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annotate rogue4/move.c @ 120:d6b7c3fb37ea

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srogue: add and use more md_* portable functions. Privileges and memory usage checks are now more portable.
author John "Elwin" Edwards
date Fri, 02 May 2014 15:06:23 -0700
parents 9535a08ddc39
children 1b73a8641b37
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12
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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 4.24 (Berkeley) 5/12/82
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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, 1982 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 do_run(ch)
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28 char ch;
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29 {
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30 running = TRUE;
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31 after = FALSE;
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32 runch = ch;
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33 }
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34
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35 /*
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36 * do_move:
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37 * Check to see that a move is legal. If it is handle the
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38 * consequences (fighting, picking up, etc.)
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39 */
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40 do_move(dy, dx)
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41 int dy, dx;
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42 {
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43 register char ch, fl;
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44
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45 firstmove = FALSE;
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46 if (no_move)
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47 {
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48 no_move--;
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49 msg("you are still stuck in the bear trap");
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50 return;
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51 }
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52 /*
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53 * Do a confused move (maybe)
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54 */
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55 if (on(player, ISHUH) && rnd(5) != 0)
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56 {
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57 nh = *rndmove(&player);
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58 if (ce(nh, hero))
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59 {
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60 after = FALSE;
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61 running = FALSE;
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62 return;
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63 }
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64 }
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65 else
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66 {
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67 over:
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68 nh.y = hero.y + dy;
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69 nh.x = hero.x + dx;
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70 }
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71
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72 /*
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73 * Check if he tried to move off the screen or make an illegal
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74 * diagonal move, and stop him if he did.
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75 */
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76 if (nh.x < 0 || nh.x > COLS-1 || nh.y < 1 || nh.y > LINES - 2)
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77 goto hit_bound;
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78 if (!diag_ok(&hero, &nh))
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79 {
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80 after = FALSE;
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81 running = FALSE;
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82 return;
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83 }
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84 if (running && ce(hero, nh))
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85 after = running = FALSE;
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86 fl = flat(nh.y, nh.x);
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87 ch = winat(nh.y, nh.x);
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88 if (!(fl & F_REAL) && ch == FLOOR)
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89 {
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90 chat(nh.y, nh.x) = ch = TRAP;
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91 flat(nh.y, nh.x) |= F_REAL;
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92 }
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93 else
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94 if (on(player, ISHELD) && ch != 'F')
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95 {
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96 msg("you are being held");
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97 return;
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98 }
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99 switch (ch)
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100 {
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101 case ' ':
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102 case '|':
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103 case '-':
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104 hit_bound:
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105 if (passgo && running && (proom->r_flags & ISGONE)
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106 && !on(player, ISBLIND))
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107 {
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