2 * Copyright (c) 1980, 1993
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6 * modification, are permitted provided that the following conditions
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)computer.c 8.1 (Berkeley) 5/31/93
30 * $FreeBSD: src/games/trek/computer.c,v 1.5 1999/11/30 03:49:45 billf Exp $
36 static int kalc(int, int, int, int, double *);
37 static void prkalc(int, double);
42 ** A computer request is fetched from the captain. The requests
45 ** chart -- print a star chart of the known galaxy. This includes
46 ** every quadrant that has ever had a long range or
47 ** a short range scan done of it, plus the location of
48 ** all starbases. This is of course updated by any sub-
49 ** space radio broadcasts (unless the radio is out).
50 ** The format is the same as that of a long range scan
51 ** except that ".1." indicates that a starbase exists
52 ** but we know nothing else.
54 ** trajectory -- gives the course and distance to every know
55 ** Klingon in the quadrant. Obviously this fails if the
56 ** short range scanners are out.
58 ** course -- gives a course computation from whereever you are
59 ** to any specified location. If the course begins
60 ** with a slash, the current quadrant is taken.
61 ** Otherwise the input is quadrant and sector coordi-
62 ** nates of the target sector.
64 ** move -- identical to course, except that the move is performed.
66 ** score -- prints out the current score.
68 ** pheff -- "PHaser EFFectiveness" at a given distance. Tells
69 ** you how much stuff you need to make it work.
71 ** warpcost -- Gives you the cost in time and units to move for
72 ** a given distance under a given warp speed.
74 ** impcost -- Same for the impulse engines.
76 ** distresslist -- Gives a list of the currently known starsystems
77 ** or starbases which are distressed, together with their
78 ** quadrant coordinates.
80 ** If a command is terminated with a semicolon, you remain in
81 ** the computer; otherwise, you escape immediately to the main
85 struct cvntab Cputab
[] = {
86 { "ch", "art", (cmdfun
)1, 0 },
87 { "t", "rajectory", (cmdfun
)2, 0 },
88 { "c", "ourse", (cmdfun
)3, 0 },
89 { "m", "ove", (cmdfun
)3, 1 },
90 { "s", "core", (cmdfun
)4, 0 },
91 { "p", "heff", (cmdfun
)5, 0 },
92 { "w", "arpcost", (cmdfun
)6, 0 },
93 { "i", "mpcost", (cmdfun
)7, 0 },
94 { "d", "istresslist", (cmdfun
)8, 0 },
95 { NULL
, NULL
, NULL
, 0 }
99 computer(int v __unused
)
112 if (check_out(COMPUTER
))
115 r
= getcodpar("\nRequest", Cputab
);
116 switch ((long)r
->value
) {
118 case 1: /* star chart */
119 printf("Computer record of galaxy for all long range sensor scans\n\n");
121 /* print top header */
122 for (i
= 0; i
< NQUADS
; i
++)
125 for (i
= 0; i
< NQUADS
; i
++) {
127 for (j
= 0; j
< NQUADS
; j
++) {
128 if (i
== Ship
.quadx
&& j
== Ship
.quady
)
134 /* 1000 or 1001 is special case */
135 if (q
->scanned
>= 1000)
136 if (q
->scanned
> 1000)
144 printf("%3d ", q
->scanned
);
149 /* print bottom footer */
150 for (i
= 0; i
< NQUADS
; i
++)
155 case 2: /* trajectory */
156 if (check_out(SRSCAN
)) {
159 if (Etc
.nkling
<= 0) {
160 printf("No Klingons in this quadrant\n");
163 /* for each Klingon, give the course & distance */
164 for (i
= 0; i
< Etc
.nkling
; i
++) {
165 printf("Klingon at %d,%d", Etc
.klingon
[i
].x
, Etc
.klingon
[i
].y
);
166 course
= kalc(Ship
.quadx
, Ship
.quady
, Etc
.klingon
[i
].x
, Etc
.klingon
[i
].y
, &dist
);
167 prkalc(course
, dist
);
171 case 3: /* course calculation */
172 if (readdelim('/')) {
176 ix
= getintpar("Quadrant");
177 if (ix
< 0 || ix
>= NQUADS
)
179 iy
= getintpar("q-y");
180 if (iy
< 0 || iy
>= NQUADS
)
185 ix
= getintpar("Sector");
186 if (ix
< 0 || ix
>= NSECTS
)
188 iy
= getintpar("s-y");
189 if (iy
< 0 || iy
>= NSECTS
)
191 course
= kalc(tqx
, tqy
, ix
, iy
, &dist
);
193 warp(-1, course
, dist
);
196 printf("%d,%d/%d,%d to %d,%d/%d,%d",
197 Ship
.quadx
, Ship
.quady
, Ship
.sectx
, Ship
.secty
, tqx
, tqy
, ix
, iy
);
198 prkalc(course
, dist
);
205 case 5: /* phaser effectiveness */
206 dist
= getfltpar("range");
210 cost
= pow(0.90, dist
) * 98.0 + 0.5;
211 printf("Phasers are %d%% effective at that range\n", cost
);
214 case 6: /* warp cost (time/energy) */
215 dist
= getfltpar("distance");
218 warpfact
= getfltpar("warp factor");
220 warpfact
= Ship
.warp
;
221 cost
= (dist
+ 0.05) * warpfact
* warpfact
* warpfact
;
222 p_time
= Param
.warptime
* dist
/ (warpfact
* warpfact
);
223 printf("Warp %.2f distance %.2f cost %.2f stardates %d (%d w/ shlds up) units\n",
224 warpfact
, dist
, p_time
, cost
, cost
+ cost
);
227 case 7: /* impulse cost */
228 dist
= getfltpar("distance");
231 cost
= 20 + 100 * dist
;
232 p_time
= dist
/ 0.095;
233 printf("Distance %.2f cost %.2f stardates %d units\n",
237 case 8: /* distresslist */
240 /* scan the event list */
241 for (i
= 0; i
< MAXEVENTS
; i
++) {
243 /* ignore hidden entries */
244 if (e
->evcode
& E_HIDDEN
)
246 switch (e
->evcode
& E_EVENT
) {
249 printf("Klingon is attacking starbase in quadrant %d,%d\n",
256 printf("Starsystem %s in quadrant %d,%d is distressed\n",
257 Systemname
[e
->systemname
], e
->x
, e
->y
);
263 printf("No known distress calls are active\n");
269 * Skip to next semicolon or newline. Semicolon
270 * means get new computer request; newline means
271 * exit computer mode.
273 while ((i
= cgetc(0)) != ';') {
286 ** Course Calculation
288 ** Computes and outputs the course and distance from position
289 ** sqx,sqy/ssx,ssy to tqx,tqy/tsx,tsy.
293 kalc(int tqx
, int tqy
, int tsx
, int tsy
, double *dist
)
300 /* normalize to quadrant distances */
302 dx
= (Ship
.quadx
+ Ship
.sectx
/ quadsize
) - (tqx
+ tsx
/ quadsize
);
303 dy
= (tqy
+ tsy
/ quadsize
) - (Ship
.quady
+ Ship
.secty
/ quadsize
);
306 angle
= atan2(dy
, dx
);
307 /* make it 0 -> 2 pi */
309 angle
+= 6.283185307;
310 /* convert from radians to degrees */
311 course
= angle
* 57.29577951 + 0.5;
312 dx
= dx
* dx
+ dy
* dy
;
318 prkalc(int course
, double dist
)
320 printf(": course %d dist %.3f\n", course
, dist
);