minix/games/rogue/save.c

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/* $NetBSD: save.c,v 1.13 2008/01/14 03:50:02 dholland Exp $ */
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Timothy C. Stoehr.
*
* 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
#if 0
static char sccsid[] = "@(#)save.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: save.c,v 1.13 2008/01/14 03:50:02 dholland Exp $");
#endif
#endif /* not lint */
/*
* save.c
*
* This source herein may be modified and/or distributed by anybody who
* so desires, with the following restrictions:
* 1.) No portion of this notice shall be removed.
* 2.) Credit shall not be taken for the creation of this source.
* 3.) This code is not to be traded, sold, or used for personal
* gain or profit.
*
*/
#include <stdio.h>
#include "rogue.h"
static boolean has_been_touched(const struct rogue_time *,
const struct rogue_time *);
static void r_read(FILE *, void *, size_t);
static void r_write(FILE *, const void *, size_t);
static void read_pack(object *, FILE *, boolean);
static void read_string(char *, FILE *, size_t);
static void rw_dungeon(FILE *, boolean);
static void rw_id(struct id *, FILE *, int, boolean);
static void rw_rooms(FILE *, boolean);
static void write_pack(const object *, FILE *);
static void write_string(char *, FILE *);
static short write_failed = 0;
char *save_file = NULL;
void
save_game(void)
{
char fname[64];
if (!get_input_line("file name?", save_file, fname, sizeof(fname),
"game not saved", 0, 1)) {
return;
}
check_message();
messagef(0, "%s", fname);
save_into_file(fname);
}
void
save_into_file(const char *sfile)
{
FILE *fp;
int file_id;
char *name_buffer;
size_t len;
char *hptr;
struct rogue_time rt_buf;
if (sfile[0] == '~') {
if ((hptr = md_getenv("HOME")) != NULL) {
len = strlen(hptr) + strlen(sfile);
name_buffer = md_malloc(len);
if (name_buffer == NULL) {
messagef(0,
"out of memory for save file name");
sfile = error_file;
} else {
(void)strcpy(name_buffer, hptr);
(void)strcat(name_buffer, sfile+1);
sfile = name_buffer;
}
/*
* Note: name_buffer gets leaked. But it's small,
* and in the common case we're about to exit.
*/
}
}
if (((fp = fopen(sfile, "w")) == NULL) ||
((file_id = md_get_file_id(sfile)) == -1)) {
if (fp)
fclose(fp);
messagef(0, "problem accessing the save file");
return;
}
md_ignore_signals();
write_failed = 0;
(void)xxx(1);
r_write(fp, &detect_monster, sizeof(detect_monster));
r_write(fp, &cur_level, sizeof(cur_level));
r_write(fp, &max_level, sizeof(max_level));
write_string(hunger_str, fp);
write_string(login_name, fp);
r_write(fp, &party_room, sizeof(party_room));
write_pack(&level_monsters, fp);
write_pack(&level_objects, fp);
r_write(fp, &file_id, sizeof(file_id));
rw_dungeon(fp, 1);
r_write(fp, &foods, sizeof(foods));
r_write(fp, &rogue, sizeof(fighter));
write_pack(&rogue.pack, fp);
rw_id(id_potions, fp, POTIONS, 1);
rw_id(id_scrolls, fp, SCROLS, 1);
rw_id(id_wands, fp, WANDS, 1);
rw_id(id_rings, fp, RINGS, 1);
r_write(fp, traps, (MAX_TRAPS * sizeof(trap)));
r_write(fp, is_wood, (WANDS * sizeof(boolean)));
r_write(fp, &cur_room, sizeof(cur_room));
rw_rooms(fp, 1);
r_write(fp, &being_held, sizeof(being_held));
r_write(fp, &bear_trap, sizeof(bear_trap));
r_write(fp, &halluc, sizeof(halluc));
r_write(fp, &blind, sizeof(blind));
r_write(fp, &confused, sizeof(confused));
r_write(fp, &levitate, sizeof(levitate));
r_write(fp, &haste_self, sizeof(haste_self));
r_write(fp, &see_invisible, sizeof(see_invisible));
r_write(fp, &detect_monster, sizeof(detect_monster));
r_write(fp, &wizard, sizeof(wizard));
r_write(fp, &score_only, sizeof(score_only));
r_write(fp, &m_moves, sizeof(m_moves));
md_gct(&rt_buf);
rt_buf.second += 10; /* allow for some processing time */
r_write(fp, &rt_buf, sizeof(rt_buf));
fclose(fp);
if (write_failed) {
(void)md_df(sfile); /* delete file */
} else {
clean_up("");
}
}
void
restore(const char *fname)
{
FILE *fp;
struct rogue_time saved_time, mod_time;
char buf[4];
char tbuf[MAX_OPT_LEN];
int new_file_id, saved_file_id;
fp = NULL;
if (((new_file_id = md_get_file_id(fname)) == -1) ||
((fp = fopen(fname, "r")) == NULL)) {
clean_up("cannot open file");
}
if (md_link_count(fname) > 1) {
clean_up("file has link");
}
(void)xxx(1);
r_read(fp, &detect_monster, sizeof(detect_monster));
r_read(fp, &cur_level, sizeof(cur_level));
r_read(fp, &max_level, sizeof(max_level));
read_string(hunger_str, fp, sizeof hunger_str);
(void)strlcpy(tbuf, login_name, sizeof tbuf);
read_string(login_name, fp, sizeof login_name);
if (strcmp(tbuf, login_name)) {
clean_up("you're not the original player");
}
r_read(fp, &party_room, sizeof(party_room));
read_pack(&level_monsters, fp, 0);
read_pack(&level_objects, fp, 0);
r_read(fp, &saved_file_id, sizeof(saved_file_id));
if (new_file_id != saved_file_id) {
clean_up("sorry, saved game is not in the same file");
}
rw_dungeon(fp, 0);
r_read(fp, &foods, sizeof(foods));
r_read(fp, &rogue, sizeof(fighter));
read_pack(&rogue.pack, fp, 1);
rw_id(id_potions, fp, POTIONS, 0);
rw_id(id_scrolls, fp, SCROLS, 0);
rw_id(id_wands, fp, WANDS, 0);
rw_id(id_rings, fp, RINGS, 0);
r_read(fp, traps, (MAX_TRAPS * sizeof(trap)));
r_read(fp, is_wood, (WANDS * sizeof(boolean)));
r_read(fp, &cur_room, sizeof(cur_room));
rw_rooms(fp, 0);
r_read(fp, &being_held, sizeof(being_held));
r_read(fp, &bear_trap, sizeof(bear_trap));
r_read(fp, &halluc, sizeof(halluc));
r_read(fp, &blind, sizeof(blind));
r_read(fp, &confused, sizeof(confused));
r_read(fp, &levitate, sizeof(levitate));
r_read(fp, &haste_self, sizeof(haste_self));
r_read(fp, &see_invisible, sizeof(see_invisible));
r_read(fp, &detect_monster, sizeof(detect_monster));
r_read(fp, &wizard, sizeof(wizard));
r_read(fp, &score_only, sizeof(score_only));
r_read(fp, &m_moves, sizeof(m_moves));
r_read(fp, &saved_time, sizeof(saved_time));
if (fread(buf, 1, 1, fp) > 0) {
clear();
clean_up("extra characters in file");
}
md_gfmt(fname, &mod_time); /* get file modification time */
if (has_been_touched(&saved_time, &mod_time)) {
clear();
clean_up("sorry, file has been touched");
}
if ((!wizard) && !md_df(fname)) {
clean_up("cannot delete file");
}
msg_cleared = 0;
ring_stats(0);
fclose(fp);
}
static void
write_pack(const object *pack, FILE *fp)
{
object t;
while ((pack = pack->next_object) != NULL) {
r_write(fp, pack, sizeof(object));
}
t.ichar = t.what_is = 0;
r_write(fp, &t, sizeof(object));
}
static void
read_pack(object *pack, FILE *fp, boolean is_rogue)
{
object read_obj, *new_obj;
for (;;) {
r_read(fp, &read_obj, sizeof(object));
if (read_obj.ichar == 0) {
pack->next_object = NULL;
break;
}
new_obj = alloc_object();
*new_obj = read_obj;
if (is_rogue) {
if (new_obj->in_use_flags & BEING_WORN) {
do_wear(new_obj);
} else if (new_obj->in_use_flags & BEING_WIELDED) {
do_wield(new_obj);
} else if (new_obj->in_use_flags & (ON_EITHER_HAND)) {
do_put_on(new_obj,
((new_obj->in_use_flags & ON_LEFT_HAND) ? 1 : 0));
}
}
pack->next_object = new_obj;
pack = new_obj;
}
}
static void
rw_dungeon(FILE *fp, boolean rw)
{
short i, j;
char buf[DCOLS];
for (i = 0; i < DROWS; i++) {
if (rw) {
r_write(fp, dungeon[i], (DCOLS * sizeof(dungeon[0][0])));
for (j = 0; j < DCOLS; j++) {
buf[j] = mvinch(i, j);
}
r_write(fp, buf, DCOLS);
} else {
r_read(fp, dungeon[i], (DCOLS * sizeof(dungeon[0][0])));
r_read(fp, buf, DCOLS);
for (j = 0; j < DCOLS; j++) {
mvaddch(i, j, buf[j]);
}
}
}
}
static void
rw_id(struct id id_table[], FILE *fp, int n, boolean wr)
{
int i;
for (i = 0; i < n; i++) {
if (wr) {
r_write(fp, &id_table[i].value, sizeof(short));
r_write(fp, &id_table[i].id_status,
sizeof(unsigned short));
write_string(id_table[i].title, fp);
} else {
r_read(fp, &id_table[i].value, sizeof(short));
r_read(fp, &id_table[i].id_status,
sizeof(unsigned short));
read_string(id_table[i].title, fp, MAX_ID_TITLE_LEN);
}
}
}
static void
write_string(char *s, FILE *fp)
{
short n;
n = strlen(s) + 1;
xxxx(s, n);
r_write(fp, &n, sizeof(short));
r_write(fp, s, n);
}
static void
read_string(char *s, FILE *fp, size_t len)
{
short n;
r_read(fp, &n, sizeof(short));
if (n<=0 || (size_t)(unsigned short)n > len) {
clean_up("read_string: corrupt game file");
}
r_read(fp, s, n);
xxxx(s, n);
/* ensure null termination */
s[n-1] = 0;
}
static void
rw_rooms(FILE *fp, boolean rw)
{
short i;
for (i = 0; i < MAXROOMS; i++) {
rw ? r_write(fp, (rooms + i), sizeof(room)) :
r_read(fp, (rooms + i), sizeof(room));
}
}
static void
r_read(FILE *fp, void *buf, size_t n)
{
if (fread(buf, 1, n, fp) != n) {
clean_up("fread() failed, don't know why");
}
}
static void
r_write(FILE *fp, const void *buf, size_t n)
{
if (!write_failed) {
if (fwrite(buf, 1, n, fp) != n) {
messagef(0, "write() failed, don't know why");
sound_bell();
write_failed = 1;
}
}
}
static boolean
has_been_touched(const struct rogue_time *saved_time,
const struct rogue_time *mod_time)
{
if (saved_time->year < mod_time->year) {
return(1);
} else if (saved_time->year > mod_time->year) {
return(0);
}
if (saved_time->month < mod_time->month) {
return(1);
} else if (saved_time->month > mod_time->month) {
return(0);
}
if (saved_time->day < mod_time->day) {
return(1);
} else if (saved_time->day > mod_time->day) {
return(0);
}
if (saved_time->hour < mod_time->hour) {
return(1);
} else if (saved_time->hour > mod_time->hour) {
return(0);
}
if (saved_time->minute < mod_time->minute) {
return(1);
} else if (saved_time->minute > mod_time->minute) {
return(0);
}
if (saved_time->second < mod_time->second) {
return(1);
}
return(0);
}