cribbage/crib.c

   1 /*      $NetBSD: crib.c,v 1.5 1995/03/21 15:08:42 cgd Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1980, 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #ifndef lint
  37 static char copyright[] =
  38 "@(#) Copyright (c) 1980, 1993\n\
  39         The Regents of the University of California.  All rights reserved.\n";
  40 #endif /* not lint */
  41
  42 #ifndef lint
  43 #if 0
  44 static char sccsid[] = "@(#)crib.c      8.1 (Berkeley) 5/31/93";
  45 #else
  46 static char rcsid[] = "$NetBSD: crib.c,v 1.5 1995/03/21 15:08:42 cgd Exp $";
  47 #endif
  48 #endif /* not lint */
  49
  50 #include <curses.h>
  51 #include <signal.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55
  56 #include "deck.h"
  57 #include "cribbage.h"
  58 #include "cribcur.h"
  59 #include "pathnames.h"
  60
  61 int
  62 main(argc, argv)
  63         int argc;
  64         char *argv[];
  65 {
  66         BOOLEAN playing;
  67         FILE *f;
  68         int ch;
  69
  70         while ((ch = getopt(argc, argv, "eqr")) != EOF)
  71                 switch (ch) {
  72                 case 'e':
  73                         explain = TRUE;
  74                         break;
  75                 case 'q':
  76                         quiet = TRUE;
  77                         break;
  78                 case 'r':
  79                         rflag = TRUE;
  80                         break;
  81                 case '?':
  82                 default:
  83                         (void) fprintf(stderr, "usage: cribbage [-eqr]\n");
  84                         exit(1);
  85                 }
  86
  87         initscr();
  88         (void)signal(SIGINT, rint);
  89         crmode();
  90         noecho();
  91
  92         Playwin = subwin(stdscr, PLAY_Y, PLAY_X, 0, 0);
  93         Tablewin = subwin(stdscr, TABLE_Y, TABLE_X, 0, PLAY_X);
  94         Compwin = subwin(stdscr, COMP_Y, COMP_X, 0, TABLE_X + PLAY_X);
  95         Msgwin = subwin(stdscr, MSG_Y, MSG_X, Y_MSG_START, SCORE_X + 1);
  96         leaveok(Playwin, TRUE);
  97         leaveok(Tablewin, TRUE);
  98         leaveok(Compwin, TRUE);
  99         clearok(stdscr, FALSE);
 100
 101         if (!quiet) {
 102                 msg("Do you need instructions for cribbage? ");
 103                 if (getuchar() == 'Y') {
 104                         endwin();
 105                         clear();
 106                         mvcur(0, COLS - 1, LINES - 1, 0);
 107                         fflush(stdout);
 108                         instructions();
 109                         crmode();
 110                         noecho();
 111                         clear();
 112                         refresh();
 113                         msg("For cribbage rules, use \"man cribbage\"");
 114                 }
 115         }
 116         playing = TRUE;
 117         do {
 118                 wclrtobot(Msgwin);
 119                 msg(quiet ? "L or S? " : "Long (to 121) or Short (to 61)? ");
 120                 if (glimit == SGAME)
 121                         glimit = (getuchar() == 'L' ? LGAME : SGAME);
 122                 else
 123                         glimit = (getuchar() == 'S' ? SGAME : LGAME);
 124                 game();
 125                 msg("Another game? ");
 126                 playing = (getuchar() == 'Y');
 127         } while (playing);
 128
 129         if (f = fopen(_PATH_LOG, "a")) {
 130                 (void)fprintf(f, "%s: won %5.5d, lost %5.5d\n",
 131                     getlogin(), cgames, pgames);
 132                 (void) fclose(f);
 133         }
 134         bye();
 135         if (!f) {
 136                 (void) fprintf(stderr, "\ncribbage: can't open %s.\n",
 137                     _PATH_LOG);
 138                 exit(1);
 139         }
 140         exit(0);
 141 }
 142
 143 /*
 144  * makeboard:
 145  *      Print out the initial board on the screen
 146  */
 147 void
 148 makeboard()
 149 {
 150         mvaddstr(SCORE_Y + 0, SCORE_X,
 151             "+---------------------------------------+");
 152         mvaddstr(SCORE_Y + 1, SCORE_X,
 153             "|  Score:   0     YOU                   |");
 154         mvaddstr(SCORE_Y + 2, SCORE_X,
 155             "| *.....:.....:.....:.....:.....:.....  |");
 156         mvaddstr(SCORE_Y + 3, SCORE_X,
 157             "| *.....:.....:.....:.....:.....:.....  |");
 158         mvaddstr(SCORE_Y + 4, SCORE_X,
 159             "|                                       |");
 160         mvaddstr(SCORE_Y + 5, SCORE_X,
 161             "| *.....:.....:.....:.....:.....:.....  |");
 162         mvaddstr(SCORE_Y + 6, SCORE_X,
 163             "| *.....:.....:.....:.....:.....:.....  |");
 164         mvaddstr(SCORE_Y + 7, SCORE_X,
 165             "|  Score:   0      ME                   |");
 166         mvaddstr(SCORE_Y + 8, SCORE_X,
 167             "+---------------------------------------+");
 168         gamescore();
 169 }
 170
 171 /*
 172  * gamescore:
 173  *      Print out the current game score
 174  */
 175 void
 176 gamescore()
 177 {
 178         extern int Lastscore[];
 179
 180         if (pgames || cgames) {
 181                 mvprintw(SCORE_Y + 1, SCORE_X + 28, "Games: %3d", pgames);
 182                 mvprintw(SCORE_Y + 7, SCORE_X + 28, "Games: %3d", cgames);
 183         }
 184         Lastscore[0] = -1;
 185         Lastscore[1] = -1;
 186 }
 187
 188 /*
 189  * game:
 190  *      Play one game up to glimit points.  Actually, we only ASK the
 191  *      player what card to turn.  We do a random one, anyway.
 192  */
 193 void
 194 game()
 195 {
 196         register int i, j;
 197         BOOLEAN flag;
 198         BOOLEAN compcrib;
 199
 200         makedeck(deck);
 201         shuffle(deck);
 202         if (gamecount == 0) {
 203                 flag = TRUE;
 204                 do {
 205                         if (!rflag) {                   /* player cuts deck */
 206                                 msg(quiet ? "Cut for crib? " :
 207                             "Cut to see whose crib it is -- low card wins? ");
 208                                 getline();
 209                         }
 210                         i = (rand() >> 4) % CARDS;      /* random cut */
 211                         do {    /* comp cuts deck */
 212                                 j = (rand() >> 4) % CARDS;
 213                         } while (j == i);
 214                         addmsg(quiet ? "You cut " : "You cut the ");
 215                         msgcard(deck[i], FALSE);
 216                         endmsg();
 217                         addmsg(quiet ? "I cut " : "I cut the ");
 218                         msgcard(deck[j], FALSE);
 219                         endmsg();
 220                         flag = (deck[i].rank == deck[j].rank);
 221                         if (flag) {
 222                                 msg(quiet ? "We tied..." :
 223                                     "We tied and have to try again...");
 224                                 shuffle(deck);
 225                                 continue;
 226                         } else
 227                                 compcrib = (deck[i].rank > deck[j].rank);
 228                 } while (flag);
 229                 clear();
 230                 makeboard();
 231                 refresh();
 232         } else {
 233                 werase(Tablewin);
 234                 wrefresh(Tablewin);
 235                 werase(Compwin);
 236                 wrefresh(Compwin);
 237                 msg("Loser (%s) gets first crib", (iwon ? "you" : "me"));
 238                 compcrib = !iwon;
 239         }
 240
 241         pscore = cscore = 0;
 242         flag = TRUE;
 243         do {
 244                 shuffle(deck);
 245                 flag = !playhand(compcrib);
 246                 compcrib = !compcrib;
 247         } while (flag);
 248         ++gamecount;
 249         if (cscore < pscore) {
 250                 if (glimit - cscore > 60) {
 251                         msg("YOU DOUBLE SKUNKED ME!");
 252                         pgames += 4;
 253                 } else
 254                         if (glimit - cscore > 30) {
 255                                 msg("YOU SKUNKED ME!");
 256                                 pgames += 2;
 257                         } else {
 258                                 msg("YOU WON!");
 259                                 ++pgames;
 260                         }
 261                 iwon = FALSE;
 262         } else {
 263                 if (glimit - pscore > 60) {
 264                         msg("I DOUBLE SKUNKED YOU!");
 265                         cgames += 4;
 266                 } else
 267                         if (glimit - pscore > 30) {
 268                                 msg("I SKUNKED YOU!");
 269                                 cgames += 2;
 270                         } else {
 271                                 msg("I WON!");
 272                                 ++cgames;
 273                         }
 274                 iwon = TRUE;
 275         }
 276         gamescore();
 277 }
 278
 279 /*
 280  * playhand:
 281  *      Do up one hand of the game
 282  */
 283 int
 284 playhand(mycrib)
 285         BOOLEAN mycrib;
 286 {
 287         register int deckpos;
 288
 289         werase(Compwin);
 290
 291         knownum = 0;
 292         deckpos = deal(mycrib);
 293         sorthand(chand, FULLHAND);
 294         sorthand(phand, FULLHAND);
 295         makeknown(chand, FULLHAND);
 296         prhand(phand, FULLHAND, Playwin, FALSE);
 297         discard(mycrib);
 298         if (cut(mycrib, deckpos))
 299                 return TRUE;
 300         if (peg(mycrib))
 301                 return TRUE;
 302         werase(Tablewin);
 303         wrefresh(Tablewin);
 304         if (score(mycrib))
 305                 return TRUE;
 306         return FALSE;
 307 }
 308
 309 /*
 310  * deal cards to both players from deck
 311  */
 312 int
 313 deal(mycrib)
 314         BOOLEAN mycrib;
 315 {
 316         register int i, j;
 317
 318         for (i = j = 0; i < FULLHAND; i++) {
 319                 if (mycrib) {
 320                         phand[i] = deck[j++];
 321                         chand[i] = deck[j++];
 322                 } else {
 323                         chand[i] = deck[j++];
 324                         phand[i] = deck[j++];
 325                 }
 326         }
 327         return (j);
 328 }
 329
 330 /*
 331  * discard:
 332  *      Handle players discarding into the crib...
 333  * Note: we call cdiscard() after prining first message so player doesn't wait
 334  */
 335 void
 336 discard(mycrib)
 337         BOOLEAN mycrib;
 338 {
 339         register char *prompt;
 340         CARD crd;
 341
 342         prcrib(mycrib, TRUE);
 343         prompt = (quiet ? "Discard --> " : "Discard a card --> ");
 344         cdiscard(mycrib);       /* puts best discard at end */
 345         crd = phand[infrom(phand, FULLHAND, prompt)];
 346         cremove(crd, phand, FULLHAND);
 347         prhand(phand, FULLHAND, Playwin, FALSE);
 348         crib[0] = crd;
 349
 350         /* Next four lines same as last four except for cdiscard(). */
 351         crd = phand[infrom(phand, FULLHAND - 1, prompt)];
 352         cremove(crd, phand, FULLHAND - 1);
 353         prhand(phand, FULLHAND, Playwin, FALSE);
 354         crib[1] = crd;
 355         crib[2] = chand[4];
 356         crib[3] = chand[5];
 357         chand[4].rank = chand[4].suit = chand[5].rank = chand[5].suit = EMPTY;
 358 }
 359
 360 /*
 361  * cut:
 362  *      Cut the deck and set turnover.  Actually, we only ASK the
 363  *      player what card to turn.  We do a random one, anyway.
 364  */
 365 int
 366 cut(mycrib, pos)
 367         BOOLEAN mycrib;
 368         int  pos;
 369 {
 370         register int i;
 371         BOOLEAN win;
 372
 373         win = FALSE;
 374         if (mycrib) {
 375                 if (!rflag) {   /* random cut */
 376                         msg(quiet ? "Cut the deck? " :
 377                     "How many cards down do you wish to cut the deck? ");
 378                         getline();
 379                 }
 380                 i = (rand() >> 4) % (CARDS - pos);
 381                 turnover = deck[i + pos];
 382                 addmsg(quiet ? "You cut " : "You cut the ");
 383                 msgcard(turnover, FALSE);
 384                 endmsg();
 385                 if (turnover.rank == JACK) {
 386                         msg("I get two for his heels");
 387                         win = chkscr(&cscore, 2);
 388                 }
 389         } else {
 390                 i = (rand() >> 4) % (CARDS - pos) + pos;
 391                 turnover = deck[i];
 392                 addmsg(quiet ? "I cut " : "I cut the ");
 393                 msgcard(turnover, FALSE);
 394                 endmsg();
 395                 if (turnover.rank == JACK) {
 396                         msg("You get two for his heels");
 397                         win = chkscr(&pscore, 2);
 398                 }
 399         }
 400         makeknown(&turnover, 1);
 401         prcrib(mycrib, FALSE);
 402         return (win);
 403 }
 404
 405 /*
 406  * prcrib:
 407  *      Print out the turnover card with crib indicator
 408  */
 409 void
 410 prcrib(mycrib, blank)
 411         BOOLEAN mycrib, blank;
 412 {
 413         register int y, cardx;
 414
 415         if (mycrib)
 416                 cardx = CRIB_X;
 417         else
 418                 cardx = 0;
 419
 420         mvaddstr(CRIB_Y, cardx + 1, "CRIB");
 421         prcard(stdscr, CRIB_Y + 1, cardx, turnover, blank);
 422
 423         if (mycrib)
 424                 cardx = 0;
 425         else
 426                 cardx = CRIB_X;
 427
 428         for (y = CRIB_Y; y <= CRIB_Y + 5; y++)
 429                 mvaddstr(y, cardx, "       ");
 430 }
 431
 432 /*
 433  * peg:
 434  *      Handle all the pegging...
 435  */
 436 static CARD Table[14];
 437 static int Tcnt;
 438
 439 int
 440 peg(mycrib)
 441         BOOLEAN mycrib;
 442 {
 443         static CARD ch[CINHAND], ph[CINHAND];
 444         register int i, j, k;
 445         register int l;
 446         register int cnum, pnum, sum;
 447         register BOOLEAN myturn, mego, ugo, last, played;
 448         CARD crd;
 449
 450         cnum = pnum = CINHAND;
 451         for (i = 0; i < CINHAND; i++) { /* make copies of hands */
 452                 ch[i] = chand[i];
 453                 ph[i] = phand[i];
 454         }
 455         Tcnt = 0;               /* index to table of cards played */
 456         sum = 0;                /* sum of cards played */
 457         mego = ugo = FALSE;
 458         myturn = !mycrib;
 459         for (;;) {
 460                 last = TRUE;    /* enable last flag */
 461                 prhand(ph, pnum, Playwin, FALSE);
 462                 prhand(ch, cnum, Compwin, TRUE);
 463                 prtable(sum);
 464                 if (myturn) {   /* my tyrn to play */
 465                         if (!anymove(ch, cnum, sum)) {  /* if no card to play */
 466                                 if (!mego && cnum) {    /* go for comp? */
 467                                         msg("GO");
 468                                         mego = TRUE;
 469                                 }
 470                                                         /* can player move? */
 471                                 if (anymove(ph, pnum, sum))
 472                                         myturn = !myturn;
 473                                 else {                  /* give him his point */
 474                                         msg(quiet ? "You get one" :
 475                                             "You get one point");
 476                                         if (chkscr(&pscore, 1))
 477                                                 return TRUE;
 478                                         sum = 0;
 479                                         mego = ugo = FALSE;
 480                                         Tcnt = 0;
 481                                 }
 482                         } else {
 483                                 played = TRUE;
 484                                 j = -1;
 485                                 k = 0;
 486                                                         /* maximize score */
 487                                 for (i = 0; i < cnum; i++) {
 488                                         l = pegscore(ch[i], Table, Tcnt, sum);
 489                                         if (l > k) {
 490                                                 k = l;
 491                                                 j = i;
 492                                         }
 493                                 }
 494                                 if (j < 0)              /* if nothing scores */
 495                                         j = cchose(ch, cnum, sum);
 496                                 crd = ch[j];
 497                                 cremove(crd, ch, cnum--);
 498                                 sum += VAL(crd.rank);
 499                                 Table[Tcnt++] = crd;
 500                                 if (k > 0) {
 501                                         addmsg(quiet ? "I get %d playing " :
 502                                             "I get %d points playing ", k);
 503                                         msgcard(crd, FALSE);
 504                                         endmsg();
 505                                         if (chkscr(&cscore, k))
 506                                                 return TRUE;
 507                                 }
 508                                 myturn = !myturn;
 509                         }
 510                 } else {
 511                         if (!anymove(ph, pnum, sum)) {  /* can player move? */
 512                                 if (!ugo && pnum) {     /* go for player */
 513                                         msg("You have a GO");
 514                                         ugo = TRUE;
 515                                 }
 516                                                         /* can computer play? */
 517                                 if (anymove(ch, cnum, sum))
 518                                         myturn = !myturn;
 519                                 else {
 520                                         msg(quiet ? "I get one" :
 521                                             "I get one point");
 522                                         do_wait();
 523                                         if (chkscr(&cscore, 1))
 524                                                 return TRUE;
 525                                         sum = 0;
 526                                         mego = ugo = FALSE;
 527                                         Tcnt = 0;
 528                                 }
 529                         } else {                        /* player plays */
 530                                 played = FALSE;
 531                                 if (pnum == 1) {
 532                                         crd = ph[0];
 533                                         msg("You play your last card");
 534                                 } else
 535                                         for (;;) {
 536                                                 prhand(ph,
 537                                                     pnum, Playwin, FALSE);
 538                                                 crd = ph[infrom(ph,
 539                                                     pnum, "Your play: ")];
 540                                                 if (sum + VAL(crd.rank) <= 31)
 541                                                         break;
 542                                                 else
 543                                         msg("Total > 31 -- try again");
 544                                         }
 545                                 makeknown(&crd, 1);
 546                                 cremove(crd, ph, pnum--);
 547                                 i = pegscore(crd, Table, Tcnt, sum);
 548                                 sum += VAL(crd.rank);
 549                                 Table[Tcnt++] = crd;
 550                                 if (i > 0) {
 551                                         msg(quiet ? "You got %d" :
 552                                             "You got %d points", i);
 553                                         if (chkscr(&pscore, i))
 554                                                 return TRUE;
 555                                 }
 556                                 myturn = !myturn;
 557                         }
 558                 }
 559                 if (sum >= 31) {
 560                         if (!myturn)
 561                                 do_wait();
 562                         sum = 0;
 563                         mego = ugo = FALSE;
 564                         Tcnt = 0;
 565                         last = FALSE;                   /* disable last flag */
 566                 }
 567                 if (!pnum && !cnum)
 568                         break;                          /* both done */
 569         }
 570         prhand(ph, pnum, Playwin, FALSE);
 571         prhand(ch, cnum, Compwin, TRUE);
 572         prtable(sum);
 573         if (last)
 574                 if (played) {
 575                         msg(quiet ? "I get one for last" :
 576                             "I get one point for last");
 577                         do_wait();
 578                         if (chkscr(&cscore, 1))
 579                                 return TRUE;
 580                 } else {
 581                         msg(quiet ? "You get one for last" :
 582                             "You get one point for last");
 583                         if (chkscr(&pscore, 1))
 584                                 return TRUE;
 585                 }
 586         return (FALSE);
 587 }
 588
 589 /*
 590  * prtable:
 591  *      Print out the table with the current score
 592  */
 593 void
 594 prtable(score)
 595         int score;
 596 {
 597         prhand(Table, Tcnt, Tablewin, FALSE);
 598         mvwprintw(Tablewin, (Tcnt + 2) * 2, Tcnt + 1, "%2d", score);
 599         wrefresh(Tablewin);
 600 }
 601
 602 /*
 603  * score:
 604  *      Handle the scoring of the hands
 605  */
 606 int
 607 score(mycrib)
 608         BOOLEAN mycrib;
 609 {
 610         sorthand(crib, CINHAND);
 611         if (mycrib) {
 612                 if (plyrhand(phand, "hand"))
 613                         return (TRUE);
 614                 if (comphand(chand, "hand"))
 615                         return (TRUE);
 616                 do_wait();
 617                 if (comphand(crib, "crib"))
 618                         return (TRUE);
 619         } else {
 620                 if (comphand(chand, "hand"))
 621                         return (TRUE);
 622                 if (plyrhand(phand, "hand"))
 623                         return (TRUE);
 624                 if (plyrhand(crib, "crib"))
 625                         return (TRUE);
 626         }
 627         return (FALSE);
 628 }