games/trek/nova.c

   1 /*      @(#)nova.c      8.1 (Berkeley) 5/31/93                          */
   2 /*      $NetBSD: nova.c,v 1.8 2009/05/24 21:44:56 dholland Exp $        */
   3
   4 /*
   5  * Copyright (c) 1980, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <stdio.h>
  34 #include "trek.h"
  35
  36 /*
  37 **  CAUSE A NOVA TO OCCUR
  38 **
  39 **      A nova occurs.  It is the result of having a star hit with
  40 **      a photon torpedo.  There are several things which may happen.
  41 **      The star may not be affected.  It may go nova.  It may turn
  42 **      into a black hole.  Any (yummy) it may go supernova.
  43 **
  44 **      Stars that go nova cause stars which surround them to undergo
  45 **      the same probabilistic process.  Klingons next to them are
  46 **      destroyed.  And if the starship is next to it, it gets zapped.
  47 **      If the zap is too much, it gets destroyed.
  48 */
  49
  50 void
  51 nova(int x, int y)
  52 {
  53         int     i, j;
  54         int     se;
  55
  56         if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
  57                 return;
  58         if (ranf(100) < 15) {
  59                 printf("Spock: Star at %d,%d failed to nova.\n", x, y);
  60                 return;
  61         }
  62         if (ranf(100) < 5) {
  63                 snova(x, y);
  64                 return;
  65         }
  66         printf("Spock: Star at %d,%d gone nova\n", x, y);
  67
  68         if (ranf(4) != 0) {
  69                 Sect[x][y] = EMPTY;
  70         } else {
  71                 Sect[x][y] = HOLE;
  72                 Quad[Ship.quadx][Ship.quady].holes += 1;
  73         }
  74         Quad[Ship.quadx][Ship.quady].stars -= 1;
  75         Game.kills += 1;
  76         for (i = x - 1; i <= x + 1; i++) {
  77                 if (i < 0 || i >= NSECTS)
  78                         continue;
  79                 for (j = y - 1; j <= y + 1; j++) {
  80                         if (j < 0 || j >= NSECTS)
  81                                 continue;
  82                         se = Sect[i][j];
  83                         switch (se) {
  84
  85                           case EMPTY:
  86                           case HOLE:
  87                                 break;
  88
  89                           case KLINGON:
  90                                 killk(i, j);
  91                                 break;
  92
  93                           case STAR:
  94                                 nova(i, j);
  95                                 break;
  96
  97                           case INHABIT:
  98                                 kills(i, j, -1);
  99                                 break;
 100
 101                           case BASE:
 102                                 killb(i, j);
 103                                 Game.killb += 1;
 104                                 break;
 105
 106                           case ENTERPRISE:
 107                           case QUEENE:
 108                                 se = 2000;
 109                                 if (Ship.shldup) {
 110                                         if (Ship.shield >= se) {
 111                                                 Ship.shield -= se;
 112                                                 se = 0;
 113                                         } else {
 114                                                 se -= Ship.shield;
 115                                                 Ship.shield = 0;
 116                                         }
 117                                 }
 118                                 Ship.energy -= se;
 119                                 if (Ship.energy <= 0)
 120                                         lose(L_SUICID);
 121                                 break;
 122
 123                           default:
 124                                 printf("Unknown object %c at %d,%d destroyed\n",
 125                                         se, i, j);
 126                                 Sect[i][j] = EMPTY;
 127                                 break;
 128                         }
 129                 }
 130         }
 131         return;
 132 }