Mercurial > hg > early-roguelike
annotate srogue/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 | 2128c7dc8a40 |
children | 94a0d9dd5ce1 |
rev | line source |
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36
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1 /* |
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2 * Code for one object to chase another |
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3 * |
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4 * @(#)chase.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 "rogue.h" |
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18 #include "rogue.ext" |
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19 |
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20 #define FARAWAY 32767 |
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21 #define RDIST(a, b) (DISTANCE((a)->y, (a)->x, (b).y, (b).x)) |
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22 |
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23 struct coord ch_ret; /* Where chasing takes you */ |
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24 |
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25 /* |
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26 * runners: |
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27 * Make all the running monsters move. |
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28 */ |
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29 runners() |
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30 { |
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31 reg struct thing *tp; |
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32 reg struct linked_list *mon,*nextmon; |
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33 |
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34 for (mon = mlist; mon != NULL; mon = nextmon) { |
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35 tp = THINGPTR(mon); |
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36 nextmon = next(mon); |
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37 if (off(*tp, ISHELD) && on(*tp, ISRUN)) { |
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38 if (tp->t_nomove > 0) |
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39 if (--tp->t_nomove > 0) |
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40 continue; |
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41 if (on(*tp, ISHASTE)) |
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42 if (do_chase(mon) == -1) |
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43 continue; |
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44 if (off(*tp, ISSLOW) || tp->t_turn) |
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45 if (do_chase(mon) == -1) |
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46 continue; |
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47 tp->t_turn ^= TRUE; |
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48 } |
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49 } |
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50 } |
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51 |
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52 |
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53 /* |
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54 * do_chase: |
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55 * Make one thing chase another. |
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56 */ |
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57 do_chase(mon) |
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58 struct linked_list *mon; |
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59 { |
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60 reg struct thing *th; |
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61 reg struct room *rer, *ree, *rxx; |
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62 reg int mindist, i, dist; |
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63 struct stats *st; |
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64 bool stoprun = FALSE, ondoor = FALSE, link = FALSE; |
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65 char runaway, dofight, wound, sch, ch; |
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66 struct coord this; |
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67 struct trap *trp; |
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68 |
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69 th = THINGPTR(mon); |
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70 wound = th->t_flags & ISWOUND; |
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71 if (wound) |
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72 mindist = 0; |
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73 else |
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74 mindist = FARAWAY; |
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75 runaway = wound; |
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76 dofight = !runaway; |
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77 rer = th->t_room; |
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78 if (th->t_type == 'V') { |
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79 if (rer != NULL && !rf_on(rer, ISDARK)) { |
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80 /* |
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81 * Vampires can't stand the light |
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82 */ |
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83 if (cansee(th->t_pos.y, th->t_pos.x)) |
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84 msg("The vampire vaporizes into thin air !"); |
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85 killed(mon, FALSE); |
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86 return(-1); |
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87 } |
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88 } |
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89 ree = roomin(th->t_dest); /* room of chasee */ |
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90 this = *th->t_dest; |
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91 /* |
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92 * If the object of our desire is in a different |
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93 * room, then run to the door nearest to our goal. |
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94 */ |
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95 if (mvinch(th->t_pos.y, th->t_pos.x) == DOOR) |
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96 ondoor = TRUE; |
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97 rxx = NULL; |
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98 if (rer != NULL || ree != NULL) { |
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99 /* |
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100 * Monster not in room, hero in room. Run to closest door |
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101 * in hero's room if not wounded. Run away if wounded. |
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102 */ |
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103 if (rer == NULL && ree != NULL) { |
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104 if (!wound) |
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105 rxx = ree; |
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