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1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
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3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
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6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
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16 | */ |
17 | ||
a7aa4907 | 18 | #ifndef lint |
d99e6414 | 19 | static char sccsid[] = "@(#)warp.c 5.3 (Berkeley) %G%"; |
e9fb6bea | 20 | #endif /* not lint */ |
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21 | |
22 | # include "trek.h" | |
23 | ||
24 | /* | |
25 | ** MOVE UNDER WARP POWER | |
26 | ** | |
27 | ** This is both the "move" and the "ram" commands, differing | |
28 | ** only in the flag 'fl'. It is also used for automatic | |
29 | ** emergency override mode, when 'fl' is < 0 and 'c' and 'd' | |
30 | ** are the course and distance to be moved. If 'fl' >= 0, | |
31 | ** the course and distance are asked of the captain. | |
32 | ** | |
33 | ** The guts of this routine are in the routine move(), which | |
34 | ** is shared with impulse(). Also, the working part of this | |
35 | ** routine is very small; the rest is to handle the slight chance | |
36 | ** that you may be moving at some riduculous speed. In that | |
37 | ** case, there is code to handle time warps, etc. | |
38 | */ | |
39 | ||
40 | warp(fl, c, d) | |
41 | int fl, c; | |
42 | double d; | |
43 | { | |
44 | int course; | |
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45 | double power; |
46 | double dist; | |
47 | double time; | |
48 | double speed; | |
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49 | double frac; |
50 | register int percent; | |
51 | register int i; | |
06d69904 | 52 | extern double move(); |
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53 | |
54 | if (Ship.cond == DOCKED) | |
55 | return (printf("%s is docked\n", Ship.shipname)); | |
56 | if (damaged(WARP)) | |
57 | { | |
58 | return (out(WARP)); | |
59 | } | |
60 | if (fl < 0) | |
61 | { | |
62 | course = c; | |
63 | dist = d; | |
64 | } | |
65 | else | |
66 | if (getcodi(&course, &dist)) | |
67 | return; | |
68 | ||
69 | /* check to see that we are not using an absurd amount of power */ | |
70 | power = (dist + 0.05) * Ship.warp3; | |
71 | percent = 100 * power / Ship.energy + 0.5; | |
72 | if (percent >= 85) | |
73 | { | |
74 | printf("Scotty: That would consume %d%% of our remaining energy.\n", | |
75 | percent); | |
76 | if (!getynpar("Are you sure that is wise")) | |
77 | return; | |
78 | } | |
79 | ||
80 | /* compute the speed we will move at, and the time it will take */ | |
81 | speed = Ship.warp2 / Param.warptime; | |
82 | time = dist / speed; | |
83 | ||
84 | /* check to see that that value is not ridiculous */ | |
85 | percent = 100 * time / Now.time + 0.5; | |
86 | if (percent >= 85) | |
87 | { | |
88 | printf("Spock: That would take %d%% of our remaining time.\n", | |
89 | percent); | |
90 | if (!getynpar("Are you sure that is wise")) | |
91 | return; | |
92 | } | |
93 | ||
94 | /* compute how far we will go if we get damages */ | |
95 | if (Ship.warp > 6.0 && ranf(100) < 20 + 15 * (Ship.warp - 6.0)) | |
96 | { | |
97 | frac = franf(); | |
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98 | dist *= frac; |
99 | time *= frac; | |
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100 | damage(WARP, (frac + 1.0) * Ship.warp * (franf() + 0.25) * 0.20); |
101 | } | |
102 | ||
103 | /* do the move */ | |
104 | Move.time = move(fl, course, time, speed); | |
105 | ||
106 | /* see how far we actually went, and decrement energy appropriately */ | |
107 | dist = Move.time * speed; | |
06d69904 | 108 | Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1); |
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109 | |
110 | /* test for bizarre events */ | |
111 | if (Ship.warp <= 9.0) | |
112 | return; | |
113 | printf("\n\n ___ Speed exceeding warp nine ___\n\n"); | |
114 | sleep(2); | |
115 | printf("Ship's safety systems malfunction\n"); | |
116 | sleep(2); | |
117 | printf("Crew experiencing extreme sensory distortion\n"); | |
118 | sleep(4); | |
119 | if (ranf(100) >= 100 * dist) | |
120 | { | |
121 | return (printf("Equilibrium restored -- all systems normal\n")); | |
122 | } | |
123 | ||
124 | /* select a bizzare thing to happen to us */ | |
125 | percent = ranf(100); | |
126 | if (percent < 70) | |
127 | { | |
128 | /* time warp */ | |
129 | if (percent < 35 || !Game.snap) | |
130 | { | |
131 | /* positive time warp */ | |
132 | time = (Ship.warp - 8.0) * dist * (franf() + 1.0); | |
06d69904 | 133 | Now.date += time; |
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134 | printf("Positive time portal entered -- it is now Stardate %.2f\n", |
135 | Now.date); | |
136 | for (i = 0; i < MAXEVENTS; i++) | |
137 | { | |
138 | percent = Event[i].evcode; | |
139 | if (percent == E_FIXDV || percent == E_LRTB) | |
06d69904 | 140 | Event[i].date += time; |
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141 | } |
142 | return; | |
143 | } | |
144 | ||
145 | /* s/he got lucky: a negative time portal */ | |
146 | time = Now.date; | |
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147 | i = (int) Etc.snapshot; |
148 | bmove(i, Quad, sizeof Quad); | |
149 | bmove(i += sizeof Quad, Event, sizeof Event); | |
150 | bmove(i += sizeof Event, &Now, sizeof Now); | |
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151 | printf("Negative time portal entered -- it is now Stardate %.2f\n", |
152 | Now.date); | |
153 | for (i = 0; i < MAXEVENTS; i++) | |
154 | if (Event[i].evcode == E_FIXDV) | |
155 | reschedule(&Event[i], Event[i].date - time); | |
156 | return; | |
157 | } | |
158 | ||
159 | /* test for just a lot of damage */ | |
160 | if (percent < 80) | |
161 | lose(L_TOOFAST); | |
162 | printf("Equilibrium restored -- extreme damage occured to ship systems\n"); | |
163 | for (i = 0; i < NDEV; i++) | |
164 | damage(i, (3.0 * (franf() + franf()) + 1.0) * Param.damfac[i]); | |
165 | Ship.shldup = 0; | |
166 | } |