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 * @(#)shield.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/trek/shield.c,v 1.5 1999/11/30 03:49:54 billf Exp $ 35 * $DragonFly: src/games/trek/shield.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $ 36 */ 37 38 # include "trek.h" 39 # include "getpar.h" 40 41 /* 42 ** SHIELD AND CLOAKING DEVICE CONTROL 43 ** 44 ** 'f' is one for auto shield up (in case of Condition RED), 45 ** zero for shield control, and negative one for cloaking 46 ** device control. 47 ** 48 ** Called with an 'up' or 'down' on the same line, it puts 49 ** the shields/cloak into the specified mode. Otherwise it 50 ** reports to the user the current mode, and asks if she wishes 51 ** to change. 52 ** 53 ** This is not a free move. Hits that occur as a result of 54 ** this move appear as though the shields are half up/down, 55 ** so you get partial hits. 56 */ 57 58 struct cvntab Udtab[] = 59 { 60 { "u", "p", (void (*)(int))1, 0 }, 61 { "d", "own", (void (*)(int))0, 0 }, 62 { NULL, NULL, NULL, 0 } 63 }; 64 65 void 66 shield(int f) 67 { 68 int i; 69 struct cvntab *r; 70 char s[100]; 71 const char *device, *dev2, *dev3; 72 int ind; 73 char *stat; 74 75 if (f > 0 && (Ship.shldup || damaged(SRSCAN))) 76 return; 77 if (f < 0) 78 { 79 /* cloaking device */ 80 if (Ship.ship == QUEENE) { 81 printf("Ye Faire Queene does not have the cloaking device.\n"); 82 return; 83 } 84 device = "Cloaking device"; 85 dev2 = "is"; 86 ind = CLOAK; 87 dev3 = "it"; 88 stat = &Ship.cloaked; 89 } 90 else 91 { 92 /* shields */ 93 device = "Shields"; 94 dev2 = "are"; 95 dev3 = "them"; 96 ind = SHIELD; 97 stat = &Ship.shldup; 98 } 99 if (damaged(ind)) 100 { 101 if (f <= 0) 102 out(ind); 103 return; 104 } 105 if (Ship.cond == DOCKED) 106 { 107 printf("%s %s down while docked\n", device, dev2); 108 return; 109 } 110 if (f <= 0 && !testnl()) 111 { 112 r = getcodpar("Up or down", Udtab); 113 i = (long) r->value; 114 } 115 else 116 { 117 if (*stat) 118 sprintf(s, "%s %s up. Do you want %s down", device, dev2, dev3); 119 else 120 sprintf(s, "%s %s down. Do you want %s up", device, dev2, dev3); 121 if (!getynpar(s)) 122 return; 123 i = !*stat; 124 } 125 if (*stat == i) 126 { 127 printf("%s already ", device); 128 if (i) 129 printf("up\n"); 130 else 131 printf("down\n"); 132 return; 133 } 134 if (i) 135 { 136 if (f >= 0) 137 Ship.energy -= Param.shupengy; 138 else 139 Ship.cloakgood = 0; 140 } 141 Move.free = 0; 142 if (f >= 0) 143 Move.shldchg = 1; 144 *stat = i; 145 return; 146 } 147