1 /* $NetBSD: capture.c,v 1.12 2009/08/12 08:54:54 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)capture.c 8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: capture.c,v 1.12 2009/08/12 08:54:54 dholland Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <stdio.h>
42 #include "trek.h"
43
44 static struct kling *selectklingon(void);
45
46 /*
47 ** Ask a Klingon To Surrender
48 **
49 ** (Fat chance)
50 **
51 ** The Subspace Radio is needed to ask a Klingon if he will kindly
52 ** surrender. A random Klingon from the ones in the quadrant is
53 ** chosen.
54 **
55 ** The Klingon is requested to surrender. The probability of this
56 ** is a function of that Klingon's remaining power, our power,
57 ** etc.
58 */
59
60 /*ARGSUSED*/
61 void
capture(int v __unused)62 capture(int v __unused)
63 {
64 int i;
65 struct kling *k;
66 double x;
67
68 /* check for not cloaked */
69 if (Ship.cloaked) {
70 printf("Ship-ship communications out when cloaked\n");
71 return;
72 }
73 if (damaged(SSRADIO)) {
74 out(SSRADIO);
75 return;
76 }
77 /* find out if there are any at all */
78 if (Etc.nkling <= 0) {
79 printf("Uhura: Getting no response, sir\n");
80 return;
81 }
82
83 /* if there is more than one Klingon, find out which one */
84 k = selectklingon();
85 Move.free = 0;
86 Move.time = 0.05;
87
88 /* check out that Klingon */
89 k->srndreq++;
90 x = Param.klingpwr;
91 x *= Ship.energy;
92 x /= k->power * Etc.nkling;
93 x *= Param.srndrprob;
94 i = x;
95 #ifdef xTRACE
96 if (Trace)
97 printf("Prob = %d (%.4f)\n", i, x);
98 #endif
99 if (i > ranf(100)) {
100 /* guess what, he surrendered!!! */
101 printf("Klingon at %d,%d surrenders\n", k->x, k->y);
102 i = ranf(Param.klingcrew);
103 if ( i > 0 )
104 printf("%d klingons commit suicide rather than be "
105 "taken captive\n", Param.klingcrew - i);
106 if (i > Ship.brigfree)
107 i = Ship.brigfree;
108 Ship.brigfree -= i;
109 printf("%d captives taken\n", i);
110 killk(k->x, k->y);
111 return;
112 }
113
114 /* big surprise, he refuses to surrender */
115 printf("Fat chance, captain\n");
116 return;
117 }
118
119
120 /*
121 ** SELECT A KLINGON
122 **
123 ** Cruddy, just takes one at random. Should ask the captain.
124 */
125
126 static struct kling *
selectklingon(void)127 selectklingon(void)
128 {
129 int i;
130
131 if (Etc.nkling < 2)
132 i = 0;
133 else
134 i = ranf(Etc.nkling);
135 return (&Etc.klingon[i]);
136 }
137