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NetBSD/games/cribbage/crib.c

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/* $NetBSD: crib.c,v 1.25 2012/10/13 20:36:06 dholland Exp $ */
/*-
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)crib.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: crib.c,v 1.25 2012/10/13 20:36:06 dholland Exp $");
#endif
#endif /* not lint */
#include <curses.h>
#include <err.h>
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "deck.h"
#include "cribbage.h"
#include "cribcur.h"
#include "pathnames.h"
static void makeboard(void);
static void gamescore(void);
static void game(void);
static int playhand(BOOLEAN);
static int deal(BOOLEAN);
static void discard(BOOLEAN);
static int cut(BOOLEAN, int);
static void prcrib(BOOLEAN, BOOLEAN);
static int peg(BOOLEAN);
static void prtable(int);
static int score(BOOLEAN);
int
main(int argc, char *argv[])
{
BOOLEAN playing;
FILE *f;
int ch;
int fd;
int flags;
f = fopen(_PATH_LOG, "a");
if (f == NULL)
warn("fopen %s", _PATH_LOG);
if (f != NULL && fileno(f) < 3)
exit(1);
/* Revoke setgid privileges */
setgid(getgid());
/* Set close-on-exec flag on log file */
if (f != NULL) {
fd = fileno(f);
flags = fcntl(fd, F_GETFD);
if (flags < 0)
err(1, "fcntl F_GETFD");
flags |= FD_CLOEXEC;
if (fcntl(fd, F_SETFD, flags) == -1)
err(1, "fcntl F_SETFD");
}
while ((ch = getopt(argc, argv, "eqr")) != -1)
switch (ch) {
case 'e':
explain = TRUE;
break;
case 'q':
quiet = TRUE;
break;
case 'r':
rflag = TRUE;
break;
case '?':
default:
(void) fprintf(stderr, "usage: cribbage [-eqr]\n");
exit(1);
}
if (!initscr())
errx(0, "couldn't initialize screen");
(void)signal(SIGINT, receive_intr);
cbreak();
noecho();
Playwin = subwin(stdscr, PLAY_Y, PLAY_X, 0, 0);
Tablewin = subwin(stdscr, TABLE_Y, TABLE_X, 0, PLAY_X);
Compwin = subwin(stdscr, COMP_Y, COMP_X, 0, TABLE_X + PLAY_X);
Msgwin = subwin(stdscr, MSG_Y, MSG_X, Y_MSG_START, SCORE_X + 1);
leaveok(Playwin, TRUE);
leaveok(Tablewin, TRUE);
leaveok(Compwin, TRUE);
clearok(stdscr, FALSE);
if (!quiet) {
msg("Do you need instructions for cribbage? ");
if (getuchar() == 'Y') {
endwin();
clear();
mvcur(0, COLS - 1, LINES - 1, 0);
fflush(stdout);
instructions();
cbreak();
noecho();
clear();
refresh();
msg("For cribbage rules, use \"man cribbage\"");
}
}
playing = TRUE;
do {
wclrtobot(Msgwin);
msg(quiet ? "L or S? " : "Long (to 121) or Short (to 61)? ");
if (glimit == SGAME)
glimit = (getuchar() == 'L' ? LGAME : SGAME);
else
glimit = (getuchar() == 'S' ? SGAME : LGAME);
game();
msg("Another game? ");
playing = (getuchar() == 'Y');
} while (playing);
if (f != NULL) {
(void)fprintf(f, "%s: won %5.5d, lost %5.5d\n",
getlogin(), cgames, pgames);
(void) fclose(f);
}
bye();
exit(0);
}
/*
* makeboard:
* Print out the initial board on the screen
*/
static void
makeboard(void)
{
mvaddstr(SCORE_Y + 0, SCORE_X,
"+---------------------------------------+");
mvaddstr(SCORE_Y + 1, SCORE_X,
"| Score: 0 YOU |");
mvaddstr(SCORE_Y + 2, SCORE_X,
"| *.....:.....:.....:.....:.....:..... |");
mvaddstr(SCORE_Y + 3, SCORE_X,
"| *.....:.....:.....:.....:.....:..... |");
mvaddstr(SCORE_Y + 4, SCORE_X,
"| |");
mvaddstr(SCORE_Y + 5, SCORE_X,
"| *.....:.....:.....:.....:.....:..... |");
mvaddstr(SCORE_Y + 6, SCORE_X,
"| *.....:.....:.....:.....:.....:..... |");
mvaddstr(SCORE_Y + 7, SCORE_X,
"| Score: 0 ME |");
mvaddstr(SCORE_Y + 8, SCORE_X,
"+---------------------------------------+");
gamescore();
}
/*
* gamescore:
* Print out the current game score
*/
static void
gamescore(void)
{
if (pgames || cgames) {
mvprintw(SCORE_Y + 1, SCORE_X + 28, "Games: %3d", pgames);
mvprintw(SCORE_Y + 7, SCORE_X + 28, "Games: %3d", cgames);
}
Lastscore[0] = -1;
Lastscore[1] = -1;
}
/*
* game:
* Play one game up to glimit points. Actually, we only ASK the
* player what card to turn. We do a random one, anyway.
*/
static void
game(void)
{
int i, j;
BOOLEAN flag;
BOOLEAN compcrib;
compcrib = FALSE;
makedeck(deck);
shuffle(deck);
if (gamecount == 0) {
flag = TRUE;
do {
if (!rflag) { /* player cuts deck */
msg(quiet ? "Cut for crib? " :
"Cut to see whose crib it is -- low card wins? ");
get_line();
}
i = (rand() >> 4) % CARDS; /* random cut */
do { /* comp cuts deck */
j = (rand() >> 4) % CARDS;
} while (j == i);
addmsg(quiet ? "You cut " : "You cut the ");
msgcard(deck[i], FALSE);
endmsg();
addmsg(quiet ? "I cut " : "I cut the ");
msgcard(deck[j], FALSE);
endmsg();
flag = (deck[i].rank == deck[j].rank);
if (flag) {
msg(quiet ? "We tied..." :
"We tied and have to try again...");
shuffle(deck);
continue;
} else
compcrib = (deck[i].rank > deck[j].rank);
} while (flag);
do_wait();
clear();
makeboard();
refresh();
} else {
makeboard();
refresh();
werase(Tablewin);
wrefresh(Tablewin);
werase(Compwin);
wrefresh(Compwin);
msg("Loser (%s) gets first crib", (iwon ? "you" : "me"));
compcrib = !iwon;
}
pscore = cscore = 0;
flag = TRUE;
do {
shuffle(deck);
flag = !playhand(compcrib);
compcrib = !compcrib;
} while (flag);
++gamecount;
if (cscore < pscore) {
if (glimit - cscore > 60) {
msg("YOU DOUBLE SKUNKED ME!");
pgames += 4;
} else
if (glimit - cscore > 30) {
msg("YOU SKUNKED ME!");
pgames += 2;
} else {
msg("YOU WON!");
++pgames;
}
iwon = FALSE;
} else {
if (glimit - pscore > 60) {
msg("I DOUBLE SKUNKED YOU!");
cgames += 4;
} else
if (glimit - pscore > 30) {
msg("I SKUNKED YOU!");
cgames += 2;
} else {
msg("I WON!");
++cgames;
}
iwon = TRUE;
}
gamescore();
}
/*
* playhand:
* Do up one hand of the game
*/
static int
playhand(BOOLEAN mycrib)
{
int deckpos;
werase(Compwin);
wrefresh(Compwin);
werase(Tablewin);
wrefresh(Tablewin);
knownum = 0;
deckpos = deal(mycrib);
sorthand(chand, FULLHAND);
sorthand(phand, FULLHAND);
makeknown(chand, FULLHAND);
prhand(phand, FULLHAND, Playwin, FALSE);
discard(mycrib);
if (cut(mycrib, deckpos))
return TRUE;
if (peg(mycrib))
return TRUE;
werase(Tablewin);
wrefresh(Tablewin);
if (score(mycrib))
return TRUE;
return FALSE;
}
/*
* deal cards to both players from deck
*/
static int
deal(BOOLEAN mycrib)
{
int i, j;
for (i = j = 0; i < FULLHAND; i++) {
if (mycrib) {
phand[i] = deck[j++];
chand[i] = deck[j++];
} else {
chand[i] = deck[j++];
phand[i] = deck[j++];
}
}
return (j);
}
/*
* discard:
* Handle players discarding into the crib...
* Note: we call cdiscard() after prining first message so player doesn't wait
*/
static void
discard(BOOLEAN mycrib)
{
const char *prompt;
CARD crd;
prcrib(mycrib, TRUE);
prompt = (quiet ? "Discard --> " : "Discard a card --> ");
cdiscard(mycrib); /* puts best discard at end */
crd = phand[infrom(phand, FULLHAND, prompt)];
cremove(crd, phand, FULLHAND);
prhand(phand, FULLHAND, Playwin, FALSE);
crib[0] = crd;
/* Next four lines same as last four except for cdiscard(). */
crd = phand[infrom(phand, FULLHAND - 1, prompt)];
cremove(crd, phand, FULLHAND - 1);
prhand(phand, FULLHAND, Playwin, FALSE);
crib[1] = crd;
crib[2] = chand[4];
crib[3] = chand[5];
chand[4].rank = chand[4].suit = chand[5].rank = chand[5].suit = EMPTY;
}
/*
* cut:
* Cut the deck and set turnover. Actually, we only ASK the
* player what card to turn. We do a random one, anyway.
*/
static int
cut(BOOLEAN mycrib, int pos)
{
int i;
BOOLEAN win;
win = FALSE;
if (mycrib) {
if (!rflag) { /* random cut */
msg(quiet ? "Cut the deck? " :
"How many cards down do you wish to cut the deck? ");
get_line();
}
i = (rand() >> 4) % (CARDS - pos);
turnover = deck[i + pos];
addmsg(quiet ? "You cut " : "You cut the ");
msgcard(turnover, FALSE);
endmsg();
if (turnover.rank == JACK) {
msg("I get two for his heels");
win = chkscr(&cscore, 2);
}
} else {
i = (rand() >> 4) % (CARDS - pos) + pos;
turnover = deck[i];
addmsg(quiet ? "I cut " : "I cut the ");
msgcard(turnover, FALSE);
endmsg();
if (turnover.rank == JACK) {
msg("You get two for his heels");
win = chkscr(&pscore, 2);
}
}
makeknown(&turnover, 1);
prcrib(mycrib, FALSE);
return (win);
}
/*
* prcrib:
* Print out the turnover card with crib indicator
*/
static void
prcrib(BOOLEAN mycrib, BOOLEAN blank)
{
int y, cardx;
if (mycrib)
cardx = CRIB_X;
else
cardx = 0;
mvaddstr(CRIB_Y, cardx + 1, "CRIB");
prcard(stdscr, CRIB_Y + 1, cardx, turnover, blank);
if (mycrib)
cardx = 0;
else
cardx = CRIB_X;
for (y = CRIB_Y; y <= CRIB_Y + 5; y++)
mvaddstr(y, cardx, " ");
refresh();
}
/*
* peg:
* Handle all the pegging...
*/
static CARD Table[14];
static unsigned Tcnt;
static int
peg(BOOLEAN mycrib)
{
static CARD ch[CINHAND], ph[CINHAND];
int i, j, k;
int l;
int cnum, pnum, sum;
BOOLEAN myturn, mego, ugo, last, played;
CARD crd;
played = FALSE;
cnum = pnum = CINHAND;
for (i = 0; i < CINHAND; i++) { /* make copies of hands */
ch[i] = chand[i];
ph[i] = phand[i];
}
Tcnt = 0; /* index to table of cards played */
sum = 0; /* sum of cards played */
mego = ugo = FALSE;
myturn = !mycrib;
for (;;) {
last = TRUE; /* enable last flag */
prhand(ph, pnum, Playwin, FALSE);
prhand(ch, cnum, Compwin, TRUE);
prtable(sum);
if (myturn) { /* my tyrn to play */
if (!anymove(ch, cnum, sum)) { /* if no card to play */
if (!mego && cnum) { /* go for comp? */
msg("GO");
mego = TRUE;
}
/* can player move? */
if (anymove(ph, pnum, sum))
myturn = !myturn;
else { /* give him his point */
msg(quiet ? "You get one" :
"You get one point");
do_wait();
if (chkscr(&pscore, 1))
return TRUE;
sum = 0;
mego = ugo = FALSE;
Tcnt = 0;
}
} else {
played = TRUE;
j = -1;
k = 0;
/* maximize score */
for (i = 0; i < cnum; i++) {
l = pegscore(ch[i], Table, Tcnt, sum);
if (l > k) {
k = l;
j = i;
}
}
if (j < 0) /* if nothing scores */
j = cchose(ch, cnum, sum);
crd = ch[j];
cremove(crd, ch, cnum--);
sum += VAL(crd.rank);
Table[Tcnt++] = crd;
if (k > 0) {
addmsg(quiet ? "I get %d playing " :
"I get %d points playing ", k);
msgcard(crd, FALSE);
endmsg();
if (chkscr(&cscore, k))
return TRUE;
}
myturn = !myturn;
}
} else {
if (!anymove(ph, pnum, sum)) { /* can player move? */
if (!ugo && pnum) { /* go for player */
msg("You have a GO");
ugo = TRUE;
}
/* can computer play? */
if (anymove(ch, cnum, sum))
myturn = !myturn;
else {
msg(quiet ? "I get one" :
"I get one point");
do_wait();
if (chkscr(&cscore, 1))
return TRUE;
sum = 0;
mego = ugo = FALSE;
Tcnt = 0;
}
} else { /* player plays */
played = FALSE;
if (pnum == 1) {
crd = ph[0];
msg("You play your last card");
} else
for (;;) {
prhand(ph,
pnum, Playwin, FALSE);
crd = ph[infrom(ph,
pnum, "Your play: ")];
if (sum + VAL(crd.rank) <= 31)
break;
else
msg("Total > 31 -- try again");
}
makeknown(&crd, 1);
cremove(crd, ph, pnum--);
i = pegscore(crd, Table, Tcnt, sum);
sum += VAL(crd.rank);
Table[Tcnt++] = crd;
if (i > 0) {
msg(quiet ? "You got %d" :
"You got %d points", i);
if (pnum == 0)
do_wait();
if (chkscr(&pscore, i))
return TRUE;
}
myturn = !myturn;
}
}
if (sum >= 31) {
if (!myturn)
do_wait();
sum = 0;
mego = ugo = FALSE;
Tcnt = 0;
last = FALSE; /* disable last flag */
}
if (!pnum && !cnum)
break; /* both done */
}
prhand(ph, pnum, Playwin, FALSE);
prhand(ch, cnum, Compwin, TRUE);
prtable(sum);
if (last) {
if (played) {
msg(quiet ? "I get one for last" :
"I get one point for last");
do_wait();
if (chkscr(&cscore, 1))
return TRUE;
} else {
msg(quiet ? "You get one for last" :
"You get one point for last");
do_wait();
if (chkscr(&pscore, 1))
return TRUE;
}
}
return (FALSE);
}
/*
* prtable:
* Print out the table with the current score
*/
static void
prtable(int curscore)
{
prhand(Table, Tcnt, Tablewin, FALSE);
mvwprintw(Tablewin, (Tcnt + 2) * 2, Tcnt + 1, "%2d", curscore);
wrefresh(Tablewin);
}
/*
* score:
* Handle the scoring of the hands
*/
static int
score(BOOLEAN mycrib)
{
sorthand(crib, CINHAND);
if (mycrib) {
if (plyrhand(phand, "hand"))
return (TRUE);
if (comphand(chand, "hand"))
return (TRUE);
do_wait();
if (comphand(crib, "crib"))
return (TRUE);
do_wait();
} else {
if (comphand(chand, "hand"))
return (TRUE);
if (plyrhand(phand, "hand"))
return (TRUE);
if (plyrhand(crib, "crib"))
return (TRUE);
}
return (FALSE);
}
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