Home | History | Annotate | Line # | Download | only in trek
shield.c revision 1.6 
      1 /*	$NetBSD: shield.c,v 1.6 1998/08/30 09:19:40 veego 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)shield.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: shield.c,v 1.6 1998/08/30 09:19:40 veego Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <stdio.h>
     46 #include "trek.h"
     47 #include "getpar.h"
     48 
     49 /*
     50 **  SHIELD AND CLOAKING DEVICE CONTROL
     51 **
     52 **	'f' is one for auto shield up (in case of Condition RED),
     53 **	zero for shield control, and negative one for cloaking
     54 **	device control.
     55 **
     56 **	Called with an 'up' or 'down' on the same line, it puts
     57 **	the shields/cloak into the specified mode.  Otherwise it
     58 **	reports to the user the current mode, and asks if she wishes
     59 **	to change.
     60 **
     61 **	This is not a free move.  Hits that occur as a result of
     62 **	this move appear as though the shields are half up/down,
     63 **	so you get partial hits.
     64 */
     65 
     66 struct cvntab Udtab[] =
     67 {
     68 	{ "u",		"p",		(cmdfun)1,	0 },
     69 	{ "d",		"own",		(cmdfun)0,	0 },
     70 	{ NULL,		NULL,		NULL,		0 }
     71 };
     72 
     73 void
     74 shield(f)
     75 int	f;
     76 {
     77 	int		i;
     78 	struct cvntab	*r;
     79 	char		s[100];
     80 	char		*device, *dev2, *dev3;
     81 	int		ind;
     82 	char		*stat;
     83 
     84 	if (f > 0 && (Ship.shldup || damaged(SRSCAN)))
     85 		return;
     86 	if (f < 0)
     87 	{
     88 		/* cloaking device */
     89 		if (Ship.ship == QUEENE) {
     90 			printf("Ye Faire Queene does not have the cloaking device.\n");
     91 			return;
     92 		}
     93 		device = "Cloaking device";
     94 		dev2 = "is";
     95 		ind = CLOAK;
     96 		dev3 = "it";
     97 		stat = &Ship.cloaked;
     98 	}
     99 	else
    100 	{
    101 		/* shields */
    102 		device = "Shields";
    103 		dev2 = "are";
    104 		dev3 = "them";
    105 		ind = SHIELD;
    106 		stat = &Ship.shldup;
    107 	}
    108 	if (damaged(ind))
    109 	{
    110 		if (f <= 0)
    111 			out(ind);
    112 		return;
    113 	}
    114 	if (Ship.cond == DOCKED)
    115 	{
    116 		printf("%s %s down while docked\n", device, dev2);
    117 		return;
    118 	}
    119 	if (f <= 0 && !testnl())
    120 	{
    121 		r = getcodpar("Up or down", Udtab);
    122 		i = (long) r->value;
    123 	}
    124 	else
    125 	{
    126 		if (*stat)
    127 			(void)sprintf(s, "%s %s up.  Do you want %s down", device, dev2, dev3);
    128 		else
    129 			(void)sprintf(s, "%s %s down.  Do you want %s up", device, dev2, dev3);
    130 		if (!getynpar(s))
    131 			return;
    132 		i = !*stat;
    133 	}
    134 	if (*stat == i)
    135 	{
    136 		printf("%s already ", device);
    137 		if (i)
    138 			printf("up\n");
    139 		else
    140 			printf("down\n");
    141 		return;
    142 	}
    143 	if (i) {
    144 		if (f >= 0)
    145 			Ship.energy -= Param.shupengy;
    146 		else
    147 			Ship.cloakgood = 0;
    148 	}
    149 	Move.free = 0;
    150 	if (f >= 0)
    151 		Move.shldchg = 1;
    152 	*stat = i;
    153 	return;
    154 }
    155