trek/snova.c

   1 /*
   2  * Copyright (c) 1980 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)snova.c     5.4 (Berkeley) 6/1/90";*/
  36 static char rcsid[] = "$Id: snova.c,v 1.2 1993/08/01 18:49:57 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 # include       "trek.h"
  40
  41 /*
  42 **  CAUSE SUPERNOVA TO OCCUR
  43 **
  44 **      A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
  45 **      otherwise, the current quadrant is taken, and (ix, iy) give
  46 **      the sector quadrants of the star which is blowing up.
  47 **
  48 **      If the supernova turns out to be in the quadrant you are in,
  49 **      you go into "emergency override mode", which tries to get you
  50 **      out of the quadrant as fast as possible.  However, if you
  51 **      don't have enough fuel, or if you by chance run into something,
  52 **      or some such thing, you blow up anyway.  Oh yeh, if you are
  53 **      within two sectors of the star, there is nothing that can
  54 **      be done for you.
  55 **
  56 **      When a star has gone supernova, the quadrant becomes uninhab-
  57 **      itable for the rest of eternity, i.e., the game.  If you ever
  58 **      try stopping in such a quadrant, you will go into emergency
  59 **      override mode.
  60 */
  61
  62 snova(x, y)
  63 int     x, y;
  64 {
  65         int                     qx, qy;
  66         register int            ix, iy;
  67         int                     f;
  68         int                     dx, dy;
  69         int                     n;
  70         register struct quad    *q;
  71
  72         f = 0;
  73         ix = x;
  74         if (ix < 0)
  75         {
  76                 /* choose a quadrant */
  77                 while (1)
  78                 {
  79                         qx = ranf(NQUADS);
  80                         qy = ranf(NQUADS);
  81                         q = &Quad[qx][qy];
  82                         if (q->stars > 0)
  83                                 break;
  84                 }
  85                 if (Ship.quadx == qx && Ship.quady == qy)
  86                 {
  87                         /* select a particular star */
  88                         n = ranf(q->stars);
  89                         for (ix = 0; ix < NSECTS; ix++)
  90                         {
  91                                 for (iy = 0; iy < NSECTS; iy++)
  92                                         if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
  93                                                 if ((n -= 1) <= 0)
  94                                                         break;
  95                                 if (n <= 0)
  96                                         break;
  97                         }
  98                         f = 1;
  99                 }
 100         }
 101         else
 102         {
 103                 /* current quadrant */
 104                 iy = y;
 105                 qx = Ship.quadx;
 106                 qy = Ship.quady;
 107                 q = &Quad[qx][qy];
 108                 f = 1;
 109         }
 110         if (f)
 111         {
 112                 /* supernova is in same quadrant as Enterprise */
 113                 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
 114                 dx = ix - Ship.sectx;
 115                 dy = iy - Ship.secty;
 116                 if (dx * dx + dy * dy <= 2)
 117                 {
 118                         printf("***  Emergency override attem");
 119                         sleep(1);
 120                         printf("\n");
 121                         lose(L_SNOVA);
 122                 }
 123                 q->scanned = 1000;
 124         }
 125         else
 126         {
 127                 if (!damaged(SSRADIO))
 128                 {
 129                         q->scanned = 1000;
 130                         printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
 131                         printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
 132                 }
 133         }
 134
 135         /* clear out the supernova'ed quadrant */
 136         dx = q->klings;
 137         dy = q->stars;
 138         Now.klings -= dx;
 139         if (x >= 0)
 140         {
 141                 /* Enterprise caused supernova */
 142                 Game.kills += dy;
 143                 if (q->bases)
 144                         killb(qx, qy, -1);
 145                 Game.killk += dx;
 146         }
 147         else
 148                 if (q->bases)
 149                         killb(qx, qy, 0);
 150         killd(qx, qy, (x >= 0));
 151         q->stars = -1;
 152         q->klings = 0;
 153         if (Now.klings <= 0)
 154         {
 155                 printf("Lucky devil, that supernova destroyed the last klingon\n");
 156                 win();
 157         }
 158         return;
 159 }