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annotate rogue3/fight.c @ 83:09db0cf536af

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Properly handle invalid room references in savefiles. In all games, rs_write_room_reference() stored -1 for a nonexistent room, but rs_read_room_reference() did not check for out-of-bounds values, leading to pointers to rooms[-1], which sometimes caused crashes. rs_read_room_reference() has now been modified to use NULL instead. Some of the games required further changes to replace NULL with the pointer to the actual room. Others are capable of handling NULL for objects not in any room.
author John "Elwin" Edwards
date Thu, 08 Aug 2013 12:41:35 -0700
parents 527e2150eaf0
children e7aab31362af
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1 /*
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2 * All the fighting gets done here
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3 *
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4 * @(#)fight.c 3.28 (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 <string.h>
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16 #include <stdlib.h>
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17 #include "rogue.h"
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18
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19 int e_levels[] = {
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20 10,20,40,80,160,320,640,1280,2560,5120,10240,20480,
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21 40920, 81920, 163840, 327680, 655360, 1310720, 2621440, 0 };
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22
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23 /*
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24 * fight:
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25 * The player attacks the monster.
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26 */
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27
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28 int
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29 fight(coord *mp, int mn, struct object *weap, int thrown)
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30 {
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31 struct thing *tp;
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32 struct linked_list *item;
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33 int did_hit = TRUE;
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34
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35 /*
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36 * Find the monster we want to fight
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37 */
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38 if ((item = find_mons(mp->y, mp->x)) == NULL)
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39 {
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40 debug("Fight what @ %d,%d", mp->y, mp->x);
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41 return(0);
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42 }
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43 tp = (struct thing *) ldata(item);
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44 /*
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45 * Since we are fighting, things are not quiet so no healing takes
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46 * place.
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47 */
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48 quiet = 0;
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49 runto(mp, &hero);
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50 /*
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51 * Let him know it was really a mimic (if it was one).
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52 */
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53 if (tp->t_type == 'M' && tp->t_disguise != 'M' && off(player, ISBLIND))
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54 {
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55 msg("Wait! That's a mimic!");
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56 tp->t_disguise = 'M';
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57 did_hit = thrown;
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58 }
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59 if (did_hit)
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60 {
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61 char *mname;
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62
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63 did_hit = FALSE;
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64 if (on(player, ISBLIND))
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65 mname = "it";
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66 else
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67 mname = monsters[mn-'A'].m_name;
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68 if (roll_em(&pstats, &tp->t_stats, weap, thrown))
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69 {
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70 did_hit = TRUE;
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71 if (thrown)
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72 thunk(weap, mname);
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73 else
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74 hit(NULL, mname);
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75 if (on(player, CANHUH))
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76 {
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77 msg("Your hands stop glowing red");
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78 msg("The %s appears confused.", mname);
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79 tp->t_flags |= ISHUH;
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80 player.t_flags &= ~CANHUH;
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81 }
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82 if (tp->t_stats.s_hpt <= 0)
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83 killed(item, TRUE);
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84 }
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85 else
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86 if (thrown)
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87 bounce(weap, mname);
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88 else
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89 miss(NULL, mname);
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90 }
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91 count = 0;
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92 return did_hit;
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93 }
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94
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95 /*
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96 * attack:
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97 * The monster attacks the player
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98 */
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99
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100 int
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101 attack(struct thing *mp)
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102 {
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103 char *mname;
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104
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105 /*
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106 * Since this is an attack, stop running and any healing that was