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annotate srogue/rings.c @ 110:5f51f7d9805f

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arogue5: fix some save/restore-related crashes. The save/restore code took the pointer intended as an argument for the doctor() daemon and wrote it to the savefile as an int. I don't know why it took so long to fail horribly. The problem has been avoided by replacing the value with &player when restoring. That seems to be the only argument ever actually used. The code also writes only four bytes for an unsigned long; if sizeof(long) == 8, it casts to unsigned int first. It failed to do the cast when reading back, with the result that four bytes were read and the other half of the number was effectively uninitialized. It apparently works now, but the save/restore code ought still to be regarded as decidedly unfortunate.
author John "Elwin" Edwards
date Mon, 06 Jan 2014 15:57:17 -0500
parents 3aa87373c908
children 94a0d9dd5ce1
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36
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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 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
60
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17 #include <stdlib.h>
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18 #include <string.h>
36
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19 #include "rogue.h"
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20 #include "rogue.ext"
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21
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22 /*
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23 * ring_on:
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24 * Put on a ring
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25 */
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26 ring_on()
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27 {
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28 reg struct object *obj;
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29 reg struct linked_list *item;
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30 reg int ring, wh;
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31 char buf[LINLEN];
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32 bool okring;
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33
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34 if (cur_ring[LEFT] != NULL && cur_ring[RIGHT] != NULL) {
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35 msg("Already wearing two rings.");
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36 after = FALSE;
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37 return;
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38 }
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39 /*
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40 * Make certain that it is somethings that we want to wear
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41 */
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42 if ((item = get_item("put on", RING)) == NULL)
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43 return;
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44 obj = OBJPTR(item);
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45 if (obj->o_type != RING) {
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46 msg("That won't fit on your finger.");
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47 return;
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48 }
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49 /*
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50 * find out which hand to put it on
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51 */
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52 if (is_current(obj))
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53 return;
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54 if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL) {
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55 if ((ring = gethand(FALSE)) < 0)
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56 return;
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57 }
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58 else if (cur_ring[LEFT] == NULL)
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59 ring = LEFT;
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60 else
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61 ring = RIGHT;
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62 cur_ring[ring] = obj;
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63 wh = obj->o_which;
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64 /*
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65 * okring = FALSE when:
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66 * 1) ring is cursed and benefit = plus
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67 * 2) ring is blessed and benefit = minus
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68 */
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69 okring = !((obj->o_ac > 0 && o_on(obj, ISCURSED)) ||
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70 (obj->o_ac < 0 && o_on(obj, ISBLESS)));
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71 /*
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72 * Calculate the effect it has on the poor guy (if possible).
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73 */
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74 if (okring) {
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75 switch (wh) {
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76 case R_SPEED:
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77 if (--obj->o_ac < 0) {
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78 obj->o_ac = 0;
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79 setoflg(obj,ISCURSED);
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80 }
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81 else {
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82 add_haste(FALSE);
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83 msg("You find yourself moving must faster.");
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84 }
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85 when R_GIANT: /* to 24 */
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86 him->s_ef.a_str = MAXSTR;
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87 when R_ADDSTR:
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88 chg_abil(STR,obj->o_ac,FROMRING);
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89 when R_KNOW:
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90 chg_abil(WIS,obj->o_ac,FROMRING);
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91 when R_DEX:
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92 chg_abil(DEX,obj->o_ac,FROMRING);
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93 when R_CONST:
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94 chg_abil(CON,obj->o_ac,FROMRING);
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95 when R_SEEINVIS:
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96 player.t_flags |= CANSEE;
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97 light(&hero);
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98 mvwaddch(cw, hero.y, hero.x, PLAYER);
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99 when R_AGGR:
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100 aggravate();
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101 when R_HEAVY:
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102 updpack(); /* new pack weight */
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103 when R_BLIND:
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104 r_know[R_BLIND] = TRUE;
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105 player.t_flags |= ISBLIND;
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