games/trek/nova.c

   1 /*      $NetBSD: nova.c,v 1.7 2009/05/24 19:18:44 dholland 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 1.7 2009/05/24 19:18:44 dholland 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(int x, int y)
  60 {
  61         int     i, j;
  62         int     se;
  63
  64         if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
  65                 return;
  66         if (ranf(100) < 15) {
  67                 printf("Spock: Star at %d,%d failed to nova.\n", x, y);
  68                 return;
  69         }
  70         if (ranf(100) < 5) {
  71                 snova(x, y);
  72                 return;
  73         }
  74         printf("Spock: Star at %d,%d gone nova\n", x, y);
  75
  76         if (ranf(4) != 0) {
  77                 Sect[x][y] = EMPTY;
  78         } else {
  79                 Sect[x][y] = HOLE;
  80                 Quad[Ship.quadx][Ship.quady].holes += 1;
  81         }
  82         Quad[Ship.quadx][Ship.quady].stars -= 1;
  83         Game.kills += 1;
  84         for (i = x - 1; i <= x + 1; i++) {
  85                 if (i < 0 || i >= NSECTS)
  86                         continue;
  87                 for (j = y - 1; j <= y + 1; j++) {
  88                         if (j < 0 || j >= NSECTS)
  89                                 continue;
  90                         se = Sect[i][j];
  91                         switch (se) {
  92
  93                           case EMPTY:
  94                           case HOLE:
  95                                 break;
  96
  97                           case KLINGON:
  98                                 killk(i, j);
  99                                 break;
 100
 101                           case STAR:
 102                                 nova(i, j);
 103                                 break;
 104
 105                           case INHABIT:
 106                                 kills(i, j, -1);
 107                                 break;
 108
 109                           case BASE:
 110                                 killb(i, j);
 111                                 Game.killb += 1;
 112                                 break;
 113
 114                           case ENTERPRISE:
 115                           case QUEENE:
 116                                 se = 2000;
 117                                 if (Ship.shldup) {
 118                                         if (Ship.shield >= se) {
 119                                                 Ship.shield -= se;
 120                                                 se = 0;
 121                                         } else {
 122                                                 se -= Ship.shield;
 123                                                 Ship.shield = 0;
 124                                         }
 125                                 }
 126                                 Ship.energy -= se;
 127                                 if (Ship.energy <= 0)
 128                                         lose(L_SUICID);
 129                                 break;
 130
 131                           default:
 132                                 printf("Unknown object %c at %d,%d destroyed\n",
 133                                         se, i, j);
 134                                 Sect[i][j] = EMPTY;
 135                                 break;
 136                         }
 137                 }
 138         }
 139         return;
 140 }