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annotate arogue5/state.c @ 115:1cf517d5d2a8

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arogue5: make alchemy jugs survive a save and restore. Alchemy jugs are refilled by the alchemy() fuse, which takes a pointer to the jug object as an argument. When written to a save file and read back out, the pointer is unlikely to point anywhere useful. Instead, rs_write_daemons() now stores an index into the player's pack or the list of objects on the floor. rs_read_daemons() uses this number to locate the object when restoring. This change should not cause any new issues with old savefiles, but it is unable to make a broken alchemy jug work again.
author John "Elwin" Edwards
date Fri, 28 Mar 2014 15:51:43 -0700
parents a5433ba4cabf
children 56e748983fa8
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1 /*
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2 state.c - Portable Rogue Save State Code
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3
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4 Copyright (C) 1999, 2000, 2005 Nicholas J. Kisseberth
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5 All rights reserved.
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6
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7 Redistribution and use in source and binary forms, with or without
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8 modification, are permitted provided that the following conditions
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9 are met:
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10 1. Redistributions of source code must retain the above copyright
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11 notice, this list of conditions and the following disclaimer.
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12 2. Redistributions in binary form must reproduce the above copyright
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13 notice, this list of conditions and the following disclaimer in the
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14 documentation and/or other materials provided with the distribution.
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15 3. Neither the name(s) of the author(s) nor the names of other contributors
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16 may be used to endorse or promote products derived from this software
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17 without specific prior written permission.
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18
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19 THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
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20 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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22 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
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23 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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24 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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25 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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26 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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27 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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28 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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29 SUCH DAMAGE.
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30 */
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31
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32 /************************************************************************/
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33 /* Save State Code */
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34 /************************************************************************/
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35
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36 #define RSID_STATS 0xABCD0001
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37 #define RSID_MSTATS 0xABCD0002
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38 #define RSID_THING 0xABCD0003
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39 #define RSID_OBJECT 0xABCD0004
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40 #define RSID_MAGICITEMS 0xABCD0005
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41 #define RSID_KNOWS 0xABCD0006
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42 #define RSID_GUESSES 0xABCD0007
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43 #define RSID_OBJECTLIST 0xABCD0008
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44 #define RSID_BAGOBJECT 0xABCD0009
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45 #define RSID_MONSTERLIST 0xABCD000A
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46 #define RSID_MONSTERSTATS 0xABCD000B
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47 #define RSID_MONSTERS 0xABCD000C
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48 #define RSID_TRAP 0xABCD000D
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49 #define RSID_WINDOW 0xABCD000E
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50 #define RSID_DAEMONS 0xABCD000F
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51 #define RSID_STICKS 0xABCD0010
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52 #define RSID_IARMOR 0xABCD0011
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53 #define RSID_SPELLS 0xABCD0012
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54 #define RSID_ILIST 0xABCD0013
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55 #define RSID_HLIST 0xABCD0014
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56 #define RSID_DEATHTYPE 0xABCD0015
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57 #define RSID_CTYPES 0XABCD0016
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58 #define RSID_COORDLIST 0XABCD0017
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59 #define RSID_ROOMS 0XABCD0018
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60
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61 #include <curses.h>
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62 #include <stdio.h>
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63 #include <stdlib.h>
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c49f7927b0fa arogue5: add missing header files.
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64 #include <string.h>
63
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65 #include "rogue.h"
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66
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67 #define READSTAT (format_error || read_error )
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68 #define WRITESTAT (write_error)
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69
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70 static int read_error = FALSE;
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71 static int write_error = FALSE;
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72 static int format_error = FALSE;
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73 static int endian = 0x01020304;
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74 #define big_endian ( *((char *)&endian) == 0x01 )
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75
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76 int
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77 rs_write(FILE *savef, void *ptr, size_t size)
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78 {
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79 if (write_error)
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80 return(WRITESTAT);
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81
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82 if (encwrite(ptr, size, savef) != size)
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83 write_error = 1;
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84
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85 return(WRITESTAT);
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86 }
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87
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88 int
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89 rs_read(int inf, void *ptr, size_t size)
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90 {
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91 if (read_error || format_error)
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92 return(READSTAT);
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93
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94 if (encread(ptr, size, inf) != size)
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95 read_error = 1;
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96
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97 return(READSTAT);
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98 }
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99
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100 int
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101 rs_write_uchar(FILE *savef, unsigned char c)
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102 {
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