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      1 /*	$NetBSD: cypher.c,v 1.24 2021/05/02 12:50:43 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)cypher.c	8.2 (Berkeley) 4/28/95";
     36 #else
     37 __RCSID("$NetBSD: cypher.c,v 1.24 2021/05/02 12:50:43 rillig Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include "extern.h"
     42 
     43 int
     44 cypher(void)
     45 {
     46 	int     n;
     47 	int     junk;
     48 	int     lflag = -1;
     49 	char    buffer[10];
     50 	char   *filename, *rfilename;
     51 	size_t	filename_len;
     52 
     53 	while (wordnumber <= wordcount) {
     54 		if (wordtype[wordnumber] != VERB &&
     55 		    !(wordtype[wordnumber] == OBJECT &&
     56 		    wordvalue[wordnumber] == KNIFE)) {
     57 			printf("%s: How's that?\n",
     58 			    (wordnumber == wordcount) ? words[0] :
     59 			    words[wordnumber]);
     60 			return (-1);
     61 		}
     62 
     63 		switch (wordvalue[wordnumber]) {
     64 
     65 		case AUXVERB:
     66 			/*
     67 			 * Take the following word as the verb (e.g.
     68 			 * "make love", "climb up").
     69 			 */
     70 			wordnumber++;
     71 			continue;
     72 
     73 		case UP:
     74 			if (location[position].access || wiz || tempwiz) {
     75 				if (!location[position].access) {
     76 					printf("Zap!  A gust of wind lifts ");
     77 					puts("you up.");
     78 				}
     79 				if (!moveplayer(location[position].up, AHEAD))
     80 					return (-1);
     81 			} else {
     82 				puts("There is no way up.");
     83 				return (-1);
     84 			}
     85 			lflag = 0;
     86 			break;
     87 
     88 		case DOWN:
     89 			if (!moveplayer(location[position].down, AHEAD))
     90 				return (-1);
     91 			lflag = 0;
     92 			break;
     93 
     94 		case LEFT:
     95 			if (!moveplayer(left, LEFT))
     96 				return (-1);
     97 			lflag = 0;
     98 			break;
     99 
    100 		case RIGHT:
    101 			if (!moveplayer(right, RIGHT))
    102 				return (-1);
    103 			lflag = 0;
    104 			break;
    105 
    106 		case AHEAD:
    107 			if (!moveplayer(ahead, AHEAD))
    108 				return (-1);
    109 			lflag = 0;
    110 			break;
    111 
    112 		case BACK:
    113 			if (!moveplayer(back, BACK))
    114 				return (-1);
    115 			lflag = 0;
    116 			break;
    117 
    118 		case SHOOT:
    119 			if (wordnumber < wordcount &&
    120 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    121 				int things;
    122 				things = 0;
    123 				for (n = 0; n < NUMOFOBJECTS; n++)
    124 					if (testbit(location[position].objects,
    125 					    n) && objsht[n]) {
    126 						things++;
    127 						wordvalue[wordnumber + 1] = n;
    128 						wordnumber = shoot();
    129 					}
    130 				if (!things)
    131 					puts("Nothing to shoot at!");
    132 				wordnumber++;
    133 				wordnumber++;
    134 			} else
    135 				shoot();
    136 			break;
    137 
    138 		case TAKE:
    139 			if (wordnumber < wordcount &&
    140 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    141 				int things;
    142 				things = 0;
    143 				for (n = 0; n < NUMOFOBJECTS; n++)
    144 					if (testbit(location[position].objects,
    145 					    n) && objsht[n]) {
    146 						things++;
    147 						wordvalue[wordnumber + 1] = n;
    148 						/* Some objects (type NOUNS)
    149 						 * have special treatment in
    150 						 * take().  For these we
    151 						 * must set the type to NOUNS.
    152 						 * However for SWORD and BODY
    153 						 * all it does is find which
    154 						 * of many objects is meant,
    155 						 * so we need do nothing here.
    156 						 * BATHGOD must become
    157 						 * NORMGOD as well.  NOUNS
    158 						 * with no special case
    159 						 * must be included here to
    160 						 * get the right error.  DOOR
    161 						 * cannot occur as an object
    162 						 * so need not be included.  */
    163 						switch(n) {
    164 						case BATHGOD:
    165 							wordvalue[wordnumber + 1] = NORMGOD;
    166 							/* FALLTHROUGH */
    167 						case NORMGOD:
    168 						case AMULET:
    169 						case MEDALION:
    170 						case TALISMAN:
    171 						case MAN:
    172 						case TIMER:
    173 						case NATIVE:
    174 							wordtype[wordnumber + 1] = NOUNS;
    175 							break;
    176 						default:
    177 							wordtype[wordnumber + 1] = OBJECT;
    178 						}
    179 						wordnumber = take(location[position].objects);
    180 					}
    181 				wordnumber++;
    182 				wordnumber++;
    183 				if (!things)
    184 					puts("Nothing to take!");
    185 			} else
    186 				take(location[position].objects);
    187 			break;
    188 
    189 		case DROP:
    190 			if (wordnumber < wordcount &&
    191 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    192 				int things;
    193 				things = 0;
    194 				for (n = 0; n < NUMOFOBJECTS; n++)
    195 					if (testbit(inven, n)) {
    196 						things++;
    197 						wordvalue[wordnumber + 1] = n;
    198 						wordnumber = drop("Dropped");
    199 					}
    200 				wordnumber++;
    201 				wordnumber++;
    202 				if (!things)
    203 					puts("Nothing to drop!");
    204 			} else
    205 				drop("Dropped");
    206 			break;
    207 
    208 		case KICK:
    209 		case THROW:
    210 			if (wordnumber < wordcount &&
    211 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    212 				int things, wv;
    213 				things = 0;
    214 				wv = wordvalue[wordnumber];
    215 				for (n = 0; n < NUMOFOBJECTS; n++)
    216 					if (testbit(inven, n) ||
    217 					    (testbit(location[position].objects, n) && objsht[n])) {
    218 						things++;
    219 						wordvalue[wordnumber + 1] = n;
    220 						wordnumber = throw(wordvalue[wordnumber] == KICK ? "Kicked" : "Thrown");
    221 					}
    222 				wordnumber += 2;
    223 				if (!things)
    224 					printf("Nothing to %s!\n",
    225 					    wv == KICK ? "kick" : "throw");
    226 			} else
    227 				throw(wordvalue[wordnumber] ==
    228 				    KICK ? "Kicked" : "Thrown");
    229 			break;
    230 
    231 		case TAKEOFF:
    232 			if (wordnumber < wordcount &&
    233 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    234 				int things;
    235 				things = 0;
    236 				for (n = 0; n < NUMOFOBJECTS; n++)
    237 					if (testbit(wear, n)) {
    238 						things++;
    239 						wordvalue[wordnumber + 1] = n;
    240 						wordnumber = takeoff();
    241 					}
    242 				wordnumber += 2;
    243 				if (!things)
    244 					puts("Nothing to take off!");
    245 			} else
    246 				takeoff();
    247 			break;
    248 
    249 		case DRAW:
    250 			if (wordnumber < wordcount &&
    251 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    252 				int things;
    253 				things = 0;
    254 				for (n = 0; n < NUMOFOBJECTS; n++)
    255 					if (testbit(wear, n)) {
    256 						things++;
    257 						wordvalue[wordnumber + 1] = n;
    258 						wordnumber = draw();
    259 					}
    260 				wordnumber += 2;
    261 				if (!things)
    262 					puts("Nothing to draw!");
    263 			} else
    264 				draw();
    265 			break;
    266 
    267 		case PUTON:
    268 			if (wordnumber < wordcount &&
    269 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    270 				int things;
    271 				things = 0;
    272 				for (n = 0; n < NUMOFOBJECTS; n++)
    273 					if (testbit(location[position].objects,
    274 					    n) && objsht[n]) {
    275 						things++;
    276 						wordvalue[wordnumber + 1] = n;
    277 						wordnumber = puton();
    278 					}
    279 				wordnumber += 2;
    280 				if (!things)
    281 					puts("Nothing to put on!");
    282 			} else
    283 				puton();
    284 			break;
    285 
    286 		case WEARIT:
    287 			if (wordnumber < wordcount &&
    288 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    289 				int things;
    290 				things = 0;
    291 				for (n = 0; n < NUMOFOBJECTS; n++)
    292 					if (testbit(inven, n)) {
    293 						things++;
    294 						wordvalue[wordnumber + 1] = n;
    295 						wordnumber = wearit();
    296 					}
    297 				wordnumber += 2;
    298 				if (!things)
    299 					puts("Nothing to wear!");
    300 			} else
    301 				wearit();
    302 			break;
    303 
    304 		case EAT:
    305 			if (wordnumber < wordcount &&
    306 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    307 				int things;
    308 				things = 0;
    309 				for (n = 0; n < NUMOFOBJECTS; n++)
    310 					if (testbit(inven, n)) {
    311 						things++;
    312 						wordvalue[wordnumber + 1] = n;
    313 						wordnumber = eat();
    314 					}
    315 				wordnumber += 2;
    316 				if (!things)
    317 					puts("Nothing to eat!");
    318 			} else
    319 				eat();
    320 			break;
    321 
    322 		case PUT:
    323 			put();
    324 			break;
    325 
    326 		case INVEN:
    327 			if (ucard(inven)) {
    328 				puts("You are holding:\n");
    329 				for (n = 0; n < NUMOFOBJECTS; n++)
    330 					if (testbit(inven, n))
    331 						printf("\t%s\n", objsht[n]);
    332 				if (WEIGHT == 0) {
    333 					printf("\n= %d kilogram%s",
    334 					    carrying,
    335 					    (carrying == 1 ? "." : "s."));
    336 					printf(" (can't lift any weight%s)\n",
    337 					    (carrying ?
    338 					    " or move with what you have" :
    339 					    ""));
    340 				} else
    341 					printf("\n= %d kilogram%s (%d%%)\n",
    342 					    carrying,
    343 					    (carrying == 1 ? "." : "s."),
    344 					    carrying * 100 / WEIGHT);
    345 				if (CUMBER == 0) {
    346 					printf("Your arms can't pick ");
    347 					printf("anything up.\n");
    348 				} else
    349 					printf("Your arms are %d%% full.\n",
    350 					    encumber * 100 / CUMBER);
    351 			} else
    352 				puts("You aren't carrying anything.");
    353 
    354 			if (ucard(wear)) {
    355 				puts("\nYou are wearing:\n");
    356 				for (n = 0; n < NUMOFOBJECTS; n++)
    357 					if (testbit(wear, n))
    358 						printf("\t%s\n", objsht[n]);
    359 			} else
    360 				puts("\nYou are stark naked.");
    361 			if (card(injuries, NUMOFINJURIES)) {
    362 				puts("\nYou have suffered:\n");
    363 				for (n = 0; n < NUMOFINJURIES; n++)
    364 					if (injuries[n])
    365 						printf("\t%s\n", ouch[n]);
    366 				printf("\nYou can still carry up to ");
    367 				printf("%d kilogram%s\n", WEIGHT,
    368 				    (WEIGHT == 1 ? "." : "s."));
    369 			} else
    370 				puts("\nYou are in perfect health.");
    371 			wordnumber++;
    372 			break;
    373 
    374 		case USE:
    375 			lflag = use();
    376 			break;
    377 
    378 		case OPEN:
    379 			if (wordnumber < wordcount &&
    380 			    wordvalue[wordnumber + 1] == EVERYTHING) {
    381 				int things;
    382 				things = 0;
    383 				for (n = 0; n < NUMOFOBJECTS; n++)
    384 					if (testbit(inven, n)) {
    385 						things++;
    386 						wordvalue[wordnumber + 1] = n;
    387 						dooropen();
    388 					}
    389 				wordnumber += 2;
    390 				if (!things)
    391 					puts("Nothing to open!");
    392 			} else
    393 				dooropen();
    394 			break;
    395 
    396 		case LOOK:
    397 			if (!notes[CANTSEE] || testbit(inven, LAMPON) ||
    398 			    testbit(location[position].objects, LAMPON)
    399 			    || matchlight) {
    400 				beenthere[position] = 2;
    401 				writedes();
    402 				printobjs();
    403 				if (matchlight) {
    404 					puts("\nYour match splutters out.");
    405 					matchlight = 0;
    406 				}
    407 			} else
    408 				puts("I can't see anything.");
    409 			return (-1);
    410 			break;
    411 
    412 		case SU:
    413 			if (wiz || tempwiz) {
    414 				printf("\nRoom (was %d) = ", position);
    415 				fgets(buffer, 10, stdin);
    416 				if (*buffer != '\n')
    417 					sscanf(buffer, "%d", &position);
    418 				printf("Time (was %d) = ", ourtime);
    419 				fgets(buffer, 10, stdin);
    420 				if (*buffer != '\n')
    421 					sscanf(buffer, "%d", &ourtime);
    422 				printf("Fuel (was %d) = ", fuel);
    423 				fgets(buffer, 10, stdin);
    424 				if (*buffer != '\n')
    425 					sscanf(buffer, "%d", &fuel);
    426 				printf("Torps (was %d) = ", torps);
    427 				fgets(buffer, 10, stdin);
    428 				if (*buffer != '\n')
    429 					sscanf(buffer, "%d", &torps);
    430 				printf("CUMBER (was %d) = ", CUMBER);
    431 				fgets(buffer, 10, stdin);
    432 				if (*buffer != '\n')
    433 					sscanf(buffer, "%d", &CUMBER);
    434 				printf("WEIGHT (was %d) = ", WEIGHT);
    435 				fgets(buffer, 10, stdin);
    436 				if (*buffer != '\n')
    437 					sscanf(buffer, "%d", &WEIGHT);
    438 				printf("Clock (was %d) = ", ourclock);
    439 				fgets(buffer, 10, stdin);
    440 				if (*buffer != '\n')
    441 					sscanf(buffer, "%d", &ourclock);
    442 				printf("Wizard (was %d, %d) = ", wiz, tempwiz);
    443 				fgets(buffer, 10, stdin);
    444 				if (*buffer != '\n') {
    445 					sscanf(buffer, "%d", &junk);
    446 					if (!junk)
    447 						tempwiz = wiz = 0;
    448 				}
    449 				printf("\nDONE.\n");
    450 				return (0);
    451 			} else
    452 				puts("You aren't a wizard.");
    453 			break;
    454 
    455 		case SCORE:
    456 			printf("\tPLEASURE\tPOWER\t\tEGO\n");
    457 			printf("\t%3d\t\t%3d\t\t%3d\n\n", pleasure, power, ego);
    458 			printf("This gives you the rating of ");
    459 			printf("%s in %d turns.\n", rate(), ourtime);
    460 			printf("You have visited %d out of %d rooms ",
    461 			    card(beenthere, NUMOFROOMS), NUMOFROOMS);
    462 			printf("this run (%d%%).\n",
    463 			    card(beenthere, NUMOFROOMS) * 100 / NUMOFROOMS);
    464 			break;
    465 
    466 		case KNIFE:
    467 		case KILL:
    468 			murder();
    469 			break;
    470 
    471 		case UNDRESS:
    472 		case RAVAGE:
    473 			ravage();
    474 			break;
    475 
    476 		case SAVE:
    477 			printf("\nSave file name (default %s): ",
    478 			       DEFAULT_SAVE_FILE);
    479 			filename = fgetln(stdin, &filename_len);
    480 			if (filename_len == 0
    481 			    || (filename_len == 1 && filename[0] == '\n'))
    482 				rfilename = save_file_name(DEFAULT_SAVE_FILE,
    483 				    strlen(DEFAULT_SAVE_FILE));
    484 			else {
    485 				if (filename[filename_len - 1] == '\n')
    486 					filename_len--;
    487 				rfilename = save_file_name(filename,
    488 							   filename_len);
    489 			}
    490 			save(rfilename);
    491 			free(rfilename);
    492 			break;
    493 
    494 		case VERBOSE:
    495 			verbose = 1;
    496 			printf("[Maximum verbosity]\n");
    497 			break;
    498 
    499 		case BRIEF:
    500 			verbose = 0;
    501 			printf("[Standard verbosity]\n");
    502 			break;
    503 
    504 		case FOLLOW:
    505 			lflag = follow();
    506 			break;
    507 
    508 		case GIVE:
    509 			give();
    510 			break;
    511 
    512 		case KISS:
    513 			kiss();
    514 			break;
    515 
    516 		case LOVE:
    517 			love();
    518 			break;
    519 
    520 		case RIDE:
    521 			lflag = ride();
    522 			break;
    523 
    524 		case DRIVE:
    525 			lflag = drive();
    526 			break;
    527 
    528 		case LIGHT:
    529 			light();
    530 			break;
    531 
    532 		case LAUNCH:
    533 			if (!launch())
    534 				return (-1);
    535 			else
    536 				lflag = 0;
    537 			break;
    538 
    539 		case LANDIT:
    540 			if (!land())
    541 				return (-1);
    542 			else
    543 				lflag = 0;
    544 			break;
    545 
    546 		case TIME:
    547 			chime();
    548 			break;
    549 
    550 		case SLEEP:
    551 			zzz();
    552 			break;
    553 
    554 		case DIG:
    555 			dig();
    556 			break;
    557 
    558 		case JUMP:
    559 			lflag = jump();
    560 			break;
    561 
    562 		case BURY:
    563 			bury();
    564 			break;
    565 
    566 		case SWIM:
    567 			puts("Surf's up!");
    568 			break;
    569 
    570 		case DRINK:
    571 			drink();
    572 			break;
    573 
    574 		case QUIT:
    575 			die();
    576 
    577 		default:
    578 			puts("How's that?");
    579 			return (-1);
    580 			break;
    581 
    582 		}
    583 		if (wordnumber < wordcount && *words[wordnumber++] == ',')
    584 			continue;
    585 		else
    586 			return (lflag);
    587 	}
    588 	return (lflag);
    589 }
    590