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