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      1 /*	$NetBSD: hack.vault.c,v 1.9 2011/08/16 09:26:22 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
      5  * Amsterdam
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions are
     10  * met:
     11  *
     12  * - Redistributions of source code must retain the above copyright notice,
     13  * this list of conditions and the following disclaimer.
     14  *
     15  * - Redistributions in binary form must reproduce the above copyright
     16  * notice, this list of conditions and the following disclaimer in the
     17  * documentation and/or other materials provided with the distribution.
     18  *
     19  * - Neither the name of the Stichting Centrum voor Wiskunde en
     20  * Informatica, nor the names of its contributors may be used to endorse or
     21  * promote products derived from this software without specific prior
     22  * written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     25  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     27  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     28  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     30  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     31  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     32  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     33  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     34  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     35  */
     36 
     37 /*
     38  * Copyright (c) 1982 Jay Fenlason <hack (at) gnu.org>
     39  * All rights reserved.
     40  *
     41  * Redistribution and use in source and binary forms, with or without
     42  * modification, are permitted provided that the following conditions
     43  * are met:
     44  * 1. Redistributions of source code must retain the above copyright
     45  *    notice, this list of conditions and the following disclaimer.
     46  * 2. Redistributions in binary form must reproduce the above copyright
     47  *    notice, this list of conditions and the following disclaimer in the
     48  *    documentation and/or other materials provided with the distribution.
     49  * 3. The name of the author may not be used to endorse or promote products
     50  *    derived from this software without specific prior written permission.
     51  *
     52  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     53  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
     54  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
     55  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     56  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     57  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     58  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     59  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     60  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     61  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     62  */
     63 
     64 #include <sys/cdefs.h>
     65 #ifndef lint
     66 __RCSID("$NetBSD: hack.vault.c,v 1.9 2011/08/16 09:26:22 christos Exp $");
     67 #endif				/* not lint */
     68 
     69 #include "hack.h"
     70 #include "extern.h"
     71 #ifdef QUEST
     72 void
     73 setgd(void)
     74 {
     75 }
     76 
     77 int
     78 gd_move(void)
     79 {
     80 	return (2);
     81 }
     82 
     83 void
     84 gddead(void)
     85 {
     86 }
     87 
     88 void
     89 replgd(struct monst *mtmp __unused, struct monst *mtmp2 __unused)
     90 {
     91 }
     92 
     93 void
     94 invault(void)
     95 {
     96 }
     97 
     98 #else
     99 
    100 
    101 #include "def.mkroom.h"
    102 #define	FCSIZ	(ROWNO+COLNO)
    103 struct fakecorridor {
    104 	xchar           fx, fy, ftyp;
    105 };
    106 
    107 struct egd {
    108 	int             fcbeg, fcend;	/* fcend: first unused pos */
    109 	xchar           gdx, gdy;	/* goal of guard's walk */
    110 	unsigned        gddone:1;
    111 	struct fakecorridor fakecorr[FCSIZ];
    112 };
    113 
    114 static const struct permonst pm_guard =
    115 {"guard", '@', 12, 12, -1, 4, 10, sizeof(struct egd)};
    116 
    117 static struct monst *guard;
    118 static int      gdlevel;
    119 
    120 static void restfakecorr(void);
    121 static int goldincorridor(void);
    122 
    123 static void
    124 restfakecorr(void)
    125 {
    126 	int		fcx, fcy, fcbeg;
    127 	struct rm      *crm;
    128 	struct egd	*egd = monster_private(guard);
    129 
    130 	while ((fcbeg = egd->fcbeg) < egd->fcend) {
    131 		fcx = egd->fakecorr[fcbeg].fx;
    132 		fcy = egd->fakecorr[fcbeg].fy;
    133 		if ((u.ux == fcx && u.uy == fcy) || cansee(fcx, fcy) ||
    134 		    m_at(fcx, fcy))
    135 			return;
    136 		crm = &levl[fcx][fcy];
    137 		crm->typ = egd->fakecorr[fcbeg].ftyp;
    138 		if (!crm->typ)
    139 			crm->seen = 0;
    140 		newsym(fcx, fcy);
    141 		egd->fcbeg++;
    142 	}
    143 	/* it seems he left the corridor - let the guard disappear */
    144 	mondead(guard);
    145 	guard = 0;
    146 }
    147 
    148 static int
    149 goldincorridor(void)
    150 {
    151 	int             fci;
    152 	struct egd	*egd = monster_private(guard);
    153 
    154 	for (fci = egd->fcbeg; fci < egd->fcend; fci++)
    155 		if (g_at(egd->fakecorr[fci].fx, egd->fakecorr[fci].fy))
    156 			return (1);
    157 	return (0);
    158 }
    159 
    160 void
    161 setgd(void)
    162 {
    163 	struct monst   *mtmp;
    164 	for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
    165 		if (mtmp->isgd) {
    166 			guard = mtmp;
    167 			gdlevel = dlevel;
    168 			return;
    169 		}
    170 	guard = 0;
    171 }
    172 
    173 void
    174 invault(void)
    175 {
    176 	int tmp = inroom(u.ux, u.uy);
    177 	struct egd	*egd;
    178 	if (tmp < 0 || rooms[tmp].rtype != VAULT) {
    179 		u.uinvault = 0;
    180 		return;
    181 	}
    182 	if (++u.uinvault % 50 == 0 && (!guard || gdlevel != dlevel)) {
    183 		char            buf[BUFSZ];
    184 		int		x, y, dd, gx, gy;
    185 
    186 		/* first find the goal for the guard */
    187 		for (dd = 1; (dd < ROWNO || dd < COLNO); dd++) {
    188 			for (y = u.uy - dd; y <= u.uy + dd; y++) {
    189 				if (y < 0 || y > ROWNO - 1)
    190 					continue;
    191 				for (x = u.ux - dd; x <= u.ux + dd; x++) {
    192 					if (y != u.uy - dd && y != u.uy + dd && x != u.ux - dd)
    193 						x = u.ux + dd;
    194 					if (x < 0 || x > COLNO - 1)
    195 						continue;
    196 					if (levl[x][y].typ == CORR)
    197 						goto fnd;
    198 				}
    199 			}
    200 		}
    201 		impossible("Not a single corridor on this level??");
    202 		tele();
    203 		return;
    204 fnd:
    205 		gx = x;
    206 		gy = y;
    207 
    208 		/* next find a good place for a door in the wall */
    209 		x = u.ux;
    210 		y = u.uy;
    211 		while (levl[x][y].typ == ROOM) {
    212 			int             dx, dy;
    213 
    214 			dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
    215 			dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
    216 			if (abs(gx - x) >= abs(gy - y))
    217 				x += dx;
    218 			else
    219 				y += dy;
    220 		}
    221 
    222 		/* make something interesting happen */
    223 		if (!(guard = makemon(&pm_guard, x, y)))
    224 			return;
    225 		guard->isgd = guard->mpeaceful = 1;
    226 		egd = monster_private(guard);
    227 		egd->gddone = 0;
    228 		gdlevel = dlevel;
    229 		if (!cansee(guard->mx, guard->my)) {
    230 			mondead(guard);
    231 			guard = 0;
    232 			return;
    233 		}
    234 		pline("Suddenly one of the Vault's guards enters!");
    235 		pmon(guard);
    236 		do {
    237 			pline("\"Hello stranger, who are you?\" - ");
    238 			getlin(buf);
    239 		} while (!letter(buf[0]));
    240 
    241 		if (!strcmp(buf, "Croesus") || !strcmp(buf, "Kroisos")) {
    242 			pline("\"Oh, yes - of course. Sorry to have disturbed you.\"");
    243 			mondead(guard);
    244 			guard = 0;
    245 			return;
    246 		}
    247 		clrlin();
    248 		pline("\"I don't know you.\"");
    249 		if (!u.ugold)
    250 			pline("\"Please follow me.\"");
    251 		else {
    252 			pline("\"Most likely all that gold was stolen from this vault.\"");
    253 			pline("\"Please drop your gold (say d$ ) and follow me.\"");
    254 		}
    255 		egd->gdx = gx;
    256 		egd->gdy = gy;
    257 		egd->fcbeg = 0;
    258 		egd->fakecorr[0].fx = x;
    259 		egd->fakecorr[0].fy = y;
    260 		egd->fakecorr[0].ftyp = levl[x][y].typ;
    261 		levl[x][y].typ = DOOR;
    262 		egd->fcend = 1;
    263 	}
    264 }
    265 
    266 int
    267 gd_move(void)
    268 {
    269 	int             x, y, dx, dy, gx, gy, nx, ny, typ;
    270 	struct fakecorridor *fcp;
    271 	struct rm      *crm;
    272 	struct egd	*egd = monster_private(guard);
    273 	if (!guard || gdlevel != dlevel) {
    274 		impossible("Where is the guard?");
    275 		return (2);	/* died */
    276 	}
    277 	if (u.ugold || goldincorridor())
    278 		return (0);	/* didnt move */
    279 	if (dist(guard->mx, guard->my) > 1 || egd->gddone) {
    280 		restfakecorr();
    281 		return (0);	/* didnt move */
    282 	}
    283 	x = guard->mx;
    284 	y = guard->my;
    285 	/* look around (hor & vert only) for accessible places */
    286 	for (nx = x - 1; nx <= x + 1; nx++)
    287 		for (ny = y - 1; ny <= y + 1; ny++) {
    288 			if (nx == x || ny == y)
    289 				if (nx != x || ny != y)
    290 					if (isok(nx, ny))
    291 						if (!IS_WALL(typ = (crm = &levl[nx][ny])->typ) && typ != POOL) {
    292 							int             i;
    293 							for (i = egd->fcbeg; i < egd->fcend; i++)
    294 								if (egd->fakecorr[i].fx == nx &&
    295 								    egd->fakecorr[i].fy == ny)
    296 									goto nextnxy;
    297 							if ((i = inroom(nx, ny)) >= 0 && rooms[i].rtype == VAULT)
    298 								goto nextnxy;
    299 							/*
    300 							 * seems we found a
    301 							 * good place to
    302 							 * leave him alone
    303 							 */
    304 							egd->gddone = 1;
    305 							if (ACCESSIBLE(typ))
    306 								goto newpos;
    307 							crm->typ = (typ == SCORR) ? CORR : DOOR;
    308 							goto proceed;
    309 						}
    310 	nextnxy:	;
    311 		}
    312 	nx = x;
    313 	ny = y;
    314 	gx = egd->gdx;
    315 	gy = egd->gdy;
    316 	dx = (gx > x) ? 1 : (gx < x) ? -1 : 0;
    317 	dy = (gy > y) ? 1 : (gy < y) ? -1 : 0;
    318 	if (abs(gx - x) >= abs(gy - y))
    319 		nx += dx;
    320 	else
    321 		ny += dy;
    322 
    323 	while ((typ = (crm = &levl[nx][ny])->typ) != 0) {
    324 		/*
    325 		 * in view of the above we must have IS_WALL(typ) or typ ==
    326 		 * POOL
    327 		 */
    328 		/* must be a wall here */
    329 		if (isok(nx + nx - x, ny + ny - y) && typ != POOL &&
    330 		    ZAP_POS(levl[nx + nx - x][ny + ny - y].typ)) {
    331 			crm->typ = DOOR;
    332 			goto proceed;
    333 		}
    334 		if (dy && nx != x) {
    335 			nx = x;
    336 			ny = y + dy;
    337 			continue;
    338 		}
    339 		if (dx && ny != y) {
    340 			ny = y;
    341 			nx = x + dx;
    342 			dy = 0;
    343 			continue;
    344 		}
    345 		/* I don't like this, but ... */
    346 		crm->typ = DOOR;
    347 		goto proceed;
    348 	}
    349 	crm->typ = CORR;
    350 proceed:
    351 	if (cansee(nx, ny)) {
    352 		mnewsym(nx, ny);
    353 		prl(nx, ny);
    354 	}
    355 	fcp = &(egd->fakecorr[egd->fcend]);
    356 	if (egd->fcend++ == FCSIZ)
    357 		panic("fakecorr overflow");
    358 	fcp->fx = nx;
    359 	fcp->fy = ny;
    360 	fcp->ftyp = typ;
    361 newpos:
    362 	if (egd->gddone)
    363 		nx = ny = 0;
    364 	guard->mx = nx;
    365 	guard->my = ny;
    366 	pmon(guard);
    367 	restfakecorr();
    368 	return (1);
    369 }
    370 
    371 void
    372 gddead(void)
    373 {
    374 	guard = 0;
    375 }
    376 
    377 void
    378 replgd(struct monst *mtmp, struct monst *mtmp2)
    379 {
    380 	if (mtmp == guard)
    381 		guard = mtmp2;
    382 }
    383 
    384 #endif	/* QUEST */
    385