now to generate the actual map. */
      new_map = generate_random_map (new_map_name, &rp);
    }


  /* Update the exit_ob so it now points directly at the newly created
   * random maps.  Not that it is likely to happen, but it does mean that a
   * exit in a unique map leading to a random map will not work properly.
   * It also means that if the created random map gets reset before
   * the exit leading to it, that the exit will no longer work.
   */
  if (new_map)
    {
      int x, y;

      x = EXIT_X (exit_ob) = MAP_ENTER_X (new_map);
      y = EXIT_Y (exit_ob) = MAP_ENTER_Y (new_map);
      new_map->templatemap = 1;
      enter_map (pl, new_map, x, y);
    }
}


/* Code to enter/detect a character entering a unique map.
 */
static void
enter_unique_map (object *op, object *exit_ob)
{
  char apartment[HUGE_BUF];
  maptile *newmap;

  if (EXIT_PATH (exit_ob)[0] == '/')
    {
      sprintf (apartment, "%s/%s/%s/%s", settings.localdir, settings.playerdir, &op->name, clean_path (EXIT_PATH (exit_ob)));
      newmap = ready_map_name (apartment, MAP_PLAYER_UNIQUE);
      if (!newmap)
        {
          newmap = load_original_map (create_pathname (EXIT_PATH (exit_ob)), MAP_PLAYER_UNIQUE);
          if (newmap)
            fix_auto_apply (newmap);
        }
    }
  else
    {                           /* relative directory */
      char reldir[HUGE_BUF], tmpc[HUGE_BUF], *cp;

      if (exit_ob->map->unique)
        {

          strcpy (reldir, unclean_path (exit_ob->map->path));

          /* Need to copy this over, as clean_path only has one static return buffer */
          strcpy (tmpc, clean_path (reldir));
          /* Remove final component, if any */
          if ((cp = strrchr (tmpc, '_')) != NULL)
            *cp = 0;

          sprintf (apartment, "%s/%s/%s/%s_%s", settings.localdir, settings.playerdir, &op->name, tmpc, clean_path (EXIT_PATH (exit_ob)));

          newmap = ready_map_name (apartment, MAP_PLAYER_UNIQUE);
          if (!newmap)
            {
              newmap = load_original_map (create_pathname (path_combine_and_normalize (reldir, EXIT_PATH (exit_ob))), MAP_PLAYER_UNIQUE);
              if (newmap)
                fix_auto_apply (newmap);
            }
        }
      else
        {
          /* The exit is unique, but the map we are coming from is not unique.  So
           * use the basic logic - don't need to demangle the path name
           */
          sprintf (apartment, "%s/%s/%s/%s", settings.localdir,
                   settings.playerdir, &op->name, clean_path (path_combine_and_normalize (exit_ob->map->path, EXIT_PATH (exit_ob))));
          newmap = ready_map_name (apartment, MAP_PLAYER_UNIQUE);
          if (!newmap)
            {
              newmap = ready_map_name (path_combine_and_normalize (exit_ob->map->path, EXIT_PATH (exit_ob)), 0);
              if (newmap)
                fix_auto_apply (newmap);
            }
        }
    }

  if (newmap)
    {
      strcpy (newmap->path, apartment);
      newmap->unique = 1;
      enter_map (op, newmap, EXIT_X (exit_ob), EXIT_Y (exit_ob));
    }
  else
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "The %s is closed.", &exit_ob->name);
      /* Perhaps not critical, but I would think that the unique maps
       * should be new enough this does not happen.  This also creates
       * a strange situation where some players could perhaps have visited
       * such a map before it was removed, so they have the private
       * map, but other players can't get it anymore.
       */
      LOG (llevDebug, "enter_unique_map: Exit %s (%d,%d) on map %s is leads no where.\n",
           &exit_ob->name, exit_ob->x, exit_ob->y, exit_ob->map->path);
    }

}


/* Tries to move 'op' to exit_ob.  op is the character or monster that is
 * using the exit, where exit_ob is the exit object (boat, door, teleporter,
 * etc.)  if exit_ob is null, then op->contr->maplevel contains that map to
 * move the object to.  This is used when loading the player.
 *
 * Largely redone by MSW 2001-01-21 - this function was overly complex
 * and had some obscure bugs.
 */

void
enter_exit (object *op, object *exit_ob)
{
#define PORTAL_DESTINATION_NAME "Town portal destination"       /* this one should really be in a header file */
  object *tmp;

  /* It may be nice to support other creatures moving across
   * exits, but right now a lot of the code looks at op->contr,
   * so that is an RFE.
   */
  if (op->type != PLAYER)
    return;

  /* First, lets figure out what map the player is going to go to */
  if (exit_ob)
    {
      /* check to see if we make a template map */
      if (EXIT_PATH (exit_ob) && EXIT_PATH (exit_ob)[1] == '@')
        {
          if (EXIT_PATH (exit_ob)[2] == '!')
            {
              /* generate a template map randomly */
              enter_random_template_map (op, exit_ob);
            }
          else
            {
              /* generate a template map from a fixed template */
              enter_fixed_template_map (op, exit_ob);
            }
        }
      /* check to see if we make a randomly generated map */
      else if (EXIT_PATH (exit_ob) && EXIT_PATH (exit_ob)[1] == '!')
        {
          enter_random_map (op, exit_ob);
        }
      else if (QUERY_FLAG (exit_ob, FLAG_UNIQUE))
        {
          enter_unique_map (op, exit_ob);
        }
      else
        {
          int x = EXIT_X (exit_ob), y = EXIT_Y (exit_ob);

          /* 'Normal' exits that do not do anything special
           * Simple enough we don't need another routine for it.
           */
          maptile *newmap;

          if (exit_ob->map)
            {
              newmap = ready_map_name (path_combine_and_normalize (exit_ob->map->path, EXIT_PATH (exit_ob)), 0);
              /* Random map was previously generated, but is no longer about.  Lets generate a new
               * map.
               */
              if (!newmap && !strncmp (EXIT_PATH (exit_ob), "/random/", 8))
                {
                  /* Maps that go down have a message set.  However, maps that go
                   * up, don't.  If the going home has reset, there isn't much
                   * point generating a random map, because it won't match the maps.
                   */
                  if (exit_ob->msg)
                    {
                      enter_random_map (op, exit_ob);
                    }
                  else
                    {
                      new_draw_info_format (NDI_UNIQUE, 0, op, "The %s is closed.", &exit_ob->name);
                      return;
                    }

                  /* For exits that cause damages (like pits).  Don't know if any
                   * random maps use this or not.
                   */
                  if (exit_ob->stats.dam && op->type == PLAYER)
                    hit_player (op, exit_ob->stats.dam, exit_ob, exit_ob->attacktype, 1);
                  return;
                }
            }
          else
            {
              /* For word of recall and other force objects
               * They contain the full pathname of the map to go back to,
               * so we don't need to normalize it.
               * But we do need to see if it is unique or not 
               */
              if (!strncmp (EXIT_PATH (exit_ob), settings.localdir, strlen (settings.localdir)))
                newmap = ready_map_name (EXIT_PATH (exit_ob), MAP_PLAYER_UNIQUE);
              else
                newmap = ready_map_name (EXIT_PATH (exit_ob), 0);
            }
          if (!newmap)
            {
              if (exit_ob->name)
                new_draw_info_format (NDI_UNIQUE, 0, op, "The %s is closed.", &exit_ob->name);
              /* don't cry to momma if name is not set - as in tmp objects
               * used by the savebed code and character creation */
              return;
            }

          /* This supports the old behaviour, but it really should not be used.
           * I will note for example that with this method, it is impossible to
           * set 0,0 destination coordinates.  Really, if we want to support
           * using the new maps default coordinates, the exit ob should use
           * something like -1, -1 so it is clear to do that.
           */
          if (x == 0 && y == 0)
            {
              x = MAP_ENTER_X (newmap);
              y = MAP_ENTER_Y (newmap);
              LOG (llevDebug, "enter_exit: Exit %s (%d,%d) on map %s is 0 destination coordinates\n",
                   &exit_ob->name, exit_ob->x, exit_ob->y, exit_ob->map ? exit_ob->map->path : "<nil>");
            }

          /* mids 02/13/2002 if exit is damned, update players death & WoR home-position and delete town portal */
          if (QUERY_FLAG (exit_ob, FLAG_DAMNED))
            {
              /* remove an old force with a slaying field == PORTAL_DESTINATION_NAME */
              for (tmp = op->inv; tmp != NULL; tmp = tmp->below)
                {
                  if (tmp->type == FORCE && tmp->slaying && !strcmp (tmp->slaying, PORTAL_DESTINATION_NAME))
                    break;
                }
              if (tmp)
                {
                  tmp->remove ();
                  tmp->destroy ();
                }

              strcpy (op->contr->savebed_map, path_combine_and_normalize (exit_ob->map->path, EXIT_PATH (exit_ob)));
              op->contr->bed_x = EXIT_X (exit_ob), op->contr->bed_y = EXIT_Y (exit_ob);
              save_player (op, 1);
              /* LOG(llevDebug,"enter_exit: Taking damned exit %s to (%d,%d) on map %s\n",
               * exit_ob->name?exit_ob->name:"(none)", exit_ob->x, exit_ob->y,  
               * path_combine_and_normalize(exit_ob->map->path, EXIT_PATH(exit_ob))); */
            }

          enter_map (op, newmap, x, y);
        }
      /* For exits that cause damages (like pits) */
      if (exit_ob->stats.dam && op->type == PLAYER)
        hit_player (op, exit_ob->stats.dam, exit_ob, exit_ob->attacktype, 1);
    }
  else
    {
      int flags = 0;
      maptile *newmap;

      /* Hypothetically, I guess its possible that a standard map matches
       * the localdir, but that seems pretty unlikely - unlikely enough that
       * I'm not going to attempt to try to deal with that possibility.
       * We use the fact that when a player saves on a unique map, it prepends
       * the localdir to that name.  So its an easy way to see of the map is
       * unique or not.
       */
      if (!strncmp (op->contr->maplevel, settings.localdir, strlen (settings.localdir)))
        flags = MAP_PLAYER_UNIQUE;

      /* newmap returns the map (if already loaded), or loads it for
       * us.
       */
      newmap = ready_map_name (op->contr->maplevel, flags);
      if (!newmap)
        {
          LOG (llevError, "enter_exit: Pathname to map does not exist! (%s)\n", op->contr->maplevel);
          newmap = ready_map_name (settings.emergency_mapname, 0);
          op->x = settings.emergency_x;
          op->y = settings.emergency_y;
          /* If we can't load the emergency map, something is probably really
           * screwed up, so bail out now.
           */
          if (!newmap)
            {
              LOG (llevError, "enter_exit: could not load emergency map? Fatal error\n");
              abort ();
            }
        }

      enter_map (op, newmap, op->x, op->y);
    }
}

/* process_players1 and process_players2 do all the player related stuff.
 * I moved it out of process events and process_map.  This was to some
 * extent for debugging as well as to get a better idea of the time used
 * by the various functions.  process_players1() does the processing before
 * objects have been updated, process_players2() does the processing that
 * is needed after the players have been updated.
 */
static void
process_players1 ()
{
  int flag;
  /* Basically, we keep looping until all the players have done their actions. */
  for (flag = 1; flag != 0;)
    {
      flag = 0;
      for (player *plnext, *pl = first_player; pl; pl = plnext)
        {
          plnext = pl->next;    /* In case a player exits the game in handle_player() */

          if (!pl->ob)
            continue;

          if (pl->ob->speed_left > 0)
            {
              if (handle_newcs_player (pl->ob))
                flag = 1;
            }                   /* end if player has speed left */

          /* If the player is not actively playing, don't make a
           * backup save - nothing to save anyway.  Plus, the
           * map may not longer be valid.  This can happen when the
           * player quits - they exist for purposes of tracking on the map,
           * but don't actually reside on any actual map.
           */
          if (QUERY_FLAG (pl->ob, FLAG_REMOVED))
            continue;

#ifdef AUTOSAVE
          /* check for ST_PLAYING state so that we don't try to save off when
           * the player is logging in.
           */
          if ((pl->last_save_tick + AUTOSAVE) < (uint32) pticks && pl->ns->state == ST_PLAYING)
            {
              save_player (pl->ob, 1);
              pl->last_save_tick = pticks;
            }
#endif
        }                       /* end of for loop for all the players */
    }                           /* for flag */

  for (player *pl = first_player; pl; pl = pl->next)
    {
      if (settings.casting_time)
        {
          if (pl->ob->casting_time > 0)
            {
              pl->ob->casting_time--;
              pl->ob->start_holding = 1;
            }

          /* set spell_state so we can update the range in stats field */
          if ((pl->ob->casting_time == 0) && (pl->ob->start_holding == 1))
            pl->ob->start_holding = 0;
        }

      do_some_living (pl->ob);
    }
}

static void
process_players2 ()
{
  /* Then check if any players should use weapon-speed instead of speed */
  for (player *pl = first_player; pl; pl = pl->next)
    {
      /* The code that did weapon_sp handling here was out of place -
       * this isn't called until after the player has finished there
       * actions, and is thus out of place.  All we do here is bounds
       * checking.
       */
      if (pl->has_hit)
        {
          if (pl->ob->speed_left > pl->weapon_sp)
            pl->ob->speed_left = pl->weapon_sp;

          /* This needs to be here - if the player is running, we need to
           * clear this each tick, but new commands are not being received
           * so execute_newserver_command() is never called
           */
          pl->has_hit = 0;
        }
      else if (pl->ob->speed_left > pl->ob->speed)
        pl->ob->speed_left = pl->ob->speed;
    }
}

void
process_events ()
{
  object *op;

  static object *marker;

  if (!marker)
    marker = object::create ();

  process_players1 ();

  marker->active_next = active_objects;

  if (marker->active_next)
    marker->active_next->active_prev = marker;

  marker->active_prev = NULL;
  active_objects = marker;

  while (marker->active_next)
    {
      op = marker->active_next;

      /* Move marker forward - swap op and marker */
      op->active_prev = marker->active_prev;

      if (op->active_prev)
        op->active_prev->active_next = op;
      else
        active_objects = op;

      marker->active_next = op->active_next;

      if (marker->active_next)
        marker->active_next->active_prev = marker;

      marker->active_prev = op;
      op->active_next = marker;

      /* Now process op */
      if (QUERY_FLAG (op, FLAG_FREED))
        {
          LOG (llevError, "BUG: process_events(): Free object on list\n");
          op->speed = 0;
          update_ob_speed (op);
          continue;
        }

      /* I've seen occasional crashes due to this - the object is removed,
       * and thus the map it points to (last map it was on) may be bogus
       * The real bug is to try to find out the cause of this - someone
       * is probably calling remove_ob without either an insert_ob or
       * free_object afterwards, leaving an object dangling.  But I'd
       * rather log this and continue on instead of crashing.
       * Don't remove players - when a player quits, the object is in
       * sort of a limbo, of removed, but something we want to keep
       * around.
       */
      if (QUERY_FLAG (op, FLAG_REMOVED) && op->type != PLAYER && op->map && op->map->in_memory != MAP_IN_MEMORY)
        {
          LOG (llevError, "BUG: process_events(): Removed object on list\n");
          char *dump = dump_object (op);
          LOG (llevError, dump);
          free (dump);
          op->destroy ();
          continue;
        }

      if (!op->speed)
        {
          LOG (llevError, "BUG: process_events(): Object %s has no speed, "
                          "but is on active list\n", &op->arch->name);
          update_ob_speed (op);
          continue;
        }

      if (op->map == NULL && op->env == NULL && op->name && op->type != MAP)
        {
          LOG (llevError, "BUG: process_events(): Object without map or "
                          "inventory is on active list: %s (%d)\n", &op->name, op->count);
          op->speed = 0;
          update_ob_speed (op);
          continue;
        }

      /* Animate the object. Bug or feature that anim_speed
       * is based on ticks, and not the creatures speed?
       */
      if (op->anim_speed && op->last_anim >= op->anim_speed)
        {
          if ((op->type == PLAYER))
            animate_object (op, op->facing);
          else
            animate_object (op, op->direction);

          op->last_anim = 1;
        }
      else
        op->last_anim++;

      if (op->speed_left > 0)
        {
#if 0
          /* I've seen occasional crashes in move_symptom() with it
           * crashing because op is removed - add some debugging to
           * track if it is removed at this point.
           * This unfortunately is a bit too verbose it seems - not sure
           * why - I think what happens is a map is freed or something and
           * some objects get 'lost' - removed never to be reclaimed.
           * removed objects generally shouldn't exist.
           */
          if (QUERY_FLAG (op, FLAG_REMOVED))
            {
              LOG (llevDebug, "process_events: calling process_object with removed object %s\n", op->name ? op->name : "null");
            }
#endif
          --op->speed_left;
          process_object (op);

          if (op->destroyed ())
            continue;
        }

      if (settings.casting_time == TRUE && op->casting_time > 0)
        op->casting_time--;

      if (op->speed_left <= 0)
        op->speed_left += FABS (op->speed);
    }

  /* Remove marker object from active list */
  if (marker->active_prev != NULL)
    marker->active_prev->active_next = NULL;
  else
    active_objects = NULL;

  process_players2 ();
}

void
clean_tmp_files (void)
{
  maptile *m, *next;

  LOG (llevInfo, "Cleaning up...\n");

  /* We save the maps - it may not be intuitive why, but if there are unique
   * items, we need to save the map so they get saved off.  Perhaps we should
   * just make a special function that only saves the unique items.
   */
  for (m = first_map; m; m = next)
    {
      next = m->next;

      if (m->in_memory == MAP_IN_MEMORY)
        {
          /* If we want to reuse the temp maps, swap it out (note that will also
           * update the log file.
           */

          swap_map (m);
        }
    }

  write_todclock ();            /* lets just write the clock here */
}

/* clean up everything before exiting */
void
cleanup (bool make_core)
{
  LOG (llevDebug, "Cleanup called.\n");

  if (init_done)
    {
      for (player *pl = first_player; pl != NULL; pl = pl->next)
        save_player (pl->ob, 0);

      for (player *pl = first_player; pl != NULL; pl = pl->next)
        if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
          leave_map (pl->ob);

      clean_tmp_files ();
      write_book_archive ();

      INVOKE_GLOBAL (CLEANUP);
    }

  if (make_core)
    abort ();
  else
    _exit (0);
}

void
leave (player *pl, int draw_exit)
{
  if (pl)
    {
      /* We do this so that the socket handling routine can do the final
       * cleanup.  We also leave that loop to actually handle the freeing
       * of the data.
       */
      if (pl->ns)
        pl->ns->destroy ();

      if (pl->ob->type != DEAD_OBJECT)
        {
          /* If a hidden dm dropped connection do not create
           * inconsistencies by showing that they have left the game 
           */
          if (!(QUERY_FLAG (pl->ob, FLAG_WIZ) && pl->ob->contr->hidden)
              && draw_exit && (pl->ns->state != ST_GET_NAME && pl->ns->state != ST_GET_PASSWORD && pl->ns->state != ST_CONFIRM_PASSWORD))
            {
              if (pl->ob->map)
                {
                  INVOKE_PLAYER (LOGOUT, pl);
                  LOG (llevInfo, "LOGOUT: Player named %s from ip %s\n", &pl->ob->name, pl->ns->host);
                }

              char buf[MAX_BUF];

              sprintf (buf, "%s left the game.", &pl->ob->name);
              new_draw_info (NDI_UNIQUE | NDI_ALL | NDI_DK_ORANGE, 5, NULL, buf);
            }

          if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
            leave_map (pl->ob);

          pl->ob->type = DEAD_OBJECT;   /* To avoid problems with inventory window */
        }
    }
}

int
forbid_play (void)
{
#if !defined(_IBMR2) && !defined(___IBMR2) && defined(PERM_FILE)
  char buf[MAX_BUF], day[MAX_BUF];
  FILE *fp;
  time_t clock;
  struct tm *tm;
  int i, start, stop, forbit = 0, comp;

  clock = time (NULL);
  tm = (struct tm *) localtime (&clock);

  sprintf (buf, "%s/%s", settings.confdir, PERM_FILE);
  if ((fp = open_and_uncompress (buf, 0, &comp)) == NULL)
    return 0;

  while (fgets (buf, MAX_BUF, fp))
    {
      if (buf[0] == '#')
        continue;
      if (!strncmp (buf, "msg", 3))
        {
          if (forbit)
            while (fgets (buf, MAX_BUF, fp))    /* print message */
              fputs (buf, logfile);
          break;

        }
      else if (sscanf (buf, "%s %d%*c%d\n", day, &start, &stop) != 3)
        {
          LOG (llevDebug, "Warning: Incomplete line in permission file ignored.\n");
          continue;
        }

      for (i = 0; i < 7; i++)
        {
          if (!strncmp (buf, days[i], 3) && (tm->tm_wday == i) && (tm->tm_hour >= start) && (tm->tm_hour < stop))
            forbit = 1;
        }
    }

  close_and_delete (fp, comp);

  return forbit;
#else
  return 0;
#endif
}

/*
 *  do_specials() is a collection of functions to call from time to time.
 * Modified 2000-1-14 MSW to use the global pticks count to determine how
 * often to do things.  This will allow us to spred them out more often.
 * I use prime numbers for the factor count - in that way, it is less likely
 * these actions will fall on the same tick (compared to say using 500/2500/15000
 * which would mean on that 15,000 tick count a whole bunch of stuff gets
 * done).  Of course, there can still be times where multiple specials are
 * done on the same tick, but that will happen very infrequently
 *
 * I also think this code makes it easier to see how often we really are
 * doing the various things.
 */

extern unsigned long todtick;

void
do_specials (void)
{
  if (!(pticks % PTICKS_PER_CLOCK))
    tick_the_clock ();

  if (!(pticks % 7))
    shstr::gc ();

  if (!(pticks % 79))
    flush_old_maps ();          /* Clears the tmp-files of maps which have reset */

  if (!(pticks % 2503))
    fix_weight ();              /* Hack to fix weightproblems caused by bugs */

  if (!(pticks % 5003))
    write_book_archive ();

  if (!(pticks % 5009))
    clean_friendly_list ();

  if (!(pticks % 5011))
    obsolete_parties ();

  if (!(pticks % 12503))
    fix_luck ();
}

void
server_tick ()
{
  nroferrors = 0;

  // first do the user visible stuff
  doeric_server ();
  INVOKE_GLOBAL (CLOCK);
  process_events ();           /* "do" something with objects with speed */
  flush_sockets ();

  // then do some bookkeeping, should not really be here
  check_active_maps ();         /* Removes unused maps after a certain timeout */
  do_specials ();               /* Routines called from time to time. */
  object::free_mortals ();

  ++pticks;
}

int
main (int argc, char **argv)
{
  settings.argc = argc;
  settings.argv = argv;

  init (argc, argv);

  initPlugins ();

  for (;;)
    cfperl_main ();

  // unreached
  emergency_save (0);
  cleanup ();

  return 0;
}
Revision:	1.52
Committed:	Thu Dec 21 23:37:06 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.51:	+5 -5 lines
Log Message:	- made state a per-client variable (that does not magically make state a per-client thing!) - rename player->socket to player->ns. its not a good name for "client", but it is an historical artifact, and better than "socket".