games/mille/move.c

   1 /*-
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)move.c   8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/mille/move.c,v 1.6 1999/12/12 06:17:24 billf Exp $
  31  * $DragonFly: src/games/mille/move.c,v 1.5 2006/08/27 17:17:23 pavalos Exp $
  32  */
  33
  34 #include <termios.h>
  35
  36 #include "mille.h"
  37 #include <unctrl.h>
  38 #include <term.h>
  39
  40 /*
  41  * @(#)move.c   1.2 (Berkeley) 3/28/83
  42  */
  43
  44 #undef  CTRL
  45 #define CTRL(c)         (c - 'A' + 1)
  46
  47 const char      *Movenames[] = {
  48                 "M_DISCARD", "M_DRAW", "M_PLAY", "M_ORDER"
  49         };
  50
  51 static void check_go(void);
  52 static void getmove(void);
  53 static int haspicked(PLAY *);
  54 static bool playcard(PLAY *);
  55
  56 void
  57 domove(void)
  58 {
  59         PLAY    *pp;
  60         int     i, j;
  61         bool    goodplay;
  62
  63         pp = &Player[Play];
  64         if (Play == PLAYER)
  65                 getmove();
  66         else
  67                 calcmove();
  68         Next = FALSE;
  69         goodplay = TRUE;
  70         switch (Movetype) {
  71           case M_DISCARD:
  72                 if (haspicked(pp)) {
  73                         if (pp->hand[Card_no] == C_INIT)
  74                                 if (Card_no == 6)
  75                                         Finished = TRUE;
  76                                 else
  77                                         error("no card there");
  78                         else {
  79                                 if (issafety(pp->hand[Card_no])) {
  80                                         error("discard a safety?");
  81                                         goodplay = FALSE;
  82                                         break;
  83                                 }
  84                                 Discard = pp->hand[Card_no];
  85                                 pp->hand[Card_no] = C_INIT;
  86                                 Next = TRUE;
  87                                 if (Play == PLAYER)
  88                                         account(Discard);
  89                         }
  90                 }
  91                 else
  92                         error("must pick first");
  93                 break;
  94           case M_PLAY:
  95                 goodplay = playcard(pp);
  96                 break;
  97           case M_DRAW:
  98                 Card_no = 0;
  99                 if (Topcard <= Deck)
 100                         error("no more cards");
 101                 else if (haspicked(pp))
 102                         error("already picked");
 103                 else {
 104                         pp->hand[0] = *--Topcard;
 105 #ifdef DEBUG
 106                         if (Debug)
 107                                 fprintf(outf, "DOMOVE: Draw %s\n", C_name[*Topcard]);
 108 #endif
 109 acc:
 110                         if (Play == COMP) {
 111                                 account(*Topcard);
 112                                 if (issafety(*Topcard))
 113                                         pp->safety[*Topcard-S_CONV] = S_IN_HAND;
 114                         }
 115                         if (pp->hand[1] == C_INIT && Topcard > Deck) {
 116                                 Card_no = 1;
 117                                 pp->hand[1] = *--Topcard;
 118 #ifdef DEBUG
 119                                 if (Debug)
 120                                         fprintf(outf, "DOMOVE: Draw %s\n", C_name[*Topcard]);
 121 #endif
 122                                 goto acc;
 123                         }
 124                         pp->new_battle = FALSE;
 125                         pp->new_speed = FALSE;
 126                 }
 127                 break;
 128
 129           case M_ORDER:
 130                 break;
 131         }
 132         /*
 133          * move blank card to top by one of two methods.  If the
 134          * computer's hand was sorted, the randomness for picking
 135          * between equally valued cards would be lost
 136          */
 137         if (Order && Movetype != M_DRAW && goodplay && pp == &Player[PLAYER])
 138                 sort(pp->hand);
 139         else
 140                 for (i = 1; i < HAND_SZ; i++)
 141                         if (pp->hand[i] == C_INIT) {
 142                                 for (j = 0; pp->hand[j] == C_INIT; j++)
 143                                         if (j == HAND_SZ - 1) {
 144                                                 j = 0;
 145                                                 break;
 146                                         }
 147                                 pp->hand[i] = pp->hand[j];
 148                                 pp->hand[j] = C_INIT;
 149                         }
 150         if (Topcard <= Deck)
 151                 check_go();
 152         if (Next)
 153                 nextplay();
 154 }
 155
 156 /*
 157  *      Check and see if either side can go.  If they cannot,
 158  * the game is over
 159  */
 160 static void
 161 check_go(void)
 162 {
 163         CARD    card;
 164         PLAY    *pp, *op;
 165         int     i;
 166
 167         for (pp = Player; pp < &Player[2]; pp++) {
 168                 op = (pp == &Player[COMP] ? &Player[PLAYER] : &Player[COMP]);
 169                 for (i = 0; i < HAND_SZ; i++) {
 170                         card = pp->hand[i];
 171                         if (issafety(card) || canplay(pp, op, card)) {
 172 #ifdef DEBUG
 173                                 if (Debug) {
 174                                         fprintf(outf, "CHECK_GO: can play %s (%d), ", C_name[card], card);
 175                                         fprintf(outf, "issafety(card) = %d, ", issafety(card));
 176                                         fprintf(outf, "canplay(pp, op, card) = %d\n", canplay(pp, op, card));
 177                                 }
 178 #endif
 179                                 return;
 180                         }
 181 #ifdef DEBUG
 182                         else if (Debug)
 183                                 fprintf(outf, "CHECK_GO: cannot play %s\n",
 184                                     C_name[card]);
 185 #endif
 186                 }
 187         }
 188         Finished = TRUE;
 189 }
 190
 191 static bool
 192 playcard(PLAY *pp)
 193 {
 194         int     v;
 195         CARD    card;
 196         bool    blockNext;
 197
 198         /*
 199          * check and see if player has picked
 200          */
 201         switch (pp->hand[Card_no]) {
 202           default:
 203                 if (!haspicked(pp))
 204 mustpick:
 205                         return error("must pick first");
 206           case C_GAS_SAFE:      case C_SPARE_SAFE:
 207           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
 208                 break;
 209         }
 210
 211         card = pp->hand[Card_no];
 212 #ifdef DEBUG
 213         if (Debug)
 214                 fprintf(outf, "PLAYCARD: Card = %s\n", C_name[card]);
 215 #endif
 216         blockNext = FALSE;
 217         switch (card) {
 218           case C_200:
 219                 if (pp->nummiles[C_200] == 2)
 220                         return error("only two 200's per hand");
 221           case C_100:   case C_75:
 222                 if (pp->speed == C_LIMIT)
 223                         return error("limit of 50");
 224           case C_50:
 225                 if (pp->mileage + Value[card] > End)
 226                         return error("puts you over %d", End);
 227           case C_25:
 228                 if (!pp->can_go)
 229                         return error("cannot move now");
 230                 pp->nummiles[card]++;
 231                 v = Value[card];
 232                 pp->total += v;
 233                 pp->hand_tot += v;
 234                 if ((pp->mileage += v) == End)
 235                         check_ext(FALSE);
 236                 break;
 237
 238           case C_GAS:   case C_SPARE:   case C_REPAIRS:
 239                 if (pp->battle != opposite(card))
 240                         return error("can't play \"%s\"", C_name[card]);
 241                 pp->battle = card;
 242                 if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
 243                         pp->can_go = TRUE;
 244                 break;
 245
 246           case C_GO:
 247                 if (pp->battle != C_INIT && pp->battle != C_STOP
 248                     && !isrepair(pp->battle))
 249                         return error("cannot play \"Go\" on a \"%s\"",
 250                             C_name[pp->battle]);
 251                 pp->battle = C_GO;
 252                 pp->can_go = TRUE;
 253                 break;
 254
 255           case C_END_LIMIT:
 256                 if (pp->speed != C_LIMIT)
 257                         return error("not limited");
 258                 pp->speed = C_END_LIMIT;
 259                 break;
 260
 261           case C_EMPTY: case C_FLAT:    case C_CRASH:
 262           case C_STOP:
 263                 pp = &Player[other(Play)];
 264                 if (!pp->can_go)
 265                         return error("opponent cannot go");
 266                 else if (pp->safety[safety(card) - S_CONV] == S_PLAYED)
 267 protected:
 268                         return error("opponent is protected");
 269                 pp->battle = card;
 270                 pp->new_battle = TRUE;
 271                 pp->can_go = FALSE;
 272                 pp = &Player[Play];
 273                 break;
 274
 275           case C_LIMIT:
 276                 pp = &Player[other(Play)];
 277                 if (pp->speed == C_LIMIT)
 278                         return error("opponent has limit");
 279                 if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
 280                         goto protected;
 281                 pp->speed = C_LIMIT;
 282                 pp->new_speed = TRUE;
 283                 pp = &Player[Play];
 284                 break;
 285
 286           case C_GAS_SAFE:      case C_SPARE_SAFE:
 287           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
 288                 if (pp->battle == opposite(card)
 289                     || (card == C_RIGHT_WAY && pp->speed == C_LIMIT)) {
 290                         if (!(card == C_RIGHT_WAY && !isrepair(pp->battle))) {
 291                                 pp->battle = C_GO;
 292                                 pp->can_go = TRUE;
 293                         }
 294                         if (card == C_RIGHT_WAY && pp->speed == C_LIMIT)
 295                                 pp->speed = C_INIT;
 296                         if (pp->new_battle
 297                             || (pp->new_speed && card == C_RIGHT_WAY)) {
 298                                 pp->coups[card - S_CONV] = TRUE;
 299                                 pp->total += SC_COUP;
 300                                 pp->hand_tot += SC_COUP;
 301                                 pp->coupscore += SC_COUP;
 302                         }
 303                 }
 304                 /*
 305                  * if not coup, must pick first
 306                  */
 307                 else if (pp->hand[0] == C_INIT && Topcard > Deck)
 308                         goto mustpick;
 309                 pp->safety[card - S_CONV] = S_PLAYED;
 310                 pp->total += SC_SAFETY;
 311                 pp->hand_tot += SC_SAFETY;
 312                 if ((pp->safescore += SC_SAFETY) == NUM_SAFE * SC_SAFETY) {
 313                         pp->total += SC_ALL_SAFE;
 314                         pp->hand_tot += SC_ALL_SAFE;
 315                 }
 316                 if (card == C_RIGHT_WAY) {
 317                         if (pp->speed == C_LIMIT)
 318                                 pp->speed = C_INIT;
 319                         if (pp->battle == C_STOP || pp->battle == C_INIT) {
 320                                 pp->can_go = TRUE;
 321                                 pp->battle = C_INIT;
 322                         }
 323                         if (!pp->can_go && isrepair(pp->battle))
 324                                 pp->can_go = TRUE;
 325                 }
 326                 blockNext = TRUE;
 327                 break;
 328
 329           case C_INIT:
 330                 error("no card there");
 331                 blockNext = TRUE;
 332                 break;
 333         }
 334         if (pp == &Player[PLAYER])
 335                 account(card);
 336         pp->hand[Card_no] = C_INIT;
 337         Next = !blockNext;
 338         return TRUE;
 339 }
 340
 341 static void
 342 getmove(void)
 343 {
 344         char    c;
 345 #ifdef DEBUG
 346         char    *sp;
 347 #endif
 348 #ifdef EXTRAP
 349         static bool     last_ex = FALSE;        /* set if last command was E */
 350
 351         if (last_ex) {
 352                 undoex();
 353                 prboard();
 354                 last_ex = FALSE;
 355         }
 356 #endif
 357         for (;;) {
 358                 prompt(MOVEPROMPT);
 359                 leaveok(Board, FALSE);
 360                 refresh();
 361                 while ((c = readch()) == killchar() || c == erasechar())
 362                         continue;
 363                 if (islower(c))
 364                         c = toupper(c);
 365                 if (isprint(c) && !isspace(c)) {
 366                         addch(c);
 367                         refresh();
 368                 }
 369                 switch (c) {
 370                   case 'P':             /* Pick */
 371                         Movetype = M_DRAW;
 372                         goto ret;
 373                   case 'U':             /* Use Card */
 374                   case 'D':             /* Discard Card */
 375                         if ((Card_no = getcard()) < 0)
 376                                 break;
 377                         Movetype = (c == 'U' ? M_PLAY : M_DISCARD);
 378                         goto ret;
 379                   case 'O':             /* Order */
 380                         Order = !Order;
 381                         if (Window == W_SMALL) {
 382                                 if (!Order)
 383                                         mvwaddstr(Score, 12, 21,
 384                                                   "o: order hand");
 385                                 else
 386                                         mvwaddstr(Score, 12, 21,
 387                                                   "o: stop ordering");
 388                                 wclrtoeol(Score);
 389                         }
 390                         Movetype = M_ORDER;
 391                         goto ret;
 392                   case 'Q':             /* Quit */
 393                         rub(0);         /* Same as a rubout */
 394                         break;
 395                   case 'W':             /* Window toggle */
 396                         Window = nextwin(Window);
 397                         newscore();
 398                         prscore(TRUE);
 399                         wrefresh(Score);
 400                         break;
 401                   case 'R':             /* Redraw screen */
 402                   case CTRL('L'):
 403                         wrefresh(curscr);
 404                         break;
 405                   case 'S':             /* Save game */
 406                         On_exit = FALSE;
 407                         save();
 408                         break;
 409                   case 'E':             /* Extrapolate */
 410 #ifdef EXTRAP
 411                         if (last_ex)
 412                                 break;
 413                         Finished = TRUE;
 414                         if (Window != W_FULL)
 415                                 newscore();
 416                         prscore(FALSE);
 417                         wrefresh(Score);
 418                         last_ex = TRUE;
 419                         Finished = FALSE;
 420 #else
 421                         error("%c: command not implemented", c);
 422 #endif
 423                         break;
 424                   case '\r':            /* Ignore RETURNs and   */
 425                   case '\n':            /* Line Feeds           */
 426                   case ' ':             /* Spaces               */
 427                   case '\0':            /* and nulls            */
 428                         break;
 429 #ifdef DEBUG
 430                   case 'Z':             /* Debug code */
 431                         if (!Debug && outf == NULL) {
 432                                 char    buf[MAXPATHLEN];
 433
 434                                 prompt(FILEPROMPT);
 435                                 leaveok(Board, FALSE);
 436                                 refresh();
 437                                 sp = buf;
 438                                 while ((*sp = readch()) != '\n') {
 439                                         if (*sp == killchar())
 440                                                 goto over;
 441                                         else if (*sp == erasechar()) {
 442                                                 if (--sp < buf)
 443                                                         sp = buf;
 444                                                 else {
 445                                                         addch('\b');
 446                                                         if (*sp < ' ')
 447                                                             addch('\b');
 448                                                         clrtoeol();
 449                                                 }
 450                                         }
 451                                         else
 452                                                 addstr(unctrl(*sp++));
 453                                         refresh();
 454                                 }
 455                                 *sp = '\0';
 456                                 leaveok(Board, TRUE);
 457                                 if ((outf = fopen(buf, "w")) == NULL)
 458                                         perror(buf);
 459                                 setbuf(outf, NULL);
 460                         }
 461                         Debug = !Debug;
 462                         break;
 463 #endif
 464                   default:
 465                         error("unknown command: %s", unctrl(c));
 466                         break;
 467                 }
 468         }
 469 ret:
 470         leaveok(Board, TRUE);
 471 }
 472
 473 /*
 474  * return whether or not the player has picked
 475  */
 476 static int
 477 haspicked(PLAY *pp)
 478 {
 479         int     card;
 480
 481         if (Topcard <= Deck)
 482                 return TRUE;
 483         switch (pp->hand[Card_no]) {
 484           case C_GAS_SAFE:      case C_SPARE_SAFE:
 485           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
 486                 card = 1;
 487                 break;
 488           default:
 489                 card = 0;
 490                 break;
 491         }
 492         return (pp->hand[card] != C_INIT);
 493 }
 494
 495 void
 496 account(CARD card)
 497 {
 498         CARD    oppos;
 499
 500         if (card == C_INIT)
 501                 return;
 502         ++Numseen[card];
 503         if (Play == COMP)
 504                 switch (card) {
 505                   case C_GAS_SAFE:
 506                   case C_SPARE_SAFE:
 507                   case C_DRIVE_SAFE:
 508                         oppos = opposite(card);
 509                         Numgos += Numcards[oppos] - Numseen[oppos];
 510                         break;
 511                   case C_CRASH:
 512                   case C_FLAT:
 513                   case C_EMPTY:
 514                   case C_STOP:
 515                         Numgos++;
 516                         break;
 517                 }
 518 }
 519
 520 void
 521 prompt(int promptno)
 522 {
 523         static const char       *names[] = {
 524                                 ">>:Move:",
 525                                 "Really?",
 526                                 "Another hand?",
 527                                 "Another game?",
 528                                 "Save game?",
 529                                 "Same file?",
 530                                 "file:",
 531                                 "Extension?",
 532                                 "Overwrite file?",
 533                         };
 534         static int      last_prompt = -1;
 535
 536         if (promptno == last_prompt)
 537                 move(MOVE_Y, MOVE_X + strlen(names[promptno]) + 1);
 538         else {
 539                 move(MOVE_Y, MOVE_X);
 540                 if (promptno == MOVEPROMPT)
 541                         standout();
 542                 addstr(names[promptno]);
 543                 if (promptno == MOVEPROMPT)
 544                         standend();
 545                 addch(' ');
 546                 last_prompt = promptno;
 547         }
 548         clrtoeol();
 549 }
 550
 551 void
 552 sort(CARD *hand)
 553 {
 554         CARD    *cp, *tp;
 555         CARD    temp;
 556
 557         cp = hand;
 558         hand += HAND_SZ;
 559         for ( ; cp < &hand[-1]; cp++)
 560                 for (tp = cp + 1; tp < hand; tp++)
 561                         if (*cp > *tp) {
 562                                 temp = *cp;
 563                                 *cp = *tp;
 564                                 *tp = temp;
 565                         }
 566 }