games/hack/hack.mkmaze.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.mkmaze.c - version 1.0.2 */
   3 /* $FreeBSD: src/games/hack/hack.mkmaze.c,v 1.4 1999/11/16 10:26:37 marcel Exp $ */
   4 /* $DragonFly: src/games/hack/hack.mkmaze.c,v 1.3 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include "hack.h"
   7 extern struct permonst pm_wizard;
   8 struct permonst hell_hound =
   9         { "hell hound", 'd', 12, 14, 2, 3, 6, 0 };
  10
  11 static void     walkfrom(int, int);
  12 static void     move(int *, int *, int);
  13 static bool     okay(int, int, int);
  14
  15 void
  16 makemaz(void)
  17 {
  18         int x,y;
  19         int zx,zy;
  20         coord mm;
  21         boolean al = (dlevel >= 30 && !flags.made_amulet);
  22
  23         for(x = 2; x < COLNO-1; x++)
  24                 for(y = 2; y < ROWNO-1; y++)
  25                         levl[x][y].typ = (x%2 && y%2) ? 0 : HWALL;
  26         if(al) {
  27             struct monst *mtmp;
  28
  29             zx = 2*(COLNO/4) - 1;
  30             zy = 2*(ROWNO/4) - 1;
  31             for(x = zx-2; x < zx+4; x++) for(y = zy-2; y <= zy+2; y++) {
  32                 levl[x][y].typ =
  33                     (y == zy-2 || y == zy+2 || x == zx-2 || x == zx+3) ? POOL :
  34                     (y == zy-1 || y == zy+1 || x == zx-1 || x == zx+2) ? HWALL:
  35                     ROOM;
  36             }
  37             mkobj_at(AMULET_SYM, zx, zy);
  38             flags.made_amulet = 1;
  39             walkfrom(zx+4, zy);
  40             if((mtmp = makemon(&hell_hound, zx, zy)))
  41                 mtmp->msleep = 1;
  42             if((mtmp = makemon(PM_WIZARD, zx+1, zy))) {
  43                 mtmp->msleep = 1;
  44                 flags.no_of_wizards = 1;
  45             }
  46         } else {
  47             mm = mazexy();
  48             zx = mm.x;
  49             zy = mm.y;
  50             walkfrom(zx,zy);
  51             mksobj_at(WAN_WISHING, zx, zy);
  52             mkobj_at(ROCK_SYM, zx, zy); /* put a rock on top of it */
  53         }
  54
  55         for(x = 2; x < COLNO-1; x++)
  56                 for(y = 2; y < ROWNO-1; y++) {
  57                         switch(levl[x][y].typ) {
  58                         case HWALL:
  59                                 levl[x][y].scrsym = '-';
  60                                 break;
  61                         case ROOM:
  62                                 levl[x][y].scrsym = '.';
  63                                 break;
  64                         }
  65                 }
  66         for(x = rn1(8,11); x; x--) {
  67                 mm = mazexy();
  68                 mkobj_at(rn2(2) ? GEM_SYM : 0, mm.x, mm.y);
  69         }
  70         for(x = rn1(10,2); x; x--) {
  71                 mm = mazexy();
  72                 mkobj_at(ROCK_SYM, mm.x, mm.y);
  73         }
  74         mm = mazexy();
  75         makemon(PM_MINOTAUR, mm.x, mm.y);
  76         for(x = rn1(5,7); x; x--) {
  77                 mm = mazexy();
  78                 makemon((struct permonst *) 0, mm.x, mm.y);
  79         }
  80         for(x = rn1(6,7); x; x--) {
  81                 mm = mazexy();
  82                 mkgold(0L,mm.x,mm.y);
  83         }
  84         for(x = rn1(6,7); x; x--)
  85                 mktrap(0,1,(struct mkroom *) 0);
  86         mm = mazexy();
  87         levl[(xupstair = mm.x)][(yupstair = mm.y)].scrsym = '<';
  88         levl[xupstair][yupstair].typ = STAIRS;
  89         xdnstair = ydnstair = 0;
  90 }
  91
  92 static void
  93 walkfrom(int x, int y)
  94 {
  95 int q,a,dir;
  96 int dirs[4];
  97         levl[x][y].typ = ROOM;
  98         while(1) {
  99                 q = 0;
 100                 for(a = 0; a < 4; a++)
 101                         if(okay(x,y,a)) dirs[q++]= a;
 102                 if(!q) return;
 103                 dir = dirs[rn2(q)];
 104                 move(&x,&y,dir);
 105                 levl[x][y].typ = ROOM;
 106                 move(&x,&y,dir);
 107                 walkfrom(x,y);
 108         }
 109 }
 110
 111 static void
 112 move(int *x, int *y, int dir)
 113 {
 114         switch(dir){
 115                 case 0: --(*y); break;
 116                 case 1: (*x)++; break;
 117                 case 2: (*y)++; break;
 118                 case 3: --(*x); break;
 119         }
 120 }
 121
 122 static bool
 123 okay(int x, int y, int dir)
 124 {
 125         move(&x,&y,dir);
 126         move(&x,&y,dir);
 127         if(x<3 || y<3 || x>COLNO-3 || y>ROWNO-3 || levl[x][y].typ != 0)
 128                 return(0);
 129         else
 130                 return(1);
 131 }
 132
 133 coord
 134 mazexy(void)
 135 {
 136         coord mm;
 137         mm.x = 3 + 2*rn2(COLNO/2 - 2);
 138         mm.y = 3 + 2*rn2(ROWNO/2 - 2);
 139         return mm;
 140 }