trek/snova.c

   1 /*      $NetBSD: snova.c,v 1.3 1995/04/22 10:59:29 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[] = "@(#)snova.c     8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: snova.c,v 1.3 1995/04/22 10:59:29 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 # include       "trek.h"
  45
  46 /*
  47 **  CAUSE SUPERNOVA TO OCCUR
  48 **
  49 **      A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
  50 **      otherwise, the current quadrant is taken, and (ix, iy) give
  51 **      the sector quadrants of the star which is blowing up.
  52 **
  53 **      If the supernova turns out to be in the quadrant you are in,
  54 **      you go into "emergency override mode", which tries to get you
  55 **      out of the quadrant as fast as possible.  However, if you
  56 **      don't have enough fuel, or if you by chance run into something,
  57 **      or some such thing, you blow up anyway.  Oh yeh, if you are
  58 **      within two sectors of the star, there is nothing that can
  59 **      be done for you.
  60 **
  61 **      When a star has gone supernova, the quadrant becomes uninhab-
  62 **      itable for the rest of eternity, i.e., the game.  If you ever
  63 **      try stopping in such a quadrant, you will go into emergency
  64 **      override mode.
  65 */
  66
  67 snova(x, y)
  68 int     x, y;
  69 {
  70         int                     qx, qy;
  71         register int            ix, iy;
  72         int                     f;
  73         int                     dx, dy;
  74         int                     n;
  75         register struct quad    *q;
  76
  77         f = 0;
  78         ix = x;
  79         if (ix < 0)
  80         {
  81                 /* choose a quadrant */
  82                 while (1)
  83                 {
  84                         qx = ranf(NQUADS);
  85                         qy = ranf(NQUADS);
  86                         q = &Quad[qx][qy];
  87                         if (q->stars > 0)
  88                                 break;
  89                 }
  90                 if (Ship.quadx == qx && Ship.quady == qy)
  91                 {
  92                         /* select a particular star */
  93                         n = ranf(q->stars);
  94                         for (ix = 0; ix < NSECTS; ix++)
  95                         {
  96                                 for (iy = 0; iy < NSECTS; iy++)
  97                                         if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
  98                                                 if ((n -= 1) <= 0)
  99                                                         break;
 100                                 if (n <= 0)
 101                                         break;
 102                         }
 103                         f = 1;
 104                 }
 105         }
 106         else
 107         {
 108                 /* current quadrant */
 109                 iy = y;
 110                 qx = Ship.quadx;
 111                 qy = Ship.quady;
 112                 q = &Quad[qx][qy];
 113                 f = 1;
 114         }
 115         if (f)
 116         {
 117                 /* supernova is in same quadrant as Enterprise */
 118                 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
 119                 dx = ix - Ship.sectx;
 120                 dy = iy - Ship.secty;
 121                 if (dx * dx + dy * dy <= 2)
 122                 {
 123                         printf("***  Emergency override attem");
 124                         sleep(1);
 125                         printf("\n");
 126                         lose(L_SNOVA);
 127                 }
 128                 q->scanned = 1000;
 129         }
 130         else
 131         {
 132                 if (!damaged(SSRADIO))
 133                 {
 134                         q->scanned = 1000;
 135                         printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
 136                         printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
 137                 }
 138         }
 139
 140         /* clear out the supernova'ed quadrant */
 141         dx = q->klings;
 142         dy = q->stars;
 143         Now.klings -= dx;
 144         if (x >= 0)
 145         {
 146                 /* Enterprise caused supernova */
 147                 Game.kills += dy;
 148                 if (q->bases)
 149                         killb(qx, qy, -1);
 150                 Game.killk += dx;
 151         }
 152         else
 153                 if (q->bases)
 154                         killb(qx, qy, 0);
 155         killd(qx, qy, (x >= 0));
 156         q->stars = -1;
 157         q->klings = 0;
 158         if (Now.klings <= 0)
 159         {
 160                 printf("Lucky devil, that supernova destroyed the last klingon\n");
 161                 win();
 162         }
 163         return;
 164 }