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 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)shield.c 8.1 (Berkeley) 5/31/93"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD: src/games/trek/shield.c,v 1.5 1999/11/30 03:49:54 billf Exp $"; 40 #endif /* not lint */ 41 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 struct cvntab Udtab[] = 63 { 64 "u", "p", (int (*)())1, 0, 65 "d", "own", 0, 0, 66 0 67 }; 68 69 shield(f) 70 int f; 71 { 72 int i; 73 char c; 74 struct cvntab *r; 75 char s[100]; 76 char *device, *dev2, *dev3; 77 int ind; 78 char *stat; 79 80 if (f > 0 && (Ship.shldup || damaged(SRSCAN))) 81 return; 82 if (f < 0) 83 { 84 /* cloaking device */ 85 if (Ship.ship == QUEENE) 86 return (printf("Ye Faire Queene does not have the cloaking device.\n")); 87 device = "Cloaking device"; 88 dev2 = "is"; 89 ind = CLOAK; 90 dev3 = "it"; 91 stat = &Ship.cloaked; 92 } 93 else 94 { 95 /* shields */ 96 device = "Shields"; 97 dev2 = "are"; 98 dev3 = "them"; 99 ind = SHIELD; 100 stat = &Ship.shldup; 101 } 102 if (damaged(ind)) 103 { 104 if (f <= 0) 105 out(ind); 106 return; 107 } 108 if (Ship.cond == DOCKED) 109 { 110 printf("%s %s down while docked\n", device, dev2); 111 return; 112 } 113 if (f <= 0 && !testnl()) 114 { 115 r = getcodpar("Up or down", Udtab); 116 i = (long) r->value; 117 } 118 else 119 { 120 if (*stat) 121 (void)sprintf(s, "%s %s up. Do you want %s down", device, dev2, dev3); 122 else 123 (void)sprintf(s, "%s %s down. Do you want %s up", device, dev2, dev3); 124 if (!getynpar(s)) 125 return; 126 i = !*stat; 127 } 128 if (*stat == i) 129 { 130 printf("%s already ", device); 131 if (i) 132 printf("up\n"); 133 else 134 printf("down\n"); 135 return; 136 } 137 if (i) 138 if (f >= 0) 139 Ship.energy -= Param.shupengy; 140 else 141 Ship.cloakgood = 0; 142 Move.free = 0; 143 if (f >= 0) 144 Move.shldchg = 1; 145 *stat = i; 146 return; 147 } 148