Mercurial > hg > early-roguelike

annotate srogue/chase.c @ 110:5f51f7d9805f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
arogue5: fix some save/restore-related crashes. The save/restore code took the pointer intended as an argument for the doctor() daemon and wrote it to the savefile as an int. I don't know why it took so long to fail horribly. The problem has been avoided by replacing the value with &player when restoring. That seems to be the only argument ever actually used. The code also writes only four bytes for an unsigned long; if sizeof(long) == 8, it casts to unsigned int first. It failed to do the cast when reading back, with the result that four bytes were read and the other half of the number was effectively uninitialized. It apparently works now, but the save/restore code ought still to be regarded as decidedly unfortunate.
author John "Elwin" Edwards
date Mon, 06 Jan 2014 15:57:17 -0500
parents 2128c7dc8a40
children 94a0d9dd5ce1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
1 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
2 * Code for one object to chase another
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
3 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
4 * @(#)chase.c 9.0 (rdk) 7/17/84
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
5 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
6 * Super-Rogue
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
7 * Copyright (C) 1984 Robert D. Kindelberger
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
8 * All rights reserved.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
9 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
10 * Based on "Rogue: Exploring the Dungeons of Doom"
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
12 * All rights reserved.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
13 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
14 * See the file LICENSE.TXT for full copyright and licensing information.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
15 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
16
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
17 #include "rogue.h"
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
18 #include "rogue.ext"
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
19
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
20 #define FARAWAY 32767
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
21 #define RDIST(a, b) (DISTANCE((a)->y, (a)->x, (b).y, (b).x))
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
22
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
23 struct coord ch_ret; /* Where chasing takes you */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
24
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
25 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
26 * runners:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
27 * Make all the running monsters move.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
28 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
29 runners()
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
30 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
31 reg struct thing *tp;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
32 reg struct linked_list *mon,*nextmon;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
33
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
34 for (mon = mlist; mon != NULL; mon = nextmon) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
35 tp = THINGPTR(mon);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
36 nextmon = next(mon);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
37 if (off(*tp, ISHELD) && on(*tp, ISRUN)) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
38 if (tp->t_nomove > 0)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
39 if (--tp->t_nomove > 0)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
40 continue;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
41 if (on(*tp, ISHASTE))
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
42 if (do_chase(mon) == -1)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
43 continue;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
44 if (off(*tp, ISSLOW) || tp->t_turn)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
45 if (do_chase(mon) == -1)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
46 continue;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
47 tp->t_turn ^= TRUE;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
48 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
49 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
50 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
51
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
52
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
53 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
54 * do_chase:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
55 * Make one thing chase another.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
56 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
57 do_chase(mon)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
58 struct linked_list *mon;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
59 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
60 reg struct thing *th;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
61 reg struct room *rer, *ree, *rxx;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
62 reg int mindist, i, dist;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
63 struct stats *st;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
64 bool stoprun = FALSE, ondoor = FALSE, link = FALSE;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
65 char runaway, dofight, wound, sch, ch;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
66 struct coord this;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
67 struct trap *trp;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
68
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
69 th = THINGPTR(mon);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
70 wound = th->t_flags & ISWOUND;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
71 if (wound)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
72 mindist = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
73 else
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
74 mindist = FARAWAY;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
75 runaway = wound;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
76 dofight = !runaway;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
77 rer = th->t_room;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
78 if (th->t_type == 'V') {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
79 if (rer != NULL && !rf_on(rer, ISDARK)) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
80 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
81 * Vampires can't stand the light
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
82 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
83 if (cansee(th->t_pos.y, th->t_pos.x))
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
84 msg("The vampire vaporizes into thin air !");
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
85 killed(mon, FALSE);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
86 return(-1);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
87 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
88 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
89 ree = roomin(th->t_dest); /* room of chasee */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
90 this = *th->t_dest;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
91 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
92 * If the object of our desire is in a different
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
93 * room, then run to the door nearest to our goal.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
94 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
95 if (mvinch(th->t_pos.y, th->t_pos.x) == DOOR)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
96 ondoor = TRUE;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
97 rxx = NULL;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
98 if (rer != NULL || ree != NULL) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
99 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
100 * Monster not in room, hero in room. Run to closest door
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
101 * in hero's room if not wounded. Run away if wounded.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
102 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
103 if (rer == NULL && ree != NULL) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
104 if (!wound)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
105 rxx = ree;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset