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