server/socket/item.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008,2009,2010 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 (name, min (127, strlen (name)));
      sl << uint8 (0);
      name = query_base_name (head, 1); sl << data (name, min (127, strlen (name)));

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

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

  pl->ns->send_packet ("delinv 0");

  if (pl->run_on)
    return;

  pl->ns->update_look = 0;

  if (ob->flag [FLAG_REMOVED]
      || !ob->map
      || ob->map->in_memory != 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 (*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;
    }

  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;
    }

  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->failmsg ("Could not find object to lock/unlock");
      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->failmsg ("Could not find object to mark");
      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:	1.93
Committed:	Sun Apr 11 23:32:10 2010 UTC (14 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.92:	+5 -2 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
6	* Copyright (©) 1992 Frank Tore Johansen
7	*
8	* Deliantra is free software: you can redistribute it and/or modify it under
9	* the terms of the Affero GNU General Public License as published by the
10	* Free Software Foundation, either version 3 of the License, or (at your
11	* option) any later version.
12	*
13	* This program is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.
17	*
18	* You should have received a copy of the Affero GNU General Public License
19	* and the GNU General Public License along with this program. If not, see
20	* <http://www.gnu.org/licenses/>.
21	*
22	* The authors can be reached via e-mail to <support@deliantra.net>
23	*/
24
25	/**
26	* \file
27	* Client/server logic.
28	*
29	* \date 2003-12-02
30	*
31	* This contains item logic for client/server. It doesn't contain
32	* the actual commands that send the data, but does contain
33	* the logic for what items should be sent.
34	*/
35
36	#include <global.h>
37	#include <object.h>
38	#include <sproto.h>
39
40	/** This is the maximum number of bytes we expect any one item to take up */
41	#define MAXITEMLEN 300
42
43	/*******************************************************************************
44	*
45	* Functions related to sending object data to the client.
46	*
47	******************************************************************************/
48
49	/**
50	* This is a similar to query_name, but returns flags
51	* to be sent to client.
52	*/
53	static unsigned int
54	query_flags (object *op)
55	{
56	unsigned int flags = 0;
57
58	if (op->flag [FLAG_APPLIED])
59	switch (op->type)
60	{
61	case BOW:
62	case WAND:
63	case ROD:
64	case HORN:
65	flags = a_readied;
66	break;
67	case WEAPON:
68	flags = a_wielded;
69	break;
70	case SKILL:
71	case ARMOUR:
72	case HELMET:
73	case SHIELD:
74	case RING:
75	case BOOTS:
76	case GLOVES:
77	case AMULET:
78	case GIRDLE:
79	case BRACERS:
80	case CLOAK:
81	flags = a_worn;
82	break;
83	case CONTAINER:
84	flags = a_active;
85	break;
86	default:
87	flags = a_applied;
88	break;
89	}
90
91	if (op->is_open_container ())
92	flags \|= F_OPEN;
93
94	if (op->flag [FLAG_KNOWN_CURSED])
95	{
96	if (op->flag [FLAG_DAMNED])
97	flags \|= F_DAMNED;
98	else if (op->flag [FLAG_CURSED])
99	flags \|= F_CURSED;
100	}
101
102	if (op->flag [FLAG_KNOWN_MAGICAL] && !op->flag [FLAG_IDENTIFIED])
103	flags \|= F_MAGIC;
104	if (op->flag [FLAG_UNPAID])
105	flags \|= F_UNPAID;
106	if (op->flag [FLAG_INV_LOCKED])
107	flags \|= F_LOCKED;
108
109	return flags;
110	}
111
112	/* Used in the send_look to put object head into packet
113	* sl for socket ns. Need socket to know if we need to send
114	* animation of face to the client.
115	*/
116	static void
117	add_object_to_socklist (client &ns, packet &sl, object *head)
118	{
119	int flags = query_flags (head);
120
121	if (head->flag [FLAG_NO_PICK])
122	flags \|= F_NOPICK;
123
124	ns.send_face (head->face, -50);
125
126	if (head->flag [FLAG_ANIMATE] && !ns.anims_sent[head->animation_id])
127	ns.send_animation (head->animation_id);
128
129	sl << uint32 (head->count)
130	<< uint32 (flags)
131	<< uint32 (head->flag [FLAG_NO_PICK] ? -1 : head->client_weight ())
132	<< uint32 (head->face);
133
134	if (!head->custom_name)
135	{
136	const char *name;
137	uint8 *len = sl.cur++; // patch up length later
138
139	name = query_base_name (head, 0); sl << data (name, min (127, strlen (name)));
140	sl << uint8 (0);
141	name = query_base_name (head, 1); sl << data (name, min (127, strlen (name)));
142
143	*len = sl.cur - len - 1;
144	}
145	else
146	{
147	int len = min (head->custom_name.length (), 127);
148
149	sl << uint8 (len * 2 + 1)
150	<< data (head->custom_name, len)
151	<< uint8 (0)
152	<< data (head->custom_name, len);
153	}
154
155	sl << uint16 (head->animation_id);
156
157	int anim_speed = !head->flag [FLAG_ANIMATE] ? 0
158	: head->anim_speed ? clamp (head->anim_speed, 1, 255)
159	: 1. / clamp (head->speed, 1./255., 1./1.);
160
161	sl << uint8 (anim_speed)
162	<< uint32 (head->nrof);
163
164	if (ns.itemcmd == 2)
165	sl << uint16 (head->client_type);
166	}
167
168	static faceidx
169	need_face_now (player pl, const char name)
170	{
171	faceidx face = face_find (name, empty_face);
172
173	pl->ns->send_face (face, -50);
174	pl->ns->flush_fx ();
175
176	return face;
177	}
178
179	#define FINGER_UP "finger_up.x11"
180	#define FINGER_DOWN "finger_down.x11"
181
182	/**
183	* Send the look window. Don't need to do animations here
184	* This sends all the faces to the client, not just updates. This is
185	* because object ordering would otherwise be inconsistent.
186	*/
187	void
188	esrv_draw_look (player *pl)
189	{
190	object *ob = pl->ob;
191
192	if (!pl->ns->update_look)
193	{
194	LOG (llevDebug, "esrv_draw_look called when update_look was not set (player %s)\n", &ob->name);
195	return;
196	}
197
198	pl->ns->send_packet ("delinv 0");
199
200	if (pl->run_on)
201	return;
202
203	pl->ns->update_look = 0;
204
205	if (ob->flag [FLAG_REMOVED]
206	\|\| !ob->map
207	\|\| ob->map->in_memory != MAP_ACTIVE
208	\|\| out_of_map (ob->map, ob->x, ob->y))
209	return;
210
211	packet sl;
212	sl.printf ("item%d ", pl->ns->itemcmd);
213
214	sl << uint32 (0);
215
216	int start_pos = pl->ns->look_position;
217	bool dirty = false;
218
219	mapspace &ms = ob->ms ();
220
221	// manage a ring buffer of the "last FLOORBOX_PAGESIZE" items and
222	// start from the top
223	object *items [FLOORBOX_PAGESIZE];
224	int item_idx = 0, item_cnt = 0;
225	int pos = 0;
226
227	// find our items by walking down
228	object *item = ms.top;
229
230	for (; item && item_cnt < FLOORBOX_PAGESIZE; item = item->below)
231	{
232	if (!item->client_visible ())
233	continue;
234
235	if (++pos < start_pos)
236	continue;
237
238	// record item
239	items [item_idx] = item; item_idx = item_idx < FLOORBOX_PAGESIZE ? item_idx + 1 : 0;
240	item_cnt++;
241
242	// stop at first floor
243	if (item->flag [FLAG_IS_FLOOR])
244	{
245	// we are finished, don't append "next group of items"
246	// by setting item to ms.bot it becomes zero which is checked after the while loop
247	item = ms.bot;
248	}
249	}
250
251	// see if there are more if we cared - we ignore invisible objects
252	if (item)
253	{
254	/* What we basically do is make a 'fake' object - when the user applies it,
255	* we notice the special tag the object has, and act accordingly.
256	*/
257	sl << uint32 (0x80000000 \| (start_pos + FLOORBOX_PAGESIZE))
258	<< uint32 (0)
259	<< uint32 ((uint32) - 1)
260	<< uint32 (need_face_now (pl, FINGER_DOWN))
261	<< data8 ("Apply this to see the items below")
262	<< uint16 (0)
263	<< uint8 (0)
264	<< uint32 (0);
265
266	if (pl->ns->itemcmd == 2)
267	sl << uint16 (0);
268
269	dirty = true;
270	}
271
272	// now send out all items in the ring buffer in reverse order
273	while (item_cnt)
274	{
275	--item_cnt;
276	item_idx = (item_idx ? item_idx : FLOORBOX_PAGESIZE) - 1;
277	object *item = items [item_idx];
278
279	add_object_to_socklist (*pl->ns, sl, item->head_ ());
280
281	dirty = true;
282
283	// if packet got too large, send it and begin a new one
284	if (sl.length () > MAXSOCKBUF - MAXITEMLEN)
285	{
286	pl->ns->flush_fx ();
287	pl->ns->send_packet (sl);
288
289	sl.reset ();
290	sl.printf ("item%d ", pl->ns->itemcmd);
291	sl << uint32 (0);
292
293	dirty = false;
294	}
295	}
296
297	if (start_pos)
298	{
299	sl << uint32 (0x80000000 \| (start_pos - FLOORBOX_PAGESIZE))
300	<< uint32 (0)
301	<< sint32 (-1)
302	<< uint32 (need_face_now (pl, FINGER_UP))
303	<< data8 ("Apply this to see the items higher up")
304	<< uint16 (0)
305	<< uint8 (0)
306	<< uint32 (0);
307
308	if (pl->ns->itemcmd == 2)
309	sl << uint16 (0);
310
311	dirty = true;
312	}
313
314	if (dirty)
315	{
316	pl->ns->flush_fx ();
317	pl->ns->send_packet (sl);
318	}
319	}
320
321	/**
322	* Sends whole inventory.
323	*/
324	void
325	esrv_send_inventory (object pl, object op)
326	{
327	if (!pl->contr->ns)//D
328	return;
329
330	int got_one = 0;
331
332	pl->contr->ns->send_packet_printf ("delinv %d", op->count);
333
334	packet sl;
335	sl.printf ("item%d ", pl->contr->ns->itemcmd);
336
337	sl << uint32 (op->count);
338
339	for (object *tmp = op->inv; tmp; tmp = tmp->below)
340	{
341	object *head;
342
343	if (tmp->head)
344	head = tmp->head;
345	else
346	head = tmp;
347
348	if (head->client_visible ())
349	{
350	add_object_to_socklist (*pl->contr->ns, sl, head);
351
352	got_one++;
353
354	/* IT is possible for players to accumulate a huge amount of
355	* items (especially with some of the bags out there) to
356	* overflow the buffer. IF so, send multiple item commands.
357	*/
358	if (sl.length () > MAXSOCKBUF - MAXITEMLEN)
359	{
360	pl->contr->ns->flush_fx ();
361	pl->contr->ns->send_packet (sl);
362
363	sl.reset ();
364	sl.printf ("item%d ", pl->contr->ns->itemcmd);
365	sl << uint32 (op->count);
366	got_one = 0;
367	}
368	}
369	}
370
371	if (got_one)
372	{
373	pl->contr->ns->flush_fx ();
374	pl->contr->ns->send_packet (sl);
375	}
376	}
377
378	/**
379	* Updates object op for player pl.
380	*
381	* flags is a list of values to update
382	* to the client (as defined in newclient.h - might as well use the
383	* same value both places.
384	*/
385	void
386	esrv_update_item (int flags, object pl, object op)
387	{
388	/* If we have a request to send the player item, skip a few checks. */
389	if (op != pl && !op->client_visible ())
390	return;
391
392	client *ns = pl->contr->ns;
393	if (!ns)
394	return;
395
396	packet sl ("upditem");
397
398	sl << uint8 (flags);
399
400	op = op->head_ ();
401
402	sl << uint32 (op->count);
403
404	if (flags & UPD_LOCATION)
405	sl << uint32 (op->env ? op->env->count : 0);
406
407	if (flags & UPD_FLAGS)
408	sl << uint32 (query_flags (op));
409
410	if (flags & UPD_WEIGHT)
411	{
412	sint32 weight = op->client_weight ();
413
414	if (op == pl)
415	ns->last_weight = weight;
416
417	sl << uint32 (weight);
418	}
419
420	if (flags & UPD_FACE)
421	{
422	ns->send_face (op->face, -50);
423	ns->flush_fx ();
424	sl << uint32 (op->face);
425	}
426
427	if (flags & UPD_NAME)
428	{
429	int len;
430	const char *item_p;
431	char item_n[127 * 2];
432
433	if (!op->custom_name)
434	{
435	len = assign (item_n, query_base_name (op, 0), 127);
436	item_p = query_base_name (op, 1);
437	}
438	else
439	{
440	len = assign (item_n, &op->custom_name, 127);
441	item_p = &op->custom_name;
442	}
443
444	len += assign (item_n + len, item_p, 127);
445
446	sl << data8 (item_n, len);
447	}
448
449	if (flags & UPD_ANIM)
450	sl << uint16 (op->animation_id);
451
452	if (flags & UPD_ANIMSPEED)
453	{
454	int anim_speed = 0;
455
456	if (op->flag [FLAG_ANIMATE])
457	{
458	if (op->anim_speed)
459	anim_speed = op->anim_speed;
460	else
461	{
462	if (op->speed < 0.001)
463	anim_speed = 255;
464	else if (op->speed >= 1.0)
465	anim_speed = 1;
466	else
467	anim_speed = 1. / op->speed;
468	}
469
470	if (anim_speed > 255)
471	anim_speed = 255;
472	}
473
474	sl << uint8 (anim_speed);
475	}
476
477	if (flags & UPD_NROF)
478	sl << uint32 (op->nrof);
479
480	pl->contr->ns->send_packet (sl);
481	}
482
483	/**
484	* Sends item's info to player.
485	*/
486	void
487	esrv_send_item (object pl, object op)
488	{
489	if (!pl->contr->ns)
490	return;
491
492	/* We only send 'visible' objects to the client, and sometimes the player */
493	if (!op->client_visible () && op->type != PLAYER)
494	return;
495
496	packet sl;
497
498	sl.printf ("item%d ", pl->contr->ns->itemcmd);
499
500	op = op->head_ ();
501
502	sl << uint32 (op->env ? op->env->count : 0);
503
504	add_object_to_socklist (*pl->contr->ns, sl, op);
505
506	pl->contr->ns->flush_fx ();
507	pl->contr->ns->send_packet (sl);
508	}
509
510	/**
511	* Tells the client to delete an item.
512	*/
513	void
514	esrv_del_item (player *pl, int tag)
515	{
516	if (!pl->ns)
517	return;
518
519	packet sl ("delitem");
520
521	sl << uint32 (tag);
522
523	pl->ns->send_packet (sl);
524	}
525
526
527	/*******************************************************************************
528	*
529	* Client has requested us to do something with an object.
530	*
531	******************************************************************************/
532
533	/**
534	* Takes a player and object count (tag) and returns the actual object
535	* pointer, or null if it can't be found.
536	*/
537	static object *
538	esrv_get_ob_from_count (object *pl, tag_t count)
539	{
540	if (pl->count == count)
541	return pl;
542
543	for (object *op = pl->inv; op; op = op->below)
544	if (op->count == count)
545	return op;
546	else if (op->type == CONTAINER && pl->container_ () == op)
547	for (object *tmp = op->inv; tmp; tmp = tmp->below)
548	if (tmp->count == count)
549	return tmp;
550
551	for (object *op = GET_MAP_OB (pl->map, pl->x, pl->y); op; op = op->above)
552	if (op->head && op->head->count == count)
553	return op;
554	else if (op->count == count)
555	return op;
556	else if (op->type == CONTAINER && pl->container_ () == op)
557	for (object *tmp = op->inv; tmp; tmp = tmp->below)
558	if (tmp->count == count)
559	return tmp;
560
561	#if 0
562	/* If the high bit is set, player examined a pseudo object. */
563	if (count & 0x80000000)
564	return 0;
565	#endif
566
567	return 0;
568	}
569
570	/** Client wants to examine some object. So lets do so. */
571	void
572	ExamineCmd (char buf, int len, player pl)
573	{
574	tag_t tag = atoi (buf);
575
576	/* If the high bit is set, player applied a pseudo object. */
577	if (tag & 0x80000000)
578	{
579	pl->ns->look_position = tag & 0x7fffffff;
580	pl->ns->floorbox_update ();
581	return;
582	}
583
584	object *op = esrv_get_ob_from_count (pl->ob, tag);
585
586	if (!op)
587	{
588	LOG (llevDebug, "Player '%s' tried to examine the unknown object (%ld)\n", &pl->ob->name, tag);
589	return;
590	}
591
592	examine (pl->ob, op);
593	}
594
595	/** Client wants to examine some object. So lets do so. */
596	void
597	ExCmd (char buf, int len, player pl)
598	{
599	tag_t tag = atoi (buf);
600
601	if (object *op = esrv_get_ob_from_count (pl->ob, tag))
602	{
603	std::string s = op->describe (pl->ob);
604
605	packet sl ("ex");
606	sl << ber32 (tag)
607	<< data (*pl->expand_cfpod (s.c_str ()));
608
609	pl->ns->send_packet (sl);
610	}
611	}
612
613	/** Client wants to apply some object. Lets do so. */
614	void
615	ApplyCmd (char buf, int len, player pl)
616	{
617	tag_t tag = atoi (buf);
618
619	/* If the high bit is set, player applied a pseudo object. */
620	if (tag & 0x80000000)
621	{
622	pl->ns->look_position = tag & 0x7fffffff;
623	pl->ns->floorbox_update ();
624	return;
625	}
626
627	object *op = esrv_get_ob_from_count (pl->ob, tag);
628
629	if (!op)
630	{
631	LOG (llevDebug, "Player '%s' tried to apply the unknown object (%d)\n", &pl->ob->name, tag);
632	return;
633	}
634
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->failmsg ("Could not find object to lock/unlock");
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->failmsg ("Could not find object to mark");
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