Mercurial > hg > early-roguelike
annotate rogue5/chase.c @ 111:7f8f43943b1f
Fix some terribly depressing corruption during restore.
In rogue5/state.c, rs_read_daemons() zeroes out the argument and delay
if the daemon slot is empty. Unfortunately that code ended up on the
wrong side of the brace that closes the for loop, so instead of running
after each daemon, it got run once after the loop exited, when the
index was of course out of bounds.
This tended to manifest, when compiled with -O2, by overwriting hw and
setting it to NULL. When inventory() next ran, hw would be passed to
wgetch(), which returns ERR when it gets a NULL argument. This made
md_readchar() think something was wrong and autosave the game.
Upon investigation, rogue3 was found to commit the same mistake.
rogue4 and srogue don't zero the data. arogue5 already does it
properly.
Someday I am going to run all this through Valgrind. Someday when I
am a kinder person who will not be driven to invoke hordes of trolls
and centaurs upon the original authors.
author | John "Elwin" Edwards |
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date | Wed, 08 Jan 2014 16:44:16 -0500 |
parents | f502bf60e6e4 |
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rev | line source |
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33
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1 /* |
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2 * Code for one creature to chase another |
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3 * |
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4 * @(#)chase.c 4.57 (Berkeley) 02/05/99 |
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5 * |
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6 * Rogue: Exploring the Dungeons of Doom |
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7 * Copyright (C) 1980-1983, 1985, 1999 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 <stdlib.h> |
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14 #include <curses.h> |
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15 #include "rogue.h" |
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16 |
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17 #define DRAGONSHOT 5 /* one chance in DRAGONSHOT that a dragon will flame */ |
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18 |
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19 static coord ch_ret; /* Where chasing takes you */ |
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20 |
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21 /* |
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22 * runners: |
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23 * Make all the running monsters move. |
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24 */ |
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25 void |
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26 runners(void) |
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27 { |
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28 THING *tp; |
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29 THING *next; |
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30 int wastarget; |
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31 coord orig_pos; |
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32 |
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33 for (tp = mlist; tp != NULL; tp = next) |
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34 { |
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35 /* remember this in case the monster's "next" is changed */ |
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36 next = next(tp); |
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37 if (!on(*tp, ISHELD) && on(*tp, ISRUN)) |
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38 { |
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39 orig_pos = tp->t_pos; |
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40 wastarget = on(*tp, ISTARGET); |
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41 if (move_monst(tp) == -1) |
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42 continue; |
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43 if (on(*tp, ISFLY) && dist_cp(&hero, &tp->t_pos) >= 3) |
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44 move_monst(tp); |
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45 if (wastarget && !ce(orig_pos, tp->t_pos)) |
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46 { |
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47 tp->t_flags &= ~ISTARGET; |
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48 to_death = FALSE; |
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49 } |
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50 } |
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51 } |
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52 if (has_hit) |
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53 { |
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54 endmsg(); |
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55 has_hit = FALSE; |
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56 } |
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57 } |
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58 |
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59 /* |
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60 * move_monst: |
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61 * Execute a single turn of running for a monster |
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62 */ |
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63 int |
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64 move_monst(THING *tp) |
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65 { |
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66 if (!on(*tp, ISSLOW) || tp->t_turn) |
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67 if (do_chase(tp) == -1) |
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68 return(-1); |
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69 if (on(*tp, ISHASTE)) |
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70 if (do_chase(tp) == -1) |
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71 return(-1); |
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72 tp->t_turn ^= TRUE; |
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73 return(0); |
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74 } |
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75 |
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76 /* |
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77 * relocate: |
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78 * Make the monster's new location be the specified one, updating |
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79 * all the relevant state. |
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80 */ |
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81 void |
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82 relocate(THING *th, const coord *new_loc) |
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83 { |
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84 struct room *oroom; |
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85 |
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86 if (!ce(*new_loc, th->t_pos)) |
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87 { |
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88 mvaddch(th->t_pos.y, th->t_pos.x, th->t_oldch); |
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89 th->t_room = roomin(new_loc); |
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90 set_oldch(th, new_loc); |
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91 oroom = th->t_room; |
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92 moat(th->t_pos.y, th->t_pos.x) = NULL; |
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93 |
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94 if (oroom != th->t_room) |
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95 th->t_dest = find_dest(th); |
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96 th->t_pos = *new_loc; |
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97 moat(new_loc->y, new_loc->x) = th; |
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98 } |
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99 move(new_loc->y, new_loc->x); |
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100 if (see_monst(th)) |
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101 addch(th->t_disguise); |
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102 else if (on(player, SEEMONST)) |
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103 { |
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104 standout(); |
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105 addch(th->t_type); |
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106 standend(); |
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107 } |
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