1 /* $NetBSD: nova.c,v 1.8 2009/05/24 21:44:56 dholland 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[] = "@(#)nova.c 8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: nova.c,v 1.8 2009/05/24 21:44:56 dholland Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <stdio.h>
42 #include "trek.h"
43
44 /*
45 ** CAUSE A NOVA TO OCCUR
46 **
47 ** A nova occurs. It is the result of having a star hit with
48 ** a photon torpedo. There are several things which may happen.
49 ** The star may not be affected. It may go nova. It may turn
50 ** into a black hole. Any (yummy) it may go supernova.
51 **
52 ** Stars that go nova cause stars which surround them to undergo
53 ** the same probabilistic process. Klingons next to them are
54 ** destroyed. And if the starship is next to it, it gets zapped.
55 ** If the zap is too much, it gets destroyed.
56 */
57
58 void
nova(int x,int y)59 nova(int x, int y)
60 {
61 int i, j;
62 int se;
63
64 if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
65 return;
66 if (ranf(100) < 15) {
67 printf("Spock: Star at %d,%d failed to nova.\n", x, y);
68 return;
69 }
70 if (ranf(100) < 5) {
71 snova(x, y);
72 return;
73 }
74 printf("Spock: Star at %d,%d gone nova\n", x, y);
75
76 if (ranf(4) != 0) {
77 Sect[x][y] = EMPTY;
78 } else {
79 Sect[x][y] = HOLE;
80 Quad[Ship.quadx][Ship.quady].holes += 1;
81 }
82 Quad[Ship.quadx][Ship.quady].stars -= 1;
83 Game.kills += 1;
84 for (i = x - 1; i <= x + 1; i++) {
85 if (i < 0 || i >= NSECTS)
86 continue;
87 for (j = y - 1; j <= y + 1; j++) {
88 if (j < 0 || j >= NSECTS)
89 continue;
90 se = Sect[i][j];
91 switch (se) {
92
93 case EMPTY:
94 case HOLE:
95 break;
96
97 case KLINGON:
98 killk(i, j);
99 break;
100
101 case STAR:
102 nova(i, j);
103 break;
104
105 case INHABIT:
106 kills(i, j, -1);
107 break;
108
109 case BASE:
110 killb(i, j);
111 Game.killb += 1;
112 break;
113
114 case ENTERPRISE:
115 case QUEENE:
116 se = 2000;
117 if (Ship.shldup) {
118 if (Ship.shield >= se) {
119 Ship.shield -= se;
120 se = 0;
121 } else {
122 se -= Ship.shield;
123 Ship.shield = 0;
124 }
125 }
126 Ship.energy -= se;
127 if (Ship.energy <= 0)
128 lose(L_SUICID);
129 break;
130
131 default:
132 printf("Unknown object %c at %d,%d destroyed\n",
133 se, i, j);
134 Sect[i][j] = EMPTY;
135 break;
136 }
137 }
138 }
139 return;
140 }
141