1 /* @(#)snova.c 8.1 (Berkeley) 5/31/93 */ 2 /* $NetBSD: snova.c,v 1.10 2018/02/08 09:05:16 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 <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(int x, int y) 60 { 61 int qx, qy; 62 int ix, iy = 0; 63 int f; 64 int dx, dy; 65 int n; 66 struct quad *q; 67 68 f = 0; 69 ix = x; 70 if (ix < 0) { 71 /* choose a quadrant */ 72 while (1) { 73 qx = ranf(NQUADS); 74 qy = ranf(NQUADS); 75 q = &Quad[qx][qy]; 76 if (q->stars > 0) 77 break; 78 } 79 if (Ship.quadx == qx && Ship.quady == qy) { 80 /* select a particular star */ 81 n = ranf(q->stars); 82 for (ix = 0; ix < NSECTS; ix++) { 83 for (iy = 0; iy < NSECTS; iy++) 84 if (Sect[ix][iy] == STAR || 85 Sect[ix][iy] == INHABIT) 86 if ((n -= 1) <= 0) 87 break; 88 if (n <= 0) 89 break; 90 } 91 f = 1; 92 } 93 } else { 94 /* current quadrant */ 95 iy = y; 96 qx = Ship.quadx; 97 qy = Ship.quady; 98 q = &Quad[qx][qy]; 99 f = 1; 100 } 101 if (f) { 102 /* supernova is in same quadrant as Enterprise */ 103 printf("\a\nRED ALERT: supernova occurring at %d,%d\n", ix, iy); 104 dx = ix - Ship.sectx; 105 dy = iy - Ship.secty; 106 if (dx * dx + dy * dy <= 2) { 107 printf("*** Emergency override attem"); 108 sleep(1); 109 printf("\n"); 110 lose(L_SNOVA); 111 } 112 q->scanned = 1000; 113 } else { 114 if (!damaged(SSRADIO)) { 115 q->scanned = 1000; 116 printf("\nUhura: Captain, Starfleet Command reports " 117 "a supernova\n"); 118 printf(" in quadrant %d,%d. Caution is advised\n", 119 qx, qy); 120 } 121 } 122 123 /* clear out the supernova'ed quadrant */ 124 dx = q->klings; 125 dy = q->stars; 126 Now.klings -= dx; 127 if (x >= 0) { 128 /* Enterprise caused supernova */ 129 Game.kills += dy; 130 if (q->bases) 131 killb(qx, qy); 132 Game.killk += dx; 133 } else { 134 if (q->bases) 135 killb(qx, qy); 136 } 137 killd(qx, qy, (x >= 0)); 138 q->stars = -1; 139 q->klings = 0; 140 if (Now.klings <= 0) { 141 printf("Lucky devil, that supernova destroyed the last " 142 "klingon\n"); 143 win(); 144 } 145 return; 146 } 147