server/server/c_wiz.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2002 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992 Frank Tore Johansen
 *
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 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 Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

#include <global.h>
#include <sproto.h>
#include <spells.h>
#include <treasure.h>
#include <skills.h>

/** Defines for DM item stack **/
#define STACK_SIZE         50   /* Stack size, static */

/* Values for 'from' field of get_dm_object */
#define STACK_FROM_NONE     0   /* Item was not found */
#define STACK_FROM_TOP      1   /* Item is stack top */
#define STACK_FROM_STACK    2   /* Item is somewhere in stack */
#define STACK_FROM_NUMBER   3   /* Item is a number (may be top) */

/**
 * Enough of the DM functions seem to need this that I broke
 * it out to a seperate function.  name is the person
 * being saught, rq is who is looking for them.  This
 * prints diagnostics messages, and returns the
 * other player, or NULL otherwise.
 */
static player *
get_other_player_from_name (object *op, char *name)
{
  if (!name)
    return NULL;

  for_all_players (pl)
    if (!strncmp (pl->ob->name, name, MAX_NAME))
      {
        if (pl->ob == op)
          {
            new_draw_info (NDI_UNIQUE, 0, op, "You can't do that to yourself.");
            return NULL;
          }

        if (pl->ns->state != ST_PLAYING)
          {
            new_draw_info (NDI_UNIQUE, 0, op, "That player is in no state for that right now.");
            return NULL;
          }

        return pl;
      }

  new_draw_info (NDI_UNIQUE, 0, op, "No such player.");
  return 0;
}

static void
dm_stack_pop (player *pl)
{
  if (!pl->stack_items || !pl->stack_position)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Empty stack!");
      return;
    }

  pl->stack_position--;
  new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "Popped item from stack, %d left.", pl->stack_position);
}

/**
 * Get current stack top item for player.
 * Returns NULL if no stacked item.
 * If stacked item disappeared (freed), remove it.
 *
 * Ryo, august 2004
 */
static object *
dm_stack_peek (player *pl)
{
  object *ob;

  if (!pl->stack_position)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Empty stack!");
      return NULL;
    }

  ob = find_object (pl->stack_items[pl->stack_position - 1]);
  if (!ob)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Stacked item was removed!");
      dm_stack_pop (pl);
      return NULL;
    }

  return ob;
}

/**
 * Push specified item on player stack.
 * Inform player of position.
 * Initializes variables if needed.
 */
void
dm_stack_push (player *pl, tag_t item)
{
  if (!pl->stack_items)
    {
      pl->stack_items = (tag_t *) malloc (sizeof (tag_t) * STACK_SIZE);
      memset (pl->stack_items, 0, sizeof (tag_t) * STACK_SIZE);
    }

  if (pl->stack_position == STACK_SIZE)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Item stack full!");
      return;
    }

  pl->stack_items[pl->stack_position] = item;
  new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "Item stacked as %d.", pl->stack_position);
  pl->stack_position++;
}

/**
 * Checks 'params' for object code.
 *
 * Can be:
 *  * empty => get current object stack top for player
 *  * number => get item with that tag, stack it for future use
 *  * $number => get specified stack item
 *  * "me" => player himself
 *
 * At function exit, params points to first non-object char
 *
 * 'from', if not NULL, contains at exit:
 *  * STACK_FROM_NONE => object not found
 *  * STACK_FROM_TOP => top item stack, may be NULL if stack was empty
 *  * STACK_FROM_STACK => item from somewhere in the stack
 *  * STACK_FROM_NUMBER => item by number, pushed on stack
 *
 * Ryo, august 2004
 */
static object *
get_dm_object (player *pl, char **params, int *from)
{
  int item_tag, item_position;
  object *ob;

  if (!pl)
    return NULL;

  if (!params || !*params || **params == '\0')
    {
      if (from)
        *from = STACK_FROM_TOP;
      /* No parameter => get stack item */
      return dm_stack_peek (pl);
    }

  /* Let's clean white spaces */
  while (**params == ' ')
    (*params)++;

  /* Next case: number => item tag */
  if (sscanf (*params, "%d", &item_tag))
    {
      /* Move parameter to next item */
      while (isdigit (**params))
        (*params)++;

      /* And skip blanks, too */
      while (**params == ' ')
        (*params)++;

      /* Get item */
      ob = find_object (item_tag);
      if (!ob)
        {
          if (from)
            *from = STACK_FROM_NONE;
          new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "No such item %d!", item_tag);
          return NULL;
        }

      /* Got one, let's push it on stack */
      dm_stack_push (pl, item_tag);
      if (from)
        *from = STACK_FROM_NUMBER;
      return ob;
    }

  /* Next case: $number => stack item */
  if (sscanf (*params, "$%d", &item_position))
    {
      /* Move parameter to next item */
      (*params)++;

      while (isdigit (**params))
        (*params)++;
      while (**params == ' ')
        (*params)++;

      if (item_position >= pl->stack_position)
        {
          if (from)
            *from = STACK_FROM_NONE;
          new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "No such stack item %d!", item_position);
          return NULL;
        }

      ob = find_object (pl->stack_items[item_position]);
      if (!ob)
        {
          if (from)
            *from = STACK_FROM_NONE;
          new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "Stack item %d was removed.", item_position);
          return NULL;
        }

      if (from)
        *from = item_position < pl->stack_position - 1 ? STACK_FROM_STACK : STACK_FROM_TOP;
      return ob;
    }

  /* Next case: 'me' => return pl->ob */
  if (!strncmp (*params, "me", 2))
    {
      if (from)
        *from = STACK_FROM_NUMBER;
      dm_stack_push (pl, pl->ob->count);

      /* Skip to next token */
      (*params) += 2;
      while (**params == ' ')
        (*params)++;

      return pl->ob;
    }

  /* Last case: get stack top */
  if (from)
    *from = STACK_FROM_TOP;
  return dm_stack_peek (pl);
}

/**
 * This finds and returns the object which matches the name or
 * object nubmer (specified via num #whatever).
 */
static object *
find_object_both (char *params)
{
  if (!params)
    return NULL;

  if (params[0] == '#')
    return find_object (atol (params + 1));
  else
    return find_object_name (params);
}

/**
 * Sets the god for some objects.  params should contain two values -
 * first the object to change, followed by the god to change it to.
 */
int
command_setgod (object *op, char *params)
{
  object *ob, *god;
  char *str;

  if (!params || !(str = strchr (params, ' ')))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: setgod object god");
      return 0;
    }

  /* kill the space, and set string to the next param */
  *str++ = '\0';
  if (!(ob = find_object_both (params)))
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "Set whose god - can not find object %s?", params);
      return 1;
    }

  /*
   * Perhaps this is overly restrictive?  Should we perhaps be able
   * to rebless altars and the like?
   */
  if (ob->type != PLAYER)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "%s is not a player - can not change its god", &ob->name);
      return 1;
    }

  god = find_god (str);
  if (god == NULL)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "No such god %s.", str);
      return 1;
    }

  ob->become_follower (god);
  return 1;
}

int
command_freeze (object *op, char *params)
{
  int ticks;
  player *pl;

  if (!params)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: freeze [ticks] <player>.");
      return 1;
    }

  ticks = atoi (params);
  if (ticks)
    {
      while ((isdigit (*params) || isspace (*params)) && *params != 0)
        params++;
      if (*params == 0)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "Usage: freeze [ticks] <player>.");
          return 1;
        }
    }
  else
    ticks = 100;

  pl = get_other_player_from_name (op, params);
  if (!pl)
    return 1;

  new_draw_info (NDI_UNIQUE | NDI_RED, 0, pl->ob, "You have been frozen by the DM!");
  new_draw_info_format (NDI_UNIQUE, 0, op, "You freeze %s for %d ticks", &pl->ob->name, ticks);
  pl->ob->speed_left = -(pl->ob->speed * ticks);
  return 0;
}

int
command_arrest (object *op, char *params)
{
  object *dummy;
  player *pl;

  if (!op)
    return 0;

  if (params == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: arrest <player>.");
      return 1;
    }

  pl = get_other_player_from_name (op, params);
  if (!pl)
    return 1;

  dummy = get_jail_exit (pl->ob);
  if (!dummy)
    {
      /* we have nowhere to send the prisoner.... */
      new_draw_info (NDI_UNIQUE, 0, op, "can't jail player, there is no map to hold them");
      return 0;
    }

  pl->ob->player_goto (dummy->slaying, dummy->stats.hp, dummy->stats.sp);//TODO
  dummy->destroy ();

  new_draw_info (NDI_UNIQUE, 0, pl->ob, "You have been arrested.");
  new_draw_info (NDI_UNIQUE, 0, op, "OK.");
  LOG (llevInfo, "Player %s arrested by %s\n", &pl->ob->name, &op->name);
  return 1;
}

int
command_summon (object *op, char *params)
{
  int i;
  player *pl;

  if (!op)
    return 0;

  if (params == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: summon <player>.");
      return 1;
    }

  pl = get_other_player_from_name (op, params);
  if (!pl)
    return 1;

  maptile *m = op->map;
  sint16 nx = op->x;
  sint16 ny = op->y;

  i = find_free_spot (op, m, nx, ny, 1, SIZEOFFREE1+1);
  if (i == -1)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can not find a free spot to place summoned player.");
      return 1;
    }

  nx += DIRX (i);
  ny += DIRY (i);

  if (!xy_normalise (m, nx, ny))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can not find a free spot to place summoned player.");
      return 1;
    }

  pl->ob->player_goto (m->path, nx, ny);
  new_draw_info (NDI_UNIQUE, 0, pl->ob, "You are summoned.");
  new_draw_info (NDI_UNIQUE, 0, op, "OK.");

  return 1;
}

/**
 * This function is a real mess, because we're stucking getting
 * the entire item description in one block of text, so we just
 * can't simply parse it - we need to look for double quotes
 * for example.  This could actually get much simpler with just a
 * little help from the client - if we could get line breaks, it
 * makes parsing much easier, eg, something like:
 * arch dragon
 * name big nasty creature
 * hp 5
 * sp 30
 * Is much easier to parse than
 * dragon name "big nasty creature" hp 5 sp 30
 * for example.
 */
int
command_create (object *op, char *params)
{
  object *tmp = NULL;
  int nrof, i, magic, set_magic = 0, set_nrof = 0, gotquote, gotspace;
  char buf[MAX_BUF], *cp, *bp = buf, *bp2, *bp3, *endline;
  archetype *at, *at_spell = NULL;
  artifact *art = NULL;

  if (!op)
    return 0;

  if (params == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: create [nr] [magic] <archetype> [ of <artifact>]" " [variable_to_patch setting]");
      return 1;
    }

  bp = params;

  /* We need to know where the line ends */
  endline = bp + strlen (bp);

  if (sscanf (bp, "%d ", &nrof))
    {
      if ((bp = strchr (params, ' ')) == NULL)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "Usage: create [nr] [magic] <archetype> [ of <artifact>]" " [variable_to_patch setting]");
          return 1;
        }
      bp++;
      set_nrof = 1;
      LOG (llevDebug, "%s creates: (%d) %s\n", &op->name, nrof, bp);
    }

  if (sscanf (bp, "%d ", &magic))
    {
      if ((bp = strchr (bp, ' ')) == NULL)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "Usage: create [nr] [magic] <archetype> [ of <artifact>]" " [variable_to_patch setting]");
          return 1;
        }

      bp++;
      set_magic = 1;
      LOG (llevDebug, "%s creates: (%d) (%d) %s\n", &op->name, nrof, magic, bp);
    }

  if ((cp = strstr (bp, " of ")) != NULL)
    {
      *cp = '\0';
      cp += 4;
    }

  for (bp2 = bp; *bp2; bp2++)
    {
      if (*bp2 == ' ')
        {
          *bp2 = '\0';
          bp2++;
          break;
        }
    }

  if ((at = archetype::find (bp)) == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "No such archetype.");
      return 1;
    }

  if (cp)
    {
      char spell_name[MAX_BUF], *fsp = NULL;

      /*
       * Try to find a spell object for this. Note that
       * we also set up spell_name which is only
       * the first word.
       */

      at_spell = archetype::find (cp);
      if (!at_spell || at_spell->type != SPELL)
        at_spell = find_archetype_by_object_name (cp);
      if (!at_spell || at_spell->type != SPELL)
        {
          assign (spell_name, cp);
          fsp = strchr (spell_name, ' ');
          if (fsp)
            {
              *fsp = 0;
              fsp++;
              at_spell = archetype::find (spell_name);

              /* Got a spell, update the first string pointer */
              if (at_spell && at_spell->type == SPELL)
                bp2 = cp + strlen (spell_name) + 1;
              else
                at_spell = NULL;
            }
        }

      /* OK - we didn't find a spell - presume the 'of'
       * in this case means its an artifact.
       */
      if (!at_spell)
        {
          if (find_artifactlist (at->type) == NULL)
            new_draw_info_format (NDI_UNIQUE, 0, op, "No artifact list for type %d\n", at->type);
          else
            {
              art = find_artifactlist (at->type)->items;

              while (art)
                {
                  if (!strcmp (&art->item->name, cp))
                    break;

                  art = art->next;
                }

              if (!art)
                new_draw_info_format (NDI_UNIQUE, 0, op, "No such artifact ([%d] of %s)", at->type, cp);
            }

          LOG (llevDebug, "%s creates: (%d) (%d) (%s) of (%s)\n", &op->name, set_nrof ? nrof : 0, set_magic ? magic : 0, bp, cp);
        }
    }                           /* if cp */

  if ((at->type == ROD || at->type == WAND || at->type == SCROLL ||
       at->type == HORN || at->type == SPELLBOOK) && !at_spell)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "Unable to find spell %s for object that needs it, or it is of wrong type", cp);
      return 1;
    }

  /*
   * Rather than have two different blocks with a lot of similar code,
   * just create one object, do all the processing, and then determine
   * if that one object should be inserted or if we need to make copies.
   */
  tmp = at->instance ();

  if (set_magic)
    set_abs_magic (tmp, magic);

  if (art)
    give_artifact_abilities (tmp, art->item);

  if (tmp->need_identify ())
    {
      tmp->set_flag (FLAG_IDENTIFIED);
      tmp->clr_flag (FLAG_KNOWN_MAGICAL);
    }

  /*
   * This entire block here tries to find variable pairings,
   * eg, 'hp 4' or the like.  The mess here is that values
   * can be quoted (eg "my cool sword");  So the basic logic
   * is we want to find two spaces, but if we got a quote,
   * any spaces there don't count.
   */
  while (*bp2 && bp2 <= endline)
    {
      gotspace = 0;
      gotquote = 0;

      /* find the first quote */
      for (bp3 = bp2; *bp3 && gotspace < 2 && gotquote < 2; bp3++)
        {

          /* Found a quote - now lets find the second one */
          if (*bp3 == '"')
            {
              *bp3 = ' ';
              bp2 = bp3 + 1;    /* Update start of string */
              bp3++;
              gotquote++;
              while (*bp3)
                {
                  if (*bp3 == '"')
                    {
                      *bp3 = '\0';
                      gotquote++;
                    }
                  else
                    bp3++;
                }
            }
          else if (*bp3 == ' ')
            gotspace++;
        }

      /*
       * If we got two spaces, send the second one to null.
       * if we've reached the end of the line, increase gotspace -
       * this is perfectly valid for the list entry listed.
       */
      if (gotspace == 2 || gotquote == 2)
        {
          bp3--;                /* Undo the extra increment */
          *bp3 = '\0';
        }
      else if (*bp3 == '\0')
        gotspace++;

      if ((gotquote && gotquote != 2) || (gotspace != 2 && gotquote != 2))
        {
          /*
           * Unfortunately, we've clobbered lots of values, so printing
           * out what we have probably isn't useful.  Break out, because
           * trying to recover is probably won't get anything useful
           * anyways, and we'd be confused about end of line pointers
           * anyways.
           */
          new_draw_info_format (NDI_UNIQUE, 0, op, "Malformed create line: %s", bp2);
          break;
        }

      /* bp2 should still point to the start of this line,
       * with bp3 pointing to the end
       */
      if (set_variable (tmp, bp2) == -1)
        new_draw_info_format (NDI_UNIQUE, 0, op, "Unknown variable %s", bp2);
      else
        new_draw_info_format (NDI_UNIQUE, 0, op, "(%s#%d)->%s", &tmp->name, tmp->count, bp2);

      bp2 = bp3 + 1;
    }

  if (at->nrof)
    {
      if (at_spell)
        tmp->insert (at_spell->instance ());

      tmp->x   = op->x;
      tmp->y   = op->y;
      tmp->map = op->map;

      if (set_nrof)
        tmp->nrof = nrof;

      op->insert (tmp);

      /* Let's put this created item on stack so dm can access it easily. */
      dm_stack_push (op->contr, tmp->count);

      return 1;
    }
  else
    {
      for (i = 0; i < (set_nrof ? nrof : 1); i++)
        {
          object *prev = 0, *head = 0;

          for (archetype *atmp = at; atmp; atmp = (archetype *)atmp->more)
            {
              object *dup = atmp->instance ();

              if (at_spell)
                insert_ob_in_ob (at_spell->instance (), dup);

              /*
               * The head is what contains all the important bits,
               * so just copying it over should be fine.
               */
              if (!head)
                {
                  head = dup;
                  tmp->copy_to (dup);
                }

              dup->x = op->x + dup->arch->x;
              dup->y = op->y + dup->arch->y;
              dup->map = op->map;

              if (head != dup)
                {
                  dup->head = head;
                  prev->more = dup;
                }

              prev = dup;
            }

          if (head->flag [FLAG_ALIVE])
            {
              object *check = head;
              int size_x = 0;
              int size_y = 0;

              while (check)
                {
                  size_x = max (size_x, check->arch->x);
                  size_y = max (size_y, check->arch->y);
                  check = check->more;
                }

              if (out_of_map (op->map, head->x + size_x, head->y + size_y))
                {
                  if (head->x < size_x || head->y < size_y)
                    {
                      dm_stack_pop (op->contr);
                      head->destroy ();
                      new_draw_info (NDI_UNIQUE, 0, op, "Object too big to insert in map, or wrong position.");
                      tmp->destroy ();
                      return 1;
                    }

                  check = head;

                  while (check)
                    {
                      check->x -= size_x;
                      check->y -= size_y;
                      check = check->more;
                    }
                }

              insert_ob_in_map (head, op->map, op, 0);
            }
          else
            head = insert_ob_in_ob (head, op);

          /* Let's put this created item on stack so dm can access it easily. */
          /* Wonder if we really want to push all of these, but since
           * things like rods have nrof 0, we want to cover those.
           */
          dm_stack_push (op->contr, head->count);

          if (at->randomitems && !at_spell)
            create_treasure (at->randomitems, head, GT_APPLY, op->map->difficulty, 0);
        }

      /* free the one we used to copy */
      tmp->destroy ();
    }

  return 1;
}

/*
 * Now follows dm-commands which are also acceptable from sockets
 */

int
command_inventory (object *op, char *params)
{
  int i;
  object *tmp;

  if (!params || !sscanf (params, "%d", &i) || !(tmp = find_object (i)))
    {
      op->contr->failmsg ("Inventory of what object (nr)?");
      return 1;
    }

  op->contr->infobox (MSG_CHANNEL ("examine"), tmp->query_inventory (op));

  return 1;
}

/* just show player's their skills for now. Dm's can
 * already see skills w/ inventory command - b.t.
 */

int
command_skills (object *op, char *params)
{
  show_skills (op, params);
  return 0;
}

int
command_dump (object *op, char *params)
{
  object *tmp;

  tmp = get_dm_object (op->contr, &params, NULL);
  if (!tmp)
    return 1;

  char *dump = dump_object (tmp);
  new_draw_info (NDI_UNIQUE, 0, op, dump);
  free (dump);

  if (tmp->flag [FLAG_OBJ_ORIGINAL])
    new_draw_info (NDI_UNIQUE, 0, op, "Object is marked original");

  return 1;
}

int
command_patch (object *op, char *params)
{
  char *arg, *arg2;
  object *tmp;

  tmp = get_dm_object (op->contr, &params, NULL);
  if (!tmp)
    /* Player already informed of failure */
    return 1;

  /* params set to first value by get_dm_default */
  arg = params;
  if (arg == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Patch what values?");
      return 1;
    }

  if ((arg2 = strchr (arg, ' ')))
    arg2++;

  if (set_variable (tmp, arg) == -1)
    new_draw_info_format (NDI_UNIQUE, 0, op, "Unknown variable %s", arg);
  else
    new_draw_info_format (NDI_UNIQUE, 0, op, "(%s#%d)->%s=%s", &tmp->name, tmp->count, arg, arg2);

  return 1;
}

int
command_remove (object *op, char *params)
{
  object *tmp;
  int from;

  tmp = get_dm_object (op->contr, &params, &from);
  if (!tmp)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Remove what object (nr)?");
      return 1;
    }

  if (tmp->type == PLAYER)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Unable to remove a player!");
      return 1;
    }

  if (tmp->flag [FLAG_REMOVED])
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "%s is already removed!", query_name (tmp));
      return 1;
    }

  if (from != STACK_FROM_STACK)
    /* Item is either stack top, or is a number thus is now stack top, let's remove it  */
    dm_stack_pop (op->contr);

  /* Always work on the head - otherwise object will get in odd state */
  if (tmp->head)
    tmp = tmp->head;
  tmp->remove ();
  return 1;
}

int
command_free (object *op, char *params)
{
  object *tmp;
  int from;

  tmp = get_dm_object (op->contr, &params, &from);

  if (!tmp)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Free what object (nr)?");
      return 1;
    }

  if (from != STACK_FROM_STACK)
    /* Item is either stack top, or is a number thus is now stack top, let's remove it  */
    dm_stack_pop (op->contr);

  if (tmp->head)
    tmp = tmp->head;

  tmp->destroy ();
  return 1;
}

/**
 * This adds exp to a player.  We now allow adding to a specific skill.
 */
int
command_addexp (object *op, char *params)
{
  char buf[1024], skill[1024];
  int q;
  sint64 i;
  object *skillob = NULL;

  skill[0] = '\0';
  if ((params == NULL) || (strlen (params) > MAX_BUF) || ((q = sscanf (params, "%1023s %" SCNd64 " %1023[^\n]", buf, &i, skill)) < 2))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Usage: addexp <who> <how much> [<skill>].");
      return 1;
    }

  for_all_players (pl)
    if (!strncmp (pl->ob->name, buf, MAX_NAME))
      {
        if (q >= 3)
          {
            skillob = find_skill_by_name (pl->ob, skill);
            if (!skillob)
              {
                new_draw_info_format (NDI_UNIQUE, 0, op, "Unable to find skill %s in %s", skill, buf);
                return 1;
              }

            i = check_exp_adjust (skillob, i);
            skillob->stats.exp += i;
            calc_perm_exp (skillob);
            player_lvl_adj (pl->ob, skillob);
          }

        pl->ob->stats.exp += i;
        calc_perm_exp (pl->ob);
        player_lvl_adj (pl->ob, NULL);

        return 1;
      }

  new_draw_info (NDI_UNIQUE, 0, op, "No such player.");
  return 1;
}

/**************************************************************************/

/* Mods made by Tyler Van Gorder, May 10-13, 1992.                        */

/* CSUChico : tvangod@cscihp.ecst.csuchico.edu                            */

/**************************************************************************/

int
command_stats (object *op, char *params)
{
  char buf[MAX_BUF];

  if (params == NULL || params[0] == '\0')
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Who?");
      return 1;
    }

  for_all_players (pl)
    if (!strcmp (&pl->ob->name, params))
      {
        sprintf (buf, "Str : %-2d      H.P. : %-4d  MAX : %d", pl->ob->stats.Str, pl->ob->stats.hp, pl->ob->stats.maxhp);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Dex : %-2d      S.P. : %-4d  MAX : %d", pl->ob->stats.Dex, pl->ob->stats.sp, pl->ob->stats.maxsp);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Con : %-2d        AC : %-4d  WC  : %d", pl->ob->stats.Con, pl->ob->stats.ac, pl->ob->stats.wc);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Int : %-2d    Damage : %d", pl->ob->stats.Int, pl->ob->stats.dam);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Wis : %-2d       EXP : %" PRId64, pl->ob->stats.Wis, pl->ob->stats.exp);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Pow : %-2d    Grace : %d", pl->ob->stats.Pow, pl->ob->stats.grace);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        sprintf (buf, "Cha : %-2d      Food : %d", pl->ob->stats.Cha, pl->ob->stats.food);
        new_draw_info (NDI_UNIQUE, 0, op, buf);
        return 1;
      }

  new_draw_info (NDI_UNIQUE, 0, op, "No such player.");
  return 1;
}

int
command_abil (object *op, char *params)
{
  char thing[80], thing2[80];
  int iii;
  char buf[MAX_BUF];

  iii = 0;
  thing[0] = '\0';
  thing2[0] = '\0';
  if (!params || 3 != sscanf (params, "%79s %79s %d", thing, thing2, &iii))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Who?");
      return 1;
    }

  if (!*thing2)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You can't change that.");
      return 1;
    }

  if (iii < MIN_STAT || iii > MAX_STAT)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Illegal range of stat.\n");
      return 1;
    }

  for_all_players (pl)
    {
      if (!strcmp (&pl->ob->name, thing))
        {
          if (!strcmp ("str", thing2)) pl->ob->stats.Str = iii, pl->orig_stats.Str = iii;
          if (!strcmp ("dex", thing2)) pl->ob->stats.Dex = iii, pl->orig_stats.Dex = iii;
          if (!strcmp ("con", thing2)) pl->ob->stats.Con = iii, pl->orig_stats.Con = iii;
          if (!strcmp ("wis", thing2)) pl->ob->stats.Wis = iii, pl->orig_stats.Wis = iii;
          if (!strcmp ("cha", thing2)) pl->ob->stats.Cha = iii, pl->orig_stats.Cha = iii;
          if (!strcmp ("int", thing2)) pl->ob->stats.Int = iii, pl->orig_stats.Int = iii;
          if (!strcmp ("pow", thing2)) pl->ob->stats.Pow = iii, pl->orig_stats.Pow = iii;

          sprintf (buf, "%s has been altered.", &pl->ob->name);
          new_draw_info (NDI_UNIQUE, 0, op, buf);
          pl->ob->update_stats ();
          return 1;
        }
    }

  new_draw_info (NDI_UNIQUE, 0, op, "No such player.");
  return 1;
}

int
command_invisible (object *op, char *params)
{
  if (op)
    {
      op->invisible += TIME2TICK (60);
      update_object (op, UP_OBJ_CHANGE);
      new_draw_info (NDI_UNIQUE, 0, op, "You turn invisible.");
    }

  return 0;
}

/**
 * Returns spell object (from archetypes) by name.
 * Returns NULL if 0 or more than one spell matches.
 * Used for wizard's learn spell/prayer.
 *
 * op is the player issuing the command.
 */
static object *
get_spell_by_name (object *op, shstr_cmp spell_name)
{
  /* First check for full name matches. */
  int conflict_found = 0;
  archetype *found = 0;

  for_all_archetypes (at)
    {
      if (at->type != SPELL)
        continue;

      if (at->object::name != spell_name)
        continue;

      if (found)
        {
          if (!conflict_found)
            {
              conflict_found = 1;
              new_draw_info_format (NDI_UNIQUE, 0, op, "More than one archetype matches the spell name %s:", &spell_name);
              new_draw_info_format (NDI_UNIQUE, 0, op, "- %s", &found->archname);
            }

          new_draw_info_format (NDI_UNIQUE, 0, op, "- %s", &at->archname);
          return 0;
        }

      found = at;
    }

  /* Return if exactly one archetype matches. */
  if (found)
    return found->instance ();

  /* No spell found: just print an error message. */
  new_draw_info_format (NDI_UNIQUE, 0, op, "The spell does not exist.");

  return 0;
}

static int
command_learn_spell_or_prayer (object *op, char *params, int special_prayer)
{
  object *tmp;

  if (op->contr == NULL || params == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Which spell do you want to learn?");
      return 0;
    }

  tmp = get_spell_by_name (op, params);
  if (tmp == NULL)
    {
      return 0;
    }

  if (check_spell_known (op, tmp->name))
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "You already know the spell %s.", &tmp->name);
      return 0;
    }

  do_learn_spell (op, tmp, special_prayer);
  tmp->destroy ();
  return 1;
}

int
command_learn_spell (object *op, char *params)
{
  return command_learn_spell_or_prayer (op, params, 0);
}

int
command_learn_special_prayer (object *op, char *params)
{
  return command_learn_spell_or_prayer (op, params, 1);
}

int
command_forget_spell (object *op, char *params)
{
  object *spell;

  if (op->contr == NULL || params == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Which spell do you want to forget?");
      return 0;
    }

  spell = op->find_spell (params);
  if (spell == NULL)
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "You do not know the spell %s.", params);
      return 0;
    }

  do_forget_spell (op, spell->name);
  return 1;
}

/**
 * Pop the stack top.
 */
int
command_stack_pop (object *op, char *params)
{
  dm_stack_pop (op->contr);
  return 0;
}

/**
 * Push specified item on stack.
 */
int
command_stack_push (object *op, char *params)
{
  object *ob;
  int from;

  ob = get_dm_object (op->contr, &params, &from);

  if (ob && from != STACK_FROM_NUMBER)
    /* Object was from stack, need to push it again */
    dm_stack_push (op->contr, ob->count);

  return 0;
}

/**
 * Displays stack contents.
 */
int
command_stack_list (object *op, char *params)
{
  int item;
  object *display;
  player *pl = op->contr;

  new_draw_info (NDI_UNIQUE, 0, op, "Item stack contents:");

  for (item = 0; item < pl->stack_position; item++)
    {
      display = find_object (pl->stack_items[item]);
      if (display)
        new_draw_info_format (NDI_UNIQUE, 0, op, " %d : %s [%d]", item, &display->name, display->count);
      else
        /* Item was freed */
        new_draw_info_format (NDI_UNIQUE, 0, op, " %d : (lost item: %d)", item, pl->stack_items[item]);
    }

  return 0;
}

/**
 * Empty DM item stack.
 */
int
command_stack_clear (object *op, char *params)
{
  op->contr->stack_position = 0;
  new_draw_info (NDI_UNIQUE, 0, op, "Item stack cleared.");
  return 0;
}

int
command_insert_into (object *op, char *params)
{
  object *left, *right;
  int left_from, right_from;

  left = get_dm_object (op->contr, &params, &left_from);
  if (!left)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Insert into what object?");
      return 0;
    }

  if (left_from == STACK_FROM_NUMBER)
    /* Item was stacked, remove it else right will be the same... */
    dm_stack_pop (op->contr);

  right = get_dm_object (op->contr, &params, &right_from);

  if (!right)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Insert what item?");
      return 0;
    }

  if (left_from == STACK_FROM_TOP && right_from == STACK_FROM_TOP)
    {
      /*
       * Special case: both items were taken from stack top.
       * Override the behaviour, taking left as item just below top, if exists.
       * See function description for why.
       * Besides, can't insert an item into itself.
       */
      if (op->contr->stack_position > 1)
        {
          left = find_object (op->contr->stack_items[op->contr->stack_position - 2]);
          if (left)
            new_draw_info (NDI_UNIQUE, 0, op, "(Note: item to insert into taken from undertop)");
          else
            /* Stupid case: item under top was freed, fallback to stack top */
            left = right;
        }
    }

  if (left == right)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can't insert an object into itself!");
      return 0;
    }

  if (right->type == PLAYER)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can't insert a player into something!");
      return 0;
    }

  if (!right->flag [FLAG_REMOVED])
    right->remove ();

  object *inserted = insert_ob_in_ob (right, left);

  new_draw_info_format (NDI_UNIQUE, 0, op, "Inserted %s in %s", query_name (inserted), query_name (left));

  return 0;

}
Revision:	1.97
Committed:	Wed Dec 5 19:31:26 2018 UTC (5 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.96:	+3 -3 lines
Log Message:	improve, not fix, some sscanf madness, probably introducing more bugs