1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/* $OpenBSD: klmove.c,v 1.3 2002/05/31 04:21:30 pjanzen Exp $ */
/* $NetBSD: klmove.c,v 1.3 1995/04/22 10:59:07 cgd Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)klmove.c 8.1 (Berkeley) 5/31/93";
#else
static char rcsid[] = "$OpenBSD: klmove.c,v 1.3 2002/05/31 04:21:30 pjanzen Exp $";
#endif
#endif /* not lint */
#include <stdio.h>
#include "trek.h"
/*
** Move Klingons Around
**
** This is a largely incomprehensible block of code that moves
** Klingons around in a quadrant. It was written in a very
** "program as you go" fashion, and is a prime candidate for
** rewriting.
**
** The flag `fl' is zero before an attack, one after an attack,
** and two if you are leaving a quadrant. This serves to
** change the probability and distance that it moves.
**
** Basically, what it will try to do is to move a certain number
** of steps either toward you or away from you. It will avoid
** stars whenever possible. Nextx and nexty are the next
** sector to move to on a per-Klingon basis; they are roughly
** equivalent to Ship.sectx and Ship.secty for the starship. Lookx and
** looky are the sector that you are going to look at to see
** if you can move their. Dx and dy are the increment. Fudgex
** and fudgey are the things you change around to change your
** course around stars.
*/
void
klmove(fl)
int fl;
{
int n;
struct kling *k;
double dx, dy;
int nextx, nexty;
int lookx, looky;
int motion;
int fudgex, fudgey;
int qx, qy;
double bigger;
int i;
# ifdef xTRACE
if (Trace)
printf("klmove: fl = %d, Etc.nkling = %d\n", fl, Etc.nkling);
# endif
for (n = 0; n < Etc.nkling; n++)
{
k = &Etc.klingon[n];
i = 100;
if (fl)
i = 100.0 * k->power / Param.klingpwr;
if (ranf(i) >= Param.moveprob[2 * Move.newquad + fl])
continue;
/* compute distance to move */
motion = ranf(75) - 25;
motion *= k->avgdist * Param.movefac[2 * Move.newquad + fl];
/* compute direction */
dx = Ship.sectx - k->x + ranf(3) - 1;
dy = Ship.secty - k->y + ranf(3) - 1;
bigger = dx;
if (dy > bigger)
bigger = dy;
if (bigger == 0.0)
bigger = 1.0;
dx = dx / bigger + 0.5;
dy = dy / bigger + 0.5;
if (motion < 0)
{
motion = -motion;
dx = -dx;
dy = -dy;
}
fudgex = fudgey = 1;
/* try to move the klingon */
nextx = k->x;
nexty = k->y;
for (; motion > 0; motion--)
{
lookx = nextx + dx;
looky = nexty + dy;
if (lookx < 0 || lookx >= NSECTS || looky < 0 || looky >= NSECTS)
{
/* new quadrant */
qx = Ship.quadx;
qy = Ship.quady;
if (lookx < 0)
qx -= 1;
else
if (lookx >= NSECTS)
qx += 1;
if (looky < 0)
qy -= 1;
else
if (looky >= NSECTS)
qy += 1;
if (qx < 0 || qx >= NQUADS || qy < 0 || qy >= NQUADS ||
Quad[qx][qy].stars < 0 || Quad[qx][qy].klings > MAXKLQUAD - 1)
break;
if (!damaged(SRSCAN))
{
printf("Klingon at %d,%d escapes to quadrant %d,%d\n",
k->x, k->y, qx, qy);
motion = Quad[qx][qy].scanned;
if (motion >= 0 && motion < 1000)
Quad[qx][qy].scanned += 100;
motion = Quad[Ship.quadx][Ship.quady].scanned;
if (motion >= 0 && motion < 1000)
Quad[Ship.quadx][Ship.quady].scanned -= 100;
}
Sect[k->x][k->y] = EMPTY;
Quad[qx][qy].klings += 1;
Etc.nkling -= 1;
*k = Etc.klingon[Etc.nkling];
Quad[Ship.quadx][Ship.quady].klings -= 1;
k = 0;
break;
}
if (Sect[lookx][looky] != EMPTY)
{
lookx = nextx + fudgex;
if (lookx < 0 || lookx >= NSECTS)
lookx = nextx + dx;
if (Sect[lookx][looky] != EMPTY)
{
fudgex = -fudgex;
looky = nexty + fudgey;
if (looky < 0 || looky >= NSECTS || Sect[lookx][looky] != EMPTY)
{
fudgey = -fudgey;
break;
}
}
}
nextx = lookx;
nexty = looky;
}
if (k && (k->x != nextx || k->y != nexty))
{
if (!damaged(SRSCAN))
printf("Klingon at %d,%d moves to %d,%d\n",
k->x, k->y, nextx, nexty);
Sect[k->x][k->y] = EMPTY;
Sect[k->x = nextx][k->y = nexty] = KLINGON;
}
}
compkldist(0);
}
|
