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             state_change(MIRROR, MIRROR_BROKEN);
 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] = FOREST(game.loc) ? BIRD_FOREST_UNCAGED : BIRD_UNCAGED;
 549         drop(obj, game.loc);
 550         return GO_CLEAROBJ;
 551     }
 552
 553     rspeak(OK_MAN);
 554     drop(obj, game.loc);
 555     return GO_CLEAROBJ;
 556 }
 557
 558 static int drink(verb_t verb, obj_t obj)
 559 /*  Drink.  If no object, assume water and look for it here.  If water is in
 560  *  the bottle, drink that, else must be at a water loc, so drink stream. */
 561 {
 562     if (obj == INTRANSITIVE && LIQLOC(game.loc) != WATER &&
 563         (LIQUID() != WATER || !HERE(BOTTLE))) {
 564         return GO_UNKNOWN;
 565     }
 566
 567     if (obj == BLOOD) {
 568         DESTROY(BLOOD);
 569         state_change(DRAGON, DRAGON_BLOODLESS);
 570         game.blooded = true;
 571         return GO_CLEAROBJ;
 572     }
 573
 574     if (obj != INTRANSITIVE && obj != WATER) {
 575         rspeak(RIDICULOUS_ATTEMPT);
 576         return GO_CLEAROBJ;
 577     }
 578     if (LIQUID() == WATER && HERE(BOTTLE)) {
 579         game.place[WATER] = LOC_NOWHERE;
 580         state_change(BOTTLE, EMPTY_BOTTLE);
 581         return GO_CLEAROBJ;
 582     }
 583
 584     speak(actions[verb].message);
 585     return GO_CLEAROBJ;
 586 }
 587
 588 static int eat(verb_t verb, obj_t obj)
 589 /*  Eat.  Intransitive: assume food if present, else ask what.  Transitive: food
 590  *  ok, some things lose appetite, rest are ridiculous. */
 591 {
 592     switch (obj) {
 593     case INTRANSITIVE:
 594         if (!HERE(FOOD))
 595             return GO_UNKNOWN;
 596     case FOOD:
 597         DESTROY(FOOD);
 598         rspeak(THANKS_DELICIOUS);
 599         break;
 600     case BIRD:
 601     case SNAKE:
 602     case CLAM:
 603     case OYSTER:
 604     case DWARF:
 605     case DRAGON:
 606     case TROLL:
 607     case BEAR:
 608     case OGRE:
 609         rspeak(LOST_APPETITE);
 610         break;
 611     default:
 612         speak(actions[verb].message);
 613     }
 614     return GO_CLEAROBJ;
 615 }
 616
 617 static int extinguish(verb_t verb, obj_t obj)
 618 /* Extinguish.  Lamp, urn, dragon/volcano (nice try). */
 619 {
 620     if (obj == INTRANSITIVE) {
 621         if (HERE(LAMP) && game.prop[LAMP] == LAMP_BRIGHT)
 622             obj = LAMP;
 623         if (HERE(URN) && game.prop[URN] == URN_LIT)
 624             obj = URN;
 625         if (obj == INTRANSITIVE)
 626             return GO_UNKNOWN;
 627     }
 628
 629     switch (obj) {
 630     case URN:
 631         if (game.prop[URN] != URN_EMPTY) {
 632             state_change(URN, URN_DARK);
 633         } else {
 634             pspeak(URN, change, URN_DARK, true);
 635         }
 636         break;
 637     case LAMP:
 638         state_change(LAMP, LAMP_DARK);
 639         rspeak(DARK(game.loc) ?
 640                PITCH_DARK :
 641                NO_MESSAGE);
 642         break;
 643     case DRAGON:
 644     case VOLCANO:
 645         rspeak(BEYOND_POWER);
 646         break;
 647     default:
 648         speak(actions[verb].message);
 649     }
 650     return GO_CLEAROBJ;
 651 }
 652
 653 static int feed(verb_t verb, obj_t obj)
 654 /*  Feed.  If bird, no seed.  Snake, dragon, troll: quip.  If dwarf, make him
 655  *  mad.  Bear, special. */
 656 {
 657     switch (obj) {
 658     case BIRD:
 659         rspeak(BIRD_PINING);
 660         break;
 661     case DRAGON:
 662         if (game.prop[DRAGON] != DRAGON_BARS)
 663             rspeak(RIDICULOUS_ATTEMPT);
 664         else
 665             rspeak(NOTHING_EDIBLE);
 666         break;
 667     case SNAKE:
 668         if (!game.closed && HERE(BIRD)) {
 669             DESTROY(BIRD);
 670             rspeak(BIRD_DEVOURED);
 671         } else
 672             rspeak(NOTHING_EDIBLE);
 673         break;
 674     case TROLL:
 675         rspeak(TROLL_VICES);
 676         break;
 677     case DWARF:
 678         if (HERE(FOOD)) {
 679             game.dflag += 2;
 680             rspeak(REALLY_MAD);
 681         } else
 682             speak(actions[verb].message);
 683         break;
 684     case BEAR:
 685         if (game.prop[BEAR] == BEAR_DEAD) {
 686             rspeak(RIDICULOUS_ATTEMPT);
 687             break;
 688         }
 689         if (game.prop[BEAR] == UNTAMED_BEAR) {
 690             if (HERE(FOOD)) {
 691                 DESTROY(FOOD);
 692                 game.fixed[AXE] = IS_FREE;
 693                 game.prop[AXE] = AXE_HERE;
 694                 state_change(BEAR, SITTING_BEAR);
 695             } else
 696                 rspeak(NOTHING_EDIBLE);
 697             break;
 698         }
 699         speak(actions[verb].message);
 700         break;
 701     case OGRE:
 702         if (HERE(FOOD))
 703             rspeak(OGRE_FULL);
 704         else
 705             speak(actions[verb].message);
 706         break;
 707     default:
 708         rspeak(AM_GAME);
 709     }
 710     return GO_CLEAROBJ;
 711 }
 712
 713 int fill(verb_t verb, obj_t obj)
 714 /*  Fill.  Bottle or urn must be empty, and liquid available.  (Vase
 715  *  is nasty.) */
 716 {
 717     if (obj == VASE) {
 718         if (LIQLOC(game.loc) == NO_OBJECT) {
 719             rspeak(FILL_INVALID);
 720             return GO_CLEAROBJ;
 721         }
 722         if (!TOTING(VASE)) {
 723             rspeak(ARENT_CARRYING);
 724             return GO_CLEAROBJ;
 725         }
 726         rspeak(SHATTER_VASE);
 727         game.prop[VASE] = VASE_BROKEN;
 728         game.fixed[VASE] = IS_FIXED;
 729         drop(VASE, game.loc);
 730         return GO_CLEAROBJ;
 731     }
 732
 733     if (obj == URN) {
 734         if (game.prop[URN] != URN_EMPTY) {
 735             rspeak(FULL_URN);
 736             return GO_CLEAROBJ;
 737         }
 738         if (!HERE(BOTTLE)) {
 739             rspeak(FILL_INVALID);
 740             return GO_CLEAROBJ;
 741         }
 742         int k = LIQUID();
 743         switch (k) {
 744         case WATER:
 745             game.prop[BOTTLE] = EMPTY_BOTTLE;
 746             rspeak(WATER_URN);
 747             break;
 748         case OIL:
 749             game.prop[URN] = URN_DARK;
 750             game.prop[BOTTLE] = EMPTY_BOTTLE;
 751             rspeak(OIL_URN);
 752             break;
 753         case NO_OBJECT:
 754         default:
 755             rspeak(FILL_INVALID);
 756             return GO_CLEAROBJ;
 757         }
 758         game.place[k] = LOC_NOWHERE;
 759         return GO_CLEAROBJ;
 760     }
 761     if (obj != INTRANSITIVE && obj != BOTTLE) {
 762         speak(actions[verb].message);
 763         return GO_CLEAROBJ;
 764     }
 765     if (obj == INTRANSITIVE && !HERE(BOTTLE))
 766         return GO_UNKNOWN;
 767
 768     if (HERE(URN) && game.prop[URN] != URN_EMPTY) {
 769         rspeak(URN_NOPOUR);
 770         return GO_CLEAROBJ;
 771     }
 772     if (LIQUID() != NO_OBJECT) {
 773         rspeak(BOTTLE_FULL);
 774         return GO_CLEAROBJ;
 775     }
 776     if (LIQLOC(game.loc) == NO_OBJECT) {
 777         rspeak(NO_LIQUID);
 778         return GO_CLEAROBJ;
 779     }
 780
 781     state_change(BOTTLE, (LIQLOC(game.loc) == OIL)
 782                  ? OIL_BOTTLE
 783                  : WATER_BOTTLE);
 784     if (TOTING(BOTTLE))
 785         game.place[LIQUID()] = CARRIED;
 786     return GO_CLEAROBJ;
 787 }
 788
 789 static int find(verb_t verb, obj_t obj)
 790 /* Find.  Might be carrying it, or it might be here.  Else give caveat. */
 791 {
 792     if (TOTING(obj)) {
 793         rspeak(ALREADY_CARRYING);
 794         return GO_CLEAROBJ;
 795     }
 796
 797     if (game.closed) {
 798         rspeak(NEEDED_NEARBY);
 799         return GO_CLEAROBJ;
 800     }
 801
 802     if (AT(obj) ||
 803         (LIQUID() == obj && AT(BOTTLE)) ||
 804         obj == LIQLOC(game.loc) ||
 805         (obj == DWARF && atdwrf(game.loc) > 0)) {
 806         rspeak(YOU_HAVEIT);
 807         return GO_CLEAROBJ;
 808     }
 809
 810
 811     speak(actions[verb].message);
 812     return GO_CLEAROBJ;
 813 }
 814
 815 static int fly(verb_t verb, obj_t obj)
 816 /* Fly.  Snide remarks unless hovering rug is here. */
 817 {
 818     if (obj == INTRANSITIVE) {
 819         if (!HERE(RUG)) {
 820             rspeak(FLAP_ARMS);
 821             return GO_CLEAROBJ;
 822         }
 823         if (game.prop[RUG] != RUG_HOVER) {
 824             rspeak(RUG_NOTHING2);
 825             return GO_CLEAROBJ;
 826         }
 827         obj = RUG;
 828     }
 829
 830     if (obj != RUG) {
 831         speak(actions[verb].message);
 832         return GO_CLEAROBJ;
 833     }
 834     if (game.prop[RUG] != RUG_HOVER) {
 835         rspeak(RUG_NOTHING1);
 836         return GO_CLEAROBJ;
 837     }
 838     game.oldlc2 = game.oldloc;
 839     game.oldloc = game.loc;
 840
 841     if (game.prop[SAPPH] == STATE_NOTFOUND) {
 842         game.newloc = game.place[SAPPH];
 843         rspeak(RUG_GOES);
 844     } else {
 845         game.newloc = LOC_CLIFF;
 846         rspeak(RUG_RETURNS);
 847     }
 848     return GO_TERMINATE;
 849 }
 850
 851 static int inven(void)
 852 /* Inventory. If object, treat same as find.  Else report on current burden. */
 853 {
 854     bool empty = true;
 855     for (obj_t i = 1; i <= NOBJECTS; i++) {
 856         if (i == BEAR ||
 857             !TOTING(i))
 858             continue;
 859         if (empty) {
 860             rspeak(NOW_HOLDING);
 861             empty = false;
 862         }
 863         pspeak(i, touch, -1, false);
 864     }
 865     if (TOTING(BEAR))
 866         rspeak(TAME_BEAR);
 867     if (empty)
 868         rspeak(NO_CARRY);
 869     return GO_CLEAROBJ;
 870 }
 871
 872 static int light(verb_t verb, obj_t obj)
 873 /*  Light.  Applicable only to lamp and urn. */
 874 {
 875     if (obj == INTRANSITIVE) {
 876         int selects = 0;
 877         if (HERE(LAMP) && game.prop[LAMP] == LAMP_DARK && game.limit >= 0) {
 878             obj = LAMP;
 879             selects++;
 880         }
 881         if (HERE(URN) && game.prop[URN] == URN_DARK) {
 882             obj =  URN;
 883             selects++;
 884         }
 885         if (selects != 1)
 886             return GO_UNKNOWN;
 887     }
 888
 889     switch (obj) {
 890     case URN:
 891         state_change(URN, game.prop[URN] == URN_EMPTY ?
 892                      URN_EMPTY :
 893                      URN_LIT);
 894         break;
 895     case LAMP:
 896         if (game.limit < 0) {
 897             rspeak(LAMP_OUT);
 898             break;
 899         }
 900         state_change(LAMP, LAMP_BRIGHT);
 901         if (game.wzdark)
 902             return GO_TOP;
 903         break;
 904     default:
 905         speak(actions[verb].message);
 906     }
 907     return GO_CLEAROBJ;
 908 }
 909
 910 static int listen(void)
 911 /*  Listen.  Intransitive only.  Print stuff based on object sound proprties. */
 912 {
 913     long sound = locations[game.loc].sound;
 914     if (sound != SILENT) {
 915         rspeak(sound);
 916         if (!locations[game.loc].loud)
 917             rspeak(NO_MESSAGE);
 918         return GO_CLEAROBJ;
 919     }
 920     for (obj_t i = 1; i <= NOBJECTS; i++) {
 921         if (!HERE(i) ||
 922             objects[i].sounds[0] == NULL ||
 923             game.prop[i] < 0)
 924             continue;
 925         int mi =  game.prop[i];
 926         /* (ESR) Some unpleasant magic on object states here. Ideally
 927          * we'd have liked the bird to be a normal object that we can
 928          * use state_change() on; can't do it, because there are
 929          * actually two different series of per-state birdsounds
 930          * depending on whether player has drunk dragon's blood. */
 931         if (i == BIRD)
 932             mi += 3 * game.blooded;
 933         long packed_zzword = token_to_packed(game.zzword);
 934         pspeak(i, hear, mi, true, packed_zzword);
 935         rspeak(NO_MESSAGE);
 936         if (i == BIRD && mi == BIRD_ENDSTATE)
 937             DESTROY(BIRD);
 938         return GO_CLEAROBJ;
 939     }
 940     rspeak(ALL_SILENT);
 941     return GO_CLEAROBJ;
 942 }
 943
 944 static int lock(verb_t verb, obj_t obj)
 945 /* Lock, unlock, no object given.  Assume various things if present. */
 946 {
 947     if (obj == INTRANSITIVE) {
 948         if (HERE(CLAM))
 949             obj = CLAM;
 950         if (HERE(OYSTER))
 951             obj = OYSTER;
 952         if (AT(DOOR))
 953             obj = DOOR;
 954         if (AT(GRATE))
 955             obj = GRATE;
 956         if (HERE(CHAIN))
 957             obj = CHAIN;
 958         if (obj == INTRANSITIVE) {
 959             rspeak(NOTHING_LOCKED);
 960             return GO_CLEAROBJ;
 961         }
 962     }
 963
 964     /*  Lock, unlock object.  Special stuff for opening clam/oyster
 965      *  and for chain. */
 966
 967     switch (obj) {
 968     case CHAIN:
 969         if (HERE(KEYS)) {
 970             return chain(verb);
 971         } else
 972             rspeak(NO_KEYS);
 973         break;
 974     case GRATE:
 975         if (HERE(KEYS)) {
 976             if (game.closng) {
 977                 rspeak(EXIT_CLOSED);
 978                 if (!game.panic)
 979                     game.clock2 = PANICTIME;
 980                 game.panic = true;
 981             } else {
 982                 state_change(GRATE, (verb == LOCK) ?
 983                              GRATE_CLOSED :
 984                              GRATE_OPEN);
 985             }
 986         } else
 987             rspeak(NO_KEYS);
 988         break;
 989     case CLAM:
 990         if (verb == LOCK)
 991             rspeak(HUH_MAN);
 992         else if (!TOTING(TRIDENT))
 993             rspeak(CLAM_OPENER);
 994         else {
 995             DESTROY(CLAM);
 996             drop(OYSTER, game.loc);
 997             drop(PEARL, LOC_CULDESAC);
 998             rspeak(PEARL_FALLS);
 999         }
1000         break;
1001     case OYSTER:
1002         if (verb == LOCK)
1003             rspeak(HUH_MAN);
1004         else if (TOTING(OYSTER))
1005             rspeak(DROP_OYSTER);
1006         else if (!TOTING(TRIDENT))
1007             rspeak(OYSTER_OPENER);
1008         else
1009             rspeak(OYSTER_OPENS);
1010         break;
1011     case DOOR:
1012         rspeak((game.prop[DOOR] == DOOR_UNRUSTED) ? OK_MAN : RUSTY_DOOR);
1013         break;
1014     case CAGE:
1015         rspeak( NO_LOCK);
1016         break;
1017     case KEYS:
1018         rspeak(CANNOT_UNLOCK);
1019         break;
1020     default:
1021         speak(actions[verb].message);
1022     }
1023
1024     return GO_CLEAROBJ;
1025 }
1026
1027 static int pour(verb_t verb, obj_t obj)
1028 /*  Pour.  If no object, or object is bottle, assume contents of bottle.
1029  *  special tests for pouring water or oil on plant or rusty door. */
1030 {
1031     if (obj == BOTTLE ||
1032         obj == INTRANSITIVE)
1033         obj = LIQUID();
1034     if (obj == NO_OBJECT)
1035         return GO_UNKNOWN;
1036     if (!TOTING(obj)) {
1037         speak(actions[verb].message);
1038         return GO_CLEAROBJ;
1039     }
1040
1041     if (obj != OIL && obj != WATER) {
1042         rspeak(CANT_POUR);
1043         return GO_CLEAROBJ;
1044     }
1045     if (HERE(URN) && game.prop[URN] == URN_EMPTY)
1046         return fill(verb, URN);
1047     game.prop[BOTTLE] = EMPTY_BOTTLE;
1048     game.place[obj] = LOC_NOWHERE;
1049     if (!(AT(PLANT) ||
1050           AT(DOOR))) {
1051         rspeak(GROUND_WET);
1052         return GO_CLEAROBJ;
1053     }
1054     if (!AT(DOOR)) {
1055         if (obj == WATER) {
1056             /* cycle through the three plant states */
1057             state_change(PLANT, MOD(game.prop[PLANT] + 1, 3));
1058             game.prop[PLANT2] = game.prop[PLANT];
1059             return GO_MOVE;
1060         } else {
1061             rspeak(SHAKING_LEAVES);
1062             return GO_CLEAROBJ;
1063         }
1064     } else {
1065         state_change(DOOR, (obj == OIL) ?
1066                      DOOR_UNRUSTED :
1067                      DOOR_RUSTED);
1068         return GO_CLEAROBJ;
1069     }
1070 }
1071
1072 static int quit(void)
1073 /*  Quit.  Intransitive only.  Verify intent and exit if that's what he wants. */
1074 {
1075     if (yes(arbitrary_messages[REALLY_QUIT], arbitrary_messages[OK_MAN], arbitrary_messages[OK_MAN]))
1076         terminate(quitgame);
1077     return GO_CLEAROBJ;
1078 }
1079
1080 static int read(struct command_t command)
1081 /*  Read.  Print stuff based on objtxt.  Oyster (?) is special case. */
1082 {
1083     if (command.obj == INTRANSITIVE) {
1084         command.obj = NO_OBJECT;
1085         for (int i = 1; i <= NOBJECTS; i++) {
1086             if (HERE(i) && objects[i].texts[0] != NULL && game.prop[i] >= 0)
1087                 command.obj = command.obj * NOBJECTS + i;
1088         }
1089         if (command.obj > NOBJECTS ||
1090             command.obj == NO_OBJECT ||
1091             DARK(game.loc))
1092             return GO_UNKNOWN;
1093     }
1094
1095     if (DARK(game.loc)) {
1096         sspeak(NO_SEE, command.raw1);
1097     } else if (command.obj == OYSTER && !game.clshnt && game.closed) {
1098         game.clshnt = yes(arbitrary_messages[CLUE_QUERY], arbitrary_messages[WAYOUT_CLUE], arbitrary_messages[OK_MAN]);
1099     } else if (objects[command.obj].texts[0] == NULL ||
1100                game.prop[command.obj] == STATE_NOTFOUND) {
1101         speak(actions[command.verb].message);
1102     } else
1103         pspeak(command.obj, study, game.prop[command.obj], true);
1104     return GO_CLEAROBJ;
1105 }
1106
1107 static int reservoir(void)
1108 /*  Z'ZZZ (word gets recomputed at startup; different each game). */
1109 {
1110     if (!AT(RESER) && game.loc != LOC_RESBOTTOM) {
1111         rspeak(NOTHING_HAPPENS);
1112         return GO_CLEAROBJ;
1113     } else {
1114         state_change(RESER,
1115                      game.prop[RESER] == WATERS_PARTED ? WATERS_UNPARTED : WATERS_PARTED);
1116         if (AT(RESER))
1117             return GO_CLEAROBJ;
1118         else {
1119             game.oldlc2 = game.loc;
1120             game.newloc = LOC_NOWHERE;
1121             rspeak(NOT_BRIGHT);
1122             return GO_TERMINATE;
1123         }
1124     }
1125 }
1126
1127 static int rub(verb_t verb, obj_t obj)
1128 /* Rub.  Yields various snide remarks except for lit urn. */
1129 {
1130     if (obj == URN && game.prop[URN] == URN_LIT) {
1131         DESTROY(URN);
1132         drop(AMBER, game.loc);
1133         game.prop[AMBER] = AMBER_IN_ROCK;
1134         --game.tally;
1135         drop(CAVITY, game.loc);
1136         rspeak(URN_GENIES);
1137     } else if (obj != LAMP) {
1138         rspeak(PECULIAR_NOTHING);
1139     } else {
1140         speak(actions[verb].message);
1141     }
1142     return GO_CLEAROBJ;
1143 }
1144
1145 static int say(struct command_t *command)
1146 /* Say.  Echo WD2 (or WD1 if no WD2 (SAY WHAT?, etc.).)  Magic words override. */
1147 {
1148     if (command->wd2 > 0) {
1149         command->wd1 = command->wd2;
1150         strncpy(command->raw1, command->raw2, LINESIZE - 1);
1151     }
1152     char word1[TOKLEN + 1];
1153     packed_to_token(command->wd1, word1);
1154     long wd;
1155     enum wordtype type;
1156     get_vocab_metadata(word1, &wd, &type);
1157     if (wd == XYZZY ||
1158         wd == PLUGH ||
1159         wd == PLOVER ||
1160         wd == FEE ||
1161         wd == FIE ||
1162         wd == FOE ||
1163         wd == FOO ||
1164         wd == FUM ||
1165         wd == PART) {
1166         /* FIXME: scribbles on the interpreter's command block */
1167         wordclear(&command->wd2);
1168         return GO_LOOKUP;
1169     }
1170     sspeak(OKEY_DOKEY, command->raw1);
1171     return GO_CLEAROBJ;
1172 }
1173
1174 static int throw_support(long spk)
1175 {
1176     rspeak(spk);
1177     drop(AXE, game.loc);
1178     return GO_MOVE;
1179 }
1180
1181 static int throw (struct command_t *command)
1182 /*  Throw.  Same as discard unless axe.  Then same as attack except
1183  *  ignore bird, and if dwarf is present then one might be killed.
1184  *  (Only way to do so!)  Axe also special for dragon, bear, and
1185  *  troll.  Treasures special for troll. */
1186 {
1187     if (!TOTING(command->obj)) {
1188         speak(actions[command->verb].message);
1189         return GO_CLEAROBJ;
1190     }
1191     if (objects[command->obj].is_treasure && AT(TROLL)) {
1192         /*  Snarf a treasure for the troll. */
1193         drop(command->obj, LOC_NOWHERE);
1194         move(TROLL, LOC_NOWHERE);
1195         move(TROLL + NOBJECTS, IS_FREE);
1196         drop(TROLL2, objects[TROLL].plac);
1197         drop(TROLL2 + NOBJECTS, objects[TROLL].fixd);
1198         juggle(CHASM);
1199         rspeak(TROLL_SATISFIED);
1200         return GO_CLEAROBJ;
1201     }
1202     if (command->obj == FOOD && HERE(BEAR)) {
1203         /* But throwing food is another story. */
1204         command->obj = BEAR;
1205         return (feed(command->verb, command->obj));
1206     }
1207     if (command->obj != AXE)
1208         return (discard(command->verb, command->obj));
1209     else {
1210         if (atdwrf(game.loc) <= 0) {
1211             if (AT(DRAGON) && game.prop[DRAGON] == DRAGON_BARS)
1212                 return throw_support(DRAGON_SCALES);
1213             if (AT(TROLL))
1214                 return throw_support(TROLL_RETURNS);
1215             if (AT(OGRE))
1216                 return throw_support(OGRE_DODGE);
1217             if (HERE(BEAR) && game.prop[BEAR] == UNTAMED_BEAR) {
1218                 /* This'll teach him to throw the axe at the bear! */
1219                 drop(AXE, game.loc);
1220                 game.fixed[AXE] = IS_FIXED;
1221                 juggle(BEAR);
1222                 state_change(AXE, AXE_LOST);
1223                 return GO_CLEAROBJ;
1224             }
1225             command->obj = INTRANSITIVE;
1226             return (attack(command));
1227         }
1228
1229         if (randrange(NDWARVES + 1) < game.dflag) {
1230             return throw_support(DWARF_DODGES);
1231         } else {
1232             long i = atdwrf(game.loc);
1233             game.dseen[i] = false;
1234             game.dloc[i] = LOC_NOWHERE;
1235             return throw_support((++game.dkill == 1) ?
1236                                  DWARF_SMOKE :
1237                                  KILLED_DWARF);
1238         }
1239     }
1240 }
1241
1242 static int wake(verb_t verb, obj_t obj)
1243 /* Wake.  Only use is to disturb the dwarves. */
1244 {
1245     if (obj != DWARF ||
1246         !game.closed) {
1247         speak(actions[verb].message);
1248         return GO_CLEAROBJ;
1249     } else {
1250         rspeak(PROD_DWARF);
1251         return GO_DWARFWAKE;
1252     }
1253 }
1254
1255 static int wave(verb_t verb, obj_t obj)
1256 /* Wave.  No effect unless waving rod at fissure or at bird. */
1257 {
1258     if (obj != ROD ||
1259         !TOTING(obj) ||
1260         (!HERE(BIRD) &&
1261          (game.closng ||
1262           !AT(FISSURE)))) {
1263         speak(((!TOTING(obj)) && (obj != ROD ||
1264                                   !TOTING(ROD2))) ?
1265               arbitrary_messages[ARENT_CARRYING] :
1266               actions[verb].message);
1267         return GO_CLEAROBJ;
1268     }
1269
1270     if (game.prop[BIRD] == BIRD_UNCAGED && game.loc == game.place[STEPS] && game.prop[JADE] == STATE_NOTFOUND) {
1271         drop(JADE, game.loc);
1272         game.prop[JADE] = STATE_FOUND;
1273         --game.tally;
1274         rspeak(NECKLACE_FLY);
1275         return GO_CLEAROBJ;
1276     } else {
1277         if (game.closed) {
1278             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1279                    CAGE_FLY :
1280                    FREE_FLY);
1281             return GO_DWARFWAKE;
1282         }
1283         if (game.closng ||
1284             !AT(FISSURE)) {
1285             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1286                    CAGE_FLY :
1287                    FREE_FLY);
1288             return GO_CLEAROBJ;
1289         }
1290         if (HERE(BIRD))
1291             rspeak((game.prop[BIRD] == BIRD_CAGED) ?
1292                    CAGE_FLY :
1293                    FREE_FLY);
1294
1295         state_change(FISSURE,
1296                      game.prop[FISSURE] == BRIDGED ? UNBRIDGED : BRIDGED);
1297         return GO_CLEAROBJ;
1298     }
1299 }
1300
1301 int action(struct command_t *command)
1302 /*  Analyse a verb.  Remember what it was, go back for object if second word
1303  *  unless verb is "say", which snarfs arbitrary second word.
1304  */
1305 {
1306     if (command->part == unknown) {
1307         /*  Analyse an object word.  See if the thing is here, whether
1308          *  we've got a verb yet, and so on.  Object must be here
1309          *  unless verb is "find" or "invent(ory)" (and no new verb
1310          *  yet to be analysed).  Water and oil are also funny, since
1311          *  they are never actually dropped at any location, but might
1312          *  be here inside the bottle or urn or as a feature of the
1313          *  location. */
1314         if (HERE(command->obj))
1315             /* FALL THROUGH */;
1316         else if (command->obj == GRATE) {
1317             if (game.loc == LOC_START ||
1318                 game.loc == LOC_VALLEY ||
1319                 game.loc == LOC_SLIT) {
1320                 command->obj = DPRSSN;
1321             }
1322             if (game.loc == LOC_COBBLE ||
1323                 game.loc == LOC_DEBRIS ||
1324                 game.loc == LOC_AWKWARD ||
1325                 game.loc == LOC_BIRD ||
1326                 game.loc == LOC_PITTOP) {
1327                 command->obj = ENTRNC;
1328             }
1329         } else if (command->obj == DWARF && atdwrf(game.loc) > 0)
1330             /* FALL THROUGH */;
1331         else if ((LIQUID() == command->obj && HERE(BOTTLE)) ||
1332                  command->obj == LIQLOC(game.loc))
1333             /* FALL THROUGH */;
1334         else if (command->obj == OIL && HERE(URN) && game.prop[URN] != URN_EMPTY) {
1335             command->obj = URN;
1336             /* FALL THROUGH */;
1337         } else if (command->obj == PLANT && AT(PLANT2) && game.prop[PLANT2] != PLANT_THIRSTY) {
1338             command->obj = PLANT2;
1339             /* FALL THROUGH */;
1340         } else if (command->obj == KNIFE && game.knfloc == game.loc) {
1341             game.knfloc = -1;
1342             rspeak(KNIVES_VANISH);
1343             return GO_CLEAROBJ;
1344         } else if (command->obj == ROD && HERE(ROD2)) {
1345             command->obj = ROD2;
1346             /* FALL THROUGH */;
1347         } else if ((command->verb == FIND ||
1348                     command->verb == INVENTORY) && (command->id2 == WORD_EMPTY || command->id2 == WORD_NOT_FOUND))
1349             /* FALL THROUGH */;
1350         else {
1351             sspeak(NO_SEE, command->raw1);
1352             return GO_CLEAROBJ;
1353         }
1354
1355         if (command->id2 != WORD_EMPTY && command->id2 != WORD_NOT_FOUND)
1356             return GO_WORD2;
1357         if (command->verb != 0)
1358             command->part = transitive;
1359     }
1360
1361     switch (command->part) {
1362     case intransitive:
1363         if (command->wd2 > 0 && command->verb != SAY)
1364             return GO_WORD2;
1365         if (command->verb == SAY)
1366             command->obj = command->wd2;
1367         if (command->obj == NO_OBJECT ||
1368             command->obj == INTRANSITIVE) {
1369             /*  Analyse an intransitive verb (ie, no object given yet). */
1370             switch (command->verb) {
1371             case CARRY:
1372                 return vcarry(command->verb, INTRANSITIVE);
1373             case  DROP:
1374                 return GO_UNKNOWN;
1375             case  SAY:
1376                 return GO_UNKNOWN;
1377             case  UNLOCK:
1378                 return lock(command->verb, INTRANSITIVE);
1379             case  NOTHING: {
1380                 rspeak(OK_MAN);
1381                 return (GO_CLEAROBJ);
1382             }
1383             case  LOCK:
1384                 return lock(command->verb, INTRANSITIVE);
1385             case  LIGHT:
1386                 return light(command->verb, INTRANSITIVE);
1387             case  EXTINGUISH:
1388                 return extinguish(command->verb, INTRANSITIVE);
1389             case  WAVE:
1390                 return GO_UNKNOWN;
1391             case  TAME:
1392                 return GO_UNKNOWN;
1393             case GO: {
1394                 speak(actions[command->verb].message);
1395                 return GO_CLEAROBJ;
1396             }
1397             case ATTACK:
1398                 command->obj = INTRANSITIVE;
1399                 return attack(command);
1400             case POUR:
1401                 return pour(command->verb, INTRANSITIVE);
1402             case EAT:
1403                 return eat(command->verb, INTRANSITIVE);
1404             case DRINK:
1405                 return drink(command->verb, INTRANSITIVE);
1406             case RUB:
1407                 return GO_UNKNOWN;
1408             case THROW:
1409                 return GO_UNKNOWN;
1410             case QUIT:
1411                 return quit();
1412             case FIND:
1413                 return GO_UNKNOWN;
1414             case INVENTORY:
1415                 return inven();
1416             case FEED:
1417                 return GO_UNKNOWN;
1418             case FILL:
1419                 return fill(command->verb, INTRANSITIVE);
1420             case BLAST:
1421                 blast();
1422                 return GO_CLEAROBJ;
1423             case SCORE:
1424                 score(scoregame);
1425                 return GO_CLEAROBJ;
1426             case FEE:
1427             case FIE:
1428             case FOE:
1429             case FOO:
1430             case FUM:
1431                 return bigwords(command->id1);
1432             case BRIEF:
1433                 return brief();
1434             case READ:
1435                 command->obj = INTRANSITIVE;
1436                 return read(*command);
1437             case BREAK:
1438                 return GO_UNKNOWN;
1439             case WAKE:
1440                 return GO_UNKNOWN;
1441             case SAVE:
1442                 return suspend();
1443             case RESUME:
1444                 return resume();
1445             case FLY:
1446                 return fly(command->verb, INTRANSITIVE);
1447             case LISTEN:
1448                 return listen();
1449             case PART:
1450                 return reservoir();
1451             default:
1452                 BUG(INTRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1453             }
1454         }
1455     /* FALLTHRU */
1456     case transitive:
1457         /*  Analyse a transitive verb. */
1458         switch (command->verb) {
1459         case  CARRY:
1460             return vcarry(command->verb, command->obj);
1461         case  DROP:
1462             return discard(command->verb, command->obj);
1463         case  SAY:
1464             return say(command);
1465         case  UNLOCK:
1466             return lock(command->verb, command->obj);
1467         case  NOTHING: {
1468             rspeak(OK_MAN);
1469             return (GO_CLEAROBJ);
1470         }
1471         case  LOCK:
1472             return lock(command->verb, command->obj);
1473         case LIGHT:
1474             return light(command->verb, command->obj);
1475         case EXTINGUISH:
1476             return extinguish(command->verb, command->obj);
1477         case WAVE:
1478             return wave(command->verb, command->obj);
1479         case TAME: {
1480             speak(actions[command->verb].message);
1481             return GO_CLEAROBJ;
1482         }
1483         case GO: {
1484             speak(actions[command->verb].message);
1485             return GO_CLEAROBJ;
1486         }
1487         case ATTACK:
1488             return attack(command);
1489         case POUR:
1490             return pour(command->verb, command->obj);
1491         case EAT:
1492             return eat(command->verb, command->obj);
1493         case DRINK:
1494             return drink(command->verb, command->obj);
1495         case RUB:
1496             return rub(command->verb, command->obj);
1497         case THROW:
1498             return throw (command);
1499         case QUIT: {
1500             speak(actions[command->verb].message);
1501             return GO_CLEAROBJ;
1502         }
1503         case FIND:
1504             return find(command->verb, command->obj);
1505         case INVENTORY:
1506             return find(command->verb, command->obj);
1507         case FEED:
1508             return feed(command->verb, command->obj);
1509         case FILL:
1510             return fill(command->verb, command->obj);
1511         case BLAST:
1512             blast();
1513             return GO_CLEAROBJ;
1514         case SCORE: {
1515             speak(actions[command->verb].message);
1516             return GO_CLEAROBJ;
1517         }
1518         case FEE:
1519         case FIE:
1520         case FOE:
1521         case FOO:
1522         case FUM: {
1523             speak(actions[command->verb].message);
1524             return GO_CLEAROBJ;
1525         }
1526         case BRIEF: {
1527             speak(actions[command->verb].message);
1528             return GO_CLEAROBJ;
1529         }
1530         case READ:
1531             return read(*command);
1532         case BREAK:
1533             return vbreak(command->verb, command->obj);
1534         case WAKE:
1535             return wake(command->verb, command->obj);
1536         case SAVE: {
1537             speak(actions[command->verb].message);
1538             return GO_CLEAROBJ;
1539         }
1540         case RESUME: {
1541             speak(actions[command->verb].message);
1542             return GO_CLEAROBJ;
1543         }
1544         case FLY:
1545             return fly(command->verb, command->obj);
1546         case LISTEN: {
1547             speak(actions[command->verb].message);
1548             return GO_CLEAROBJ;
1549         }
1550         case PART:
1551             return reservoir();
1552         default:
1553             BUG(TRANSITIVE_ACTION_VERB_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
1554         }
1555     case unknown:
1556         /* Unknown verb, couldn't deduce object - might need hint */
1557         sspeak(WHAT_DO, command->raw1);
1558         return GO_CHECKHINT;
1559     default:
1560         BUG(SPEECHPART_NOT_TRANSITIVE_OR_INTRANSITIVE_OR_UNKNOWN); // LCOV_EXCL_LINE
1561     }
1562 }