1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. 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 * @(#)events.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/trek/events.c,v 1.4 1999/11/30 03:49:47 billf Exp $ 35 * $DragonFly: src/games/trek/events.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $ 36 */ 37 38 # include "getpar.h" 39 # include "trek.h" 40 41 /* 42 ** CAUSE TIME TO ELAPSE 43 ** 44 ** This routine does a hell of a lot. It elapses time, eats up 45 ** energy, regenerates energy, processes any events that occur, 46 ** and so on. 47 */ 48 49 void 50 events(int t_warp) 51 /* t_warp: set if called in a time warp */ 52 { 53 int i; 54 int j = 0; 55 struct kling *k; 56 double rtime; 57 double xdate; 58 double idate; 59 struct event *ev = NULL; 60 char *s; 61 int ix, iy; 62 struct quad *q; 63 struct event *e; 64 int evnum; 65 int restcancel; 66 67 /* if nothing happened, just allow for any Klingons killed */ 68 if (Move.time <= 0.0) 69 { 70 Now.time = Now.resource / Now.klings; 71 return; 72 } 73 74 /* indicate that the cloaking device is now working */ 75 Ship.cloakgood = 1; 76 77 /* idate is the initial date */ 78 idate = Now.date; 79 80 /* schedule attacks if resting too long */ 81 if (Move.time > 0.5 && Move.resting) 82 schedule(E_ATTACK, 0.5, 0, 0, 0); 83 84 /* scan the event list */ 85 while (1) 86 { 87 restcancel = 0; 88 evnum = -1; 89 /* xdate is the date of the current event */ 90 xdate = idate + Move.time; 91 92 /* find the first event that has happened */ 93 for (i = 0; i < MAXEVENTS; i++) 94 { 95 e = &Event[i]; 96 if (e->evcode == 0 || (e->evcode & E_GHOST)) 97 continue; 98 if (e->date < xdate) 99 { 100 xdate = e->date; 101 ev = e; 102 evnum = i; 103 } 104 } 105 e = ev; 106 107 /* find the time between events */ 108 rtime = xdate - Now.date; 109 110 /* decrement the magic "Federation Resources" pseudo-variable */ 111 Now.resource -= Now.klings * rtime; 112 /* and recompute the time left */ 113 Now.time = Now.resource / Now.klings; 114 115 /* move us up to the next date */ 116 Now.date = xdate; 117 118 /* check for out of time */ 119 if (Now.time <= 0.0) 120 lose(L_NOTIME); 121 # ifdef xTRACE 122 if (evnum >= 0 && Trace) 123 printf("xdate = %.2f, evcode %d params %d %d %d\n", 124 xdate, e->evcode, e->x, e->y, e->systemname); 125 # endif 126 127 /* if evnum < 0, no events occurred */ 128 if (evnum < 0) 129 break; 130 131 /* otherwise one did. Find out what it is */ 132 switch (e->evcode & E_EVENT) 133 { 134 135 case E_SNOVA: /* supernova */ 136 /* cause the supernova to happen */ 137 snova(-1, 0); 138 /* and schedule the next one */ 139 xresched(e, E_SNOVA, 1); 140 break; 141 142 case E_LRTB: /* long range tractor beam */ 143 /* schedule the next one */ 144 xresched(e, E_LRTB, Now.klings); 145 /* LRTB cannot occur if we are docked */ 146 if (Ship.cond != DOCKED) 147 { 148 /* pick a new quadrant */ 149 i = ranf(Now.klings) + 1; 150 for (ix = 0; ix < NQUADS; ix++) 151 { 152 for (iy = 0; iy < NQUADS; iy++) 153 { 154 q = &Quad[ix][iy]; 155 if (q->stars >= 0) 156 if ((i -= q->klings) <= 0) 157 break; 158 } 159 if (i <= 0) 160 break; 161 } 162 163 /* test for LRTB to same quadrant */ 164 if (Ship.quadx == ix && Ship.quady == iy) 165 break; 166 167 /* nope, dump him in the new quadrant */ 168 Ship.quadx = ix; 169 Ship.quady = iy; 170 printf("\n%s caught in long range tractor beam\n", Ship.shipname); 171 printf("*** Pulled to quadrant %d,%d\n", Ship.quadx, Ship.quady); 172 Ship.sectx = ranf(NSECTS); 173 Ship.secty = ranf(NSECTS); 174 initquad(0); 175 /* truncate the move time */ 176 Move.time = xdate - idate; 177 } 178 break; 179 180 case E_KATSB: /* Klingon attacks starbase */ 181 /* if out of bases, forget it */ 182 if (Now.bases <= 0) 183 { 184 unschedule(e); 185 break; 186 } 187 188 /* check for starbase and Klingons in same quadrant */ 189 for (i = 0; i < Now.bases; i++) 190 { 191 ix = Now.base[i].x; 192 iy = Now.base[i].y; 193 /* see if a Klingon exists in this quadrant */ 194 q = &Quad[ix][iy]; 195 if (q->klings <= 0) 196 continue; 197 198 /* see if already distressed */ 199 for (j = 0; j < MAXEVENTS; j++) 200 { 201 e = &Event[j]; 202 if ((e->evcode & E_EVENT) != E_KDESB) 203 continue; 204 if (e->x == ix && e->y == iy) 205 break; 206 } 207 if (j < MAXEVENTS) 208 continue; 209 210 /* got a potential attack */ 211 break; 212 } 213 e = ev; 214 if (i >= Now.bases) 215 { 216 /* not now; wait a while and see if some Klingons move in */ 217 reschedule(e, 0.5 + 3.0 * franf()); 218 break; 219 } 220 /* schedule a new attack, and a destruction of the base */ 221 xresched(e, E_KATSB, 1); 222 e = xsched(E_KDESB, 1, ix, iy, 0); 223 224 /* report it if we can */ 225 if (!damaged(SSRADIO)) 226 { 227 printf("\nUhura: Captain, we have recieved a distress signal\n"); 228 printf(" from the starbase in quadrant %d,%d.\n", 229 ix, iy); 230 restcancel++; 231 } 232 else 233 /* SSRADIO out, make it so we can't see the distress call */ 234 /* but it's still there!!! */ 235 e->evcode |= E_HIDDEN; 236 break; 237 238 case E_KDESB: /* Klingon destroys starbase */ 239 unschedule(e); 240 q = &Quad[e->x][e->y]; 241 /* if the base has mysteriously gone away, or if the Klingon 242 got tired and went home, ignore this event */ 243 if (q->bases <=0 || q->klings <= 0) 244 break; 245 /* are we in the same quadrant? */ 246 if (e->x == Ship.quadx && e->y == Ship.quady) 247 { 248 /* yep, kill one in this quadrant */ 249 printf("\nSpock: "); 250 killb(Ship.quadx, Ship.quady); 251 } 252 else 253 /* kill one in some other quadrant */ 254 killb(e->x, e->y); 255 break; 256 257 case E_ISSUE: /* issue a distress call */ 258 xresched(e, E_ISSUE, 1); 259 /* if we already have too many, throw this one away */ 260 if (Ship.distressed >= MAXDISTR) 261 break; 262 /* try a whole bunch of times to find something suitable */ 263 for (i = 0; i < 100; i++) 264 { 265 ix = ranf(NQUADS); 266 iy = ranf(NQUADS); 267 q = &Quad[ix][iy]; 268 /* need a quadrant which is not the current one, 269 which has some stars which are inhabited and 270 not already under attack, which is not 271 supernova'ed, and which has some Klingons in it */ 272 if (!((ix == Ship.quadx && iy == Ship.quady) || q->stars < 0 || 273 (q->qsystemname & Q_DISTRESSED) || 274 (q->qsystemname & Q_SYSTEM) == 0 || q->klings <= 0)) 275 break; 276 } 277 if (i >= 100) 278 /* can't seem to find one; ignore this call */ 279 break; 280 281 /* got one!! Schedule its enslavement */ 282 Ship.distressed++; 283 e = xsched(E_ENSLV, 1, ix, iy, q->qsystemname); 284 q->qsystemname = (e - Event) | Q_DISTRESSED; 285 286 /* tell the captain about it if we can */ 287 if (!damaged(SSRADIO)) 288 { 289 printf("\nUhura: Captain, starsystem %s in quadrant %d,%d is under attack\n", 290 Systemname[e->systemname], ix, iy); 291 restcancel++; 292 } 293 else 294 /* if we can't tell him, make it invisible */ 295 e->evcode |= E_HIDDEN; 296 break; 297 298 case E_ENSLV: /* starsystem is enslaved */ 299 unschedule(e); 300 /* see if current distress call still active */ 301 q = &Quad[e->x][e->y]; 302 if (q->klings <= 0) 303 { 304 /* no Klingons, clean up */ 305 /* restore the system name */ 306 q->qsystemname = e->systemname; 307 break; 308 } 309 310 /* play stork and schedule the first baby */ 311 e = schedule(E_REPRO, Param.eventdly[E_REPRO] * franf(), e->x, e->y, e->systemname); 312 313 /* report the disaster if we can */ 314 if (!damaged(SSRADIO)) 315 { 316 printf("\nUhura: We've lost contact with starsystem %s\n", 317 Systemname[e->systemname]); 318 printf(" in quadrant %d,%d.\n", 319 e->x, e->y); 320 } 321 else 322 e->evcode |= E_HIDDEN; 323 break; 324 325 case E_REPRO: /* Klingon reproduces */ 326 /* see if distress call is still active */ 327 q = &Quad[e->x][e->y]; 328 if (q->klings <= 0) 329 { 330 unschedule(e); 331 q->qsystemname = e->systemname; 332 break; 333 } 334 xresched(e, E_REPRO, 1); 335 /* reproduce one Klingon */ 336 ix = e->x; 337 iy = e->y; 338 if (Now.klings == 127) 339 break; /* full right now */ 340 if (q->klings >= MAXKLQUAD) 341 { 342 /* this quadrant not ok, pick an adjacent one */ 343 for (i = ix - 1; i <= ix + 1; i++) 344 { 345 if (i < 0 || i >= NQUADS) 346 continue; 347 for (j = iy - 1; j <= iy + 1; j++) 348 { 349 if (j < 0 || j >= NQUADS) 350 continue; 351 q = &Quad[i][j]; 352 /* check for this quad ok (not full & no snova) */ 353 if (q->klings >= MAXKLQUAD || q->stars < 0) 354 continue; 355 break; 356 } 357 if (j <= iy + 1) 358 break; 359 } 360 if (j > iy + 1) 361 /* cannot create another yet */ 362 break; 363 ix = i; 364 iy = j; 365 } 366 /* deliver the child */ 367 q->klings++; 368 Now.klings++; 369 if (ix == Ship.quadx && iy == Ship.quady) 370 { 371 /* we must position Klingon */ 372 sector(&ix, &iy); 373 Sect[ix][iy] = KLINGON; 374 k = &Etc.klingon[Etc.nkling++]; 375 k->x = ix; 376 k->y = iy; 377 k->power = Param.klingpwr; 378 k->srndreq = 0; 379 compkldist(Etc.klingon[0].dist == Etc.klingon[0].avgdist ? 0 : 1); 380 } 381 382 /* recompute time left */ 383 Now.time = Now.resource / Now.klings; 384 break; 385 386 case E_SNAP: /* take a snapshot of the galaxy */ 387 xresched(e, E_SNAP, 1); 388 s = Etc.snapshot; 389 s = bmove(Quad, s, sizeof (Quad)); 390 s = bmove(Event, s, sizeof (Event)); 391 s = bmove(&Now, s, sizeof (Now)); 392 Game.snap = 1; 393 break; 394 395 case E_ATTACK: /* Klingons attack during rest period */ 396 if (!Move.resting) 397 { 398 unschedule(e); 399 break; 400 } 401 attack(1); 402 reschedule(e, 0.5); 403 break; 404 405 case E_FIXDV: 406 i = e->systemname; 407 unschedule(e); 408 409 /* de-damage the device */ 410 printf("%s reports repair work on the %s finished.\n", 411 Device[i].person, Device[i].name); 412 413 /* handle special processing upon fix */ 414 switch (i) 415 { 416 417 case LIFESUP: 418 Ship.reserves = Param.reserves; 419 break; 420 421 case SINS: 422 if (Ship.cond == DOCKED) 423 break; 424 printf("Spock has tried to recalibrate your Space Internal Navigation System,\n"); 425 printf(" but he has no standard base to calibrate to. Suggest you get\n"); 426 printf(" to a starbase immediately so that you can properly recalibrate.\n"); 427 Ship.sinsbad = 1; 428 break; 429 430 case SSRADIO: 431 restcancel = dumpssradio(); 432 break; 433 } 434 break; 435 436 default: 437 break; 438 } 439 440 if (restcancel && Move.resting && getynpar("Spock: Shall we cancel our rest period")) 441 Move.time = xdate - idate; 442 443 } 444 445 /* unschedule an attack during a rest period */ 446 if ((e = Now.eventptr[E_ATTACK])) 447 unschedule(e); 448 449 if (!t_warp) 450 { 451 /* eat up energy if cloaked */ 452 if (Ship.cloaked) 453 Ship.energy -= Param.cloakenergy * Move.time; 454 455 /* regenerate resources */ 456 rtime = 1.0 - exp(-Param.regenfac * Move.time); 457 Ship.shield += (Param.shield - Ship.shield) * rtime; 458 Ship.energy += (Param.energy - Ship.energy) * rtime; 459 460 /* decrement life support reserves */ 461 if (damaged(LIFESUP) && Ship.cond != DOCKED) 462 Ship.reserves -= Move.time; 463 } 464 return; 465 } 466