src/events.c

   1 /*
   2  * events.c -- event-queue handling
   3  *
   4  * This isn't a real event queue a la BSD Trek yet -- you can only have one
   5  * event of each type active at any given time.  Mostly these means we can
   6  * only have one FDISTR/FENSLV/FREPRO sequence going at any given time;
   7  * BSD Trek, from which we swiped the idea, can have up to 5.
   8  */
   9 #include "sst.h"
  10 #include <math.h>
  11
  12 event *unschedule(int evtype)
  13 /* remove an event from the schedule */
  14 {
  15     game.future[evtype].date = FOREVER;
  16     return &game.future[evtype];
  17 }
  18
  19 int is_scheduled(int evtype)
  20 /* is an event of specified type scheduled */
  21 {
  22     return game.future[evtype].date != FOREVER;
  23 }
  24
  25 extern double scheduled(int evtype)
  26 /* when will this event happen? */
  27 {
  28     return game.future[evtype].date;
  29 }
  30
  31 event *schedule(int evtype, double offset)
  32 /* schedule an event of specified type */
  33 {
  34     game.future[evtype].date = game.state.date + offset;
  35     return &game.future[evtype];
  36 }
  37
  38 void postpone(int evtype, double offset)
  39 /* poistpone a scheduled event */
  40 {
  41     game.future[evtype].date += offset;
  42 }
  43
  44 static bool cancelrest(void)
  45 /* rest period is interrupted by event */
  46 {
  47     if (game.resting) {
  48         skip(1);
  49         proutn(_("Mr. Spock-  \"Captain, shall we cancel the rest period?\""));
  50         if (ja() == true) {
  51             game.resting = false;
  52             game.optime = 0.0;
  53             return true;
  54         }
  55     }
  56
  57     return false;
  58 }
  59
  60 void events(void)
  61 /* run through the event queue looking for things to do */
  62 {
  63     int evcode, i=0, j, k, l;
  64     double fintim = game.state.date + game.optime, datemin, xtime, repair, yank=0;
  65     bool radio_was_broken, ictbeam = false, istract = false;
  66     struct quadrant *pdest, *q;
  67     coord w, hold;
  68     event *ev, *ev2;
  69
  70     if (idebug) {
  71         prout("=== EVENTS from %.2f to %.2f:", game.state.date, fintim);
  72         for (i = 1; i < NEVENTS; i++) {
  73             switch (i) {
  74             case FSNOVA:  proutn("=== Supernova       "); break;
  75             case FTBEAM:  proutn("=== T Beam          "); break;
  76             case FSNAP:   proutn("=== Snapshot        "); break;
  77             case FBATTAK: proutn("=== Base Attack     "); break;
  78             case FCDBAS:  proutn("=== Base Destroy    "); break;
  79             case FSCMOVE: proutn("=== SC Move         "); break;
  80             case FSCDBAS: proutn("=== SC Base Destroy "); break;
  81             case FDSPROB: proutn("=== Probe Move      "); break;
  82             case FDISTR:  proutn("=== Distress Call   "); break;
  83             case FENSLV:  proutn("=== Enlavement      "); break;
  84             case FREPRO:  proutn("=== Klingon Build   "); break;
  85             }
  86             if (is_scheduled(i))
  87                 prout("%.2f", scheduled(i));
  88             else
  89                 prout("never");
  90
  91         }
  92     }
  93
  94     radio_was_broken = damaged(DRADIO);
  95
  96     hold.x = hold.y = 0;
  97     for (;;) {
  98         /* Select earliest extraneous event, evcode==0 if no events */
  99         evcode = FSPY;
 100         if (game.alldone)
 101             return;
 102         datemin = fintim;
 103         for (l = 1; l < NEVENTS; l++)
 104             if (game.future[l].date < datemin) {
 105                 evcode = l;
 106                 if (idebug)
 107                     prout("== Event %d fires", evcode);
 108                 datemin = game.future[l].date;
 109             }
 110         xtime = datemin-game.state.date;
 111         game.state.date = datemin;
 112         /* Decrement Federation resources and recompute remaining time */
 113         game.state.remres -= (game.state.remkl+4*game.state.remcom)*xtime;
 114         game.state.remtime = game.state.remkl + game.state.remcom > 0 ?
 115                 game.state.remres/(game.state.remkl + 4*game.state.remcom) : 99;
 116         if (game.state.remtime <=0) {
 117             finish(FDEPLETE);
 118             return;
 119         }
 120         /* Any crew left alive? */
 121         if (game.state.crew <=0) {
 122             finish(FCREW);
 123             return;
 124         }
 125         /* Is life support adequate? */
 126         if (damaged(DLIFSUP) && game.condition != docked) {
 127             if (game.lsupres < xtime && game.damage[DLIFSUP] > game.lsupres) {
 128                 finish(FLIFESUP);
 129                 return;
 130             }
 131             game.lsupres -= xtime;
 132             if (game.damage[DLIFSUP] <= xtime)
 133                 game.lsupres = game.inlsr;
 134         }
 135         /* Fix devices */
 136         repair = xtime;
 137         if (game.condition == docked)
 138             repair /= game.docfac;
 139         /* Don't fix Deathray here */
 140         for (l=0; l<NDEVICES; l++)
 141             if (game.damage[l] > 0.0 && l != DDRAY)
 142                 game.damage[l] -= (game.damage[l]-repair > 0.0 ? repair : game.damage[l]);
 143         /* If radio repaired, update star chart and attack reports */
 144         if (radio_was_broken && !damaged(DRADIO)) {
 145             prout(_("Lt. Uhura- \"Captain, the sub-space radio is working and"));
 146             prout(_("   surveillance reports are coming in."));
 147             skip(1);
 148             if (!game.iseenit) {
 149                 attackreport(false);
 150                 game.iseenit = true;
 151             }
 152             rechart();
 153             prout(_("   The star chart is now up to date.\""));
 154             skip(1);
 155         }
 156         /* Cause extraneous event EVCODE to occur */
 157         game.optime -= xtime;
 158         switch (evcode) {
 159         case FSNOVA: /* Supernova */
 160             announce();
 161             supernova(false, NULL);
 162             schedule(FSNOVA, expran(0.5*game.intime));
 163             if (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova)
 164                 return;
 165             break;
 166         case FSPY: /* Check with spy to see if S.C. should tractor beam */
 167             if (game.state.nscrem == 0 ||
 168                 ictbeam || istract ||
 169                 game.condition==docked || game.isatb==1 || game.iscate) return;
 170             if (game.ientesc ||
 171                 (game.energy < 2000 && game.torps < 4 && game.shield < 1250) ||
 172                 (damaged(DPHASER) && (damaged(DPHOTON) || game.torps < 4)) ||
 173                 (damaged(DSHIELD) &&
 174                  (game.energy < 2500 || damaged(DPHASER)) &&
 175                  (game.torps < 5 || damaged(DPHOTON)))) {
 176                 /* Tractor-beam her! */
 177                 istract = true;
 178                 yank = distance(game.state.kscmdr, game.quadrant);
 179                 /********* fall through to FTBEAM code ***********/
 180             }
 181             else
 182                 return;
 183         case FTBEAM: /* Tractor beam */
 184             if (evcode==FTBEAM) {
 185                 if (game.state.remcom == 0) {
 186                     unschedule(FTBEAM);
 187                     break;
 188                 }
 189                 i = Rand()*game.state.remcom+1.0;
 190                 yank = square(game.state.kcmdr[i].x-game.quadrant.x) + square(game.state.kcmdr[i].y-game.quadrant.y);
 191                 if (istract || game.condition == docked || yank == 0) {
 192                     /* Drats! Have to reschedule */
 193                     schedule(FTBEAM,
 194                              game.optime + expran(1.5*game.intime/game.state.remcom));
 195                     break;
 196                 }
 197             }
 198             /* tractor beaming cases merge here */
 199             yank = sqrt(yank);
 200             announce();
 201             game.optime = (10.0/(7.5*7.5))*yank; /* 7.5 is yank rate (warp 7.5) */
 202             ictbeam = true;
 203             skip(1);
 204             proutn("***");
 205             crmshp();
 206             prout(_(" caught in long range tractor beam--"));
 207             /* If Kirk & Co. screwing around on planet, handle */
 208             atover(true); /* atover(true) is Grab */
 209             if (game.alldone)
 210                 return;
 211             if (game.icraft) { /* Caught in Galileo? */
 212                 finish(FSTRACTOR);
 213                 return;
 214             }
 215             /* Check to see if shuttle is aboard */
 216             if (game.iscraft == offship) {
 217                 skip(1);
 218                 if (Rand() > 0.5) {
 219                     prout(_("Galileo, left on the planet surface, is captured"));
 220                     prout(_("by aliens and made into a flying McDonald's."));
 221                     game.damage[DSHUTTL] = -10;
 222                     game.iscraft = removed;
 223                 }
 224                 else {
 225                     prout(_("Galileo, left on the planet surface, is well hidden."));
 226                 }
 227             }
 228             if (evcode==0)
 229                 game.quadrant = game.state.kscmdr;
 230             else
 231                 game.quadrant = game.state.kcmdr[i];
 232             game.sector = randplace(QUADSIZE);
 233             crmshp();
 234             proutn(_(" is pulled to "));
 235             proutn(cramlc(quadrant, game.quadrant));
 236             proutn(", ");
 237             prout(cramlc(sector, game.sector));
 238             if (game.resting) {
 239                 prout(_("(Remainder of rest/repair period cancelled.)"));
 240                 game.resting = false;
 241             }
 242             if (!game.shldup) {
 243                 if (!damaged(DSHIELD) && game.shield > 0) {
 244                     doshield(true); /* raise shields */
 245                     game.shldchg=false;
 246                 }
 247                 else
 248                     prout(_("(Shields not currently useable.)"));
 249             }
 250             newqad(false);
 251             /* Adjust finish time to time of tractor beaming */
 252             fintim = game.state.date+game.optime;
 253             attack(false);
 254             if (game.state.remcom <= 0)
 255                 unschedule(FTBEAM);
 256             else
 257                 schedule(FTBEAM, game.optime+expran(1.5*game.intime/game.state.remcom));
 258             break;
 259         case FSNAP: /* Snapshot of the universe (for time warp) */
 260             game.snapsht = game.state;
 261             game.state.snap = true;
 262             schedule(FSNAP, expran(0.5 * game.intime));
 263             break;
 264         case FBATTAK: /* Commander attacks starbase */
 265             if (game.state.remcom==0 || game.state.rembase==0) {
 266                 /* no can do */
 267                 unschedule(FBATTAK);
 268                 unschedule(FCDBAS);
 269                 break;
 270             }
 271             i = 0;
 272             for (j = 1; j <= game.state.rembase; j++) {
 273                 for (k = 1; k <= game.state.remcom; k++)
 274                     if (same(game.state.baseq[j], game.state.kcmdr[k]) &&
 275                         !same(game.state.baseq[j], game.quadrant) &&
 276                         !same(game.state.baseq[j], game.state.kscmdr)) {
 277                         i = 1;
 278                         break;
 279                     }
 280                 if (i == 1)
 281                     break;
 282             }
 283             if (j>game.state.rembase) {
 284                 /* no match found -- try later */
 285                 schedule(FBATTAK, expran(0.3*game.intime));
 286                 unschedule(FCDBAS);
 287                 break;
 288             }
 289             /* commander + starbase combination found -- launch attack */
 290             game.battle = game.state.baseq[j];
 291             schedule(FCDBAS, 1.0+3.0*Rand());
 292             if (game.isatb) /* extra time if SC already attacking */
 293                 postpone(FCDBAS, scheduled(FSCDBAS)-game.state.date);
 294             game.future[FBATTAK].date = game.future[FCDBAS].date + expran(0.3*game.intime);
 295             game.iseenit = false;
 296             if (!damaged(DRADIO) && game.condition != docked)
 297                 break; /* No warning :-( */
 298             game.iseenit = true;
 299             announce();
 300             skip(1);
 301             proutn(_("Lt. Uhura-  \"Captain, the starbase in "));
 302             prout(cramlc(quadrant, game.battle));
 303             prout(_("   reports that it is under attack and that it can"));
 304             proutn(_("   hold out only until stardate %d"),
 305                    (int)scheduled(FCDBAS));
 306             prout(".\"");
 307             if (cancelrest())
 308                 return;
 309             break;
 310         case FSCDBAS: /* Supercommander destroys base */
 311             unschedule(FSCDBAS);
 312             game.isatb = 2;
 313             if (!game.state.galaxy[game.state.kscmdr.x][game.state.kscmdr.y].starbase)
 314                 break; /* WAS RETURN! */
 315             hold = game.battle;
 316             game.battle = game.state.kscmdr;
 317             /* FALL THROUGH */
 318         case FCDBAS: /* Commander succeeds in destroying base */
 319             if (evcode==FCDBAS) {
 320                 unschedule(FCDBAS);
 321                 /* find the lucky pair */
 322                 for (i = 1; i <= game.state.remcom; i++)
 323                     if (same(game.state.kcmdr[i], game.battle))
 324                         break;
 325                 if (i > game.state.remcom || game.state.rembase == 0 ||
 326                     !game.state.galaxy[game.battle.x][game.battle.y].starbase) {
 327                     /* No action to take after all */
 328                     invalidate(game.battle);
 329                     break;
 330                 }
 331             }
 332             /* Code merges here for any commander destroying base */
 333             /* Not perfect, but will have to do */
 334             /* Handle case where base is in same quadrant as starship */
 335             if (same(game.battle, game.quadrant)) {
 336                 game.state.chart[game.battle.x][game.battle.y].starbase = false;
 337                 game.quad[game.base.x][game.base.y] = IHDOT;
 338                 game.base.x=game.base.y=0;
 339                 newcnd();
 340                 skip(1);
 341                 prout(_("Spock-  \"Captain, I believe the starbase has been destroyed.\""));
 342             }
 343             else if (game.state.rembase != 1 &&
 344                      (!damaged(DRADIO) || game.condition == docked)) {
 345                 /* Get word via subspace radio */
 346                 announce();
 347                 skip(1);
 348                 prout(_("Lt. Uhura-  \"Captain, Starfleet Command reports that"));
 349                 proutn(_("   the starbase in "));
 350                 proutn(cramlc(quadrant, game.battle));
 351                 prout(_(" has been destroyed by"));
 352                 if (game.isatb == 2)
 353                     prout(_("the Klingon Super-Commander"));
 354                 else
 355                     prout(_("a Klingon Commander"));
 356                 game.state.chart[game.battle.x][game.battle.y].starbase = false;
 357             }
 358             /* Remove Starbase from galaxy */
 359             game.state.galaxy[game.battle.x][game.battle.y].starbase = false;
 360             for (i = 1; i <= game.state.rembase; i++)
 361                 if (same(game.state.baseq[i], game.battle))
 362                     game.state.baseq[i] = game.state.baseq[game.state.rembase];
 363             game.state.rembase--;
 364             if (game.isatb == 2) {
 365                 /* reinstate a commander's base attack */
 366                 game.battle = hold;
 367                 game.isatb = 0;
 368             }
 369             else
 370                 invalidate(game.battle);
 371             break;
 372         case FSCMOVE: /* Supercommander moves */
 373             schedule(FSCMOVE, 0.2777);
 374             if (!game.ientesc && !istract && game.isatb != 1 &&
 375                         (!game.iscate || !game.justin))
 376                 supercommander();
 377             break;
 378         case FDSPROB: /* Move deep space probe */
 379             schedule(FDSPROB, 0.01);
 380             game.probex += game.probeinx;
 381             game.probey += game.probeiny;
 382             i = (int)(game.probex/QUADSIZE +0.05);
 383             j = (int)(game.probey/QUADSIZE + 0.05);
 384             if (game.probec.x != i || game.probec.y != j) {
 385                 game.probec.x = i;
 386                 game.probec.y = j;
 387                 if (!VALID_QUADRANT(i, j) ||
 388                     game.state.galaxy[game.probec.x][game.probec.y].supernova) {
 389                     // Left galaxy or ran into supernova
 390                     if (!damaged(DRADIO) || game.condition == docked) {
 391                         announce();
 392                         skip(1);
 393                         proutn(_("Lt. Uhura-  \"The deep space probe "));
 394                         if (!VALID_QUADRANT(j, i))
 395                             proutn(_("has left the galaxy"));
 396                         else
 397                             proutn(_("is no longer transmitting"));
 398                         prout(".\"");
 399                     }
 400                     unschedule(FDSPROB);
 401                     break;
 402                 }
 403                 if (!damaged(DRADIO) || game.condition == docked) {
 404                     announce();
 405                     skip(1);
 406                     proutn(_("Lt. Uhura-  \"The deep space probe is now in "));
 407                     proutn(cramlc(quadrant, game.probec));
 408                     prout(".\"");
 409                 }
 410             }
 411             pdest = &game.state.galaxy[game.probec.x][game.probec.y];
 412             /* Update star chart if Radio is working or have access to
 413                radio. */
 414             if (!damaged(DRADIO) || game.condition == docked) {
 415                 struct page *chp = &game.state.chart[game.probec.x][game.probec.y];
 416
 417                 chp->klingons = pdest->klingons;
 418                 chp->starbase = pdest->starbase;
 419                 chp->stars = pdest->stars;
 420                 pdest->charted = true;
 421             }
 422             game.proben--; // One less to travel
 423             if (game.proben == 0 && game.isarmed && pdest->stars) {
 424                 /* lets blow the sucker! */
 425                 supernova(true, &game.probec);
 426                 unschedule(FDSPROB);
 427                 if (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova)
 428                     return;
 429             }
 430             break;
 431         case FDISTR: /* inhabited system issues distress call */
 432             unschedule(FDISTR);
 433             /* try a whole bunch of times to find something suitable */
 434             i = 100;
 435             do {
 436                 // need a quadrant which is not the current one,
 437                 // which has some stars which are inhabited and
 438                 // not already under attack, which is not
 439                 // supernova'ed, and which has some Klingons in it
 440                 w = randplace(GALSIZE);
 441                 q = &game.state.galaxy[w.x][w.y];
 442             } while (--i &&
 443                      (same(game.quadrant, w) || q->planet == NOPLANET ||
 444                       game.state.planets[q->planet].inhabited == UNINHABITED ||
 445                       q->supernova || q->status!=secure || q->klingons<=0));
 446             if (i == 0) {
 447                 /* can't seem to find one; ignore this call */
 448                 if (idebug)
 449                     prout("=== Couldn't find location for distress event.");
 450                 break;
 451             }
 452
 453             /* got one!!  Schedule its enslavement */
 454             ev = schedule(FENSLV, expran(game.intime));
 455             ev->quadrant = w;
 456             q->status = distressed;
 457
 458             /* tell the captain about it if we can */
 459             if (!damaged(DRADIO) || game.condition == docked)
 460             {
 461                 prout(_("Uhura- Captain, %s in %s reports it is under attack"),
 462                       systnames[q->planet], cramlc(quadrant, w));
 463                 prout(_("by a Klingon invasion fleet."));
 464                 if (cancelrest())
 465                     return;
 466             }
 467             break;
 468         case FENSLV:            /* starsystem is enslaved */
 469             ev = unschedule(FENSLV);
 470             /* see if current distress call still active */
 471             q = &game.state.galaxy[ev->quadrant.x][ev->quadrant.y];
 472             if (q->klingons <= 0) {
 473                 q->status = secure;
 474                 break;
 475             }
 476             q->status = enslaved;
 477
 478             /* play stork and schedule the first baby */
 479             ev2 = schedule(FREPRO, expran(2.0 * game.intime));
 480             ev2->quadrant = ev->quadrant;
 481
 482             /* report the disaster if we can */
 483             if (!damaged(DRADIO) || game.condition == docked)
 484             {
 485                 prout(_("Uhura- We've lost contact with starsystem %s"),
 486                       systnames[q->planet]);
 487                 prout(_("in %s.\n"), cramlc(quadrant, ev->quadrant));
 488             }
 489             break;
 490         case FREPRO:            /* Klingon reproduces */
 491             // If we ever switch to a real event queue, we'll need to
 492             // explicitly retrieve and restore the x and y.
 493             ev = schedule(FREPRO, expran(1.0 * game.intime));
 494             /* see if current distress call still active */
 495             q = &game.state.galaxy[ev->quadrant.x][ev->quadrant.y];
 496             if (q->klingons <= 0) {
 497                 q->status = secure;
 498                 break;
 499             }
 500             if (game.state.remkl >=MAXKLGAME)
 501                 break;          /* full right now */
 502             /* reproduce one Klingon */
 503             w = ev->quadrant;
 504             if (game.klhere >= MAXKLQUAD) {
 505                 /* this quadrant not ok, pick an adjacent one */
 506                 for (i = w.x - 1; i <= w.x + 1; i++)
 507                 {
 508                     for (j = w.y - 1; j <= w.y + 1; j++)
 509                     {
 510                         if (!VALID_QUADRANT(i, j))
 511                             continue;
 512                         q = &game.state.galaxy[w.x][w.y];
 513                         /* check for this quad ok (not full & no snova) */
 514                         if (q->klingons >= MAXKLQUAD || q->supernova)
 515                             continue;
 516                         goto foundit;
 517                     }
 518                 }
 519                 break;  /* search for eligible quadrant failed */
 520             foundit:
 521                 w.x = i;
 522                 w.y = j;
 523             }
 524
 525             /* deliver the child */
 526             game.state.remkl++;
 527             q->klingons++;
 528             if (same(game.quadrant, w))
 529                 newkling(++game.klhere);
 530
 531             /* recompute time left */
 532             game.state.remtime = game.state.remkl + game.state.remcom > 0 ?
 533                     game.state.remres/(game.state.remkl + 4*game.state.remcom) : 99;
 534             /* report the disaster if we can */
 535             if (!damaged(DRADIO) || game.condition == docked)
 536             {
 537                 if (same(game.quadrant, w)) {
 538                     prout(_("Spock- sensors indicate the Klingons have"));
 539                     prout(_("launched a warship from %s."), systnames[q->planet]);
 540                 } else {
 541                     prout(_("Uhura- Starfleet reports increased Klingon activity"));
 542                     if (q->planet != NOPLANET)
 543                         proutn(_("near %s"), systnames[q->planet]);
 544                     prout(_("in %s.\n"), cramlc(quadrant, w));
 545                 }
 546             }
 547             break;
 548         }
 549     }
 550 }
 551
 552
 553 void wait(void)
 554 /* wait on events */
 555 {
 556     int key;
 557     double temp, delay, origTime;
 558
 559     game.ididit = false;
 560     for (;;) {
 561         key = scan();
 562         if (key  != IHEOL)
 563             break;
 564         proutn(_("How long? "));
 565     }
 566     chew();
 567     if (key != IHREAL) {
 568         huh();
 569         return;
 570     }
 571     origTime = delay = aaitem;
 572     if (delay <= 0.0)
 573         return;
 574     if (delay >= game.state.remtime || game.nenhere != 0) {
 575         proutn(_("Are you sure? "));
 576         if (ja() == false)
 577             return;
 578     }
 579
 580     /* Alternate resting periods (events) with attacks */
 581
 582     game.resting = true;
 583     do {
 584         if (delay <= 0)
 585             game.resting = false;
 586         if (!game.resting) {
 587             prout(_("%d stardates left."), (int)game.state.remtime);
 588             return;
 589         }
 590         temp = game.optime = delay;
 591
 592         if (game.nenhere) {
 593             double rtime = 1.0 + Rand();
 594             if (rtime < temp)
 595                 temp = rtime;
 596             game.optime = temp;
 597         }
 598         if (game.optime < delay)
 599             attack(false);
 600         if (game.alldone)
 601             return;
 602         events();
 603         game.ididit = true;
 604         if (game.alldone)
 605             return;
 606         delay -= temp;
 607         /* Repair Deathray if long rest at starbase */
 608         if (origTime-delay >= 9.99 && game.condition == docked)
 609             game.damage[DDRAY] = 0.0;
 610     } while
 611         // leave if quadrant supernovas
 612         (!game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova);
 613
 614     game.resting = false;
 615     game.optime = 0;
 616 }
 617
 618 /*
 619  *      A nova occurs.  It is the result of having a star hit with a
 620  *      photon torpedo, or possibly of a probe warhead going off.
 621  *      Stars that go nova cause stars which surround them to undergo
 622  *      the same probabilistic process.  Klingons next to them are
 623  *      destroyed.  And if the starship is next to it, it gets zapped.
 624  *      If the zap is too much, it gets destroyed.
 625  */
 626 void nova(coord nov)
 627 /* star goes nova */
 628 {
 629     static double course[] =
 630         {0.0, 10.5, 12.0, 1.5, 9.0, 0.0, 3.0, 7.5, 6.0, 4.5};
 631     int bot, top, top2, hits[QUADSIZE+1][3], kount, icx, icy, mm, nn, j;
 632     int iquad, iquad1, i, ll;
 633     coord newc, scratch;
 634
 635     if (Rand() < 0.05) {
 636         /* Wow! We've supernova'ed */
 637         supernova(false, &nov);
 638         return;
 639     }
 640
 641     /* handle initial nova */
 642     game.quad[nov.x][nov.y] = IHDOT;
 643     crmena(false, IHSTAR, sector, nov);
 644     prout(_(" novas."));
 645     game.state.galaxy[game.quadrant.x][game.quadrant.y].stars--;
 646     game.state.starkl++;
 647
 648     /* Set up stack to recursively trigger adjacent stars */
 649     bot = top = top2 = 1;
 650     kount = 0;
 651     icx = icy = 0;
 652     hits[1][1] = nov.x;
 653     hits[1][2] = nov.y;
 654     while (1) {
 655         for (mm = bot; mm <= top; mm++)
 656             for (nn = 1; nn <= 3; nn++)  /* nn,j represents coordinates around current */
 657                 for (j = 1; j <= 3; j++) {
 658                     if (j==2 && nn== 2)
 659                         continue;
 660                     scratch.x = hits[mm][1]+nn-2;
 661                     scratch.y = hits[mm][2]+j-2;
 662                     if (!VALID_SECTOR(scratch.y, scratch.x))
 663                         continue;
 664                     iquad = game.quad[scratch.x][scratch.y];
 665                     switch (iquad) {
 666                     // case IHDOT:      /* Empty space ends reaction
 667                     // case IHQUEST:
 668                     // case IHBLANK:
 669                     // case IHT:
 670                     // case IHWEB:
 671                     default:
 672                         break;
 673                     case IHSTAR: /* Affect another star */
 674                         if (Rand() < 0.05) {
 675                             /* This star supernovas */
 676                             supernova(false, &scratch);
 677                             return;
 678                         }
 679                         top2++;
 680                         hits[top2][1]=scratch.x;
 681                         hits[top2][2]=scratch.y;
 682                         game.state.galaxy[game.quadrant.x][game.quadrant.y].stars -= 1;
 683                         game.state.starkl++;
 684                         crmena(true, IHSTAR, sector, scratch);
 685                         prout(_(" novas."));
 686                         game.quad[scratch.x][scratch.y] = IHDOT;
 687                         break;
 688                     case IHP: /* Destroy planet */
 689                         game.state.galaxy[game.quadrant.x][game.quadrant.y].planet = NOPLANET;
 690                         game.state.nplankl++;
 691                         crmena(true, IHP, sector, scratch);
 692                         prout(_(" destroyed."));
 693                         game.state.planets[game.iplnet].pclass = destroyed;
 694                         game.iplnet = 0;
 695                         invalidate(game.plnet);
 696                         if (game.landed) {
 697                             finish(FPNOVA);
 698                             return;
 699                         }
 700                         game.quad[scratch.x][scratch.y] = IHDOT;
 701                         break;
 702                     case IHB: /* Destroy base */
 703                         game.state.galaxy[game.quadrant.x][game.quadrant.y].starbase = false;
 704                         for (i = 1; i <= game.state.rembase; i++)
 705                             if (same(game.state.baseq[i], game.quadrant))
 706                                 break;
 707                         game.state.baseq[i] = game.state.baseq[game.state.rembase];
 708                         game.state.rembase--;
 709                         invalidate(game.base);
 710                         game.state.basekl++;
 711                         newcnd();
 712                         crmena(true, IHB, sector, scratch);
 713                         prout(_(" destroyed."));
 714                         game.quad[scratch.x][scratch.y] = IHDOT;
 715                         break;
 716                     case IHE: /* Buffet ship */
 717                     case IHF:
 718                         prout(_("***Starship buffeted by nova."));
 719                         if (game.shldup) {
 720                             if (game.shield >= 2000.0)
 721                                 game.shield -= 2000.0;
 722                             else {
 723                                 double diff = 2000.0 - game.shield;
 724                                 game.energy -= diff;
 725                                 game.shield = 0.0;
 726                                 game.shldup = false;
 727                                 prout(_("***Shields knocked out."));
 728                                 game.damage[DSHIELD] += 0.005*game.damfac*Rand()*diff;
 729                             }
 730                         }
 731                         else
 732                             game.energy -= 2000.0;
 733                         if (game.energy <= 0) {
 734                             finish(FNOVA);
 735                             return;
 736                         }
 737                         /* add in course nova contributes to kicking starship*/
 738                         icx += game.sector.x-hits[mm][1];
 739                         icy += game.sector.y-hits[mm][2];
 740                         kount++;
 741                         break;
 742                     case IHK: /* kill klingon */
 743                         deadkl(scratch,iquad, scratch);
 744                         break;
 745                     case IHC: /* Damage/destroy big enemies */
 746                     case IHS:
 747                     case IHR:
 748                         for (ll = 1; ll <= game.nenhere; ll++)
 749                             if (same(game.ks[ll], scratch))
 750                                 break;
 751                         game.kpower[ll] -= 800.0; /* If firepower is lost, die */
 752                         if (game.kpower[ll] <= 0.0) {
 753                             deadkl(scratch, iquad, scratch);
 754                             break;
 755                         }
 756                         newc.x = scratch.x + scratch.x - hits[mm][1];
 757                         newc.y = scratch.y + scratch.y - hits[mm][2];
 758                         crmena(true, iquad, sector, scratch);
 759                         proutn(_(" damaged"));
 760                         if (!VALID_SECTOR(newc.x, newc.y)) {
 761                             /* can't leave quadrant */
 762                             skip(1);
 763                             break;
 764                         }
 765                         iquad1 = game.quad[newc.x][newc.y];
 766                         if (iquad1 == IHBLANK) {
 767                             proutn(_(", blasted into "));
 768                             crmena(false, IHBLANK, sector, newc);
 769                             skip(1);
 770                             deadkl(scratch, iquad, newc);
 771                             break;
 772                         }
 773                         if (iquad1 != IHDOT) {
 774                             /* can't move into something else */
 775                             skip(1);
 776                             break;
 777                         }
 778                         proutn(_(", buffeted to "));
 779                         proutn(cramlc(sector, newc));
 780                         game.quad[scratch.x][scratch.y] = IHDOT;
 781                         game.quad[newc.x][newc.y] = iquad;
 782                         game.ks[ll] = newc;
 783                         game.kdist[ll] = game.kavgd[ll] = distance(game.sector, newc);
 784                         skip(1);
 785                         break;
 786                     }
 787                 }
 788         if (top == top2)
 789             break;
 790         bot = top + 1;
 791         top = top2;
 792     }
 793     if (kount==0)
 794         return;
 795
 796     /* Starship affected by nova -- kick it away. */
 797     game.dist = kount*0.1;
 798     if (icx)
 799         icx = (icx < 0 ? -1 : 1);
 800     if (icy)
 801         icy = (icy < 0 ? -1 : 1);
 802     game.direc = course[3*(icx+1)+icy+2];
 803     if (game.direc == 0.0)
 804         game.dist = 0.0;
 805     if (game.dist == 0.0)
 806         return;
 807     game.optime = 10.0*game.dist/16.0;
 808     skip(1);
 809     prout(_("Force of nova displaces starship."));
 810     imove(true);
 811     game.optime = 10.0*game.dist/16.0;
 812     return;
 813 }
 814
 815
 816 void supernova(bool induced, coord *w)
 817 /* star goes supernova */
 818 {
 819     int num = 0, nrmdead, npdead = 0, kldead, loop;
 820     coord nq;
 821
 822     if (w != NULL)
 823         nq = *w;
 824     else {
 825         int stars = 0;
 826         /* Scheduled supernova -- select star */
 827         /* logic changed here so that we won't favor quadrants in top
 828            left of universe */
 829         for (nq.x = 1; nq.x <= GALSIZE; nq.x++)
 830             for (nq.y = 1; nq.y <= GALSIZE; nq.y++)
 831                 stars += game.state.galaxy[nq.x][nq.y].stars;
 832         if (stars == 0)
 833             return; /* nothing to supernova exists */
 834         num = Rand()*stars + 1;
 835         for (nq.x = 1; nq.x <= GALSIZE; nq.x++) {
 836             for (nq.y = 1; nq.y <= GALSIZE; nq.y++) {
 837                 num -= game.state.galaxy[nq.x][nq.y].stars;
 838                 if (num <= 0)
 839                     break;
 840             }
 841             if (num <=0)
 842                 break;
 843         }
 844         if (idebug) {
 845             proutn("=== Super nova here?");
 846             if (ja() == true)
 847                 nq = game.quadrant;
 848         }
 849     }
 850
 851     if (!same(nq, game.quadrant) || game.justin) {
 852         /* it isn't here, or we just entered (treat as enroute) */
 853         if (!damaged(DRADIO) || game.condition == docked) {
 854             skip(1);
 855             prout(_("Message from Starfleet Command       Stardate %.2f"), game.state.date);
 856             prout(_("     Supernova in %s; caution advised."),
 857                   cramlc(quadrant, nq));
 858         }
 859     }
 860     else {
 861         coord ns;
 862         /* we are in the quadrant! */
 863         num = Rand()* game.state.galaxy[nq.x][nq.y].stars + 1;
 864         for (ns.x = 1; ns.x <= QUADSIZE; ns.x++) {
 865             for (ns.y = 1; ns.y <= QUADSIZE; ns.y++) {
 866                 if (game.quad[ns.x][ns.y]==IHSTAR) {
 867                     num--;
 868                     if (num==0)
 869                         break;
 870                 }
 871             }
 872             if (num==0)
 873                 break;
 874         }
 875
 876         skip(1);
 877         prouts(_("***RED ALERT!  RED ALERT!"));
 878         skip(1);
 879         prout(_("***Incipient supernova detected at %s"), cramlc(sector, ns));
 880         if (square(ns.x-game.sector.x) + square(ns.y-game.sector.y) <= 2.1) {
 881             proutn(_("Emergency override attempts t"));
 882             prouts("***************");
 883             skip(1);
 884             stars();
 885             game.alldone = true;
 886         }
 887     }
 888
 889     /* destroy any Klingons in supernovaed quadrant */
 890     kldead = game.state.galaxy[nq.x][nq.y].klingons;
 891     game.state.galaxy[nq.x][nq.y].klingons = 0;
 892     if (same(nq, game.state.kscmdr)) {
 893         /* did in the Supercommander! */
 894         game.state.nscrem = game.state.kscmdr.x = game.state.kscmdr.y = game.isatb =  0;
 895         game.iscate = false;
 896         unschedule(FSCMOVE);
 897         unschedule(FSCDBAS);
 898     }
 899     if (game.state.remcom) {
 900         int maxloop = game.state.remcom, l;
 901         for (l = 1; l <= maxloop; l++) {
 902             if (same(game.state.kcmdr[l], nq)) {
 903                 game.state.kcmdr[l] = game.state.kcmdr[game.state.remcom];
 904                 invalidate(game.state.kcmdr[game.state.remcom]);
 905                 game.state.remcom--;
 906                 kldead--;
 907                 if (game.state.remcom==0)
 908                     unschedule(FTBEAM);
 909                 break;
 910             }
 911         }
 912     }
 913     game.state.remkl -= kldead;
 914     /* destroy Romulans and planets in supernovaed quadrant */
 915     nrmdead = game.state.galaxy[nq.x][nq.y].romulans;
 916     game.state.galaxy[nq.x][nq.y].romulans = 0;
 917     game.state.nromrem -= nrmdead;
 918     /* Destroy planets */
 919     for (loop = 0; loop < game.inplan; loop++) {
 920         if (same(game.state.planets[loop].w, nq)) {
 921             game.state.planets[loop].pclass = destroyed;
 922             npdead++;
 923         }
 924     }
 925     /* Destroy any base in supernovaed quadrant */
 926     if (game.state.rembase) {
 927         int maxloop = game.state.rembase, loop;
 928         for (loop = 1; loop <= maxloop; loop++)
 929             if (same(game.state.baseq[loop], nq)) {
 930                 game.state.baseq[loop] = game.state.baseq[game.state.rembase];
 931                 invalidate(game.state.baseq[game.state.rembase]);
 932                 game.state.rembase--;
 933                 break;
 934             }
 935     }
 936     /* If starship caused supernova, tally up destruction */
 937     if (induced) {
 938         game.state.starkl += game.state.galaxy[nq.x][nq.y].stars;
 939         game.state.basekl += game.state.galaxy[nq.x][nq.y].starbase;
 940         game.state.nplankl += npdead;
 941     }
 942     /* mark supernova in galaxy and in star chart */
 943     if (same(game.quadrant, nq) || !damaged(DRADIO) || game.condition == docked)
 944         game.state.galaxy[nq.x][nq.y].supernova = true;
 945     /* If supernova destroys last Klingons give special message */
 946     if ((game.state.remkl + game.state.remcom + game.state.nscrem)==0 && !same(nq, game.quadrant)) {
 947         skip(2);
 948         if (!induced)
 949             prout(_("Lucky you!"));
 950         proutn(_("A supernova in %s has just destroyed the last Klingons."),
 951                cramlc(quadrant, nq));
 952         finish(FWON);
 953         return;
 954     }
 955     /* if some Klingons remain, continue or die in supernova */
 956     if (game.alldone)
 957         finish(FSNOVAED);
 958     return;
 959 }