2 * wumpus.c --- a faithful translation of the classic "Hunt The Wumpus" game.
4 * Translator: Eric S. Raymond <esr@snark.thyrsus.com>
5 * Version: $Id: wumpus.c,v 1.4 1996/05/17 17:30:35 esr Exp esr $
7 * The BASIC source is that posted by Magnus Olsson in USENET article
8 * <9207071854.AA21847@thep.lu.se>: he wrote
10 * >Below is the source code for _one_ (rather simple) Wumpus version,
11 * >which I found in the PC-BLUE collection on SIMTEL20. I believe this is
12 * >pretty much the same version that was published in David Ahl's "101
13 * >Basic Computer Games" (or, possibly, in the sequel).
15 * I have staunchly resisted the temptation to "improve" this game. It
16 * is functionally identical to the BASIC version (source for which
17 * appears in the comments). I fixed some typos in the help text.
19 * Language hackers may be interested to know that he most difficult thing
20 * about the translation was tracking the details required to translate from
21 * 1-origin to 0-origin array indexing.
23 * The only enhancement is a an -s command-line switch for setting the
26 * So, pretend for a little while that your workstation is an ASR-33 and
27 * limber up your fingers for a trip to nostalgia-land...
34 /* 5 REM *** HUNT THE WUMPUS *** */
39 static int j, k, arrows, scratchloc;
40 static char inp[BUFSIZ]; /* common input buffer */
49 static int loc[LOCS], save[LOCS]; /* locations */
56 /* 80 REM *** SET UP CAVE (DODECAHEDRAL NODE LIST) *** */
58 /* 90 FOR J=1 TO 20 */
63 /* 115 DATA 2,5,8,1,3,10,2,4,12,3,5,14,1,4,6 */
64 /* 120 DATA 5,7,15,6,8,17,1,7,9,8,10,18,2,9,11 */
65 /* 125 DATA 10,12,19,3,11,13,12,14,20,4,13,15,6,14,16 */
66 /* 130 DATA 15,17,20,7,16,18,9,17,19,11,18,20,13,16,19 */
67 static int cave[20][3] =
91 /* 135 DEF FNA(X)=INT(20*RND(1))+1 */
92 #define FNA() (rand() % 20)
94 /* 140 DEF FNB(X)=INT(3*RND(1))+1 */
95 #define FNB() (rand() % 3)
97 /* 145 DEF FNC(X)=INT(4*RND(1))+1 */
98 #define FNC() (rand() % 4)
103 (void) printf("%s\n?", prompt);
104 if (fgets(inp, sizeof(inp), stdin))
115 (void) printf("%s\n?", prompt);
116 if (fgets(inp, sizeof(inp), stdin))
117 return(toupper(inp[0]));
124 void print_instructions()
128 /* 375 REM *** INSTRUCTIONS *** */
129 /* 380 PRINT "WELCOME TO 'HUNT THE WUMPUS'" */
130 puts("WELCOME TO 'HUNT THE WUMPUS'");
131 /* 385 PRINT " THE WUMPUS LIVES IN A CAVE OF 20 ROOMS. EACH ROOM" */
132 puts(" THE WUMPUS LIVES IN A CAVE OF 20 ROOMS. EACH ROOM");
133 /* 390 PRINT "HAS 3 TUNNELS LEADING TO OTHER ROOMS. (LOOK AT A" */
134 puts("HAS 3 TUNNELS LEADING TO OTHER ROOMS. (LOOK AT A");
135 /* 395 PRINT "DODECAHEDRON TO SEE HOW THIS WORKS-IF YOU DON'T KNOW" */
136 puts("DODECAHEDRON TO SEE HOW THIS WORKS-IF YOU DON'T KNOW");
137 /* 400 PRINT "WHAT A DODECAHEDRON IS, ASK SOMEONE)" */
138 puts("WHAT A DODECAHEDRON IS, ASK SOMEONE)");
141 /* 410 PRINT " HAZARDS:" */
143 /* 415 PRINT " BOTTOMLESS PITS - TWO ROOMS HAVE BOTTOMLESS PITS IN THEM */
144 puts(" BOTTOMLESS PITS - TWO ROOMS HAVE BOTTOMLESS PITS IN THEM");
145 /* 420 PRINT " IF YOU GO THERE, YOU FALL INTO THE PIT (& LOSE!)" */
146 puts(" IF YOU GO THERE, YOU FALL INTO THE PIT (& LOSE!)");
147 /* 425 PRINT " SUPER BATS - TWO OTHER ROOMS HAVE SUPER BATS. IF YOU" */
148 puts(" SUPER BATS - TWO OTHER ROOMS HAVE SUPER BATS. IF YOU");
149 /* 430 PRINT " GO THERE, A BAT GRABS YOU AND TAKES YOU TO SOME OTHER" */
150 puts(" GO THERE, A BAT GRABS YOU AND TAKES YOU TO SOME OTHER");
151 /* 435 PRINT " ROOM AT RANDOM. (WHICH MAY BE TROUBLESOME)" */
152 puts(" ROOM AT RANDOM. (WHICH MAY BE TROUBLESOME)");
153 /* 440 INPUT "TYPE AN E THEN RETURN ";W9 */
154 (void) getlet("TYPE AN E THEN RETURN ");
155 /* 445 PRINT " WUMPUS:" */
157 /* 450 PRINT " THE WUMPUS IS NOT BOTHERED BY HAZARDS (HE HAS SUCKER" */
158 puts(" THE WUMPUS IS NOT BOTHERED BY HAZARDS (HE HAS SUCKER");
159 /* 455 PRINT " FEET AND IS TOO BIG FOR A BAT TO LIFT). USUALLY" */
160 puts(" FEET AND IS TOO BIG FOR A BAT TO LIFT). USUALLY");
161 /* 460 PRINT " HE IS ASLEEP. TWO THINGS WAKE HIM UP: YOU SHOOTING AN" */
162 puts(" HE IS ASLEEP. TWO THINGS WAKE HIM UP: YOU SHOOTING AN");
163 /* 465 PRINT "ARROW OR YOU ENTERING HIS ROOM." */
164 puts("ARROW OR YOU ENTERING HIS ROOM.");
165 /* 470 PRINT " IF THE WUMPUS WAKES HE MOVES (P=.75) ONE ROOM" */
166 puts(" IF THE WUMPUS WAKES HE MOVES (P=.75) ONE ROOM");
167 /* 475 PRINT " OR STAYS STILL (P=.25). AFTER THAT, IF HE IS WHERE YOU" */
168 puts(" OR STAYS STILL (P=.25). AFTER THAT, IF HE IS WHERE YOU");
169 /* 480 PRINT " ARE, HE EATS YOU UP AND YOU LOSE!" */
170 puts(" ARE, HE EATS YOU UP AND YOU LOSE!");
173 /* 490 PRINT " YOU:" */
175 /* 495 PRINT " EACH TURN YOU MAY MOVE OR SHOOT A CROOKED ARROW" */
176 puts(" EACH TURN YOU MAY MOVE OR SHOOT A CROOKED ARROW");
177 /* 500 PRINT " MOVING: YOU CAN MOVE ONE ROOM (THRU ONE TUNNEL)" */
178 puts(" MOVING: YOU CAN MOVE ONE ROOM (THRU ONE TUNNEL)");
179 /* 505 PRINT " ARROWS: YOU HAVE 5 ARROWS. YOU LOSE WHEN YOU RUN OUT */
180 puts(" ARROWS: YOU HAVE 5 ARROWS. YOU LOSE WHEN YOU RUN OUT");
181 /* 510 PRINT " EACH ARROW CAN GO FROM 1 TO 5 ROOMS. YOU AIM BY TELLING*/
182 puts(" EACH ARROW CAN GO FROM 1 TO 5 ROOMS. YOU AIM BY TELLING");
183 /* 515 PRINT " THE COMPUTER THE ROOM#S YOU WANT THE ARROW TO GO TO." */
184 puts(" THE COMPUTER THE ROOM#S YOU WANT THE ARROW TO GO TO.");
185 /* 520 PRINT " IF THE ARROW CAN'T GO THAT WAY (IF NO TUNNEL) IT MOVES"*/
186 puts(" IF THE ARROW CAN'T GO THAT WAY (IF NO TUNNEL) IT MOVES");
187 /* 525 PRINT " AT RANDOM TO THE NEXT ROOM." */
188 puts(" AT RANDOM TO THE NEXT ROOM.");
189 /* 530 PRINT " IF THE ARROW HITS THE WUMPUS, YOU WIN." */
190 puts(" IF THE ARROW HITS THE WUMPUS, YOU WIN.");
191 /* 535 PRINT " IF THE ARROW HITS YOU, YOU LOSE." */
192 puts(" IF THE ARROW HITS YOU, YOU LOSE.");
193 /* 540 INPUT "TYPE AN E THEN RETURN ";W9 */
194 (void) getlet("TYPE AN E THEN RETURN ");
195 /* 545 PRINT " WARNINGS:" */
197 /* 550 PRINT " WHEN YOU ARE ONE ROOM AWAY FROM A WUMPUS OR HAZARD," */
198 puts(" WHEN YOU ARE ONE ROOM AWAY FROM A WUMPUS OR HAZARD,");
199 /* 555 PRINT " THE COMPUTER SAYS:" */
200 puts(" THE COMPUTER SAYS:");
201 /* 560 PRINT " WUMPUS: 'I SMELL A WUMPUS'" */
202 puts(" WUMPUS: 'I SMELL A WUMPUS'");
203 /* 565 PRINT " BAT : 'BATS NEARBY'" */
204 puts(" BAT : 'BATS NEARBY'");
205 /* 570 PRINT " PIT : 'I FEEL A DRAFT'" */
206 puts(" PIT : 'I FEEL A DRAFT'");
214 /* 585 REM *** PRINT LOCATION & HAZARD WARNINGS *** */
218 /* 595 FOR J=2 TO 6 */
219 /* 600 FOR K=1 TO 3 */
220 /* 605 IF S(L(1),K)<>L(J) THEN 640 */
221 /* 610 ON J-1 GOTO 615,625,625,635,635 */
222 /* 615 PRINT "I SMELL A WUMPUS!" */
224 /* 625 PRINT "I FEEL A DRAFT" */
226 /* 635 PRINT "BATS NEARBY!" */
229 for (k = 0; k < 3; k++)
231 int room = cave[loc[YOU]][k];
233 if (room == loc[WUMPUS])
234 (void) puts("I SMELL A WUMPUS!");
235 else if (room == loc[PIT1] || room == loc[PIT2])
236 (void) puts("I FEEL A DRAFT");
237 else if (room == loc[BATS1] || room == loc[BATS2])
238 (void) puts("BATS NEARBY!");
241 /* 650 PRINT "YOU ARE IN ROOM "L(1) */
242 (void) printf("YOU ARE IN ROOM %d\n", loc[YOU]+1);
244 /* 655 PRINT "TUNNELS LEAD TO "S(L,1);S(L,2);S(L,3) */
245 (void) printf("TUNNELS LEAD TO %d %d %d\n",
246 cave[loc[YOU]][0]+1, cave[loc[YOU]][1]+1, cave[loc[YOU]][2]+1);
258 /* 670 REM *** CHOOSE OPTION *** */
261 /* 675 PRINT "SHOOT OR MOVE (S-M)"; */
263 c = getlet("SHOOT OR MOVE (S-M)");
265 /* 685 IF I$<>"S" THEN 700 */
268 /* 700 IF I$<>"M" THEN 675 */
283 extern void check_shot(), move_wumpus();
286 /* 715 REM *** ARROW ROUTINE *** */
290 /* 725 REM *** PATH OF ARROW *** */
292 /* 735 PRINT "NO. OF ROOMS (1-5)"; */
294 j9 = getnum("NO. OF ROOMS (1-5)");
296 /* 745 IF J9<1 THEN 735 */
297 /* 750 IF J9>5 THEN 735 */
298 if (j9 < 1 || j9 > 5)
301 /* 755 FOR K=1 TO J9 */
302 for (k = 0; k < j9; k++)
304 /* 760 PRINT "ROOM #"; */
306 path[k] = getnum("ROOM #") - 1;
308 /* 770 IF K<=2 THEN 790 */
312 /* 775 IF P(K)<>P(K-2) THEN 790 */
313 if (path[k] != path[k - 2])
316 /* 780 PRINT "ARROWS AREN'T THAT CROOKED - TRY ANOTHER ROOM" */
317 (void) puts("ARROWS AREN'T THAT CROOKED - TRY ANOTHER ROOM");
324 /* 795 REM *** SHOOT ARROW *** */
326 scratchloc = loc[YOU];
328 /* 805 FOR K=1 TO J9 */
329 for (k = 0; k < j9; k++)
333 /* 810 FOR K1=1 TO 3 */
334 for (k1 = 0; k1 < 3; k1++)
336 /* 815 IF S(L,K1)=P(K) THEN 895 */
337 if (cave[scratchloc][k1] == path[k])
340 * This is the only bit of the translation I'm not sure
341 * about. It requires the trajectory of the arrow to
342 * be a path. Without it, all rooms on the trajectory
343 * would be required by the above to be adjacent to the
344 * player, making for a trivial game --- just move to where
345 * you smell a wumpus and shoot into all adjacent passages!
346 * However, I can't find an equivalent in the BASIC.
348 scratchloc = path[k];
350 /* this simulates logic at 895 in the BASIC code */
359 /* 825 REM *** NO TUNNEL FOR ARROW *** */
360 /* 830 L=S(L,FNB(1)) */
361 scratchloc = cave[scratchloc][FNB()];
372 /* 845 PRINT "MISSED" */
373 (void) puts("MISSED");
376 scratchloc = loc[YOU];
378 /* 855 REM *** MOVE WUMPUS *** */
382 /* 865 REM *** AMMO CHECK *** */
384 /* 875 IF A>0 THEN 885 */
395 /* 890 REM *** SEE IF ARROW IS AT L(1) OR AT L(2) */
398 /* 900 IF L<>L(2) THEN 920 */
399 /* 905 PRINT "AHA! YOU GOT THE WUMPUS!" */
402 if (scratchloc == loc[WUMPUS])
404 (void) puts("AHA! YOU GOT THE WUMPUS!");
408 /* 920 IF L<>L(1) THEN 840 */
409 /* 925 PRINT "OUCH! ARROW GOT YOU!" */
411 else if (scratchloc == loc[YOU])
413 (void) puts("OUCH! ARROW GOT YOU!");
420 /* 935 REM *** MOVE WUMPUS ROUTINE *** */
424 /* 945 IF K=4 THEN 955 */
425 /* 950 L(2)=S(L(2),K) */
427 loc[WUMPUS] = cave[loc[WUMPUS]][k];
429 /* 955 IF L(2)<>L THEN 970 */
430 if (loc[WUMPUS] != loc[YOU])
433 /* 960 PRINT "TSK TSK TSK - WUMPUS GOT YOU!" */
434 (void) puts("TSK TSK TSK - WUMPUS GOT YOU!");
444 /* 975 REM *** MOVE ROUTINE *** */
449 /* 985 PRINT "WHERE TO"; */
451 scratchloc = getnum("WHERE TO");
453 /* 995 IF L<1 THEN 985 */
454 /* 1000 IF L>20 THEN 985 */
455 if (scratchloc < 1 || scratchloc > 20)
459 /* 1005 FOR K=1 TO 3 */
460 for (k = 0; k < 3; k++)
462 /* 1010 REM *** CHECK IF LEGAL MOVE *** */
463 /* 1015 IF S(L(1),K)=L THEN 1045 */
464 if (cave[loc[YOU]][k] == scratchloc)
470 /* 1025 IF L=L(1) THEN 1045 */
471 if (scratchloc != loc[YOU])
473 /* 1030 PRINT "NOT POSSIBLE -"; */
474 (void) puts("NOT POSSIBLE -");
481 /* 1040 REM *** CHECK FOR HAZARDS *** */
483 loc[YOU] = scratchloc;
485 if (scratchloc == loc[WUMPUS])
487 /* 1050 REM *** WUMPUS *** */
488 /* 1055 IF L<>L(2) THEN 1090 */
489 /* 1060 PRINT "... OOPS! BUMPED A WUMPUS!" */
490 /* 1065 REM *** MOVE WUMPUS *** */
492 /* 1075 IF F=0 THEN 1090 */
494 (void) puts("... OOPS! BUMPED A WUMPUS!");
497 else if (scratchloc == loc[PIT1] || scratchloc == loc[PIT2])
499 /* 1085 REM *** PIT *** */
500 /* 1090 IF L=L(3) THEN 1100 */
501 /* 1095 IF L<>L(4) THEN 1120 */
502 /* 1100 PRINT "YYYYIIIIEEEE . . . FELL IN PIT" */
505 (void) puts("YYYYIIIIEEEE . . . FELL IN PIT");
508 else if (scratchloc == loc[BATS1] || scratchloc == loc[BATS2])
510 /* 1115 REM *** BATS *** */
511 /* 1120 IF L=L(5) THEN 1130 */
512 /* 1125 IF L<>L(6) THEN 1145 */
513 /* 1130 PRINT "ZAP--SUPER BAT SNATCH! ELSEWHEREVILLE FOR YOU!" */
518 (void) puts("ZAP--SUPER BAT SNATCH! ELSEWHEREVILLE FOR YOU!");
519 scratchloc = loc[YOU] = FNA();
530 if (argc >= 2 && strcmp(argv[1], "-s") == 0)
531 srand(atoi(argv[2]));
533 srand((int)time((long *) 0));
535 /* 15 PRINT "INSTRUCTIONS (Y-N)"; */
537 c = getlet("INSTRUCTIONS (Y-N)");
539 /* 25 IF I$="N" THEN 35 */
543 print_instructions();
545 /* 150 REM *** LOCATE L ARRAY ITEMS *** */
546 /* 155 REM *** 1-YOU, 2-WUMPUS, 3&4-PITS, 5&6-BATS *** */
550 /* 170 FOR J=1 TO 6 */
551 /* 175 L(J)=FNA(0) */
554 for (j = 0; j < LOCS; j++)
555 loc[j] = save[j] = FNA();
557 /* 190 REM *** CHECK FOR CROSSOVERS (IE L(1)=L(2), ETC) *** */
558 /* 195 FOR J=1 TO 6 */
559 /* 200 FOR K=1 TO 6 */
560 /* 205 IF J=K THEN 215 */
561 /* 210 IF L(J)=L(K) THEN 170 */
564 for (j = 0; j < LOCS; j++)
565 for (k = 0; k < LOCS; k++)
568 else if (loc[j] == loc[k])
571 /* 225 REM *** SET NO. OF ARROWS *** */
576 scratchloc = loc[YOU];
578 /* 240 REM *** RUN THE GAME *** */
579 /* 245 PRINT "HUNT THE WUMPUS" */
580 (void) puts("HUNT THE WUMPUS");
583 (void) printf("Wumpus is at %d, pits at %d & %d, bats at %d & %d\n",
585 loc[PIT1]+1, loc[PIT2]+1,
586 loc[BATS1]+1, loc[BATS2]+1);
590 /* 250 REM *** HAZARD WARNING AND LOCATION *** */
594 /* 260 REM *** MOVE OR SHOOT *** */
596 /* 270 ON O GOTO 280,300 */
599 /* 275 REM *** SHOOT *** */
603 /* 285 IF F=0 THEN 255 */
611 /* 295 REM *** MOVE *** */
615 /* 305 IF F=0 THEN 255 */
620 /* 310 IF F>0 THEN 335 */
621 if (finished == LOSE)
623 /* 315 REM *** LOSE *** */
624 /* 320 PRINT "HA HA HA - YOU LOSE!" */
626 (void) puts("HA HA HA - YOU LOSE!");
630 /* 330 REM *** WIN *** */
631 /* 335 PRINT "HEE HEE HEE - THE WUMPUS'LL GET YOU NEXT TIME!!" */
632 (void) puts("HEE HEE HEE - THE WUMPUS'LL GET YOU NEXT TIME!!");
635 /* 340 FOR J=1 TO 6 */
638 for (j = YOU; j < LOCS; j++)
641 /* 355 PRINT "SAME SETUP (Y-N)"; */
643 c = getlet("SAME SETUP (Y-N)");
645 /* 365 IF I$<>"Y"THEN 170 */
653 /* wumpus.c ends here */