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 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
 * 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 unused.
 *
 * 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, 0, pl->ob, buf);
    }
  else
    {
      if (!op || !op->contr || !op->contr->ns)
        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, ...)
{
  va_list ap;
  va_start (ap, format);
  new_draw_info (flags, pri, pl, vformat (format, ap));
  va_end (ap);
}

/**
 * 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
 */
static 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 (mapspace &ms, int layer)
{
  if (object *op = ms.faces_obj [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)
{
  for (int dx = -1; dx <= 1; dx++)
    {
      for (int dy = -1; dy <= 1; dy++)
        {
          int x = px + dx;
          int y = py + dy;

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

          mapxy pos (pl);
          pos.move (x, y);

          if (!pos.normalise ())
            continue;

          mapspace &ms = pos.ms ();

          if (map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] == 0)
            {
              int mflags = ms.flags ();

              int f = GET_MAP_FACE (ms, 0);
              if (f == blank_face)
                {
                  f = GET_MAP_FACE (ms, 1);
                  if (f == blank_face)
                    f = GET_MAP_FACE (ms, 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.
 */
static void
magic_mapping_mark (object *pl, char *map_mark, int strength)
{
  for (int x = -strength; x < strength; x++)
    {
      for (int y = -strength; y < strength; y++)
        {
          mapxy pos (pl);
          pos.move (x, y);

          if (!pos.normalise ())
            continue;

          mapspace &ms = pos.ms ();

          int mflags = ms.flags ();

          int f = GET_MAP_FACE (ms, 0);
          if (f == blank_face)
            {
              f = GET_MAP_FACE (ms, 1);
              if (f == blank_face)
                f = GET_MAP_FACE (ms, 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:	1.57
Committed:	Fri Nov 6 13:11:28 2009 UTC (14 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.56:	+0 -49 lines
Log Message:	make effectively static symbols actually static, part 5
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.47	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	pippijn	1.33	*
4	root	1.50	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.43	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7	pippijn	1.33	*
8	root	1.52	* 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	pippijn	1.33	*
13	root	1.46	* 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	pippijn	1.33	*
18	root	1.52	* 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	root	1.43	*
22	root	1.47	* The authors can be reached via e-mail to <support@deliantra.net>
23	pippijn	1.33	*/
24	elmex	1.1
25			/**
26			* \file
27			* Basic client output functions.
28			*
29			* \date 2003-12-02
30			*
31			* This file implements some of the simpler output functions to the
32			* client. Basically, things like sending text strings along
33			*/
34
35			#include <global.h>
36			#include <sproto.h>
37			#include <stdarg.h>
38			#include <spells.h>
39			#include <skills.h>
40
41	root	1.45	#include <cstring>
42
43	elmex	1.1	/**
44			* Draws a normal message on the client. It is pretty
45			* much the same thing as the draw_info above, but takes a color
46			* parameter. the esrv_drawinfo functions should probably be
47			* replaced with this, just using black as the color.
48			*/
49	root	1.5	static void
50	root	1.22	esrv_print_msg (client ns, int color, const char str)
51	elmex	1.1	{
52	root	1.45	ns->send_msg (color, "info", str);
53	elmex	1.1	}
54
55			/**
56			* Draws an extended message on the client.
57			* ns the socket to send message to
58			* color color informations (used mainly if client does not support message type)
59			* type,
60			* subtype type and subtype of text message
61			* intro Intro message to send with main message if client does not support the message type
62			* message The main message
63			*/
64	root	1.5	static void
65	root	1.22	esrv_print_ext_msg (client ns, int color, uint8 type, uint8 subtype, const char message)
66	elmex	1.1	{
67	root	1.45	ns->send_packet_printf ("drawextinfo %d %u %u %s", color, type, subtype, message);
68	elmex	1.1	}
69
70			/**
71			* Frontend for esrv_print_msg
72			* \param colr message color
73			* \param pl player to send to. Can be NULL
74			* \param tmp message to send. Can be NULL
75			*
76			* If pl is NULL or without contr set, writes message to log.
77			*
78			* Else sends message to player via esrv_print_msg
79			*/
80	root	1.5	static void
81			print_message (int colr, const object pl, const char tmp)
82			{
83	root	1.11	if (!tmp)
84			tmp = "[NULL]";
85	elmex	1.1
86			if (!pl \|\| (pl->type == PLAYER && pl->contr == NULL))
87			return;
88
89	root	1.5	if (pl->type == PLAYER)
90	root	1.45	esrv_print_msg (pl->contr->ns, colr, (char *)tmp);
91	elmex	1.1	}
92
93	root	1.38	bool
94			client::msg_suppressed (const char *msg)
95	elmex	1.1	{
96	root	1.38	if (!pl)
97			return false;
98	elmex	1.1
99	root	1.38	if (pl->outputs_count <= 1 \|\| !pl->outputs_sync)
100			return false;
101	elmex	1.1
102	root	1.38	int len = strlen (msg);
103	elmex	1.1
104	root	1.38	if (len > MSG_BUF_SIZE)
105			return false;
106	elmex	1.1
107	root	1.38	msg_buf *lru = msgbuf;
108			for (msg_buf *buf = msgbuf; buf < msgbuf + MSG_BUF_COUNT; ++buf)
109	root	1.5	{
110	root	1.38	if (len == buf->len && !memcmp (msg, buf->msg, len))
111	root	1.5	{
112	root	1.38	// found matching buf, see if expired
113			if (buf->expire <= pticks \|\| !buf->count)
114	root	1.5	{
115	root	1.38	// yes, take over matching buffer, print
116			buf->expire = pticks + pl->outputs_sync;
117			buf->count = pl->outputs_count;
118
119			return false;
120	root	1.2	}
121	root	1.38
122			// no, suppress
123			--buf->count;
124			return true;
125	root	1.2	}
126	root	1.5
127	root	1.38	if (lru->expire > buf->expire)
128			lru = buf;
129	elmex	1.1	}
130	root	1.38
131			// new message, evoke oldest buffer
132			lru->expire = pticks + pl->outputs_sync;
133			lru->count = pl->outputs_count;
134			lru->len = len;
135			memcpy (lru->msg, msg, len);
136
137			return false;
138	elmex	1.1	}
139	root	1.5
140	elmex	1.1	/**
141			* Sends message to player(s).
142			*
143			* flags is various flags - mostly color, plus a few specials.
144			*
145	root	1.51	* pri is unused.
146	elmex	1.1	*
147			* pl can be passed as NULL - in fact, this will be done if NDI_ALL is set
148			* in the flags.
149			*
150			* If message is black, and not NDI_UNIQUE, gets sent through output buffers.
151			*
152			*/
153	root	1.5	void
154	root	1.41	new_draw_info (int flags, int pri, const object op, const char buf)
155	elmex	1.1	{
156	root	1.5	if (flags & NDI_ALL)
157	root	1.42	{
158			for_all_players (pl)
159	root	1.51	new_draw_info (flags & ~NDI_ALL, 0, pl->ob, buf);
160	root	1.42	}
161	root	1.41	else
162	root	1.5	{
163	root	1.41	if (!op \|\| !op->contr \|\| !op->contr->ns)
164			return;
165
166			if ((flags & (NDI_COLOR_MASK \| NDI_UNIQUE)) != NDI_BLACK
167			\|\| !op->contr->ns->msg_suppressed (buf))
168			print_message (flags & NDI_COLOR_MASK, op, buf);
169	elmex	1.1	}
170			}
171
172			/**
173			* Wrapper for new_draw_info printf-like.
174			*
175			* This is a pretty trivial function, but it allows us to use printf style
176			* formatting, so instead of the calling function having to do it, we do
177			* it here. It may also have advantages in the future for reduction of
178			* client/server bandwidth (client could keep track of various strings
179			*/
180	root	1.5	void
181			new_draw_info_format (int flags, int pri, const object pl, const char format, ...)
182	elmex	1.1	{
183	root	1.5	va_list ap;
184			va_start (ap, format);
185	root	1.53	new_draw_info (flags, pri, pl, vformat (format, ap));
186	root	1.5	va_end (ap);
187	elmex	1.1	}
188
189			/**
190			* Writes to everyone on the map except op. This is useful for emotions.
191			*/
192	root	1.5	void
193	root	1.8	new_info_map_except (int color, maptile * map, object op, const char str)
194	root	1.5	{
195	root	1.24	for_all_players (pl)
196	root	1.49	if (pl->ob->map == map && pl->ob != op)
197	root	1.31	new_draw_info (color, 0, pl->ob, str);
198	elmex	1.1	}
199
200			/**
201			* Writes to everyone on the map except op1 and op2
202			*/
203	root	1.56	static void
204	root	1.8	new_info_map_except2 (int color, maptile * map, object op1, object op2, const char *str)
205	root	1.5	{
206	root	1.24	for_all_players (pl)
207	root	1.49	if (pl->ob->map == map && pl->ob != op1 && pl->ob != op2)
208	root	1.31	new_draw_info (color, 0, pl->ob, str);
209	elmex	1.1	}
210
211			/**
212			* Writes to everyone on the specified map
213			*/
214	root	1.5	void
215	root	1.8	new_info_map (int color, maptile * map, const char *str)
216	root	1.5	{
217	root	1.24	for_all_players (pl)
218	root	1.49	if (pl->ob->map == map)
219	root	1.31	new_draw_info (color, 0, pl->ob, str);
220	elmex	1.1	}
221
222			/**
223			* Sets player title.
224			*/
225	root	1.5	void
226			set_title (object pl, char buf)
227	elmex	1.1	{
228	root	1.5	/* Eneq(@csd.uu.se): Let players define their own titles. */
229			if (pl->contr->own_title[0] == '\0')
230			sprintf (buf, "Player: %s the %s", (const char ) pl->name, (const char ) pl->contr->title);
231			else
232			sprintf (buf, "Player: %s %s", (const char ) pl->name, (const char ) pl->contr->own_title);
233	elmex	1.1	}
234
235	root	1.36	// formerly a macro, used only by magic map, so optimised it out
236			static inline faceidx
237	root	1.54	GET_MAP_FACE (mapspace &ms, int layer)
238	root	1.36	{
239	root	1.54	if (object *op = ms.faces_obj [layer])
240	root	1.36	return op->face;
241			else
242			return 0;
243			}
244
245	elmex	1.1	/**
246			* Helper for magic map creation.
247			*
248			* Takes a player, the map_mark array and an x and y starting position.
249			* pl is the player.
250			* px, py are offsets from the player.
251			*
252			* This function examines all the adjacant spaces next to px, py.
253			* It updates the map_mark arrow with the color and high bits set
254			* for various code values.
255			*/
256	root	1.5	static void
257			magic_mapping_mark_recursive (object pl, char map_mark, int px, int py)
258	elmex	1.1	{
259	root	1.54	for (int dx = -1; dx <= 1; dx++)
260	root	1.5	{
261	root	1.54	for (int dy = -1; dy <= 1; dy++)
262	root	1.5	{
263	root	1.54	int x = px + dx;
264			int y = py + dy;
265	root	1.5
266	root	1.54	if (abs (x) >= MAGIC_MAP_HALF \|\| abs (y) >= MAGIC_MAP_HALF)
267	root	1.5	continue;
268
269	root	1.54	mapxy pos (pl);
270			pos.move (x, y);
271	root	1.5
272	root	1.54	if (!pos.normalise ())
273	root	1.5	continue;
274
275	root	1.54	mapspace &ms = pos.ms ();
276
277	root	1.5	if (map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] == 0)
278			{
279	root	1.54	int mflags = ms.flags ();
280
281			int f = GET_MAP_FACE (ms, 0);
282	root	1.5	if (f == blank_face)
283	root	1.35	{
284	root	1.54	f = GET_MAP_FACE (ms, 1);
285	root	1.35	if (f == blank_face)
286	root	1.54	f = GET_MAP_FACE (ms, 2);
287	root	1.35	}
288
289			int magicmap = faces [f].magicmap;
290	root	1.5
291			/* Should probably have P_NO_MAGIC here also, but then shops don't
292			* work.
293			*/
294			if (mflags & P_BLOCKSVIEW)
295	root	1.35	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| magicmap;
296	root	1.5	else
297			{
298	root	1.35	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| magicmap;
299	root	1.5	magic_mapping_mark_recursive (pl, map_mark, x, y);
300	root	1.2	}
301			}
302			}
303	elmex	1.1	}
304			}
305
306			/**
307			* Creates magic map for player.
308			*
309	root	1.54	* Note: For improved magic mapping display, the space that blocks
310			* the view is now marked with value 2. Any dependencies of map_mark
311			* being nonzero have been changed to check for 1. Also, since
312	elmex	1.1	* map_mark is a char value, putting 2 in should cause no problems.
313			*
314			* This function examines the map the player is on, and determines what
315	root	1.54	* is visible. 2 is set for walls or objects that blocks view. 1
316			* is for open spaces. map_mark should already have been initialised
317	elmex	1.1	* to zero before this is called.
318			* strength is an initial strength*2 rectangular area that we automatically
319			* see in/penetrate through.
320			*/
321	root	1.56	static void
322	root	1.5	magic_mapping_mark (object pl, char map_mark, int strength)
323	elmex	1.1	{
324	root	1.54	for (int x = -strength; x < strength; x++)
325	root	1.5	{
326	root	1.54	for (int y = -strength; y < strength; y++)
327	root	1.5	{
328	root	1.54	mapxy pos (pl);
329			pos.move (x, y);
330	root	1.35
331	root	1.54	if (!pos.normalise ())
332	root	1.5	continue;
333	root	1.35
334	root	1.54	mapspace &ms = pos.ms ();
335
336			int mflags = ms.flags ();
337
338			int f = GET_MAP_FACE (ms, 0);
339	root	1.35	if (f == blank_face)
340	root	1.5	{
341	root	1.54	f = GET_MAP_FACE (ms, 1);
342	root	1.5	if (f == blank_face)
343	root	1.54	f = GET_MAP_FACE (ms, 2);
344	root	1.2	}
345
346	root	1.35	int magicmap = faces [f].magicmap;
347
348	root	1.5	if (mflags & P_BLOCKSVIEW)
349	root	1.35	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| magicmap;
350	root	1.5	else
351			{
352	root	1.35	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| magicmap;
353	root	1.5	magic_mapping_mark_recursive (pl, map_mark, x, y);
354	root	1.2	}
355			}
356	elmex	1.1	}
357			}
358
359			/**
360			* Creates and sends magic map to player.
361			*
362			* The following function is a lot messier than it really should be,
363			* but there is no real easy solution.
364			*
365			* Mark Wedel
366			*/
367	root	1.5	void
368			draw_magic_map (object *pl)
369	elmex	1.1	{
370	root	1.13	char map_mark = (char )calloc (MAGIC_MAP_SIZE * MAGIC_MAP_SIZE, 1);
371	root	1.5	int xmin, xmax, ymin, ymax;
372
373			if (pl->type != PLAYER)
374			{
375			LOG (llevError, "Non player object called draw_map.\n");
376			return;
377			}
378
379			/* First, we figure out what spaces are 'reachable' by the player */
380			magic_mapping_mark (pl, map_mark, 3);
381
382			/* We now go through and figure out what spaces have been
383			* marked, and thus figure out rectangular region we send
384			* to the client (eg, if only a 10x10 area is visible, we only
385			* want to send those 100 spaces.)
386			*/
387			xmin = MAGIC_MAP_SIZE;
388			ymin = MAGIC_MAP_SIZE;
389			xmax = 0;
390			ymax = 0;
391	root	1.13
392			for (int x = 0; x < MAGIC_MAP_SIZE; x++)
393			for (int y = 0; y < MAGIC_MAP_SIZE; y++)
394	root	1.25	if (map_mark[x + pl->map->width * y] \| FACE_FLOOR)
395	root	1.5	{
396	root	1.13	xmin = x < xmin ? x : xmin;
397			xmax = x > xmax ? x : xmax;
398			ymin = y < ymin ? y : ymin;
399			ymax = y > ymax ? y : ymax;
400	root	1.2	}
401	elmex	1.1
402	root	1.15	packet sl;
403	root	1.13	sl.printf ("magicmap %d %d %d %d ", (xmax - xmin + 1), (ymax - ymin + 1),
404			MAGIC_MAP_HALF - xmin, MAGIC_MAP_HALF - ymin);
405
406			for (int y = ymin; y <= ymax; y++)
407			for (int x = xmin; x <= xmax; x++)
408			sl << uint8 (map_mark[x + MAGIC_MAP_SIZE * y] & ~FACE_FLOOR);
409
410	root	1.23	pl->contr->ns->send_packet (sl);
411	root	1.5
412			free (map_mark);
413	elmex	1.1	}
414