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(verb_t, obj_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     verb_t verb = command->verb;
  16     obj_t obj = command->obj;
  17
  18     if (obj == INTRANSITIVE) {
  19         int changes = 0;
  20         if (atdwrf(game.loc) > 0) {
  21             obj = DWARF;
  22             ++changes;
  23         }
  24         if (HERE(SNAKE)) {
  25             obj = SNAKE;
  26             ++changes;
  27         }
  28         if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
  29             obj = DRAGON;
  30             ++changes;
  31         }
  32         if (AT(TROLL)) {
  33             obj = TROLL;
  34             ++changes;
  35         }
  36         if (AT(OGRE)) {
  37             obj = OGRE;
  38             ++changes;
  39         }
  40         if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
  41             obj = BEAR;
  42             ++changes;
  43         }
  44         /* check for low-priority targets */
  45         if (obj == INTRANSITIVE) {
  46             /* Can't attack bird or machine by throwing axe. */
  47             if (HERE(BIRD) && verb != THROW) {
  48                 obj = BIRD;
  49                 ++changes;
  50             }
  51             if (HERE(VEND) && verb != THROW) {
  52                 obj = VEND;
  53                 ++changes;
  54             }
  55             /* Clam and oyster both treated as clam for intransitive case;
  56              * no harm done. */
  57             if (HERE(CLAM) || HERE(OYSTER)) {
  58                 obj = CLAM;
  59                 ++changes;
  60             }
  61         }
  62         if (changes >= 2)
  63             return GO_UNKNOWN;
  64     }
  65
  66     if (obj == BIRD) {
  67         if (game.closed) {
  68             rspeak(UNHAPPY_BIRD);
  69         } else {
  70             DESTROY(BIRD);
  71             rspeak(BIRD_DEAD);
  72         }
  73         return GO_CLEAROBJ;
  74     }
  75     if (obj == VEND) {
  76         state_change(VEND,
  77                      game.prop[VEND] == VEND_BLOCKS ? VEND_UNBLOCKS : VEND_BLOCKS);
  78         return GO_CLEAROBJ;
  79     }
  80
  81     if (obj == BEAR) {
  82         switch (game.prop[BEAR]) {
  83         case UNTAMED_BEAR:
  84             rspeak(BEAR_HANDS);
  85             break;
  86         case SITTING_BEAR:
  87             rspeak(BEAR_CONFUSED);
  88             break;
  89         case CONTENTED_BEAR:
  90             rspeak(BEAR_CONFUSED);
  91             break;
  92         case BEAR_DEAD:
  93             rspeak(ALREADY_DEAD);
  94             break;
  95         }
  96         return GO_CLEAROBJ;
  97     }
  98     if (obj == DRAGON && game.prop[DRAGON] == DRAGON_BARS) {
  99         /*  Fun stuff for dragon.  If he insists on attacking it, win!
 100          *  Set game.prop to dead, move dragon to central loc (still
 101          *  fixed), move rug there (not fixed), and move him there,
 102          *  too.  Then do a null motion to get new description. */
 103         rspeak(BARE_HANDS_QUERY);
 104         if (!silent_yes()) {
 105             speak(arbitrary_messages[NASTY_DRAGON]);
 106             return GO_MOVE;
 107         }
 108         state_change(DRAGON, DRAGON_DEAD);
 109         game.prop[RUG] = RUG_FLOOR;
 110         /* Hardcoding LOC_SECRET5 as the dragon's death location is ugly.
 111          * The way it was computed before was worse; it depended on the
 112          * two dragon locations being LOC_SECRET4 and LOC_SECRET6 and
 113          * LOC_SECRET5 being right between them.
 114          */
 115         move(DRAGON + NOBJECTS, IS_FIXED);
 116         move(RUG + NOBJECTS, IS_FREE);
 117         move(DRAGON, LOC_SECRET5);
 118         move(RUG, LOC_SECRET5);
 119         drop(BLOOD, LOC_SECRET5);
 120         for (obj_t i = 1; i <= NOBJECTS; i++) {
 121             if (game.place[i] == objects[DRAGON].plac ||
 122                 game.place[i] == objects[DRAGON].fixd)
 123                 move(i, LOC_SECRET5);
 124         }
 125         game.loc = LOC_SECRET5;
 126         return GO_MOVE;
 127     }
 128
 129     if (obj == OGRE) {
 130         rspeak(OGRE_DODGE);
 131         if (atdwrf(game.loc) == 0)
 132             return GO_CLEAROBJ;
 133
 134         rspeak(KNIFE_THROWN);
 135         DESTROY(OGRE);
 136         int dwarves = 0;
 137         for (int i = 1; i < PIRATE; i++) {
 138             if (game.dloc[i] == game.loc) {
 139                 ++dwarves;
 140                 game.dloc[i] = LOC_LONGWEST;
 141                 game.dseen[i] = false;
 142             }
 143         }
 144         rspeak((dwarves > 1) ?
 145                OGRE_PANIC1 :
 146                OGRE_PANIC2);
 147         return GO_CLEAROBJ;
 148     }
 149
 150     switch (obj) {
 151     case INTRANSITIVE:
 152         rspeak(NO_TARGET);
 153         break;
 154     case CLAM:
 155     case OYSTER:
 156         rspeak(SHELL_IMPERVIOUS);
 157         break;
 158     case SNAKE:
 159         rspeak(SNAKE_WARNING);
 160         break;
 161     case DWARF:
 162         if (game.closed) {
 163             return GO_DWARFWAKE;
 164         }
 165         rspeak(BARE_HANDS_QUERY);
 166         break;
 167     case DRAGON:
 168         rspeak(ALREADY_DEAD);
 169         break;
 170     case TROLL:
 171         rspeak(ROCKY_TROLL);
 172         break;
 173     default:
 174         speak(actions[verb].message);
 175     }
 176     return GO_CLEAROBJ;
 177 }
 178
 179 static int bigwords(long id)
 180 /*  FEE FIE FOE FOO (AND FUM).  Advance to next state if given in proper order.
 181  *  Look up foo in special section of vocab to determine which word we've got.
 182  *  Last word zips the eggs back to the giant room (unless already there). */
 183 {
 184     if ((game.foobar == WORD_EMPTY && id == FEE) ||
 185         (game.foobar == FEE && id == FIE) ||
 186         (game.foobar == FIE && id == FOE) ||
 187         (game.foobar == FOE && id == FOO) ||
 188         (game.foobar == FOE && id == FUM)) {
 189         game.foobar = id;
 190         if ((id != FOO) && (id != FUM)) {
 191             rspeak(OK_MAN);
 192             return GO_CLEAROBJ;
 193         }
 194         game.foobar = WORD_EMPTY;
 195         if (game.place[EGGS] == objects[EGGS].plac ||
 196             (TOTING(EGGS) && game.loc == objects[EGGS].plac)) {
 197             rspeak(NOTHING_HAPPENS);
 198             return GO_CLEAROBJ;
 199         } else {
 200             /*  Bring back troll if we steal the eggs back from him before
 201              *  crossing. */
 202             if (game.place[EGGS] == LOC_NOWHERE && game.place[TROLL] == LOC_NOWHERE && game.prop[TROLL] == TROLL_UNPAID)
 203                 game.prop[TROLL] = TROLL_PAIDONCE;
 204             int k;
 205             if (HERE(EGGS))
 206                 k = EGGS_VANISHED;
 207             else if (game.loc == objects[EGGS].plac)
 208                 k = EGGS_HERE;
 209             else
 210                 k = EGGS_DONE;
 211             move(EGGS, objects[EGGS].plac);
 212             pspeak(EGGS, look, k, true);
 213             return GO_CLEAROBJ;
 214         }
 215     } else {
 216         if (game.loc == LOC_GIANTROOM) {
 217             rspeak(START_OVER);
 218         } else {
 219             /* This is new begavior in Open Adventure - sounds better when
 220              * player isn't in the Giant Room. */
 221             rspeak(WELL_POINTLESS);
 222         }
 223         game.foobar = WORD_EMPTY;
 224         return GO_CLEAROBJ;
 225     }
 226 }
 227
 228 static void blast(void)
 229 /*  Blast.  No effect unless you've got dynamite, which is a neat trick! */
 230 {
 231     if (game.prop[ROD2] == STATE_NOTFOUND ||
 232         !game.closed)
 233         rspeak(REQUIRES_DYNAMITE);
 234     else {
 235         if (HERE(ROD2)) {
 236             game.bonus = splatter;
 237             rspeak(SPLATTER_MESSAGE);
 238         } else if (game.loc == LOC_NE) {
 239             game.bonus = defeat;
 240             rspeak(DEFEAT_MESSAGE);
 241         } else {
 242             game.bonus = victory;
 243             rspeak(VICTORY_MESSAGE);
 244         }
 245         terminate(endgame);
 246     }
 247 }
 248
 249 static int vbreak(verb_t verb, obj_t obj)
 250 /*  Break.  Only works for mirror in repository and, of course, the vase. */
 251 {
 252     switch (obj) {
 253     case MIRROR:
 254         if (game.closed) {
 255             state_change(MIRROR, MIRROR_BROKEN);
 256             return GO_DWARFWAKE;
 257         } else {
 258             rspeak(TOO_FAR);
 259             break;
 260         }
 261     case VASE:
 262         if (game.prop[VASE] == VASE_WHOLE) {
 263             if (TOTING(VASE))
 264                 drop(VASE, game.loc);
 265             state_change(VASE, VASE_BROKEN);
 266             game.fixed[VASE] = IS_FIXED;
 267             break;
 268         }
 269     default:
 270         speak(actions[verb].message);
 271     }
 272     return (GO_CLEAROBJ);
 273 }
 274
 275 static int brief(void)
 276 /*  Brief.  Intransitive only.  Suppress long descriptions after first time. */
 277 {
 278     game.abbnum = 10000;
 279     game.detail = 3;
 280     rspeak(BRIEF_CONFIRM);
 281     return GO_CLEAROBJ;
 282 }
 283
 284 static int vcarry(verb_t verb, obj_t obj)
 285 /*  Carry an object.  Special cases for bird and cage (if bird in cage, can't
 286  *  take one without the other).  Liquids also special, since they depend on
 287  *  status of bottle.  Also various side effects, etc. */
 288 {
 289     if (obj == INTRANSITIVE) {
 290         /*  Carry, no object given yet.  OK if only one object present. */
 291         if (game.atloc[game.loc] == NO_OBJECT ||
 292             game.link[game.atloc[game.loc]] != 0 ||
 293             atdwrf(game.loc) > 0)
 294             return GO_UNKNOWN;
 295         obj = game.atloc[game.loc];
 296     }
 297
 298     if (TOTING(obj)) {
 299         speak(actions[verb].message);
 300         return GO_CLEAROBJ;
 301     }
 302
 303     if (obj == MESSAG) {
 304         rspeak(REMOVE_MESSAGE);
 305         DESTROY(MESSAG);
 306         return GO_CLEAROBJ;
 307     }
 308
 309     if (game.fixed[obj] != IS_FREE) {
 310         switch (obj) {
 311         case PLANT:
 312             /* Next guard tests whether plant is tiny or stashed */
 313             rspeak(game.prop[PLANT] <= PLANT_THIRSTY ? DEEP_ROOTS : YOU_JOKING);
 314             break;
 315         case BEAR:
 316             rspeak( game.prop[BEAR] == SITTING_BEAR ? BEAR_CHAINED : YOU_JOKING);
 317             break;
 318         case CHAIN:
 319             rspeak( game.prop[BEAR] != UNTAMED_BEAR ? STILL_LOCKED : YOU_JOKING);
 320             break;
 321         case RUG:
 322             rspeak(game.prop[RUG] == RUG_HOVER ? RUG_HOVERS : YOU_JOKING);
 323             break;
 324         case URN:
 325             rspeak(URN_NOBUDGE);
 326             break;
 327         case CAVITY:
 328             rspeak(DOUGHNUT_HOLES);
 329             break;
 330         case BLOOD:
 331             rspeak(FEW_DROPS);
 332             break;
 333         case SIGN:
 334             rspeak(HAND_PASSTHROUGH);
 335             break;
 336         default:
 337             rspeak(YOU_JOKING);
 338         }
 339         return GO_CLEAROBJ;
 340     }
 341
 342     if (obj == WATER ||
 343         obj == OIL) {
 344         if (!HERE(BOTTLE) ||
 345             LIQUID() != obj) {
 346             if (!TOTING(BOTTLE)) {
 347                 rspeak(NO_CONTAINER);
 348                 return GO_CLEAROBJ;
 349             }
 350             if (game.prop[BOTTLE] == EMPTY_BOTTLE) {
 351                 return (fill(verb, BOTTLE));
 352             } else
 353                 rspeak(BOTTLE_FULL);
 354             return GO_CLEAROBJ;
 355         }
 356         obj = BOTTLE;
 357     }
 358
 359     if (game.holdng >= INVLIMIT) {
 360         rspeak(CARRY_LIMIT);
 361         return GO_CLEAROBJ;
 362
 363     }
 364
 365     if (obj == BIRD && game.prop[BIRD] != BIRD_CAGED && STASHED(BIRD) != BIRD_CAGED) {
 366         if (game.prop[BIRD] == BIRD_FOREST_UNCAGED) {
 367             DESTROY(BIRD);
 368             rspeak(BIRD_CRAP);
 369             return GO_CLEAROBJ;
 370         }
 371         if (!TOTING(CAGE)) {
 372             rspeak(CANNOT_CARRY);
 373             return GO_CLEAROBJ;
 374         }
 375         if (TOTING(ROD)) {
 376             rspeak(BIRD_EVADES);
 377             return GO_CLEAROBJ;
 378         }
 379         game.prop[BIRD] = BIRD_CAGED;
 380     }
 381     if ((obj == BIRD ||
 382          obj == CAGE) &&
 383         (game.prop[BIRD] == BIRD_CAGED || STASHED(BIRD) == BIRD_CAGED)) {
 384         /* expression maps BIRD to CAGE and CAGE to BIRD */
 385         carry(BIRD + CAGE - obj, game.loc);
 386     }
 387
 388     carry(obj, game.loc);
 389
 390     if (obj == BOTTLE && LIQUID() != NO_OBJECT)
 391         game.place[LIQUID()] = CARRIED;
 392
 393     if (GSTONE(obj) && game.prop[obj] != STATE_FOUND) {
 394         game.prop[obj] = STATE_FOUND;
 395         game.prop[CAVITY] = CAVITY_EMPTY;
 396     }
 397     rspeak(OK_MAN);
 398     return GO_CLEAROBJ;
 399 }
 400
 401 static int chain(verb_t verb)
 402 /* Do something to the bear's chain */
 403 {
 404     if (verb != LOCK) {
 405         if (game.prop[BEAR] == UNTAMED_BEAR) {
 406             rspeak(BEAR_BLOCKS);
 407             return GO_CLEAROBJ;
 408         }
 409         if (game.prop[CHAIN] == CHAIN_HEAP) {
 410             rspeak(ALREADY_UNLOCKED);
 411             return GO_CLEAROBJ;
 412         }
 413         game.prop[CHAIN] = CHAIN_HEAP;
 414         game.fixed[CHAIN] = IS_FREE;
 415         if (game.prop[BEAR] != BEAR_DEAD)
 416             game.prop[BEAR] = CONTENTED_BEAR;
 417
 418         switch (game.prop[BEAR]) {
 419         // LCOV_EXCL_START
 420         case BEAR_DEAD:
 421             /* Can't be reached as long as the only way for the bear to die
 422              * is from a bridge collapse. Leave in in case this changes, but
 423              * exclude from coverage testing. */
 424             game.fixed[BEAR] = IS_FIXED;
 425             break;
 426         // LCOV_EXCL_STOP
 427         default:
 428             game.fixed[BEAR] = IS_FREE;
 429         }
 430         rspeak(CHAIN_UNLOCKED);
 431         return GO_CLEAROBJ;
 432     }
 433
 434     if (game.prop[CHAIN] != CHAIN_HEAP) {
 435         rspeak(ALREADY_LOCKED);
 436         return GO_CLEAROBJ;
 437     }
 438     if (game.loc != objects[CHAIN].plac) {
 439         rspeak(NO_LOCKSITE);
 440         return GO_CLEAROBJ;
 441     }
 442
 443     game.prop[CHAIN] = CHAIN_FIXED;
 444
 445     if (TOTING(CHAIN))
 446         drop(CHAIN, game.loc);
 447     game.fixed[CHAIN] = IS_FIXED;
 448
 449     rspeak(CHAIN_LOCKED);
 450     return GO_CLEAROBJ;
 451 }
 452
 453 static int discard(verb_t verb, obj_t obj)
 454 /*  Discard object.  "Throw" also comes here for most objects.  Special cases for
 455  *  bird (might attack snake or dragon) and cage (might contain bird) and vase.
 456  *  Drop coins at vending machine for extra batteries. */
 457 {
 458     if (obj == ROD && !TOTING(ROD) && TOTING(ROD2)) {
 459         obj = ROD2;
 460     }
 461
 462     if (!TOTING(obj)) {
 463         speak(actions[verb].message);
 464         return GO_CLEAROBJ;
 465     }
 466
 467     if (GSTONE(obj) && AT(CAVITY) && game.prop[CAVITY] != CAVITY_FULL) {
 468         rspeak(GEM_FITS);
 469         game.prop[obj] = STATE_IN_CAVITY;
 470         game.prop[CAVITY] = CAVITY_FULL;
 471         if (HERE(RUG) && ((obj == EMERALD && game.prop[RUG] != RUG_HOVER) ||
 472                           (obj == RUBY && game.prop[RUG] == RUG_HOVER))) {
 473             if (obj == RUBY)
 474                 rspeak(RUG_SETTLES);
 475             else if (TOTING(RUG))
 476                 rspeak(RUG_WIGGLES);
 477             else
 478                 rspeak(RUG_RISES);
 479             if (!TOTING(RUG) || obj == RUBY) {
 480                 int k = (game.prop[RUG] == RUG_HOVER) ? RUG_FLOOR : RUG_HOVER;
 481                 game.prop[RUG] = k;
 482                 if (k == RUG_HOVER)
 483                     k = objects[SAPPH].plac;
 484                 move(RUG + NOBJECTS, k);
 485             }
 486         }
 487         drop(obj, game.loc);
 488         return GO_CLEAROBJ;
 489     }
 490
 491     if (obj == COINS && HERE(VEND)) {
 492         DESTROY(COINS);
 493         drop(BATTERY, game.loc);
 494         pspeak(BATTERY, look, FRESH_BATTERIES, true);
 495         return GO_CLEAROBJ;
 496     }
 497
 498     if (LIQUID() == obj)
 499         obj = BOTTLE;
 500     if (obj == BOTTLE && LIQUID() != NO_OBJECT) {
 501         game.place[LIQUID()] = LOC_NOWHERE;
 502     }
 503
 504     if (obj == BEAR && AT(TROLL)) {
 505         state_change(TROLL, TROLL_GONE);
 506         move(TROLL, LOC_NOWHERE);
 507         move(TROLL + NOBJECTS, IS_FREE);
 508         move(TROLL2, objects[TROLL].plac);
 509         move(TROLL2 + NOBJECTS, objects[TROLL].fixd);
 510         juggle(CHASM);
 511         drop(obj, game.loc);
 512         return GO_CLEAROBJ;
 513     }
 514
 515     if (obj == VASE) {
 516         if (game.loc != objects[PILLOW].plac) {
 517             state_change(VASE, AT(PILLOW)
 518                          ? VASE_WHOLE
 519                          : VASE_DROPPED);
 520             if (game.prop[VASE] != VASE_WHOLE)
 521                 game.fixed[VASE] = IS_FIXED;
 522             drop(obj, game.loc);
 523             return GO_CLEAROBJ;
 524         }
 525     }
 526
 527     if (obj == CAGE && game.prop[BIRD] == BIRD_CAGED) {
 528         drop(BIRD, game.loc);
 529     }
 530
 531     if (obj == BIRD) {
 532         if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
 533             rspeak(BIRD_BURNT);
 534             DESTROY(BIRD);
 535             return GO_CLEAROBJ;
 536         }
 537         if (HERE(SNAKE)) {
 538             rspeak(BIRD_ATTACKS);
 539             if (game.closed)
 540                 return GO_DWARFWAKE;
 541             DESTROY(SNAKE);
 542             /* Set game.prop for use by travel options */
 543             game.prop[SNAKE] = SNAKE_CHASED;
 544         } else
 545             rspeak(OK_MAN);
 546
 547         game.prop[BIRD] = FOREST(game.loc) ? BIRD_FOREST_UNCAGED : BIRD_UNCAGED;
 548         drop(obj, game.loc);
 549         return GO_CLEAROBJ;
 550     }
 551
 552     rspeak(OK_MAN);
 553     drop(obj, game.loc);
 554     return GO_CLEAROBJ;
 555 }
 556
 557 static int drink(verb_t verb, obj_t obj)
 558 /*  Drink.  If no object, assume water and look for it here.  If water is in
 559  *  the bottle, drink that, else must be at a water loc, so drink stream. */
 560 {
 561     if (obj == INTRANSITIVE && LIQLOC(game.loc) != WATER &&
 562         (LIQUID() != WATER || !HERE(BOTTLE))) {
 563         return GO_UNKNOWN;
 564     }
 565
 566     if (obj == BLOOD) {
 567         DESTROY(BLOOD);
 568         state_change(DRAGON, DRAGON_BLOODLESS);
 569         game.blooded = true;
 570         return GO_CLEAROBJ;
 571     }
 572
 573     if (obj != INTRANSITIVE && obj != WATER) {
 574         rspeak(RIDICULOUS_ATTEMPT);
 575         return GO_CLEAROBJ;
 576     }
 577     if (LIQUID() == WATER && HERE(BOTTLE)) {
 578         game.place[WATER] = LOC_NOWHERE;
 579         state_change(BOTTLE, EMPTY_BOTTLE);
 580         return GO_CLEAROBJ;
 581     }
 582
 583     speak(actions[verb].message);
 584     return GO_CLEAROBJ;
 585 }
 586
 587 static int eat(verb_t verb, obj_t obj)
 588 /*  Eat.  Intransitive: assume food if present, else ask what.  Transitive: food
 589  *  ok, some things lose appetite, rest are ridiculous. */
 590 {
 591     switch (obj) {
 592     case INTRANSITIVE:
 593         if (!HERE(FOOD))
 594             return GO_UNKNOWN;
 595     case FOOD:
 596         DESTROY(FOOD);
 597         rspeak(THANKS_DELICIOUS);
 598         break;
 599     case BIRD:
 600     case SNAKE:
 601     case CLAM:
 602     case OYSTER:
 603     case DWARF:
 604     case DRAGON:
 605     case TROLL:
 606     case BEAR:
 607     case OGRE:
 608         rspeak(LOST_APPETITE);
 609         break;
 610     default:
 611         speak(actions[verb].message);
 612     }
 613     return GO_CLEAROBJ;
 614 }
 615
 616 static int extinguish(verb_t verb, obj_t obj)
 617 /* Extinguish.  Lamp, urn, dragon/volcano (nice try). */
 618 {
 619     if (obj == INTRANSITIVE) {
 620         if (HERE(LAMP) && game.prop[LAMP] == LAMP_BRIGHT)
 621             obj = LAMP;
 622         if (HERE(URN) && game.prop[URN] == URN_LIT)
 623             obj = URN;
 624         if (obj == INTRANSITIVE)
 625             return GO_UNKNOWN;
 626     }
 627
 628     switch (obj) {
 629     case URN:
 630         if (game.prop[URN] != URN_EMPTY) {
 631             state_change(URN, URN_DARK);
 632         } else {
 633             pspeak(URN, change, URN_DARK, true);
 634         }
 635         break;
 636     case LAMP:
 637         state_change(LAMP, LAMP_DARK);
 638         rspeak(DARK(game.loc) ?
 639                PITCH_DARK :
 640                NO_MESSAGE);
 641         break;
 642     case DRAGON:
 643     case VOLCANO:
 644         rspeak(BEYOND_POWER);
 645         break;
 646     default:
 647         speak(actions[verb].message);
 648     }
 649     return GO_CLEAROBJ;
 650 }
 651
 652 static int feed(verb_t verb, obj_t obj)
 653 /*  Feed.  If bird, no seed.  Snake, dragon, troll: quip.  If dwarf, make him
 654  *  mad.  Bear, special. */
 655 {
 656     switch (obj) {
 657     case BIRD:
 658         rspeak(BIRD_PINING);
 659         break;
 660     case DRAGON:
 661         if (game.prop[DRAGON] != DRAGON_BARS)
 662             rspeak(RIDICULOUS_ATTEMPT);
 663         else
 664             rspeak(NOTHING_EDIBLE);
 665         break;
 666     case SNAKE:
 667         if (!game.closed && HERE(BIRD)) {
 668             DESTROY(BIRD);
 669             rspeak(BIRD_DEVOURED);
 670         } else
 671             rspeak(NOTHING_EDIBLE);
 672         break;
 673     case TROLL:
 674         rspeak(TROLL_VICES);
 675         break;
 676     case DWARF:
 677         if (HERE(FOOD)) {
 678             game.dflag += 2;
 679             rspeak(REALLY_MAD);
 680         } else
 681             speak(actions[verb].message);
 682         break;
 683     case BEAR:
 684         if (game.prop[BEAR] == BEAR_DEAD) {
 685             rspeak(RIDICULOUS_ATTEMPT);
 686             break;
 687         }
 688         if (game.prop[BEAR] == UNTAMED_BEAR) {
 689             if (HERE(FOOD)) {
 690                 DESTROY(FOOD);
 691                 game.fixed[AXE] = IS_FREE;
 692                 game.prop[AXE] = AXE_HERE;
 693                 state_change(BEAR, SITTING_BEAR);
 694             } else
 695                 rspeak(NOTHING_EDIBLE);
 696             break;
 697         }
 698         speak(actions[verb].message);
 699         break;
 700     case OGRE:
 701         if (HERE(FOOD))
 702             rspeak(OGRE_FULL);
 703         else
 704             speak(actions[verb].message);
 705         break;
 706     default:
 707         rspeak(AM_GAME);
 708     }
 709     return GO_CLEAROBJ;
 710 }
 711
 712 int fill(verb_t verb, obj_t obj)
 713 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 714  *  is nasty.) */
 715 {
 716     if (obj == VASE) {
 717         if (LIQLOC(game.loc) == NO_OBJECT) {
 718             rspeak(FILL_INVALID);
 719             return GO_CLEAROBJ;
 720         }
 721         if (!TOTING(VASE)) {
 722             rspeak(ARENT_CARRYING);
 723             return GO_CLEAROBJ;
 724         }
 725         rspeak(SHATTER_VASE);
 726         game.prop[VASE] = VASE_BROKEN;
 727         game.fixed[VASE] = IS_FIXED;
 728         drop(VASE, game.loc);
 729         return GO_CLEAROBJ;
 730     }
 731
 732     if (obj == URN) {
 733         if (game.prop[URN] != URN_EMPTY) {
 734             rspeak(FULL_URN);
 735             return GO_CLEAROBJ;
 736         }
 737         if (!HERE(BOTTLE)) {
 738             rspeak(FILL_INVALID);
 739             return GO_CLEAROBJ;
 740         }
 741         int k = LIQUID();
 742         switch (k) {
 743         case WATER:
 744             game.prop[BOTTLE] = EMPTY_BOTTLE;
 745             rspeak(WATER_URN);
 746             break;
 747         case OIL:
 748             game.prop[URN] = URN_DARK;
 749             game.prop[BOTTLE] = EMPTY_BOTTLE;
 750             rspeak(OIL_URN);
 751             break;
 752         case NO_OBJECT:
 753         default:
 754             rspeak(FILL_INVALID);
 755             return GO_CLEAROBJ;
 756         }
 757         game.place[k] = LOC_NOWHERE;
 758         return GO_CLEAROBJ;
 759     }
 760     if (obj != INTRANSITIVE && obj != BOTTLE) {
 761         speak(actions[verb].message);
 762         return GO_CLEAROBJ;
 763     }
 764     if (obj == INTRANSITIVE && !HERE(BOTTLE))
 765         return GO_UNKNOWN;
 766
 767     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 768         rspeak(URN_NOPOUR);
 769         return GO_CLEAROBJ;
 770     }
 771     if (LIQUID() != NO_OBJECT) {
 772         rspeak(BOTTLE_FULL);
 773         return GO_CLEAROBJ;
 774     }
 775     if (LIQLOC(game.loc) == NO_OBJECT) {
 776         rspeak(NO_LIQUID);
 777         return GO_CLEAROBJ;
 778     }
 779
 780     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 781                  ? OIL_BOTTLE
 782                  : WATER_BOTTLE);
 783     if (TOTING(BOTTLE))
 784         game.place[LIQUID()] = CARRIED;
 785     return GO_CLEAROBJ;
 786 }
 787
 788 static int find(verb_t verb, obj_t obj)
 789 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 790 {
 791     if (TOTING(obj)) {
 792         rspeak(ALREADY_CARRYING);
 793         return GO_CLEAROBJ;
 794     }
 795
 796     if (game.closed) {
 797         rspeak(NEEDED_NEARBY);
 798         return GO_CLEAROBJ;
 799     }
 800
 801     if (AT(obj) ||
 802         (LIQUID() == obj && AT(BOTTLE)) ||
 803         obj == LIQLOC(game.loc) ||
 804         (obj == DWARF && atdwrf(game.loc) > 0)) {
 805         rspeak(YOU_HAVEIT);
 806         return GO_CLEAROBJ;
 807     }
 808
 809
 810     speak(actions[verb].message);
 811     return GO_CLEAROBJ;
 812 }
 813
 814 static int fly(verb_t verb, obj_t obj)
 815 /* Fly.  Snide remarks unless hovering rug is here. */
 816 {
 817     if (obj == INTRANSITIVE) {
 818         if (!HERE(RUG)) {
 819             rspeak(FLAP_ARMS);
 820             return GO_CLEAROBJ;
 821         }
 822         if (game.prop[RUG] != RUG_HOVER) {
 823             rspeak(RUG_NOTHING2);
 824             return GO_CLEAROBJ;
 825         }
 826         obj = RUG;
 827     }
 828
 829     if (obj != RUG) {
 830         speak(actions[verb].message);
 831         return GO_CLEAROBJ;
 832     }
 833     if (game.prop[RUG] != RUG_HOVER) {
 834         rspeak(RUG_NOTHING1);
 835         return GO_CLEAROBJ;
 836     }
 837     game.oldlc2 = game.oldloc;
 838     game.oldloc = game.loc;
 839
 840     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 841         game.newloc = game.place[SAPPH];
 842         rspeak(RUG_GOES);
 843     } else {
 844         game.newloc = LOC_CLIFF;
 845         rspeak(RUG_RETURNS);
 846     }
 847     return GO_TERMINATE;
 848 }
 849
 850 static int inven(void)
 851 /* Inventory. If object, treat same as find.  Else report on current burden. */
 852 {
 853     bool empty = true;
 854     for (obj_t i = 1; i <= NOBJECTS; i++) {
 855         if (i == BEAR ||
 856             !TOTING(i))
 857             continue;
 858         if (empty) {
 859             rspeak(NOW_HOLDING);
 860             empty = false;
 861         }
 862         pspeak(i, touch, -1, false);
 863     }
 864     if (TOTING(BEAR))
 865         rspeak(TAME_BEAR);
 866     if (empty)
 867         rspeak(NO_CARRY);
 868     return GO_CLEAROBJ;
 869 }
 870
 871 static int light(verb_t verb, obj_t obj)
 872 /*  Light.  Applicable only to lamp and urn. */
 873 {
 874     if (obj == INTRANSITIVE) {
 875         int selects = 0;
 876         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0) {
 877             obj = LAMP;
 878             selects++;
 879         }
 880         if (HERE(URN) && game.prop[URN] == URN_DARK) {
 881             obj =  URN;
 882             selects++;
 883         }
 884         if (selects != 1)
 885             return GO_UNKNOWN;
 886     }
 887
 888     switch (obj) {
 889     case URN:
 890         state_change(URN, game.prop[URN] == URN_EMPTY ?
 891                      URN_EMPTY :
 892                      URN_LIT);
 893         break;
 894     case LAMP:
 895         if (game.limit < 0) {
 896             rspeak(LAMP_OUT);
 897             break;
 898         }
 899         state_change(LAMP, LAMP_BRIGHT);
 900         if (game.wzdark)
 901             return GO_TOP;
 902         break;
 903     default:
 904         speak(actions[verb].message);
 905     }
 906     return GO_CLEAROBJ;
 907 }
 908
 909 static int listen(void)
 910 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 911 {
 912     long sound = locations[game.loc].sound;
 913     if (sound != SILENT) {
 914         rspeak(sound);
 915         if (!locations[game.loc].loud)
 916             rspeak(NO_MESSAGE);
 917         return GO_CLEAROBJ;
 918     }
 919     for (obj_t i = 1; i <= NOBJECTS; i++) {
 920         if (!HERE(i) ||
 921             objects[i].sounds[0] == NULL ||
 922             game.prop[i] < 0)
 923             continue;
 924         int mi =  game.prop[i];
 925         /* (ESR) Some unpleasant magic on object states here. Ideally
 926          * we'd have liked the bird to be a normal object that we can
 927          * use state_change() on; can't do it, because there are
 928          * actually two different series of per-state birdsounds
 929          * depending on whether player has drunk dragon's blood. */
 930         if (i == BIRD)
 931             mi += 3 * game.blooded;
 932         long packed_zzword = token_to_packed(game.zzword);
 933         pspeak(i, hear, mi, true, packed_zzword);
 934         rspeak(NO_MESSAGE);
 935         if (i == BIRD && mi == BIRD_ENDSTATE)
 936             DESTROY(BIRD);
 937         return GO_CLEAROBJ;
 938     }
 939     rspeak(ALL_SILENT);
 940     return GO_CLEAROBJ;
 941 }
 942
 943 static int lock(verb_t verb, obj_t obj)
 944 /* Lock, unlock, no object given.  Assume various things if present. */
 945 {
 946     if (obj == INTRANSITIVE) {
 947         if (HERE(CLAM))
 948             obj = CLAM;
 949         if (HERE(OYSTER))
 950             obj = OYSTER;
 951         if (AT(DOOR))
 952             obj = DOOR;
 953         if (AT(GRATE))
 954             obj = GRATE;
 955         if (HERE(CHAIN))
 956             obj = CHAIN;
 957         if (obj == INTRANSITIVE) {
 958             rspeak(NOTHING_LOCKED);
 959             return GO_CLEAROBJ;
 960         }
 961     }
 962
 963     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 964      *  and for chain. */
 965
 966     switch (obj) {
 967     case CHAIN:
 968         if (HERE(KEYS)) {
 969             return chain(verb);
 970         } else
 971             rspeak(NO_KEYS);
 972         break;
 973     case GRATE:
 974         if (HERE(KEYS)) {
 975             if (game.closng) {
 976                 rspeak(EXIT_CLOSED);
 977                 if (!game.panic)
 978                     game.clock2 = PANICTIME;
 979                 game.panic = true;
 980             } else {
 981                 state_change(GRATE, (verb == LOCK) ?
 982                              GRATE_CLOSED :
 983                              GRATE_OPEN);
 984             }
 985         } else
 986             rspeak(NO_KEYS);
 987         break;
 988     case CLAM:
 989         if (verb == LOCK)
 990             rspeak(HUH_MAN);
 991         else if (!TOTING(TRIDENT))
 992             rspeak(CLAM_OPENER);
 993         else {
 994             DESTROY(CLAM);
 995             drop(OYSTER, game.loc);
 996             drop(PEARL, LOC_CULDESAC);
 997             rspeak(PEARL_FALLS);
 998         }
 999         break;
1000     case OYSTER:
1001         if (verb == LOCK)
1002             rspeak(HUH_MAN);
1003         else if (TOTING(OYSTER))
1004             rspeak(DROP_OYSTER);
1005         else if (!TOTING(TRIDENT))
1006             rspeak(OYSTER_OPENER);
1007         else
1008             rspeak(OYSTER_OPENS);
1009         break;
1010     case DOOR:
1011         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
1012         break;
1013     case CAGE:
1014         rspeak( NO_LOCK);
1015         break;
1016     case KEYS:
1017         rspeak(CANNOT_UNLOCK);
1018         break;
1019     default:
1020         speak(actions[verb].message);
1021     }
1022
1023     return GO_CLEAROBJ;
1024 }
1025
1026 static int pour(verb_t verb, obj_t obj)
1027 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
1028  *  special tests for pouring water or oil on plant or rusty door. */
1029 {
1030     if (obj == BOTTLE ||
1031         obj == INTRANSITIVE)
1032         obj = LIQUID();
1033     if (obj == NO_OBJECT)
1034         return GO_UNKNOWN;
1035     if (!TOTING(obj)) {
1036         speak(actions[verb].message);
1037         return GO_CLEAROBJ;
1038     }
1039
1040     if (obj != OIL && obj != WATER) {
1041         rspeak(CANT_POUR);
1042         return GO_CLEAROBJ;
1043     }
1044     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1045         return fill(verb, URN);
1046     game.prop[BOTTLE] = EMPTY_BOTTLE;
1047     game.place[obj] = LOC_NOWHERE;
1048     if (!(AT(PLANT) ||
1049           AT(DOOR))) {
1050         rspeak(GROUND_WET);
1051         return GO_CLEAROBJ;
1052     }
1053     if (!AT(DOOR)) {
1054         if (obj == WATER) {
1055             /* cycle through the three plant states */
1056             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1057             game.prop[PLANT2] = game.prop[PLANT];
1058             return GO_MOVE;
1059         } else {
1060             rspeak(SHAKING_LEAVES);
1061             return GO_CLEAROBJ;
1062         }
1063     } else {
1064         state_change(DOOR, (obj == OIL) ?
1065                      DOOR_UNRUSTED :
1066                      DOOR_RUSTED);
1067         return GO_CLEAROBJ;
1068     }
1069 }
1070
1071 static int quit(void)
1072 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1073 {
1074     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1075         terminate(quitgame);
1076     return GO_CLEAROBJ;
1077 }
1078
1079 static int read(struct command_t command)
1080 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1081 {
1082     if (command.obj == INTRANSITIVE) {
1083         command.obj = NO_OBJECT;
1084         for (int i = 1; i <= NOBJECTS; i++) {
1085             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1086                 command.obj = command.obj * NOBJECTS + i;
1087         }
1088         if (command.obj > NOBJECTS ||
1089             command.obj == NO_OBJECT ||
1090             DARK(game.loc))
1091             return GO_UNKNOWN;
1092     }
1093
1094     if (DARK(game.loc)) {
1095         sspeak(NO_SEE, command.raw1);
1096     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1097         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1098     } else if (objects[command.obj].texts[0] == NULL ||
1099                game.prop[command.obj] == STATE_NOTFOUND) {
1100         speak(actions[command.verb].message);
1101     } else
1102         pspeak(command.obj, study, game.prop[command.obj], true);
1103     return GO_CLEAROBJ;
1104 }
1105
1106 static int reservoir(void)
1107 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1108 {
1109     if (!AT(RESER) && game.loc != LOC_RESBOTTOM) {
1110         rspeak(NOTHING_HAPPENS);
1111         return GO_CLEAROBJ;
1112     } else {
1113         state_change(RESER,
1114                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1115         if (AT(RESER))
1116             return GO_CLEAROBJ;
1117         else {
1118             game.oldlc2 = game.loc;
1119             game.newloc = LOC_NOWHERE;
1120             rspeak(NOT_BRIGHT);
1121             return GO_TERMINATE;
1122         }
1123     }
1124 }
1125
1126 static int rub(verb_t verb, obj_t obj)
1127 /* Rub.  Yields various snide remarks except for lit urn. */
1128 {
1129     if (obj == URN && game.prop[URN] == URN_LIT) {
1130         DESTROY(URN);
1131         drop(AMBER, game.loc);
1132         game.prop[AMBER] = AMBER_IN_ROCK;
1133         --game.tally;
1134         drop(CAVITY, game.loc);
1135         rspeak(URN_GENIES);
1136     } else if (obj != LAMP) {
1137         rspeak(PECULIAR_NOTHING);
1138     } else {
1139         speak(actions[verb].message);
1140     }
1141     return GO_CLEAROBJ;
1142 }
1143
1144 static int say(struct command_t *command)
1145 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1146 {
1147     if (command->wd2 > 0) {
1148         command->wd1 = command->wd2;
1149         strncpy(command->raw1, command->raw2, LINESIZE - 1);
1150     }
1151     char word1[TOKLEN + 1];
1152     packed_to_token(command->wd1, word1);
1153     long wd;
1154     enum wordtype type;
1155     get_vocab_metadata(word1, &wd, &type);
1156     if (wd == XYZZY ||
1157         wd == PLUGH ||
1158         wd == PLOVER ||
1159         wd == FEE ||
1160         wd == FIE ||
1161         wd == FOE ||
1162         wd == FOO ||
1163         wd == FUM ||
1164         wd == PART) {
1165         /* FIXME: scribbles on the interpreter's command block */
1166         wordclear(&command->wd2);
1167         return GO_LOOKUP;
1168     }
1169     sspeak(OKEY_DOKEY, command->raw1);
1170     return GO_CLEAROBJ;
1171 }
1172
1173 static int throw_support(long spk)
1174 {
1175     rspeak(spk);
1176     drop(AXE, game.loc);
1177     return GO_MOVE;
1178 }
1179
1180 static int throw (struct command_t *command)
1181 /*  Throw.  Same as discard unless axe.  Then same as attack except
1182  *  ignore bird, and if dwarf is present then one might be killed.
1183  *  (Only way to do so!)  Axe also special for dragon, bear, and
1184  *  troll.  Treasures special for troll. */
1185 {
1186     if (!TOTING(command->obj)) {
1187         speak(actions[command->verb].message);
1188         return GO_CLEAROBJ;
1189     }
1190     if (objects[command->obj].is_treasure && AT(TROLL)) {
1191         /*  Snarf a treasure for the troll. */
1192         drop(command->obj, LOC_NOWHERE);
1193         move(TROLL, LOC_NOWHERE);
1194         move(TROLL + NOBJECTS, IS_FREE);
1195         drop(TROLL2, objects[TROLL].plac);
1196         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1197         juggle(CHASM);
1198         rspeak(TROLL_SATISFIED);
1199         return GO_CLEAROBJ;
1200     }
1201     if (command->obj == FOOD && HERE(BEAR)) {
1202         /* But throwing food is another story. */
1203         command->obj = BEAR;
1204         return (feed(command->verb, command->obj));
1205     }
1206     if (command->obj != AXE)
1207         return (discard(command->verb, command->obj));
1208     else {
1209         if (atdwrf(game.loc) <= 0) {
1210             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1211                 return throw_support(DRAGON_SCALES);
1212             if (AT(TROLL))
1213                 return throw_support(TROLL_RETURNS);
1214             if (AT(OGRE))
1215                 return throw_support(OGRE_DODGE);
1216             if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1217                 /* This'll teach him to throw the axe at the bear! */
1218                 drop(AXE, game.loc);
1219                 game.fixed[AXE] = IS_FIXED;
1220                 juggle(BEAR);
1221                 state_change(AXE, AXE_LOST);
1222                 return GO_CLEAROBJ;
1223             }
1224             command->obj = INTRANSITIVE;
1225             return (attack(command));
1226         }
1227
1228         if (randrange(NDWARVES + 1) < game.dflag) {
1229             return throw_support(DWARF_DODGES);
1230         } else {
1231             long i = atdwrf(game.loc);
1232             game.dseen[i] = false;
1233             game.dloc[i] = LOC_NOWHERE;
1234             return throw_support((++game.dkill == 1) ?
1235                                  DWARF_SMOKE :
1236                                  KILLED_DWARF);
1237         }
1238     }
1239 }
1240
1241 static int wake(verb_t verb, obj_t obj)
1242 /* Wake.  Only use is to disturb the dwarves. */
1243 {
1244     if (obj != DWARF ||
1245         !game.closed) {
1246         speak(actions[verb].message);
1247         return GO_CLEAROBJ;
1248     } else {
1249         rspeak(PROD_DWARF);
1250         return GO_DWARFWAKE;
1251     }
1252 }
1253
1254 static int wave(verb_t verb, obj_t obj)
1255 /* Wave.  No effect unless waving rod at fissure or at bird. */
1256 {
1257     if (obj != ROD ||
1258         !TOTING(obj) ||
1259         (!HERE(BIRD) &&
1260          (game.closng ||
1261           !AT(FISSURE)))) {
1262         speak(((!TOTING(obj)) && (obj != ROD ||
1263                                   !TOTING(ROD2))) ?
1264               arbitrary_messages[ARENT_CARRYING] :
1265               actions[verb].message);
1266         return GO_CLEAROBJ;
1267     }
1268
1269     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] == STATE_NOTFOUND) {
1270         drop(JADE, game.loc);
1271         game.prop[JADE] = STATE_FOUND;
1272         --game.tally;
1273         rspeak(NECKLACE_FLY);
1274         return GO_CLEAROBJ;
1275     } else {
1276         if (game.closed) {
1277             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1278                    CAGE_FLY :
1279                    FREE_FLY);
1280             return GO_DWARFWAKE;
1281         }
1282         if (game.closng ||
1283             !AT(FISSURE)) {
1284             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1285                    CAGE_FLY :
1286                    FREE_FLY);
1287             return GO_CLEAROBJ;
1288         }
1289         if (HERE(BIRD))
1290             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1291                    CAGE_FLY :
1292                    FREE_FLY);
1293
1294         state_change(FISSURE,
1295                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1296         return GO_CLEAROBJ;
1297     }
1298 }
1299
1300 int action(struct command_t *command)
1301 /*  Analyse a verb.  Remember what it was, go back for object if second word
1302  *  unless verb is "say", which snarfs arbitrary second word.
1303  */
1304 {
1305     if (command->part == unknown) {
1306         /*  Analyse an object word.  See if the thing is here, whether
1307          *  we've got a verb yet, and so on.  Object must be here
1308          *  unless verb is "find" or "invent(ory)" (and no new verb
1309          *  yet to be analysed).  Water and oil are also funny, since
1310          *  they are never actually dropped at any location, but might
1311          *  be here inside the bottle or urn or as a feature of the
1312          *  location. */
1313         if (HERE(command->obj))
1314             /* FALL THROUGH */;
1315         else if (command->obj == GRATE) {
1316             if (game.loc == LOC_START ||
1317                 game.loc == LOC_VALLEY ||
1318                 game.loc == LOC_SLIT) {
1319                 command->obj = DPRSSN;
1320             }
1321             if (game.loc == LOC_COBBLE ||
1322                 game.loc == LOC_DEBRIS ||
1323                 game.loc == LOC_AWKWARD ||
1324                 game.loc == LOC_BIRD ||
1325                 game.loc == LOC_PITTOP) {
1326                 command->obj = ENTRNC;
1327             }
1328         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1329             /* FALL THROUGH */;
1330         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1331                  command->obj == LIQLOC(game.loc))
1332             /* FALL THROUGH */;
1333         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != URN_EMPTY) {
1334             command->obj = URN;
1335             /* FALL THROUGH */;
1336         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != PLANT_THIRSTY) {
1337             command->obj = PLANT2;
1338             /* FALL THROUGH */;
1339         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1340             game.knfloc = -1;
1341             rspeak(KNIVES_VANISH);
1342             return GO_CLEAROBJ;
1343         } else if (command->obj == ROD && HERE(ROD2)) {
1344             command->obj = ROD2;
1345             /* FALL THROUGH */;
1346         } else if ((command->verb == FIND ||
1347                     command->verb == INVENTORY) && (command->id2 == WORD_EMPTY || command->id2 == WORD_NOT_FOUND))
1348             /* FALL THROUGH */;
1349         else {
1350             sspeak(NO_SEE, command->raw1);
1351             return GO_CLEAROBJ;
1352         }
1353
1354         if (command->id2 != WORD_EMPTY && command->id2 != WORD_NOT_FOUND)
1355             return GO_WORD2;
1356         if (command->verb != 0)
1357             command->part = transitive;
1358     }
1359
1360     switch (command->part) {
1361     case intransitive:
1362         if (command->wd2 > 0 && command->verb != SAY)
1363             return GO_WORD2;
1364         if (command->verb == SAY)
1365             command->obj = command->wd2;
1366         if (command->obj == NO_OBJECT ||
1367             command->obj == INTRANSITIVE) {
1368             /*  Analyse an intransitive verb (ie, no object given yet). */
1369             switch (command->verb) {
1370             case CARRY:
1371                 return vcarry(command->verb, INTRANSITIVE);
1372             case  DROP:
1373                 return GO_UNKNOWN;
1374             case  SAY:
1375                 return GO_UNKNOWN;
1376             case  UNLOCK:
1377                 return lock(command->verb, INTRANSITIVE);
1378             case  NOTHING: {
1379                 rspeak(OK_MAN);
1380                 return (GO_CLEAROBJ);
1381             }
1382             case  LOCK:
1383                 return lock(command->verb, INTRANSITIVE);
1384             case  LIGHT:
1385                 return light(command->verb, INTRANSITIVE);
1386             case  EXTINGUISH:
1387                 return extinguish(command->verb, INTRANSITIVE);
1388             case  WAVE:
1389                 return GO_UNKNOWN;
1390             case  TAME:
1391                 return GO_UNKNOWN;
1392             case GO: {
1393                 speak(actions[command->verb].message);
1394                 return GO_CLEAROBJ;
1395             }
1396             case ATTACK:
1397                 command->obj = INTRANSITIVE;
1398                 return attack(command);
1399             case POUR:
1400                 return pour(command->verb, INTRANSITIVE);
1401             case EAT:
1402                 return eat(command->verb, INTRANSITIVE);
1403             case DRINK:
1404                 return drink(command->verb, INTRANSITIVE);
1405             case RUB:
1406                 return GO_UNKNOWN;
1407             case THROW:
1408                 return GO_UNKNOWN;
1409             case QUIT:
1410                 return quit();
1411             case FIND:
1412                 return GO_UNKNOWN;
1413             case INVENTORY:
1414                 return inven();
1415             case FEED:
1416                 return GO_UNKNOWN;
1417             case FILL:
1418                 return fill(command->verb, INTRANSITIVE);
1419             case BLAST:
1420                 blast();
1421                 return GO_CLEAROBJ;
1422             case SCORE:
1423                 score(scoregame);
1424                 return GO_CLEAROBJ;
1425             case FEE:
1426             case FIE:
1427             case FOE:
1428             case FOO:
1429             case FUM:
1430                 return bigwords(command->id1);
1431             case BRIEF:
1432                 return brief();
1433             case READ:
1434                 command->obj = INTRANSITIVE;
1435                 return read(*command);
1436             case BREAK:
1437                 return GO_UNKNOWN;
1438             case WAKE:
1439                 return GO_UNKNOWN;
1440             case SAVE:
1441                 return suspend();
1442             case RESUME:
1443                 return resume();
1444             case FLY:
1445                 return fly(command->verb, INTRANSITIVE);
1446             case LISTEN:
1447                 return listen();
1448             case PART:
1449                 return reservoir();
1450             default: // LCOV_EXCL_LINE
1451                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1452             }
1453         }
1454     /* FALLTHRU */
1455     case transitive:
1456         /*  Analyse a transitive verb. */
1457         switch (command->verb) {
1458         case  CARRY:
1459             return vcarry(command->verb, command->obj);
1460         case  DROP:
1461             return discard(command->verb, command->obj);
1462         case  SAY:
1463             return say(command);
1464         case  UNLOCK:
1465             return lock(command->verb, command->obj);
1466         case  NOTHING: {
1467             rspeak(OK_MAN);
1468             return (GO_CLEAROBJ);
1469         }
1470         case  LOCK:
1471             return lock(command->verb, command->obj);
1472         case LIGHT:
1473             return light(command->verb, command->obj);
1474         case EXTINGUISH:
1475             return extinguish(command->verb, command->obj);
1476         case WAVE:
1477             return wave(command->verb, command->obj);
1478         case TAME: {
1479             speak(actions[command->verb].message);
1480             return GO_CLEAROBJ;
1481         }
1482         case GO: {
1483             speak(actions[command->verb].message);
1484             return GO_CLEAROBJ;
1485         }
1486         case ATTACK:
1487             return attack(command);
1488         case POUR:
1489             return pour(command->verb, command->obj);
1490         case EAT:
1491             return eat(command->verb, command->obj);
1492         case DRINK:
1493             return drink(command->verb, command->obj);
1494         case RUB:
1495             return rub(command->verb, command->obj);
1496         case THROW:
1497             return throw (command);
1498         case QUIT: {
1499             speak(actions[command->verb].message);
1500             return GO_CLEAROBJ;
1501         }
1502         case FIND:
1503             return find(command->verb, command->obj);
1504         case INVENTORY:
1505             return find(command->verb, command->obj);
1506         case FEED:
1507             return feed(command->verb, command->obj);
1508         case FILL:
1509             return fill(command->verb, command->obj);
1510         case BLAST:
1511             blast();
1512             return GO_CLEAROBJ;
1513         case SCORE: {
1514             speak(actions[command->verb].message);
1515             return GO_CLEAROBJ;
1516         }
1517         case FEE:
1518         case FIE:
1519         case FOE:
1520         case FOO:
1521         case FUM: {
1522             speak(actions[command->verb].message);
1523             return GO_CLEAROBJ;
1524         }
1525         case BRIEF: {
1526             speak(actions[command->verb].message);
1527             return GO_CLEAROBJ;
1528         }
1529         case READ:
1530             return read(*command);
1531         case BREAK:
1532             return vbreak(command->verb, command->obj);
1533         case WAKE:
1534             return wake(command->verb, command->obj);
1535         case SAVE: {
1536             speak(actions[command->verb].message);
1537             return GO_CLEAROBJ;
1538         }
1539         case RESUME: {
1540             speak(actions[command->verb].message);
1541             return GO_CLEAROBJ;
1542         }
1543         case FLY:
1544             return fly(command->verb, command->obj);
1545         case LISTEN: {
1546             speak(actions[command->verb].message);
1547             return GO_CLEAROBJ;
1548         }
1549         case PART:
1550             return reservoir();
1551         default: // LCOV_EXCL_LINE
1552             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1553         }
1554     case unknown:
1555         /* Unknown verb, couldn't deduce object - might need hint */
1556         sspeak(WHAT_DO, command->raw1);
1557         return GO_CHECKHINT;
1558     default: // LCOV_EXCL_LINE
1559         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1560     }
1561 }