server/socket/item.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 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>
 */

/**
 * \file
 * Client/server logic.
 *
 * \date 2003-12-02
 *
 * This contains 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>
#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 sent to client.
 */
static unsigned int
query_flags (object *op)
{
  unsigned int flags = 0;

  if (op->flag [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->is_open_container ())
    flags |= F_OPEN;

  if (op->flag [FLAG_KNOWN_CURSED])
    {
      if (op->flag [FLAG_DAMNED])
        flags |= F_DAMNED;
      else if (op->flag [FLAG_CURSED])
        flags |= F_CURSED;
    }

  if (op->flag [FLAG_KNOWN_MAGICAL] && !op->flag [FLAG_IDENTIFIED])
    flags |= F_MAGIC;
  if (op->flag [FLAG_UNPAID])
    flags |= F_UNPAID;
  if (op->flag [FLAG_INV_LOCKED])
    flags |= F_LOCKED;

  return flags;
}

/* Used in the send_look to put object head into packet
 * 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 (client &ns, packet &sl, object *head)
{
  int flags = query_flags (head);

  if (head->flag [FLAG_NO_PICK])
    flags |= F_NOPICK;

  ns.send_face (head->face, -50);

  if (head->flag [FLAG_ANIMATE] && !ns.anims_sent[head->animation_id])
    ns.send_animation (head->animation_id);

  sl << uint32 (head->count)
     << uint32 (flags)
     << uint32 (head->flag [FLAG_NO_PICK] ? -1 : head->client_weight ())
     << uint32 (head->face);

  if (!head->custom_name)
    {
      const char *name;
      uint8 *len = sl.cur++; // patch up length later

      name = query_base_name (head, 0); sl << data_n (name, min (127, strlen (name)));
      sl << uint8 (0);
      name = query_base_name (head, 1); sl << data_n (name, min (127, strlen (name)));

      *len = sl.cur - len - 1;
    }
  else
    {
      int len = min (127, head->custom_name.length ());

      sl << uint8 (len * 2 + 1)
         << data_n (head->custom_name, len)
         << uint8 (0)
         << data_n (head->custom_name, len);
    }

  sl << uint16 (head->animation_id);

  int anim_speed = !head->flag [FLAG_ANIMATE] ? 0
                 : head->anim_speed           ? clamp (head->anim_speed, 1, 255)
                 :                              1. / clamp (head->speed, 1./255., 1./1.);

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

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

static faceidx
need_face_now (player *pl, const char *name)
{
  faceidx face = face_find (name, empty_face);

  pl->ns->send_face (face, -50);
  pl->ns->flush_fx ();

  return face;
}

#define FINGER_UP   "finger_up.x11"
#define FINGER_DOWN "finger_down.x11"

/**
 * 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 (player *pl)
{
  object *ob = pl->ob;

  if (!pl->ns->update_look)
    {
      LOG (llevDebug, "esrv_draw_look called when update_look was not set (player %s)\n", &ob->name);
      return;
    }

  if (pl->ns->need_delinv0)
    {
      pl->ns->need_delinv0 = 0;
      pl->ns->send_packet ("delinv 0");
    }

  if (pl->run_on)
    return;

  pl->ns->update_look  = 0;
  pl->ns->need_delinv0 = 1;

  if (ob->flag [FLAG_REMOVED]
      || !ob->map
      || ob->map->state != MAP_ACTIVE
      || out_of_map (ob->map, ob->x, ob->y))
    return;

  packet sl;
  sl.printf ("item%d ", pl->ns->itemcmd);

  sl << uint32 (0);

  int start_pos = pl->ns->look_position;
  bool dirty = false;

  mapspace &ms = ob->ms ();

  // manage a ring buffer of the "last FLOORBOX_PAGESIZE" items and
  // start from the top
  object *items [FLOORBOX_PAGESIZE];
  int item_idx = 0, item_cnt = 0;
  int pos = 0;

  // find our items by walking down
  object *item = ms.top;

  for (; item && item_cnt < FLOORBOX_PAGESIZE; item = item->below)
    {
      if (!item->client_visible ())
        continue;

      if (++pos < start_pos)
        continue;

      // record item
      items [item_idx] = item; item_idx = item_idx < FLOORBOX_PAGESIZE ? item_idx + 1 : 0;
      item_cnt++;

      // stop at first floor
      if (item->flag [FLAG_IS_FLOOR])
        {
          // we are finished, don't append "next group of items"
          // by setting item to ms.bot it becomes zero which is checked after the while loop
          item = ms.bot;
        }
    }

  // see if there are more if we cared - we ignore invisible objects
  if (item)
    {
      /* 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 | (start_pos + FLOORBOX_PAGESIZE))
         << uint32 (0)
         << uint32 ((uint32) - 1)
         << uint32 (need_face_now (pl, FINGER_DOWN))
         << data8  ("Apply this to see the items below")
         << uint16 (0)
         << uint8  (0)
         << uint32 (0);

      if (pl->ns->itemcmd == 2)
        sl << uint16 (0);

      dirty = true;
    }

  // now send out all items in the ring buffer in reverse order
  while (item_cnt)
    {
      --item_cnt;
      item_idx = (item_idx ? item_idx : FLOORBOX_PAGESIZE) - 1;
      object *item = items [item_idx];

      add_object_to_socklist (*pl->ns, sl, item->head_ ());

      dirty = true;

      // if packet got too large, send it and begin a new one
      if (sl.length () > MAXSOCKBUF - MAXITEMLEN)
        {
          pl->ns->flush_fx ();
          pl->ns->send_packet (sl);

          sl.reset ();
          sl.printf ("item%d ", pl->ns->itemcmd);
          sl << uint32 (0);

          dirty = false;
        }
    }
  
  if (start_pos)
    {
      sl << uint32 (0x80000000 | (start_pos - FLOORBOX_PAGESIZE))
         << uint32 (0)
         << sint32 (-1)
         << uint32 (need_face_now (pl, FINGER_UP))
         << data8  ("Apply this to see the items higher up")
         << uint16 (0)
         << uint8  (0)
         << uint32 (0);

      if (pl->ns->itemcmd == 2)
        sl << uint16 (0);

      dirty = true;
    }

  if (dirty)
    {
      pl->ns->flush_fx ();
      pl->ns->send_packet (sl);
    }
}

/**
 * Sends whole inventory.
 */
void
esrv_send_inventory (object *pl, object *op)
{
  if (!pl->contr->ns)//D
    return;

  int got_one = 0;

  pl->contr->ns->send_packet_printf ("delinv %d", op->count);

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

  sl << uint32 (op->count);

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

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

      if (head->client_visible ())
        {
          add_object_to_socklist (*pl->contr->ns, 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.length () > MAXSOCKBUF - MAXITEMLEN)
            {
              pl->contr->ns->flush_fx ();
              pl->contr->ns->send_packet (sl);

              sl.reset ();
              sl.printf ("item%d ", pl->contr->ns->itemcmd);
              sl << uint32 (op->count);
              got_one = 0;
            }
        }
    }

  if (got_one)
    {
      pl->contr->ns->flush_fx ();
      pl->contr->ns->send_packet (sl);
    }
}

/**
 * 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 && !op->client_visible ())
    return;

  client *ns = pl->contr->ns;
  if (!ns)
    return;

  packet sl ("upditem");

  sl << uint8 (flags);

  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 = op->client_weight ();

      if (op == pl)
        ns->last_weight = weight;

      sl << uint32 (weight);
    }

  if (flags & UPD_FACE)
    {
      ns->send_face (op->face, -50);
      ns->flush_fx ();
      sl << uint32 (op->face);
    }

  if (flags & UPD_NAME)
    {
      int len;
      const char *item_p;
      char item_n[127 * 2];

      if (!op->custom_name)
        {
          len = assign (item_n, query_base_name (op, 0), 127);
          item_p = query_base_name (op, 1);
        }
      else
        {
          len = assign (item_n, &op->custom_name, 127);
          item_p = &op->custom_name;
        }

      len += assign (item_n + len, item_p, 127);

      sl << data8 (item_n, len);
    }

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

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

      if (op->flag [FLAG_ANIMATE])
        {
          if (op->anim_speed)
            anim_speed = op->anim_speed;
          else
            {
              if (op->speed < 0.001)
                anim_speed = 255;
              else if (op->speed >= 1.0)
                anim_speed = 1;
              else
                anim_speed = 1. / op->speed;
            }

          if (anim_speed > 255)
            anim_speed = 255;
        }

      sl << uint8  (anim_speed);
    }

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

  pl->contr->ns->send_packet (sl);
}

/**
 * Sends item's info to player.
 */
void
esrv_send_item (object *pl, object *op)
{
  if (!pl->contr->ns)
    return;

  /* We only send 'visible' objects to the client, and sometimes the player */
  if (!op->client_visible () && op->type != PLAYER)
    return;

  packet sl;

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

  op = op->head_ ();

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

  add_object_to_socklist (*pl->contr->ns, sl, op);

  pl->contr->ns->flush_fx ();
  pl->contr->ns->send_packet (sl);
}

/**
 * Tells the client to delete an item.
 */
void
esrv_del_item (player *pl, int tag)
{
  if (!pl->ns)
    return;

  packet sl ("delitem");

  sl << uint32 (tag);

  pl->ns->send_packet (sl);
}


/*******************************************************************************
 *
 * 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.
 */
static object *
esrv_get_ob_from_count (object *pl, tag_t count)
{
  if (pl->count == count)
    return pl;

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

  for (object *op = GET_MAP_OB (pl->map, pl->x, pl->y); op; op = op->above)
    if (op->head && op->head->count == count)
      return op;
    else if (op->count == count)
      return op;
    else if (op->type == CONTAINER && pl->container_ () == op)
      for (object *tmp = op->inv; tmp; tmp = tmp->below)
        if (tmp->count == count)
          return tmp;

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

  return 0;
}

/** 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 applied a pseudo object. */
  if (tag & 0x80000000)
    {
      pl->ns->look_position = tag & 0x7fffffff;
      pl->ns->floorbox_update ();
      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 examine some object.  So lets do so. */
void
ExCmd (char *buf, int len, player *pl)
{
  tag_t tag = atoi (buf);

  if (object *op = esrv_get_ob_from_count (pl->ob, tag))
    {
      std::string s = op->describe (pl->ob);

      packet sl ("ex");
      sl << ber32 (tag)
         << data_n (*pl->expand_cfpod (s.c_str ()));

      pl->ns->send_packet (sl);
    }
}

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

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

  // the object might be legally gone already
  if (object *op = esrv_get_ob_from_count (pl->ob, tag))
    pl->ob->apply (op, AP_TOGGLE);
}

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

  if (!op)
    {
      pl->failmsgf ("Could not find object %d to lock/unlock", tag);
      return;
    }

  if (!flag)
    op->clr_flag (FLAG_INV_LOCKED);
  else
    op->set_flag (FLAG_INV_LOCKED);

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

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

  if (!op)
    {
      pl->failmsgf ("Could not find object %d to mark", tag);
      return;
    }

  pl->mark = op;
  pl->ob->statusmsg (format ("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 ]
 */
static void
look_at (player *pl, int dx, int dy)
{
  dynbuf_text &buf = msg_dynbuf; buf.clear ();
  object *ob = pl->ob;

  if (!pl->observe->map)
    return;

  bool wiz = ob->flag [FLAG_WIZ] || ob->flag [FLAG_WIZLOOK];

  mapxy pos (pl->observe);
  pos.move (dx, dy);

  if (wiz)
    {
      if (pos.normalise ())
        {
          mapspace &ms = *pos;
          ms.update ();

          buf.printf (" map: %s%+d%+d (%+d%+d)\n"
                      " smell %u/%u; flags %x; light %d; block %x; slow %x; on %x; off %x; items %d, volume %lld\n\n",
                      &pos.m->path, pos.x, pos.y, dx, dy,
                      (unsigned int)ms.smell, (unsigned int)mapspace::smellcount, ms.flags (), ms.light,
                      ms.move_block, ms.move_slow, ms.move_on, ms.move_off, (int)ms.items (), (long long)ms.volume ()
                     );
        }
      else
        buf << "off-map\n\n";
    }

  int darkness = pl->blocked_los (dx, dy);

  if (darkness == LOS_BLOCKED)
    buf << "You cannot see that place from your position. H<Something is in between or it is too far away.>";
  else if (darkness == LOS_MAX)
    buf << "That place is too dark to see anything. H<Move nearer or find better lighting.>";
  else
    {
      if (pos.normalise ())
        for (object *tmp = pos->top; tmp; tmp = tmp->below)
          {
            if (tmp->invisible && !ob->flag [FLAG_WIZ])
              continue;

            if (wiz)
              buf.printf (" - %s (%d) %s\n", query_name (tmp), tmp->count, tmp->uuid.c_str ());
            else
              buf.printf (" - %s.\n", query_name (tmp));

            object *head = tmp->head_ ();

            if (head->inv)
              if ((head->type != CONTAINER && head->type != FLESH)
                  || ob->flag [FLAG_WIZ])
                buf << head->query_inventory (ob, "   ");

            if (tmp->flag [FLAG_IS_FLOOR] && !wiz)        /* don't continue under the floor */
              break;
          }
    }

  if (buf.empty ())
    buf << "You see nothing there.";

  pl->infobox (MSG_CHANNEL ("lookat"), buf);
}

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

  int dx = atoi (buf);
  if (!(cp = strchr (buf, ' ')))
    return;

  int dy = atoi (cp);

  look_at (pl, 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 = 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 && op->flag [FLAG_APPLIED])
        {
          int cnt = MAX_ITEM_PER_ACTION;

          for (object *current = op->inv; current && cnt--; )
            {
              object *next = current->below;
              drop_object (pl, current, 0);
              current = next;
            }

          if (cnt <= 0)
            op->failmsg ("Only dropped some items, can't drop that many items at once.");
        }
      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;
    }

  object *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:	1.105
Committed:	Wed Nov 14 23:24:27 2018 UTC (5 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.104:	+6 -5 lines
Log Message:	c++17
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2018 Marc Alexander Lehmann / the Deliantra team
5	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
7	* Copyright (©) 1992 Frank Tore Johansen
8	*
9	* Deliantra is free software: you can redistribute it and/or modify it under
10	* the terms of the Affero GNU General Public License as published by the
11	* Free Software Foundation, either version 3 of the License, or (at your
12	* option) any later version.
13	*
14	* This program is distributed in the hope that it will be useful,
15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17	* GNU General Public License for more details.
18	*
19	* You should have received a copy of the Affero GNU General Public License
20	* and the GNU General Public License along with this program. If not, see
21	* <http://www.gnu.org/licenses/>.
22	*
23	* The authors can be reached via e-mail to <support@deliantra.net>
24	*/
25
26	/**
27	* \file
28	* Client/server logic.
29	*
30	* \date 2003-12-02
31	*
32	* This contains item logic for client/server. It doesn't contain
33	* the actual commands that send the data, but does contain
34	* the logic for what items should be sent.
35	*/
36
37	#include <global.h>
38	#include <object.h>
39	#include <sproto.h>
40
41	/** This is the maximum number of bytes we expect any one item to take up */
42	#define MAXITEMLEN 300
43
44	/*******************************************************************************
45	*
46	* Functions related to sending object data to the client.
47	*
48	******************************************************************************/
49
50	/**
51	* This is a similar to query_name, but returns flags
52	* to be sent to client.
53	*/
54	static unsigned int
55	query_flags (object *op)
56	{
57	unsigned int flags = 0;
58
59	if (op->flag [FLAG_APPLIED])
60	switch (op->type)
61	{
62	case BOW:
63	case WAND:
64	case ROD:
65	case HORN:
66	flags = a_readied;
67	break;
68	case WEAPON:
69	flags = a_wielded;
70	break;
71	case SKILL:
72	case ARMOUR:
73	case HELMET:
74	case SHIELD:
75	case RING:
76	case BOOTS:
77	case GLOVES:
78	case AMULET:
79	case GIRDLE:
80	case BRACERS:
81	case CLOAK:
82	flags = a_worn;
83	break;
84	case CONTAINER:
85	flags = a_active;
86	break;
87	default:
88	flags = a_applied;
89	break;
90	}
91
92	if (op->is_open_container ())
93	flags \|= F_OPEN;
94
95	if (op->flag [FLAG_KNOWN_CURSED])
96	{
97	if (op->flag [FLAG_DAMNED])
98	flags \|= F_DAMNED;
99	else if (op->flag [FLAG_CURSED])
100	flags \|= F_CURSED;
101	}
102
103	if (op->flag [FLAG_KNOWN_MAGICAL] && !op->flag [FLAG_IDENTIFIED])
104	flags \|= F_MAGIC;
105	if (op->flag [FLAG_UNPAID])
106	flags \|= F_UNPAID;
107	if (op->flag [FLAG_INV_LOCKED])
108	flags \|= F_LOCKED;
109
110	return flags;
111	}
112
113	/* Used in the send_look to put object head into packet
114	* sl for socket ns. Need socket to know if we need to send
115	* animation of face to the client.
116	*/
117	static void
118	add_object_to_socklist (client &ns, packet &sl, object *head)
119	{
120	int flags = query_flags (head);
121
122	if (head->flag [FLAG_NO_PICK])
123	flags \|= F_NOPICK;
124
125	ns.send_face (head->face, -50);
126
127	if (head->flag [FLAG_ANIMATE] && !ns.anims_sent[head->animation_id])
128	ns.send_animation (head->animation_id);
129
130	sl << uint32 (head->count)
131	<< uint32 (flags)
132	<< uint32 (head->flag [FLAG_NO_PICK] ? -1 : head->client_weight ())
133	<< uint32 (head->face);
134
135	if (!head->custom_name)
136	{
137	const char *name;
138	uint8 *len = sl.cur++; // patch up length later
139
140	name = query_base_name (head, 0); sl << data_n (name, min (127, strlen (name)));
141	sl << uint8 (0);
142	name = query_base_name (head, 1); sl << data_n (name, min (127, strlen (name)));
143
144	*len = sl.cur - len - 1;
145	}
146	else
147	{
148	int len = min (127, head->custom_name.length ());
149
150	sl << uint8 (len * 2 + 1)
151	<< data_n (head->custom_name, len)
152	<< uint8 (0)
153	<< data_n (head->custom_name, len);
154	}
155
156	sl << uint16 (head->animation_id);
157
158	int anim_speed = !head->flag [FLAG_ANIMATE] ? 0
159	: head->anim_speed ? clamp (head->anim_speed, 1, 255)
160	: 1. / clamp (head->speed, 1./255., 1./1.);
161
162	sl << uint8 (anim_speed)
163	<< uint32 (head->nrof);
164
165	if (ns.itemcmd == 2)
166	sl << uint16 (head->client_type);
167	}
168
169	static faceidx
170	need_face_now (player pl, const char name)
171	{
172	faceidx face = face_find (name, empty_face);
173
174	pl->ns->send_face (face, -50);
175	pl->ns->flush_fx ();
176
177	return face;
178	}
179
180	#define FINGER_UP "finger_up.x11"
181	#define FINGER_DOWN "finger_down.x11"
182
183	/**
184	* Send the look window. Don't need to do animations here
185	* This sends all the faces to the client, not just updates. This is
186	* because object ordering would otherwise be inconsistent.
187	*/
188	void
189	esrv_draw_look (player *pl)
190	{
191	object *ob = pl->ob;
192
193	if (!pl->ns->update_look)
194	{
195	LOG (llevDebug, "esrv_draw_look called when update_look was not set (player %s)\n", &ob->name);
196	return;
197	}
198
199	if (pl->ns->need_delinv0)
200	{
201	pl->ns->need_delinv0 = 0;
202	pl->ns->send_packet ("delinv 0");
203	}
204
205	if (pl->run_on)
206	return;
207
208	pl->ns->update_look = 0;
209	pl->ns->need_delinv0 = 1;
210
211	if (ob->flag [FLAG_REMOVED]
212	\|\| !ob->map
213	\|\| ob->map->state != MAP_ACTIVE
214	\|\| out_of_map (ob->map, ob->x, ob->y))
215	return;
216
217	packet sl;
218	sl.printf ("item%d ", pl->ns->itemcmd);
219
220	sl << uint32 (0);
221
222	int start_pos = pl->ns->look_position;
223	bool dirty = false;
224
225	mapspace &ms = ob->ms ();
226
227	// manage a ring buffer of the "last FLOORBOX_PAGESIZE" items and
228	// start from the top
229	object *items [FLOORBOX_PAGESIZE];
230	int item_idx = 0, item_cnt = 0;
231	int pos = 0;
232
233	// find our items by walking down
234	object *item = ms.top;
235
236	for (; item && item_cnt < FLOORBOX_PAGESIZE; item = item->below)
237	{
238	if (!item->client_visible ())
239	continue;
240
241	if (++pos < start_pos)
242	continue;
243
244	// record item
245	items [item_idx] = item; item_idx = item_idx < FLOORBOX_PAGESIZE ? item_idx + 1 : 0;
246	item_cnt++;
247
248	// stop at first floor
249	if (item->flag [FLAG_IS_FLOOR])
250	{
251	// we are finished, don't append "next group of items"
252	// by setting item to ms.bot it becomes zero which is checked after the while loop
253	item = ms.bot;
254	}
255	}
256
257	// see if there are more if we cared - we ignore invisible objects
258	if (item)
259	{
260	/* What we basically do is make a 'fake' object - when the user applies it,
261	* we notice the special tag the object has, and act accordingly.
262	*/
263	sl << uint32 (0x80000000 \| (start_pos + FLOORBOX_PAGESIZE))
264	<< uint32 (0)
265	<< uint32 ((uint32) - 1)
266	<< uint32 (need_face_now (pl, FINGER_DOWN))
267	<< data8 ("Apply this to see the items below")
268	<< uint16 (0)
269	<< uint8 (0)
270	<< uint32 (0);
271
272	if (pl->ns->itemcmd == 2)
273	sl << uint16 (0);
274
275	dirty = true;
276	}
277
278	// now send out all items in the ring buffer in reverse order
279	while (item_cnt)
280	{
281	--item_cnt;
282	item_idx = (item_idx ? item_idx : FLOORBOX_PAGESIZE) - 1;
283	object *item = items [item_idx];
284
285	add_object_to_socklist (*pl->ns, sl, item->head_ ());
286
287	dirty = true;
288
289	// if packet got too large, send it and begin a new one
290	if (sl.length () > MAXSOCKBUF - MAXITEMLEN)
291	{
292	pl->ns->flush_fx ();
293	pl->ns->send_packet (sl);
294
295	sl.reset ();
296	sl.printf ("item%d ", pl->ns->itemcmd);
297	sl << uint32 (0);
298
299	dirty = false;
300	}
301	}
302
303	if (start_pos)
304	{
305	sl << uint32 (0x80000000 \| (start_pos - FLOORBOX_PAGESIZE))
306	<< uint32 (0)
307	<< sint32 (-1)
308	<< uint32 (need_face_now (pl, FINGER_UP))
309	<< data8 ("Apply this to see the items higher up")
310	<< uint16 (0)
311	<< uint8 (0)
312	<< uint32 (0);
313
314	if (pl->ns->itemcmd == 2)
315	sl << uint16 (0);
316
317	dirty = true;
318	}
319
320	if (dirty)
321	{
322	pl->ns->flush_fx ();
323	pl->ns->send_packet (sl);
324	}
325	}
326
327	/**
328	* Sends whole inventory.
329	*/
330	void
331	esrv_send_inventory (object pl, object op)
332	{
333	if (!pl->contr->ns)//D
334	return;
335
336	int got_one = 0;
337
338	pl->contr->ns->send_packet_printf ("delinv %d", op->count);
339
340	packet sl;
341	sl.printf ("item%d ", pl->contr->ns->itemcmd);
342
343	sl << uint32 (op->count);
344
345	for (object *tmp = op->inv; tmp; tmp = tmp->below)
346	{
347	object *head;
348
349	if (tmp->head)
350	head = tmp->head;
351	else
352	head = tmp;
353
354	if (head->client_visible ())
355	{
356	add_object_to_socklist (*pl->contr->ns, sl, head);
357
358	got_one++;
359
360	/* IT is possible for players to accumulate a huge amount of
361	* items (especially with some of the bags out there) to
362	* overflow the buffer. IF so, send multiple item commands.
363	*/
364	if (sl.length () > MAXSOCKBUF - MAXITEMLEN)
365	{
366	pl->contr->ns->flush_fx ();
367	pl->contr->ns->send_packet (sl);
368
369	sl.reset ();
370	sl.printf ("item%d ", pl->contr->ns->itemcmd);
371	sl << uint32 (op->count);
372	got_one = 0;
373	}
374	}
375	}
376
377	if (got_one)
378	{
379	pl->contr->ns->flush_fx ();
380	pl->contr->ns->send_packet (sl);
381	}
382	}
383
384	/**
385	* Updates object op for player pl.
386	*
387	* flags is a list of values to update
388	* to the client (as defined in newclient.h - might as well use the
389	* same value both places.
390	*/
391	void
392	esrv_update_item (int flags, object pl, object op)
393	{
394	/* If we have a request to send the player item, skip a few checks. */
395	if (op != pl && !op->client_visible ())
396	return;
397
398	client *ns = pl->contr->ns;
399	if (!ns)
400	return;
401
402	packet sl ("upditem");
403
404	sl << uint8 (flags);
405
406	op = op->head_ ();
407
408	sl << uint32 (op->count);
409
410	if (flags & UPD_LOCATION)
411	sl << uint32 (op->env ? op->env->count : 0);
412
413	if (flags & UPD_FLAGS)
414	sl << uint32 (query_flags (op));
415
416	if (flags & UPD_WEIGHT)
417	{
418	sint32 weight = op->client_weight ();
419
420	if (op == pl)
421	ns->last_weight = weight;
422
423	sl << uint32 (weight);
424	}
425
426	if (flags & UPD_FACE)
427	{
428	ns->send_face (op->face, -50);
429	ns->flush_fx ();
430	sl << uint32 (op->face);
431	}
432
433	if (flags & UPD_NAME)
434	{
435	int len;
436	const char *item_p;
437	char item_n[127 * 2];
438
439	if (!op->custom_name)
440	{
441	len = assign (item_n, query_base_name (op, 0), 127);
442	item_p = query_base_name (op, 1);
443	}
444	else
445	{
446	len = assign (item_n, &op->custom_name, 127);
447	item_p = &op->custom_name;
448	}
449
450	len += assign (item_n + len, item_p, 127);
451
452	sl << data8 (item_n, len);
453	}
454
455	if (flags & UPD_ANIM)
456	sl << uint16 (op->animation_id);
457
458	if (flags & UPD_ANIMSPEED)
459	{
460	int anim_speed = 0;
461
462	if (op->flag [FLAG_ANIMATE])
463	{
464	if (op->anim_speed)
465	anim_speed = op->anim_speed;
466	else
467	{
468	if (op->speed < 0.001)
469	anim_speed = 255;
470	else if (op->speed >= 1.0)
471	anim_speed = 1;
472	else
473	anim_speed = 1. / op->speed;
474	}
475
476	if (anim_speed > 255)
477	anim_speed = 255;
478	}
479
480	sl << uint8 (anim_speed);
481	}
482
483	if (flags & UPD_NROF)
484	sl << uint32 (op->nrof);
485
486	pl->contr->ns->send_packet (sl);
487	}
488
489	/**
490	* Sends item's info to player.
491	*/
492	void
493	esrv_send_item (object pl, object op)
494	{
495	if (!pl->contr->ns)
496	return;
497
498	/* We only send 'visible' objects to the client, and sometimes the player */
499	if (!op->client_visible () && op->type != PLAYER)
500	return;
501
502	packet sl;
503
504	sl.printf ("item%d ", pl->contr->ns->itemcmd);
505
506	op = op->head_ ();
507
508	sl << uint32 (op->env ? op->env->count : 0);
509
510	add_object_to_socklist (*pl->contr->ns, sl, op);
511
512	pl->contr->ns->flush_fx ();
513	pl->contr->ns->send_packet (sl);
514	}
515
516	/**
517	* Tells the client to delete an item.
518	*/
519	void
520	esrv_del_item (player *pl, int tag)
521	{
522	if (!pl->ns)
523	return;
524
525	packet sl ("delitem");
526
527	sl << uint32 (tag);
528
529	pl->ns->send_packet (sl);
530	}
531
532
533	/*******************************************************************************
534	*
535	* Client has requested us to do something with an object.
536	*
537	******************************************************************************/
538
539	/**
540	* Takes a player and object count (tag) and returns the actual object
541	* pointer, or null if it can't be found.
542	*/
543	static object *
544	esrv_get_ob_from_count (object *pl, tag_t count)
545	{
546	if (pl->count == count)
547	return pl;
548
549	for (object *op = pl->inv; op; op = op->below)
550	if (op->count == count)
551	return op;
552	else if (op->type == CONTAINER && pl->container_ () == op)
553	for (object *tmp = op->inv; tmp; tmp = tmp->below)
554	if (tmp->count == count)
555	return tmp;
556
557	for (object *op = GET_MAP_OB (pl->map, pl->x, pl->y); op; op = op->above)
558	if (op->head && op->head->count == count)
559	return op;
560	else if (op->count == count)
561	return op;
562	else if (op->type == CONTAINER && pl->container_ () == op)
563	for (object *tmp = op->inv; tmp; tmp = tmp->below)
564	if (tmp->count == count)
565	return tmp;
566
567	#if 0
568	/* If the high bit is set, player examined a pseudo object. */
569	if (count & 0x80000000)
570	return 0;
571	#endif
572
573	return 0;
574	}
575
576	/** Client wants to examine some object. So lets do so. */
577	void
578	ExamineCmd (char buf, int len, player pl)
579	{
580	tag_t tag = atoi (buf);
581
582	/* If the high bit is set, player applied a pseudo object. */
583	if (tag & 0x80000000)
584	{
585	pl->ns->look_position = tag & 0x7fffffff;
586	pl->ns->floorbox_update ();
587	return;
588	}
589
590	object *op = esrv_get_ob_from_count (pl->ob, tag);
591
592	if (!op)
593	{
594	LOG (llevDebug, "Player '%s' tried to examine the unknown object (%ld)\n", &pl->ob->name, tag);
595	return;
596	}
597
598	examine (pl->ob, op);
599	}
600
601	/** Client wants to examine some object. So lets do so. */
602	void
603	ExCmd (char buf, int len, player pl)
604	{
605	tag_t tag = atoi (buf);
606
607	if (object *op = esrv_get_ob_from_count (pl->ob, tag))
608	{
609	std::string s = op->describe (pl->ob);
610
611	packet sl ("ex");
612	sl << ber32 (tag)
613	<< data_n (*pl->expand_cfpod (s.c_str ()));
614
615	pl->ns->send_packet (sl);
616	}
617	}
618
619	/** Client wants to apply some object. Lets do so. */
620	void
621	ApplyCmd (char buf, int len, player pl)
622	{
623	tag_t tag = atoi (buf);
624
625	/* If the high bit is set, player applied a pseudo object. */
626	if (tag & 0x80000000)
627	{
628	pl->ns->look_position = tag & 0x7fffffff;
629	pl->ns->floorbox_update ();
630	return;
631	}
632
633	// the object might be legally gone already
634	if (object *op = esrv_get_ob_from_count (pl->ob, tag))
635	pl->ob->apply (op, AP_TOGGLE);
636	}
637
638	/** Client wants to lock some object. Lets do so. */
639	void
640	LockItem (char data, int len, player pl)
641	{
642	int flag = data[0];
643	tag_t tag = net_uint32 ((uint8 *)data + 1);
644	object *op = esrv_get_ob_from_count (pl->ob, tag);
645
646	if (!op)
647	{
648	pl->failmsgf ("Could not find object %d to lock/unlock", tag);
649	return;
650	}
651
652	if (!flag)
653	op->clr_flag (FLAG_INV_LOCKED);
654	else
655	op->set_flag (FLAG_INV_LOCKED);
656
657	esrv_update_item (UPD_FLAGS, pl->ob, op);
658	}
659
660	/** Client wants to mark some object. Lets do so. */
661	void
662	MarkItem (char data, int len, player pl)
663	{
664	tag_t tag = net_uint32 ((uint8 *)data);
665	object *op = esrv_get_ob_from_count (pl->ob, tag);
666
667	if (!op)
668	{
669	pl->failmsgf ("Could not find object %d to mark", tag);
670	return;
671	}
672
673	pl->mark = op;
674	pl->ob->statusmsg (format ("Marked item %s", query_name (op)));
675	}
676
677	/**
678	* look_at prints items on the specified square.
679	*
680	* [ removed EARTHWALL check and added check for containers inventory.
681	* Tero.Haatanen@lut.fi ]
682	*/
683	static void
684	look_at (player *pl, int dx, int dy)
685	{
686	dynbuf_text &buf = msg_dynbuf; buf.clear ();
687	object *ob = pl->ob;
688
689	if (!pl->observe->map)
690	return;
691
692	bool wiz = ob->flag [FLAG_WIZ] \|\| ob->flag [FLAG_WIZLOOK];
693
694	mapxy pos (pl->observe);
695	pos.move (dx, dy);
696
697	if (wiz)
698	{
699	if (pos.normalise ())
700	{
701	mapspace &ms = *pos;
702	ms.update ();
703
704	buf.printf (" map: %s%+d%+d (%+d%+d)\n"
705	" smell %u/%u; flags %x; light %d; block %x; slow %x; on %x; off %x; items %d, volume %lld\n\n",
706	&pos.m->path, pos.x, pos.y, dx, dy,
707	(unsigned int)ms.smell, (unsigned int)mapspace::smellcount, ms.flags (), ms.light,
708	ms.move_block, ms.move_slow, ms.move_on, ms.move_off, (int)ms.items (), (long long)ms.volume ()
709	);
710	}
711	else
712	buf << "off-map\n\n";
713	}
714
715	int darkness = pl->blocked_los (dx, dy);
716
717	if (darkness == LOS_BLOCKED)
718	buf << "You cannot see that place from your position. H<Something is in between or it is too far away.>";
719	else if (darkness == LOS_MAX)
720	buf << "That place is too dark to see anything. H<Move nearer or find better lighting.>";
721	else
722	{
723	if (pos.normalise ())
724	for (object *tmp = pos->top; tmp; tmp = tmp->below)
725	{
726	if (tmp->invisible && !ob->flag [FLAG_WIZ])
727	continue;
728
729	if (wiz)
730	buf.printf (" - %s (%d) %s\n", query_name (tmp), tmp->count, tmp->uuid.c_str ());
731	else
732	buf.printf (" - %s.\n", query_name (tmp));
733
734	object *head = tmp->head_ ();
735
736	if (head->inv)
737	if ((head->type != CONTAINER && head->type != FLESH)
738	\|\| ob->flag [FLAG_WIZ])
739	buf << head->query_inventory (ob, " ");
740
741	if (tmp->flag [FLAG_IS_FLOOR] && !wiz) /* don't continue under the floor */
742	break;
743	}
744	}
745
746	if (buf.empty ())
747	buf << "You see nothing there.";
748
749	pl->infobox (MSG_CHANNEL ("lookat"), buf);
750	}
751
752	/** Client wants to look at some object. Lets do so. */
753	void
754	LookAt (char buf, int len, player pl)
755	{
756	char *cp;
757
758	int dx = atoi (buf);
759	if (!(cp = strchr (buf, ' ')))
760	return;
761
762	int dy = atoi (cp);
763
764	look_at (pl, dx, dy);
765	}
766
767	/** Move an object to a new location */
768	void
769	esrv_move_object (object *pl, tag_t to, tag_t tag, long nrof)
770	{
771	object *op = esrv_get_ob_from_count (pl, tag);
772	if (!op)
773	{
774	LOG (llevDebug, "Player '%s' tried to move an unknown object (%ld)\n", &pl->name, tag);
775	return;
776	}
777
778	if (!to)
779	{ /* drop it to the ground */
780	if (op->map && !op->env)
781	return;
782
783	/* If it is an active container, then we should drop all objects
784	* in the container and not the container itself.
785	*/
786	if (op->inv && op->flag [FLAG_APPLIED])
787	{
788	int cnt = MAX_ITEM_PER_ACTION;
789
790	for (object *current = op->inv; current && cnt--; )
791	{
792	object *next = current->below;
793	drop_object (pl, current, 0);
794	current = next;
795	}
796
797	if (cnt <= 0)
798	op->failmsg ("Only dropped some items, can't drop that many items at once.");
799	}
800	else
801	drop_object (pl, op, nrof);
802
803	return;
804	}
805	else if (to == pl->count)
806	{ /* pick it up to the inventory */
807	/* return if player has already picked it up */
808	if (op->env == pl)
809	return;
810
811	pl->contr->count = nrof;
812	pick_up (pl, op);
813	return;
814	}
815
816	object *env = esrv_get_ob_from_count (pl, to);
817	if (!env)
818	{
819	LOG (llevDebug, "Player '%s' tried to move object to the unknown location (%d)\n", &pl->name, to);
820	return;
821	}
822
823	/* put_object_in_sack presumes that necessary sanity checking
824	* has already been done (eg, it can be picked up and fits in
825	* in a sack, so check for those things. We should also check
826	* an make sure env is in fact a container for that matter.
827	*/
828	if (env->type == CONTAINER
829	&& can_pick (pl, op)
830	&& sack_can_hold (pl, env, op, nrof))
831	put_object_in_sack (pl, env, op, nrof);
832	}
833