1 /*- 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)capture.c 8.1 (Berkeley) 5/31/93 30 * $FreeBSD: src/games/trek/capture.c,v 1.4 1999/11/30 03:49:43 billf Exp $ 31 * $DragonFly: src/games/trek/capture.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $ 32 */ 33 34 #include "trek.h" 35 36 static struct kling *selectklingon(void); 37 38 /* 39 ** Ask a Klingon To Surrender 40 ** 41 ** (Fat chance) 42 ** 43 ** The Subspace Radio is needed to ask a Klingon if he will kindly 44 ** surrender. A random Klingon from the ones in the quadrant is 45 ** chosen. 46 ** 47 ** The Klingon is requested to surrender. The probability of this 48 ** is a function of that Klingon's remaining power, our power, 49 ** etc. 50 */ 51 52 void 53 capture(int v __unused) 54 { 55 int i; 56 struct kling *k; 57 double x; 58 59 /* check for not cloaked */ 60 if (Ship.cloaked) { 61 printf("Ship-ship communications out when cloaked\n"); 62 return; 63 } 64 if (damaged(SSRADIO)) { 65 out(SSRADIO); 66 return; 67 } 68 /* find out if there are any at all */ 69 if (Etc.nkling <= 0) { 70 printf("Uhura: Getting no response, sir\n"); 71 return; 72 } 73 74 /* if there is more than one Klingon, find out which one */ 75 k = selectklingon(); 76 Move.free = 0; 77 Move.time = 0.05; 78 79 /* check out that Klingon */ 80 k->srndreq++; 81 x = Param.klingpwr; 82 x *= Ship.energy; 83 x /= k->power * Etc.nkling; 84 x *= Param.srndrprob; 85 i = x; 86 #ifdef xTRACE 87 if (Trace) 88 printf("Prob = %d (%.4f)\n", i, x); 89 #endif 90 if (i > ranf(100)) { 91 /* guess what, he surrendered!!! */ 92 printf("Klingon at %d,%d surrenders\n", k->x, k->y); 93 i = ranf(Param.klingcrew); 94 if ( i > 0 ) 95 printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i); 96 if (i > Ship.brigfree) 97 i = Ship.brigfree; 98 Ship.brigfree -= i; 99 printf("%d captives taken\n", i); 100 killk(k->x, k->y); 101 return; 102 } 103 104 /* big surprise, he refuses to surrender */ 105 printf("Fat chance, captain\n"); 106 return; 107 } 108 109 110 /* 111 ** SELECT A KLINGON 112 ** 113 ** Cruddy, just takes one at random. Should ask the captain. 114 */ 115 116 static struct kling * 117 selectklingon(void) 118 { 119 int i; 120 121 if (Etc.nkling < 2) 122 i = 0; 123 else 124 i = ranf(Etc.nkling); 125 return (&Etc.klingon[i]); 126 } 127