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1 /* $NetBSD: snova.c,v 1.5 2003/08/07 09:37:54 agc 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[] = "@(#)snova.c 8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: snova.c,v 1.5 2003/08/07 09:37:54 agc Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <stdio.h>
42 #include <unistd.h>
43 #include "trek.h"
44
45 /*
46 ** CAUSE SUPERNOVA TO OCCUR
47 **
48 ** A supernova occurs. If 'ix' < 0, a random quadrant is chosen;
49 ** otherwise, the current quadrant is taken, and (ix, iy) give
50 ** the sector quadrants of the star which is blowing up.
51 **
52 ** If the supernova turns out to be in the quadrant you are in,
53 ** you go into "emergency override mode", which tries to get you
54 ** out of the quadrant as fast as possible. However, if you
55 ** don't have enough fuel, or if you by chance run into something,
56 ** or some such thing, you blow up anyway. Oh yeh, if you are
57 ** within two sectors of the star, there is nothing that can
58 ** be done for you.
59 **
60 ** When a star has gone supernova, the quadrant becomes uninhab-
61 ** itable for the rest of eternity, i.e., the game. If you ever
62 ** try stopping in such a quadrant, you will go into emergency
63 ** override mode.
64 */
65
66 void
67 snova(x, y)
68 int x, y;
69 {
70 int qx, qy;
71 int ix, iy = 0;
72 int f;
73 int dx, dy;
74 int n;
75 struct quad *q;
76
77 f = 0;
78 ix = x;
79 if (ix < 0)
80 {
81 /* choose a quadrant */
82 while (1)
83 {
84 qx = ranf(NQUADS);
85 qy = ranf(NQUADS);
86 q = &Quad[qx][qy];
87 if (q->stars > 0)
88 break;
89 }
90 if (Ship.quadx == qx && Ship.quady == qy)
91 {
92 /* select a particular star */
93 n = ranf(q->stars);
94 for (ix = 0; ix < NSECTS; ix++)
95 {
96 for (iy = 0; iy < NSECTS; iy++)
97 if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
98 if ((n -= 1) <= 0)
99 break;
100 if (n <= 0)
101 break;
102 }
103 f = 1;
104 }
105 }
106 else
107 {
108 /* current quadrant */
109 iy = y;
110 qx = Ship.quadx;
111 qy = Ship.quady;
112 q = &Quad[qx][qy];
113 f = 1;
114 }
115 if (f)
116 {
117 /* supernova is in same quadrant as Enterprise */
118 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
119 dx = ix - Ship.sectx;
120 dy = iy - Ship.secty;
121 if (dx * dx + dy * dy <= 2)
122 {
123 printf("*** Emergency override attem");
124 sleep(1);
125 printf("\n");
126 lose(L_SNOVA);
127 }
128 q->scanned = 1000;
129 }
130 else
131 {
132 if (!damaged(SSRADIO))
133 {
134 q->scanned = 1000;
135 printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
136 printf(" in quadrant %d,%d. Caution is advised\n", qx, qy);
137 }
138 }
139
140 /* clear out the supernova'ed quadrant */
141 dx = q->klings;
142 dy = q->stars;
143 Now.klings -= dx;
144 if (x >= 0)
145 {
146 /* Enterprise caused supernova */
147 Game.kills += dy;
148 if (q->bases)
149 killb(qx, qy);
150 Game.killk += dx;
151 }
152 else
153 if (q->bases)
154 killb(qx, qy);
155 killd(qx, qy, (x >= 0));
156 q->stars = -1;
157 q->klings = 0;
158 if (Now.klings <= 0)
159 {
160 printf("Lucky devil, that supernova destroyed the last klingon\n");
161 win();
162 }
163 return;
164 }