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annotate rogue3/move.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 527e2150eaf0
children d9e44e18eeec
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1 /*
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2 * Hero movement commands
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3 *
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4 * @(#)move.c 3.26 (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 "rogue.h"
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16
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17 /*
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18 * Used to hold the new hero position
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19 */
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20
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21 coord nh;
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22
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23 /*
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24 * do_run:
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25 * Start the hero running
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26 */
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27
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28 void
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29 do_run(int ch)
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30 {
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31 running = TRUE;
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32 after = FALSE;
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33 runch = ch;
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34 }
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35
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36 /*
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37 * do_move:
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38 * Check to see that a move is legal. If it is handle the
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39 * consequences (fighting, picking up, etc.)
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40 */
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41
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42 void
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43 do_move(int dy, int dx)
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44 {
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45 int ch;
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46
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47 firstmove = FALSE;
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48 if (no_move)
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49 {
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50 no_move--;
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51 msg("You are still stuck in the bear trap");
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52 return;
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53 }
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54 /*
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55 * Do a confused move (maybe)
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56 */
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57 if (rnd(100) < 80 && on(player, ISHUH))
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58 nh = *rndmove(&player);
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59 else
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60 {
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61 nh.y = hero.y + dy;
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62 nh.x = hero.x + dx;
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63 }
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64
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65 /*
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66 * Check if he tried to move off the screen or make an illegal
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67 * diagonal move, and stop him if he did.
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68 */
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69 if (nh.x < 0 || nh.x > COLS-1 || nh.y < 0 || nh.y > LINES - 1
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70 || !diag_ok(&hero, &nh))
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71 {
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72 after = FALSE;
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73 running = FALSE;
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74 return;
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75 }
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76 if (running && ce(hero, nh))
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77 after = running = FALSE;
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78 ch = winat(nh.y, nh.x);
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79 if (on(player, ISHELD) && ch != 'F')
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80 {
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81 msg("You are being held");
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82 return;
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83 }
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84 switch(ch)
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85 {
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86 case ' ':
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87 case '|':
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88 case '-':
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89 case SECRETDOOR:
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90 after = running = FALSE;
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91 return;
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92 case TRAP:
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93 ch = be_trapped(&nh);
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94 if (ch == TRAPDOOR || ch == TELTRAP)
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95 return;
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96 goto move_stuff;
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97 case GOLD:
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98 case POTION:
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99 case SCROLL:
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100 case FOOD:
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101 case WEAPON:
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102 case ARMOR:
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103 case RING:
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104 case AMULET:
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105 case STICK:
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106 running = FALSE;
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