server/socket/info.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Deliantra 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 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 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
 * Basic client output functions.
 *
 * \date 2003-12-02
 *
 * This file implements some of the simpler output functions to the
 * client.  Basically, things like sending text strings along
 */

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

#include <cstring>

/**
 * Draws a normal message on the client.  It is pretty 
 * much the same thing as the draw_info above, but takes a color
 * parameter.  the esrv_drawinfo functions should probably be
 * replaced with this, just using black as the color.
 */
static void
esrv_print_msg (client *ns, int color, const char *str)
{
  ns->send_msg (color, "info", str);
}

/**
 * Draws   an extended message on the client. 
 * ns      the socket to send message to
 * color   color informations (used mainly if client does not support message type)
 * type,
 * subtype type and subtype of text message
 * intro   Intro message to send with main message if client does not support the message type
 * message The main message
 */
static void
esrv_print_ext_msg (client *ns, int color, uint8 type, uint8 subtype, const char *message)
{
  ns->send_packet_printf ("drawextinfo %d %u %u %s", color, type, subtype, message);
}

/**
 * Frontend for esrv_print_msg
 * \param colr message color
 * \param pl player to send to. Can be NULL
 * \param tmp message to send. Can be NULL
 *
 * If pl is NULL or without contr set, writes message to log.
 *
 * Else sends message to player via esrv_print_msg
 */
static void
print_message (int colr, const object *pl, const char *tmp)
{
  if (!tmp)
    tmp = "[NULL]";

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

  if (pl->type == PLAYER)
    esrv_print_msg (pl->contr->ns, colr, (char *)tmp);
}

bool
client::msg_suppressed (const char *msg)
{
  if (!pl)
    return false;

  if (pl->outputs_count <= 1 || !pl->outputs_sync)
    return false;

  int len = strlen (msg);

  if (len > MSG_BUF_SIZE)
    return false;

  msg_buf *lru = msgbuf;
  for (msg_buf *buf = msgbuf; buf < msgbuf + MSG_BUF_COUNT; ++buf)
    {
      if (len == buf->len && !memcmp (msg, buf->msg, len))
        {
          // found matching buf, see if expired
          if (buf->expire <= pticks || !buf->count)
            {
              // yes, take over matching buffer, print
              buf->expire = pticks + pl->outputs_sync;
              buf->count  = pl->outputs_count;

              return false;
            }

          // no, suppress
          --buf->count;
          return true;
        }

      if (lru->expire > buf->expire)
        lru = buf;
    }

  // new message, evoke oldest buffer
  lru->expire = pticks + pl->outputs_sync;
  lru->count  = pl->outputs_count;
  lru->len    = len;
  memcpy (lru->msg, msg, len);

  return false;
}

/**
 * Sends message to player(s).
 *
 * flags is various flags - mostly color, plus a few specials.
 *
 * pri is priority.  It is a little odd - the lower the value, the more
 * important it is.  Thus, 0 gets sent no matter what.  Otherwise, the
 * value must be less than the listening level that the player has set.
 * Unfortunately, there is no clear guideline on what each level does what.
 *
 * pl can be passed as NULL - in fact, this will be done if NDI_ALL is set
 * in the flags.
 *
 * If message is black, and not NDI_UNIQUE, gets sent through output buffers.
 *
 */
void
new_draw_info (int flags, int pri, const object *op, const char *buf)
{
  if (flags & NDI_ALL)
    {
      for_all_players (pl)
        new_draw_info (flags & ~NDI_ALL, pri, pl->ob, buf);
    }
  else
    {
      if (!op || !op->contr || !op->contr->ns)
        return;

      if (pri >= op->contr->listening)
        return;

      if ((flags & (NDI_COLOR_MASK | NDI_UNIQUE)) != NDI_BLACK
          || !op->contr->ns->msg_suppressed (buf))
        print_message (flags & NDI_COLOR_MASK, op, buf);
    }
}

/**
 * Wrapper for new_draw_info printf-like.
 *
 * This is a pretty trivial function, but it allows us to use printf style
 * formatting, so instead of the calling function having to do it, we do
 * it here.  It may also have advantages in the future for reduction of
 * client/server bandwidth (client could keep track of various strings
 */
void
new_draw_info_format (int flags, int pri, const object *pl, const char *format, ...)
{
  char buf[HUGE_BUF];

  va_list ap;
  va_start (ap, format);
  vsnprintf (buf, HUGE_BUF, format, ap);
  va_end (ap);

  new_draw_info (flags, pri, pl, buf);
}

void
draw_ext_info (int flags, int pri, const object *pl, uint8 type, uint8 subtype, const char *message, const char *oldmessage)
{

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

  if (pri >= pl->contr->listening)
    return;

  if (!CLIENT_SUPPORT_READABLES (pl->contr->ns, type))
    {
      char *buf = (char *) malloc (strlen (oldmessage == NULL ? message : oldmessage) + 1);

      if (buf == NULL)
        LOG (llevError, "info::draw_ext_info -> Out of memory!");
      else
        {
          strcpy (buf, oldmessage == NULL ? message : oldmessage);
          strip_media_tag (buf);
          new_draw_info (flags, pri, pl, buf);
          free (buf);
        }
    }
  else
    esrv_print_ext_msg (pl->contr->ns, flags & NDI_COLOR_MASK, type, subtype, message);
}

void
draw_ext_info_format (int flags, int pri, const object *pl, uint8 type, uint8 subtype, const char *old_format, char *new_format, ...)
{
  char buf[HUGE_BUF];

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

  if (pri >= pl->contr->listening)
    return;

  if (!CLIENT_SUPPORT_READABLES (pl->contr->ns, type))
    {
      va_list ap;

      LOG (llevDebug, "Non supported extension text type for client.\n");
      va_start (ap, new_format);
      vsnprintf (buf, HUGE_BUF, old_format, ap);
      va_end (ap);
      new_draw_info (flags, pri, pl, buf);
      return;
    }
  else
    {
      va_list ap;

      va_start (ap, new_format);
      vsnprintf (buf, HUGE_BUF, new_format, ap);
      va_end (ap);
      strip_media_tag (buf);
      esrv_print_ext_msg (pl->contr->ns, flags & NDI_COLOR_MASK, type, subtype, buf);
    }
}

/**
 * Writes to everyone on the map *except* op.  This is useful for emotions.
 */

void
new_info_map_except (int color, maptile * map, object *op, const char *str)
{
  for_all_players (pl)
    if (pl->ob->map == map && pl->ob != op)
      new_draw_info (color, 0, pl->ob, str);
}

/**
 * Writes to everyone on the map except op1 and op2
 */
void
new_info_map_except2 (int color, maptile * map, object *op1, object *op2, const char *str)
{
  for_all_players (pl)
    if (pl->ob->map == map && pl->ob != op1 && pl->ob != op2)
      new_draw_info (color, 0, pl->ob, str);
}

/**
 * Writes to everyone on the specified map
 */
void
new_info_map (int color, maptile * map, const char *str)
{
  for_all_players (pl)
    if (pl->ob->map == map)
      new_draw_info (color, 0, pl->ob, str);
}

/**
 * Sets player title.
 */
void
set_title (object *pl, char *buf)
{
  /* Eneq(@csd.uu.se): Let players define their own titles. */
  if (pl->contr->own_title[0] == '\0')
    sprintf (buf, "Player: %s the %s", (const char *) pl->name, (const char *) pl->contr->title);
  else
    sprintf (buf, "Player: %s %s", (const char *) pl->name, (const char *) pl->contr->own_title);
}

// formerly a macro, used only by magic map, so optimised it out
static inline faceidx
GET_MAP_FACE (maptile *m, int x, int y, int layer)
{
  if (object *op = GET_MAP_FACE_OBJ (m, x, y, layer))
    return op->face;
  else
    return 0;
}

/**
 * Helper for magic map creation.
 *
 * Takes a player, the map_mark array and an x and y starting position.
 * pl is the player.
 * px, py are offsets from the player.
 *
 * This function examines all the adjacant spaces next to px, py.
 * It updates the map_mark arrow with the color and high bits set
 * for various code values.
 */
static void
magic_mapping_mark_recursive (object *pl, char *map_mark, int px, int py)
{
  int x, y, dx, dy, mflags;
  sint16 nx, ny;
  maptile *mp;

  for (dx = -1; dx <= 1; dx++)
    {
      for (dy = -1; dy <= 1; dy++)
        {
          x = px + dx;
          y = py + dy;

          if (FABS (x) >= MAGIC_MAP_HALF || FABS (y) >= MAGIC_MAP_HALF)
            continue;

          mp = pl->map;
          nx = pl->x + x;
          ny = pl->y + y;

          mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
          if (mflags & P_OUT_OF_MAP)
            continue;

          if (map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] == 0)
            {
              int f = GET_MAP_FACE (mp, nx, ny, 0);
              if (f == blank_face)
                {
                  f = GET_MAP_FACE (mp, nx, ny, 1);
                  if (f == blank_face)
                    f = GET_MAP_FACE (mp, nx, ny, 2);
                }

              int magicmap = faces [f].magicmap;

              /* Should probably have P_NO_MAGIC here also, but then shops don't
               * work.
               */
              if (mflags & P_BLOCKSVIEW)
                map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL | magicmap;
              else
                {
                  map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR | magicmap;
                  magic_mapping_mark_recursive (pl, map_mark, x, y);
                }
            }
        }
    }
}

/**
 * Creates magic map for player.
 *
 * Note:  For improved magic mapping display, the space that blocks
 * the view is now marked with value 2.  Any dependencies of map_mark
 * being nonzero have been changed to check for 1.  Also, since
 * map_mark is a char value, putting 2 in should cause no problems.
 *
 * This function examines the map the player is on, and determines what
 * is visible.  2 is set for walls or objects that blocks view.  1
 * is for open spaces.  map_mark should already have been initialised
 * to zero before this is called.
 * strength is an initial strength*2 rectangular area that we automatically
 * see in/penetrate through.
 */
void
magic_mapping_mark (object *pl, char *map_mark, int strength)
{
  int x, y, mflags;
  sint16 nx, ny;
  maptile *mp;

  for (x = -strength; x < strength; x++)
    {
      for (y = -strength; y < strength; y++)
        {
          mp = pl->map;
          nx = pl->x + x;
          ny = pl->y + y;

          mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
          if (mflags & P_OUT_OF_MAP)
            continue;

          int f = GET_MAP_FACE (mp, nx, ny, 0);
          if (f == blank_face)
            {
              f = GET_MAP_FACE (mp, nx, ny, 1);
              if (f == blank_face)
                f = GET_MAP_FACE (mp, nx, ny, 2);
            }

          int magicmap = faces [f].magicmap;

          if (mflags & P_BLOCKSVIEW)
            map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL | magicmap;
          else
            {
              map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR | magicmap;
              magic_mapping_mark_recursive (pl, map_mark, x, y);
            }
        }
    }
}

/**
 * Creates and sends magic map to player.
 *
 * The following function is a lot messier than it really should be,
 * but there is no real easy solution.
 *
 * Mark Wedel
 */
void
draw_magic_map (object *pl)
{
  char *map_mark = (char *)calloc (MAGIC_MAP_SIZE * MAGIC_MAP_SIZE, 1);
  int xmin, xmax, ymin, ymax;

  if (pl->type != PLAYER)
    {
      LOG (llevError, "Non player object called draw_map.\n");
      return;
    }

  /* First, we figure out what spaces are 'reachable' by the player */
  magic_mapping_mark (pl, map_mark, 3);

  /* We now go through and figure out what spaces have been
   * marked, and thus figure out rectangular region we send
   * to the client (eg, if only a 10x10 area is visible, we only
   * want to send those 100 spaces.)
   */
  xmin = MAGIC_MAP_SIZE;
  ymin = MAGIC_MAP_SIZE;
  xmax = 0;
  ymax = 0;

  for (int x = 0; x < MAGIC_MAP_SIZE; x++)
    for (int y = 0; y < MAGIC_MAP_SIZE; y++)
      if (map_mark[x + pl->map->width * y] | FACE_FLOOR)
        {
          xmin = x < xmin ? x : xmin;
          xmax = x > xmax ? x : xmax;
          ymin = y < ymin ? y : ymin;
          ymax = y > ymax ? y : ymax;
        }

  packet sl;
  sl.printf ("magicmap %d %d %d %d ", (xmax - xmin + 1), (ymax - ymin + 1),
             MAGIC_MAP_HALF - xmin, MAGIC_MAP_HALF - ymin);

  for (int y = ymin; y <= ymax; y++)
    for (int x = xmin; x <= xmax; x++)
      sl << uint8 (map_mark[x + MAGIC_MAP_SIZE * y] & ~FACE_FLOOR);

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

  free (map_mark);
}

Revision:	1.50
Committed:	Tue May 6 16:55:26 2008 UTC (16 years ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_6, rel-2_54, rel-2_55, rel-2_56, rel-2_61
Changes since 1.49:	+1 -1 lines
Log Message:	update copyright
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6	* Copyright (©) 1992,2007 Frank Tore Johansen
7	*
8	* Deliantra is free software: you can redistribute it and/or modify
9	* it under the terms of the GNU General Public License as published by
10	* the Free Software Foundation, either version 3 of the License, or
11	* (at your 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 GNU General Public License
19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
20	*
21	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/
23
24	/**
25	* \file
26	* Basic client output functions.
27	*
28	* \date 2003-12-02
29	*
30	* This file implements some of the simpler output functions to the
31	* client. Basically, things like sending text strings along
32	*/
33
34	#include <global.h>
35	#include <sproto.h>
36	#include <stdarg.h>
37	#include <spells.h>
38	#include <skills.h>
39
40	#include <cstring>
41
42	/**
43	* Draws a normal message on the client. It is pretty
44	* much the same thing as the draw_info above, but takes a color
45	* parameter. the esrv_drawinfo functions should probably be
46	* replaced with this, just using black as the color.
47	*/
48	static void
49	esrv_print_msg (client ns, int color, const char str)
50	{
51	ns->send_msg (color, "info", str);
52	}
53
54	/**
55	* Draws an extended message on the client.
56	* ns the socket to send message to
57	* color color informations (used mainly if client does not support message type)
58	* type,
59	* subtype type and subtype of text message
60	* intro Intro message to send with main message if client does not support the message type
61	* message The main message
62	*/
63	static void
64	esrv_print_ext_msg (client ns, int color, uint8 type, uint8 subtype, const char message)
65	{
66	ns->send_packet_printf ("drawextinfo %d %u %u %s", color, type, subtype, message);
67	}
68
69	/**
70	* Frontend for esrv_print_msg
71	* \param colr message color
72	* \param pl player to send to. Can be NULL
73	* \param tmp message to send. Can be NULL
74	*
75	* If pl is NULL or without contr set, writes message to log.
76	*
77	* Else sends message to player via esrv_print_msg
78	*/
79	static void
80	print_message (int colr, const object pl, const char tmp)
81	{
82	if (!tmp)
83	tmp = "[NULL]";
84
85	if (!pl \|\| (pl->type == PLAYER && pl->contr == NULL))
86	return;
87
88	if (pl->type == PLAYER)
89	esrv_print_msg (pl->contr->ns, colr, (char *)tmp);
90	}
91
92	bool
93	client::msg_suppressed (const char *msg)
94	{
95	if (!pl)
96	return false;
97
98	if (pl->outputs_count <= 1 \|\| !pl->outputs_sync)
99	return false;
100
101	int len = strlen (msg);
102
103	if (len > MSG_BUF_SIZE)
104	return false;
105
106	msg_buf *lru = msgbuf;
107	for (msg_buf *buf = msgbuf; buf < msgbuf + MSG_BUF_COUNT; ++buf)
108	{
109	if (len == buf->len && !memcmp (msg, buf->msg, len))
110	{
111	// found matching buf, see if expired
112	if (buf->expire <= pticks \|\| !buf->count)
113	{
114	// yes, take over matching buffer, print
115	buf->expire = pticks + pl->outputs_sync;
116	buf->count = pl->outputs_count;
117
118	return false;
119	}
120
121	// no, suppress
122	--buf->count;
123	return true;
124	}
125
126	if (lru->expire > buf->expire)
127	lru = buf;
128	}
129
130	// new message, evoke oldest buffer
131	lru->expire = pticks + pl->outputs_sync;
132	lru->count = pl->outputs_count;
133	lru->len = len;
134	memcpy (lru->msg, msg, len);
135
136	return false;
137	}
138
139	/**
140	* Sends message to player(s).
141	*
142	* flags is various flags - mostly color, plus a few specials.
143	*
144	* pri is priority. It is a little odd - the lower the value, the more
145	* important it is. Thus, 0 gets sent no matter what. Otherwise, the
146	* value must be less than the listening level that the player has set.
147	* Unfortunately, there is no clear guideline on what each level does what.
148	*
149	* pl can be passed as NULL - in fact, this will be done if NDI_ALL is set
150	* in the flags.
151	*
152	* If message is black, and not NDI_UNIQUE, gets sent through output buffers.
153	*
154	*/
155	void
156	new_draw_info (int flags, int pri, const object op, const char buf)
157	{
158	if (flags & NDI_ALL)
159	{
160	for_all_players (pl)
161	new_draw_info (flags & ~NDI_ALL, pri, pl->ob, buf);
162	}
163	else
164	{
165	if (!op \|\| !op->contr \|\| !op->contr->ns)
166	return;
167
168	if (pri >= op->contr->listening)
169	return;
170
171	if ((flags & (NDI_COLOR_MASK \| NDI_UNIQUE)) != NDI_BLACK
172	\|\| !op->contr->ns->msg_suppressed (buf))
173	print_message (flags & NDI_COLOR_MASK, op, buf);
174	}
175	}
176
177	/**
178	* Wrapper for new_draw_info printf-like.
179	*
180	* This is a pretty trivial function, but it allows us to use printf style
181	* formatting, so instead of the calling function having to do it, we do
182	* it here. It may also have advantages in the future for reduction of
183	* client/server bandwidth (client could keep track of various strings
184	*/
185	void
186	new_draw_info_format (int flags, int pri, const object pl, const char format, ...)
187	{
188	char buf[HUGE_BUF];
189
190	va_list ap;
191	va_start (ap, format);
192	vsnprintf (buf, HUGE_BUF, format, ap);
193	va_end (ap);
194
195	new_draw_info (flags, pri, pl, buf);
196	}
197
198	void
199	draw_ext_info (int flags, int pri, const object pl, uint8 type, uint8 subtype, const char message, const char *oldmessage)
200	{
201
202	if (!pl \|\| (pl->type != PLAYER) \|\| (pl->contr == NULL))
203	return;
204
205	if (pri >= pl->contr->listening)
206	return;
207
208	if (!CLIENT_SUPPORT_READABLES (pl->contr->ns, type))
209	{
210	char buf = (char ) malloc (strlen (oldmessage == NULL ? message : oldmessage) + 1);
211
212	if (buf == NULL)
213	LOG (llevError, "info::draw_ext_info -> Out of memory!");
214	else
215	{
216	strcpy (buf, oldmessage == NULL ? message : oldmessage);
217	strip_media_tag (buf);
218	new_draw_info (flags, pri, pl, buf);
219	free (buf);
220	}
221	}
222	else
223	esrv_print_ext_msg (pl->contr->ns, flags & NDI_COLOR_MASK, type, subtype, message);
224	}
225
226	void
227	draw_ext_info_format (int flags, int pri, const object pl, uint8 type, uint8 subtype, const char old_format, char *new_format, ...)
228	{
229	char buf[HUGE_BUF];
230
231	if (!pl \|\| (pl->type != PLAYER) \|\| (pl->contr == NULL))
232	return;
233
234	if (pri >= pl->contr->listening)
235	return;
236
237	if (!CLIENT_SUPPORT_READABLES (pl->contr->ns, type))
238	{
239	va_list ap;
240
241	LOG (llevDebug, "Non supported extension text type for client.\n");
242	va_start (ap, new_format);
243	vsnprintf (buf, HUGE_BUF, old_format, ap);
244	va_end (ap);
245	new_draw_info (flags, pri, pl, buf);
246	return;
247	}
248	else
249	{
250	va_list ap;
251
252	va_start (ap, new_format);
253	vsnprintf (buf, HUGE_BUF, new_format, ap);
254	va_end (ap);
255	strip_media_tag (buf);
256	esrv_print_ext_msg (pl->contr->ns, flags & NDI_COLOR_MASK, type, subtype, buf);
257	}
258	}
259
260	/**
261	* Writes to everyone on the map except op. This is useful for emotions.
262	*/
263
264	void
265	new_info_map_except (int color, maptile * map, object op, const char str)
266	{
267	for_all_players (pl)
268	if (pl->ob->map == map && pl->ob != op)
269	new_draw_info (color, 0, pl->ob, str);
270	}
271
272	/**
273	* Writes to everyone on the map except op1 and op2
274	*/
275	void
276	new_info_map_except2 (int color, maptile * map, object op1, object op2, const char *str)
277	{
278	for_all_players (pl)
279	if (pl->ob->map == map && pl->ob != op1 && pl->ob != op2)
280	new_draw_info (color, 0, pl->ob, str);
281	}
282
283	/**
284	* Writes to everyone on the specified map
285	*/
286	void
287	new_info_map (int color, maptile * map, const char *str)
288	{
289	for_all_players (pl)
290	if (pl->ob->map == map)
291	new_draw_info (color, 0, pl->ob, str);
292	}
293
294	/**
295	* Sets player title.
296	*/
297	void
298	set_title (object pl, char buf)
299	{
300	/* Eneq(@csd.uu.se): Let players define their own titles. */
301	if (pl->contr->own_title[0] == '\0')
302	sprintf (buf, "Player: %s the %s", (const char ) pl->name, (const char ) pl->contr->title);
303	else
304	sprintf (buf, "Player: %s %s", (const char ) pl->name, (const char ) pl->contr->own_title);
305	}
306
307	// formerly a macro, used only by magic map, so optimised it out
308	static inline faceidx
309	GET_MAP_FACE (maptile *m, int x, int y, int layer)
310	{
311	if (object *op = GET_MAP_FACE_OBJ (m, x, y, layer))
312	return op->face;
313	else
314	return 0;
315	}
316
317	/**
318	* Helper for magic map creation.
319	*
320	* Takes a player, the map_mark array and an x and y starting position.
321	* pl is the player.
322	* px, py are offsets from the player.
323	*
324	* This function examines all the adjacant spaces next to px, py.
325	* It updates the map_mark arrow with the color and high bits set
326	* for various code values.
327	*/
328	static void
329	magic_mapping_mark_recursive (object pl, char map_mark, int px, int py)
330	{
331	int x, y, dx, dy, mflags;
332	sint16 nx, ny;
333	maptile *mp;
334
335	for (dx = -1; dx <= 1; dx++)
336	{
337	for (dy = -1; dy <= 1; dy++)
338	{
339	x = px + dx;
340	y = py + dy;
341
342	if (FABS (x) >= MAGIC_MAP_HALF \|\| FABS (y) >= MAGIC_MAP_HALF)
343	continue;
344
345	mp = pl->map;
346	nx = pl->x + x;
347	ny = pl->y + y;
348
349	mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
350	if (mflags & P_OUT_OF_MAP)
351	continue;
352
353	if (map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] == 0)
354	{
355	int f = GET_MAP_FACE (mp, nx, ny, 0);
356	if (f == blank_face)
357	{
358	f = GET_MAP_FACE (mp, nx, ny, 1);
359	if (f == blank_face)
360	f = GET_MAP_FACE (mp, nx, ny, 2);
361	}
362
363	int magicmap = faces [f].magicmap;
364
365	/* Should probably have P_NO_MAGIC here also, but then shops don't
366	* work.
367	*/
368	if (mflags & P_BLOCKSVIEW)
369	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| magicmap;
370	else
371	{
372	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| magicmap;
373	magic_mapping_mark_recursive (pl, map_mark, x, y);
374	}
375	}
376	}
377	}
378	}
379
380	/**
381	* Creates magic map for player.
382	*
383	* Note: For improved magic mapping display, the space that blocks
384	* the view is now marked with value 2. Any dependencies of map_mark
385	* being nonzero have been changed to check for 1. Also, since
386	* map_mark is a char value, putting 2 in should cause no problems.
387	*
388	* This function examines the map the player is on, and determines what
389	* is visible. 2 is set for walls or objects that blocks view. 1
390	* is for open spaces. map_mark should already have been initialised
391	* to zero before this is called.
392	* strength is an initial strength*2 rectangular area that we automatically
393	* see in/penetrate through.
394	*/
395	void
396	magic_mapping_mark (object pl, char map_mark, int strength)
397	{
398	int x, y, mflags;
399	sint16 nx, ny;
400	maptile *mp;
401
402	for (x = -strength; x < strength; x++)
403	{
404	for (y = -strength; y < strength; y++)
405	{
406	mp = pl->map;
407	nx = pl->x + x;
408	ny = pl->y + y;
409
410	mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
411	if (mflags & P_OUT_OF_MAP)
412	continue;
413
414	int f = GET_MAP_FACE (mp, nx, ny, 0);
415	if (f == blank_face)
416	{
417	f = GET_MAP_FACE (mp, nx, ny, 1);
418	if (f == blank_face)
419	f = GET_MAP_FACE (mp, nx, ny, 2);
420	}
421
422	int magicmap = faces [f].magicmap;
423
424	if (mflags & P_BLOCKSVIEW)
425	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| magicmap;
426	else
427	{
428	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| magicmap;
429	magic_mapping_mark_recursive (pl, map_mark, x, y);
430	}
431	}
432	}
433	}
434
435	/**
436	* Creates and sends magic map to player.
437	*
438	* The following function is a lot messier than it really should be,
439	* but there is no real easy solution.
440	*
441	* Mark Wedel
442	*/
443	void
444	draw_magic_map (object *pl)
445	{
446	char map_mark = (char )calloc (MAGIC_MAP_SIZE * MAGIC_MAP_SIZE, 1);
447	int xmin, xmax, ymin, ymax;
448
449	if (pl->type != PLAYER)
450	{
451	LOG (llevError, "Non player object called draw_map.\n");
452	return;
453	}
454
455	/* First, we figure out what spaces are 'reachable' by the player */
456	magic_mapping_mark (pl, map_mark, 3);
457
458	/* We now go through and figure out what spaces have been
459	* marked, and thus figure out rectangular region we send
460	* to the client (eg, if only a 10x10 area is visible, we only
461	* want to send those 100 spaces.)
462	*/
463	xmin = MAGIC_MAP_SIZE;
464	ymin = MAGIC_MAP_SIZE;
465	xmax = 0;
466	ymax = 0;
467
468	for (int x = 0; x < MAGIC_MAP_SIZE; x++)
469	for (int y = 0; y < MAGIC_MAP_SIZE; y++)
470	if (map_mark[x + pl->map->width * y] \| FACE_FLOOR)
471	{
472	xmin = x < xmin ? x : xmin;
473	xmax = x > xmax ? x : xmax;
474	ymin = y < ymin ? y : ymin;
475	ymax = y > ymax ? y : ymax;
476	}
477
478	packet sl;
479	sl.printf ("magicmap %d %d %d %d ", (xmax - xmin + 1), (ymax - ymin + 1),
480	MAGIC_MAP_HALF - xmin, MAGIC_MAP_HALF - ymin);
481
482	for (int y = ymin; y <= ymax; y++)
483	for (int x = xmin; x <= xmax; x++)
484	sl << uint8 (map_mark[x + MAGIC_MAP_SIZE * y] & ~FACE_FLOOR);
485
486	pl->contr->ns->send_packet (sl);
487
488	free (map_mark);
489	}
490