main.c revision 1.42
1 /* $NetBSD: main.c,v 1.42 2022/05/19 22:49:05 rillig 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __COPYRIGHT("@(#) Copyright (c) 1994\ 37 The Regents of the University of California. All rights reserved."); 38 /* @(#)main.c 8.4 (Berkeley) 5/4/95 */ 39 __RCSID("$NetBSD: main.c,v 1.42 2022/05/19 22:49:05 rillig Exp $"); 40 41 #include <curses.h> 42 #include <err.h> 43 #include <limits.h> 44 #include <signal.h> 45 #include <stdarg.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <time.h> 49 #include <unistd.h> 50 51 #include "gomoku.h" 52 53 #define USER 0 /* get input from standard input */ 54 #define PROGRAM 1 /* get input from program */ 55 #define INPUTF 2 /* get input from a file */ 56 57 bool interactive = true; /* true if interactive */ 58 int debug; /* > 0 if debugging */ 59 static int test; /* both moves come from 1: input, 2: computer */ 60 static char *prog; /* name of program */ 61 static char user[LOGIN_NAME_MAX]; /* name of player */ 62 static FILE *debugfp; /* file for debug output */ 63 static FILE *inputfp; /* file for debug input */ 64 65 const char pdir[4] = "-\\|/"; 66 67 struct spotstr board[BAREA]; /* info for board */ 68 struct combostr frames[FAREA]; /* storage for all frames */ 69 struct combostr *sortframes[2]; /* sorted list of non-empty frames */ 70 u_char overlap[FAREA * FAREA]; /* true if frame [a][b] overlap */ 71 short intersect[FAREA * FAREA]; /* frame [a][b] intersection */ 72 int movelog[BSZ * BSZ]; /* log of all the moves */ 73 int movenum; /* current move number */ 74 const char *plyr[2]; /* who's who */ 75 76 static int readinput(FILE *); 77 static void misclog(const char *, ...) __printflike(1, 2); 78 static void quit(void) __dead; 79 #if !defined(DEBUG) 80 static void quitsig(int) __dead; 81 #endif 82 83 int 84 main(int argc, char **argv) 85 { 86 char buf[128]; 87 char fname[PATH_MAX]; 88 char *tmp; 89 int color, curmove, i, ch; 90 int input[2]; 91 92 /* Revoke setgid privileges */ 93 setgid(getgid()); 94 95 setprogname(argv[0]); 96 97 tmp = getlogin(); 98 if (tmp != NULL) { 99 strlcpy(user, tmp, sizeof(user)); 100 } else { 101 strcpy(user, "you"); 102 } 103 104 color = curmove = 0; 105 106 prog = strrchr(argv[0], '/'); 107 if (prog != NULL) 108 prog++; 109 else 110 prog = argv[0]; 111 112 while ((ch = getopt(argc, argv, "bcdD:u")) != -1) { 113 switch (ch) { 114 case 'b': /* background */ 115 interactive = false; 116 break; 117 case 'd': /* debugging */ 118 debug++; 119 break; 120 case 'D': /* log debug output to file */ 121 if ((debugfp = fopen(optarg, "w")) == NULL) 122 err(1, "%s", optarg); 123 break; 124 case 'u': /* testing: user versus user */ 125 test = 1; 126 break; 127 case 'c': /* testing: computer versus computer */ 128 test = 2; 129 break; 130 default: 131 fprintf(stderr, "usage: %s [-bcdu] [-Dfile] [file]\n", 132 getprogname()); 133 return EXIT_FAILURE; 134 } 135 } 136 argc -= optind; 137 argv += optind; 138 if (argc != 0) { 139 if ((inputfp = fopen(*argv, "r")) == NULL) 140 err(1, "%s", *argv); 141 } 142 143 if (debug == 0) 144 srandom((unsigned int)time(0)); 145 if (interactive) 146 cursinit(); /* initialize curses */ 147 again: 148 bdinit(board); /* initialize board contents */ 149 150 if (interactive) { 151 plyr[BLACK] = plyr[WHITE] = "???"; 152 bdisp_init(); /* initialize display of board */ 153 #ifdef DEBUG 154 signal(SIGINT, whatsup); 155 #else 156 signal(SIGINT, quitsig); 157 #endif 158 159 if (inputfp == NULL && test == 0) { 160 mvprintw(BSZ + 3, 0, "Black moves first. "); 161 ask("(B)lack or (W)hite? "); 162 for (;;) { 163 ch = get_key(NULL); 164 if (ch == 'b' || ch == 'B') { 165 color = BLACK; 166 break; 167 } 168 if (ch == 'w' || ch == 'W') { 169 color = WHITE; 170 break; 171 } 172 if (ch == 'q' || ch == 'Q') { 173 quit(); 174 } 175 beep(); 176 ask("Please choose (B)lack or (W)hite: "); 177 } 178 move(BSZ + 3, 0); 179 clrtoeol(); 180 } 181 } else { 182 setbuf(stdout, 0); 183 get_line(buf, sizeof(buf)); 184 if (strcmp(buf, "black") == 0) 185 color = BLACK; 186 else if (strcmp(buf, "white") == 0) 187 color = WHITE; 188 else { 189 panic("Huh? Expected `black' or `white', got `%s'\n", 190 buf); 191 } 192 } 193 194 if (inputfp != NULL) { 195 input[BLACK] = INPUTF; 196 input[WHITE] = INPUTF; 197 } else { 198 switch (test) { 199 case 0: /* user versus program */ 200 input[color] = USER; 201 input[color != BLACK ? BLACK : WHITE] = PROGRAM; 202 break; 203 204 case 1: /* user versus user */ 205 input[BLACK] = USER; 206 input[WHITE] = USER; 207 break; 208 209 case 2: /* program versus program */ 210 input[BLACK] = PROGRAM; 211 input[WHITE] = PROGRAM; 212 break; 213 } 214 } 215 if (interactive) { 216 plyr[BLACK] = input[BLACK] == USER ? user : prog; 217 plyr[WHITE] = input[WHITE] == USER ? user : prog; 218 bdwho(true); 219 } 220 221 for (color = BLACK; ; color = color != BLACK ? BLACK : WHITE) { 222 top: 223 switch (input[color]) { 224 case INPUTF: /* input comes from a file */ 225 curmove = readinput(inputfp); 226 if (curmove != ILLEGAL) 227 break; 228 switch (test) { 229 case 0: /* user versus program */ 230 input[color] = USER; 231 input[color != BLACK ? BLACK : WHITE] = 232 PROGRAM; 233 break; 234 235 case 1: /* user versus user */ 236 input[BLACK] = USER; 237 input[WHITE] = USER; 238 break; 239 240 case 2: /* program versus program */ 241 input[BLACK] = PROGRAM; 242 input[WHITE] = PROGRAM; 243 break; 244 } 245 plyr[BLACK] = input[BLACK] == USER ? user : prog; 246 plyr[WHITE] = input[WHITE] == USER ? user : prog; 247 bdwho(true); 248 goto top; 249 250 case USER: /* input comes from standard input */ 251 getinput: 252 if (interactive) { 253 ask("Select move, (S)ave or (Q)uit."); 254 curmove = get_coord(); 255 if (curmove == SAVE) { 256 FILE *fp; 257 258 ask("Save file name? "); 259 (void)get_line(fname, sizeof(fname)); 260 if ((fp = fopen(fname, "w")) == NULL) { 261 misclog("cannot create save file"); 262 goto getinput; 263 } 264 for (i = 0; i < movenum - 1; i++) 265 fprintf(fp, "%s\n", 266 stoc(movelog[i])); 267 fclose(fp); 268 goto getinput; 269 } 270 if (curmove != RESIGN && 271 board[curmove].s_occ != EMPTY) { 272 /*misclog("Illegal move");*/ 273 beep(); 274 goto getinput; 275 } 276 } else { 277 if (!get_line(buf, sizeof(buf))) { 278 curmove = RESIGN; 279 break; 280 } 281 if (buf[0] == '\0') 282 goto getinput; 283 curmove = ctos(buf); 284 } 285 break; 286 287 case PROGRAM: /* input comes from the program */ 288 if (interactive) 289 ask("Thinking..."); 290 curmove = pickmove(color); 291 break; 292 } 293 if (interactive) { 294 misclog("%3d%s%-6s", movenum, 295 color != BLACK ? " " : " ", 296 stoc(curmove)); 297 } 298 if ((i = makemove(color, curmove)) != MOVEOK) 299 break; 300 if (interactive) 301 bdisp(); 302 } 303 if (interactive) { 304 move(BSZ + 3, 0); 305 switch (i) { 306 case WIN: 307 if (input[color] == PROGRAM) 308 addstr("Ha ha, I won"); 309 else if (input[0] == USER && input[1] == USER) 310 addstr("Well, you won (and lost)"); 311 else 312 addstr("Rats! you won"); 313 break; 314 case TIE: 315 addstr("Wow! It's a tie"); 316 break; 317 case ILLEGAL: 318 addstr("Illegal move"); 319 break; 320 } 321 clrtoeol(); 322 bdisp(); 323 if (i != RESIGN) { 324 replay: 325 ask("Play again? "); 326 ch = get_key("YyNnQqSs"); 327 if (ch == 'Y' || ch == 'y') 328 goto again; 329 if (ch == 'S') { 330 FILE *fp; 331 332 ask("Save file name? "); 333 (void)get_line(fname, sizeof(fname)); 334 if ((fp = fopen(fname, "w")) == NULL) { 335 misclog("cannot create save file"); 336 goto replay; 337 } 338 for (i = 0; i < movenum - 1; i++) 339 fprintf(fp, "%s\n", 340 stoc(movelog[i])); 341 fclose(fp); 342 goto replay; 343 } 344 } 345 } 346 quit(); 347 } 348 349 static int 350 readinput(FILE *fp) 351 { 352 int c; 353 char buf[128]; 354 size_t pos; 355 356 pos = 0; 357 while ((c = getc(fp)) != EOF && c != '\n' && pos < sizeof(buf) - 1) 358 buf[pos++] = c; 359 buf[pos] = '\0'; 360 return ctos(buf); 361 } 362 363 #ifdef DEBUG 364 /* 365 * Handle strange situations. 366 */ 367 /* ARGSUSED */ 368 void 369 whatsup(int signum) 370 { 371 int i, n, s1, s2, d1, d2; 372 struct spotstr *sp; 373 FILE *fp; 374 char *str; 375 struct elist *ep; 376 struct combostr *cbp; 377 char input[128]; 378 char tmp[128]; 379 380 if (!interactive) 381 quit(); 382 top: 383 ask("debug command: "); 384 if (!get_line(input, sizeof(input))) 385 quit(); 386 switch (*input) { 387 case '\0': 388 goto top; 389 case 'q': /* conservative quit */ 390 quit(); 391 /* NOTREACHED */ 392 case 'd': /* set debug level */ 393 debug = input[1] - '0'; 394 debuglog("Debug set to %d", debug); 395 sleep(1); 396 break; 397 case 'c': 398 break; 399 case 'b': /* back up a move */ 400 if (movenum > 1) { 401 movenum--; 402 board[movelog[movenum - 1]].s_occ = EMPTY; 403 bdisp(); 404 } 405 goto top; 406 case 's': /* suggest a move */ 407 i = input[1] == 'b' ? BLACK : WHITE; 408 debuglog("suggest %c %s", i == BLACK ? 'B' : 'W', 409 stoc(pickmove(i))); 410 goto top; 411 case 'f': /* go forward a move */ 412 board[movelog[movenum - 1]].s_occ = 413 (movenum & 1) != 0 ? BLACK : WHITE; 414 movenum++; 415 bdisp(); 416 goto top; 417 case 'l': /* print move history */ 418 if (input[1] == '\0') { 419 for (i = 0; i < movenum - 1; i++) 420 debuglog("%s", stoc(movelog[i])); 421 goto top; 422 } 423 if ((fp = fopen(input + 1, "w")) == NULL) 424 goto top; 425 for (i = 0; i < movenum - 1; i++) { 426 fprintf(fp, "%s", stoc(movelog[i])); 427 if (++i < movenum - 1) 428 fprintf(fp, " %s\n", stoc(movelog[i])); 429 else 430 fputc('\n', fp); 431 } 432 bdump(fp); 433 fclose(fp); 434 goto top; 435 case 'o': 436 /* avoid use w/o initialization on invalid input */ 437 d1 = s1 = 0; 438 439 n = 0; 440 for (str = input + 1; *str != '\0'; str++) 441 if (*str == ',') { 442 for (d1 = 0; d1 < 4; d1++) 443 if (str[-1] == pdir[d1]) 444 break; 445 str[-1] = '\0'; 446 sp = &board[s1 = ctos(input + 1)]; 447 n = (int)(sp->s_frame[d1] - frames) * FAREA; 448 *str++ = '\0'; 449 break; 450 } 451 sp = &board[s2 = ctos(str)]; 452 while (*str != '\0') 453 str++; 454 for (d2 = 0; d2 < 4; d2++) 455 if (str[-1] == pdir[d2]) 456 break; 457 n += (int)(sp->s_frame[d2] - frames); 458 debuglog("overlap %s%c,%s%c = %x", stoc(s1), pdir[d1], 459 stoc(s2), pdir[d2], overlap[n]); 460 goto top; 461 case 'p': 462 sp = &board[i = ctos(input + 1)]; 463 debuglog("V %s %x/%d %d %x/%d %d %d %x", stoc(i), 464 sp->s_combo[BLACK].s, sp->s_level[BLACK], 465 sp->s_nforce[BLACK], 466 sp->s_combo[WHITE].s, sp->s_level[WHITE], 467 sp->s_nforce[WHITE], sp->s_wval, sp->s_flags); 468 debuglog("FB %s %x %x %x %x", stoc(i), 469 sp->s_fval[BLACK][0].s, sp->s_fval[BLACK][1].s, 470 sp->s_fval[BLACK][2].s, sp->s_fval[BLACK][3].s); 471 debuglog("FW %s %x %x %x %x", stoc(i), 472 sp->s_fval[WHITE][0].s, sp->s_fval[WHITE][1].s, 473 sp->s_fval[WHITE][2].s, sp->s_fval[WHITE][3].s); 474 goto top; 475 case 'e': /* e {b|w} [0-9] spot */ 476 str = input + 1; 477 if (*str >= '0' && *str <= '9') 478 n = *str++ - '0'; 479 else 480 n = 0; 481 sp = &board[i = ctos(str)]; 482 for (ep = sp->s_empty; ep != NULL; ep = ep->e_next) { 483 cbp = ep->e_combo; 484 if (n != 0) { 485 if (cbp->c_nframes > n) 486 continue; 487 if (cbp->c_nframes != n) 488 break; 489 } 490 printcombo(cbp, tmp, sizeof(tmp)); 491 debuglog("%s", tmp); 492 } 493 goto top; 494 default: 495 debuglog("Options are:"); 496 debuglog("q - quit"); 497 debuglog("c - continue"); 498 debuglog("d# - set debug level to #"); 499 debuglog("p# - print values at #"); 500 goto top; 501 } 502 } 503 #endif /* DEBUG */ 504 505 /* 506 * Display debug info. 507 */ 508 void 509 debuglog(const char *fmt, ...) 510 { 511 va_list ap; 512 char buf[128]; 513 514 va_start(ap, fmt); 515 vsnprintf(buf, sizeof(buf), fmt, ap); 516 va_end(ap); 517 518 if (debugfp != NULL) 519 fprintf(debugfp, "%s\n", buf); 520 if (interactive) 521 dislog(buf); 522 else 523 fprintf(stderr, "%s\n", buf); 524 } 525 526 static void 527 misclog(const char *fmt, ...) 528 { 529 va_list ap; 530 char buf[128]; 531 532 va_start(ap, fmt); 533 vsnprintf(buf, sizeof(buf), fmt, ap); 534 va_end(ap); 535 536 if (debugfp != NULL) 537 fprintf(debugfp, "%s\n", buf); 538 if (interactive) 539 dislog(buf); 540 else 541 printf("%s\n", buf); 542 } 543 544 static void 545 quit(void) 546 { 547 if (interactive) { 548 bdisp(); /* show final board */ 549 cursfini(); 550 } 551 exit(0); 552 } 553 554 #if !defined(DEBUG) 555 static void 556 quitsig(int dummy __unused) 557 { 558 quit(); 559 } 560 #endif 561 562 /* 563 * Die gracefully. 564 */ 565 void 566 panic(const char *fmt, ...) 567 { 568 va_list ap; 569 570 if (interactive) { 571 bdisp(); 572 cursfini(); 573 } 574 575 fprintf(stderr, "%s: ", prog); 576 va_start(ap, fmt); 577 vfprintf(stderr, fmt, ap); 578 va_end(ap); 579 fprintf(stderr, "\n"); 580 581 fputs("I resign\n", stdout); 582 exit(1); 583 } 584
Indexes created Tue Sep 30 20:09:53 GMT 2025