trek/shield.c

   1 /*      $NetBSD: shield.c,v 1.4 1995/04/24 12:26:09 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 1.4 1995/04/24 12:26:09 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 = (long) 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 }