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annotate rogue5/scrolls.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 f502bf60e6e4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
33
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1 /*
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2 * Read a scroll and let it happen
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3 *
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4 * @(#)scrolls.c 4.44 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 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 * read_scroll:
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19 * Read a scroll from the pack and do the appropriate thing
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20 */
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21
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22 void
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23 read_scroll(void)
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24 {
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25 THING *obj;
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26 PLACE *pp;
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27 int y, x;
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28 int ch;
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29 int i;
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30 int discardit = FALSE;
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31 struct room *cur_room;
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32 THING *orig_obj;
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33 coord mp;
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34
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35 obj = get_item("read", SCROLL);
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36 if (obj == NULL)
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37 return;
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38 if (obj->o_type != SCROLL)
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39 {
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40 if (!terse)
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41 msg("there is nothing on it to read");
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42 else
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43 msg("nothing to read");
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44 return;
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45 }
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46 /*
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47 * Calculate the effect it has on the poor guy.
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48 */
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49 if (obj == cur_weapon)
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50 cur_weapon = NULL;
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51 /*
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52 * Get rid of the thing
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53 */
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54 discardit = (obj->o_count == 1);
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55 leave_pack(obj, FALSE, FALSE);
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56 orig_obj = obj;
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57
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58 switch (obj->o_which)
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59 {
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60 case S_CONFUSE:
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61 /*
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62 * Scroll of monster confusion. Give him that power.
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63 */
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64 player.t_flags |= CANHUH;
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65 msg("your hands begin to glow %s", pick_color("red"));
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66 when S_ARMOR:
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67 if (cur_armor != NULL)
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68 {
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69 cur_armor->o_arm--;
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70 cur_armor->o_flags &= ~ISCURSED;
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71 msg("your armor glows %s for a moment", pick_color("silver"));
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72 }
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73 when S_HOLD:
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74 /*
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75 * Hold monster scroll. Stop all monsters within two spaces
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76 * from chasing after the hero.
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77 */
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78
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79 ch = 0;
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80 for (x = hero.x - 2; x <= hero.x + 2; x++)
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81 if (x >= 0 && x < NUMCOLS)
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82 for (y = hero.y - 2; y <= hero.y + 2; y++)
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83 if (y >= 0 && y <= NUMLINES - 1)
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84 if ((obj = moat(y, x)) != NULL && on(*obj, ISRUN))
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85 {
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86 obj->t_flags &= ~ISRUN;
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87 obj->t_flags |= ISHELD;
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88 ch++;
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89 }
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90 if (ch)
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91 {
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92 addmsg("the monster");
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93 if (ch > 1)
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94 addmsg("s around you");
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95 addmsg(" freeze");
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96 if (ch == 1)
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97 addmsg("s");
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98 endmsg();
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99 scr_info[S_HOLD].oi_know = TRUE;
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100 }
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101 else
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102 msg("you feel a strange sense of loss");
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103 when S_SLEEP:
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104 /*
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105 * Scroll which makes you fall asleep
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106 */
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