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Thrown torch's dice is changed
[hengband/hengband.git] / src / rooms.c
index 2e8850b..a6f6b04 100644 (file)
@@ -4,11 +4,11 @@
  */
 
 /*
- * Copyright (c) 1989 James E. Wilson, Robert A. Koeneke
+ * Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke
  *
- * This software may be copied and distributed for educational, research, and
- * not for profit purposes provided that this copyright and statement are
- * included in all such copies.
+ * This software may be copied and distributed for educational, research,
+ * and not for profit purposes provided that this copyright and statement
+ * are included in all such copies.  Other copyrights may also apply.
  */
 
 #include "angband.h"
 
 
 /*
- * Array of minimum room depths
+ * [from SAngband (originally from OAngband)]
+ *
+ * Table of values that control how many times each type of room will
+ * appear.  Each type of room has its own row, and each column
+ * corresponds to dungeon levels 0, 10, 20, and so on.  The final
+ * value is the minimum depth the room can appear at.  -LM-
+ *
+ * Level 101 and below use the values for level 100.
+ *
+ * Rooms with lots of monsters or loot may not be generated if the
+ * object or monster lists are already nearly full.  Rooms will not
+ * appear above their minimum depth.  Tiny levels will not have space
+ * for all the rooms you ask for.
  */
-static s16b roomdep[] =
+static room_info_type room_info_normal[ROOM_T_MAX] =
 {
-        0, /* 0  = Nothing */
-        1, /* 1  = Simple (33x11) */
-        1, /* 2  = Overlapping (33x11) */
-        3, /* 3  = Crossed (33x11) */
-        3, /* 4  = Large (33x11) */
-       10, /* 5  = Monster nest (33x11) */
-       10, /* 6  = Monster pit (33x11) */
-       10, /* 7  = Lesser vault (33x22) */
-       20, /* 8  = Greater vault (66x44) */
-        5, /* 9  = Fractal cave (42x24) */
-       10, /* 10 = Random vault (44x22) */
-        3, /* 11 = Circular rooms (22x22) */
-       10, /* 12 = Crypts (22x22) */
+       /* Depth */
+       /*  0  10  20  30  40  50  60  70  80  90 100  min limit */
+
+       {{999,900,800,700,600,500,400,300,200,100,  0},  0}, /*NORMAL   */
+       {{  1, 10, 20, 30, 40, 50, 60, 70, 80, 90,100},  1}, /*OVERLAP  */
+       {{  1, 10, 20, 30, 40, 50, 60, 70, 80, 90,100},  3}, /*CROSS    */
+       {{  1, 10, 20, 30, 40, 50, 60, 70, 80, 90,100},  3}, /*INNER_F  */
+       {{  0,  1,  1,  1,  2,  3,  5,  6,  8, 10, 13}, 10}, /*NEST     */
+       {{  0,  1,  1,  2,  3,  4,  6,  8, 10, 13, 16}, 10}, /*PIT      */
+       {{  0,  1,  1,  1,  2,  2,  3,  5,  6,  8, 10}, 10}, /*LESSER_V */
+       {{  0,  0,  1,  1,  1,  2,  2,  2,  3,  3,  4}, 20}, /*GREATER_V*/
+       {{  0,100,200,300,400,500,600,700,800,900,999}, 10}, /*FRACAVE  */
+       {{  0,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2}, 10}, /*RANDOM_V */
+       {{  0,  4,  8, 12, 16, 20, 24, 28, 32, 36, 40},  3}, /*OVAL     */
+       {{  1,  6, 12, 18, 24, 30, 36, 42, 48, 54, 60}, 10}, /*CRYPT    */
+       {{  0,  0,  1,  1,  1,  2,  3,  4,  5,  6,  8}, 20}, /*TRAP_PIT */
+       {{  0,  0,  1,  1,  1,  2,  3,  4,  5,  6,  8}, 20}, /*TRAP     */
+       {{  0,  0,  0,  0,  1,  1,  1,  2,  2,  2,  2}, 40}, /*GLASS    */
+       {{  1,  1,  1,  1,  1,  1,  1,  2,  2,  3,  3},  1}, /*ARCADE   */
+};
+
+
+/* Build rooms in descending order of difficulty. */
+static byte room_build_order[ROOM_T_MAX] = {
+       ROOM_T_GREATER_VAULT,
+       ROOM_T_ARCADE,
+       ROOM_T_RANDOM_VAULT,
+       ROOM_T_LESSER_VAULT,
+       ROOM_T_TRAP_PIT,
+       ROOM_T_PIT,
+       ROOM_T_NEST,
+       ROOM_T_TRAP,
+       ROOM_T_GLASS,
+       ROOM_T_INNER_FEAT,
+       ROOM_T_OVAL,
+       ROOM_T_CRYPT,
+       ROOM_T_OVERLAP,
+       ROOM_T_CROSS,
+       ROOM_T_FRACAVE,
+       ROOM_T_NORMAL,
 };
 
 
@@ -46,12 +85,13 @@ static void place_locked_door(int y, int x)
        }
        else
        {
-               set_cave_feat(y, x, FEAT_DOOR_HEAD+randint(7));
+               set_cave_feat(y, x, feat_locked_door_random((d_info[dungeon_type].flags1 & DF1_GLASS_DOOR) ? DOOR_GLASS_DOOR : DOOR_DOOR));
                cave[y][x].info &= ~(CAVE_FLOOR);
+               delete_monster(y, x);
        }
 }
 
-static void place_secret_door(int y, int x)
+static void place_secret_door(int y, int x, int type)
 {
        if (d_info[dungeon_type].flags1 & DF1_NO_DOORS)
        {
@@ -59,8 +99,36 @@ static void place_secret_door(int y, int x)
        }
        else
        {
-               set_cave_feat(y, x, FEAT_SECRET);
-               cave[y][x].info &= ~(CAVE_FLOOR);
+               cave_type *c_ptr = &cave[y][x];
+
+               if (type == DOOR_DEFAULT)
+               {
+                       type = ((d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+                               one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 16 : 256)) ? DOOR_CURTAIN :
+                               ((d_info[dungeon_type].flags1 & DF1_GLASS_DOOR) ? DOOR_GLASS_DOOR : DOOR_DOOR);
+               }
+
+               /* Create secret door */
+               place_closed_door(y, x, type);
+
+               if (type != DOOR_CURTAIN)
+               {
+                       /* Hide by inner wall because this is used in rooms only */
+                       c_ptr->mimic = feat_wall_inner;
+
+                       /* Floor type terrain cannot hide a door */
+                       if (feat_supports_los(c_ptr->mimic) && !feat_supports_los(c_ptr->feat))
+                       {
+                               if (have_flag(f_info[c_ptr->mimic].flags, FF_MOVE) || have_flag(f_info[c_ptr->mimic].flags, FF_CAN_FLY))
+                               {
+                                       c_ptr->feat = one_in_(2) ? c_ptr->mimic : floor_type[randint0(100)];
+                               }
+                               c_ptr->mimic = 0;
+                       }
+               }
+
+               c_ptr->info &= ~(CAVE_FLOOR);
+               delete_monster(y, x);
        }
 }
 
@@ -88,14 +156,17 @@ static void build_small_room(int x0, int y0)
        }
 
        /* Place a secret door on one side */
-       switch (rand_int(4))
+       switch (randint0(4))
        {
-               case 0: place_secret_door(y0, x0 - 1); break;
-               case 1: place_secret_door(y0, x0 + 1); break;
-               case 2: place_secret_door(y0 - 1, x0); break;
-               case 3: place_secret_door(y0 + 1, x0); break;
+               case 0: place_secret_door(y0, x0 - 1, DOOR_DEFAULT); break;
+               case 1: place_secret_door(y0, x0 + 1, DOOR_DEFAULT); break;
+               case 2: place_secret_door(y0 - 1, x0, DOOR_DEFAULT); break;
+               case 3: place_secret_door(y0 + 1, x0, DOOR_DEFAULT); break;
        }
 
+       /* Clear mimic type */
+       cave[y0][x0].mimic = 0;
+
        /* Add inner open space */
        place_floor_bold(y0, x0);
 }
@@ -182,92 +253,212 @@ static void check_room_boundary(int x1, int y1, int x2, int y2)
 
 
 /*
- * This function is used to allocate the space needed by a room in the room_map
- * array.
- * x, y represent the size of the room (0...x-1) by (0...y-1).
- * crowded is used to denote a monset nest.
- * by0, bx0 are the positions in the room_map array given to the build_type'x'
- * function.
- * xx, yy are the returned center of the allocated room in coordinates for
- * cave.feat and cave.info etc.
+ *  Helper function for find_space().
+ *
+ *  Is this a good location?
  */
-static bool room_alloc(int x, int y, bool crowded, int by0, int bx0, int *xx, int *yy)
+static bool find_space_aux(int blocks_high, int blocks_wide, int block_y, int block_x)
 {
-       int temp, bx1, bx2, by1, by2, by, bx;
+       int by1, bx1, by2, bx2, by, bx;
+
+       /* Itty-bitty rooms must shift about within their rectangle */
+       if (blocks_wide < 3)
+       {
+               if ((blocks_wide == 2) && (block_x % 3) == 2)
+                       return FALSE;
+       }
+
+       /* Rooms with width divisible by 3 must be fitted to a rectangle. */
+       else if ((blocks_wide % 3) == 0)
+       {
+               /* Must be aligned to the left edge of a 11x33 rectangle. */
+               if ((block_x % 3) != 0)
+                       return FALSE;
+       }
+
+       /*
+        * Big rooms that do not have a width divisible by 3 must be
+        * aligned towards the edge of the dungeon closest to them.
+        */
+       else
+       {
+               /* Shift towards left edge of dungeon. */
+               if (block_x + (blocks_wide / 2) <= dun->col_rooms / 2)
+               {
+                       if (((block_x % 3) == 2) && ((blocks_wide % 3) == 2))
+                               return FALSE;
+                       if ((block_x % 3) == 1)
+                               return FALSE;
+               }
+
+               /* Shift toward right edge of dungeon. */
+               else
+               {
+                       if (((block_x % 3) == 2) && ((blocks_wide % 3) == 2))
+                               return FALSE;
+                       if ((block_x % 3) == 1)
+                               return FALSE;
+               }
+       }
 
-       /* Calculate number of room_map squares to allocate */
+       /* Extract blocks */
+       by1 = block_y + 0;
+       bx1 = block_x + 0;
+       by2 = block_y + blocks_high;
+       bx2 = block_x + blocks_wide;
+
+       /* Never run off the screen */
+       if ((by1 < 0) || (by2 > dun->row_rooms)) return FALSE;
+       if ((bx1 < 0) || (bx2 > dun->col_rooms)) return FALSE;
+       
+       /* Verify available space */
+       for (by = by1; by < by2; by++)
+       {
+               for (bx = bx1; bx < bx2; bx++)
+               {
+                       if (dun->room_map[by][bx])
+                       {
+                               return FALSE;
+                       }
+               }
+       }
 
-       /* temp is total number along width */
-       temp = ((x - 1) / BLOCK_WID) + 1;
+       /* This location is okay */
+       return TRUE;
+}
 
-       /* bx2 = ending block */
-       bx2 = temp / 2 + bx0;
 
-       /* bx1 = starting block (Note: rounding taken care of here.) */
-       bx1 = bx2 + 1 - temp;
+/*
+ * Find a good spot for the next room.  -LM-
+ *
+ * Find and allocate a free space in the dungeon large enough to hold
+ * the room calling this function.
+ *
+ * We allocate space in 11x11 blocks, but want to make sure that rooms
+ * align neatly on the standard screen.  Therefore, we make them use
+ * blocks in few 11x33 rectangles as possible.
+ *
+ * Be careful to include the edges of the room in height and width!
+ *
+ * Return TRUE and values for the center of the room if all went well.
+ * Otherwise, return FALSE.
+ */
+static bool find_space(int *y, int *x, int height, int width)
+{
+       int candidates, pick;
+       int by, bx, by1, bx1, by2, bx2;
+       int block_y = 0, block_x = 0;
 
-       /* temp is total number along height */
-       temp = ((y - 1) / BLOCK_HGT) + 1;
 
-       /* by2 = ending block */
-       by2 = temp / 2 + by0;
+       /* Find out how many blocks we need. */
+       int blocks_high = 1 + ((height - 1) / BLOCK_HGT);
+       int blocks_wide = 1 + ((width - 1) / BLOCK_WID);
 
-       /* by1 = starting block */
-       by1 = by2 + 1 - temp;
+       /* There are no way to allocate such huge space */
+       if (dun->row_rooms < blocks_high) return FALSE;
+       if (dun->col_rooms < blocks_wide) return FALSE;
 
+       /* Initiallize */
+       candidates = 0;
 
-       /* Never run off the screen */
-       if ((by1 < 0) || (by2 >= dun->row_rooms)) return (FALSE);
-       if ((bx1 < 0) || (bx2 >= dun->col_rooms)) return (FALSE);
+       /* Count the number of valid places */
+       for (block_y = dun->row_rooms - blocks_high; block_y >= 0; block_y--)
+       {
+               for (block_x = dun->col_rooms - blocks_wide; block_x >= 0; block_x--)
+               {
+                       if (find_space_aux(blocks_high, blocks_wide, block_y, block_x))
+                       {
+                               /* Find a valid place */
+                               candidates++;
+                       }
+               }
+       }
+
+       /* No place! */
+       if (!candidates)
+       {
+               return FALSE;
+       }
+
+       /* Normal dungeon */
+       if (!(d_info[dungeon_type].flags1 & DF1_NO_CAVE))
+       {
+               /* Choose a random one */
+               pick = randint1(candidates);
+       }
+
+       /* NO_CAVE dungeon (Castle) */
+       else
+       {
+               /* Always choose the center one */
+               pick = candidates/2 + 1;
+       }
 
-       /* Verify open space */
-       for (by = by1; by <= by2; by++)
+       /* Pick up the choosen location */
+       for (block_y = dun->row_rooms - blocks_high; block_y >= 0; block_y--)
        {
-               for (bx = bx1; bx <= bx2; bx++)
+               for (block_x = dun->col_rooms - blocks_wide; block_x >= 0; block_x--)
                {
-                       if (dun->room_map[by][bx]) return (FALSE);
+                       if (find_space_aux(blocks_high, blocks_wide, block_y, block_x))
+                       {
+                               pick--;
+
+                               /* This one is picked? */
+                               if (!pick) break;
+                       }
                }
+
+               if (!pick) break;
        }
 
-       /* It is *extremely* important that the following calculation */
-       /* be *exactly* correct to prevent memory errors XXX XXX XXX */
+       /* Extract blocks */
+       by1 = block_y + 0;
+       bx1 = block_x + 0;
+       by2 = block_y + blocks_high;
+       bx2 = block_x + blocks_wide;
 
-       /* Acquire the location of the room */
-       *yy = ((by1 + by2 + 1) * BLOCK_HGT) / 2;
-       *xx = ((bx1 + bx2 + 1) * BLOCK_WID) / 2;
+       /*
+        * It is *extremely* important that the following calculation
+        * be *exactly* correct to prevent memory errors
+        */
 
+       /* Acquire the location of the room */
+       (*y) = ((by1 + by2) * BLOCK_HGT) / 2;
+       (*x) = ((bx1 + bx2) * BLOCK_WID) / 2;
 
        /* Save the room location */
        if (dun->cent_n < CENT_MAX)
        {
-               dun->cent[dun->cent_n].y = *yy;
-               dun->cent[dun->cent_n].x = *xx;
+               dun->cent[dun->cent_n].y = *y;
+               dun->cent[dun->cent_n].x = *x;
                dun->cent_n++;
        }
 
-       /* Reserve some blocks */
-       for (by = by1; by <= by2; by++)
+       /* Reserve some blocks. */
+       for (by = by1; by < by2; by++)
        {
-               for (bx = bx1; bx <= bx2; bx++)
+               for (bx = bx1; bx < bx2; bx++)
                {
                        dun->room_map[by][bx] = TRUE;
                }
        }
 
-       /* Count "crowded" rooms */
-       if (crowded) dun->crowded++;
 
        /*
         * Hack- See if room will cut off a cavern.
-        * If so, fix by tunneling outside the room in such a way as to connect the caves.
+        *
+        * If so, fix by tunneling outside the room in such a
+        * way as to connect the caves.
         */
-       check_room_boundary(*xx - x / 2 - 1, *yy - y / 2 - 1,
-                           *xx + (x - 1) / 2 + 1, *yy + (y - 1) / 2 + 1);
+       check_room_boundary(*x - width / 2 - 1, *y - height / 2 - 1, *x + (width - 1) / 2 + 1, *y + (height - 1) / 2 + 1);
 
-       /* Success */
-       return (TRUE);
+
+       /* Success. */
+       return TRUE;
 }
 
+
+
 /*
  * Room building routines.
  *
@@ -284,13 +475,17 @@ static bool room_alloc(int x, int y, bool crowded, int by0, int bx0, int *xx, in
  *  10 -- random vaults
  *  11 -- circular rooms
  *  12 -- crypts
+ *  13 -- trapped monster pits
+ *  14 -- trapped room
+ *  15 -- glass room
+ *  16 -- underground arcade
  */
 
 
 /*
  * Type 1 -- normal rectangular rooms
  */
-static void build_type1(int by0, int bx0)
+static bool build_type1(void)
 {
        int y, x, y2, x2, yval, xval;
        int y1, x1, xsize, ysize;
@@ -299,20 +494,36 @@ static void build_type1(int by0, int bx0)
 
        cave_type *c_ptr;
 
+       bool curtain = (d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+               one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 48 : 512);
+
        /* Pick a room size */
-       y1 = randint(4);
-       x1 = randint(11);
-       y2 = randint(3);
-       x2 = randint(11);
+       y1 = randint1(4);
+       x1 = randint1(11);
+       y2 = randint1(3);
+       x2 = randint1(11);
 
        xsize = x1 + x2 + 1;
        ysize = y1 + y2 + 1;
 
-       /* Try to allocate space for room.  If fails, exit */
-       if (!room_alloc(xsize + 2, ysize + 2, FALSE, by0, bx0, &xval, &yval)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, ysize + 2, xsize + 2))
+       {
+               /* Limit to the minimum room size, and retry */
+               y1 = 1;
+               x1 = 1;
+               y2 = 1;
+               x2 = 1;
+
+               xsize = x1 + x2 + 1;
+               ysize = y1 + y2 + 1;
+
+               /* Find and reserve some space in the dungeon.  Get center of room. */
+               if (!find_space(&yval, &xval, ysize + 2, xsize + 2)) return FALSE;
+       }
 
        /* Choose lite or dark */
-       light = ((dun_level <= randint(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
 
 
        /* Get corner values */
@@ -351,6 +562,30 @@ static void build_type1(int by0, int bx0)
        }
 
 
+       /* Hack -- Occasional curtained room */
+       if (curtain && (y2 - y1 > 2) && (x2 - x1 > 2))
+       {
+               for (y = y1; y <= y2; y++)
+               {
+                       c_ptr = &cave[y][x1];
+                       c_ptr->feat = feat_door[DOOR_CURTAIN].closed;
+                       c_ptr->info &= ~(CAVE_MASK);
+                       c_ptr = &cave[y][x2];
+                       c_ptr->feat = feat_door[DOOR_CURTAIN].closed;
+                       c_ptr->info &= ~(CAVE_MASK);
+               }
+               for (x = x1; x <= x2; x++)
+               {
+                       c_ptr = &cave[y1][x];
+                       c_ptr->feat = feat_door[DOOR_CURTAIN].closed;
+                       c_ptr->info &= ~(CAVE_MASK);
+                       c_ptr = &cave[y2][x];
+                       c_ptr->feat = feat_door[DOOR_CURTAIN].closed;
+                       c_ptr->info &= ~(CAVE_MASK);
+               }
+       }
+
+
        /* Hack -- Occasional pillar room */
        if (one_in_(20))
        {
@@ -404,12 +639,16 @@ static void build_type1(int by0, int bx0)
        /* Hack -- Occasional divided room */
        else if (one_in_(50))
        {
-               if (randint(100) < 50)
+               bool curtain2 = (d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+                       one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 2 : 128);
+
+               if (randint1(100) < 50)
                {
                        /* Horizontal wall */
                        for (x = x1; x <= x2; x++)
                        {
                                place_inner_bold(yval, x);
+                               if (curtain2) cave[yval][x].feat = feat_door[DOOR_CURTAIN].closed;
                        }
 
                        /* Prevent edge of wall from being tunneled */
@@ -422,6 +661,7 @@ static void build_type1(int by0, int bx0)
                        for (y = y1; y <= y2; y++)
                        {
                                place_inner_bold(y, xval);
+                               if (curtain2) cave[y][xval].feat = feat_door[DOOR_CURTAIN].closed;
                        }
 
                        /* Prevent edge of wall from being tunneled */
@@ -429,15 +669,18 @@ static void build_type1(int by0, int bx0)
                        place_solid_bold(y2 + 1, xval);
                }
 
-               place_random_door(yval, xval);
+               place_random_door(yval, xval, TRUE);
+               if (curtain2) cave[yval][xval].feat = feat_door[DOOR_CURTAIN].closed;
        }
+
+       return TRUE;
 }
 
 
 /*
  * Type 2 -- Overlapping rectangular rooms
  */
-static void build_type2(int by0, int bx0)
+static bool build_type2(void)
 {
        int                     y, x, xval, yval;
        int                     y1a, x1a, y2a, x2a;
@@ -445,24 +688,23 @@ static void build_type2(int by0, int bx0)
        bool            light;
        cave_type   *c_ptr;
 
-
-       /* Try to allocate space for room. If fails, exit */
-       if (!room_alloc(25, 11, FALSE, by0, bx0, &xval, &yval)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 11, 25)) return FALSE;
 
        /* Choose lite or dark */
-       light = ((dun_level <= randint(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
 
        /* Determine extents of the first room */
-       y1a = yval - randint(4);
-       y2a = yval + randint(3);
-       x1a = xval - randint(11);
-       x2a = xval + randint(10);
+       y1a = yval - randint1(4);
+       y2a = yval + randint1(3);
+       x1a = xval - randint1(11);
+       x2a = xval + randint1(10);
 
        /* Determine extents of the second room */
-       y1b = yval - randint(3);
-       y2b = yval + randint(4);
-       x1b = xval - randint(10);
-       x2b = xval + randint(11);
+       y1b = yval - randint1(3);
+       y2b = yval + randint1(4);
+       x1b = xval - randint1(10);
+       x2b = xval + randint1(11);
 
 
        /* Place a full floor for room "a" */
@@ -543,6 +785,8 @@ static void build_type2(int by0, int bx0)
                        place_floor_grid(c_ptr);
                }
        }
+
+       return TRUE;
 }
 
 
@@ -559,7 +803,7 @@ static void build_type2(int by0, int bx0)
  * the code below will work (with "bounds checking") for 5x5, or even
  * for unsymetric values like 4x3 or 5x3 or 3x4 or 3x5, or even larger.
  */
-static void build_type3(int by0, int bx0)
+static bool build_type3(void)
 {
        int                     y, x, dy, dx, wy, wx;
        int                     y1a, x1a, y2a, x2a;
@@ -569,11 +813,12 @@ static void build_type3(int by0, int bx0)
        cave_type   *c_ptr;
 
 
-       /* Try to allocate space for room. */
-       if (!room_alloc(25, 11, FALSE, by0, bx0, &xval, &yval)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 11, 25)) return FALSE;
+
 
        /* Choose lite or dark */
-       light = ((dun_level <= randint(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
 
        /* For now, always 3x3 */
        wx = wy = 1;
@@ -679,7 +924,7 @@ static void build_type3(int by0, int bx0)
 
 
        /* Special features (3/4) */
-       switch (rand_int(4))
+       switch (randint0(4))
        {
                /* Large solid middle pillar */
                case 1:
@@ -715,22 +960,22 @@ static void build_type3(int by0, int bx0)
                        }
 
                        /* Place a secret door on the inner room */
-                       switch (rand_int(4))
+                       switch (randint0(4))
                        {
-                               case 0: place_secret_door(y1b, xval); break;
-                               case 1: place_secret_door(y2b, xval); break;
-                               case 2: place_secret_door(yval, x1a); break;
-                               case 3: place_secret_door(yval, x2a); break;
+                               case 0: place_secret_door(y1b, xval, DOOR_DEFAULT); break;
+                               case 1: place_secret_door(y2b, xval, DOOR_DEFAULT); break;
+                               case 2: place_secret_door(yval, x1a, DOOR_DEFAULT); break;
+                               case 3: place_secret_door(yval, x2a, DOOR_DEFAULT); break;
                        }
 
                        /* Place a treasure in the vault */
-                       place_object(yval, xval, FALSE, FALSE);
+                       place_object(yval, xval, 0L);
 
                        /* Let's guard the treasure well */
-                       vault_monsters(yval, xval, rand_int(2) + 3);
+                       vault_monsters(yval, xval, randint0(2) + 3);
 
                        /* Traps naturally */
-                       vault_traps(yval, xval, 4, 4, rand_int(3) + 2);
+                       vault_traps(yval, xval, 4, 4, randint0(3) + 2);
 
                        break;
                }
@@ -764,10 +1009,14 @@ static void build_type3(int by0, int bx0)
                                /* Sometimes shut using secret doors */
                                if (one_in_(3))
                                {
-                                       place_secret_door(yval, x1a - 1);
-                                       place_secret_door(yval, x2a + 1);
-                                       place_secret_door(y1b - 1, xval);
-                                       place_secret_door(y2b + 1, xval);
+                                       int door_type = ((d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+                                               one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 16 : 256)) ? DOOR_CURTAIN :
+                                               ((d_info[dungeon_type].flags1 & DF1_GLASS_DOOR) ? DOOR_GLASS_DOOR : DOOR_DOOR);
+
+                                       place_secret_door(yval, x1a - 1, door_type);
+                                       place_secret_door(yval, x2a + 1, door_type);
+                                       place_secret_door(y1b - 1, xval, door_type);
+                                       place_secret_door(y2b + 1, xval, door_type);
                                }
                        }
 
@@ -796,6 +1045,8 @@ static void build_type3(int by0, int bx0)
                        break;
                }
        }
+
+       return TRUE;
 }
 
 
@@ -809,7 +1060,7 @@ static void build_type3(int by0, int bx0)
  *     4 - Inner room has a maze
  *     5 - A set of four inner rooms
  */
-static void build_type4(int by0, int bx0)
+static bool build_type4(void)
 {
        int         y, x, y1, x1;
        int         y2, x2, tmp, yval, xval;
@@ -817,11 +1068,11 @@ static void build_type4(int by0, int bx0)
        cave_type   *c_ptr;
 
 
-       /* Try to allocate space for room. */
-       if (!room_alloc(25, 11, FALSE, by0, bx0, &xval, &yval)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 11, 25)) return FALSE;
 
        /* Choose lite or dark */
-       light = ((dun_level <= randint(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
 
        /* Large room */
        y1 = yval - 4;
@@ -882,18 +1133,18 @@ static void build_type4(int by0, int bx0)
 
 
        /* Inner room variations */
-       switch (randint(5))
+       switch (randint1(5))
        {
                /* Just an inner room with a monster */
                case 1:
                {
                        /* Place a secret door */
-                       switch (randint(4))
+                       switch (randint1(4))
                        {
-                               case 1: place_secret_door(y1 - 1, xval); break;
-                               case 2: place_secret_door(y2 + 1, xval); break;
-                               case 3: place_secret_door(yval, x1 - 1); break;
-                               case 4: place_secret_door(yval, x2 + 1); break;
+                               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+                               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+                               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+                               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
                        }
 
                        /* Place a monster in the room */
@@ -906,12 +1157,12 @@ static void build_type4(int by0, int bx0)
                case 2:
                {
                        /* Place a secret door */
-                       switch (randint(4))
+                       switch (randint1(4))
                        {
-                               case 1: place_secret_door(y1 - 1, xval); break;
-                               case 2: place_secret_door(y2 + 1, xval); break;
-                               case 3: place_secret_door(yval, x1 - 1); break;
-                               case 4: place_secret_door(yval, x2 + 1); break;
+                               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+                               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+                               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+                               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
                        }
 
                        /* Place another inner room */
@@ -926,7 +1177,7 @@ static void build_type4(int by0, int bx0)
                        }
 
                        /* Place a locked door on the inner room */
-                       switch (randint(4))
+                       switch (randint1(4))
                        {
                                case 1: place_locked_door(yval - 1, xval); break;
                                case 2: place_locked_door(yval + 1, xval); break;
@@ -935,12 +1186,12 @@ static void build_type4(int by0, int bx0)
                        }
 
                        /* Monsters to guard the "treasure" */
-                       vault_monsters(yval, xval, randint(3) + 2);
+                       vault_monsters(yval, xval, randint1(3) + 2);
 
                        /* Object (80%) */
-                       if (rand_int(100) < 80)
+                       if (randint0(100) < 80)
                        {
-                               place_object(yval, xval, FALSE, FALSE);
+                               place_object(yval, xval, 0L);
                        }
 
                        /* Stairs (20%) */
@@ -950,7 +1201,7 @@ static void build_type4(int by0, int bx0)
                        }
 
                        /* Traps to protect the treasure */
-                       vault_traps(yval, xval, 4, 10, 2 + randint(3));
+                       vault_traps(yval, xval, 4, 10, 2 + randint1(3));
 
                        break;
                }
@@ -959,12 +1210,12 @@ static void build_type4(int by0, int bx0)
                case 3:
                {
                        /* Place a secret door */
-                       switch (randint(4))
+                       switch (randint1(4))
                        {
-                               case 1: place_secret_door(y1 - 1, xval); break;
-                               case 2: place_secret_door(y2 + 1, xval); break;
-                               case 3: place_secret_door(yval, x1 - 1); break;
-                               case 4: place_secret_door(yval, x2 + 1); break;
+                               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+                               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+                               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+                               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
                        }
 
                        /* Large Inner Pillar */
@@ -980,7 +1231,7 @@ static void build_type4(int by0, int bx0)
                        /* Occasionally, two more Large Inner Pillars */
                        if (one_in_(2))
                        {
-                               tmp = randint(2);
+                               tmp = randint1(2);
                                for (y = yval - 1; y <= yval + 1; y++)
                                {
                                        for (x = xval - 5 - tmp; x <= xval - 3 - tmp; x++)
@@ -999,6 +1250,10 @@ static void build_type4(int by0, int bx0)
                        /* Occasionally, some Inner rooms */
                        if (one_in_(3))
                        {
+                               int door_type = ((d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+                                       one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 16 : 256)) ? DOOR_CURTAIN :
+                                       ((d_info[dungeon_type].flags1 & DF1_GLASS_DOOR) ? DOOR_GLASS_DOOR : DOOR_DOOR);
+
                                /* Long horizontal walls */
                                for (x = xval - 5; x <= xval + 5; x++)
                                {
@@ -1015,16 +1270,16 @@ static void build_type4(int by0, int bx0)
                                place_inner_grid(c_ptr);
 
                                /* Secret doors (random top/bottom) */
-                               place_secret_door(yval - 3 + (randint(2) * 2), xval - 3);
-                               place_secret_door(yval - 3 + (randint(2) * 2), xval + 3);
+                               place_secret_door(yval - 3 + (randint1(2) * 2), xval - 3, door_type);
+                               place_secret_door(yval - 3 + (randint1(2) * 2), xval + 3, door_type);
 
                                /* Monsters */
-                               vault_monsters(yval, xval - 2, randint(2));
-                               vault_monsters(yval, xval + 2, randint(2));
+                               vault_monsters(yval, xval - 2, randint1(2));
+                               vault_monsters(yval, xval + 2, randint1(2));
 
                                /* Objects */
-                               if (one_in_(3)) place_object(yval, xval - 2, FALSE, FALSE);
-                               if (one_in_(3)) place_object(yval, xval + 2, FALSE, FALSE);
+                               if (one_in_(3)) place_object(yval, xval - 2, 0L);
+                               if (one_in_(3)) place_object(yval, xval + 2, 0L);
                        }
 
                        break;
@@ -1034,12 +1289,12 @@ static void build_type4(int by0, int bx0)
                case 4:
                {
                        /* Place a secret door */
-                       switch (randint(4))
+                       switch (randint1(4))
                        {
-                               case 1: place_secret_door(y1 - 1, xval); break;
-                               case 2: place_secret_door(y2 + 1, xval); break;
-                               case 3: place_secret_door(yval, x1 - 1); break;
-                               case 4: place_secret_door(yval, x2 + 1); break;
+                               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+                               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+                               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+                               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
                        }
 
                        /* Maze (really a checkerboard) */
@@ -1056,12 +1311,12 @@ static void build_type4(int by0, int bx0)
                        }
 
                        /* Monsters just love mazes. */
-                       vault_monsters(yval, xval - 5, randint(3));
-                       vault_monsters(yval, xval + 5, randint(3));
+                       vault_monsters(yval, xval - 5, randint1(3));
+                       vault_monsters(yval, xval + 5, randint1(3));
 
                        /* Traps make them entertaining. */
-                       vault_traps(yval, xval - 3, 2, 8, randint(3));
-                       vault_traps(yval, xval + 3, 2, 8, randint(3));
+                       vault_traps(yval, xval - 3, 2, 8, randint1(3));
+                       vault_traps(yval, xval + 3, 2, 8, randint1(3));
 
                        /* Mazes should have some treasure too. */
                        vault_objects(yval, xval, 3);
@@ -1072,6 +1327,10 @@ static void build_type4(int by0, int bx0)
                /* Four small rooms. */
                case 5:
                {
+                       int door_type = ((d_info[dungeon_type].flags1 & DF1_CURTAIN) &&
+                               one_in_((d_info[dungeon_type].flags1 & DF1_NO_CAVE) ? 16 : 256)) ? DOOR_CURTAIN :
+                               ((d_info[dungeon_type].flags1 & DF1_GLASS_DOOR) ? DOOR_GLASS_DOOR : DOOR_DOOR);
+
                        /* Inner "cross" */
                        for (y = y1; y <= y2; y++)
                        {
@@ -1085,35 +1344,37 @@ static void build_type4(int by0, int bx0)
                        }
 
                        /* Doors into the rooms */
-                       if (rand_int(100) < 50)
+                       if (randint0(100) < 50)
                        {
-                               int i = randint(10);
-                               place_secret_door(y1 - 1, xval - i);
-                               place_secret_door(y1 - 1, xval + i);
-                               place_secret_door(y2 + 1, xval - i);
-                               place_secret_door(y2 + 1, xval + i);
+                               int i = randint1(10);
+                               place_secret_door(y1 - 1, xval - i, door_type);
+                               place_secret_door(y1 - 1, xval + i, door_type);
+                               place_secret_door(y2 + 1, xval - i, door_type);
+                               place_secret_door(y2 + 1, xval + i, door_type);
                        }
                        else
                        {
-                               int i = randint(3);
-                               place_secret_door(yval + i, x1 - 1);
-                               place_secret_door(yval - i, x1 - 1);
-                               place_secret_door(yval + i, x2 + 1);
-                               place_secret_door(yval - i, x2 + 1);
+                               int i = randint1(3);
+                               place_secret_door(yval + i, x1 - 1, door_type);
+                               place_secret_door(yval - i, x1 - 1, door_type);
+                               place_secret_door(yval + i, x2 + 1, door_type);
+                               place_secret_door(yval - i, x2 + 1, door_type);
                        }
 
                        /* Treasure, centered at the center of the cross */
-                       vault_objects(yval, xval, 2 + randint(2));
+                       vault_objects(yval, xval, 2 + randint1(2));
 
                        /* Gotta have some monsters. */
-                       vault_monsters(yval + 1, xval - 4, randint(4));
-                       vault_monsters(yval + 1, xval + 4, randint(4));
-                       vault_monsters(yval - 1, xval - 4, randint(4));
-                       vault_monsters(yval - 1, xval + 4, randint(4));
+                       vault_monsters(yval + 1, xval - 4, randint1(4));
+                       vault_monsters(yval + 1, xval + 4, randint1(4));
+                       vault_monsters(yval - 1, xval - 4, randint1(4));
+                       vault_monsters(yval - 1, xval + 4, randint1(4));
 
                        break;
                }
        }
+
+       return TRUE;
 }
 
 
@@ -1134,10 +1395,10 @@ static void build_type4(int by0, int bx0)
  * Line 3 -- forbid aquatic monsters
  */
 #define vault_monster_okay(I) \
-       (monster_dungeon(I) && \
+       (mon_hook_dungeon(I) && \
         !(r_info[I].flags1 & RF1_UNIQUE) && \
         !(r_info[I].flags7 & RF7_UNIQUE2) && \
-        !(r_info[I].flags3 & RF3_RES_ALL) && \
+        !(r_info[I].flagsr & RFR_RES_ALL) && \
         !(r_info[I].flags7 & RF7_AQUATIC))
 
 
@@ -1171,13 +1432,13 @@ static bool vault_aux_jelly(int r_idx)
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
-       if (r_ptr->flags2 & (RF2_KILL_BODY)) return (FALSE);
+       if ((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW)) return (FALSE);
 
        /* Also decline evil jellies (like death molds and shoggoths) */
        if (r_ptr->flags3 & (RF3_EVIL)) return (FALSE);
 
        /* Require icky thing, jelly, mold, or mushroom */
-       if (!strchr("ijm,", r_ptr->d_char)) return (FALSE);
+       if (!my_strchr("ijm,", r_ptr->d_char)) return (FALSE);
 
        /* Okay */
        return (TRUE);
@@ -1228,8 +1489,8 @@ static bool vault_aux_chapel_g(int r_idx)
        static int chapel_list[] = {
                MON_NOV_PRIEST, MON_NOV_PALADIN, MON_NOV_PRIEST_G, MON_NOV_PALADIN_G, 
                MON_PRIEST, MON_JADE_MONK, MON_IVORY_MONK, MON_ULTRA_PALADIN, 
-               MON_EBONY_MONK, MON_KNI_TEMPLAR, MON_PALADIN, MON_TOPAZ_MONK,
-               0};
+               MON_EBONY_MONK, MON_W_KNIGHT, MON_KNI_TEMPLAR, MON_PALADIN,
+               MON_TOPAZ_MONK, 0};
 
        int i;
 
@@ -1263,7 +1524,7 @@ static bool vault_aux_kennel(int r_idx)
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
        /* Require a Zephyr Hound or a dog */
-       if (!strchr("CZ", r_ptr->d_char)) return (FALSE);
+       if (!my_strchr("CZ", r_ptr->d_char)) return (FALSE);
   
        /* Okay */
        return (TRUE);
@@ -1279,9 +1540,9 @@ static bool vault_aux_mimic(int r_idx)
 
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
-  
+
        /* Require mimic */
-       if (!strchr("!|$?=`", r_ptr->d_char)) return (FALSE);
+       if (!my_strchr("!$&(/=?[\\|", r_ptr->d_char)) return (FALSE);
 
        /* Okay */
        return (TRUE);
@@ -1309,7 +1570,7 @@ static bool vault_aux_symbol_e(int r_idx)
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
-       if (r_ptr->flags2 & (RF2_KILL_BODY)) return (FALSE);
+       if ((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW)) return (FALSE);
 
        if (r_ptr->flags3 & (RF3_GOOD)) return (FALSE);
 
@@ -1331,7 +1592,7 @@ static bool vault_aux_symbol_g(int r_idx)
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
-       if (r_ptr->flags2 & (RF2_KILL_BODY)) return (FALSE);
+       if ((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW)) return (FALSE);
 
        if (r_ptr->flags3 & (RF3_EVIL)) return (FALSE);
 
@@ -1442,7 +1703,7 @@ static bool vault_aux_demon(int r_idx)
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
-       if (r_ptr->flags2 & (RF2_KILL_BODY)) return (FALSE);
+       if ((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW)) return (FALSE);
 
        /* Require demon */
        if (!(r_ptr->flags3 & RF3_DEMON)) return (FALSE);
@@ -1462,7 +1723,7 @@ static bool vault_aux_cthulhu(int r_idx)
        /* Validate the monster */
        if (!vault_monster_okay(r_idx)) return (FALSE);
 
-       if (r_ptr->flags2 & (RF2_KILL_BODY)) return (FALSE);
+       if ((r_ptr->flags2 & RF2_KILL_BODY) && !(r_ptr->flags1 & RF1_NEVER_BLOW)) return (FALSE);
 
        /* Require eldritch horror */
        if (!(r_ptr->flags2 & (RF2_ELDRITCH_HORROR))) return (FALSE);
@@ -1515,7 +1776,7 @@ static void vault_prep_symbol(void)
 static void vault_prep_dragon(void)
 {
        /* Pick dragon type */
-       switch (rand_int(6))
+       switch (randint0(6))
        {
                /* Black */
                case 0:
@@ -1582,8 +1843,30 @@ static void vault_prep_dragon(void)
 }
 
 
-#define ROOM_PIT 0
-#define ROOM_NEST 1
+/*
+ * Helper function for "monster pit (dark elf)"
+ */
+static bool vault_aux_dark_elf(int r_idx)
+{
+       int i;
+       static int dark_elf_list[] =
+       {
+               MON_D_ELF, MON_D_ELF_MAGE, MON_D_ELF_WARRIOR, MON_D_ELF_PRIEST,
+               MON_D_ELF_LORD, MON_D_ELF_WARLOCK, MON_D_ELF_DRUID, MON_NIGHTBLADE,
+               MON_D_ELF_SORC, MON_D_ELF_SHADE, 0,
+       };
+
+       /* Validate the monster */
+       if (!vault_monster_okay(r_idx)) return FALSE;
+
+       /* Require dark elves */
+       for (i = 0; dark_elf_list[i]; i++)
+               if (r_idx == dark_elf_list[i]) return TRUE;
+
+       /* Assume not */
+       return FALSE;
+}
+
 
 typedef struct vault_aux_type vault_aux_type;
 
@@ -1598,7 +1881,7 @@ struct vault_aux_type
 };
 
 
-static vault_aux_type *pick_vault_type(vault_aux_type *l_ptr, int room)
+static int pick_vault_type(vault_aux_type *l_ptr, s16b allow_flag_mask)
 {
        int tmp, total, count;
 
@@ -1613,21 +1896,15 @@ static vault_aux_type *pick_vault_type(vault_aux_type *l_ptr, int room)
                /* Ignore excessive depth */
                if (n_ptr->level > dun_level) continue;
 
-               if (room == ROOM_PIT)
-               {
-                       if (!(d_info[dungeon_type].pit & (1L << count))) continue;
-               }
-               else if (room == ROOM_NEST)
-               {
-                       if(!(d_info[dungeon_type].nest & (1L << count))) continue;
-               }
+               /* Not matched with pit/nest flag */
+               if (!(allow_flag_mask & (1L << count))) continue;
 
                /* Count this possibility */
                total += n_ptr->chance * MAX_DEPTH / (MIN(dun_level, MAX_DEPTH - 1) - n_ptr->level + 5);
        }
 
        /* Pick a random type */
-       tmp = rand_int(total);
+       tmp = randint0(total);
 
        /* Find this type */
        for (n_ptr = l_ptr, total = 0, count = 0; TRUE; n_ptr++, count++)
@@ -1638,14 +1915,8 @@ static vault_aux_type *pick_vault_type(vault_aux_type *l_ptr, int room)
                /* Ignore excessive depth */
                if (n_ptr->level > dun_level) continue;
 
-               if (room == ROOM_PIT)
-               {
-                       if (!(d_info[dungeon_type].pit & (1L << count))) continue;
-               }
-               else if (room == ROOM_NEST)
-               {
-                       if(!(d_info[dungeon_type].nest & (1L << count))) continue;
-               }
+               /* Not matched with pit/nest flag */
+               if (!(allow_flag_mask & (1L << count))) continue;
 
                /* Count this possibility */
                total += n_ptr->chance * MAX_DEPTH / (MIN(dun_level, MAX_DEPTH - 1) - n_ptr->level + 5);
@@ -1654,42 +1925,220 @@ static vault_aux_type *pick_vault_type(vault_aux_type *l_ptr, int room)
                if (tmp < total) break;
        }
 
-       return (n_ptr->name ? n_ptr : NULL);
+       return n_ptr->name ? count : -1;
 }
 
-void build_type6(int by0, int bx0, bool nest);
-void build_type5(int by0, int bx0, bool nest);
-
 static vault_aux_type nest_types[] =
 {
 #ifdef JP
-       {"¥¯¥í¡¼¥ó",    vault_aux_clone,        vault_prep_clone,       5,      3},
-       {"¥¼¥ê¡¼",      vault_aux_jelly,        NULL,                   5,      6},
-       {"¥·¥ó¥Ü¥ë(Á±)",vault_aux_symbol_g,     vault_prep_symbol,      25,     2},
-       {"¥·¥ó¥Ü¥ë(°­)",vault_aux_symbol_e,     vault_prep_symbol,      25,     2},
-       {"¥ß¥ß¥Ã¥¯",    vault_aux_mimic,        NULL,                   30,     4},
-       {"¶¸µ¤",        vault_aux_cthulhu,      NULL,                   70,     2},
-       {"¸¤¾®²°",      vault_aux_kennel,       NULL,                   45,     4},
-       {"ưʪ±à",      vault_aux_animal,       NULL,                   35,     5},
-       {"¶µ²ñ",        vault_aux_chapel_g,     NULL,                   75,     4},
-       {"¥¢¥ó¥Ç¥Ã¥É",  vault_aux_undead,       NULL,                   75,     5},
-       {NULL,          NULL,                   NULL,                   0,      0},
+       {"¥¯¥í¡¼¥ó",     vault_aux_clone,    vault_prep_clone,   5, 3},
+       {"¥¼¥ê¡¼",       vault_aux_jelly,    NULL,               5, 6},
+       {"¥·¥ó¥Ü¥ë(Á±)", vault_aux_symbol_g, vault_prep_symbol, 25, 2},
+       {"¥·¥ó¥Ü¥ë(°­)", vault_aux_symbol_e, vault_prep_symbol, 25, 2},
+       {"¥ß¥ß¥Ã¥¯",     vault_aux_mimic,    NULL,              30, 4},
+       {"¶¸µ¤",         vault_aux_cthulhu,  NULL,              70, 2},
+       {"¸¤¾®²°",       vault_aux_kennel,   NULL,              45, 4},
+       {"ưʪ±à",       vault_aux_animal,   NULL,              35, 5},
+       {"¶µ²ñ",         vault_aux_chapel_g, NULL,              75, 4},
+       {"¥¢¥ó¥Ç¥Ã¥É",   vault_aux_undead,   NULL,              75, 5},
+       {NULL,           NULL,               NULL,               0, 0},
+#else
+       {"clone",        vault_aux_clone,    vault_prep_clone,   5, 3},
+       {"jelly",        vault_aux_jelly,    NULL,               5, 6},
+       {"symbol good",  vault_aux_symbol_g, vault_prep_symbol, 25, 2},
+       {"symbol evil",  vault_aux_symbol_e, vault_prep_symbol, 25, 2},
+       {"mimic",        vault_aux_mimic,    NULL,              30, 4},
+       {"lovecraftian", vault_aux_cthulhu,  NULL,              70, 2},
+       {"kennel",       vault_aux_kennel,   NULL,              45, 4},
+       {"animal",       vault_aux_animal,   NULL,              35, 5},
+       {"chapel",       vault_aux_chapel_g, NULL,              75, 4},
+       {"undead",       vault_aux_undead,   NULL,              75, 5},
+       {NULL,           NULL,               NULL,               0, 0},
+#endif
+};
+
+static vault_aux_type pit_types[] =
+{
+#ifdef JP
+       {"¥ª¡¼¥¯",       vault_aux_orc,      NULL,               5, 6},
+       {"¥È¥í¥ë",       vault_aux_troll,    NULL,              20, 6},
+       {"¥¸¥ã¥¤¥¢¥ó¥È", vault_aux_giant,    NULL,              50, 6},
+       {"¶¸µ¤",         vault_aux_cthulhu,  NULL,              80, 2},
+       {"¥·¥ó¥Ü¥ë(Á±)", vault_aux_symbol_g, vault_prep_symbol, 70, 1},
+       {"¥·¥ó¥Ü¥ë(°­)", vault_aux_symbol_e, vault_prep_symbol, 70, 1},
+       {"¶µ²ñ",         vault_aux_chapel_g, NULL,              65, 2},
+       {"¥É¥é¥´¥ó",     vault_aux_dragon,   vault_prep_dragon, 70, 6},
+       {"¥Ç¡¼¥â¥ó",     vault_aux_demon,    NULL,              80, 6},
+       {"¥À¡¼¥¯¥¨¥ë¥Õ", vault_aux_dark_elf, NULL,              45, 4},
+       {NULL,           NULL,               NULL,               0, 0},
 #else
-       {"clone",       vault_aux_clone,        vault_prep_clone,       7,      3},
-       {"jelly",       vault_aux_jelly,        NULL,                   7,      6},
-       {"symbol good",vault_aux_symbol_g,      vault_prep_symbol,      25,     2},
-       {"symbol evil",vault_aux_symbol_e,      vault_prep_symbol,      25,     2},
-       {"mimic",       vault_aux_mimic,        NULL,                   45,     6},
-       {"lovecraftian",vault_aux_cthulhu,      NULL,                   80,     2},
-       {"kennel",      vault_aux_kennel,       NULL,                   50,     2},
-       {"animal",      vault_aux_animal,       NULL,                   50,     4},
-       {"chapel",      vault_aux_chapel_g,     NULL,                   90,     2},
-       {"undead",      vault_aux_undead,       NULL,                   90,     4},
-       {NULL,          NULL,                   NULL,                   0,      0},
+       {"orc",          vault_aux_orc,      NULL,               5, 6},
+       {"troll",        vault_aux_troll,    NULL,              20, 6},
+       {"giant",        vault_aux_giant,    NULL,              50, 6},
+       {"lovecraftian", vault_aux_cthulhu,  NULL,              80, 2},
+       {"symbol good",  vault_aux_symbol_g, vault_prep_symbol, 70, 1},
+       {"symbol evil",  vault_aux_symbol_e, vault_prep_symbol, 70, 1},
+       {"chapel",       vault_aux_chapel_g, NULL,              65, 2},
+       {"dragon",       vault_aux_dragon,   vault_prep_dragon, 70, 6},
+       {"demon",        vault_aux_demon,    NULL,              80, 6},
+       {"dark elf",     vault_aux_dark_elf, NULL,              45, 4},
+       {NULL,           NULL,               NULL,               0, 0},
 #endif
 };
 
 
+/* Nest types code */
+#define NEST_TYPE_CLONE        0
+#define NEST_TYPE_JELLY        1
+#define NEST_TYPE_SYMBOL_GOOD  2
+#define NEST_TYPE_SYMBOL_EVIL  3
+#define NEST_TYPE_MIMIC        4
+#define NEST_TYPE_LOVECRAFTIAN 5
+#define NEST_TYPE_KENNEL       6
+#define NEST_TYPE_ANIMAL       7
+#define NEST_TYPE_CHAPEL       8
+#define NEST_TYPE_UNDEAD       9
+
+/* Pit types code */
+#define PIT_TYPE_ORC           0
+#define PIT_TYPE_TROLL         1
+#define PIT_TYPE_GIANT         2
+#define PIT_TYPE_LOVECRAFTIAN  3
+#define PIT_TYPE_SYMBOL_GOOD   4
+#define PIT_TYPE_SYMBOL_EVIL   5
+#define PIT_TYPE_CHAPEL        6
+#define PIT_TYPE_DRAGON        7
+#define PIT_TYPE_DEMON         8
+#define PIT_TYPE_DARK_ELF      9
+
+
+/*
+ * Hack -- Get the string describing subtype of pit/nest
+ * Determined in prepare function (some pit/nest only)
+ */
+static cptr pit_subtype_string(int type, bool nest)
+{
+       static char inner_buf[256] = "";
+
+       inner_buf[0] = '\0'; /* Init string */
+
+       if (nest) /* Nests */
+       {
+               switch (type)
+               {
+               case NEST_TYPE_CLONE:
+                       sprintf(inner_buf, "(%s)", r_name + r_info[vault_aux_race].name);
+                       break;
+               case NEST_TYPE_SYMBOL_GOOD:
+               case NEST_TYPE_SYMBOL_EVIL:
+                       sprintf(inner_buf, "(%c)", vault_aux_char);
+                       break;
+               }
+       }
+       else /* Pits */
+       {
+               switch (type)
+               {
+               case PIT_TYPE_SYMBOL_GOOD:
+               case PIT_TYPE_SYMBOL_EVIL:
+                       sprintf(inner_buf, "(%c)", vault_aux_char);
+                       break;
+               case PIT_TYPE_DRAGON:
+                       switch (vault_aux_dragon_mask4)
+                       {
+#ifdef JP
+                       case RF4_BR_ACID: strcpy(inner_buf, "(»À)");   break;
+                       case RF4_BR_ELEC: strcpy(inner_buf, "(°ðºÊ)"); break;
+                       case RF4_BR_FIRE: strcpy(inner_buf, "(²Ð±ê)"); break;
+                       case RF4_BR_COLD: strcpy(inner_buf, "(Î䵤)"); break;
+                       case RF4_BR_POIS: strcpy(inner_buf, "(ÆÇ)");   break;
+                       case (RF4_BR_ACID | RF4_BR_ELEC | RF4_BR_FIRE | RF4_BR_COLD | RF4_BR_POIS):
+                               strcpy(inner_buf, "(Ëü¿§)"); break;
+                       default: strcpy(inner_buf, "(̤ÄêµÁ)"); break;
+#else
+                       case RF4_BR_ACID: strcpy(inner_buf, "(acid)");      break;
+                       case RF4_BR_ELEC: strcpy(inner_buf, "(lightning)"); break;
+                       case RF4_BR_FIRE: strcpy(inner_buf, "(fire)");      break;
+                       case RF4_BR_COLD: strcpy(inner_buf, "(frost)");     break;
+                       case RF4_BR_POIS: strcpy(inner_buf, "(poison)");    break;
+                       case (RF4_BR_ACID | RF4_BR_ELEC | RF4_BR_FIRE | RF4_BR_COLD | RF4_BR_POIS):
+                               strcpy(inner_buf, "(multi-hued)"); break;
+                       default: strcpy(inner_buf, "(undefined)"); break;
+#endif
+                       }
+                       break;
+               }
+       }
+
+       return inner_buf;
+}
+
+
+/* A struct for nest monster information with cheat_hear */
+typedef struct
+{
+       s16b r_idx;
+       bool used;
+}
+nest_mon_info_type;
+
+
+/*
+ * Comp function for sorting nest monster information
+ */
+static bool ang_sort_comp_nest_mon_info(vptr u, vptr v, int a, int b)
+{
+       nest_mon_info_type *nest_mon_info = (nest_mon_info_type *)u;
+       int w1 = nest_mon_info[a].r_idx;
+       int w2 = nest_mon_info[b].r_idx;
+       monster_race *r1_ptr = &r_info[w1];
+       monster_race *r2_ptr = &r_info[w2];
+       int z1, z2;
+
+       /* Unused */
+       (void)v;
+
+       /* Extract used info */
+       z1 = nest_mon_info[a].used;
+       z2 = nest_mon_info[b].used;
+
+       /* Compare used status */
+       if (z1 < z2) return FALSE;
+       if (z1 > z2) return TRUE;
+
+       /* Compare levels */
+       if (r1_ptr->level < r2_ptr->level) return TRUE;
+       if (r1_ptr->level > r2_ptr->level) return FALSE;
+
+       /* Compare experience */
+       if (r1_ptr->mexp < r2_ptr->mexp) return TRUE;
+       if (r1_ptr->mexp > r2_ptr->mexp) return FALSE;
+
+       /* Compare indexes */
+       return w1 <= w2;
+}
+
+
+/*
+ * Swap function for sorting nest monster information
+ */
+static void ang_sort_swap_nest_mon_info(vptr u, vptr v, int a, int b)
+{
+       nest_mon_info_type *nest_mon_info = (nest_mon_info_type *)u;
+       nest_mon_info_type holder;
+
+       /* Unused */
+       (void)v;
+
+       /* Swap */
+       holder = nest_mon_info[a];
+       nest_mon_info[a] = nest_mon_info[b];
+       nest_mon_info[b] = holder;
+}
+
+
+#define NUM_NEST_MON_TYPE 64
+
 /*
  * Type 5 -- Monster nests
  *
@@ -1705,35 +2154,69 @@ static vault_aux_type nest_types[] =
  * "appropriate" non-unique monsters for the nest.
  *
  * Note that the "get_mon_num()" function may (rarely) fail, in which
- * case the nest will be empty, and will not affect the level rating.
+ * case the nest will be empty.
  *
  * Note that "monster nests" will never contain "unique" monsters.
  */
-void build_type5(int by0, int bx0, bool pit)
+static bool build_type5(void)
 {
        int y, x, y1, x1, y2, x2, xval, yval;
        int i;
-       int what[64];
+       nest_mon_info_type nest_mon_info[NUM_NEST_MON_TYPE];
 
-       int align = 0;
+       monster_type align;
 
        cave_type *c_ptr;
 
-       vault_aux_type *n_ptr = pick_vault_type(nest_types, ROOM_NEST);
-
-       /* Try to allocate space for room. */
-       if (!room_alloc(25, 11, TRUE, by0, bx0, &xval, &yval)) return;
+       int cur_nest_type = pick_vault_type(nest_types, d_info[dungeon_type].nest);
+       vault_aux_type *n_ptr;
 
        /* No type available */
-       if (!n_ptr)
-       {
-               if (pit) return;
-               else {build_type6(by0, bx0, TRUE);return;}
-       }
+       if (cur_nest_type < 0) return FALSE;
+
+       n_ptr = &nest_types[cur_nest_type];
 
        /* Process a preparation function if necessary */
        if (n_ptr->prep_func) (*(n_ptr->prep_func))();
 
+       /* Prepare allocation table */
+       get_mon_num_prep(n_ptr->hook_func, NULL);
+
+       align.sub_align = SUB_ALIGN_NEUTRAL;
+
+       /* Pick some monster types */
+       for (i = 0; i < NUM_NEST_MON_TYPE; i++)
+       {
+               int r_idx = 0, attempts = 100;
+               monster_race *r_ptr = NULL;
+
+               while (attempts--)
+               {
+                       /* Get a (hard) monster type */
+                       r_idx = get_mon_num(dun_level + 11);
+                       r_ptr = &r_info[r_idx];
+
+                       /* Decline incorrect alignment */
+                       if (monster_has_hostile_align(&align, 0, 0, r_ptr)) continue;
+
+                       /* Accept this monster */
+                       break;
+               }
+
+               /* Notice failure */
+               if (!r_idx || !attempts) return FALSE;
+
+               /* Note the alignment */
+               if (r_ptr->flags3 & RF3_EVIL) align.sub_align |= SUB_ALIGN_EVIL;
+               if (r_ptr->flags3 & RF3_GOOD) align.sub_align |= SUB_ALIGN_GOOD;
+
+               nest_mon_info[i].r_idx = r_idx;
+               nest_mon_info[i].used = FALSE;
+       }
+
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 11, 25)) return FALSE;
+
        /* Large room */
        y1 = yval - 4;
        y2 = yval + 4;
@@ -1798,113 +2281,64 @@ void build_type5(int by0, int bx0, bool pit)
                }
        }
 
-
        /* Place a secret door */
-       switch (randint(4))
+       switch (randint1(4))
        {
-               case 1: place_secret_door(y1 - 1, xval); break;
-               case 2: place_secret_door(y2 + 1, xval); break;
-               case 3: place_secret_door(yval, x1 - 1); break;
-               case 4: place_secret_door(yval, x2 + 1); break;
+               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
        }
 
+       /* Describe */
+       if (cheat_room)
+       {
+               /* Room type */
+#ifdef JP
+               msg_format("¥â¥ó¥¹¥¿¡¼Éô²°(nest)(%s%s)", n_ptr->name, pit_subtype_string(cur_nest_type, TRUE));
+#else
+               msg_format("Monster nest (%s%s)", n_ptr->name, pit_subtype_string(cur_nest_type, TRUE));
+#endif
+       }
 
-       /* Prepare allocation table */
-       get_mon_num_prep(n_ptr->hook_func, NULL);
-
-       /* Pick some monster types */
-       for (i = 0; i < 64; i++)
-       {
-               int r_idx = 0, attempts = 100;
+       /* Place some monsters */
+       for (y = yval - 2; y <= yval + 2; y++)
+       {
+               for (x = xval - 9; x <= xval + 9; x++)
+               {
+                       int r_idx;
 
-               while (attempts--)
-               {
-                       /* Get a (hard) monster type */
-                       r_idx = get_mon_num(dun_level + 10);
+                       i = randint0(NUM_NEST_MON_TYPE);
+                       r_idx = nest_mon_info[i].r_idx;
 
-                       /* Decline incorrect alignment */
-                       if (((align < 0) && (r_info[r_idx].flags3 & RF3_GOOD)) ||
-                                ((align > 0) && (r_info[r_idx].flags3 & RF3_EVIL)))
-                       {
-                               continue;
-                       }
+                       /* Place that "random" monster (no groups) */
+                       (void)place_monster_aux(0, y, x, r_idx, 0L);
 
-                       /* Accept this monster */
-                       break;
+                       nest_mon_info[i].used = TRUE;
                }
-
-               /* Notice failure */
-               if (!r_idx || !attempts) return;
-
-               /* Note the alignment */
-               if (r_info[r_idx].flags3 & RF3_GOOD) align++;
-               else if (r_info[r_idx].flags3 & RF3_EVIL) align--;
-
-               what[i] = r_idx;
-       }
-
-       /* Describe */
-       if (cheat_room)
-       {
-               /* Room type */
-#ifdef JP
-msg_format("¥â¥ó¥¹¥¿¡¼Éô²°(%s)", n_ptr->name);
-#else
-               msg_format("Monster nest (%s)", n_ptr->name);
-#endif
-
        }
 
-
-       /* Increase the level rating */
-       rating += 10;
-
-       /* (Sometimes) Cause a "special feeling" (for "Monster Nests") */
-       if ((dun_level <= 40) && (randint(dun_level * dun_level + 50) < 300))
+       if (cheat_room && cheat_hear)
        {
-               good_item_flag = TRUE;
-       }
+               ang_sort_comp = ang_sort_comp_nest_mon_info;
+               ang_sort_swap = ang_sort_swap_nest_mon_info;
+               ang_sort(nest_mon_info, NULL, NUM_NEST_MON_TYPE);
 
-       /* Place some monsters */
-       for (y = yval - 2; y <= yval + 2; y++)
-       {
-               for (x = xval - 9; x <= xval + 9; x++)
+               /* Dump the entries (prevent multi-printing) */
+               for (i = 0; i < NUM_NEST_MON_TYPE; i++)
                {
-                       int r_idx = what[rand_int(64)];
-
-                       /* Place that "random" monster (no groups) */
-                       (void)place_monster_aux(y, x, r_idx, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE);
+                       if (!nest_mon_info[i].used) break;
+                       for (; i < NUM_NEST_MON_TYPE - 1; i++)
+                       {
+                               if (nest_mon_info[i].r_idx != nest_mon_info[i + 1].r_idx) break;
+                               if (!nest_mon_info[i + 1].used) break;
+                       }
+                       msg_print(r_name + r_info[nest_mon_info[i].r_idx].name);
                }
        }
-}
 
-
-static vault_aux_type pit_types[] =
-{
-#ifdef JP
-       {"¥ª¡¼¥¯",      vault_aux_orc,          NULL,                   5,      6},
-       {"¥È¥í¥ë",      vault_aux_troll,        NULL,                   20,     6},
-       {"¥¸¥ã¥¤¥¢¥ó¥È",vault_aux_giant,        NULL,                   50,     6},
-       {"¶¸µ¤",        vault_aux_cthulhu,      NULL,                   80,     2},
-       {"¥·¥ó¥Ü¥ë(Á±)",vault_aux_symbol_g,     vault_prep_symbol,      70,     1},
-       {"¥·¥ó¥Ü¥ë(°­)",vault_aux_symbol_e,     vault_prep_symbol,      70,     1},
-       {"¶µ²ñ",        vault_aux_chapel_g,     NULL,                   65,     2},
-       {"¥É¥é¥´¥ó",    vault_aux_dragon,       vault_prep_dragon,      70,     6},
-       {"¥Ç¡¼¥â¥ó",    vault_aux_demon,        NULL,                   80,     6},
-       {NULL,          NULL,                   NULL,                   0,      0},
-#else
-       {"orc",         vault_aux_orc,          NULL,                   7,      4},
-       {"troll",       vault_aux_troll,        NULL,                   35,     4},
-       {"giant",       vault_aux_giant,        NULL,                   70,     4},
-       {"lovecraftian",vault_aux_cthulhu,      NULL,                   90,     4},
-       {"symbol good",vault_aux_symbol_g,      vault_prep_symbol,      25,     2},
-       {"symbol evil",vault_aux_symbol_e,      vault_prep_symbol,      25,     2},
-       {"chapel",      vault_aux_chapel_g,     NULL,                   85,     1},
-       {"dragon",      vault_aux_dragon,       vault_prep_dragon,      80,     4},
-       {"demon",       vault_aux_demon,        NULL,                   90,     4},
-       {NULL,          NULL,                   NULL,                   0,      0},
-#endif
-};
+       return TRUE;
+}
 
 
 /*
@@ -1939,36 +2373,69 @@ static vault_aux_type pit_types[] =
  * "appropriate" non-unique monsters for the pit.
  *
  * Note that the "get_mon_num()" function may (rarely) fail, in which case
- * the pit will be empty, and will not effect the level rating.
+ * the pit will be empty.
  *
  * Note that "monster pits" will never contain "unique" monsters.
  */
-void build_type6(int by0, int bx0, bool nest)
+static bool build_type6(void)
 {
        int y, x, y1, x1, y2, x2, xval, yval;
        int i, j;
 
        int what[16];
 
-       int align = 0;
+       monster_type align;
 
        cave_type *c_ptr;
 
-       vault_aux_type *n_ptr = pick_vault_type(pit_types, ROOM_PIT);
-
-       /* Try to allocate space for room. */
-       if (!room_alloc(25, 11, TRUE, by0, bx0, &xval, &yval)) return;
+       int cur_pit_type = pick_vault_type(pit_types, d_info[dungeon_type].pit);
+       vault_aux_type *n_ptr;
 
        /* No type available */
-       if (!n_ptr)
-       {
-               if (nest) return;
-               else {build_type5(by0, bx0, TRUE);return;}
-       }
+       if (cur_pit_type < 0) return FALSE;
+
+       n_ptr = &pit_types[cur_pit_type];
 
        /* Process a preparation function if necessary */
        if (n_ptr->prep_func) (*(n_ptr->prep_func))();
 
+       /* Prepare allocation table */
+       get_mon_num_prep(n_ptr->hook_func, NULL);
+
+       align.sub_align = SUB_ALIGN_NEUTRAL;
+
+       /* Pick some monster types */
+       for (i = 0; i < 16; i++)
+       {
+               int r_idx = 0, attempts = 100;
+               monster_race *r_ptr = NULL;
+
+               while (attempts--)
+               {
+                       /* Get a (hard) monster type */
+                       r_idx = get_mon_num(dun_level + 11);
+                       r_ptr = &r_info[r_idx];
+
+                       /* Decline incorrect alignment */
+                       if (monster_has_hostile_align(&align, 0, 0, r_ptr)) continue;
+
+                       /* Accept this monster */
+                       break;
+               }
+
+               /* Notice failure */
+               if (!r_idx || !attempts) return FALSE;
+
+               /* Note the alignment */
+               if (r_ptr->flags3 & RF3_EVIL) align.sub_align |= SUB_ALIGN_EVIL;
+               if (r_ptr->flags3 & RF3_GOOD) align.sub_align |= SUB_ALIGN_GOOD;
+
+               what[i] = r_idx;
+       }
+
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 11, 25)) return FALSE;
+
        /* Large room */
        y1 = yval - 4;
        y2 = yval + 4;
@@ -2032,47 +2499,12 @@ void build_type6(int by0, int bx0, bool nest)
        }
 
        /* Place a secret door */
-       switch (randint(4))
-       {
-               case 1: place_secret_door(y1 - 1, xval); break;
-               case 2: place_secret_door(y2 + 1, xval); break;
-               case 3: place_secret_door(yval, x1 - 1); break;
-               case 4: place_secret_door(yval, x2 + 1); break;
-       }
-
-
-       /* Prepare allocation table */
-       get_mon_num_prep(n_ptr->hook_func, NULL);
-
-       /* Pick some monster types */
-       for (i = 0; i < 16; i++)
+       switch (randint1(4))
        {
-               int r_idx = 0, attempts = 100;
-
-               while (attempts--)
-               {
-                       /* Get a (hard) monster type */
-                       r_idx = get_mon_num(dun_level + 10);
-
-                       /* Decline incorrect alignment */
-                       if (((align < 0) && (r_info[r_idx].flags3 & RF3_GOOD)) ||
-                                ((align > 0) && (r_info[r_idx].flags3 & RF3_EVIL)))
-                       {
-                               continue;
-                       }
-
-                       /* Accept this monster */
-                       break;
-               }
-
-               /* Notice failure */
-               if (!r_idx || !attempts) return;
-
-               /* Note the alignment */
-               if (r_info[r_idx].flags3 & RF3_GOOD) align++;
-               else if (r_info[r_idx].flags3 & RF3_EVIL) align--;
-
-               what[i] = r_idx;
+               case 1: place_secret_door(y1 - 1, xval, DOOR_DEFAULT); break;
+               case 2: place_secret_door(y2 + 1, xval, DOOR_DEFAULT); break;
+               case 3: place_secret_door(yval, x1 - 1, DOOR_DEFAULT); break;
+               case 4: place_secret_door(yval, x2 + 1, DOOR_DEFAULT); break;
        }
 
        /* Sort the entries */
@@ -2100,11 +2532,11 @@ void build_type6(int by0, int bx0, bool nest)
        /* Message */
        if (cheat_room)
        {
+               /* Room type */
 #ifdef JP
-msg_format("%s¤ÎÁã", n_ptr->name);
+               msg_format("¥â¥ó¥¹¥¿¡¼Éô²°(pit)(%s%s)", n_ptr->name, pit_subtype_string(cur_pit_type, FALSE));
 #else
-               /* Room type */
-               msg_format("Monster pit (%s)", n_ptr->name);
+               msg_format("Monster pit (%s%s)", n_ptr->name, pit_subtype_string(cur_pit_type, FALSE));
 #endif
        }
 
@@ -2121,63 +2553,56 @@ msg_format("%s
                }
        }
 
-       /* Increase the level rating */
-       rating += 10;
-
-       /* (Sometimes) Cause a "special feeling" (for "Monster Pits") */
-       if ((dun_level <= 40) && (randint(dun_level * dun_level + 50) < 300))
-       {
-               good_item_flag = TRUE;
-       }
-
        /* Top and bottom rows */
        for (x = xval - 9; x <= xval + 9; x++)
        {
-               place_monster_aux(yval - 2, x, what[0], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(yval + 2, x, what[0], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, yval - 2, x, what[0], PM_NO_KAGE);
+               place_monster_aux(0, yval + 2, x, what[0], PM_NO_KAGE);
        }
 
        /* Middle columns */
        for (y = yval - 1; y <= yval + 1; y++)
        {
-               place_monster_aux(y, xval - 9, what[0], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 9, what[0], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 9, what[0], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 9, what[0], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 8, what[1], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 8, what[1], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 8, what[1], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 8, what[1], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 7, what[1], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 7, what[1], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 7, what[1], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 7, what[1], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 6, what[2], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 6, what[2], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 6, what[2], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 6, what[2], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 5, what[2], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 5, what[2], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 5, what[2], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 5, what[2], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 4, what[3], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 4, what[3], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 4, what[3], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 4, what[3], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 3, what[3], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 3, what[3], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 3, what[3], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 3, what[3], PM_NO_KAGE);
 
-               place_monster_aux(y, xval - 2, what[4], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(y, xval + 2, what[4], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, y, xval - 2, what[4], PM_NO_KAGE);
+               place_monster_aux(0, y, xval + 2, what[4], PM_NO_KAGE);
        }
 
        /* Above/Below the center monster */
        for (x = xval - 1; x <= xval + 1; x++)
        {
-               place_monster_aux(yval + 1, x, what[5], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-               place_monster_aux(yval - 1, x, what[5], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+               place_monster_aux(0, yval + 1, x, what[5], PM_NO_KAGE);
+               place_monster_aux(0, yval - 1, x, what[5], PM_NO_KAGE);
        }
 
        /* Next to the center monster */
-       place_monster_aux(yval, xval + 1, what[6], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
-       place_monster_aux(yval, xval - 1, what[6], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+       place_monster_aux(0, yval, xval + 1, what[6], PM_NO_KAGE);
+       place_monster_aux(0, yval, xval - 1, what[6], PM_NO_KAGE);
 
        /* Center monster */
-       place_monster_aux(yval, xval, what[7], FALSE, FALSE, FALSE, FALSE, TRUE, FALSE);
+       place_monster_aux(0, yval, xval, what[7], PM_NO_KAGE);
+
+       return TRUE;
 }
 
 
@@ -2196,7 +2621,7 @@ static void coord_trans(int *x, int *y, int xoffset, int yoffset, int transno)
         * be expressed simply in terms of swapping and inverting the
         * x and y coordinates.
         */
-       for (i = 0; i <= transno % 4; i++)
+       for (i = 0; i < transno % 4; i++)
        {
                /* rotate by 90 degrees */
                temp = *x;
@@ -2242,7 +2667,7 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                        coord_trans(&i, &j, xoffset, yoffset, transno);
 
                        /* Extract the location */
-                       if (transno%2)
+                       if (transno % 2 == 0)
                        {
                                /* no swap of x/y */
                                x = xval - (xmax / 2) + i;
@@ -2264,6 +2689,9 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                        /* Lay down a floor */
                        place_floor_grid(c_ptr);
 
+                       /* Remove any mimic */
+                       c_ptr->mimic = 0;
+
                        /* Part of a vault */
                        c_ptr->info |= (CAVE_ROOM | CAVE_ICKY);
 
@@ -2280,18 +2708,28 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                place_inner_grid(c_ptr);
                                break;
 
+                               /* Glass wall (inner) */
+                       case '$':
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                               break;
+
                                /* Permanent wall (inner) */
                        case 'X':
-                               c_ptr->feat = FEAT_PERM_INNER;
-                               c_ptr->info &= ~(CAVE_MASK);
-                               c_ptr->info |= CAVE_INNER;
+                               place_inner_perm_grid(c_ptr);
+                               break;
+
+                               /* Permanent glass wall (inner) */
+                       case 'Y':
+                               place_inner_perm_grid(c_ptr);
+                               c_ptr->feat = feat_permanent_glass_wall;
                                break;
 
                                /* Treasure/trap */
                        case '*':
-                               if (rand_int(100) < 75)
+                               if (randint0(100) < 75)
                                {
-                                       place_object(y, x, FALSE, FALSE);
+                                       place_object(y, x, 0L);
                                }
                                else
                                {
@@ -2301,13 +2739,66 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
 
                                /* Secret doors */
                        case '+':
-                               place_secret_door(y, x);
+                               place_secret_door(y, x, DOOR_DEFAULT);
+                               break;
+
+                               /* Secret glass doors */
+                       case '-':
+                               place_secret_door(y, x, DOOR_GLASS_DOOR);
+                               if (is_closed_door(c_ptr->feat)) c_ptr->mimic = feat_glass_wall;
+                               break;
+
+                               /* Curtains */
+                       case '\'':
+                               place_secret_door(y, x, DOOR_CURTAIN);
                                break;
 
                                /* Trap */
                        case '^':
                                place_trap(y, x);
                                break;
+
+                               /* Black market in a dungeon */
+                       case 'S':
+                               set_cave_feat(y, x, feat_black_market);
+                               store_init(NO_TOWN, STORE_BLACK);
+                               break;
+
+                               /* The Pattern */
+                       case 'p':
+                               set_cave_feat(y, x, feat_pattern_start);
+                               break;
+
+                       case 'a':
+                               set_cave_feat(y, x, feat_pattern_1);
+                               break;
+
+                       case 'b':
+                               set_cave_feat(y, x, feat_pattern_2);
+                               break;
+
+                       case 'c':
+                               set_cave_feat(y, x, feat_pattern_3);
+                               break;
+
+                       case 'd':
+                               set_cave_feat(y, x, feat_pattern_4);
+                               break;
+
+                       case 'P':
+                               set_cave_feat(y, x, feat_pattern_end);
+                               break;
+
+                       case 'B':
+                               set_cave_feat(y, x, feat_pattern_exit);
+                               break;
+
+                       case 'A':
+                               /* Reward for Pattern walk */
+                               object_level = base_level + 12;
+                               place_object(y, x, AM_GOOD | AM_GREAT);
+                               object_level = base_level;
+                               break;
                        }
                }
        }
@@ -2326,7 +2817,7 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                        coord_trans(&i, &j, xoffset, yoffset, transno);
 
                        /* Extract the location */
-                       if (transno % 2)
+                       if (transno % 2 == 0)
                        {
                                /* no swap of x/y */
                                x = xval - (xmax / 2) + i;
@@ -2349,7 +2840,7 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                case '&':
                                {
                                        monster_level = base_level + 5;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                        break;
                                }
@@ -2358,7 +2849,7 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                case '@':
                                {
                                        monster_level = base_level + 11;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                        break;
                                }
@@ -2367,10 +2858,10 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                case '9':
                                {
                                        monster_level = base_level + 9;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, PM_ALLOW_SLEEP);
                                        monster_level = base_level;
                                        object_level = base_level + 7;
-                                       place_object(y, x, TRUE, FALSE);
+                                       place_object(y, x, AM_GOOD);
                                        object_level = base_level;
                                        break;
                                }
@@ -2379,10 +2870,10 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                case '8':
                                {
                                        monster_level = base_level + 40;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, PM_ALLOW_SLEEP);
                                        monster_level = base_level;
                                        object_level = base_level + 20;
-                                       place_object(y, x, TRUE, TRUE);
+                                       place_object(y, x, AM_GOOD | AM_GREAT);
                                        object_level = base_level;
                                        break;
                                }
@@ -2390,61 +2881,21 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
                                /* Monster and/or object */
                                case ',':
                                {
-                                       if (rand_int(100) < 50)
+                                       if (randint0(100) < 50)
                                        {
                                                monster_level = base_level + 3;
-                                               place_monster(y, x, TRUE, TRUE);
+                                               place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                                monster_level = base_level;
                                        }
-                                       if (rand_int(100) < 50)
+                                       if (randint0(100) < 50)
                                        {
                                                object_level = base_level + 7;
-                                               place_object(y, x, FALSE, FALSE);
+                                               place_object(y, x, 0L);
                                                object_level = base_level;
                                        }
                                        break;
                                }
 
-                               case 'S':
-                                       cave_set_feat(y, x, FEAT_SHOP_HEAD + STORE_BLACK);
-                                       store_init(NO_TOWN, STORE_BLACK);
-                                       break;
-
-                               case 'p':
-                                       cave_set_feat(y, x, FEAT_PATTERN_START);
-                                       break;
-
-                               case 'a':
-                                       cave_set_feat(y, x, FEAT_PATTERN_1);
-                                       break;
-
-                               case 'b':
-                                       cave_set_feat(y, x, FEAT_PATTERN_2);
-                                       break;
-
-                               case 'c':
-                                       cave_set_feat(y, x, FEAT_PATTERN_3);
-                                       break;
-
-                               case 'd':
-                                       cave_set_feat(y, x, FEAT_PATTERN_4);
-                                       break;
-
-                               case 'P':
-                                       cave_set_feat(y, x, FEAT_PATTERN_END);
-                                       break;
-
-                               case 'B':
-                                       cave_set_feat(y, x, FEAT_PATTERN_XTRA1);
-                                       break;
-
-                               case 'A':
-                               {
-                                       object_level = base_level + 12;
-                                       place_object(y, x, TRUE, FALSE);
-                                       object_level = base_level;
-                               }
-                               break;
                        }
                }
        }
@@ -2454,37 +2905,53 @@ static void build_vault(int yval, int xval, int ymax, int xmax, cptr data,
 /*
  * Type 7 -- simple vaults (see "v_info.txt")
  */
-static void build_type7(int by0, int bx0)
+static bool build_type7(void)
 {
-       vault_type *v_ptr = NULL;
-       int dummy = 0;
+       vault_type *v_ptr;
+       int dummy;
        int x, y;
        int xval, yval;
        int xoffset, yoffset;
        int transno;
 
        /* Pick a lesser vault */
-       while (dummy < SAFE_MAX_ATTEMPTS)
+       for (dummy = 0; dummy < SAFE_MAX_ATTEMPTS; dummy++)
        {
-               dummy++;
-
                /* Access a random vault record */
-               v_ptr = &v_info[rand_int(max_v_idx)];
+               v_ptr = &v_info[randint0(max_v_idx)];
 
                /* Accept the first lesser vault */
                if (v_ptr->typ == 7) break;
        }
 
        /* No lesser vault found */
-       if (!v_ptr) return;
+       if (dummy >= SAFE_MAX_ATTEMPTS)
+       {
+               if (cheat_room)
+               {
+#ifdef JP
+                       msg_print("·Ù¹ð¡ª¾®¤µ¤ÊÃϲ¼¼¼¤òÇÛÃ֤Ǥ­¤Þ¤»¤ó¡ª");
+#else
+                       msg_print("Warning! Could not place lesser vault!");
+#endif
+               }
+               return FALSE;
+       }
 
        /* pick type of transformation (0-7) */
-       transno = rand_int(8);
+       transno = randint0(8);
 
        /* calculate offsets */
        x = v_ptr->wid;
        y = v_ptr->hgt;
 
+       /* Some huge vault cannot be ratated to fit in the dungeon */
+       if (x+2 > cur_hgt-2)
+       {
+               /* Forbid 90 or 270 degree ratation */
+               transno &= ~1;
+       }
+
        coord_trans(&x, &y, 0, 0, transno);
 
        if (x < 0)
@@ -2505,81 +2972,78 @@ static void build_type7(int by0, int bx0)
                yoffset = 0;
        }
 
-       /* Try to allocate space for room. */
-       if (!room_alloc(abs(x), abs(y), FALSE, by0, bx0, &xval, &yval)) return;
-
-       if (dummy >= SAFE_MAX_ATTEMPTS)
-       {
-               if (cheat_room)
-               {
-#ifdef JP
-msg_print("·Ù¹ð¡ª¾®¤µ¤ÊÃϲ¼¼¼¤òÇÛÃ֤Ǥ­¤Þ¤»¤ó¡ª");
-#else
-                       msg_print("Warning! Could not place lesser vault!");
-#endif
-
-               }
-               return;
-       }
-
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, abs(y), abs(x))) return FALSE;
 
 #ifdef FORCE_V_IDX
        v_ptr = &v_info[2];
 #endif
 
        /* Message */
-       if (cheat_room) msg_format("%s", v_name + v_ptr->name);
-
-       /* Boost the rating */
-       rating += v_ptr->rat;
-
-       /* (Sometimes) Cause a special feeling */
-       if ((dun_level <= 50) ||
-               (randint((dun_level - 40) * (dun_level - 40) + 50) < 400))
-       {
-               good_item_flag = TRUE;
-       }
+#ifdef JP
+       if (cheat_room) msg_format("¾®¤µ¤ÊÃϲ¼¼¼(%s)", v_name + v_ptr->name);
+#else
+       if (cheat_room) msg_format("Lesser vault (%s)", v_name + v_ptr->name);
+#endif
 
        /* Hack -- Build the vault */
        build_vault(yval, xval, v_ptr->hgt, v_ptr->wid,
-                   v_text + v_ptr->text, xoffset, yoffset, transno);
+                   v_text + v_ptr->text, xoffset, yoffset, transno);
+
+       return TRUE;
 }
 
 
 /*
  * Type 8 -- greater vaults (see "v_info.txt")
  */
-static void build_type8(int by0, int bx0)
+static bool build_type8(void)
 {
-       vault_type *v_ptr = NULL;
-       int dummy = 0;
+       vault_type *v_ptr;
+       int dummy;
        int xval, yval;
        int x, y;
        int transno;
        int xoffset, yoffset;
 
        /* Pick a greater vault */
-       while (dummy < SAFE_MAX_ATTEMPTS)
+       for (dummy = 0; dummy < SAFE_MAX_ATTEMPTS; dummy++)
        {
-               dummy++;
-
                /* Access a random vault record */
-               v_ptr = &v_info[rand_int(max_v_idx)];
+               v_ptr = &v_info[randint0(max_v_idx)];
 
                /* Accept the first greater vault */
                if (v_ptr->typ == 8) break;
        }
 
        /* No greater vault found */
-       if (!v_ptr) return;
+       if (dummy >= SAFE_MAX_ATTEMPTS)
+       {
+               if (cheat_room)
+               {
+#ifdef JP
+                       msg_print("·Ù¹ð¡ªµðÂç¤ÊÃϲ¼¼¼¤òÇÛÃ֤Ǥ­¤Þ¤»¤ó¡ª");
+#else
+                       msg_print("Warning! Could not place greater vault!");
+#endif
+               }
+               return FALSE;
+       }
 
        /* pick type of transformation (0-7) */
-       transno = rand_int(8);
+       transno = randint0(8);
 
        /* calculate offsets */
        x = v_ptr->wid;
        y = v_ptr->hgt;
 
+       /* Some huge vault cannot be ratated to fit in the dungeon */
+       if (x+2 > cur_hgt-2)
+       {
+               /* Forbid 90 or 270 degree ratation */
+               transno &= ~1;
+       }
+
        coord_trans(&x, &y, 0, 0, transno);
 
        if (x < 0)
@@ -2600,44 +3064,31 @@ static void build_type8(int by0, int bx0)
                yoffset = 0;
        }
 
-       /* Try to allocate space for room.  If fails, exit */
-       if (!room_alloc(abs(x), abs(y), FALSE, by0, bx0, &xval, &yval)) return;
-
-       if (dummy >= SAFE_MAX_ATTEMPTS)
-       {
-               if (cheat_room)
-               {
-#ifdef JP
-msg_print("·Ù¹ð¡ªµðÂç¤ÊÃϲ¼¼¼¤òÇÛÃ֤Ǥ­¤Þ¤»¤ó¡ª");
-#else
-                       msg_print("Warning! Could not place greater vault!");
-#endif
-
-               }
-               return;
-       }
-
+       /*
+        * Try to allocate space for room.  If fails, exit
+        *
+        * Hack -- Prepare a bit larger space (+2, +2) to 
+        * prevent generation of vaults with no-entrance.
+        */
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, abs(y) + 2, abs(x) + 2)) return FALSE;
 
 #ifdef FORCE_V_IDX
-       v_ptr = &v_info[76 + randint(3)];
+       v_ptr = &v_info[76 + randint1(3)];
 #endif
 
        /* Message */
-       if (cheat_room) msg_format("%s", v_name + v_ptr->name);
-
-       /* Boost the rating */
-       rating += v_ptr->rat;
-
-       /* (Sometimes) Cause a special feeling */
-       if ((dun_level <= 50) ||
-           (randint((dun_level - 40) * (dun_level - 40) + 50) < 400))
-       {
-               good_item_flag = TRUE;
-       }
+#ifdef JP
+       if (cheat_room) msg_format("µðÂç¤ÊÃϲ¼¼¼(%s)", v_name + v_ptr->name);
+#else
+       if (cheat_room) msg_format("Greater vault (%s)", v_name + v_ptr->name);
+#endif
 
        /* Hack -- Build the vault */
        build_vault(yval, xval, v_ptr->hgt, v_ptr->wid,
-                   v_text + v_ptr->text, xoffset, yoffset, transno);
+                   v_text + v_ptr->text, xoffset, yoffset, transno);
+
+       return TRUE;
 }
 
 /*
@@ -2729,7 +3180,7 @@ static void store_height(int x, int y, int val)
 * The tricky part is making sure the created cave is connected.  This
 * is done by 'filling' from the inside and only keeping the 'filled'
 * floor.  Walls bounding the 'filled' floor are also kept.  Everything
-* else is converted to the normal granite FEAT_WALL_EXTRA.
+* else is converted to the normal _extra_.
  */
 
 
@@ -2783,10 +3234,10 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
        fill_data.ymin = y0 - yhsize;
        fill_data.xmax = x0 + xhsize;
        fill_data.ymax = y0 + yhsize;
-       
+
        /* Store cutoff in global for quick access */
        fill_data.c1 = cutoff;
-       
+
        /*
        * Scale factor for middle points:
        * About sqrt(2) * 256 - correct for a square lattice
@@ -2802,8 +3253,8 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
        {
                for (j = 0; j <= ysize; j++)
                {
-                       /* 255 is a flag for "not done yet" */
-                       cave[(int)(fill_data.ymin + j)][(int)(fill_data.xmin + i)].feat = 255;
+                       /* -1 is a flag for "not done yet" */
+                       cave[(int)(fill_data.ymin + j)][(int)(fill_data.xmin + i)].feat = -1;
                        /* Clear icky flag because may be redoing the cave */
                        cave[(int)(fill_data.ymin + j)][(int)(fill_data.xmin + i)].info &= ~(CAVE_ICKY);
                }
@@ -2835,11 +3286,11 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
                xhstep /= 2;
                ystep = yhstep;
                yhstep /= 2;
-               
+
                /* cache well used values */
                xstep2 = xstep / 256;
                ystep2 = ystep / 256;
-               
+
                xhstep2 = xhstep / 256;
                yhstep2 = yhstep / 256;
 
@@ -2851,22 +3302,22 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
                                /* cache often used values */
                                ii = i / 256 + fill_data.xmin;
                                jj = j / 256 + fill_data.ymin;
-                               
+
                                /* Test square */
-                               if (cave[jj][ii].feat == 255)
-                               {                               
+                               if (cave[jj][ii].feat == -1)
+                               {
                                        if (xhstep2 > grd)
                                        {
                                                /* If greater than 'grid' level then is random */
-                                               store_height(ii, jj, randint(maxsize));
+                                               store_height(ii, jj, randint1(maxsize));
                                        }
-                                       else
+                                       else
                                        {
                                                /* Average of left and right points +random bit */
                                                store_height(ii, jj,
                                                        (cave[jj][fill_data.xmin + (i - xhstep) / 256].feat
                                                         + cave[jj][fill_data.xmin + (i + xhstep) / 256].feat) / 2
-                                                        + (randint(xstep2) - xhstep2) * roug / 16);
+                                                        + (randint1(xstep2) - xhstep2) * roug / 16);
                                        }
                                }
                        }
@@ -2877,26 +3328,26 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
                for (j = yhstep; j <= yysize - yhstep; j += ystep)
                {
                        for (i = 0; i <= xxsize; i += xstep)
-                       {
+                       {
                                /* cache often used values */
                                ii = i / 256 + fill_data.xmin;
                                jj = j / 256 + fill_data.ymin;
-                               
+
                                /* Test square */
-                               if (cave[jj][ii].feat == 255)
+                               if (cave[jj][ii].feat == -1)
                                {
                                        if (xhstep2 > grd)
                                        {
                                                /* If greater than 'grid' level then is random */
-                                               store_height(ii, jj, randint(maxsize));
+                                               store_height(ii, jj, randint1(maxsize));
                                        }
-                                       else
+                                       else
                                        {
                                                /* Average of up and down points +random bit */
                                                store_height(ii, jj,
                                                        (cave[fill_data.ymin + (j - yhstep) / 256][ii].feat
                                                        + cave[fill_data.ymin + (j + yhstep) / 256][ii].feat) / 2
-                                                       + (randint(ystep2) - yhstep2) * roug / 16);
+                                                       + (randint1(ystep2) - yhstep2) * roug / 16);
                                        }
                                }
                        }
@@ -2907,34 +3358,34 @@ static void generate_hmap(int y0, int x0, int xsiz, int ysiz, int grd, int roug,
                {
                        for (j = yhstep; j <= yysize - yhstep; j += ystep)
                        {
-                               /* cache often used values */
+                               /* cache often used values */
                                ii = i / 256 + fill_data.xmin;
                                jj = j / 256 + fill_data.ymin;
-                               
+
                                /* Test square */
-                               if (cave[jj][ii].feat == 255)
-                               {                               
+                               if (cave[jj][ii].feat == -1)
+                               {
                                        if (xhstep2 > grd)
                                        {
                                                /* If greater than 'grid' level then is random */
-                                               store_height(ii, jj, randint(maxsize));
+                                               store_height(ii, jj, randint1(maxsize));
                                        }
-                                       else
+                                       else
                                        {
                                                /* Cache reused values. */
                                                xm = fill_data.xmin + (i - xhstep) / 256;
                                                xp = fill_data.xmin + (i + xhstep) / 256;
                                                ym = fill_data.ymin + (j - yhstep) / 256;
-                                               yp = fill_data.ymin + (j + yhstep) / 256;                                       
-                                       
+                                               yp = fill_data.ymin + (j + yhstep) / 256;
+
                                                /* 
                                                 * Average over all four corners + scale by diagsize to
                                                 * reduce the effect of the square grid on the shape of the fractal
-                                                */                             
+                                                */
                                                store_height(ii, jj,
                                                        (cave[ym][xm].feat + cave[yp][xm].feat
                                                        + cave[ym][xp].feat + cave[yp][xp].feat) / 4
-                                                       + (randint(xstep2) - xhstep2) * (diagsize / 16) / 256 * roug);
+                                                       + (randint1(xstep2) - xhstep2) * (diagsize / 16) / 256 * roug);
                                        }
                                }
                        }
@@ -2963,7 +3414,7 @@ static bool hack_isnt_wall(int y, int x, int c1, int c2, int c3, int feat1, int
                if (cave[y][x].feat <= c1)
                {
                        /* 25% of the time use the other tile : it looks better this way */
-                       if (randint(100) < 75)
+                       if (randint1(100) < 75)
                        {
                                cave[y][x].feat = feat1;
                                cave[y][x].info &= ~(CAVE_MASK);
@@ -2981,7 +3432,7 @@ static bool hack_isnt_wall(int y, int x, int c1, int c2, int c3, int feat1, int
                else if (cave[y][x].feat <= c2)
                {
                        /* 25% of the time use the other tile : it looks better this way */
-                       if (randint(100) < 75)
+                       if (randint1(100) < 75)
                        {
                                cave[y][x].feat = feat2;
                                cave[y][x].info &= ~(CAVE_MASK);
@@ -2999,6 +3450,7 @@ static bool hack_isnt_wall(int y, int x, int c1, int c2, int c3, int feat1, int
                else if (cave[y][x].feat <= c3)
                {
                        cave[y][x].feat = feat3;
+                       cave[y][x].info &= ~(CAVE_MASK);
                        cave[y][x].info |= info3;
                        return TRUE;
                }
@@ -3070,7 +3522,7 @@ static void cave_fill(byte y, byte x)
                                        fill_data.c1, fill_data.c2, fill_data.c3,
                                        fill_data.feat1, fill_data.feat2, fill_data.feat3,
                                        fill_data.info1, fill_data.info2, fill_data.info3))
-                               {
+                               {
                                        /* Enqueue that entry */
                                        temp_y[flow_tail] = j;
                                        temp_x[flow_tail] = i;
@@ -3103,7 +3555,6 @@ static void cave_fill(byte y, byte x)
 static bool generate_fracave(int y0, int x0, int xsize, int ysize, int cutoff, bool light, bool room)
 {
        int x, y, i, xhsize, yhsize;
-       
 
        /* offsets to middle from corner */
        xhsize = xsize / 2;
@@ -3122,9 +3573,9 @@ static bool generate_fracave(int y0, int x0, int xsize, int ysize, int cutoff, b
        fill_data.c3 = 0;
 
        /* features to fill with */
-       fill_data.feat1 = floor_type[rand_int(100)];
-       fill_data.feat2 = floor_type[rand_int(100)];
-       fill_data.feat3 = floor_type[rand_int(100)];
+       fill_data.feat1 = floor_type[randint0(100)];
+       fill_data.feat2 = floor_type[randint0(100)];
+       fill_data.feat3 = floor_type[randint0(100)];
 
        fill_data.info1 = CAVE_FLOOR;
        fill_data.info2 = CAVE_FLOOR;
@@ -3246,7 +3697,7 @@ static bool generate_fracave(int y0, int x0, int xsize, int ysize, int cutoff, b
                                if (room) cave[y0 + y - yhsize][x0 + x - xhsize].info |= (CAVE_ROOM);
                        }
                        else if (is_outer_bold(y0 + y - yhsize, x0 + x - xhsize) &&
-                                (cave[y0 + y - yhsize][x0 + x - xhsize].info & CAVE_ICKY))
+                                (cave[y0 + y - yhsize][x0 + x - xhsize].info & CAVE_ICKY))
                        {
                                /* Walls */
                                cave[y0 + y - yhsize][x0 + x - xhsize].info &= ~(CAVE_ICKY);
@@ -3275,7 +3726,7 @@ static bool generate_fracave(int y0, int x0, int xsize, int ysize, int cutoff, b
         * XXX XXX XXX There is a slight problem when tunnels pierce the caves:
         * Extra doors appear inside the system.  (Its not very noticeable though.)
         * This can be removed by "filling" from the outside in.  This allows a separation
-        * from FEAT_WALL_OUTER with FEAT_WALL_INNER.  (Internal walls are  F.W.OUTER instead.)
+        * from _outer_ with _inner_.  (Internal walls are  _outer_ instead.)
         * The extra effort for what seems to be only a minor thing (even non-existant if you
         * think of the caves not as normal rooms, but as holes in the dungeon), doesn't seem
         * worth it.
@@ -3288,23 +3739,38 @@ static bool generate_fracave(int y0, int x0, int xsize, int ysize, int cutoff, b
 /*
  * Driver routine to create fractal cave system
  */
-static void build_type9(int by0, int bx0)
+static bool build_type9(void)
 {
        int grd, roug, cutoff, xsize, ysize, y0, x0;
 
        bool done, light, room;
 
        /* get size: note 'Evenness'*/
-       xsize = randint(22) * 2 + 6;
-       ysize = randint(15) * 2 + 6;
+       xsize = randint1(22) * 2 + 6;
+       ysize = randint1(15) * 2 + 6;
 
-       /* Try to allocate space for room.  If fails, exit */
-       if (!room_alloc(xsize + 1, ysize + 1, FALSE, by0, bx0, &x0, &y0)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&y0, &x0, ysize + 1, xsize + 1))
+       {
+               /* Limit to the minimum room size, and retry */
+               xsize = 8;
+               ysize = 8;
 
-       light = done = FALSE;
-       room = TRUE;
+               /* Find and reserve some space in the dungeon.  Get center of room. */
+               if (!find_space(&y0, &x0, ysize + 1, xsize + 1))
+               {
+                       /*
+                        * Still no space?!
+                        * Try normal room
+                        */
+                       return build_type1();
+               }
+       }
+
+       light = done = FALSE;
+       room = TRUE;
 
-       if ((dun_level <= randint(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
+       if ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
 
        while (!done)
        {
@@ -3312,14 +3778,14 @@ static void build_type9(int by0, int bx0)
                * This causes the tunnels not to connect properly to the room */
 
                /* testing values for these parameters feel free to adjust */
-               grd = 1 << (rand_int(4));
+               grd = 1 << (randint0(4));
 
                /* want average of about 16 */
-               roug = randint(8) * randint(4);
+               roug = randint1(8) * randint1(4);
 
                /* about size/2 */
-               cutoff = randint(xsize / 4) + randint(ysize / 4) +
-                        randint(xsize / 4) + randint(ysize / 4);
+               cutoff = randint1(xsize / 4) + randint1(ysize / 4) +
+                        randint1(xsize / 4) + randint1(ysize / 4);
 
                /* make it */
                generate_hmap(y0, x0, xsize, ysize, grd, roug, cutoff);
@@ -3327,6 +3793,8 @@ static void build_type9(int by0, int bx0)
                /* Convert to normal format + clean up */
                done = generate_fracave(y0, x0, xsize, ysize, cutoff, light, room);
        }
+
+       return TRUE;
 }
 
 #ifdef ALLOW_CAVERNS_AND_LAKES
@@ -3339,7 +3807,7 @@ void build_cavern(void)
        bool done, light;
 
        light = done = FALSE;
-       if ((dun_level <= randint(50)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
+       if ((dun_level <= randint1(50)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
 
        /* Make a cave the size of the dungeon */
        xsize = cur_wid - 1;
@@ -3354,10 +3822,10 @@ void build_cavern(void)
        while (!done)
        {
                /* testing values for these parameters: feel free to adjust */
-               grd = randint(4) + 4;
+               grd = randint1(4) + 4;
 
                /* want average of about 16 */
-               roug = randint(8) * randint(4);
+               roug = randint1(8) * randint1(4);
 
                /* about size/2 */
                cutoff = xsize / 2;
@@ -3382,51 +3850,44 @@ static bool generate_lake(int y0, int x0, int xsize, int ysize, int c1, int c2,
        /* Get features based on type */
        switch (type)
        {
-               case 1: {
-                               /* Lava */
-                               feat1 = FEAT_DEEP_LAVA;
-                               feat2 = FEAT_SHAL_LAVA;
-                               feat3 = floor_type[rand_int(100)];
-                               }; break;
-               case 2:{
-                               /* Water */
-                               feat1 = FEAT_DEEP_WATER;
-                               feat2 = FEAT_SHAL_WATER;
-                               feat3 = floor_type[rand_int(100)];
-                               }; break;
-               case 3: {
-                               /* Collapsed cave */
-                               feat1 = floor_type[rand_int(100)];
-                               feat2 = floor_type[rand_int(100)];
-                               feat3 = FEAT_RUBBLE;
-                               }; break;
-               case 4: {
-                               /* Earth vault */
-                               feat1 = FEAT_RUBBLE;
-                               feat2 = floor_type[rand_int(100)];
-                               feat3 = FEAT_RUBBLE;
-                               }; break;
-               case 5: {
-                               /* Air vault */
-                               feat1 = FEAT_GRASS;
-                               feat2 = FEAT_TREES;
-                               feat3 = FEAT_GRASS;
-                               }; break;
-               case 6: {
-                               /* Water vault */
-                               feat1 = FEAT_SHAL_WATER;
-                               feat2 = FEAT_DEEP_WATER;
-                               feat3 = FEAT_SHAL_WATER;
-                               }; break;
-               case 7: {
-                               /* Fire Vault */
-                               feat1 = FEAT_SHAL_LAVA;
-                               feat2 = FEAT_DEEP_LAVA;
-                               feat3 = FEAT_SHAL_LAVA;
-                               }; break;
-
-               /* Paranoia */
-               default: return FALSE;
+       case LAKE_T_LAVA: /* Lava */
+               feat1 = feat_deep_lava;
+               feat2 = feat_shallow_lava;
+               feat3 = floor_type[randint0(100)];
+               break;
+       case LAKE_T_WATER: /* Water */
+               feat1 = feat_deep_water;
+               feat2 = feat_shallow_water;
+               feat3 = floor_type[randint0(100)];
+               break;
+       case LAKE_T_CAVE: /* Collapsed cave */
+               feat1 = floor_type[randint0(100)];
+               feat2 = floor_type[randint0(100)];
+               feat3 = feat_rubble;
+               break;
+       case LAKE_T_EARTH_VAULT: /* Earth vault */
+               feat1 = feat_rubble;
+               feat2 = floor_type[randint0(100)];
+               feat3 = feat_rubble;
+               break;
+       case LAKE_T_AIR_VAULT: /* Air vault */
+               feat1 = feat_grass;
+               feat2 = feat_tree;
+               feat3 = feat_grass;
+               break;
+       case LAKE_T_WATER_VAULT: /* Water vault */
+               feat1 = feat_shallow_water;
+               feat2 = feat_deep_water;
+               feat3 = feat_shallow_water;
+               break;
+       case LAKE_T_FIRE_VAULT: /* Fire Vault */
+               feat1 = feat_shallow_lava;
+               feat2 = feat_deep_lava;
+               feat3 = feat_shallow_lava;
+               break;
+
+       /* Paranoia */
+       default: return FALSE;
        }
 
        /*
@@ -3434,7 +3895,7 @@ static bool generate_lake(int y0, int x0, int xsize, int ysize, int c1, int c2,
         * this gets rid of alot of isolated one-sqaures that
         * can make teleport traps instadeaths...
         */
-       
+
        /* cutoffs */
        fill_data.c1 = c1;
        fill_data.c2 = c2;
@@ -3509,11 +3970,10 @@ static bool generate_lake(int y0, int x0, int xsize, int ysize, int c1, int c2,
                        /* turn off icky flag (no longer needed.) */
                        cave[y0 + y - yhsize][x0 + x - xhsize].info &= ~(CAVE_ICKY | CAVE_ROOM);
 
-                       /* Light lava and trees */
-                       if ((cave[y0 + y - yhsize][x0 + x - xhsize].feat == FEAT_DEEP_LAVA) ||
-                               (cave[y0 + y - yhsize][x0 + x - xhsize].feat == FEAT_SHAL_LAVA))
+                       /* Light lava */
+                       if (cave_have_flag_bold(y0 + y - yhsize, x0 + x - xhsize, FF_LAVA))
                        {
-                               cave[y0 + y - yhsize][x0 + x - xhsize].info |= CAVE_GLOW;
+                               if (!(d_info[dungeon_type].flags1 & DF1_DARKNESS)) cave[y0 + y - yhsize][x0 + x - xhsize].info |= CAVE_GLOW;
                        }
                }
        }
@@ -3532,7 +3992,7 @@ void build_lake(int type)
        int c1, c2, c3;
 
        /* paranoia - exit if lake type out of range. */
-       if ((type < 1) || (type > 7))
+       if ((type < LAKE_T_LAVA) || (type > LAKE_T_FIRE_VAULT))
        {
                msg_format("Invalid lake type (%d)", type);
                return;
@@ -3551,17 +4011,17 @@ void build_lake(int type)
        while (!done)
        {
                /* testing values for these parameters: feel free to adjust */
-               grd = randint(3) + 4;
+               grd = randint1(3) + 4;
 
                /* want average of about 16 */
-               roug = randint(8) * randint(4);
+               roug = randint1(8) * randint1(4);
 
                /* Make up size of various componants */
                /* Floor */
                c3 = 3 * xsize / 4;
 
                /* Deep water/lava */
-               c1 = rand_int(c3 / 2) + rand_int(c3 / 2) - 5;
+               c1 = randint0(c3 / 2) + randint0(c3 / 2) - 5;
 
                /* Shallow boundary */
                c2 = (c1 + c3) / 2;
@@ -3600,7 +4060,7 @@ static void add_door(int x, int y)
            (is_outer_bold(y, x - 1) && is_outer_bold(y, x + 1)))
        {
                /* secret door */
-               place_secret_door(y, x);
+               place_secret_door(y, x, DOOR_DEFAULT);
 
                /* set boundarys so don't get wide doors */
                place_solid_bold(y, x - 1);
@@ -3620,7 +4080,7 @@ static void add_door(int x, int y)
            is_floor_bold(y,x-1) && is_floor_bold(y,x+1))
        {
                /* secret door */
-               place_secret_door(y, x);
+               place_secret_door(y, x, DOOR_DEFAULT);
 
                /* set boundarys so don't get wide doors */
                place_solid_bold(y - 1, x);
@@ -3650,42 +4110,41 @@ static void fill_treasure(int x1, int x2, int y1, int y2, int difficulty)
                {
                        /* Thing added based on distance to center of vault
                         * Difficulty is 1-easy to 10-hard */
-                       value = ((((s32b)(distance(cx, cy, x, y))) * 100) / size) + randint(10) - difficulty;
+                       value = ((((s32b)(distance(cx, cy, x, y))) * 100) / size) + randint1(10) - difficulty;
 
                        /* hack- empty square part of the time */
-                       if ((randint(100) - difficulty * 3) > 50) value = 20;
+                       if ((randint1(100) - difficulty * 3) > 50) value = 20;
 
                         /* if floor, shallow water and lava */
                        if (is_floor_bold(y, x) ||
-                           (cave[y][x].feat == FEAT_SHAL_WATER) ||
-                           (cave[y][x].feat == FEAT_SHAL_LAVA))
+                           (cave_have_flag_bold(y, x, FF_PLACE) && cave_have_flag_bold(y, x, FF_DROP)))
                        {
                                /* The smaller 'value' is, the better the stuff */
                                if (value < 0)
                                {
                                        /* Meanest monster + treasure */
                                        monster_level = base_level + 40;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                        object_level = base_level + 20;
-                                       place_object(y, x, TRUE, FALSE);
+                                       place_object(y, x, AM_GOOD);
                                        object_level = base_level;
                                }
                                else if (value < 5)
                                {
                                        /* Mean monster +treasure */
                                        monster_level = base_level + 20;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                        object_level = base_level + 10;
-                                       place_object(y, x, TRUE, FALSE);
+                                       place_object(y, x, AM_GOOD);
                                        object_level = base_level;
                                }
                                else if (value < 10)
                                {
                                        /* Monster */
                                        monster_level = base_level + 9;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                }
                                else if (value < 17)
@@ -3702,9 +4161,9 @@ static void fill_treasure(int x1, int x2, int y1, int y2, int difficulty)
                                else if (value < 23)
                                {
                                        /* Object or trap */
-                                       if (rand_int(100) < 25)
+                                       if (randint0(100) < 25)
                                        {
-                                               place_object(y, x, FALSE, FALSE);
+                                               place_object(y, x, 0L);
                                        }
                                        else
                                        {
@@ -3715,23 +4174,23 @@ static void fill_treasure(int x1, int x2, int y1, int y2, int difficulty)
                                {
                                        /* Monster and trap */
                                        monster_level = base_level + 5;
-                                       place_monster(y, x, TRUE, TRUE);
+                                       place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        monster_level = base_level;
                                        place_trap(y, x);
                                }
                                else if (value < 40)
                                {
                                        /* Monster or object */
-                                       if (rand_int(100) < 50)
+                                       if (randint0(100) < 50)
                                        {
                                                monster_level = base_level + 3;
-                                               place_monster(y, x, TRUE, TRUE);
+                                               place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                                monster_level = base_level;
                                        }
-                                       if (rand_int(100) < 50)
+                                       if (randint0(100) < 50)
                                        {
                                                object_level = base_level + 7;
-                                               place_object(y, x, FALSE, FALSE);
+                                               place_object(y, x, 0L);
                                                object_level = base_level;
                                        }
                                }
@@ -3745,17 +4204,17 @@ static void fill_treasure(int x1, int x2, int y1, int y2, int difficulty)
                                        /* Various Stuff */
 
                                        /* 20% monster, 40% trap, 20% object, 20% blank space */
-                                       if (rand_int(100) < 20)
+                                       if (randint0(100) < 20)
                                        {
-                                               place_monster(y, x, TRUE, TRUE);
+                                               place_monster(y, x, (PM_ALLOW_SLEEP | PM_ALLOW_GROUP));
                                        }
-                                       else if (rand_int(100) < 50)
+                                       else if (randint0(100) < 50)
                                        {
                                                place_trap(y, x);
                                        }
-                                       else if (rand_int(100) < 50)
+                                       else if (randint0(100) < 50)
                                        {
-                                               place_object(y, x, FALSE, FALSE);
+                                               place_object(y, x, 0L);
                                        }
                                }
 
@@ -3795,8 +4254,8 @@ static void build_bubble_vault(int x0, int y0, int xsize, int ysize)
        if (cheat_room) msg_print("Bubble Vault");
 
        /* Allocate center of bubbles */
-       center[0].x = randint(xsize - 3) + 1;
-       center[0].y = randint(ysize - 3) + 1;
+       center[0].x = (byte)randint1(xsize - 3) + 1;
+       center[0].y = (byte)randint1(ysize - 3) + 1;
 
        for (i = 1; i < BUBBLENUM; i++)
        {
@@ -3807,8 +4266,8 @@ static void build_bubble_vault(int x0, int y0, int xsize, int ysize)
                {
                        done = TRUE;
 
-                       x = randint(xsize - 3) + 1;
-                       y = randint(ysize - 3) + 1;
+                       x = randint1(xsize - 3) + 1;
+                       y = randint1(ysize - 3) + 1;
 
                        for (j = 0; j < i; j++)
                        {
@@ -3877,7 +4336,7 @@ static void build_bubble_vault(int x0, int y0, int xsize, int ysize)
                                else if (temp < min2)
                                {
                                        /* second smallest */
-                                       min2 = temp;
+                                       min2 = temp;
                                }
                        }
                        if (((min2 - min1) <= 2) && (!(min1 < 3)))
@@ -3899,13 +4358,13 @@ static void build_bubble_vault(int x0, int y0, int xsize, int ysize)
        /* Try to add some random doors */
        for (i = 0; i < 500; i++)
        {
-               x = randint(xsize - 3) - xhsize + x0 + 1;
-               y = randint(ysize - 3) - yhsize + y0 + 1;
+               x = randint1(xsize - 3) - xhsize + x0 + 1;
+               y = randint1(ysize - 3) - yhsize + y0 + 1;
                add_door(x, y);
        }
 
        /* Fill with monsters and treasure, low difficulty */
-       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 2, y0 - yhsize + 1, y0 - yhsize + ysize - 2, randint(5));
+       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 2, y0 - yhsize + 1, y0 - yhsize + ysize - 2, randint1(5));
 }
 
 
@@ -4012,23 +4471,23 @@ static void build_room_vault(int x0, int y0, int xsize, int ysize)
        /* add ten random rooms */
        for (i = 0; i < 10; i++)
        {
-               x1 = randint(xhsize) * 2 + x0 - xhsize;
-               x2 = randint(xhsize) * 2 + x0 - xhsize;
-               y1 = randint(yhsize) * 2 + y0 - yhsize;
-               y2 = randint(yhsize) * 2 + y0 - yhsize;
+               x1 = randint1(xhsize) * 2 + x0 - xhsize;
+               x2 = randint1(xhsize) * 2 + x0 - xhsize;
+               y1 = randint1(yhsize) * 2 + y0 - yhsize;
+               y2 = randint1(yhsize) * 2 + y0 - yhsize;
                build_room(x1, x2, y1, y2);
        }
 
        /* Add some random doors */
        for (i = 0; i < 500; i++)
        {
-               x1 = randint(xsize - 3) - xhsize + x0 + 1;
-               y1 = randint(ysize - 3) - yhsize + y0 + 1;
+               x1 = randint1(xsize - 3) - xhsize + x0 + 1;
+               y1 = randint1(ysize - 3) - yhsize + y0 + 1;
                add_door(x1, y1);
        }
 
        /* Fill with monsters and treasure, high difficulty */
-       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 2, y0 - yhsize + 1, y0 - yhsize + ysize - 2, randint(5) + 5);
+       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 2, y0 - yhsize + 1, y0 - yhsize + ysize - 2, randint1(5) + 5);
 }
 
 
@@ -4052,14 +4511,14 @@ static void build_cave_vault(int x0, int y0, int xsiz, int ysiz)
        while (!done)
        {
                /* testing values for these parameters feel free to adjust */
-               grd = 1 << rand_int(4);
+               grd = 1 << randint0(4);
 
                /* want average of about 16 */
-               roug = randint(8) * randint(4);
+               roug = randint1(8) * randint1(4);
 
                /* about size/2 */
-               cutoff = randint(xsize / 4) + randint(ysize / 4) +
-                        randint(xsize / 4) + randint(ysize / 4);
+               cutoff = randint1(xsize / 4) + randint1(ysize / 4) +
+                        randint1(xsize / 4) + randint1(ysize / 4);
 
                /* make it */
                generate_hmap(y0, x0, xsize, ysize, grd, roug, cutoff);
@@ -4078,7 +4537,7 @@ static void build_cave_vault(int x0, int y0, int xsiz, int ysiz)
        }
 
        /* Fill with monsters and treasure, low difficulty */
-       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 1, y0 - yhsize + 1, y0 - yhsize + ysize - 1, randint(5));
+       fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 1, y0 - yhsize + 1, y0 - yhsize + ysize - 1, randint1(5));
 }
 
 /*
@@ -4096,11 +4555,11 @@ static void build_cave_vault(int x0, int y0, int xsiz, int ysiz)
  *
  * The spanning tree is created by performing a suitably randomized
  * depth-first traversal of the graph. The only adjustable parameter
- * is the rand_int(3) below; it governs the relative density of
+ * is the randint0(3) below; it governs the relative density of
  * twists and turns in the labyrinth: smaller number, more twists.
  */
 static void r_visit(int y1, int x1, int y2, int x2,
-                    int node, int dir, int *visited)
+                   int node, int dir, int *visited)
 {
        int i, j, m, n, temp, x, y, adj[4];
 
@@ -4122,7 +4581,7 @@ static void r_visit(int y1, int x1, int y2, int x2,
                        adj[i] = i;
                for (i = 0; i < 4; i++)
                {
-                       j = rand_int(4);
+                       j = randint0(4);
                        temp = adj[i];
                        adj[i] = adj[j];
                        adj[j] = temp;
@@ -4137,7 +4596,7 @@ static void r_visit(int y1, int x1, int y2, int x2,
                        adj[i] = i;
                for (i = 1; i < 4; i++)
                {
-                       j = 1 + rand_int(3);
+                       j = 1 + randint0(3);
                        temp = adj[i];
                        adj[i] = adj[j];
                        adj[j] = temp;
@@ -4188,7 +4647,7 @@ void build_maze_vault(int x0, int y0, int xsize, int ysize, bool is_vault)
 {
        int y, x, dy, dx;
        int y1, x1, y2, x2;
-       int i, m, n, num_vertices, *visited;
+       int m, n, num_vertices, *visited;
        bool light;
        cave_type *c_ptr;
 
@@ -4196,7 +4655,7 @@ void build_maze_vault(int x0, int y0, int xsize, int ysize, bool is_vault)
        if (cheat_room && is_vault) msg_print("Maze Vault");
 
        /* Choose lite or dark */
-       light = ((dun_level <= randint(25)) && is_vault && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+       light = ((dun_level <= randint1(25)) && is_vault && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
 
        /* Pick a random room size - randomized by calling routine */
        dy = ysize / 2 - 1;
@@ -4237,18 +4696,15 @@ void build_maze_vault(int x0, int y0, int xsize, int ysize, bool is_vault)
        num_vertices = m * n;
 
        /* initialize array of visited vertices */
-       /* use ralloc here ? */
-       visited = (int *)malloc(num_vertices * sizeof(int));
-       for (i = 0; i < num_vertices; i++)
-               visited[i] = 0;
+       C_MAKE(visited, num_vertices, int);
 
        /* traverse the graph to create a spaning tree, pick a random root */
-       r_visit(y1, x1, y2, x2, rand_int(num_vertices), 0, visited);
+       r_visit(y1, x1, y2, x2, randint0(num_vertices), 0, visited);
 
        /* Fill with monsters and treasure, low difficulty */
-       if (is_vault) fill_treasure(x1, x2, y1, y2, randint(5));
+       if (is_vault) fill_treasure(x1, x2, y1, y2, randint1(5));
 
-       free(visited);
+       C_KILL(visited, num_vertices, int);
 }
 
 
@@ -4260,22 +4716,22 @@ void build_maze_vault(int x0, int y0, int xsize, int ysize, bool is_vault)
  * a way to get in even if the vault abuts a side of the dungeon.
  */
 static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
- {
-       int dy, dx;
-       int y1, x1, y2, x2, y, x, total;
-       int i, m, n, num_vertices;
+{
+       int dy, dx;
+       int y1, x1, y2, x2, y, x, total;
+       int m, n, num_vertices;
        int *visited;
 
-       if (cheat_room) msg_print("Mini Checker Board Vault");
+       if (cheat_room) msg_print("Mini Checker Board Vault");
 
-       /* Pick a random room size */
+       /* Pick a random room size */
        dy = ysize / 2 - 1;
        dx = xsize / 2 - 1;
 
        y1 = y0 - dy;
-       x1 = x0 - dx;
-       y2 = y0 + dy;
-       x2 = x0 + dx;
+       x1 = x0 - dx;
+       y2 = y0 + dy;
+       x2 = x0 + dx;
 
 
        /* generate the room */
@@ -4285,7 +4741,7 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
 
                cave[y1-2][x].info |= (CAVE_ROOM | CAVE_ICKY);
 
-               place_extra_noperm_bold(y1-2, x);
+               place_outer_noperm_bold(y1-2, x);
        }
 
        for (x = x1 - 2; x <= x2 + 2; x++)
@@ -4294,7 +4750,7 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
 
                cave[y2+2][x].info |= (CAVE_ROOM | CAVE_ICKY);
 
-               place_extra_noperm_bold(y2+2, x);
+               place_outer_noperm_bold(y2+2, x);
        }
 
        for (y = y1 - 2; y <= y2 + 2; y++)
@@ -4303,7 +4759,7 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
 
                cave[y][x1-2].info |= (CAVE_ROOM | CAVE_ICKY);
 
-               place_extra_noperm_bold(y, x1-2);
+               place_outer_noperm_bold(y, x1-2);
        }
 
        for (y = y1 - 2; y <= y2 + 2; y++)
@@ -4312,17 +4768,19 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
 
                cave[y][x2+2].info |= (CAVE_ROOM | CAVE_ICKY);
 
-               place_extra_noperm_bold(y, x2+2);
+               place_outer_noperm_bold(y, x2+2);
        }
 
        for (y = y1 - 1; y <= y2 + 1; y++)
        {
                for (x = x1 - 1; x <= x2 + 1; x++)
                {
-                       cave[y][x].info |= (CAVE_ROOM | CAVE_ICKY);
+                       cave_type *c_ptr = &cave[y][x];
+
+                       c_ptr->info |= (CAVE_ROOM | CAVE_ICKY);
 
                        /* Permanent walls */
-                       cave[y][x].feat = FEAT_PERM_INNER;
+                       place_inner_perm_grid(c_ptr);
                }
        }
 
@@ -4333,13 +4791,10 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
        num_vertices = m * n;
 
        /* initialize array of visited vertices */
-       /* use ralloc here ? */
-       visited = (int *) malloc(num_vertices * sizeof(int));
-       for (i = 0; i < num_vertices; i++)
-               visited[i] = 0;
+       C_MAKE(visited, num_vertices, int);
 
        /* traverse the graph to create a spannng tree, pick a random root */
-       r_visit(y1, x1, y2, x2, rand_int(num_vertices), 0, visited);
+       r_visit(y1, x1, y2, x2, randint0(num_vertices), 0, visited);
 
        /* Make it look like a checker board vault */
        for (x = x1; x <= x2; x++)
@@ -4359,23 +4814,22 @@ static void build_mini_c_vault(int x0, int y0, int xsize, int ysize)
        if (one_in_(2))
        {
                /* left and right */
-               y = randint(dy) + dy / 2;
-               place_outer_noperm_bold(y1 + y, x1 - 1);
-               place_outer_noperm_bold(y1 + y, x2 + 1);
+               y = randint1(dy) + dy / 2;
+               place_inner_bold(y1 + y, x1 - 1);
+               place_inner_bold(y1 + y, x2 + 1);
        }
        else
        {
                /* top and bottom */
-               x = randint(dx) + dx / 2;
-               place_outer_noperm_bold(y1 - 1, x1 + x);
-               place_outer_noperm_bold(y2 + 1, x1 + x);
+               x = randint1(dx) + dx / 2;
+               place_inner_bold(y1 - 1, x1 + x);
+               place_inner_bold(y2 + 1, x1 + x);
        }
 
        /* Fill with monsters and treasure, highest difficulty */
        fill_treasure(x1, x2, y1, y2, 10);
 
-       /* rnfree(visited, num_vertices * sizeof(int)); */
-       free(visited);
+       C_KILL(visited, num_vertices, int);
 }
 
 
@@ -4408,19 +4862,19 @@ static void build_recursive_room(int x1, int y1, int x2, int y2, int power)
                if (power < 10)
                {
                        /* Make rooms + subdivide */
-                       if ((randint(10) > 2) && (xsize < 8) && (ysize < 8))
+                       if ((randint1(10) > 2) && (xsize < 8) && (ysize < 8))
                        {
                                choice = 4;
                        }
                        else
                        {
-                               choice = randint(2) + 1;
+                               choice = randint1(2) + 1;
                        }
                }
                else
                {
                        /* Mostly subdivide */
-                       choice = randint(3) + 1;
+                       choice = randint1(3) + 1;
                }
        }
 
@@ -4450,23 +4904,23 @@ static void build_recursive_room(int x1, int y1, int x2, int y2, int power)
                        if (one_in_(2))
                        {
                                /* left and right */
-                               y = randint(ysize) + y1;
+                               y = randint1(ysize) + y1;
                                place_floor_bold(y, x1);
                                place_floor_bold(y, x2);
                        }
                        else
                        {
                                /* top and bottom */
-                               x = randint(xsize) + x1;
+                               x = randint1(xsize) + x1;
                                place_floor_bold(y1, x);
                                place_floor_bold(y2, x);
                        }
 
                        /* Select size of keep */
-                       t1 = randint(ysize / 3) + y1;
-                       t2 = y2 - randint(ysize / 3);
-                       t3 = randint(xsize / 3) + x1;
-                       t4 = x2 - randint(xsize / 3);
+                       t1 = randint1(ysize / 3) + y1;
+                       t2 = y2 - randint1(ysize / 3);
+                       t3 = randint1(xsize / 3) + x1;
+                       t4 = x2 - randint1(xsize / 3);
 
                        /* Do outside areas */
 
@@ -4522,7 +4976,7 @@ static void build_recursive_room(int x1, int y1, int x2, int y2, int power)
                        }
 
                        /* Make a door */
-                       y = randint(ysize - 3) + y1 + 1;
+                       y = randint1(ysize - 3) + y1 + 1;
 
                        if (one_in_(2))
                        {
@@ -4555,7 +5009,7 @@ static void build_recursive_room(int x1, int y1, int x2, int y2, int power)
                                return;
                        }
 
-                       t1 = randint(xsize - 2) + x1 + 1;
+                       t1 = randint1(xsize - 2) + x1 + 1;
                        build_recursive_room(x1, y1, t1, y2, power - 2);
                        build_recursive_room(t1 + 1, y1, x2, y2, power - 2);
                        break;
@@ -4576,7 +5030,7 @@ static void build_recursive_room(int x1, int y1, int x2, int y2, int power)
                                return;
                        }
 
-                       t1 = randint(ysize - 2) + y1 + 1;
+                       t1 = randint1(ysize - 2) + y1 + 1;
                        build_recursive_room(x1, y1, x2, t1, power - 2);
                        build_recursive_room(x1, t1 + 1, x2, y2, power - 2);
                        break;
@@ -4603,9 +5057,9 @@ static void build_castle_vault(int x0, int y0, int xsize, int ysize)
        dx = xsize / 2 - 1;
 
        y1 = y0 - dy;
-       x1 = x0 - dx;
-       y2 = y0 + dy;
-       x2 = x0 + dx;
+       x1 = x0 - dx;
+       y2 = y0 + dy;
+       x2 = x0 + dx;
 
        if (cheat_room) msg_print("Castle Vault");
 
@@ -4621,10 +5075,10 @@ static void build_castle_vault(int x0, int y0, int xsize, int ysize)
        }
 
        /* Make the castle */
-       build_recursive_room(x1, y1, x2, y2, randint(5));
+       build_recursive_room(x1, y1, x2, y2, randint1(5));
 
        /* Fill with monsters and treasure, low difficulty */
-       fill_treasure(x1, x2, y1, y2, randint(3));
+       fill_treasure(x1, x2, y1, y2, randint1(3));
 }
 
 
@@ -4633,19 +5087,24 @@ static void build_castle_vault(int x0, int y0, int xsize, int ysize)
  * Note: no range checking is done so must be inside dungeon
  * This routine also stomps on doors
  */
-static void add_outer_wall(int x, int y, int light,
-                                                                       int x1, int y1, int x2, int y2)
+static void add_outer_wall(int x, int y, int light, int x1, int y1, int x2, int y2)
 {
+       cave_type *c_ptr;
+       feature_type *f_ptr;
        int i, j;
 
        if (!in_bounds(y, x)) return;
 
+       c_ptr = &cave[y][x];
+
        /* hack- check to see if square has been visited before
        * if so, then exit (use room flag to do this) */
-       if (cave[y][x].info & CAVE_ROOM) return;
+       if (c_ptr->info & CAVE_ROOM) return;
 
        /* set room flag */
-       cave[y][x].info |= CAVE_ROOM;
+       c_ptr->info |= CAVE_ROOM;
+
+       f_ptr = &f_info[c_ptr->feat];
 
        if (is_floor_bold(y, x))
        {
@@ -4657,7 +5116,7 @@ static void add_outer_wall(int x, int y, int light,
                                         (y + j >= y1) && (y + j <= y2))
                                {
                                        add_outer_wall(x + i, y + j, light, x1, y1, x2, y2);
-                                       if (light) cave[y][x].info |= CAVE_GLOW;
+                                       if (light) c_ptr->info |= CAVE_GLOW;
                                }
                        }
                }
@@ -4666,12 +5125,12 @@ static void add_outer_wall(int x, int y, int light,
        {
                /* Set bounding walls */
                place_outer_bold(y, x);
-               if (light == TRUE) cave[y][x].info |= CAVE_GLOW;
+               if (light) c_ptr->info |= CAVE_GLOW;
        }
-       else if (cave[y][x].feat == FEAT_PERM_OUTER)
+       else if (permanent_wall(f_ptr))
        {
                /* Set bounding walls */
-               if (light == TRUE) cave[y][x].info |= CAVE_GLOW;
+               if (light) c_ptr->info |= CAVE_GLOW;
        }
 }
 
@@ -4681,7 +5140,7 @@ static void add_outer_wall(int x, int y, int light,
  * Used to build crypts
  */
 static int dist2(int x1, int y1, int x2, int y2,
-                 int h1, int h2, int h3, int h4)
+                int h1, int h2, int h3, int h4)
 {
        int dx, dy;
        dx = abs(x2 - x1);
@@ -4698,7 +5157,7 @@ static int dist2(int x1, int y1, int x2, int y2,
        if (dx >= 2 * dy) return (dx + (dy * h1) / h2);
        if (dy >= 2 * dx) return (dy + (dx * h1) / h2);
        return (((dx + dy) * 128) / 181 +
-               (dx * dx / (dy * h3) + dy * dy / (dx * h3)) * h4);
+               (dx * dx / (dy * h3) + dy * dy / (dx * h3)) * h4);
        /* 128/181 is approx. 1/sqrt(2) */
 }
 
@@ -4714,10 +5173,10 @@ static void build_target_vault(int x0, int y0, int xsize, int ysize)
 
        /* Make a random metric */
        int h1, h2, h3, h4;
-       h1 = randint(32) - 16;
-       h2 = randint(16);
-       h3 = randint(32);
-       h4 = randint(32) - 16;
+       h1 = randint1(32) - 16;
+       h2 = randint1(16);
+       h3 = randint1(32);
+       h4 = randint1(32) - 16;
 
        if (cheat_room) msg_print("Target Vault");
 
@@ -4764,7 +5223,7 @@ static void build_target_vault(int x0, int y0, int xsize, int ysize)
 
        /* Find visible outer walls and set to be FEAT_OUTER */
        add_outer_wall(x0, y0, FALSE, x0 - rad - 1, y0 - rad - 1,
-                      x0 + rad + 1, y0 + rad + 1);
+                      x0 + rad + 1, y0 + rad + 1);
 
        /* Add inner wall */
        for (x = x0 - rad / 2; x <= x0 + rad / 2; x++)
@@ -4820,7 +5279,7 @@ static void build_target_vault(int x0, int y0, int xsize, int ysize)
        add_door(x0, y0 - y);
 
        /* Fill with stuff - medium difficulty */
-       fill_treasure(x0 - rad, x0 + rad, y0 - rad, y0 + rad, randint(3) + 3);
+       fill_treasure(x0 - rad, x0 + rad, y0 - rad, y0 + rad, randint1(3) + 3);
 }
 
 
@@ -4852,38 +5311,38 @@ static void build_elemental_vault(int x0, int y0, int xsiz, int ysiz)
        if (dun_level < 25)
        {
                /* Earth vault  (Rubble) */
-               type = 4;
+               type = LAKE_T_EARTH_VAULT;
        }
        else if (dun_level < 50)
        {
                /* Air vault (Trees) */
-               type = 5;
+               type = LAKE_T_AIR_VAULT;
        }
        else if (dun_level < 75)
        {
                /* Water vault (shallow water) */
-               type = 6;
+               type = LAKE_T_WATER_VAULT;
        }
        else
        {
                /* Fire vault (shallow lava) */
-               type = 7;
+               type = LAKE_T_FIRE_VAULT;
        }
 
        while (!done)
        {
                /* testing values for these parameters: feel free to adjust */
-               grd = 1 << (rand_int(3));
+               grd = 1 << (randint0(3));
 
                /* want average of about 16 */
-               roug = randint(8) * randint(4);
+               roug = randint1(8) * randint1(4);
 
                /* Make up size of various componants */
                /* Floor */
                c3 = 2 * xsize / 3;
 
                /* Deep water/lava */
-               c1 = rand_int(c3 / 2) + rand_int(c3 / 2) - 5;
+               c1 = randint0(c3 / 2) + randint0(c3 / 2) - 5;
 
                /* Shallow boundary */
                c2 = (c1 + c3) / 2;
@@ -4907,13 +5366,13 @@ static void build_elemental_vault(int x0, int y0, int xsiz, int ysiz)
        /* make a few rooms in the vault */
        for (i = 1; i <= (xsize * ysize) / 50; i++)
        {
-               build_small_room(x0 + rand_int(xsize - 4) - xsize / 2 + 2,
-                                y0 + rand_int(ysize - 4) - ysize / 2 + 2);
+               build_small_room(x0 + randint0(xsize - 4) - xsize / 2 + 2,
+                                y0 + randint0(ysize - 4) - ysize / 2 + 2);
        }
 
        /* Fill with monsters and treasure, low difficulty */
        fill_treasure(x0 - xhsize + 1, x0 - xhsize + xsize - 1,
-                     y0 - yhsize + 1, y0 - yhsize + ysize - 1, randint(5));
+                     y0 - yhsize + 1, y0 - yhsize + ysize - 1, randint1(5));
 }
 #endif /* ALLOW_CAVERNS_AND_LAKES */
 
@@ -4921,33 +5380,33 @@ static void build_elemental_vault(int x0, int y0, int xsiz, int ysiz)
 /*
  * Random vaults
  */
-static void build_type10(int by0, int bx0)
+static bool build_type10(void)
 {
        int y0, x0, xsize, ysize, vtype;
 
        /* Get size */
        /* big enough to look good, small enough to be fairly common. */
-       xsize = randint(22) + 22;
-       ysize = randint(11) + 11;
+       xsize = randint1(22) + 22;
+       ysize = randint1(11) + 11;
 
-       /* Allocate in room_map.  If will not fit, exit */
-       if (!room_alloc(xsize + 1, ysize + 1, FALSE, by0, bx0, &x0, &y0)) return;
-
-       /* Boost the rating- higher than lesser vaults and lower than greater vaults */
-       rating += 10;
-
-       /* (Sometimes) Cause a special feeling */
-       if ((dun_level <= 50) ||
-           (randint((dun_level - 40) * (dun_level - 40) + 1) < 400))
-       {
-               good_item_flag = TRUE;
-       }
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&y0, &x0, ysize + 1, xsize + 1)) return FALSE;
 
        /* Select type of vault */
 #ifdef ALLOW_CAVERNS_AND_LAKES
-       vtype = randint(15);
+       do
+       {
+               vtype = randint1(15);
+       }
+       while ((d_info[dungeon_type].flags1 & DF1_NO_CAVE) &&
+               ((vtype == 1) || (vtype == 3) || (vtype == 8) || (vtype == 9) || (vtype == 11)));
 #else /* ALLOW_CAVERNS_AND_LAKES */
-       vtype = randint(7);
+       do
+       {
+               vtype = randint1(7);
+       }
+       while ((d_info[dungeon_type].flags1 & DF1_NO_CAVE) &&
+               ((vtype == 1) || (vtype == 3)));
 #endif /* ALLOW_CAVERNS_AND_LAKES */
 
        switch (vtype)
@@ -4966,8 +5425,10 @@ static void build_type10(int by0, int bx0)
                /* I know how to add a few more... give me some time. */
 
                /* Paranoia */
-               default: return;
+               default: return FALSE;
        }
+
+       return TRUE;
 }
 
 
@@ -4978,18 +5439,18 @@ static void build_type10(int by0, int bx0)
  *
  * When done fill from the inside to find the walls,
  */
-static void build_type11(int by0, int bx0)
+static bool build_type11(void)
 {
        int rad, x, y, x0, y0;
        int light = FALSE;
 
        /* Occasional light */
-       if ((randint(dun_level) <= 15) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
+       if ((randint1(dun_level) <= 15) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
 
-       rad = rand_int(9);
+       rad = randint0(9);
 
-       /* Allocate in room_map.  If will not fit, exit */
-       if (!room_alloc(rad * 2 + 1, rad * 2 + 1, FALSE, by0, bx0, &x0, &y0)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&y0, &x0, rad * 2 + 1, rad * 2 + 1)) return FALSE;
 
        /* Make circular floor */
        for (x = x0 - rad; x <= x0 + rad; x++)
@@ -5011,6 +5472,8 @@ static void build_type11(int by0, int bx0)
 
        /* Find visible outer walls and set to be FEAT_OUTER */
        add_outer_wall(x0, y0, light, x0 - rad, y0 - rad, x0 + rad, y0 + rad);
+
+       return TRUE;
 }
 
 
@@ -5021,26 +5484,26 @@ static void build_type11(int by0, int bx0)
  *
  * When done fill from the inside to find the walls,
  */
-static void build_type12(int by0, int bx0)
-       {
+static bool build_type12(void)
+{
        int rad, x, y, x0, y0;
        int light = FALSE;
        bool emptyflag = TRUE;
 
        /* Make a random metric */
        int h1, h2, h3, h4;
-       h1 = randint(32) - 16;
-       h2 = randint(16);
-       h3 = randint(32);
-       h4 = randint(32) - 16;
+       h1 = randint1(32) - 16;
+       h2 = randint1(16);
+       h3 = randint1(32);
+       h4 = randint1(32) - 16;
 
        /* Occasional light */
-       if ((randint(dun_level) <= 5) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
+       if ((randint1(dun_level) <= 5) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS)) light = TRUE;
 
-       rad = randint(9);
+       rad = randint1(9);
 
-       /* Allocate in room_map.  If will not fit, exit */
-       if (!room_alloc(rad * 2 + 3, rad * 2 + 3, FALSE, by0, bx0, &x0, &y0)) return;
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&y0, &x0, rad * 2 + 3, rad * 2 + 3)) return FALSE;
 
        /* Make floor */
        for (x = x0 - rad; x <= x0 + rad; x++)
@@ -5076,7 +5539,7 @@ static void build_type12(int by0, int bx0)
 
        /* Find visible outer walls and set to be FEAT_OUTER */
        add_outer_wall(x0, y0, light, x0 - rad - 1, y0 - rad - 1,
-                      x0 + rad + 1, y0 + rad + 1);
+                      x0 + rad + 1, y0 + rad + 1);
 
        /* Check to see if there is room for an inner vault */
        for (x = x0 - 2; x <= x0 + 2; x++)
@@ -5097,51 +5560,1260 @@ static void build_type12(int by0, int bx0)
                build_small_room(x0, y0);
 
                /* Place a treasure in the vault */
-               place_object(y0, x0, FALSE, FALSE);
+               place_object(y0, x0, 0L);
 
                /* Let's guard the treasure well */
-               vault_monsters(y0, x0, rand_int(2) + 3);
+               vault_monsters(y0, x0, randint0(2) + 3);
 
                /* Traps naturally */
-               vault_traps(y0, x0, 4, 4, rand_int(3) + 2);
+               vault_traps(y0, x0, 4, 4, randint0(3) + 2);
        }
+
+       return TRUE;
 }
 
 
 /*
- * Attempt to build a room of the given type at the given block
+ * Helper function for "trapped monster pit"
+ */
+static bool vault_aux_trapped_pit(int r_idx)
+{
+       monster_race *r_ptr = &r_info[r_idx];
+
+       /* Validate the monster */
+       if (!vault_monster_okay(r_idx)) return (FALSE);
+
+       /* No wall passing monster */
+       if (r_ptr->flags2 & (RF2_PASS_WALL | RF2_KILL_WALL)) return (FALSE);
+
+       /* Okay */
+       return (TRUE);
+}
+
+
+/*
+ * Type 13 -- Trapped monster pits
  *
- * Note that we restrict the number of "crowded" rooms to reduce
- * the chance of overflowing the monster list during level creation.
+ * A trapped monster pit is a "big" room with a straight corridor in
+ * which wall opening traps are placed, and with two "inner" rooms
+ * containing a "collection" of monsters of a given type organized in
+ * the room.
+ *
+ * The trapped monster pit appears as shown below, where the actual
+ * monsters in each location depend on the type of the pit
+ *
+ *  #########################
+ *  #                       #
+ *  ####################### #
+ *  #####001123454321100### #
+ *  ###0012234567654322100# #
+ *  ####################### #
+ *  #           ^           #
+ *  # #######################
+ *  # #0012234567654322100###
+ *  # ###001123454321100#####
+ *  # #######################
+ *  #                       #
+ *  #########################
+ *
+ * Note that the monsters in the pit are now chosen by using "get_mon_num()"
+ * to request 16 "appropriate" monsters, sorting them by level, and using
+ * the "even" entries in this sorted list for the contents of the pit.
+ *
+ * Hack -- all of the "dragons" in a "dragon" pit must be the same "color",
+ * which is handled by requiring a specific "breath" attack for all of the
+ * dragons.  This may include "multi-hued" breath.  Note that "wyrms" may
+ * be present in many of the dragon pits, if they have the proper breath.
+ *
+ * Note the use of the "get_mon_num_prep()" function, and the special
+ * "get_mon_num_hook()" restriction function, to prepare the "monster
+ * allocation table" in such a way as to optimize the selection of
+ * "appropriate" non-unique monsters for the pit.
+ *
+ * Note that the "get_mon_num()" function may (rarely) fail, in which case
+ * the pit will be empty.
+ *
+ * Note that "monster pits" will never contain "unique" monsters.
  */
-bool room_build(int by0, int bx0, int typ)
+static bool build_type13(void)
 {
-       /* Restrict level */
-       if ((dun_level < roomdep[typ]) && !ironman_rooms) return (FALSE);
+       static int placing[][3] = {
+               {-2, -9, 0}, {-2, -8, 0}, {-3, -7, 0}, {-3, -6, 0},
+               {+2, -9, 0}, {+2, -8, 0}, {+3, -7, 0}, {+3, -6, 0},
+               {-2, +9, 0}, {-2, +8, 0}, {-3, +7, 0}, {-3, +6, 0},
+               {+2, +9, 0}, {+2, +8, 0}, {+3, +7, 0}, {+3, +6, 0},
+               {-2, -7, 1}, {-3, -5, 1}, {-3, -4, 1}, 
+               {+2, -7, 1}, {+3, -5, 1}, {+3, -4, 1}, 
+               {-2, +7, 1}, {-3, +5, 1}, {-3, +4, 1}, 
+               {+2, +7, 1}, {+3, +5, 1}, {+3, +4, 1},
+               {-2, -6, 2}, {-2, -5, 2}, {-3, -3, 2},
+               {+2, -6, 2}, {+2, -5, 2}, {+3, -3, 2},
+               {-2, +6, 2}, {-2, +5, 2}, {-3, +3, 2},
+               {+2, +6, 2}, {+2, +5, 2}, {+3, +3, 2},
+               {-2, -4, 3}, {-3, -2, 3},
+               {+2, -4, 3}, {+3, -2, 3},
+               {-2, +4, 3}, {-3, +2, 3},
+               {+2, +4, 3}, {+3, +2, 3},
+               {-2, -3, 4}, {-3, -1, 4},
+               {+2, -3, 4}, {+3, -1, 4},
+               {-2, +3, 4}, {-3, +1, 4},
+               {+2, +3, 4}, {+3, +1, 4},
+               {-2, -2, 5}, {-3, 0, 5}, {-2, +2, 5},
+               {+2, -2, 5}, {+3, 0, 5}, {+2, +2, 5},
+               {-2, -1, 6}, {-2, +1, 6},
+               {+2, -1, 6}, {+2, +1, 6},
+               {-2, 0, 7}, {+2, 0, 7},
+               {0, 0, -1}
+       };
+
+       int y, x, y1, x1, y2, x2, xval, yval;
+       int i, j;
 
-       /* Restrict "crowded" rooms */
-       if ((dun->crowded >= 2) && ((typ == 5) || (typ == 6))) return (FALSE);
+       int what[16];
 
-       /* Build a room */
-       switch (typ)
+       monster_type align;
+
+       cave_type *c_ptr;
+
+       int cur_pit_type = pick_vault_type(pit_types, d_info[dungeon_type].pit);
+       vault_aux_type *n_ptr;
+
+       /* Only in Angband */
+       if (dungeon_type != DUNGEON_ANGBAND) return FALSE;
+
+       /* No type available */
+       if (cur_pit_type < 0) return FALSE;
+
+       n_ptr = &pit_types[cur_pit_type];
+
+       /* Process a preparation function if necessary */
+       if (n_ptr->prep_func) (*(n_ptr->prep_func))();
+
+       /* Prepare allocation table */
+       get_mon_num_prep(n_ptr->hook_func, vault_aux_trapped_pit);
+
+       align.sub_align = SUB_ALIGN_NEUTRAL;
+
+       /* Pick some monster types */
+       for (i = 0; i < 16; i++)
        {
-               /* Build an appropriate room */
-               case 12: build_type12(by0, bx0); break;
-               case 11: build_type11(by0, bx0); break;
-               case 10: build_type10(by0, bx0); break;
-               case 9: build_type9(by0, bx0); break;
-               case 8: build_type8(by0, bx0); break;
-               case 7: build_type7(by0, bx0); break;
-               case 6: build_type6(by0, bx0, FALSE); break;
-               case 5: build_type5(by0, bx0, FALSE); break;
-               case 4: build_type4(by0, bx0); break;
-               case 3: build_type3(by0, bx0); break;
-               case 2: build_type2(by0, bx0); break;
-               case 1: build_type1(by0, bx0); break;
+               int r_idx = 0, attempts = 100;
+               monster_race *r_ptr = NULL;
 
-               /* Paranoia */
-               default: return (FALSE);
+               while (attempts--)
+               {
+                       /* Get a (hard) monster type */
+                       r_idx = get_mon_num(dun_level + 0);
+                       r_ptr = &r_info[r_idx];
+
+                       /* Decline incorrect alignment */
+                       if (monster_has_hostile_align(&align, 0, 0, r_ptr)) continue;
+
+                       /* Accept this monster */
+                       break;
+               }
+
+               /* Notice failure */
+               if (!r_idx || !attempts) return FALSE;
+
+               /* Note the alignment */
+               if (r_ptr->flags3 & RF3_EVIL) align.sub_align |= SUB_ALIGN_EVIL;
+               if (r_ptr->flags3 & RF3_GOOD) align.sub_align |= SUB_ALIGN_GOOD;
+
+               what[i] = r_idx;
        }
 
-       return (TRUE);
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, 13, 25)) return FALSE;
+
+       /* Large room */
+       y1 = yval - 5;
+       y2 = yval + 5;
+       x1 = xval - 11;
+       x2 = xval + 11;
+
+       /* Fill with inner walls */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               for (x = x1 - 1; x <= x2 + 1; x++)
+               {
+                       c_ptr = &cave[y][x];
+                       place_inner_grid(c_ptr);
+                       c_ptr->info |= (CAVE_ROOM);
+               }
+       }
+
+       /* Place the floor area 1 */
+       for (x = x1 + 3; x <= x2 - 3; x++)
+       {
+               c_ptr = &cave[yval-2][x];
+               place_floor_grid(c_ptr);
+               add_cave_info(yval-2, x, CAVE_ICKY);
+
+               c_ptr = &cave[yval+2][x];
+               place_floor_grid(c_ptr);
+               add_cave_info(yval+2, x, CAVE_ICKY);
+       }
+
+       /* Place the floor area 2 */
+       for (x = x1 + 5; x <= x2 - 5; x++)
+       {
+               c_ptr = &cave[yval-3][x];
+               place_floor_grid(c_ptr);
+               add_cave_info(yval-3, x, CAVE_ICKY);
+
+               c_ptr = &cave[yval+3][x];
+               place_floor_grid(c_ptr);
+               add_cave_info(yval+3, x, CAVE_ICKY);
+       }
+
+       /* Corridor */
+       for (x = x1; x <= x2; x++)
+       {
+               c_ptr = &cave[yval][x];
+               place_floor_grid(c_ptr);
+               c_ptr = &cave[y1][x];
+               place_floor_grid(c_ptr);
+               c_ptr = &cave[y2][x];
+               place_floor_grid(c_ptr);
+       }
+
+       /* Place the outer walls */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               c_ptr = &cave[y][x1 - 1];
+               place_outer_grid(c_ptr);
+               c_ptr = &cave[y][x2 + 1];
+               place_outer_grid(c_ptr);
+       }
+       for (x = x1 - 1; x <= x2 + 1; x++)
+       {
+               c_ptr = &cave[y1 - 1][x];
+               place_outer_grid(c_ptr);
+               c_ptr = &cave[y2 + 1][x];
+               place_outer_grid(c_ptr);
+       }
+
+       /* Random corridor */
+       if (one_in_(2))
+       {
+               for (y = y1; y <= yval; y++)
+               {
+                       place_floor_bold(y, x2);
+                       place_solid_bold(y, x1-1);
+               }
+               for (y = yval; y <= y2 + 1; y++)
+               {
+                       place_floor_bold(y, x1);
+                       place_solid_bold(y, x2+1);
+               }
+       }
+       else
+       {
+               for (y = yval; y <= y2 + 1; y++)
+               {
+                       place_floor_bold(y, x1);
+                       place_solid_bold(y, x2+1);
+               }
+               for (y = y1; y <= yval; y++)
+               {
+                       place_floor_bold(y, x2);
+                       place_solid_bold(y, x1-1);
+               }
+       }
+
+       /* Place the wall open trap */
+       cave[yval][xval].mimic = cave[yval][xval].feat;
+       cave[yval][xval].feat = feat_trap_open;
+
+       /* Sort the entries */
+       for (i = 0; i < 16 - 1; i++)
+       {
+               /* Sort the entries */
+               for (j = 0; j < 16 - 1; j++)
+               {
+                       int i1 = j;
+                       int i2 = j + 1;
+
+                       int p1 = r_info[what[i1]].level;
+                       int p2 = r_info[what[i2]].level;
+
+                       /* Bubble */
+                       if (p1 > p2)
+                       {
+                               int tmp = what[i1];
+                               what[i1] = what[i2];
+                               what[i2] = tmp;
+                       }
+               }
+       }
+
+       /* Message */
+       if (cheat_room)
+       {
+               /* Room type */
+#ifdef JP
+               msg_format("%s%s¤Î櫥ԥåÈ", n_ptr->name, pit_subtype_string(cur_pit_type, FALSE));
+#else
+               msg_format("Trapped monster pit (%s%s)", n_ptr->name, pit_subtype_string(cur_pit_type, FALSE));
+#endif
+       }
+
+       /* Select the entries */
+       for (i = 0; i < 8; i++)
+       {
+               /* Every other entry */
+               what[i] = what[i * 2];
+
+               if (cheat_hear)
+               {
+                       /* Message */
+                       msg_print(r_name + r_info[what[i]].name);
+               }
+       }
+
+       for (i = 0; placing[i][2] >= 0; i++)
+       {
+               y = yval + placing[i][0];
+               x = xval + placing[i][1];
+               place_monster_aux(0, y, x, what[placing[i][2]], PM_NO_KAGE);
+       }
+
+       return TRUE;
+}
+
+
+/*
+ * Type 14 -- trapped rooms
+ *
+ * A special trap is placed at center of the room
+ */
+static bool build_type14(void)
+{
+       int y, x, y2, x2, yval, xval;
+       int y1, x1, xsize, ysize;
+
+       bool light;
+
+       cave_type *c_ptr;
+       s16b trap;
+
+       /* Pick a room size */
+       y1 = randint1(4);
+       x1 = randint1(11);
+       y2 = randint1(3);
+       x2 = randint1(11);
+
+       xsize = x1 + x2 + 1;
+       ysize = y1 + y2 + 1;
+
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, ysize + 2, xsize + 2)) return FALSE;
+
+       /* Choose lite or dark */
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+
+
+       /* Get corner values */
+       y1 = yval - ysize / 2;
+       x1 = xval - xsize / 2;
+       y2 = yval + (ysize - 1) / 2;
+       x2 = xval + (xsize - 1) / 2;
+
+
+       /* Place a full floor under the room */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               for (x = x1 - 1; x <= x2 + 1; x++)
+               {
+                       c_ptr = &cave[y][x];
+                       place_floor_grid(c_ptr);
+                       c_ptr->info |= (CAVE_ROOM);
+                       if (light) c_ptr->info |= (CAVE_GLOW);
+               }
+       }
+
+       /* Walls around the room */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               c_ptr = &cave[y][x1 - 1];
+               place_outer_grid(c_ptr);
+               c_ptr = &cave[y][x2 + 1];
+               place_outer_grid(c_ptr);
+       }
+       for (x = x1 - 1; x <= x2 + 1; x++)
+       {
+               c_ptr = &cave[y1 - 1][x];
+               place_outer_grid(c_ptr);
+               c_ptr = &cave[y2 + 1][x];
+               place_outer_grid(c_ptr);
+       }
+
+       if (dun_level < 30 + randint1(30))
+               trap = feat_trap_piranha;
+       else
+               trap = feat_trap_armageddon;
+
+       /* Place a special trap */
+       c_ptr = &cave[rand_spread(yval, ysize/4)][rand_spread(xval, xsize/4)];
+       c_ptr->mimic = c_ptr->feat;
+       c_ptr->feat = trap;
+
+       /* Message */
+       if (cheat_room)
+       {
+#ifdef JP
+               msg_format("%s¤ÎÉô²°", f_name + f_info[trap].name);
+#else
+               msg_format("Room of %s", f_name + f_info[trap].name);
+#endif
+       }
+
+       return TRUE;
+}
+
+
+/*
+ * Helper function for "glass room"
+ */
+static bool vault_aux_lite(int r_idx)
+{
+       monster_race *r_ptr = &r_info[r_idx];
+
+       /* Validate the monster */
+       if (!vault_monster_okay(r_idx)) return FALSE;
+
+       /* Require lite attack */
+       if (!(r_ptr->flags4 & RF4_BR_LITE) && !(r_ptr->flags5 & RF5_BA_LITE)) return FALSE;
+
+       /* No wall passing monsters */
+       if (r_ptr->flags2 & (RF2_PASS_WALL | RF2_KILL_WALL)) return FALSE;
+
+       /* No disintegrating monsters */
+       if (r_ptr->flags4 & RF4_BR_DISI) return FALSE;
+
+       return TRUE;
+}
+
+/*
+ * Helper function for "glass room"
+ */
+static bool vault_aux_shards(int r_idx)
+{
+       monster_race *r_ptr = &r_info[r_idx];
+
+       /* Validate the monster */
+       if (!vault_monster_okay(r_idx)) return FALSE;
+
+       /* Require shards breath attack */
+       if (!(r_ptr->flags4 & RF4_BR_SHAR)) return FALSE;
+
+       return TRUE;
+}
+
+/*
+ * Hack -- determine if a template is potion
+ */
+static bool kind_is_potion(int k_idx)
+{
+       return k_info[k_idx].tval == TV_POTION;
+}
+
+/*
+ * Type 15 -- glass rooms
+ */
+static bool build_type15(void)
+{
+       int y, x, y2, x2, yval, xval;
+       int y1, x1, xsize, ysize;
+       bool light;
+
+       cave_type *c_ptr;
+
+       /* Pick a room size */
+       xsize = rand_range(9, 13);
+       ysize = rand_range(9, 13);
+
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, ysize + 2, xsize + 2)) return FALSE;
+
+       /* Choose lite or dark */
+       light = ((dun_level <= randint1(25)) && !(d_info[dungeon_type].flags1 & DF1_DARKNESS));
+
+       /* Get corner values */
+       y1 = yval - ysize / 2;
+       x1 = xval - xsize / 2;
+       y2 = yval + (ysize - 1) / 2;
+       x2 = xval + (xsize - 1) / 2;
+
+       /* Place a full floor under the room */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               for (x = x1 - 1; x <= x2 + 1; x++)
+               {
+                       c_ptr = &cave[y][x];
+                       place_floor_grid(c_ptr);
+                       c_ptr->feat = feat_glass_floor;
+                       c_ptr->info |= (CAVE_ROOM);
+                       if (light) c_ptr->info |= (CAVE_GLOW);
+               }
+       }
+
+       /* Walls around the room */
+       for (y = y1 - 1; y <= y2 + 1; y++)
+       {
+               c_ptr = &cave[y][x1 - 1];
+               place_outer_grid(c_ptr);
+               c_ptr->feat = feat_glass_wall;
+               c_ptr = &cave[y][x2 + 1];
+               place_outer_grid(c_ptr);
+               c_ptr->feat = feat_glass_wall;
+       }
+       for (x = x1 - 1; x <= x2 + 1; x++)
+       {
+               c_ptr = &cave[y1 - 1][x];
+               place_outer_grid(c_ptr);
+               c_ptr->feat = feat_glass_wall;
+               c_ptr = &cave[y2 + 1][x];
+               place_outer_grid(c_ptr);
+               c_ptr->feat = feat_glass_wall;
+       }
+
+       switch (randint1(3))
+       {
+       case 1: /* 4 lite breathers + potion */
+               {
+                       int dir1, dir2;
+
+                       /* Prepare allocation table */
+                       get_mon_num_prep(vault_aux_lite, NULL);
+
+                       /* Place fixed lite berathers */
+                       for (dir1 = 4; dir1 < 8; dir1++)
+                       {
+                               int r_idx = get_mon_num(dun_level);
+
+                               y = yval + 2 * ddy_ddd[dir1];
+                               x = xval + 2 * ddx_ddd[dir1];
+                               if (r_idx) place_monster_aux(0, y, x, r_idx, PM_ALLOW_SLEEP);
+
+                               /* Walls around the breather */
+                               for (dir2 = 0; dir2 < 8; dir2++)
+                               {
+                                       c_ptr = &cave[y + ddy_ddd[dir2]][x + ddx_ddd[dir2]];
+                                       place_inner_grid(c_ptr);
+                                       c_ptr->feat = feat_glass_wall;
+                               }
+                       }
+
+                       /* Walls around the potion */
+                       for (dir1 = 0; dir1 < 4; dir1++)
+                       {
+                               y = yval + 2 * ddy_ddd[dir1];
+                               x = xval + 2 * ddx_ddd[dir1];
+                               c_ptr = &cave[y][x];
+                               place_inner_perm_grid(c_ptr);
+                               c_ptr->feat = feat_permanent_glass_wall;
+                               cave[yval + ddy_ddd[dir1]][xval + ddx_ddd[dir1]].info |= (CAVE_ICKY);
+                       }
+
+                       /* Glass door */
+                       dir1 = randint0(4);
+                       y = yval + 2 * ddy_ddd[dir1];
+                       x = xval + 2 * ddx_ddd[dir1];
+                       place_secret_door(y, x, DOOR_GLASS_DOOR);
+                       c_ptr = &cave[y][x];
+                       if (is_closed_door(c_ptr->feat)) c_ptr->mimic = feat_glass_wall;
+
+                       /* Place a potion */
+                       get_obj_num_hook = kind_is_potion;
+                       place_object(yval, xval, AM_NO_FIXED_ART);
+                       cave[yval][xval].info |= (CAVE_ICKY);
+               }
+               break;
+
+       case 2: /* 1 lite breather + random object */
+               {
+                       int r_idx, dir1;
+
+                       /* Pillars */
+                       c_ptr = &cave[y1 + 1][x1 + 1];
+                       place_inner_grid(c_ptr);
+                       c_ptr->feat = feat_glass_wall;
+
+                       c_ptr = &cave[y1 + 1][x2 - 1];
+                       place_inner_grid(c_ptr);
+                       c_ptr->feat = feat_glass_wall;
+
+                       c_ptr = &cave[y2 - 1][x1 + 1];
+                       place_inner_grid(c_ptr);
+                       c_ptr->feat = feat_glass_wall;
+
+                       c_ptr = &cave[y2 - 1][x2 - 1];
+                       place_inner_grid(c_ptr);
+                       c_ptr->feat = feat_glass_wall;
+
+                       /* Prepare allocation table */
+                       get_mon_num_prep(vault_aux_lite, NULL);
+
+                       r_idx = get_mon_num(dun_level);
+                       if (r_idx) place_monster_aux(0, yval, xval, r_idx, 0L);
+
+                       /* Walls around the breather */
+                       for (dir1 = 0; dir1 < 8; dir1++)
+                       {
+                               c_ptr = &cave[yval + ddy_ddd[dir1]][xval + ddx_ddd[dir1]];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                       }
+
+                       /* Curtains around the breather */
+                       for (y = yval - 1; y <= yval + 1; y++)
+                       {
+                               place_closed_door(y, xval - 2, DOOR_CURTAIN);
+                               place_closed_door(y, xval + 2, DOOR_CURTAIN);
+                       }
+                       for (x = xval - 1; x <= xval + 1; x++)
+                       {
+                               place_closed_door(yval - 2, x, DOOR_CURTAIN);
+                               place_closed_door(yval + 2, x, DOOR_CURTAIN);
+                       }
+
+                       /* Place an object */
+                       place_object(yval, xval, AM_NO_FIXED_ART);
+                       cave[yval][xval].info |= (CAVE_ICKY);
+               }
+               break;
+
+       case 3: /* 4 shards breathers + 2 potions */
+               {
+                       int dir1;
+
+                       /* Walls around the potion */
+                       for (y = yval - 2; y <= yval + 2; y++)
+                       {
+                               c_ptr = &cave[y][xval - 3];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                               c_ptr = &cave[y][xval + 3];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                       }
+                       for (x = xval - 2; x <= xval + 2; x++)
+                       {
+                               c_ptr = &cave[yval - 3][x];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                               c_ptr = &cave[yval + 3][x];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                       }
+                       for (dir1 = 4; dir1 < 8; dir1++)
+                       {
+                               c_ptr = &cave[yval + 2 * ddy_ddd[dir1]][xval + 2 * ddx_ddd[dir1]];
+                               place_inner_grid(c_ptr);
+                               c_ptr->feat = feat_glass_wall;
+                       }
+
+                       /* Prepare allocation table */
+                       get_mon_num_prep(vault_aux_shards, NULL);
+
+                       /* Place shard berathers */
+                       for (dir1 = 4; dir1 < 8; dir1++)
+                       {
+                               int r_idx = get_mon_num(dun_level);
+
+                               y = yval + ddy_ddd[dir1];
+                               x = xval + ddx_ddd[dir1];
+                               if (r_idx) place_monster_aux(0, y, x, r_idx, 0L);
+                       }
+
+                       /* Place two potions */
+                       if (one_in_(2))
+                       {
+                               get_obj_num_hook = kind_is_potion;
+                               place_object(yval, xval - 1, AM_NO_FIXED_ART);
+                               get_obj_num_hook = kind_is_potion;
+                               place_object(yval, xval + 1, AM_NO_FIXED_ART);
+                       }
+                       else
+                       {
+                               get_obj_num_hook = kind_is_potion;
+                               place_object(yval - 1, xval, AM_NO_FIXED_ART);
+                               get_obj_num_hook = kind_is_potion;
+                               place_object(yval + 1, xval, AM_NO_FIXED_ART);
+                       }
+
+                       for (y = yval - 2; y <= yval + 2; y++)
+                               for (x = xval - 2; x <= xval + 2; x++)
+                                       cave[y][x].info |= (CAVE_ICKY);
+
+               }
+               break;
+       }
+
+       /* Message */
+       if (cheat_room)
+       {
+#ifdef JP
+               msg_print("¥¬¥é¥¹¤ÎÉô²°");
+#else
+               msg_print("Glass room");
+#endif
+       }
+
+       return TRUE;
+}
+
+
+/* Create a new floor room with optional light */
+void generate_room_floor(int y1, int x1, int y2, int x2, int light)
+{
+       int y, x;
+       
+       cave_type *c_ptr;
+
+       for (y = y1; y <= y2; y++)
+       {
+               for (x = x1; x <= x2; x++)
+               {
+                       /* Point to grid */
+                       c_ptr = &cave[y][x];
+                       place_floor_grid(c_ptr);
+                       c_ptr->info |= (CAVE_ROOM);
+                       if (light) c_ptr->info |= (CAVE_GLOW);
+               }
+       }
+}
+
+void generate_fill_perm_bold(int y1, int x1, int y2, int x2)
+{
+       int y, x;
+
+       for (y = y1; y <= y2; y++)
+       {
+               for (x = x1; x <= x2; x++)
+               {
+                       /* Point to grid */
+                       place_extra_perm_bold(y, x);
+               }
+       }
+}
+
+/* Minimum & maximum town size */
+#define MIN_TOWN_WID ((MAX_WID / 3) / 2)
+#define MIN_TOWN_HGT ((MAX_HGT / 3) / 2)
+#define MAX_TOWN_WID ((MAX_WID / 3) * 2 / 3)
+#define MAX_TOWN_HGT ((MAX_HGT / 3) * 2 / 3)
+
+/* Struct for build underground buildings */
+typedef struct
+{
+       int y0, x0; /* North-west corner (relative) */
+       int y1, x1; /* South-east corner (relative) */
+}
+ugbldg_type;
+
+ugbldg_type *ugbldg;
+
+/*
+ * Precalculate buildings' location of underground arcade
+ */
+static bool precalc_ugarcade(int town_hgt, int town_wid, int n)
+{
+       int i, y, x, center_y, center_x, tmp, attempt = 10000;
+       int max_bldg_hgt = 3 * town_hgt / MAX_TOWN_HGT;
+       int max_bldg_wid = 5 * town_wid / MAX_TOWN_WID;
+       ugbldg_type *cur_ugbldg;
+       bool **ugarcade_used, abort;
+
+       /* Allocate "ugarcade_used" array (2-dimension) */
+       C_MAKE(ugarcade_used, town_hgt, bool *);
+       C_MAKE(*ugarcade_used, town_hgt * town_wid, bool);
+       for (y = 1; y < town_hgt; y++) ugarcade_used[y] = *ugarcade_used + y * town_wid;
+
+       /* Calculate building locations */
+       for (i = 0; i < n; i++)
+       {
+               cur_ugbldg = &ugbldg[i];
+               (void)WIPE(cur_ugbldg, ugbldg_type);
+
+               do
+               {
+                       /* Find the "center" of the store */
+                       center_y = rand_range(2, town_hgt - 3);
+                       center_x = rand_range(2, town_wid - 3);
+
+                       /* Determine the store boundaries */
+                       tmp = center_y - randint1(max_bldg_hgt);
+                       cur_ugbldg->y0 = MAX(tmp, 1);
+                       tmp = center_x - randint1(max_bldg_wid);
+                       cur_ugbldg->x0 = MAX(tmp, 1);
+                       tmp = center_y + randint1(max_bldg_hgt);
+                       cur_ugbldg->y1 = MIN(tmp, town_hgt - 2);
+                       tmp = center_x + randint1(max_bldg_wid);
+                       cur_ugbldg->x1 = MIN(tmp, town_wid - 2);
+
+                       /* Scan this building's area */
+                       for (abort = FALSE, y = cur_ugbldg->y0; (y <= cur_ugbldg->y1) && !abort; y++)
+                       {
+                               for (x = cur_ugbldg->x0; x <= cur_ugbldg->x1; x++)
+                               {
+                                       if (ugarcade_used[y][x])
+                                       {
+                                               abort = TRUE;
+                                               break;
+                                       }
+                               }
+                       }
+
+                       attempt--;
+               }
+               while (abort && attempt); /* Accept this building if no overlapping */
+
+               /* Failed to generate underground arcade */
+               if (!attempt) break;
+
+               /*
+                * Mark to ugarcade_used[][] as "used"
+                * Note: Building-adjacent grids are included for preventing
+                * connected bulidings.
+                */
+               for (y = cur_ugbldg->y0 - 1; y <= cur_ugbldg->y1 + 1; y++)
+               {
+                       for (x = cur_ugbldg->x0 - 1; x <= cur_ugbldg->x1 + 1; x++)
+                       {
+                               ugarcade_used[y][x] = TRUE;
+                       }
+               }
+       }
+
+       /* Free "ugarcade_used" array (2-dimension) */
+       C_KILL(*ugarcade_used, town_hgt * town_wid, bool);
+       C_KILL(ugarcade_used, town_hgt, bool *);
+
+       /* If i < n, generation is not allowed */
+       return i == n;
+}
+
+/*
+ * Actually create buildings
+ * Note: ltcy and ltcx indicate "left top corner".
+ */
+static void build_stores(int ltcy, int ltcx, int stores[], int n)
+{
+       int i, j, y, x;
+       ugbldg_type *cur_ugbldg;
+
+       for (i = 0; i < n; i++)
+       {
+               cur_ugbldg = &ugbldg[i];
+
+               /* Generate new room */
+               generate_room_floor(
+                       ltcy + cur_ugbldg->y0 - 2, ltcx + cur_ugbldg->x0 - 2,
+                       ltcy + cur_ugbldg->y1 + 2, ltcx + cur_ugbldg->x1 + 2,
+                       FALSE);
+       }
+
+       for (i = 0; i < n; i++)
+       {
+               cur_ugbldg = &ugbldg[i];
+
+               /* Build an invulnerable rectangular building */
+               generate_fill_perm_bold(
+                       ltcy + cur_ugbldg->y0, ltcx + cur_ugbldg->x0,
+                       ltcy + cur_ugbldg->y1, ltcx + cur_ugbldg->x1);
+
+               /* Pick a door direction (S,N,E,W) */
+               switch (randint0(4))
+               {
+               /* Bottom side */
+               case 0:
+                       y = cur_ugbldg->y1;
+                       x = rand_range(cur_ugbldg->x0, cur_ugbldg->x1);
+                       break;
+
+               /* Top side */
+               case 1:
+                       y = cur_ugbldg->y0;
+                       x = rand_range(cur_ugbldg->x0, cur_ugbldg->x1);
+                       break;
+
+               /* Right side */
+               case 2:
+                       y = rand_range(cur_ugbldg->y0, cur_ugbldg->y1);
+                       x = cur_ugbldg->x1;
+                       break;
+
+               /* Left side */
+               default:
+                       y = rand_range(cur_ugbldg->y0, cur_ugbldg->y1);
+                       x = cur_ugbldg->x0;
+                       break;
+               }
+
+               for (j = 0; j < max_f_idx; j++)
+               {
+                       if (have_flag(f_info[j].flags, FF_STORE))
+                       {
+                               if (f_info[j].subtype == stores[i]) break;
+                       }
+               }
+
+               /* Clear previous contents, add a store door */
+               if (j < max_f_idx)
+               {
+                       cave_set_feat(ltcy + y, ltcx + x, j);
+
+                       /* Init store */
+                       store_init(NO_TOWN, stores[i]);
+               }
+       }
+}
+
+
+/*
+ * Type 16 -- Underground Arcade
+ *
+ * Town logic flow for generation of new town
+ * Originally from Vanilla 3.0.3
+ *
+ * We start with a fully wiped cave of normal floors.
+ *
+ * Note that town_gen_hack() plays games with the R.N.G.
+ *
+ * This function does NOT do anything about the owners of the stores,
+ * nor the contents thereof.  It only handles the physical layout.
+ */
+static bool build_type16(void)
+{
+       int stores[] =
+       {
+               STORE_GENERAL, STORE_ARMOURY, STORE_WEAPON, STORE_TEMPLE,
+               STORE_ALCHEMIST, STORE_MAGIC, STORE_BLACK, STORE_BOOK,
+       };
+       int n = sizeof stores / sizeof (int);
+       int i, y, x, y1, x1, yval, xval;
+       int town_hgt = rand_range(MIN_TOWN_HGT, MAX_TOWN_HGT);
+       int town_wid = rand_range(MIN_TOWN_WID, MAX_TOWN_WID);
+       bool prevent_bm = FALSE;
+
+       /* Hack -- If already exist black market, prevent building */
+       for (y = 0; (y < cur_hgt) && !prevent_bm; y++)
+       {
+               for (x = 0; x < cur_wid; x++)
+               {
+                       if (cave[y][x].feat == FF_STORE)
+                       {
+                               prevent_bm = (f_info[cave[y][x].feat].subtype == STORE_BLACK);
+                               break;
+                       }
+               }
+       }
+       for (i = 0; i < n; i++)
+       {
+               if ((stores[i] == STORE_BLACK) && prevent_bm) stores[i] = stores[--n];
+       }
+       if (!n) return FALSE;
+
+       /* Allocate buildings array */
+       C_MAKE(ugbldg, n, ugbldg_type);
+
+       /* If cannot build stores, abort */
+       if (!precalc_ugarcade(town_hgt, town_wid, n))
+       {
+               /* Free buildings array */
+               C_KILL(ugbldg, n, ugbldg_type);
+               return FALSE;
+       }
+
+       /* Find and reserve some space in the dungeon.  Get center of room. */
+       if (!find_space(&yval, &xval, town_hgt + 4, town_wid + 4))
+       {
+               /* Free buildings array */
+               C_KILL(ugbldg, n, ugbldg_type);
+               return FALSE;
+       }
+
+       /* Get top left corner */
+       y1 = yval - (town_hgt / 2);
+       x1 = xval - (town_wid / 2);
+
+       /* Generate new room */
+       generate_room_floor(
+               y1 + town_hgt / 3, x1 + town_wid / 3,
+               y1 + town_hgt * 2 / 3, x < x1 + town_wid * 2 / 3, FALSE);
+
+       /* Build stores */
+       build_stores(y1, x1, stores, n);
+
+#ifdef JP
+       if (cheat_room) msg_print("Ãϲ¼³¹");
+#else
+       if (cheat_room) msg_print("Underground Arcade");
+#endif
+
+       /* Free buildings array */
+       C_KILL(ugbldg, n, ugbldg_type);
+
+       return TRUE;
+}
+
+
+/*
+ * Attempt to build a room of the given type at the given block
+ *
+ * Note that we restrict the number of "crowded" rooms to reduce
+ * the chance of overflowing the monster list during level creation.
+ */
+static bool room_build(int typ)
+{
+       /* Build a room */
+       switch (typ)
+       {
+       /* Build an appropriate room */
+       case ROOM_T_NORMAL:        return build_type1();
+       case ROOM_T_OVERLAP:       return build_type2();
+       case ROOM_T_CROSS:         return build_type3();
+       case ROOM_T_INNER_FEAT:    return build_type4();
+       case ROOM_T_NEST:          return build_type5();
+       case ROOM_T_PIT:           return build_type6();
+       case ROOM_T_LESSER_VAULT:  return build_type7();
+       case ROOM_T_GREATER_VAULT: return build_type8();
+       case ROOM_T_FRACAVE:       return build_type9();
+       case ROOM_T_RANDOM_VAULT:  return build_type10();
+       case ROOM_T_OVAL:          return build_type11();
+       case ROOM_T_CRYPT:         return build_type12();
+       case ROOM_T_TRAP_PIT:      return build_type13();
+       case ROOM_T_TRAP:          return build_type14();
+       case ROOM_T_GLASS:         return build_type15();
+       case ROOM_T_ARCADE:        return build_type16();
+       }
+
+       /* Paranoia */
+       return FALSE;
+}
+
+
+#define MOVE_PLIST(dst, src) (prob_list[dst] += prob_list[src], prob_list[src] = 0)
+
+/*
+ * [from SAngband (originally from OAngband)]
+ * 
+ * Generate rooms in dungeon.  Build bigger rooms at first.
+ */
+bool generate_rooms(void)
+{
+       int i;
+       bool remain;
+       int crowded = 0;
+       int total_prob;
+       int prob_list[ROOM_T_MAX];
+       int rooms_built = 0;
+       int area_size = 100 * (cur_hgt*cur_wid) / (MAX_HGT*MAX_WID);
+       int level_index = MIN(10, div_round(dun_level, 10));
+
+       /* Number of each type of room on this level */
+       s16b room_num[ROOM_T_MAX];
+
+       /* Limit number of rooms */
+       int dun_rooms = DUN_ROOMS_MAX * area_size / 100;
+
+       /* Assume normal cave */
+       room_info_type *room_info_ptr = room_info_normal;
+
+       /*
+        * Initialize probability list.
+        */
+       for (i = 0; i < ROOM_T_MAX; i++)
+       {
+               /* No rooms allowed above their minimum depth. */
+               if (dun_level < room_info_ptr[i].min_level)
+               {
+                       prob_list[i] = 0;
+               }
+               else
+               {
+                       prob_list[i] = room_info_ptr[i].prob[level_index];
+               }
+       }
+
+       /*
+        * XXX -- Various dungeon types and options.
+        */
+
+       /* Ironman sees only Greater Vaults */
+       if (ironman_rooms && !((d_info[dungeon_type].flags1 & (DF1_BEGINNER | DF1_CHAMELEON | DF1_SMALLEST))))
+       {
+               for (i = 0; i < ROOM_T_MAX; i++)
+               {
+                       if (i == ROOM_T_GREATER_VAULT) prob_list[i] = 1;
+                       else prob_list[i] = 0;
+               }
+       }
+
+       /* Forbidden vaults */
+       else if (d_info[dungeon_type].flags1 & DF1_NO_VAULT)
+       {
+               prob_list[ROOM_T_LESSER_VAULT] = 0;
+               prob_list[ROOM_T_GREATER_VAULT] = 0;
+               prob_list[ROOM_T_RANDOM_VAULT] = 0;
+       }
+
+
+       /* NO_CAVE dungeon (Castle)*/
+       if (d_info[dungeon_type].flags1 & DF1_NO_CAVE)
+       {
+               MOVE_PLIST(ROOM_T_NORMAL, ROOM_T_FRACAVE);
+               MOVE_PLIST(ROOM_T_INNER_FEAT, ROOM_T_CRYPT);
+               MOVE_PLIST(ROOM_T_INNER_FEAT, ROOM_T_OVAL);
+       }
+
+       /* CAVE dungeon (Orc cave etc.) */
+       else if (d_info[dungeon_type].flags1 & DF1_CAVE)
+       {
+               MOVE_PLIST(ROOM_T_FRACAVE, ROOM_T_NORMAL);
+       }
+
+       /* No caves when a (random) cavern exists: they look bad */
+       else if (dun->cavern || dun->empty_level)
+       {
+               prob_list[ROOM_T_FRACAVE] = 0;
+       }
+
+       /* Forbidden glass rooms */
+       if (!(d_info[dungeon_type].flags1 & DF1_GLASS_ROOM))
+       {
+               prob_list[ROOM_T_GLASS] = 0;
+       }
+
+       if (!(d_info[dungeon_type].flags1 & DF1_ARCADE))
+       {
+               prob_list[ROOM_T_ARCADE] = 0;
+       }
+
+       /*
+        * Initialize number of rooms,
+        * And calcurate total probability.
+        */
+       for (total_prob = 0, i = 0; i < ROOM_T_MAX; i++)
+       {
+               room_num[i] = 0;
+               total_prob += prob_list[i];
+       }
+
+       /*
+        * Prepare the number of rooms, of all types, we should build
+        * on this level.
+        */
+       for (i = dun_rooms; i > 0; i--)
+       {
+               int room_type;
+               int rand = randint0(total_prob);
+
+               /* Get room_type randomly */
+               for (room_type = 0; room_type < ROOM_T_MAX; room_type++)
+               {
+                       if (rand < prob_list[room_type]) break;
+                       else rand -= prob_list[room_type];
+               }
+
+               /* Paranoia */
+               if (room_type >= ROOM_T_MAX) room_type = ROOM_T_NORMAL;
+
+               /* Increase the number of rooms of that type we should build. */
+               room_num[room_type]++;
+
+               switch (room_type)
+               {
+               case ROOM_T_NEST:
+               case ROOM_T_PIT:
+               case ROOM_T_LESSER_VAULT:
+               case ROOM_T_TRAP_PIT:
+               case ROOM_T_GLASS:
+               case ROOM_T_ARCADE:
+
+                       /* Large room */
+                       i -= 2;
+                       break;
+
+               case ROOM_T_GREATER_VAULT:
+               case ROOM_T_RANDOM_VAULT:
+
+                       /* Largest room */
+                       i -= 3;
+                       break;
+               }
+       }
+
+       /*
+        * Build each type of room one by one until we cannot build any more.
+        * [from SAngband (originally from OAngband)]
+        */
+       while (TRUE)
+       {
+               /* Assume no remaining rooms */
+               remain = FALSE;
+
+               for (i = 0; i < ROOM_T_MAX; i++)
+               {
+                       /* What type of room are we building now? */
+                       int room_type = room_build_order[i];
+
+                       /* Go next if none available */
+                       if (!room_num[room_type]) continue;
+
+                       /* Use up one unit */
+                       room_num[room_type]--;
+
+                       /* Build the room. */
+                       if (room_build(room_type))
+                       {
+                               /* Increase the room built count. */
+                               rooms_built++;
+
+                               /* Mark as there was some remaining rooms */
+                               remain = TRUE;
+
+                               switch (room_type)
+                               {
+                               case ROOM_T_PIT:
+                               case ROOM_T_NEST:
+                               case ROOM_T_TRAP_PIT:
+
+                                       /* Avoid too many monsters */
+                                       if (++crowded >= 2)
+                                       {
+                                               room_num[ROOM_T_PIT] = 0;
+                                               room_num[ROOM_T_NEST] = 0;
+                                               room_num[ROOM_T_TRAP_PIT] = 0;
+                                       }
+                                       break;
+
+                               case ROOM_T_ARCADE:
+
+                                       /* Avoid double-town */
+                                       room_num[ROOM_T_ARCADE] = 0;
+                                       break;
+                               }
+                       }
+               }
+
+               /* End loop if no room remain */
+               if (!remain) break;
+       }
+
+       if (rooms_built < 1) return FALSE;
+
+       if (cheat_room)
+       {
+#ifdef JP
+               msg_format("Éô²°¿ô: %d", rooms_built);
+#else
+               msg_format("Number of Rooms: %d", rooms_built);
+#endif
+       }
+
+       return TRUE;
 }