xref: /dragonfly/games/trek/initquad.c (revision 7ff0fc30)
1 /*	@(#)initquad.c	8.1 (Berkeley) 5/31/93				*/
2 /*	$NetBSD: initquad.c,v 1.7 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 **  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 
129 void
130 sector(int *x, int *y)
131 {
132 	int	i, j;
133 
134 	do {
135 		i = ranf(NSECTS);
136 		j = ranf(NSECTS);
137 	} while (Sect[i][j] != EMPTY);
138 	*x = i;
139 	*y = j;
140 	return;
141 }
142