games/hack/hack.vault.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.vault.c - version 1.0.2 */
   3 /* $FreeBSD: src/games/hack/hack.vault.c,v 1.4 1999/11/16 10:26:38 marcel Exp $ */
   4
   5 #include "hack.h"
   6 #ifdef QUEST
   7 void
   8 setgd(void)
   9 {
  10 }
  11
  12 int
  13 gd_move(void)
  14 {
  15         return (2);
  16 }
  17
  18 void
  19 gddead(struct monst *mtmp __unused)
  20 {
  21 }
  22
  23 void
  24 replgd(struct monst *mtmp __unused, struct monst *mtmp2 __unused)
  25 {
  26 }
  27
  28 void
  29 invault(void)
  30 {
  31 }
  32
  33 #else
  34
  35 #define FCSIZ   (ROWNO + COLNO)
  36 struct fakecorridor {
  37         xchar fx, fy, ftyp;
  38 };
  39
  40 struct egd {
  41         int fcbeg, fcend;       /* fcend: first unused pos */
  42         xchar gdx, gdy; /* goal of guard's walk */
  43         unsigned gddone:1;
  44         struct fakecorridor fakecorr[FCSIZ];
  45 };
  46
  47 static struct permonst pm_guard =
  48 { "guard", '@', 12, 12, -1, 4, 10, sizeof(struct egd) };
  49
  50 static struct monst *guard;
  51 static int gdlevel;
  52 #define EGD     ((struct egd *)(&(guard->mextra[0])))
  53
  54 static void restfakecorr(void);
  55 static bool goldincorridor(void);
  56
  57 static void
  58 restfakecorr(void)
  59 {
  60         int fcx, fcy, fcbeg;
  61         struct rm *crm;
  62
  63         while ((fcbeg = EGD->fcbeg) < EGD->fcend) {
  64                 fcx = EGD->fakecorr[fcbeg].fx;
  65                 fcy = EGD->fakecorr[fcbeg].fy;
  66                 if ((u.ux == fcx && u.uy == fcy) || cansee(fcx, fcy) ||
  67                     m_at(fcx, fcy))
  68                         return;
  69                 crm = &levl[fcx][fcy];
  70                 crm->typ = EGD->fakecorr[fcbeg].ftyp;
  71                 if (!crm->typ)
  72                         crm->seen = 0;
  73                 newsym(fcx, fcy);
  74                 EGD->fcbeg++;
  75         }
  76         /* it seems he left the corridor - let the guard disappear */
  77         mondead(guard);
  78         guard = NULL;
  79 }
  80
  81 static bool
  82 goldincorridor(void)
  83 {
  84         int fci;
  85
  86         for (fci = EGD->fcbeg; fci < EGD->fcend; fci++)
  87                 if (g_at(EGD->fakecorr[fci].fx, EGD->fakecorr[fci].fy))
  88                         return (1);
  89         return (0);
  90 }
  91
  92 void
  93 setgd(void)
  94 {
  95         struct monst *mtmp;
  96
  97         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
  98                 if (mtmp->isgd) {
  99                         guard = mtmp;
 100                         gdlevel = dlevel;
 101                         return;
 102                 }
 103         guard = NULL;
 104 }
 105
 106 void
 107 invault(void)
 108 {
 109         int tmp = inroom(u.ux, u.uy);
 110
 111         if (tmp < 0 || rooms[tmp].rtype != VAULT) {
 112                 u.uinvault = 0;
 113                 return;
 114         }
 115         if (++u.uinvault % 50 == 0 && (!guard || gdlevel != dlevel)) {
 116                 char buf[BUFSZ];
 117                 int x, y, dd, gx, gy;
 118
 119                 /* first find the goal for the guard */
 120                 for (dd = 1; (dd < ROWNO || dd < COLNO); dd++) {
 121                         for (y = u.uy - dd; y <= u.uy + dd; y++) {
 122                                 if (y < 0 || y > ROWNO - 1)
 123                                         continue;
 124                                 for (x = u.ux - dd; x <= u.ux + dd; x++) {
 125                                         if (y != u.uy - dd && y != u.uy + dd && x != u.ux - dd)
 126                                                 x = u.ux + dd;
 127                                         if (x < 0 || x > COLNO - 1)
 128                                                 continue;
 129                                         if (levl[x][y].typ == CORR)
 130                                                 goto fnd;
 131                                 }
 132                         }
 133                 }
 134                 impossible("Not a single corridor on this level??");
 135                 tele();
 136                 return;
 137 fnd:
 138                 gx = x;
 139                 gy = y;
 140
 141                 /* next find a good place for a door in the wall */
 142                 x = u.ux;
 143                 y = u.uy;
 144                 while (levl[x][y].typ == ROOM) {
 145                         int dx, dy;
 146
 147                         dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
 148                         dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
 149                         if (abs(gx - x) >= abs(gy - y))
 150                                 x += dx;
 151                         else
 152                                 y += dy;
 153                 }
 154
 155                 /* make something interesting happen */
 156                 if (!(guard = makemon(&pm_guard, x, y)))
 157                         return;
 158                 guard->isgd = guard->mpeaceful = 1;
 159                 EGD->gddone = 0;
 160                 gdlevel = dlevel;
 161                 if (!cansee(guard->mx, guard->my)) {
 162                         mondead(guard);
 163                         guard = NULL;
 164                         return;
 165                 }
 166
 167                 pline("Suddenly one of the Vault's guards enters!");
 168                 pmon(guard);
 169                 do {
 170                         pline("\"Hello stranger, who are you?\" - ");
 171                         getlin(buf);
 172                 } while (!letter(buf[0]));
 173
 174                 if (!strcmp(buf, "Croesus") || !strcmp(buf, "Kroisos")) {
 175                         pline("\"Oh, yes - of course. Sorry to have disturbed you.\"");
 176                         mondead(guard);
 177                         guard = NULL;
 178                         return;
 179                 }
 180                 clrlin();
 181                 pline("\"I don't know you.\"");
 182                 if (!u.ugold)
 183                         pline("\"Please follow me.\"");
 184                 else {
 185                         pline("\"Most likely all that gold was stolen from this vault.\"");
 186                         pline("\"Please drop your gold (say d$ ) and follow me.\"");
 187                 }
 188                 EGD->gdx = gx;
 189                 EGD->gdy = gy;
 190                 EGD->fcbeg = 0;
 191                 EGD->fakecorr[0].fx = x;
 192                 EGD->fakecorr[0].fy = y;
 193                 EGD->fakecorr[0].ftyp = levl[x][y].typ;
 194                 levl[x][y].typ = DOOR;
 195                 EGD->fcend = 1;
 196         }
 197 }
 198
 199 int
 200 gd_move(void)
 201 {
 202         int x, y, dx, dy, gx, gy, nx, ny, typ;
 203         struct fakecorridor *fcp;
 204         struct rm *crm;
 205
 206         if (!guard || gdlevel != dlevel) {
 207                 impossible("Where is the guard?");
 208                 return (2);     /* died */
 209         }
 210         if (u.ugold || goldincorridor())
 211                 return (0);     /* didnt move */
 212         if (dist(guard->mx, guard->my) > 1 || EGD->gddone) {
 213                 restfakecorr();
 214                 return (0);     /* didnt move */
 215         }
 216         x = guard->mx;
 217         y = guard->my;
 218         /* look around (hor & vert only) for accessible places */
 219         for (nx = x - 1; nx <= x + 1; nx++)
 220                 for (ny = y - 1; ny <= y + 1; ny++) {
 221                         if (nx == x || ny == y)
 222                                 if (nx != x || ny != y)
 223                                         if (isok(nx, ny))
 224                                                 if (!IS_WALL(typ = (crm = &levl[nx][ny])->typ) && typ != POOL) {
 225                                                         int i;
 226                                                         for (i = EGD->fcbeg; i < EGD->fcend; i++)
 227                                                                 if (EGD->fakecorr[i].fx == nx &&
 228                                                                     EGD->fakecorr[i].fy == ny)
 229                                                                         goto nextnxy;
 230                                                         if ((i = inroom(nx, ny)) >= 0 && rooms[i].rtype == VAULT)
 231                                                                 goto nextnxy;
 232                                                         /* seems we found a good place to leave him alone */
 233                                                         EGD->gddone = 1;
 234                                                         if (ACCESSIBLE(typ))
 235                                                                 goto newpos;
 236                                                         crm->typ = (typ == SCORR) ? CORR : DOOR;
 237                                                         goto proceed;
 238                                                 }
 239 nextnxy:        ;
 240                 }
 241         nx = x;
 242         ny = y;
 243         gx = EGD->gdx;
 244         gy = EGD->gdy;
 245         dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
 246         dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
 247         if (abs(gx - x) >= abs(gy - y))
 248                 nx += dx;
 249         else
 250                 ny += dy;
 251
 252         while ((typ = (crm = &levl[nx][ny])->typ) != 0) {
 253                 /* in view of the above we must have IS_WALL(typ) or typ == POOL */
 254                 /* must be a wall here */
 255                 if (isok(nx + nx - x, ny + ny - y) && typ != POOL &&
 256                     ZAP_POS(levl[nx + nx - x][ny + ny - y].typ)) {
 257                         crm->typ = DOOR;
 258                         goto proceed;
 259                 }
 260                 if (dy && nx != x) {
 261                         nx = x;
 262                         ny = y + dy;
 263                         continue;
 264                 }
 265                 if (dx && ny != y) {
 266                         ny = y;
 267                         nx = x + dx;
 268                         dy = 0;
 269                         continue;
 270                 }
 271                 /* I don't like this, but ... */
 272                 crm->typ = DOOR;
 273                 goto proceed;
 274         }
 275         crm->typ = CORR;
 276 proceed:
 277         if (cansee(nx, ny)) {
 278                 mnewsym(nx, ny);
 279                 prl(nx, ny);
 280         }
 281         fcp = &(EGD->fakecorr[EGD->fcend]);
 282         if (EGD->fcend++ == FCSIZ)
 283                 panic("fakecorr overflow");
 284         fcp->fx = nx;
 285         fcp->fy = ny;
 286         fcp->ftyp = typ;
 287 newpos:
 288         if (EGD->gddone)
 289                 nx = ny = 0;
 290         guard->mx = nx;
 291         guard->my = ny;
 292         pmon(guard);
 293         restfakecorr();
 294         return (1);
 295 }
 296
 297 void
 298 gddead(void)
 299 {
 300         guard = NULL;
 301 }
 302
 303 void
 304 replgd(struct monst *mtmp, struct monst *mtmp2)
 305 {
 306         if (mtmp == guard)
 307                 guard = mtmp2;
 308 }
 309
 310 #endif /* QUEST */