1 /* @(#)shield.c 8.1 (Berkeley) 5/31/93 */ 2 /* $NetBSD: shield.c,v 1.13 2009/08/12 08:54:54 dholland Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <stdio.h> 34 #include "trek.h" 35 #include "getpar.h" 36 37 /* 38 ** SHIELD AND CLOAKING DEVICE CONTROL 39 ** 40 ** 'f' is one for auto shield up (in case of Condition RED), 41 ** zero for shield control, and negative one for cloaking 42 ** device control. 43 ** 44 ** Called with an 'up' or 'down' on the same line, it puts 45 ** the shields/cloak into the specified mode. Otherwise it 46 ** reports to the user the current mode, and asks if she wishes 47 ** to change. 48 ** 49 ** This is not a free move. Hits that occur as a result of 50 ** this move appear as though the shields are half up/down, 51 ** so you get partial hits. 52 */ 53 54 static const struct cvntab Udtab[] = { 55 { "u", "p", (cmdfun)1, 0 }, 56 { "d", "own", (cmdfun)0, 0 }, 57 { NULL, NULL, NULL, 0 } 58 }; 59 60 void 61 shield(int f) 62 { 63 int i; 64 const struct cvntab *r; 65 char s[100]; 66 const char *device, *dev2, *dev3; 67 int ind; 68 char *stat; 69 70 if (f > 0 && (Ship.shldup || damaged(SRSCAN))) 71 return; 72 if (f < 0) { 73 /* cloaking device */ 74 if (Ship.ship == QUEENE) { 75 printf("Ye Faire Queene does not have the " 76 "cloaking device.\n"); 77 return; 78 } 79 device = "Cloaking device"; 80 dev2 = "is"; 81 ind = CLOAK; 82 dev3 = "it"; 83 stat = &Ship.cloaked; 84 } else { 85 /* shields */ 86 device = "Shields"; 87 dev2 = "are"; 88 dev3 = "them"; 89 ind = SHIELD; 90 stat = &Ship.shldup; 91 } 92 if (damaged(ind)) { 93 if (f <= 0) 94 out(ind); 95 return; 96 } 97 if (Ship.cond == DOCKED) { 98 printf("%s %s down while docked\n", device, dev2); 99 return; 100 } 101 if (f <= 0 && !testnl()) { 102 r = getcodpar("Up or down", Udtab); 103 i = (long) r->value; 104 } else { 105 if (*stat) 106 (void)snprintf(s, sizeof(s), 107 "%s %s up. Do you want %s down", 108 device, dev2, dev3); 109 else 110 (void)snprintf(s, sizeof(s), 111 "%s %s down. Do you want %s up", 112 device, dev2, dev3); 113 if (!getynpar(s)) 114 return; 115 i = !*stat; 116 } 117 if (*stat == i) { 118 printf("%s already ", device); 119 if (i) 120 printf("up\n"); 121 else 122 printf("down\n"); 123 return; 124 } 125 if (i) { 126 if (f >= 0) 127 Ship.energy -= Param.shupengy; 128 else 129 Ship.cloakgood = 0; 130 } 131 Move.free = 0; 132 if (f >= 0) 133 Move.shldchg = 1; 134 *stat = i; 135 return; 136 } 137