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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 | ||
a7aa4907 | 7 | #ifndef lint |
9758240b | 8 | static char sccsid[] = "@(#)warp.c 5.1 (Berkeley) %G%"; |
a7aa4907 KM |
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; | |
06d69904 KL |
34 | double power; |
35 | double dist; | |
36 | double time; | |
37 | double speed; | |
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38 | double frac; |
39 | register int percent; | |
40 | register int i; | |
06d69904 | 41 | extern double move(); |
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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(); | |
06d69904 KL |
87 | dist *= frac; |
88 | time *= frac; | |
a7aa4907 KM |
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; | |
06d69904 | 97 | Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1); |
a7aa4907 KM |
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); | |
06d69904 | 122 | Now.date += time; |
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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) | |
06d69904 | 129 | Event[i].date += time; |
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130 | } |
131 | return; | |
132 | } | |
133 | ||
134 | /* s/he got lucky: a negative time portal */ | |
135 | time = Now.date; | |
06d69904 KL |
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); | |
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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 | } |