games/trek/nova.c

   1 /*-
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)nova.c   8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/trek/nova.c,v 1.4 1999/11/30 03:49:52 billf Exp $
  31  * $DragonFly: src/games/trek/nova.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
  32  */
  33
  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                           case EMPTY:
  85                           case HOLE:
  86                                 break;
  87
  88                           case KLINGON:
  89                                 killk(i, j);
  90                                 break;
  91
  92                           case STAR:
  93                                 nova(i, j);
  94                                 break;
  95
  96                           case INHABIT:
  97                                 kills(i, j, -1);
  98                                 break;
  99
 100                           case BASE:
 101                                 killb(i, j);
 102                                 Game.killb += 1;
 103                                 break;
 104
 105                           case ENTERPRISE:
 106                           case QUEENE:
 107                                 se = 2000;
 108                                 if (Ship.shldup) {
 109                                         if (Ship.shield >= se) {
 110                                                 Ship.shield -= se;
 111                                                 se = 0;
 112                                         } else {
 113                                                 se -= Ship.shield;
 114                                                 Ship.shield = 0;
 115                                         }
 116                                 }
 117                                 Ship.energy -= se;
 118                                 if (Ship.energy <= 0)
 119                                         lose(L_SUICID);
 120                                 break;
 121
 122                           default:
 123                                 printf("Unknown object %c at %d,%d destroyed\n",
 124                                         se, i, j);
 125                                 Sect[i][j] = EMPTY;
 126                                 break;
 127                         }
 128                 }
 129         }
 130         return;
 131 }