Commit | Line | Data |
---|---|---|
e0bbfbf9 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
69fb7db6 KB |
3 | * All rights reserved. |
4 | * | |
af359dea C |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
e0bbfbf9 DF |
32 | */ |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
69fb7db6 | 38 | #endif /* not lint */ |
e0bbfbf9 DF |
39 | |
40 | #ifndef lint | |
1c15e888 | 41 | static char sccsid[] = "@(#)main.c 5.6 (Berkeley) 6/1/90"; |
69fb7db6 | 42 | #endif /* not lint */ |
185c0383 RH |
43 | |
44 | #include <stdio.h> | |
45 | #include "back.h" | |
46 | ||
47 | #define MVPAUSE 5 /* time to sleep when stuck */ | |
48 | #define MAXUSERS 35 /* maximum number of users */ | |
49 | ||
50 | char *instr[]; /* text of instructions */ | |
51 | char *message[]; /* update message */ | |
52 | char ospeed; /* tty output speed */ | |
53 | ||
54 | char *helpm[] = { /* help message */ | |
55 | "Enter a space or newline to roll, or", | |
56 | " R to reprint the board\tD to double", | |
57 | " S to save the game\tQ to quit", | |
58 | 0 | |
59 | }; | |
60 | ||
61 | char *contin[] = { /* pause message */ | |
62 | "(Type a newline to continue.)", | |
63 | "", | |
64 | 0 | |
65 | }; | |
66 | ||
67 | static char user1a[] = | |
68 | "Sorry, you cannot play backgammon when there are more than "; | |
69 | static char user1b[] = | |
70 | " users\non the system."; | |
71 | static char user2a[] = | |
72 | "\nThere are now more than "; | |
73 | static char user2b[] = | |
74 | " users on the system, so you cannot play\nanother game. "; | |
75 | static char rules[] = "\nDo you want the rules of the game?"; | |
76 | static char noteach[] = "Teachgammon not available!\n\007"; | |
77 | static char need[] = "Do you need instructions for this program?"; | |
78 | static char askcol[] = | |
79 | "Enter 'r' to play red, 'w' to play white, 'b' to play both:"; | |
80 | static char rollr[] = "Red rolls a "; | |
81 | static char rollw[] = ". White rolls a "; | |
82 | static char rstart[] = ". Red starts.\n"; | |
83 | static char wstart[] = ". White starts.\n"; | |
84 | static char toobad1[] = "Too bad, "; | |
85 | static char unable[] = " is unable to use that roll.\n"; | |
86 | static char toobad2[] = ". Too bad, "; | |
87 | static char cantmv[] = " can't move.\n"; | |
88 | static char bgammon[] = "Backgammon! "; | |
89 | static char gammon[] = "Gammon! "; | |
90 | static char again[] = ".\nWould you like to play again?"; | |
91 | static char svpromt[] = "Would you like to save this game?"; | |
92 | ||
93 | static char password[] = "losfurng"; | |
94 | static char pbuf[10]; | |
95 | ||
96 | main (argc,argv) | |
97 | int argc; | |
98 | char **argv; | |
99 | ||
100 | { | |
101 | register int i; /* non-descript index */ | |
102 | register int l; /* non-descript index */ | |
103 | register char c; /* non-descript character storage */ | |
4ca98259 | 104 | long t; /* time for random num generator */ |
185c0383 RH |
105 | |
106 | /* initialization */ | |
107 | bflag = 2; /* default no board */ | |
108 | signal (2,getout); /* trap interrupts */ | |
109 | if (gtty (0,&tty) == -1) /* get old tty mode */ | |
110 | errexit ("backgammon(gtty)"); | |
111 | old = tty.sg_flags; | |
112 | #ifdef V7 | |
113 | raw = ((noech = old & ~ECHO) | CBREAK); /* set up modes */ | |
114 | #else | |
115 | raw = ((noech = old & ~ECHO) | RAW); /* set up modes */ | |
116 | #endif | |
88d2c0bf | 117 | ospeed = tty.sg_ospeed; /* for termlib */ |
185c0383 RH |
118 | |
119 | /* check user count */ | |
120 | # ifdef CORY | |
121 | if (ucount() > MAXUSERS) { | |
122 | writel (user1a); | |
123 | wrint (MAXUSERS); | |
124 | writel (user1b); | |
125 | getout(); | |
126 | } | |
127 | # endif | |
128 | ||
129 | /* get terminal | |
130 | * capabilities, and | |
131 | * decide if it can | |
132 | * cursor address */ | |
133 | tflag = getcaps (getenv ("TERM")); | |
134 | /* use whole screen | |
135 | * for text */ | |
136 | if (tflag) | |
137 | begscr = 0; | |
4ca98259 KM |
138 | t = time(0); |
139 | srandom(t); /* 'random' seed */ | |
185c0383 RH |
140 | |
141 | #ifdef V7 | |
142 | while (*++argv != 0) /* process arguments */ | |
143 | #else | |
144 | while (*++argv != -1) /* process arguments */ | |
145 | #endif | |
146 | getarg (&argv); | |
147 | args[acnt] = '\0'; | |
148 | if (tflag) { /* clear screen */ | |
149 | noech &= ~(CRMOD|XTABS); | |
150 | raw &= ~(CRMOD|XTABS); | |
151 | clear(); | |
152 | } | |
153 | fixtty (raw); /* go into raw mode */ | |
154 | ||
155 | /* check if restored | |
156 | * game and save flag | |
157 | * for later */ | |
158 | if (rfl = rflag) { | |
159 | text (message); /* print message */ | |
160 | text (contin); | |
161 | wrboard(); /* print board */ | |
162 | /* if new game, pretend | |
163 | * to be a non-restored | |
164 | * game */ | |
165 | if (cturn == 0) | |
166 | rflag = 0; | |
167 | } else { | |
168 | rscore = wscore = 0; /* zero score */ | |
169 | text (message); /* update message | |
170 | * without pausing */ | |
171 | ||
172 | if (aflag) { /* print rules */ | |
173 | writel (rules); | |
174 | if (yorn(0)) { | |
175 | ||
176 | fixtty (old); /* restore tty */ | |
580e1f64 | 177 | execl (TEACH,"teachgammon",args,0); |
185c0383 RH |
178 | |
179 | tflag = 0; /* error! */ | |
180 | writel (noteach); | |
181 | exit(); | |
182 | } else { /* if not rules, then | |
183 | * instructions */ | |
184 | writel (need); | |
185 | if (yorn(0)) { /* print instructions */ | |
186 | clear(); | |
187 | text (instr); | |
188 | } | |
189 | } | |
190 | } | |
191 | ||
192 | init(); /* initialize board */ | |
193 | ||
194 | if (pnum == 2) { /* ask for color(s) */ | |
195 | writec ('\n'); | |
196 | writel (askcol); | |
197 | while (pnum == 2) { | |
198 | c = readc(); | |
199 | switch (c) { | |
200 | ||
201 | case 'R': /* red */ | |
202 | pnum = -1; | |
203 | break; | |
204 | ||
205 | case 'W': /* white */ | |
206 | pnum = 1; | |
207 | break; | |
208 | ||
209 | case 'B': /* both */ | |
210 | pnum = 0; | |
211 | break; | |
212 | ||
213 | case 'P': | |
214 | if (iroll) | |
215 | break; | |
216 | if (tflag) | |
217 | curmove (curr,0); | |
218 | else | |
219 | writec ('\n'); | |
220 | writel ("Password:"); | |
221 | signal (14,getout); | |
222 | cflag = 1; | |
223 | alarm (10); | |
224 | for (i = 0; i < 10; i++) { | |
225 | pbuf[i] = readc(); | |
226 | if (pbuf[i] == '\n') | |
227 | break; | |
228 | } | |
229 | if (i == 10) | |
230 | while (readc() != '\n'); | |
231 | alarm (0); | |
232 | cflag = 0; | |
233 | if (i < 10) | |
234 | pbuf[i] = '\0'; | |
235 | for (i = 0; i < 9; i++) | |
236 | if (pbuf[i] != password[i]) | |
237 | getout(); | |
238 | iroll = 1; | |
239 | if (tflag) | |
240 | curmove (curr,0); | |
241 | else | |
242 | writec ('\n'); | |
243 | writel (askcol); | |
244 | break; | |
245 | ||
246 | default: /* error */ | |
247 | writec ('\007'); | |
248 | } | |
249 | } | |
250 | } else if (!aflag) | |
251 | /* pause to read | |
252 | * message */ | |
253 | text (contin); | |
254 | ||
255 | wrboard(); /* print board */ | |
256 | ||
257 | if (tflag) | |
258 | curmove (18,0); | |
259 | else | |
260 | writec ('\n'); | |
261 | } | |
262 | /* limit text to bottom | |
263 | * of screen */ | |
264 | if (tflag) | |
265 | begscr = 17; | |
266 | ||
267 | for (;;) { /* begin game! */ | |
268 | /* initial roll if | |
269 | * needed */ | |
270 | if ((! rflag) || raflag) | |
271 | roll(); | |
272 | ||
273 | /* perform ritual of | |
274 | * first roll */ | |
275 | if (! rflag) { | |
276 | if (tflag) | |
277 | curmove (17,0); | |
278 | while (D0 == D1) /* no doubles */ | |
279 | roll(); | |
280 | ||
281 | /* print rolls */ | |
282 | writel (rollr); | |
283 | writec (D0+'0'); | |
284 | writel (rollw); | |
285 | writec (D1+'0'); | |
286 | ||
287 | /* winner goes first */ | |
288 | if (D0 > D1) { | |
289 | writel (rstart); | |
290 | cturn = 1; | |
291 | } else { | |
292 | writel (wstart); | |
293 | cturn = -1; | |
294 | } | |
295 | } | |
296 | ||
297 | /* initalize variables | |
298 | * according to whose | |
299 | * turn it is */ | |
300 | ||
301 | if (cturn == 1) { /* red */ | |
302 | home = 25; | |
303 | bar = 0; | |
304 | inptr = &in[1]; | |
305 | inopp = &in[0]; | |
306 | offptr = &off[1]; | |
307 | offopp = &off[0]; | |
308 | Colorptr = &color[1]; | |
309 | colorptr = &color[3]; | |
310 | colen = 3; | |
311 | } else { /* white */ | |
312 | home = 0; | |
313 | bar = 25; | |
314 | inptr = &in[0]; | |
315 | inopp = &in[1]; | |
316 | offptr = &off[0]; | |
317 | offopp = &off[1]; | |
318 | Colorptr = &color[0]; | |
319 | colorptr = &color[2]; | |
320 | colen = 5; | |
321 | } | |
322 | ||
323 | /* do first move | |
324 | * (special case) */ | |
325 | if (! (rflag && raflag)) { | |
326 | if (cturn == pnum) /* computer's move */ | |
327 | move (0); | |
328 | else { /* player's move */ | |
329 | mvlim = movallow(); | |
330 | /* reprint roll */ | |
331 | if (tflag) | |
332 | curmove (cturn == -1? 18: 19,0); | |
333 | proll(); | |
334 | getmove(); /* get player's move */ | |
335 | } | |
336 | } | |
337 | if (tflag) { | |
338 | curmove (17,0); | |
339 | cline(); | |
340 | begscr = 18; | |
341 | } | |
342 | ||
343 | /* no longer any diff- | |
344 | * erence between normal | |
345 | * game and recovered | |
346 | * game. */ | |
347 | rflag = 0; | |
348 | ||
349 | /* move as long as it's | |
350 | * someone's turn */ | |
351 | while (cturn == 1 || cturn == -1) { | |
352 | ||
353 | /* board maintainence */ | |
354 | if (tflag) | |
355 | refresh(); /* fix board */ | |
356 | else | |
357 | /* redo board if -p */ | |
358 | if (cturn == bflag || bflag == 0) | |
359 | wrboard(); | |
360 | ||
361 | /* do computer's move */ | |
362 | if (cturn == pnum) { | |
363 | move (1); | |
364 | ||
365 | /* see if double | |
366 | * refused */ | |
367 | if (cturn == -2 || cturn == 2) | |
368 | break; | |
369 | ||
370 | /* check for winning | |
371 | * move */ | |
372 | if (*offopp == 15) { | |
373 | cturn *= -2; | |
374 | break; | |
375 | } | |
376 | continue; | |
377 | ||
378 | } | |
379 | ||
380 | /* (player's move) */ | |
381 | ||
382 | /* clean screen if | |
383 | * safe */ | |
384 | if (tflag && hflag) { | |
385 | curmove (20,0); | |
386 | clend (); | |
387 | hflag = 1; | |
388 | } | |
389 | ||
390 | /* if allowed, give him | |
391 | * a chance to double */ | |
392 | if (dlast != cturn && gvalue < 64) { | |
393 | if (tflag) | |
394 | curmove (cturn == -1? 18: 19,0); | |
395 | writel (*Colorptr); | |
396 | c = readc(); | |
397 | ||
398 | /* character cases */ | |
399 | switch (c) { | |
400 | ||
401 | /* reprint board */ | |
402 | case 'R': | |
403 | wrboard(); | |
404 | break; | |
405 | ||
406 | /* save game */ | |
407 | case 'S': | |
408 | raflag = 1; | |
409 | save (1); | |
410 | break; | |
411 | ||
412 | /* quit */ | |
413 | case 'Q': | |
414 | quit(); | |
415 | break; | |
416 | ||
417 | /* double */ | |
418 | case 'D': | |
419 | dble(); | |
420 | break; | |
421 | ||
422 | /* roll */ | |
423 | case ' ': | |
424 | case '\n': | |
425 | roll(); | |
426 | writel (" rolls "); | |
427 | writec (D0+'0'); | |
428 | writec (' '); | |
429 | writec (D1+'0'); | |
430 | writel (". "); | |
431 | ||
432 | /* see if he can move */ | |
433 | if ( (mvlim = movallow()) == 0) { | |
434 | ||
435 | /* can't move */ | |
436 | writel (toobad1); | |
437 | writel (*colorptr); | |
438 | writel (unable); | |
439 | if (tflag) { | |
440 | if (pnum) { | |
441 | buflush(); | |
442 | sleep (MVPAUSE); | |
443 | } | |
444 | } | |
445 | nexturn(); | |
446 | break; | |
447 | } | |
448 | ||
449 | /* get move */ | |
450 | getmove(); | |
451 | ||
452 | /* okay to clean | |
453 | * screen */ | |
454 | hflag = 1; | |
455 | break; | |
456 | ||
457 | /* invalid character */ | |
458 | default: | |
459 | ||
460 | /* print help message */ | |
461 | if (tflag) | |
462 | curmove (20,0); | |
463 | else | |
464 | writec ('\n'); | |
465 | text (helpm); | |
466 | if (tflag) | |
467 | curmove (cturn == -1? 18: 19,0); | |
468 | else | |
469 | writec ('\n'); | |
470 | ||
471 | /* don't erase */ | |
472 | hflag = 0; | |
473 | } | |
474 | } else { /* couldn't double */ | |
475 | ||
476 | /* print roll */ | |
477 | roll(); | |
478 | if (tflag) | |
479 | curmove (cturn == -1? 18: 19,0); | |
480 | proll (); | |
481 | ||
482 | /* can he move? */ | |
483 | if ((mvlim = movallow()) == 0) { | |
484 | ||
485 | /* he can't */ | |
486 | writel (toobad2); | |
487 | writel (*colorptr); | |
488 | writel (cantmv); | |
489 | buflush(); | |
490 | sleep (MVPAUSE); | |
491 | nexturn(); | |
492 | continue; | |
493 | } | |
494 | ||
495 | /* get move */ | |
496 | getmove(); | |
497 | } | |
498 | } | |
499 | ||
500 | /* don't worry about who | |
501 | * won if quit */ | |
502 | if (cturn == 0) | |
503 | break; | |
504 | ||
505 | /* fix cturn = winner */ | |
506 | cturn /= -2; | |
507 | ||
508 | /* final board pos. */ | |
509 | if (tflag) | |
510 | refresh(); | |
511 | ||
512 | /* backgammon? */ | |
513 | mflag = 0; | |
514 | l = bar+7*cturn; | |
515 | for (i = bar; i != l; i += cturn) | |
516 | if (board[i]*cturn) mflag++; | |
517 | ||
518 | /* compute game value */ | |
519 | if (tflag) | |
520 | curmove (20,0); | |
521 | if (*offopp == 15) { | |
522 | if (mflag) { | |
523 | writel (bgammon); | |
524 | gvalue *= 3; | |
525 | } | |
526 | else if (*offptr <= 0) { | |
527 | writel (gammon); | |
528 | gvalue *= 2; | |
529 | } | |
530 | } | |
531 | ||
532 | /* report situation */ | |
533 | if (cturn == -1) { | |
534 | writel ("Red wins "); | |
535 | rscore += gvalue; | |
536 | } else { | |
537 | writel ("White wins "); | |
538 | wscore += gvalue; | |
539 | } | |
540 | wrint (gvalue); | |
541 | writel (" point"); | |
542 | if (gvalue > 1) | |
543 | writec ('s'); | |
544 | writel (".\n"); | |
545 | ||
546 | /* write score */ | |
547 | wrscore(); | |
548 | ||
549 | /* check user count */ | |
550 | # ifdef CORY | |
551 | if (ucount() > MAXUSERS) { | |
552 | writel (user2a); | |
553 | wrint (MAXUSERS); | |
554 | writel (user2b); | |
555 | rfl = 1; | |
556 | break; | |
557 | } | |
558 | # endif | |
559 | ||
560 | /* see if he wants | |
561 | * another game */ | |
562 | writel (again); | |
563 | if ((i = yorn ('S')) == 0) | |
564 | break; | |
565 | ||
566 | init(); | |
567 | if (i == 2) { | |
568 | writel (" Save.\n"); | |
569 | cturn = 0; | |
570 | save (0); | |
571 | } | |
572 | ||
573 | /* yes, reset game */ | |
574 | wrboard(); | |
575 | } | |
576 | ||
577 | /* give him a chance to save if game was recovered */ | |
578 | if (rfl && cturn) { | |
579 | writel (svpromt); | |
580 | if (yorn (0)) { | |
581 | /* re-initialize for | |
582 | * recovery */ | |
583 | init(); | |
584 | cturn = 0; | |
585 | save(0); | |
586 | } | |
587 | } | |
588 | ||
589 | /* leave peacefully */ | |
590 | getout (); | |
591 | } |