server/random_maps/random_map.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 (©) 2001 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>
 */

#include <time.h>
#include <stdio.h>
#include <global.h>
#include <random_map.h>
#include <rproto.h>
#include <sproto.h>

#define CEDE coroapi::cede_to_tick ()

static void symmetrize_layout (Layout &maze, random_map_params *RP);
static void rotate_layout (Layout &maze, int rotation);

noinline SV *
random_map_params::get_sv (const char *option) const
{
  SV **he = hv_fetch (hv, option, strlen (option), 0);

  return he ? *he : 0;
}

noinline const_utf8_string
random_map_params::get_str (const char *option, const_utf8_string fallback) const
{
  SV *sv = get_sv (option);
  return sv ? cfSvPVutf8_nolen (sv) : fallback;
}

noinline IV
random_map_params::get_iv (const char *option, IV fallback) const
{
  SV *sv = get_sv (option);
  return sv ? SvIV (sv) : fallback;
}

noinline UV
random_map_params::get_uv (const char *option, UV fallback) const
{
  SV *sv = get_sv (option);
  return sv ? SvUV (sv) : fallback;
}

noinline NV
random_map_params::get_nv (const char *option, NV fallback) const
{
  SV *sv = get_sv (option);
  return sv ? SvNV (sv) : fallback;
}

noinline void
random_map_params::set (const char *option, SV *value) const
{
  int len = strlen (option);

  if (value)
    hv_store  (hv, option, len, value, 0);
  else
    hv_delete (hv, option, len, G_DISCARD);
}

noinline void
random_map_params::set (const char *option, const_utf8_string value) const
{
  set (option, value && *value ? newSVpvn_utf8 (value, strlen (value), 1) : 0);
}

void
random_map_params::set (const char *option, IV value) const
{
  set (option, newSViv (value));
}

void
random_map_params::set (const char *option, UV value) const
{
  set (option, newSVuv (value));
}

void
random_map_params::set (const char *option, NV value) const
{
  set (option, newSVnv (value));
}

void
random_map_params::hv_clone ()
{
  HV *copy = newHV ();

  hv_iterinit (hv);

  // does not work for utf-8 keys
  while (HE *he = hv_iternext (hv))
    {
      STRLEN klen; const char *key = HePV (he, klen);
      hv_store (copy, key, klen, newSVsv (HeVAL (he)), HeHASH (he));
    }

  SvREFCNT_dec (hv);
  hv = copy;
}

shstr_tmp
random_map_params::as_shstr () const
{
  set ("xsize"              , xsize);
  set ("ysize"              , ysize);
  set ("monsterstyle"       , monsterstyle);
  set ("exit_on_final_map"  , exit_on_final_map);
  set ("layoutstyle"        , layoutstyle);
  set ("doorstyle"          , doorstyle);
  set ("final_map"          , final_map);
  set ("this_map"           , this_map);
  set ("expand2x"           , expand2x);
  set ("layoutoptions1"     , layoutoptions1);
  set ("layoutoptions2"     , layoutoptions2);
  set ("layoutoptions3"     , layoutoptions3);
  set ("symmetry"           , symmetry);
  set ("dungeon_depth"      , dungeon_depth);
  set ("orientation"        , orientation);
  set ("origin_x"           , origin_x);
  set ("origin_y"           , origin_y);
  set ("random_seed"        , (UV)random_seed);
  set ("difficulty"         , difficulty && difficulty_given ? difficulty : 0);
  set ("difficulty_increase", difficulty_increase);
  set ("dungeon_level"      , dungeon_level);

  dynbuf_text buf;
  hv_iterinit (hv);

  // does not work for utf-8 keys
  while (HE *he = hv_iternext (hv))
    {
      STRLEN klen; const char *key   = HePV (he, klen);
      STRLEN vlen; const char *value = SvPVutf8 (HeVAL (he), vlen);

      buf.fadd (key, klen);
      buf << ' ';
      buf.fadd (value, vlen);
      buf << '\n';
    }

  return shstr (buf);
}

random_map_params::~random_map_params ()
{
  SvREFCNT_dec (hv);
}

/* takes a map and makes it symmetric: adjusts Xsize and
 * Ysize to produce a symmetric map.
 */
static void
symmetrize_layout (Layout &layout, random_map_params *RP)
{
  if (RP->symmetry_used == SYMMETRY_NONE)
    return;

  Layout sym_layout (
    RP->symmetry_used == SYMMETRY_X || RP->symmetry_used == SYMMETRY_XY ? layout.w * 2 - 3 : layout.w,
    RP->symmetry_used == SYMMETRY_Y || RP->symmetry_used == SYMMETRY_XY ? layout.h * 2 - 3 : layout.h
  );

  if (RP->symmetry_used == SYMMETRY_X)
    for (int i = 0; i < sym_layout.w / 2 + 1; i++)
      for (int j = 0; j < sym_layout.h; j++)
        {
          sym_layout[i                   ][j] =
          sym_layout[sym_layout.w - i - 1][j] = layout[i][j];
        }

  if (RP->symmetry_used == SYMMETRY_Y)
    for (int i = 0; i < sym_layout.w; i++)
      for (int j = 0; j < sym_layout.h / 2 + 1; j++)
        {
          sym_layout[i][j                   ] =
          sym_layout[i][sym_layout.h - j - 1] = layout[i][j];
        }

  if (RP->symmetry_used == SYMMETRY_XY)
    for (int i = 0; i < sym_layout.w / 2 + 1; i++)
      for (int j = 0; j < sym_layout.h / 2 + 1; j++)
        {
          sym_layout[i                   ][j                   ] =
          sym_layout[i                   ][sym_layout.h - j - 1] =
          sym_layout[sym_layout.w - i - 1][j                   ] =
          sym_layout[sym_layout.w - i - 1][sym_layout.h - j - 1] = layout[i][j];
        }

  /* need to run the isolation remover for some layouts */
  switch (RP->map_layout_style)
    {
      case LAYOUT_ONION:
      case LAYOUT_SNAKE:
      case LAYOUT_SQUARE_SPIRAL:
        // safe
        break;

      default:
        sym_layout.isolation_remover ();
        break;
    }

  layout.swap (sym_layout);
}

/*  takes  a map and rotates it.  This completes the
    onion layouts, making them possibly centered on any wall. 
    It'll modify Xsize and Ysize if they're swapped.
*/
static void
rotate_layout (Layout &layout, int rotation)
{
  int w = layout.w;
  int h = layout.h;

  switch (rotation)
    {
      case 2:                  /* a reflection */
        {
          Layout new_layout (w, h);

          for (int i = 0; i < w; i++)                   /* copy a reflection back */
            for (int j = 0; j < h; j++)
              new_layout[i][j] = layout[w - i - 1][h - j - 1];

          layout.swap (new_layout);
        }
        break;

      case 1:
      case 3:
        {
          Layout new_layout (h, w);

          if (rotation == 1)    /* swap x and y */
            for (int i = 0; i < w; i++)
              for (int j = 0; j < h; j++)
                new_layout[j][i] = layout[i][j];

          if (rotation == 3) /* swap x and y */
            for (int i = 0; i < w; i++)
              for (int j = 0; j < h; j++)
                new_layout[j][i] = layout[w - i - 1][h - j - 1];

          layout.swap (new_layout);
        }
        break;
    }
}

/*  checks the layout to see if I can stick a horizontal(dir = 0) wall
    (or vertical, dir == 1)
    here which ends up on other walls sensibly.  */
static int
can_make_wall (char **maze, int dx, int dy, int dir, random_map_params *RP)
{
  int i1;
  int length = 0;

  /* dont make walls if we're on the edge. */
  if (dx == 0 || dx == (RP->Xsize - 1) || dy == 0 || dy == (RP->Ysize - 1))
    return -1;

  /* don't make walls if we're ON a wall. */
  if (maze[dx][dy] != 0)
    return -1;

  if (dir == 0)                 /* horizontal */
    {
      int y = dy;

      for (i1 = dx - 1; i1 > 0; i1--)
        {
          int sindex = surround_flag2 (maze, i1, y, RP);

          if (sindex == 1)
            break;
          if (sindex != 0)
            return -1;          /* can't make horiz.  wall here */
          if (maze[i1][y] != 0)
            return -1;          /* can't make horiz.  wall here */
          length++;
        }

      for (i1 = dx + 1; i1 < RP->Xsize - 1; i1++)
        {
          int sindex = surround_flag2 (maze, i1, y, RP);

          if (sindex == 2)
            break;
          if (sindex != 0)
            return -1;          /* can't make horiz.  wall here */
          if (maze[i1][y] != 0)
            return -1;          /* can't make horiz.  wall here */
          length++;
        }
      return length;
    }
  else
    {                           /* vertical */
      int x = dx;

      for (i1 = dy - 1; i1 > 0; i1--)
        {
          int sindex = surround_flag2 (maze, x, i1, RP);

          if (sindex == 4)
            break;
          if (sindex != 0)
            return -1;          /* can't make vert. wall here */
          if (maze[x][i1] != 0)
            return -1;          /* can't make horiz.  wall here */
          length++;
        }

      for (i1 = dy + 1; i1 < RP->Ysize - 1; i1++)
        {
          int sindex = surround_flag2 (maze, x, i1, RP);

          if (sindex == 8)
            break;
          if (sindex != 0)
            return -1;          /* can't make verti. wall here */
          if (maze[x][i1] != 0)
            return -1;          /* can't make horiz.  wall here */
          length++;
        }

      return length;
    }

  return -1;
}

/*  take a layout and make some rooms in it. 
    --works best on onions.*/
static void
roomify_layout (char **maze, random_map_params *RP)
{
  int tries = RP->Xsize * RP->Ysize / 30;

  for (int ti = 0; ti < tries; ti++)
    {
      /* starting location for looking at creating a door */
      int dx = rmg_rndm (RP->Xsize);
      int dy = rmg_rndm (RP->Ysize);

      /* results of checking on creating walls. */
      int cx = can_make_wall (maze, dx, dy, 0, RP); /* horizontal */
      int cy = can_make_wall (maze, dx, dy, 1, RP); /* vertical */

      if (cx == -1)
        {
          if (cy != -1)
            make_wall (maze, dx, dy, 1);

          continue;
        }

      if (cy == -1)
        {
          make_wall (maze, dx, dy, 0);
          continue;
        }

      if (cx < cy)
        make_wall (maze, dx, dy, 0);
      else
        make_wall (maze, dx, dy, 1);
    }
}

int
make_wall (char **maze, int x, int y, int dir)
{
  maze[x][y] = 'D';             /* mark a door */

  switch (dir)
    {
      case 0:                  /* horizontal */
        {
          for (int i1 = x - 1; maze[i1][y] == 0; --i1) maze[i1][y] = '#';
          for (int i1 = x + 1; maze[i1][y] == 0; ++i1) maze[i1][y] = '#';
          break;
        }
      case 1:                  /* vertical */
        {
          for (int i1 = y - 1; maze[x][i1] == 0; --i1) maze[x][i1] = '#';
          for (int i1 = y + 1; maze[x][i1] == 0; ++i1) maze[x][i1] = '#';
          break;
        }
    }

  return 0;
}

/*  puts doors at appropriate locations in a layout. */
static void
doorify_layout (char **maze, random_map_params *RP)
{
  int ndoors = RP->Xsize * RP->Ysize / 60;      /* reasonable number of doors. */
  int doorlocs = 0;             /* # of available doorlocations */

  uint16 *doorlist_x = salloc<uint16> (RP->Xsize * RP->Ysize);
  uint16 *doorlist_y = salloc<uint16> (RP->Xsize * RP->Ysize);

  /* make a list of possible door locations */
  for (int i = 1; i < RP->Xsize - 1; i++)
    for (int j = 1; j < RP->Ysize - 1; j++)
      {
        int sindex = surround_flag (maze, i, j, RP);

        if (sindex == 3 || sindex == 12)        /* these are possible door sindex */
          {
            doorlist_x[doorlocs] = i;
            doorlist_y[doorlocs] = j;
            doorlocs++;
          }
      }

  while (ndoors > 0 && doorlocs > 0)
    {
      int di = rmg_rndm (doorlocs);
      int i = doorlist_x[di];
      int j = doorlist_y[di];
      int sindex = surround_flag (maze, i, j, RP);

      if (sindex == 3 || sindex == 12)  /* these are possible door sindex */
        {
          maze[i][j] = 'D';
          ndoors--;
        }

      /* reduce the size of the list */
      doorlocs--;
      doorlist_x[di] = doorlist_x[doorlocs];
      doorlist_y[di] = doorlist_y[doorlocs];
    }

  sfree (doorlist_x, RP->Xsize * RP->Ysize);
  sfree (doorlist_y, RP->Xsize * RP->Ysize);
}

/*  function selects the layout function and gives it whatever
    arguments it needs.  */
void
Layout::generate (random_map_params *RP)
{
  switch (RP->map_layout_style)
    {
      case LAYOUT_ONION:
        map_gen_onion (*this, RP->layoutoptions1, RP->layoutoptions2);

        if (!(rmg_rndm (3)) && !(RP->layoutoptions1 & (RMOPT_WALLS_ONLY | RMOPT_WALL_OFF)))
          roomify_layout (*this, RP);

        break;

      case LAYOUT_MAZE:
        maze_gen (*this, RP->get_iv ("maze_type", rmg_rndm (4)));

        if (!(rmg_rndm (2)))
          doorify_layout (*this, RP);

        break;

      case LAYOUT_SPIRAL:
        map_gen_spiral (*this, RP->layoutoptions1);

        if (!(rmg_rndm (2)))
          doorify_layout (*this, RP);

        break;

      case LAYOUT_ROGUELIKE:
        /* Don't put symmetry in rogue maps.  There isn't much reason to
         * do so in the first place (doesn't make it any more interesting),
         * but more importantly, the symmetry code presumes we are symmetrizing
         * spirals, or maps with lots of passages - making a symmetric rogue
         * map fails because its likely that the passages the symmetry process
         * creates may not connect the rooms.
         */
        RP->symmetry_used = SYMMETRY_NONE;
        roguelike_layout_gen (*this, RP->layoutoptions1);
        /* no doorifying...  done already */
        break;

      case LAYOUT_SNAKE:
        make_snake_layout (*this, RP->layoutoptions1);

        if (rmg_rndm (2))
          roomify_layout (*this, RP);

        break;

      case LAYOUT_SQUARE_SPIRAL:
        make_square_spiral_layout (*this, RP->layoutoptions1);

        if (rmg_rndm (2))
          roomify_layout (*this, RP);

        break;

      case LAYOUT_CAVE:
        gen_cave (RP->get_iv ("cave_type", rmg_rndm (4)));

        if (!(rmg_rndm (2)))
          doorify_layout (*this, RP);

        break;

      default:
        abort ();
    }

  /*  rotate the layout randomly */
  rotate_layout (*this, rmg_rndm (4));

  symmetrize_layout (*this, RP);

#if 0
  print ();//D
#endif

  if (RP->expand2x)
    expand2x (*this);
}

bool
maptile::generate_random_map (random_map_params *RP)
{
  RP->Xsize = RP->xsize;
  RP->Ysize = RP->ysize;

  /* pick a random seed, or use the one from the input file */
  RP->random_seed = RP->random_seed
                       ? RP->random_seed + RP->dungeon_level
                       : time (0);

  // we run "single-threaded"
  rmg_rndm.seed (RP->random_seed);

  shstr buf = RP->as_shstr ();

  if (RP->difficulty == 0)
    {
      RP->difficulty = RP->dungeon_level;       /* use this instead of a map difficulty  */

      if (RP->difficulty_increase > 0.001)
        RP->difficulty = (int) ((float) RP->dungeon_level * RP->difficulty_increase);

      if (RP->difficulty < 1)
        RP->difficulty = 1;
    }
  else
    RP->difficulty_given = 1;

  if (RP->Xsize < MIN_RANDOM_MAP_SIZE)
    RP->Xsize = MIN_RANDOM_MAP_SIZE + rmg_rndm (25) + 5;

  if (RP->Ysize < MIN_RANDOM_MAP_SIZE)
    RP->Ysize = MIN_RANDOM_MAP_SIZE + rmg_rndm (25) + 5;

  min_it (RP->Xsize, MAX_RANDOM_MAP_SIZE);
  min_it (RP->Ysize, MAX_RANDOM_MAP_SIZE);

  if (RP->symmetry == SYMMETRY_RANDOM)
    RP->symmetry_used = rmg_rndm (SYMMETRY_XY) + 1;
  else
    RP->symmetry_used = RP->symmetry;

  if (RP->symmetry_used == SYMMETRY_Y || RP->symmetry_used == SYMMETRY_XY)
    RP->Ysize = RP->Ysize / 2 + 1;

  if (RP->symmetry_used == SYMMETRY_X || RP->symmetry_used == SYMMETRY_XY)
    RP->Xsize = RP->Xsize / 2 + 1;

  if (RP->expand2x > 0)
    {
      RP->Xsize /= 2;
      RP->Ysize /= 2;
    }

  if (strstr (RP->layoutstyle, "onion"))
    RP->map_layout_style = LAYOUT_ONION;
  else if (strstr (RP->layoutstyle, "maze"))
    RP->map_layout_style = LAYOUT_MAZE;
  else if (strstr (RP->layoutstyle, "spiral"))
    RP->map_layout_style = LAYOUT_SPIRAL;
  else if (strstr (RP->layoutstyle, "rogue"))
    RP->map_layout_style = LAYOUT_ROGUELIKE;
  else if (strstr (RP->layoutstyle, "snake"))
    RP->map_layout_style = LAYOUT_SNAKE;
  else if (strstr (RP->layoutstyle, "squarespiral"))
    RP->map_layout_style = LAYOUT_SQUARE_SPIRAL;
  else if (strstr (RP->layoutstyle, "cave"))
    RP->map_layout_style = LAYOUT_CAVE;
  else
    RP->map_layout_style = rmg_rndm (NROFLAYOUTS - 1) + 1; /* No style found - choose one randomly */

  Layout layout (RP->Xsize, RP->Ysize);
  layout.generate (RP);

  /* increment these for the current map */
  ++RP->dungeon_level;

  // need to patch RP becasue following code doesn't use the Layout object
  RP->Xsize = layout.w;
  RP->Ysize = layout.h;

  /* allocate the map and set the floor */
  make_map_floor (layout, RP->get_str ("floorstyle", ""), RP);

  /* set region */
  default_region = RP->region;

  CEDE;

  place_specials_in_map (this, layout, RP);

  CEDE;

  const char *wallstyle = RP->get_str ("wallstyle", 0);

  /* create walls unless the wallstyle is "none" */
  if (strcmp (wallstyle, "none"))
    {
      make_map_walls (this, layout, wallstyle, RP->get_str ("miningstyle", ""), RP);

      /* place doors unless doorstyle or wallstyle is "none" */
      if (strcmp (RP->doorstyle, "none"))
        put_doors (this, layout, RP->doorstyle, RP);
    }

  CEDE;

  const char *exitstyle = RP->get_str ("exitstyle", "");

  /* create exits unless the exitstyle is "none" */
  if (strcmp (exitstyle, "none"))
    place_exits (this, layout, exitstyle, RP->orientation, RP);

  CEDE;

  /* create monsters unless the monsterstyle is "none" */
  if (strcmp (RP->monsterstyle, "none"))
    place_monsters (this, RP->monsterstyle, RP->difficulty, RP);

  CEDE;

  /* treasures needs to have a proper difficulty set for the map. */
  difficulty = estimate_difficulty ();

  CEDE;

  const char *treasurestyle = RP->get_str ("treasurestyle", "");

  /* create treasure unless the treasurestyle is "none" */
  place_treasure (this, layout, treasurestyle, RP->get_iv ("treasureoptions"), RP);

  CEDE;

  const char *decorstyle = RP->get_str ("treasurestyle", "");

  /* create decor unless the decorstyle is "none" */
  if (strcmp (decorstyle, "none"))
    put_decor (this, layout, decorstyle, RP->get_iv ("decoroptions"), RP);

  CEDE;

  /* generate treasures, etc. */
  fix_auto_apply ();

  CEDE;

  unblock_exits (this, layout, RP);

  msg = buf;
  in_memory = MAP_ACTIVE;

  CEDE;

  return 1;
}

Revision:	1.59
Committed:	Thu Jul 1 01:22:44 2010 UTC (16 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.58:	+65 -71 lines
Log Message:	got rid of Layout, better memory management etc.
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.31	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	pippijn	1.20	*
4	root	1.47	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.46	* Copyright (©) 2001 Mark Wedel & Crossfire Development Team
6			* Copyright (©) 1992 Frank Tore Johansen
7	pippijn	1.20	*
8	root	1.42	* 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	1.20	*
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	root	1.30	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	pippijn	1.20	* GNU General Public License for more details.
17			*
18	root	1.42	* 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	1.30	*
22	root	1.31	* The authors can be reached via e-mail to <support@deliantra.net>
23	pippijn	1.20	*/
24	elmex	1.1
25			#include <time.h>
26			#include <stdio.h>
27			#include <global.h>
28			#include <random_map.h>
29			#include <rproto.h>
30			#include <sproto.h>
31
32	root	1.39	#define CEDE coroapi::cede_to_tick ()
33	root	1.22
34	root	1.59	static void symmetrize_layout (Layout &maze, random_map_params *RP);
35			static void rotate_layout (Layout &maze, int rotation);
36	root	1.33
37	root	1.55	noinline SV *
38			random_map_params::get_sv (const char *option) const
39	root	1.51	{
40			SV **he = hv_fetch (hv, option, strlen (option), 0);
41
42	root	1.55	return he ? *he : 0;
43	root	1.51	}
44
45	root	1.55	noinline const_utf8_string
46			random_map_params::get_str (const char *option, const_utf8_string fallback) const
47			{
48			SV *sv = get_sv (option);
49			return sv ? cfSvPVutf8_nolen (sv) : fallback;
50			}
51
52			noinline IV
53	root	1.51	random_map_params::get_iv (const char *option, IV fallback) const
54			{
55	root	1.55	SV *sv = get_sv (option);
56			return sv ? SvIV (sv) : fallback;
57			}
58
59			noinline UV
60			random_map_params::get_uv (const char *option, UV fallback) const
61			{
62			SV *sv = get_sv (option);
63			return sv ? SvUV (sv) : fallback;
64			}
65
66			noinline NV
67			random_map_params::get_nv (const char *option, NV fallback) const
68			{
69			SV *sv = get_sv (option);
70			return sv ? SvNV (sv) : fallback;
71			}
72
73			noinline void
74			random_map_params::set (const char option, SV value) const
75			{
76			int len = strlen (option);
77
78			if (value)
79			hv_store (hv, option, len, value, 0);
80			else
81			hv_delete (hv, option, len, G_DISCARD);
82			}
83
84			noinline void
85			random_map_params::set (const char *option, const_utf8_string value) const
86			{
87			set (option, value && *value ? newSVpvn_utf8 (value, strlen (value), 1) : 0);
88			}
89
90			void
91			random_map_params::set (const char *option, IV value) const
92			{
93			set (option, newSViv (value));
94			}
95
96			void
97			random_map_params::set (const char *option, UV value) const
98			{
99			set (option, newSVuv (value));
100			}
101
102			void
103			random_map_params::set (const char *option, NV value) const
104			{
105			set (option, newSVnv (value));
106			}
107
108			void
109			random_map_params::hv_clone ()
110			{
111			HV *copy = newHV ();
112
113			hv_iterinit (hv);
114
115			// does not work for utf-8 keys
116			while (HE *he = hv_iternext (hv))
117			{
118			STRLEN klen; const char *key = HePV (he, klen);
119			hv_store (copy, key, klen, newSVsv (HeVAL (he)), HeHASH (he));
120			}
121
122			SvREFCNT_dec (hv);
123			hv = copy;
124			}
125
126			shstr_tmp
127			random_map_params::as_shstr () const
128			{
129			set ("xsize" , xsize);
130			set ("ysize" , ysize);
131			set ("monsterstyle" , monsterstyle);
132			set ("exit_on_final_map" , exit_on_final_map);
133			set ("layoutstyle" , layoutstyle);
134			set ("doorstyle" , doorstyle);
135			set ("final_map" , final_map);
136			set ("this_map" , this_map);
137			set ("expand2x" , expand2x);
138			set ("layoutoptions1" , layoutoptions1);
139			set ("layoutoptions2" , layoutoptions2);
140			set ("layoutoptions3" , layoutoptions3);
141			set ("symmetry" , symmetry);
142			set ("dungeon_depth" , dungeon_depth);
143			set ("orientation" , orientation);
144			set ("origin_x" , origin_x);
145			set ("origin_y" , origin_y);
146			set ("random_seed" , (UV)random_seed);
147			set ("difficulty" , difficulty && difficulty_given ? difficulty : 0);
148			set ("difficulty_increase", difficulty_increase);
149			set ("dungeon_level" , dungeon_level);
150
151			dynbuf_text buf;
152			hv_iterinit (hv);
153
154			// does not work for utf-8 keys
155			while (HE *he = hv_iternext (hv))
156			{
157			STRLEN klen; const char *key = HePV (he, klen);
158			STRLEN vlen; const char *value = SvPVutf8 (HeVAL (he), vlen);
159
160			buf.fadd (key, klen);
161			buf << ' ';
162			buf.fadd (value, vlen);
163			buf << '\n';
164			}
165	root	1.51
166	root	1.55	return shstr (buf);
167	root	1.51	}
168
169			random_map_params::~random_map_params ()
170			{
171			SvREFCNT_dec (hv);
172			}
173
174	root	1.34	/* takes a map and makes it symmetric: adjusts Xsize and
175			* Ysize to produce a symmetric map.
176			*/
177	root	1.33	static void
178	root	1.59	symmetrize_layout (Layout &layout, random_map_params *RP)
179	root	1.3	{
180	root	1.33	if (RP->symmetry_used == SYMMETRY_NONE)
181			return;
182	root	1.32
183	root	1.34	Layout sym_layout (
184	root	1.59	RP->symmetry_used == SYMMETRY_X \|\| RP->symmetry_used == SYMMETRY_XY ? layout.w * 2 - 3 : layout.w,
185			RP->symmetry_used == SYMMETRY_Y \|\| RP->symmetry_used == SYMMETRY_XY ? layout.h * 2 - 3 : layout.h
186	root	1.33	);
187	root	1.32
188	root	1.33	if (RP->symmetry_used == SYMMETRY_X)
189	root	1.59	for (int i = 0; i < sym_layout.w / 2 + 1; i++)
190			for (int j = 0; j < sym_layout.h; j++)
191	root	1.3	{
192	root	1.59	sym_layout[i ][j] =
193			sym_layout[sym_layout.w - i - 1][j] = layout[i][j];
194	root	1.32	}
195
196	root	1.33	if (RP->symmetry_used == SYMMETRY_Y)
197	root	1.59	for (int i = 0; i < sym_layout.w; i++)
198			for (int j = 0; j < sym_layout.h / 2 + 1; j++)
199	root	1.3	{
200	root	1.59	sym_layout[i][j ] =
201			sym_layout[i][sym_layout.h - j - 1] = layout[i][j];
202	root	1.3	}
203	root	1.32
204	root	1.33	if (RP->symmetry_used == SYMMETRY_XY)
205	root	1.59	for (int i = 0; i < sym_layout.w / 2 + 1; i++)
206			for (int j = 0; j < sym_layout.h / 2 + 1; j++)
207	root	1.3	{
208	root	1.59	sym_layout[i ][j ] =
209			sym_layout[i ][sym_layout.h - j - 1] =
210			sym_layout[sym_layout.w - i - 1][j ] =
211			sym_layout[sym_layout.w - i - 1][sym_layout.h - j - 1] = layout[i][j];
212	root	1.3	}
213	root	1.32
214	root	1.59	/* need to run the isolation remover for some layouts */
215			switch (RP->map_layout_style)
216			{
217			case LAYOUT_ONION:
218			case LAYOUT_SNAKE:
219			case LAYOUT_SQUARE_SPIRAL:
220			// safe
221			break;
222
223			default:
224			sym_layout.isolation_remover ();
225			break;
226			}
227
228	root	1.34	layout.swap (sym_layout);
229	elmex	1.1	}
230
231			/* takes a map and rotates it. This completes the
232			onion layouts, making them possibly centered on any wall.
233			It'll modify Xsize and Ysize if they're swapped.
234			*/
235	root	1.33	static void
236	root	1.59	rotate_layout (Layout &layout, int rotation)
237	root	1.3	{
238	root	1.59	int w = layout.w;
239			int h = layout.h;
240	root	1.34
241	root	1.3	switch (rotation)
242			{
243	root	1.13	case 2: /* a reflection */
244	root	1.11	{
245	root	1.59	Layout new_layout (w, h);
246	root	1.32
247	root	1.34	for (int i = 0; i < w; i++) /* copy a reflection back */
248			for (int j = 0; j < h; j++)
249			new_layout[i][j] = layout[w - i - 1][h - j - 1];
250	root	1.11
251	root	1.59	layout.swap (new_layout);
252	root	1.11	}
253	root	1.34	break;
254	root	1.32
255	root	1.11	case 1:
256			case 3:
257			{
258	root	1.59	Layout new_layout (h, w);
259	root	1.32
260	root	1.13	if (rotation == 1) /* swap x and y */
261	root	1.34	for (int i = 0; i < w; i++)
262			for (int j = 0; j < h; j++)
263			new_layout[j][i] = layout[i][j];
264	root	1.3
265	root	1.32	if (rotation == 3) /* swap x and y */
266	root	1.34	for (int i = 0; i < w; i++)
267			for (int j = 0; j < h; j++)
268			new_layout[j][i] = layout[w - i - 1][h - j - 1];
269	root	1.33
270	root	1.59	layout.swap (new_layout);
271	root	1.11	}
272	root	1.34	break;
273	elmex	1.1	}
274			}
275
276			/* checks the layout to see if I can stick a horizontal(dir = 0) wall
277			(or vertical, dir == 1)
278			here which ends up on other walls sensibly. */
279	root	1.44	static int
280	root	1.13	can_make_wall (char *maze, int dx, int dy, int dir, random_map_params RP)
281	root	1.3	{
282	elmex	1.1	int i1;
283	root	1.3	int length = 0;
284	elmex	1.1
285			/* dont make walls if we're on the edge. */
286	root	1.3	if (dx == 0 \|\| dx == (RP->Xsize - 1) \|\| dy == 0 \|\| dy == (RP->Ysize - 1))
287			return -1;
288	elmex	1.1
289			/* don't make walls if we're ON a wall. */
290	root	1.3	if (maze[dx][dy] != 0)
291			return -1;
292	elmex	1.1
293	root	1.3	if (dir == 0) /* horizontal */
294	elmex	1.1	{
295			int y = dy;
296	root	1.3
297			for (i1 = dx - 1; i1 > 0; i1--)
298			{
299			int sindex = surround_flag2 (maze, i1, y, RP);
300
301			if (sindex == 1)
302			break;
303			if (sindex != 0)
304			return -1; /* can't make horiz. wall here */
305			if (maze[i1][y] != 0)
306			return -1; /* can't make horiz. wall here */
307			length++;
308			}
309
310			for (i1 = dx + 1; i1 < RP->Xsize - 1; i1++)
311			{
312			int sindex = surround_flag2 (maze, i1, y, RP);
313
314			if (sindex == 2)
315			break;
316			if (sindex != 0)
317			return -1; /* can't make horiz. wall here */
318			if (maze[i1][y] != 0)
319			return -1; /* can't make horiz. wall here */
320			length++;
321			}
322	elmex	1.1	return length;
323			}
324	root	1.3	else
325			{ /* vertical */
326			int x = dx;
327
328			for (i1 = dy - 1; i1 > 0; i1--)
329			{
330			int sindex = surround_flag2 (maze, x, i1, RP);
331
332			if (sindex == 4)
333			break;
334			if (sindex != 0)
335			return -1; /* can't make vert. wall here */
336			if (maze[x][i1] != 0)
337			return -1; /* can't make horiz. wall here */
338			length++;
339			}
340
341			for (i1 = dy + 1; i1 < RP->Ysize - 1; i1++)
342			{
343	root	1.43	int sindex = surround_flag2 (maze, x, i1, RP);
344
345			if (sindex == 8)
346			break;
347			if (sindex != 0)
348			return -1; /* can't make verti. wall here */
349			if (maze[x][i1] != 0)
350			return -1; /* can't make horiz. wall here */
351			length++;
352			}
353
354			return length;
355			}
356
357			return -1;
358			}
359
360			/* take a layout and make some rooms in it.
361			--works best on onions.*/
362	root	1.44	static void
363	root	1.43	roomify_layout (char *maze, random_map_params RP)
364			{
365			int tries = RP->Xsize * RP->Ysize / 30;
366
367	root	1.50	for (int ti = 0; ti < tries; ti++)
368	root	1.43	{
369	root	1.50	/* starting location for looking at creating a door */
370			int dx = rmg_rndm (RP->Xsize);
371			int dy = rmg_rndm (RP->Ysize);
372
373			/* results of checking on creating walls. */
374			int cx = can_make_wall (maze, dx, dy, 0, RP); /* horizontal */
375			int cy = can_make_wall (maze, dx, dy, 1, RP); /* vertical */
376	root	1.43
377			if (cx == -1)
378			{
379			if (cy != -1)
380			make_wall (maze, dx, dy, 1);
381
382			continue;
383			}
384
385			if (cy == -1)
386			{
387			make_wall (maze, dx, dy, 0);
388			continue;
389			}
390	root	1.3
391	root	1.43	if (cx < cy)
392			make_wall (maze, dx, dy, 0);
393			else
394			make_wall (maze, dx, dy, 1);
395	elmex	1.1	}
396			}
397
398	root	1.3	int
399			make_wall (char **maze, int x, int y, int dir)
400			{
401			maze[x][y] = 'D'; /* mark a door */
402	root	1.50
403	root	1.3	switch (dir)
404	elmex	1.1	{
405	root	1.13	case 0: /* horizontal */
406			{
407	root	1.50	for (int i1 = x - 1; maze[i1][y] == 0; --i1) maze[i1][y] = '#';
408			for (int i1 = x + 1; maze[i1][y] == 0; ++i1) maze[i1][y] = '#';
409	root	1.13	break;
410			}
411			case 1: /* vertical */
412			{
413	root	1.50	for (int i1 = y - 1; maze[x][i1] == 0; --i1) maze[x][i1] = '#';
414			for (int i1 = y + 1; maze[x][i1] == 0; ++i1) maze[x][i1] = '#';
415	root	1.13	break;
416			}
417	elmex	1.1	}
418
419			return 0;
420			}
421
422			/* puts doors at appropriate locations in a layout. */
423	root	1.44	static void
424	root	1.13	doorify_layout (char *maze, random_map_params RP)
425	root	1.3	{
426			int ndoors = RP->Xsize * RP->Ysize / 60; /* reasonable number of doors. */
427			int doorlocs = 0; /* # of available doorlocations */
428
429	root	1.41	uint16 doorlist_x = salloc<uint16> (RP->Xsize RP->Ysize);
430			uint16 doorlist_y = salloc<uint16> (RP->Xsize RP->Ysize);
431	elmex	1.1
432			/* make a list of possible door locations */
433	root	1.41	for (int i = 1; i < RP->Xsize - 1; i++)
434			for (int j = 1; j < RP->Ysize - 1; j++)
435	root	1.3	{
436			int sindex = surround_flag (maze, i, j, RP);
437
438			if (sindex == 3 \|\| sindex == 12) /* these are possible door sindex */
439			{
440			doorlist_x[doorlocs] = i;
441			doorlist_y[doorlocs] = j;
442			doorlocs++;
443			}
444			}
445	root	1.12
446	root	1.3	while (ndoors > 0 && doorlocs > 0)
447			{
448	root	1.41	int di = rmg_rndm (doorlocs);
449			int i = doorlist_x[di];
450			int j = doorlist_y[di];
451			int sindex = surround_flag (maze, i, j, RP);
452	root	1.27
453	root	1.3	if (sindex == 3 \|\| sindex == 12) /* these are possible door sindex */
454			{
455			maze[i][j] = 'D';
456			ndoors--;
457	elmex	1.1	}
458	root	1.27
459	root	1.3	/* reduce the size of the list */
460			doorlocs--;
461			doorlist_x[di] = doorlist_x[doorlocs];
462			doorlist_y[di] = doorlist_y[doorlocs];
463	elmex	1.1	}
464	root	1.12
465	root	1.32	sfree (doorlist_x, RP->Xsize * RP->Ysize);
466			sfree (doorlist_y, RP->Xsize * RP->Ysize);
467	elmex	1.1	}
468
469	root	1.43	/* function selects the layout function and gives it whatever
470			arguments it needs. */
471	root	1.59	void
472			Layout::generate (random_map_params *RP)
473	root	1.43	{
474			switch (RP->map_layout_style)
475			{
476			case LAYOUT_ONION:
477	root	1.59	map_gen_onion (*this, RP->layoutoptions1, RP->layoutoptions2);
478	root	1.43
479	root	1.50	if (!(rmg_rndm (3)) && !(RP->layoutoptions1 & (RMOPT_WALLS_ONLY \| RMOPT_WALL_OFF)))
480	root	1.59	roomify_layout (*this, RP);
481	root	1.43
482			break;
483
484			case LAYOUT_MAZE:
485	root	1.59	maze_gen (*this, RP->get_iv ("maze_type", rmg_rndm (4)));
486	root	1.43
487			if (!(rmg_rndm (2)))
488	root	1.59	doorify_layout (*this, RP);
489	root	1.43
490			break;
491
492			case LAYOUT_SPIRAL:
493	root	1.59	map_gen_spiral (*this, RP->layoutoptions1);
494	root	1.43
495			if (!(rmg_rndm (2)))
496	root	1.59	doorify_layout (*this, RP);
497	root	1.43
498			break;
499
500			case LAYOUT_ROGUELIKE:
501			/* Don't put symmetry in rogue maps. There isn't much reason to
502			* do so in the first place (doesn't make it any more interesting),
503			* but more importantly, the symmetry code presumes we are symmetrizing
504			* spirals, or maps with lots of passages - making a symmetric rogue
505			* map fails because its likely that the passages the symmetry process
506			* creates may not connect the rooms.
507			*/
508			RP->symmetry_used = SYMMETRY_NONE;
509	root	1.59	roguelike_layout_gen (*this, RP->layoutoptions1);
510	root	1.43	/* no doorifying... done already */
511			break;
512
513			case LAYOUT_SNAKE:
514	root	1.59	make_snake_layout (*this, RP->layoutoptions1);
515	root	1.43
516			if (rmg_rndm (2))
517	root	1.59	roomify_layout (*this, RP);
518	root	1.43
519			break;
520
521			case LAYOUT_SQUARE_SPIRAL:
522	root	1.59	make_square_spiral_layout (*this, RP->layoutoptions1);
523	root	1.43
524			if (rmg_rndm (2))
525	root	1.59	roomify_layout (*this, RP);
526	root	1.43
527			break;
528
529	root	1.57	case LAYOUT_CAVE:
530	root	1.59	gen_cave (RP->get_iv ("cave_type", rmg_rndm (4)));
531	root	1.57
532			if (!(rmg_rndm (2)))
533	root	1.59	doorify_layout (*this, RP);
534	root	1.57
535			break;
536
537	root	1.43	default:
538			abort ();
539			}
540
541			/* rotate the layout randomly */
542	root	1.59	rotate_layout (*this, rmg_rndm (4));
543	root	1.43
544	root	1.59	symmetrize_layout (*this, RP);
545	root	1.58
546	root	1.59	#if 0
547			print ();//D
548	root	1.43	#endif
549
550			if (RP->expand2x)
551	root	1.59	expand2x (*this);
552	root	1.43	}
553
554			bool
555			maptile::generate_random_map (random_map_params *RP)
556			{
557			RP->Xsize = RP->xsize;
558			RP->Ysize = RP->ysize;
559
560			/* pick a random seed, or use the one from the input file */
561			RP->random_seed = RP->random_seed
562			? RP->random_seed + RP->dungeon_level
563			: time (0);
564
565			// we run "single-threaded"
566			rmg_rndm.seed (RP->random_seed);
567
568	root	1.55	shstr buf = RP->as_shstr ();
569	root	1.43
570			if (RP->difficulty == 0)
571			{
572			RP->difficulty = RP->dungeon_level; /* use this instead of a map difficulty */
573
574			if (RP->difficulty_increase > 0.001)
575			RP->difficulty = (int) ((float) RP->dungeon_level * RP->difficulty_increase);
576
577			if (RP->difficulty < 1)
578			RP->difficulty = 1;
579			}
580			else
581			RP->difficulty_given = 1;
582
583			if (RP->Xsize < MIN_RANDOM_MAP_SIZE)
584			RP->Xsize = MIN_RANDOM_MAP_SIZE + rmg_rndm (25) + 5;
585
586			if (RP->Ysize < MIN_RANDOM_MAP_SIZE)
587			RP->Ysize = MIN_RANDOM_MAP_SIZE + rmg_rndm (25) + 5;
588
589	root	1.58	min_it (RP->Xsize, MAX_RANDOM_MAP_SIZE);
590			min_it (RP->Ysize, MAX_RANDOM_MAP_SIZE);
591
592	root	1.43	if (RP->symmetry == SYMMETRY_RANDOM)
593			RP->symmetry_used = rmg_rndm (SYMMETRY_XY) + 1;
594			else
595			RP->symmetry_used = RP->symmetry;
596
597			if (RP->symmetry_used == SYMMETRY_Y \|\| RP->symmetry_used == SYMMETRY_XY)
598			RP->Ysize = RP->Ysize / 2 + 1;
599
600			if (RP->symmetry_used == SYMMETRY_X \|\| RP->symmetry_used == SYMMETRY_XY)
601			RP->Xsize = RP->Xsize / 2 + 1;
602
603			if (RP->expand2x > 0)
604			{
605			RP->Xsize /= 2;
606			RP->Ysize /= 2;
607			}
608
609			if (strstr (RP->layoutstyle, "onion"))
610			RP->map_layout_style = LAYOUT_ONION;
611			else if (strstr (RP->layoutstyle, "maze"))
612			RP->map_layout_style = LAYOUT_MAZE;
613			else if (strstr (RP->layoutstyle, "spiral"))
614			RP->map_layout_style = LAYOUT_SPIRAL;
615			else if (strstr (RP->layoutstyle, "rogue"))
616			RP->map_layout_style = LAYOUT_ROGUELIKE;
617			else if (strstr (RP->layoutstyle, "snake"))
618			RP->map_layout_style = LAYOUT_SNAKE;
619			else if (strstr (RP->layoutstyle, "squarespiral"))
620			RP->map_layout_style = LAYOUT_SQUARE_SPIRAL;
621	root	1.57	else if (strstr (RP->layoutstyle, "cave"))
622			RP->map_layout_style = LAYOUT_CAVE;
623	root	1.43	else
624	root	1.59	RP->map_layout_style = rmg_rndm (NROFLAYOUTS - 1) + 1; /* No style found - choose one randomly */
625	root	1.43
626	root	1.59	Layout layout (RP->Xsize, RP->Ysize);
627			layout.generate (RP);
628	root	1.43
629			/* increment these for the current map */
630			++RP->dungeon_level;
631
632			// need to patch RP becasue following code doesn't use the Layout object
633	root	1.59	RP->Xsize = layout.w;
634			RP->Ysize = layout.h;
635	root	1.43
636			/* allocate the map and set the floor */
637	root	1.51	make_map_floor (layout, RP->get_str ("floorstyle", ""), RP);
638	root	1.43
639			/* set region */
640			default_region = RP->region;
641
642			CEDE;
643
644			place_specials_in_map (this, layout, RP);
645
646			CEDE;
647
648	root	1.51	const char *wallstyle = RP->get_str ("wallstyle", 0);
649
650	root	1.43	/* create walls unless the wallstyle is "none" */
651	root	1.51	if (strcmp (wallstyle, "none"))
652	root	1.43	{
653	root	1.51	make_map_walls (this, layout, wallstyle, RP->get_str ("miningstyle", ""), RP);
654	root	1.43
655			/* place doors unless doorstyle or wallstyle is "none" */
656			if (strcmp (RP->doorstyle, "none"))
657			put_doors (this, layout, RP->doorstyle, RP);
658			}
659
660			CEDE;
661
662	root	1.51	const char *exitstyle = RP->get_str ("exitstyle", "");
663
664	root	1.43	/* create exits unless the exitstyle is "none" */
665	root	1.51	if (strcmp (exitstyle, "none"))
666			place_exits (this, layout, exitstyle, RP->orientation, RP);
667	root	1.43
668			CEDE;
669
670			/* create monsters unless the monsterstyle is "none" */
671			if (strcmp (RP->monsterstyle, "none"))
672			place_monsters (this, RP->monsterstyle, RP->difficulty, RP);
673
674			CEDE;
675
676			/* treasures needs to have a proper difficulty set for the map. */
677			difficulty = estimate_difficulty ();
678
679			CEDE;
680
681	root	1.55	const char *treasurestyle = RP->get_str ("treasurestyle", "");
682
683	root	1.43	/* create treasure unless the treasurestyle is "none" */
684	root	1.55	place_treasure (this, layout, treasurestyle, RP->get_iv ("treasureoptions"), RP);
685	root	1.43
686			CEDE;
687
688	root	1.55	const char *decorstyle = RP->get_str ("treasurestyle", "");
689
690	root	1.43	/* create decor unless the decorstyle is "none" */
691	root	1.55	if (strcmp (decorstyle, "none"))
692			put_decor (this, layout, decorstyle, RP->get_iv ("decoroptions"), RP);
693	root	1.43
694			CEDE;
695
696			/* generate treasures, etc. */
697			fix_auto_apply ();
698
699			CEDE;
700
701			unblock_exits (this, layout, RP);
702
703	root	1.51	msg = buf;
704	root	1.43	in_memory = MAP_ACTIVE;
705
706			CEDE;
707
708			return 1;
709			}
710