minix/commands/advent/advent.c

137 lines
2.8 KiB
C
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2005-04-21 16:53:53 +02:00
/** Adventure translated from Fortran to "C"
and ported to Minix by:
Robert R. Hall
San Diego, Calif 92115
hall@crash.cts.com
*/
/** program ADVENT.C *
* "advent.c" allocates GLOBAL storage space by *
* #defining EXTERN before #including "advdec.h". */
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <errno.h>
#include "advent.h" /* #define preprocessor equates */
#include "advdec.h"
#ifndef TEXTDIR
#define TEXTDIR ""
#endif
char textdir[] = TEXTDIR; /* directory where text files
live. */
_PROTOTYPE(int main, (int, char **));
_PROTOTYPE(static void opentxt, (void));
_PROTOTYPE(static void file_error, (char *));
int main(argc, argv)
int argc;
char **argv;
{
opentxt();
initialize();
rspeak(325);
if (argc == 2)
restore(argv[1]);
else {
g.hinted[3] = yes(65, 1, 0);
g.limit = (g.hinted[3] ? 800 : 550);
}
gaveup = FALSE;
srand((unsigned) time(NULL)); /* seed random */
while (!gaveup)
turn();
fclose(fd1);
fclose(fd2);
fclose(fd3);
fclose(fd4);
return (EXIT_SUCCESS); /* exit = ok */
} /* main */
/*
Open advent?.txt files
*/
static void opentxt()
{
static char filename[sizeof(textdir) + 16];
static FILE **fp[] = {0, &fd1, &fd2, &fd3, &fd4};
int i;
for (i = 1; i <= 4; i++) {
sprintf(filename, "%sadvent%d.dat", textdir, i);
*fp[i] = fopen(filename, "r");
if (!*fp[i])
file_error(filename);
}
}
/*
save adventure game
*/
void saveadv(username)
char *username;
{
int cnt;
FILE *savefd;
savefd = fopen(username, "wb");
if (savefd == NULL) {
perror(username);
return;
}
cnt = fwrite((void *) &g, 1, sizeof(struct playinfo), savefd);
if (cnt != sizeof(struct playinfo)) {
fprintf(stderr, "wrote %d of %u bytes\n",
cnt, (unsigned) sizeof(struct playinfo));
if (ferror(savefd)) {
fprintf(stderr, "errno is: 0x%.4x\n", errno);
perror(username);
}
}
if (fclose(savefd) == -1) {
perror(username);
}
printf("Saved in %s.\n", username);
return;
}
/*
restore saved game handler
*/
void restore(username)
char *username;
{
int cnt;
FILE *restfd;
restfd = fopen(username, "rb");
if (restfd == NULL)
file_error(username);
cnt = fread((void *) &g, 1, sizeof(struct playinfo), restfd);
if (cnt != sizeof(struct playinfo)) {
fprintf(stderr, "read %d bytes, expected %u\n",
cnt, (unsigned) sizeof(struct playinfo));
if (ferror(restfd)) {
fprintf(stderr, "errno is: 0x%.4x\n", errno);
perror(username);
}
}
if (fclose(restfd) == -1) {
perror(username);
}
printf("Restored from %s.\n", username);
return;
}
static void file_error(filename)
char *filename;
{
perror(filename);
exit(EXIT_FAILURE);
}