server/socket/info.C


/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2002 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at <crossfire@schmorp.de>
*/

/**
 * \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>

/**
 * 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_socket * ns, int color, const char *str)
{
  packet sl;
  sl.printf ("drawinfo %d %s", color, str);
  ns->send_packet (sl);
}

/**
 * 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_socket * ns, int color, uint8 type, uint8 subtype, const char *message)
{
  packet sl;

  sl.printf ("drawextinfo %d %hhu %hhu %s", color, type, subtype, message);
  ns->send_packet (sl);
}

/**
 * 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->socket, colr, (char *) tmp);
}

/**
 * Prints out the contents of specified buffer structures,
 * and clears the string.
 */

void
flush_output_element (const object *pl, Output_Buf * outputs)
{
  char tbuf[MAX_BUF];

  if (outputs->buf == NULL)
    return;
  if (outputs->count > 1)
    {
      snprintf (tbuf, MAX_BUF, "%d times %s", outputs->count, &outputs->buf);
      print_message (NDI_BLACK, pl, tbuf);
    }
  else
    print_message (NDI_BLACK, pl, &outputs->buf);

  outputs->buf = NULL;
  outputs->first_update = 0;    /* This way, it will be reused */
}

/**
 * Sends message to player through output buffers.
 * \param pl player to send message
 * \param buf message to send
 *
 * If player's output_count is 1, sends message directly.
 *
 * Else checks output buffers for specified message.
 *
 * If found, checks if message should be sent now.
 *
 * If message not already in buffers, flushes olders buffer,
 * and adds message to queue.
 */

static void
check_output_buffers (const object *pl, const char *buf)
{
  int i, oldest = 0;

  if (pl->contr->outputs_count < 2)
    {
      print_message (NDI_BLACK, pl, buf);
      return;
    }
  else
    {
      for (i = 0; i < NUM_OUTPUT_BUFS; i++)
        {
          if (pl->contr->outputs[i].buf && !strcmp (buf, pl->contr->outputs[i].buf))
            break;
          else if (pl->contr->outputs[i].first_update < pl->contr->outputs[oldest].first_update)
            oldest = i;
        }
      /* We found a match */
      if (i < NUM_OUTPUT_BUFS)
        {
          pl->contr->outputs[i].count++;
          if (pl->contr->outputs[i].count >= pl->contr->outputs_count)
            {
              flush_output_element (pl, &pl->contr->outputs[i]);
            }
        }
      /* No match - flush the oldest, and put the new one in */
      else
        {
          flush_output_element (pl, &pl->contr->outputs[oldest]);

          pl->contr->outputs[oldest].first_update = pticks;
          pl->contr->outputs[oldest].count = 1;
          pl->contr->outputs[oldest].buf = buf;
        }
    }
}


/**
 * 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 *pl, const char *buf)
{

  if (flags & NDI_ALL)
    {
      player *tmppl;

      for (tmppl = first_player; tmppl != NULL; tmppl = tmppl->next)
        new_draw_info ((flags & ~NDI_ALL), pri, tmppl->ob, buf);

      return;
    }

  if (!pl || (pl->type == PLAYER && pl->contr == NULL))
    {
      /* Write to the socket? */
      print_message (0, NULL, buf);
      return;
    }

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

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

  if ((flags & NDI_COLOR_MASK) == NDI_BLACK && !(flags & NDI_UNIQUE))
    /* following prints stuff out, as appropriate */
    check_output_buffers (pl, buf);
  else
    print_message (flags & NDI_COLOR_MASK, pl, 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->socket, 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->socket, 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->socket, 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->socket, 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)
{
  player *pl;

  for (pl = first_player; pl != NULL; pl = pl->next)
    if (pl->ob != NULL && 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)
{
  player *pl;

  for (pl = first_player; pl != NULL; pl = pl->next)
    if (pl->ob != NULL && 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)
{
  player *pl;

  for (pl = first_player; pl != NULL; pl = pl->next)
    if (pl->ob != NULL && pl->ob->map == map)
      {
        new_draw_info (color, 0, pl->ob, str);
      }
}


/**
 * This does nothing now.  However, in theory, we should probably send
 * something to the client and let the client figure out how it might want
 * to handle this
 */
void
clear_win_info (object *op)
{
}

/**
 * Get player's current range attack in obuf.
 */
void
rangetostring (object *pl, char *obuf)
{
  switch (pl->contr->shoottype)
    {
      case range_none:
        strcpy (obuf, "Range: nothing");
        break;

      case range_bow:
        {
          object *op;

          for (op = pl->inv; op; op = op->below)
            if (op->type == BOW && QUERY_FLAG (op, FLAG_APPLIED))
              break;

          if (op == NULL)
            break;

          sprintf (obuf, "Range: %s (%s)", query_base_name (op, 0), op->race ? (const char *) op->race : "nothing");
        }
        break;

      case range_magic:
        if (settings.casting_time == TRUE)
          {
            if (pl->casting_time > -1)
              {
                if (pl->casting_time == 0)
                  sprintf (obuf, "Range: Holding spell (%s)", &pl->spell->name);
                else
                  sprintf (obuf, "Range: Casting spell (%s)", &pl->spell->name);
              }
            else
              sprintf (obuf, "Range: spell (%s)", &pl->contr->ranges[range_magic]->name);
          }
        else
          sprintf (obuf, "Range: spell (%s)", &pl->contr->ranges[range_magic]->name);
        break;

      case range_misc:
        sprintf (obuf, "Range: %s", pl->contr->ranges[range_misc] ? query_base_name (pl->contr->ranges[range_misc], 0) : "none");
        break;

        /* range_scroll is only used for controlling golems.  If the
         * the player does not have a golem, reset some things.
         */
      case range_golem:
        if (pl->contr->ranges[range_golem] != NULL)
          sprintf (obuf, "Range: golem (%s)", &pl->contr->ranges[range_golem]->name);
        else
          {
            pl->contr->shoottype = range_none;
            strcpy (obuf, "Range: nothing");
          }
        break;

      case range_skill:
        sprintf (obuf, "Skill: %s", pl->chosen_skill != NULL ? (const char *) pl->chosen_skill->name : "none");
        break;

      case range_builder:
        sprintf (obuf, "Builder: %s", query_base_name (pl->contr->ranges[range_builder], 0));
        break;

      default:
        strcpy (obuf, "Range: illegal");
    }
}

/**
 * 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);
}


/**
 * 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;
  New_Face *f;

  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)
            {
              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);

              /* 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 | (f ? f->magicmap : 0);
              else
                {
                  map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR | (f ? f->magicmap : 0);
                  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 initialized
 * 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;
  New_Face *f;

  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;
          else
            {
              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);
            }

          if (mflags & P_BLOCKSVIEW)
            map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL | (f ? f->magicmap : 0);
          else
            {
              map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR | (f ? f->magicmap : 0);
              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 + MAP_WIDTH (pl->map) * 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);

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

  free (map_mark);
}


/**
 * Send a kill log record to sockets
 */

void
Log_Kill (const char *Who, const char *What, int WhatType, const char *With, int WithType)
{
  size_t len;
  char buf[MAX_BUF];

  if (With != NULL)
    snprintf (buf, MAX_BUF, "%s\t%s\t%d\t%s\t%d\n", Who, What, WhatType, With, WithType);
  else
    snprintf (buf, MAX_BUF, "%s\t%s\t%d\n", Who, What, WhatType);

  len = strlen (buf);
}
Revision:	1.18
Committed:	Thu Dec 14 05:09:32 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.17:	+1 -6 lines
Log Message:	- remove some old socket mode cruft - preliminarily added attachable client_socket interface to perl (untested but also unreachable from perl code atm)
#	Content
1
2	/*
3	CrossFire, A Multiplayer game for X-windows
4
5	Copyright (C) 2002 Mark Wedel & Crossfire Development Team
6	Copyright (C) 1992 Frank Tore Johansen
7
8	This program 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 2 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, write to the Free Software
20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22	The authors can be reached via e-mail at <crossfire@schmorp.de>
23	*/
24
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	/**
42	* Draws a normal message on the client. It is pretty
43	* much the same thing as the draw_info above, but takes a color
44	* parameter. the esrv_drawinfo functions should probably be
45	* replaced with this, just using black as the color.
46	*/
47	static void
48	esrv_print_msg (client_socket * ns, int color, const char *str)
49	{
50	packet sl;
51	sl.printf ("drawinfo %d %s", color, str);
52	ns->send_packet (sl);
53	}
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	static void
65	esrv_print_ext_msg (client_socket * ns, int color, uint8 type, uint8 subtype, const char *message)
66	{
67	packet sl;
68
69	sl.printf ("drawextinfo %d %hhu %hhu %s", color, type, subtype, message);
70	ns->send_packet (sl);
71	}
72
73	/**
74	* Frontend for esrv_print_msg
75	* \param colr message color
76	* \param pl player to send to. Can be NULL
77	* \param tmp message to send. Can be NULL
78	*
79	* If pl is NULL or without contr set, writes message to log.
80	*
81	* Else sends message to player via esrv_print_msg
82	*/
83
84	static void
85	print_message (int colr, const object pl, const char tmp)
86	{
87
88	if (!tmp)
89	tmp = "[NULL]";
90
91	if (!pl \|\| (pl->type == PLAYER && pl->contr == NULL))
92	return;
93
94	if (pl->type == PLAYER)
95	esrv_print_msg (pl->contr->socket, colr, (char *) tmp);
96	}
97
98	/**
99	* Prints out the contents of specified buffer structures,
100	* and clears the string.
101	*/
102
103	void
104	flush_output_element (const object pl, Output_Buf outputs)
105	{
106	char tbuf[MAX_BUF];
107
108	if (outputs->buf == NULL)
109	return;
110	if (outputs->count > 1)
111	{
112	snprintf (tbuf, MAX_BUF, "%d times %s", outputs->count, &outputs->buf);
113	print_message (NDI_BLACK, pl, tbuf);
114	}
115	else
116	print_message (NDI_BLACK, pl, &outputs->buf);
117
118	outputs->buf = NULL;
119	outputs->first_update = 0; /* This way, it will be reused */
120	}
121
122	/**
123	* Sends message to player through output buffers.
124	* \param pl player to send message
125	* \param buf message to send
126	*
127	* If player's output_count is 1, sends message directly.
128	*
129	* Else checks output buffers for specified message.
130	*
131	* If found, checks if message should be sent now.
132	*
133	* If message not already in buffers, flushes olders buffer,
134	* and adds message to queue.
135	*/
136
137	static void
138	check_output_buffers (const object pl, const char buf)
139	{
140	int i, oldest = 0;
141
142	if (pl->contr->outputs_count < 2)
143	{
144	print_message (NDI_BLACK, pl, buf);
145	return;
146	}
147	else
148	{
149	for (i = 0; i < NUM_OUTPUT_BUFS; i++)
150	{
151	if (pl->contr->outputs[i].buf && !strcmp (buf, pl->contr->outputs[i].buf))
152	break;
153	else if (pl->contr->outputs[i].first_update < pl->contr->outputs[oldest].first_update)
154	oldest = i;
155	}
156	/* We found a match */
157	if (i < NUM_OUTPUT_BUFS)
158	{
159	pl->contr->outputs[i].count++;
160	if (pl->contr->outputs[i].count >= pl->contr->outputs_count)
161	{
162	flush_output_element (pl, &pl->contr->outputs[i]);
163	}
164	}
165	/* No match - flush the oldest, and put the new one in */
166	else
167	{
168	flush_output_element (pl, &pl->contr->outputs[oldest]);
169
170	pl->contr->outputs[oldest].first_update = pticks;
171	pl->contr->outputs[oldest].count = 1;
172	pl->contr->outputs[oldest].buf = buf;
173	}
174	}
175	}
176
177
178
179	/**
180	* Sends message to player(s).
181	*
182	* flags is various flags - mostly color, plus a few specials.
183	*
184	* pri is priority. It is a little odd - the lower the value, the more
185	* important it is. Thus, 0 gets sent no matter what. Otherwise, the
186	* value must be less than the listening level that the player has set.
187	* Unfortunately, there is no clear guideline on what each level does what.
188	*
189	* pl can be passed as NULL - in fact, this will be done if NDI_ALL is set
190	* in the flags.
191	*
192	* If message is black, and not NDI_UNIQUE, gets sent through output buffers.
193	*
194	*/
195
196	void
197	new_draw_info (int flags, int pri, const object pl, const char buf)
198	{
199
200	if (flags & NDI_ALL)
201	{
202	player *tmppl;
203
204	for (tmppl = first_player; tmppl != NULL; tmppl = tmppl->next)
205	new_draw_info ((flags & ~NDI_ALL), pri, tmppl->ob, buf);
206
207	return;
208	}
209
210	if (!pl \|\| (pl->type == PLAYER && pl->contr == NULL))
211	{
212	/* Write to the socket? */
213	print_message (0, NULL, buf);
214	return;
215	}
216
217	if (pl->type != PLAYER)
218	return;
219
220	if (pri >= pl->contr->listening)
221	return;
222
223	if ((flags & NDI_COLOR_MASK) == NDI_BLACK && !(flags & NDI_UNIQUE))
224	/* following prints stuff out, as appropriate */
225	check_output_buffers (pl, buf);
226	else
227	print_message (flags & NDI_COLOR_MASK, pl, buf);
228	}
229
230	/**
231	* Wrapper for new_draw_info printf-like.
232	*
233	* This is a pretty trivial function, but it allows us to use printf style
234	* formatting, so instead of the calling function having to do it, we do
235	* it here. It may also have advantages in the future for reduction of
236	* client/server bandwidth (client could keep track of various strings
237	*/
238
239	void
240	new_draw_info_format (int flags, int pri, const object pl, const char format, ...)
241	{
242	char buf[HUGE_BUF];
243
244	va_list ap;
245
246	va_start (ap, format);
247
248	vsnprintf (buf, HUGE_BUF, format, ap);
249
250	va_end (ap);
251
252	new_draw_info (flags, pri, pl, buf);
253	}
254
255
256	void
257	draw_ext_info (int flags, int pri, const object pl, uint8 type, uint8 subtype, const char message, const char *oldmessage)
258	{
259
260	if (!pl \|\| (pl->type != PLAYER) \|\| (pl->contr == NULL))
261	return;
262
263	if (pri >= pl->contr->listening)
264	return;
265
266	if (!CLIENT_SUPPORT_READABLES (pl->contr->socket, type))
267	{
268	char buf = (char ) malloc (strlen (oldmessage == NULL ? message : oldmessage) + 1);
269
270	if (buf == NULL)
271	LOG (llevError, "info::draw_ext_info -> Out of memory!");
272	else
273	{
274	strcpy (buf, oldmessage == NULL ? message : oldmessage);
275	strip_media_tag (buf);
276	new_draw_info (flags, pri, pl, buf);
277	free (buf);
278	}
279	}
280	else
281	esrv_print_ext_msg (pl->contr->socket, flags & NDI_COLOR_MASK, type, subtype, message);
282	}
283
284	void
285	draw_ext_info_format (int flags, int pri, const object pl, uint8 type, uint8 subtype, const char old_format, char *new_format, ...)
286	{
287
288	char buf[HUGE_BUF];
289
290	if (!pl \|\| (pl->type != PLAYER) \|\| (pl->contr == NULL))
291	return;
292
293	if (pri >= pl->contr->listening)
294	return;
295
296	if (!CLIENT_SUPPORT_READABLES (pl->contr->socket, type))
297	{
298	va_list ap;
299
300	LOG (llevDebug, "Non supported extension text type for client.\n");
301	va_start (ap, new_format);
302	vsnprintf (buf, HUGE_BUF, old_format, ap);
303	va_end (ap);
304	new_draw_info (flags, pri, pl, buf);
305	return;
306	}
307	else
308	{
309	va_list ap;
310
311	va_start (ap, new_format);
312	vsnprintf (buf, HUGE_BUF, new_format, ap);
313	va_end (ap);
314	strip_media_tag (buf);
315	esrv_print_ext_msg (pl->contr->socket, flags & NDI_COLOR_MASK, type, subtype, buf);
316	}
317	}
318
319	/**
320	* Writes to everyone on the map except op. This is useful for emotions.
321	*/
322
323	void
324	new_info_map_except (int color, maptile * map, object op, const char str)
325	{
326	player *pl;
327
328	for (pl = first_player; pl != NULL; pl = pl->next)
329	if (pl->ob != NULL && pl->ob->map == map && pl->ob != op)
330	{
331	new_draw_info (color, 0, pl->ob, str);
332	}
333	}
334
335	/**
336	* Writes to everyone on the map except op1 and op2
337	*/
338
339	void
340	new_info_map_except2 (int color, maptile * map, object op1, object op2, const char *str)
341	{
342	player *pl;
343
344	for (pl = first_player; pl != NULL; pl = pl->next)
345	if (pl->ob != NULL && pl->ob->map == map && pl->ob != op1 && pl->ob != op2)
346	{
347	new_draw_info (color, 0, pl->ob, str);
348	}
349	}
350
351	/**
352	* Writes to everyone on the specified map
353	*/
354
355	void
356	new_info_map (int color, maptile * map, const char *str)
357	{
358	player *pl;
359
360	for (pl = first_player; pl != NULL; pl = pl->next)
361	if (pl->ob != NULL && pl->ob->map == map)
362	{
363	new_draw_info (color, 0, pl->ob, str);
364	}
365	}
366
367
368	/**
369	* This does nothing now. However, in theory, we should probably send
370	* something to the client and let the client figure out how it might want
371	* to handle this
372	*/
373	void
374	clear_win_info (object *op)
375	{
376	}
377
378	/**
379	* Get player's current range attack in obuf.
380	*/
381	void
382	rangetostring (object pl, char obuf)
383	{
384	switch (pl->contr->shoottype)
385	{
386	case range_none:
387	strcpy (obuf, "Range: nothing");
388	break;
389
390	case range_bow:
391	{
392	object *op;
393
394	for (op = pl->inv; op; op = op->below)
395	if (op->type == BOW && QUERY_FLAG (op, FLAG_APPLIED))
396	break;
397
398	if (op == NULL)
399	break;
400
401	sprintf (obuf, "Range: %s (%s)", query_base_name (op, 0), op->race ? (const char *) op->race : "nothing");
402	}
403	break;
404
405	case range_magic:
406	if (settings.casting_time == TRUE)
407	{
408	if (pl->casting_time > -1)
409	{
410	if (pl->casting_time == 0)
411	sprintf (obuf, "Range: Holding spell (%s)", &pl->spell->name);
412	else
413	sprintf (obuf, "Range: Casting spell (%s)", &pl->spell->name);
414	}
415	else
416	sprintf (obuf, "Range: spell (%s)", &pl->contr->ranges[range_magic]->name);
417	}
418	else
419	sprintf (obuf, "Range: spell (%s)", &pl->contr->ranges[range_magic]->name);
420	break;
421
422	case range_misc:
423	sprintf (obuf, "Range: %s", pl->contr->ranges[range_misc] ? query_base_name (pl->contr->ranges[range_misc], 0) : "none");
424	break;
425
426	/* range_scroll is only used for controlling golems. If the
427	* the player does not have a golem, reset some things.
428	*/
429	case range_golem:
430	if (pl->contr->ranges[range_golem] != NULL)
431	sprintf (obuf, "Range: golem (%s)", &pl->contr->ranges[range_golem]->name);
432	else
433	{
434	pl->contr->shoottype = range_none;
435	strcpy (obuf, "Range: nothing");
436	}
437	break;
438
439	case range_skill:
440	sprintf (obuf, "Skill: %s", pl->chosen_skill != NULL ? (const char *) pl->chosen_skill->name : "none");
441	break;
442
443	case range_builder:
444	sprintf (obuf, "Builder: %s", query_base_name (pl->contr->ranges[range_builder], 0));
445	break;
446
447	default:
448	strcpy (obuf, "Range: illegal");
449	}
450	}
451
452	/**
453	* Sets player title.
454	*/
455	void
456	set_title (object pl, char buf)
457	{
458	/* Eneq(@csd.uu.se): Let players define their own titles. */
459	if (pl->contr->own_title[0] == '\0')
460	sprintf (buf, "Player: %s the %s", (const char ) pl->name, (const char ) pl->contr->title);
461	else
462	sprintf (buf, "Player: %s %s", (const char ) pl->name, (const char ) pl->contr->own_title);
463	}
464
465
466	/**
467	* Helper for magic map creation.
468	*
469	* Takes a player, the map_mark array and an x and y starting position.
470	* pl is the player.
471	* px, py are offsets from the player.
472	*
473	* This function examines all the adjacant spaces next to px, py.
474	* It updates the map_mark arrow with the color and high bits set
475	* for various code values.
476	*/
477	static void
478	magic_mapping_mark_recursive (object pl, char map_mark, int px, int py)
479	{
480	int x, y, dx, dy, mflags;
481	sint16 nx, ny;
482	maptile *mp;
483	New_Face *f;
484
485	for (dx = -1; dx <= 1; dx++)
486	{
487	for (dy = -1; dy <= 1; dy++)
488	{
489	x = px + dx;
490	y = py + dy;
491
492	if (FABS (x) >= MAGIC_MAP_HALF \|\| FABS (y) >= MAGIC_MAP_HALF)
493	continue;
494
495	mp = pl->map;
496	nx = pl->x + x;
497	ny = pl->y + y;
498
499	mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
500	if (mflags & P_OUT_OF_MAP)
501	continue;
502
503	if (map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] == 0)
504	{
505	f = GET_MAP_FACE (mp, nx, ny, 0);
506	if (f == blank_face)
507	f = GET_MAP_FACE (mp, nx, ny, 1);
508	if (f == blank_face)
509	f = GET_MAP_FACE (mp, nx, ny, 2);
510
511	/* Should probably have P_NO_MAGIC here also, but then shops don't
512	* work.
513	*/
514	if (mflags & P_BLOCKSVIEW)
515	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| (f ? f->magicmap : 0);
516	else
517	{
518	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| (f ? f->magicmap : 0);
519	magic_mapping_mark_recursive (pl, map_mark, x, y);
520	}
521	}
522	}
523	}
524	}
525
526
527	/**
528	* Creates magic map for player.
529	*
530	* Note: For improved magic mapping display, the space that blocks
531	* the view is now marked with value 2. Any dependencies of map_mark
532	* being nonzero have been changed to check for 1. Also, since
533	* map_mark is a char value, putting 2 in should cause no problems.
534	*
535	* This function examines the map the player is on, and determines what
536	* is visible. 2 is set for walls or objects that blocks view. 1
537	* is for open spaces. map_mark should already have been initialized
538	* to zero before this is called.
539	* strength is an initial strength*2 rectangular area that we automatically
540	* see in/penetrate through.
541	*/
542
543	void
544	magic_mapping_mark (object pl, char map_mark, int strength)
545	{
546	int x, y, mflags;
547	sint16 nx, ny;
548	maptile *mp;
549	New_Face *f;
550
551	for (x = -strength; x < strength; x++)
552	{
553	for (y = -strength; y < strength; y++)
554	{
555	mp = pl->map;
556	nx = pl->x + x;
557	ny = pl->y + y;
558	mflags = get_map_flags (pl->map, &mp, nx, ny, &nx, &ny);
559	if (mflags & P_OUT_OF_MAP)
560	continue;
561	else
562	{
563	f = GET_MAP_FACE (mp, nx, ny, 0);
564	if (f == blank_face)
565	f = GET_MAP_FACE (mp, nx, ny, 1);
566	if (f == blank_face)
567	f = GET_MAP_FACE (mp, nx, ny, 2);
568	}
569
570	if (mflags & P_BLOCKSVIEW)
571	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_WALL \| (f ? f->magicmap : 0);
572	else
573	{
574	map_mark[MAGIC_MAP_HALF + x + MAGIC_MAP_SIZE * (MAGIC_MAP_HALF + y)] = FACE_FLOOR \| (f ? f->magicmap : 0);
575	magic_mapping_mark_recursive (pl, map_mark, x, y);
576	}
577	}
578	}
579	}
580
581
582	/**
583	* Creates and sends magic map to player.
584	*
585	* The following function is a lot messier than it really should be,
586	* but there is no real easy solution.
587	*
588	* Mark Wedel
589	*/
590
591	void
592	draw_magic_map (object *pl)
593	{
594	char map_mark = (char )calloc (MAGIC_MAP_SIZE * MAGIC_MAP_SIZE, 1);
595	int xmin, xmax, ymin, ymax;
596
597	if (pl->type != PLAYER)
598	{
599	LOG (llevError, "Non player object called draw_map.\n");
600	return;
601	}
602
603	/* First, we figure out what spaces are 'reachable' by the player */
604	magic_mapping_mark (pl, map_mark, 3);
605
606	/* We now go through and figure out what spaces have been
607	* marked, and thus figure out rectangular region we send
608	* to the client (eg, if only a 10x10 area is visible, we only
609	* want to send those 100 spaces.)
610	*/
611	xmin = MAGIC_MAP_SIZE;
612	ymin = MAGIC_MAP_SIZE;
613	xmax = 0;
614	ymax = 0;
615
616	for (int x = 0; x < MAGIC_MAP_SIZE; x++)
617	for (int y = 0; y < MAGIC_MAP_SIZE; y++)
618	if (map_mark[x + MAP_WIDTH (pl->map) * y] \| FACE_FLOOR)
619	{
620	xmin = x < xmin ? x : xmin;
621	xmax = x > xmax ? x : xmax;
622	ymin = y < ymin ? y : ymin;
623	ymax = y > ymax ? y : ymax;
624	}
625
626	packet sl;
627	sl.printf ("magicmap %d %d %d %d ", (xmax - xmin + 1), (ymax - ymin + 1),
628	MAGIC_MAP_HALF - xmin, MAGIC_MAP_HALF - ymin);
629
630	for (int y = ymin; y <= ymax; y++)
631	for (int x = xmin; x <= xmax; x++)
632	sl << uint8 (map_mark[x + MAGIC_MAP_SIZE * y] & ~FACE_FLOOR);
633
634	Send_With_Handling (pl->contr->socket, &sl);
635
636	free (map_mark);
637	}
638
639
640	/**
641	* Send a kill log record to sockets
642	*/
643
644	void
645	Log_Kill (const char Who, const char What, int WhatType, const char *With, int WithType)
646	{
647	size_t len;
648	char buf[MAX_BUF];
649
650	if (With != NULL)
651	snprintf (buf, MAX_BUF, "%s\t%s\t%d\t%s\t%d\n", Who, What, WhatType, With, WithType);
652	else
653	snprintf (buf, MAX_BUF, "%s\t%s\t%d\n", Who, What, WhatType);
654
655	len = strlen (buf);
656	}