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annotate srogue/weapons.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 2128c7dc8a40
children 94a0d9dd5ce1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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36
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1 /*
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2 * Functions for dealing with weapons
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3 *
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4 * @(#)weapons.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
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17 #include <ctype.h>
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18 #include "rogue.h"
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19 #include "rogue.ext"
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20
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21 /*
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22 * missile:
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23 * Fire a missile in a given direction
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24 */
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25 missile(ydelta, xdelta)
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26 int ydelta, xdelta;
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27 {
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28 reg struct object *obj, *nowwield;
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29 reg struct linked_list *item, *nitem;
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30
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31 /*
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32 * Get which thing we are hurling
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33 */
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34 nowwield = cur_weapon; /* must save current weap */
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35 if ((item = get_item("throw", WEAPON)) == NULL)
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36 return;
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37 obj = OBJPTR(item);
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38 if (!dropcheck(obj) || is_current(obj))
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39 return;
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40 if (obj == nowwield || obj->o_type != WEAPON) {
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41 reg int c;
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42
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43 msg("Do you want to throw that %s? (y or n)",obj->o_typname);
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44 do {
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45 c = readchar();
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46 if (isupper(c))
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47 c = tolower(c);
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48 if (c == ESCAPE || c == 'n') {
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49 msg("");
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50 cur_weapon = nowwield;
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51 after = FALSE; /* ooops, a mistake */
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52 return;
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53 }
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54 } while (c != 'y'); /* keep looking for good ans */
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55 }
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56 /*
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57 * Get rid of the thing. If it is a non-multiple item object, or
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58 * if it is the last thing, just drop it. Otherwise, create a new
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59 * item with a count of one.
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60 */
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61 if (obj->o_count < 2) {
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62 detach(pack, item);
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63 }
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64 else {
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65 obj->o_count--;
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66 obj->o_vol = itemvol(obj);
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67 nitem = new_item(sizeof *obj);
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68 obj = OBJPTR(nitem);
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69 *obj = *(OBJPTR(item));
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70 obj->o_count = 1;
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71 obj->o_vol = itemvol(obj);
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72 item = nitem;
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73 }
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74 updpack(); /* new pack weight */
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75 do_motion(obj, ydelta, xdelta);
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76 if (!isalpha(mvwinch(mw, obj->o_pos.y, obj->o_pos.x))
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77 || !hit_monster(&obj->o_pos, obj))
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78 fall(item, TRUE);
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79 mvwaddch(cw, hero.y, hero.x, PLAYER);
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80 }
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81
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82 /*
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83 * do the actual motion on the screen done by an object traveling
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84 * across the room
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85 */
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86 do_motion(obj, ydelta, xdelta)
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87 struct object *obj;
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88 int ydelta, xdelta;
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89 {
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90 reg int ch, y, x;
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91
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92 obj->o_pos = hero;
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93 while (1) {
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94 y = obj->o_pos.y;
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95 x = obj->o_pos.x;
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96 if (!ce(obj->o_pos, hero) && cansee(unc(obj->o_pos)) &&
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97 mvwinch(cw, y, x) != ' ')
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98 mvwaddch(cw, y, x, show(y, x));
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99 /*
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100 * Get the new position
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101 */
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102 obj->o_pos.y += ydelta;
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103 obj->o_pos.x += xdelta;
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104 y = obj->o_pos.y;
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105