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NetBSD/games/gomoku/main.c

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/* $NetBSD: main.c,v 1.26 2011/08/16 11:10:54 christos Exp $ */
/*
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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) 1994\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 5/4/95";
#else
__RCSID("$NetBSD: main.c,v 1.26 2011/08/16 11:10:54 christos Exp $");
#endif
#endif /* not lint */
#include <curses.h>
#include <err.h>
#include <limits.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "gomoku.h"
#define USER 0 /* get input from standard input */
#define PROGRAM 1 /* get input from program */
#define INPUTF 2 /* get input from a file */
int interactive = 1; /* true if interactive */
int debug; /* true if debugging */
static int test; /* both moves come from 1: input, 2: computer */
static char *prog; /* name of program */
static char user[LOGIN_NAME_MAX]; /* name of player */
static FILE *debugfp; /* file for debug output */
static FILE *inputfp; /* file for debug input */
const char pdir[4] = "-\\|/";
struct spotstr board[BAREA]; /* info for board */
struct combostr frames[FAREA]; /* storage for all frames */
struct combostr *sortframes[2]; /* sorted list of non-empty frames */
u_char overlap[FAREA * FAREA]; /* true if frame [a][b] overlap */
short intersect[FAREA * FAREA]; /* frame [a][b] intersection */
int movelog[BSZ * BSZ]; /* log of all the moves */
int movenum; /* current move number */
const char *plyr[2]; /* who's who */
static int readinput(FILE *);
static void misclog(const char *, ...) __printflike(1, 2);
static void quit(void) __dead;
static void quitsig(int) __dead;
int
main(int argc, char **argv)
{
char buf[128];
char fname[PATH_MAX];
char *tmp;
int color, curmove, i, ch;
int input[2];
/* Revoke setgid privileges */
setgid(getgid());
tmp = getlogin();
if (tmp) {
strlcpy(user, tmp, sizeof(user));
} else {
strcpy(user, "you");
}
color = curmove = 0;
prog = strrchr(argv[0], '/');
if (prog)
prog++;
else
prog = argv[0];
while ((ch = getopt(argc, argv, "bcdD:u")) != -1) {
switch (ch) {
case 'b': /* background */
interactive = 0;
break;
case 'd': /* debugging */
debug++;
break;
case 'D': /* log debug output to file */
if ((debugfp = fopen(optarg, "w")) == NULL)
err(1, "%s", optarg);
break;
case 'u': /* testing: user versus user */
test = 1;
break;
case 'c': /* testing: computer versus computer */
test = 2;
break;
}
}
argc -= optind;
argv += optind;
if (argc) {
if ((inputfp = fopen(*argv, "r")) == NULL)
err(1, "%s", *argv);
}
if (!debug)
srandom(time(0));
if (interactive)
cursinit(); /* initialize curses */
again:
bdinit(board); /* initialize board contents */
if (interactive) {
plyr[BLACK] = plyr[WHITE] = "???";
bdisp_init(); /* initialize display of board */
#ifdef DEBUG
signal(SIGINT, whatsup);
#else
signal(SIGINT, quitsig);
#endif
if (inputfp == NULL && test == 0) {
move(BSZ3, 0);
printw("Black moves first. ");
ask("(B)lack or (W)hite? ");
for (;;) {
ch = get_key(NULL);
if (ch == 'b' || ch == 'B') {
color = BLACK;
break;
}
if (ch == 'w' || ch == 'W') {
color = WHITE;
break;
}
if (ch == 'q' || ch == 'Q') {
quit();
}
beep();
ask("Please choose (B)lack or (W)hite: ");
}
move(BSZ3, 0);
clrtoeol();
}
} else {
setbuf(stdout, 0);
get_line(buf, sizeof(buf));
if (strcmp(buf, "black") == 0)
color = BLACK;
else if (strcmp(buf, "white") == 0)
color = WHITE;
else {
panic("Huh? Expected `black' or `white', got `%s'\n",
buf);
}
}
if (inputfp) {
input[BLACK] = INPUTF;
input[WHITE] = INPUTF;
} else {
switch (test) {
case 0: /* user versus program */
input[color] = USER;
input[!color] = PROGRAM;
break;
case 1: /* user versus user */
input[BLACK] = USER;
input[WHITE] = USER;
break;
case 2: /* program versus program */
input[BLACK] = PROGRAM;
input[WHITE] = PROGRAM;
break;
}
}
if (interactive) {
plyr[BLACK] = input[BLACK] == USER ? user : prog;
plyr[WHITE] = input[WHITE] == USER ? user : prog;
bdwho(1);
}
for (color = BLACK; ; color = !color) {
top:
switch (input[color]) {
case INPUTF: /* input comes from a file */
curmove = readinput(inputfp);
if (curmove != ILLEGAL)
break;
switch (test) {
case 0: /* user versus program */
input[color] = USER;
input[!color] = PROGRAM;
break;
case 1: /* user versus user */
input[BLACK] = USER;
input[WHITE] = USER;
break;
case 2: /* program versus program */
input[BLACK] = PROGRAM;
input[WHITE] = PROGRAM;
break;
}
plyr[BLACK] = input[BLACK] == USER ? user : prog;
plyr[WHITE] = input[WHITE] == USER ? user : prog;
bdwho(1);
goto top;
case USER: /* input comes from standard input */
getinput:
if (interactive) {
ask("Select move, (S)ave or (Q)uit.");
curmove = get_coord();
if (curmove == SAVE) {
FILE *fp;
ask("Save file name? ");
(void)get_line(fname, sizeof(fname));
if ((fp = fopen(fname, "w")) == NULL) {
misclog("cannot create save file");
goto getinput;
}
for (i = 0; i < movenum - 1; i++)
fprintf(fp, "%s\n",
stoc(movelog[i]));
fclose(fp);
goto getinput;
}
if (curmove != RESIGN &&
board[curmove].s_occ != EMPTY) {
/*misclog("Illegal move");*/
beep();
goto getinput;
}
} else {
if (!get_line(buf, sizeof(buf))) {
curmove = RESIGN;
break;
}
if (buf[0] == '\0')
goto getinput;
curmove = ctos(buf);
}
break;
case PROGRAM: /* input comes from the program */
if (interactive)
ask("Thinking...");
curmove = pickmove(color);
break;
}
if (interactive) {
misclog("%3d%s%-6s", movenum, color ? " " : " ",
stoc(curmove));
}
if ((i = makemove(color, curmove)) != MOVEOK)
break;
if (interactive)
bdisp();
}
if (interactive) {
move(BSZ3, 0);
switch (i) {
case WIN:
if (input[color] == PROGRAM)
addstr("Ha ha, I won");
else if (input[0] == USER && input[1] == USER)
addstr("Well, you won (and lost)");
else
addstr("Rats! you won");
break;
case TIE:
addstr("Wow! It's a tie");
break;
case ILLEGAL:
addstr("Illegal move");
break;
}
clrtoeol();
bdisp();
if (i != RESIGN) {
replay:
ask("Play again? ");
ch = get_key("YyNnQqSs");
if (ch == 'Y' || ch == 'y')
goto again;
if (ch == 'S') {
FILE *fp;
ask("Save file name? ");
(void)get_line(fname, sizeof(fname));
if ((fp = fopen(fname, "w")) == NULL) {
misclog("cannot create save file");
goto replay;
}
for (i = 0; i < movenum - 1; i++)
fprintf(fp, "%s\n",
stoc(movelog[i]));
fclose(fp);
goto replay;
}
}
}
quit();
/* NOTREACHED */
return(0);
}
static int
readinput(FILE *fp)
{
int c;
char buf[128];
size_t pos;
pos = 0;
while ((c = getc(fp)) != EOF && c != '\n' && pos < sizeof(buf) - 1)
buf[pos++] = c;
buf[pos] = '\0';
return ctos(buf);
}
#ifdef DEBUG
/*
* Handle strange situations.
*/
void
whatsup(int signum)
{
int i, n, s1, s2, d1, d2;
struct spotstr *sp;
FILE *fp;
char *str;
struct elist *ep;
struct combostr *cbp;
char input[128];
char tmp[128];
if (!interactive)
quit();
top:
ask("debug command: ");
if (!get_line(input, sizeof(input)))
quit();
switch (*input) {
case '\0':
goto top;
case 'q': /* conservative quit */
quit();
case 'd': /* set debug level */
debug = input[1] - '0';
debuglog("Debug set to %d", debug);
sleep(1);
case 'c':
break;
case 'b': /* back up a move */
if (movenum > 1) {
movenum--;
board[movelog[movenum - 1]].s_occ = EMPTY;
bdisp();
}
goto top;
case 's': /* suggest a move */
i = input[1] == 'b' ? BLACK : WHITE;
debuglog("suggest %c %s", i == BLACK ? 'B' : 'W',
stoc(pickmove(i)));
goto top;
case 'f': /* go forward a move */
board[movelog[movenum - 1]].s_occ = movenum & 1 ? BLACK : WHITE;
movenum++;
bdisp();
goto top;
case 'l': /* print move history */
if (input[1] == '\0') {
for (i = 0; i < movenum - 1; i++)
debuglog("%s", stoc(movelog[i]));
goto top;
}
if ((fp = fopen(input + 1, "w")) == NULL)
goto top;
for (i = 0; i < movenum - 1; i++) {
fprintf(fp, "%s", stoc(movelog[i]));
if (++i < movenum - 1)
fprintf(fp, " %s\n", stoc(movelog[i]));
else
fputc('\n', fp);
}
bdump(fp);
fclose(fp);
goto top;
case 'o':
/* avoid use w/o initialization on invalid input */
d1 = s1 = 0;
n = 0;
for (str = input + 1; *str; str++)
if (*str == ',') {
for (d1 = 0; d1 < 4; d1++)
if (str[-1] == pdir[d1])
break;
str[-1] = '\0';
sp = &board[s1 = ctos(input + 1)];
n = (sp->s_frame[d1] - frames) * FAREA;
*str++ = '\0';
break;
}
sp = &board[s2 = ctos(str)];
while (*str)
str++;
for (d2 = 0; d2 < 4; d2++)
if (str[-1] == pdir[d2])
break;
n += sp->s_frame[d2] - frames;
debuglog("overlap %s%c,%s%c = %x", stoc(s1), pdir[d1],
stoc(s2), pdir[d2], overlap[n]);
goto top;
case 'p':
sp = &board[i = ctos(input + 1)];
debuglog("V %s %x/%d %d %x/%d %d %d %x", stoc(i),
sp->s_combo[BLACK].s, sp->s_level[BLACK],
sp->s_nforce[BLACK],
sp->s_combo[WHITE].s, sp->s_level[WHITE],
sp->s_nforce[WHITE], sp->s_wval, sp->s_flags);
debuglog("FB %s %x %x %x %x", stoc(i),
sp->s_fval[BLACK][0].s, sp->s_fval[BLACK][1].s,
sp->s_fval[BLACK][2].s, sp->s_fval[BLACK][3].s);
debuglog("FW %s %x %x %x %x", stoc(i),
sp->s_fval[WHITE][0].s, sp->s_fval[WHITE][1].s,
sp->s_fval[WHITE][2].s, sp->s_fval[WHITE][3].s);
goto top;
case 'e': /* e {b|w} [0-9] spot */
str = input + 1;
if (*str >= '0' && *str <= '9')
n = *str++ - '0';
else
n = 0;
sp = &board[i = ctos(str)];
for (ep = sp->s_empty; ep; ep = ep->e_next) {
cbp = ep->e_combo;
if (n) {
if (cbp->c_nframes > n)
continue;
if (cbp->c_nframes != n)
break;
}
printcombo(cbp, tmp, sizeof(tmp));
debuglog("%s", tmp);
}
goto top;
default:
debuglog("Options are:");
debuglog("q - quit");
debuglog("c - continue");
debuglog("d# - set debug level to #");
debuglog("p# - print values at #");
goto top;
}
}
#endif /* DEBUG */
/*
* Display debug info.
*/
void
debuglog(const char *fmt, ...)
{
va_list ap;
char buf[128];
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
if (debugfp)
fprintf(debugfp, "%s\n", buf);
if (interactive)
dislog(buf);
else
fprintf(stderr, "%s\n", buf);
}
static void
misclog(const char *fmt, ...)
{
va_list ap;
char buf[128];
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
if (debugfp)
fprintf(debugfp, "%s\n", buf);
if (interactive)
dislog(buf);
else
printf("%s\n", buf);
}
static void
quit(void)
{
if (interactive) {
bdisp(); /* show final board */
cursfini();
}
exit(0);
}
static void
quitsig(int dummy __unused)
{
quit();
}
/*
* Die gracefully.
*/
void
panic(const char *fmt, ...)
{
va_list ap;
fprintf(stderr, "%s: ", prog);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
fputs("resign\n", stdout);
quit();
}
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