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state.c
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/*
state.c - Portable Rogue Save State Code
Copyright (C) 1999, 2000, 2005 Nicholas J. Kisseberth
All rights reserved.
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(s) of the author(s) nor the names of other contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) 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 AUTHOR(S) 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 <stdlib.h>
#include <string.h>
#include <curses.h>
#include "rogue.h"
/************************************************************************/
/* Save State Code */
/************************************************************************/
#define RSID_STATS 0xABCD0001
#define RSID_THING 0xABCD0002
#define RSID_THING_NULL 0xDEAD0002
#define RSID_OBJECT 0xABCD0003
#define RSID_MAGICITEMS 0xABCD0004
#define RSID_KNOWS 0xABCD0005
#define RSID_GUESSES 0xABCD0006
#define RSID_OBJECTLIST 0xABCD0007
#define RSID_BAGOBJECT 0xABCD0008
#define RSID_MONSTERLIST 0xABCD0009
#define RSID_MONSTERSTATS 0xABCD000A
#define RSID_MONSTERS 0xABCD000B
#define RSID_TRAP 0xABCD000C
#define RSID_WINDOW 0xABCD000D
#define RSID_DAEMONS 0xABCD000E
#define RSID_IWEAPS 0xABCD000F
#define RSID_IARMOR 0xABCD0010
#define RSID_SPELLS 0xABCD0011
#define RSID_ILIST 0xABCD0012
#define RSID_HLIST 0xABCD0013
#define RSID_DEATHTYPE 0xABCD0014
#define RSID_CTYPES 0XABCD0015
#define RSID_COORDLIST 0XABCD0016
#define RSID_ROOMS 0XABCD0017
#define READSTAT (format_error || read_error )
#define WRITESTAT (write_error)
static int read_error = FALSE;
static int write_error = FALSE;
static int format_error = FALSE;
static int endian = 0x01020304;
#define big_endian ( *((char *)&endian) == 0x01 )
int
rs_write(FILE *savef, void *ptr, size_t size)
{
if (write_error)
return(WRITESTAT);
if (encwrite(ptr, size, savef) != size)
write_error = 1;
return(WRITESTAT);
}
int
rs_read(FILE *inf, void *ptr, size_t size)
{
if (read_error || format_error)
return(READSTAT);
if (encread(ptr, size, inf) != size)
read_error = 1;
return(READSTAT);
}
int
rs_write_int(FILE *savef, int c)
{
unsigned char bytes[4];
unsigned char *buf = (unsigned char *) &c;
if (write_error)
return(WRITESTAT);
if (big_endian)
{
bytes[3] = buf[0];
bytes[2] = buf[1];
bytes[1] = buf[2];
bytes[0] = buf[3];
buf = bytes;
}
rs_write(savef, buf, 4);
return(WRITESTAT);
}
int
rs_read_int(FILE *inf, int *i)
{
unsigned char bytes[4];
int input = 0;
unsigned char *buf = (unsigned char *)&input;
if (read_error || format_error)
return(READSTAT);
rs_read(inf, &input, 4);
if (big_endian)
{
bytes[3] = buf[0];
bytes[2] = buf[1];
bytes[1] = buf[2];
bytes[0] = buf[3];
buf = bytes;
}
*i = *((int *) buf);
return(READSTAT);
}
int
rs_write_char(FILE *savef, char c)
{
if (write_error)
return(WRITESTAT);
rs_write(savef, &c, 1);
return(WRITESTAT);
}
int
rs_read_char(FILE *inf, char *c)
{
if (read_error || format_error)
return(READSTAT);
rs_read(inf, c, 1);
return(READSTAT);
}
int
rs_write_chars(FILE *savef, char *c, int count)
{
if (write_error)
return(WRITESTAT);
rs_write_int(savef, count);
rs_write(savef, c, count);
return(WRITESTAT);
}
int
rs_read_chars(FILE *inf, char *i, int count)
{
int value = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &value);
if (value != count)
format_error = TRUE;
rs_read(inf, i, count);
return(READSTAT);
}
int
rs_write_ints(FILE *savef, int *c, int count)
{
int n = 0;
if (write_error)
return(WRITESTAT);
rs_write_int(savef, count);
for(n = 0; n < count; n++)
if( rs_write_int(savef,c[n]) != 0)
break;
return(WRITESTAT);
}
int
rs_read_ints(FILE *inf, int *i, int count)
{
int n, value;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf,&value);
if (value != count)
format_error = TRUE;
for(n = 0; n < count; n++)
if (rs_read_int(inf, &i[n]) != 0)
break;
return(READSTAT);
}
int
rs_write_boolean(FILE *savef, int c)
{
unsigned char buf = (c == 0) ? 0 : 1;
if (write_error)
return(WRITESTAT);
rs_write(savef, &buf, 1);
return(WRITESTAT);
}
int
rs_read_boolean(FILE *inf, bool *i)
{
unsigned char buf = 0;
if (read_error || format_error)
return(READSTAT);
rs_read(inf, &buf, 1);
*i = (buf != 0);
return(READSTAT);
}
int
rs_write_booleans(FILE *savef, bool *c, int count)
{
int n = 0;
if (write_error)
return(WRITESTAT);
rs_write_int(savef, count);
for(n = 0; n < count; n++)
if (rs_write_boolean(savef, c[n]) != 0)
break;
return(WRITESTAT);
}
int
rs_read_booleans(FILE *inf, bool *i, int count)
{
int n = 0, value = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf,&value);
if (value != count)
format_error = TRUE;
for(n = 0; n < count; n++)
if (rs_read_boolean(inf, &i[n]) != 0)
break;
return(READSTAT);
}
int
rs_write_short(FILE *savef, short c)
{
unsigned char bytes[2];
unsigned char *buf = (unsigned char *) &c;
if (write_error)
return(WRITESTAT);
if (big_endian)
{
bytes[1] = buf[0];
bytes[0] = buf[1];
buf = bytes;
}
rs_write(savef, buf, 2);
return(WRITESTAT);
}
int
rs_read_short(FILE *inf, short *i)
{
unsigned char bytes[2];
short input;
unsigned char *buf = (unsigned char *)&input;
if (read_error || format_error)
return(READSTAT);
rs_read(inf, &input, 2);
if (big_endian)
{
bytes[1] = buf[0];
bytes[0] = buf[1];
buf = bytes;
}
*i = *((short *) buf);
return(READSTAT);
}
int
rs_write_shorts(FILE *savef, short *c, int count)
{
int n = 0;
if (write_error)
return(WRITESTAT);
rs_write_int(savef, count);
for(n = 0; n < count; n++)
if (rs_write_short(savef, c[n]) != 0)
break;
return(WRITESTAT);
}
int
rs_read_shorts(FILE *inf, short *i, int count)
{
int n = 0, value = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf,&value);
if (value != count)
format_error = TRUE;
for(n = 0; n < value; n++)
if (rs_read_short(inf, &i[n]) != 0)
break;
return(READSTAT);
}
int
rs_write_ushort(FILE *savef, unsigned short c)
{
unsigned char bytes[2];
unsigned char *buf = (unsigned char *) &c;
if (write_error)
return(WRITESTAT);
if (big_endian)
{
bytes[1] = buf[0];
bytes[0] = buf[1];
buf = bytes;
}
rs_write(savef, buf, 2);
return(WRITESTAT);
}
int
rs_read_ushort(FILE *inf, unsigned short *i)
{
unsigned char bytes[2];
unsigned short input;
unsigned char *buf = (unsigned char *)&input;
if (read_error || format_error)
return(READSTAT);
rs_read(inf, &input, 2);
if (big_endian)
{
bytes[1] = buf[0];
bytes[0] = buf[1];
buf = bytes;
}
*i = *((unsigned short *) buf);
return(READSTAT);
}
int
rs_write_uint(FILE *savef, unsigned int c)
{
unsigned char bytes[4];
unsigned char *buf = (unsigned char *) &c;
if (write_error)
return(WRITESTAT);
if (big_endian)
{
bytes[3] = buf[0];
bytes[2] = buf[1];
bytes[1] = buf[2];
bytes[0] = buf[3];
buf = bytes;
}
rs_write(savef, buf, 4);
return(WRITESTAT);
}
int
rs_read_uint(FILE *inf, unsigned int *i)
{
unsigned char bytes[4];
int input;
unsigned char *buf = (unsigned char *)&input;
if (read_error || format_error)
return(READSTAT);
rs_read(inf, &input, 4);
if (big_endian)
{
bytes[3] = buf[0];
bytes[2] = buf[1];
bytes[1] = buf[2];
bytes[0] = buf[3];
buf = bytes;
}
*i = *((unsigned int *) buf);
return(READSTAT);
}
int
rs_write_marker(FILE *savef, int id)
{
if (write_error)
return(WRITESTAT);
rs_write_int(savef, id);
return(WRITESTAT);
}
int
rs_read_marker(FILE *inf, int id)
{
int nid;
if (read_error || format_error)
return(READSTAT);
if (rs_read_int(inf, &nid) == 0)
if (id != nid)
format_error = 1;
return(READSTAT);
}
/******************************************************************************/
int
rs_write_string(FILE *savef, char *s)
{
int len = 0;
if (write_error)
return(WRITESTAT);
len = (s == NULL) ? 0 : (int) strlen(s) + 1;
rs_write_int(savef, len);
rs_write_chars(savef, s, len);
return(WRITESTAT);
}
int
rs_read_string(FILE *inf, char *s, int max)
{
int len = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &len);
if (len > max)
format_error = TRUE;
rs_read_chars(inf, s, len);
return(READSTAT);
}
int
rs_read_new_string(FILE *inf, char **s)
{
int len=0;
char *buf=0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &len);
if (len == 0)
buf = NULL;
else
{
buf = malloc(len);
if (buf == NULL)
read_error = TRUE;
}
rs_read_chars(inf, buf, len);
*s = buf;
return(READSTAT);
}
int
rs_write_strings(FILE *savef, char *s[], int count)
{
int n = 0;
if (write_error)
return(WRITESTAT);
rs_write_int(savef, count);
for(n = 0; n < count; n++)
if (rs_write_string(savef, s[n]) != 0)
break;
return(WRITESTAT);
}
int
rs_read_strings(FILE *inf, char **s, int count, int max)
{
int n = 0;
int value = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &value);
if (value != count)
format_error = TRUE;
for(n = 0; n < count; n++)
if (rs_read_string(inf, s[n], max) != 0)
break;
return(READSTAT);
}
int
rs_read_new_strings(FILE *inf, char **s, int count)
{
int n = 0;
int value = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &value);
if (value != count)
format_error = TRUE;
for(n = 0; n < count; n++)
if (rs_read_new_string(inf, &s[n]) != 0)
break;
return(READSTAT);
}
int
rs_write_string_index(FILE *savef, char *master[], int max, const char *str)
{
int i;
if (write_error)
return(WRITESTAT);
for(i = 0; i < max; i++)
if (str == master[i])
return( rs_write_int(savef, i) );
return( rs_write_int(savef,-1) );
}
int
rs_read_string_index(FILE *inf, char *master[], int maxindex, char **str)
{
int i;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf, &i);
if (i > maxindex)
format_error = TRUE;
else if (i >= 0)
*str = master[i];
else
*str = NULL;
return(READSTAT);
}
int
rs_write_str_t(FILE *savef, str_t st)
{
if (write_error)
return(WRITESTAT);
rs_write_uint(savef, st);
return( WRITESTAT );
}
int
rs_read_str_t(FILE *inf, str_t *st)
{
if (read_error || format_error)
return(READSTAT);
rs_read_uint(inf, st);
return(READSTAT);
}
int
rs_write_coord(FILE *savef, coord c)
{
if (write_error)
return(WRITESTAT);
rs_write_int(savef, c.x);
rs_write_int(savef, c.y);
return(WRITESTAT);
}
int
rs_read_coord(FILE *inf, coord *c)
{
coord in;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf,&in.x);
rs_read_int(inf,&in.y);
if (READSTAT == 0)
{
c->x = in.x;
c->y = in.y;
}
return(READSTAT);
}
int
rs_write_window(FILE *savef, WINDOW *win)
{
int row,col,height,width;
if (write_error)
return(WRITESTAT);
width = getmaxx(win);
height = getmaxy(win);
rs_write_marker(savef,RSID_WINDOW);
rs_write_int(savef,height);
rs_write_int(savef,width);
for(row=0;row<height;row++)
for(col=0;col<width;col++)
if (rs_write_int(savef, mvwinch(win,row,col)) != 0)
return(WRITESTAT);
return(WRITESTAT);
}
int
rs_read_window(FILE *inf, WINDOW *win)
{
int row,col,maxlines,maxcols,value,width,height;
if (read_error || format_error)
return(READSTAT);
width = getmaxx(win);
height = getmaxy(win);
rs_read_marker(inf, RSID_WINDOW);
rs_read_int(inf, &maxlines);
rs_read_int(inf, &maxcols);
for(row = 0; row < maxlines; row++)
for(col = 0; col < maxcols; col++)
{
if (rs_read_int(inf, &value) != 0)
return(READSTAT);
if ((row < height) && (col < width))
mvwaddch(win,row,col,value);
}
return(READSTAT);
}
/******************************************************************************/
void *
get_list_item(THING *l, int i)
{
int count;
for(count = 0; l != NULL; count++, l = l->l_next)
if (count == i)
return(l);
return(NULL);
}
int
find_list_ptr(THING *l, void *ptr)
{
int count;
for(count = 0; l != NULL; count++, l = l->l_next)
if (l == ptr)
return(count);
return(-1);
}
int
list_size(THING *l)
{
int count;
for(count = 0; l != NULL; count++, l = l->l_next)
;
return(count);
}
/******************************************************************************/
int
rs_write_stats(FILE *savef, struct stats *s)
{
if (write_error)
return(WRITESTAT);
rs_write_marker(savef, RSID_STATS);
rs_write_str_t(savef, s->s_str);
rs_write_int(savef, s->s_exp);
rs_write_int(savef, s->s_lvl);
rs_write_int(savef, s->s_arm);
rs_write_int(savef, s->s_hpt);
rs_write_chars(savef, s->s_dmg, sizeof(s->s_dmg));
rs_write_int(savef,s->s_maxhp);
return(WRITESTAT);
}
int
rs_read_stats(FILE *inf, struct stats *s)
{
if (read_error || format_error)
return(READSTAT);
rs_read_marker(inf, RSID_STATS);
rs_read_str_t(inf,&s->s_str);
rs_read_int(inf,&s->s_exp);
rs_read_int(inf,&s->s_lvl);
rs_read_int(inf,&s->s_arm);
rs_read_int(inf,&s->s_hpt);
rs_read_chars(inf,s->s_dmg,sizeof(s->s_dmg));
rs_read_int(inf,&s->s_maxhp);
return(READSTAT);
}
int
rs_write_stone_index(FILE *savef, STONE master[], int max, const char *str)
{
int i;
if (write_error)
return(WRITESTAT);
for(i = 0; i < max; i++)
if (str == master[i].st_name)
{
rs_write_int(savef,i);
return(WRITESTAT);
}
rs_write_int(savef,-1);
return(WRITESTAT);
}
int
rs_read_stone_index(FILE *inf, STONE master[], int maxindex, char **str)
{
int i = 0;
if (read_error || format_error)
return(READSTAT);
rs_read_int(inf,&i);
if (i > maxindex)
format_error = TRUE;
else if (i >= 0)
*str = master[i].st_name;
else
*str = NULL;
return(READSTAT);
}
int
rs_write_scrolls(FILE *savef)
{
int i;
if (write_error)
return(WRITESTAT);
for(i = 0; i < MAXSCROLLS; i++)
rs_write_string(savef, s_names[i]);
return(READSTAT);
}
int
rs_read_scrolls(FILE *inf)
{
int i;
if (read_error || format_error)
return(READSTAT);
for(i = 0; i < MAXSCROLLS; i++)
rs_read_new_string(inf, &s_names[i]);
return(READSTAT);
}
int
rs_write_potions(FILE *savef)
{
int i;
if (write_error)
return(WRITESTAT);
for(i = 0; i < MAXPOTIONS; i++)
rs_write_string_index(savef, rainbow, cNCOLORS, p_colors[i]);
return(WRITESTAT);
}
int
rs_read_potions(FILE *inf)
{
int i;
if (read_error || format_error)
return(READSTAT);
for(i = 0; i < MAXPOTIONS; i++)
rs_read_string_index(inf, rainbow, cNCOLORS, &p_colors[i]);
return(READSTAT);
}
int
rs_write_rings(FILE *savef)
{
int i;
if (write_error)
return(WRITESTAT);
for(i = 0; i < MAXRINGS; i++)
rs_write_stone_index(savef, stones, cNSTONES, r_stones[i]);
return(WRITESTAT);
}
int
rs_read_rings(FILE *inf)
{
int i;
if (read_error || format_error)
return(READSTAT);
for(i = 0; i < MAXRINGS; i++)
rs_read_stone_index(inf, stones, cNSTONES, &r_stones[i]);
return(READSTAT);
}
int
rs_write_sticks(FILE *savef)
{
int i;
if (write_error)
return(WRITESTAT);
for (i = 0; i < MAXSTICKS; i++)
{
if (strcmp(ws_type[i],"staff") == 0)
{
rs_write_int(savef,0);
rs_write_string_index(savef, wood, cNWOOD, ws_made[i]);
}
else
{
rs_write_int(savef,1);
rs_write_string_index(savef, metal, cNMETAL, ws_made[i]);
}
}
return(WRITESTAT);
}
int
rs_read_sticks(FILE *inf)
{
int i = 0, list = 0;
if (read_error || format_error)
return(READSTAT);