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