xref: /original-bsd/games/cribbage/crib.c (revision fbb2a877)
1 /*
2  * Copyright (c) 1980 Regents of the University of California.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms are permitted
6  * provided that the above copyright notice and this paragraph are
7  * duplicated in all such forms and that any documentation,
8  * advertising materials, and other materials related to such
9  * distribution and use acknowledge that the software was developed
10  * by the University of California, Berkeley.  The name of the
11  * University may not be used to endorse or promote products derived
12  * from this software without specific prior written permission.
13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16  */
17 
18 #ifndef lint
19 char copyright[] =
20 "@(#) Copyright (c) 1980 Regents of the University of California.\n\
21  All rights reserved.\n";
22 #endif /* not lint */
23 
24 #ifndef lint
25 static char sccsid[] = "@(#)crib.c	5.3 (Berkeley) 06/18/88";
26 #endif /* not lint */
27 
28 # include	<curses.h>
29 # include	<signal.h>
30 # include	"deck.h"
31 # include	"cribbage.h"
32 # include	"cribcur.h"
33 
34 
35 # define	LOGFILE		"/usr/games/lib/criblog"
36 # define	INSTRCMD	"ul /usr/games/lib/crib.instr | more -f"
37 
38 
39 main(argc, argv)
40 int	argc;
41 char	*argv[];
42 {
43 	register  char		*p;
44 	BOOLEAN			playing;
45 	char			*s;		/* for reading arguments */
46 	char			bust;		/* flag for arg reader */
47 	FILE			*f;
48 	FILE			*fopen();
49 	char			*getline();
50 	int			bye();
51 
52 	while (--argc > 0) {
53 	    if ((*++argv)[0] != '-') {
54 		fprintf(stderr, "\n\ncribbage: usage is 'cribbage [-eqr]'\n");
55 		exit(1);
56 	    }
57 	    bust = FALSE;
58 	    for (s = argv[0] + 1; *s != NULL; s++) {
59 		switch (*s) {
60 		    case 'e':
61 			explain = TRUE;
62 			break;
63 		    case 'q':
64 			quiet = TRUE;
65 			break;
66 		    case 'r':
67 			rflag = TRUE;
68 			break;
69 		    default:
70 			fprintf(stderr, "\n\ncribbage: usage is 'cribbage [-eqr]'\n");
71 			exit(2);
72 			break;
73 		}
74 		if (bust)
75 		    break;
76 	    }
77 	}
78 
79 	initscr();
80 	signal(SIGINT, bye);
81 	crmode();
82 	noecho();
83 	Playwin = subwin(stdscr, PLAY_Y, PLAY_X, 0, 0);
84 	Tablewin = subwin(stdscr, TABLE_Y, TABLE_X, 0, PLAY_X);
85 	Compwin = subwin(stdscr, COMP_Y, COMP_X, 0, TABLE_X + PLAY_X);
86 	Msgwin = subwin(stdscr, MSG_Y, MSG_X, Y_MSG_START, SCORE_X + 1);
87 	leaveok(Playwin, TRUE);
88 	leaveok(Tablewin, TRUE);
89 	leaveok(Compwin, TRUE);
90 	clearok(stdscr, FALSE);
91 
92 	if (!quiet) {
93 	    msg("Do you need instructions for cribbage? ");
94 	    if (getuchar() == 'Y') {
95 		endwin();
96 		fflush(stdout);
97 		system(INSTRCMD);
98 		crmode();
99 		noecho();
100 		clear();
101 		refresh();
102 		msg("For the rules of this program, do \"man cribbage\"");
103 	    }
104 	}
105 	playing = TRUE;
106 	do {
107 	    wclrtobot(Msgwin);
108 	    msg(quiet ? "L or S? " : "Long (to 121) or Short (to 61)? ");
109 	    if (glimit == SGAME)
110 		glimit = (getuchar() == 'L' ? LGAME : SGAME);
111 	    else
112 		glimit = (getuchar() == 'S' ? SGAME : LGAME);
113 	    game();
114 	    msg("Another game? ");
115 	    playing = (getuchar() == 'Y');
116 	} while (playing);
117 
118 	if ((f = fopen(LOGFILE, "a")) != NULL) {
119 	    fprintf(f, "Won %5.5d, Lost %5.5d\n",  cgames, pgames);
120 	    fclose(f);
121 	}
122 
123 	bye();
124 }
125 
126 /*
127  * makeboard:
128  *	Print out the initial board on the screen
129  */
130 makeboard()
131 {
132     mvaddstr(SCORE_Y + 0, SCORE_X, "+---------------------------------------+");
133     mvaddstr(SCORE_Y + 1, SCORE_X, "|  Score:   0     YOU                   |");
134     mvaddstr(SCORE_Y + 2, SCORE_X, "| *.....:.....:.....:.....:.....:.....  |");
135     mvaddstr(SCORE_Y + 3, SCORE_X, "| *.....:.....:.....:.....:.....:.....  |");
136     mvaddstr(SCORE_Y + 4, SCORE_X, "|                                       |");
137     mvaddstr(SCORE_Y + 5, SCORE_X, "| *.....:.....:.....:.....:.....:.....  |");
138     mvaddstr(SCORE_Y + 6, SCORE_X, "| *.....:.....:.....:.....:.....:.....  |");
139     mvaddstr(SCORE_Y + 7, SCORE_X, "|  Score:   0      ME                   |");
140     mvaddstr(SCORE_Y + 8, SCORE_X, "+---------------------------------------+");
141     gamescore();
142 }
143 
144 /*
145  * gamescore:
146  *	Print out the current game score
147  */
148 gamescore()
149 {
150     extern int	Lastscore[];
151 
152     if (pgames || cgames) {
153 	    mvprintw(SCORE_Y + 1, SCORE_X + 28, "Games: %3d", pgames);
154 	    mvprintw(SCORE_Y + 7, SCORE_X + 28, "Games: %3d", cgames);
155     }
156     Lastscore[0] = -1;
157     Lastscore[1] = -1;
158 }
159 
160 /*
161  * game:
162  *	Play one game up to glimit points.  Actually, we only ASK the
163  *	player what card to turn.  We do a random one, anyway.
164  */
165 game()
166 {
167 	register int		i, j;
168 	BOOLEAN			flag;
169 	BOOLEAN			compcrib;
170 
171 	makeboard();
172 	refresh();
173 	makedeck(deck);
174 	shuffle(deck);
175 	if (gamecount == 0) {
176 	    flag = TRUE;
177 	    do {
178 		if (!rflag) {				/* player cuts deck */
179 		    msg(quiet ? "Cut for crib? " :
180 			"Cut to see whose crib it is -- low card wins? ");
181 		    getline();
182 		}
183 		i = (rand() >> 4) % CARDS;		/* random cut */
184 		do {					/* comp cuts deck */
185 		    j = (rand() >> 4) % CARDS;
186 		} while (j == i);
187 		addmsg(quiet ? "You cut " : "You cut the ");
188 		msgcard(deck[i], FALSE);
189 		endmsg();
190 		addmsg(quiet ? "I cut " : "I cut the ");
191 		msgcard(deck[j], FALSE);
192 		endmsg();
193 		flag = (deck[i].rank == deck[j].rank);
194 		if (flag) {
195 		    msg(quiet ? "We tied..." :
196 			"We tied and have to try again...");
197 		    shuffle(deck);
198 		    continue;
199 		}
200 		else
201 		    compcrib = (deck[i].rank > deck[j].rank);
202 	    } while (flag);
203 	}
204 	else {
205 	    werase(Tablewin);
206 	    wrefresh(Tablewin);
207 	    werase(Compwin);
208 	    wrefresh(Compwin);
209 	    msg("Loser (%s) gets first crib",  (iwon ? "you" : "me"));
210 	    compcrib = !iwon;
211 	}
212 
213 	pscore = cscore = 0;
214 	flag = TRUE;
215 	do {
216 	    shuffle(deck);
217 	    flag = !playhand(compcrib);
218 	    compcrib = !compcrib;
219 	} while (flag);
220 	++gamecount;
221 	if (cscore < pscore) {
222 	    if (glimit - cscore > 60) {
223 		msg("YOU DOUBLE SKUNKED ME!");
224 		pgames += 4;
225 	    }
226 	    else if (glimit - cscore > 30) {
227 		msg("YOU SKUNKED ME!");
228 		pgames += 2;
229 	    }
230 	    else {
231 		msg("YOU WON!");
232 		++pgames;
233 	    }
234 	    iwon = FALSE;
235 	}
236 	else {
237 	    if (glimit - pscore > 60) {
238 		msg("I DOUBLE SKUNKED YOU!");
239 		cgames += 4;
240 	    }
241 	    else if (glimit - pscore > 30) {
242 		msg("I SKUNKED YOU!");
243 		cgames += 2;
244 	    }
245 	    else {
246 		msg("I WON!");
247 		++cgames;
248 	    }
249 	    iwon = TRUE;
250 	}
251 	gamescore();
252 }
253 
254 /*
255  * playhand:
256  *	Do up one hand of the game
257  */
258 playhand(mycrib)
259 BOOLEAN		mycrib;
260 {
261 	register int		deckpos;
262 	extern char		Msgbuf[];
263 
264 	werase(Compwin);
265 
266 	knownum = 0;
267 	deckpos = deal(mycrib);
268 	sorthand(chand, FULLHAND);
269 	sorthand(phand, FULLHAND);
270 	makeknown(chand, FULLHAND);
271 	prhand(phand, FULLHAND, Playwin, FALSE);
272 	discard(mycrib);
273 	if (cut(mycrib, deckpos))
274 	    return TRUE;
275 	if (peg(mycrib))
276 	    return TRUE;
277 	werase(Tablewin);
278 	wrefresh(Tablewin);
279 	if (score(mycrib))
280 	    return TRUE;
281 	return FALSE;
282 }
283 
284 
285 
286 /*
287  * deal cards to both players from deck
288  */
289 
290 deal( mycrib )
291 {
292 	register  int		i, j;
293 
294 	j = 0;
295 	for( i = 0; i < FULLHAND; i++ )  {
296 	    if( mycrib )  {
297 		phand[i] = deck[j++];
298 		chand[i] = deck[j++];
299 	    }
300 	    else  {
301 		chand[i] = deck[j++];
302 		phand[i] = deck[j++];
303 	    }
304 	}
305 	return( j );
306 }
307 
308 /*
309  * discard:
310  *	Handle players discarding into the crib...
311  * Note: we call cdiscard() after prining first message so player doesn't wait
312  */
313 discard(mycrib)
314 BOOLEAN		mycrib;
315 {
316 	register char	*prompt;
317 	CARD		crd;
318 
319 	prcrib(mycrib, TRUE);
320 	prompt = (quiet ? "Discard --> " : "Discard a card --> ");
321 	cdiscard(mycrib);			/* puts best discard at end */
322 	crd = phand[infrom(phand, FULLHAND, prompt)];
323 	remove(crd, phand, FULLHAND);
324 	prhand(phand, FULLHAND, Playwin, FALSE);
325 	crib[0] = crd;
326 /* next four lines same as last four except for cdiscard() */
327 	crd = phand[infrom(phand, FULLHAND - 1, prompt)];
328 	remove(crd, phand, FULLHAND - 1);
329 	prhand(phand, FULLHAND, Playwin, FALSE);
330 	crib[1] = crd;
331 	crib[2] = chand[4];
332 	crib[3] = chand[5];
333 	chand[4].rank = chand[4].suit = chand[5].rank = chand[5].suit = EMPTY;
334 }
335 
336 /*
337  * cut:
338  *	Cut the deck and set turnover.  Actually, we only ASK the
339  *	player what card to turn.  We do a random one, anyway.
340  */
341 cut(mycrib, pos)
342 BOOLEAN		mycrib;
343 int		pos;
344 {
345 	register int		i, cardx;
346 	BOOLEAN			win = FALSE;
347 
348 	if (mycrib) {
349 	    if (!rflag) {			/* random cut */
350 		msg(quiet ? "Cut the deck? " :
351 			"How many cards down do you wish to cut the deck? ");
352 		getline();
353 	    }
354 	    i = (rand() >> 4) % (CARDS - pos);
355 	    turnover = deck[i + pos];
356 	    addmsg(quiet ? "You cut " : "You cut the ");
357 	    msgcard(turnover, FALSE);
358 	    endmsg();
359 	    if (turnover.rank == JACK) {
360 		msg("I get two for his heels");
361 		win = chkscr(&cscore,2 );
362 	    }
363 	}
364 	else {
365 	    i = (rand() >> 4) % (CARDS - pos) + pos;
366 	    turnover = deck[i];
367 	    addmsg(quiet ? "I cut " : "I cut the ");
368 	    msgcard(turnover, FALSE);
369 	    endmsg();
370 	    if (turnover.rank == JACK) {
371 		msg("You get two for his heels");
372 		win = chkscr(&pscore, 2);
373 	    }
374 	}
375 	makeknown(&turnover, 1);
376 	prcrib(mycrib, FALSE);
377 	return win;
378 }
379 
380 /*
381  * prcrib:
382  *	Print out the turnover card with crib indicator
383  */
384 prcrib(mycrib, blank)
385 BOOLEAN		mycrib, blank;
386 {
387 	register int	y, cardx;
388 
389 	if (mycrib)
390 	    cardx = CRIB_X;
391 	else
392 	    cardx = 0;
393 
394 	mvaddstr(CRIB_Y, cardx + 1, "CRIB");
395 	prcard(stdscr, CRIB_Y + 1, cardx, turnover, blank);
396 
397 	if (mycrib)
398 	    cardx = 0;
399 	else
400 	    cardx = CRIB_X;
401 
402 	for (y = CRIB_Y; y <= CRIB_Y + 5; y++)
403 	    mvaddstr(y, cardx, "       ");
404 }
405 
406 /*
407  * peg:
408  *	Handle all the pegging...
409  */
410 
411 static CARD		Table[14];
412 
413 static int		Tcnt;
414 
415 peg(mycrib)
416 BOOLEAN		mycrib;
417 {
418 	static CARD		ch[CINHAND], ph[CINHAND];
419 	CARD			crd;
420 	register int		i, j, k;
421 	register int		l;
422 	register int		cnum, pnum, sum;
423 	register BOOLEAN	myturn, mego, ugo, last, played;
424 
425 	cnum = pnum = CINHAND;
426 	for (i = 0; i < CINHAND; i++) {		/* make copies of hands */
427 	    ch[i] = chand[i];
428 	    ph[i] = phand[i];
429 	}
430 	Tcnt = 0;			/* index to table of cards played */
431 	sum = 0;			/* sum of cards played */
432 	mego = ugo = FALSE;
433 	myturn = !mycrib;
434 	for (;;) {
435 	    last = TRUE;				/* enable last flag */
436 	    prhand(ph, pnum, Playwin, FALSE);
437 	    prhand(ch, cnum, Compwin, TRUE);
438 	    prtable(sum);
439 	    if (myturn) {				/* my tyrn to play */
440 		if (!anymove(ch, cnum, sum)) {		/* if no card to play */
441 		    if (!mego && cnum) {		/* go for comp? */
442 			msg("GO");
443 			mego = TRUE;
444 		    }
445 		    if (anymove(ph, pnum, sum))		/* can player move? */
446 			myturn = !myturn;
447 		    else {				/* give him his point */
448 			msg(quiet ? "You get one" : "You get one point");
449 			if (chkscr(&pscore, 1))
450 			    return TRUE;
451 			sum = 0;
452 			mego = ugo = FALSE;
453 			Tcnt = 0;
454 		    }
455 		}
456 		else {
457 		    played = TRUE;
458 		    j = -1;
459 		    k = 0;
460 		    for (i = 0; i < cnum; i++) {	/* maximize score */
461 			l = pegscore(ch[i], Table, Tcnt, sum);
462 			if (l > k) {
463 			    k = l;
464 			    j = i;
465 			}
466 		    }
467 		    if (j < 0)				/* if nothing scores */
468 			j = cchose(ch, cnum, sum);
469 		    crd = ch[j];
470 		    remove(crd, ch, cnum--);
471 		    sum += VAL(crd.rank);
472 		    Table[Tcnt++] = crd;
473 		    if (k > 0) {
474 			addmsg(quiet ? "I get %d playing " :
475 			    "I get %d points playing ", k);
476 			msgcard(crd, FALSE);
477 			endmsg();
478 			if (chkscr(&cscore, k))
479 			    return TRUE;
480 		    }
481 		    myturn = !myturn;
482 		}
483 	    }
484 	    else {
485 		if (!anymove(ph, pnum, sum)) {		/* can player move? */
486 		    if (!ugo && pnum) {			/* go for player */
487 			msg("You have a GO");
488 			ugo = TRUE;
489 		    }
490 		    if (anymove(ch, cnum, sum))		/* can computer play? */
491 			myturn = !myturn;
492 		    else {
493 			msg(quiet ? "I get one" : "I get one point");
494 			do_wait();
495 			if (chkscr(&cscore, 1))
496 			    return TRUE;
497 			sum = 0;
498 			mego = ugo = FALSE;
499 			Tcnt = 0;
500 		    }
501 		}
502 		else {					/* player plays */
503 		    played = FALSE;
504 		    if (pnum == 1) {
505 			crd = ph[0];
506 			msg("You play your last card");
507 		    }
508 		    else
509 			for (;;) {
510 			    prhand(ph, pnum, Playwin, FALSE);
511 			    crd = ph[infrom(ph, pnum, "Your play: ")];
512 			    if (sum + VAL(crd.rank) <= 31)
513 				break;
514 			    else
515 				msg("Total > 31 -- try again");
516 			}
517 		    makeknown(&crd, 1);
518 		    remove(crd, ph, pnum--);
519 		    i = pegscore(crd, Table, Tcnt, sum);
520 		    sum += VAL(crd.rank);
521 		    Table[Tcnt++] = crd;
522 		    if (i > 0) {
523 			msg(quiet ? "You got %d" : "You got %d points", i);
524 			if (chkscr(&pscore, i))
525 			    return TRUE;
526 		    }
527 		    myturn = !myturn;
528 		}
529 	    }
530 	    if (sum >= 31) {
531 		if (!myturn)
532 		    do_wait();
533 		sum = 0;
534 		mego = ugo = FALSE;
535 		Tcnt = 0;
536 		last = FALSE;				/* disable last flag */
537 	    }
538 	    if (!pnum && !cnum)
539 		break;					/* both done */
540 	}
541 	prhand(ph, pnum, Playwin, FALSE);
542 	prhand(ch, cnum, Compwin, TRUE);
543 	prtable(sum);
544 	if (last)
545 	    if (played) {
546 		msg(quiet ? "I get one for last" : "I get one point for last");
547 		do_wait();
548 		if (chkscr(&cscore, 1))
549 		    return TRUE;
550 	    }
551 	    else {
552 		msg(quiet ? "You get one for last" :
553 			    "You get one point for last");
554 		if (chkscr(&pscore, 1))
555 		    return TRUE;
556 	    }
557 	return FALSE;
558 }
559 
560 /*
561  * prtable:
562  *	Print out the table with the current score
563  */
564 prtable(score)
565 int	score;
566 {
567 	prhand(Table, Tcnt, Tablewin, FALSE);
568 	mvwprintw(Tablewin, (Tcnt + 2) * 2, Tcnt + 1, "%2d", score);
569 	wrefresh(Tablewin);
570 }
571 
572 /*
573  * score:
574  *	Handle the scoring of the hands
575  */
576 score(mycrib)
577 BOOLEAN		mycrib;
578 {
579 	sorthand(crib, CINHAND);
580 	if (mycrib) {
581 	    if (plyrhand(phand, "hand"))
582 		return TRUE;
583 	    if (comphand(chand, "hand"))
584 		return TRUE;
585 	    do_wait();
586 	    if (comphand(crib, "crib"))
587 		return TRUE;
588 	}
589 	else {
590 	    if (comphand(chand, "hand"))
591 		return TRUE;
592 	    if (plyrhand(phand, "hand"))
593 		return TRUE;
594 	    if (plyrhand(crib, "crib"))
595 		return TRUE;
596 	}
597 	return FALSE;
598 }
599