actions.c

   1 #include <stdlib.h>
   2 #include <stdbool.h>
   3 #include <string.h>
   4 #include "advent.h"
   5 #include "dungeon.h"
   6
   7 static int fill(token_t, token_t);
   8
   9 static void state_change(long obj, long state)
  10 /* Object must have a change-message list for this to be useful; only some do */
  11 {
  12     game.prop[obj] = state;
  13     pspeak(obj, change, state, true);
  14 }
  15
  16 static int attack(struct command_t *command)
  17 /*  Attack.  Assume target if unambiguous.  "Throw" also links here.
  18  *  Attackable objects fall into two categories: enemies (snake,
  19  *  dwarf, etc.)  and others (bird, clam, machine).  Ambiguous if 2
  20  *  enemies, or no enemies but 2 others. */
  21 {
  22     vocab_t verb = command->verb;
  23     vocab_t obj = command->obj;
  24
  25     if (obj == NO_OBJECT ||
  26         obj == INTRANSITIVE) {
  27         int changes = 0;
  28         if (atdwrf(game.loc) > 0) {
  29             obj = DWARF;
  30             ++changes;
  31         }
  32         if (HERE(SNAKE)) {
  33             obj = SNAKE;
  34             ++changes;
  35         }
  36         if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
  37             obj = DRAGON;
  38             ++changes;
  39         }
  40         if (AT(TROLL)) {
  41             obj = TROLL;
  42             ++changes;
  43         }
  44         if (AT(OGRE)) {
  45             obj = OGRE;
  46             ++changes;
  47         }
  48         if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
  49             obj = BEAR;
  50             ++changes;
  51         }
  52         /* check for low-priority targets */
  53         if (obj == NO_OBJECT) {
  54             /* Can't attack bird or machine by throwing axe. */
  55             if (HERE(BIRD) && verb != THROW) {
  56                 obj = BIRD;
  57                 ++changes;
  58             }
  59             if (HERE(VEND) && verb != THROW) {
  60                 obj = VEND;
  61                 ++changes;
  62             }
  63             /* Clam and oyster both treated as clam for intransitive case;
  64              * no harm done. */
  65             if (HERE(CLAM) || HERE(OYSTER)) {
  66                 obj = CLAM;
  67                 ++changes;
  68             }
  69         }
  70         if (changes >= 2)
  71             return GO_UNKNOWN;
  72     }
  73
  74     if (obj == BIRD) {
  75         if (game.closed) {
  76             rspeak(UNHAPPY_BIRD);
  77         } else {
  78             DESTROY(BIRD);
  79             rspeak(BIRD_DEAD);
  80         }
  81         return GO_CLEAROBJ;
  82     }
  83     if (obj == VEND) {
  84         state_change(VEND,
  85                      game.prop[VEND] == VEND_BLOCKS ? VEND_UNBLOCKS : VEND_BLOCKS);
  86         return GO_CLEAROBJ;
  87     }
  88
  89     if (obj == BEAR) {
  90         switch (game.prop[BEAR]) {
  91         case UNTAMED_BEAR:
  92             rspeak(BEAR_HANDS);
  93             break;
  94         case SITTING_BEAR:
  95             rspeak(BEAR_CONFUSED);
  96             break;
  97         case CONTENTED_BEAR:
  98             rspeak(BEAR_CONFUSED);
  99             break;
 100         case BEAR_DEAD:
 101             rspeak(ALREADY_DEAD);
 102             break;
 103         }
 104         return GO_CLEAROBJ;
 105     }
 106     if (obj == DRAGON && game.prop[DRAGON] == DRAGON_BARS) {
 107         /*  Fun stuff for dragon.  If he insists on attacking it, win!
 108          *  Set game.prop to dead, move dragon to central loc (still
 109          *  fixed), move rug there (not fixed), and move him there,
 110          *  too.  Then do a null motion to get new description. */
 111         rspeak(BARE_HANDS_QUERY);
 112         if (silent_yes()) {
 113             // FIXME: setting wd1 is a workaround for broken logic
 114             command->wd1 = token_to_packed("Y");
 115         } else {
 116             // FIXME: setting wd1 is a workaround for broken logic
 117             command->wd1 = token_to_packed("N");
 118             return GO_CHECKFOO;
 119         }
 120         state_change(DRAGON, DRAGON_DEAD);
 121         game.prop[RUG] = RUG_FLOOR;
 122         /* FIXME: Arithmetic on location values */
 123         int k = (objects[DRAGON].plac + objects[DRAGON].fixd) / 2;
 124         move(DRAGON + NOBJECTS, -1);
 125         move(RUG + NOBJECTS, 0);
 126         move(DRAGON, k);
 127         move(RUG, k);
 128         drop(BLOOD, k);
 129         for (obj = 1; obj <= NOBJECTS; obj++) {
 130             if (game.place[obj] == objects[DRAGON].plac ||
 131                 game.place[obj] == objects[DRAGON].fixd)
 132                 move(obj, k);
 133         }
 134         game.loc = k;
 135         return GO_MOVE;
 136     }
 137
 138     if (obj == OGRE) {
 139         rspeak(OGRE_DODGE);
 140         if (atdwrf(game.loc) == 0)
 141             return GO_CLEAROBJ;
 142
 143         rspeak(KNIFE_THROWN);
 144         DESTROY(OGRE);
 145         int dwarves = 0;
 146         for (int i = 1; i < PIRATE; i++) {
 147             if (game.dloc[i] == game.loc) {
 148                 ++dwarves;
 149                 game.dloc[i] = LOC_LONGWEST;
 150                 game.dseen[i] = false;
 151             }
 152         }
 153         rspeak((dwarves > 1) ?
 154                OGRE_PANIC1 :
 155                OGRE_PANIC2);
 156         return GO_CLEAROBJ;
 157     }
 158
 159     switch (obj) {
 160     case NO_OBJECT:
 161         rspeak(NO_TARGET);
 162         break;
 163     case CLAM:
 164     case OYSTER:
 165         rspeak(SHELL_IMPERVIOUS);
 166         break;
 167     case SNAKE:
 168         rspeak(SNAKE_WARNING);
 169         break;
 170     case DWARF:
 171         if (game.closed) {
 172             return GO_DWARFWAKE;
 173         }
 174         rspeak(BARE_HANDS_QUERY);
 175         break;
 176     case DRAGON:
 177         rspeak(ALREADY_DEAD);
 178         break;
 179     case TROLL:
 180         rspeak(ROCKY_TROLL);
 181         break;
 182     default:
 183         rspeak(actions[verb].message);
 184     }
 185     return GO_CLEAROBJ;
 186 }
 187
 188 static int bigwords(token_t foo)
 189 /*  FEE FIE FOE FOO (AND FUM).  Advance to next state if given in proper order.
 190  *  Look up foo in special section of vocab to determine which word we've got.
 191  *  Last word zips the eggs back to the giant room (unless already there). */
 192 {
 193     char word[TOKLEN + 1];
 194     packed_to_token(foo, word);
 195     int k = (int) get_special_vocab_id(word);
 196     if (game.foobar != 1 - k) {
 197         if (game.foobar != 0 && game.loc == LOC_GIANTROOM) {
 198             rspeak( START_OVER);
 199         } else {
 200             rspeak(NOTHING_HAPPENS);
 201         }
 202         return GO_CLEAROBJ;
 203     } else {
 204         game.foobar = k;
 205         if (k != 4) {
 206             rspeak(OK_MAN);
 207             return GO_CLEAROBJ;
 208         }
 209         game.foobar = 0;
 210         if (game.place[EGGS] == objects[EGGS].plac ||
 211             (TOTING(EGGS) && game.loc == objects[EGGS].plac)) {
 212             rspeak(NOTHING_HAPPENS);
 213             return GO_CLEAROBJ;
 214         } else {
 215             /*  Bring back troll if we steal the eggs back from him before
 216              *  crossing. */
 217             if (game.place[EGGS] == LOC_NOWHERE && game.place[TROLL] == LOC_NOWHERE && game.prop[TROLL] == TROLL_UNPAID)
 218                 game.prop[TROLL] = TROLL_PAIDONCE;
 219             k = EGGS_DONE;
 220             if (HERE(EGGS))
 221                 k = EGGS_VANISHED;
 222             if (game.loc == objects[EGGS].plac)
 223                 k = EGGS_HERE;
 224             move(EGGS, objects[EGGS].plac);
 225             pspeak(EGGS, look, k, true);
 226             return GO_CLEAROBJ;
 227         }
 228     }
 229 }
 230
 231 static void blast(void)
 232 /*  Blast.  No effect unless you've got dynamite, which is a neat trick! */
 233 {
 234     if (game.prop[ROD2] < 0 ||
 235         !game.closed)
 236         rspeak(REQUIRES_DYNAMITE);
 237     else {
 238         game.bonus = VICTORY_MESSAGE;
 239         if (game.loc == LOC_NE)
 240             game.bonus = DEFEAT_MESSAGE;
 241         if (HERE(ROD2))
 242             game.bonus = SPLATTER_MESSAGE;
 243         rspeak(game.bonus);
 244         terminate(endgame);
 245     }
 246 }
 247
 248 static int vbreak(token_t verb, token_t obj)
 249 /*  Break.  Only works for mirror in repository and, of course, the vase. */
 250 {
 251     if (obj == MIRROR) {
 252         if (game.closed) {
 253             rspeak(BREAK_MIRROR);
 254             return GO_DWARFWAKE;
 255         } else {
 256             rspeak(TOO_FAR);
 257             return GO_CLEAROBJ;
 258         }
 259     }
 260     if (obj == VASE && game.prop[VASE] == VASE_WHOLE) {
 261         if (TOTING(VASE))
 262             drop(VASE, game.loc);
 263         state_change(VASE, VASE_BROKEN);
 264         game.fixed[VASE] = IS_FIXED;
 265         return GO_CLEAROBJ;
 266     }
 267     rspeak(actions[verb].message);
 268     return (GO_CLEAROBJ);
 269 }
 270
 271 static int brief(void)
 272 /*  Brief.  Intransitive only.  Suppress long descriptions after first time. */
 273 {
 274     game.abbnum = 10000;
 275     game.detail = 3;
 276     rspeak(BRIEF_CONFIRM);
 277     return GO_CLEAROBJ;
 278 }
 279
 280 static int vcarry(token_t verb, token_t obj)
 281 /*  Carry an object.  Special cases for bird and cage (if bird in cage, can't
 282  *  take one without the other).  Liquids also special, since they depend on
 283  *  status of bottle.  Also various side effects, etc. */
 284 {
 285     if (obj == INTRANSITIVE) {
 286         /*  Carry, no object given yet.  OK if only one object present. */
 287         if (game.atloc[game.loc] == 0 ||
 288             game.link[game.atloc[game.loc]] != 0 ||
 289             atdwrf(game.loc) > 0)
 290             return GO_UNKNOWN;
 291         obj = game.atloc[game.loc];
 292     }
 293
 294     if (TOTING(obj)) {
 295         rspeak(ALREADY_CARRYING);
 296         return GO_CLEAROBJ;
 297     }
 298
 299     if (obj == MESSAG) {
 300         rspeak(REMOVE_MESSAGE);
 301         DESTROY(MESSAG);
 302         return GO_CLEAROBJ;
 303     }
 304
 305     if (game.fixed[obj] != IS_FREE) {
 306         /* Next guard tests whether plant is tiny or stashed */
 307         if (obj == PLANT && game.prop[PLANT] <= PLANT_THIRSTY) {
 308             rspeak(DEEP_ROOTS);
 309             return GO_CLEAROBJ;
 310         }
 311         if (obj == BEAR && game.prop[BEAR] == SITTING_BEAR) {
 312             rspeak(BEAR_CHAINED);
 313             return GO_CLEAROBJ;
 314         }
 315         if (obj == CHAIN && game.prop[BEAR] != UNTAMED_BEAR) {
 316             rspeak(STILL_LOCKED);
 317             return GO_CLEAROBJ;
 318         }
 319         if (obj == URN) {
 320             rspeak(URN_NOBUDGE);
 321             return GO_CLEAROBJ;
 322         }
 323         if (obj == CAVITY) {
 324             rspeak(DOUGHNUT_HOLES);
 325             return GO_CLEAROBJ;
 326         }
 327         if (obj == BLOOD) {
 328             rspeak(FEW_DROPS);
 329             return GO_CLEAROBJ;
 330         }
 331         if (obj == RUG && game.prop[RUG] == RUG_HOVER) {
 332             rspeak(RUG_HOVERS);
 333             return GO_CLEAROBJ;
 334         }
 335         if (obj == SIGN) {
 336             rspeak(HAND_PASSTHROUGH);
 337             return GO_CLEAROBJ;
 338         }
 339         rspeak(YOU_JOKING);
 340         return GO_CLEAROBJ;
 341     }
 342
 343     if (obj == WATER ||
 344         obj == OIL) {
 345         if (!HERE(BOTTLE) ||
 346             LIQUID() != obj) {
 347             if (TOTING(BOTTLE)) {
 348                 if (game.prop[BOTTLE] == EMPTY_BOTTLE) {
 349                     return (fill(verb, BOTTLE));
 350                 } else if (game.prop[BOTTLE] != EMPTY_BOTTLE)
 351                     rspeak(BOTTLE_FULL);
 352                 return GO_CLEAROBJ;
 353             }
 354             rspeak(NO_CONTAINER);
 355             return GO_CLEAROBJ;
 356         }
 357         obj = BOTTLE;
 358     }
 359
 360     if (game.holdng >= INVLIMIT) {
 361         rspeak(CARRY_LIMIT);
 362         return GO_CLEAROBJ;
 363
 364     }
 365
 366     if (obj == BIRD && game.prop[BIRD] != BIRD_CAGED && STASHED(BIRD) != BIRD_CAGED) {
 367         if (game.prop[BIRD] == BIRD_FOREST_UNCAGED) {
 368             DESTROY(BIRD);
 369             rspeak(BIRD_CRAP);
 370             return GO_CLEAROBJ;
 371         }
 372         if (!TOTING(CAGE)) {
 373             rspeak(CANNOT_CARRY);
 374             return GO_CLEAROBJ;
 375         }
 376         if (TOTING(ROD)) {
 377             rspeak(BIRD_EVADES);
 378             return GO_CLEAROBJ;
 379         }
 380         game.prop[BIRD] = BIRD_CAGED;
 381     }
 382     if ((obj == BIRD ||
 383          obj == CAGE) &&
 384         (game.prop[BIRD] == BIRD_CAGED || STASHED(BIRD) == BIRD_CAGED))
 385         /* expression maps BIRD to CAGE and CAGE to BIRD */
 386         carry(BIRD + CAGE - obj, game.loc);
 387     carry(obj, game.loc);
 388     if (obj == BOTTLE && LIQUID() != NO_OBJECT)
 389         game.place[LIQUID()] = CARRIED;
 390     if (GSTONE(obj) && game.prop[obj] != STATE_FOUND) {
 391         game.prop[obj] = STATE_FOUND;
 392         game.prop[CAVITY] = CAVITY_EMPTY;
 393     }
 394     rspeak(OK_MAN);
 395     return GO_CLEAROBJ;
 396 }
 397
 398 static int chain(token_t verb)
 399 /* Do something to the bear's chain */
 400 {
 401     if (verb != LOCK) {
 402         if (game.prop[BEAR] == UNTAMED_BEAR) {
 403             rspeak(BEAR_BLOCKS);
 404             return GO_CLEAROBJ;
 405         }
 406         if (game.prop[CHAIN] == CHAIN_HEAP) {
 407             rspeak(ALREADY_UNLOCKED);
 408             return GO_CLEAROBJ;
 409         }
 410         game.prop[CHAIN] = CHAIN_HEAP;
 411         game.fixed[CHAIN] = IS_FREE;
 412         if (game.prop[BEAR] != BEAR_DEAD)
 413             game.prop[BEAR] = CONTENTED_BEAR;
 414
 415         switch (game.prop[BEAR]) {
 416         case BEAR_DEAD:
 417             game.fixed[BEAR] = IS_FIXED;
 418             break;
 419         default:
 420             game.fixed[BEAR] = IS_FREE;
 421         }
 422         rspeak(CHAIN_UNLOCKED);
 423         return GO_CLEAROBJ;
 424     }
 425
 426     if (game.prop[CHAIN] != CHAIN_HEAP) {
 427         rspeak(ALREADY_LOCKED);
 428         return GO_CLEAROBJ;
 429     }
 430     if (game.loc != objects[CHAIN].plac) {
 431         rspeak(NO_LOCKSITE);
 432         return GO_CLEAROBJ;
 433     }
 434
 435     game.prop[CHAIN] = CHAIN_FIXED;
 436
 437     if (TOTING(CHAIN))
 438         drop(CHAIN, game.loc);
 439     game.fixed[CHAIN] = IS_FIXED;
 440
 441     rspeak(CHAIN_LOCKED);
 442     return GO_CLEAROBJ;
 443 }
 444
 445 static int discard(token_t verb, token_t obj, bool just_do_it)
 446 /*  Discard object.  "Throw" also comes here for most objects.  Special cases for
 447  *  bird (might attack snake or dragon) and cage (might contain bird) and vase.
 448  *  Drop coins at vending machine for extra batteries. */
 449 {
 450     if (!just_do_it) {
 451         if (TOTING(ROD2) && obj == ROD && !TOTING(ROD))
 452             obj = ROD2;
 453         if (!TOTING(obj)) {
 454             rspeak(actions[verb].message);
 455             return GO_CLEAROBJ;
 456         }
 457         if (obj == BIRD && HERE(SNAKE)) {
 458             rspeak(BIRD_ATTACKS);
 459             if (game.closed)
 460                 return GO_DWARFWAKE;
 461             DESTROY(SNAKE);
 462             /* Set game.prop for use by travel options */
 463             game.prop[SNAKE] = SNAKE_CHASED;
 464
 465         } else if ((GSTONE(obj) && AT(CAVITY) && game.prop[CAVITY] != CAVITY_FULL)) {
 466             rspeak(GEM_FITS);
 467             game.prop[obj] = STATE_IN_CAVITY;
 468             game.prop[CAVITY] = CAVITY_FULL;
 469             if (HERE(RUG) && ((obj == EMERALD && game.prop[RUG] != RUG_HOVER) ||
 470                               (obj == RUBY && game.prop[RUG] == RUG_HOVER))) {
 471                 int spk = RUG_RISES;
 472                 if (TOTING(RUG))
 473                     spk = RUG_WIGGLES;
 474                 if (obj == RUBY)
 475                     spk = RUG_SETTLES;
 476                 rspeak(spk);
 477                 if (spk != RUG_WIGGLES) {
 478                     /* FIXME: Arithmetic on state numbers */
 479                     int k = 2 - game.prop[RUG];
 480                     game.prop[RUG] = k;
 481                     if (k == RUG_HOVER)
 482                         k = objects[SAPPH].plac;
 483                     move(RUG + NOBJECTS, k);
 484                 }
 485             }
 486         } else if (obj == COINS && HERE(VEND)) {
 487             DESTROY(COINS);
 488             drop(BATTERY, game.loc);
 489             pspeak(BATTERY, look, FRESH_BATTERIES, true);
 490             return GO_CLEAROBJ;
 491         } else if (obj == BIRD && AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
 492             rspeak(BIRD_BURNT);
 493             DESTROY(BIRD);
 494             return GO_CLEAROBJ;
 495         } else if (obj == BEAR && AT(TROLL)) {
 496             state_change(TROLL, TROLL_GONE);
 497             move(TROLL, LOC_NOWHERE);
 498             move(TROLL + NOBJECTS, LOC_NOWHERE);
 499             move(TROLL2, objects[TROLL].plac);
 500             move(TROLL2 + NOBJECTS, objects[TROLL].fixd);
 501             juggle(CHASM);
 502         } else if (obj != VASE ||
 503                    game.loc == objects[PILLOW].plac) {
 504             rspeak(OK_MAN);
 505         } else {
 506             state_change(VASE, AT(PILLOW)
 507                          ? VASE_WHOLE
 508                          : VASE_DROPPED);
 509             if (game.prop[VASE] != VASE_WHOLE)
 510                 game.fixed[VASE] = IS_FIXED;
 511         }
 512     }
 513     int k = LIQUID();
 514     if (k == obj)
 515         obj = BOTTLE;
 516     if (obj == BOTTLE && k != NO_OBJECT)
 517         game.place[k] = LOC_NOWHERE;
 518     if (obj == CAGE && game.prop[BIRD] == BIRD_CAGED)
 519         drop(BIRD, game.loc);
 520     drop(obj, game.loc);
 521     if (obj != BIRD)
 522         return GO_CLEAROBJ;
 523     game.prop[BIRD] = BIRD_UNCAGED;
 524     if (FOREST(game.loc))
 525         game.prop[BIRD] = BIRD_FOREST_UNCAGED;
 526     return GO_CLEAROBJ;
 527 }
 528
 529 static int drink(token_t verb, token_t obj)
 530 /*  Drink.  If no object, assume water and look for it here.  If water is in
 531  *  the bottle, drink that, else must be at a water loc, so drink stream. */
 532 {
 533     if (obj == NO_OBJECT && LIQLOC(game.loc) != WATER &&
 534         (LIQUID() != WATER || !HERE(BOTTLE))) {
 535         return GO_UNKNOWN;
 536     }
 537
 538     if (obj == BLOOD) {
 539         DESTROY(BLOOD);
 540         state_change(DRAGON, DRAGON_BLOODLESS);
 541         game.blooded = true;
 542         return GO_CLEAROBJ;
 543     }
 544
 545     if (obj != NO_OBJECT && obj != WATER) {
 546         rspeak(RIDICULOUS_ATTEMPT);
 547         return GO_CLEAROBJ;
 548     }
 549     if (LIQUID() == WATER && HERE(BOTTLE)) {
 550         game.place[WATER] = LOC_NOWHERE;
 551         state_change(BOTTLE, EMPTY_BOTTLE);
 552         return GO_CLEAROBJ;
 553     }
 554
 555     rspeak(actions[verb].message);
 556     return GO_CLEAROBJ;
 557 }
 558
 559 static int eat(token_t verb, token_t obj)
 560 /*  Eat.  Intransitive: assume food if present, else ask what.  Transitive: food
 561  *  ok, some things lose appetite, rest are ridiculous. */
 562 {
 563     if (obj == INTRANSITIVE) {
 564         if (!HERE(FOOD))
 565             return GO_UNKNOWN;
 566         DESTROY(FOOD);
 567         rspeak(THANKS_DELICIOUS);
 568         return GO_CLEAROBJ;
 569     }
 570     if (obj == FOOD) {
 571         DESTROY(FOOD);
 572         rspeak(THANKS_DELICIOUS);
 573         return GO_CLEAROBJ;
 574     }
 575     if (obj == BIRD ||
 576         obj == SNAKE ||
 577         obj == CLAM ||
 578         obj == OYSTER ||
 579         obj == DWARF ||
 580         obj == DRAGON ||
 581         obj == TROLL ||
 582         obj == BEAR ||
 583         obj == OGRE) {
 584         rspeak(LOST_APPETITE);
 585         return GO_CLEAROBJ;
 586     }
 587     rspeak(actions[verb].message);
 588     return GO_CLEAROBJ;
 589 }
 590
 591 static int extinguish(token_t verb, int obj)
 592 /* Extinguish.  Lamp, urn, dragon/volcano (nice try). */
 593 {
 594     if (obj == INTRANSITIVE) {
 595         if (HERE(LAMP) && game.prop[LAMP] == LAMP_BRIGHT)
 596             obj = LAMP;
 597         if (HERE(URN) && game.prop[URN] == URN_LIT)
 598             obj = URN;
 599         if (obj == INTRANSITIVE)
 600             return GO_UNKNOWN;
 601     }
 602
 603     if (obj == URN) {
 604         if (game.prop[URN] != URN_EMPTY) {
 605             state_change(URN, URN_DARK);
 606         } else {
 607             pspeak(URN, change, URN_DARK, true);
 608         }
 609         return GO_CLEAROBJ;
 610     }
 611
 612     if (obj == LAMP) {
 613         state_change(LAMP, LAMP_DARK);
 614         rspeak(DARK(game.loc) ?
 615                PITCH_DARK :
 616                NO_MESSAGE);
 617         return GO_CLEAROBJ;
 618     }
 619
 620     if (obj == DRAGON ||
 621         obj == VOLCANO) {
 622         rspeak(BEYOND_POWER);
 623         return GO_CLEAROBJ;
 624     }
 625
 626     rspeak(actions[verb].message);
 627     return GO_CLEAROBJ;
 628 }
 629
 630 static int feed(token_t verb, token_t obj)
 631 /*  Feed.  If bird, no seed.  Snake, dragon, troll: quip.  If dwarf, make him
 632  *  mad.  Bear, special. */
 633 {
 634     int spk = actions[verb].message;
 635     if (obj == BIRD) {
 636         rspeak(BIRD_PINING);
 637         return GO_CLEAROBJ;
 638     } else if (obj == SNAKE ||
 639                obj == DRAGON ||
 640                obj == TROLL) {
 641         spk = NOTHING_EDIBLE;
 642         if (obj == DRAGON && game.prop[DRAGON] != DRAGON_BARS)
 643             spk = RIDICULOUS_ATTEMPT;
 644         if (obj == TROLL)
 645             spk = TROLL_VICES;
 646         if (obj == SNAKE && !game.closed && HERE(BIRD)) {
 647             DESTROY(BIRD);
 648             spk = BIRD_DEVOURED;
 649         }
 650     } else if (obj == DWARF) {
 651         if (HERE(FOOD)) {
 652             game.dflag += 2;
 653             spk = REALLY_MAD;
 654         }
 655     } else if (obj == BEAR) {
 656         if (game.prop[BEAR] == UNTAMED_BEAR)
 657             spk = NOTHING_EDIBLE;
 658         if (game.prop[BEAR] == BEAR_DEAD)
 659             spk = RIDICULOUS_ATTEMPT;
 660         if (HERE(FOOD)) {
 661             DESTROY(FOOD);
 662             game.prop[BEAR] = SITTING_BEAR;
 663             game.fixed[AXE] = IS_FREE;
 664             game.prop[AXE] = AXE_HERE;
 665             spk = BEAR_TAMED;
 666         }
 667     } else if (obj == OGRE) {
 668         if (HERE(FOOD))
 669             spk = OGRE_FULL;
 670     } else {
 671         spk = AM_GAME;
 672     }
 673     rspeak(spk);
 674     return GO_CLEAROBJ;
 675 }
 676
 677 int fill(token_t verb, token_t obj)
 678 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 679  *  is nasty.) */
 680 {
 681     if (obj == VASE) {
 682         if (LIQLOC(game.loc) == NO_OBJECT) {
 683             rspeak(FILL_INVALID);
 684             return GO_CLEAROBJ;
 685         }
 686         if (!TOTING(VASE)) {
 687             rspeak(ARENT_CARRYING);
 688             return GO_CLEAROBJ;
 689         }
 690         rspeak(SHATTER_VASE);
 691         game.prop[VASE] = VASE_BROKEN;
 692         game.fixed[VASE] = IS_FIXED;
 693         return (discard(verb, VASE, true));
 694     }
 695
 696     if (obj == URN) {
 697         if (game.prop[URN] != URN_EMPTY) {
 698             rspeak(FULL_URN);
 699             return GO_CLEAROBJ;
 700         }
 701         if (!HERE(BOTTLE)) {
 702             rspeak(FILL_INVALID);
 703             return GO_CLEAROBJ;
 704         }
 705         int k = LIQUID();
 706         switch (k) {
 707         case WATER:
 708             game.prop[BOTTLE] = EMPTY_BOTTLE;
 709             rspeak(WATER_URN);
 710             break;
 711         case OIL:
 712             game.prop[URN] = URN_DARK;
 713             game.prop[BOTTLE] = EMPTY_BOTTLE;
 714             rspeak(OIL_URN);
 715             break;
 716         case NO_OBJECT:
 717         default:
 718             rspeak(FILL_INVALID);
 719             return GO_CLEAROBJ;
 720         }
 721         game.place[k] = LOC_NOWHERE;
 722         return GO_CLEAROBJ;
 723     }
 724     if (obj != NO_OBJECT && obj != BOTTLE) {
 725         rspeak(actions[verb].message);
 726         return GO_CLEAROBJ;
 727     }
 728     if (obj == NO_OBJECT && !HERE(BOTTLE))
 729         return GO_UNKNOWN;
 730
 731     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 732         rspeak(URN_NOPOUR);
 733         return GO_CLEAROBJ;
 734     }
 735     if (LIQUID() != NO_OBJECT) {
 736         rspeak(BOTTLE_FULL);
 737         return GO_CLEAROBJ;
 738     }
 739     if (LIQLOC(game.loc) == NO_OBJECT) {
 740         rspeak(NO_LIQUID);
 741         return GO_CLEAROBJ;
 742     }
 743
 744     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 745                  ? OIL_BOTTLE
 746                  : WATER_BOTTLE);
 747     if (TOTING(BOTTLE))
 748         game.place[LIQUID()] = CARRIED;
 749     return GO_CLEAROBJ;
 750 }
 751
 752 static int find(token_t verb, token_t obj)
 753 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 754 {
 755     if (TOTING(obj)) {
 756         rspeak(ALREADY_CARRYING);
 757         return GO_CLEAROBJ;
 758     }
 759
 760     if (game.closed) {
 761         rspeak(NEEDED_NEARBY);
 762         return GO_CLEAROBJ;
 763     }
 764
 765     if (AT(obj) ||
 766         (LIQUID() == obj && AT(BOTTLE)) ||
 767         obj == LIQLOC(game.loc) ||
 768         (obj == DWARF && atdwrf(game.loc) > 0)) {
 769         rspeak(YOU_HAVEIT);
 770         return GO_CLEAROBJ;
 771     }
 772
 773
 774     rspeak(actions[verb].message);
 775     return GO_CLEAROBJ;
 776 }
 777
 778 static int fly(token_t verb, token_t obj)
 779 /* Fly.  Snide remarks unless hovering rug is here. */
 780 {
 781     if (obj == INTRANSITIVE) {
 782         if (!HERE(RUG)) {
 783             rspeak(FLAP_ARMS);
 784             return GO_CLEAROBJ;
 785         }
 786         if (game.prop[RUG] != RUG_HOVER) {
 787             rspeak(RUG_NOTHING2);
 788             return GO_CLEAROBJ;
 789         }
 790         obj = RUG;
 791     }
 792
 793     if (obj != RUG) {
 794         rspeak(actions[verb].message);
 795         return GO_CLEAROBJ;
 796     }
 797     if (game.prop[RUG] != RUG_HOVER) {
 798         rspeak(RUG_NOTHING1);
 799         return GO_CLEAROBJ;
 800     }
 801     game.oldlc2 = game.oldloc;
 802     game.oldloc = game.loc;
 803     /* FIXME: Arithmetic on location values */
 804     game.newloc = game.place[RUG] + game.fixed[RUG] - game.loc;
 805
 806     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 807         rspeak(RUG_GOES);
 808     } else {
 809         rspeak(RUG_RETURNS);
 810     }
 811     return GO_TERMINATE;
 812 }
 813
 814 static int inven(void)
 815 /* Inventory. If object, treat same as find.  Else report on current burden. */
 816 {
 817     bool empty = true;
 818     for (int i = 1; i <= NOBJECTS; i++) {
 819         if (i == BEAR ||
 820             !TOTING(i))
 821             continue;
 822         if (empty) {
 823             rspeak(NOW_HOLDING);
 824             empty = false;
 825         }
 826         pspeak(i, touch, -1, false);
 827     }
 828     if (TOTING(BEAR))
 829         rspeak(TAME_BEAR);
 830     if (empty)
 831         rspeak(NO_CARRY);
 832     return GO_CLEAROBJ;
 833 }
 834
 835 static int light(token_t verb, token_t obj)
 836 /*  Light.  Applicable only to lamp and urn. */
 837 {
 838     if (obj == INTRANSITIVE) {
 839         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0)
 840             obj = LAMP;
 841         if (HERE(URN) && game.prop[URN] == URN_DARK)
 842             obj =  URN;
 843         if (obj == INTRANSITIVE ||
 844             (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0 &&
 845              HERE(URN) && game.prop[URN] == URN_DARK))
 846             return GO_UNKNOWN;
 847     }
 848
 849     if (obj == URN) {
 850         state_change(URN, game.prop[URN] == URN_EMPTY ?
 851                      URN_EMPTY :
 852                      URN_LIT);
 853         return GO_CLEAROBJ;
 854     } else {
 855         if (obj != LAMP) {
 856             rspeak(actions[verb].message);
 857             return GO_CLEAROBJ;
 858         }
 859         if (game.limit < 0) {
 860             rspeak(LAMP_OUT);
 861             return GO_CLEAROBJ;
 862         }
 863         state_change(LAMP, LAMP_BRIGHT);
 864         if (game.wzdark)
 865             return GO_TOP;
 866         else
 867             return GO_CLEAROBJ;
 868     }
 869 }
 870
 871 static int listen(void)
 872 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 873 {
 874     long sound = locations[game.loc].sound;
 875     if (sound != SILENT) {
 876         rspeak(sound);
 877         if (!locations[game.loc].loud)
 878             rspeak(NO_MESSAGE);
 879         return GO_CLEAROBJ;
 880     }
 881     for (int i = 1; i <= NOBJECTS; i++) {
 882         if (!HERE(i) ||
 883             objects[i].sounds[0] == NULL ||
 884             game.prop[i] < 0)
 885             continue;
 886         int mi =  game.prop[i];
 887         if (i == BIRD)
 888             mi += 3 * game.blooded;
 889         long packed_zzword = token_to_packed(game.zzword);
 890         pspeak(i, hear, mi, true, packed_zzword);
 891         rspeak(NO_MESSAGE);
 892         /* FIXME: Magic number, sensitive to bird state logic */
 893         if (i == BIRD && game.prop[i] == 5)
 894             DESTROY(BIRD);
 895         return GO_CLEAROBJ;
 896     }
 897     rspeak(ALL_SILENT);
 898     return GO_CLEAROBJ;
 899 }
 900
 901 static int lock(token_t verb, token_t obj)
 902 /* Lock, unlock, no object given.  Assume various things if present. */
 903 {
 904     if (obj == INTRANSITIVE) {
 905         if (HERE(CLAM))
 906             obj = CLAM;
 907         if (HERE(OYSTER))
 908             obj = OYSTER;
 909         if (AT(DOOR))
 910             obj = DOOR;
 911         if (AT(GRATE))
 912             obj = GRATE;
 913         if (HERE(CHAIN))
 914             obj = CHAIN;
 915         if (obj == INTRANSITIVE) {
 916             rspeak(NOTHING_LOCKED);
 917             return GO_CLEAROBJ;
 918         }
 919     }
 920
 921     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 922      *  and for chain. */
 923     if (obj == GRATE ||
 924         obj == CHAIN) {
 925         if (HERE(KEYS)) {
 926             if (obj == CHAIN)
 927                 return chain(verb);
 928             if (game.closng) {
 929                 rspeak(EXIT_CLOSED);
 930                 if (!game.panic)
 931                     game.clock2 = PANICTIME;
 932                 game.panic = true;
 933                 return GO_CLEAROBJ ;
 934             } else {
 935                 state_change(GRATE, (verb == LOCK) ?
 936                              GRATE_CLOSED :
 937                              GRATE_OPEN);
 938                 return GO_CLEAROBJ;
 939             }
 940         }
 941         rspeak(NO_KEYS);
 942         return GO_CLEAROBJ;
 943     }
 944
 945     switch (obj) {
 946     case CLAM:
 947         if (verb == LOCK)
 948             rspeak(HUH_MAN);
 949         else if (!TOTING(TRIDENT))
 950             rspeak(OYSTER_OPENER);
 951         else {
 952             DESTROY(CLAM);
 953             drop(OYSTER, game.loc);
 954             drop(PEARL, LOC_CULDESAC);
 955             rspeak(PEARL_FALLS);
 956         }
 957         return GO_CLEAROBJ;
 958     case OYSTER:
 959         if (verb == LOCK)
 960             rspeak(HUH_MAN);
 961         else
 962             rspeak(OYSTER_OPENER);
 963
 964         return GO_CLEAROBJ;
 965     case DOOR:
 966         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
 967         break;
 968     case CAGE:
 969         rspeak( NO_LOCK);
 970         break;
 971     case KEYS:
 972         rspeak(CANNOT_UNLOCK);
 973         break;
 974     default:
 975         rspeak(actions[verb].message);
 976     }
 977
 978     return GO_CLEAROBJ;
 979 }
 980
 981 static int pour(token_t verb, token_t obj)
 982 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
 983  *  special tests for pouring water or oil on plant or rusty door. */
 984 {
 985     if (obj == BOTTLE ||
 986         obj == NO_OBJECT)
 987         obj = LIQUID();
 988     if (obj == NO_OBJECT)
 989         return GO_UNKNOWN;
 990     if (!TOTING(obj)) {
 991         rspeak(actions[verb].message);
 992         return GO_CLEAROBJ;
 993     }
 994
 995     if (obj != OIL && obj != WATER) {
 996         rspeak(CANT_POUR);
 997         return GO_CLEAROBJ;
 998     }
 999     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1000         return fill(verb, URN);
1001     game.prop[BOTTLE] = EMPTY_BOTTLE;
1002     game.place[obj] = LOC_NOWHERE;
1003     if (!(AT(PLANT) ||
1004           AT(DOOR))) {
1005         rspeak(GROUND_WET);
1006         return GO_CLEAROBJ;
1007     }
1008     if (!AT(DOOR)) {
1009         if (obj == WATER) {
1010             /* cycle through the three plant states */
1011             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1012             game.prop[PLANT2] = game.prop[PLANT];
1013             return GO_MOVE;
1014         } else {
1015             rspeak(SHAKING_LEAVES);
1016             return GO_CLEAROBJ;
1017         }
1018     } else {
1019         state_change(DOOR, (obj == OIL) ?
1020                      DOOR_UNRUSTED :
1021                      DOOR_RUSTED);
1022         return GO_CLEAROBJ;
1023     }
1024 }
1025
1026 static int quit(void)
1027 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1028 {
1029     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1030         terminate(quitgame);
1031     return GO_CLEAROBJ;
1032 }
1033
1034 static int read(struct command_t command)
1035 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1036 {
1037     if (command.obj == INTRANSITIVE) {
1038         command.obj = 0;
1039         for (int i = 1; i <= NOBJECTS; i++) {
1040             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1041                 command.obj = command.obj * NOBJECTS + i;
1042         }
1043         if (command.obj > NOBJECTS ||
1044             command.obj == 0 ||
1045             DARK(game.loc))
1046             return GO_UNKNOWN;
1047     }
1048
1049     if (DARK(game.loc)) {
1050         sspeak(NO_SEE, command.raw1);
1051     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1052         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1053     } else if (objects[command.obj].texts[0] == NULL ||
1054                game.prop[command.obj] < 0) {
1055         rspeak(actions[command.verb].message);
1056     } else
1057         pspeak(command.obj, study, game.prop[command.obj], true);
1058     return GO_CLEAROBJ;
1059 }
1060
1061 static int reservoir(void)
1062 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1063 {
1064     /* FIXME: Arithmetic on state numbers */
1065     if (!AT(RESER) && game.loc != game.fixed[RESER] - 1) {
1066         rspeak(NOTHING_HAPPENS);
1067         return GO_CLEAROBJ;
1068     } else {
1069         state_change(RESER,
1070                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1071         if (AT(RESER))
1072             return GO_CLEAROBJ;
1073         else {
1074             game.oldlc2 = game.loc;
1075             game.newloc = LOC_NOWHERE;
1076             rspeak(NOT_BRIGHT);
1077             return GO_TERMINATE;
1078         }
1079     }
1080 }
1081
1082 static int rub(token_t verb, token_t obj)
1083 /* Rub.  Yields various snide remarks except for lit urn. */
1084 {
1085     if (obj == URN && game.prop[URN] == URN_LIT) {
1086         DESTROY(URN);
1087         drop(AMBER, game.loc);
1088         game.prop[AMBER] = AMBER_IN_ROCK;
1089         --game.tally;
1090         drop(CAVITY, game.loc);
1091         rspeak(URN_GENIES);
1092     } else if (obj != LAMP) {
1093         rspeak(PECULIAR_NOTHING);
1094     } else {
1095         rspeak(actions[verb].message);
1096     }
1097     return GO_CLEAROBJ;
1098 }
1099
1100 static int say(struct command_t *command)
1101 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1102 {
1103     if (command->wd2 > 0) {
1104         command->wd1 = command->wd2;
1105         strcpy(command->raw1, command->raw2);
1106     }
1107     char word1[TOKLEN + 1];
1108     packed_to_token(command->wd1, word1);
1109     int wd = (int) get_vocab_id(word1);
1110     if (wd == MOTION_WORD(XYZZY) ||
1111         wd == MOTION_WORD(PLUGH) ||
1112         wd == MOTION_WORD(PLOVER) ||
1113         wd == ACTION_WORD(GIANTWORDS) ||
1114         wd == ACTION_WORD(PART)) {
1115         /* FIXME: scribbles on the interpreter's command block */
1116         wordclear(&command->wd2);
1117         return GO_LOOKUP;
1118     }
1119     sspeak(OKEY_DOKEY, command->raw1);
1120     return GO_CLEAROBJ;
1121 }
1122
1123 static int throw_support(long spk)
1124 {
1125     rspeak(spk);
1126     drop(AXE, game.loc);
1127     return GO_MOVE;
1128 }
1129
1130 static int throw (struct command_t *command)
1131 /*  Throw.  Same as discard unless axe.  Then same as attack except
1132  *  ignore bird, and if dwarf is present then one might be killed.
1133  *  (Only way to do so!)  Axe also special for dragon, bear, and
1134  *  troll.  Treasures special for troll. */
1135 {
1136     if (!TOTING(command->obj)) {
1137         rspeak(actions[command->verb].message);
1138         return GO_CLEAROBJ;
1139     }
1140     if (objects[command->obj].is_treasure && AT(TROLL)) {
1141         /*  Snarf a treasure for the troll. */
1142         drop(command->obj, LOC_NOWHERE);
1143         move(TROLL, LOC_NOWHERE);
1144         move(TROLL + NOBJECTS, LOC_NOWHERE);
1145         drop(TROLL2, objects[TROLL].plac);
1146         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1147         juggle(CHASM);
1148         rspeak(TROLL_SATISFIED);
1149         return GO_CLEAROBJ;
1150     }
1151     if (command->obj == FOOD && HERE(BEAR)) {
1152         /* But throwing food is another story. */
1153         command->obj = BEAR;
1154         return (feed(command->verb, command->obj));
1155     }
1156     if (command->obj != AXE)
1157         return (discard(command->verb, command->obj, false));
1158     else {
1159         if (atdwrf(game.loc) <= 0) {
1160             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1161                 return throw_support(DRAGON_SCALES);
1162             if (AT(TROLL))
1163                 return throw_support(TROLL_RETURNS);
1164             else if (AT(OGRE))
1165                 return throw_support(OGRE_DODGE);
1166             else if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1167                 /* This'll teach him to throw the axe at the bear! */
1168                 drop(AXE, game.loc);
1169                 game.fixed[AXE] = IS_FIXED;
1170                 juggle(BEAR);
1171                 state_change(AXE, AXE_LOST);
1172                 return GO_CLEAROBJ;
1173             }
1174             command->obj = NO_OBJECT;
1175             return (attack(command));
1176         }
1177
1178         if (randrange(NDWARVES + 1) < game.dflag) {
1179             return throw_support(DWARF_DODGES);
1180         } else {
1181             long i = atdwrf(game.loc);
1182             game.dseen[i] = false;
1183             game.dloc[i] = LOC_NOWHERE;
1184             return throw_support((++game.dkill == 1) ?
1185                                  DWARF_SMOKE :
1186                                  KILLED_DWARF);
1187         }
1188     }
1189 }
1190
1191 static int wake(token_t verb, token_t obj)
1192 /* Wake.  Only use is to disturb the dwarves. */
1193 {
1194     if (obj != DWARF ||
1195         !game.closed) {
1196         rspeak(actions[verb].message);
1197         return GO_CLEAROBJ;
1198     } else {
1199         rspeak(PROD_DWARF);
1200         return GO_DWARFWAKE;
1201     }
1202 }
1203
1204 static int wave(token_t verb, token_t obj)
1205 /* Wave.  No effect unless waving rod at fissure or at bird. */
1206 {
1207     if (obj != ROD ||
1208         !TOTING(obj) ||
1209         (!HERE(BIRD) &&
1210          (game.closng ||
1211           !AT(FISSURE)))) {
1212         rspeak(((!TOTING(obj)) && (obj != ROD ||
1213                                    !TOTING(ROD2))) ?
1214                ARENT_CARRYING :
1215                actions[verb].message);
1216         return GO_CLEAROBJ;
1217     }
1218
1219     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] < 0) {
1220         drop(JADE, game.loc);
1221         game.prop[JADE] = STATE_FOUND;
1222         --game.tally;
1223         rspeak(NECKLACE_FLY);
1224         return GO_CLEAROBJ;
1225     } else {
1226         if (game.closed) {
1227             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1228                    CAGE_FLY :
1229                    FREE_FLY);
1230             return GO_DWARFWAKE;
1231         }
1232         if (game.closng ||
1233             !AT(FISSURE)) {
1234             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1235                    CAGE_FLY :
1236                    FREE_FLY);
1237             return GO_CLEAROBJ;
1238         }
1239         if (HERE(BIRD))
1240             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1241                    CAGE_FLY :
1242                    FREE_FLY);
1243
1244         state_change(FISSURE,
1245                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1246         return GO_CLEAROBJ;
1247     }
1248 }
1249
1250 int action(struct command_t *command)
1251 /*  Analyse a verb.  Remember what it was, go back for object if second word
1252  *  unless verb is "say", which snarfs arbitrary second word.
1253  */
1254 {
1255     if (command->part == unknown) {
1256         /*  Analyse an object word.  See if the thing is here, whether
1257          *  we've got a verb yet, and so on.  Object must be here
1258          *  unless verb is "find" or "invent(ory)" (and no new verb
1259          *  yet to be analysed).  Water and oil are also funny, since
1260          *  they are never actually dropped at any location, but might
1261          *  be here inside the bottle or urn or as a feature of the
1262          *  location. */
1263         if (HERE(command->obj))
1264             /* FALL THROUGH */;
1265         else if (command->obj == GRATE) {
1266             if (game.loc == LOC_START ||
1267                 game.loc == LOC_VALLEY ||
1268                 game.loc == LOC_SLIT) {
1269                 command->obj = DPRSSN;
1270             }
1271             if (game.loc == LOC_COBBLE ||
1272                 game.loc == LOC_DEBRIS ||
1273                 game.loc == LOC_AWKWARD ||
1274                 game.loc == LOC_BIRD ||
1275                 game.loc == LOC_PITTOP) {
1276                 command->obj = ENTRNC;
1277             }
1278         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1279             /* FALL THROUGH */;
1280         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1281                  command->obj == LIQLOC(game.loc))
1282             /* FALL THROUGH */;
1283         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != 0) {
1284             command->obj = URN;
1285             /* FALL THROUGH */;
1286         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != 0) {
1287             command->obj = PLANT2;
1288             /* FALL THROUGH */;
1289         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1290             game.knfloc = -1;
1291             rspeak(KNIVES_VANISH);
1292             return GO_CLEAROBJ;
1293         } else if (command->obj == ROD && HERE(ROD2)) {
1294             command->obj = ROD2;
1295             /* FALL THROUGH */;
1296         } else if ((command->verb == FIND ||
1297                     command->verb == INVENTORY) && command->wd2 <= 0)
1298             /* FALL THROUGH */;
1299         else {
1300             sspeak(NO_SEE, command->raw1);
1301             return GO_CLEAROBJ;
1302         }
1303
1304         if (command->wd2 > 0)
1305             return GO_WORD2;
1306         if (command->verb != 0)
1307             command->part = transitive;
1308     }
1309
1310     switch (command->part) {
1311     case intransitive:
1312         if (command->wd2 > 0 && command->verb != SAY)
1313             return GO_WORD2;
1314         if (command->verb == SAY)
1315             command->obj = command->wd2;
1316         if (command->obj == NO_OBJECT ||
1317             command->obj == INTRANSITIVE) {
1318             /*  Analyse an intransitive verb (ie, no object given yet). */
1319             switch (command->verb) {
1320             case CARRY:
1321                 return vcarry(command->verb, INTRANSITIVE);
1322             case  DROP:
1323                 return GO_UNKNOWN;
1324             case  SAY:
1325                 return GO_UNKNOWN;
1326             case  UNLOCK:
1327                 return lock(command->verb, INTRANSITIVE);
1328             case  NOTHING: {
1329                 rspeak(OK_MAN);
1330                 return (GO_CLEAROBJ);
1331             }
1332             case  LOCK:
1333                 return lock(command->verb, INTRANSITIVE);
1334             case  LIGHT:
1335                 return light(command->verb, INTRANSITIVE);
1336             case  EXTINGUISH:
1337                 return extinguish(command->verb, INTRANSITIVE);
1338             case  WAVE:
1339                 return GO_UNKNOWN;
1340             case  TAME:
1341                 return GO_UNKNOWN;
1342             case GO: {
1343                 rspeak(actions[command->verb].message);
1344                 return GO_CLEAROBJ;
1345             }
1346             case ATTACK:
1347                 return attack(command);
1348             case POUR:
1349                 return pour(command->verb, command->obj);
1350             case EAT:
1351                 return eat(command->verb, INTRANSITIVE);
1352             case DRINK:
1353                 return drink(command->verb, command->obj);
1354             case RUB:
1355                 return GO_UNKNOWN;
1356             case THROW:
1357                 return GO_UNKNOWN;
1358             case QUIT:
1359                 return quit();
1360             case FIND:
1361                 return GO_UNKNOWN;
1362             case INVENTORY:
1363                 return inven();
1364             case FEED:
1365                 return GO_UNKNOWN;
1366             case FILL:
1367                 return fill(command->verb, command->obj);
1368             case BLAST:
1369                 blast();
1370                 return GO_CLEAROBJ;
1371             case SCORE:
1372                 score(scoregame);
1373                 return GO_CLEAROBJ;
1374             case GIANTWORDS:
1375                 return bigwords(command->wd1);
1376             case BRIEF:
1377                 return brief();
1378             case READ:
1379                 command->obj = INTRANSITIVE;
1380                 return read(*command);
1381             case BREAK:
1382                 return GO_UNKNOWN;
1383             case WAKE:
1384                 return GO_UNKNOWN;
1385             case SAVE:
1386                 return suspend();
1387             case RESUME:
1388                 return resume();
1389             case FLY:
1390                 return fly(command->verb, INTRANSITIVE);
1391             case LISTEN:
1392                 return listen();
1393             case PART:
1394                 return reservoir();
1395             default:
1396                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1397             }
1398         }
1399     /* FALLTHRU */
1400     case transitive:
1401         /*  Analyse a transitive verb. */
1402         switch (command->verb) {
1403         case  CARRY:
1404             return vcarry(command->verb, command->obj);
1405         case  DROP:
1406             return discard(command->verb, command->obj, false);
1407         case  SAY:
1408             return say(command);
1409         case  UNLOCK:
1410             return lock(command->verb, command->obj);
1411         case  NOTHING: {
1412             rspeak(OK_MAN);
1413             return (GO_CLEAROBJ);
1414         }
1415         case  LOCK:
1416             return lock(command->verb, command->obj);
1417         case LIGHT:
1418             return light(command->verb, command->obj);
1419         case EXTINGUISH:
1420             return extinguish(command->verb, command->obj);
1421         case WAVE:
1422             return wave(command->verb, command->obj);
1423         case TAME: {
1424             rspeak(actions[command->verb].message);
1425             return GO_CLEAROBJ;
1426         }
1427         case GO: {
1428             rspeak(actions[command->verb].message);
1429             return GO_CLEAROBJ;
1430         }
1431         case ATTACK:
1432             return attack(command);
1433         case POUR:
1434             return pour(command->verb, command->obj);
1435         case EAT:
1436             return eat(command->verb, command->obj);
1437         case DRINK:
1438             return drink(command->verb, command->obj);
1439         case RUB:
1440             return rub(command->verb, command->obj);
1441         case THROW:
1442             return throw (command);
1443         case QUIT: {
1444             rspeak(actions[command->verb].message);
1445             return GO_CLEAROBJ;
1446         }
1447         case FIND:
1448             return find(command->verb, command->obj);
1449         case INVENTORY:
1450             return find(command->verb, command->obj);
1451         case FEED:
1452             return feed(command->verb, command->obj);
1453         case FILL:
1454             return fill(command->verb, command->obj);
1455         case BLAST:
1456             blast();
1457             return GO_CLEAROBJ;
1458         case SCORE: {
1459             rspeak(actions[command->verb].message);
1460             return GO_CLEAROBJ;
1461         }
1462         case GIANTWORDS: {
1463             rspeak(actions[command->verb].message);
1464             return GO_CLEAROBJ;
1465         }
1466         case BRIEF: {
1467             rspeak(actions[command->verb].message);
1468             return GO_CLEAROBJ;
1469         }
1470         case READ:
1471             return read(*command);
1472         case BREAK:
1473             return vbreak(command->verb, command->obj);
1474         case WAKE:
1475             return wake(command->verb, command->obj);
1476         case SAVE: {
1477             rspeak(actions[command->verb].message);
1478             return GO_CLEAROBJ;
1479         }
1480         case RESUME: {
1481             rspeak(actions[command->verb].message);
1482             return GO_CLEAROBJ;
1483         }
1484         case FLY:
1485             return fly(command->verb, command->obj);
1486         case LISTEN: {
1487             rspeak(actions[command->verb].message);
1488             return GO_CLEAROBJ;
1489         }
1490         case PART:
1491             return reservoir();
1492         default:
1493             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1494         }
1495     case unknown:
1496         /* Unknown verb, couldn't deduce object - might need hint */
1497         sspeak(WHAT_DO, command->raw1);
1498         return GO_CHECKHINT;
1499     default:
1500         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1501     }
1502 }