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