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     obj_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         /* Hardcoding LOC_SECRET5 as the dragon's death location is ugly.
 116          * The way it was computed before was wirse; it depended on the
 117          * two dragon locations being LOC_SECRET4 and LOC_SECRET6 and
 118          * LOC_SECRET5 being right between them.
 119          */
 120         move(DRAGON + NOBJECTS, -1);
 121         move(RUG + NOBJECTS, LOC_NOWHERE);
 122         move(DRAGON, LOC_SECRET5);
 123         move(RUG, LOC_SECRET5);
 124         drop(BLOOD, LOC_SECRET5);
 125         for (obj = 1; obj <= NOBJECTS; obj++) {
 126             if (game.place[obj] == objects[DRAGON].plac ||
 127                 game.place[obj] == objects[DRAGON].fixd)
 128                 move(obj, LOC_SECRET5);
 129         }
 130         game.loc = LOC_SECRET5;
 131         return GO_MOVE;
 132     }
 133
 134     if (obj == OGRE) {
 135         rspeak(OGRE_DODGE);
 136         if (atdwrf(game.loc) == 0)
 137             return GO_CLEAROBJ;
 138
 139         rspeak(KNIFE_THROWN);
 140         DESTROY(OGRE);
 141         int dwarves = 0;
 142         for (int i = 1; i < PIRATE; i++) {
 143             if (game.dloc[i] == game.loc) {
 144                 ++dwarves;
 145                 game.dloc[i] = LOC_LONGWEST;
 146                 game.dseen[i] = false;
 147             }
 148         }
 149         rspeak((dwarves > 1) ?
 150                OGRE_PANIC1 :
 151                OGRE_PANIC2);
 152         return GO_CLEAROBJ;
 153     }
 154
 155     switch (obj) {
 156     case NO_OBJECT:
 157         rspeak(NO_TARGET);
 158         break;
 159     case CLAM:
 160     case OYSTER:
 161         rspeak(SHELL_IMPERVIOUS);
 162         break;
 163     case SNAKE:
 164         rspeak(SNAKE_WARNING);
 165         break;
 166     case DWARF:
 167         if (game.closed) {
 168             return GO_DWARFWAKE;
 169         }
 170         rspeak(BARE_HANDS_QUERY);
 171         break;
 172     case DRAGON:
 173         rspeak(ALREADY_DEAD);
 174         break;
 175     case TROLL:
 176         rspeak(ROCKY_TROLL);
 177         break;
 178     default:
 179         speak(actions[verb].message);
 180     }
 181     return GO_CLEAROBJ;
 182 }
 183
 184 static int bigwords(long id)
 185 /*  FEE FIE FOE FOO (AND FUM).  Advance to next state if given in proper order.
 186  *  Look up foo in special section of vocab to determine which word we've got.
 187  *  Last word zips the eggs back to the giant room (unless already there). */
 188 {
 189     if ((game.foobar == WORD_EMPTY && id == ACTION_WORD(FEE)) ||
 190         (game.foobar == ACTION_WORD(FEE) && id == ACTION_WORD(FIE)) ||
 191         (game.foobar == ACTION_WORD(FIE) && id == ACTION_WORD(FOE)) ||
 192         (game.foobar == ACTION_WORD(FOE) && id == ACTION_WORD(FOO)) ||
 193         (game.foobar == ACTION_WORD(FOE) && id == ACTION_WORD(FUM))) {
 194         game.foobar = id;
 195         if ((id != ACTION_WORD(FOO)) && (id != ACTION_WORD(FUM))) {
 196             rspeak(OK_MAN);
 197             return GO_CLEAROBJ;
 198         }
 199         game.foobar = WORD_EMPTY;
 200         if (game.place[EGGS] == objects[EGGS].plac ||
 201             (TOTING(EGGS) && game.loc == objects[EGGS].plac)) {
 202             rspeak(NOTHING_HAPPENS);
 203             return GO_CLEAROBJ;
 204         } else {
 205             /*  Bring back troll if we steal the eggs back from him before
 206              *  crossing. */
 207             if (game.place[EGGS] == LOC_NOWHERE && game.place[TROLL] == LOC_NOWHERE && game.prop[TROLL] == TROLL_UNPAID)
 208                 game.prop[TROLL] = TROLL_PAIDONCE;
 209             int k = EGGS_DONE;
 210             if (HERE(EGGS))
 211                 k = EGGS_VANISHED;
 212             if (game.loc == objects[EGGS].plac)
 213                 k = EGGS_HERE;
 214             move(EGGS, objects[EGGS].plac);
 215             pspeak(EGGS, look, k, true);
 216             return GO_CLEAROBJ;
 217         }
 218     } else {
 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(vocab_t verb, obj_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, obj_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, obj_t obj)
 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 (TOTING(ROD2) && obj == ROD && !TOTING(ROD))
 451         obj = ROD2;
 452     if (!TOTING(obj)) {
 453         speak(actions[verb].message);
 454         return GO_CLEAROBJ;
 455     }
 456     if (obj == BIRD && HERE(SNAKE)) {
 457         rspeak(BIRD_ATTACKS);
 458         if (game.closed)
 459             return GO_DWARFWAKE;
 460         DESTROY(SNAKE);
 461         /* Set game.prop for use by travel options */
 462         game.prop[SNAKE] = SNAKE_CHASED;
 463
 464     } else if ((GSTONE(obj) && AT(CAVITY) && game.prop[CAVITY] != CAVITY_FULL)) {
 465         rspeak(GEM_FITS);
 466         game.prop[obj] = STATE_IN_CAVITY;
 467         game.prop[CAVITY] = CAVITY_FULL;
 468         if (HERE(RUG) && ((obj == EMERALD && game.prop[RUG] != RUG_HOVER) ||
 469                           (obj == RUBY && game.prop[RUG] == RUG_HOVER))) {
 470             int spk = RUG_RISES;
 471             if (TOTING(RUG))
 472                 spk = RUG_WIGGLES;
 473             if (obj == RUBY)
 474                 spk = RUG_SETTLES;
 475             rspeak(spk);
 476             if (spk != RUG_WIGGLES) {
 477                 int k = (game.prop[RUG] == RUG_HOVER) ? RUG_FLOOR : RUG_HOVER;
 478                 game.prop[RUG] = k;
 479                 if (k == RUG_HOVER)
 480                     k = objects[SAPPH].plac;
 481                 move(RUG + NOBJECTS, k);
 482             }
 483         }
 484     } else if (obj == COINS && HERE(VEND)) {
 485         DESTROY(COINS);
 486         drop(BATTERY, game.loc);
 487         pspeak(BATTERY, look, FRESH_BATTERIES, true);
 488         return GO_CLEAROBJ;
 489     } else if (obj == BIRD && AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
 490         rspeak(BIRD_BURNT);
 491         DESTROY(BIRD);
 492         return GO_CLEAROBJ;
 493     } else if (obj == BEAR && AT(TROLL)) {
 494         state_change(TROLL, TROLL_GONE);
 495         move(TROLL, LOC_NOWHERE);
 496         move(TROLL + NOBJECTS, LOC_NOWHERE);
 497         move(TROLL2, objects[TROLL].plac);
 498         move(TROLL2 + NOBJECTS, objects[TROLL].fixd);
 499         juggle(CHASM);
 500     } else if (obj != VASE ||
 501                game.loc == objects[PILLOW].plac) {
 502         rspeak(OK_MAN);
 503     } else {
 504         state_change(VASE, AT(PILLOW)
 505                      ? VASE_WHOLE
 506                      : VASE_DROPPED);
 507         if (game.prop[VASE] != VASE_WHOLE)
 508             game.fixed[VASE] = IS_FIXED;
 509     }
 510     int k = LIQUID();
 511     if (k == obj)
 512         obj = BOTTLE;
 513     if (obj == BOTTLE && k != NO_OBJECT)
 514         game.place[k] = LOC_NOWHERE;
 515     if (obj == CAGE && game.prop[BIRD] == BIRD_CAGED)
 516         drop(BIRD, game.loc);
 517     drop(obj, game.loc);
 518     if (obj != BIRD)
 519         return GO_CLEAROBJ;
 520     game.prop[BIRD] = BIRD_UNCAGED;
 521     if (FOREST(game.loc))
 522         game.prop[BIRD] = BIRD_FOREST_UNCAGED;
 523     return GO_CLEAROBJ;
 524 }
 525
 526 static int drink(token_t verb, obj_t obj)
 527 /*  Drink.  If no object, assume water and look for it here.  If water is in
 528  *  the bottle, drink that, else must be at a water loc, so drink stream. */
 529 {
 530     if (obj == NO_OBJECT && LIQLOC(game.loc) != WATER &&
 531         (LIQUID() != WATER || !HERE(BOTTLE))) {
 532         return GO_UNKNOWN;
 533     }
 534
 535     if (obj == BLOOD) {
 536         DESTROY(BLOOD);
 537         state_change(DRAGON, DRAGON_BLOODLESS);
 538         game.blooded = true;
 539         return GO_CLEAROBJ;
 540     }
 541
 542     if (obj != NO_OBJECT && obj != WATER) {
 543         rspeak(RIDICULOUS_ATTEMPT);
 544         return GO_CLEAROBJ;
 545     }
 546     if (LIQUID() == WATER && HERE(BOTTLE)) {
 547         game.place[WATER] = LOC_NOWHERE;
 548         state_change(BOTTLE, EMPTY_BOTTLE);
 549         return GO_CLEAROBJ;
 550     }
 551
 552     speak(actions[verb].message);
 553     return GO_CLEAROBJ;
 554 }
 555
 556 static int eat(token_t verb, obj_t obj)
 557 /*  Eat.  Intransitive: assume food if present, else ask what.  Transitive: food
 558  *  ok, some things lose appetite, rest are ridiculous. */
 559 {
 560     switch (obj) {
 561     case INTRANSITIVE:
 562         if (!HERE(FOOD))
 563             return GO_UNKNOWN;
 564     case FOOD:
 565         DESTROY(FOOD);
 566         rspeak(THANKS_DELICIOUS);
 567         break;
 568     case BIRD:
 569     case SNAKE:
 570     case CLAM:
 571     case OYSTER:
 572     case DWARF:
 573     case DRAGON:
 574     case TROLL:
 575     case BEAR:
 576     case OGRE:
 577         rspeak(LOST_APPETITE);
 578         break;
 579     default:
 580         speak(actions[verb].message);
 581     }
 582     return GO_CLEAROBJ;
 583 }
 584
 585 static int extinguish(token_t verb, obj_t obj)
 586 /* Extinguish.  Lamp, urn, dragon/volcano (nice try). */
 587 {
 588     if (obj == INTRANSITIVE) {
 589         if (HERE(LAMP) && game.prop[LAMP] == LAMP_BRIGHT)
 590             obj = LAMP;
 591         if (HERE(URN) && game.prop[URN] == URN_LIT)
 592             obj = URN;
 593         if (obj == INTRANSITIVE)
 594             return GO_UNKNOWN;
 595     }
 596
 597     if (obj == URN) {
 598         if (game.prop[URN] != URN_EMPTY) {
 599             state_change(URN, URN_DARK);
 600         } else {
 601             pspeak(URN, change, URN_DARK, true);
 602         }
 603         return GO_CLEAROBJ;
 604     }
 605
 606     if (obj == LAMP) {
 607         state_change(LAMP, LAMP_DARK);
 608         rspeak(DARK(game.loc) ?
 609                PITCH_DARK :
 610                NO_MESSAGE);
 611         return GO_CLEAROBJ;
 612     }
 613
 614     if (obj == DRAGON ||
 615         obj == VOLCANO) {
 616         rspeak(BEYOND_POWER);
 617         return GO_CLEAROBJ;
 618     }
 619
 620     speak(actions[verb].message);
 621     return GO_CLEAROBJ;
 622 }
 623
 624 static int feed(token_t verb, obj_t obj)
 625 /*  Feed.  If bird, no seed.  Snake, dragon, troll: quip.  If dwarf, make him
 626  *  mad.  Bear, special. */
 627 {
 628     switch (obj) {
 629     case BIRD:
 630         rspeak(BIRD_PINING);
 631         break;
 632     case DRAGON:
 633         if (game.prop[DRAGON] != DRAGON_BARS)
 634             rspeak(RIDICULOUS_ATTEMPT);
 635         else
 636             rspeak(NOTHING_EDIBLE);
 637         break;
 638     case SNAKE:
 639         if (!game.closed && HERE(BIRD)) {
 640             DESTROY(BIRD);
 641             rspeak(BIRD_DEVOURED);
 642         } else
 643             rspeak(NOTHING_EDIBLE);
 644         break;
 645     case TROLL:
 646         rspeak(TROLL_VICES);
 647         break;
 648     case DWARF:
 649         if (HERE(FOOD)) {
 650             game.dflag += 2;
 651             rspeak(REALLY_MAD);
 652         } else
 653             speak(actions[verb].message);
 654         break;
 655     case BEAR:
 656         if (game.prop[BEAR] == BEAR_DEAD) {
 657             rspeak(RIDICULOUS_ATTEMPT);
 658             break;
 659         }
 660         if (game.prop[BEAR] == UNTAMED_BEAR) {
 661             if (HERE(FOOD)) {
 662                 DESTROY(FOOD);
 663                 game.fixed[AXE] = IS_FREE;
 664                 game.prop[AXE] = AXE_HERE;
 665                 state_change(BEAR, SITTING_BEAR);
 666             } else
 667                 rspeak(NOTHING_EDIBLE);
 668             break;
 669         }
 670         speak(actions[verb].message);
 671         break;
 672     case OGRE:
 673         if (HERE(FOOD))
 674             rspeak(OGRE_FULL);
 675         else
 676             speak(actions[verb].message);
 677         break;
 678     default:
 679         rspeak(AM_GAME);
 680     }
 681     return GO_CLEAROBJ;
 682 }
 683
 684 int fill(token_t verb, obj_t obj)
 685 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 686  *  is nasty.) */
 687 {
 688     if (obj == VASE) {
 689         if (LIQLOC(game.loc) == NO_OBJECT) {
 690             rspeak(FILL_INVALID);
 691             return GO_CLEAROBJ;
 692         }
 693         if (!TOTING(VASE)) {
 694             rspeak(ARENT_CARRYING);
 695             return GO_CLEAROBJ;
 696         }
 697         rspeak(SHATTER_VASE);
 698         game.prop[VASE] = VASE_BROKEN;
 699         game.fixed[VASE] = IS_FIXED;
 700         drop(VASE, game.loc);
 701         return GO_CLEAROBJ;
 702     }
 703
 704     if (obj == URN) {
 705         if (game.prop[URN] != URN_EMPTY) {
 706             rspeak(FULL_URN);
 707             return GO_CLEAROBJ;
 708         }
 709         if (!HERE(BOTTLE)) {
 710             rspeak(FILL_INVALID);
 711             return GO_CLEAROBJ;
 712         }
 713         int k = LIQUID();
 714         switch (k) {
 715         case WATER:
 716             game.prop[BOTTLE] = EMPTY_BOTTLE;
 717             rspeak(WATER_URN);
 718             break;
 719         case OIL:
 720             game.prop[URN] = URN_DARK;
 721             game.prop[BOTTLE] = EMPTY_BOTTLE;
 722             rspeak(OIL_URN);
 723             break;
 724         case NO_OBJECT:
 725         default:
 726             rspeak(FILL_INVALID);
 727             return GO_CLEAROBJ;
 728         }
 729         game.place[k] = LOC_NOWHERE;
 730         return GO_CLEAROBJ;
 731     }
 732     if (obj != NO_OBJECT && obj != BOTTLE) {
 733         speak(actions[verb].message);
 734         return GO_CLEAROBJ;
 735     }
 736     if (obj == NO_OBJECT && !HERE(BOTTLE))
 737         return GO_UNKNOWN;
 738
 739     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 740         rspeak(URN_NOPOUR);
 741         return GO_CLEAROBJ;
 742     }
 743     if (LIQUID() != NO_OBJECT) {
 744         rspeak(BOTTLE_FULL);
 745         return GO_CLEAROBJ;
 746     }
 747     if (LIQLOC(game.loc) == NO_OBJECT) {
 748         rspeak(NO_LIQUID);
 749         return GO_CLEAROBJ;
 750     }
 751
 752     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 753                  ? OIL_BOTTLE
 754                  : WATER_BOTTLE);
 755     if (TOTING(BOTTLE))
 756         game.place[LIQUID()] = CARRIED;
 757     return GO_CLEAROBJ;
 758 }
 759
 760 static int find(token_t verb, obj_t obj)
 761 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 762 {
 763     if (TOTING(obj)) {
 764         rspeak(ALREADY_CARRYING);
 765         return GO_CLEAROBJ;
 766     }
 767
 768     if (game.closed) {
 769         rspeak(NEEDED_NEARBY);
 770         return GO_CLEAROBJ;
 771     }
 772
 773     if (AT(obj) ||
 774         (LIQUID() == obj && AT(BOTTLE)) ||
 775         obj == LIQLOC(game.loc) ||
 776         (obj == DWARF && atdwrf(game.loc) > 0)) {
 777         rspeak(YOU_HAVEIT);
 778         return GO_CLEAROBJ;
 779     }
 780
 781
 782     speak(actions[verb].message);
 783     return GO_CLEAROBJ;
 784 }
 785
 786 static int fly(token_t verb, obj_t obj)
 787 /* Fly.  Snide remarks unless hovering rug is here. */
 788 {
 789     if (obj == INTRANSITIVE) {
 790         if (!HERE(RUG)) {
 791             rspeak(FLAP_ARMS);
 792             return GO_CLEAROBJ;
 793         }
 794         if (game.prop[RUG] != RUG_HOVER) {
 795             rspeak(RUG_NOTHING2);
 796             return GO_CLEAROBJ;
 797         }
 798         obj = RUG;
 799     }
 800
 801     if (obj != RUG) {
 802         speak(actions[verb].message);
 803         return GO_CLEAROBJ;
 804     }
 805     if (game.prop[RUG] != RUG_HOVER) {
 806         rspeak(RUG_NOTHING1);
 807         return GO_CLEAROBJ;
 808     }
 809     game.oldlc2 = game.oldloc;
 810     game.oldloc = game.loc;
 811
 812     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 813         game.newloc = game.place[SAPPH];
 814         rspeak(RUG_GOES);
 815     } else {
 816         game.newloc = LOC_CLIFF;
 817         rspeak(RUG_RETURNS);
 818     }
 819     return GO_TERMINATE;
 820 }
 821
 822 static int inven(void)
 823 /* Inventory. If object, treat same as find.  Else report on current burden. */
 824 {
 825     bool empty = true;
 826     for (obj_t i = 1; i <= NOBJECTS; i++) {
 827         if (i == BEAR ||
 828             !TOTING(i))
 829             continue;
 830         if (empty) {
 831             rspeak(NOW_HOLDING);
 832             empty = false;
 833         }
 834         pspeak(i, touch, -1, false);
 835     }
 836     if (TOTING(BEAR))
 837         rspeak(TAME_BEAR);
 838     if (empty)
 839         rspeak(NO_CARRY);
 840     return GO_CLEAROBJ;
 841 }
 842
 843 static int light(token_t verb, obj_t obj)
 844 /*  Light.  Applicable only to lamp and urn. */
 845 {
 846     if (obj == INTRANSITIVE) {
 847         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0)
 848             obj = LAMP;
 849         if (HERE(URN) && game.prop[URN] == URN_DARK)
 850             obj =  URN;
 851         if (obj == INTRANSITIVE ||
 852             (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0 &&
 853              HERE(URN) && game.prop[URN] == URN_DARK))
 854             return GO_UNKNOWN;
 855     }
 856
 857     if (obj == URN) {
 858         state_change(URN, game.prop[URN] == URN_EMPTY ?
 859                      URN_EMPTY :
 860                      URN_LIT);
 861         return GO_CLEAROBJ;
 862     } else {
 863         if (obj != LAMP) {
 864             speak(actions[verb].message);
 865             return GO_CLEAROBJ;
 866         }
 867         if (game.limit < 0) {
 868             rspeak(LAMP_OUT);
 869             return GO_CLEAROBJ;
 870         }
 871         state_change(LAMP, LAMP_BRIGHT);
 872         if (game.wzdark)
 873             return GO_TOP;
 874         else
 875             return GO_CLEAROBJ;
 876     }
 877 }
 878
 879 static int listen(void)
 880 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 881 {
 882     long sound = locations[game.loc].sound;
 883     if (sound != SILENT) {
 884         rspeak(sound);
 885         if (!locations[game.loc].loud)
 886             rspeak(NO_MESSAGE);
 887         return GO_CLEAROBJ;
 888     }
 889     for (obj_t i = 1; i <= NOBJECTS; i++) {
 890         if (!HERE(i) ||
 891             objects[i].sounds[0] == NULL ||
 892             game.prop[i] < 0)
 893             continue;
 894         int mi =  game.prop[i];
 895         /* FIXME: Weird magic on object states */
 896         if (i == BIRD)
 897             mi += 3 * game.blooded;
 898         long packed_zzword = token_to_packed(game.zzword);
 899         pspeak(i, hear, mi, true, packed_zzword);
 900         rspeak(NO_MESSAGE);
 901         if (i == BIRD && mi == BIRD_ENDSTATE)
 902             DESTROY(BIRD);
 903         return GO_CLEAROBJ;
 904     }
 905     rspeak(ALL_SILENT);
 906     return GO_CLEAROBJ;
 907 }
 908
 909 static int lock(token_t verb, obj_t obj)
 910 /* Lock, unlock, no object given.  Assume various things if present. */
 911 {
 912     if (obj == INTRANSITIVE) {
 913         if (HERE(CLAM))
 914             obj = CLAM;
 915         if (HERE(OYSTER))
 916             obj = OYSTER;
 917         if (AT(DOOR))
 918             obj = DOOR;
 919         if (AT(GRATE))
 920             obj = GRATE;
 921         if (HERE(CHAIN))
 922             obj = CHAIN;
 923         if (obj == INTRANSITIVE) {
 924             rspeak(NOTHING_LOCKED);
 925             return GO_CLEAROBJ;
 926         }
 927     }
 928
 929     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 930      *  and for chain. */
 931
 932     switch (obj) {
 933     case CHAIN:
 934         if (HERE(KEYS)) {
 935             return chain(verb);
 936         } else
 937             rspeak(NO_KEYS);
 938         break;
 939     case GRATE:
 940         if (HERE(KEYS)) {
 941             if (game.closng) {
 942                 rspeak(EXIT_CLOSED);
 943                 if (!game.panic)
 944                     game.clock2 = PANICTIME;
 945                 game.panic = true;
 946             } else {
 947                 state_change(GRATE, (verb == LOCK) ?
 948                              GRATE_CLOSED :
 949                              GRATE_OPEN);
 950             }
 951         } else
 952             rspeak(NO_KEYS);
 953         break;
 954     case CLAM:
 955         if (verb == LOCK)
 956             rspeak(HUH_MAN);
 957         else if (!TOTING(TRIDENT))
 958             rspeak(OYSTER_OPENER);
 959         else {
 960             DESTROY(CLAM);
 961             drop(OYSTER, game.loc);
 962             drop(PEARL, LOC_CULDESAC);
 963             rspeak(PEARL_FALLS);
 964         }
 965         break;
 966     case OYSTER:
 967         if (verb == LOCK)
 968             rspeak(HUH_MAN);
 969         else
 970             rspeak(OYSTER_OPENER);
 971         break;
 972     case DOOR:
 973         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
 974         break;
 975     case CAGE:
 976         rspeak( NO_LOCK);
 977         break;
 978     case KEYS:
 979         rspeak(CANNOT_UNLOCK);
 980         break;
 981     default:
 982         speak(actions[verb].message);
 983     }
 984
 985     return GO_CLEAROBJ;
 986 }
 987
 988 static int pour(token_t verb, obj_t obj)
 989 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
 990  *  special tests for pouring water or oil on plant or rusty door. */
 991 {
 992     if (obj == BOTTLE ||
 993         obj == NO_OBJECT)
 994         obj = LIQUID();
 995     if (obj == NO_OBJECT)
 996         return GO_UNKNOWN;
 997     if (!TOTING(obj)) {
 998         speak(actions[verb].message);
 999         return GO_CLEAROBJ;
1000     }
1001
1002     if (obj != OIL && obj != WATER) {
1003         rspeak(CANT_POUR);
1004         return GO_CLEAROBJ;
1005     }
1006     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1007         return fill(verb, URN);
1008     game.prop[BOTTLE] = EMPTY_BOTTLE;
1009     game.place[obj] = LOC_NOWHERE;
1010     if (!(AT(PLANT) ||
1011           AT(DOOR))) {
1012         rspeak(GROUND_WET);
1013         return GO_CLEAROBJ;
1014     }
1015     if (!AT(DOOR)) {
1016         if (obj == WATER) {
1017             /* cycle through the three plant states */
1018             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1019             game.prop[PLANT2] = game.prop[PLANT];
1020             return GO_MOVE;
1021         } else {
1022             rspeak(SHAKING_LEAVES);
1023             return GO_CLEAROBJ;
1024         }
1025     } else {
1026         state_change(DOOR, (obj == OIL) ?
1027                      DOOR_UNRUSTED :
1028                      DOOR_RUSTED);
1029         return GO_CLEAROBJ;
1030     }
1031 }
1032
1033 static int quit(void)
1034 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1035 {
1036     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1037         terminate(quitgame);
1038     return GO_CLEAROBJ;
1039 }
1040
1041 static int read(struct command_t command)
1042 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1043 {
1044     if (command.obj == INTRANSITIVE) {
1045         command.obj = NO_OBJECT;
1046         for (int i = 1; i <= NOBJECTS; i++) {
1047             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1048                 command.obj = command.obj * NOBJECTS + i;
1049         }
1050         if (command.obj > NOBJECTS ||
1051             command.obj == NO_OBJECT ||
1052             DARK(game.loc))
1053             return GO_UNKNOWN;
1054     }
1055
1056     if (DARK(game.loc)) {
1057         sspeak(NO_SEE, command.raw1);
1058     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1059         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1060     } else if (objects[command.obj].texts[0] == NULL ||
1061                game.prop[command.obj] == STATE_NOTFOUND) {
1062         speak(actions[command.verb].message);
1063     } else
1064         pspeak(command.obj, study, game.prop[command.obj], true);
1065     return GO_CLEAROBJ;
1066 }
1067
1068 static int reservoir(void)
1069 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1070 {
1071     if (!AT(RESER) && game.loc != LOC_RESBOTTOM) {
1072         rspeak(NOTHING_HAPPENS);
1073         return GO_CLEAROBJ;
1074     } else {
1075         state_change(RESER,
1076                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1077         if (AT(RESER))
1078             return GO_CLEAROBJ;
1079         else {
1080             game.oldlc2 = game.loc;
1081             game.newloc = LOC_NOWHERE;
1082             rspeak(NOT_BRIGHT);
1083             return GO_TERMINATE;
1084         }
1085     }
1086 }
1087
1088 static int rub(token_t verb, obj_t obj)
1089 /* Rub.  Yields various snide remarks except for lit urn. */
1090 {
1091     if (obj == URN && game.prop[URN] == URN_LIT) {
1092         DESTROY(URN);
1093         drop(AMBER, game.loc);
1094         game.prop[AMBER] = AMBER_IN_ROCK;
1095         --game.tally;
1096         drop(CAVITY, game.loc);
1097         rspeak(URN_GENIES);
1098     } else if (obj != LAMP) {
1099         rspeak(PECULIAR_NOTHING);
1100     } else {
1101         speak(actions[verb].message);
1102     }
1103     return GO_CLEAROBJ;
1104 }
1105
1106 static int say(struct command_t *command)
1107 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1108 {
1109     if (command->wd2 > 0) {
1110         command->wd1 = command->wd2;
1111         strcpy(command->raw1, command->raw2);
1112     }
1113     char word1[TOKLEN + 1];
1114     packed_to_token(command->wd1, word1);
1115     int wd = (int) get_vocab_id(word1);
1116     if (wd == MOTION_WORD(XYZZY) ||
1117         wd == MOTION_WORD(PLUGH) ||
1118         wd == MOTION_WORD(PLOVER) ||
1119         wd == ACTION_WORD(FEE) ||
1120         wd == ACTION_WORD(FIE) ||
1121         wd == ACTION_WORD(FOE) ||
1122         wd == ACTION_WORD(FOO) ||
1123         wd == ACTION_WORD(FUM) ||
1124         wd == ACTION_WORD(PART)) {
1125         /* FIXME: scribbles on the interpreter's command block */
1126         wordclear(&command->wd2);
1127         return GO_LOOKUP;
1128     }
1129     sspeak(OKEY_DOKEY, command->raw1);
1130     return GO_CLEAROBJ;
1131 }
1132
1133 static int throw_support(long spk)
1134 {
1135     rspeak(spk);
1136     drop(AXE, game.loc);
1137     return GO_MOVE;
1138 }
1139
1140 static int throw (struct command_t *command)
1141 /*  Throw.  Same as discard unless axe.  Then same as attack except
1142  *  ignore bird, and if dwarf is present then one might be killed.
1143  *  (Only way to do so!)  Axe also special for dragon, bear, and
1144  *  troll.  Treasures special for troll. */
1145 {
1146     if (!TOTING(command->obj)) {
1147         speak(actions[command->verb].message);
1148         return GO_CLEAROBJ;
1149     }
1150     if (objects[command->obj].is_treasure && AT(TROLL)) {
1151         /*  Snarf a treasure for the troll. */
1152         drop(command->obj, LOC_NOWHERE);
1153         move(TROLL, LOC_NOWHERE);
1154         move(TROLL + NOBJECTS, LOC_NOWHERE);
1155         drop(TROLL2, objects[TROLL].plac);
1156         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1157         juggle(CHASM);
1158         rspeak(TROLL_SATISFIED);
1159         return GO_CLEAROBJ;
1160     }
1161     if (command->obj == FOOD && HERE(BEAR)) {
1162         /* But throwing food is another story. */
1163         command->obj = BEAR;
1164         return (feed(command->verb, command->obj));
1165     }
1166     if (command->obj != AXE)
1167         return (discard(command->verb, command->obj));
1168     else {
1169         if (atdwrf(game.loc) <= 0) {
1170             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1171                 return throw_support(DRAGON_SCALES);
1172             if (AT(TROLL))
1173                 return throw_support(TROLL_RETURNS);
1174             else if (AT(OGRE))
1175                 return throw_support(OGRE_DODGE);
1176             else if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1177                 /* This'll teach him to throw the axe at the bear! */
1178                 drop(AXE, game.loc);
1179                 game.fixed[AXE] = IS_FIXED;
1180                 juggle(BEAR);
1181                 state_change(AXE, AXE_LOST);
1182                 return GO_CLEAROBJ;
1183             }
1184             command->obj = NO_OBJECT;
1185             return (attack(command));
1186         }
1187
1188         if (randrange(NDWARVES + 1) < game.dflag) {
1189             return throw_support(DWARF_DODGES);
1190         } else {
1191             long i = atdwrf(game.loc);
1192             game.dseen[i] = false;
1193             game.dloc[i] = LOC_NOWHERE;
1194             return throw_support((++game.dkill == 1) ?
1195                                  DWARF_SMOKE :
1196                                  KILLED_DWARF);
1197         }
1198     }
1199 }
1200
1201 static int wake(token_t verb, obj_t obj)
1202 /* Wake.  Only use is to disturb the dwarves. */
1203 {
1204     if (obj != DWARF ||
1205         !game.closed) {
1206         speak(actions[verb].message);
1207         return GO_CLEAROBJ;
1208     } else {
1209         rspeak(PROD_DWARF);
1210         return GO_DWARFWAKE;
1211     }
1212 }
1213
1214 static int wave(token_t verb, obj_t obj)
1215 /* Wave.  No effect unless waving rod at fissure or at bird. */
1216 {
1217     if (obj != ROD ||
1218         !TOTING(obj) ||
1219         (!HERE(BIRD) &&
1220          (game.closng ||
1221           !AT(FISSURE)))) {
1222         speak(((!TOTING(obj)) && (obj != ROD ||
1223                                   !TOTING(ROD2))) ?
1224               arbitrary_messages[ARENT_CARRYING] :
1225               actions[verb].message);
1226         return GO_CLEAROBJ;
1227     }
1228
1229     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] == STATE_NOTFOUND) {
1230         drop(JADE, game.loc);
1231         game.prop[JADE] = STATE_FOUND;
1232         --game.tally;
1233         rspeak(NECKLACE_FLY);
1234         return GO_CLEAROBJ;
1235     } else {
1236         if (game.closed) {
1237             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1238                    CAGE_FLY :
1239                    FREE_FLY);
1240             return GO_DWARFWAKE;
1241         }
1242         if (game.closng ||
1243             !AT(FISSURE)) {
1244             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1245                    CAGE_FLY :
1246                    FREE_FLY);
1247             return GO_CLEAROBJ;
1248         }
1249         if (HERE(BIRD))
1250             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1251                    CAGE_FLY :
1252                    FREE_FLY);
1253
1254         state_change(FISSURE,
1255                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1256         return GO_CLEAROBJ;
1257     }
1258 }
1259
1260 int action(struct command_t *command)
1261 /*  Analyse a verb.  Remember what it was, go back for object if second word
1262  *  unless verb is "say", which snarfs arbitrary second word.
1263  */
1264 {
1265     if (command->part == unknown) {
1266         /*  Analyse an object word.  See if the thing is here, whether
1267          *  we've got a verb yet, and so on.  Object must be here
1268          *  unless verb is "find" or "invent(ory)" (and no new verb
1269          *  yet to be analysed).  Water and oil are also funny, since
1270          *  they are never actually dropped at any location, but might
1271          *  be here inside the bottle or urn or as a feature of the
1272          *  location. */
1273         if (HERE(command->obj))
1274             /* FALL THROUGH */;
1275         else if (command->obj == GRATE) {
1276             if (game.loc == LOC_START ||
1277                 game.loc == LOC_VALLEY ||
1278                 game.loc == LOC_SLIT) {
1279                 command->obj = DPRSSN;
1280             }
1281             if (game.loc == LOC_COBBLE ||
1282                 game.loc == LOC_DEBRIS ||
1283                 game.loc == LOC_AWKWARD ||
1284                 game.loc == LOC_BIRD ||
1285                 game.loc == LOC_PITTOP) {
1286                 command->obj = ENTRNC;
1287             }
1288         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1289             /* FALL THROUGH */;
1290         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1291                  command->obj == LIQLOC(game.loc))
1292             /* FALL THROUGH */;
1293         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != 0) {
1294             command->obj = URN;
1295             /* FALL THROUGH */;
1296         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != 0) {
1297             command->obj = PLANT2;
1298             /* FALL THROUGH */;
1299         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1300             game.knfloc = -1;
1301             rspeak(KNIVES_VANISH);
1302             return GO_CLEAROBJ;
1303         } else if (command->obj == ROD && HERE(ROD2)) {
1304             command->obj = ROD2;
1305             /* FALL THROUGH */;
1306         } else if ((command->verb == FIND ||
1307                     command->verb == INVENTORY) && command->wd2 <= 0)
1308             /* FALL THROUGH */;
1309         else {
1310             sspeak(NO_SEE, command->raw1);
1311             return GO_CLEAROBJ;
1312         }
1313
1314         if (command->wd2 > 0)
1315             return GO_WORD2;
1316         if (command->verb != 0)
1317             command->part = transitive;
1318     }
1319
1320     switch (command->part) {
1321     case intransitive:
1322         if (command->wd2 > 0 && command->verb != SAY)
1323             return GO_WORD2;
1324         if (command->verb == SAY)
1325             command->obj = command->wd2;
1326         if (command->obj == NO_OBJECT ||
1327             command->obj == INTRANSITIVE) {
1328             /*  Analyse an intransitive verb (ie, no object given yet). */
1329             switch (command->verb) {
1330             case CARRY:
1331                 return vcarry(command->verb, INTRANSITIVE);
1332             case  DROP:
1333                 return GO_UNKNOWN;
1334             case  SAY:
1335                 return GO_UNKNOWN;
1336             case  UNLOCK:
1337                 return lock(command->verb, INTRANSITIVE);
1338             case  NOTHING: {
1339                 rspeak(OK_MAN);
1340                 return (GO_CLEAROBJ);
1341             }
1342             case  LOCK:
1343                 return lock(command->verb, INTRANSITIVE);
1344             case  LIGHT:
1345                 return light(command->verb, INTRANSITIVE);
1346             case  EXTINGUISH:
1347                 return extinguish(command->verb, INTRANSITIVE);
1348             case  WAVE:
1349                 return GO_UNKNOWN;
1350             case  TAME:
1351                 return GO_UNKNOWN;
1352             case GO: {
1353                 speak(actions[command->verb].message);
1354                 return GO_CLEAROBJ;
1355             }
1356             case ATTACK:
1357                 return attack(command);
1358             case POUR:
1359                 return pour(command->verb, command->obj);
1360             case EAT:
1361                 return eat(command->verb, INTRANSITIVE);
1362             case DRINK:
1363                 return drink(command->verb, command->obj);
1364             case RUB:
1365                 return GO_UNKNOWN;
1366             case THROW:
1367                 return GO_UNKNOWN;
1368             case QUIT:
1369                 return quit();
1370             case FIND:
1371                 return GO_UNKNOWN;
1372             case INVENTORY:
1373                 return inven();
1374             case FEED:
1375                 return GO_UNKNOWN;
1376             case FILL:
1377                 return fill(command->verb, command->obj);
1378             case BLAST:
1379                 blast();
1380                 return GO_CLEAROBJ;
1381             case SCORE:
1382                 score(scoregame);
1383                 return GO_CLEAROBJ;
1384             case FEE:
1385             case FIE:
1386             case FOE:
1387             case FOO:
1388             case FUM:
1389                 return bigwords(command->id1);
1390             case BRIEF:
1391                 return brief();
1392             case READ:
1393                 command->obj = INTRANSITIVE;
1394                 return read(*command);
1395             case BREAK:
1396                 return GO_UNKNOWN;
1397             case WAKE:
1398                 return GO_UNKNOWN;
1399             case SAVE:
1400                 return suspend();
1401             case RESUME:
1402                 return resume();
1403             case FLY:
1404                 return fly(command->verb, INTRANSITIVE);
1405             case LISTEN:
1406                 return listen();
1407             case PART:
1408                 return reservoir();
1409             default:
1410                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1411             }
1412         }
1413     /* FALLTHRU */
1414     case transitive:
1415         /*  Analyse a transitive verb. */
1416         switch (command->verb) {
1417         case  CARRY:
1418             return vcarry(command->verb, command->obj);
1419         case  DROP:
1420             return discard(command->verb, command->obj);
1421         case  SAY:
1422             return say(command);
1423         case  UNLOCK:
1424             return lock(command->verb, command->obj);
1425         case  NOTHING: {
1426             rspeak(OK_MAN);
1427             return (GO_CLEAROBJ);
1428         }
1429         case  LOCK:
1430             return lock(command->verb, command->obj);
1431         case LIGHT:
1432             return light(command->verb, command->obj);
1433         case EXTINGUISH:
1434             return extinguish(command->verb, command->obj);
1435         case WAVE:
1436             return wave(command->verb, command->obj);
1437         case TAME: {
1438             speak(actions[command->verb].message);
1439             return GO_CLEAROBJ;
1440         }
1441         case GO: {
1442             speak(actions[command->verb].message);
1443             return GO_CLEAROBJ;
1444         }
1445         case ATTACK:
1446             return attack(command);
1447         case POUR:
1448             return pour(command->verb, command->obj);
1449         case EAT:
1450             return eat(command->verb, command->obj);
1451         case DRINK:
1452             return drink(command->verb, command->obj);
1453         case RUB:
1454             return rub(command->verb, command->obj);
1455         case THROW:
1456             return throw (command);
1457         case QUIT: {
1458             speak(actions[command->verb].message);
1459             return GO_CLEAROBJ;
1460         }
1461         case FIND:
1462             return find(command->verb, command->obj);
1463         case INVENTORY:
1464             return find(command->verb, command->obj);
1465         case FEED:
1466             return feed(command->verb, command->obj);
1467         case FILL:
1468             return fill(command->verb, command->obj);
1469         case BLAST:
1470             blast();
1471             return GO_CLEAROBJ;
1472         case SCORE: {
1473             speak(actions[command->verb].message);
1474             return GO_CLEAROBJ;
1475         }
1476         case FEE:
1477         case FIE:
1478         case FOE:
1479         case FOO:
1480         case FUM: {
1481             speak(actions[command->verb].message);
1482             return GO_CLEAROBJ;
1483         }
1484         case BRIEF: {
1485             speak(actions[command->verb].message);
1486             return GO_CLEAROBJ;
1487         }
1488         case READ:
1489             return read(*command);
1490         case BREAK:
1491             return vbreak(command->verb, command->obj);
1492         case WAKE:
1493             return wake(command->verb, command->obj);
1494         case SAVE: {
1495             speak(actions[command->verb].message);
1496             return GO_CLEAROBJ;
1497         }
1498         case RESUME: {
1499             speak(actions[command->verb].message);
1500             return GO_CLEAROBJ;
1501         }
1502         case FLY:
1503             return fly(command->verb, command->obj);
1504         case LISTEN: {
1505             speak(actions[command->verb].message);
1506             return GO_CLEAROBJ;
1507         }
1508         case PART:
1509             return reservoir();
1510         default:
1511             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1512         }
1513     case unknown:
1514         /* Unknown verb, couldn't deduce object - might need hint */
1515         sspeak(WHAT_DO, command->raw1);
1516         return GO_CHECKHINT;
1517     default:
1518         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1519     }
1520 }