7581cc025601dc32290fa512f6d086d05a87b1e3
[dragonfly.git] / 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) {
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
197         /*
198          * check and see if player has picked
199          */
200         switch (pp->hand[Card_no]) {
201           default:
202                 if (!haspicked(pp))
203 mustpick:
204                         return error("must pick first");
205           case C_GAS_SAFE:      case C_SPARE_SAFE:
206           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
207                 break;
208         }
209
210         card = pp->hand[Card_no];
211 #ifdef DEBUG
212         if (Debug)
213                 fprintf(outf, "PLAYCARD: Card = %s\n", C_name[card]);
214 #endif
215         Next = FALSE;
216         switch (card) {
217           case C_200:
218                 if (pp->nummiles[C_200] == 2)
219                         return error("only two 200's per hand");
220           case C_100:   case C_75:
221                 if (pp->speed == C_LIMIT)
222                         return error("limit of 50");
223           case C_50:
224                 if (pp->mileage + Value[card] > End)
225                         return error("puts you over %d", End);
226           case C_25:
227                 if (!pp->can_go)
228                         return error("cannot move now");
229                 pp->nummiles[card]++;
230                 v = Value[card];
231                 pp->total += v;
232                 pp->hand_tot += v;
233                 if ((pp->mileage += v) == End)
234                         check_ext(FALSE);
235                 break;
236
237           case C_GAS:   case C_SPARE:   case C_REPAIRS:
238                 if (pp->battle != opposite(card))
239                         return error("can't play \"%s\"", C_name[card]);
240                 pp->battle = card;
241                 if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
242                         pp->can_go = TRUE;
243                 break;
244
245           case C_GO:
246                 if (pp->battle != C_INIT && pp->battle != C_STOP
247                     && !isrepair(pp->battle))
248                         return error("cannot play \"Go\" on a \"%s\"",
249                             C_name[pp->battle]);
250                 pp->battle = C_GO;
251                 pp->can_go = TRUE;
252                 break;
253
254           case C_END_LIMIT:
255                 if (pp->speed != C_LIMIT)
256                         return error("not limited");
257                 pp->speed = C_END_LIMIT;
258                 break;
259
260           case C_EMPTY: case C_FLAT:    case C_CRASH:
261           case C_STOP:
262                 pp = &Player[other(Play)];
263                 if (!pp->can_go)
264                         return error("opponent cannot go");
265                 else if (pp->safety[safety(card) - S_CONV] == S_PLAYED)
266 protected:
267                         return error("opponent is protected");
268                 pp->battle = card;
269                 pp->new_battle = TRUE;
270                 pp->can_go = FALSE;
271                 pp = &Player[Play];
272                 break;
273
274           case C_LIMIT:
275                 pp = &Player[other(Play)];
276                 if (pp->speed == C_LIMIT)
277                         return error("opponent has limit");
278                 if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
279                         goto protected;
280                 pp->speed = C_LIMIT;
281                 pp->new_speed = TRUE;
282                 pp = &Player[Play];
283                 break;
284
285           case C_GAS_SAFE:      case C_SPARE_SAFE:
286           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
287                 if (pp->battle == opposite(card)
288                     || (card == C_RIGHT_WAY && pp->speed == C_LIMIT)) {
289                         if (!(card == C_RIGHT_WAY && !isrepair(pp->battle))) {
290                                 pp->battle = C_GO;
291                                 pp->can_go = TRUE;
292                         }
293                         if (card == C_RIGHT_WAY && pp->speed == C_LIMIT)
294                                 pp->speed = C_INIT;
295                         if (pp->new_battle
296                             || (pp->new_speed && card == C_RIGHT_WAY)) {
297                                 pp->coups[card - S_CONV] = TRUE;
298                                 pp->total += SC_COUP;
299                                 pp->hand_tot += SC_COUP;
300                                 pp->coupscore += SC_COUP;
301                         }
302                 }
303                 /*
304                  * if not coup, must pick first
305                  */
306                 else if (pp->hand[0] == C_INIT && Topcard > Deck)
307                         goto mustpick;
308                 pp->safety[card - S_CONV] = S_PLAYED;
309                 pp->total += SC_SAFETY;
310                 pp->hand_tot += SC_SAFETY;
311                 if ((pp->safescore += SC_SAFETY) == NUM_SAFE * SC_SAFETY) {
312                         pp->total += SC_ALL_SAFE;
313                         pp->hand_tot += SC_ALL_SAFE;
314                 }
315                 if (card == C_RIGHT_WAY) {
316                         if (pp->speed == C_LIMIT)
317                                 pp->speed = C_INIT;
318                         if (pp->battle == C_STOP || pp->battle == C_INIT) {
319                                 pp->can_go = TRUE;
320                                 pp->battle = C_INIT;
321                         }
322                         if (!pp->can_go && isrepair(pp->battle))
323                                 pp->can_go = TRUE;
324                 }
325                 Next = -1;
326                 break;
327
328           case C_INIT:
329                 error("no card there");
330                 Next = -1;
331                 break;
332         }
333         if (pp == &Player[PLAYER])
334                 account(card);
335         pp->hand[Card_no] = C_INIT;
336         Next = (Next == -1 ? FALSE : TRUE);
337         return TRUE;
338 }
339
340 static void
341 getmove(void)
342 {
343         char    c;
344 #ifdef DEBUG
345         char    *sp;
346 #endif
347 #ifdef EXTRAP
348         static bool     last_ex = FALSE;        /* set if last command was E */
349
350         if (last_ex) {
351                 undoex();
352                 prboard();
353                 last_ex = FALSE;
354         }
355 #endif
356         for (;;) {
357                 prompt(MOVEPROMPT);
358                 leaveok(Board, FALSE);
359                 refresh();
360                 while ((c = readch()) == killchar() || c == erasechar())
361                         continue;
362                 if (islower(c))
363                         c = toupper(c);
364                 if (isprint(c) && !isspace(c)) {
365                         addch(c);
366                         refresh();
367                 }
368                 switch (c) {
369                   case 'P':             /* Pick */
370                         Movetype = M_DRAW;
371                         goto ret;
372                   case 'U':             /* Use Card */
373                   case 'D':             /* Discard Card */
374                         if ((Card_no = getcard()) < 0)
375                                 break;
376                         Movetype = (c == 'U' ? M_PLAY : M_DISCARD);
377                         goto ret;
378                   case 'O':             /* Order */
379                         Order = !Order;
380                         if (Window == W_SMALL) {
381                                 if (!Order)
382                                         mvwaddstr(Score, 12, 21,
383                                                   "o: order hand");
384                                 else
385                                         mvwaddstr(Score, 12, 21,
386                                                   "o: stop ordering");
387                                 wclrtoeol(Score);
388                         }
389                         Movetype = M_ORDER;
390                         goto ret;
391                   case 'Q':             /* Quit */
392                         rub(0);         /* Same as a rubout */
393                         break;
394                   case 'W':             /* Window toggle */
395                         Window = nextwin(Window);
396                         newscore();
397                         prscore(TRUE);
398                         wrefresh(Score);
399                         break;
400                   case 'R':             /* Redraw screen */
401                   case CTRL('L'):
402                         wrefresh(curscr);
403                         break;
404                   case 'S':             /* Save game */
405                         On_exit = FALSE;
406                         save();
407                         break;
408                   case 'E':             /* Extrapolate */
409 #ifdef EXTRAP
410                         if (last_ex)
411                                 break;
412                         Finished = TRUE;
413                         if (Window != W_FULL)
414                                 newscore();
415                         prscore(FALSE);
416                         wrefresh(Score);
417                         last_ex = TRUE;
418                         Finished = FALSE;
419 #else
420                         error("%c: command not implemented", c);
421 #endif
422                         break;
423                   case '\r':            /* Ignore RETURNs and   */
424                   case '\n':            /* Line Feeds           */
425                   case ' ':             /* Spaces               */
426                   case '\0':            /* and nulls            */
427                         break;
428 #ifdef DEBUG
429                   case 'Z':             /* Debug code */
430                         if (!Debug && outf == NULL) {
431                                 char    buf[MAXPATHLEN];
432
433                                 prompt(FILEPROMPT);
434                                 leaveok(Board, FALSE);
435                                 refresh();
436                                 sp = buf;
437                                 while ((*sp = readch()) != '\n') {
438                                         if (*sp == killchar())
439                                                 goto over;
440                                         else if (*sp == erasechar()) {
441                                                 if (--sp < buf)
442                                                         sp = buf;
443                                                 else {
444                                                         addch('\b');
445                                                         if (*sp < ' ')
446                                                             addch('\b');
447                                                         clrtoeol();
448                                                 }
449                                         }
450                                         else
451                                                 addstr(unctrl(*sp++));
452                                         refresh();
453                                 }
454                                 *sp = '\0';
455                                 leaveok(Board, TRUE);
456                                 if ((outf = fopen(buf, "w")) == NULL)
457                                         perror(buf);
458                                 setbuf(outf, NULL);
459                         }
460                         Debug = !Debug;
461                         break;
462 #endif
463                   default:
464                         error("unknown command: %s", unctrl(c));
465                         break;
466                 }
467         }
468 ret:
469         leaveok(Board, TRUE);
470 }
471
472 /*
473  * return whether or not the player has picked
474  */
475 static int
476 haspicked(PLAY *pp)
477 {
478         int     card;
479
480         if (Topcard <= Deck)
481                 return TRUE;
482         switch (pp->hand[Card_no]) {
483           case C_GAS_SAFE:      case C_SPARE_SAFE:
484           case C_DRIVE_SAFE:    case C_RIGHT_WAY:
485                 card = 1;
486                 break;
487           default:
488                 card = 0;
489                 break;
490         }
491         return (pp->hand[card] != C_INIT);
492 }
493
494 void
495 account(CARD card)
496 {
497         CARD    oppos;
498
499         if (card == C_INIT)
500                 return;
501         ++Numseen[card];
502         if (Play == COMP)
503                 switch (card) {
504                   case C_GAS_SAFE:
505                   case C_SPARE_SAFE:
506                   case C_DRIVE_SAFE:
507                         oppos = opposite(card);
508                         Numgos += Numcards[oppos] - Numseen[oppos];
509                         break;
510                   case C_CRASH:
511                   case C_FLAT:
512                   case C_EMPTY:
513                   case C_STOP:
514                         Numgos++;
515                         break;
516                 }
517 }
518
519 void
520 prompt(int promptno)
521 {
522         static const char       *names[] = {
523                                 ">>:Move:",
524                                 "Really?",
525                                 "Another hand?",
526                                 "Another game?",
527                                 "Save game?",
528                                 "Same file?",
529                                 "file:",
530                                 "Extension?",
531                                 "Overwrite file?",
532                         };
533         static int      last_prompt = -1;
534
535         if (promptno == last_prompt)
536                 move(MOVE_Y, MOVE_X + strlen(names[promptno]) + 1);
537         else {
538                 move(MOVE_Y, MOVE_X);
539                 if (promptno == MOVEPROMPT)
540                         standout();
541                 addstr(names[promptno]);
542                 if (promptno == MOVEPROMPT)
543                         standend();
544                 addch(' ');
545                 last_prompt = promptno;
546         }
547         clrtoeol();
548 }
549
550 void
551 sort(CARD *hand)
552 {
553         CARD    *cp, *tp;
554         CARD    temp;
555
556         cp = hand;
557         hand += HAND_SZ;
558         for ( ; cp < &hand[-1]; cp++)
559                 for (tp = cp + 1; tp < hand; tp++)
560                         if (*cp > *tp) {
561                                 temp = *cp;
562                                 *cp = *tp;
563                                 *tp = temp;
564                         }
565 }