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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)computer.c 4.8 (Berkeley) 6/1/90";
- #endif /* not lint */
-
- # include "trek.h"
- # include "getpar.h"
- # include <stdio.h>
- /*
- ** On-Board Computer
- **
- ** A computer request is fetched from the captain. The requests
- ** are:
- **
- ** chart -- print a star chart of the known galaxy. This includes
- ** every quadrant that has ever had a long range or
- ** a short range scan done of it, plus the location of
- ** all starbases. This is of course updated by any sub-
- ** space radio broadcasts (unless the radio is out).
- ** The format is the same as that of a long range scan
- ** except that ".1." indicates that a starbase exists
- ** but we know nothing else.
- **
- ** trajectory -- gives the course and distance to every know
- ** Klingon in the quadrant. Obviously this fails if the
- ** short range scanners are out.
- **
- ** course -- gives a course computation from whereever you are
- ** to any specified location. If the course begins
- ** with a slash, the current quadrant is taken.
- ** Otherwise the input is quadrant and sector coordi-
- ** nates of the target sector.
- **
- ** move -- identical to course, except that the move is performed.
- **
- ** score -- prints out the current score.
- **
- ** pheff -- "PHaser EFFectiveness" at a given distance. Tells
- ** you how much stuff you need to make it work.
- **
- ** warpcost -- Gives you the cost in time and units to move for
- ** a given distance under a given warp speed.
- **
- ** impcost -- Same for the impulse engines.
- **
- ** distresslist -- Gives a list of the currently known starsystems
- ** or starbases which are distressed, together with their
- ** quadrant coordinates.
- **
- ** If a command is terminated with a semicolon, you remain in
- ** the computer; otherwise, you escape immediately to the main
- ** command processor.
- */
-
- struct cvntab Cputab[] =
- {
- "ch", "art", (int (*)())1, 0,
- "t", "rajectory", (int (*)())2, 0,
- "c", "ourse", (int (*)())3, 0,
- "m", "ove", (int (*)())3, 1,
- "s", "core", (int (*)())4, 0,
- "p", "heff", (int (*)())5, 0,
- "w", "arpcost", (int (*)())6, 0,
- "i", "mpcost", (int (*)())7, 0,
- "d", "istresslist", (int (*)())8, 0,
- 0
- };
-
- computer()
- {
- int ix, iy;
- register int i, j;
- int numout;
- int tqx, tqy;
- struct cvntab *r;
- int cost;
- int course;
- double dist, time;
- double warpfact;
- struct quad *q;
- register struct event *e;
-
- if (check_out(COMPUTER))
- return;
- while (1)
- {
- r = getcodpar("\nRequest", Cputab);
- switch ((int)r->value)
- {
-
- case 1: /* star chart */
- printf("Computer record of galaxy for all long range sensor scans\n\n");
- printf(" ");
- /* print top header */
- for (i = 0; i < NQUADS; i++)
- printf("-%d- ", i);
- printf("\n");
- for (i = 0; i < NQUADS; i++)
- {
- printf("%d ", i);
- for (j = 0; j < NQUADS; j++)
- {
- if (i == Ship.quadx && j == Ship.quady)
- {
- printf("$$$ ");
- continue;
- }
- q = &Quad[i][j];
- /* 1000 or 1001 is special case */
- if (q->scanned >= 1000)
- if (q->scanned > 1000)
- printf(".1. ");
- else
- printf("/// ");
- else
- if (q->scanned < 0)
- printf("... ");
- else
- printf("%3d ", q->scanned);
- }
- printf("%d\n", i);
- }
- printf(" ");
- /* print bottom footer */
- for (i = 0; i < NQUADS; i++)
- printf("-%d- ", i);
- printf("\n");
- break;
-
- case 2: /* trajectory */
- if (check_out(SRSCAN))
- {
- break;
- }
- if (Etc.nkling <= 0)
- {
- printf("No Klingons in this quadrant\n");
- break;
- }
- /* for each Klingon, give the course & distance */
- for (i = 0; i < Etc.nkling; i++)
- {
- printf("Klingon at %d,%d", Etc.klingon[i].x, Etc.klingon[i].y);
- course = kalc(Ship.quadx, Ship.quady, Etc.klingon[i].x, Etc.klingon[i].y, &dist);
- prkalc(course, dist);
- }
- break;
-
- case 3: /* course calculation */
- if (readdelim('/'))
- {
- tqx = Ship.quadx;
- tqy = Ship.quady;
- }
- else
- {
- ix = getintpar("Quadrant");
- if (ix < 0 || ix >= NSECTS)
- break;
- iy = getintpar("q-y");
- if (iy < 0 || iy >= NSECTS)
- break;
- tqx = ix;
- tqy = iy;
- }
- ix = getintpar("Sector");
- if (ix < 0 || ix >= NSECTS)
- break;
- iy = getintpar("s-y");
- if (iy < 0 || iy >= NSECTS)
- break;
- course = kalc(tqx, tqy, ix, iy, &dist);
- if (r->value2)
- {
- warp(-1, course, dist);
- break;
- }
- printf("%d,%d/%d,%d to %d,%d/%d,%d",
- Ship.quadx, Ship.quady, Ship.sectx, Ship.secty, tqx, tqy, ix, iy);
- prkalc(course, dist);
- break;
-
- case 4: /* score */
- score();
- break;
-
- case 5: /* phaser effectiveness */
- dist = getfltpar("range");
- if (dist < 0.0)
- break;
- dist *= 10.0;
- cost = pow(0.90, dist) * 98.0 + 0.5;
- printf("Phasers are %d%% effective at that range\n", cost);
- break;
-
- case 6: /* warp cost (time/energy) */
- dist = getfltpar("distance");
- if (dist < 0.0)
- break;
- warpfact = getfltpar("warp factor");
- if (warpfact <= 0.0)
- warpfact = Ship.warp;
- cost = (dist + 0.05) * warpfact * warpfact * warpfact;
- time = Param.warptime * dist / (warpfact * warpfact);
- printf("Warp %.2f distance %.2f cost %.2f stardates %d (%d w/ shlds up) units\n",
- warpfact, dist, time, cost, cost + cost);
- break;
-
- case 7: /* impulse cost */
- dist = getfltpar("distance");
- if (dist < 0.0)
- break;
- cost = 20 + 100 * dist;
- time = dist / 0.095;
- printf("Distance %.2f cost %.2f stardates %d units\n",
- dist, time, cost);
- break;
-
- case 8: /* distresslist */
- j = 1;
- printf("\n");
- /* scan the event list */
- for (i = 0; i < MAXEVENTS; i++)
- {
- e = &Event[i];
- /* ignore hidden entries */
- if (e->evcode & E_HIDDEN)
- continue;
- switch (e->evcode & E_EVENT)
- {
-
- case E_KDESB:
- printf("Klingon is attacking starbase in quadrant %d,%d\n",
- e->x, e->y);
- j = 0;
- break;
-
- case E_ENSLV:
- case E_REPRO:
- printf("Starsystem %s in quadrant %d,%d is distressed\n",
- Systemname[e->systemname], e->x, e->y);
- j = 0;
- break;
- }
- }
- if (j)
- printf("No known distress calls are active\n");
- break;
-
- }
-
- /* skip to next semicolon or newline. Semicolon
- * means get new computer request; newline means
- * exit computer mode. */
- while ((i = cgetc(0)) != ';')
- {
- if (i == '\0')
- exit(1);
- if (i == '\n')
- {
- ungetc(i, stdin);
- return;
- }
- }
- }
- }
-
-
- /*
- ** Course Calculation
- **
- ** Computes and outputs the course and distance from position
- ** sqx,sqy/ssx,ssy to tqx,tqy/tsx,tsy.
- */
-
- kalc(tqx, tqy, tsx, tsy, dist)
- int tqx;
- int tqy;
- int tsx;
- int tsy;
- double *dist;
- {
- double dx, dy;
- double quadsize;
- double angle;
- register int course;
-
- /* normalize to quadrant distances */
- quadsize = NSECTS;
- dx = (Ship.quadx + Ship.sectx / quadsize) - (tqx + tsx / quadsize);
- dy = (tqy + tsy / quadsize) - (Ship.quady + Ship.secty / quadsize);
-
- /* get the angle */
- angle = atan2(dy, dx);
- /* make it 0 -> 2 pi */
- if (angle < 0.0)
- angle += 6.283185307;
- /* convert from radians to degrees */
- course = angle * 57.29577951 + 0.5;
- dx = dx * dx + dy * dy;
- *dist = sqrt(dx);
- return (course);
- }
-
-
- prkalc(course, dist)
- int course;
- double dist;
- {
- printf(": course %d dist %.3f\n", course, dist);
- }
-