1 /* $OpenBSD: snova.c,v 1.6 2009/10/27 23:59:27 deraadt 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 #include "trek.h" 36 37 /* 38 ** CAUSE SUPERNOVA TO OCCUR 39 ** 40 ** A supernova occurs. If 'ix' < 0, a random quadrant is chosen; 41 ** otherwise, the current quadrant is taken, and (ix, iy) give 42 ** the sector quadrants of the star which is blowing up. 43 ** 44 ** If the supernova turns out to be in the quadrant you are in, 45 ** you go into "emergency override mode", which tries to get you 46 ** out of the quadrant as fast as possible. However, if you 47 ** don't have enough fuel, or if you by chance run into something, 48 ** or some such thing, you blow up anyway. Oh yeh, if you are 49 ** within two sectors of the star, there is nothing that can 50 ** be done for you. 51 ** 52 ** When a star has gone supernova, the quadrant becomes uninhab- 53 ** itable for the rest of eternity, i.e., the game. If you ever 54 ** try stopping in such a quadrant, you will go into emergency 55 ** override mode. 56 */ 57 58 void 59 snova(x, y) 60 int x, 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