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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | static char sccsid[] = "@(#)warp.c 5.4 (Berkeley) 6/1/90"; | |
36 | #endif /* not lint */ | |
37 | ||
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 | warp(fl, c, d) | |
57 | int fl, c; | |
58 | double d; | |
59 | { | |
60 | int course; | |
61 | double power; | |
62 | double dist; | |
63 | double time; | |
64 | double speed; | |
65 | double frac; | |
66 | register int percent; | |
67 | register int i; | |
68 | extern double move(); | |
69 | ||
70 | if (Ship.cond == DOCKED) | |
71 | return (printf("%s is docked\n", Ship.shipname)); | |
72 | if (damaged(WARP)) | |
73 | { | |
74 | return (out(WARP)); | |
75 | } | |
76 | if (fl < 0) | |
77 | { | |
78 | course = c; | |
79 | dist = d; | |
80 | } | |
81 | else | |
82 | if (getcodi(&course, &dist)) | |
83 | return; | |
84 | ||
85 | /* check to see that we are not using an absurd amount of power */ | |
86 | power = (dist + 0.05) * Ship.warp3; | |
87 | percent = 100 * power / Ship.energy + 0.5; | |
88 | if (percent >= 85) | |
89 | { | |
90 | printf("Scotty: That would consume %d%% of our remaining energy.\n", | |
91 | percent); | |
92 | if (!getynpar("Are you sure that is wise")) | |
93 | return; | |
94 | } | |
95 | ||
96 | /* compute the speed we will move at, and the time it will take */ | |
97 | speed = Ship.warp2 / Param.warptime; | |
98 | time = dist / speed; | |
99 | ||
100 | /* check to see that that value is not ridiculous */ | |
101 | percent = 100 * time / Now.time + 0.5; | |
102 | if (percent >= 85) | |
103 | { | |
104 | printf("Spock: That would take %d%% of our remaining time.\n", | |
105 | percent); | |
106 | if (!getynpar("Are you sure that is wise")) | |
107 | return; | |
108 | } | |
109 | ||
110 | /* compute how far we will go if we get damages */ | |
111 | if (Ship.warp > 6.0 && ranf(100) < 20 + 15 * (Ship.warp - 6.0)) | |
112 | { | |
113 | frac = franf(); | |
114 | dist *= frac; | |
115 | time *= frac; | |
116 | damage(WARP, (frac + 1.0) * Ship.warp * (franf() + 0.25) * 0.20); | |
117 | } | |
118 | ||
119 | /* do the move */ | |
120 | Move.time = move(fl, course, time, speed); | |
121 | ||
122 | /* see how far we actually went, and decrement energy appropriately */ | |
123 | dist = Move.time * speed; | |
124 | Ship.energy -= dist * Ship.warp3 * (Ship.shldup + 1); | |
125 | ||
126 | /* test for bizarre events */ | |
127 | if (Ship.warp <= 9.0) | |
128 | return; | |
129 | printf("\n\n ___ Speed exceeding warp nine ___\n\n"); | |
130 | sleep(2); | |
131 | printf("Ship's safety systems malfunction\n"); | |
132 | sleep(2); | |
133 | printf("Crew experiencing extreme sensory distortion\n"); | |
134 | sleep(4); | |
135 | if (ranf(100) >= 100 * dist) | |
136 | { | |
137 | return (printf("Equilibrium restored -- all systems normal\n")); | |
138 | } | |
139 | ||
140 | /* select a bizzare thing to happen to us */ | |
141 | percent = ranf(100); | |
142 | if (percent < 70) | |
143 | { | |
144 | /* time warp */ | |
145 | if (percent < 35 || !Game.snap) | |
146 | { | |
147 | /* positive time warp */ | |
148 | time = (Ship.warp - 8.0) * dist * (franf() + 1.0); | |
149 | Now.date += time; | |
150 | printf("Positive time portal entered -- it is now Stardate %.2f\n", | |
151 | Now.date); | |
152 | for (i = 0; i < MAXEVENTS; i++) | |
153 | { | |
154 | percent = Event[i].evcode; | |
155 | if (percent == E_FIXDV || percent == E_LRTB) | |
156 | Event[i].date += time; | |
157 | } | |
158 | return; | |
159 | } | |
160 | ||
161 | /* s/he got lucky: a negative time portal */ | |
162 | time = Now.date; | |
163 | i = (int) Etc.snapshot; | |
164 | bmove(i, Quad, sizeof Quad); | |
165 | bmove(i += sizeof Quad, Event, sizeof Event); | |
166 | bmove(i += sizeof Event, &Now, sizeof Now); | |
167 | printf("Negative time portal entered -- it is now Stardate %.2f\n", | |
168 | Now.date); | |
169 | for (i = 0; i < MAXEVENTS; i++) | |
170 | if (Event[i].evcode == E_FIXDV) | |
171 | reschedule(&Event[i], Event[i].date - time); | |
172 | return; | |
173 | } | |
174 | ||
175 | /* test for just a lot of damage */ | |
176 | if (percent < 80) | |
177 | lose(L_TOOFAST); | |
178 | printf("Equilibrium restored -- extreme damage occured to ship systems\n"); | |
179 | for (i = 0; i < NDEV; i++) | |
180 | damage(i, (3.0 * (franf() + franf()) + 1.0) * Param.damfac[i]); | |
181 | Ship.shldup = 0; | |
182 | } |