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annotate rogue3/weapons.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 84651832f967
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1 /*
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2 * Functions for dealing with problems brought about by weapons
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3 *
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4 * @(#)weapons.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 <ctype.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 #define NONE 100
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19
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20 char *w_names[MAXWEAPONS] = {
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21 "mace",
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22 "long sword",
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23 "int bow",
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24 "arrow",
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25 "dagger",
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26 "rock",
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27 "two handed sword",
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28 "sling",
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29 "dart",
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30 "crossbow",
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31 "crossbow bolt",
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32 "spear",
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33 };
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34
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35 static struct init_weps {
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36 char *iw_dam;
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37 char *iw_hrl;
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38 int iw_launch;
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39 int iw_flags;
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40 } init_dam[MAXWEAPONS] = {
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41 "2d4", "1d3", NONE, 0, /* Mace */
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42 "1d10", "1d2", NONE,0, /* Long sword */
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43 "1d1", "1d1", NONE, 0, /* Bow */
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44 "1d1", "1d6", BOW, ISMANY|ISMISL, /* Arrow */
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45 "1d6", "1d4", NONE, ISMISL, /* Dagger */
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46 "1d2", "1d4", SLING,ISMANY|ISMISL, /* Rock */
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47 "3d6", "1d2", NONE, 0, /* 2h sword */
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48 "0d0", "0d0", NONE, 0, /* Sling */
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49 "1d1", "1d3", NONE, ISMANY|ISMISL, /* Dart */
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50 "1d1", "1d1", NONE, 0, /* Crossbow */
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51 "1d2", "1d10", CROSSBOW, ISMANY|ISMISL,/* Crossbow bolt */
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52 "1d8", "1d6", NONE, ISMISL, /* Spear */
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53 };
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54
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55 /*
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56 * missile:
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57 * Fire a missile in a given direction
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58 */
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59
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60 void
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61 missile(int ydelta, int xdelta)
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62 {
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63 struct object *obj;
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64 struct linked_list *item, *nitem;
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65
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66 /*
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67 * Get which thing we are hurling
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68 */
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69 if ((item = get_item("throw", WEAPON)) == NULL)
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70 return;
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71 obj = (struct object *) ldata(item);
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72 if (!dropcheck(obj) || is_current(obj))
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73 return;
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74 /*
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75 * Get rid of the thing. If it is a non-multiple item object, or
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76 * if it is the last thing, just drop it. Otherwise, create a new
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77 * item with a count of one.
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78 */
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79 if (obj->o_count < 2)
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80 {
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81 detach(pack, item);
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82 inpack--;
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83 }
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84 else
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85 {
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86 obj->o_count--;
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87 if (obj->o_group == 0)
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88 inpack--;
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89 nitem = (struct linked_list *) new_item(sizeof *obj);
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90 obj = (struct object *) ldata(nitem);
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91 *obj = *((struct object *) ldata(item));
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92 obj->o_count = 1;
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93 item = nitem;
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94 }
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95 do_motion(obj, ydelta, xdelta);
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96 /*
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97 * AHA! Here it has hit something. If it is a wall or a door,
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98 * or if it misses (combat) the mosnter, put it on the floor
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99 */
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100 if (!isupper(mvwinch(mw, obj->o_pos.y, obj->o_pos.x))
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101 || !hit_monster(unc(obj->o_pos), obj))
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102 fall(item, TRUE);
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103 mvwaddch(cw, hero.y, hero.x, PLAYER);
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