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           {
 106             speak(arbitrary_messages[NASTY_DRAGON]);
 107             return GO_MOVE;
 108           }
 109         state_change(DRAGON, DRAGON_DEAD);
 110         game.prop[RUG] = RUG_FLOOR;
 111         /* Hardcoding LOC_SECRET5 as the dragon's death location is ugly.
 112          * The way it was computed before was worse; it depended on the
 113          * two dragon locations being LOC_SECRET4 and LOC_SECRET6 and
 114          * LOC_SECRET5 being right between them.
 115          */
 116         move(DRAGON + NOBJECTS, IS_FIXED);
 117         move(RUG + NOBJECTS, IS_FREE);
 118         move(DRAGON, LOC_SECRET5);
 119         move(RUG, LOC_SECRET5);
 120         drop(BLOOD, LOC_SECRET5);
 121         for (obj_t i = 1; i <= NOBJECTS; i++) {
 122             if (game.place[i] == objects[DRAGON].plac ||
 123                 game.place[i] == objects[DRAGON].fixd)
 124                 move(i, LOC_SECRET5);
 125         }
 126         game.loc = LOC_SECRET5;
 127         return GO_MOVE;
 128     }
 129
 130     if (obj == OGRE) {
 131         rspeak(OGRE_DODGE);
 132         if (atdwrf(game.loc) == 0)
 133             return GO_CLEAROBJ;
 134
 135         rspeak(KNIFE_THROWN);
 136         DESTROY(OGRE);
 137         int dwarves = 0;
 138         for (int i = 1; i < PIRATE; i++) {
 139             if (game.dloc[i] == game.loc) {
 140                 ++dwarves;
 141                 game.dloc[i] = LOC_LONGWEST;
 142                 game.dseen[i] = false;
 143             }
 144         }
 145         rspeak((dwarves > 1) ?
 146                OGRE_PANIC1 :
 147                OGRE_PANIC2);
 148         return GO_CLEAROBJ;
 149     }
 150
 151     switch (obj) {
 152     case INTRANSITIVE:
 153         rspeak(NO_TARGET);
 154         break;
 155     case CLAM:
 156     case OYSTER:
 157         rspeak(SHELL_IMPERVIOUS);
 158         break;
 159     case SNAKE:
 160         rspeak(SNAKE_WARNING);
 161         break;
 162     case DWARF:
 163         if (game.closed) {
 164             return GO_DWARFWAKE;
 165         }
 166         rspeak(BARE_HANDS_QUERY);
 167         break;
 168     case DRAGON:
 169         rspeak(ALREADY_DEAD);
 170         break;
 171     case TROLL:
 172         rspeak(ROCKY_TROLL);
 173         break;
 174     default:
 175         speak(actions[verb].message);
 176     }
 177     return GO_CLEAROBJ;
 178 }
 179
 180 static int bigwords(long id)
 181 /*  FEE FIE FOE FOO (AND FUM).  Advance to next state if given in proper order.
 182  *  Look up foo in special section of vocab to determine which word we've got.
 183  *  Last word zips the eggs back to the giant room (unless already there). */
 184 {
 185     if ((game.foobar == WORD_EMPTY && id == FEE) ||
 186         (game.foobar == FEE && id == FIE) ||
 187         (game.foobar == FIE && id == FOE) ||
 188         (game.foobar == FOE && id == FOO) ||
 189         (game.foobar == FOE && id == FUM)) {
 190         game.foobar = id;
 191         if ((id != FOO) && (id != FUM)) {
 192             rspeak(OK_MAN);
 193             return GO_CLEAROBJ;
 194         }
 195         game.foobar = WORD_EMPTY;
 196         if (game.place[EGGS] == objects[EGGS].plac ||
 197             (TOTING(EGGS) && game.loc == objects[EGGS].plac)) {
 198             rspeak(NOTHING_HAPPENS);
 199             return GO_CLEAROBJ;
 200         } else {
 201             /*  Bring back troll if we steal the eggs back from him before
 202              *  crossing. */
 203             if (game.place[EGGS] == LOC_NOWHERE && game.place[TROLL] == LOC_NOWHERE && game.prop[TROLL] == TROLL_UNPAID)
 204                 game.prop[TROLL] = TROLL_PAIDONCE;
 205             int k;
 206             if (HERE(EGGS))
 207                 k = EGGS_VANISHED;
 208             else if (game.loc == objects[EGGS].plac)
 209                 k = EGGS_HERE;
 210             else
 211                 k = EGGS_DONE;
 212             move(EGGS, objects[EGGS].plac);
 213             pspeak(EGGS, look, k, true);
 214             return GO_CLEAROBJ;
 215         }
 216     } else {
 217         if (game.loc == LOC_GIANTROOM) {
 218             rspeak(START_OVER);
 219         } else {
 220             /* This is new begavior in Open Adventure - sounds better when
 221              * player isn't in the Giant Room. */
 222             rspeak(WELL_POINTLESS);
 223         }
 224         game.foobar = WORD_EMPTY;
 225         return GO_CLEAROBJ;
 226     }
 227 }
 228
 229 static void blast(void)
 230 /*  Blast.  No effect unless you've got dynamite, which is a neat trick! */
 231 {
 232     if (game.prop[ROD2] == STATE_NOTFOUND ||
 233         !game.closed)
 234         rspeak(REQUIRES_DYNAMITE);
 235     else {
 236         if (HERE(ROD2)) {
 237             game.bonus = splatter;
 238             rspeak(SPLATTER_MESSAGE);
 239         } else if (game.loc == LOC_NE) {
 240             game.bonus = defeat;
 241             rspeak(DEFEAT_MESSAGE);
 242         } else {
 243             game.bonus = victory;
 244             rspeak(VICTORY_MESSAGE);
 245         }
 246         terminate(endgame);
 247     }
 248 }
 249
 250 static int vbreak(verb_t verb, obj_t obj)
 251 /*  Break.  Only works for mirror in repository and, of course, the vase. */
 252 {
 253     switch (obj) {
 254     case MIRROR:
 255         if (game.closed) {
 256             rspeak(BREAK_MIRROR);
 257             return GO_DWARFWAKE;
 258         } else {
 259             rspeak(TOO_FAR);
 260             break;
 261         }
 262     case VASE:
 263         if (game.prop[VASE] == VASE_WHOLE) {
 264             if (TOTING(VASE))
 265                 drop(VASE, game.loc);
 266             state_change(VASE, VASE_BROKEN);
 267             game.fixed[VASE] = IS_FIXED;
 268             break;
 269         }
 270     default:
 271         speak(actions[verb].message);
 272     }
 273     return (GO_CLEAROBJ);
 274 }
 275
 276 static int brief(void)
 277 /*  Brief.  Intransitive only.  Suppress long descriptions after first time. */
 278 {
 279     game.abbnum = 10000;
 280     game.detail = 3;
 281     rspeak(BRIEF_CONFIRM);
 282     return GO_CLEAROBJ;
 283 }
 284
 285 static int vcarry(verb_t verb, obj_t obj)
 286 /*  Carry an object.  Special cases for bird and cage (if bird in cage, can't
 287  *  take one without the other).  Liquids also special, since they depend on
 288  *  status of bottle.  Also various side effects, etc. */
 289 {
 290     if (obj == INTRANSITIVE) {
 291         /*  Carry, no object given yet.  OK if only one object present. */
 292         if (game.atloc[game.loc] == NO_OBJECT ||
 293             game.link[game.atloc[game.loc]] != 0 ||
 294             atdwrf(game.loc) > 0)
 295             return GO_UNKNOWN;
 296         obj = game.atloc[game.loc];
 297     }
 298
 299     if (TOTING(obj)) {
 300         speak(actions[verb].message);
 301         return GO_CLEAROBJ;
 302     }
 303
 304     if (obj == MESSAG) {
 305         rspeak(REMOVE_MESSAGE);
 306         DESTROY(MESSAG);
 307         return GO_CLEAROBJ;
 308     }
 309
 310     if (game.fixed[obj] != IS_FREE) {
 311         switch (obj) {
 312         case PLANT:
 313             /* Next guard tests whether plant is tiny or stashed */
 314             rspeak(game.prop[PLANT] <= PLANT_THIRSTY ? DEEP_ROOTS : YOU_JOKING);
 315             break;
 316         case BEAR:
 317             rspeak( game.prop[BEAR] == SITTING_BEAR ? BEAR_CHAINED : YOU_JOKING);
 318             break;
 319         case CHAIN:
 320             rspeak( game.prop[BEAR] != UNTAMED_BEAR ? STILL_LOCKED : YOU_JOKING);
 321             break;
 322         case RUG:
 323             rspeak(game.prop[RUG] == RUG_HOVER ? RUG_HOVERS : YOU_JOKING);
 324             break;
 325         case URN:
 326             rspeak(URN_NOBUDGE);
 327             break;
 328         case CAVITY:
 329             rspeak(DOUGHNUT_HOLES);
 330             break;
 331         case BLOOD:
 332             rspeak(FEW_DROPS);
 333             break;
 334         case SIGN:
 335             rspeak(HAND_PASSTHROUGH);
 336             break;
 337         default:
 338             rspeak(YOU_JOKING);
 339         }
 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                 rspeak(NO_CONTAINER);
 349                 return GO_CLEAROBJ;
 350             }
 351             if (game.prop[BOTTLE] == EMPTY_BOTTLE) {
 352                 return (fill(verb, BOTTLE));
 353             } else
 354                 rspeak(BOTTLE_FULL);
 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     }
 388
 389     carry(obj, game.loc);
 390
 391     if (obj == BOTTLE && LIQUID() != NO_OBJECT)
 392         game.place[LIQUID()] = CARRIED;
 393
 394     if (GSTONE(obj) && game.prop[obj] != STATE_FOUND) {
 395         game.prop[obj] = STATE_FOUND;
 396         game.prop[CAVITY] = CAVITY_EMPTY;
 397     }
 398     rspeak(OK_MAN);
 399     return GO_CLEAROBJ;
 400 }
 401
 402 static int chain(verb_t verb)
 403 /* Do something to the bear's chain */
 404 {
 405     if (verb != LOCK) {
 406         if (game.prop[BEAR] == UNTAMED_BEAR) {
 407             rspeak(BEAR_BLOCKS);
 408             return GO_CLEAROBJ;
 409         }
 410         if (game.prop[CHAIN] == CHAIN_HEAP) {
 411             rspeak(ALREADY_UNLOCKED);
 412             return GO_CLEAROBJ;
 413         }
 414         game.prop[CHAIN] = CHAIN_HEAP;
 415         game.fixed[CHAIN] = IS_FREE;
 416         if (game.prop[BEAR] != BEAR_DEAD)
 417             game.prop[BEAR] = CONTENTED_BEAR;
 418
 419         switch (game.prop[BEAR]) {
 420         case BEAR_DEAD:
 421             // LCOV_EXCL_START
 422             /* Can't be reached as long as the only way for the bear to die
 423              * is from a bridge collapse. Leave in in case this changes, but
 424              * exclude from coverage testing. */
 425             game.fixed[BEAR] = IS_FIXED;
 426             break;
 427         // LCOV_EXCL_STOP
 428         default:
 429             game.fixed[BEAR] = IS_FREE;
 430         }
 431         rspeak(CHAIN_UNLOCKED);
 432         return GO_CLEAROBJ;
 433     }
 434
 435     if (game.prop[CHAIN] != CHAIN_HEAP) {
 436         rspeak(ALREADY_LOCKED);
 437         return GO_CLEAROBJ;
 438     }
 439     if (game.loc != objects[CHAIN].plac) {
 440         rspeak(NO_LOCKSITE);
 441         return GO_CLEAROBJ;
 442     }
 443
 444     game.prop[CHAIN] = CHAIN_FIXED;
 445
 446     if (TOTING(CHAIN))
 447         drop(CHAIN, game.loc);
 448     game.fixed[CHAIN] = IS_FIXED;
 449
 450     rspeak(CHAIN_LOCKED);
 451     return GO_CLEAROBJ;
 452 }
 453
 454 static int discard(verb_t verb, obj_t obj)
 455 /*  Discard object.  "Throw" also comes here for most objects.  Special cases for
 456  *  bird (might attack snake or dragon) and cage (might contain bird) and vase.
 457  *  Drop coins at vending machine for extra batteries. */
 458 {
 459     if (obj == ROD && !TOTING(ROD) && TOTING(ROD2)) {
 460         obj = ROD2;
 461     }
 462
 463     if (!TOTING(obj)) {
 464         speak(actions[verb].message);
 465         return GO_CLEAROBJ;
 466     }
 467
 468     if (GSTONE(obj) && AT(CAVITY) && game.prop[CAVITY] != CAVITY_FULL) {
 469         rspeak(GEM_FITS);
 470         game.prop[obj] = STATE_IN_CAVITY;
 471         game.prop[CAVITY] = CAVITY_FULL;
 472         if (HERE(RUG) && ((obj == EMERALD && game.prop[RUG] != RUG_HOVER) ||
 473                           (obj == RUBY && game.prop[RUG] == RUG_HOVER))) {
 474             if (obj == RUBY)
 475                 rspeak(RUG_SETTLES);
 476             else if (TOTING(RUG))
 477                 rspeak(RUG_WIGGLES);
 478             else
 479                 rspeak(RUG_RISES);
 480             if (!TOTING(RUG) || obj == RUBY) {
 481                 int k = (game.prop[RUG] == RUG_HOVER) ? RUG_FLOOR : RUG_HOVER;
 482                 game.prop[RUG] = k;
 483                 if (k == RUG_HOVER)
 484                     k = objects[SAPPH].plac;
 485                 move(RUG + NOBJECTS, k);
 486             }
 487         }
 488         drop(obj, game.loc);
 489         return GO_CLEAROBJ;
 490     }
 491
 492     if (obj == COINS && HERE(VEND)) {
 493         DESTROY(COINS);
 494         drop(BATTERY, game.loc);
 495         pspeak(BATTERY, look, FRESH_BATTERIES, true);
 496         return GO_CLEAROBJ;
 497     }
 498
 499     if (LIQUID() == obj)
 500         obj = BOTTLE;
 501     if (obj == BOTTLE && LIQUID() != NO_OBJECT) {
 502         game.place[LIQUID()] = LOC_NOWHERE;
 503     }
 504
 505     if (obj == BEAR && AT(TROLL)) {
 506         state_change(TROLL, TROLL_GONE);
 507         move(TROLL, LOC_NOWHERE);
 508         move(TROLL + NOBJECTS, IS_FREE);
 509         move(TROLL2, objects[TROLL].plac);
 510         move(TROLL2 + NOBJECTS, objects[TROLL].fixd);
 511         juggle(CHASM);
 512         drop(obj, game.loc);
 513         return GO_CLEAROBJ;
 514     }
 515
 516     if (obj == VASE) {
 517         if (game.loc != objects[PILLOW].plac) {
 518             state_change(VASE, AT(PILLOW)
 519                          ? VASE_WHOLE
 520                          : VASE_DROPPED);
 521             if (game.prop[VASE] != VASE_WHOLE)
 522                 game.fixed[VASE] = IS_FIXED;
 523             drop(obj, game.loc);
 524             return GO_CLEAROBJ;
 525         }
 526     }
 527
 528     if (obj == CAGE && game.prop[BIRD] == BIRD_CAGED) {
 529         drop(BIRD, game.loc);
 530     }
 531
 532     if (obj == BIRD) {
 533         if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS) {
 534             rspeak(BIRD_BURNT);
 535             DESTROY(BIRD);
 536             return GO_CLEAROBJ;
 537         }
 538         if (HERE(SNAKE)) {
 539             rspeak(BIRD_ATTACKS);
 540             if (game.closed)
 541                 return GO_DWARFWAKE;
 542             DESTROY(SNAKE);
 543             /* Set game.prop for use by travel options */
 544             game.prop[SNAKE] = SNAKE_CHASED;
 545         } else
 546             rspeak(OK_MAN);
 547
 548         game.prop[BIRD] = BIRD_UNCAGED;
 549         if (FOREST(game.loc))
 550             game.prop[BIRD] = BIRD_FOREST_UNCAGED;
 551         drop(obj, game.loc);
 552         return GO_CLEAROBJ;
 553     }
 554
 555     rspeak(OK_MAN);
 556     drop(obj, game.loc);
 557     return GO_CLEAROBJ;
 558 }
 559
 560 static int drink(verb_t verb, obj_t obj)
 561 /*  Drink.  If no object, assume water and look for it here.  If water is in
 562  *  the bottle, drink that, else must be at a water loc, so drink stream. */
 563 {
 564     if (obj == INTRANSITIVE && LIQLOC(game.loc) != WATER &&
 565         (LIQUID() != WATER || !HERE(BOTTLE))) {
 566         return GO_UNKNOWN;
 567     }
 568
 569     if (obj == BLOOD) {
 570         DESTROY(BLOOD);
 571         state_change(DRAGON, DRAGON_BLOODLESS);
 572         game.blooded = true;
 573         return GO_CLEAROBJ;
 574     }
 575
 576     if (obj != INTRANSITIVE && obj != WATER) {
 577         rspeak(RIDICULOUS_ATTEMPT);
 578         return GO_CLEAROBJ;
 579     }
 580     if (LIQUID() == WATER && HERE(BOTTLE)) {
 581         game.place[WATER] = LOC_NOWHERE;
 582         state_change(BOTTLE, EMPTY_BOTTLE);
 583         return GO_CLEAROBJ;
 584     }
 585
 586     speak(actions[verb].message);
 587     return GO_CLEAROBJ;
 588 }
 589
 590 static int eat(verb_t verb, obj_t obj)
 591 /*  Eat.  Intransitive: assume food if present, else ask what.  Transitive: food
 592  *  ok, some things lose appetite, rest are ridiculous. */
 593 {
 594     switch (obj) {
 595     case INTRANSITIVE:
 596         if (!HERE(FOOD))
 597             return GO_UNKNOWN;
 598     case FOOD:
 599         DESTROY(FOOD);
 600         rspeak(THANKS_DELICIOUS);
 601         break;
 602     case BIRD:
 603     case SNAKE:
 604     case CLAM:
 605     case OYSTER:
 606     case DWARF:
 607     case DRAGON:
 608     case TROLL:
 609     case BEAR:
 610     case OGRE:
 611         rspeak(LOST_APPETITE);
 612         break;
 613     default:
 614         speak(actions[verb].message);
 615     }
 616     return GO_CLEAROBJ;
 617 }
 618
 619 static int extinguish(verb_t verb, obj_t obj)
 620 /* Extinguish.  Lamp, urn, dragon/volcano (nice try). */
 621 {
 622     if (obj == INTRANSITIVE) {
 623         if (HERE(LAMP) && game.prop[LAMP] == LAMP_BRIGHT)
 624             obj = LAMP;
 625         if (HERE(URN) && game.prop[URN] == URN_LIT)
 626             obj = URN;
 627         if (obj == INTRANSITIVE)
 628             return GO_UNKNOWN;
 629     }
 630
 631     switch (obj) {
 632     case URN:
 633         if (game.prop[URN] != URN_EMPTY) {
 634             state_change(URN, URN_DARK);
 635         } else {
 636             pspeak(URN, change, URN_DARK, true);
 637         }
 638         break;
 639     case LAMP:
 640         state_change(LAMP, LAMP_DARK);
 641         rspeak(DARK(game.loc) ?
 642                PITCH_DARK :
 643                NO_MESSAGE);
 644         break;
 645     case DRAGON:
 646     case VOLCANO:
 647         rspeak(BEYOND_POWER);
 648         break;
 649     default:
 650         speak(actions[verb].message);
 651     }
 652     return GO_CLEAROBJ;
 653 }
 654
 655 static int feed(verb_t verb, obj_t obj)
 656 /*  Feed.  If bird, no seed.  Snake, dragon, troll: quip.  If dwarf, make him
 657  *  mad.  Bear, special. */
 658 {
 659     switch (obj) {
 660     case BIRD:
 661         rspeak(BIRD_PINING);
 662         break;
 663     case DRAGON:
 664         if (game.prop[DRAGON] != DRAGON_BARS)
 665             rspeak(RIDICULOUS_ATTEMPT);
 666         else
 667             rspeak(NOTHING_EDIBLE);
 668         break;
 669     case SNAKE:
 670         if (!game.closed && HERE(BIRD)) {
 671             DESTROY(BIRD);
 672             rspeak(BIRD_DEVOURED);
 673         } else
 674             rspeak(NOTHING_EDIBLE);
 675         break;
 676     case TROLL:
 677         rspeak(TROLL_VICES);
 678         break;
 679     case DWARF:
 680         if (HERE(FOOD)) {
 681             game.dflag += 2;
 682             rspeak(REALLY_MAD);
 683         } else
 684             speak(actions[verb].message);
 685         break;
 686     case BEAR:
 687         if (game.prop[BEAR] == BEAR_DEAD) {
 688             rspeak(RIDICULOUS_ATTEMPT);
 689             break;
 690         }
 691         if (game.prop[BEAR] == UNTAMED_BEAR) {
 692             if (HERE(FOOD)) {
 693                 DESTROY(FOOD);
 694                 game.fixed[AXE] = IS_FREE;
 695                 game.prop[AXE] = AXE_HERE;
 696                 state_change(BEAR, SITTING_BEAR);
 697             } else
 698                 rspeak(NOTHING_EDIBLE);
 699             break;
 700         }
 701         speak(actions[verb].message);
 702         break;
 703     case OGRE:
 704         if (HERE(FOOD))
 705             rspeak(OGRE_FULL);
 706         else
 707             speak(actions[verb].message);
 708         break;
 709     default:
 710         rspeak(AM_GAME);
 711     }
 712     return GO_CLEAROBJ;
 713 }
 714
 715 int fill(verb_t verb, obj_t obj)
 716 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 717  *  is nasty.) */
 718 {
 719     if (obj == VASE) {
 720         if (LIQLOC(game.loc) == NO_OBJECT) {
 721             rspeak(FILL_INVALID);
 722             return GO_CLEAROBJ;
 723         }
 724         if (!TOTING(VASE)) {
 725             rspeak(ARENT_CARRYING);
 726             return GO_CLEAROBJ;
 727         }
 728         rspeak(SHATTER_VASE);
 729         game.prop[VASE] = VASE_BROKEN;
 730         game.fixed[VASE] = IS_FIXED;
 731         drop(VASE, game.loc);
 732         return GO_CLEAROBJ;
 733     }
 734
 735     if (obj == URN) {
 736         if (game.prop[URN] != URN_EMPTY) {
 737             rspeak(FULL_URN);
 738             return GO_CLEAROBJ;
 739         }
 740         if (!HERE(BOTTLE)) {
 741             rspeak(FILL_INVALID);
 742             return GO_CLEAROBJ;
 743         }
 744         int k = LIQUID();
 745         switch (k) {
 746         case WATER:
 747             game.prop[BOTTLE] = EMPTY_BOTTLE;
 748             rspeak(WATER_URN);
 749             break;
 750         case OIL:
 751             game.prop[URN] = URN_DARK;
 752             game.prop[BOTTLE] = EMPTY_BOTTLE;
 753             rspeak(OIL_URN);
 754             break;
 755         case NO_OBJECT:
 756         default:
 757             rspeak(FILL_INVALID);
 758             return GO_CLEAROBJ;
 759         }
 760         game.place[k] = LOC_NOWHERE;
 761         return GO_CLEAROBJ;
 762     }
 763     if (obj != INTRANSITIVE && obj != BOTTLE) {
 764         speak(actions[verb].message);
 765         return GO_CLEAROBJ;
 766     }
 767     if (obj == INTRANSITIVE && !HERE(BOTTLE))
 768         return GO_UNKNOWN;
 769
 770     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 771         rspeak(URN_NOPOUR);
 772         return GO_CLEAROBJ;
 773     }
 774     if (LIQUID() != NO_OBJECT) {
 775         rspeak(BOTTLE_FULL);
 776         return GO_CLEAROBJ;
 777     }
 778     if (LIQLOC(game.loc) == NO_OBJECT) {
 779         rspeak(NO_LIQUID);
 780         return GO_CLEAROBJ;
 781     }
 782
 783     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 784                  ? OIL_BOTTLE
 785                  : WATER_BOTTLE);
 786     if (TOTING(BOTTLE))
 787         game.place[LIQUID()] = CARRIED;
 788     return GO_CLEAROBJ;
 789 }
 790
 791 static int find(verb_t verb, obj_t obj)
 792 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 793 {
 794     if (TOTING(obj)) {
 795         rspeak(ALREADY_CARRYING);
 796         return GO_CLEAROBJ;
 797     }
 798
 799     if (game.closed) {
 800         rspeak(NEEDED_NEARBY);
 801         return GO_CLEAROBJ;
 802     }
 803
 804     if (AT(obj) ||
 805         (LIQUID() == obj && AT(BOTTLE)) ||
 806         obj == LIQLOC(game.loc) ||
 807         (obj == DWARF && atdwrf(game.loc) > 0)) {
 808         rspeak(YOU_HAVEIT);
 809         return GO_CLEAROBJ;
 810     }
 811
 812
 813     speak(actions[verb].message);
 814     return GO_CLEAROBJ;
 815 }
 816
 817 static int fly(verb_t verb, obj_t obj)
 818 /* Fly.  Snide remarks unless hovering rug is here. */
 819 {
 820     if (obj == INTRANSITIVE) {
 821         if (!HERE(RUG)) {
 822             rspeak(FLAP_ARMS);
 823             return GO_CLEAROBJ;
 824         }
 825         if (game.prop[RUG] != RUG_HOVER) {
 826             rspeak(RUG_NOTHING2);
 827             return GO_CLEAROBJ;
 828         }
 829         obj = RUG;
 830     }
 831
 832     if (obj != RUG) {
 833         speak(actions[verb].message);
 834         return GO_CLEAROBJ;
 835     }
 836     if (game.prop[RUG] != RUG_HOVER) {
 837         rspeak(RUG_NOTHING1);
 838         return GO_CLEAROBJ;
 839     }
 840     game.oldlc2 = game.oldloc;
 841     game.oldloc = game.loc;
 842
 843     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 844         game.newloc = game.place[SAPPH];
 845         rspeak(RUG_GOES);
 846     } else {
 847         game.newloc = LOC_CLIFF;
 848         rspeak(RUG_RETURNS);
 849     }
 850     return GO_TERMINATE;
 851 }
 852
 853 static int inven(void)
 854 /* Inventory. If object, treat same as find.  Else report on current burden. */
 855 {
 856     bool empty = true;
 857     for (obj_t i = 1; i <= NOBJECTS; i++) {
 858         if (i == BEAR ||
 859             !TOTING(i))
 860             continue;
 861         if (empty) {
 862             rspeak(NOW_HOLDING);
 863             empty = false;
 864         }
 865         pspeak(i, touch, -1, false);
 866     }
 867     if (TOTING(BEAR))
 868         rspeak(TAME_BEAR);
 869     if (empty)
 870         rspeak(NO_CARRY);
 871     return GO_CLEAROBJ;
 872 }
 873
 874 static int light(verb_t verb, obj_t obj)
 875 /*  Light.  Applicable only to lamp and urn. */
 876 {
 877     if (obj == INTRANSITIVE) {
 878         int selects = 0;
 879         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0) {
 880             obj = LAMP;
 881             selects++;
 882         }
 883         if (HERE(URN) && game.prop[URN] == URN_DARK) {
 884             obj =  URN;
 885             selects++;
 886         }
 887         if (selects != 1)
 888             return GO_UNKNOWN;
 889     }
 890
 891     switch (obj) {
 892     case URN:
 893         state_change(URN, game.prop[URN] == URN_EMPTY ?
 894                      URN_EMPTY :
 895                      URN_LIT);
 896         break;
 897     case LAMP:
 898         if (game.limit < 0) {
 899             rspeak(LAMP_OUT);
 900             break;
 901         }
 902         state_change(LAMP, LAMP_BRIGHT);
 903         if (game.wzdark)
 904             return GO_TOP;
 905         break;
 906     default:
 907         speak(actions[verb].message);
 908     }
 909     return GO_CLEAROBJ;
 910 }
 911
 912 static int listen(void)
 913 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 914 {
 915     long sound = locations[game.loc].sound;
 916     if (sound != SILENT) {
 917         rspeak(sound);
 918         if (!locations[game.loc].loud)
 919             rspeak(NO_MESSAGE);
 920         return GO_CLEAROBJ;
 921     }
 922     for (obj_t i = 1; i <= NOBJECTS; i++) {
 923         if (!HERE(i) ||
 924             objects[i].sounds[0] == NULL ||
 925             game.prop[i] < 0)
 926             continue;
 927         int mi =  game.prop[i];
 928         /* (ESR) Some unpleasant magic on object states here. Ideally
 929          * we'd have liked the bird to be a normal object that we can
 930          * use state_change() on; can't do it, because there are
 931          * actually two different series of per-state birdsounds
 932          * depending on whether player has drunk dragon's blood. */
 933         if (i == BIRD)
 934             mi += 3 * game.blooded;
 935         long packed_zzword = token_to_packed(game.zzword);
 936         pspeak(i, hear, mi, true, packed_zzword);
 937         rspeak(NO_MESSAGE);
 938         if (i == BIRD && mi == BIRD_ENDSTATE)
 939             DESTROY(BIRD);
 940         return GO_CLEAROBJ;
 941     }
 942     rspeak(ALL_SILENT);
 943     return GO_CLEAROBJ;
 944 }
 945
 946 static int lock(verb_t verb, obj_t obj)
 947 /* Lock, unlock, no object given.  Assume various things if present. */
 948 {
 949     if (obj == INTRANSITIVE) {
 950         if (HERE(CLAM))
 951             obj = CLAM;
 952         if (HERE(OYSTER))
 953             obj = OYSTER;
 954         if (AT(DOOR))
 955             obj = DOOR;
 956         if (AT(GRATE))
 957             obj = GRATE;
 958         if (HERE(CHAIN))
 959             obj = CHAIN;
 960         if (obj == INTRANSITIVE) {
 961             rspeak(NOTHING_LOCKED);
 962             return GO_CLEAROBJ;
 963         }
 964     }
 965
 966     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 967      *  and for chain. */
 968
 969     switch (obj) {
 970     case CHAIN:
 971         if (HERE(KEYS)) {
 972             return chain(verb);
 973         } else
 974             rspeak(NO_KEYS);
 975         break;
 976     case GRATE:
 977         if (HERE(KEYS)) {
 978             if (game.closng) {
 979                 rspeak(EXIT_CLOSED);
 980                 if (!game.panic)
 981                     game.clock2 = PANICTIME;
 982                 game.panic = true;
 983             } else {
 984                 state_change(GRATE, (verb == LOCK) ?
 985                              GRATE_CLOSED :
 986                              GRATE_OPEN);
 987             }
 988         } else
 989             rspeak(NO_KEYS);
 990         break;
 991     case CLAM:
 992         if (verb == LOCK)
 993             rspeak(HUH_MAN);
 994         else if (!TOTING(TRIDENT))
 995             rspeak(CLAM_OPENER);
 996         else {
 997             DESTROY(CLAM);
 998             drop(OYSTER, game.loc);
 999             drop(PEARL, LOC_CULDESAC);
1000             rspeak(PEARL_FALLS);
1001         }
1002         break;
1003     case OYSTER:
1004         if (verb == LOCK)
1005             rspeak(HUH_MAN);
1006         else if (TOTING(OYSTER))
1007             rspeak(DROP_OYSTER);
1008         else if (!TOTING(TRIDENT))
1009             rspeak(OYSTER_OPENER);
1010         else
1011             rspeak(OYSTER_OPENS);
1012         break;
1013     case DOOR:
1014         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
1015         break;
1016     case CAGE:
1017         rspeak( NO_LOCK);
1018         break;
1019     case KEYS:
1020         rspeak(CANNOT_UNLOCK);
1021         break;
1022     default:
1023         speak(actions[verb].message);
1024     }
1025
1026     return GO_CLEAROBJ;
1027 }
1028
1029 static int pour(verb_t verb, obj_t obj)
1030 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
1031  *  special tests for pouring water or oil on plant or rusty door. */
1032 {
1033     if (obj == BOTTLE ||
1034         obj == INTRANSITIVE)
1035         obj = LIQUID();
1036     if (obj == NO_OBJECT)
1037         return GO_UNKNOWN;
1038     if (!TOTING(obj)) {
1039         speak(actions[verb].message);
1040         return GO_CLEAROBJ;
1041     }
1042
1043     if (obj != OIL && obj != WATER) {
1044         rspeak(CANT_POUR);
1045         return GO_CLEAROBJ;
1046     }
1047     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1048         return fill(verb, URN);
1049     game.prop[BOTTLE] = EMPTY_BOTTLE;
1050     game.place[obj] = LOC_NOWHERE;
1051     if (!(AT(PLANT) ||
1052           AT(DOOR))) {
1053         rspeak(GROUND_WET);
1054         return GO_CLEAROBJ;
1055     }
1056     if (!AT(DOOR)) {
1057         if (obj == WATER) {
1058             /* cycle through the three plant states */
1059             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1060             game.prop[PLANT2] = game.prop[PLANT];
1061             return GO_MOVE;
1062         } else {
1063             rspeak(SHAKING_LEAVES);
1064             return GO_CLEAROBJ;
1065         }
1066     } else {
1067         state_change(DOOR, (obj == OIL) ?
1068                      DOOR_UNRUSTED :
1069                      DOOR_RUSTED);
1070         return GO_CLEAROBJ;
1071     }
1072 }
1073
1074 static int quit(void)
1075 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1076 {
1077     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1078         terminate(quitgame);
1079     return GO_CLEAROBJ;
1080 }
1081
1082 static int read(struct command_t command)
1083 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1084 {
1085     if (command.obj == INTRANSITIVE) {
1086         command.obj = NO_OBJECT;
1087         for (int i = 1; i <= NOBJECTS; i++) {
1088             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1089                 command.obj = command.obj * NOBJECTS + i;
1090         }
1091         if (command.obj > NOBJECTS ||
1092             command.obj == NO_OBJECT ||
1093             DARK(game.loc))
1094             return GO_UNKNOWN;
1095     }
1096
1097     if (DARK(game.loc)) {
1098         sspeak(NO_SEE, command.raw1);
1099     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1100         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1101     } else if (objects[command.obj].texts[0] == NULL ||
1102                game.prop[command.obj] == STATE_NOTFOUND) {
1103         speak(actions[command.verb].message);
1104     } else
1105         pspeak(command.obj, study, game.prop[command.obj], true);
1106     return GO_CLEAROBJ;
1107 }
1108
1109 static int reservoir(void)
1110 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1111 {
1112     if (!AT(RESER) && game.loc != LOC_RESBOTTOM) {
1113         rspeak(NOTHING_HAPPENS);
1114         return GO_CLEAROBJ;
1115     } else {
1116         state_change(RESER,
1117                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1118         if (AT(RESER))
1119             return GO_CLEAROBJ;
1120         else {
1121             game.oldlc2 = game.loc;
1122             game.newloc = LOC_NOWHERE;
1123             rspeak(NOT_BRIGHT);
1124             return GO_TERMINATE;
1125         }
1126     }
1127 }
1128
1129 static int rub(verb_t verb, obj_t obj)
1130 /* Rub.  Yields various snide remarks except for lit urn. */
1131 {
1132     if (obj == URN && game.prop[URN] == URN_LIT) {
1133         DESTROY(URN);
1134         drop(AMBER, game.loc);
1135         game.prop[AMBER] = AMBER_IN_ROCK;
1136         --game.tally;
1137         drop(CAVITY, game.loc);
1138         rspeak(URN_GENIES);
1139     } else if (obj != LAMP) {
1140         rspeak(PECULIAR_NOTHING);
1141     } else {
1142         speak(actions[verb].message);
1143     }
1144     return GO_CLEAROBJ;
1145 }
1146
1147 static int say(struct command_t *command)
1148 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1149 {
1150     if (command->wd2 > 0) {
1151         command->wd1 = command->wd2;
1152         strncpy(command->raw1, command->raw2, LINESIZE - 1);
1153     }
1154     char word1[TOKLEN + 1];
1155     packed_to_token(command->wd1, word1);
1156     long wd;
1157     enum wordtype type;
1158     get_vocab_metadata(word1, &wd, &type);
1159     if (wd == XYZZY ||
1160         wd == PLUGH ||
1161         wd == PLOVER ||
1162         wd == FEE ||
1163         wd == FIE ||
1164         wd == FOE ||
1165         wd == FOO ||
1166         wd == FUM ||
1167         wd == PART) {
1168         /* FIXME: scribbles on the interpreter's command block */
1169         wordclear(&command->wd2);
1170         return GO_LOOKUP;
1171     }
1172     sspeak(OKEY_DOKEY, command->raw1);
1173     return GO_CLEAROBJ;
1174 }
1175
1176 static int throw_support(long spk)
1177 {
1178     rspeak(spk);
1179     drop(AXE, game.loc);
1180     return GO_MOVE;
1181 }
1182
1183 static int throw (struct command_t *command)
1184 /*  Throw.  Same as discard unless axe.  Then same as attack except
1185  *  ignore bird, and if dwarf is present then one might be killed.
1186  *  (Only way to do so!)  Axe also special for dragon, bear, and
1187  *  troll.  Treasures special for troll. */
1188 {
1189     if (!TOTING(command->obj)) {
1190         speak(actions[command->verb].message);
1191         return GO_CLEAROBJ;
1192     }
1193     if (objects[command->obj].is_treasure && AT(TROLL)) {
1194         /*  Snarf a treasure for the troll. */
1195         drop(command->obj, LOC_NOWHERE);
1196         move(TROLL, LOC_NOWHERE);
1197         move(TROLL + NOBJECTS, IS_FREE);
1198         drop(TROLL2, objects[TROLL].plac);
1199         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1200         juggle(CHASM);
1201         rspeak(TROLL_SATISFIED);
1202         return GO_CLEAROBJ;
1203     }
1204     if (command->obj == FOOD && HERE(BEAR)) {
1205         /* But throwing food is another story. */
1206         command->obj = BEAR;
1207         return (feed(command->verb, command->obj));
1208     }
1209     if (command->obj != AXE)
1210         return (discard(command->verb, command->obj));
1211     else {
1212         if (atdwrf(game.loc) <= 0) {
1213             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1214                 return throw_support(DRAGON_SCALES);
1215             if (AT(TROLL))
1216                 return throw_support(TROLL_RETURNS);
1217             if (AT(OGRE))
1218                 return throw_support(OGRE_DODGE);
1219             if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1220                 /* This'll teach him to throw the axe at the bear! */
1221                 drop(AXE, game.loc);
1222                 game.fixed[AXE] = IS_FIXED;
1223                 juggle(BEAR);
1224                 state_change(AXE, AXE_LOST);
1225                 return GO_CLEAROBJ;
1226             }
1227             command->obj = INTRANSITIVE;
1228             return (attack(command));
1229         }
1230
1231         if (randrange(NDWARVES + 1) < game.dflag) {
1232             return throw_support(DWARF_DODGES);
1233         } else {
1234             long i = atdwrf(game.loc);
1235             game.dseen[i] = false;
1236             game.dloc[i] = LOC_NOWHERE;
1237             return throw_support((++game.dkill == 1) ?
1238                                  DWARF_SMOKE :
1239                                  KILLED_DWARF);
1240         }
1241     }
1242 }
1243
1244 static int wake(verb_t verb, obj_t obj)
1245 /* Wake.  Only use is to disturb the dwarves. */
1246 {
1247     if (obj != DWARF ||
1248         !game.closed) {
1249         speak(actions[verb].message);
1250         return GO_CLEAROBJ;
1251     } else {
1252         rspeak(PROD_DWARF);
1253         return GO_DWARFWAKE;
1254     }
1255 }
1256
1257 static int wave(verb_t verb, obj_t obj)
1258 /* Wave.  No effect unless waving rod at fissure or at bird. */
1259 {
1260     if (obj != ROD ||
1261         !TOTING(obj) ||
1262         (!HERE(BIRD) &&
1263          (game.closng ||
1264           !AT(FISSURE)))) {
1265         speak(((!TOTING(obj)) && (obj != ROD ||
1266                                   !TOTING(ROD2))) ?
1267               arbitrary_messages[ARENT_CARRYING] :
1268               actions[verb].message);
1269         return GO_CLEAROBJ;
1270     }
1271
1272     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] == STATE_NOTFOUND) {
1273         drop(JADE, game.loc);
1274         game.prop[JADE] = STATE_FOUND;
1275         --game.tally;
1276         rspeak(NECKLACE_FLY);
1277         return GO_CLEAROBJ;
1278     } else {
1279         if (game.closed) {
1280             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1281                    CAGE_FLY :
1282                    FREE_FLY);
1283             return GO_DWARFWAKE;
1284         }
1285         if (game.closng ||
1286             !AT(FISSURE)) {
1287             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1288                    CAGE_FLY :
1289                    FREE_FLY);
1290             return GO_CLEAROBJ;
1291         }
1292         if (HERE(BIRD))
1293             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1294                    CAGE_FLY :
1295                    FREE_FLY);
1296
1297         state_change(FISSURE,
1298                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1299         return GO_CLEAROBJ;
1300     }
1301 }
1302
1303 int action(struct command_t *command)
1304 /*  Analyse a verb.  Remember what it was, go back for object if second word
1305  *  unless verb is "say", which snarfs arbitrary second word.
1306  */
1307 {
1308     if (command->part == unknown) {
1309         /*  Analyse an object word.  See if the thing is here, whether
1310          *  we've got a verb yet, and so on.  Object must be here
1311          *  unless verb is "find" or "invent(ory)" (and no new verb
1312          *  yet to be analysed).  Water and oil are also funny, since
1313          *  they are never actually dropped at any location, but might
1314          *  be here inside the bottle or urn or as a feature of the
1315          *  location. */
1316         if (HERE(command->obj))
1317             /* FALL THROUGH */;
1318         else if (command->obj == GRATE) {
1319             if (game.loc == LOC_START ||
1320                 game.loc == LOC_VALLEY ||
1321                 game.loc == LOC_SLIT) {
1322                 command->obj = DPRSSN;
1323             }
1324             if (game.loc == LOC_COBBLE ||
1325                 game.loc == LOC_DEBRIS ||
1326                 game.loc == LOC_AWKWARD ||
1327                 game.loc == LOC_BIRD ||
1328                 game.loc == LOC_PITTOP) {
1329                 command->obj = ENTRNC;
1330             }
1331         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1332             /* FALL THROUGH */;
1333         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1334                  command->obj == LIQLOC(game.loc))
1335             /* FALL THROUGH */;
1336         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != URN_EMPTY) {
1337             command->obj = URN;
1338             /* FALL THROUGH */;
1339         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != PLANT_THIRSTY) {
1340             command->obj = PLANT2;
1341             /* FALL THROUGH */;
1342         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1343             game.knfloc = -1;
1344             rspeak(KNIVES_VANISH);
1345             return GO_CLEAROBJ;
1346         } else if (command->obj == ROD && HERE(ROD2)) {
1347             command->obj = ROD2;
1348             /* FALL THROUGH */;
1349         } else if ((command->verb == FIND ||
1350                     command->verb == INVENTORY) && command->wd2 <= 0)
1351             /* FALL THROUGH */;
1352         else {
1353             sspeak(NO_SEE, command->raw1);
1354             return GO_CLEAROBJ;
1355         }
1356
1357         if (command->wd2 > 0)
1358             return GO_WORD2;
1359         if (command->verb != 0)
1360             command->part = transitive;
1361     }
1362
1363     switch (command->part) {
1364     case intransitive:
1365         if (command->wd2 > 0 && command->verb != SAY)
1366             return GO_WORD2;
1367         if (command->verb == SAY)
1368             command->obj = command->wd2;
1369         if (command->obj == NO_OBJECT ||
1370             command->obj == INTRANSITIVE) {
1371             /*  Analyse an intransitive verb (ie, no object given yet). */
1372             switch (command->verb) {
1373             case CARRY:
1374                 return vcarry(command->verb, INTRANSITIVE);
1375             case  DROP:
1376                 return GO_UNKNOWN;
1377             case  SAY:
1378                 return GO_UNKNOWN;
1379             case  UNLOCK:
1380                 return lock(command->verb, INTRANSITIVE);
1381             case  NOTHING: {
1382                 rspeak(OK_MAN);
1383                 return (GO_CLEAROBJ);
1384             }
1385             case  LOCK:
1386                 return lock(command->verb, INTRANSITIVE);
1387             case  LIGHT:
1388                 return light(command->verb, INTRANSITIVE);
1389             case  EXTINGUISH:
1390                 return extinguish(command->verb, INTRANSITIVE);
1391             case  WAVE:
1392                 return GO_UNKNOWN;
1393             case  TAME:
1394                 return GO_UNKNOWN;
1395             case GO: {
1396                 speak(actions[command->verb].message);
1397                 return GO_CLEAROBJ;
1398             }
1399             case ATTACK:
1400                 command->obj = INTRANSITIVE;
1401                 return attack(command);
1402             case POUR:
1403                 return pour(command->verb, INTRANSITIVE);
1404             case EAT:
1405                 return eat(command->verb, INTRANSITIVE);
1406             case DRINK:
1407                 return drink(command->verb, INTRANSITIVE);
1408             case RUB:
1409                 return GO_UNKNOWN;
1410             case THROW:
1411                 return GO_UNKNOWN;
1412             case QUIT:
1413                 return quit();
1414             case FIND:
1415                 return GO_UNKNOWN;
1416             case INVENTORY:
1417                 return inven();
1418             case FEED:
1419                 return GO_UNKNOWN;
1420             case FILL:
1421                 return fill(command->verb, INTRANSITIVE);
1422             case BLAST:
1423                 blast();
1424                 return GO_CLEAROBJ;
1425             case SCORE:
1426                 score(scoregame);
1427                 return GO_CLEAROBJ;
1428             case FEE:
1429             case FIE:
1430             case FOE:
1431             case FOO:
1432             case FUM:
1433                 return bigwords(command->id1);
1434             case BRIEF:
1435                 return brief();
1436             case READ:
1437                 command->obj = INTRANSITIVE;
1438                 return read(*command);
1439             case BREAK:
1440                 return GO_UNKNOWN;
1441             case WAKE:
1442                 return GO_UNKNOWN;
1443             case SAVE:
1444                 return suspend();
1445             case RESUME:
1446                 return resume();
1447             case FLY:
1448                 return fly(command->verb, INTRANSITIVE);
1449             case LISTEN:
1450                 return listen();
1451             case PART:
1452                 return reservoir();
1453             default:
1454                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1455             }
1456         }
1457     /* FALLTHRU */
1458     case transitive:
1459         /*  Analyse a transitive verb. */
1460         switch (command->verb) {
1461         case  CARRY:
1462             return vcarry(command->verb, command->obj);
1463         case  DROP:
1464             return discard(command->verb, command->obj);
1465         case  SAY:
1466             return say(command);
1467         case  UNLOCK:
1468             return lock(command->verb, command->obj);
1469         case  NOTHING: {
1470             rspeak(OK_MAN);
1471             return (GO_CLEAROBJ);
1472         }
1473         case  LOCK:
1474             return lock(command->verb, command->obj);
1475         case LIGHT:
1476             return light(command->verb, command->obj);
1477         case EXTINGUISH:
1478             return extinguish(command->verb, command->obj);
1479         case WAVE:
1480             return wave(command->verb, command->obj);
1481         case TAME: {
1482             speak(actions[command->verb].message);
1483             return GO_CLEAROBJ;
1484         }
1485         case GO: {
1486             speak(actions[command->verb].message);
1487             return GO_CLEAROBJ;
1488         }
1489         case ATTACK:
1490             return attack(command);
1491         case POUR:
1492             return pour(command->verb, command->obj);
1493         case EAT:
1494             return eat(command->verb, command->obj);
1495         case DRINK:
1496             return drink(command->verb, command->obj);
1497         case RUB:
1498             return rub(command->verb, command->obj);
1499         case THROW:
1500             return throw (command);
1501         case QUIT: {
1502             speak(actions[command->verb].message);
1503             return GO_CLEAROBJ;
1504         }
1505         case FIND:
1506             return find(command->verb, command->obj);
1507         case INVENTORY:
1508             return find(command->verb, command->obj);
1509         case FEED:
1510             return feed(command->verb, command->obj);
1511         case FILL:
1512             return fill(command->verb, command->obj);
1513         case BLAST:
1514             blast();
1515             return GO_CLEAROBJ;
1516         case SCORE: {
1517             speak(actions[command->verb].message);
1518             return GO_CLEAROBJ;
1519         }
1520         case FEE:
1521         case FIE:
1522         case FOE:
1523         case FOO:
1524         case FUM: {
1525             speak(actions[command->verb].message);
1526             return GO_CLEAROBJ;
1527         }
1528         case BRIEF: {
1529             speak(actions[command->verb].message);
1530             return GO_CLEAROBJ;
1531         }
1532         case READ:
1533             return read(*command);
1534         case BREAK:
1535             return vbreak(command->verb, command->obj);
1536         case WAKE:
1537             return wake(command->verb, command->obj);
1538         case SAVE: {
1539             speak(actions[command->verb].message);
1540             return GO_CLEAROBJ;
1541         }
1542         case RESUME: {
1543             speak(actions[command->verb].message);
1544             return GO_CLEAROBJ;
1545         }
1546         case FLY:
1547             return fly(command->verb, command->obj);
1548         case LISTEN: {
1549             speak(actions[command->verb].message);
1550             return GO_CLEAROBJ;
1551         }
1552         case PART:
1553             return reservoir();
1554         default:
1555             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1556         }
1557     case unknown:
1558         /* Unknown verb, couldn't deduce object - might need hint */
1559         sspeak(WHAT_DO, command->raw1);
1560         return GO_CHECKHINT;
1561     default:
1562         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1563     }
1564 }