trek/nova.c

   1 /*      $NetBSD: nova.c,v 1.6 2003/08/07 09:37:53 agc 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)nova.c      8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: nova.c,v 1.6 2003/08/07 09:37:53 agc Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <stdio.h>
  42 #include "trek.h"
  43
  44 /*
  45 **  CAUSE A NOVA TO OCCUR
  46 **
  47 **      A nova occurs.  It is the result of having a star hit with
  48 **      a photon torpedo.  There are several things which may happen.
  49 **      The star may not be affected.  It may go nova.  It may turn
  50 **      into a black hole.  Any (yummy) it may go supernova.
  51 **
  52 **      Stars that go nova cause stars which surround them to undergo
  53 **      the same probabilistic process.  Klingons next to them are
  54 **      destroyed.  And if the starship is next to it, it gets zapped.
  55 **      If the zap is too much, it gets destroyed.
  56 */
  57
  58 void
  59 nova(x, y)
  60 int     x, y;
  61 {
  62         int     i, j;
  63         int     se;
  64
  65         if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
  66                 return;
  67         if (ranf(100) < 15)
  68         {
  69                 printf("Spock: Star at %d,%d failed to nova.\n", x, y);
  70                 return;
  71         }
  72         if (ranf(100) < 5) {
  73                 snova(x, y);
  74                 return;
  75         }
  76         printf("Spock: Star at %d,%d gone nova\n", x, y);
  77
  78         if (ranf(4) != 0)
  79                 Sect[x][y] = EMPTY;
  80         else
  81         {
  82                 Sect[x][y] = HOLE;
  83                 Quad[Ship.quadx][Ship.quady].holes += 1;
  84         }
  85         Quad[Ship.quadx][Ship.quady].stars -= 1;
  86         Game.kills += 1;
  87         for (i = x - 1; i <= x + 1; i++)
  88         {
  89                 if (i < 0 || i >= NSECTS)
  90                         continue;
  91                 for (j = y - 1; j <= y + 1; j++)
  92                 {
  93                         if (j < 0 || j >= NSECTS)
  94                                 continue;
  95                         se = Sect[i][j];
  96                         switch (se)
  97                         {
  98
  99                           case EMPTY:
 100                           case HOLE:
 101                                 break;
 102
 103                           case KLINGON:
 104                                 killk(i, j);
 105                                 break;
 106
 107                           case STAR:
 108                                 nova(i, j);
 109                                 break;
 110
 111                           case INHABIT:
 112                                 kills(i, j, -1);
 113                                 break;
 114
 115                           case BASE:
 116                                 killb(i, j);
 117                                 Game.killb += 1;
 118                                 break;
 119
 120                           case ENTERPRISE:
 121                           case QUEENE:
 122                                 se = 2000;
 123                                 if (Ship.shldup) {
 124                                         if (Ship.shield >= se) {
 125                                                 Ship.shield -= se;
 126                                                 se = 0;
 127                                         } else {
 128                                                 se -= Ship.shield;
 129                                                 Ship.shield = 0;
 130                                         }
 131                                 }
 132                                 Ship.energy -= se;
 133                                 if (Ship.energy <= 0)
 134                                         lose(L_SUICID);
 135                                 break;
 136
 137                           default:
 138                                 printf("Unknown object %c at %d,%d destroyed\n",
 139                                         se, i, j);
 140                                 Sect[i][j] = EMPTY;
 141                                 break;
 142                         }
 143                 }
 144         }
 145         return;
 146 }