1 /* $NetBSD: snova.c,v 1.9 2009/05/24 22:55:03 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[] = "@(#)snova.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 __RCSID("$NetBSD: snova.c,v 1.9 2009/05/24 22:55:03 dholland Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdio.h> 42 #include <unistd.h> 43 #include "trek.h" 44 45 /* 46 ** CAUSE SUPERNOVA TO OCCUR 47 ** 48 ** A supernova occurs. If 'ix' < 0, a random quadrant is chosen; 49 ** otherwise, the current quadrant is taken, and (ix, iy) give 50 ** the sector quadrants of the star which is blowing up. 51 ** 52 ** If the supernova turns out to be in the quadrant you are in, 53 ** you go into "emergency override mode", which tries to get you 54 ** out of the quadrant as fast as possible. However, if you 55 ** don't have enough fuel, or if you by chance run into something, 56 ** or some such thing, you blow up anyway. Oh yeh, if you are 57 ** within two sectors of the star, there is nothing that can 58 ** be done for you. 59 ** 60 ** When a star has gone supernova, the quadrant becomes uninhab- 61 ** itable for the rest of eternity, i.e., the game. If you ever 62 ** try stopping in such a quadrant, you will go into emergency 63 ** override mode. 64 */ 65 66 void 67 snova(int x, int y) 68 { 69 int qx, qy; 70 int ix, iy = 0; 71 int f; 72 int dx, dy; 73 int n; 74 struct quad *q; 75 76 f = 0; 77 ix = x; 78 if (ix < 0) { 79 /* choose a quadrant */ 80 while (1) { 81 qx = ranf(NQUADS); 82 qy = ranf(NQUADS); 83 q = &Quad[qx][qy]; 84 if (q->stars > 0) 85 break; 86 } 87 if (Ship.quadx == qx && Ship.quady == qy) { 88 /* select a particular star */ 89 n = ranf(q->stars); 90 for (ix = 0; ix < NSECTS; ix++) { 91 for (iy = 0; iy < NSECTS; iy++) 92 if (Sect[ix][iy] == STAR || 93 Sect[ix][iy] == INHABIT) 94 if ((n -= 1) <= 0) 95 break; 96 if (n <= 0) 97 break; 98 } 99 f = 1; 100 } 101 } else { 102 /* current quadrant */ 103 iy = y; 104 qx = Ship.quadx; 105 qy = Ship.quady; 106 q = &Quad[qx][qy]; 107 f = 1; 108 } 109 if (f) { 110 /* supernova is in same quadrant as Enterprise */ 111 printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy); 112 dx = ix - Ship.sectx; 113 dy = iy - Ship.secty; 114 if (dx * dx + dy * dy <= 2) { 115 printf("*** Emergency override attem"); 116 sleep(1); 117 printf("\n"); 118 lose(L_SNOVA); 119 } 120 q->scanned = 1000; 121 } else { 122 if (!damaged(SSRADIO)) { 123 q->scanned = 1000; 124 printf("\nUhura: Captain, Starfleet Command reports " 125 "a supernova\n"); 126 printf(" in quadrant %d,%d. Caution is advised\n", 127 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 /* Enterprise caused supernova */ 137 Game.kills += dy; 138 if (q->bases) 139 killb(qx, qy); 140 Game.killk += dx; 141 } else { 142 if (q->bases) 143 killb(qx, qy); 144 } 145 killd(qx, qy, (x >= 0)); 146 q->stars = -1; 147 q->klings = 0; 148 if (Now.klings <= 0) { 149 printf("Lucky devil, that supernova destroyed the last " 150 "klingon\n"); 151 win(); 152 } 153 return; 154 } 155