Mercurial > hg > early-roguelike

annotate rogue4/chase.c @ 58:c6d58901ddc0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rogue3: move default locations to /var.
author elwin
date Tue, 24 Jan 2012 18:25:21 +0000
parents 9535a08ddc39
children 1b73a8641b37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
1 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
2 * Code for one creature to chase another
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
3 *
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
4 * @(#)chase.c 4.25 (Berkeley) 5/5/82
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
5 *
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
6 * Rogue: Exploring the Dungeons of Doom
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
7 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
8 * All rights reserved.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
9 *
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
10 * See the file LICENSE.TXT for full copyright and licensing information.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
11 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
12
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
13 #include <curses.h>
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
14 #include "rogue.h"
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
15
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
16 #define DRAGONSHOT 5 /* one chance in DRAGONSHOT that a dragon will flame */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
17
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
18 coord ch_ret; /* Where chasing takes you */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
19
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
20 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
21 * runners:
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
22 * Make all the running monsters move.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
23 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
24 runners()
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
25 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
26 register THING *tp;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
27 register THING *ntp;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
28
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
29 for (tp = mlist; tp != NULL; tp = ntp)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
30 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
31 ntp = next(tp);
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
32 if (!on(*tp, ISHELD) && on(*tp, ISRUN))
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
33 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
34 if (!on(*tp, ISSLOW) || tp->t_turn)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
35 if (do_chase(tp) == -1)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
36 continue;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
37 if (on(*tp, ISHASTE))
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
38 if (do_chase(tp) == -1)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
39 continue;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
40 tp->t_turn ^= TRUE;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
41 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
42 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
43 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
44
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
45 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
46 * do_chase:
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
47 * Make one thing chase another.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
48 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
49 do_chase(th)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
50 register THING *th;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
51 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
52 register struct room *rer, *ree; /* room of chaser, room of chasee */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
53 register int mindist = 32767, i, dist;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
54 register bool stoprun = FALSE; /* TRUE means we are there */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
55 register char sch;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
56 register bool door;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
57 register THING *obj;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
58 register struct room *oroom;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
59 coord this; /* Temporary destination for chaser */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
60
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
61 rer = th->t_room; /* Find room of chaser */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
62 if (on(*th, ISGREED) && rer->r_goldval == 0)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
63 th->t_dest = &hero; /* If gold has been taken, run after hero */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
64 if (th->t_dest == &hero) /* Find room of chasee */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
65 ree = proom;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
66 else
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
67 ree = roomin(th->t_dest);
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
68 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
69 * We don't count doors as inside rooms for this routine
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
70 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
71 door = (chat(th->t_pos.y, th->t_pos.x) == DOOR);
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
72 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
73 * If the object of our desire is in a different room,
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
74 * and we are not in a corridor, run to the door nearest to
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
75 * our goal.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
76 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
77 over:
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
78 if (rer != ree)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
79 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
80 for (i = 0; i < rer->r_nexits; i++) /* loop through doors */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
81 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
82 dist = DISTANCE(th->t_dest->y, th->t_dest->x,
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
83 rer->r_exit[i].y, rer->r_exit[i].x);
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
84 if (dist < mindist)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
85 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
86 this = rer->r_exit[i];
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
87 mindist = dist;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
88 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
89 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
90 if (door)
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
91 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
92 rer = &passages[flat(th->t_pos.y, th->t_pos.x) & F_PNUM];
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
93 door = FALSE;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
94 goto over;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
95 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
96 }
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
97 else
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
98 {
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
99 this = *th->t_dest;
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
100 /*
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
101 * For dragons check and see if (a) the hero is on a straight
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
102 * line from it, and (b) that it is within shooting distance,
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
103 * but outside of striking range.
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
104 */
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
105 if (th->t_type == 'D' && (th->t_pos.y == hero.y || th->t_pos.x == hero.x
9535a08ddc39 Import Rogue 5.2 from the Roguelike Restoration Project (r1490)
edwarj4
parents:
diff changeset
106 || abs(th->t_pos.y - hero.y) == abs(th->t_pos.x - hero.x))