server/socket/item.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2002 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 author can be reached via e-mail to <crossfire@schmorp.de>
*/

/**
 * \file
 * Client/server logic.
 *
 * \date 2003-12-02
 *
 * This containes item logic for client/server.  It doesn't contain
 * the actual commands that send the data, but does contain
 * the logic for what items should be sent.
 */


#include <global.h>
#include <object.h>             /* LOOK_OBJ */
#include <newclient.h>
#include <newserver.h>
#include <sproto.h>

/** This is the maximum number of bytes we expect any one item to take up */
#define MAXITEMLEN  300

/*******************************************************************************
 *
 * Functions related to sending object data to the client.
 *
 ******************************************************************************/

/**
 *  This is a similar to query_name, but returns flags
 *  to be sended to client. 
 */
unsigned int
query_flags (object *op)
{
  unsigned int flags = 0;

  if (QUERY_FLAG (op, FLAG_APPLIED))
    {
      switch (op->type)
        {
            case BOW:
            case WAND:
            case ROD:
            case HORN:
              flags = a_readied;
              break;
            case WEAPON:
              flags = a_wielded;
              break;
            case SKILL:
            case ARMOUR:
            case HELMET:
            case SHIELD:
            case RING:
            case BOOTS:
            case GLOVES:
            case AMULET:
            case GIRDLE:
            case BRACERS:
            case CLOAK:
              flags = a_worn;
              break;
            case CONTAINER:
              flags = a_active;
              break;
            default:
              flags = a_applied;
              break;
        }
    }
  if (op->type == CONTAINER && ((op->env && op->env->container == op) || (!op->env && QUERY_FLAG (op, FLAG_APPLIED))))
    flags |= F_OPEN;

  if (QUERY_FLAG (op, FLAG_KNOWN_CURSED))
    {
      if (QUERY_FLAG (op, FLAG_DAMNED))
        flags |= F_DAMNED;
      else if (QUERY_FLAG (op, FLAG_CURSED))
        flags |= F_CURSED;
    }
  if (QUERY_FLAG (op, FLAG_KNOWN_MAGICAL) && !QUERY_FLAG (op, FLAG_IDENTIFIED))
    flags |= F_MAGIC;
  if (QUERY_FLAG (op, FLAG_UNPAID))
    flags |= F_UNPAID;
  if (QUERY_FLAG (op, FLAG_INV_LOCKED))
    flags |= F_LOCKED;

  return flags;
}

/* Used in the send_look to put object head into SockList
 * sl for socket ns.  Need socket to know if we need to send
 * animation of face to the client.
 */
static void
add_object_to_socklist (NewSocket &ns, SockList &sl, object *head)
{
  int flags, len, anim_speed;
  char item_n[MAX_BUF];
  const char *item_p;

  flags = query_flags (head);
  if (QUERY_FLAG (head, FLAG_NO_PICK))
    flags |= F_NOPICK;

  if (!(ns.faces_sent[head->face->number] & NS_FACESENT_FACE))
    esrv_send_face (&ns, head->face->number, 0);

  if (QUERY_FLAG (head, FLAG_ANIMATE) && !ns.anims_sent[head->animation_id])
    esrv_send_animation (&ns, head->animation_id);

  sl << uint32 (head->count)
     << uint32 (flags)
     << uint32 (QUERY_FLAG (head, FLAG_NO_PICK) ? -1 : WEIGHT (head))
     << uint32 (head->face->number);

  if (!head->custom_name)
    {
      strncpy (item_n, query_base_name (head, 0), 127);
      item_n[127] = 0;
      len = strlen (item_n);
      item_p = query_base_name (head, 1);
    }
  else
    {
      strncpy (item_n, head->custom_name, 127);
      item_n[127] = 0;
      len = strlen (item_n);
      item_p = head->custom_name;
    }

  strncpy (item_n + len + 1, item_p, 127);
  item_n[254] = 0;
  len += strlen (item_n + 1 + len) + 1;

  sl << data8 (item_n, len)
     << uint16 (head->animation_id);

  anim_speed = 0;
  if (QUERY_FLAG (head, FLAG_ANIMATE))
    {
      if (head->anim_speed)
        anim_speed = head->anim_speed;
      else
        {
          if (FABS (head->speed) < 0.001)
            anim_speed = 255;
          else if (FABS (head->speed) >= 1.0)
            anim_speed = 1;
          else
            anim_speed = (int) (1.0 / FABS (head->speed));
        }

      if (anim_speed > 255)
        anim_speed = 255;
    }

  sl << uint8  (anim_speed)
     << uint32 (head->nrof);

  if (ns.itemcmd == 2)
    sl << uint16 (head->client_type);

  SET_FLAG (head, FLAG_CLIENT_SENT);
}


/**
 * Send the look window.  Don't need to do animations here 
 * This sends all the faces to the client, not just updates.  This is
 * because object ordering would otherwise be inconsistent
 */

void
esrv_draw_look (object *pl)
{
  object *tmp, *last;
  int got_one = 0, start_look = 0, end_look = 0;
  char buf[MAX_BUF];

  if (!pl->contr->socket.update_look)
    {
      LOG (llevDebug, "esrv_draw_look called when update_look was not set\n");
      return;
    }
  else
    pl->contr->socket.update_look = 0;

  if (QUERY_FLAG (pl, FLAG_REMOVED)
      || !pl->map
      || pl->map->in_memory != MAP_IN_MEMORY
      || out_of_map (pl->map, pl->x, pl->y))
    return;

  for (tmp = get_map_ob (pl->map, pl->x, pl->y); tmp && tmp->above; tmp = tmp->above)
    ;

  SockList sl (MAXSOCKBUF);

  Write_String_To_Socket (&pl->contr->socket, "delinv 0", sizeof ("delinv 0") - 1);

  sl.printf ("item%d ", pl->contr->socket.itemcmd);

  sl << uint32 (0);

  if (!(pl->contr->socket.faces_sent[empty_face->number] & NS_FACESENT_FACE))
    esrv_send_face (&pl->contr->socket, empty_face->number, 0);

  if (pl->contr->socket.look_position)
    {
      sl << uint32 (0x80000000 | (pl->contr->socket.look_position - NUM_LOOK_OBJECTS))
         << uint32 (0)
         << sint32 (-1)
         << uint32 (empty_face->number);

      sl.printf ("Click here to see %d previous items", NUM_LOOK_OBJECTS);

      sl << uint16 (0)
         << uint8  (0)
         << uint32 (0);

      if (pl->contr->socket.itemcmd == 2)
        sl << uint16 (0);
    }

  for (last = NULL; tmp != last; tmp = tmp->below)
    {
      object *head;

      if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) && !last)
        {
          last = tmp->below;    /* assumes double floor mode */
          if (last && QUERY_FLAG (last, FLAG_IS_FLOOR))
            last = last->below;
        }

      if (LOOK_OBJ (tmp))
        {
          if (++start_look < pl->contr->socket.look_position)
            continue;

          end_look++;

          if (end_look > NUM_LOOK_OBJECTS)
            {
              /* What we basically do is make a 'fake' object - when the user applies it,
               * we notice the special tag the object has, and act accordingly.
               */
              sl << uint32 (0x80000000 | (pl->contr->socket.look_position + NUM_LOOK_OBJECTS))
                 << uint32 (0)
                 << uint32 ((uint32) - 1)
                 << uint32 (empty_face->number);

              sl.printf ("Click here to see next group of items");

              sl << uint16 (0)
                 << uint8  (0)
                 << uint32 (0);

              if (pl->contr->socket.itemcmd == 2)
                sl << uint16 (0);

              break;
            }

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

          add_object_to_socklist (pl->contr->socket, sl, head);
          got_one++;

          if (sl.len >= (MAXSOCKBUF - MAXITEMLEN))
            {
              Send_With_Handling (&pl->contr->socket, &sl);

              sl.reset ();
              sl.printf ("item%d ", pl->contr->socket.itemcmd);
              sl << uint32 (0);
              got_one = 0;
            }
        }                       /* If LOOK_OBJ() */
    }
  
  if (got_one)
    Send_With_Handling (&pl->contr->socket, &sl);

  sl.free ();
}

/**
 * Sends whole inventory.
 */
void
esrv_send_inventory (object *pl, object *op)
{
  object *tmp;
  int got_one = 0;

  SockList sl (MAXSOCKBUF);

  sl.printf ("delinv %d", op->count);
  Send_With_Handling (&pl->contr->socket, &sl);

  sl.reset ();
  sl.printf ("item%d ", pl->contr->socket.itemcmd);

  sl << uint32 (op->count);

  for (tmp = op->inv; tmp; tmp = tmp->below)
    {
      object *head;

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

      if (LOOK_OBJ (head))
        {
          add_object_to_socklist (pl->contr->socket, sl, head);

          got_one++;

          /* IT is possible for players to accumulate a huge amount of
           * items (especially with some of the bags out there) to
           * overflow the buffer.  IF so, send multiple item commands.
           */
          if (sl.len >= (MAXSOCKBUF - MAXITEMLEN))
            {
              Send_With_Handling (&pl->contr->socket, &sl);
              sprintf ((char *) sl.buf, "item%d ", pl->contr->socket.itemcmd);
              sl.len = strlen ((char *) sl.buf);
              sl << uint32 (op->count);
              got_one = 0;
            }
        }                       /* If LOOK_OBJ() */
    }

  if (got_one)
    Send_With_Handling (&pl->contr->socket, &sl);

  sl.free ();
}

/**
 * Updates object *op for player *pl.
 *
 * flags is a list of values to update
 * to the client (as defined in newclient.h - might as well use the
 * same value both places.
 */

void
esrv_update_item (int flags, object *pl, object *op)
{
  /* If we have a request to send the player item, skip a few checks. */
  if (op != pl)
    {
      if (!LOOK_OBJ (op))
        return;
      /* we remove the check for op->env, because in theory, the object
       * is hopefully in the same place, so the client should preserve
       * order.
       */
    }

  if (!QUERY_FLAG (op, FLAG_CLIENT_SENT))
    {
      /* FLAG_CLIENT_SENT is debug only.  We are using it to see where
       * this is happening - we can set a breakpoint here in the debugger
       * and track back the call.
       */
      LOG (llevDebug, "We have not sent item %s (%d)\n", &op->name, op->count);
    }

  SockList sl (MAXSOCKBUF);

  sl << "upditem "
     << uint8 (flags);

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

  sl << uint32 (op->count);

  if (flags & UPD_LOCATION)
    sl << uint32 (op->env ? op->env->count : 0);

  if (flags & UPD_FLAGS)
    sl << uint32 (query_flags (op));

  if (flags & UPD_WEIGHT)
    {
      sint32 weight = WEIGHT (op);

      sl << uint32 (QUERY_FLAG (op, FLAG_NO_PICK) ? -1 : weight);

      if (pl == op)
        op->contr->last_weight = weight;
    }

  if (flags & UPD_FACE)
    {
      if (!(pl->contr->socket.faces_sent[op->face->number] & NS_FACESENT_FACE))
        esrv_send_face (&pl->contr->socket, op->face->number, 0);

      sl << uint32 (op->face->number);
    }

  if (flags & UPD_NAME)
    {
      int len;
      const char *item_p;
      char item_n[MAX_BUF];

      if (!op->custom_name)
        {
          strncpy (item_n, query_base_name (op, 0), 127);
          item_n[127] = 0;
          len = strlen (item_n);
          item_p = query_base_name (op, 1);
        }
      else
        {
          strncpy (item_n, op->custom_name, 127);
          item_n[127] = 0;
          len = strlen (item_n);
          item_p = op->custom_name;
        }

      strncpy (item_n + len + 1, item_p, 127);
      item_n[254] = 0;
      len += strlen (item_n + 1 + len) + 1;

      sl << data8 (item_n, len);
    }

  if (flags & UPD_ANIM)
    sl << uint16 (op->animation_id);

  if (flags & UPD_ANIMSPEED)
    {
      int anim_speed = 0;

      if (QUERY_FLAG (op, FLAG_ANIMATE))
        {
          if (op->anim_speed)
            anim_speed = op->anim_speed;
          else
            {
              if (FABS (op->speed) < 0.001)
                anim_speed = 255;
              else if (FABS (op->speed) >= 1.0)
                anim_speed = 1;
              else
                anim_speed = (int) (1.0 / FABS (op->speed));
            }

          if (anim_speed > 255)
            anim_speed = 255;
        }

      sl << uint8  (anim_speed);
    }

  if (flags & UPD_NROF)
    sl << uint32 (op->nrof);

  Send_With_Handling (&pl->contr->socket, &sl);
  sl.free ();
}

/**
 * Sends item's info to player.
 */
void
esrv_send_item (object *pl, object *op)
{
  /* If this is not the player object, do some more checks */
  if (op != pl)
    {
      /* We only send 'visibile' objects to the client */
      if (!LOOK_OBJ (op))
        return;
      /* if the item is on the ground, mark that the look needs to
       * be updated.
       */
      if (!op->env)
        {
          pl->contr->socket.update_look = 1;
          return;
        }
    }

  SockList sl (MAXSOCKBUF);

  sl.printf ("item%d ", pl->contr->socket.itemcmd);

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

  sl << uint32 (op->env ? op->env->count : 0);

  add_object_to_socklist (pl->contr->socket, sl, op);

  Send_With_Handling (&pl->contr->socket, &sl);
  SET_FLAG (op, FLAG_CLIENT_SENT);

  sl.free ();
}

/**
 * Tells the client to delete an item.  Uses the item
 * command with a -1 location.
 */

void
esrv_del_item (player *pl, int tag)
{
  SockList sl (MAXSOCKBUF);

  sl << "delitem "
     << uint32 (tag);

  Send_With_Handling (&pl->socket, &sl);
  sl.free ();
}


/*******************************************************************************
 *
 * Client has requested us to do something with an object.
 *
 ******************************************************************************/

/**
 * Takes a player and object count (tag) and returns the actual object
 * pointer, or null if it can't be found.
 */

object *
esrv_get_ob_from_count (object *pl, tag_t count)
{
  object *op, *tmp;

  if (pl->count == count)
    return pl;

  for (op = pl->inv; op; op = op->below)
    if (op->count == count)
      return op;
    else if (op->type == CONTAINER && pl->container == op)
      for (tmp = op->inv; tmp; tmp = tmp->below)
        if (tmp->count == count)
          return tmp;

  for (op = get_map_ob (pl->map, pl->x, pl->y); op; op = op->above)
    if (op->head != NULL && op->head->count == count)
      return op;
    else if (op->count == count)
      return op;
    else if (op->type == CONTAINER && pl->container == op)
      for (tmp = op->inv; tmp; tmp = tmp->below)
        if (tmp->count == count)
          return tmp;

  return NULL;
}


/** Client wants to examine some object.  So lets do so. */
void
ExamineCmd (char *buf, int len, player *pl)
{
  tag_t tag = atoi (buf);

  /* If the high bit is set, player examined a pseudo object. */
  if (tag & 0x80000000)
    return;

  object *op = esrv_get_ob_from_count (pl->ob, tag);

  if (!op)
    {
      LOG (llevDebug, "Player '%s' tried to examine the unknown object (%ld)\n", &pl->ob->name, tag);
      return;
    }

  examine (pl->ob, op);
}

/** Client wants to apply some object.  Lets do so. */
void
ApplyCmd (char *buf, int len, player *pl)
{
  tag_t tag = atoi (buf);

  /* sort of a hack, but if the player saves and the player then manually
   * applies a savebed (or otherwise tries to do stuff), we run into trouble.
   */
  if (QUERY_FLAG (pl->ob, FLAG_REMOVED))
    return;

  /* If the high bit is set, player applied a pseudo object. */
  if (tag & 0x80000000)
    {
      pl->socket.look_position = tag & 0x7fffffff;
      pl->socket.update_look = 1;
      return;
    }

  object *op = esrv_get_ob_from_count (pl->ob, tag);

  if (!op)
    {
      LOG (llevDebug, "Player '%s' tried to apply the unknown object (%d)\n", &pl->ob->name, tag);
      return;
    }

  player_apply (pl->ob, op, 0, 0);
}

/** Client wants to apply some object.  Lets do so. */
void
LockItem (uint8 *data, int len, player *pl)
{
  int flag = data[0];
  tag_t tag = net_uint32 (data + 1);
  object *op = esrv_get_ob_from_count (pl->ob, tag);

  if (!op)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Could not find object to lock/unlock");
      return;
    }

  if (!flag)
    CLEAR_FLAG (op, FLAG_INV_LOCKED);
  else
    SET_FLAG (op, FLAG_INV_LOCKED);

  esrv_update_item (UPD_FLAGS, pl->ob, op);
}

/** Client wants to apply some object.  Lets do so. */
void
MarkItem (uint8 * data, int len, player *pl)
{
  tag_t tag = net_uint32 (data);
  object *op = esrv_get_ob_from_count (pl->ob, tag);

  if (!op)
    {
      new_draw_info (NDI_UNIQUE, 0, pl->ob, "Could not find object to mark");
      return;
    }

  pl->mark = op;
  new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "Marked item %s", query_name (op));
}

/**
 * look_at prints items on the specified square.
 *
 * [ removed EARTHWALL check and added check for containers inventory.
 *   Tero.Haatanen@lut.fi ]
 */
void
look_at (object *op, int dx, int dy)
{
  object *tmp;
  int flag = 0;
  sint16 x, y;
  maptile *m;

  x = op->x + dx;
  y = op->y + dy;

  if (out_of_map (op->map, x, y))
    return;

  m = get_map_from_coord (op->map, &x, &y);
  if (!m)
    return;

  for (tmp = get_map_ob (m, x, y); tmp != NULL && tmp->above != NULL; tmp = tmp->above);

  for (; tmp != NULL; tmp = tmp->below)
    {
      if (tmp->invisible && !QUERY_FLAG (op, FLAG_WIZ))
        continue;

      if (!flag)
        {
          if (dx || dy)
            new_draw_info (NDI_UNIQUE, 0, op, "There you see:");
          else
            {
              clear_win_info (op);
              new_draw_info (NDI_UNIQUE, 0, op, "You see:");
            }
          flag = 1;
        }

      if (QUERY_FLAG (op, FLAG_WIZ))
        new_draw_info_format (NDI_UNIQUE, 0, op, "- %s (%d).", query_name (tmp), tmp->count);
      else
        new_draw_info_format (NDI_UNIQUE, 0, op, "- %s.", query_name (tmp));

      if (((tmp->inv != NULL || (tmp->head && tmp->head->inv)) &&
           (tmp->type != CONTAINER && tmp->type != FLESH)) || QUERY_FLAG (op, FLAG_WIZ))
        inventory (op, tmp->head == NULL ? tmp : tmp->head);

      if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) && !QUERY_FLAG (op, FLAG_WIZ))        /* don't continue under the floor */
        break;
    }

  if (!flag)
    {
      if (dx || dy)
        new_draw_info (NDI_UNIQUE, 0, op, "You see nothing there.");
      else
        new_draw_info (NDI_UNIQUE, 0, op, "You see nothing.");
    }
}


/** Client wants to look at some object.  Lets do so. */
void
LookAt (char *buf, int len, player *pl)
{
  int dx, dy;
  char *cp;

  dx = atoi (buf);
  if (!(cp = strchr (buf, ' ')))
    {
      return;
    }
  dy = atoi (cp);

  if (FABS (dx) > pl->socket.mapx / 2 || FABS (dy) > pl->socket.mapy / 2)
    return;

  if (pl->blocked_los[dx + pl->socket.mapx / 2][dy + pl->socket.mapy / 2])
    return;

  look_at (pl->ob, dx, dy);
}

/** Move an object to a new location */
void
esrv_move_object (object *pl, tag_t to, tag_t tag, long nrof)
{
  object *op, *env;

  op = esrv_get_ob_from_count (pl, tag);
  if (!op)
    {
      LOG (llevDebug, "Player '%s' tried to move an unknown object (%ld)\n", &pl->name, tag);
      return;
    }

  if (!to)
    {                           /* drop it to the ground */
      if (op->map && !op->env)
        return;

      /* If it is an active container, then we should drop all objects
       * in the container and not the container itself.
       */
      if (op->inv && QUERY_FLAG (op, FLAG_APPLIED))
        {
          object *current, *next;

          for (current = op->inv; current != NULL; current = next)
            {
              next = current->below;
              drop_object (pl, current, 0);
            }

          esrv_update_item (UPD_WEIGHT, pl, op);
        }
      else
        {
          drop_object (pl, op, nrof);
        }
      return;
    }
  else if (to == pl->count)
    {                           /* pick it up to the inventory */
      /* return if player has already picked it up */
      if (op->env == pl)
        return;

      pl->contr->count = nrof;
      pick_up (pl, op);
      return;
    }

  env = esrv_get_ob_from_count (pl, to);
  if (!env)
    {
      LOG (llevDebug, "Player '%s' tried to move object to the unknown location (%d)\n", &pl->name, to);
      return;
    }

  /* put_object_in_sack presumes that necessary sanity checking
   * has already been done (eg, it can be picked up and fits in
   * in a sack, so check for those things.  We should also check
   * an make sure env is in fact a container for that matter.
   */
  if (env->type == CONTAINER && can_pick (pl, op) && sack_can_hold (pl, env, op, nrof))
    {
      put_object_in_sack (pl, env, op, nrof);
    }
}

Revision:	1.14
Committed:	Thu Dec 14 00:23:59 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.13:	+58 -83 lines
Log Message:	moar rewrite
#	Content
1	/*
2	CrossFire, A Multiplayer game for X-windows
3
4	Copyright (C) 2002 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20
21	The author can be reached via e-mail to <crossfire@schmorp.de>
22	*/
23
24	/**
25	* \file
26	* Client/server logic.
27	*
28	* \date 2003-12-02
29	*
30	* This containes item logic for client/server. It doesn't contain
31	* the actual commands that send the data, but does contain
32	* the logic for what items should be sent.
33	*/
34
35
36	#include <global.h>
37	#include <object.h> /* LOOK_OBJ */
38	#include <newclient.h>
39	#include <newserver.h>
40	#include <sproto.h>
41
42	/** This is the maximum number of bytes we expect any one item to take up */
43	#define MAXITEMLEN 300
44
45	/*******************************************************************************
46	*
47	* Functions related to sending object data to the client.
48	*
49	******************************************************************************/
50
51	/**
52	* This is a similar to query_name, but returns flags
53	* to be sended to client.
54	*/
55	unsigned int
56	query_flags (object *op)
57	{
58	unsigned int flags = 0;
59
60	if (QUERY_FLAG (op, FLAG_APPLIED))
61	{
62	switch (op->type)
63	{
64	case BOW:
65	case WAND:
66	case ROD:
67	case HORN:
68	flags = a_readied;
69	break;
70	case WEAPON:
71	flags = a_wielded;
72	break;
73	case SKILL:
74	case ARMOUR:
75	case HELMET:
76	case SHIELD:
77	case RING:
78	case BOOTS:
79	case GLOVES:
80	case AMULET:
81	case GIRDLE:
82	case BRACERS:
83	case CLOAK:
84	flags = a_worn;
85	break;
86	case CONTAINER:
87	flags = a_active;
88	break;
89	default:
90	flags = a_applied;
91	break;
92	}
93	}
94	if (op->type == CONTAINER && ((op->env && op->env->container == op) \|\| (!op->env && QUERY_FLAG (op, FLAG_APPLIED))))
95	flags \|= F_OPEN;
96
97	if (QUERY_FLAG (op, FLAG_KNOWN_CURSED))
98	{
99	if (QUERY_FLAG (op, FLAG_DAMNED))
100	flags \|= F_DAMNED;
101	else if (QUERY_FLAG (op, FLAG_CURSED))
102	flags \|= F_CURSED;
103	}
104	if (QUERY_FLAG (op, FLAG_KNOWN_MAGICAL) && !QUERY_FLAG (op, FLAG_IDENTIFIED))
105	flags \|= F_MAGIC;
106	if (QUERY_FLAG (op, FLAG_UNPAID))
107	flags \|= F_UNPAID;
108	if (QUERY_FLAG (op, FLAG_INV_LOCKED))
109	flags \|= F_LOCKED;
110
111	return flags;
112	}
113
114	/* Used in the send_look to put object head into SockList
115	* sl for socket ns. Need socket to know if we need to send
116	* animation of face to the client.
117	*/
118	static void
119	add_object_to_socklist (NewSocket &ns, SockList &sl, object *head)
120	{
121	int flags, len, anim_speed;
122	char item_n[MAX_BUF];
123	const char *item_p;
124
125	flags = query_flags (head);
126	if (QUERY_FLAG (head, FLAG_NO_PICK))
127	flags \|= F_NOPICK;
128
129	if (!(ns.faces_sent[head->face->number] & NS_FACESENT_FACE))
130	esrv_send_face (&ns, head->face->number, 0);
131
132	if (QUERY_FLAG (head, FLAG_ANIMATE) && !ns.anims_sent[head->animation_id])
133	esrv_send_animation (&ns, head->animation_id);
134
135	sl << uint32 (head->count)
136	<< uint32 (flags)
137	<< uint32 (QUERY_FLAG (head, FLAG_NO_PICK) ? -1 : WEIGHT (head))
138	<< uint32 (head->face->number);
139
140	if (!head->custom_name)
141	{
142	strncpy (item_n, query_base_name (head, 0), 127);
143	item_n[127] = 0;
144	len = strlen (item_n);
145	item_p = query_base_name (head, 1);
146	}
147	else
148	{
149	strncpy (item_n, head->custom_name, 127);
150	item_n[127] = 0;
151	len = strlen (item_n);
152	item_p = head->custom_name;
153	}
154
155	strncpy (item_n + len + 1, item_p, 127);
156	item_n[254] = 0;
157	len += strlen (item_n + 1 + len) + 1;
158
159	sl << data8 (item_n, len)
160	<< uint16 (head->animation_id);
161
162	anim_speed = 0;
163	if (QUERY_FLAG (head, FLAG_ANIMATE))
164	{
165	if (head->anim_speed)
166	anim_speed = head->anim_speed;
167	else
168	{
169	if (FABS (head->speed) < 0.001)
170	anim_speed = 255;
171	else if (FABS (head->speed) >= 1.0)
172	anim_speed = 1;
173	else
174	anim_speed = (int) (1.0 / FABS (head->speed));
175	}
176
177	if (anim_speed > 255)
178	anim_speed = 255;
179	}
180
181	sl << uint8 (anim_speed)
182	<< uint32 (head->nrof);
183
184	if (ns.itemcmd == 2)
185	sl << uint16 (head->client_type);
186
187	SET_FLAG (head, FLAG_CLIENT_SENT);
188	}
189
190
191	/**
192	* Send the look window. Don't need to do animations here
193	* This sends all the faces to the client, not just updates. This is
194	* because object ordering would otherwise be inconsistent
195	*/
196
197	void
198	esrv_draw_look (object *pl)
199	{
200	object tmp, last;
201	int got_one = 0, start_look = 0, end_look = 0;
202	char buf[MAX_BUF];
203
204	if (!pl->contr->socket.update_look)
205	{
206	LOG (llevDebug, "esrv_draw_look called when update_look was not set\n");
207	return;
208	}
209	else
210	pl->contr->socket.update_look = 0;
211
212	if (QUERY_FLAG (pl, FLAG_REMOVED)
213	\|\| !pl->map
214	\|\| pl->map->in_memory != MAP_IN_MEMORY
215	\|\| out_of_map (pl->map, pl->x, pl->y))
216	return;
217
218	for (tmp = get_map_ob (pl->map, pl->x, pl->y); tmp && tmp->above; tmp = tmp->above)
219	;
220
221	SockList sl (MAXSOCKBUF);
222
223	Write_String_To_Socket (&pl->contr->socket, "delinv 0", sizeof ("delinv 0") - 1);
224
225	sl.printf ("item%d ", pl->contr->socket.itemcmd);
226
227	sl << uint32 (0);
228
229	if (!(pl->contr->socket.faces_sent[empty_face->number] & NS_FACESENT_FACE))
230	esrv_send_face (&pl->contr->socket, empty_face->number, 0);
231
232	if (pl->contr->socket.look_position)
233	{
234	sl << uint32 (0x80000000 \| (pl->contr->socket.look_position - NUM_LOOK_OBJECTS))
235	<< uint32 (0)
236	<< sint32 (-1)
237	<< uint32 (empty_face->number);
238
239	sl.printf ("Click here to see %d previous items", NUM_LOOK_OBJECTS);
240
241	sl << uint16 (0)
242	<< uint8 (0)
243	<< uint32 (0);
244
245	if (pl->contr->socket.itemcmd == 2)
246	sl << uint16 (0);
247	}
248
249	for (last = NULL; tmp != last; tmp = tmp->below)
250	{
251	object *head;
252
253	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) && !last)
254	{
255	last = tmp->below; /* assumes double floor mode */
256	if (last && QUERY_FLAG (last, FLAG_IS_FLOOR))
257	last = last->below;
258	}
259
260	if (LOOK_OBJ (tmp))
261	{
262	if (++start_look < pl->contr->socket.look_position)
263	continue;
264
265	end_look++;
266
267	if (end_look > NUM_LOOK_OBJECTS)
268	{
269	/* What we basically do is make a 'fake' object - when the user applies it,
270	* we notice the special tag the object has, and act accordingly.
271	*/
272	sl << uint32 (0x80000000 \| (pl->contr->socket.look_position + NUM_LOOK_OBJECTS))
273	<< uint32 (0)
274	<< uint32 ((uint32) - 1)
275	<< uint32 (empty_face->number);
276
277	sl.printf ("Click here to see next group of items");
278
279	sl << uint16 (0)
280	<< uint8 (0)
281	<< uint32 (0);
282
283	if (pl->contr->socket.itemcmd == 2)
284	sl << uint16 (0);
285
286	break;
287	}
288
289	if (tmp->head)
290	head = tmp->head;
291	else
292	head = tmp;
293
294	add_object_to_socklist (pl->contr->socket, sl, head);
295	got_one++;
296
297	if (sl.len >= (MAXSOCKBUF - MAXITEMLEN))
298	{
299	Send_With_Handling (&pl->contr->socket, &sl);
300
301	sl.reset ();
302	sl.printf ("item%d ", pl->contr->socket.itemcmd);
303	sl << uint32 (0);
304	got_one = 0;
305	}
306	} /* If LOOK_OBJ() */
307	}
308
309	if (got_one)
310	Send_With_Handling (&pl->contr->socket, &sl);
311
312	sl.free ();
313	}
314
315	/**
316	* Sends whole inventory.
317	*/
318	void
319	esrv_send_inventory (object pl, object op)
320	{
321	object *tmp;
322	int got_one = 0;
323
324	SockList sl (MAXSOCKBUF);
325
326	sl.printf ("delinv %d", op->count);
327	Send_With_Handling (&pl->contr->socket, &sl);
328
329	sl.reset ();
330	sl.printf ("item%d ", pl->contr->socket.itemcmd);
331
332	sl << uint32 (op->count);
333
334	for (tmp = op->inv; tmp; tmp = tmp->below)
335	{
336	object *head;
337
338	if (tmp->head)
339	head = tmp->head;
340	else
341	head = tmp;
342
343	if (LOOK_OBJ (head))
344	{
345	add_object_to_socklist (pl->contr->socket, sl, head);
346
347	got_one++;
348
349	/* IT is possible for players to accumulate a huge amount of
350	* items (especially with some of the bags out there) to
351	* overflow the buffer. IF so, send multiple item commands.
352	*/
353	if (sl.len >= (MAXSOCKBUF - MAXITEMLEN))
354	{
355	Send_With_Handling (&pl->contr->socket, &sl);
356	sprintf ((char *) sl.buf, "item%d ", pl->contr->socket.itemcmd);
357	sl.len = strlen ((char *) sl.buf);
358	sl << uint32 (op->count);
359	got_one = 0;
360	}
361	} /* If LOOK_OBJ() */
362	}
363
364	if (got_one)
365	Send_With_Handling (&pl->contr->socket, &sl);
366
367	sl.free ();
368	}
369
370	/**
371	* Updates object op for player pl.
372	*
373	* flags is a list of values to update
374	* to the client (as defined in newclient.h - might as well use the
375	* same value both places.
376	*/
377
378	void
379	esrv_update_item (int flags, object pl, object op)
380	{
381	/* If we have a request to send the player item, skip a few checks. */
382	if (op != pl)
383	{
384	if (!LOOK_OBJ (op))
385	return;
386	/* we remove the check for op->env, because in theory, the object
387	* is hopefully in the same place, so the client should preserve
388	* order.
389	*/
390	}
391
392	if (!QUERY_FLAG (op, FLAG_CLIENT_SENT))
393	{
394	/* FLAG_CLIENT_SENT is debug only. We are using it to see where
395	* this is happening - we can set a breakpoint here in the debugger
396	* and track back the call.
397	*/
398	LOG (llevDebug, "We have not sent item %s (%d)\n", &op->name, op->count);
399	}
400
401	SockList sl (MAXSOCKBUF);
402
403	sl << "upditem "
404	<< uint8 (flags);
405
406	if (op->head)
407	op = op->head;
408
409	sl << uint32 (op->count);
410
411	if (flags & UPD_LOCATION)
412	sl << uint32 (op->env ? op->env->count : 0);
413
414	if (flags & UPD_FLAGS)
415	sl << uint32 (query_flags (op));
416
417	if (flags & UPD_WEIGHT)
418	{
419	sint32 weight = WEIGHT (op);
420
421	sl << uint32 (QUERY_FLAG (op, FLAG_NO_PICK) ? -1 : weight);
422
423	if (pl == op)
424	op->contr->last_weight = weight;
425	}
426
427	if (flags & UPD_FACE)
428	{
429	if (!(pl->contr->socket.faces_sent[op->face->number] & NS_FACESENT_FACE))
430	esrv_send_face (&pl->contr->socket, op->face->number, 0);
431
432	sl << uint32 (op->face->number);
433	}
434
435	if (flags & UPD_NAME)
436	{
437	int len;
438	const char *item_p;
439	char item_n[MAX_BUF];
440
441	if (!op->custom_name)
442	{
443	strncpy (item_n, query_base_name (op, 0), 127);
444	item_n[127] = 0;
445	len = strlen (item_n);
446	item_p = query_base_name (op, 1);
447	}
448	else
449	{
450	strncpy (item_n, op->custom_name, 127);
451	item_n[127] = 0;
452	len = strlen (item_n);
453	item_p = op->custom_name;
454	}
455
456	strncpy (item_n + len + 1, item_p, 127);
457	item_n[254] = 0;
458	len += strlen (item_n + 1 + len) + 1;
459
460	sl << data8 (item_n, len);
461	}
462
463	if (flags & UPD_ANIM)
464	sl << uint16 (op->animation_id);
465
466	if (flags & UPD_ANIMSPEED)
467	{
468	int anim_speed = 0;
469
470	if (QUERY_FLAG (op, FLAG_ANIMATE))
471	{
472	if (op->anim_speed)
473	anim_speed = op->anim_speed;
474	else
475	{
476	if (FABS (op->speed) < 0.001)
477	anim_speed = 255;
478	else if (FABS (op->speed) >= 1.0)
479	anim_speed = 1;
480	else
481	anim_speed = (int) (1.0 / FABS (op->speed));
482	}
483
484	if (anim_speed > 255)
485	anim_speed = 255;
486	}
487
488	sl << uint8 (anim_speed);
489	}
490
491	if (flags & UPD_NROF)
492	sl << uint32 (op->nrof);
493
494	Send_With_Handling (&pl->contr->socket, &sl);
495	sl.free ();
496	}
497
498	/**
499	* Sends item's info to player.
500	*/
501	void
502	esrv_send_item (object pl, object op)
503	{
504	/* If this is not the player object, do some more checks */
505	if (op != pl)
506	{
507	/* We only send 'visibile' objects to the client */
508	if (!LOOK_OBJ (op))
509	return;
510	/* if the item is on the ground, mark that the look needs to
511	* be updated.
512	*/
513	if (!op->env)
514	{
515	pl->contr->socket.update_look = 1;
516	return;
517	}
518	}
519
520	SockList sl (MAXSOCKBUF);
521
522	sl.printf ("item%d ", pl->contr->socket.itemcmd);
523
524	if (op->head)
525	op = op->head;
526
527	sl << uint32 (op->env ? op->env->count : 0);
528
529	add_object_to_socklist (pl->contr->socket, sl, op);
530
531	Send_With_Handling (&pl->contr->socket, &sl);
532	SET_FLAG (op, FLAG_CLIENT_SENT);
533
534	sl.free ();
535	}
536
537	/**
538	* Tells the client to delete an item. Uses the item
539	* command with a -1 location.
540	*/
541
542	void
543	esrv_del_item (player *pl, int tag)
544	{
545	SockList sl (MAXSOCKBUF);
546
547	sl << "delitem "
548	<< uint32 (tag);
549
550	Send_With_Handling (&pl->socket, &sl);
551	sl.free ();
552	}
553
554
555	/*******************************************************************************
556	*
557	* Client has requested us to do something with an object.
558	*
559	******************************************************************************/
560
561	/**
562	* Takes a player and object count (tag) and returns the actual object
563	* pointer, or null if it can't be found.
564	*/
565
566	object *
567	esrv_get_ob_from_count (object *pl, tag_t count)
568	{
569	object op, tmp;
570
571	if (pl->count == count)
572	return pl;
573
574	for (op = pl->inv; op; op = op->below)
575	if (op->count == count)
576	return op;
577	else if (op->type == CONTAINER && pl->container == op)
578	for (tmp = op->inv; tmp; tmp = tmp->below)
579	if (tmp->count == count)
580	return tmp;
581
582	for (op = get_map_ob (pl->map, pl->x, pl->y); op; op = op->above)
583	if (op->head != NULL && op->head->count == count)
584	return op;
585	else if (op->count == count)
586	return op;
587	else if (op->type == CONTAINER && pl->container == op)
588	for (tmp = op->inv; tmp; tmp = tmp->below)
589	if (tmp->count == count)
590	return tmp;
591
592	return NULL;
593	}
594
595
596	/** Client wants to examine some object. So lets do so. */
597	void
598	ExamineCmd (char buf, int len, player pl)
599	{
600	tag_t tag = atoi (buf);
601
602	/* If the high bit is set, player examined a pseudo object. */
603	if (tag & 0x80000000)
604	return;
605
606	object *op = esrv_get_ob_from_count (pl->ob, tag);
607
608	if (!op)
609	{
610	LOG (llevDebug, "Player '%s' tried to examine the unknown object (%ld)\n", &pl->ob->name, tag);
611	return;
612	}
613
614	examine (pl->ob, op);
615	}
616
617	/** Client wants to apply some object. Lets do so. */
618	void
619	ApplyCmd (char buf, int len, player pl)
620	{
621	tag_t tag = atoi (buf);
622
623	/* sort of a hack, but if the player saves and the player then manually
624	* applies a savebed (or otherwise tries to do stuff), we run into trouble.
625	*/
626	if (QUERY_FLAG (pl->ob, FLAG_REMOVED))
627	return;
628
629	/* If the high bit is set, player applied a pseudo object. */
630	if (tag & 0x80000000)
631	{
632	pl->socket.look_position = tag & 0x7fffffff;
633	pl->socket.update_look = 1;
634	return;
635	}
636
637	object *op = esrv_get_ob_from_count (pl->ob, tag);
638
639	if (!op)
640	{
641	LOG (llevDebug, "Player '%s' tried to apply the unknown object (%d)\n", &pl->ob->name, tag);
642	return;
643	}
644
645	player_apply (pl->ob, op, 0, 0);
646	}
647
648	/** Client wants to apply some object. Lets do so. */
649	void
650	LockItem (uint8 data, int len, player pl)
651	{
652	int flag = data[0];
653	tag_t tag = net_uint32 (data + 1);
654	object *op = esrv_get_ob_from_count (pl->ob, tag);
655
656	if (!op)
657	{
658	new_draw_info (NDI_UNIQUE, 0, pl->ob, "Could not find object to lock/unlock");
659	return;
660	}
661
662	if (!flag)
663	CLEAR_FLAG (op, FLAG_INV_LOCKED);
664	else
665	SET_FLAG (op, FLAG_INV_LOCKED);
666
667	esrv_update_item (UPD_FLAGS, pl->ob, op);
668	}
669
670	/** Client wants to apply some object. Lets do so. */
671	void
672	MarkItem (uint8 * data, int len, player *pl)
673	{
674	tag_t tag = net_uint32 (data);
675	object *op = esrv_get_ob_from_count (pl->ob, tag);
676
677	if (!op)
678	{
679	new_draw_info (NDI_UNIQUE, 0, pl->ob, "Could not find object to mark");
680	return;
681	}
682
683	pl->mark = op;
684	new_draw_info_format (NDI_UNIQUE, 0, pl->ob, "Marked item %s", query_name (op));
685	}
686
687	/**
688	* look_at prints items on the specified square.
689	*
690	* [ removed EARTHWALL check and added check for containers inventory.
691	* Tero.Haatanen@lut.fi ]
692	*/
693	void
694	look_at (object *op, int dx, int dy)
695	{
696	object *tmp;
697	int flag = 0;
698	sint16 x, y;
699	maptile *m;
700
701	x = op->x + dx;
702	y = op->y + dy;
703
704	if (out_of_map (op->map, x, y))
705	return;
706
707	m = get_map_from_coord (op->map, &x, &y);
708	if (!m)
709	return;
710
711	for (tmp = get_map_ob (m, x, y); tmp != NULL && tmp->above != NULL; tmp = tmp->above);
712
713	for (; tmp != NULL; tmp = tmp->below)
714	{
715	if (tmp->invisible && !QUERY_FLAG (op, FLAG_WIZ))
716	continue;
717
718	if (!flag)
719	{
720	if (dx \|\| dy)
721	new_draw_info (NDI_UNIQUE, 0, op, "There you see:");
722	else
723	{
724	clear_win_info (op);
725	new_draw_info (NDI_UNIQUE, 0, op, "You see:");
726	}
727	flag = 1;
728	}
729
730	if (QUERY_FLAG (op, FLAG_WIZ))
731	new_draw_info_format (NDI_UNIQUE, 0, op, "- %s (%d).", query_name (tmp), tmp->count);
732	else
733	new_draw_info_format (NDI_UNIQUE, 0, op, "- %s.", query_name (tmp));
734
735	if (((tmp->inv != NULL \|\| (tmp->head && tmp->head->inv)) &&
736	(tmp->type != CONTAINER && tmp->type != FLESH)) \|\| QUERY_FLAG (op, FLAG_WIZ))
737	inventory (op, tmp->head == NULL ? tmp : tmp->head);
738
739	if (QUERY_FLAG (tmp, FLAG_IS_FLOOR) && !QUERY_FLAG (op, FLAG_WIZ)) /* don't continue under the floor */
740	break;
741	}
742
743	if (!flag)
744	{
745	if (dx \|\| dy)
746	new_draw_info (NDI_UNIQUE, 0, op, "You see nothing there.");
747	else
748	new_draw_info (NDI_UNIQUE, 0, op, "You see nothing.");
749	}
750	}
751
752
753
754	/** Client wants to look at some object. Lets do so. */
755	void
756	LookAt (char buf, int len, player pl)
757	{
758	int dx, dy;
759	char *cp;
760
761	dx = atoi (buf);
762	if (!(cp = strchr (buf, ' ')))
763	{
764	return;
765	}
766	dy = atoi (cp);
767
768	if (FABS (dx) > pl->socket.mapx / 2 \|\| FABS (dy) > pl->socket.mapy / 2)
769	return;
770
771	if (pl->blocked_los[dx + pl->socket.mapx / 2][dy + pl->socket.mapy / 2])
772	return;
773
774	look_at (pl->ob, dx, dy);
775	}
776
777	/** Move an object to a new location */
778	void
779	esrv_move_object (object *pl, tag_t to, tag_t tag, long nrof)
780	{
781	object op, env;
782
783	op = esrv_get_ob_from_count (pl, tag);
784	if (!op)
785	{
786	LOG (llevDebug, "Player '%s' tried to move an unknown object (%ld)\n", &pl->name, tag);
787	return;
788	}
789
790	if (!to)
791	{ /* drop it to the ground */
792	if (op->map && !op->env)
793	return;
794
795	/* If it is an active container, then we should drop all objects
796	* in the container and not the container itself.
797	*/
798	if (op->inv && QUERY_FLAG (op, FLAG_APPLIED))
799	{
800	object current, next;
801
802	for (current = op->inv; current != NULL; current = next)
803	{
804	next = current->below;
805	drop_object (pl, current, 0);
806	}
807
808	esrv_update_item (UPD_WEIGHT, pl, op);
809	}
810	else
811	{
812	drop_object (pl, op, nrof);
813	}
814	return;
815	}
816	else if (to == pl->count)
817	{ /* pick it up to the inventory */
818	/* return if player has already picked it up */
819	if (op->env == pl)
820	return;
821
822	pl->contr->count = nrof;
823	pick_up (pl, op);
824	return;
825	}
826
827	env = esrv_get_ob_from_count (pl, to);
828	if (!env)
829	{
830	LOG (llevDebug, "Player '%s' tried to move object to the unknown location (%d)\n", &pl->name, to);
831	return;
832	}
833
834	/* put_object_in_sack presumes that necessary sanity checking
835	* has already been done (eg, it can be picked up and fits in
836	* in a sack, so check for those things. We should also check
837	* an make sure env is in fact a container for that matter.
838	*/
839	if (env->type == CONTAINER && can_pick (pl, op) && sack_can_hold (pl, env, op, nrof))
840	{
841	put_object_in_sack (pl, env, op, nrof);
842	}
843	}
844