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 int attack(struct command_t *command)
  10 /*  Attack.  Assume target if unambiguous.  "Throw" also links here.
  11  *  Attackable objects fall into two categories: enemies (snake,
  12  *  dwarf, etc.)  and others (bird, clam, machine).  Ambiguous if 2
  13  *  enemies, or no enemies but 2 others. */
  14 {
  15     vocab_t verb = command->verb;
  16     vocab_t obj = command->obj;
  17
  18     if (obj == NO_OBJECT ||
  19         obj == INTRANSITIVE) {
  20         int changes = 0;
  21         if (atdwrf(game.loc) > 0) {
  22             obj = DWARF;
  23             ++changes;
  24         }
  25         if (HERE(SNAKE)) {
  26             obj = SNAKE;
  27             ++changes;
  28         }
  29         if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
  30             obj = DRAGON;
  31             ++changes;
  32         }
  33         if (AT(TROLL)) {
  34             obj = TROLL;
  35             ++changes;
  36         }
  37         if (AT(OGRE)) {
  38             obj = OGRE;
  39             ++changes;
  40         }
  41         if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
  42             obj = BEAR;
  43             ++changes;
  44         }
  45         /* check for low-priority targets */
  46         if (obj == NO_OBJECT) {
  47             /* Can't attack bird or machine by throwing axe. */
  48             if (HERE(BIRD) && verb != THROW) {
  49                 obj = BIRD;
  50                 ++changes;
  51             }
  52             if (HERE(VEND) && verb != THROW) {
  53                 obj = VEND;
  54                 ++changes;
  55             }
  56             /* Clam and oyster both treated as clam for intransitive case;
  57              * no harm done. */
  58             if (HERE(CLAM) || HERE(OYSTER)) {
  59                 obj = CLAM;
  60                 ++changes;
  61             }
  62         }
  63         if (changes >= 2)
  64             return GO_UNKNOWN;
  65     }
  66
  67     if (obj == BIRD) {
  68         if (game.closed) {
  69             rspeak(UNHAPPY_BIRD);
  70         } else {
  71             DESTROY(BIRD);
  72             rspeak(BIRD_DEAD);
  73         }
  74         return GO_CLEAROBJ;
  75     }
  76     if (obj == VEND) {
  77         state_change(VEND,
  78                      game.prop[VEND] == VEND_BLOCKS ? VEND_UNBLOCKS : VEND_BLOCKS);
  79         return GO_CLEAROBJ;
  80     }
  81
  82     if (obj == BEAR) {
  83         switch (game.prop[BEAR]) {
  84         case UNTAMED_BEAR:
  85             rspeak(BEAR_HANDS);
  86             break;
  87         case SITTING_BEAR:
  88             rspeak(BEAR_CONFUSED);
  89             break;
  90         case CONTENTED_BEAR:
  91             rspeak(BEAR_CONFUSED);
  92             break;
  93         case BEAR_DEAD:
  94             rspeak(ALREADY_DEAD);
  95             break;
  96         }
  97         return GO_CLEAROBJ;
  98     }
  99     if (obj == DRAGON && game.prop[DRAGON] == DRAGON_BARS) {
 100         /*  Fun stuff for dragon.  If he insists on attacking it, win!
 101          *  Set game.prop to dead, move dragon to central loc (still
 102          *  fixed), move rug there (not fixed), and move him there,
 103          *  too.  Then do a null motion to get new description. */
 104         rspeak(BARE_HANDS_QUERY);
 105         if (silent_yes()) {
 106             // FIXME: setting wd1 is a workaround for broken logic
 107             command->wd1 = token_to_packed("Y");
 108         } else {
 109             // FIXME: setting wd1 is a workaround for broken logic
 110             command->wd1 = token_to_packed("N");
 111             return GO_CHECKFOO;
 112         }
 113         state_change(DRAGON, DRAGON_DEAD);
 114         game.prop[RUG] = RUG_FLOOR;
 115         /* FIXME: Arithmetic on location values */
 116         int k = (objects[DRAGON].plac + objects[DRAGON].fixd) / 2;
 117         move(DRAGON + NOBJECTS, -1);
 118         move(RUG + NOBJECTS, 0);
 119         move(DRAGON, k);
 120         move(RUG, k);
 121         drop(BLOOD, k);
 122         for (obj = 1; obj <= NOBJECTS; obj++) {
 123             if (game.place[obj] == objects[DRAGON].plac ||
 124                 game.place[obj] == objects[DRAGON].fixd)
 125                 move(obj, k);
 126         }
 127         game.loc = k;
 128         return GO_MOVE;
 129     }
 130
 131     if (obj == OGRE) {
 132         rspeak(OGRE_DODGE);
 133         if (atdwrf(game.loc) == 0)
 134             return GO_CLEAROBJ;
 135
 136         rspeak(KNIFE_THROWN);
 137         DESTROY(OGRE);
 138         int dwarves = 0;
 139         for (int i = 1; i < PIRATE; i++) {
 140             if (game.dloc[i] == game.loc) {
 141                 ++dwarves;
 142                 game.dloc[i] = LOC_LONGWEST;
 143                 game.dseen[i] = false;
 144             }
 145         }
 146         rspeak((dwarves > 1) ?
 147                OGRE_PANIC1 :
 148                OGRE_PANIC2);
 149         return GO_CLEAROBJ;
 150     }
 151
 152     switch (obj) {
 153     case NO_OBJECT:
 154         rspeak(NO_TARGET);
 155         break;
 156     case CLAM:
 157     case OYSTER:
 158         rspeak(SHELL_IMPERVIOUS);
 159         break;
 160     case SNAKE:
 161         rspeak(SNAKE_WARNING);
 162         break;
 163     case DWARF:
 164         if (game.closed) {
 165             return GO_DWARFWAKE;
 166         }
 167         rspeak(BARE_HANDS_QUERY);
 168         break;
 169     case DRAGON:
 170         rspeak(ALREADY_DEAD);
 171         break;
 172     case TROLL:
 173         rspeak(ROCKY_TROLL);
 174         break;
 175     default:
 176         speak(actions[verb].message);
 177     }
 178     return GO_CLEAROBJ;
 179 }
 180
 181 static int bigwords(long id)
 182 /*  FEE FIE FOE FOO (AND FUM).  Advance to next state if given in proper order.
 183  *  Look up foo in special section of vocab to determine which word we've got.
 184  *  Last word zips the eggs back to the giant room (unless already there). */
 185 {
 186   if ((game.foobar == WORD_EMPTY && id == ACTION_WORD(FEE)) ||
 187       (game.foobar == ACTION_WORD(FEE) && id == ACTION_WORD(FIE)) ||
 188       (game.foobar == ACTION_WORD(FIE) && id == ACTION_WORD(FOE)) ||
 189       (game.foobar == ACTION_WORD(FOE) && id == ACTION_WORD(FOO)) ||
 190       (game.foobar == ACTION_WORD(FOE) && id == ACTION_WORD(FUM)))
 191     {
 192       game.foobar = id;
 193       if ((id != ACTION_WORD(FOO)) && (id != ACTION_WORD(FUM))) {
 194         rspeak(OK_MAN);
 195         return GO_CLEAROBJ;
 196       }
 197       game.foobar = WORD_EMPTY;
 198       if (game.place[EGGS] == objects[EGGS].plac ||
 199           (TOTING(EGGS) && game.loc == objects[EGGS].plac)) {
 200         rspeak(NOTHING_HAPPENS);
 201         return GO_CLEAROBJ;
 202       } else {
 203         /*  Bring back troll if we steal the eggs back from him before
 204          *  crossing. */
 205         if (game.place[EGGS] == LOC_NOWHERE && game.place[TROLL] == LOC_NOWHERE && game.prop[TROLL] == TROLL_UNPAID)
 206           game.prop[TROLL] = TROLL_PAIDONCE;
 207         int k = EGGS_DONE;
 208         if (HERE(EGGS))
 209           k = EGGS_VANISHED;
 210         if (game.loc == objects[EGGS].plac)
 211           k = EGGS_HERE;
 212         move(EGGS, objects[EGGS].plac);
 213         pspeak(EGGS, look, k, true);
 214         return GO_CLEAROBJ;
 215       }
 216     }
 217   else
 218     {
 219       if (game.loc == LOC_GIANTROOM) {
 220         rspeak(START_OVER);
 221       } else {
 222           /* This is new begavior in Open Adventure - sounds better when
 223            * player isn't in the Giant Room. */
 224         rspeak(WELL_POINTLESS);
 225       }
 226       game.foobar = WORD_EMPTY;
 227       return GO_CLEAROBJ;
 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     speak(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             speak(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 = (game.prop[RUG] == RUG_HOVER) ? RUG_FLOOR : RUG_HOVER;
 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     speak(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     speak(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     speak(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     switch (obj) {
 635     case BIRD:
 636         rspeak(BIRD_PINING);
 637         break;
 638     case DRAGON:
 639         if (game.prop[DRAGON] != DRAGON_BARS)
 640             rspeak(RIDICULOUS_ATTEMPT);
 641         else
 642             rspeak(NOTHING_EDIBLE);
 643         break;
 644     case SNAKE:
 645         if (!game.closed && HERE(BIRD)) {
 646             DESTROY(BIRD);
 647             rspeak(BIRD_DEVOURED);
 648         } else
 649             rspeak(NOTHING_EDIBLE);
 650         break;
 651     case TROLL:
 652         rspeak(TROLL_VICES);
 653         break;
 654     case DWARF:
 655         if (HERE(FOOD)) {
 656             game.dflag += 2;
 657             rspeak(REALLY_MAD);
 658         } else
 659             speak(actions[verb].message);
 660         break;
 661     case BEAR:
 662         if (game.prop[BEAR] == BEAR_DEAD) {
 663             rspeak(RIDICULOUS_ATTEMPT);
 664             break;
 665         }
 666         if (game.prop[BEAR] == UNTAMED_BEAR) {
 667             if (HERE(FOOD)) {
 668                 DESTROY(FOOD);
 669                 game.fixed[AXE] = IS_FREE;
 670                 game.prop[AXE] = AXE_HERE;
 671                 state_change(BEAR, SITTING_BEAR);
 672             } else
 673                 rspeak(NOTHING_EDIBLE);
 674             break;
 675         }
 676         speak(actions[verb].message);
 677         break;
 678     case OGRE:
 679         if (HERE(FOOD))
 680             rspeak(OGRE_FULL);
 681         else
 682             speak(actions[verb].message);
 683         break;
 684     default:
 685         rspeak(AM_GAME);
 686     }
 687     return GO_CLEAROBJ;
 688 }
 689
 690 int fill(token_t verb, token_t obj)
 691 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 692  *  is nasty.) */
 693 {
 694     if (obj == VASE) {
 695         if (LIQLOC(game.loc) == NO_OBJECT) {
 696             rspeak(FILL_INVALID);
 697             return GO_CLEAROBJ;
 698         }
 699         if (!TOTING(VASE)) {
 700             rspeak(ARENT_CARRYING);
 701             return GO_CLEAROBJ;
 702         }
 703         rspeak(SHATTER_VASE);
 704         game.prop[VASE] = VASE_BROKEN;
 705         game.fixed[VASE] = IS_FIXED;
 706         return (discard(verb, VASE, true));
 707     }
 708
 709     if (obj == URN) {
 710         if (game.prop[URN] != URN_EMPTY) {
 711             rspeak(FULL_URN);
 712             return GO_CLEAROBJ;
 713         }
 714         if (!HERE(BOTTLE)) {
 715             rspeak(FILL_INVALID);
 716             return GO_CLEAROBJ;
 717         }
 718         int k = LIQUID();
 719         switch (k) {
 720         case WATER:
 721             game.prop[BOTTLE] = EMPTY_BOTTLE;
 722             rspeak(WATER_URN);
 723             break;
 724         case OIL:
 725             game.prop[URN] = URN_DARK;
 726             game.prop[BOTTLE] = EMPTY_BOTTLE;
 727             rspeak(OIL_URN);
 728             break;
 729         case NO_OBJECT:
 730         default:
 731             rspeak(FILL_INVALID);
 732             return GO_CLEAROBJ;
 733         }
 734         game.place[k] = LOC_NOWHERE;
 735         return GO_CLEAROBJ;
 736     }
 737     if (obj != NO_OBJECT && obj != BOTTLE) {
 738         speak(actions[verb].message);
 739         return GO_CLEAROBJ;
 740     }
 741     if (obj == NO_OBJECT && !HERE(BOTTLE))
 742         return GO_UNKNOWN;
 743
 744     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 745         rspeak(URN_NOPOUR);
 746         return GO_CLEAROBJ;
 747     }
 748     if (LIQUID() != NO_OBJECT) {
 749         rspeak(BOTTLE_FULL);
 750         return GO_CLEAROBJ;
 751     }
 752     if (LIQLOC(game.loc) == NO_OBJECT) {
 753         rspeak(NO_LIQUID);
 754         return GO_CLEAROBJ;
 755     }
 756
 757     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 758                  ? OIL_BOTTLE
 759                  : WATER_BOTTLE);
 760     if (TOTING(BOTTLE))
 761         game.place[LIQUID()] = CARRIED;
 762     return GO_CLEAROBJ;
 763 }
 764
 765 static int find(token_t verb, token_t obj)
 766 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 767 {
 768     if (TOTING(obj)) {
 769         rspeak(ALREADY_CARRYING);
 770         return GO_CLEAROBJ;
 771     }
 772
 773     if (game.closed) {
 774         rspeak(NEEDED_NEARBY);
 775         return GO_CLEAROBJ;
 776     }
 777
 778     if (AT(obj) ||
 779         (LIQUID() == obj && AT(BOTTLE)) ||
 780         obj == LIQLOC(game.loc) ||
 781         (obj == DWARF && atdwrf(game.loc) > 0)) {
 782         rspeak(YOU_HAVEIT);
 783         return GO_CLEAROBJ;
 784     }
 785
 786
 787     speak(actions[verb].message);
 788     return GO_CLEAROBJ;
 789 }
 790
 791 static int fly(token_t verb, token_t obj)
 792 /* Fly.  Snide remarks unless hovering rug is here. */
 793 {
 794     if (obj == INTRANSITIVE) {
 795         if (!HERE(RUG)) {
 796             rspeak(FLAP_ARMS);
 797             return GO_CLEAROBJ;
 798         }
 799         if (game.prop[RUG] != RUG_HOVER) {
 800             rspeak(RUG_NOTHING2);
 801             return GO_CLEAROBJ;
 802         }
 803         obj = RUG;
 804     }
 805
 806     if (obj != RUG) {
 807         speak(actions[verb].message);
 808         return GO_CLEAROBJ;
 809     }
 810     if (game.prop[RUG] != RUG_HOVER) {
 811         rspeak(RUG_NOTHING1);
 812         return GO_CLEAROBJ;
 813     }
 814     game.oldlc2 = game.oldloc;
 815     game.oldloc = game.loc;
 816     /* FIXME: Arithmetic on location values */
 817     game.newloc = game.place[RUG] + game.fixed[RUG] - game.loc;
 818
 819     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 820         rspeak(RUG_GOES);
 821     } else {
 822         rspeak(RUG_RETURNS);
 823     }
 824     return GO_TERMINATE;
 825 }
 826
 827 static int inven(void)
 828 /* Inventory. If object, treat same as find.  Else report on current burden. */
 829 {
 830     bool empty = true;
 831     for (int i = 1; i <= NOBJECTS; i++) {
 832         if (i == BEAR ||
 833             !TOTING(i))
 834             continue;
 835         if (empty) {
 836             rspeak(NOW_HOLDING);
 837             empty = false;
 838         }
 839         pspeak(i, touch, -1, false);
 840     }
 841     if (TOTING(BEAR))
 842         rspeak(TAME_BEAR);
 843     if (empty)
 844         rspeak(NO_CARRY);
 845     return GO_CLEAROBJ;
 846 }
 847
 848 static int light(token_t verb, token_t obj)
 849 /*  Light.  Applicable only to lamp and urn. */
 850 {
 851     if (obj == INTRANSITIVE) {
 852         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0)
 853             obj = LAMP;
 854         if (HERE(URN) && game.prop[URN] == URN_DARK)
 855             obj =  URN;
 856         if (obj == INTRANSITIVE ||
 857             (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0 &&
 858              HERE(URN) && game.prop[URN] == URN_DARK))
 859             return GO_UNKNOWN;
 860     }
 861
 862     if (obj == URN) {
 863         state_change(URN, game.prop[URN] == URN_EMPTY ?
 864                      URN_EMPTY :
 865                      URN_LIT);
 866         return GO_CLEAROBJ;
 867     } else {
 868         if (obj != LAMP) {
 869             speak(actions[verb].message);
 870             return GO_CLEAROBJ;
 871         }
 872         if (game.limit < 0) {
 873             rspeak(LAMP_OUT);
 874             return GO_CLEAROBJ;
 875         }
 876         state_change(LAMP, LAMP_BRIGHT);
 877         if (game.wzdark)
 878             return GO_TOP;
 879         else
 880             return GO_CLEAROBJ;
 881     }
 882 }
 883
 884 static int listen(void)
 885 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 886 {
 887     long sound = locations[game.loc].sound;
 888     if (sound != SILENT) {
 889         rspeak(sound);
 890         if (!locations[game.loc].loud)
 891             rspeak(NO_MESSAGE);
 892         return GO_CLEAROBJ;
 893     }
 894     for (int i = 1; i <= NOBJECTS; i++) {
 895         if (!HERE(i) ||
 896             objects[i].sounds[0] == NULL ||
 897             game.prop[i] < 0)
 898             continue;
 899         int mi =  game.prop[i];
 900         if (i == BIRD)
 901             mi += 3 * game.blooded;
 902         long packed_zzword = token_to_packed(game.zzword);
 903         pspeak(i, hear, mi, true, packed_zzword);
 904         rspeak(NO_MESSAGE);
 905         if (i == BIRD && mi == BIRD_ENDSTATE)
 906             DESTROY(BIRD);
 907         return GO_CLEAROBJ;
 908     }
 909     rspeak(ALL_SILENT);
 910     return GO_CLEAROBJ;
 911 }
 912
 913 static int lock(token_t verb, token_t obj)
 914 /* Lock, unlock, no object given.  Assume various things if present. */
 915 {
 916     if (obj == INTRANSITIVE) {
 917         if (HERE(CLAM))
 918             obj = CLAM;
 919         if (HERE(OYSTER))
 920             obj = OYSTER;
 921         if (AT(DOOR))
 922             obj = DOOR;
 923         if (AT(GRATE))
 924             obj = GRATE;
 925         if (HERE(CHAIN))
 926             obj = CHAIN;
 927         if (obj == INTRANSITIVE) {
 928             rspeak(NOTHING_LOCKED);
 929             return GO_CLEAROBJ;
 930         }
 931     }
 932
 933     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 934      *  and for chain. */
 935     if (obj == GRATE ||
 936         obj == CHAIN) {
 937         if (HERE(KEYS)) {
 938             if (obj == CHAIN)
 939                 return chain(verb);
 940             if (game.closng) {
 941                 rspeak(EXIT_CLOSED);
 942                 if (!game.panic)
 943                     game.clock2 = PANICTIME;
 944                 game.panic = true;
 945                 return GO_CLEAROBJ ;
 946             } else {
 947                 state_change(GRATE, (verb == LOCK) ?
 948                              GRATE_CLOSED :
 949                              GRATE_OPEN);
 950                 return GO_CLEAROBJ;
 951             }
 952         }
 953         rspeak(NO_KEYS);
 954         return GO_CLEAROBJ;
 955     }
 956
 957     switch (obj) {
 958     case CLAM:
 959         if (verb == LOCK)
 960             rspeak(HUH_MAN);
 961         else if (!TOTING(TRIDENT))
 962             rspeak(OYSTER_OPENER);
 963         else {
 964             DESTROY(CLAM);
 965             drop(OYSTER, game.loc);
 966             drop(PEARL, LOC_CULDESAC);
 967             rspeak(PEARL_FALLS);
 968         }
 969         return GO_CLEAROBJ;
 970     case OYSTER:
 971         if (verb == LOCK)
 972             rspeak(HUH_MAN);
 973         else
 974             rspeak(OYSTER_OPENER);
 975
 976         return GO_CLEAROBJ;
 977     case DOOR:
 978         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
 979         break;
 980     case CAGE:
 981         rspeak( NO_LOCK);
 982         break;
 983     case KEYS:
 984         rspeak(CANNOT_UNLOCK);
 985         break;
 986     default:
 987         speak(actions[verb].message);
 988     }
 989
 990     return GO_CLEAROBJ;
 991 }
 992
 993 static int pour(token_t verb, token_t obj)
 994 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
 995  *  special tests for pouring water or oil on plant or rusty door. */
 996 {
 997     if (obj == BOTTLE ||
 998         obj == NO_OBJECT)
 999         obj = LIQUID();
1000     if (obj == NO_OBJECT)
1001         return GO_UNKNOWN;
1002     if (!TOTING(obj)) {
1003         speak(actions[verb].message);
1004         return GO_CLEAROBJ;
1005     }
1006
1007     if (obj != OIL && obj != WATER) {
1008         rspeak(CANT_POUR);
1009         return GO_CLEAROBJ;
1010     }
1011     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1012         return fill(verb, URN);
1013     game.prop[BOTTLE] = EMPTY_BOTTLE;
1014     game.place[obj] = LOC_NOWHERE;
1015     if (!(AT(PLANT) ||
1016           AT(DOOR))) {
1017         rspeak(GROUND_WET);
1018         return GO_CLEAROBJ;
1019     }
1020     if (!AT(DOOR)) {
1021         if (obj == WATER) {
1022             /* cycle through the three plant states */
1023             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1024             game.prop[PLANT2] = game.prop[PLANT];
1025             return GO_MOVE;
1026         } else {
1027             rspeak(SHAKING_LEAVES);
1028             return GO_CLEAROBJ;
1029         }
1030     } else {
1031         state_change(DOOR, (obj == OIL) ?
1032                      DOOR_UNRUSTED :
1033                      DOOR_RUSTED);
1034         return GO_CLEAROBJ;
1035     }
1036 }
1037
1038 static int quit(void)
1039 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1040 {
1041     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1042         terminate(quitgame);
1043     return GO_CLEAROBJ;
1044 }
1045
1046 static int read(struct command_t command)
1047 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1048 {
1049     if (command.obj == INTRANSITIVE) {
1050         command.obj = 0;
1051         for (int i = 1; i <= NOBJECTS; i++) {
1052             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1053                 command.obj = command.obj * NOBJECTS + i;
1054         }
1055         if (command.obj > NOBJECTS ||
1056             command.obj == 0 ||
1057             DARK(game.loc))
1058             return GO_UNKNOWN;
1059     }
1060
1061     if (DARK(game.loc)) {
1062         sspeak(NO_SEE, command.raw1);
1063     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1064         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1065     } else if (objects[command.obj].texts[0] == NULL ||
1066                game.prop[command.obj] < 0) {
1067         speak(actions[command.verb].message);
1068     } else
1069         pspeak(command.obj, study, game.prop[command.obj], true);
1070     return GO_CLEAROBJ;
1071 }
1072
1073 static int reservoir(void)
1074 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1075 {
1076     /* FIXME: Arithmetic on state numbers */
1077     if (!AT(RESER) && game.loc != game.fixed[RESER] - 1) {
1078         rspeak(NOTHING_HAPPENS);
1079         return GO_CLEAROBJ;
1080     } else {
1081         state_change(RESER,
1082                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1083         if (AT(RESER))
1084             return GO_CLEAROBJ;
1085         else {
1086             game.oldlc2 = game.loc;
1087             game.newloc = LOC_NOWHERE;
1088             rspeak(NOT_BRIGHT);
1089             return GO_TERMINATE;
1090         }
1091     }
1092 }
1093
1094 static int rub(token_t verb, token_t obj)
1095 /* Rub.  Yields various snide remarks except for lit urn. */
1096 {
1097     if (obj == URN && game.prop[URN] == URN_LIT) {
1098         DESTROY(URN);
1099         drop(AMBER, game.loc);
1100         game.prop[AMBER] = AMBER_IN_ROCK;
1101         --game.tally;
1102         drop(CAVITY, game.loc);
1103         rspeak(URN_GENIES);
1104     } else if (obj != LAMP) {
1105         rspeak(PECULIAR_NOTHING);
1106     } else {
1107         speak(actions[verb].message);
1108     }
1109     return GO_CLEAROBJ;
1110 }
1111
1112 static int say(struct command_t *command)
1113 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1114 {
1115     if (command->wd2 > 0) {
1116         command->wd1 = command->wd2;
1117         strcpy(command->raw1, command->raw2);
1118     }
1119     char word1[TOKLEN + 1];
1120     packed_to_token(command->wd1, word1);
1121     int wd = (int) get_vocab_id(word1);
1122     if (wd == MOTION_WORD(XYZZY) ||
1123         wd == MOTION_WORD(PLUGH) ||
1124         wd == MOTION_WORD(PLOVER) ||
1125         wd == ACTION_WORD(FEE) ||
1126         wd == ACTION_WORD(FIE) ||
1127         wd == ACTION_WORD(FOE) ||
1128         wd == ACTION_WORD(FOO) ||
1129         wd == ACTION_WORD(FUM) ||
1130         wd == ACTION_WORD(PART)) {
1131         /* FIXME: scribbles on the interpreter's command block */
1132         wordclear(&command->wd2);
1133         return GO_LOOKUP;
1134     }
1135     sspeak(OKEY_DOKEY, command->raw1);
1136     return GO_CLEAROBJ;
1137 }
1138
1139 static int throw_support(long spk)
1140 {
1141     rspeak(spk);
1142     drop(AXE, game.loc);
1143     return GO_MOVE;
1144 }
1145
1146 static int throw (struct command_t *command)
1147 /*  Throw.  Same as discard unless axe.  Then same as attack except
1148  *  ignore bird, and if dwarf is present then one might be killed.
1149  *  (Only way to do so!)  Axe also special for dragon, bear, and
1150  *  troll.  Treasures special for troll. */
1151 {
1152     if (!TOTING(command->obj)) {
1153         speak(actions[command->verb].message);
1154         return GO_CLEAROBJ;
1155     }
1156     if (objects[command->obj].is_treasure && AT(TROLL)) {
1157         /*  Snarf a treasure for the troll. */
1158         drop(command->obj, LOC_NOWHERE);
1159         move(TROLL, LOC_NOWHERE);
1160         move(TROLL + NOBJECTS, LOC_NOWHERE);
1161         drop(TROLL2, objects[TROLL].plac);
1162         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1163         juggle(CHASM);
1164         rspeak(TROLL_SATISFIED);
1165         return GO_CLEAROBJ;
1166     }
1167     if (command->obj == FOOD && HERE(BEAR)) {
1168         /* But throwing food is another story. */
1169         command->obj = BEAR;
1170         return (feed(command->verb, command->obj));
1171     }
1172     if (command->obj != AXE)
1173         return (discard(command->verb, command->obj, false));
1174     else {
1175         if (atdwrf(game.loc) <= 0) {
1176             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1177                 return throw_support(DRAGON_SCALES);
1178             if (AT(TROLL))
1179                 return throw_support(TROLL_RETURNS);
1180             else if (AT(OGRE))
1181                 return throw_support(OGRE_DODGE);
1182             else if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1183                 /* This'll teach him to throw the axe at the bear! */
1184                 drop(AXE, game.loc);
1185                 game.fixed[AXE] = IS_FIXED;
1186                 juggle(BEAR);
1187                 state_change(AXE, AXE_LOST);
1188                 return GO_CLEAROBJ;
1189             }
1190             command->obj = NO_OBJECT;
1191             return (attack(command));
1192         }
1193
1194         if (randrange(NDWARVES + 1) < game.dflag) {
1195             return throw_support(DWARF_DODGES);
1196         } else {
1197             long i = atdwrf(game.loc);
1198             game.dseen[i] = false;
1199             game.dloc[i] = LOC_NOWHERE;
1200             return throw_support((++game.dkill == 1) ?
1201                                  DWARF_SMOKE :
1202                                  KILLED_DWARF);
1203         }
1204     }
1205 }
1206
1207 static int wake(token_t verb, token_t obj)
1208 /* Wake.  Only use is to disturb the dwarves. */
1209 {
1210     if (obj != DWARF ||
1211         !game.closed) {
1212         speak(actions[verb].message);
1213         return GO_CLEAROBJ;
1214     } else {
1215         rspeak(PROD_DWARF);
1216         return GO_DWARFWAKE;
1217     }
1218 }
1219
1220 static int wave(token_t verb, token_t obj)
1221 /* Wave.  No effect unless waving rod at fissure or at bird. */
1222 {
1223     if (obj != ROD ||
1224         !TOTING(obj) ||
1225         (!HERE(BIRD) &&
1226          (game.closng ||
1227           !AT(FISSURE)))) {
1228         speak(((!TOTING(obj)) && (obj != ROD ||
1229                                    !TOTING(ROD2))) ?
1230                arbitrary_messages[ARENT_CARRYING] :
1231                actions[verb].message);
1232         return GO_CLEAROBJ;
1233     }
1234
1235     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] < 0) {
1236         drop(JADE, game.loc);
1237         game.prop[JADE] = STATE_FOUND;
1238         --game.tally;
1239         rspeak(NECKLACE_FLY);
1240         return GO_CLEAROBJ;
1241     } else {
1242         if (game.closed) {
1243             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1244                    CAGE_FLY :
1245                    FREE_FLY);
1246             return GO_DWARFWAKE;
1247         }
1248         if (game.closng ||
1249             !AT(FISSURE)) {
1250             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1251                    CAGE_FLY :
1252                    FREE_FLY);
1253             return GO_CLEAROBJ;
1254         }
1255         if (HERE(BIRD))
1256             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1257                    CAGE_FLY :
1258                    FREE_FLY);
1259
1260         state_change(FISSURE,
1261                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1262         return GO_CLEAROBJ;
1263     }
1264 }
1265
1266 int action(struct command_t *command)
1267 /*  Analyse a verb.  Remember what it was, go back for object if second word
1268  *  unless verb is "say", which snarfs arbitrary second word.
1269  */
1270 {
1271     if (command->part == unknown) {
1272         /*  Analyse an object word.  See if the thing is here, whether
1273          *  we've got a verb yet, and so on.  Object must be here
1274          *  unless verb is "find" or "invent(ory)" (and no new verb
1275          *  yet to be analysed).  Water and oil are also funny, since
1276          *  they are never actually dropped at any location, but might
1277          *  be here inside the bottle or urn or as a feature of the
1278          *  location. */
1279         if (HERE(command->obj))
1280             /* FALL THROUGH */;
1281         else if (command->obj == GRATE) {
1282             if (game.loc == LOC_START ||
1283                 game.loc == LOC_VALLEY ||
1284                 game.loc == LOC_SLIT) {
1285                 command->obj = DPRSSN;
1286             }
1287             if (game.loc == LOC_COBBLE ||
1288                 game.loc == LOC_DEBRIS ||
1289                 game.loc == LOC_AWKWARD ||
1290                 game.loc == LOC_BIRD ||
1291                 game.loc == LOC_PITTOP) {
1292                 command->obj = ENTRNC;
1293             }
1294         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1295             /* FALL THROUGH */;
1296         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1297                  command->obj == LIQLOC(game.loc))
1298             /* FALL THROUGH */;
1299         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != 0) {
1300             command->obj = URN;
1301             /* FALL THROUGH */;
1302         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != 0) {
1303             command->obj = PLANT2;
1304             /* FALL THROUGH */;
1305         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1306             game.knfloc = -1;
1307             rspeak(KNIVES_VANISH);
1308             return GO_CLEAROBJ;
1309         } else if (command->obj == ROD && HERE(ROD2)) {
1310             command->obj = ROD2;
1311             /* FALL THROUGH */;
1312         } else if ((command->verb == FIND ||
1313                     command->verb == INVENTORY) && command->wd2 <= 0)
1314             /* FALL THROUGH */;
1315         else {
1316             sspeak(NO_SEE, command->raw1);
1317             return GO_CLEAROBJ;
1318         }
1319
1320         if (command->wd2 > 0)
1321             return GO_WORD2;
1322         if (command->verb != 0)
1323             command->part = transitive;
1324     }
1325
1326     switch (command->part) {
1327     case intransitive:
1328         if (command->wd2 > 0 && command->verb != SAY)
1329             return GO_WORD2;
1330         if (command->verb == SAY)
1331             command->obj = command->wd2;
1332         if (command->obj == NO_OBJECT ||
1333             command->obj == INTRANSITIVE) {
1334             /*  Analyse an intransitive verb (ie, no object given yet). */
1335             switch (command->verb) {
1336             case CARRY:
1337                 return vcarry(command->verb, INTRANSITIVE);
1338             case  DROP:
1339                 return GO_UNKNOWN;
1340             case  SAY:
1341                 return GO_UNKNOWN;
1342             case  UNLOCK:
1343                 return lock(command->verb, INTRANSITIVE);
1344             case  NOTHING: {
1345                 rspeak(OK_MAN);
1346                 return (GO_CLEAROBJ);
1347             }
1348             case  LOCK:
1349                 return lock(command->verb, INTRANSITIVE);
1350             case  LIGHT:
1351                 return light(command->verb, INTRANSITIVE);
1352             case  EXTINGUISH:
1353                 return extinguish(command->verb, INTRANSITIVE);
1354             case  WAVE:
1355                 return GO_UNKNOWN;
1356             case  TAME:
1357                 return GO_UNKNOWN;
1358             case GO: {
1359                 speak(actions[command->verb].message);
1360                 return GO_CLEAROBJ;
1361             }
1362             case ATTACK:
1363                 return attack(command);
1364             case POUR:
1365                 return pour(command->verb, command->obj);
1366             case EAT:
1367                 return eat(command->verb, INTRANSITIVE);
1368             case DRINK:
1369                 return drink(command->verb, command->obj);
1370             case RUB:
1371                 return GO_UNKNOWN;
1372             case THROW:
1373                 return GO_UNKNOWN;
1374             case QUIT:
1375                 return quit();
1376             case FIND:
1377                 return GO_UNKNOWN;
1378             case INVENTORY:
1379                 return inven();
1380             case FEED:
1381                 return GO_UNKNOWN;
1382             case FILL:
1383                 return fill(command->verb, command->obj);
1384             case BLAST:
1385                 blast();
1386                 return GO_CLEAROBJ;
1387             case SCORE:
1388                 score(scoregame);
1389                 return GO_CLEAROBJ;
1390             case FEE:
1391             case FIE:
1392             case FOE:
1393             case FOO:
1394             case FUM:
1395                 return bigwords(command->id1);
1396             case BRIEF:
1397                 return brief();
1398             case READ:
1399                 command->obj = INTRANSITIVE;
1400                 return read(*command);
1401             case BREAK:
1402                 return GO_UNKNOWN;
1403             case WAKE:
1404                 return GO_UNKNOWN;
1405             case SAVE:
1406                 return suspend();
1407             case RESUME:
1408                 return resume();
1409             case FLY:
1410                 return fly(command->verb, INTRANSITIVE);
1411             case LISTEN:
1412                 return listen();
1413             case PART:
1414                 return reservoir();
1415             default:
1416                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1417             }
1418         }
1419     /* FALLTHRU */
1420     case transitive:
1421         /*  Analyse a transitive verb. */
1422         switch (command->verb) {
1423         case  CARRY:
1424             return vcarry(command->verb, command->obj);
1425         case  DROP:
1426             return discard(command->verb, command->obj, false);
1427         case  SAY:
1428             return say(command);
1429         case  UNLOCK:
1430             return lock(command->verb, command->obj);
1431         case  NOTHING: {
1432             rspeak(OK_MAN);
1433             return (GO_CLEAROBJ);
1434         }
1435         case  LOCK:
1436             return lock(command->verb, command->obj);
1437         case LIGHT:
1438             return light(command->verb, command->obj);
1439         case EXTINGUISH:
1440             return extinguish(command->verb, command->obj);
1441         case WAVE:
1442             return wave(command->verb, command->obj);
1443         case TAME: {
1444             speak(actions[command->verb].message);
1445             return GO_CLEAROBJ;
1446         }
1447         case GO: {
1448             speak(actions[command->verb].message);
1449             return GO_CLEAROBJ;
1450         }
1451         case ATTACK:
1452             return attack(command);
1453         case POUR:
1454             return pour(command->verb, command->obj);
1455         case EAT:
1456             return eat(command->verb, command->obj);
1457         case DRINK:
1458             return drink(command->verb, command->obj);
1459         case RUB:
1460             return rub(command->verb, command->obj);
1461         case THROW:
1462             return throw (command);
1463         case QUIT: {
1464             speak(actions[command->verb].message);
1465             return GO_CLEAROBJ;
1466         }
1467         case FIND:
1468             return find(command->verb, command->obj);
1469         case INVENTORY:
1470             return find(command->verb, command->obj);
1471         case FEED:
1472             return feed(command->verb, command->obj);
1473         case FILL:
1474             return fill(command->verb, command->obj);
1475         case BLAST:
1476             blast();
1477             return GO_CLEAROBJ;
1478         case SCORE: {
1479             speak(actions[command->verb].message);
1480             return GO_CLEAROBJ;
1481         }
1482         case FEE:
1483         case FIE:
1484         case FOE:
1485         case FOO:
1486         case FUM: {
1487             speak(actions[command->verb].message);
1488             return GO_CLEAROBJ;
1489         }
1490         case BRIEF: {
1491             speak(actions[command->verb].message);
1492             return GO_CLEAROBJ;
1493         }
1494         case READ:
1495             return read(*command);
1496         case BREAK:
1497             return vbreak(command->verb, command->obj);
1498         case WAKE:
1499             return wake(command->verb, command->obj);
1500         case SAVE: {
1501             speak(actions[command->verb].message);
1502             return GO_CLEAROBJ;
1503         }
1504         case RESUME: {
1505             speak(actions[command->verb].message);
1506             return GO_CLEAROBJ;
1507         }
1508         case FLY:
1509             return fly(command->verb, command->obj);
1510         case LISTEN: {
1511             speak(actions[command->verb].message);
1512             return GO_CLEAROBJ;
1513         }
1514         case PART:
1515             return reservoir();
1516         default:
1517             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1518         }
1519     case unknown:
1520         /* Unknown verb, couldn't deduce object - might need hint */
1521         sspeak(WHAT_DO, command->raw1);
1522         return GO_CHECKHINT;
1523     default:
1524         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1525     }
1526 }