trek/snova.c

   1 /*      $NetBSD: snova.c,v 1.4 1997/10/12 21:25:18 christos 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[] = "@(#)snova.c     8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: snova.c,v 1.4 1997/10/12 21:25:18 christos Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <stdio.h>
  46 #include <unistd.h>
  47 #include "trek.h"
  48
  49 /*
  50 **  CAUSE SUPERNOVA TO OCCUR
  51 **
  52 **      A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
  53 **      otherwise, the current quadrant is taken, and (ix, iy) give
  54 **      the sector quadrants of the star which is blowing up.
  55 **
  56 **      If the supernova turns out to be in the quadrant you are in,
  57 **      you go into "emergency override mode", which tries to get you
  58 **      out of the quadrant as fast as possible.  However, if you
  59 **      don't have enough fuel, or if you by chance run into something,
  60 **      or some such thing, you blow up anyway.  Oh yeh, if you are
  61 **      within two sectors of the star, there is nothing that can
  62 **      be done for you.
  63 **
  64 **      When a star has gone supernova, the quadrant becomes uninhab-
  65 **      itable for the rest of eternity, i.e., the game.  If you ever
  66 **      try stopping in such a quadrant, you will go into emergency
  67 **      override mode.
  68 */
  69
  70 void
  71 snova(x, y)
  72 int     x, y;
  73 {
  74         int             qx, qy;
  75         int             ix, iy = 0;
  76         int             f;
  77         int             dx, dy;
  78         int             n;
  79         struct quad     *q;
  80
  81         f = 0;
  82         ix = x;
  83         if (ix < 0)
  84         {
  85                 /* choose a quadrant */
  86                 while (1)
  87                 {
  88                         qx = ranf(NQUADS);
  89                         qy = ranf(NQUADS);
  90                         q = &Quad[qx][qy];
  91                         if (q->stars > 0)
  92                                 break;
  93                 }
  94                 if (Ship.quadx == qx && Ship.quady == qy)
  95                 {
  96                         /* select a particular star */
  97                         n = ranf(q->stars);
  98                         for (ix = 0; ix < NSECTS; ix++)
  99                         {
 100                                 for (iy = 0; iy < NSECTS; iy++)
 101                                         if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
 102                                                 if ((n -= 1) <= 0)
 103                                                         break;
 104                                 if (n <= 0)
 105                                         break;
 106                         }
 107                         f = 1;
 108                 }
 109         }
 110         else
 111         {
 112                 /* current quadrant */
 113                 iy = y;
 114                 qx = Ship.quadx;
 115                 qy = Ship.quady;
 116                 q = &Quad[qx][qy];
 117                 f = 1;
 118         }
 119         if (f)
 120         {
 121                 /* supernova is in same quadrant as Enterprise */
 122                 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
 123                 dx = ix - Ship.sectx;
 124                 dy = iy - Ship.secty;
 125                 if (dx * dx + dy * dy <= 2)
 126                 {
 127                         printf("***  Emergency override attem");
 128                         sleep(1);
 129                         printf("\n");
 130                         lose(L_SNOVA);
 131                 }
 132                 q->scanned = 1000;
 133         }
 134         else
 135         {
 136                 if (!damaged(SSRADIO))
 137                 {
 138                         q->scanned = 1000;
 139                         printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
 140                         printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
 141                 }
 142         }
 143
 144         /* clear out the supernova'ed quadrant */
 145         dx = q->klings;
 146         dy = q->stars;
 147         Now.klings -= dx;
 148         if (x >= 0)
 149         {
 150                 /* Enterprise caused supernova */
 151                 Game.kills += dy;
 152                 if (q->bases)
 153                         killb(qx, qy);
 154                 Game.killk += dx;
 155         }
 156         else
 157                 if (q->bases)
 158                         killb(qx, qy);
 159         killd(qx, qy, (x >= 0));
 160         q->stars = -1;
 161         q->klings = 0;
 162         if (Now.klings <= 0)
 163         {
 164                 printf("Lucky devil, that supernova destroyed the last klingon\n");
 165                 win();
 166         }
 167         return;
 168 }