1 /* $NetBSD: shield.c,v 1.13 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[] = "@(#)shield.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 __RCSID("$NetBSD: shield.c,v 1.13 2009/08/12 08:54:54 dholland Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdio.h> 42 #include "trek.h" 43 #include "getpar.h" 44 45 /* 46 ** SHIELD AND CLOAKING DEVICE CONTROL 47 ** 48 ** 'f' is one for auto shield up (in case of Condition RED), 49 ** zero for shield control, and negative one for cloaking 50 ** device control. 51 ** 52 ** Called with an 'up' or 'down' on the same line, it puts 53 ** the shields/cloak into the specified mode. Otherwise it 54 ** reports to the user the current mode, and asks if she wishes 55 ** to change. 56 ** 57 ** This is not a free move. Hits that occur as a result of 58 ** this move appear as though the shields are half up/down, 59 ** so you get partial hits. 60 */ 61 62 static const struct cvntab Udtab[] = { 63 { "u", "p", (cmdfun)1, 0 }, 64 { "d", "own", (cmdfun)0, 0 }, 65 { NULL, NULL, NULL, 0 } 66 }; 67 68 void 69 shield(int f) 70 { 71 int i; 72 const struct cvntab *r; 73 char s[100]; 74 const char *device, *dev2, *dev3; 75 int ind; 76 char *stat; 77 78 if (f > 0 && (Ship.shldup || damaged(SRSCAN))) 79 return; 80 if (f < 0) { 81 /* cloaking device */ 82 if (Ship.ship == QUEENE) { 83 printf("Ye Faire Queene does not have the " 84 "cloaking device.\n"); 85 return; 86 } 87 device = "Cloaking device"; 88 dev2 = "is"; 89 ind = CLOAK; 90 dev3 = "it"; 91 stat = &Ship.cloaked; 92 } else { 93 /* shields */ 94 device = "Shields"; 95 dev2 = "are"; 96 dev3 = "them"; 97 ind = SHIELD; 98 stat = &Ship.shldup; 99 } 100 if (damaged(ind)) { 101 if (f <= 0) 102 out(ind); 103 return; 104 } 105 if (Ship.cond == DOCKED) { 106 printf("%s %s down while docked\n", device, dev2); 107 return; 108 } 109 if (f <= 0 && !testnl()) { 110 r = getcodpar("Up or down", Udtab); 111 i = (long) r->value; 112 } else { 113 if (*stat) 114 (void)snprintf(s, sizeof(s), 115 "%s %s up. Do you want %s down", 116 device, dev2, dev3); 117 else 118 (void)snprintf(s, sizeof(s), 119 "%s %s down. Do you want %s up", 120 device, dev2, dev3); 121 if (!getynpar(s)) 122 return; 123 i = !*stat; 124 } 125 if (*stat == i) { 126 printf("%s already ", device); 127 if (i) 128 printf("up\n"); 129 else 130 printf("down\n"); 131 return; 132 } 133 if (i) { 134 if (f >= 0) 135 Ship.energy -= Param.shupengy; 136 else 137 Ship.cloakgood = 0; 138 } 139 Move.free = 0; 140 if (f >= 0) 141 Move.shldchg = 1; 142 *stat = i; 143 return; 144 } 145