gomoku/main.c

   1 /*      $NetBSD: main.c,v 1.6 1999/09/08 21:17:49 jsm Exp $     */
   2
   3 /*
   4  * Copyright (c) 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Ralph Campbell.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 __COPYRIGHT("@(#) Copyright (c) 1994\n\
  42         The Regents of the University of California.  All rights reserved.\n");
  43 #endif /* not lint */
  44
  45 #ifndef lint
  46 #if 0
  47 static char sccsid[] = "@(#)main.c      8.4 (Berkeley) 5/4/95";
  48 #else
  49 __RCSID("$NetBSD: main.c,v 1.6 1999/09/08 21:17:49 jsm Exp $");
  50 #endif
  51 #endif /* not lint */
  52
  53 #include <curses.h>
  54 #include <err.h>
  55 #include <signal.h>
  56 #include <stdlib.h>
  57 #include <string.h>
  58 #include <time.h>
  59 #include <unistd.h>
  60
  61 #include "gomoku.h"
  62
  63 #define USER    0               /* get input from standard input */
  64 #define PROGRAM 1               /* get input from program */
  65 #define INPUTF  2               /* get input from a file */
  66
  67 int     interactive = 1;        /* true if interactive */
  68 int     debug;                  /* true if debugging */
  69 int     test;                   /* both moves come from 1: input, 2: computer */
  70 char    *prog;                  /* name of program */
  71 FILE    *debugfp;               /* file for debug output */
  72 FILE    *inputfp;               /* file for debug input */
  73
  74 const char      pdir[4]         = "-\\|/";
  75 char    fmtbuf[128];
  76
  77 struct  spotstr board[BAREA];           /* info for board */
  78 struct  combostr frames[FAREA];         /* storage for all frames */
  79 struct  combostr *sortframes[2];        /* sorted list of non-empty frames */
  80 u_char  overlap[FAREA * FAREA];         /* true if frame [a][b] overlap */
  81 short   intersect[FAREA * FAREA];       /* frame [a][b] intersection */
  82 int     movelog[BSZ * BSZ];             /* log of all the moves */
  83 int     movenum;                        /* current move number */
  84 const char      *plyr[2];                       /* who's who */
  85
  86 int     main __P((int, char *[]));
  87
  88 int
  89 main(argc, argv)
  90         int argc;
  91         char **argv;
  92 {
  93         char buf[128];
  94         int color, curmove, i, ch;
  95         int input[2];
  96         static const char *const fmt[2] = {
  97                 "%3d %-6s",
  98                 "%3d        %-6s"
  99         };
 100
 101         color = curmove = 0;
 102
 103         prog = strrchr(argv[0], '/');
 104         if (prog)
 105                 prog++;
 106         else
 107                 prog = argv[0];
 108
 109         while ((ch = getopt(argc, argv, "bcdD:u")) != -1) {
 110                 switch (ch) {
 111                 case 'b':       /* background */
 112                         interactive = 0;
 113                         break;
 114                 case 'd':       /* debugging */
 115                         debug++;
 116                         break;
 117                 case 'D':       /* log debug output to file */
 118                         if ((debugfp = fopen(optarg, "w")) == NULL)
 119                                 err(1, "%s", optarg);
 120                         break;
 121                 case 'u':       /* testing: user verses user */
 122                         test = 1;
 123                         break;
 124                 case 'c':       /* testing: computer verses computer */
 125                         test = 2;
 126                         break;
 127                 }
 128         }
 129         argc -= optind;
 130         argv += optind;
 131         if (argc) {
 132                 if ((inputfp = fopen(*argv, "r")) == NULL)
 133                         err(1, "%s", *argv);
 134         }
 135
 136         if (!debug)
 137 #ifdef SVR4
 138                 srand(time(0));
 139 #else
 140                 srandom(time(0));
 141 #endif
 142         if (interactive)
 143                 cursinit();             /* initialize curses */
 144 again:
 145         bdinit(board);                  /* initialize board contents */
 146
 147         if (interactive) {
 148                 plyr[BLACK] = plyr[WHITE] = "???";
 149                 bdisp_init();           /* initialize display of board */
 150 #ifdef DEBUG
 151                 signal(SIGINT, whatsup);
 152 #else
 153                 signal(SIGINT, quitsig);
 154 #endif
 155
 156                 if (inputfp == NULL && test == 0) {
 157                         for (;;) {
 158                                 ask("black or white? ");
 159                                 getline(buf, sizeof(buf));
 160                                 if (buf[0] == 'b' || buf[0] == 'B') {
 161                                         color = BLACK;
 162                                         break;
 163                                 }
 164                                 if (buf[0] == 'w' || buf[0] == 'W') {
 165                                         color = WHITE;
 166                                         break;
 167                                 }
 168                                 move(22, 0);
 169                                 printw("Black moves first. Please enter `black' or `white'\n");
 170                         }
 171                         move(22, 0);
 172                         clrtoeol();
 173                 }
 174         } else {
 175                 setbuf(stdout, 0);
 176                 getline(buf, sizeof(buf));
 177                 if (strcmp(buf, "black") == 0)
 178                         color = BLACK;
 179                 else if (strcmp(buf, "white") == 0)
 180                         color = WHITE;
 181                 else {
 182                         sprintf(fmtbuf,
 183                             "Huh?  Expected `black' or `white', got `%s'\n",
 184                             buf);
 185                         panic(fmtbuf);
 186                 }
 187         }
 188
 189         if (inputfp) {
 190                 input[BLACK] = INPUTF;
 191                 input[WHITE] = INPUTF;
 192         } else {
 193                 switch (test) {
 194                 case 0: /* user verses program */
 195                         input[color] = USER;
 196                         input[!color] = PROGRAM;
 197                         break;
 198
 199                 case 1: /* user verses user */
 200                         input[BLACK] = USER;
 201                         input[WHITE] = USER;
 202                         break;
 203
 204                 case 2: /* program verses program */
 205                         input[BLACK] = PROGRAM;
 206                         input[WHITE] = PROGRAM;
 207                         break;
 208                 }
 209         }
 210         if (interactive) {
 211                 plyr[BLACK] = input[BLACK] == USER ? "you" : prog;
 212                 plyr[WHITE] = input[WHITE] == USER ? "you" : prog;
 213                 bdwho(1);
 214         }
 215
 216         for (color = BLACK; ; color = !color) {
 217         top:
 218                 switch (input[color]) {
 219                 case INPUTF: /* input comes from a file */
 220                         curmove = readinput(inputfp);
 221                         if (curmove != ILLEGAL)
 222                                 break;
 223                         switch (test) {
 224                         case 0: /* user verses program */
 225                                 input[color] = USER;
 226                                 input[!color] = PROGRAM;
 227                                 break;
 228
 229                         case 1: /* user verses user */
 230                                 input[BLACK] = USER;
 231                                 input[WHITE] = USER;
 232                                 break;
 233
 234                         case 2: /* program verses program */
 235                                 input[BLACK] = PROGRAM;
 236                                 input[WHITE] = PROGRAM;
 237                                 break;
 238                         }
 239                         plyr[BLACK] = input[BLACK] == USER ? "you" : prog;
 240                         plyr[WHITE] = input[WHITE] == USER ? "you" : prog;
 241                         bdwho(1);
 242                         goto top;
 243
 244                 case USER: /* input comes from standard input */
 245                 getinput:
 246                         if (interactive)
 247                                 ask("move? ");
 248                         if (!getline(buf, sizeof(buf))) {
 249                                 curmove = RESIGN;
 250                                 break;
 251                         }
 252                         if (buf[0] == '\0')
 253                                 goto getinput;
 254                         curmove = ctos(buf);
 255                         if (interactive) {
 256                                 if (curmove == SAVE) {
 257                                         FILE *fp;
 258
 259                                         ask("save file name? ");
 260                                         (void)getline(buf, sizeof(buf));
 261                                         if ((fp = fopen(buf, "w")) == NULL) {
 262                                                 log("cannot create save file");
 263                                                 goto getinput;
 264                                         }
 265                                         for (i = 0; i < movenum - 1; i++)
 266                                                 fprintf(fp, "%s\n",
 267                                                         stoc(movelog[i]));
 268                                         fclose(fp);
 269                                         goto getinput;
 270                                 }
 271                                 if (curmove != RESIGN &&
 272                                     board[curmove].s_occ != EMPTY) {
 273                                         log("Illegal move");
 274                                         goto getinput;
 275                                 }
 276                         }
 277                         break;
 278
 279                 case PROGRAM: /* input comes from the program */
 280                         curmove = pickmove(color);
 281                         break;
 282                 }
 283                 if (interactive) {
 284                         sprintf(fmtbuf, fmt[color], movenum, stoc(curmove));
 285                         log(fmtbuf);
 286                 }
 287                 if ((i = makemove(color, curmove)) != MOVEOK)
 288                         break;
 289                 if (interactive)
 290                         bdisp();
 291         }
 292         if (interactive) {
 293                 move(22, 0);
 294                 switch (i) {
 295                 case WIN:
 296                         if (input[color] == PROGRAM)
 297                                 addstr("Ha ha, I won");
 298                         else
 299                                 addstr("Rats! you won");
 300                         break;
 301                 case TIE:
 302                         addstr("Wow! its a tie");
 303                         break;
 304                 case ILLEGAL:
 305                         addstr("Illegal move");
 306                         break;
 307                 }
 308                 clrtoeol();
 309                 bdisp();
 310                 if (i != RESIGN) {
 311                 replay:
 312                         ask("replay? ");
 313                         if (getline(buf, sizeof(buf)) &&
 314                             (buf[0] == 'y' || buf[0] == 'Y'))
 315                                 goto again;
 316                         if (strcmp(buf, "save") == 0) {
 317                                 FILE *fp;
 318
 319                                 ask("save file name? ");
 320                                 (void)getline(buf, sizeof(buf));
 321                                 if ((fp = fopen(buf, "w")) == NULL) {
 322                                         log("cannot create save file");
 323                                         goto replay;
 324                                 }
 325                                 for (i = 0; i < movenum - 1; i++)
 326                                         fprintf(fp, "%s\n",
 327                                                 stoc(movelog[i]));
 328                                 fclose(fp);
 329                                 goto replay;
 330                         }
 331                 }
 332         }
 333         quit();
 334         /* NOTREACHED */
 335         return(0);
 336 }
 337
 338 int
 339 readinput(fp)
 340         FILE *fp;
 341 {
 342         char *cp;
 343         int c;
 344
 345         cp = fmtbuf;
 346         while ((c = getc(fp)) != EOF && c != '\n')
 347                 *cp++ = c;
 348         *cp = '\0';
 349         return (ctos(fmtbuf));
 350 }
 351
 352 #ifdef DEBUG
 353 /*
 354  * Handle strange situations.
 355  */
 356 void
 357 whatsup(signum)
 358         int signum;
 359 {
 360         int i, pnum, n, s1, s2, d1, d2;
 361         struct spotstr *sp;
 362         FILE *fp;
 363         char *str;
 364         struct elist *ep;
 365         struct combostr *cbp;
 366
 367         if (!interactive)
 368                 quit();
 369 top:
 370         ask("cmd? ");
 371         if (!getline(fmtbuf, sizeof(fmtbuf)))
 372                 quit();
 373         switch (*fmtbuf) {
 374         case '\0':
 375                 goto top;
 376         case 'q':               /* conservative quit */
 377                 quit();
 378         case 'd':               /* set debug level */
 379                 debug = fmtbuf[1] - '0';
 380                 sprintf(fmtbuf, "Debug set to %d", debug);
 381                 dlog(fmtbuf);
 382                 sleep(1);
 383         case 'c':
 384                 break;
 385         case 'b':               /* back up a move */
 386                 if (movenum > 1) {
 387                         movenum--;
 388                         board[movelog[movenum - 1]].s_occ = EMPTY;
 389                         bdisp();
 390                 }
 391                 goto top;
 392         case 's':               /* suggest a move */
 393                 i = fmtbuf[1] == 'b' ? BLACK : WHITE;
 394                 sprintf(fmtbuf, "suggest %c %s", i == BLACK ? 'B' : 'W',
 395                         stoc(pickmove(i)));
 396                 dlog(fmtbuf);
 397                 goto top;
 398         case 'f':               /* go forward a move */
 399                 board[movelog[movenum - 1]].s_occ = movenum & 1 ? BLACK : WHITE;
 400                 movenum++;
 401                 bdisp();
 402                 goto top;
 403         case 'l':               /* print move history */
 404                 if (fmtbuf[1] == '\0') {
 405                         for (i = 0; i < movenum - 1; i++)
 406                                 dlog(stoc(movelog[i]));
 407                         goto top;
 408                 }
 409                 if ((fp = fopen(fmtbuf + 1, "w")) == NULL)
 410                         goto top;
 411                 for (i = 0; i < movenum - 1; i++) {
 412                         fprintf(fp, "%s", stoc(movelog[i]));
 413                         if (++i < movenum - 1)
 414                                 fprintf(fp, " %s\n", stoc(movelog[i]));
 415                         else
 416                                 fputc('\n', fp);
 417                 }
 418                 bdump(fp);
 419                 fclose(fp);
 420                 goto top;
 421         case 'o':
 422                 n = 0;
 423                 for (str = fmtbuf + 1; *str; str++)
 424                         if (*str == ',') {
 425                                 for (d1 = 0; d1 < 4; d1++)
 426                                         if (str[-1] == pdir[d1])
 427                                                 break;
 428                                 str[-1] = '\0';
 429                                 sp = &board[s1 = ctos(fmtbuf + 1)];
 430                                 n = (sp->s_frame[d1] - frames) * FAREA;
 431                                 *str++ = '\0';
 432                                 break;
 433                         }
 434                 sp = &board[s2 = ctos(str)];
 435                 while (*str)
 436                         str++;
 437                 for (d2 = 0; d2 < 4; d2++)
 438                         if (str[-1] == pdir[d2])
 439                                 break;
 440                 n += sp->s_frame[d2] - frames;
 441                 str = fmtbuf;
 442                 sprintf(str, "overlap %s%c,", stoc(s1), pdir[d1]);
 443                 str += strlen(str);
 444                 sprintf(str, "%s%c = %x", stoc(s2), pdir[d2], overlap[n]);
 445                 dlog(fmtbuf);
 446                 goto top;
 447         case 'p':
 448                 sp = &board[i = ctos(fmtbuf + 1)];
 449                 sprintf(fmtbuf, "V %s %x/%d %d %x/%d %d %d %x", stoc(i),
 450                         sp->s_combo[BLACK].s, sp->s_level[BLACK],
 451                         sp->s_nforce[BLACK],
 452                         sp->s_combo[WHITE].s, sp->s_level[WHITE],
 453                         sp->s_nforce[WHITE], sp->s_wval, sp->s_flg);
 454                 dlog(fmtbuf);
 455                 sprintf(fmtbuf, "FB %s %x %x %x %x", stoc(i),
 456                         sp->s_fval[BLACK][0].s, sp->s_fval[BLACK][1].s,
 457                         sp->s_fval[BLACK][2].s, sp->s_fval[BLACK][3].s);
 458                 dlog(fmtbuf);
 459                 sprintf(fmtbuf, "FW %s %x %x %x %x", stoc(i),
 460                         sp->s_fval[WHITE][0].s, sp->s_fval[WHITE][1].s,
 461                         sp->s_fval[WHITE][2].s, sp->s_fval[WHITE][3].s);
 462                 dlog(fmtbuf);
 463                 goto top;
 464         case 'e':       /* e {b|w} [0-9] spot */
 465                 str = fmtbuf + 1;
 466                 if (*str >= '0' && *str <= '9')
 467                         n = *str++ - '0';
 468                 else
 469                         n = 0;
 470                 sp = &board[i = ctos(str)];
 471                 for (ep = sp->s_empty; ep; ep = ep->e_next) {
 472                         cbp = ep->e_combo;
 473                         if (n) {
 474                                 if (cbp->c_nframes > n)
 475                                         continue;
 476                                 if (cbp->c_nframes != n)
 477                                         break;
 478                         }
 479                         printcombo(cbp, fmtbuf);
 480                         dlog(fmtbuf);
 481                 }
 482                 goto top;
 483         default:
 484 syntax:
 485                 dlog("Options are:");
 486                 dlog("q    - quit");
 487                 dlog("c    - continue");
 488                 dlog("d#   - set debug level to #");
 489                 dlog("p#   - print values at #");
 490                 goto top;
 491         }
 492 }
 493 #endif /* DEBUG */
 494
 495 /*
 496  * Display debug info.
 497  */
 498 void
 499 dlog(str)
 500         const char *str;
 501 {
 502
 503         if (debugfp)
 504                 fprintf(debugfp, "%s\n", str);
 505         if (interactive)
 506                 dislog(str);
 507         else
 508                 fprintf(stderr, "%s\n", str);
 509 }
 510
 511 void
 512 log(str)
 513         const char *str;
 514 {
 515
 516         if (debugfp)
 517                 fprintf(debugfp, "%s\n", str);
 518         if (interactive)
 519                 dislog(str);
 520         else
 521                 printf("%s\n", str);
 522 }
 523
 524 void
 525 quit()
 526 {
 527         if (interactive) {
 528                 bdisp();                /* show final board */
 529                 cursfini();
 530         }
 531         exit(0);
 532 }
 533
 534 void
 535 quitsig(dummy)
 536         int dummy;
 537 {
 538         quit();
 539 }
 540
 541 /*
 542  * Die gracefully.
 543  */
 544 void
 545 panic(str)
 546         const char *str;
 547 {
 548         fprintf(stderr, "%s: %s\n", prog, str);
 549         fputs("resign\n", stdout);
 550         quit();
 551 }