| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | static char sccsid[] = "@(#)warp.c 5.1 (Berkeley) %G%"; |
| 9 | #endif not lint |
| 10 | |
| 11 | # include "trek.h" |
| 12 | |
| 13 | /* |
| 14 | ** MOVE UNDER WARP POWER |
| 15 | ** |
| 16 | ** This is both the "move" and the "ram" commands, differing |
| 17 | ** only in the flag 'fl'. It is also used for automatic |
| 18 | ** emergency override mode, when 'fl' is < 0 and 'c' and 'd' |
| 19 | ** are the course and distance to be moved. If 'fl' >= 0, |
| 20 | ** the course and distance are asked of the captain. |
| 21 | ** |
| 22 | ** The guts of this routine are in the routine move(), which |
| 23 | ** is shared with impulse(). Also, the working part of this |
| 24 | ** routine is very small; the rest is to handle the slight chance |
| 25 | ** that you may be moving at some riduculous speed. In that |
| 26 | ** case, there is code to handle time warps, etc. |
| 27 | */ |
| 28 | |
| 29 | warp(fl, c, d) |
| 30 | int fl, c; |
| 31 | double d; |
| 32 | { |
| 33 | int course; |
| 34 | double power; |
| 35 | double dist; |
| 36 | double time; |
| 37 | double speed; |
| 38 | double frac; |
| 39 | register int percent; |
| 40 | register int i; |
| 41 | extern double move(); |
| 42 | |
| 43 | if (Ship.cond == DOCKED) |
| 44 | return (printf("%s is docked\n", Ship.shipname)); |
| 45 | if (damaged(WARP)) |
| 46 | { |
| 47 | return (out(WARP)); |
| 48 | } |
| 49 | if (fl < 0) |
| 50 | { |
| 51 | course = c; |
| 52 | dist = d; |
| 53 | } |
| 54 | else |
| 55 | if (getcodi(&course, &dist)) |
| 56 | return; |
| 57 | |
| 58 | /* check to see that we are not using an absurd amount of power */ |
| 59 | power = (dist + 0.05) * Ship.warp3; |
| 60 | percent = 100 * power / Ship.energy + 0.5; |
| 61 | if (percent >= 85) |
| 62 | { |
| 63 | printf("Scotty: That would consume %d%% of our remaining energy.\n", |
| 64 | percent); |
| 65 | if (!getynpar("Are you sure that is wise")) |
| 66 | return; |
| 67 | } |
| 68 | |
| 69 | /* compute the speed we will move at, and the time it will take */ |
| 70 | speed = Ship.warp2 / Param.warptime; |
| 71 | time = dist / speed; |
| 72 | |
| 73 | /* check to see that that value is not ridiculous */ |
| 74 | percent = 100 * time / Now.time + 0.5; |
| 75 | if (percent >= 85) |
| 76 | { |
| 77 | printf("Spock: That would take %d%% of our remaining time.\n", |
| 78 | percent); |
| 79 | if (!getynpar("Are you sure that is wise")) |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | /* compute how far we will go if we get damages */ |
| 84 | if (Ship.warp > 6.0 && ranf(100) < 20 + 15 * (Ship.warp - 6.0)) |
| 85 | { |
| 86 | frac = franf(); |
| 87 | dist *= frac; |
| 88 | time *= frac; |
| 89 | damage(WARP, (frac + 1.0) * Ship.warp * (franf() + 0.25) * 0.20); |
| 90 | } |
| 91 | |
| 92 | /* do the move */ |
| 93 | Move.time = move(fl, course, time, speed); |
| 94 | |
| 95 | /* see how far we actually went, and decrement energy appropriately */ |
| 96 | dist = Move.time * speed; |
| 97 | Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1); |
| 98 | |
| 99 | /* test for bizarre events */ |
| 100 | if (Ship.warp <= 9.0) |
| 101 | return; |
| 102 | printf("\n\n ___ Speed exceeding warp nine ___\n\n"); |
| 103 | sleep(2); |
| 104 | printf("Ship's safety systems malfunction\n"); |
| 105 | sleep(2); |
| 106 | printf("Crew experiencing extreme sensory distortion\n"); |
| 107 | sleep(4); |
| 108 | if (ranf(100) >= 100 * dist) |
| 109 | { |
| 110 | return (printf("Equilibrium restored -- all systems normal\n")); |
| 111 | } |
| 112 | |
| 113 | /* select a bizzare thing to happen to us */ |
| 114 | percent = ranf(100); |
| 115 | if (percent < 70) |
| 116 | { |
| 117 | /* time warp */ |
| 118 | if (percent < 35 || !Game.snap) |
| 119 | { |
| 120 | /* positive time warp */ |
| 121 | time = (Ship.warp - 8.0) * dist * (franf() + 1.0); |
| 122 | Now.date += time; |
| 123 | printf("Positive time portal entered -- it is now Stardate %.2f\n", |
| 124 | Now.date); |
| 125 | for (i = 0; i < MAXEVENTS; i++) |
| 126 | { |
| 127 | percent = Event[i].evcode; |
| 128 | if (percent == E_FIXDV || percent == E_LRTB) |
| 129 | Event[i].date += time; |
| 130 | } |
| 131 | return; |
| 132 | } |
| 133 | |
| 134 | /* s/he got lucky: a negative time portal */ |
| 135 | time = Now.date; |
| 136 | i = (int) Etc.snapshot; |
| 137 | bmove(i, Quad, sizeof Quad); |
| 138 | bmove(i += sizeof Quad, Event, sizeof Event); |
| 139 | bmove(i += sizeof Event, &Now, sizeof Now); |
| 140 | printf("Negative time portal entered -- it is now Stardate %.2f\n", |
| 141 | Now.date); |
| 142 | for (i = 0; i < MAXEVENTS; i++) |
| 143 | if (Event[i].evcode == E_FIXDV) |
| 144 | reschedule(&Event[i], Event[i].date - time); |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | /* test for just a lot of damage */ |
| 149 | if (percent < 80) |
| 150 | lose(L_TOOFAST); |
| 151 | printf("Equilibrium restored -- extreme damage occured to ship systems\n"); |
| 152 | for (i = 0; i < NDEV; i++) |
| 153 | damage(i, (3.0 * (franf() + franf()) + 1.0) * Param.damfac[i]); |
| 154 | Ship.shldup = 0; |
| 155 | } |