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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)capture.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/trek/capture.c,v 1.4 1999/11/30 03:49:43 billf Exp $ 35 * $DragonFly: src/games/trek/capture.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $ 36 */ 37 38 # include "trek.h" 39 40 static struct kling *selectklingon(void); 41 42 /* 43 ** Ask a Klingon To Surrender 44 ** 45 ** (Fat chance) 46 ** 47 ** The Subspace Radio is needed to ask a Klingon if he will kindly 48 ** surrender. A random Klingon from the ones in the quadrant is 49 ** chosen. 50 ** 51 ** The Klingon is requested to surrender. The probability of this 52 ** is a function of that Klingon's remaining power, our power, 53 ** etc. 54 */ 55 56 void 57 capture(__unused int unused) 58 { 59 int i; 60 struct kling *k; 61 double x; 62 63 /* check for not cloaked */ 64 if (Ship.cloaked) 65 { 66 printf("Ship-ship communications out when cloaked\n"); 67 return; 68 } 69 if (damaged(SSRADIO)) 70 return (out(SSRADIO)); 71 /* find out if there are any at all */ 72 if (Etc.nkling <= 0) 73 { 74 printf("Uhura: Getting no response, sir\n"); 75 return; 76 } 77 78 /* if there is more than one Klingon, find out which one */ 79 k = selectklingon(); 80 Move.free = 0; 81 Move.time = 0.05; 82 83 /* check out that Klingon */ 84 k->srndreq++; 85 x = Param.klingpwr; 86 x *= Ship.energy; 87 x /= k->power * Etc.nkling; 88 x *= Param.srndrprob; 89 i = x; 90 # ifdef xTRACE 91 if (Trace) 92 printf("Prob = %d (%.4f)\n", i, x); 93 # endif 94 if (i > ranf(100)) 95 { 96 /* guess what, he surrendered!!! */ 97 printf("Klingon at %d,%d surrenders\n", k->x, k->y); 98 i = ranf(Param.klingcrew); 99 if ( i > 0 ) 100 printf("%d klingons commit suicide rather than be taken captive\n", Param.klingcrew - i); 101 if (i > Ship.brigfree) 102 i = Ship.brigfree; 103 Ship.brigfree -= i; 104 printf("%d captives taken\n", i); 105 killk(k->x, k->y); 106 return; 107 } 108 109 /* big surprise, he refuses to surrender */ 110 printf("Fat chance, captain\n"); 111 return; 112 } 113 114 115 /* 116 ** SELECT A KLINGON 117 ** 118 ** Cruddy, just takes one at random. Should ask the captain. 119 */ 120 121 static struct kling * 122 selectklingon(void) 123 { 124 int i; 125 126 if (Etc.nkling < 2) 127 i = 0; 128 else 129 i = ranf(Etc.nkling); 130 return (&Etc.klingon[i]); 131 } 132