File: [local] / src / games / fish / fish.c (download)
Revision 1.23, Mon Mar 7 12:07:56 2016 UTC (8 years, 3 months ago) by mestre
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, OPENBSD_7_4_BASE, OPENBSD_7_4, OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, OPENBSD_6_5_BASE, OPENBSD_6_5, OPENBSD_6_4_BASE, OPENBSD_6_4, OPENBSD_6_3_BASE, OPENBSD_6_3, OPENBSD_6_2_BASE, OPENBSD_6_2, OPENBSD_6_1_BASE, OPENBSD_6_1, OPENBSD_6_0_BASE, OPENBSD_6_0, HEAD Changes since 1.22: +2 -3 lines
- General changes:
- Remove -? from getopt(3) options, but still keep (or add) -h where applicable
- Replace hardcoded program strings by getprogname(3)
- Specific changes:
- atc(6): this used -? and -u for usage(), remove both from game and manpage
- bcd(6): use __progname instead of getprogname(3), no need to include stdlib.h
- hunt(6): replace fputs(3) by fprintf(3)
OK tb@ after his suggestions
|
/* $OpenBSD: fish.c,v 1.23 2016/03/07 12:07:56 mestre Exp $ */
/* $NetBSD: fish.c,v 1.3 1995/03/23 08:28:18 cgd Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Muffy Barkocy.
*
* 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/wait.h>
#include <err.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pathnames.h"
#define RANKS 13
#define HANDSIZE 7
#define CARDS 4
#define TOTCARDS RANKS * CARDS
#define USER 1
#define COMPUTER 0
#define OTHER(a) (1 - (a))
const char *const cards[] = {
"A", "2", "3", "4", "5", "6", "7",
"8", "9", "10", "J", "Q", "K", NULL,
};
#define PRC(card) (void)printf(" %s", cards[card])
int promode;
int curcard;
int asked[RANKS], comphand[RANKS], deck[TOTCARDS];
int userasked[RANKS], userhand[RANKS];
void chkwinner(int, const int *);
int compmove(void);
int countbooks(const int *);
int countcards(const int *);
int drawcard(int, int *);
int getans(const char *);
int gofish(int, int, int *);
void goodmove(int, int, int *, int *);
void init(void);
void instructions(void);
int nrandom(int);
void printhand(const int *);
void printplayer(int);
int promove(void);
__dead void usage(void);
int usermove(void);
int
main(int argc, char *argv[])
{
int ch, move;
if (pledge("stdio rpath proc exec", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "ph")) != -1)
switch(ch) {
case 'p':
promode = 1;
break;
case 'h':
default:
usage();
}
instructions();
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
init();
if (nrandom(2) == 1) {
printplayer(COMPUTER);
(void)printf("get to start.\n");
goto istart;
}
printplayer(USER);
(void)printf("get to start.\n");
for (;;) {
move = usermove();
if (!comphand[move]) {
if (gofish(move, USER, userhand))
continue;
} else {
goodmove(USER, move, userhand, comphand);
continue;
}
istart: for (;;) {
move = compmove();
if (!userhand[move]) {
if (!gofish(move, COMPUTER, comphand))
break;
} else
goodmove(COMPUTER, move, comphand, userhand);
}
}
}
int
usermove(void)
{
int n;
const char *const *p;
char buf[256];
(void)printf("\nYour hand is:");
printhand(userhand);
for (;;) {
(void)printf("You ask me for: ");
(void)fflush(stdout);
if (fgets(buf, sizeof(buf), stdin) == NULL)
exit(0);
if (buf[0] == '\0')
continue;
if (buf[0] == '\n') {
(void)printf("%d cards in my hand, %d in the pool.\n",
countcards(comphand), curcard);
(void)printf("My books:");
(void)countbooks(comphand);
continue;
}
buf[strlen(buf) - 1] = '\0';
if (!strcasecmp(buf, "p") && !promode) {
promode = 1;
(void)printf("Entering pro mode.\n");
continue;
}
if (!strcasecmp(buf, "quit"))
exit(0);
for (p = cards; *p; ++p)
if (!strcasecmp(*p, buf))
break;
if (!*p) {
(void)printf("I don't understand!\n");
continue;
}
n = p - cards;
if (userhand[n]) {
userasked[n] = 1;
return(n);
}
if (nrandom(3) == 1)
(void)printf("You don't have any of those!\n");
else
(void)printf("You don't have any %s's!\n", cards[n]);
if (nrandom(4) == 1)
(void)printf("No cheating!\n");
(void)printf("Guess again.\n");
}
}
int
compmove(void)
{
static int lmove;
if (promode)
lmove = promove();
else {
do {
lmove = (lmove + 1) % RANKS;
} while (!comphand[lmove] || comphand[lmove] == CARDS);
}
asked[lmove] = 1;
(void)printf("I ask you for: %s.\n", cards[lmove]);
return(lmove);
}
int
promove(void)
{
int i, max;
for (i = 0; i < RANKS; ++i)
if (userasked[i] &&
comphand[i] > 0 && comphand[i] < CARDS) {
userasked[i] = 0;
return(i);
}
if (nrandom(3) == 1) {
for (i = 0;; ++i)
if (comphand[i] && comphand[i] != CARDS) {
max = i;
break;
}
while (++i < RANKS)
if (comphand[i] != CARDS &&
comphand[i] > comphand[max])
max = i;
return(max);
}
if (nrandom(1024) == 723) {
for (i = 0; i < RANKS; ++i)
if (userhand[i] && comphand[i])
return(i);
}
for (;;) {
for (i = 0; i < RANKS; ++i)
if (comphand[i] && comphand[i] != CARDS &&
!asked[i])
return(i);
for (i = 0; i < RANKS; ++i)
asked[i] = 0;
}
}
int
drawcard(int player, int *hand)
{
int card;
++hand[card = deck[--curcard]];
if (player == USER || hand[card] == CARDS) {
printplayer(player);
(void)printf("drew %s", cards[card]);
if (hand[card] == CARDS) {
(void)printf(" and made a book of %s's!\n",
cards[card]);
chkwinner(player, hand);
} else
(void)printf(".\n");
}
return(card);
}
int
gofish(int askedfor, int player, int *hand)
{
printplayer(OTHER(player));
(void)printf("say \"GO FISH!\"\n");
if (askedfor == drawcard(player, hand)) {
printplayer(player);
(void)printf("drew the guess!\n");
printplayer(player);
(void)printf("get to ask again!\n");
return(1);
}
return(0);
}
void
goodmove(int player, int move, int *hand, int *opphand)
{
printplayer(OTHER(player));
(void)printf("have %d %s%s.\n",
opphand[move], cards[move], opphand[move] == 1 ? "": "'s");
hand[move] += opphand[move];
opphand[move] = 0;
if (hand[move] == CARDS) {
printplayer(player);
(void)printf("made a book of %s's!\n", cards[move]);
chkwinner(player, hand);
}
chkwinner(OTHER(player), opphand);
printplayer(player);
(void)printf("get another guess!\n");
}
void
chkwinner(int player, const int *hand)
{
int cb, i, ub;
for (i = 0; i < RANKS; ++i)
if (hand[i] > 0 && hand[i] < CARDS)
return;
printplayer(player);
(void)printf("don't have any more cards!\n");
(void)printf("My books:");
cb = countbooks(comphand);
(void)printf("Your books:");
ub = countbooks(userhand);
(void)printf("\nI have %d, you have %d.\n", cb, ub);
if (ub > cb) {
(void)printf("\nYou win!!!\n");
if (nrandom(1024) == 723)
(void)printf("Cheater, cheater, pumpkin eater!\n");
} else if (cb > ub) {
(void)printf("\nI win!!!\n");
if (nrandom(1024) == 723)
(void)printf("Hah! Stupid peasant!\n");
} else
(void)printf("\nTie!\n");
exit(0);
}
void
printplayer(int player)
{
switch (player) {
case COMPUTER:
(void)printf("I ");
break;
case USER:
(void)printf("You ");
break;
}
}
void
printhand(const int *hand)
{
int book, i, j;
for (book = i = 0; i < RANKS; i++)
if (hand[i] < CARDS)
for (j = hand[i]; --j >= 0;)
PRC(i);
else
++book;
if (book) {
(void)printf(" + Book%s of", book > 1 ? "s" : "");
for (i = 0; i < RANKS; i++)
if (hand[i] == CARDS)
PRC(i);
}
(void)putchar('\n');
}
int
countcards(const int *hand)
{
int i, count;
for (count = i = 0; i < RANKS; i++)
count += *hand++;
return(count);
}
int
countbooks(const int *hand)
{
int i, count;
for (count = i = 0; i < RANKS; i++)
if (hand[i] == CARDS) {
++count;
PRC(i);
}
if (!count)
(void)printf(" none");
(void)putchar('\n');
return(count);
}
void
init(void)
{
int i, j, temp;
curcard = TOTCARDS;
for (i = 0; i < TOTCARDS; ++i)
deck[i] = i % RANKS;
for (i = 0; i < TOTCARDS - 1; ++i) {
j = nrandom(TOTCARDS-i);
if (j == 0)
continue;
temp = deck[i];
deck[i] = deck[i+j];
deck[i+j] = temp;
}
for (i = 0; i < HANDSIZE; ++i) {
++userhand[deck[--curcard]];
++comphand[deck[--curcard]];
}
}
int
nrandom(int n)
{
return(arc4random_uniform(n));
}
int
getans(const char *prompt)
{
char buf[20];
/*
* simple routine to ask the yes/no question specified until the user
* answers yes or no, then return 1 if they said 'yes' and 0 if they
* answered 'no'.
*/
for (;;) {
(void)printf("%s", prompt);
(void)fflush(stdout);
if (!fgets(buf, sizeof(buf), stdin)) {
(void)printf("\n");
exit(0);
}
if (*buf == 'N' || *buf == 'n')
return(0);
if (*buf == 'Y' || *buf == 'y')
return(1);
(void)printf(
"I don't understand your answer; please enter 'y' or 'n'!\n");
}
}
void
instructions(void)
{
const char *pager;
pid_t pid;
int status;
int input;
int fd;
if (getans("Would you like instructions (y or n)? ") == 0)
return;
if ((fd = open(_PATH_INSTR, O_RDONLY)) == -1)
(void)printf("No instruction file found!\n");
else {
switch (pid = fork()) {
case 0: /* child */
if (!isatty(1))
pager = "/bin/cat";
else {
if (!(pager = getenv("PAGER")) || (*pager == 0))
pager = _PATH_MORE;
}
if (dup2(fd, 0) == -1)
err(1, "dup2");
(void)execl(_PATH_BSHELL, "sh", "-c", pager, (char *)NULL);
err(1, "exec sh -c %s", pager);
/* NOT REACHED */
case -1:
err(1, "fork");
/* NOT REACHED */
default:
(void)waitpid(pid, &status, 0);
close(fd);
break;
}
}
(void)printf("Hit return to continue...\n");
while ((input = getchar()) != EOF && input != '\n');
}
void
usage(void)
{
(void)fprintf(stderr, "usage: %s [-p]\n", getprogname());
exit(1);
}