games/trek/initquad.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  * @(#)initquad.c       8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/trek/initquad.c,v 1.4 1999/11/30 03:49:49 billf Exp $
  31  * $DragonFly: src/games/trek/initquad.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
  32  */
  33
  34 #include "trek.h"
  35
  36 /*
  37 **  Paramize Quadrant Upon Entering
  38 **
  39 **      A quadrant is initialized from the information held in the
  40 **      Quad matrix.  Basically, everything is just initialized
  41 **      randomly, except for the starship, which goes into a fixed
  42 **      sector.
  43 **
  44 **      If there are Klingons in the quadrant, the captain is informed
  45 **      that the condition is RED, and he is given a chance to put
  46 **      his shields up if the computer is working.
  47 **
  48 **      The flag `f' is set to disable the check for condition red.
  49 **      This mode is used in situations where you know you are going
  50 **      to be docked, i.e., abandon() and help().
  51 */
  52
  53 void
  54 initquad(int f)
  55 {
  56         int             i, j;
  57         int             rx, ry;
  58         int             nbases, nstars;
  59         struct quad     *q;
  60         int             nholes;
  61
  62         q = &Quad[Ship.quadx][Ship.quady];
  63
  64         /* ignored supernova'ed quadrants (this is checked again later anyway */
  65         if (q->stars < 0)
  66                 return;
  67         Etc.nkling = q->klings;
  68         nbases = q->bases;
  69         nstars = q->stars;
  70         nholes = q->holes;
  71
  72         /* have we blundered into a battle zone w/ shields down? */
  73         if (Etc.nkling > 0 && !f) {
  74                 printf("Condition RED\n");
  75                 Ship.cond = RED;
  76                 if (!damaged(COMPUTER))
  77                         shield(1);
  78         }
  79
  80         /* clear out the quadrant */
  81         for (i = 0; i < NSECTS; i++)
  82                 for (j = 0; j < NSECTS; j++)
  83                         Sect[i][j] = EMPTY;
  84
  85         /* initialize Enterprise */
  86         Sect[Ship.sectx][Ship.secty] = Ship.ship;
  87
  88         /* initialize Klingons */
  89         for (i = 0; i < Etc.nkling; i++) {
  90                 sector(&rx, &ry);
  91                 Sect[rx][ry] = KLINGON;
  92                 Etc.klingon[i].x = rx;
  93                 Etc.klingon[i].y = ry;
  94                 Etc.klingon[i].power = Param.klingpwr;
  95                 Etc.klingon[i].srndreq = 0;
  96         }
  97         compkldist(1);
  98
  99         /* initialize star base */
 100         if (nbases > 0) {
 101                 sector(&rx, &ry);
 102                 Sect[rx][ry] = BASE;
 103                 Etc.starbase.x = rx;
 104                 Etc.starbase.y = ry;
 105         }
 106
 107         /* initialize inhabited starsystem */
 108         if (q->qsystemname != 0) {
 109                 sector(&rx, &ry);
 110                 Sect[rx][ry] = INHABIT;
 111                 nstars -= 1;
 112         }
 113
 114         /* initialize black holes */
 115         for (i = 0; i < nholes; i++) {
 116                 sector(&rx, &ry);
 117                 Sect[rx][ry] = HOLE;
 118         }
 119
 120         /* initialize stars */
 121         for (i = 0; i < nstars; i++) {
 122                 sector(&rx, &ry);
 123                 Sect[rx][ry] = STAR;
 124         }
 125         Move.newquad = 1;
 126 }
 127
 128 void
 129 sector(int *x, int *y)
 130 {
 131         int     i, j;
 132
 133         do {
 134                 i = ranf(NSECTS);
 135                 j = ranf(NSECTS);
 136         } while (Sect[i][j] != EMPTY);
 137         *x = i;
 138         *y = j;
 139         return;
 140 }