1 /* $NetBSD: computer.c,v 1.16 2009/08/12 08:54:54 dholland Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)computer.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 __RCSID("$NetBSD: computer.c,v 1.16 2009/08/12 08:54:54 dholland Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <math.h> 44 #include "trek.h" 45 #include "getpar.h" 46 47 /* 48 ** On-Board Computer 49 ** 50 ** A computer request is fetched from the captain. The requests 51 ** are: 52 ** 53 ** chart -- print a star chart of the known galaxy. This includes 54 ** every quadrant that has ever had a long range or 55 ** a short range scan done of it, plus the location of 56 ** all starbases. This is of course updated by any sub- 57 ** space radio broadcasts (unless the radio is out). 58 ** The format is the same as that of a long range scan 59 ** except that ".1." indicates that a starbase exists 60 ** but we know nothing else. 61 ** 62 ** trajectory -- gives the course and distance to every know 63 ** Klingon in the quadrant. Obviously this fails if the 64 ** short range scanners are out. 65 ** 66 ** course -- gives a course computation from whereever you are 67 ** to any specified location. If the course begins 68 ** with a slash, the current quadrant is taken. 69 ** Otherwise the input is quadrant and sector coordi- 70 ** nates of the target sector. 71 ** 72 ** move -- identical to course, except that the move is performed. 73 ** 74 ** score -- prints out the current score. 75 ** 76 ** pheff -- "PHaser EFFectiveness" at a given distance. Tells 77 ** you how much stuff you need to make it work. 78 ** 79 ** warpcost -- Gives you the cost in time and units to move for 80 ** a given distance under a given warp speed. 81 ** 82 ** impcost -- Same for the impulse engines. 83 ** 84 ** distresslist -- Gives a list of the currently known starsystems 85 ** or starbases which are distressed, together with their 86 ** quadrant coordinates. 87 ** 88 ** If a command is terminated with a semicolon, you remain in 89 ** the computer; otherwise, you escape immediately to the main 90 ** command processor. 91 */ 92 93 static struct cvntab Cputab[] = { 94 { "ch", "art", (cmdfun)1, 0 }, 95 { "t", "rajectory", (cmdfun)2, 0 }, 96 { "c", "ourse", (cmdfun)3, 0 }, 97 { "m", "ove", (cmdfun)3, 1 }, 98 { "s", "core", (cmdfun)4, 0 }, 99 { "p", "heff", (cmdfun)5, 0 }, 100 { "w", "arpcost", (cmdfun)6, 0 }, 101 { "i", "mpcost", (cmdfun)7, 0 }, 102 { "d", "istresslist", (cmdfun)8, 0 }, 103 { NULL, NULL, NULL, 0 } 104 }; 105 106 static int kalc(int, int, int, int, double *); 107 static void prkalc(int, double); 108 109 /*ARGSUSED*/ 110 void 111 computer(int v __unused) 112 { 113 int ix, iy; 114 int i, j; 115 int tqx, tqy; 116 const struct cvntab *r; 117 int cost; 118 int course; 119 double dist, time; 120 double warpfact; 121 struct quad *q; 122 struct event *e; 123 124 if (check_out(COMPUTER)) 125 return; 126 while (1) { 127 r = getcodpar("\nRequest", Cputab); 128 switch ((long)r->value) { 129 130 case 1: /* star chart */ 131 printf("Computer record of galaxy for all long range " 132 "sensor scans\n\n"); 133 printf(" "); 134 /* print top header */ 135 for (i = 0; i < NQUADS; i++) 136 printf("-%d- ", i); 137 printf("\n"); 138 for (i = 0; i < NQUADS; i++) { 139 printf("%d ", i); 140 for (j = 0; j < NQUADS; j++) { 141 if (i == Ship.quadx && 142 j == Ship.quady) { 143 printf("$$$ "); 144 continue; 145 } 146 q = &Quad[i][j]; 147 /* 1000 or 1001 is special case */ 148 if (q->scanned >= 1000) 149 if (q->scanned > 1000) 150 printf(".1. "); 151 else 152 printf("/// "); 153 else 154 if (q->scanned < 0) 155 printf("... "); 156 else 157 printf("%3d ", 158 q->scanned); 159 } 160 printf("%d\n", i); 161 } 162 printf(" "); 163 /* print bottom footer */ 164 for (i = 0; i < NQUADS; i++) 165 printf("-%d- ", i); 166 printf("\n"); 167 break; 168 169 case 2: /* trajectory */ 170 if (check_out(SRSCAN)) { 171 break; 172 } 173 if (Etc.nkling <= 0) { 174 printf("No Klingons in this quadrant\n"); 175 break; 176 } 177 /* for each Klingon, give the course & distance */ 178 for (i = 0; i < Etc.nkling; i++) { 179 printf("Klingon at %d,%d", 180 Etc.klingon[i].x, Etc.klingon[i].y); 181 course = kalc(Ship.quadx, Ship.quady, 182 Etc.klingon[i].x, 183 Etc.klingon[i].y, &dist); 184 prkalc(course, dist); 185 } 186 break; 187 188 case 3: /* course calculation */ 189 if (readdelim('/')) { 190 tqx = Ship.quadx; 191 tqy = Ship.quady; 192 } else { 193 ix = getintpar("Quadrant"); 194 if (ix < 0 || ix >= NSECTS) 195 break; 196 iy = getintpar("q-y"); 197 if (iy < 0 || iy >= NSECTS) 198 break; 199 tqx = ix; 200 tqy = iy; 201 } 202 ix = getintpar("Sector"); 203 if (ix < 0 || ix >= NSECTS) 204 break; 205 iy = getintpar("s-y"); 206 if (iy < 0 || iy >= NSECTS) 207 break; 208 course = kalc(tqx, tqy, ix, iy, &dist); 209 if (r->value2) { 210 warp(-1, course, dist); 211 break; 212 } 213 printf("%d,%d/%d,%d to %d,%d/%d,%d", 214 Ship.quadx, Ship.quady, Ship.sectx, Ship.secty, 215 tqx, tqy, ix, iy); 216 prkalc(course, dist); 217 break; 218 219 case 4: /* score */ 220 score(); 221 break; 222 223 case 5: /* phaser effectiveness */ 224 dist = getfltpar("range"); 225 if (dist < 0.0) 226 break; 227 dist *= 10.0; 228 cost = pow(0.90, dist) * 98.0 + 0.5; 229 printf("Phasers are %d%% effective at that range\n", 230 cost); 231 break; 232 233 case 6: /* warp cost (time/energy) */ 234 dist = getfltpar("distance"); 235 if (dist < 0.0) 236 break; 237 warpfact = getfltpar("warp factor"); 238 if (warpfact <= 0.0) 239 warpfact = Ship.warp; 240 cost = (dist + 0.05) * warpfact * warpfact * warpfact; 241 time = Param.warptime * dist / (warpfact * warpfact); 242 printf("Warp %.2f distance %.2f cost %.2f " 243 "stardates %d (%d w/ shlds up) units\n", 244 warpfact, dist, time, cost, cost + cost); 245 break; 246 247 case 7: /* impulse cost */ 248 dist = getfltpar("distance"); 249 if (dist < 0.0) 250 break; 251 cost = 20 + 100 * dist; 252 time = dist / 0.095; 253 printf("Distance %.2f cost %.2f stardates %d units\n", 254 dist, time, cost); 255 break; 256 257 case 8: /* distresslist */ 258 j = 1; 259 printf("\n"); 260 /* scan the event list */ 261 for (i = 0; i < MAXEVENTS; i++) { 262 e = &Event[i]; 263 /* ignore hidden entries */ 264 if (e->evcode & E_HIDDEN) 265 continue; 266 switch (e->evcode & E_EVENT) { 267 268 case E_KDESB: 269 printf("Klingon is attacking starbase " 270 "in quadrant %d,%d\n", 271 e->x, e->y); 272 j = 0; 273 break; 274 275 case E_ENSLV: 276 case E_REPRO: 277 printf("Starsystem %s in quadrant " 278 "%d,%d is distressed\n", 279 Systemname[e->systemname], 280 e->x, e->y); 281 j = 0; 282 break; 283 } 284 } 285 if (j) 286 printf("No known distress calls are active\n"); 287 break; 288 289 } 290 291 /* 292 * Skip to next semicolon or newline. Semicolon 293 * means get new computer request; newline means 294 * exit computer mode. 295 */ 296 while ((i = getchar()) != ';') { 297 if (i == EOF) 298 exit(1); 299 if (i == '\n') { 300 ungetc(i, stdin); 301 return; 302 } 303 } 304 } 305 } 306 307 308 /* 309 ** Course Calculation 310 ** 311 ** Computes and outputs the course and distance from position 312 ** sqx,sqy/ssx,ssy to tqx,tqy/tsx,tsy. 313 */ 314 315 static int 316 kalc(int tqx, int tqy, int tsx, int tsy, double *dist) 317 { 318 double dx, dy; 319 double quadsize; 320 double angle; 321 int course; 322 323 /* normalize to quadrant distances */ 324 quadsize = NSECTS; 325 dx = (Ship.quadx + Ship.sectx / quadsize) - (tqx + tsx / quadsize); 326 dy = (tqy + tsy / quadsize) - (Ship.quady + Ship.secty / quadsize); 327 328 /* get the angle */ 329 angle = atan2(dy, dx); 330 /* make it 0 -> 2 pi */ 331 if (angle < 0.0) 332 angle += 6.283185307; 333 /* convert from radians to degrees */ 334 course = angle * 57.29577951 + 0.5; 335 dx = dx * dx + dy * dy; 336 *dist = sqrt(dx); 337 return (course); 338 } 339 340 static void 341 prkalc(int course, double dist) 342 { 343 printf(": course %d dist %.3f\n", course, dist); 344 } 345
Indexes created Mon Sep 22 10:09:38 GMT 2025