1 /* $OpenBSD: nova.c,v 1.7 2016/01/07 14:37:51 mestre Exp $ */
2 /* $NetBSD: nova.c,v 1.3 1995/04/22 10:59:14 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
35 #include "trek.h"
36
37 /*
38 ** CAUSE A NOVA TO OCCUR
39 **
40 ** A nova occurs. It is the result of having a star hit with
41 ** a photon torpedo. There are several things which may happen.
42 ** The star may not be affected. It may go nova. It may turn
43 ** into a black hole. Any (yummy) it may go supernova.
44 **
45 ** Stars that go nova cause stars which surround them to undergo
46 ** the same probabilistic process. Klingons next to them are
47 ** destroyed. And if the starship is next to it, it gets zapped.
48 ** If the zap is too much, it gets destroyed.
49 */
50
51 void
nova(int x,int y)52 nova(int x, int y)
53 {
54 int i, j;
55 int se;
56
57 if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
58 return;
59 if (ranf(100) < 15)
60 {
61 printf("Spock: Star at %d,%d failed to nova.\n", x, y);
62 return;
63 }
64 if (ranf(100) < 5)
65 {
66 snova(x, y);
67 return;
68 }
69 printf("Spock: Star at %d,%d gone nova\n", x, y);
70
71 if (ranf(4) != 0)
72 Sect[x][y] = EMPTY;
73 else
74 {
75 Sect[x][y] = HOLE;
76 Quad[Ship.quadx][Ship.quady].holes += 1;
77 }
78 Quad[Ship.quadx][Ship.quady].stars -= 1;
79 Game.kills += 1;
80 for (i = x - 1; i <= x + 1; i++)
81 {
82 if (i < 0 || i >= NSECTS)
83 continue;
84 for (j = y - 1; j <= y + 1; j++)
85 {
86 if (j < 0 || j >= NSECTS)
87 continue;
88 se = Sect[i][j];
89 switch (se)
90 {
91
92 case EMPTY:
93 case HOLE:
94 break;
95
96 case KLINGON:
97 killk(i, j);
98 break;
99
100 case STAR:
101 nova(i, j);
102 break;
103
104 case INHABIT:
105 kills(i, j, -1);
106 break;
107
108 case BASE:
109 killb(i, j);
110 Game.killb += 1;
111 break;
112
113 case ENTERPRISE:
114 case QUEENE:
115 se = 2000;
116 if (Ship.shldup)
117 {
118 if (Ship.shield >= se)
119 {
120 Ship.shield -= se;
121 se = 0;
122 }
123 else
124 {
125 se -= Ship.shield;
126 Ship.shield = 0;
127 }
128 }
129 Ship.energy -= se;
130 if (Ship.energy <= 0)
131 lose(L_SUICID);
132 break;
133
134 default:
135 printf("Unknown object %c at %d,%d destroyed\n",
136 se, i, j);
137 Sect[i][j] = EMPTY;
138 break;
139 }
140 }
141 }
142 }
143