server/server/apply.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2001 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 to <crossfire@schmorp.de>
*/

#include <global.h>
#include <living.h>
#include <spells.h>
#include <skills.h>
#include <tod.h>

#ifndef __CEXTRACT__
# include <sproto.h>
#endif

/* Want this regardless of rplay. */
#include <sounds.h>

/* need math lib for double-precision and pow() in dragon_eat_flesh() */
#include <math.h>

/**
 * Check if op should abort moving victim because of it's race or slaying.
 * Returns 1 if it should abort, returns 0 if it should continue.
 */
int
should_director_abort (object *op, object *victim)
{
  int arch_flag, name_flag, race_flag;

  /* Get flags to determine what of arch, name, and race should be checked.
   * This is stored in subtype, and is a bitmask, the LSB is the arch flag,
   * the next is the name flag, and the last is the race flag. Also note,
   * if subtype is set to zero, that also goes to defaults of all affecting
   * it. Examples:
   * subtype 1: only arch
   * subtype 3: arch or name
   * subtype 5: arch or race
   * subtype 7: all three
   */
  if (op->subtype)
    {
      arch_flag = (op->subtype & 1);
      name_flag = (op->subtype & 2);
      race_flag = (op->subtype & 4);
    }
  else
    {
      arch_flag = 1;
      name_flag = 1;
      race_flag = 1;
    }
  /* If the director has race set, only affect objects with a arch, 
   * name or race that matches.
   */
  if ((op->race) &&
      ((!(victim->arch && arch_flag && victim->arch->name) || strcmp (op->race, victim->arch->name))) &&
      ((!(victim->name && name_flag) || strcmp (op->race, victim->name))) &&
      ((!(victim->race && race_flag) || strcmp (op->race, victim->race))))
    {
      return 1;
    }
  /* If the director has slaying set, only affect objects where none
   * of arch, name, or race match.
   */
  if ((op->slaying) && (((victim->arch && arch_flag && victim->arch->name && !strcmp (op->slaying, victim->arch->name))) ||
                        ((victim->name && name_flag && !strcmp (op->slaying, victim->name))) ||
                        ((victim->race && race_flag && !strcmp (op->slaying, victim->race)))))
    {
      return 1;
    }
  return 0;
}

/**
 * This handles a player dropping money on an altar to identify stuff.
 * It'll identify marked item, if none all items up to dropped money.
 * Return value: 1 if money was destroyed, 0 if not.
 */
static int
apply_id_altar (object *money, object *altar, object *pl)
{
  object *id, *marked;
  int success = 0;

  if (pl == NULL || pl->type != PLAYER)
    return 0;

  /* Check for MONEY type is a special hack - it prevents 'nothing needs
   * identifying' from being printed out more than it needs to be.
   */
  if (!check_altar_sacrifice (altar, money) || money->type != MONEY)
    return 0;

  marked = find_marked_object (pl);
  /* if the player has a marked item, identify that if it needs to be
   * identified.  IF it doesn't, then go through the player inventory.
   */
  if (marked && !QUERY_FLAG (marked, FLAG_IDENTIFIED) && need_identify (marked))
    {
      if (operate_altar (altar, &money))
        {
          identify (marked);
          new_draw_info_format (NDI_UNIQUE, 0, pl, "You have %s.", long_desc (marked, pl));
          if (marked->msg)
            {
              new_draw_info (NDI_UNIQUE, 0, pl, "The item has a story:");
              new_draw_info (NDI_UNIQUE, 0, pl, marked->msg);
            }
          return money == NULL;
        }
    }

  for (id = pl->inv; id; id = id->below)
    {
      if (!QUERY_FLAG (id, FLAG_IDENTIFIED) && !id->invisible && need_identify (id))
        {
          if (operate_altar (altar, &money))
            {
              identify (id);
              new_draw_info_format (NDI_UNIQUE, 0, pl, "You have %s.", long_desc (id, pl));
              if (id->msg)
                {
                  new_draw_info (NDI_UNIQUE, 0, pl, "The item has a story:");
                  new_draw_info (NDI_UNIQUE, 0, pl, id->msg);
                }
              success = 1;
              /* If no more money, might as well quit now */
              if (money == NULL || !check_altar_sacrifice (altar, money))
                break;
            }
          else
            {
              LOG (llevError, "check_id_altar:  Couldn't do sacrifice when we should have been able to\n");
              break;
            }
        }
    }
  if (!success)
    new_draw_info (NDI_UNIQUE, 0, pl, "You have nothing that needs identifying");
  return money == NULL;
}

/**
 * This checks whether the object has a "on_use_yield" field, and if so generated and drops
 * matching item.
 **/
static void
handle_apply_yield (object *tmp)
{
  const char *yield;

  yield = get_ob_key_value (tmp, "on_use_yield");
  if (yield != NULL)
    {
      object *drop = get_archetype (yield);

      if (tmp->env)
        {
          drop = insert_ob_in_ob (drop, tmp->env);
          if (tmp->env->type == PLAYER)
            esrv_send_item (tmp->env, drop);
        }
      else
        {
          drop->x = tmp->x;
          drop->y = tmp->y;
          insert_ob_in_map (drop, tmp->map, tmp, INS_BELOW_ORIGINATOR);
        }
    }
}

/**
 * Handles applying a potion.
 */
int
apply_potion (object *op, object *tmp)
{
  int got_one = 0, i;
  object *force = 0, *floor = 0;

  floor = get_map_ob (op->map, op->x, op->y);

  if (get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_SAFE)
    {
      if (op->type == PLAYER)
        new_draw_info (NDI_UNIQUE, 0, op, "Gods prevent you from using this here, it's sacred ground!");
      CLEAR_FLAG (tmp, FLAG_APPLIED);
      return 0;
    }

  if (op->type == PLAYER)
    {
      if (!QUERY_FLAG (tmp, FLAG_IDENTIFIED))
        identify (tmp);
    }

  handle_apply_yield (tmp);

  /* Potion of restoration - only for players */
  if (op->type == PLAYER && (tmp->attacktype & AT_DEPLETE))
    {
      object *depl;
      archetype *at;

      if (QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))
        {
          drain_stat (op);
          fix_player (op);
          decrease_ob (tmp);
          return 1;
        }
      if ((at = archetype::find (ARCH_DEPLETION)) == NULL)
        {
          LOG (llevError, "Could not find archetype depletion\n");
          return 0;
        }
      depl = present_arch_in_ob (at, op);
      if (depl != NULL)
        {
          for (i = 0; i < NUM_STATS; i++)
            if (get_attr_value (&depl->stats, i))
              {
                new_draw_info (NDI_UNIQUE, 0, op, restore_msg[i]);
              }
          remove_ob (depl);
          free_object (depl);
          fix_player (op);
        }
      else
        new_draw_info (NDI_UNIQUE, 0, op, "You potion had no effect.");

      decrease_ob (tmp);
      return 1;
    }

  /* improvement potion - only for players */
  if (op->type == PLAYER && tmp->attacktype & AT_GODPOWER)
    {

      for (i = 1; i < MIN (11, op->level); i++)
        {
          if (QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))
            {
              if (op->contr->levhp[i] != 1)
                {
                  op->contr->levhp[i] = 1;
                  break;
                }
              if (op->contr->levsp[i] != 1)
                {
                  op->contr->levsp[i] = 1;
                  break;
                }
              if (op->contr->levgrace[i] != 1)
                {
                  op->contr->levgrace[i] = 1;
                  break;
                }
            }
          else
            {
              if (op->contr->levhp[i] < 9)
                {
                  op->contr->levhp[i] = 9;
                  break;
                }
              if (op->contr->levsp[i] < 6)
                {
                  op->contr->levsp[i] = 6;
                  break;
                }
              if (op->contr->levgrace[i] < 3)
                {
                  op->contr->levgrace[i] = 3;
                  break;
                }
            }
        }
      /* Just makes checking easier */
      if (i < MIN (11, op->level))
        got_one = 1;
      if (!QUERY_FLAG (tmp, FLAG_CURSED) && !QUERY_FLAG (tmp, FLAG_DAMNED))
        {
          if (got_one)
            {
              fix_player (op);
              new_draw_info (NDI_UNIQUE, 0, op, "The Gods smile upon you and remake you");
              new_draw_info (NDI_UNIQUE, 0, op, "a little more in their image.");
              new_draw_info (NDI_UNIQUE, 0, op, "You feel a little more perfect.");
            }
          else
            new_draw_info (NDI_UNIQUE, 0, op, "The potion had no effect - you are already perfect");
        }
      else
        {                       /* cursed potion */
          if (got_one)
            {
              fix_player (op);
              new_draw_info (NDI_UNIQUE, 0, op, "The Gods are angry and punish you.");
            }
          else
            new_draw_info (NDI_UNIQUE, 0, op, "You are fortunate that you are so pathetic.");
        }
      decrease_ob (tmp);
      return 1;
    }


  /* A potion that casts a spell.  Healing, restore spellpoint (power potion)
   * and heroism all fit into this category.  Given the spell object code,
   * there is no limit to the number of spells that potions can be cast,
   * but direction is problematic to try and imbue fireball potions for example.
   */
  if (tmp->inv)
    {
      if (QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))
        {
          object *fball;

          new_draw_info (NDI_UNIQUE, 0, op, "Yech!  Your lungs are on fire!");
          /* Explodes a fireball centered at player */
          fball = get_archetype (EXPLODING_FIREBALL);
          fball->dam_modifier = random_roll (1, op->level, op, PREFER_LOW) / 5 + 1;
          fball->stats.maxhp = random_roll (1, op->level, op, PREFER_LOW) / 10 + 2;
          fball->x = op->x;
          fball->y = op->y;
          insert_ob_in_map (fball, op->map, NULL, 0);
        }
      else
        cast_spell (op, tmp, op->facing, tmp->inv, NULL);

      decrease_ob (tmp);
      /* if youre dead, no point in doing this... */
      if (!QUERY_FLAG (op, FLAG_REMOVED))
        fix_player (op);
      return 1;
    }

  /* Deal with protection potions */
  force = NULL;
  for (i = 0; i < NROFATTACKS; i++)
    {
      if (tmp->resist[i])
        {
          if (!force)
            force = get_archetype (FORCE_NAME);
          memcpy (force->resist, tmp->resist, sizeof (tmp->resist));
          force->type = POTION_EFFECT;
          break;                /* Only need to find one protection since we copy entire batch */
        }
    }
  /* This is a protection potion */
  if (force)
    {
      /* cursed items last longer */
      if (QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))
        {
          force->stats.food *= 10;
          for (i = 0; i < NROFATTACKS; i++)
            if (force->resist[i] > 0)
              force->resist[i] = -force->resist[i];     /* prot => vuln */
        }
      force->speed_left = -1;
      force = insert_ob_in_ob (force, op);
      CLEAR_FLAG (tmp, FLAG_APPLIED);
      SET_FLAG (force, FLAG_APPLIED);
      change_abil (op, force);
      decrease_ob (tmp);
      return 1;
    }

  /* Only thing left are the stat potions */
  if (op->type == PLAYER)
    {                           /* only for players */
      if ((QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED)) && tmp->value != 0)
        CLEAR_FLAG (tmp, FLAG_APPLIED);
      else
        SET_FLAG (tmp, FLAG_APPLIED);
      if (!change_abil (op, tmp))
        new_draw_info (NDI_UNIQUE, 0, op, "Nothing happened.");
    }

  /* CLEAR_FLAG is so that if the character has other potions
   * that were grouped with the one consumed, his
   * stat will not be raised by them.  fix_player just clears
   * up all the stats.
   */
  CLEAR_FLAG (tmp, FLAG_APPLIED);
  fix_player (op);
  decrease_ob (tmp);
  return 1;
}

/****************************************************************************
 * Weapon improvement code follows
 ****************************************************************************/

/**
 * This returns the sum of nrof of item (arch name).
 */
static int
check_item (object *op, const char *item)
{
  int count = 0;


  if (item == NULL)
    return 0;
  op = op->below;
  while (op != NULL)
    {
      if (strcmp (op->arch->name, item) == 0)
        {
          if (!QUERY_FLAG (op, FLAG_CURSED) && !QUERY_FLAG (op, FLAG_DAMNED)
              /* Loophole bug? -FD- */  && !QUERY_FLAG (op, FLAG_UNPAID))
            {
              if (op->nrof == 0)        /* this is necessary for artifact sacrifices --FD-- */
                count++;
              else
                count += op->nrof;
            }
        }
      op = op->below;
    }
  return count;
}

/**
 * This removes 'nrof' of what item->slaying says to remove.
 * op is typically the player, which is only
 * really used to determine what space to look at.
 * Modified to only eat 'nrof' of objects.
 */
static void
eat_item (object *op, const char *item, uint32 nrof)
{
  object *prev;

  prev = op;
  op = op->below;

  while (op != NULL)
    {
      if (strcmp (op->arch->name, item) == 0)
        {
          if (op->nrof >= nrof)
            {
              decrease_ob_nr (op, nrof);
              return;
            }
          else
            {
              decrease_ob_nr (op, op->nrof);
              nrof -= op->nrof;
            }
          op = prev;
        }
      prev = op;
      op = op->below;
    }
}

/**
 * This checks to see of the player (who) is sufficient level to use a weapon
 * with improvs improvements (typically last_eat).  We take an int here
 * instead of the object so that the improvement code can pass along the
 * increased value to see if the object is usuable.
 * we return 1 (true) if the player can use the weapon.
 */
static int
check_weapon_power (const object *who, int improvs)
{

/* Old code is below (commented out).  Basically, since weapons are the only
 * object players really have any control to improve, it's a bit harsh to
 * require high level in some combat skill, so we just use overall level.
 */
#if 1
  if (((who->level / 5) + 5) >= improvs)
    return 1;
  else
    return 0;

#else
  int level = 0;

  /* The skill system hands out wc and dam bonuses to fighters
   * more generously than the old system (see fix_player). Thus
   * we need to curtail the power of player enchanted weapons. 
   * I changed this to 1 improvement per "fighter" level/5 -b.t. 
   * Note:  Nothing should break by allowing this ratio to be different or
   * using normal level - it is just a matter of play balance.
   */
  if (who->type == PLAYER)
    {
      object *wc_obj = NULL;

      for (wc_obj = who->inv; wc_obj; wc_obj = wc_obj->below)
        if (wc_obj->type == SKILL && IS_COMBAT_SKILL (wc_obj->subtype) && wc_obj->level > level)
          level = wc_obj->level;

      if (!level)
        {
          LOG (llevError, "Error: Player: %s lacks wc experience object\n", who->name);
          level = who->level;
        }
    }
  else
    level = who->level;

  return (improvs <= ((level / 5) + 5));
#endif
}

/**
 * Returns how many items of type improver->slaying there are under op.
 * Will display a message if none found, and 1 if improver->slaying is NULL.
 */
static int
check_sacrifice (object *op, const object *improver)
{
  int count = 0;

  if (improver->slaying != NULL)
    {
      count = check_item (op, improver->slaying);
      if (count < 1)
        {
          char buf[200];

          sprintf (buf, "The gods want more %ss", &improver->slaying);
          new_draw_info (NDI_UNIQUE, 0, op, buf);
          return 0;
        }
    }
  else
    count = 1;

  return count;
}

/**
 * Actually improves the weapon, and tells user.
 */
int
improve_weapon_stat (object *op, object *improver, object *weapon, signed char *stat, int sacrifice_count, const char *statname)
{

  new_draw_info (NDI_UNIQUE, 0, op, "Your sacrifice was accepted.");
  *stat += sacrifice_count;
  weapon->last_eat++;
  new_draw_info_format (NDI_UNIQUE, 0, op, "Weapon's bonus to %s improved by %d", statname, sacrifice_count);
  decrease_ob (improver);

  /* So it updates the players stats and the window */
  fix_player (op);
  return 1;
}

/* Types of improvements, hidden in the sp field. */
#define IMPROVE_PREPARE 1
#define IMPROVE_DAMAGE 2
#define IMPROVE_WEIGHT 3
#define IMPROVE_ENCHANT 4
#define IMPROVE_STR 5
#define IMPROVE_DEX 6
#define IMPROVE_CON 7
#define IMPROVE_WIS 8
#define IMPROVE_CHA 9
#define IMPROVE_INT 10
#define IMPROVE_POW 11


/**
 * This does the prepare weapon scroll.
 * Checks for sacrifice, and so on.
 */

int
prepare_weapon (object *op, object *improver, object *weapon)
{
  int sacrifice_count, i;
  char buf[MAX_BUF];

  if (weapon->level != 0)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Weapon already prepared.");
      return 0;
    }
  for (i = 0; i < NROFATTACKS; i++)
    if (weapon->resist[i])
      break;

  /* If we break out, i will be less than nrofattacks, preventing
   * improvement of items that already have protections.
   */
  if (i < NROFATTACKS || weapon->stats.hp ||    /* regeneration */
      (weapon->stats.sp && weapon->type == WEAPON) ||   /* sp regeneration */
      weapon->stats.exp ||      /* speed */
      weapon->stats.ac)         /* AC - only taifu's I think */
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Cannot prepare magic weapons.");
      return 0;
    }
  sacrifice_count = check_sacrifice (op, improver);
  if (sacrifice_count <= 0)
    return 0;
  weapon->level = isqrt (sacrifice_count);
  new_draw_info (NDI_UNIQUE, 0, op, "Your sacrifice was accepted.");
  eat_item (op, improver->slaying, sacrifice_count);

  new_draw_info_format (NDI_UNIQUE, 0, op, "Your *%s may be improved %d times.", &weapon->name, weapon->level);

  sprintf (buf, "%s's %s", &op->name, &weapon->name);
  weapon->name = weapon->name_pl = buf;
  weapon->nrof = 0;             /*  prevents preparing n weapons in the same
                                   slot at once! */
  decrease_ob (improver);
  weapon->last_eat = 0;
  return 1;
}


/**
 * Does the dirty job for 'improve weapon' scroll, prepare or add something.
 * This is the new improve weapon code.
 * Returns 0 if it was not able to work for some reason.
 *
 * Checks if weapon was prepared, if enough potions on the floor, ...
 *
 * We are hiding extra information about the weapon in the level and
 * last_eat numbers for an object.  Hopefully this won't break anything ?? 
 * level == max improve last_eat == current improve
 */
int
improve_weapon (object *op, object *improver, object *weapon)
{
  int sacrifice_count, sacrifice_needed = 0;

  if (improver->stats.sp == IMPROVE_PREPARE)
    {
      return prepare_weapon (op, improver, weapon);
    }
  if (weapon->level == 0)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "This weapon has not been prepared.");
      return 0;
    }
  if (weapon->level == weapon->last_eat && weapon->item_power >= 100)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "This weapon cannot be improved any more.");
      return 0;
    }
  if (QUERY_FLAG (weapon, FLAG_APPLIED) && !check_weapon_power (op, weapon->last_eat + 1))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Improving the weapon will make it too");
      new_draw_info (NDI_UNIQUE, 0, op, "powerful for you to use.  Unready it if you");
      new_draw_info (NDI_UNIQUE, 0, op, "really want to improve it.");
      return 0;
    }
  /* This just increases damage by 5 points, no matter what.  No sacrifice
   * is needed.  Since stats.dam is now a 16 bit value and not 8 bit,
   * don't put any maximum value on damage - the limit is how much the
   * weapon  can be improved.
   */
  if (improver->stats.sp == IMPROVE_DAMAGE)
    {
      weapon->stats.dam += 5;
      weapon->weight += 5000;   /* 5 KG's */
      new_draw_info_format (NDI_UNIQUE, 0, op, "Damage has been increased by 5 to %d", weapon->stats.dam);
      weapon->last_eat++;

      weapon->item_power++;
      decrease_ob (improver);
      return 1;
    }
  if (improver->stats.sp == IMPROVE_WEIGHT)
    {
      /* Reduce weight by 20% */
      weapon->weight = (weapon->weight * 8) / 10;
      if (weapon->weight < 1)
        weapon->weight = 1;
      new_draw_info_format (NDI_UNIQUE, 0, op, "Weapon weight reduced to %6.1f kg", (float) weapon->weight / 1000.0);
      weapon->last_eat++;
      weapon->item_power++;
      decrease_ob (improver);
      return 1;
    }
  if (improver->stats.sp == IMPROVE_ENCHANT)
    {
      weapon->magic++;
      weapon->last_eat++;
      new_draw_info_format (NDI_UNIQUE, 0, op, "Weapon magic increased to %d", weapon->magic);
      decrease_ob (improver);
      weapon->item_power++;
      return 1;
    }

  sacrifice_needed = weapon->stats.Str + weapon->stats.Int + weapon->stats.Dex +
    weapon->stats.Pow + weapon->stats.Con + weapon->stats.Cha + weapon->stats.Wis;

  if (sacrifice_needed < 1)
    sacrifice_needed = 1;
  sacrifice_needed *= 2;

  sacrifice_count = check_sacrifice (op, improver);
  if (sacrifice_count < sacrifice_needed)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "You need at least %d %s", sacrifice_needed, &improver->slaying);
      return 0;
    }
  eat_item (op, improver->slaying, sacrifice_needed);
  weapon->item_power++;

  switch (improver->stats.sp)
    {
      case IMPROVE_STR:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Str), 1, "strength");
      case IMPROVE_DEX:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Dex), 1, "dexterity");
      case IMPROVE_CON:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Con), 1, "constitution");
      case IMPROVE_WIS:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Wis), 1, "wisdom");
      case IMPROVE_CHA:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Cha), 1, "charisma");
      case IMPROVE_INT:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Int), 1, "intelligence");
      case IMPROVE_POW:
        return improve_weapon_stat (op, improver, weapon, (signed char *) &(weapon->stats.Pow), 1, "power");
      default:
        new_draw_info (NDI_UNIQUE, 0, op, "Unknown improvement type.");
    }
  LOG (llevError, "improve_weapon: Got to end of function\n");
  return 0;
}

/**
 * Handles the applying of improve/prepare/enchant weapon scroll.
 * Checks a few things (not on a non-magic square, marked weapon, ...),
 * then calls improve_weapon to do the dirty work.
 */
int
check_improve_weapon (object *op, object *tmp)
{
  object *otmp;

  if (op->type != PLAYER)
    return 0;
  if (!QUERY_FLAG (op, FLAG_WIZCAST) && (get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_NO_MAGIC))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Something blocks the magic of the scroll.");
      return 0;
    }
  otmp = find_marked_object (op);
  if (!otmp)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You need to mark a weapon object.");
      return 0;
    }
  if (otmp->type != WEAPON && otmp->type != BOW)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Marked item is not a weapon or bow");
      return 0;
    }
  new_draw_info (NDI_UNIQUE, 0, op, "Applied weapon builder.");
  improve_weapon (op, tmp, otmp);
  esrv_send_item (op, otmp);
  return 1;
}

/**
 * This code deals with the armour improvment scrolls.
 * Change limits on improvement - let players go up to
 * +5 no matter what level, but they are limited by item
 * power.
 * Try to use same improvement code as in the common/treasure.c
 * file, so that if you make a +2 full helm, it will be just
 * the same as one you find in a shop.
 *
 * deprecated comment:
 * this code is by b.t. (thomas@nomad.astro.psu.edu) -
 * only 'enchantment' of armour is possible - improving
 * the stats of a player w/ armour as well as a weapon
 * will probably horribly unbalance the game. Magic enchanting
 * depends on the level of the character - ie the plus
 * value (magic) of the armour can never be increased beyond
 * the level of the character / 10 -- rounding upish, nor may
 * the armour value of the piece of equipment exceed either 
 * the users level or 90)
 * Modified by MSW for partial resistance.  Only support
 * changing of physical area right now.
 */
int
improve_armour (object *op, object *improver, object *armour)
{
  object *tmp;

  if (armour->magic >= settings.armor_max_enchant)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "This armour can not be enchanted any further.");
      return 0;
    }
  /* Dealing with random artifact armor is a lot trickier (in terms of value, weight,
   * etc), so take the easy way out and don't worry about it.
   * Note - maybe add scrolls which make the random artifact versions (eg, armour
   * of gnarg and what not?)
   */
  if (armour->title)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "This armour will not accept further enchantment.");
      return 0;
    }

  /* Split objects if needed.  Can't insert tmp until the
   * end of this function - otherwise it will just re-merge.
   */
  if (armour->nrof > 1)
    tmp = get_split_ob (armour, armour->nrof - 1);
  else
    tmp = NULL;

  armour->magic++;

  if (!settings.armor_speed_linear)
    {
      int base = 100;
      int pow = 0;

      while (pow < armour->magic)
        {
          base = base - (base * settings.armor_speed_improvement) / 100;
          pow++;
        }

      ARMOUR_SPEED (armour) = (ARMOUR_SPEED (&armour->arch->clone) * base) / 100;
    }
  else
    ARMOUR_SPEED (armour) = (ARMOUR_SPEED (&armour->arch->clone) * (100 + armour->magic * settings.armor_speed_improvement)) / 100;

  if (!settings.armor_weight_linear)
    {
      int base = 100;
      int pow = 0;

      while (pow < armour->magic)
        {
          base = base - (base * settings.armor_weight_reduction) / 100;
          pow++;
        }

      armour->weight = (armour->arch->clone.weight * base) / 100;
    }
  else
    armour->weight = (armour->arch->clone.weight * (100 - armour->magic * settings.armor_weight_reduction)) / 100;

  if (armour->weight <= 0)
    {
      LOG (llevInfo, "Warning: enchanted armours can have negative weight\n.");
      armour->weight = 1;
    }

  armour->item_power = get_power_from_ench (armour->arch->clone.item_power + armour->magic);

  if (op->type == PLAYER)
    {
      esrv_send_item (op, armour);
      if (QUERY_FLAG (armour, FLAG_APPLIED))
        fix_player (op);
    }
  decrease_ob (improver);
  if (tmp)
    {
      insert_ob_in_ob (tmp, op);
      esrv_send_item (op, tmp);
    }
  return 1;
}


/*
 * convert_item() returns 1 if anything was converted, 0 if the item was not
 * what the converter wants, -1 if the converter is broken.
 */
#define CONV_FROM(xyz)  xyz->slaying
#define CONV_TO(xyz)    xyz->other_arch
#define CONV_NR(xyz)    xyz->stats.sp
#define CONV_NEED(xyz)  xyz->stats.food

/* Takes one items and makes another.
 * converter is the object that is doing the conversion.
 * item is the object that triggered the converter - if it is not
 * what the converter wants, this will not do anything.
 */
int
convert_item (object *item, object *converter)
{
  int nr = 0;
  uint32 price_in;

  /* We make some assumptions - we assume if it takes money as it type,
   * it wants some amount.  We don't make change (ie, if something costs
   * 3 gp and player drops a platinum, tough luck)
   */
  if (!strcmp (CONV_FROM (converter), "money"))
    {
      int cost;

      if (item->type != MONEY)
        return 0;

      nr = (item->nrof * item->value) / CONV_NEED (converter);
      if (!nr)
        return 0;
      cost = nr * CONV_NEED (converter) / item->value;
      /* take into account rounding errors */
      if (nr * CONV_NEED (converter) % item->value)
        cost++;
      decrease_ob_nr (item, cost);

      price_in = cost * item->value;
    }
  else
    {
      if (item->type == PLAYER || CONV_FROM (converter) != item->arch->name ||
          (CONV_NEED (converter) && CONV_NEED (converter) > (uint16) item->nrof))
        return 0;

      if (CONV_NEED (converter))
        {
          nr = item->nrof / CONV_NEED (converter);
          decrease_ob_nr (item, nr * CONV_NEED (converter));
          price_in = nr * CONV_NEED (converter) * item->value;
        }
      else
        {
          price_in = item->value;
          remove_ob (item);
          free_object (item);
        }
    }

  if (converter->inv != NULL)
    {
      object *ob;
      int i;
      object *ob_to_copy;

      /* select random object from inventory to copy */
      ob_to_copy = converter->inv;
      for (ob = converter->inv->below, i = 1; ob != NULL; ob = ob->below, i++)
        {
          if (rndm (0, i) == 0)
            {
              ob_to_copy = ob;
            }
        }
      item = object_create_clone (ob_to_copy);
      CLEAR_FLAG (item, FLAG_IS_A_TEMPLATE);
      unflag_inv (item, FLAG_IS_A_TEMPLATE);
    }
  else
    {
      if (converter->other_arch == NULL)
        {
          LOG (llevError, "move_creator: Converter doesn't have other arch set: %s (%s, %d, %d)\n",
               &converter->name, converter->map->path, converter->x, converter->y);
          return -1;
        }

      item = object_create_arch (converter->other_arch);
      fix_generated_item (item, converter, 0, 0, GT_MINIMAL);
    }

  if (CONV_NR (converter))
    item->nrof = CONV_NR (converter);
  if (nr)
    item->nrof *= nr;
  if (is_in_shop (converter))
    SET_FLAG (item, FLAG_UNPAID);
  else if (price_in < item->nrof * item->value)
    {
      LOG (llevDebug, "converter output price higher than input: %s at %s (%d, %d) in value %d, out value %d for %s\n",
           &converter->name, converter->map->path, converter->x, converter->y, price_in, item->nrof * item->value, &item->name);

        /**
         * elmex: we are going to let the game continue, as the mapcreator 
         * propably had something in mind when doing this 
         */
    }
  insert_ob_in_map_at (item, converter->map, converter, 0, converter->x, converter->y);
  return 1;
}

/**
 * Handle apply on containers. 
 * By Eneq(@csd.uu.se).
 * Moved to own function and added many features [Tero.Haatanen@lut.fi]
 * added the alchemical cauldron to the code -b.t.
 */

int
apply_container (object *op, object *sack)
{
  char buf[MAX_BUF];
  object *tmp;

  if (op->type != PLAYER)
    return 0;                   /* This might change */

  if (sack == NULL || sack->type != CONTAINER)
    {
      LOG (llevError, "apply_container: %s is not container!\n", &sack->name);
      return 0;
    }
  op->contr->last_used = NULL;
  op->contr->last_used_id = 0;

  if (sack->env != op)
    {
      if (sack->other_arch == NULL || sack->env != NULL)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "You must get it first.");
          return 1;
        }
      /* It's on the ground, the problems begin */
      if (op->container != sack)
        {
          /* it's closed OR some player has opened it */
          if (QUERY_FLAG (sack, FLAG_APPLIED))
            {
              for (tmp = get_map_ob (sack->map, sack->x, sack->y); tmp && tmp->container != sack; tmp = tmp->above);
              if (tmp)
                {
                  /* some other player have opened it */
                  new_draw_info_format (NDI_UNIQUE, 0, op, "%s is already occupied.", query_name (sack));
                  return 1;
                }
            }
        }
      if (QUERY_FLAG (sack, FLAG_APPLIED))
        {
          if (op->container == NULL)
            {
              tmp = arch_to_object (sack->other_arch);
              /* not good, but insert_ob_in_ob() is too smart */
              CLEAR_FLAG (tmp, FLAG_REMOVED);
              tmp->x = tmp->y = 0;
              tmp->map = NULL;
              tmp->env = sack;
              if (sack->inv)
                sack->inv->above = tmp;
              tmp->below = sack->inv;
              tmp->above = NULL;
              sack->inv = tmp;
              sack->move_off = MOVE_ALL;        /* trying force closing it */
            }
          else
            {
              sack->move_off = 0;
              tmp = sack->inv;
              if (tmp && tmp->type == CLOSE_CON)
                {
                  remove_ob (tmp);
                  free_object (tmp);
                }
            }
        }
    }

  if (QUERY_FLAG (sack, FLAG_APPLIED))
    {
      if (op->container)
        {
          if (op->container != sack)
            {
              tmp = op->container;
              apply_container (op, tmp);
              sprintf (buf, "You close %s and open ", query_name (tmp));
              op->container = sack;
              strcat (buf, query_name (sack));
              strcat (buf, ".");
            }
          else
            {
              CLEAR_FLAG (sack, FLAG_APPLIED);
              op->container = NULL;
              sprintf (buf, "You close %s.", query_name (sack));
            }
        }
      else
        {
          CLEAR_FLAG (sack, FLAG_APPLIED);
          sprintf (buf, "You open %s.", query_name (sack));
          SET_FLAG (sack, FLAG_APPLIED);
          op->container = sack;
        }
    }
  else
    {                           /* not applied */
      if (sack->slaying)
        {                       /* it's locked */
          tmp = find_key (op, op, sack);
          if (tmp)
            {
              sprintf (buf, "You unlock %s with %s.", query_name (sack), query_name (tmp));
              SET_FLAG (sack, FLAG_APPLIED);
              if (sack->env == NULL)
                {               /* if it's on ground,open it also */
                  new_draw_info (NDI_UNIQUE, 0, op, buf);
                  apply_container (op, sack);
                  return 1;
                }
            }
          else
            {
              sprintf (buf, "You don't have the key to unlock %s.", query_name (sack));
            }
        }
      else
        {
          sprintf (buf, "You readied %s.", query_name (sack));
          SET_FLAG (sack, FLAG_APPLIED);
          if (sack->env == NULL)
            {                   /* if it's on ground,open it also */
              new_draw_info (NDI_UNIQUE, 0, op, buf);
              apply_container (op, sack);
              return 1;
            }
        }
    }
  new_draw_info (NDI_UNIQUE, 0, op, buf);
  if (op->contr)
    op->contr->socket.update_look = 1;
  return 1;
}

/**
 * Eneq(@csd.uu.se): Handle apply on containers.  This is for containers
 * the player has in their inventory, eg, sacks, luggages, etc.
 *
 * Moved to own function and added many features [Tero.Haatanen@lut.fi]
 * This version is for client/server mode.
 * op is the player, sack is the container the player is opening or closing.
 * return 1 if an object is apllied somehow or another, 0 if error/no apply
 *
 * Reminder - there are three states for any container - closed (non applied),
 * applied (not open, but objects that match get tossed into it), and open
 * (applied flag set, and op->container points to the open container)
 */

int
esrv_apply_container (object *op, object *sack)
{
  object *tmp = op->container;

  if (op->type != PLAYER)
    return 0;                   /* This might change */

  if (sack == NULL || sack->type != CONTAINER)
    {
      LOG (llevError, "esrv_apply_container: %s is not container!\n", &sack->name);
      return 0;
    }

  /* If we have a currently open container, then it needs to be closed in all cases
   * if we are opening this one up.  We then fall through if appropriate for
   * openening the new container.
   */

  if (op->container && QUERY_FLAG (sack, FLAG_APPLIED))
    {
      if (op->container->env != op)
        {                       /* if container is on the ground */
          op->container->move_off = 0;
        }

      if (INVOKE_OBJECT (CLOSE, tmp, ARG_OBJECT (op)))
        return 1;

      new_draw_info_format (NDI_UNIQUE, 0, op, "You close %s.", query_name (op->container));
      CLEAR_FLAG (op->container, FLAG_APPLIED);
      op->container = NULL;
      esrv_update_item (UPD_FLAGS, op, tmp);
      if (tmp == sack)
        return 1;
    }


  /* If the player is trying to open it (which he must be doing if we got here),
   * and it is locked, check to see if player has the equipment to open it.
   */

  if (sack->slaying)
    {                           /* it's locked */
      tmp = find_key (op, op, sack);
      if (tmp)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You unlock %s with %s.", query_name (sack), query_name (tmp));
        }
      else
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You don't have the key to unlock %s.", query_name (sack));
          return 0;
        }
    }

  /* By the time we get here, we have made sure any other container has been closed and
   * if this is a locked container, the player they key to open it.
   */

  /* There are really two cases - the sack is either on the ground, or the sack is
   * part of the players inventory.  If on the ground, we assume that the player is
   * opening it, since if it was being closed, that would have been taken care of above.
   */


  if (sack->env != op)
    {
      /* Hypothetical case - the player is trying to open a sack that belong to someone
       * else.  This normally should not happen, but a misbehaving client/player could
       * try to do it, so lets handle it gracefully.
       */
      if (sack->env)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You can't open %s", query_name (sack));
          return 0;
        }
      /* set these so when the player walks off, we can unapply the sack */
      sack->move_off = MOVE_ALL;        /* trying force closing it */

      CLEAR_FLAG (sack, FLAG_APPLIED);
      new_draw_info_format (NDI_UNIQUE, 0, op, "You open %s.", query_name (sack));
      SET_FLAG (sack, FLAG_APPLIED);
      op->container = sack;
      esrv_update_item (UPD_FLAGS, op, sack);
      esrv_send_inventory (op, sack);

    }
  else
    {                           /* sack is in players inventory */
      if (QUERY_FLAG (sack, FLAG_APPLIED))
        {                       /* readied sack becoming open */
          CLEAR_FLAG (sack, FLAG_APPLIED);
          new_draw_info_format (NDI_UNIQUE, 0, op, "You open %s.", query_name (sack));
          SET_FLAG (sack, FLAG_APPLIED);
          op->container = sack;
          esrv_update_item (UPD_FLAGS, op, sack);
          esrv_send_inventory (op, sack);
        }
      else
        {
          CLEAR_FLAG (sack, FLAG_APPLIED);
          new_draw_info_format (NDI_UNIQUE, 0, op, "You readied %s.", query_name (sack));
          SET_FLAG (sack, FLAG_APPLIED);
          esrv_update_item (UPD_FLAGS, op, sack);
        }
    }
  return 1;
}


/**
 * Handles dropping things on altar.
 * Returns true if sacrifice was accepted.
 */
static int
apply_altar (object *altar, object *sacrifice, object *originator)
{
  /* Only players can make sacrifices on spell casting altars. */
  if (altar->inv && (!originator || originator->type != PLAYER))
    return 0;

  if (operate_altar (altar, &sacrifice))
    {
      /* Simple check.  Unfortunately, it means you can't cast magic bullet
       * with an altar.  We call it a Potion - altars are stationary - it
       * is up to map designers to use them properly.
       */
      if (altar->inv && altar->inv->type == SPELL)
        {
          new_draw_info_format (NDI_BLACK, 0, originator, "The altar casts %s.", &altar->inv->name);
          cast_spell (originator, altar, 0, altar->inv, NULL);
          /* If it is connected, push the button.  Fixes some problems with
           * old maps.
           */

/*          push_button (altar);*/
        }
      else
        {
          altar->value = 1;     /* works only once */
          push_button (altar);
        }

      return !sacrifice;
    }
  else
    return 0;
}

/**
 * Handles 'movement' of shop mats.
 * Returns 1 if 'op' was destroyed, 0 if not.
 * Largely re-written to not use nearly as many gotos, plus
 * some of this code just looked plain out of date.
 * MSW 2001-08-29
 */
int
apply_shop_mat (object *shop_mat, object *op)
{
  int rv = 0;
  double opinion;
  object *tmp, *next;

  SET_FLAG (op, FLAG_NO_APPLY); /* prevent loops */

  if (op->type != PLAYER)
    {
      /* Remove all the unpaid objects that may be carried here.
       * This could be pets or monsters that are somehow in
       * the shop.
       */
      for (tmp = op->inv; tmp; tmp = next)
        {
          next = tmp->below;

          if (QUERY_FLAG (tmp, FLAG_UNPAID))
            {
              int i = find_free_spot (tmp, op->map, op->x, op->y, 1, 9);

              remove_ob (tmp);

              if (i == -1)
                i = 0;

              tmp->map = op->map;
              tmp->x = op->x + freearr_x[i];
              tmp->y = op->y + freearr_y[i];
              insert_ob_in_map (tmp, op->map, op, 0);
            }
        }

      /* Don't teleport things like spell effects */
      if (QUERY_FLAG (op, FLAG_NO_PICK))
        return 0;

      /* unpaid objects, or non living objects, can't transfer by
       * shop mats.  Instead, put it on a nearby space.
       */
      if (QUERY_FLAG (op, FLAG_UNPAID) || !QUERY_FLAG (op, FLAG_ALIVE))
        {

          /* Somebody dropped an unpaid item, just move to an adjacent place. */
          int i = find_free_spot (op, op->map, op->x, op->y, 1, 9);

          if (i != -1)
            rv = transfer_ob (op, op->x + freearr_x[i], op->y + freearr_y[i], 0, shop_mat);

          return 0;
        }
      /* Removed code that checked for multipart objects - it appears that
       * the teleport function should be able to handle this just fine.
       */
      rv = teleport (shop_mat, SHOP_MAT, op);
    }
  else if (can_pay (op) && get_payment (op))
    {
      /* this is only used for players */
      rv = teleport (shop_mat, SHOP_MAT, op);

      if (shop_mat->msg)
        new_draw_info (NDI_UNIQUE, 0, op, shop_mat->msg);
      /* This check below is a bit simplistic - generally it should be correct,
       * but there is never a guarantee that the bottom space on the map is
       * actually the shop floor.
       */
      else if (!rv && !is_in_shop (op))
        {
          opinion = shopkeeper_approval (op->map, op);

          if (opinion > 0.9)
            new_draw_info (NDI_UNIQUE, 0, op, "The shopkeeper gives you a friendly wave.");
          else if (opinion > 0.75)
            new_draw_info (NDI_UNIQUE, 0, op, "The shopkeeper waves to you.");
          else if (opinion > 0.5)
            new_draw_info (NDI_UNIQUE, 0, op, "The shopkeeper ignores you.");
          else
            new_draw_info (NDI_UNIQUE, 0, op, "The shopkeeper glares at you with contempt.");
        }
    }
  else
    {
      /* if we get here, a player tried to leave a shop but was not able
       * to afford the items he has.  We try to move the player so that
       * they are not on the mat anymore
       */
      int i = find_free_spot (op, op->map, op->x, op->y, 1, 9);

      if (i == -1)
        {
          LOG (llevError, "Internal shop-mat problem.\n");
        }
      else
        {
          remove_ob (op);
          op->x += freearr_x[i];
          op->y += freearr_y[i];
          rv = insert_ob_in_map (op, op->map, shop_mat, 0) == NULL;
        }
    }

  CLEAR_FLAG (op, FLAG_NO_APPLY);
  return rv;
}

/**
 * Handles applying a sign.
 */
static void
apply_sign (object *op, object *sign, int autoapply)
{
  readable_message_type *msgType;
  char newbuf[HUGE_BUF];

  if (sign->msg == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Nothing is written on it.");
      return;
    }

  if (sign->stats.food)
    {
      if (sign->last_eat >= sign->stats.food)
        {
          if (!sign->move_on)
            new_draw_info (NDI_UNIQUE, 0, op, "You cannot read it anymore.");
          return;
        }

      if (!QUERY_FLAG (op, FLAG_WIZPASS))
        sign->last_eat++;
    }

  /* Sign or magic mouth?  Do we need to see it, or does it talk to us?
   * No way to know for sure.  The presumption is basically that if
   * move_on is zero, it needs to be manually applied (doesn't talk
   * to us).  
   */
  if (QUERY_FLAG (op, FLAG_BLIND) && !QUERY_FLAG (op, FLAG_WIZ) && !sign->move_on)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to read while blind.");
      return;
    }
  msgType = get_readable_message_type (sign);
  snprintf (newbuf, sizeof (newbuf), "%hhu %s", autoapply ? 1 : 0, &sign->msg);
  draw_ext_info (NDI_UNIQUE | NDI_NAVY, 0, op, msgType->message_type, msgType->message_subtype, newbuf, &sign->msg);
}

/**
 * 'victim' moves onto 'trap'
 * 'victim' leaves 'trap'
 * effect is determined by move_on/move_off of trap and move_type of victime.
 *
 * originator: Player, monster or other object that caused 'victim' to move
 * onto 'trap'.  Will receive messages caused by this action.  May be NULL.
 * However, some types of traps require an originator to function.
 */
void
move_apply (object *trap, object *victim, object *originator)
{
  static int recursion_depth = 0;

  /* Only exits affect DMs. */
  if (QUERY_FLAG (victim, FLAG_WIZPASS) && trap->type != EXIT && trap->type != SIGN)
    return;

  /* move_apply() is the most likely candidate for causing unwanted and
   * possibly unlimited recursion. 
   */
  /* The following was changed because it was causing perfeclty correct
   * maps to fail.  1)  it's not an error to recurse:
   * rune detonates, summoning monster.  monster lands on nearby rune.
   * nearby rune detonates.  This sort of recursion is expected and
   * proper.  This code was causing needless crashes. 
   */
  if (recursion_depth >= 500)
    {
      LOG (llevDebug, "WARNING: move_apply(): aborting recursion "
           "[trap arch %s, name %s; victim arch %s, name %s]\n", &trap->arch->name, &trap->name, &victim->arch->name, &victim->name);
      return;
    }
  recursion_depth++;
  if (trap->head)
    trap = trap->head;

  if (INVOKE_OBJECT (MOVE_TRIGGER, trap, ARG_OBJECT (victim), ARG_OBJECT (originator)))
    goto leave;

  switch (trap->type)
    {
      case PLAYERMOVER:
        if (trap->attacktype && (trap->level || victim->type != PLAYER) && !should_director_abort (trap, victim))
          {
            if (!trap->stats.maxsp)
              trap->stats.maxsp = 2;

            /* Is this correct?  From the docs, it doesn't look like it
             * should be divided by trap->speed
             */
            victim->speed_left = -FABS (trap->stats.maxsp * victim->speed / trap->speed);

            /* Just put in some sanity check.  I think there is a bug in the
             * above with some objects have zero speed, and thus the player
             * getting permanently paralyzed.
             */
            if (victim->speed_left < -50.0)
              victim->speed_left = -50.0;
            /*      LOG(llevDebug, "apply, playermove, player speed_left=%f\n", victim->speed_left); */
          }
        goto leave;

      case SPINNER:
        if (victim->direction)
          {
            victim->direction = absdir (victim->direction - trap->stats.sp);
            update_turn_face (victim);
          }
        goto leave;

      case DIRECTOR:
        if (victim->direction && !should_director_abort (trap, victim))
          {
            victim->direction = trap->stats.sp;
            update_turn_face (victim);
          }
        goto leave;

      case BUTTON:
      case PEDESTAL:
        update_button (trap);
        goto leave;

      case ALTAR:
        /* sacrifice victim on trap */
        apply_altar (trap, victim, originator);
        goto leave;

      case THROWN_OBJ:
        if (trap->inv == NULL)
          goto leave;
        /* fallthrough */

      case ARROW:
        /* bad bug: monster throw a object, make a step forwards, step on object ,
         * trigger this here and get hit by own missile - and will be own enemy.
         * Victim then is his own enemy and will start to kill herself (this is
         * removed) but we have not synced victim and his missile. To avoid senseless
         * action, we avoid hits here 
         */
        if ((QUERY_FLAG (victim, FLAG_ALIVE) && trap->speed) && trap->owner != victim)
          hit_with_arrow (trap, victim);
        goto leave;

      case SPELL_EFFECT:
        apply_spell_effect (trap, victim);
        goto leave;

      case TRAPDOOR:
        {
          int max, sound_was_played;
          object *ab, *ab_next;

          if (!trap->value)
            {
              int tot;

              for (ab = trap->above, tot = 0; ab != NULL; ab = ab->above)
                if ((ab->move_type && trap->move_on) || ab->move_type == 0)
                  tot += (ab->nrof ? ab->nrof : 1) * ab->weight + ab->carrying;

              if (!(trap->value = (tot > trap->weight) ? 1 : 0))
                goto leave;

              SET_ANIMATION (trap, trap->value);
              update_object (trap, UP_OBJ_FACE);
            }

          for (ab = trap->above, max = 100, sound_was_played = 0; --max && ab; ab = ab_next)
            {
              /* need to set this up, since if we do transfer the object,
               * ab->above would be bogus 
               */
              ab_next = ab->above;

              if ((ab->move_type && trap->move_on) || ab->move_type == 0)
                {
                  if (!sound_was_played)
                    {
                      play_sound_map (trap->map, trap->x, trap->y, SOUND_FALL_HOLE);
                      sound_was_played = 1;
                    }
                  new_draw_info (NDI_UNIQUE, 0, ab, "You fall into a trapdoor!");
                  transfer_ob (ab, (int) EXIT_X (trap), (int) EXIT_Y (trap), 0, ab);
                }
            }
          goto leave;
        }


      case CONVERTER:
        if (convert_item (victim, trap) < 0)
          {
            object *op;

            new_draw_info_format (NDI_UNIQUE, 0, originator, "The %s seems to be broken!", query_name (trap));

            op = get_archetype ("burnout");
            if (op != NULL)
              {
                op->x = trap->x;
                op->y = trap->y;
                insert_ob_in_map (op, trap->map, trap, 0);
              }
          }
        goto leave;

      case TRIGGER_BUTTON:
      case TRIGGER_PEDESTAL:
      case TRIGGER_ALTAR:
        check_trigger (trap, victim);
        goto leave;

      case DEEP_SWAMP:
        walk_on_deep_swamp (trap, victim);
        goto leave;

      case CHECK_INV:
        check_inv (victim, trap);
        goto leave;

      case HOLE:
        /* Hole not open? */
        if (trap->stats.wc > 0)
          goto leave;

        /* Is this a multipart monster and not the head?  If so, return.
         * Processing will happen if the head runs into the pit
         */
        if (victim->head)
          goto leave;

        play_sound_map (victim->map, victim->x, victim->y, SOUND_FALL_HOLE);
        new_draw_info (NDI_UNIQUE, 0, victim, "You fall through the hole!\n");
        transfer_ob (victim, EXIT_X (trap), EXIT_Y (trap), 1, victim);
        goto leave;

      case EXIT:
        if (victim->type == PLAYER && EXIT_PATH (trap))
          {
            /* Basically, don't show exits leading to random maps the
             * players output.
             */
            if (trap->msg && strncmp (EXIT_PATH (trap), "/!", 2) && strncmp (EXIT_PATH (trap), "/random/", 8))
              new_draw_info (NDI_NAVY, 0, victim, trap->msg);
            enter_exit (victim, trap);
          }
        goto leave;

      case ENCOUNTER:
        /* may be some leftovers on this */
        goto leave;

      case SHOP_MAT:
        apply_shop_mat (trap, victim);
        goto leave;

        /* Drop a certain amount of gold, and have one item identified */
      case IDENTIFY_ALTAR:
        apply_id_altar (victim, trap, originator);
        goto leave;

      case SIGN:
        if (victim->type != PLAYER && trap->stats.food > 0)
          goto leave;           /* monsters musn't apply magic_mouths with counters */

        apply_sign (victim, trap, 1);
        goto leave;

      case CONTAINER:
        if (victim->type == PLAYER)
          (void) esrv_apply_container (victim, trap);
        else
          (void) apply_container (victim, trap);
        goto leave;

      case RUNE:
      case TRAP:
        if (trap->level && QUERY_FLAG (victim, FLAG_ALIVE))
          {
            spring_trap (trap, victim);
          }
        goto leave;

      default:
        LOG (llevDebug, "name %s, arch %s, type %d with fly/walk on/off not "
             "handled in move_apply()\n", &trap->name, &trap->arch->name, trap->type);
        goto leave;
    }

leave:
  recursion_depth--;
}

/**
 * Handles reading a regular (ie not containing a spell) book.
 */
static void
apply_book (object *op, object *tmp)
{
  int lev_diff;
  object *skill_ob;

  if (QUERY_FLAG (op, FLAG_BLIND) && !QUERY_FLAG (op, FLAG_WIZ))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to read while blind.");
      return;
    }
  if (tmp->msg == NULL)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "You open the %s and find it empty.", &tmp->name);
      return;
    }

  /* need a literacy skill to read stuff! */
  skill_ob = find_skill_by_name (op, tmp->skill);
  if (!skill_ob)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to decipher the strange symbols.");
      return;
    }
  lev_diff = tmp->level - (skill_ob->level + 5);
  if (!QUERY_FLAG (op, FLAG_WIZ) && lev_diff > 0)
    {
      if (lev_diff < 2)
        new_draw_info (NDI_UNIQUE, 0, op, "This book is just barely beyond your comprehension.");
      else if (lev_diff < 3)
        new_draw_info (NDI_UNIQUE, 0, op, "This book is slightly beyond your comprehension.");
      else if (lev_diff < 5)
        new_draw_info (NDI_UNIQUE, 0, op, "This book is beyond your comprehension.");
      else if (lev_diff < 8)
        new_draw_info (NDI_UNIQUE, 0, op, "This book is quite a bit beyond your comprehension.");
      else if (lev_diff < 15)
        new_draw_info (NDI_UNIQUE, 0, op, "This book is way beyond your comprehension.");
      else
        new_draw_info (NDI_UNIQUE, 0, op, "This book is totally beyond your comprehension.");
      return;
    }

  readable_message_type *msgType = get_readable_message_type (tmp);

  draw_ext_info_format (NDI_UNIQUE | NDI_NAVY, 0, op,
                        msgType->message_type, msgType->message_subtype,
                        "You open the %s and start reading.\n%s", "%s\n%s", long_desc (tmp, op), &tmp->msg);

  /* gain xp from reading */
  if (!QUERY_FLAG (tmp, FLAG_NO_SKILL_IDENT))
    {                           /* only if not read before */
      int exp_gain = calc_skill_exp (op, tmp, skill_ob);

      if (!QUERY_FLAG (tmp, FLAG_IDENTIFIED))
        {
          /*exp_gain *= 2; because they just identified it too */
          SET_FLAG (tmp, FLAG_IDENTIFIED);
          /* If in a container, update how it looks */
          if (tmp->env)
            esrv_update_item (UPD_FLAGS | UPD_NAME, op, tmp);
          else
            op->contr->socket.update_look = 1;
        }
      change_exp (op, exp_gain, skill_ob->skill, 0);
      SET_FLAG (tmp, FLAG_NO_SKILL_IDENT);      /* so no more xp gained from this book */
    }
}

/**
 * Handles the applying of a skill scroll, calling learn_skill straight.
 * op is the person learning the skill, tmp is the skill scroll object
 */
static void
apply_skillscroll (object *op, object *tmp)
{
  switch ((int) learn_skill (op, tmp))
    {
      case 0:
        new_draw_info (NDI_UNIQUE, 0, op, "You already possess the knowledge ");
        new_draw_info_format (NDI_UNIQUE, 0, op, "held within the %s.\n", query_name (tmp));
        return;

      case 1:
        new_draw_info_format (NDI_UNIQUE, 0, op, "You succeed in learning %s", &tmp->skill);
        decrease_ob (tmp);
        return;

      default:
        new_draw_info_format (NDI_UNIQUE, 0, op, "You fail to learn the knowledge of the %s.\n", query_name (tmp));
        decrease_ob (tmp);
        return;
    }
}

/**
 * Actually makes op learn spell.
 * Informs player of what happens.
 */
void
do_learn_spell (object *op, object *spell, int special_prayer)
{
  object *tmp;

  if (op->type != PLAYER)
    {
      LOG (llevError, "BUG: do_learn_spell(): not a player\n");
      return;
    }

  /* Upgrade special prayers to normal prayers */
  if ((tmp = check_spell_known (op, spell->name)) != NULL)
    {
      if (special_prayer && !QUERY_FLAG (tmp, FLAG_STARTEQUIP))
        {
          LOG (llevError, "BUG: do_learn_spell(): spell already known, but not marked as startequip\n");
          return;
        }
      return;
    }

  play_sound_player_only (op->contr, SOUND_LEARN_SPELL, 0, 0);
  tmp = get_object ();
  copy_object (spell, tmp);
  insert_ob_in_ob (tmp, op);

  if (special_prayer)
    {
      SET_FLAG (tmp, FLAG_STARTEQUIP);
    }

  esrv_add_spells (op->contr, tmp);
}

/**
 * Erases spell from player's inventory.
 */
void
do_forget_spell (object *op, const char *spell)
{
  object *spob;

  if (op->type != PLAYER)
    {
      LOG (llevError, "BUG: do_forget_spell(): not a player\n");
      return;
    }
  if ((spob = check_spell_known (op, spell)) == NULL)
    {
      LOG (llevError, "BUG: do_forget_spell(): spell not known\n");
      return;
    }

  new_draw_info_format (NDI_UNIQUE | NDI_NAVY, 0, op, "You lose knowledge of %s.", spell);
  player_unready_range_ob (op->contr, spob);
  esrv_remove_spell (op->contr, spob);
  remove_ob (spob);
  free_object (spob);
}

/**
 * Handles player applying a spellbook.
 * Checks whether player has knowledge of required skill, doesn't already know the spell,
 * stuff like that. Random learning failure too.
 */
static void
apply_spellbook (object *op, object *tmp)
{
  object *skop, *spell, *spell_skill;

  if (QUERY_FLAG (op, FLAG_BLIND) && !QUERY_FLAG (op, FLAG_WIZ))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to read while blind.");
      return;
    }

  /* artifact_spellbooks have 'slaying' field point to a spell name,
   * instead of having their spell stored in stats.sp.  These are
   * legacy spellbooks
   */

  if (tmp->slaying != NULL)
    {
      spell = arch_to_object (find_archetype_by_object_name (tmp->slaying));
      if (!spell)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "The book's formula for %s is incomplete", &tmp->slaying);
          return;
        }
      else
        insert_ob_in_ob (spell, tmp);
      tmp->slaying = NULL;
    }

  skop = find_skill_by_name (op, tmp->skill);

  /* need a literacy skill to learn spells. Also, having a literacy level
   * lower than the spell will make learning the spell more difficult */
  if (!skop)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You can't read! Your attempt fails.");
      return;
    }

  spell = tmp->inv;
  if (!spell)
    {
      LOG (llevError, "apply_spellbook: Book %s has no spell in it!\n", &tmp->name);
      new_draw_info (NDI_UNIQUE, 0, op, "The spellbook symbols make no sense.");
      return;
    }
  if (spell->level > (skop->level + 10))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to decipher the strange symbols.");
      return;
    }

  new_draw_info_format (NDI_UNIQUE, 0, op, "The spellbook contains the %s level spell %s.", get_levelnumber (spell->level), &spell->name);

  if (!QUERY_FLAG (tmp, FLAG_IDENTIFIED))
    {
      identify (tmp);
      if (tmp->env)
        esrv_update_item (UPD_FLAGS | UPD_NAME, op, tmp);
      else
        op->contr->socket.update_look = 1;
    }

  /* I removed the check for special_prayer_mark here - it didn't make
   * a lot of sense - special prayers are not found in spellbooks, and
   * if the player doesn't know the spell, doesn't make a lot of sense that
   * they would have a special prayer mark.
   */
  if (check_spell_known (op, spell->name))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You already know that spell.\n");
      return;
    }

  if (spell->skill)
    {
      spell_skill = find_skill_by_name (op, spell->skill);

      if (!spell_skill)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You lack the skill %s to use this spell", &spell->skill);
          return;
        }

      if (spell_skill->level < spell->level)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You need to be level %d in %s to learn this spell.", spell->level, &spell->skill);
          return;
        }
    }

  /* Logic as follows
   *
   *  1- MU spells use Int to learn, Cleric spells use Wisdom
   *
   *  2- The learner's skill level in literacy adjusts the chance to learn
   *     a spell.
   *
   *  3 -Automatically fail to learn if you read while confused
   * 
   * Overall, chances are the same but a player will find having a high 
   * literacy rate very useful!  -b.t. 
   */
  if (QUERY_FLAG (op, FLAG_CONFUSED))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "In your confused state you flub the wording of the text!");
      scroll_failure (op, 0 - random_roll (0, spell->level, op, PREFER_LOW), MAX (spell->stats.sp, spell->stats.grace));
    }
  else if (QUERY_FLAG (tmp, FLAG_STARTEQUIP) ||
           (random_roll (0, 100, op, PREFER_LOW) - (5 * skop->level)) < learn_spell[spell->stats.grace ? op->stats.Wis : op->stats.Int])
    {

      new_draw_info (NDI_UNIQUE, 0, op, "You succeed in learning the spell!");
      do_learn_spell (op, spell, 0);

      /* xp gain to literacy for spell learning */
      if (!QUERY_FLAG (tmp, FLAG_STARTEQUIP))
        change_exp (op, calc_skill_exp (op, tmp, skop), skop->skill, 0);
    }
  else
    {
      play_sound_player_only (op->contr, SOUND_FUMBLE_SPELL, 0, 0);
      new_draw_info (NDI_UNIQUE, 0, op, "You fail to learn the spell.\n");
    }
  decrease_ob (tmp);
}

/**
 * Handles applying a spell scroll.
 */
void
apply_scroll (object *op, object *tmp, int dir)
{
  object *skop;

  if (QUERY_FLAG (op, FLAG_BLIND) && !QUERY_FLAG (op, FLAG_WIZ))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You are unable to read while blind.");
      return;
    }

  if (!tmp->inv || tmp->inv->type != SPELL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "The scroll just doesn't make sense!");
      return;
    }

  if (op->type == PLAYER)
    {
      /* players need a literacy skill to read stuff! */
      int exp_gain = 0;

      /* hard code literacy - tmp->skill points to where the exp
       * should go for anything killed by the spell.
       */
      skop = find_skill_by_name (op, skill_names[SK_LITERACY]);

      if (!skop)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "You are unable to decipher the strange symbols.");
          return;
        }

      if ((exp_gain = calc_skill_exp (op, tmp, skop)))
        change_exp (op, exp_gain, skop->skill, 0);
    }

  if (!QUERY_FLAG (tmp, FLAG_IDENTIFIED))
    identify (tmp);

  new_draw_info_format (NDI_BLACK, 0, op, "The scroll of %s turns to dust.", &tmp->inv->name);


  cast_spell (op, tmp, dir, tmp->inv, NULL);
  decrease_ob (tmp);
}

/**
 * Applies a treasure object - by default, chest.  op
 * is the person doing the applying, tmp is the treasure
 * chest.
 */
static void
apply_treasure (object *op, object *tmp)
{
  object *treas;


  /* Nice side effect of new treasure creation method is that the treasure
   * for the chest is done when the chest is created, and put into the chest
   * inventory.  So that when the chest burns up, the items still exist.  Also
   * prevents people fromt moving chests to more difficult maps to get better
   * treasure
   */

  treas = tmp->inv;
  if (treas == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "The chest was empty.");
      decrease_ob (tmp);
      return;
    }
  while (tmp->inv)
    {
      treas = tmp->inv;

      remove_ob (treas);
      new_draw_info_format (NDI_UNIQUE, 0, op, "You find %s in the chest.", query_name (treas));

      treas->x = op->x;
      treas->y = op->y;
      treas = insert_ob_in_map (treas, op->map, op, INS_BELOW_ORIGINATOR);

      if (treas && (treas->type == RUNE || treas->type == TRAP) && treas->level && QUERY_FLAG (op, FLAG_ALIVE))
        spring_trap (treas, op);
      /* If either player or container was destroyed, no need to do
       * further processing.  I think this should be enclused with
       * spring trap above, as I don't think there is otherwise
       * any way for the treasure chest or player to get killed
       */
      if (op->destroyed () || tmp->destroyed ())
        break;
    }

  if (!tmp->destroyed () && tmp->inv == NULL)
    decrease_ob (tmp);

}

/**
 * op eats food.
 * If player, takes care of messages and dragon special food.
 */
static void
apply_food (object *op, object *tmp)
{
  int capacity_remaining;

  if (op->type != PLAYER)
    op->stats.hp = op->stats.maxhp;
  else
    {
      /* check if this is a dragon (player), eating some flesh */
      if (tmp->type == FLESH && is_dragon_pl (op) && dragon_eat_flesh (op, tmp))
        ;
      else
        {
          /* usual case - no dragon meal: */
          if (op->stats.food + tmp->stats.food > 999)
            {
              if (tmp->type == FOOD || tmp->type == FLESH)
                new_draw_info (NDI_UNIQUE, 0, op, "You feel full, but what a waste of food!");
              else
                new_draw_info (NDI_UNIQUE, 0, op, "Most of the drink goes down your face not your throat!");
            }

          if (!QUERY_FLAG (tmp, FLAG_CURSED))
            {
              char buf[MAX_BUF];

              if (!is_dragon_pl (op))
                {
                  /* eating message for normal players */
                  if (tmp->type == DRINK)
                    sprintf (buf, "Ahhh...that %s tasted good.", &tmp->name);
                  else
                    sprintf (buf, "The %s tasted %s", &tmp->name, tmp->type == FLESH ? "terrible!" : "good.");
                }
              else
                {
                  /* eating message for dragon players */
                  sprintf (buf, "The %s tasted terrible!", &tmp->name);
                }

              new_draw_info (NDI_UNIQUE, 0, op, buf);
              capacity_remaining = 999 - op->stats.food;
              op->stats.food += tmp->stats.food;
              if (capacity_remaining < tmp->stats.food)
                op->stats.hp += capacity_remaining / 50;
              else
                op->stats.hp += tmp->stats.food / 50;
              if (op->stats.hp > op->stats.maxhp)
                op->stats.hp = op->stats.maxhp;
              if (op->stats.food > 999)
                op->stats.food = 999;
            }

          /* special food hack -b.t. */
          if (tmp->title || QUERY_FLAG (tmp, FLAG_CURSED))
            eat_special_food (op, tmp);
        }
    }
  handle_apply_yield (tmp);
  decrease_ob (tmp);
}

/**
 * A dragon is eating some flesh. If the flesh contains resistances,
 * there is a chance for the dragon's skin to get improved.
 *
 * attributes:
 *     object *op        the object (dragon player) eating the flesh
 *     object *meal      the flesh item, getting chewed in dragon's mouth
 * return:
 *     int               1 if eating successful, 0 if it doesn't work
 */
int
dragon_eat_flesh (object *op, object *meal)
{
  object *skin = NULL;          /* pointer to dragon skin force */
  object *abil = NULL;          /* pointer to dragon ability force */
  object *tmp = NULL;           /* tmp. object */

  char buf[MAX_BUF];            /* tmp. string buffer */
  double chance;                /* improvement-chance of one resistance type */
  double totalchance = 1;       /* total chance of gaining one resistance */
  double bonus = 0;             /* level bonus (improvement is easier at lowlevel) */
  double mbonus = 0;            /* monster bonus */
  int atnr_winner[NROFATTACKS]; /* winning candidates for resistance improvement */
  int winners = 0;              /* number of winners */
  int i;                        /* index */

  /* let's make sure and doublecheck the parameters */
  if (meal->type != FLESH || !is_dragon_pl (op))
    return 0;

  /* now grab the 'dragon_skin'- and 'dragon_ability'-forces
     from the player's inventory */
  for (tmp = op->inv; tmp != NULL; tmp = tmp->below)
    {
      if (tmp->type == FORCE)
        {
          if (strcmp (tmp->arch->name, "dragon_skin_force") == 0)
            skin = tmp;
          else if (strcmp (tmp->arch->name, "dragon_ability_force") == 0)
            abil = tmp;
        }
    }

  /* if either skin or ability are missing, this is an old player
     which is not to be considered a dragon -> bail out */
  if (skin == NULL || abil == NULL)
    return 0;

  /* now start by filling stomache and health, according to food-value */
  if ((999 - op->stats.food) < meal->stats.food)
    op->stats.hp += (999 - op->stats.food) / 50;
  else
    op->stats.hp += meal->stats.food / 50;
  if (op->stats.hp > op->stats.maxhp)
    op->stats.hp = op->stats.maxhp;

  op->stats.food = MIN (999, op->stats.food + meal->stats.food);

  /*LOG(llevDebug, "-> player: %d, flesh: %d\n", op->level, meal->level); */

  /* on to the interesting part: chances for adding resistance */
  for (i = 0; i < NROFATTACKS; i++)
    {
      if (meal->resist[i] > 0 && atnr_is_dragon_enabled (i))
        {
          /* got positive resistance, now calculate improvement chance (0-100) */

          /* this bonus makes resistance increase easier at lower levels */
          bonus = (settings.max_level - op->level) * 30. / ((double) settings.max_level);
          if (i == abil->stats.exp)
            bonus += 5;         /* additional bonus for resistance of ability-focus */

          /* monster bonus increases with level, because high-level
             flesh is too rare */
          mbonus = op->level * 20. / ((double) settings.max_level);

          chance = (((double) MIN (op->level + bonus, meal->level + bonus + mbonus)) * 100. /
                    ((double) settings.max_level)) - skin->resist[i];

          if (chance >= 0.)
            chance += 1.;
          else
            chance = (chance < -12) ? 0. : 1. / pow (2., -chance);

          /* chance is proportional to amount of resistance (max. 50) */
          chance *= ((double) (MIN (meal->resist[i], 50))) / 50.;

          /* doubled chance for resistance of ability-focus */
          if (i == abil->stats.exp)
            chance = MIN (100., chance * 2.);

          /* now make the throw and save all winners (Don't insert luck bonus here!) */
          if (RANDOM () % 10000 < (int) (chance * 100))
            {
              atnr_winner[winners] = i;
              winners++;
            }

          if (chance >= 0.01)
            totalchance *= 1 - chance / 100;

          /*LOG(llevDebug, "   %s: bonus %.1f, chance %.1f\n", attacks[i], bonus, chance); */
        }
    }

  /* inverse totalchance as until now we have the failure-chance   */
  totalchance = 100 - totalchance * 100;
  /* print message according to totalchance */
  if (totalchance > 50.)
    sprintf (buf, "Hmm! The %s tasted delicious!", &meal->name);
  else if (totalchance > 10.)
    sprintf (buf, "The %s tasted very good.", &meal->name);
  else if (totalchance > 1.)
    sprintf (buf, "The %s tasted good.", &meal->name);
  else if (totalchance > 0.1)
    sprintf (buf, "The %s tasted bland.", &meal->name);
  else if (totalchance >= 0.01)
    sprintf (buf, "The %s had a boring taste.", &meal->name);
  else if (meal->last_eat > 0 && atnr_is_dragon_enabled (meal->last_eat))
    sprintf (buf, "The %s tasted strange.", &meal->name);
  else
    sprintf (buf, "The %s had no taste.", &meal->name);
  new_draw_info (NDI_UNIQUE, 0, op, buf);

  /* now choose a winner if we have any */
  i = -1;
  if (winners > 0)
    i = atnr_winner[RANDOM () % winners];

  if (i >= 0 && i < NROFATTACKS && skin->resist[i] < 95)
    {
      /* resistance increased! */
      skin->resist[i]++;
      fix_player (op);

      sprintf (buf, "Your skin is now more resistant to %s!", change_resist_msg[i]);
      new_draw_info (NDI_UNIQUE | NDI_RED, 0, op, buf);
    }

  /* if this flesh contains a new ability focus, we mark it
     into the ability_force and it will take effect on next level */
  if (meal->last_eat > 0 && atnr_is_dragon_enabled (meal->last_eat) && meal->last_eat != abil->last_eat)
    {
      abil->last_eat = meal->last_eat;  /* write: last_eat <new attnr focus> */

      if (meal->last_eat != abil->stats.exp)
        {
          sprintf (buf, "Your metabolism prepares to focus on %s!", change_resist_msg[meal->last_eat]);
          new_draw_info (NDI_UNIQUE, 0, op, buf);
          sprintf (buf, "The change will happen at level %d", abil->level + 1);
          new_draw_info (NDI_UNIQUE, 0, op, buf);
        }
      else
        {
          sprintf (buf, "Your metabolism will continue to focus on %s.", change_resist_msg[meal->last_eat]);
          new_draw_info (NDI_UNIQUE, 0, op, buf);
          abil->last_eat = 0;
        }
    }
  return 1;
}

static void
apply_savebed (object *pl)
{
#ifndef COZY_SERVER
  if (!pl->contr->name_changed || !pl->stats.exp)
    {
      new_draw_info (NDI_UNIQUE, 0, pl, "You don't deserve to save your character yet.");
      return;
    }
#endif
  INVOKE_PLAYER (LOGOUT, pl->contr);
  /* Need to call terminate_all_pets()  before we remove the player ob */
  terminate_all_pets (pl);
  remove_ob (pl);
  pl->direction = 0;
  new_draw_info_format (NDI_UNIQUE | NDI_ALL | NDI_DK_ORANGE, 5, pl, "%s leaves the game.", &pl->name);

  /* update respawn position */
  strcpy (pl->contr->savebed_map, pl->map->path);
  pl->contr->bed_x = pl->x;
  pl->contr->bed_y = pl->y;

  strcpy (pl->contr->killer, "left");
  check_score (pl);             /* Always check score */
  (void) save_player (pl, 0);
  pl->map->players--;
#if MAP_MAXTIMEOUT
  MAP_SWAP_TIME (pl->map) = MAP_TIMEOUT (pl->map);
#endif
  play_again (pl);
  pl->speed = 0;
  update_ob_speed (pl);
}

/**
 * Handles applying an improve armor scroll.
 * Does some sanity checks, then calls improve_armour.
 */
static void
apply_armour_improver (object *op, object *tmp)
{
  object *armor;

  if (!QUERY_FLAG (op, FLAG_WIZCAST) && (get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_NO_MAGIC))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Something blocks the magic of the scroll.");
      return;
    }
  armor = find_marked_object (op);
  if (!armor)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You need to mark an armor object.");
      return;
    }
  if (armor->type != ARMOUR
      && armor->type != CLOAK
      && armor->type != BOOTS && armor->type != GLOVES && armor->type != BRACERS && armor->type != SHIELD && armor->type != HELMET)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Your marked item is not armour!\n");
      return;
    }

  new_draw_info (NDI_UNIQUE, 0, op, "Applying armour enchantment.");
  improve_armour (op, tmp, armor);
}


extern void
apply_poison (object *op, object *tmp)
{
  if (op->type == PLAYER)
    {
      play_sound_player_only (op->contr, SOUND_DRINK_POISON, 0, 0);
      new_draw_info (NDI_UNIQUE, 0, op, "Yech!  That tasted poisonous!");
      strcpy (op->contr->killer, "poisonous booze");
    }
  if (tmp->stats.hp > 0)
    {
      LOG (llevDebug, "Trying to poison player/monster for %d hp\n", tmp->stats.hp);
      hit_player (op, tmp->stats.hp, tmp, AT_POISON, 1);
    }
  op->stats.food -= op->stats.food / 4;
  handle_apply_yield (tmp);
  decrease_ob (tmp);
}

/**
 * This fonction return true if the exit is not a 2 ways one or it is 2 ways, valid exit.
 * A valid 2 way exit means:
 *   -You can come back (there is another exit at the other side)
 *   -You are
 *         � the owner of the exit
 *         � or in the same party as the owner
 *
 * Note: a owner in a 2 way exit is saved as the owner's name
 * in the field exit->name cause the field exit->owner doesn't
 * survive in the swapping (in fact the whole exit doesn't survive).
 */
int
is_legal_2ways_exit (object *op, object *exit)
{
  object *tmp;
  object *exit_owner;
  player *pp;
  mapstruct *exitmap;

  if (exit->stats.exp != 1)
    return 1;                   /*This is not a 2 way, so it is legal */
  if (!has_been_loaded (EXIT_PATH (exit)) && exit->race)
    return 0;                   /* This is a reset town portal */
  /* To know if an exit has a correspondant, we look at
   * all the exits in destination and try to find one with same path as
   * the current exit's position */
  if (!strncmp (EXIT_PATH (exit), settings.localdir, strlen (settings.localdir)))
    exitmap = ready_map_name (EXIT_PATH (exit), MAP_PLAYER_UNIQUE);
  else
    exitmap = ready_map_name (EXIT_PATH (exit), 0);
  if (exitmap)
    {
      tmp = get_map_ob (exitmap, EXIT_X (exit), EXIT_Y (exit));
      if (!tmp)
        return 0;
      for ((tmp = get_map_ob (exitmap, EXIT_X (exit), EXIT_Y (exit))); tmp; tmp = tmp->above)
        {
          if (tmp->type != EXIT)
            continue;           /*Not an exit */
          if (!EXIT_PATH (tmp))
            continue;           /*Not a valid exit */
          if ((EXIT_X (tmp) != exit->x) || (EXIT_Y (tmp) != exit->y))
            continue;           /*Not in the same place */
          if (strcmp (exit->map->path, EXIT_PATH (tmp)) != 0)
            continue;           /*Not in the same map */

          /* From here we have found the exit is valid. However we do
           * here the check of the exit owner. It is important for the
           * town portals to prevent strangers from visiting your appartments
           */
          if (!exit->race)
            return 1;           /*No owner, free for all! */
          exit_owner = NULL;
          for (pp = first_player; pp; pp = pp->next)
            {
              if (!pp->ob)
                continue;
              if (pp->ob->name != exit->race)
                continue;
              exit_owner = pp->ob;      /*We found a player which correspond to the player name */
              break;
            }
          if (!exit_owner)
            return 0;           /* No more owner */
          if (exit_owner->contr == op->contr)
            return 1;           /*It is your exit */
          if (exit_owner &&     /*There is a owner */
              (op->contr) &&    /*A player tries to pass */
              ((exit_owner->contr->party == NULL) ||    /*No pass if controller has no party */
               (exit_owner->contr->party != op->contr->party))) /* Or not the same as op */
            return 0;
          return 1;
        }
    }
  return 0;
}


/**
 * Main apply handler.
 *
 * Checks for unpaid items before applying.
 *
 * Return value:
 *   0: player or monster can't apply objects of that type
 *   1: has been applied, or there was an error applying the object
 *   2: objects of that type can't be applied if not in inventory
 *
 * op is the object that is causing object to be applied, tmp is the object
 * being applied.
 *
 * aflag is special (always apply/unapply) flags.  Nothing is done with
 * them in this function - they are passed to apply_special
 */

int
manual_apply (object *op, object *tmp, int aflag)
{
  if (tmp->head)
    tmp = tmp->head;

  if (QUERY_FLAG (tmp, FLAG_UNPAID) && !QUERY_FLAG (tmp, FLAG_APPLIED))
    {
      if (op->type == PLAYER)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "You should pay for it first.");
          return 1;
        }
      else
        {
          return 0;             /* monsters just skip unpaid items */
        }
    }

  if (INVOKE_OBJECT (APPLY, tmp, ARG_OBJECT (op)))
    return RESULT_INT (0);

  switch (tmp->type)
    {

      case CF_HANDLE:
        new_draw_info (NDI_UNIQUE, 0, op, "You turn the handle.");
        play_sound_map (op->map, op->x, op->y, SOUND_TURN_HANDLE);
        tmp->value = tmp->value ? 0 : 1;
        SET_ANIMATION (tmp, tmp->value);
        update_object (tmp, UP_OBJ_FACE);
        push_button (tmp);
        return 1;

      case TRIGGER:
        if (check_trigger (tmp, op))
          {
            new_draw_info (NDI_UNIQUE, 0, op, "You turn the handle.");
            play_sound_map (tmp->map, tmp->x, tmp->y, SOUND_TURN_HANDLE);
          }
        else
          {
            new_draw_info (NDI_UNIQUE, 0, op, "The handle doesn't move.");
          }
        return 1;

      case EXIT:
        if (op->type != PLAYER)
          return 0;
        if (!EXIT_PATH (tmp) || !is_legal_2ways_exit (op, tmp))
          {
            new_draw_info_format (NDI_UNIQUE, 0, op, "The %s is closed.", query_name (tmp));
          }
        else
          {
            /* Don't display messages for random maps. */
            if (tmp->msg && strncmp (EXIT_PATH (tmp), "/!", 2) && strncmp (EXIT_PATH (tmp), "/random/", 8))
              new_draw_info (NDI_NAVY, 0, op, tmp->msg);
            enter_exit (op, tmp);
          }
        return 1;

      case SIGN:
        apply_sign (op, tmp, 0);
        return 1;

      case BOOK:
        if (op->type == PLAYER)
          {
            apply_book (op, tmp);
            return 1;
          }
        else
          {
            return 0;
          }

      case SKILLSCROLL:
        if (op->type == PLAYER)
          {
            apply_skillscroll (op, tmp);
            return 1;
          }
        return 0;

      case SPELLBOOK:
        if (op->type == PLAYER)
          {
            apply_spellbook (op, tmp);
            return 1;
          }
        return 0;

      case SCROLL:
        apply_scroll (op, tmp, 0);
        return 1;

      case POTION:
        (void) apply_potion (op, tmp);
        return 1;

        /* Eneq(@csd.uu.se): Handle apply on containers. */
      case CLOSE_CON:
        if (op->type == PLAYER)
          (void) esrv_apply_container (op, tmp->env);
        else
          (void) apply_container (op, tmp->env);
        return 1;

      case CONTAINER:
        if (op->type == PLAYER)
          (void) esrv_apply_container (op, tmp);
        else
          (void) apply_container (op, tmp);
        return 1;

      case TREASURE:
        if (op->type == PLAYER)
          {
            apply_treasure (op, tmp);
            return 1;
          }
        else
          {
            return 0;
          }

      case WEAPON:
      case ARMOUR:
      case BOOTS:
      case GLOVES:
      case AMULET:
      case GIRDLE:
      case BRACERS:
      case SHIELD:
      case HELMET:
      case RING:
      case CLOAK:
      case WAND:
      case ROD:
      case HORN:
      case SKILL:
      case BOW:
      case LAMP:
      case BUILDER:
      case SKILL_TOOL:
        if (tmp->env != op)
          return 2;             /* not in inventory */
        (void) apply_special (op, tmp, aflag);
        return 1;

      case DRINK:
      case FOOD:
      case FLESH:
        apply_food (op, tmp);
        return 1;

      case POISON:
        apply_poison (op, tmp);
        return 1;

      case SAVEBED:
        if (op->type == PLAYER)
          {
            apply_savebed (op);
            return 1;
          }
        else
          {
            return 0;
          }

      case ARMOUR_IMPROVER:
        if (op->type == PLAYER)
          {
            apply_armour_improver (op, tmp);
            return 1;
          }
        else
          {
            return 0;
          }

      case WEAPON_IMPROVER:
        (void) check_improve_weapon (op, tmp);
        return 1;

      case CLOCK:
        if (op->type == PLAYER)
          {
            char buf[MAX_BUF];
            timeofday_t tod;

            get_tod (&tod);
            sprintf (buf, "It is %d minute%s past %d o'clock %s",
                     tod.minute + 1, ((tod.minute + 1 < 2) ? "" : "s"),
                     ((tod.hour % 14 == 0) ? 14 : ((tod.hour) % 14)), ((tod.hour >= 14) ? "pm" : "am"));
            play_sound_player_only (op->contr, SOUND_CLOCK, 0, 0);
            new_draw_info (NDI_UNIQUE, 0, op, buf);
            return 1;
          }
        else
          {
            return 0;
          }

      case MENU:
        if (op->type == PLAYER)
          {
            shop_listing (op);
            return 1;
          }
        else
          {
            return 0;
          }

      case POWER_CRYSTAL:
        apply_power_crystal (op, tmp);  /*  see egoitem.c */
        return 1;

      case LIGHTER:            /* for lighting torches/lanterns/etc */
        if (op->type == PLAYER)
          {
            apply_lighter (op, tmp);
            return 1;
          }
        else
          {
            return 0;
          }

      case ITEM_TRANSFORMER:
        apply_item_transformer (op, tmp);
        return 1;

      default:
        return 0;
    }
}


/* quiet suppresses the "don't know how to apply" and "you must get it first"
 * messages as needed by player_apply_below().  But there can still be
 * "but you are floating high above the ground" messages.
 *
 * Same return value as apply() function.
 */
int
player_apply (object *pl, object *op, int aflag, int quiet)
{
  int tmp;

  if (op->env == NULL && (pl->move_type & MOVE_FLYING))
    {
      /* player is flying and applying object not in inventory */
      if (!QUERY_FLAG (pl, FLAG_WIZ) && !(op->move_type & MOVE_FLYING))
        {
          new_draw_info (NDI_UNIQUE, 0, pl, "But you are floating high " "above the ground!");
          return 0;
        }
    }

  /* Check for PLAYER to avoid a DM to disappear in a puff of smoke if
   * applied.
   */
  if (op->type != PLAYER && QUERY_FLAG (op, FLAG_WAS_WIZ) && !QUERY_FLAG (pl, FLAG_WAS_WIZ))
    {
      play_sound_map (pl->map, pl->x, pl->y, SOUND_OB_EVAPORATE);
      new_draw_info (NDI_UNIQUE, 0, pl, "The object disappears in a puff " "of smoke!");
      new_draw_info (NDI_UNIQUE, 0, pl, "It must have been an illusion.");
      remove_ob (op);
      free_object (op);
      return 1;
    }

  pl->contr->last_used = op;
  pl->contr->last_used_id = op->count;

  tmp = manual_apply (pl, op, aflag);
  if (!quiet)
    {
      if (tmp == 0)
        new_draw_info_format (NDI_UNIQUE, 0, pl, "I don't know how to apply the %s.", query_name (op));
      else if (tmp == 2)
        new_draw_info_format (NDI_UNIQUE, 0, pl, "You must get it first!\n");
    }
  return tmp;
}

/**
 * player_apply_below attempts to apply the object 'below' the player.
 * If the player has an open container, we use that for below, otherwise
 * we use the ground.
 */

void
player_apply_below (object *pl)
{
  object *tmp, *next;
  int floors;

  /* If using a container, set the starting item to be the top
   * item in the container.  Otherwise, use the map.
   */
  tmp = (pl->container != NULL) ? pl->container->inv : pl->below;

  /* This is perhaps more complicated.  However, I want to make sure that
   * we don't use a corrupt pointer for the next object, so we get the
   * next object in the stack before applying.  This is can only be a
   * problem if player_apply() has a bug in that it uses the object but does
   * not return a proper value.
   */
  for (floors = 0; tmp != NULL; tmp = next)
    {
      next = tmp->below;
      if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
        floors++;
      else if (floors > 0)
        return;                 /* process only floor objects after first floor object */

      /* If it is visible, player can apply it.  If it is applied by
       * person moving on it, also activate.  Added code to make it
       * so that at least one of players movement types be that which
       * the item needs.
       */
      if (!tmp->invisible || (tmp->move_on & pl->move_type))
        {
          if (player_apply (pl, tmp, 0, 1) == 1)
            return;
        }
      if (floors >= 2)
        return;                 /* process at most two floor objects */
    }
}

/**
 * Unapplies specified item.
 * No check done on cursed/damned.
 * Break this out of apply_special - this is just done
 * to keep the size of apply_special to a more managable size.
 */
static int
unapply_special (object *who, object *op, int aflags)
{
  if (INVOKE_OBJECT (BE_UNREADY, op, ARG_OBJECT (who), ARG_INT (aflags)) || INVOKE_OBJECT (UNREADY, who, ARG_OBJECT (op), ARG_INT (aflags)))
    return RESULT_INT (0);

  object *tmp2;

  CLEAR_FLAG (op, FLAG_APPLIED);
  switch (op->type)
    {
      case WEAPON:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You unwield %s.", query_name (op));

        (void) change_abil (who, op);
        if (QUERY_FLAG (who, FLAG_READY_WEAPON))
          CLEAR_FLAG (who, FLAG_READY_WEAPON);
        clear_skill (who);
        break;

      case SKILL:              /* allows objects to impart skills */
      case SKILL_TOOL:
        if (op != who->chosen_skill)
          {
            LOG (llevError, "BUG: apply_special(): applied skill is not a chosen skill\n");
          }
        if (who->type == PLAYER)
          {
            if (who->contr->shoottype == range_skill)
              who->contr->shoottype = range_none;
            if (!op->invisible)
              {
                new_draw_info_format (NDI_UNIQUE, 0, who, "You stop using the %s.", query_name (op));
              }
            else
              {
                new_draw_info_format (NDI_UNIQUE, 0, who, "You can no longer use the skill: %s.", &op->skill);
              }
          }
        (void) change_abil (who, op);
        who->chosen_skill = NULL;
        CLEAR_FLAG (who, FLAG_READY_SKILL);
        break;

      case ARMOUR:
      case HELMET:
      case SHIELD:
      case RING:
      case BOOTS:
      case GLOVES:
      case AMULET:
      case GIRDLE:
      case BRACERS:
      case CLOAK:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You unwear %s.", query_name (op));
        (void) change_abil (who, op);
        break;
      case LAMP:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You turn off your %s.", &op->name);
        tmp2 = arch_to_object (op->other_arch);
        tmp2->x = op->x;
        tmp2->y = op->y;
        tmp2->map = op->map;
        tmp2->below = op->below;
        tmp2->above = op->above;
        tmp2->stats.food = op->stats.food;
        CLEAR_FLAG (tmp2, FLAG_APPLIED);

        if (QUERY_FLAG (op, FLAG_INV_LOCKED))
          SET_FLAG (tmp2, FLAG_INV_LOCKED);

        if (who->type == PLAYER)
          esrv_del_item (who->contr, op->count);

        remove_ob (op);
        free_object (op);
        insert_ob_in_ob (tmp2, who);
        fix_player (who);
        if (QUERY_FLAG (op, FLAG_CURSED) || QUERY_FLAG (op, FLAG_DAMNED))
          {
            if (who->type == PLAYER)
              {
                new_draw_info (NDI_UNIQUE, 0, who, "Oops, it feels deadly cold!");
                SET_FLAG (tmp2, FLAG_KNOWN_CURSED);
              }
          }
        if (who->type == PLAYER)
          esrv_send_item (who, tmp2);
        return 1;               /* otherwise, an attempt to drop causes problems */
        break;
      case BOW:
      case WAND:
      case ROD:
      case HORN:
        clear_skill (who);
        new_draw_info_format (NDI_UNIQUE, 0, who, "You unready %s.", query_name (op));
        if (who->type == PLAYER)
          {
            who->contr->shoottype = range_none;
          }
        else
          {
            if (op->type == BOW)
              CLEAR_FLAG (who, FLAG_READY_BOW);
            else
              CLEAR_FLAG (who, FLAG_READY_RANGE);
          }
        break;

      case BUILDER:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You unready %s.", query_name (op));
        who->contr->shoottype = range_none;
        who->contr->ranges[range_builder] = NULL;
        break;

      default:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You unapply %s.", query_name (op));
        break;
    }

  fix_player (who);

  if (!(aflags & AP_NO_MERGE))
    {
      object *tmp;

      tmp = merge_ob (op, NULL);
      if (who->type == PLAYER)
        {
          if (tmp)
            {                   /* it was merged */
              esrv_del_item (who->contr, op->count);
              op = tmp;
            }

          esrv_send_item (who, op);
        }
    }
  return 0;
}

/**
 * Returns the object that is using location 'loc'.
 * Note that 'start' is the first object to start examing - we
 * then go through the below of this.  In this way, you can do
 * something like:
 * tmp = get_item_from_body_location(who->inv, 1);
 * if (tmp) tmp1 = get_item_from_body_location(tmp->below, 1);
 * to find the second object that may use this location, etc.
 * Returns NULL if no match is found.
 * loc is the index into the array we are looking for a match.
 * don't return invisible objects unless they are skill objects
 * invisible other objects that use
 * up body locations can be used as restrictions.
 */
object *
get_item_from_body_location (object *start, int loc)
{
  object *tmp;

  if (!start)
    return NULL;

  for (tmp = start; tmp; tmp = tmp->below)
    if (QUERY_FLAG (tmp, FLAG_APPLIED) && tmp->body_info[loc] && (!tmp->invisible || tmp->type == SKILL))
      return tmp;

  return NULL;
}


/**
 * 'op' wants to apply an object, but can't because of other equipment.
 * This should only be called when it is known
 * that there are objects to unapply.  This makes pretty heavy
 * use of get_item_from_body_location.  It makes no intelligent choice
 * on objects - rather, the first that is matched is used.
 * Returns 0 on success, returns 1 if there is some problem.
 * if aflags is AP_PRINT, we instead print out waht to unapply
 * instead of doing it.  This is a lot less code than having
 * another function that does just that.
 */
int
unapply_for_ob (object *who, object *op, int aflags)
{
  int i;
  object *tmp = NULL, *last;

  /* If we are applying a shield or weapon, unapply any equipped shield
   * or weapons first - only allowed to use one weapon/shield at a time.
   */
  if (op->type == WEAPON || op->type == SHIELD)
    {
      for (tmp = who->inv; tmp; tmp = tmp->below)
        {
          if (QUERY_FLAG (tmp, FLAG_APPLIED) && tmp->type == op->type)
            {
              if ((aflags & AP_IGNORE_CURSE) || (aflags & AP_PRINT) || (!QUERY_FLAG (tmp, FLAG_CURSED) && !QUERY_FLAG (tmp, FLAG_DAMNED)))
                {
                  if (aflags & AP_PRINT)
                    new_draw_info (NDI_UNIQUE, 0, who, query_name (tmp));
                  else
                    unapply_special (who, tmp, aflags);
                }
              else
                {
                  /* In this case, we want to try and remove a cursed item.
                   * While we know it won't work, we want unapply_special to
                   * at least generate the message.
                   */
                  new_draw_info_format (NDI_UNIQUE, 0, who, "No matter how hard you try, you just can't\nremove %s.", query_name (tmp));
                  return 1;
                }

            }
        }
    }

  for (i = 0; i < NUM_BODY_LOCATIONS; i++)
    {
      /* this used up a slot that we need to free */
      if (op->body_info[i])
        {
          last = who->inv;

          /* We do a while loop - may need to remove several items in order
           * to free up enough slots.
           */
          while ((who->body_used[i] + op->body_info[i]) < 0)
            {
              tmp = get_item_from_body_location (last, i);
              if (!tmp)
                {
#if 0
                  /* Not a bug - we'll get this if the player has cursed items
                   * equipped.
                   */
                  LOG (llevError, "Can't find object using location %d (%s) on %s\n", i, body_locations[i].save_name, who->name);
#endif
                  return 1;
                }
              /* If we are just printing, we don't care about cursed status */
              if ((aflags & AP_IGNORE_CURSE) || (aflags & AP_PRINT) || (!(QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))))
                {
                  if (aflags & AP_PRINT)
                    new_draw_info (NDI_UNIQUE, 0, who, query_name (tmp));
                  else
                    unapply_special (who, tmp, aflags);
                }
              else
                {
                  /* Cursed item that we can't unequip - tell the player.
                   * Note this could be annoying if this is just one of a few,
                   * so it may not be critical (eg, putting on a ring and you have
                   * one cursed ring.)
                   */
                  new_draw_info_format (NDI_UNIQUE, 0, who, "The %s just won't come off", query_name (tmp));
                }
              last = tmp->below;
            }
          /* if we got here, this slot is freed up - otherwise, if it wasn't freed up, the
           * return in the !tmp would have kicked in.
           */
        }                       /* if op is using this body location */
    }                           /* for body lcoations */
  return 0;
}

/**
 * Checks to see if 'who' can apply object 'op'.
 * Returns 0 if apply can be done without anything special.
 * Otherwise returns a bitmask - potentially several of these may be
 * set, but largely depends on circumstance - in the future, processing
 * may be  pruned once we know some status (eg, once CAN_APPLY_NEVER
 * is set, do we really are what the other flags may be?)
 *
 * See include/define.h for detailed description of the meaning of
 * these return values.
 */
int
can_apply_object (object *who, object *op)
{
  if (INVOKE_OBJECT (CAN_BE_APPLIED, op, ARG_OBJECT (who)) || INVOKE_OBJECT (CAN_APPLY, who, ARG_OBJECT (op)))
    return RESULT_INT (0);

  int i, retval = 0;
  object *tmp = NULL, *ws = NULL;

  /* Players have 2 'arm's, so they could in theory equip 2 shields or
   * 2 weapons, but we don't want to let them do that.  So if they are
   * trying to equip a weapon or shield, see if they already have one
   * in place and store that way.
   */
  if (op->type == WEAPON || op->type == SHIELD)
    {
      for (tmp = who->inv; tmp && !ws; tmp = tmp->below)
        {
          if (QUERY_FLAG (tmp, FLAG_APPLIED) && tmp->type == op->type)
            {
              retval = CAN_APPLY_UNAPPLY;
              ws = tmp;
            }
        }
    }


  for (i = 0; i < NUM_BODY_LOCATIONS; i++)
    {
      if (op->body_info[i])
        {
          /* Item uses more slots than we have */
          if (FABS (op->body_info[i]) > who->body_info[i])
            {
              /* Could return now for efficiently - rest of info below isn'
               * really needed.
               */
              retval |= CAN_APPLY_NEVER;
            }
          else if ((who->body_used[i] + op->body_info[i]) < 0)
            {
              /* in this case, equipping this would use more free spots than
               * we have.
               */
              object *tmp1;


              /* if we have an applied weapon/shield, and unapply it would free
               * enough slots to equip the new item, then just set this can
               * continue.  We don't care about the logic below - if you have
               * shield equipped and try to equip another shield, there is only
               * one choice.  However, the check for the number of body locations 
               * does take into the account cases where what is being applied
               * may be two handed for example.
               */
              if (ws)
                {
                  if ((who->body_used[i] - ws->body_info[i] + op->body_info[i]) >= 0)
                    {
                      retval |= CAN_APPLY_UNAPPLY;
                      continue;
                    }
                }

              tmp1 = get_item_from_body_location (who->inv, i);
              if (!tmp1)
                {
#if 0
                  /* This is sort of an error, but happens a lot when old players
                   * join in with more stuff equipped than they are now allowed.
                   */
                  LOG (llevError, "Can't find object using location %d on %s\n", i, who->name);
#endif
                  retval |= CAN_APPLY_NEVER;
                }
              else
                {
                  /* need to unapply something.  However, if this something
                   * is different than we had found before, it means they need
                   * to apply multiple objects
                   */
                  retval |= CAN_APPLY_UNAPPLY;
                  if (!tmp)
                    tmp = tmp1;
                  else if (tmp != tmp1)
                    {
                      retval |= CAN_APPLY_UNAPPLY_MULT;
                    }
                  /* This object isn't using up all the slots, so there must
                   * be another.  If so, and it the new item doesn't need all
                   * the slots, the player then has a choice.  
                   */
                  if (((who->body_used[i] - tmp1->body_info[i]) != who->body_info[i]) && (FABS (op->body_info[i]) < who->body_info[i]))
                    retval |= CAN_APPLY_UNAPPLY_CHOICE;

                  /* Does unequippint 'tmp1' free up enough slots for this to be
                   * equipped?  If not, there must be something else to unapply.
                   */
                  if ((who->body_used[i] + op->body_info[i] - tmp1->body_info[i]) < 0)
                    retval |= CAN_APPLY_UNAPPLY_MULT;

                }
            }                   /* if not enough free slots */
        }                       /* if this object uses location i */
    }                           /* for i -> num_body_locations loop */

  /* Note that we don't check for FLAG_USE_ARMOUR - that should
   * really be controlled by use of body locations.  We do have
   * the weapon/shield checks, and the range checks for monsters,
   * because you can't control those just by body location - bows, shields,
   * and weapons all use the same slot.  Similar for horn/rod/wand - they
   * all use the same location.
   */
  if (op->type == WEAPON && !QUERY_FLAG (who, FLAG_USE_WEAPON))
    retval |= CAN_APPLY_RESTRICTION;
  if (op->type == SHIELD && !QUERY_FLAG (who, FLAG_USE_SHIELD))
    retval |= CAN_APPLY_RESTRICTION;


  if (who->type != PLAYER)
    {
      if ((op->type == WAND || op->type == HORN || op->type == ROD) && !QUERY_FLAG (who, FLAG_USE_RANGE))
        retval |= CAN_APPLY_RESTRICTION;
      if (op->type == BOW && !QUERY_FLAG (who, FLAG_USE_BOW))
        retval |= CAN_APPLY_RESTRICTION;
      if (op->type == RING && !QUERY_FLAG (who, FLAG_USE_RING))
        retval |= CAN_APPLY_RESTRICTION;
      if (op->type == BOW && !QUERY_FLAG (who, FLAG_USE_BOW))
        retval |= CAN_APPLY_RESTRICTION;
    }
  return retval;
}


/**
 * who is the object using the object.  It can be a monster.
 * op is the object they are using.  op is an equipment type item,
 * eg, one which you put on and keep on for a while, and not something
 * like a potion or scroll.
 *
 * function returns 1 if the action could not be completed, 0 on
 * success.  However, success is a matter of meaning - if the
 * user passes the 'apply' flag to an object already applied,
 * nothing is done, and 0 is returned.
 *
 * aflags is special flags (0 - normal/toggle, AP_APPLY=always apply,
 * AP_UNAPPLY=always unapply).
 *
 * Optional flags:
 *   AP_NO_MERGE: don't merge an unapplied object with other objects
 *   AP_IGNORE_CURSE: unapply cursed items
 *
 * Usage example:  apply_special (who, op, AP_UNAPPLY | AP_IGNORE_CURSE)
 *
 * apply_special() doesn't check for unpaid items.
 */
int
apply_special (object *who, object *op, int aflags)
{
  int basic_flag = aflags & AP_BASIC_FLAGS;
  object *tmp, *tmp2, *skop = NULL;
  int i;

  if (who == NULL)
    {
      LOG (llevError, "apply_special() from object without environment.\n");
      return 1;
    }

  if (op->env != who)
    return 1;                   /* op is not in inventory */

  /* trying to unequip op */
  if (QUERY_FLAG (op, FLAG_APPLIED))
    {
      /* always apply, so no reason to unapply */
      if (basic_flag == AP_APPLY)
        return 0;

      if (!(aflags & AP_IGNORE_CURSE) && (QUERY_FLAG (op, FLAG_CURSED) || QUERY_FLAG (op, FLAG_DAMNED)))
        {
          new_draw_info_format (NDI_UNIQUE, 0, who, "No matter how hard you try, you just can't\nremove %s.", query_name (op));
          return 1;
        }
      return unapply_special (who, op, aflags);
    }

  if (basic_flag == AP_UNAPPLY)
    return 0;

  i = can_apply_object (who, op);

  /* Can't just apply this object.  Lets see what not and what to do */
  if (i)
    {
      if (i & CAN_APPLY_NEVER)
        {
          new_draw_info_format (NDI_UNIQUE, 0, who, "You don't have the body to use a %s\n", query_name (op));
          return 1;
        }
      else if (i & CAN_APPLY_RESTRICTION)
        {
          new_draw_info_format (NDI_UNIQUE, 0, who, "You have a prohibition against using a %s\n", query_name (op));
          return 1;
        }
      if (who->type != PLAYER)
        {
          /* Some error, so don't try to equip something more */
          if (unapply_for_ob (who, op, aflags))
            return 1;
        }
      else
        {
          if (who->contr->unapply == unapply_never || (i & CAN_APPLY_UNAPPLY_CHOICE && who->contr->unapply == unapply_nochoice))
            {
              new_draw_info (NDI_UNIQUE, 0, who, "You need to unapply some item(s):");
              unapply_for_ob (who, op, AP_PRINT);
              return 1;
            }
          else if (who->contr->unapply == unapply_always || !(i & CAN_APPLY_UNAPPLY_CHOICE))
            {
              i = unapply_for_ob (who, op, aflags);
              if (i)
                return 1;
            }
        }
    }
  if (op->skill && op->type != SKILL && op->type != SKILL_TOOL)
    {
      skop = find_skill_by_name (who, op->skill);
      if (!skop)
        {
          new_draw_info_format (NDI_UNIQUE, 0, who, "You need the %s skill to use this item!", &op->skill);
          return 1;
        }
      else
        {
          /* While experience will be credited properly, we want to change the
           * skill so that the dam and wc get updated 
           */
          change_skill (who, skop, 0);
        }
    }

  if (who->type == PLAYER && op->item_power && (op->item_power + who->contr->item_power) > (settings.item_power_factor * who->level))
    {
      new_draw_info (NDI_UNIQUE, 0, who, "Equipping that combined with other items would consume your soul!");
      return 1;
    }


  /* Ok.  We are now at the state where we can apply the new object.
   * Note that we don't have the checks for can_use_...
   * below - that is already taken care of by can_apply_object. 
   */


  if (op->nrof > 1)
    tmp = get_split_ob (op, op->nrof - 1);
  else
    tmp = NULL;

  if (INVOKE_OBJECT (BE_READY, op, ARG_OBJECT (who)) || INVOKE_OBJECT (READY, who, ARG_OBJECT (op)))
    return RESULT_INT (0);

  switch (op->type)
    {
      case WEAPON:
        if (!check_weapon_power (who, op->last_eat))
          {
            new_draw_info (NDI_UNIQUE, 0, who, "That weapon is too powerful for you to use.");
            new_draw_info (NDI_UNIQUE, 0, who, "It would consume your soul!.");
            if (tmp != NULL)
              (void) insert_ob_in_ob (tmp, who);
            return 1;
          }
        if (op->level && (strncmp (op->name, who->name, strlen (who->name))))
          {
            /* if the weapon does not have the name as the character, can't use it. */
            /* (Ragnarok's sword attempted to be used by Foo: won't work) */
            new_draw_info (NDI_UNIQUE, 0, who, "The weapon does not recognize you as its owner.");
            if (tmp != NULL)
              (void) insert_ob_in_ob (tmp, who);
            return 1;
          }
        SET_FLAG (op, FLAG_APPLIED);

        if (skop)
          change_skill (who, skop, 1);
        if (!QUERY_FLAG (who, FLAG_READY_WEAPON))
          SET_FLAG (who, FLAG_READY_WEAPON);

        new_draw_info_format (NDI_UNIQUE, 0, who, "You wield %s.", query_name (op));

        (void) change_abil (who, op);
        break;

      case ARMOUR:
      case HELMET:
      case SHIELD:
      case BOOTS:
      case GLOVES:
      case GIRDLE:
      case BRACERS:
      case CLOAK:
      case RING:
      case AMULET:
        SET_FLAG (op, FLAG_APPLIED);
        new_draw_info_format (NDI_UNIQUE, 0, who, "You wear %s.", query_name (op));
        (void) change_abil (who, op);
        break;
      case LAMP:
        if (op->stats.food < 1)
          {
            new_draw_info_format (NDI_UNIQUE, 0, who, "Your %s is out of" " fuel!", &op->name);
            return 1;
          }
        new_draw_info_format (NDI_UNIQUE, 0, who, "You turn on your %s.", &op->name);
        tmp2 = arch_to_object (op->other_arch);
        tmp2->stats.food = op->stats.food;
        SET_FLAG (tmp2, FLAG_APPLIED);
        if (QUERY_FLAG (op, FLAG_INV_LOCKED))
          SET_FLAG (tmp2, FLAG_INV_LOCKED);
        insert_ob_in_ob (tmp2, who);

        /* Remove the old lantern */
        if (who->type == PLAYER)
          esrv_del_item (who->contr, op->count);

        remove_ob (op);
        free_object (op);

        /* insert the portion that was split off */
        if (tmp != NULL)
          {
            (void) insert_ob_in_ob (tmp, who);
            if (who->type == PLAYER)
              esrv_send_item (who, tmp);
          }
        fix_player (who);
        if (QUERY_FLAG (op, FLAG_CURSED) || QUERY_FLAG (op, FLAG_DAMNED))
          {
            if (who->type == PLAYER)
              {
                new_draw_info (NDI_UNIQUE, 0, who, "Oops, it feels deadly cold!");
                SET_FLAG (tmp2, FLAG_KNOWN_CURSED);
              }
          }
        if (who->type == PLAYER)
          esrv_send_item (who, tmp2);
        return 0;
        break;

        /* this part is needed for skill-tools */
      case SKILL:
      case SKILL_TOOL:
        if (who->chosen_skill)
          {
            LOG (llevError, "BUG: apply_special(): can't apply two skills\n");
            return 1;
          }
        if (who->type == PLAYER)
          {
            who->contr->shoottype = range_skill;
            who->contr->ranges[range_skill] = op;
            if (!op->invisible)
              {
                new_draw_info_format (NDI_UNIQUE, 0, who, "You ready %s.", query_name (op));
                new_draw_info_format (NDI_UNIQUE, 0, who, "You can now use the skill: %s.", &op->skill);
              }
            else
              {
                new_draw_info_format (NDI_UNIQUE, 0, who, "Readied skill: %s.", op->skill ? &op->skill : &op->name);
              }
          }
        SET_FLAG (op, FLAG_APPLIED);
        (void) change_abil (who, op);
        who->chosen_skill = op;
        SET_FLAG (who, FLAG_READY_SKILL);
        break;

      case BOW:
        if (!check_weapon_power (who, op->last_eat))
          {
            new_draw_info (NDI_UNIQUE, 0, who, "That item is too powerful for you to use.");
            new_draw_info (NDI_UNIQUE, 0, who, "It would consume your soul!.");
            if (tmp != NULL)
              (void) insert_ob_in_ob (tmp, who);
            return 1;
          }
        if (op->level && (strncmp (op->name, who->name, strlen (who->name))))
          {
            new_draw_info (NDI_UNIQUE, 0, who, "The weapon does not recognize you as its owner.");
            if (tmp != NULL)
              (void) insert_ob_in_ob (tmp, who);
            return 1;
          }
       /*FALLTHROUGH*/ case WAND:
      case ROD:
      case HORN:
        /* check for skill, alter player status */
        SET_FLAG (op, FLAG_APPLIED);
        if (skop)
          change_skill (who, skop, 0);
        new_draw_info_format (NDI_UNIQUE, 0, who, "You ready %s.", query_name (op));

        if (who->type == PLAYER)
          {
            if (op->type == BOW)
              {
                (void) change_abil (who, op);
                new_draw_info_format (NDI_UNIQUE, 0, who,
                                      "You will now fire %s with %s.", op->race ? &op->race : "nothing", query_name (op));
                who->contr->shoottype = range_bow;
              }
            else
              {
                who->contr->shoottype = range_misc;
              }
          }
        else
          {
            if (op->type == BOW)
              SET_FLAG (who, FLAG_READY_BOW);
            else
              SET_FLAG (who, FLAG_READY_RANGE);
          }
        break;

      case BUILDER:
        if (who->contr->ranges[range_builder])
          unapply_special (who, who->contr->ranges[range_builder], 0);
        who->contr->shoottype = range_builder;
        who->contr->ranges[range_builder] = op;
        new_draw_info_format (NDI_UNIQUE, 0, who, "You ready your %s.", query_name (op));
        break;

      default:
        new_draw_info_format (NDI_UNIQUE, 0, who, "You apply %s.", query_name (op));
    }                           /* end of switch op->type */

  SET_FLAG (op, FLAG_APPLIED);

  if (tmp != NULL)
    tmp = insert_ob_in_ob (tmp, who);

  fix_player (who);

  /* We exclude spell casting objects.  The fire code will set the
   * been applied flag when they are used - until that point,
   * you don't know anything about them.
   */
  if (who->type == PLAYER && op->type != WAND && op->type != HORN && op->type != ROD)
    SET_FLAG (op, FLAG_BEEN_APPLIED);

  if (QUERY_FLAG (op, FLAG_CURSED) || QUERY_FLAG (op, FLAG_DAMNED))
    {
      if (who->type == PLAYER)
        {
          new_draw_info (NDI_UNIQUE, 0, who, "Oops, it feels deadly cold!");
          SET_FLAG (op, FLAG_KNOWN_CURSED);
        }
    }
  if (who->type == PLAYER)
    {
      /* if multiple objects were applied, update both slots */
      if (tmp)
        esrv_send_item (who, tmp);
      esrv_send_item (who, op);
    }
  return 0;
}


int
monster_apply_special (object *who, object *op, int aflags)
{
  if (QUERY_FLAG (op, FLAG_UNPAID) && !QUERY_FLAG (op, FLAG_APPLIED))
    return 1;
  return apply_special (who, op, aflags);
}

/**
 * Map was just loaded, handle op's initialisation.
 *
 * Generates shop floor's item, and treasures.
 */
int
auto_apply (object *op)
{
  object *tmp = NULL, *tmp2;
  int i;

  switch (op->type)
    {
      case SHOP_FLOOR:
        if (!HAS_RANDOM_ITEMS (op))
          return 0;
        do
          {
            i = 10;             /* let's give it 10 tries */
            while ((tmp = generate_treasure (op->randomitems,
                                             op->stats.exp ? (int) op->stats.exp : MAX (op->map->difficulty, 5))) == NULL && --i);
            if (tmp == NULL)
              return 0;
            if (QUERY_FLAG (tmp, FLAG_CURSED) || QUERY_FLAG (tmp, FLAG_DAMNED))
              {
                free_object (tmp);
                tmp = NULL;
              }
          }
        while (!tmp);
        tmp->x = op->x;
        tmp->y = op->y;
        SET_FLAG (tmp, FLAG_UNPAID);
        insert_ob_in_map (tmp, op->map, NULL, 0);
        CLEAR_FLAG (op, FLAG_AUTO_APPLY);
        identify (tmp);
        break;

      case TREASURE:
        if (QUERY_FLAG (op, FLAG_IS_A_TEMPLATE))
          return 0;
        while ((op->stats.hp--) > 0)
          create_treasure (op->randomitems, op, op->map ? GT_ENVIRONMENT : 0,
                           op->stats.exp ? (int) op->stats.exp : op->map == NULL ? 14 : op->map->difficulty, 0);

        /* If we generated an object and put it in this object inventory,
         * move it to the parent object as the current object is about
         * to disappear.  An example of this item is the random_* stuff
         * that is put inside other objects.
         */
        for (tmp = op->inv; tmp; tmp = tmp2)
          {
            tmp2 = tmp->below;
            remove_ob (tmp);
            if (op->env)
              insert_ob_in_ob (tmp, op->env);
            else
              free_object (tmp);
          }
        remove_ob (op);
        free_object (op);
        break;
    }
  return tmp ? 1 : 0;
}

/**
 * fix_auto_apply goes through the entire map (only the first time
 * when an original map is loaded) and performs special actions for
 * certain objects (most initialization of chests and creation of
 * treasures and stuff).  Calls auto_apply if appropriate.
 */
void
fix_auto_apply (mapstruct *m)
{
  object *tmp, *above = NULL;
  int x, y;

  if (m == NULL)
    return;

  for (x = 0; x < MAP_WIDTH (m); x++)
    for (y = 0; y < MAP_HEIGHT (m); y++)
      for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = above)
        {
          above = tmp->above;

          if (tmp->inv)
            {
              object *invtmp, *invnext;

              for (invtmp = tmp->inv; invtmp != NULL; invtmp = invnext)
                {
                  invnext = invtmp->below;

                  if (QUERY_FLAG (invtmp, FLAG_AUTO_APPLY))
                    auto_apply (invtmp);
                  else if (invtmp->type == TREASURE && HAS_RANDOM_ITEMS (invtmp))
                    {
                      while ((invtmp->stats.hp--) > 0)
                        create_treasure (invtmp->randomitems, invtmp, 0, m->difficulty, 0);

                      invtmp->randomitems = NULL;
                    }
                  else if (invtmp && invtmp->arch
                           && invtmp->type != TREASURE && invtmp->type != SPELL && invtmp->type != CLASS && HAS_RANDOM_ITEMS (invtmp))
                    {
                      create_treasure (invtmp->randomitems, invtmp, 0, m->difficulty, 0);
                      /* Need to clear this so that we never try to create 
                       * treasure again for this object
                       */
                      invtmp->randomitems = NULL;
                    }
                }
              /* This is really temporary - the code at the bottom will
               * also set randomitems to null.  The problem is there are bunches
               * of maps/players already out there with items that have spells
               * which haven't had the randomitems set to null yet.
               * MSW 2004-05-13
               *
               * And if it's a spellbook, it's better to set randomitems to NULL too,
               * else you get two spells in the book ^_-
               * Ryo 2004-08-16
               */
              if (tmp->type == WAND || tmp->type == ROD || tmp->type == SCROLL
                  || tmp->type == HORN || tmp->type == FIREWALL || tmp->type == POTION || tmp->type == ALTAR || tmp->type == SPELLBOOK)
                tmp->randomitems = NULL;

            }

          if (QUERY_FLAG (tmp, FLAG_AUTO_APPLY))
            auto_apply (tmp);
          else if ((tmp->type == TREASURE || (tmp->type == CONTAINER)) && HAS_RANDOM_ITEMS (tmp))
            {
              while ((tmp->stats.hp--) > 0)
                create_treasure (tmp->randomitems, tmp, 0, m->difficulty, 0);
              tmp->randomitems = NULL;
            }
          else if (tmp->type == TIMED_GATE)
            {
              object *head = tmp->head != NULL ? tmp->head : tmp;

              if (QUERY_FLAG (head, FLAG_IS_LINKED))
                {
                  tmp->speed = 0;
                  update_ob_speed (tmp);
                }
            }
          /* This function can be called everytime a map is loaded, even when
           * swapping back in.  As such, we don't want to create the treasure
           * over and ove again, so after we generate the treasure, blank out
           * randomitems so if it is swapped in again, it won't make anything.
           * This is a problem for the above objects, because they have counters
           * which say how many times to make the treasure.
           */
          else if (tmp && tmp->arch && tmp->type != PLAYER
                   && tmp->type != TREASURE && tmp->type != SPELL
                   && tmp->type != PLAYER_CHANGER && tmp->type != CLASS && HAS_RANDOM_ITEMS (tmp))
            {
              create_treasure (tmp->randomitems, tmp, GT_APPLY, m->difficulty, 0);
              tmp->randomitems = NULL;
            }
        }

  for (x = 0; x < MAP_WIDTH (m); x++)
    for (y = 0; y < MAP_HEIGHT (m); y++)
      for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
        if (tmp->above && (tmp->type == TRIGGER_BUTTON || tmp->type == TRIGGER_PEDESTAL))
          check_trigger (tmp, tmp->above);
}

/**
 * Handles player eating food that temporarily changes status (resistances, stats).
 * This used to call cast_change_attr(), but
 * that doesn't work with the new spell code.  Since we know what
 * the food changes, just grab a force and use that instead.
 */

void
eat_special_food (object *who, object *food)
{
  object *force;
  int i, did_one = 0;
  sint8 k;

  force = get_archetype (FORCE_NAME);

  for (i = 0; i < NUM_STATS; i++)
    {
      k = get_attr_value (&food->stats, i);
      if (k)
        {
          set_attr_value (&force->stats, i, k);
          did_one = 1;
        }
    }

  /* check if we can protect the eater */
  for (i = 0; i < NROFATTACKS; i++)
    {
      if (food->resist[i] > 0)
        {
          force->resist[i] = food->resist[i] / 2;
          did_one = 1;
        }
    }
  if (did_one)
    {
      force->speed = 0.1;
      update_ob_speed (force);
      /* bigger morsel of food = longer effect time */
      force->stats.food = food->stats.food / 5;
      SET_FLAG (force, FLAG_IS_USED_UP);
      SET_FLAG (force, FLAG_APPLIED);
      change_abil (who, force);
      insert_ob_in_ob (force, who);
    }
  else
    {
      free_object (force);
    }

  /* check for hp, sp change */
  if (food->stats.hp != 0)
    {
      if (QUERY_FLAG (food, FLAG_CURSED))
        {
          strcpy (who->contr->killer, food->name);
          hit_player (who, food->stats.hp, food, AT_POISON, 1);
          new_draw_info (NDI_UNIQUE, 0, who, "Eck!...that was poisonous!");
        }
      else
        {
          if (food->stats.hp > 0)
            new_draw_info (NDI_UNIQUE, 0, who, "You begin to feel better.");
          else
            new_draw_info (NDI_UNIQUE, 0, who, "Eck!...that was poisonous!");
          who->stats.hp += food->stats.hp;
        }
    }
  if (food->stats.sp != 0)
    {
      if (QUERY_FLAG (food, FLAG_CURSED))
        {
          new_draw_info (NDI_UNIQUE, 0, who, "You are drained of mana!");
          who->stats.sp -= food->stats.sp;
          if (who->stats.sp < 0)
            who->stats.sp = 0;
        }
      else
        {
          new_draw_info (NDI_UNIQUE, 0, who, "You feel a rush of magical energy!");
          who->stats.sp += food->stats.sp;
          /* place limit on max sp from food? */
        }
    }
  fix_player (who);
}


/**
 * Designed primarily to light torches/lanterns/etc.
 * Also burns up burnable material too. First object in the inventory is
 * the selected object to "burn". -b.t.
 */

void
apply_lighter (object *who, object *lighter)
{
  object *item;
  int is_player_env = 0;
  char item_name[MAX_BUF];

  item = find_marked_object (who);
  if (item)
    {
      if (lighter->last_eat && lighter->stats.food)
        {                       /* lighter gets used up */
          /* Split multiple lighters if they're being used up.  Otherwise *
           * one charge from each would be used up.  --DAMN               */
          if (lighter->nrof > 1)
            {
              object *oneLighter = get_object ();

              copy_object (lighter, oneLighter);
              lighter->nrof -= 1;
              oneLighter->nrof = 1;
              oneLighter->stats.food--;
              esrv_send_item (who, lighter);
              oneLighter = insert_ob_in_ob (oneLighter, who);
              esrv_send_item (who, oneLighter);
            }
          else
            lighter->stats.food--;
        }
      else if (lighter->last_eat)
        {                       /* no charges left in lighter */
          new_draw_info_format (NDI_UNIQUE, 0, who, "You attempt to light the %s with a used up %s.", &item->name, &lighter->name);
          return;
        }
      /* Perhaps we should split what we are trying to light on fire?
       * I can't see many times when you would want to light multiple
       * objects at once.
       */
      /* If the item is destroyed, we don't have a valid pointer to the
       * name object, so make a copy so the message we print out makes
       * some sense.
       */
      strcpy (item_name, item->name);
      if (who == is_player_inv (item))
        is_player_env = 1;

      save_throw_object (item, AT_FIRE, who);
      /* Change to check count and not freed, since the object pointer
       * may have gotten recycled
       */
      if (item->destroyed ())
        {
          new_draw_info_format (NDI_UNIQUE, 0, who, "You light the %s with the %s.", &item_name, &lighter->name);
          /* Need to update the player so that the players glow radius
           * gets changed.
           */
          if (is_player_env)
            fix_player (who);
        }
      else
        new_draw_info_format (NDI_UNIQUE, 0, who, "You attempt to light the %s with the %s and fail.", &item->name, &lighter->name);
    }
  else                          /* nothing to light */
    new_draw_info (NDI_UNIQUE, 0, who, "You need to mark a lightable object.");

}

/**
 * op made some mistake with a scroll, this takes care of punishment.
 * scroll_failure()- hacked directly from spell_failure
 */
void
scroll_failure (object *op, int failure, int power)
{
  if (abs (failure / 4) > power)
    power = abs (failure / 4);  /* set minimum effect */

  if (failure <= -1 && failure > -15)
    {                           /* wonder */
      object *tmp;

      new_draw_info (NDI_UNIQUE, 0, op, "Your spell warps!.");
      tmp = get_archetype (SPELL_WONDER);
      cast_wonder (op, op, 0, tmp);
      free_object (tmp);
    }
  else if (failure <= -15 && failure > -35)
    {                           /* drain mana */
      new_draw_info (NDI_UNIQUE, 0, op, "Your mana is drained!.");
      op->stats.sp -= random_roll (0, power - 1, op, PREFER_LOW);
      if (op->stats.sp < 0)
        op->stats.sp = 0;
    }
  else if (settings.spell_failure_effects == TRUE)
    {
      if (failure <= -35 && failure > -60)
        {                       /* confusion */
          new_draw_info (NDI_UNIQUE, 0, op, "The magic recoils on you!");
          confuse_player (op, op, power);
        }
      else if (failure <= -60 && failure > -70)
        {                       /* paralysis */
          new_draw_info (NDI_UNIQUE, 0, op, "The magic recoils and paralyzes " "you!");
          paralyze_player (op, op, power);
        }
      else if (failure <= -70 && failure > -80)
        {                       /* blind */
          new_draw_info (NDI_UNIQUE, 0, op, "The magic recoils on you!");
          blind_player (op, op, power);
        }
      else if (failure <= -80)
        {                       /* blast the immediate area */
          object *tmp;

          tmp = get_archetype (LOOSE_MANA);
          cast_magic_storm (op, tmp, power);
          new_draw_info (NDI_UNIQUE, 0, op, "You unlease uncontrolled mana!");
          free_object (tmp);
        }
    }
}

void
apply_changes_to_player (object *pl, object *change)
{
  int excess_stat = 0;          /* if the stat goes over the maximum
                                   for the race, put the excess stat some
                                   where else. */

  switch (change->type)
    {
      case CLASS:
        {
          living *stats = &(pl->contr->orig_stats);
          living *ns = &(change->stats);
          object *walk;
          int flag_change_face = 1;

          /* the following code assigns stats up to the stat max
           * for the race, and if the stat max is exceeded,
           * tries to randomly reassign the excess stat
           */
          int i, j;

          for (i = 0; i < NUM_STATS; i++)
            {
              sint8 stat = get_attr_value (stats, i);
              int race_bonus = get_attr_value (&(pl->arch->clone.stats), i);

              stat += get_attr_value (ns, i);
              if (stat > 20 + race_bonus)
                {
                  excess_stat++;
                  stat = 20 + race_bonus;
                }
              set_attr_value (stats, i, stat);
            }

          for (j = 0; excess_stat > 0 && j < 100; j++)
            {                   /* try 100 times to assign excess stats */
              int i = rndm (0, 6);
              int stat = get_attr_value (stats, i);
              int race_bonus = get_attr_value (&(pl->arch->clone.stats), i);

              if (i == CHA)
                continue;       /* exclude cha from this */
              if (stat < 20 + race_bonus)
                {
                  change_attr_value (stats, i, 1);
                  excess_stat--;
                }
            }

          /* insert the randomitems from the change's treasurelist into
           * the player ref: player.c
           */
          if (change->randomitems != NULL)
            give_initial_items (pl, change->randomitems);


          /* set up the face, for some races. */

          /* first, look for the force object banning
           * changing the face.  Certain races never change face with class.
           */
          for (walk = pl->inv; walk != NULL; walk = walk->below)
            if (!strcmp (walk->name, "NOCLASSFACECHANGE"))
              flag_change_face = 0;

          if (flag_change_face)
            {
              pl->animation_id = GET_ANIM_ID (change);
              pl->face = change->face;

              if (QUERY_FLAG (change, FLAG_ANIMATE))
                SET_FLAG (pl, FLAG_ANIMATE);
              else
                CLEAR_FLAG (pl, FLAG_ANIMATE);
            }

          /* check the special case of can't use weapons */
          /*if(QUERY_FLAG(change,FLAG_USE_WEAPON)) CLEAR_FLAG(pl,FLAG_USE_WEAPON); */
          if (!strcmp (change->name, "monk"))
            CLEAR_FLAG (pl, FLAG_USE_WEAPON);

          break;
        }
    }
}

/**
 * This handles items of type 'transformer'.
 * Basically those items, used with a marked item, transform both items into something
 * else.
 * "Transformer" item has food decreased by 1, removed if 0 (0 at start means illimited)..
 * Change information is contained in the 'slaying' field of the marked item.
 * The format is as follow: transformer:[number ]yield[;transformer:...].
 * This way an item can be transformed in many things, and/or many objects.
 * The 'slaying' field for transformer is used as verb for the action.
 */
void
apply_item_transformer (object *pl, object *transformer)
{
  object *marked;
  object *new_item;
  char *find;
  char *separator;
  int yield;
  char got[MAX_BUF];
  int len;

  if (!pl || !transformer)
    return;
  marked = find_marked_object (pl);
  if (!marked)
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "Use the %s with what item?", query_name (transformer));
      return;
    }
  if (!marked->slaying)
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "You can't use the %s with your %s!", query_name (transformer), query_name (marked));
      return;
    }
  /* check whether they are compatible or not */
  find = strstr (marked->slaying, transformer->arch->name);
  if (!find || (*(find + strlen (transformer->arch->name)) != ':'))
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "You can't use the %s with your %s!", query_name (transformer), query_name (marked));
      return;
    }
  find += strlen (transformer->arch->name) + 1;
  /* Item can be used, now find how many and what it yields */
  if (isdigit (*(find)))
    {
      yield = atoi (find);
      if (yield < 1)
        {
          LOG (llevDebug, "apply_item_transformer: item %s has slaying-yield %d.", query_base_name (marked, 0), yield);
          yield = 1;
        }
    }
  else
    yield = 1;

  while (isdigit (*find))
    find++;
  while (*find == ' ')
    find++;
  memset (got, 0, MAX_BUF);
  if ((separator = strchr (find, ';')) != NULL)
    {
      len = separator - find;
    }
  else
    {
      len = strlen (find);
    }
  if (len > MAX_BUF - 1)
    len = MAX_BUF - 1;
  strcpy (got, find);
  got[len] = '\0';

  /* Now create new item, remove used ones when required. */
  new_item = get_archetype (got);
  if (!new_item)
    {
      new_draw_info_format (NDI_UNIQUE, 0, pl, "This %s is strange, better to not use it.", query_base_name (marked, 0));
      return;
    }

  new_item->nrof = yield;
  new_draw_info_format (NDI_UNIQUE, 0, pl, "You %s the %s.", &transformer->slaying, query_base_name (marked, 0));
  insert_ob_in_ob (new_item, pl);
  esrv_send_inventory (pl, pl);
  /* Eat up one item */
  decrease_ob_nr (marked, 1);
  /* Eat one transformer if needed */
  if (transformer->stats.food)
    if (--transformer->stats.food == 0)
      decrease_ob_nr (transformer, 1);
}
Revision:	1.29
Committed:	Thu Sep 14 23:13:49 2006 UTC (17 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.28:	+14 -21 lines
Log Message:	replace was_destroyed by much simpler and less expensive ->destroyed, which is valid, as objetc pointers are now reliable.