1 /* $OpenBSD: snova.c,v 1.8 2016/01/07 14:37:51 mestre Exp $ */
2 /* $NetBSD: snova.c,v 1.3 1995/04/22 10:59:29 cgd 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 <unistd.h>
35
36 #include "trek.h"
37
38 /*
39 ** CAUSE SUPERNOVA TO OCCUR
40 **
41 ** A supernova occurs. If 'ix' < 0, a random quadrant is chosen;
42 ** otherwise, the current quadrant is taken, and (ix, iy) give
43 ** the sector quadrants of the star which is blowing up.
44 **
45 ** If the supernova turns out to be in the quadrant you are in,
46 ** you go into "emergency override mode", which tries to get you
47 ** out of the quadrant as fast as possible. However, if you
48 ** don't have enough fuel, or if you by chance run into something,
49 ** or some such thing, you blow up anyway. Oh yeh, if you are
50 ** within two sectors of the star, there is nothing that can
51 ** be done for you.
52 **
53 ** When a star has gone supernova, the quadrant becomes uninhab-
54 ** itable for the rest of eternity, i.e., the game. If you ever
55 ** try stopping in such a quadrant, you will go into emergency
56 ** override mode.
57 */
58
59 void
snova(int x,int y)60 snova(int x, int y)
61 {
62 int qx, qy;
63 int ix, iy = 0;
64 int f, n;
65 int dx, dy;
66 struct quad *q;
67
68 f = 0;
69 ix = x;
70 if (ix < 0)
71 {
72 /* choose a quadrant */
73 while (1)
74 {
75 qx = ranf(NQUADS);
76 qy = ranf(NQUADS);
77 q = &Quad[qx][qy];
78 if (q->stars > 0)
79 break;
80 }
81 if (Ship.quadx == qx && Ship.quady == qy)
82 {
83 /* select a particular star */
84 n = ranf(q->stars);
85 for (ix = 0; ix < NSECTS; ix++)
86 {
87 for (iy = 0; iy < NSECTS; iy++)
88 if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
89 if ((n -= 1) <= 0)
90 break;
91 if (n <= 0)
92 break;
93 }
94 f = 1;
95 }
96 }
97 else
98 {
99 /* current quadrant */
100 iy = y;
101 qx = Ship.quadx;
102 qy = Ship.quady;
103 q = &Quad[qx][qy];
104 f = 1;
105 }
106 if (f)
107 {
108 /* supernova is in same quadrant as Enterprise */
109 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
110 dx = ix - Ship.sectx;
111 dy = iy - Ship.secty;
112 if (dx * dx + dy * dy <= 2)
113 {
114 printf("*** Emergency override attem");
115 sleep(1);
116 printf("\n");
117 lose(L_SNOVA);
118 }
119 q->scanned = 1000;
120 }
121 else
122 {
123 if (!damaged(SSRADIO))
124 {
125 q->scanned = 1000;
126 printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
127 printf(" in quadrant %d,%d. Caution is advised\n", qx, qy);
128 }
129 }
130
131 /* clear out the supernova'ed quadrant */
132 dx = q->klings;
133 dy = q->stars;
134 Now.klings -= dx;
135 if (x >= 0)
136 {
137 /* Enterprise caused supernova */
138 Game.kills += dy;
139 if (q->bases)
140 killb(qx, qy);
141 Game.killk += dx;
142 }
143 else
144 if (q->bases)
145 killb(qx, qy);
146 killd(qx, qy, (x >= 0));
147 q->stars = -1;
148 q->klings = 0;
149 if (Now.klings <= 0)
150 {
151 printf("Lucky devil, that supernova destroyed the last klingon\n");
152 win();
153 }
154 }
155