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annotate rogue3/rings.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
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1 /*
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2 * routines dealing specifically with rings
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3 *
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4 * @(#)rings.c 3.17 (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 <stdlib.h>
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15 #include <string.h>
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16 #include "rogue.h"
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17
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18 void
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19 ring_on()
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20 {
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21 struct object *obj;
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22 struct linked_list *item;
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23 int ring;
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24 str_t save_max;
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25 char buf[80];
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26
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27 item = get_item("put on", RING);
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28 /*
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29 * Make certain that it is somethings that we want to wear
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30 */
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31 if (item == NULL)
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32 return;
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33 obj = (struct object *) ldata(item);
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34 if (obj->o_type != RING)
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35 {
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36 if (!terse)
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37 msg("It would be difficult to wrap that around a finger");
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38 else
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39 msg("Not a ring");
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40 return;
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41 }
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42
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43 /*
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44 * find out which hand to put it on
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45 */
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46 if (is_current(obj))
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47 return;
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48
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49 if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
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50 {
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51 if ((ring = gethand()) < 0)
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52 return;
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53 }
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54 else if (cur_ring[LEFT] == NULL)
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55 ring = LEFT;
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56 else if (cur_ring[RIGHT] == NULL)
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57 ring = RIGHT;
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58 else
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59 {
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60 if (!terse)
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61 msg("You already have a ring on each hand");
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62 else
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63 msg("Wearing two");
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64 return;
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65 }
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66 cur_ring[ring] = obj;
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67
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68 /*
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69 * Calculate the effect it has on the poor guy.
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70 */
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71 switch (obj->o_which)
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72 {
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73 case R_ADDSTR:
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74 save_max = max_stats.s_str;
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75 chg_str(obj->o_ac);
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76 max_stats.s_str = save_max;
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77 break;
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78 case R_SEEINVIS:
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79 player.t_flags |= CANSEE;
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80 light(&hero);
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81 mvwaddch(cw, hero.y, hero.x, PLAYER);
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82 break;
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83 case R_AGGR:
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84 aggravate();
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85 break;
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86 }
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87 status();
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88
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89 if (obj->o_which >= MAXRINGS)
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90 return;
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91
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92 if (r_know[obj->o_which] && r_guess[obj->o_which])
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93 {
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94 free(r_guess[obj->o_which]);
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95 r_guess[obj->o_which] = NULL;
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96 }
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97 else if (!r_know[obj->o_which] && askme && r_guess[obj->o_which] == NULL)
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98 {
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99 mpos = 0;
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100 msg(terse ? "Call it: " : "What do you want to call it? ");
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101 if (get_str(buf, cw) == NORM)
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102 {
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103 r_guess[obj->o_which] = malloc(strlen(buf) + 1);
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104 if (r_guess[obj->o_which] != NULL)
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105 strcpy(r_guess[obj->o_which], buf);
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