1 /* $OpenBSD: warp.c,v 1.8 2016/01/07 14:37:51 mestre Exp $ */ 2 /* $NetBSD: warp.c,v 1.3 1995/04/22 10:59:40 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 <string.h> 35 #include <unistd.h> 36 37 #include "getpar.h" 38 #include "trek.h" 39 40 /* 41 ** MOVE UNDER WARP POWER 42 ** 43 ** This is both the "move" and the "ram" commands, differing 44 ** only in the flag 'fl'. It is also used for automatic 45 ** emergency override mode, when 'fl' is < 0 and 'c' and 'd' 46 ** are the course and distance to be moved. If 'fl' >= 0, 47 ** the course and distance are asked of the captain. 48 ** 49 ** The guts of this routine are in the routine move(), which 50 ** is shared with impulse(). Also, the working part of this 51 ** routine is very small; the rest is to handle the slight chance 52 ** that you may be moving at some riduculous speed. In that 53 ** case, there is code to handle time warps, etc. 54 */ 55 56 void 57 dowarp(int fl) 58 { 59 int c; 60 double d; 61 62 if (getcodi(&c, &d)) 63 return; 64 warp(fl, c, d); 65 } 66 67 void 68 warp(int fl, int c, double d) 69 { 70 char *p; 71 double power, dist, time, speed, frac; 72 int course, percent, i; 73 74 if (Ship.cond == DOCKED) 75 { 76 printf("%s is docked\n", Ship.shipname); 77 return; 78 } 79 if (damaged(WARP)) 80 { 81 out(WARP); 82 return; 83 } 84 85 course = c; 86 dist = d; 87 88 /* check to see that we are not using an absurd amount of power */ 89 power = (dist + 0.05) * Ship.warp3; 90 percent = 100 * power / Ship.energy + 0.5; 91 if (percent >= 85) 92 { 93 printf("Scotty: That would consume %d%% of our remaining energy.\n", 94 percent); 95 if (!getynpar("Are you sure that is wise")) 96 return; 97 } 98 99 /* compute the speed we will move at, and the time it will take */ 100 speed = Ship.warp2 / Param.warptime; 101 time = dist / speed; 102 103 /* check to see that that value is not ridiculous */ 104 percent = 100 * time / Now.time + 0.5; 105 if (percent >= 85) 106 { 107 printf("Spock: That would take %d%% of our remaining time.\n", 108 percent); 109 if (!getynpar("Are you sure that is wise")) 110 return; 111 } 112 113 /* compute how far we will go if we get damages */ 114 if (Ship.warp > 6.0 && ranf(100) < 20 + 15 * (Ship.warp - 6.0)) 115 { 116 frac = franf(); 117 dist *= frac; 118 time *= frac; 119 damage(WARP, (frac + 1.0) * Ship.warp * (franf() + 0.25) * 0.20); 120 } 121 122 /* do the move */ 123 Move.time = move(fl, course, time, speed); 124 125 /* see how far we actually went, and decrement energy appropriately */ 126 dist = Move.time * speed; 127 Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1); 128 129 /* test for bizarre events */ 130 if (Ship.warp <= 9.0) 131 return; 132 printf("\n\n ___ Speed exceeding warp nine ___\n\n"); 133 sleep(2); 134 printf("Ship's safety systems malfunction\n"); 135 sleep(2); 136 printf("Crew experiencing extreme sensory distortion\n"); 137 sleep(4); 138 if (ranf(100) >= 100 * dist) 139 { 140 printf("Equilibrium restored -- all systems normal\n"); 141 return; 142 } 143 144 /* select a bizarre thing to happen to us */ 145 percent = ranf(100); 146 if (percent < 70) 147 { 148 /* time warp */ 149 if (percent < 35 || !Game.snap) 150 { 151 /* positive time warp */ 152 time = (Ship.warp - 8.0) * dist * (franf() + 1.0); 153 Now.date += time; 154 printf("Positive time portal entered -- it is now Stardate %.2f\n", 155 Now.date); 156 for (i = 0; i < MAXEVENTS; i++) 157 { 158 percent = Event[i].evcode; 159 if (percent == E_FIXDV || percent == E_LRTB) 160 Event[i].date += time; 161 } 162 return; 163 } 164 165 /* s/he got lucky: a negative time portal */ 166 time = Now.date; 167 p = (char *) Etc.snapshot; 168 memcpy(p, Quad, sizeof Quad); 169 p += sizeof Quad; 170 memcpy(p, Event, sizeof Event); 171 p += sizeof Event; 172 memcpy(p, &Now, sizeof Now); 173 printf("Negative time portal entered -- it is now Stardate %.2f\n", 174 Now.date); 175 for (i = 0; i < MAXEVENTS; i++) 176 if (Event[i].evcode == E_FIXDV) 177 reschedule(&Event[i], Event[i].date - time); 178 return; 179 } 180 181 /* test for just a lot of damage */ 182 if (percent < 80) 183 lose(L_TOOFAST); 184 printf("Equilibrium restored -- extreme damage occurred to ship systems\n"); 185 for (i = 0; i < NDEV; i++) 186 damage(i, (3.0 * (franf() + franf()) + 1.0) * Param.damfac[i]); 187 Ship.shldup = 0; 188 } 189