src/moving.c

   1 #include <unistd.h>
   2 #include "sstlinux.h"
   3 #include "sst.h"
   4
   5 static void getcd(bool, int);
   6
   7 void imove(void)
   8 {
   9     double angle, deltax, deltay, bigger, x, y,
  10         finald, finalx, finaly, stopegy, probf;
  11     int trbeam = 0, n, l, kink, kinks, iquad;
  12     coord w;
  13
  14     w.x = w.y = 0;
  15     if (game.inorbit) {
  16         prout("Helmsman Sulu- \"Leaving standard orbit.\"");
  17         game.inorbit = false;
  18     }
  19
  20     angle = ((15.0 - game.direc) * 0.5235988);
  21     deltax = -sin(angle);
  22     deltay = cos(angle);
  23     if (fabs(deltax) > fabs(deltay))
  24         bigger = fabs(deltax);
  25     else
  26         bigger = fabs(deltay);
  27
  28     deltay /= bigger;
  29     deltax /= bigger;
  30
  31     /* If tractor beam is to occur, don't move full distance */
  32     if (game.state.date+game.optime >= scheduled(FTBEAM)) {
  33         trbeam = 1;
  34         game.condit = IHRED;
  35         game.dist = game.dist*(scheduled(FTBEAM)-game.state.date)/game.optime + 0.1;
  36         game.optime = scheduled(FTBEAM) - game.state.date + 1e-5;
  37     }
  38     /* Move within the quadrant */
  39     game.quad[game.sector.x][game.sector.y] = IHDOT;
  40     x = game.sector.x;
  41     y = game.sector.y;
  42     n = 10.0*game.dist*bigger+0.5;
  43
  44     if (n > 0) {
  45         for (l = 1; l <= n; l++) {
  46             w.x = (x += deltax) + 0.5;
  47             w.y = (y += deltay) + 0.5;
  48             if (!VALID_SECTOR(w.x, w.y)) {
  49                 /* Leaving quadrant -- allow final enemy attack */
  50                 /* Don't do it if being pushed by Nova */
  51                 if (game.nenhere != 0 && game.iattak != 2) {
  52                     newcnd();
  53                     for_local_enemies(l) {
  54                         finald = sqrt((w.x-game.ks[l].x)*(double)(w.x-game.ks[l].x) +
  55                                       (w.y-game.ks[l].y)*(double)(w.y-game.ks[l].y));
  56                         game.kavgd[l] = 0.5 * (finald+game.kdist[l]);
  57                     }
  58                     /*
  59                      * Stas Sergeev added the game.condition
  60                      * that attacks only happen if Klingons
  61                      * are present and your skill is good.
  62                      */
  63                     if (game.skill > SKILL_GOOD && game.klhere > 0 && !game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova)
  64                         attack(0);
  65                     if (game.alldone) return;
  66                 }
  67                 /* compute final position -- new quadrant and sector */
  68                 x = QUADSIZE*(game.quadrant.x-1)+game.sector.x;
  69                 y = QUADSIZE*(game.quadrant.y-1)+game.sector.y;
  70                 w.x = x+10.0*game.dist*bigger*deltax+0.5;
  71                 w.y = y+10.0*game.dist*bigger*deltay+0.5;
  72                 /* check for edge of galaxy */
  73                 kinks = 0;
  74                 do {
  75                     kink = 0;
  76                     if (w.x <= 0) {
  77                         w.x = -w.x + 1;
  78                         kink = 1;
  79                     }
  80                     if (w.y <= 0) {
  81                         w.y = -w.y + 1;
  82                         kink = 1;
  83                     }
  84                     if (w.x > GALSIZE*QUADSIZE) {
  85                         w.x = (GALSIZE*QUADSIZE*2)+1 - w.x;
  86                         kink = 1;
  87                     }
  88                     if (w.y > GALSIZE*QUADSIZE) {
  89                         w.y = (GALSIZE*QUADSIZE*2)+1 - w.y;
  90                         kink = 1;
  91                     }
  92                     if (kink) kinks = 1;
  93                 } while (kink);
  94
  95                 if (kinks) {
  96                     game.nkinks += 1;
  97                     if (game.nkinks == 3) {
  98                         /* Three strikes -- you're out! */
  99                         finish(FNEG3);
 100                         return;
 101                     }
 102                     skip(1);
 103                     prout("YOU HAVE ATTEMPTED TO CROSS THE NEGATIVE ENERGY BARRIER");
 104                     prout("AT THE EDGE OF THE GALAXY.  THE THIRD TIME YOU TRY THIS,");
 105                     prout("YOU WILL BE DESTROYED.");
 106                 }
 107                 /* Compute final position in new quadrant */
 108                 if (trbeam) return; /* Don't bother if we are to be beamed */
 109                 game.quadrant.x = (w.x+(QUADSIZE-1))/QUADSIZE;
 110                 game.quadrant.y = (w.y+(QUADSIZE-1))/QUADSIZE;
 111                 game.sector.x = w.x - QUADSIZE*(game.quadrant.x-1);
 112                 game.sector.y = w.y - QUADSIZE*(game.quadrant.y-1);
 113                 skip(1);
 114                 prout("Entering %s.", cramlc(quadrant, game.quadrant));
 115                 game.quad[game.sector.x][game.sector.y] = game.ship;
 116                 newqad(0);
 117                 if (game.skill>SKILL_NOVICE) attack(0);
 118                 return;
 119             }
 120             iquad = game.quad[w.x][w.y];
 121             if (iquad != IHDOT) {
 122                 /* object encountered in flight path */
 123                 stopegy = 50.0*game.dist/game.optime;
 124                 game.dist=0.1*sqrt((game.sector.x-w.x)*(double)(game.sector.x-w.x) +
 125                               (game.sector.y-w.y)*(double)(game.sector.y-w.y));
 126                 switch (iquad) {
 127                 case IHT: /* Ram a Tholian */
 128                 case IHK: /* Ram enemy ship */
 129                 case IHC:
 130                 case IHS:
 131                 case IHR:
 132                 case IHQUEST:
 133                     game.sector.x = w.x;
 134                     game.sector.y = w.y;
 135                     ram(0, iquad, game.sector);
 136                     finalx = game.sector.x;
 137                     finaly = game.sector.y;
 138                     break;
 139                 case IHBLANK:
 140                     skip(1);
 141                     prouts("***RED ALERT!  RED ALERT!");
 142                     skip(1);
 143                     proutn("***");
 144                     crmshp();
 145                     proutn(" pulled into black hole at ");
 146                     prout(cramlc(sector, w));
 147                     /*
 148                      * Getting pulled into a black hole was certain
 149                      * death in Almy's original.  Stas Sergeev added a
 150                      * possibility that you'll get timewarped instead.
 151                      */
 152                     n=0;
 153                     for (l=0;l<NDEVICES;l++)
 154                         if (game.damage[l]>0)
 155                             n++;
 156                     probf=pow(1.4,(game.energy+game.shield)/5000.0-1.0)*pow(1.3,1.0/(n+1)-1.0);
 157                     if ((game.options & OPTION_BLKHOLE) && Rand()>probf)
 158                         timwrp();
 159                     else
 160                         finish(FHOLE);
 161                     return;
 162                 default:
 163                     /* something else */
 164                     skip(1);
 165                     crmshp();
 166                     if (iquad == IHWEB)
 167                         proutn(" encounters Tholian web at ");
 168                     else
 169                         proutn(" blocked by object at ");
 170                     proutn(cramlc(sector, w));
 171                     prout(";");
 172                     proutn("Emergency stop required ");
 173                     prout("%2d units of energy.", (int)stopegy);
 174                     game.energy -= stopegy;
 175                     finalx = x-deltax+0.5;
 176                     game.sector.x = finalx;
 177                     finaly = y-deltay+0.5;
 178                     game.sector.y = finaly;
 179                     if (game.energy <= 0) {
 180                         finish(FNRG);
 181                         return;
 182                     }
 183                     break;
 184                 }
 185                 goto no_quad_change;    /* sorry! */
 186             }
 187         }
 188         game.dist = 0.1*sqrt((game.sector.x-w.x)*(double)(game.sector.x-w.x) +
 189                         (game.sector.y-w.y)*(double)(game.sector.y-w.y));
 190         game.sector.x = w.x;
 191         game.sector.y = w.y;
 192     }
 193     finalx = game.sector.x;
 194     finaly = game.sector.y;
 195 no_quad_change:
 196     /* No quadrant change -- compute new avg enemy distances */
 197     game.quad[game.sector.x][game.sector.y] = game.ship;
 198     if (game.nenhere) {
 199         for_local_enemies(l) {
 200             finald = sqrt((w.x-game.ks[l].x)*(double)(w.x-game.ks[l].x) +
 201                           (w.y-game.ks[l].y)*(double)(w.y-game.ks[l].y));
 202             game.kavgd[l] = 0.5 * (finald+game.kdist[l]);
 203             game.kdist[l] = finald;
 204         }
 205         sortkl();
 206         if (!game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova && game.iattak == 0)
 207             attack(0);
 208         for_local_enemies(l) game.kavgd[l] = game.kdist[l];
 209     }
 210     newcnd();
 211     game.iattak = 0;
 212     drawmaps(0);
 213     setwnd(message_window);
 214     return;
 215 }
 216
 217 void dock(int l)
 218 {
 219     chew();
 220     if (game.condit == IHDOCKED && l) {
 221         prout("Already docked.");
 222         return;
 223     }
 224     if (game.inorbit) {
 225         prout("You must first leave standard orbit.");
 226         return;
 227     }
 228     if (game.base.x==0 || abs(game.sector.x-game.base.x) > 1 || abs(game.sector.y-game.base.y) > 1) {
 229         crmshp();
 230         prout(" not adjacent to base.");
 231         return;
 232     }
 233     game.condit = IHDOCKED;
 234     if (l) prout("Docked.");
 235     game.ididit=1;
 236     if (game.energy < game.inenrg) game.energy = game.inenrg;
 237     game.shield = game.inshld;
 238     game.torps = game.intorps;
 239     game.lsupres = game.inlsr;
 240     if (game.damage[DRADIO] == 0.0 &&
 241         (is_scheduled(FCDBAS) || game.isatb == 1) && game.iseenit == 0) {
 242         /* get attack report from base */
 243         prout("Lt. Uhura- \"Captain, an important message from the starbase:\"");
 244         attakreport(0);
 245         game.iseenit = 1;
 246     }
 247 }
 248
 249 static void getcd(bool isprobe, int akey) {
 250         /* This program originally required input in terms of a (clock)
 251            direction and distance. Somewhere in history, it was changed to
 252            cartesian coordinates. So we need to convert. I think
 253            "manual" input should still be done this way -- it's a real
 254            pain if the computer isn't working! Manual mode is still confusing
 255            because it involves giving x and y motions, yet the coordinates
 256            are always displayed y - x, where +y is downward! */
 257
 258
 259         int irowq=game.quadrant.x, icolq=game.quadrant.y, itemp=0, iprompt=0, key=0;
 260         double xi, xj, xk, xl;
 261         double deltax, deltay;
 262         int automatic = -1;
 263         coord incr;
 264
 265         /* Get course direction and distance. If user types bad values, return
 266            with DIREC = -1.0. */
 267
 268         game.direc = -1.0;
 269
 270         if (game.landed == 1 && !isprobe) {
 271                 prout("Dummy! You can't leave standard orbit until you");
 272                 proutn("are back aboard the ");
 273                 crmshp();
 274                 prout(".");
 275                 chew();
 276                 return;
 277         }
 278         while (automatic == -1) {
 279                 if (game.damage[DCOMPTR]) {
 280                         if (isprobe)
 281                                 prout("Computer damaged; manual navigation only");
 282                         else
 283                                 prout("Computer damaged; manual movement only");
 284                         chew();
 285                         automatic = 0;
 286                         key = IHEOL;
 287                         break;
 288                 }
 289                 if (isprobe && akey != -1) {
 290                         /* For probe launch, use pre-scaned value first time */
 291                         key = akey;
 292                         akey = -1;
 293                 }
 294                 else
 295                         key = scan();
 296
 297                 if (key == IHEOL) {
 298                         proutn("Manual or automatic- ");
 299                         iprompt = 1;
 300                         chew();
 301                 }
 302                 else if (key == IHALPHA) {
 303                         if (isit("manual")) {
 304                                 automatic =0;
 305                                 key = scan();
 306                                 break;
 307                         }
 308                         else if (isit("automatic")) {
 309                                 automatic = 1;
 310                                 key = scan();
 311                                 break;
 312                         }
 313                         else {
 314                                 huh();
 315                                 chew();
 316                                 return;
 317                         }
 318                 }
 319                 else { /* numeric */
 320                         if (isprobe)
 321                                 prout("(Manual navigation assumed.)");
 322                         else
 323                                 prout("(Manual movement assumed.)");
 324                         automatic = 0;
 325                         break;
 326                 }
 327         }
 328
 329         if (automatic) {
 330                 while (key == IHEOL) {
 331                         if (isprobe)
 332                                 proutn("Target quadrant or quadrant&sector- ");
 333                         else
 334                                 proutn("Destination sector or quadrant&sector- ");
 335                         chew();
 336                         iprompt = 1;
 337                         key = scan();
 338                 }
 339
 340                 if (key != IHREAL) {
 341                         huh();
 342                         return;
 343                 }
 344                 xi = aaitem;
 345                 key = scan();
 346                 if (key != IHREAL){
 347                         huh();
 348                         return;
 349                 }
 350                 xj = aaitem;
 351                 key = scan();
 352                 if (key == IHREAL) {
 353                         /* both quadrant and sector specified */
 354                         xk = aaitem;
 355                         key = scan();
 356                         if (key != IHREAL) {
 357                                 huh();
 358                                 return;
 359                         }
 360                         xl = aaitem;
 361
 362                         irowq = xi + 0.5;
 363                         icolq = xj + 0.5;
 364                         incr.y = xk + 0.5;
 365                         incr.x = xl + 0.5;
 366                 }
 367                 else {
 368                         if (isprobe) {
 369                                 /* only quadrant specified -- go to center of dest quad */
 370                                 irowq = xi + 0.5;
 371                                 icolq = xj + 0.5;
 372                                 incr.y = incr.x = 5;
 373                         }
 374                         else {
 375                                 incr.y = xi + 0.5;
 376                                 incr.x = xj + 0.5;
 377                         }
 378                         itemp = 1;
 379                 }
 380                 if (!VALID_QUADRANT(icolq,irowq)||!VALID_SECTOR(incr.x,incr.y)) {
 381                     huh();
 382                     return;
 383                 }
 384                 skip(1);
 385                 if (!isprobe) {
 386                         if (itemp) {
 387                                 if (iprompt) {
 388                                         prout("Helmsman Sulu- \"Course locked in for %s.\"",
 389                                                 cramlc(sector, incr));
 390                                 }
 391                         }
 392                         else prout("Ensign Chekov- \"Course laid in, Captain.\"");
 393                 }
 394                 deltax = icolq - game.quadrant.y + 0.1*(incr.x-game.sector.y);
 395                 deltay = game.quadrant.x - irowq + 0.1*(game.sector.x-incr.y);
 396         }
 397         else { /* manual */
 398                 while (key == IHEOL) {
 399                         proutn("X and Y displacements- ");
 400                         chew();
 401                         iprompt = 1;
 402                         key = scan();
 403                 }
 404                 itemp = 2;
 405                 if (key != IHREAL) {
 406                         huh();
 407                         return;
 408                 }
 409                 deltax = aaitem;
 410                 key = scan();
 411                 if (key != IHREAL) {
 412                         huh();
 413                         return;
 414                 }
 415                 deltay = aaitem;
 416         }
 417         /* Check for zero movement */
 418         if (deltax == 0 && deltay == 0) {
 419                 chew();
 420                 return;
 421         }
 422         if (itemp == 2 && !isprobe) {
 423                 skip(1);
 424                 prout("Helmsman Sulu- \"Aye, Sir.\"");
 425         }
 426         game.dist = sqrt(deltax*deltax + deltay*deltay);
 427         game.direc = atan2(deltax, deltay)*1.90985932;
 428         if (game.direc < 0.0) game.direc += 12.0;
 429         chew();
 430         return;
 431
 432 }
 433
 434
 435
 436 void impuls(void)
 437 {
 438     double power;
 439
 440     game.ididit = 0;
 441     if (game.damage[DIMPULS]) {
 442         chew();
 443         skip(1);
 444         prout("Engineer Scott- \"The impulse engines are damaged, Sir.\"");
 445         return;
 446     }
 447
 448     if (game.energy > 30.0) {
 449         getcd(false, 0);
 450         if (game.direc == -1.0) return;
 451         power = 20.0 + 100.0*game.dist;
 452     }
 453     else
 454         power = 30.0;
 455
 456     if (power >= game.energy) {
 457         /* Insufficient power for trip */
 458         skip(1);
 459         prout("First Officer Spock- \"Captain, the impulse engines");
 460         prout("require 20.0 units to engage, plus 100.0 units per");
 461         if (game.energy > 30) {
 462             proutn("quadrant.  We can go, therefore, a maximum of %d",
 463                    (int)(0.01 * (game.energy-20.0)-0.05));
 464             prout(" quadrants.\"");
 465         }
 466         else {
 467             prout("quadrant.  They are, therefore, useless.\"");
 468         }
 469         chew();
 470         return;
 471     }
 472     /* Make sure enough time is left for the trip */
 473     game.optime = game.dist/0.095;
 474     if (game.optime >= game.state.remtime) {
 475         prout("First Officer Spock- \"Captain, our speed under impulse");
 476         prout("power is only 0.95 sectors per stardate. Are you sure");
 477         proutn("we dare spend the time?\" ");
 478         if (ja() == 0) return;
 479     }
 480     /* Activate impulse engines and pay the cost */
 481     imove();
 482     game.ididit = 1;
 483     if (game.alldone) return;
 484     power = 20.0 + 100.0*game.dist;
 485     game.energy -= power;
 486     game.optime = game.dist/0.095;
 487     if (game.energy <= 0) finish(FNRG);
 488     return;
 489 }
 490
 491
 492 void warp(bool timewarp)
 493 {
 494     int blooey=0, twarp=0, iwarp;
 495     double power;
 496
 497     if (!timewarp) { /* Not WARPX entry */
 498         game.ididit = 0;
 499         if (game.damage[DWARPEN] > 10.0) {
 500             chew();
 501             skip(1);
 502             prout("Engineer Scott- \"The impulse engines are damaged, Sir.\"");
 503             return;
 504         }
 505         if (game.damage[DWARPEN] > 0.0 && game.warpfac > 4.0) {
 506             chew();
 507             skip(1);
 508             prout("Engineer Scott- \"Sorry, Captain. Until this damage");
 509             prout("  is repaired, I can only give you warp 4.\"");
 510             return;
 511         }
 512
 513         /* Read in course and distance */
 514         getcd(false, 0);
 515         if (game.direc == -1.0) return;
 516
 517         /* Make sure starship has enough energy for the trip */
 518         power = (game.dist+0.05)*game.warpfac*game.warpfac*game.warpfac*(game.shldup+1);
 519
 520
 521         if (power >= game.energy) {
 522             /* Insufficient power for trip */
 523             game.ididit = 0;
 524             skip(1);
 525             prout("Engineering to bridge--");
 526             if (!game.shldup || 0.5*power > game.energy) {
 527                 iwarp = pow((game.energy/(game.dist+0.05)), 0.333333333);
 528                 if (iwarp <= 0) {
 529                     prout("We can't do it, Captain. We haven't the energy.");
 530                 }
 531                 else {
 532                     proutn("We haven't the energy, but we could do it at warp %d", iwarp);
 533                     if (game.shldup) {
 534                         prout(",");
 535                         prout("if you'll lower the shields.");
 536                     }
 537                     else
 538                         prout(".");
 539                 }
 540             }
 541             else
 542                 prout("We haven't the energy to go that far with the shields up.");
 543             return;
 544         }
 545
 546         /* Make sure enough time is left for the trip */
 547         game.optime = 10.0*game.dist/game.wfacsq;
 548         if (game.optime >= 0.8*game.state.remtime) {
 549             skip(1);
 550             prout("First Officer Spock- \"Captain, I compute that such");
 551             proutn("  a trip would require approximately %2.0f",
 552                    100.0*game.optime/game.state.remtime);
 553             prout(" percent of our");
 554             proutn("  remaining time.  Are you sure this is wise?\" ");
 555             if (ja() == 0) { game.ididit = 0; game.optime=0; return;}
 556         }
 557     }
 558     /* Entry WARPX */
 559     if (game.warpfac > 6.0) {
 560         /* Decide if engine damage will occur */
 561         double prob = game.dist*(6.0-game.warpfac)*(6.0-game.warpfac)/66.666666666;
 562         if (prob > Rand()) {
 563             blooey = 1;
 564             game.dist = Rand()*game.dist;
 565         }
 566         /* Decide if time warp will occur */
 567         if (0.5*game.dist*pow(7.0,game.warpfac-10.0) > Rand()) twarp=1;
 568         if (idebug && game.warpfac==10 && twarp==0) {
 569             blooey=0;
 570             proutn("=== Force time warp? ");
 571             if (ja()==1) twarp=1;
 572         }
 573         if (blooey || twarp) {
 574             /* If time warp or engine damage, check path */
 575             /* If it is obstructed, don't do warp or damage */
 576             double angle = ((15.0-game.direc)*0.5235998);
 577             double deltax = -sin(angle);
 578             double deltay = cos(angle);
 579             double bigger, x, y;
 580             int n, l, ix, iy;
 581             if (fabs(deltax) > fabs(deltay))
 582                 bigger = fabs(deltax);
 583             else
 584                 bigger = fabs(deltay);
 585
 586             deltax /= bigger;
 587             deltay /= bigger;
 588             n = 10.0 * game.dist * bigger +0.5;
 589             x = game.sector.x;
 590             y = game.sector.y;
 591             for (l = 1; l <= n; l++) {
 592                 x += deltax;
 593                 ix = x + 0.5;
 594                 y += deltay;
 595                 iy = y +0.5;
 596                 if (!VALID_SECTOR(ix, iy)) break;
 597                 if (game.quad[ix][iy] != IHDOT) {
 598                     blooey = 0;
 599                     twarp = 0;
 600                 }
 601             }
 602         }
 603     }
 604
 605
 606     /* Activate Warp Engines and pay the cost */
 607     imove();
 608     if (game.alldone) return;
 609     game.energy -= game.dist*game.warpfac*game.warpfac*game.warpfac*(game.shldup+1);
 610     if (game.energy <= 0) finish(FNRG);
 611     game.optime = 10.0*game.dist/game.wfacsq;
 612     if (twarp) timwrp();
 613     if (blooey) {
 614         game.damage[DWARPEN] = game.damfac*(3.0*Rand()+1.0);
 615         skip(1);
 616         prout("Engineering to bridge--");
 617         prout("  Scott here.  The warp engines are damaged.");
 618         prout("  We'll have to reduce speed to warp 4.");
 619     }
 620     game.ididit = 1;
 621     return;
 622 }
 623
 624
 625
 626 void setwrp(void)
 627 {
 628     int key;
 629     double oldfac;
 630
 631     while ((key=scan()) == IHEOL) {
 632         chew();
 633         proutn("Warp factor- ");
 634     }
 635     chew();
 636     if (key != IHREAL) {
 637         huh();
 638         return;
 639     }
 640     if (game.damage[DWARPEN] > 10.0) {
 641         prout("Warp engines inoperative.");
 642         return;
 643     }
 644     if (game.damage[DWARPEN] > 0.0 && aaitem > 4.0) {
 645         prout("Engineer Scott- \"I'm doing my best, Captain,");
 646         prout("  but right now we can only go warp 4.\"");
 647         return;
 648     }
 649     if (aaitem > 10.0) {
 650         prout("Helmsman Sulu- \"Our top speed is warp 10, Captain.\"");
 651         return;
 652     }
 653     if (aaitem < 1.0) {
 654         prout("Helmsman Sulu- \"We can't go below warp 1, Captain.\"");
 655         return;
 656     }
 657     oldfac = game.warpfac;
 658     game.warpfac = aaitem;
 659     game.wfacsq=game.warpfac*game.warpfac;
 660     if (game.warpfac <= oldfac || game.warpfac <= 6.0) {
 661         proutn("Helmsman Sulu- \"Warp factor %d, Captain.\"",
 662                (int)game.warpfac);
 663         return;
 664     }
 665     if (game.warpfac < 8.00) {
 666         prout("Engineer Scott- \"Aye, but our maximum safe speed is warp 6.\"");
 667         return;
 668     }
 669     if (game.warpfac == 10.0) {
 670         prout("Engineer Scott- \"Aye, Captain, we'll try it.\"");
 671         return;
 672     }
 673     prout("Engineer Scott- \"Aye, Captain, but our engines may not take it.\"");
 674     return;
 675 }
 676
 677 void atover(int igrab)
 678 {
 679     double power, distreq;
 680
 681     chew();
 682     /* is captain on planet? */
 683     if (game.landed==1) {
 684         if (game.damage[DTRANSP]) {
 685             finish(FPNOVA);
 686             return;
 687         }
 688         prout("Scotty rushes to the transporter controls.");
 689         if (game.shldup) {
 690             prout("But with the shields up it's hopeless.");
 691             finish(FPNOVA);
 692         }
 693         prouts("His desperate attempt to rescue you . . .");
 694         if (Rand() <= 0.5) {
 695             prout("fails.");
 696             finish(FPNOVA);
 697             return;
 698         }
 699         prout("SUCCEEDS!");
 700         if (game.imine) {
 701             game.imine = 0;
 702             proutn("The crystals mined were ");
 703             if (Rand() <= 0.25) {
 704                 prout("lost.");
 705             }
 706             else {
 707                 prout("saved.");
 708                 game.icrystl = 1;
 709             }
 710         }
 711     }
 712     if (igrab) return;
 713
 714     /* Check to see if captain in shuttle craft */
 715     if (game.icraft) finish(FSTRACTOR);
 716     if (game.alldone) return;
 717
 718     /* Inform captain of attempt to reach safety */
 719     skip(1);
 720     do {
 721         if (game.justin) {
 722             prouts("***RED ALERT!  READ ALERT!");
 723             skip(1);
 724             proutn("The ");
 725             crmshp();
 726             prout(" has stopped in a quadrant containing");
 727             prouts("   a supernova.");
 728             skip(2);
 729         }
 730         proutn("***Emergency automatic override attempts to hurl ");
 731         crmshp();
 732         skip(1);
 733         prout("safely out of quadrant.");
 734         if (game.damage[DRADIO] == 0.0)
 735             game.state.galaxy[game.quadrant.x][game.quadrant.y].charted = true;
 736         /* Try to use warp engines */
 737         if (game.damage[DWARPEN]) {
 738             skip(1);
 739             prout("Warp engines damaged.");
 740             finish(FSNOVAED);
 741             return;
 742         }
 743         game.warpfac = 6.0+2.0*Rand();
 744         game.wfacsq = game.warpfac * game.warpfac;
 745         prout("Warp factor set to %d", (int)game.warpfac);
 746         power = 0.75*game.energy;
 747         game.dist = power/(game.warpfac*game.warpfac*game.warpfac*(game.shldup+1));
 748         distreq = 1.4142+Rand();
 749         if (distreq < game.dist) game.dist = distreq;
 750         game.optime = 10.0*game.dist/game.wfacsq;
 751         game.direc = 12.0*Rand();       /* How dumb! */
 752         game.justin = false;
 753         game.inorbit = false;
 754         warp(true);
 755         if (!game.justin) {
 756             /* This is bad news, we didn't leave quadrant. */
 757             if (game.alldone) return;
 758             skip(1);
 759             prout("Insufficient energy to leave quadrant.");
 760             finish(FSNOVAED);
 761             return;
 762         }
 763     } while
 764         /* Repeat if another snova */
 765         (game.state.galaxy[game.quadrant.x][game.quadrant.y].supernova);
 766     if (KLINGREM==0)
 767         finish(FWON); /* Snova killed remaining enemy. */
 768 }
 769
 770 void timwrp()
 771 {
 772     int l, gotit;
 773     prout("***TIME WARP ENTERED.");
 774     if (game.state.snap && Rand() < 0.5) {
 775         /* Go back in time */
 776         prout("You are traveling backwards in time %d stardates.",
 777               (int)(game.state.date-game.snapsht.date));
 778         game.state = game.snapsht;
 779         game.state.snap = 0;
 780         if (game.state.remcom) {
 781             schedule(FTBEAM, expran(game.intime/game.state.remcom));
 782             schedule(FBATTAK, expran(0.3*game.intime));
 783         }
 784         schedule(FSNOVA, expran(0.5*game.intime));
 785         /* next snapshot will be sooner */
 786         schedule(FSNAP, expran(0.25*game.state.remtime));
 787
 788         if (game.state.nscrem) schedule(FSCMOVE, 0.2777);
 789         game.isatb = 0;
 790         unschedule(FCDBAS);
 791         unschedule(FSCDBAS);
 792         game.battle.x = game.battle.y = 0;
 793
 794         /* Make sure Galileo is consistant -- Snapshot may have been taken
 795            when on planet, which would give us two Galileos! */
 796         gotit = 0;
 797         for (l = 0; l < game.inplan; l++) {
 798             if (game.state.plnets[l].known == shuttle_down) {
 799                 gotit = 1;
 800                 if (game.iscraft==1 && game.ship==IHE) {
 801                     prout("Checkov-  \"Security reports the Galileo has disappeared, Sir!");
 802                     game.iscraft = 0;
 803                 }
 804             }
 805         }
 806         /* Likewise, if in the original time the Galileo was abandoned, but
 807            was on ship earlier, it would have vanished -- lets restore it */
 808         if (game.iscraft==0 && gotit==0 && game.damage[DSHUTTL] >= 0.0) {
 809             prout("Checkov-  \"Security reports the Galileo has reappeared in the dock!\"");
 810             game.iscraft = 1;
 811         }
 812         /*
 813          * There used to be code to do the actual reconstrction here,
 814          * but the starchart is now part of the snapshotted galaxy state.
 815          */
 816         prout("Spock has reconstructed a correct star chart from memory");
 817     }
 818     else {
 819         /* Go forward in time */
 820         game.optime = -0.5*game.intime*log(Rand());
 821         prout("You are traveling forward in time %d stardates.", (int)game.optime);
 822         /* cheat to make sure no tractor beams occur during time warp */
 823         postpone(FTBEAM, game.optime);
 824         game.damage[DRADIO] += game.optime;
 825     }
 826     newqad(0);
 827     events();   /* Stas Sergeev added this -- do pending events */
 828 }
 829
 830 void probe(void)
 831 {
 832     double angle, bigger;
 833     int key;
 834     /* New code to launch a deep space probe */
 835     if (game.nprobes == 0) {
 836         chew();
 837         skip(1);
 838         if (game.ship == IHE)
 839             prout("Engineer Scott- \"We have no more deep space probes, Sir.\"");
 840         else
 841             prout("Ye Faerie Queene has no deep space probes.");
 842         return;
 843     }
 844     if (game.damage[DDSP] != 0.0) {
 845         chew();
 846         skip(1);
 847         prout("Engineer Scott- \"The probe launcher is damaged, Sir.\"");
 848         return;
 849     }
 850     if (is_scheduled(FDSPROB)) {
 851         chew();
 852         skip(1);
 853         if (game.damage[DRADIO] != 0 && game.condit != IHDOCKED) {
 854             prout("Spock-  \"Records show the previous probe has not yet");
 855             prout("   reached its destination.\"");
 856         }
 857         else
 858             prout("Uhura- \"The previous probe is still reporting data, Sir.\"");
 859         return;
 860     }
 861     key = scan();
 862
 863     if (key == IHEOL) {
 864         /* slow mode, so let Kirk know how many probes there are left */
 865         prout(game.nprobes==1 ? "%d probe left." : "%d probes left.", game.nprobes);
 866         proutn("Are you sure you want to fire a probe? ");
 867         if (ja()==0) return;
 868     }
 869
 870     game.isarmed = false;
 871     if (key == IHALPHA && strcmp(citem,"armed") == 0) {
 872         game.isarmed = true;
 873         key = scan();
 874     }
 875     else if (key == IHEOL) {
 876         proutn("Arm NOVAMAX warhead? ");
 877         game.isarmed = ja();
 878     }
 879     getcd(true, key);
 880     if (game.direc == -1.0) return;
 881     game.nprobes--;
 882     angle = ((15.0 - game.direc) * 0.5235988);
 883     game.probeinx = -sin(angle);
 884     game.probeiny = cos(angle);
 885     if (fabs(game.probeinx) > fabs(game.probeiny))
 886         bigger = fabs(game.probeinx);
 887     else
 888         bigger = fabs(game.probeiny);
 889
 890     game.probeiny /= bigger;
 891     game.probeinx /= bigger;
 892     game.proben = 10.0*game.dist*bigger +0.5;
 893     game.probex = game.quadrant.x*QUADSIZE + game.sector.x - 1; // We will use better packing than original
 894     game.probey = game.quadrant.y*QUADSIZE + game.sector.y - 1;
 895     game.probec = game.quadrant;
 896     schedule(FDSPROB, 0.01); // Time to move one sector
 897     prout("Ensign Chekov-  \"The deep space probe is launched, Captain.\"");
 898     game.ididit = 1;
 899     return;
 900 }
 901
 902 void mayday(void)
 903 {
 904     /* There's more than one way to move in this game! */
 905     double ddist, xdist, probf;
 906     int line = 0, l, ix, iy;
 907
 908     chew();
 909     /* Test for game.conditions which prevent calling for help */
 910     if (game.condit == IHDOCKED) {
 911         prout("Lt. Uhura-  \"But Captain, we're already docked.\"");
 912         return;
 913     }
 914     if (game.damage[DRADIO] != 0) {
 915         prout("Subspace radio damaged.");
 916         return;
 917     }
 918     if (game.state.rembase==0) {
 919         prout("Lt. Uhura-  \"Captain, I'm not getting any response from Starbase.\"");
 920         return;
 921     }
 922     if (game.landed == 1) {
 923         proutn("You must be aboard the ");
 924         crmshp();
 925         prout(".");
 926         return;
 927     }
 928     /* OK -- call for help from nearest starbase */
 929     game.nhelp++;
 930     if (game.base.x!=0) {
 931         /* There's one in this quadrant */
 932         ddist = sqrt(square(game.base.x-game.sector.x)+square(game.base.y-game.sector.y));
 933     }
 934     else {
 935         ddist = FOREVER;
 936         for_starbases(l) {
 937             xdist=10.0*sqrt(square(game.state.baseq[l].x-game.quadrant.x)+square(game.state.baseq[l].y-game.quadrant.y));
 938             if (xdist < ddist) {
 939                 ddist = xdist;
 940                 line = l;
 941             }
 942         }
 943         /* Since starbase not in quadrant, set up new quadrant */
 944         game.quadrant = game.state.baseq[line];
 945         newqad(1);
 946     }
 947     /* dematerialize starship */
 948     game.quad[game.sector.x][game.sector.y]=IHDOT;
 949     proutn("Starbase in %s responds--", cramlc(quadrant, game.quadrant));
 950     proutn("");
 951     crmshp();
 952     prout(" dematerializes.");
 953     game.sector.x=0;
 954     for (l = 1; l <= 5; l++) {
 955         ix = game.base.x+3.0*Rand()-1;
 956         iy = game.base.y+3.0*Rand()-1;
 957         if (VALID_SECTOR(ix,iy) && game.quad[ix][iy]==IHDOT) {
 958             /* found one -- finish up */
 959             game.sector.x=ix;
 960             game.sector.y=iy;
 961             break;
 962         }
 963     }
 964     if (game.sector.x==0){
 965         prout("You have been lost in space...");
 966         finish(FMATERIALIZE);
 967         return;
 968     }
 969     /* Give starbase three chances to rematerialize starship */
 970     probf = pow((1.0 - pow(0.98,ddist)), 0.33333333);
 971     for (l = 1; l <= 3; l++) {
 972         switch (l) {
 973         case 1: proutn("1st"); break;
 974         case 2: proutn("2nd"); break;
 975         case 3: proutn("3rd"); break;
 976         }
 977         proutn(" attempt to re-materialize ");
 978         crmshp();
 979         switch (l){
 980         case 1: game.quad[ix][iy]=IHMATER0;
 981             break;
 982         case 2: game.quad[ix][iy]=IHMATER1;
 983             break;
 984         case 3: game.quad[ix][iy]=IHMATER2;
 985             break;
 986         }
 987         textcolor(RED);
 988         warble();
 989         if (Rand() > probf) break;
 990         prout("fails.");
 991         delay(500);
 992         textcolor(DEFAULT);
 993     }
 994     if (l > 3) {
 995         game.quad[ix][iy]=IHQUEST;
 996         game.alive = 0;
 997         drawmaps(1);
 998         setwnd(message_window);
 999         finish(FMATERIALIZE);
1000         return;
1001     }
1002     game.quad[ix][iy]=game.ship;
1003     textcolor(GREEN);
1004     prout("succeeds.");
1005     textcolor(DEFAULT);
1006     dock(0);
1007     skip(1);
1008     prout("Lt. Uhura-  \"Captain, we made it!\"");
1009 }