--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rogue5/state.c	Mon May 24 20:10:59 2010 +0000
@@ -0,0 +1,1450 @@
+/*
+    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 <errno.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 )
+
+void
+rs_write(FILE *savef, const void *ptr, size_t size)
+{
+    encwrite(ptr, size, savef);
+}
+
+void
+rs_read(FILE *savef, void *ptr, size_t size)
+{
+    encread(ptr, size, savef);
+}
+
+void
+rs_write_int(FILE *savef, int c)
+{
+    char bytes[4];
+    char *buf = (char *) &c;
+
+    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);
+}
+
+void
+rs_read_int(FILE *savef, int *i)
+{
+    char bytes[4];
+    int input = 0;
+    char *buf = (char *)&input;
+    
+    rs_read(savef, &input, 4);
+
+    if (encerror())
+	return;
+
+    if (big_endian)
+    {
+        bytes[3] = buf[0];
+        bytes[2] = buf[1];
+        bytes[1] = buf[2];
+        bytes[0] = buf[3];
+        buf = bytes;
+    }
+    
+    *i = *((int *) buf);
+}
+
+void
+rs_write_uint(FILE *savef, unsigned int c)
+{
+    char bytes[4];
+    char *buf = (char *) &c;
+
+    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);
+}
+
+void
+rs_read_uint(FILE *savef, unsigned int *i)
+{
+    char bytes[4];
+    int input = 0;
+    char *buf = (char *)&input;
+    
+    rs_read(savef, &input, 4);
+
+    if (encerror())
+	return;
+
+    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);
+}
+
+void
+rs_write_chars(FILE *savef, const char *c, int cnt)
+{
+    rs_write_int(savef, cnt);
+    rs_write(savef, c, cnt);
+}
+
+void
+rs_read_chars(FILE *savef, char *i, int cnt)
+{
+    int value = 0;  
+
+    rs_read_int(savef, &value);
+    
+    if (!encerror() && (value != cnt))
+	encseterr(EILSEQ);
+
+    rs_read(savef, i, cnt);
+}
+
+void
+rs_write_ints(FILE *savef, int *c, int cnt)
+{
+    int n = 0;
+
+    rs_write_int(savef, cnt);
+
+    for(n = 0; n < cnt; n++)
+        rs_write_int(savef,c[n]);
+}
+
+void
+rs_read_ints(FILE *savef, int *i, int cnt)
+{
+    int n, value;
+    
+    rs_read_int(savef,&value);
+
+    if (!encerror() && (value != cnt))
+	encseterr(EILSEQ);
+
+    for(n = 0; n < cnt; n++)
+        rs_read_int(savef, &i[n]);
+}
+
+void
+rs_write_marker(FILE *savef, int id)
+{
+    rs_write_int(savef, id);
+}
+
+void
+rs_read_marker(FILE *savef, int id)
+{
+    int nid;
+
+    rs_read_int(savef, &nid);
+
+    if (!encerror() && (id != nid))
+	encseterr(EILSEQ);
+}
+
+/******************************************************************************/
+
+void
+rs_write_string(FILE *savef, const char *s)
+{
+    int len = 0;
+
+    len = (s == NULL) ? 0 : (int) strlen(s) + 1;
+
+    rs_write_int(savef, len);
+    rs_write_chars(savef, s, len);
+}
+
+void
+rs_read_string(FILE *savef, char *s, int max)
+{
+    int len = 0;
+
+    rs_read_int(savef, &len);
+
+    if (!encerror() && (len > max))
+	encseterr(EILSEQ);
+
+    rs_read_chars(savef, s, len);
+}
+
+void
+rs_read_new_string(FILE *savef, char **s)
+{
+    int len=0;
+    char *buf=0;
+
+    rs_read_int(savef, &len);
+
+    if (encerror())
+	return;
+
+    if (len == 0)
+        buf = NULL;
+    else
+    { 
+        buf = malloc(len);
+
+        if (buf == NULL)            
+            encseterr(ENOMEM);
+    }
+
+    rs_read_chars(savef, buf, len);
+
+    *s = buf;
+}
+
+void
+rs_write_string_index(FILE *savef, const char *master[], int max, const char *str)
+{
+    int i;
+
+    for(i = 0; i < max; i++)
+        if (str == master[i])
+	{
+            rs_write_int(savef, i);
+	    return;
+	}
+
+    rs_write_int(savef,-1);
+}
+
+void
+rs_read_string_index(FILE *savef, const char *master[], int maxindex, const char **str)
+{
+    int i;
+
+    rs_read_int(savef, &i);
+
+    if (!encerror() && (i > maxindex))
+        encseterr(EILSEQ);
+    else if (i >= 0)
+        *str = master[i];
+    else
+        *str = NULL;
+}
+
+void
+rs_write_coord(FILE *savef, coord c)
+{
+    rs_write_int(savef, c.x);
+    rs_write_int(savef, c.y);
+}
+
+void
+rs_read_coord(FILE *savef, coord *c)
+{
+    coord in;
+
+    rs_read_int(savef,&in.x);
+    rs_read_int(savef,&in.y);
+
+    if (!encerror()) 
+    {
+        c->x = in.x;
+        c->y = in.y;
+    }
+}
+
+void
+rs_write_window(FILE *savef, WINDOW *win)
+{
+    int row,col,height,width;
+
+    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++)
+            rs_write_int(savef, mvwinch(win,row,col));
+}
+
+void
+rs_read_window(FILE *savef, WINDOW *win)
+{
+    int row,col,maxlines,maxcols,value,width,height;
+    
+    width  = getmaxx(win);
+    height = getmaxy(win);
+
+    rs_read_marker(savef, RSID_WINDOW);
+
+    rs_read_int(savef, &maxlines);
+    rs_read_int(savef, &maxcols);
+
+    if (encerror())
+	return;
+
+    for(row = 0; row < maxlines; row++)
+        for(col = 0; col < maxcols; col++)
+        {
+            rs_read_int(savef, &value);
+
+            if ((row < height) && (col < width))
+                mvwaddch(win,row,col,value);
+        }
+}
+
+/******************************************************************************/
+
+void *
+get_list_item(THING *l, int i)
+{
+    int cnt;
+
+    for(cnt = 0; l != NULL; cnt++, l = l->l_next)
+        if (cnt == i)
+            return(l);
+    
+    return(NULL);
+}
+
+int
+find_list_ptr(THING *l, void *ptr)
+{
+    int cnt;
+
+    for(cnt = 0; l != NULL; cnt++, l = l->l_next)
+        if (l == ptr)
+            return(cnt);
+    
+    return(-1);
+}
+
+int
+list_size(THING *l)
+{
+    int cnt;
+    
+    for(cnt = 0; l != NULL; cnt++, l = l->l_next)
+        ;
+    
+    return(cnt);
+}
+
+/******************************************************************************/
+
+void
+rs_write_stats(FILE *savef, struct stats *s)
+{
+    rs_write_marker(savef, RSID_STATS);
+    rs_write_int(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);
+}
+
+void
+rs_read_stats(FILE *savef, struct stats *s)
+{
+    rs_read_marker(savef, RSID_STATS);
+    rs_read_int(savef,&s->s_str);
+    rs_read_int(savef,&s->s_exp);
+    rs_read_int(savef,&s->s_lvl);
+    rs_read_int(savef,&s->s_arm);
+    rs_read_int(savef,&s->s_hpt);
+    rs_read_chars(savef,s->s_dmg,sizeof(s->s_dmg));
+    rs_read_int(savef,&s->s_maxhp);
+}
+
+void
+rs_write_stone_index(FILE *savef, const STONE master[], int max, const char *str)
+{
+    int i;
+
+    for(i = 0; i < max; i++)
+        if (str == master[i].st_name)
+	{
+            rs_write_int(savef,i);
+	    return;
+	}
+
+    rs_write_int(savef,-1);
+}
+
+void
+rs_read_stone_index(FILE *savef, const STONE master[], int maxindex, const char **str)
+{
+    int i = 0;
+
+    rs_read_int(savef,&i);
+
+    if (!encerror() && (i > maxindex))
+        encseterr(EILSEQ);
+    else if (i >= 0)
+        *str = master[i].st_name;
+    else
+        *str = NULL;
+}
+
+void
+rs_write_scrolls(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXSCROLLS; i++)
+        rs_write_string(savef, s_names[i]);
+}
+
+void
+rs_read_scrolls(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXSCROLLS; i++)
+        rs_read_new_string(savef, &s_names[i]);
+}
+
+void
+rs_write_potions(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXPOTIONS; i++)
+        rs_write_string_index(savef, rainbow, cNCOLORS, p_colors[i]);
+}
+
+void
+rs_read_potions(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXPOTIONS; i++)
+        rs_read_string_index(savef, rainbow, cNCOLORS, &p_colors[i]);
+}
+
+void
+rs_write_rings(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXRINGS; i++)
+        rs_write_stone_index(savef, stones, cNSTONES, r_stones[i]);
+}
+
+void
+rs_read_rings(FILE *savef)
+{
+    int i;
+
+    for(i = 0; i < MAXRINGS; i++)
+        rs_read_stone_index(savef, stones, cNSTONES, &r_stones[i]);
+}
+
+void
+rs_write_sticks(FILE *savef)
+{
+    int i;
+
+    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]);
+        }
+    }
+}
+        
+void
+rs_read_sticks(FILE *savef)
+{
+    int i = 0, list = 0;
+
+    for(i = 0; i < MAXSTICKS; i++)
+    { 
+        rs_read_int(savef,&list);
+
+        if (list == 0)
+        {
+            rs_read_string_index(savef, wood, cNWOOD, &ws_made[i]);
+            ws_type[i] = "staff";
+        }
+        else 
+        {
+            rs_read_string_index(savef, metal, cNMETAL, &ws_made[i]);
+            ws_type[i] = "wand";
+        }
+    }
+}
+
+void
+rs_write_daemons(FILE *savef, struct delayed_action *dlist, int cnt)
+{
+    int i = 0;
+    int func = 0;
+        
+    rs_write_marker(savef, RSID_DAEMONS);
+    rs_write_int(savef, cnt);
+        
+    for(i = 0; i < cnt; i++)
+    {
+        if (dlist[i].d_func == rollwand)
+            func = 1;
+        else if (dlist[i].d_func == doctor)
+            func = 2;
+        else if (dlist[i].d_func == stomach)
+            func = 3;
+        else if (dlist[i].d_func == runners)
+            func = 4;
+        else if (dlist[i].d_func == swander)
+            func = 5;
+        else if (dlist[i].d_func == nohaste)
+            func = 6;
+        else if (dlist[i].d_func == unconfuse)
+            func = 7;
+        else if (dlist[i].d_func == unsee)
+            func = 8;
+        else if (dlist[i].d_func == sight)
+            func = 9;
+        else if (dlist[i].d_func == NULL)
+            func = 0;
+        else
+            func = -1;
+
+        rs_write_int(savef, dlist[i].d_type);
+        rs_write_int(savef, func);
+        rs_write_int(savef, dlist[i].d_arg);
+        rs_write_int(savef, dlist[i].d_time);
+    }
+}       
+
+void
+rs_read_daemons(FILE *savef, struct delayed_action *dlist, int cnt)
+{
+    int i = 0;
+    int func = 0;
+    int value = 0;
+    
+    rs_read_marker(savef, RSID_DAEMONS);
+    rs_read_int(savef, &value);
+
+    if (!encerror() && (value > cnt))
+    {
+	encseterr(EILSEQ);
+	return;
+    }
+
+    for(i=0; i < cnt; i++)
+    {
+        func = 0;
+        rs_read_int(savef, &dlist[i].d_type);
+        rs_read_int(savef, &func);
+        rs_read_int(savef, &dlist[i].d_arg);
+        rs_read_int(savef, &dlist[i].d_time);
+
+	if (encerror())
+	    return;
+                    
+        switch(func)
+        {
+            case 1: dlist[i].d_func = rollwand;
+                    break;
+            case 2: dlist[i].d_func = doctor;
+                    break;
+            case 3: dlist[i].d_func = stomach;
+                    break;
+            case 4: dlist[i].d_func = runners;
+                    break;
+            case 5: dlist[i].d_func = swander;
+                    break;
+            case 6: dlist[i].d_func = nohaste;
+                    break;
+            case 7: dlist[i].d_func = unconfuse;
+                    break;
+            case 8: dlist[i].d_func = unsee;
+                    break;
+            case 9: dlist[i].d_func = sight;
+                    break;
+            default:dlist[i].d_func = NULL;
+                    break;
+        }
+    }
+
+    if (dlist[i].d_func == NULL)
+    {
+        dlist[i].d_type = 0;
+        dlist[i].d_arg = 0;
+        dlist[i].d_time = 0;
+    }
+}       
+        
+void
+rs_write_obj_info(FILE *savef, struct obj_info *i, int cnt)
+{
+    int n;
+    
+    rs_write_marker(savef, RSID_MAGICITEMS);
+    rs_write_int(savef, cnt);
+
+    for(n = 0; n < cnt; n++)
+    {
+        /* oi_name is constant, defined at compile time in all cases */
+        rs_write_int(savef,i[n].oi_prob);
+        rs_write_int(savef,i[n].oi_worth);
+        rs_write_string(savef,i[n].oi_guess);
+        rs_write_int(savef,i[n].oi_know);
+    }
+}
+
+void
+rs_read_obj_info(FILE *savef, struct obj_info *mi, int cnt)
+{
+    int n;
+    int value;
+
+    rs_read_marker(savef, RSID_MAGICITEMS);
+
+    rs_read_int(savef, &value);
+
+    if (!encerror() && (value > cnt))
+    {
+	encseterr(EILSEQ);
+	return;
+    }