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shield.c revision 1.3 
      1 /*	$NetBSD: shield.c,v 1.3 1995/04/22 10:59:28 cgd 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 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)shield.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 static char rcsid[] = "$NetBSD: shield.c,v 1.3 1995/04/22 10:59:28 cgd Exp $";
     41 #endif
     42 #endif /* not lint */
     43 
     44 # include	"trek.h"
     45 # include	"getpar.h"
     46 
     47 /*
     48 **  SHIELD AND CLOAKING DEVICE CONTROL
     49 **
     50 **	'f' is one for auto shield up (in case of Condition RED),
     51 **	zero for shield control, and negative one for cloaking
     52 **	device control.
     53 **
     54 **	Called with an 'up' or 'down' on the same line, it puts
     55 **	the shields/cloak into the specified mode.  Otherwise it
     56 **	reports to the user the current mode, and asks if she wishes
     57 **	to change.
     58 **
     59 **	This is not a free move.  Hits that occur as a result of
     60 **	this move appear as though the shields are half up/down,
     61 **	so you get partial hits.
     62 */
     63 
     64 struct cvntab Udtab[] =
     65 {
     66 	"u",		"p",			(int (*)())1,		0,
     67 	"d",		"own",			0,		0,
     68 	0
     69 };
     70 
     71 shield(f)
     72 int	f;
     73 {
     74 	register int		i;
     75 	char			c;
     76 	struct cvntab		*r;
     77 	char			s[100];
     78 	char			*device, *dev2, *dev3;
     79 	int			ind;
     80 	char			*stat;
     81 
     82 	if (f > 0 && (Ship.shldup || damaged(SRSCAN)))
     83 		return;
     84 	if (f < 0)
     85 	{
     86 		/* cloaking device */
     87 		if (Ship.ship == QUEENE)
     88 			return (printf("Ye Faire Queene does not have the cloaking device.\n"));
     89 		device = "Cloaking device";
     90 		dev2 = "is";
     91 		ind = CLOAK;
     92 		dev3 = "it";
     93 		stat = &Ship.cloaked;
     94 	}
     95 	else
     96 	{
     97 		/* shields */
     98 		device = "Shields";
     99 		dev2 = "are";
    100 		dev3 = "them";
    101 		ind = SHIELD;
    102 		stat = &Ship.shldup;
    103 	}
    104 	if (damaged(ind))
    105 	{
    106 		if (f <= 0)
    107 			out(ind);
    108 		return;
    109 	}
    110 	if (Ship.cond == DOCKED)
    111 	{
    112 		printf("%s %s down while docked\n", device, dev2);
    113 		return;
    114 	}
    115 	if (f <= 0 && !testnl())
    116 	{
    117 		r = getcodpar("Up or down", Udtab);
    118 		i = (int) r->value;
    119 	}
    120 	else
    121 	{
    122 		if (*stat)
    123 			(void)sprintf(s, "%s %s up.  Do you want %s down", device, dev2, dev3);
    124 		else
    125 			(void)sprintf(s, "%s %s down.  Do you want %s up", device, dev2, dev3);
    126 		if (!getynpar(s))
    127 			return;
    128 		i = !*stat;
    129 	}
    130 	if (*stat == i)
    131 	{
    132 		printf("%s already ", device);
    133 		if (i)
    134 			printf("up\n");
    135 		else
    136 			printf("down\n");
    137 		return;
    138 	}
    139 	if (i)
    140 		if (f >= 0)
    141 			Ship.energy -= Param.shupengy;
    142 		else
    143 			Ship.cloakgood = 0;
    144 	Move.free = 0;
    145 	if (f >= 0)
    146 		Move.shldchg = 1;
    147 	*stat = i;
    148 	return;
    149 }
    150