5367f3400c
Games which run setgid from dm, but don't need to, should drop their privileges at startup. Games which have a scorefile should open it at startup, then drop all privileges leaving just the open writable file descriptor. If the game can invoke subprocesses, this should be made close-on-exec. Games with scorefiles should make sure they do not get a file descriptor < 3. (Otherwise, they could get confused and corrupt the scorefile when using stdin, stdout or stderr.) Some old setuid revokes from the days of setuid games change into gid revokes.
665 lines
14 KiB
C
665 lines
14 KiB
C
/* $NetBSD: crib.c,v 1.12 1999/09/12 09:02:21 jsm Exp $ */
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/*-
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)crib.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: crib.c,v 1.12 1999/09/12 09:02:21 jsm Exp $");
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#endif
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#endif /* not lint */
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#include <curses.h>
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#include <err.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "deck.h"
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#include "cribbage.h"
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#include "cribcur.h"
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#include "pathnames.h"
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int main __P((int, char *[]));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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BOOLEAN playing;
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FILE *f;
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int ch;
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int fd;
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int flags;
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f = fopen(_PATH_LOG, "a");
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if (f == NULL)
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warn("fopen %s", _PATH_LOG);
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if (f != NULL && fileno(f) < 3)
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exit(1);
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/* Revoke setgid privileges */
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setregid(getgid(), getgid());
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/* Set close-on-exec flag on log file */
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if (f != NULL) {
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fd = fileno(f);
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flags = fcntl(fd, F_GETFD);
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if (flags < 0)
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err(1, "fcntl F_GETFD");
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flags |= FD_CLOEXEC;
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if (fcntl(fd, F_SETFD, flags) == -1)
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err(1, "fcntl F_SETFD");
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}
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while ((ch = getopt(argc, argv, "eqr")) != -1)
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switch (ch) {
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case 'e':
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explain = TRUE;
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break;
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case 'q':
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quiet = TRUE;
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break;
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case 'r':
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rflag = TRUE;
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break;
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case '?':
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default:
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(void) fprintf(stderr, "usage: cribbage [-eqr]\n");
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exit(1);
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}
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initscr();
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(void)signal(SIGINT, rint);
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crmode();
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noecho();
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Playwin = subwin(stdscr, PLAY_Y, PLAY_X, 0, 0);
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Tablewin = subwin(stdscr, TABLE_Y, TABLE_X, 0, PLAY_X);
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Compwin = subwin(stdscr, COMP_Y, COMP_X, 0, TABLE_X + PLAY_X);
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Msgwin = subwin(stdscr, MSG_Y, MSG_X, Y_MSG_START, SCORE_X + 1);
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leaveok(Playwin, TRUE);
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leaveok(Tablewin, TRUE);
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leaveok(Compwin, TRUE);
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clearok(stdscr, FALSE);
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if (!quiet) {
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msg("Do you need instructions for cribbage? ");
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if (getuchar() == 'Y') {
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endwin();
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clear();
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mvcur(0, COLS - 1, LINES - 1, 0);
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fflush(stdout);
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instructions();
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crmode();
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noecho();
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clear();
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refresh();
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msg("For cribbage rules, use \"man cribbage\"");
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}
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}
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playing = TRUE;
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do {
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wclrtobot(Msgwin);
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msg(quiet ? "L or S? " : "Long (to 121) or Short (to 61)? ");
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if (glimit == SGAME)
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glimit = (getuchar() == 'L' ? LGAME : SGAME);
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else
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glimit = (getuchar() == 'S' ? SGAME : LGAME);
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game();
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msg("Another game? ");
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playing = (getuchar() == 'Y');
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} while (playing);
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if (f != NULL) {
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(void)fprintf(f, "%s: won %5.5d, lost %5.5d\n",
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getlogin(), cgames, pgames);
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(void) fclose(f);
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}
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bye();
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exit(0);
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}
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/*
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* makeboard:
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* Print out the initial board on the screen
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*/
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void
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makeboard()
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{
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mvaddstr(SCORE_Y + 0, SCORE_X,
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"+---------------------------------------+");
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mvaddstr(SCORE_Y + 1, SCORE_X,
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"| Score: 0 YOU |");
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mvaddstr(SCORE_Y + 2, SCORE_X,
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"| *.....:.....:.....:.....:.....:..... |");
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mvaddstr(SCORE_Y + 3, SCORE_X,
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"| *.....:.....:.....:.....:.....:..... |");
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mvaddstr(SCORE_Y + 4, SCORE_X,
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"| |");
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mvaddstr(SCORE_Y + 5, SCORE_X,
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"| *.....:.....:.....:.....:.....:..... |");
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mvaddstr(SCORE_Y + 6, SCORE_X,
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"| *.....:.....:.....:.....:.....:..... |");
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mvaddstr(SCORE_Y + 7, SCORE_X,
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"| Score: 0 ME |");
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mvaddstr(SCORE_Y + 8, SCORE_X,
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"+---------------------------------------+");
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gamescore();
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}
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/*
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* gamescore:
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* Print out the current game score
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*/
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void
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gamescore()
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{
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extern int Lastscore[];
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if (pgames || cgames) {
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mvprintw(SCORE_Y + 1, SCORE_X + 28, "Games: %3d", pgames);
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mvprintw(SCORE_Y + 7, SCORE_X + 28, "Games: %3d", cgames);
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}
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Lastscore[0] = -1;
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Lastscore[1] = -1;
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}
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/*
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* game:
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* Play one game up to glimit points. Actually, we only ASK the
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* player what card to turn. We do a random one, anyway.
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*/
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void
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game()
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{
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int i, j;
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BOOLEAN flag;
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BOOLEAN compcrib;
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compcrib = FALSE;
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makedeck(deck);
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shuffle(deck);
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if (gamecount == 0) {
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flag = TRUE;
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do {
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if (!rflag) { /* player cuts deck */
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msg(quiet ? "Cut for crib? " :
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"Cut to see whose crib it is -- low card wins? ");
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getline();
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}
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i = (rand() >> 4) % CARDS; /* random cut */
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do { /* comp cuts deck */
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j = (rand() >> 4) % CARDS;
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} while (j == i);
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addmsg(quiet ? "You cut " : "You cut the ");
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msgcard(deck[i], FALSE);
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endmsg();
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addmsg(quiet ? "I cut " : "I cut the ");
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msgcard(deck[j], FALSE);
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endmsg();
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flag = (deck[i].rank == deck[j].rank);
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if (flag) {
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msg(quiet ? "We tied..." :
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"We tied and have to try again...");
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shuffle(deck);
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continue;
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} else
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compcrib = (deck[i].rank > deck[j].rank);
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} while (flag);
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do_wait();
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clear();
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makeboard();
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refresh();
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} else {
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makeboard();
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refresh();
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werase(Tablewin);
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wrefresh(Tablewin);
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werase(Compwin);
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wrefresh(Compwin);
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msg("Loser (%s) gets first crib", (iwon ? "you" : "me"));
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compcrib = !iwon;
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}
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pscore = cscore = 0;
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flag = TRUE;
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do {
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shuffle(deck);
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flag = !playhand(compcrib);
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compcrib = !compcrib;
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} while (flag);
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++gamecount;
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if (cscore < pscore) {
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if (glimit - cscore > 60) {
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msg("YOU DOUBLE SKUNKED ME!");
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pgames += 4;
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} else
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if (glimit - cscore > 30) {
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msg("YOU SKUNKED ME!");
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pgames += 2;
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} else {
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msg("YOU WON!");
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++pgames;
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}
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iwon = FALSE;
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} else {
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if (glimit - pscore > 60) {
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msg("I DOUBLE SKUNKED YOU!");
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cgames += 4;
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} else
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if (glimit - pscore > 30) {
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msg("I SKUNKED YOU!");
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cgames += 2;
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} else {
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msg("I WON!");
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++cgames;
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}
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iwon = TRUE;
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}
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gamescore();
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}
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/*
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* playhand:
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* Do up one hand of the game
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*/
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int
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playhand(mycrib)
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BOOLEAN mycrib;
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{
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int deckpos;
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werase(Compwin);
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wrefresh(Compwin);
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werase(Tablewin);
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wrefresh(Tablewin);
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knownum = 0;
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deckpos = deal(mycrib);
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sorthand(chand, FULLHAND);
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sorthand(phand, FULLHAND);
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makeknown(chand, FULLHAND);
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prhand(phand, FULLHAND, Playwin, FALSE);
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discard(mycrib);
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if (cut(mycrib, deckpos))
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return TRUE;
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if (peg(mycrib))
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return TRUE;
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werase(Tablewin);
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wrefresh(Tablewin);
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if (score(mycrib))
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return TRUE;
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return FALSE;
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}
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/*
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* deal cards to both players from deck
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*/
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int
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deal(mycrib)
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BOOLEAN mycrib;
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{
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int i, j;
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for (i = j = 0; i < FULLHAND; i++) {
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if (mycrib) {
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phand[i] = deck[j++];
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chand[i] = deck[j++];
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} else {
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chand[i] = deck[j++];
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phand[i] = deck[j++];
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}
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}
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return (j);
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}
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/*
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* discard:
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* Handle players discarding into the crib...
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* Note: we call cdiscard() after prining first message so player doesn't wait
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*/
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void
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discard(mycrib)
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BOOLEAN mycrib;
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{
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const char *prompt;
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CARD crd;
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prcrib(mycrib, TRUE);
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prompt = (quiet ? "Discard --> " : "Discard a card --> ");
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cdiscard(mycrib); /* puts best discard at end */
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crd = phand[infrom(phand, FULLHAND, prompt)];
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cremove(crd, phand, FULLHAND);
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prhand(phand, FULLHAND, Playwin, FALSE);
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crib[0] = crd;
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/* Next four lines same as last four except for cdiscard(). */
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crd = phand[infrom(phand, FULLHAND - 1, prompt)];
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cremove(crd, phand, FULLHAND - 1);
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prhand(phand, FULLHAND, Playwin, FALSE);
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crib[1] = crd;
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crib[2] = chand[4];
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crib[3] = chand[5];
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chand[4].rank = chand[4].suit = chand[5].rank = chand[5].suit = EMPTY;
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}
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/*
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* cut:
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* Cut the deck and set turnover. Actually, we only ASK the
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* player what card to turn. We do a random one, anyway.
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*/
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int
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cut(mycrib, pos)
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BOOLEAN mycrib;
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int pos;
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{
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int i;
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BOOLEAN win;
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win = FALSE;
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if (mycrib) {
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if (!rflag) { /* random cut */
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msg(quiet ? "Cut the deck? " :
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"How many cards down do you wish to cut the deck? ");
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getline();
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}
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i = (rand() >> 4) % (CARDS - pos);
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turnover = deck[i + pos];
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addmsg(quiet ? "You cut " : "You cut the ");
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msgcard(turnover, FALSE);
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endmsg();
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if (turnover.rank == JACK) {
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msg("I get two for his heels");
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win = chkscr(&cscore, 2);
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}
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} else {
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i = (rand() >> 4) % (CARDS - pos) + pos;
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turnover = deck[i];
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addmsg(quiet ? "I cut " : "I cut the ");
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msgcard(turnover, FALSE);
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endmsg();
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if (turnover.rank == JACK) {
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msg("You get two for his heels");
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win = chkscr(&pscore, 2);
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}
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}
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makeknown(&turnover, 1);
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prcrib(mycrib, FALSE);
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return (win);
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}
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/*
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* prcrib:
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* Print out the turnover card with crib indicator
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*/
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void
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prcrib(mycrib, blank)
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BOOLEAN mycrib, blank;
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{
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int y, cardx;
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if (mycrib)
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cardx = CRIB_X;
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else
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cardx = 0;
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mvaddstr(CRIB_Y, cardx + 1, "CRIB");
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prcard(stdscr, CRIB_Y + 1, cardx, turnover, blank);
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if (mycrib)
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cardx = 0;
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else
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cardx = CRIB_X;
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for (y = CRIB_Y; y <= CRIB_Y + 5; y++)
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mvaddstr(y, cardx, " ");
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refresh();
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}
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/*
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* peg:
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* Handle all the pegging...
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*/
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static CARD Table[14];
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static int Tcnt;
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int
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peg(mycrib)
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BOOLEAN mycrib;
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{
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static CARD ch[CINHAND], ph[CINHAND];
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int i, j, k;
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int l;
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int cnum, pnum, sum;
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BOOLEAN myturn, mego, ugo, last, played;
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CARD crd;
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played = FALSE;
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cnum = pnum = CINHAND;
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for (i = 0; i < CINHAND; i++) { /* make copies of hands */
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ch[i] = chand[i];
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ph[i] = phand[i];
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}
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Tcnt = 0; /* index to table of cards played */
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sum = 0; /* sum of cards played */
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mego = ugo = FALSE;
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myturn = !mycrib;
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for (;;) {
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last = TRUE; /* enable last flag */
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prhand(ph, pnum, Playwin, FALSE);
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prhand(ch, cnum, Compwin, TRUE);
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prtable(sum);
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if (myturn) { /* my tyrn to play */
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if (!anymove(ch, cnum, sum)) { /* if no card to play */
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if (!mego && cnum) { /* go for comp? */
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msg("GO");
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mego = TRUE;
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}
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/* can player move? */
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if (anymove(ph, pnum, sum))
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myturn = !myturn;
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else { /* give him his point */
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msg(quiet ? "You get one" :
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"You get one point");
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do_wait();
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if (chkscr(&pscore, 1))
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return TRUE;
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sum = 0;
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mego = ugo = FALSE;
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Tcnt = 0;
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}
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} else {
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played = TRUE;
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j = -1;
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k = 0;
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/* maximize score */
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for (i = 0; i < cnum; i++) {
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l = pegscore(ch[i], Table, Tcnt, sum);
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if (l > k) {
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k = l;
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j = i;
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}
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}
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if (j < 0) /* if nothing scores */
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j = cchose(ch, cnum, sum);
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crd = ch[j];
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cremove(crd, ch, cnum--);
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sum += VAL(crd.rank);
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Table[Tcnt++] = crd;
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if (k > 0) {
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addmsg(quiet ? "I get %d playing " :
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"I get %d points playing ", k);
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msgcard(crd, FALSE);
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endmsg();
|
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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
|
|
*/
|
|
void
|
|
prtable(score)
|
|
int score;
|
|
{
|
|
prhand(Table, Tcnt, Tablewin, FALSE);
|
|
mvwprintw(Tablewin, (Tcnt + 2) * 2, Tcnt + 1, "%2d", score);
|
|
wrefresh(Tablewin);
|
|
}
|
|
|
|
/*
|
|
* score:
|
|
* Handle the scoring of the hands
|
|
*/
|
|
int
|
|
score(mycrib)
|
|
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);
|
|
}
|