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move.c revision 1.14
      1 /*	$NetBSD: move.c,v 1.14 2004/04/06 19:15:07 jdc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)move.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: move.c,v 1.14 2004/04/06 19:15:07 jdc Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <termios.h>
     42 
     43 #ifdef DEBUG
     44 #include <sys/param.h>
     45 #endif
     46 
     47 #include	"mille.h"
     48 #ifndef	unctrl
     49 #include	"unctrl.h"
     50 #endif
     51 
     52 /*
     53  * @(#)move.c	1.2 (Berkeley) 3/28/83
     54  */
     55 
     56 #undef	CTRL
     57 #define	CTRL(c)		(c - 'A' + 1)
     58 
     59 void
     60 domove()
     61 {
     62 	PLAY	*pp;
     63 	int	i, j;
     64 	bool	goodplay;
     65 
     66 	pp = &Player[Play];
     67 	for (i = 0, j = 0; i < HAND_SZ; i++)
     68 		if (pp->hand[i] != -1)
     69 			j++;
     70 	if (!j) {
     71 		nextplay();
     72 		return;
     73 	}
     74 	if (Play == PLAYER)
     75 		getmove();
     76 	else
     77 		calcmove();
     78 	Next = FALSE;
     79 	goodplay = TRUE;
     80 	switch (Movetype) {
     81 	  case M_DISCARD:
     82 		if (haspicked(pp)) {
     83 			if (pp->hand[Card_no] == C_INIT)
     84 				if (Card_no == 6)
     85 					Finished = TRUE;
     86 				else
     87 					error("no card there");
     88 			else {
     89 				if (is_safety(pp->hand[Card_no])) {
     90 					error("discard a safety?");
     91 					goodplay = FALSE;
     92 					break;
     93 				}
     94 				Discard = pp->hand[Card_no];
     95 				pp->hand[Card_no] = C_INIT;
     96 				Next = TRUE;
     97 				if (Play == PLAYER)
     98 					account(Discard);
     99 			}
    100 		}
    101 		else
    102 			error("must pick first");
    103 		break;
    104 	  case M_PLAY:
    105 		goodplay = playcard(pp);
    106 		break;
    107 	  case M_DRAW:
    108 		Card_no = 0;
    109 		if (Topcard <= Deck)
    110 			error("no more cards");
    111 		else if (haspicked(pp))
    112 			error("already picked");
    113 		else {
    114 			pp->hand[0] = *--Topcard;
    115 #ifdef DEBUG
    116 			if (Debug)
    117 				fprintf(outf, "DOMOVE: Draw %s\n", C_name[*Topcard]);
    118 #endif
    119 acc:
    120 			if (Play == COMP) {
    121 				account(*Topcard);
    122 				if (is_safety(*Topcard))
    123 					pp->safety[*Topcard-S_CONV] = S_IN_HAND;
    124 			}
    125 			if (pp->hand[1] == C_INIT && Topcard > Deck) {
    126 				Card_no = 1;
    127 				pp->hand[1] = *--Topcard;
    128 #ifdef DEBUG
    129 				if (Debug)
    130 					fprintf(outf, "DOMOVE: Draw %s\n", C_name[*Topcard]);
    131 #endif
    132 				goto acc;
    133 			}
    134 			pp->new_battle = FALSE;
    135 			pp->new_speed = FALSE;
    136 		}
    137 		break;
    138 
    139 	  case M_ORDER:
    140 		break;
    141 	}
    142 	/*
    143 	 * move blank card to top by one of two methods.  If the
    144 	 * computer's hand was sorted, the randomness for picking
    145 	 * between equally valued cards would be lost
    146 	 */
    147 	if (Order && Movetype != M_DRAW && goodplay && pp == &Player[PLAYER])
    148 		sort(pp->hand);
    149 	else
    150 		for (i = 1; i < HAND_SZ; i++)
    151 			if (pp->hand[i] == C_INIT) {
    152 				for (j = 0; pp->hand[j] == C_INIT; j++)
    153 					if (j >= HAND_SZ) {
    154 						j = 0;
    155 						break;
    156 					}
    157 				pp->hand[i] = pp->hand[j];
    158 				pp->hand[j] = C_INIT;
    159 			}
    160 	if (Topcard <= Deck)
    161 		check_go();
    162 	if (Next)
    163 		nextplay();
    164 }
    165 
    166 /*
    167  *	Check and see if either side can go.  If they cannot,
    168  * the game is over
    169  */
    170 void
    171 check_go()
    172 {
    173 	CARD	card;
    174 	PLAY	*pp, *op;
    175 	int	i;
    176 
    177 	for (pp = Player; pp < &Player[2]; pp++) {
    178 		op = (pp == &Player[COMP] ? &Player[PLAYER] : &Player[COMP]);
    179 		for (i = 0; i < HAND_SZ; i++) {
    180 			card = pp->hand[i];
    181 			if (is_safety(card) || canplay(pp, op, card)) {
    182 #ifdef DEBUG
    183 				if (Debug) {
    184 					fprintf(outf, "CHECK_GO: can play %s (%d), ", C_name[card], card);
    185 					fprintf(outf, "is_safety(card) = %d, ", is_safety(card));
    186 					fprintf(outf, "canplay(pp, op, card) = %d\n", canplay(pp, op, card));
    187 				}
    188 #endif
    189 				return;
    190 			}
    191 #ifdef DEBUG
    192 			else if (Debug)
    193 				fprintf(outf, "CHECK_GO: cannot play %s\n",
    194 				    C_name[card]);
    195 #endif
    196 		}
    197 	}
    198 	Finished = TRUE;
    199 }
    200 
    201 int
    202 playcard(pp)
    203 	PLAY	*pp;
    204 {
    205 	int	v;
    206 	CARD	card;
    207 
    208 	/*
    209 	 * check and see if player has picked
    210 	 */
    211 	switch (pp->hand[Card_no]) {
    212 	  default:
    213 		if (!haspicked(pp))
    214 mustpick:
    215 			return error("must pick first");
    216 	  case C_GAS_SAFE:	case C_SPARE_SAFE:
    217 	  case C_DRIVE_SAFE:	case C_RIGHT_WAY:
    218 		break;
    219 	}
    220 
    221 	card = pp->hand[Card_no];
    222 #ifdef DEBUG
    223 	if (Debug)
    224 		fprintf(outf, "PLAYCARD: Card = %s\n", C_name[card]);
    225 #endif
    226 	Next = FALSE;
    227 	switch (card) {
    228 	  case C_200:
    229 		if (pp->nummiles[C_200] == 2)
    230 			return error("only two 200's per hand");
    231 	  case C_100:	case C_75:
    232 		if (pp->speed == C_LIMIT)
    233 			return error("limit of 50");
    234 	  case C_50:
    235 		if (pp->mileage + Value[card] > End)
    236 			return error("puts you over %d", End);
    237 	  case C_25:
    238 		if (!pp->can_go)
    239 			return error("cannot move now");
    240 		pp->nummiles[card]++;
    241 		v = Value[card];
    242 		pp->total += v;
    243 		pp->hand_tot += v;
    244 		if ((pp->mileage += v) == End)
    245 			check_ext(FALSE);
    246 		break;
    247 
    248 	  case C_GAS:	case C_SPARE:	case C_REPAIRS:
    249 		if (pp->battle != opposite(card))
    250 			return error("can't play \"%s\"", C_name[card]);
    251 		pp->battle = card;
    252 		if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
    253 			pp->can_go = TRUE;
    254 		break;
    255 
    256 	  case C_GO:
    257 		if (pp->battle != C_INIT && pp->battle != C_STOP
    258 		    && !is_repair(pp->battle))
    259 			return error("cannot play \"Go\" on a \"%s\"",
    260 			    C_name[pp->battle]);
    261 		pp->battle = C_GO;
    262 		pp->can_go = TRUE;
    263 		break;
    264 
    265 	  case C_END_LIMIT:
    266 		if (pp->speed != C_LIMIT)
    267 			return error("not limited");
    268 		pp->speed = C_END_LIMIT;
    269 		break;
    270 
    271 	  case C_EMPTY:	case C_FLAT:	case C_CRASH:
    272 	  case C_STOP:
    273 		pp = &Player[other(Play)];
    274 		if (!pp->can_go)
    275 			return error("opponent cannot go");
    276 		else if (pp->safety[safety(card) - S_CONV] == S_PLAYED)
    277 protected:
    278 			return error("opponent is protected");
    279 		pp->battle = card;
    280 		pp->new_battle = TRUE;
    281 		pp->can_go = FALSE;
    282 		pp = &Player[Play];
    283 		break;
    284 
    285 	  case C_LIMIT:
    286 		pp = &Player[other(Play)];
    287 		if (pp->speed == C_LIMIT)
    288 			return error("opponent has limit");
    289 		if (pp->safety[S_RIGHT_WAY] == S_PLAYED)
    290 			goto protected;
    291 		pp->speed = C_LIMIT;
    292 		pp->new_speed = TRUE;
    293 		pp = &Player[Play];
    294 		break;
    295 
    296 	  case C_GAS_SAFE:	case C_SPARE_SAFE:
    297 	  case C_DRIVE_SAFE:	case C_RIGHT_WAY:
    298 		if (pp->battle == opposite(card)
    299 		    || (card == C_RIGHT_WAY && pp->speed == C_LIMIT)) {
    300 			if (!(card == C_RIGHT_WAY && !is_repair(pp->battle))) {
    301 				pp->battle = C_GO;
    302 				pp->can_go = TRUE;
    303 			}
    304 			if (card == C_RIGHT_WAY && pp->speed == C_LIMIT)
    305 				pp->speed = C_INIT;
    306 			if (pp->new_battle
    307 			    || (pp->new_speed && card == C_RIGHT_WAY)) {
    308 				pp->coups[card - S_CONV] = TRUE;
    309 				pp->total += SC_COUP;
    310 				pp->hand_tot += SC_COUP;
    311 				pp->coupscore += SC_COUP;
    312 			}
    313 		}
    314 		/*
    315 		 * if not coup, must pick first
    316 		 */
    317 		else if (pp->hand[0] == C_INIT && Topcard > Deck)
    318 			goto mustpick;
    319 		pp->safety[card - S_CONV] = S_PLAYED;
    320 		pp->total += SC_SAFETY;
    321 		pp->hand_tot += SC_SAFETY;
    322 		if ((pp->safescore += SC_SAFETY) == NUM_SAFE * SC_SAFETY) {
    323 			pp->total += SC_ALL_SAFE;
    324 			pp->hand_tot += SC_ALL_SAFE;
    325 		}
    326 		if (card == C_RIGHT_WAY) {
    327 			if (pp->speed == C_LIMIT)
    328 				pp->speed = C_INIT;
    329 			if (pp->battle == C_STOP || pp->battle == C_INIT) {
    330 				pp->can_go = TRUE;
    331 				pp->battle = C_INIT;
    332 			}
    333 			if (!pp->can_go && is_repair(pp->battle))
    334 				pp->can_go = TRUE;
    335 		}
    336 		Next = -1;
    337 		break;
    338 
    339 	  case C_INIT:
    340 		error("no card there");
    341 		Next = -1;
    342 		break;
    343 	}
    344 	if (pp == &Player[PLAYER])
    345 		account(card);
    346 	pp->hand[Card_no] = C_INIT;
    347 	Next = (Next == (bool)-1 ? FALSE : TRUE);
    348 	return TRUE;
    349 }
    350 
    351 void
    352 getmove()
    353 {
    354 	char	c;
    355 #ifdef EXTRAP
    356 	static bool	last_ex = FALSE;	/* set if last command was E */
    357 
    358 	if (last_ex) {
    359 		undoex();
    360 		prboard();
    361 		last_ex = FALSE;
    362 	}
    363 #endif
    364 	for (;;) {
    365 		prompt(MOVEPROMPT);
    366 		leaveok(Board, FALSE);
    367 		refresh();
    368 		while ((c = readch()) == killchar() || c == erasechar())
    369 			continue;
    370 		if (islower(c))
    371 			c = toupper(c);
    372 		if (isprint(c) && !isspace(c)) {
    373 			addch(c);
    374 			refresh();
    375 		}
    376 		switch (c) {
    377 		  case 'P':		/* Pick */
    378 			Movetype = M_DRAW;
    379 			goto ret;
    380 		  case 'U':		/* Use Card */
    381 		  case 'D':		/* Discard Card */
    382 			if ((Card_no = getcard()) < 0)
    383 				break;
    384 			Movetype = (c == 'U' ? M_PLAY : M_DISCARD);
    385 			goto ret;
    386 		  case 'O':		/* Order */
    387 			Order = !Order;
    388 			if (Window == W_SMALL) {
    389 				if (!Order)
    390 					mvwaddstr(Score, 12, 21,
    391 						  "o: order hand");
    392 				else
    393 					mvwaddstr(Score, 12, 21,
    394 						  "o: stop ordering");
    395 				wclrtoeol(Score);
    396 			}
    397 			Movetype = M_ORDER;
    398 			goto ret;
    399 		  case 'Q':		/* Quit */
    400 			rub(0);		/* Same as a rubout */
    401 			break;
    402 		  case 'W':		/* Window toggle */
    403 			Window = nextwin(Window);
    404 			newscore();
    405 			prscore(TRUE);
    406 			wrefresh(Score);
    407 			break;
    408 		  case 'R':		/* Redraw screen */
    409 		  case CTRL('L'):
    410 			wrefresh(curscr);
    411 			break;
    412 		  case 'S':		/* Save game */
    413 			On_exit = FALSE;
    414 			save();
    415 			break;
    416 		  case 'E':		/* Extrapolate */
    417 #ifdef EXTRAP
    418 			if (last_ex)
    419 				break;
    420 			Finished = TRUE;
    421 			if (Window != W_FULL)
    422 				newscore();
    423 			prscore(FALSE);
    424 			wrefresh(Score);
    425 			last_ex = TRUE;
    426 			Finished = FALSE;
    427 #else
    428 			error("%c: command not implemented", c);
    429 #endif
    430 			break;
    431 		  case '\r':		/* Ignore RETURNs and	*/
    432 		  case '\n':		/* Line Feeds		*/
    433 		  case ' ':		/* Spaces		*/
    434 		  case '\0':		/* and nulls		*/
    435 			break;
    436 #ifdef DEBUG
    437 		  case 'Z':		/* Debug code */
    438 			if (!Debug && outf == NULL) {
    439 				char	buf[MAXPATHLEN];
    440 				char	*sp;
    441 
    442 				prompt(FILEPROMPT);
    443 				leaveok(Board, FALSE);
    444 				refresh();
    445 over:
    446 				sp = buf;
    447 				while ((*sp = readch()) != '\n') {
    448 					if (*sp == killchar())
    449 						goto over;
    450 					else if (*sp == erasechar()) {
    451 						if (--sp < buf)
    452 							sp = buf;
    453 						else {
    454 							addch('\b');
    455 							if (*sp < ' ')
    456 							    addch('\b');
    457 							clrtoeol();
    458 						}
    459 					}
    460 					else
    461 						addstr(unctrl(*sp++));
    462 					refresh();
    463 				}
    464 				*sp = '\0';
    465 				leaveok(Board, TRUE);
    466 				if ((outf = fopen(buf, "w")) == NULL)
    467 					warn("%s", buf);
    468 				setbuf(outf, (char *)NULL);
    469 			}
    470 			Debug = !Debug;
    471 			break;
    472 #endif
    473 		  default:
    474 			error("unknown command: %s", unctrl(c));
    475 			break;
    476 		}
    477 	}
    478 ret:
    479 	leaveok(Board, TRUE);
    480 }
    481 
    482 /*
    483  * return whether or not the player has picked
    484  */
    485 int
    486 haspicked(pp)
    487 	const PLAY	*pp;
    488 {
    489 	int	card;
    490 
    491 	if (Topcard <= Deck)
    492 		return TRUE;
    493 	switch (pp->hand[Card_no]) {
    494 	  case C_GAS_SAFE:	case C_SPARE_SAFE:
    495 	  case C_DRIVE_SAFE:	case C_RIGHT_WAY:
    496 		card = 1;
    497 		break;
    498 	  default:
    499 		card = 0;
    500 		break;
    501 	}
    502 	return (pp->hand[card] != C_INIT);
    503 }
    504 
    505 void
    506 account(card)
    507 	CARD	card;
    508 {
    509 	CARD	oppos;
    510 
    511 	if (card == C_INIT)
    512 		return;
    513 	++Numseen[card];
    514 	if (Play == COMP)
    515 		switch (card) {
    516 		  case C_GAS_SAFE:
    517 		  case C_SPARE_SAFE:
    518 		  case C_DRIVE_SAFE:
    519 			oppos = opposite(card);
    520 			Numgos += Numcards[oppos] - Numseen[oppos];
    521 			break;
    522 		  case C_CRASH:
    523 		  case C_FLAT:
    524 		  case C_EMPTY:
    525 		  case C_STOP:
    526 			Numgos++;
    527 			break;
    528 		}
    529 }
    530 
    531 void
    532 prompt(promptno)
    533 	int	promptno;
    534 {
    535 	static const char	*const names[] = {
    536 				">>:Move:",
    537 				"Really?",
    538 				"Another hand?",
    539 				"Another game?",
    540 				"Save game?",
    541 				"Same file?",
    542 				"file:",
    543 				"Extension?",
    544 				"Overwrite file?",
    545 			};
    546 	static int	last_prompt = -1;
    547 
    548 	if (promptno == last_prompt)
    549 		move(MOVE_Y, MOVE_X + strlen(names[promptno]) + 1);
    550 	else {
    551 		move(MOVE_Y, MOVE_X);
    552 		if (promptno == MOVEPROMPT)
    553 			standout();
    554 		addstr(names[promptno]);
    555 		if (promptno == MOVEPROMPT)
    556 			standend();
    557 		addch(' ');
    558 		last_prompt = promptno;
    559 	}
    560 	clrtoeol();
    561 }
    562 
    563 void
    564 sort(hand)
    565 	CARD	*hand;
    566 {
    567 	CARD	*cp, *tp;
    568 	CARD	temp;
    569 
    570 	cp = hand;
    571 	hand += HAND_SZ;
    572 	for ( ; cp < &hand[-1]; cp++)
    573 		for (tp = cp + 1; tp < hand; tp++)
    574 			if (*cp > *tp) {
    575 				temp = *cp;
    576 				*cp = *tp;
    577 				*tp = temp;
    578 			}
    579 }
    580