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annotate rogue3/pack.c @ 81:0e212d46b68f

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rogue4: don't put savefile metadata into the savefile. The save_file() function in save.c stored the savefile's device number, inode number, creation time, and modification time in the file. The restore() function read them back, and apparently used to compare them to protect against cheaters. Unfortunately, the types and sizes of these numbers differ from system to system, which ruins the Roguelike Restoration Project's fine portability work. So they have been removed from the savefile. This BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by excising the chunk starting at offset 0x22 with length sizeof(ino_t) + sizeof(dev_t) + 2 * sizeof(time_t). That's 0x14 on i686 and 0x20 on x86_64, at least with current versions of Linux and glibc.
author John "Elwin" Edwards
date Mon, 05 Aug 2013 20:49:41 -0700
parents 527e2150eaf0
children d9e44e18eeec
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1 /*
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2 * Routines to deal with the pack
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3 *
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4 * @(#)pack.c 3.6 (Berkeley) 6/15/81
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include "curses.h"
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14 #include <ctype.h>
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15 #include "rogue.h"
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16
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17 /*
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18 * add_pack:
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19 * Pick up an object and add it to the pack. If the argument is non-null
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20 * use it as the linked_list pointer instead of gettting it off the ground.
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21 */
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22 void
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23 add_pack(struct linked_list *item, int silent)
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24 {
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25 struct linked_list *ip, *lp;
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26 struct object *obj, *op;
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27 int exact, from_floor;
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28
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29 if (item == NULL)
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30 {
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31 from_floor = TRUE;
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32 if ((item = find_obj(hero.y, hero.x)) == NULL)
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33 return;
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34 }
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35 else
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36 from_floor = FALSE;
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37 obj = (struct object *) ldata(item);
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38 /*
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39 * Link it into the pack. Search the pack for a object of similar type
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40 * if there isn't one, stuff it at the beginning, if there is, look for one
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41 * that is exactly the same and just increment the count if there is.
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42 * it that. Food is always put at the beginning for ease of access, but
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43 * is not ordered so that you can't tell good food from bad. First check
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44 * to see if there is something in thr same group and if there is then
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45 * increment the count.
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46 */
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47 if (obj->o_group)
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48 {
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49 for (ip = pack; ip != NULL; ip = next(ip))
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50 {
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51 op = (struct object *) ldata(ip);
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52 if (op->o_group == obj->o_group)
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53 {
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54 /*
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55 * Put it in the pack and notify the user
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56 */
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57 op->o_count++;
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58 if (from_floor)
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59 {
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60 detach(lvl_obj, item);
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61 mvaddch(hero.y, hero.x,
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62 (roomin(&hero) == NULL ? PASSAGE : FLOOR));
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63 }
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64 discard(item);
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65 item = ip;
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66 goto picked_up;
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67 }
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68 }
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69 }
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70 /*
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71 * Check if there is room
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72 */
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73 if (inpack == MAXPACK-1)
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74 {
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75 msg("You can't carry anything else.");
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76 return;
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77 }
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78 /*
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79 * Check for and deal with scare monster scrolls
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80 */
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81 if (obj->o_type == SCROLL && obj->o_which == S_SCARE)
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82 if (obj->o_flags & ISFOUND)
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83 {
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84 msg("The scroll turns to dust as you pick it up.");
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85 detach(lvl_obj, item);
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86 mvaddch(hero.y, hero.x, FLOOR);
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87 return;
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88 }
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89 else
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90 obj->o_flags |= ISFOUND;
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91
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92 inpack++;
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93 if (from_floor)
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94 {
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95 detach(lvl_obj, item);
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96 mvaddch(hero.y, hero.x, (roomin(&hero) == NULL ? PASSAGE : FLOOR));
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97 }
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98 /*
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99 * Search for an object of the same type
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100 */
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101 exact = FALSE;
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102 for (ip = pack; ip != NULL; ip = next(ip))
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103 {
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104 op = (struct object *) ldata(ip);
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105 if (obj->o_type == op->o_type)