Source:NetHack 3.6.0/src/do.c

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 /* NetHack 3.6	do.c	$NHDT-Date: 1446975464 2015/11/08 09:37:44 $  $NHDT-Branch: master $:$NHDT-Revision: 1.149 $ */

 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */

 /* NetHack may be freely redistributed.  See license for details. */

```
 
```

 /* Contains code for 'd', 'D' (drop), '>', '<' (up, down) */

```
 
```
```
 #include "hack.h"
```
```
 #include "lev.h"
```
```
 
```

 STATIC_DCL void FDECL(trycall, (struct obj *));

 STATIC_DCL void NDECL(polymorph_sink);

 STATIC_DCL boolean NDECL(teleport_sink);

 STATIC_DCL void FDECL(dosinkring, (struct obj *));

 STATIC_PTR int FDECL(drop, (struct obj *));

```
 STATIC_PTR int NDECL(wipeoff);
```

 STATIC_DCL int FDECL(menu_drop, (int));

 STATIC_DCL int NDECL(currentlevel_rewrite);

```
 STATIC_DCL void NDECL(final_level);
```

 /* static boolean FDECL(badspot, (XCHAR_P,XCHAR_P)); */

```
 
```

 extern int n_dgns; /* number of dungeons, from dungeon.c */

```
 
```

 static NEARDATA const char drop_types[] = { ALLOW_COUNT, COIN_CLASS,

                                             ALL_CLASSES, 0 };

```
 
```

dodrop

 /* 'd' command: drop one inventory item */

```
 int
```
```
 dodrop()
```
```
 {
```

     int result, i = (invent) ? 0 : (SIZE(drop_types) - 1);

```
 
```
```
     if (*u.ushops)
```

         sellobj_state(SELL_DELIBERATE);

     result = drop(getobj(&drop_types[i], "drop"));

```
     if (*u.ushops)
```
```
         sellobj_state(SELL_NORMAL);
```
```
     reset_occupations();
```
```
 
```
```
     return result;
```
```
 }
```
```
 
```

boulder_hits_pool

 /* Called when a boulder is dropped, thrown, or pushed.  If it ends up

  * in a pool, it either fills the pool up or sinks away.  In either case,

  * it's gone for good...  If the destination is not a pool, returns FALSE.

```
  */
```
```
 boolean
```

 boulder_hits_pool(otmp, rx, ry, pushing)

```
 struct obj *otmp;
```
```
 register int rx, ry;
```
```
 boolean pushing;
```
```
 {
```

     if (!otmp || otmp->otyp != BOULDER) {

```
         impossible("Not a boulder?");
```

     } else if (!Is_waterlevel(&u.uz) && is_pool_or_lava(rx, ry)) {

         boolean lava = is_lava(rx, ry), fills_up;

         const char *what = waterbody_name(rx, ry);

         schar ltyp = levl[rx][ry].typ;

         int chance = rn2(10); /* water: 90%; lava: 10% */

         fills_up = lava ? chance == 0 : chance != 0;

```
 
```
```
         if (fills_up) {
```

             struct trap *ttmp = t_at(rx, ry);

```
 
```

             if (ltyp == DRAWBRIDGE_UP) {

                 levl[rx][ry].drawbridgemask &= ~DB_UNDER; /* clear lava */

                 levl[rx][ry].drawbridgemask |= DB_FLOOR;

```
             } else
```

                 levl[rx][ry].typ = ROOM;

```
 
```
```
             if (ttmp)
```

                 (void) delfloortrap(ttmp);

```
             bury_objs(rx, ry);
```
```
 
```
```
             newsym(rx, ry);
```
```
             if (pushing) {
```
```
                 char whobuf[BUFSZ];
```
```
 
```

                 Strcpy(whobuf, "you");

```
                 if (u.usteed)
```

                     Strcpy(whobuf, y_monnam(u.usteed));

                 pline("%s %s %s into the %s.", upstart(whobuf),

                       vtense(whobuf, "push"), the(xname(otmp)), what);

                 if (flags.verbose && !Blind)

                     pline("Now you can cross it!");

                 /* no splashing in this case */

```
             }
```
```
         }
```

         if (!fills_up || !pushing) { /* splashing occurs */

```
             if (!u.uinwater) {
```

                 if (pushing ? !Blind : cansee(rx, ry)) {

                     There("is a large splash as %s %s the %s.",

                           the(xname(otmp)), fills_up ? "fills" : "falls into",

```
                           what);
```
```
                 } else if (!Deaf)
```

                     You_hear("a%s splash.", lava ? " sizzling" : "");

                 wake_nearto(rx, ry, 40);

```
             }
```
```
 
```

             if (fills_up && u.uinwater && distu(rx, ry) == 0) {

```
                 u.uinwater = 0;
```
```
                 docrt();
```

                 vision_full_recalc = 1;

                 You("find yourself on dry land again!");

             } else if (lava && distu(rx, ry) <= 2) {

```
                 int dmg;
```

                 You("are hit by molten lava%c", Fire_resistance ? '.' : '!');

```
                 burn_away_slime();
```

                 dmg = d((Fire_resistance ? 1 : 3), 6);

                 losehp(Maybe_Half_Phys(dmg), /* lava damage */

                        "molten lava", KILLED_BY);

             } else if (!fills_up && flags.verbose

                        && (pushing ? !Blind : cansee(rx, ry)))

                 pline("It sinks without a trace!");

```
         }
```
```
 
```
```
         /* boulder is now gone */
```
```
         if (pushing)
```
```
             delobj(otmp);
```
```
         else
```

             obfree(otmp, (struct obj *) 0);

```
         return TRUE;
```
```
     }
```
```
     return FALSE;
```
```
 }
```
```
 
```

flooreffects

 /* Used for objects which sometimes do special things when dropped; must be

  * called with the object not in any chain.  Returns TRUE if the object goes

```
  * away.
```
```
  */
```
```
 boolean
```
```
 flooreffects(obj, x, y, verb)
```
```
 struct obj *obj;
```
```
 int x, y;
```
```
 const char *verb;
```
```
 {
```
```
     struct trap *t;
```
```
     struct monst *mtmp;
```
```
     struct obj *otmp;
```
```
 
```
```
     if (obj->where != OBJ_FREE)
```

         panic("flooreffects: obj not free");

```
 
```

     /* make sure things like water_damage() have no pointers to follow */

     obj->nobj = obj->nexthere = (struct obj *) 0;

```
 
```

     if (obj->otyp == BOULDER && boulder_hits_pool(obj, x, y, FALSE)) {

```
         return TRUE;
```

     } else if (obj->otyp == BOULDER && (t = t_at(x, y)) != 0

              && (t->ttyp == PIT || t->ttyp == SPIKED_PIT

                  || t->ttyp == TRAPDOOR || t->ttyp == HOLE)) {

         if (((mtmp = m_at(x, y)) && mtmp->mtrapped)

             || (u.utrap && u.ux == x && u.uy == y)) {

```
             if (*verb)
```

                 pline_The("boulder %s into the pit%s.",

                           vtense((const char *) 0, verb),

                           (mtmp) ? "" : " with you");

```
             if (mtmp) {
```

                 if (!passes_walls(mtmp->data) && !throws_rocks(mtmp->data)) {

                     if (hmon(mtmp, obj, TRUE) && !is_whirly(mtmp->data))

                         return FALSE; /* still alive */

```
                 }
```
```
                 mtmp->mtrapped = 0;
```
```
             } else {
```

                 if (!Passes_walls && !throws_rocks(youmonst.data)) {

                     losehp(Maybe_Half_Phys(rnd(15)),

                            "squished under a boulder", NO_KILLER_PREFIX);

                     return FALSE; /* player remains trapped */

```
                 } else
```
```
                     u.utrap = 0;
```
```
             }
```
```
         }
```
```
         if (*verb) {
```

             if (Blind && (x == u.ux) && (y == u.uy)) {

                 You_hear("a CRASH! beneath you.");

             } else if (!Blind && cansee(x, y)) {

                 pline_The("boulder %s%s.", t->tseen ? "" : "triggers and ",

                           t->ttyp == TRAPDOOR

                               ? "plugs a trap door"

                               : t->ttyp == HOLE ? "plugs a hole"

                                                 : "fills a pit");

```
             } else {
```

                 You_hear("a boulder %s.", verb);

```
             }
```
```
         }
```
```
         deltrap(t);
```
```
         useupf(obj, 1L);
```
```
         bury_objs(x, y);
```
```
         newsym(x, y);
```
```
         return TRUE;
```
```
     } else if (is_lava(x, y)) {
```

         return fire_damage(obj, FALSE, x, y);

```
     } else if (is_pool(x, y)) {
```

         /* Reasonably bulky objects (arbitrary) splash when dropped.

          * If you're floating above the water even small things make

          * noise.  Stuff dropped near fountains always misses */

         if ((Blind || (Levitation || Flying)) && !Deaf

             && ((x == u.ux) && (y == u.uy))) {

```
             if (!Underwater) {
```

                 if (weight(obj) > 9) {

```
                     pline("Splash!");
```

                 } else if (Levitation || Flying) {

```
                     pline("Plop!");
```
```
                 }
```
```
             }
```
```
             map_background(x, y, 0);
```
```
             newsym(x, y);
```
```
         }
```

         return water_damage(obj, NULL, FALSE) == ER_DESTROYED;

     } else if (u.ux == x && u.uy == y && (t = t_at(x, y)) != 0

                && uteetering_at_seen_pit(t)) {

```
         if (Blind && !Deaf)
```

             You_hear("%s tumble downwards.", the(xname(obj)));

```
         else
```

             pline("%s %s into %s pit.", The(xname(obj)),

                   otense(obj, "tumble"), the_your[t->madeby_u]);

```
     } else if (obj->globby) {
```

         /* Globby things like puddings might stick together */

```
         while (obj
```

                && (otmp = obj_nexto_xy(obj->otyp, x, y, obj->o_id))

                       != (struct obj *) 0) {

             pudding_merge_message(obj, otmp);

             /* intentionally not getting the melded object; obj_meld may set

```
              * obj to null. */
```

             (void) obj_meld(&obj, &otmp);

```
         }
```

         return (boolean) (obj == NULL);

```
     }
```
```
     return FALSE;
```
```
 }
```
```
 
```

doaltarobj

 /* obj is an object dropped on an altar */

```
 void
```
```
 doaltarobj(obj)
```
```
 register struct obj *obj;
```
```
 {
```
```
     if (Blind)
```
```
         return;
```
```
 
```
```
     if (obj->oclass != COIN_CLASS) {
```
```
         /* KMH, conduct */
```
```
         u.uconduct.gnostic++;
```
```
     } else {
```

         /* coins don't have bless/curse status */

         obj->blessed = obj->cursed = 0;

```
     }
```
```
 
```

     if (obj->blessed || obj->cursed) {

         There("is %s flash as %s %s the altar.",

               an(hcolor(obj->blessed ? NH_AMBER : NH_BLACK)), doname(obj),

```
               otense(obj, "hit"));
```
```
         if (!Hallucination)
```
```
             obj->bknown = 1;
```
```
     } else {
```

         pline("%s %s on the altar.", Doname2(obj), otense(obj, "land"));

         if (obj->oclass != COIN_CLASS)

```
             obj->bknown = 1;
```
```
     }
```
```
 }
```
```
 
```

trycall

```
 STATIC_OVL void
```
```
 trycall(obj)
```
```
 register struct obj *obj;
```
```
 {
```

     if (!objects[obj->otyp].oc_name_known && !objects[obj->otyp].oc_uname)

```
         docall(obj);
```
```
 }
```
```
 
```

polymorph_sink

 /* Transforms the sink at the player's position into

    a fountain, throne, altar or grave. */

```
 STATIC_DCL void
```
```
 polymorph_sink()
```
```
 {
```
```
     if (levl[u.ux][u.uy].typ != SINK)
```
```
         return;
```
```
 
```
```
     level.flags.nsinks--;
```
```
     levl[u.ux][u.uy].doormask = 0;
```
```
     switch (rn2(4)) {
```
```
     default:
```
```
     case 0:
```

         levl[u.ux][u.uy].typ = FOUNTAIN;

```
         level.flags.nfountains++;
```
```
         break;
```
```
     case 1:
```

         levl[u.ux][u.uy].typ = THRONE;

```
         break;
```
```
     case 2:
```
```
         levl[u.ux][u.uy].typ = ALTAR;
```

         levl[u.ux][u.uy].altarmask = Align2amask(rn2((int) A_LAWFUL + 2) - 1);

```
         break;
```
```
     case 3:
```
```
         levl[u.ux][u.uy].typ = ROOM;
```

         make_grave(u.ux, u.uy, (char *) 0);

```
         break;
```
```
     }
```

     pline_The("sink transforms into %s!", (levl[u.ux][u.uy].typ == THRONE)

                                               ? "a throne"

                                               : an(surface(u.ux, u.uy)));

```
     newsym(u.ux, u.uy);
```
```
 }
```
```
 
```

teleport_sink

 /* Teleports the sink at the player's position;

```
    return True if sink teleported. */
```
```
 STATIC_DCL boolean
```
```
 teleport_sink()
```
```
 {
```
```
     int cx, cy;
```
```
     int cnt = 0;
```
```
     struct trap *trp;
```
```
     struct engr *eng;
```
```
 
```
```
     do {
```
```
         cx = rnd(COLNO - 1);
```
```
         cy = rn2(ROWNO);
```
```
         trp = t_at(cx, cy);
```
```
         eng = engr_at(cx, cy);
```

     } while ((levl[cx][cy].typ != ROOM || trp || eng || cansee(cx, cy))

```
              && cnt++ < 200);
```
```
 
```

     if (levl[cx][cy].typ == ROOM && !trp && !eng) {

         /* create sink at new position */

```
         levl[cx][cy].typ = SINK;
```

         levl[cx][cy].looted = levl[u.ux][u.uy].looted;

```
         newsym(cx, cy);
```
```
         /* remove old sink */
```
```
         levl[u.ux][u.uy].typ = ROOM;
```
```
         levl[u.ux][u.uy].looted = 0;
```
```
         newsym(u.ux, u.uy);
```
```
         return TRUE;
```
```
     }
```
```
     return FALSE;
```
```
 }
```
```
 
```

dosinkring

 /* obj is a ring being dropped over a kitchen sink */

```
 STATIC_OVL void
```
```
 dosinkring(obj)
```
```
 register struct obj *obj;
```
```
 {
```
```
     struct obj *otmp, *otmp2;
```
```
     boolean ideed = TRUE;
```
```
     boolean nosink = FALSE;
```
```
 
```

     You("drop %s down the drain.", doname(obj));

     obj->in_use = TRUE;  /* block free identification via interrupt */

     switch (obj->otyp) { /* effects that can be noticed without eyes */

```
     case RIN_SEARCHING:
```

         You("thought %s got lost in the sink, but there it is!", yname(obj));

```
         goto giveback;
```
```
     case RIN_SLOW_DIGESTION:
```

         pline_The("ring is regurgitated!");

```
     giveback:
```
```
         obj->in_use = FALSE;
```
```
         dropx(obj);
```
```
         trycall(obj);
```
```
         return;
```
```
     case RIN_LEVITATION:
```

         pline_The("sink quivers upward for a moment.");

```
         break;
```
```
     case RIN_POISON_RESISTANCE:
```

         You("smell rotten %s.", makeplural(fruitname(FALSE)));

```
         break;
```
```
     case RIN_AGGRAVATE_MONSTER:
```

         pline("Several %s buzz angrily around the sink.",

               Hallucination ? makeplural(rndmonnam(NULL)) : "flies");

```
         break;
```
```
     case RIN_SHOCK_RESISTANCE:
```

         pline("Static electricity surrounds the sink.");

```
         break;
```
```
     case RIN_CONFLICT:
```

         You_hear("loud noises coming from the drain.");

```
         break;
```

     case RIN_SUSTAIN_ABILITY: /* KMH */

         pline_The("water flow seems fixed.");

```
         break;
```
```
     case RIN_GAIN_STRENGTH:
```

         pline_The("water flow seems %ser now.",

                   (obj->spe < 0) ? "weak" : "strong");

```
         break;
```
```
     case RIN_GAIN_CONSTITUTION:
```

         pline_The("water flow seems %ser now.",

                   (obj->spe < 0) ? "less" : "great");

```
         break;
```

     case RIN_INCREASE_ACCURACY: /* KMH */

         pline_The("water flow %s the drain.",

                   (obj->spe < 0) ? "misses" : "hits");

```
         break;
```
```
     case RIN_INCREASE_DAMAGE:
```

         pline_The("water's force seems %ser now.",

                   (obj->spe < 0) ? "small" : "great");

```
         break;
```
```
     case RIN_HUNGER:
```
```
         ideed = FALSE;
```

         for (otmp = level.objects[u.ux][u.uy]; otmp; otmp = otmp2) {

```
             otmp2 = otmp->nexthere;
```

             if (otmp != uball && otmp != uchain

                 && !obj_resists(otmp, 1, 99)) {

```
                 if (!Blind) {
```

                     pline("Suddenly, %s %s from the sink!", doname(otmp),

                           otense(otmp, "vanish"));

```
                     ideed = TRUE;
```
```
                 }
```
```
                 delobj(otmp);
```
```
             }
```
```
         }
```
```
         break;
```
```
     case MEAT_RING:
```

         /* Not the same as aggravate monster; besides, it's obvious. */

         pline("Several flies buzz around the sink.");

```
         break;
```
```
     default:
```
```
         ideed = FALSE;
```
```
         break;
```
```
     }
```

     if (!Blind && !ideed && obj->otyp != RIN_HUNGER) {

```
         ideed = TRUE;
```

         switch (obj->otyp) { /* effects that need eyes */

```
         case RIN_ADORNMENT:
```

             pline_The("faucets flash brightly for a moment.");

```
             break;
```
```
         case RIN_REGENERATION:
```

             pline_The("sink looks as good as new.");

```
             break;
```
```
         case RIN_INVISIBILITY:
```

             You("don't see anything happen to the sink.");

```
             break;
```
```
         case RIN_FREE_ACTION:
```

             You_see("the ring slide right down the drain!");

```
             break;
```
```
         case RIN_SEE_INVISIBLE:
```

             You_see("some %s in the sink.",

                     Hallucination ? "oxygen molecules" : "air");

```
             break;
```
```
         case RIN_STEALTH:
```

             pline_The("sink seems to blend into the floor for a moment.");

```
             break;
```
```
         case RIN_FIRE_RESISTANCE:
```

             pline_The("hot water faucet flashes brightly for a moment.");

```
             break;
```
```
         case RIN_COLD_RESISTANCE:
```

             pline_The("cold water faucet flashes brightly for a moment.");

```
             break;
```

         case RIN_PROTECTION_FROM_SHAPE_CHAN:

             pline_The("sink looks nothing like a fountain.");

```
             break;
```
```
         case RIN_PROTECTION:
```

             pline_The("sink glows %s for a moment.",

                       hcolor((obj->spe < 0) ? NH_BLACK : NH_SILVER));

```
             break;
```
```
         case RIN_WARNING:
```

             pline_The("sink glows %s for a moment.", hcolor(NH_WHITE));

```
             break;
```
```
         case RIN_TELEPORTATION:
```
```
             nosink = teleport_sink();
```

             pline_The("sink %svanishes.", nosink ? "" : "momentarily ");

```
             break;
```
```
         case RIN_TELEPORT_CONTROL:
```

             pline_The("sink looks like it is being beamed aboard somewhere.");

```
             break;
```
```
         case RIN_POLYMORPH:
```
```
             polymorph_sink();
```
```
             nosink = TRUE;
```
```
             break;
```
```
         case RIN_POLYMORPH_CONTROL:
```
```
             pline_The(
```

                 "sink momentarily looks like a regularly erupting geyser.");

```
             break;
```
```
         }
```
```
     }
```
```
     if (ideed)
```
```
         trycall(obj);
```
```
     else if (!nosink)
```

         You_hear("the ring bouncing down the drainpipe.");

```
 
```
```
     if (!rn2(20) && !nosink) {
```

         pline_The("sink backs up, leaving %s.", doname(obj));

```
         obj->in_use = FALSE;
```
```
         dropx(obj);
```
```
     } else
```
```
         useup(obj);
```
```
 }
```
```
 
```

canletgo

 /* some common tests when trying to drop or throw items */

```
 boolean
```
```
 canletgo(obj, word)
```
```
 struct obj *obj;
```
```
 const char *word;
```
```
 {
```

     if (obj->owornmask & (W_ARMOR | W_ACCESSORY)) {

```
         if (*word)
```

             Norep("You cannot %s %s you are wearing.", word, something);

```
         return FALSE;
```
```
     }
```

     if (obj->otyp == LOADSTONE && obj->cursed) {

         /* getobj() kludge sets corpsenm to user's specified count

            when refusing to split a stack of cursed loadstones */

```
         if (*word) {
```

             /* getobj() ignores a count for throwing since that is

                implicitly forced to be 1; replicate its kludge... */

             if (!strcmp(word, "throw") && obj->quan > 1L)

```
                 obj->corpsenm = 1;
```

             pline("For some reason, you cannot %s%s the stone%s!", word,

                   obj->corpsenm ? " any of" : "", plur(obj->quan));

```
         }
```

         obj->corpsenm = 0; /* reset */

```
         obj->bknown = 1;
```
```
         return FALSE;
```
```
     }
```

     if (obj->otyp == LEASH && obj->leashmon != 0) {

```
         if (*word)
```

             pline_The("leash is tied around your %s.", body_part(HAND));

```
         return FALSE;
```
```
     }
```
```
     if (obj->owornmask & W_SADDLE) {
```
```
         if (*word)
```

             You("cannot %s %s you are sitting on.", word, something);

```
         return FALSE;
```
```
     }
```
```
     return TRUE;
```
```
 }
```
```
 
```

drop

```
 STATIC_PTR int
```
```
 drop(obj)
```
```
 register struct obj *obj;
```
```
 {
```
```
     if (!obj)
```
```
         return 0;
```
```
     if (!canletgo(obj, "drop"))
```
```
         return 0;
```
```
     if (obj == uwep) {
```
```
         if (welded(uwep)) {
```
```
             weldmsg(obj);
```
```
             return 0;
```
```
         }
```
```
         setuwep((struct obj *) 0);
```
```
     }
```
```
     if (obj == uquiver) {
```
```
         setuqwep((struct obj *) 0);
```
```
     }
```
```
     if (obj == uswapwep) {
```

         setuswapwep((struct obj *) 0);

```
     }
```
```
 
```
```
     if (u.uswallow) {
```

         /* barrier between you and the floor */

```
         if (flags.verbose) {
```
```
             char buf[BUFSZ];
```
```
 
```

             /* doname can call s_suffix, reusing its buffer */

             Strcpy(buf, s_suffix(mon_nam(u.ustuck)));

             You("drop %s into %s %s.", doname(obj), buf,

                 mbodypart(u.ustuck, STOMACH));

```
         }
```
```
     } else {
```

         if ((obj->oclass == RING_CLASS || obj->otyp == MEAT_RING)

             && IS_SINK(levl[u.ux][u.uy].typ)) {

```
             dosinkring(obj);
```
```
             return 1;
```
```
         }
```
```
         if (!can_reach_floor(TRUE)) {
```

             /* we might be levitating due to #invoke Heart of Ahriman;

                if so, levitation would end during call to freeinv()

                and we want hitfloor() to happen before float_down() */

             boolean levhack = finesse_ahriman(obj);

```
 
```
```
             if (levhack)
```

                 ELevitation = W_ART; /* other than W_ARTI */

```
             if (flags.verbose)
```

                 You("drop %s.", doname(obj));

             /* Ensure update when we drop gold objects */

             if (obj->oclass == COIN_CLASS)

```
                 context.botl = 1;
```
```
             freeinv(obj);
```
```
             hitfloor(obj);
```
```
             if (levhack)
```

                 float_down(I_SPECIAL | TIMEOUT, W_ARTI | W_ART);

```
             return 1;
```
```
         }
```

         if (!IS_ALTAR(levl[u.ux][u.uy].typ) && flags.verbose)

             You("drop %s.", doname(obj));

```
     }
```
```
     dropx(obj);
```
```
     return 1;
```
```
 }
```
```
 
```

dropx

 /* dropx - take dropped item out of inventory;

    called in several places - may produce output

    (eg ship_object() and dropy() -> sellobj() both produce output) */

```
 void
```
```
 dropx(obj)
```
```
 register struct obj *obj;
```
```
 {
```

     /* Ensure update when we drop gold objects */

```
     if (obj->oclass == COIN_CLASS)
```
```
         context.botl = 1;
```
```
     freeinv(obj);
```
```
     if (!u.uswallow) {
```

         if (ship_object(obj, u.ux, u.uy, FALSE))

```
             return;
```

         if (IS_ALTAR(levl[u.ux][u.uy].typ))

             doaltarobj(obj); /* set bknown */

```
     }
```
```
     dropy(obj);
```
```
 }
```
```
 
```

dropy

 /* dropy - put dropped object at destination; called from lots of places */

```
 void
```
```
 dropy(obj)
```
```
 struct obj *obj;
```
```
 {
```
```
     dropz(obj, FALSE);
```
```
 }
```
```
 
```

dropz

 /* dropz - really put dropped object at its destination... */

```
 void
```
```
 dropz(obj, with_impact)
```
```
 struct obj *obj;
```
```
 boolean with_impact;
```
```
 {
```
```
     if (obj == uwep)
```
```
         setuwep((struct obj *) 0);
```
```
     if (obj == uquiver)
```
```
         setuqwep((struct obj *) 0);
```
```
     if (obj == uswapwep)
```

         setuswapwep((struct obj *) 0);

```
 
```

     if (!u.uswallow && flooreffects(obj, u.ux, u.uy, "drop"))

```
         return;
```

     /* uswallow check done by GAN 01/29/87 */

```
     if (u.uswallow) {
```

         boolean could_petrify = FALSE;

```
         boolean could_poly = FALSE;
```
```
         boolean could_slime = FALSE;
```
```
         boolean could_grow = FALSE;
```
```
         boolean could_heal = FALSE;
```
```
 
```

         if (obj != uball) { /* mon doesn't pick up ball */

             if (obj->otyp == CORPSE) {

                 could_petrify = touch_petrifies(&mons[obj->corpsenm]);

                 could_poly = polyfodder(obj);

                 could_slime = (obj->corpsenm == PM_GREEN_SLIME);

                 could_grow = (obj->corpsenm == PM_WRAITH);

                 could_heal = (obj->corpsenm == PM_NURSE);

```
             }
```

             (void) mpickobj(u.ustuck, obj);

             if (is_animal(u.ustuck->data)) {

                 if (could_poly || could_slime) {

                     (void) newcham(u.ustuck,

                                    could_poly ? (struct permonst *) 0

                                               : &mons[PM_GREEN_SLIME],

                                    FALSE, could_slime);

                     delobj(obj); /* corpse is digested */

                 } else if (could_petrify) {

                     minstapetrify(u.ustuck, TRUE);

                     /* Don't leave a cockatrice corpse in a statue */

```
                     if (!u.uswallow)
```
```
                         delobj(obj);
```

                 } else if (could_grow) {

                     (void) grow_up(u.ustuck, (struct monst *) 0);

                     delobj(obj); /* corpse is digested */

                 } else if (could_heal) {

                     u.ustuck->mhp = u.ustuck->mhpmax;

                     delobj(obj); /* corpse is digested */

```
                 }
```
```
             }
```
```
         }
```
```
     } else {
```

         place_object(obj, u.ux, u.uy);

```
         if (with_impact)
```

             container_impact_dmg(obj, u.ux, u.uy);

```
         if (obj == uball)
```
```
             drop_ball(u.ux, u.uy);
```

         else if (level.flags.has_shop)

```
             sellobj(obj, u.ux, u.uy);
```
```
         stackobj(obj);
```
```
         if (Blind && Levitation)
```
```
             map_object(obj, 0);
```

         newsym(u.ux, u.uy); /* remap location under self */

```
     }
```
```
 }
```
```
 
```

obj_no_longer_held

 /* things that must change when not held; recurse into containers.

    Called for both player and monsters */

```
 void
```
```
 obj_no_longer_held(obj)
```
```
 struct obj *obj;
```
```
 {
```
```
     if (!obj) {
```
```
         return;
```
```
     } else if (Has_contents(obj)) {
```
```
         struct obj *contents;
```
```
 
```

         for (contents = obj->cobj; contents; contents = contents->nobj)

             obj_no_longer_held(contents);

```
     }
```
```
     switch (obj->otyp) {
```
```
     case CRYSKNIFE:
```

         /* Normal crysknife reverts to worm tooth when not held by hero

          * or monster; fixed crysknife has only 10% chance of reverting.

          * When a stack of the latter is involved, it could be worthwhile

          * to give each individual crysknife its own separate 10% chance,

          * but we aren't in any position to handle stack splitting here.

```
          */
```

         if (!obj->oerodeproof || !rn2(10)) {

             /* if monsters aren't moving, assume player is responsible */

             if (!context.mon_moving && !program_state.gameover)

                 costly_alteration(obj, COST_DEGRD);

```
             obj->otyp = WORM_TOOTH;
```
```
             obj->oerodeproof = 0;
```
```
         }
```
```
         break;
```
```
     }
```
```
 }
```
```
 
```

doddrop

 /* 'D' command: drop several things */

```
 int
```
```
 doddrop()
```
```
 {
```
```
     int result = 0;
```
```
 
```

     add_valid_menu_class(0); /* clear any classes already there */

```
     if (*u.ushops)
```

         sellobj_state(SELL_DELIBERATE);

     if (flags.menu_style != MENU_TRADITIONAL

         || (result = ggetobj("drop", drop, 0, FALSE, (unsigned *) 0)) < -1)

```
         result = menu_drop(result);
```
```
     if (*u.ushops)
```
```
         sellobj_state(SELL_NORMAL);
```
```
     reset_occupations();
```
```
 
```
```
     return result;
```
```
 }
```
```
 
```

menu_drop

 /* Drop things from the hero's inventory, using a menu. */

```
 STATIC_OVL int
```
```
 menu_drop(retry)
```
```
 int retry;
```
```
 {
```
```
     int n, i, n_dropped = 0;
```
```
     long cnt;
```
```
     struct obj *otmp, *otmp2;
```
```
     menu_item *pick_list;
```
```
     boolean all_categories = TRUE;
```
```
     boolean drop_everything = FALSE;
```
```
 
```
```
     if (retry) {
```

         all_categories = (retry == -2);

     } else if (flags.menu_style == MENU_FULL) {

```
         all_categories = FALSE;
```

         n = query_category("Drop what type of items?", invent,

                            UNPAID_TYPES | ALL_TYPES | CHOOSE_ALL | BUC_BLESSED

                                | BUC_CURSED | BUC_UNCURSED | BUC_UNKNOWN,

                            &pick_list, PICK_ANY);

```
         if (!n)
```
```
             goto drop_done;
```
```
         for (i = 0; i < n; i++) {
```

             if (pick_list[i].item.a_int == ALL_TYPES_SELECTED)

                 all_categories = TRUE;

             else if (pick_list[i].item.a_int == 'A')

                 drop_everything = TRUE;

```
             else
```

                 add_valid_menu_class(pick_list[i].item.a_int);

```
         }
```

         free((genericptr_t) pick_list);

     } else if (flags.menu_style == MENU_COMBINATION) {

```
         unsigned ggoresults = 0;
```
```
         all_categories = FALSE;
```

         /* Gather valid classes via traditional NetHack method */

         i = ggetobj("drop", drop, 0, TRUE, &ggoresults);

```
         if (i == -2)
```
```
             all_categories = TRUE;
```

         if (ggoresults & ALL_FINISHED) {

```
             n_dropped = i;
```
```
             goto drop_done;
```
```
         }
```
```
     }
```
```
 
```
```
     if (drop_everything) {
```
```
         /*
```

          * Dropping a burning potion of oil while levitating can cause

          * an explosion which might destroy some of hero's inventory,

```
          * so the old code
```

          *      for (otmp = invent; otmp; otmp = otmp2) {

          *          otmp2 = otmp->nobj;

          *          n_dropped += drop(otmp);

```
          *      }
```

          * was unreliable and could lead to an "object lost" panic.

```
          *
```

          * Use the bypass bit to mark items already processed (hence

          * not droppable) and rescan inventory until no unbypassed

```
          * items remain.
```
```
          */
```

         bypass_objlist(invent, FALSE); /* clear bypass bit for invent */

         while ((otmp = nxt_unbypassed_obj(invent)) != 0)

```
             n_dropped += drop(otmp);
```

         /* we might not have dropped everything (worn armor, welded weapon,

            cursed loadstones), so reset any remaining inventory to normal */

         bypass_objlist(invent, FALSE);

```
     } else {
```

         /* should coordinate with perm invent, maybe not show worn items */

         n = query_objlist("What would you like to drop?", invent,

                           USE_INVLET | INVORDER_SORT, &pick_list, PICK_ANY,

                           all_categories ? allow_all : allow_category);

```
         if (n > 0) {
```
```
             /*
```

              * picklist[] contains a set of pointers into inventory, but

              * as soon as something gets dropped, they might become stale

              * (see the drop_everything code above for an explanation).

              * Just checking to see whether one is still in the invent

              * chain is not sufficient validation since destroyed items

              * will be freed and items we've split here might have already

              * reused that memory and put the same pointer value back into

              * invent.  Ditto for using invlet to validate.  So we start

              * by setting bypass on all of invent, then check each pointer

              * to verify that it is in invent and has that bit set.

```
              */
```

             bypass_objlist(invent, TRUE);

```
             for (i = 0; i < n; i++) {
```

                 otmp = pick_list[i].item.a_obj;

                 for (otmp2 = invent; otmp2; otmp2 = otmp2->nobj)

                     if (otmp2 == otmp)

```
                         break;
```

                 if (!otmp2 || !otmp2->bypass)

```
                     continue;
```

                 /* found next selected invent item */

                 cnt = pick_list[i].count;

                 if (cnt < otmp->quan) {

                     if (welded(otmp)) {

                         ; /* don't split */

                     } else if (otmp->otyp == LOADSTONE && otmp->cursed) {

                         /* same kludge as getobj(), for canletgo()'s use */

                         otmp->corpsenm = (int) cnt; /* don't split */

```
                     } else {
```

                         otmp = splitobj(otmp, cnt);

```
                     }
```
```
                 }
```

                 n_dropped += drop(otmp);

```
             }
```

             bypass_objlist(invent, FALSE); /* reset invent to normal */

             free((genericptr_t) pick_list);

```
         }
```
```
     }
```
```
 
```
```
 drop_done:
```
```
     return n_dropped;
```
```
 }
```
```
 
```

dodown

```
 /* on a ladder, used in goto_level */
```

 static NEARDATA boolean at_ladder = FALSE;

```
 
```
```
 /* the '>' command */
```
```
 int
```
```
 dodown()
```
```
 {
```
```
     struct trap *trap = 0;
```

     boolean stairs_down = ((u.ux == xdnstair && u.uy == ydnstair)

                            || (u.ux == sstairs.sx && u.uy == sstairs.sy

                                && !sstairs.up)),

             ladder_down = (u.ux == xdnladder && u.uy == ydnladder);

```
 
```
```
     if (u_rooted())
```
```
         return 1;
```
```
 
```
```
     if (stucksteed(TRUE)) {
```
```
         return 0;
```
```
     }
```

     /* Levitation might be blocked, but player can still use '>' to

        turn off controlled levitation */

```
     if (HLevitation || ELevitation) {
```

         if ((HLevitation & I_SPECIAL) || (ELevitation & W_ARTI)) {

             /* end controlled levitation */

             if (ELevitation & W_ARTI) {

```
                 struct obj *obj;
```
```
 
```

                 for (obj = invent; obj; obj = obj->nobj) {

                     if (obj->oartifact

                         && artifact_has_invprop(obj, LEVITATION)) {

                         if (obj->age < monstermoves)

                             obj->age = monstermoves;

                         obj->age += rnz(100);

```
                     }
```
```
                 }
```
```
             }
```

             if (float_down(I_SPECIAL | TIMEOUT, W_ARTI)) {

                 return 1; /* came down, so moved */

             } else if (!HLevitation && !ELevitation) {

                 Your("latent levitation ceases.");

                 return 1; /* did something, effectively moved */

```
             }
```
```
         }
```
```
         if (BLevitation) {
```

             ; /* weren't actually floating after all */

```
         } else if (Blind) {
```

             /* Avoid alerting player to an unknown stair or ladder.

              * Changes the message for a covered, known staircase

              * too; staircase knowledge is not stored anywhere.

```
              */
```
```
             if (stairs_down)
```
```
                 stairs_down =
```

                     (glyph_to_cmap(levl[u.ux][u.uy].glyph) == S_dnstair);

```
             else if (ladder_down)
```
```
                 ladder_down =
```

                     (glyph_to_cmap(levl[u.ux][u.uy].glyph) == S_dnladder);

```
         }
```

         floating_above(stairs_down ? "stairs" : ladder_down

                                                     ? "ladder"

                                                     : surface(u.ux, u.uy));

```
         return 0; /* didn't move */
```
```
     }
```

     if (!stairs_down && !ladder_down) {

```
         trap = t_at(u.ux, u.uy);
```

         if (trap && uteetering_at_seen_pit(trap)) {

```
             dotrap(trap, TOOKPLUNGE);
```
```
             return 1;
```

         } else if (!trap || (trap->ttyp != TRAPDOOR && trap->ttyp != HOLE)

                    || !Can_fall_thru(&u.uz) || !trap->tseen) {

             if (flags.autodig && !context.nopick && uwep && is_pick(uwep)) {

                 return use_pick_axe2(uwep);

```
             } else {
```

                 You_cant("go down here.");

```
                 return 0;
```
```
             }
```
```
         }
```
```
     }
```
```
     if (u.ustuck) {
```

         You("are %s, and cannot go down.",

             !u.uswallow ? "being held" : is_animal(u.ustuck->data)

                                              ? "swallowed"

                                              : "engulfed");

```
         return 1;
```
```
     }
```

     if (on_level(&valley_level, &u.uz) && !u.uevent.gehennom_entered) {

         You("are standing at the gate to Gehennom.");

         pline("Unspeakable cruelty and harm lurk down there.");

         if (yn("Are you sure you want to enter?") != 'y')

```
             return 0;
```
```
         else
```
```
             pline("So be it.");
```

         u.uevent.gehennom_entered = 1; /* don't ask again */

```
     }
```
```
 
```
```
     if (!next_to_u()) {
```

         You("are held back by your pet!");

```
         return 0;
```
```
     }
```
```
 
```
```
     if (trap)
```

         You("%s %s.", Flying ? "fly" : locomotion(youmonst.data, "jump"),

             trap->ttyp == HOLE ? "down the hole" : "through the trap door");

```
 
```

     if (trap && Is_stronghold(&u.uz)) {

```
         goto_hell(FALSE, TRUE);
```
```
     } else {
```

         at_ladder = (boolean) (levl[u.ux][u.uy].typ == LADDER);

```
         next_level(!trap);
```
```
         at_ladder = FALSE;
```
```
     }
```
```
     return 1;
```
```
 }
```
```
 
```

doup

```
 /* the '<' command */
```
```
 int
```
```
 doup()
```
```
 {
```
```
     if (u_rooted())
```
```
         return 1;
```
```
 
```
```
     /* "up" to get out of a pit... */
```

     if (u.utrap && u.utraptype == TT_PIT) {

```
         climb_pit();
```
```
         return 1;
```
```
     }
```
```
 
```

     if ((u.ux != xupstair || u.uy != yupstair)

         && (!xupladder || u.ux != xupladder || u.uy != yupladder)

         && (!sstairs.sx || u.ux != sstairs.sx || u.uy != sstairs.sy

```
             || !sstairs.up)) {
```
```
         You_cant("go up here.");
```
```
         return 0;
```
```
     }
```
```
     if (stucksteed(TRUE)) {
```
```
         return 0;
```
```
     }
```
```
     if (u.ustuck) {
```

         You("are %s, and cannot go up.",

             !u.uswallow ? "being held" : is_animal(u.ustuck->data)

                                              ? "swallowed"

                                              : "engulfed");

```
         return 1;
```
```
     }
```

     if (near_capacity() > SLT_ENCUMBER) {

         /* No levitation check; inv_weight() already allows for it */

         Your("load is too heavy to climb the %s.",

              levl[u.ux][u.uy].typ == STAIRS ? "stairs" : "ladder");

```
         return 1;
```
```
     }
```
```
     if (ledger_no(&u.uz) == 1) {
```

         if (yn("Beware, there will be no return! Still climb?") != 'y')

```
             return 0;
```
```
     }
```
```
     if (!next_to_u()) {
```

         You("are held back by your pet!");

```
         return 0;
```
```
     }
```

     at_ladder = (boolean) (levl[u.ux][u.uy].typ == LADDER);

```
     prev_level(TRUE);
```
```
     at_ladder = FALSE;
```
```
     return 1;
```
```
 }
```
```
 
```

currentlevel_rewrite

```
 d_level save_dlevel = { 0, 0 };
```
```
 
```

 /* check that we can write out the current level */

```
 STATIC_OVL int
```
```
 currentlevel_rewrite()
```
```
 {
```
```
     register int fd;
```
```
     char whynot[BUFSZ];
```
```
 
```

     /* since level change might be a bit slow, flush any buffered screen

      *  output (like "you fall through a trap door") */

```
     mark_synch();
```
```
 
```

     fd = create_levelfile(ledger_no(&u.uz), whynot);

```
     if (fd < 0) {
```
```
         /*
```

          * This is not quite impossible: e.g., we may have

          * exceeded our quota. If that is the case then we

          * cannot leave this level, and cannot save either.

          * Another possibility is that the directory was not

```
          * writable.
```
```
          */
```
```
         pline1(whynot);
```
```
         return -1;
```
```
     }
```
```
 
```
```
 #ifdef MFLOPPY
```

     if (!savelev(fd, ledger_no(&u.uz), COUNT_SAVE)) {

```
         (void) nhclose(fd);
```

         delete_levelfile(ledger_no(&u.uz));

         pline("NetHack is out of disk space for making levels!");

         You("can save, quit, or continue playing.");

```
         return -1;
```
```
     }
```
```
 #endif
```
```
     return fd;
```
```
 }
```
```
 
```

save_currentstate

```
 #ifdef INSURANCE
```
```
 void
```
```
 save_currentstate()
```
```
 {
```
```
     int fd;
```
```
 
```
```
     if (flags.ins_chkpt) {
```

         /* write out just-attained level, with pets and everything */

```
         fd = currentlevel_rewrite();
```
```
         if (fd < 0)
```
```
             return;
```
```
         bufon(fd);
```

         savelev(fd, ledger_no(&u.uz), WRITE_SAVE);

```
         bclose(fd);
```
```
     }
```
```
 
```
```
     /* write out non-level state */
```
```
     savestateinlock();
```
```
 }
```
```
 #endif
```
```
 
```
```
 /*
```
```
 static boolean
```
```
 badspot(x, y)
```
```
 register xchar x, y;
```
```
 {
```

     return (boolean) ((levl[x][y].typ != ROOM

                        && levl[x][y].typ != AIR

                        && levl[x][y].typ != CORR)

                       || MON_AT(x, y));

```
 }
```
```
 */
```
```
 
```

goto_level

```
 void
```

 goto_level(newlevel, at_stairs, falling, portal)

```
 d_level *newlevel;
```
```
 boolean at_stairs, falling, portal;
```
```
 {
```
```
     int fd, l_idx;
```
```
     xchar new_ledger;
```

     boolean cant_go_back, up = (depth(newlevel) < depth(&u.uz)),

                           newdungeon = (u.uz.dnum != newlevel->dnum),

                           was_in_W_tower = In_W_tower(u.ux, u.uy, &u.uz),

                           familiar = FALSE;

     boolean new = FALSE; /* made a new level? */

```
     struct monst *mtmp;
```
```
     char whynot[BUFSZ];
```
```
     char *annotation;
```
```
 
```

     if (dunlev(newlevel) > dunlevs_in_dungeon(newlevel))

         newlevel->dlevel = dunlevs_in_dungeon(newlevel);

     if (newdungeon && In_endgame(newlevel)) { /* 1st Endgame Level !!! */

```
         if (!u.uhave.amulet)
```

             return;  /* must have the Amulet */

         if (!wizard) /* wizard ^V can bypass Earth level */

             assign_level(newlevel, &earth_level); /* (redundant) */

```
     }
```
```
     new_ledger = ledger_no(newlevel);
```
```
     if (new_ledger <= 0)
```

         done(ESCAPED); /* in fact < 0 is impossible */

```
 
```

     /* If you have the amulet and are trying to get out of Gehennom,

      * going up a set of stairs sometimes does some very strange things!

      * Biased against law and towards chaos.  (The chance to be sent

      * down multiple levels when attempting to go up are significantly

      * less than the corresponding comment in older versions indicated

      * due to overlooking the effect of the call to assign_rnd_lvl().)

```
      *
```

      * Odds for making it to the next level up, or of being sent down:

```
      *  "up"    L      N      C
```
```
      *   +1   75.0   75.0   75.0
```
```
      *    0    6.25   8.33  12.5
```
```
      *   -1   11.46  12.50  12.5
```
```
      *   -2    5.21   4.17   0.0
```
```
      *   -3    2.08   0.0    0.0
```
```
      */
```

     if (Inhell && up && u.uhave.amulet && !newdungeon && !portal

         && (dunlev(&u.uz) < dunlevs_in_dungeon(&u.uz) - 3)) {

```
         if (!rn2(4)) {
```

             int odds = 3 + (int) u.ualign.type,   /* 2..4 */

                 diff = odds <= 1 ? 0 : rn2(odds); /* paranoia */

```
 
```
```
             if (diff != 0) {
```

                 assign_rnd_level(newlevel, &u.uz, diff);

                 /* if inside the tower, stay inside */

                 if (was_in_W_tower && !On_W_tower_level(newlevel))

```
                     diff = 0;
```
```
             }
```
```
             if (diff == 0)
```

                 assign_level(newlevel, &u.uz);

```
 
```

             new_ledger = ledger_no(newlevel);

```
 
```

             pline("A mysterious force momentarily surrounds you...");

             if (on_level(newlevel, &u.uz)) {

                 (void) safe_teleds(FALSE);

```
                 (void) next_to_u();
```
```
                 return;
```
```
             } else
```

                 at_stairs = at_ladder = FALSE;

```
         }
```
```
     }
```
```
 
```

     /* Prevent the player from going past the first quest level unless

      * (s)he has been given the go-ahead by the leader.

```
      */
```

     if (on_level(&u.uz, &qstart_level) && !newdungeon && !ok_to_quest()) {

         pline("A mysterious force prevents you from descending.");

```
         return;
```
```
     }
```
```
 
```
```
     if (on_level(newlevel, &u.uz))
```
```
         return; /* this can happen */
```
```
 
```

     /* tethered movement makes level change while trapped feasible */

     if (u.utrap && u.utraptype == TT_BURIEDBALL)

         buried_ball_to_punishment(); /* (before we save/leave old level) */

```
 
```
```
     fd = currentlevel_rewrite();
```
```
     if (fd < 0)
```
```
         return;
```
```
 
```

     if (falling) /* assuming this is only trap door or hole */

         impact_drop((struct obj *) 0, u.ux, u.uy, newlevel->dlevel);

```
 
```

     check_special_room(TRUE); /* probably was a trap door */

```
     if (Punished)
```
```
         unplacebc();
```

     u.utrap = 0; /* needed in level_tele */

```
     fill_pit(u.ux, u.uy);
```
```
     u.ustuck = 0; /* idem */
```
```
     u.uinwater = 0;
```

     u.uundetected = 0; /* not hidden, even if means are available */

```
     keepdogs(FALSE);
```
```
     if (u.uswallow) /* idem */
```
```
         u.uswldtim = u.uswallow = 0;
```

     recalc_mapseen(); /* recalculate map overview before we leave the level */

```
     /*
```

      *  We no longer see anything on the level.  Make sure that this

      *  follows u.uswallow set to null since uswallow overrides all

```
      *  normal vision.
```
```
      */
```
```
     vision_recalc(2);
```
```
 
```
```
     /*
```

      * Save the level we're leaving.  If we're entering the endgame,

      * we can get rid of all existing levels because they cannot be

      * reached any more.  We still need to use savelev()'s cleanup

      * for the level being left, to recover dynamic memory in use and

      * to avoid dangling timers and light sources.

```
      */
```

     cant_go_back = (newdungeon && In_endgame(newlevel));

```
     if (!cant_go_back) {
```

         update_mlstmv(); /* current monsters are becoming inactive */

         bufon(fd);       /* use buffered output */

```
     }
```
```
     savelev(fd, ledger_no(&u.uz),
```

             cant_go_back ? FREE_SAVE : (WRITE_SAVE | FREE_SAVE));

```
     bclose(fd);
```
```
     if (cant_go_back) {
```

         /* discard unreachable levels; keep #0 */

         for (l_idx = maxledgerno(); l_idx > 0; --l_idx)

```
             delete_levelfile(l_idx);
```

         /* mark #overview data for all dungeon branches as uninteresting */

         for (l_idx = 0; l_idx < n_dgns; ++l_idx)

```
             remdun_mapseen(l_idx);
```
```
     }
```
```
 
```

     if (Is_rogue_level(newlevel) || Is_rogue_level(&u.uz))

         assign_graphics(Is_rogue_level(newlevel) ? ROGUESET : PRIMARY);

```
 #ifdef USE_TILES
```
```
     substitute_tiles(newlevel);
```
```
 #endif
```

     /* record this level transition as a potential seen branch unless using

      * some non-standard means of transportation (level teleport).

```
      */
```

     if ((at_stairs || falling || portal) && (u.uz.dnum != newlevel->dnum))

         recbranch_mapseen(&u.uz, newlevel);

```
     assign_level(&u.uz0, &u.uz);
```
```
     assign_level(&u.uz, newlevel);
```

     assign_level(&u.utolev, newlevel);

```
     u.utotype = 0;
```

     if (!builds_up(&u.uz)) { /* usual case */

         if (dunlev(&u.uz) > dunlev_reached(&u.uz))

             dunlev_reached(&u.uz) = dunlev(&u.uz);

```
     } else {
```

         if (dunlev_reached(&u.uz) == 0

             || dunlev(&u.uz) < dunlev_reached(&u.uz))

             dunlev_reached(&u.uz) = dunlev(&u.uz);

```
     }
```

     reset_rndmonst(NON_PM); /* u.uz change affects monster generation */

```
 
```

     /* set default level change destination areas */

     /* the special level code may override these */

     (void) memset((genericptr_t) &updest, 0, sizeof updest);

     (void) memset((genericptr_t) &dndest, 0, sizeof dndest);

```
 
```

     if (!(level_info[new_ledger].flags & LFILE_EXISTS)) {

         /* entering this level for first time; make it now */

         if (level_info[new_ledger].flags & (FORGOTTEN | VISITED)) {

             impossible("goto_level: returning to discarded level?");

             level_info[new_ledger].flags &= ~(FORGOTTEN | VISITED);

```
         }
```
```
         mklev();
```

         new = TRUE; /* made the level */

```
     } else {
```

         /* returning to previously visited level; reload it */

         fd = open_levelfile(new_ledger, whynot);

         if (tricked_fileremoved(fd, whynot)) {

             /* we'll reach here if running in wizard mode */

             error("Cannot continue this game.");

```
         }
```
```
         minit(); /* ZEROCOMP */
```

         getlev(fd, hackpid, new_ledger, FALSE);

```
         (void) nhclose(fd);
```

         oinit(); /* reassign level dependent obj probabilities */

```
     }
```
```
     reglyph_darkroom();
```

     /* do this prior to level-change pline messages */

     vision_reset();         /* clear old level's line-of-sight */

     vision_full_recalc = 0; /* don't let that reenable vision yet */

     flush_screen(-1);       /* ensure all map flushes are postponed */

```
 
```

     if (portal && !In_endgame(&u.uz)) {

         /* find the portal on the new level */

```
         register struct trap *ttrap;
```
```
 
```

         for (ttrap = ftrap; ttrap; ttrap = ttrap->ntrap)

             if (ttrap->ttyp == MAGIC_PORTAL)

```
                 break;
```
```
 
```
```
         if (!ttrap)
```

             panic("goto_level: no corresponding portal!");

```
         seetrap(ttrap);
```

         u_on_newpos(ttrap->tx, ttrap->ty);

     } else if (at_stairs && !In_endgame(&u.uz)) {

```
         if (up) {
```
```
             if (at_ladder)
```

                 u_on_newpos(xdnladder, ydnladder);

```
             else if (newdungeon)
```
```
                 u_on_sstairs(1);
```
```
             else
```
```
                 u_on_dnstairs();
```

             /* you climb up the {stairs|ladder};

                fly up the stairs; fly up along the ladder */

             pline("%s %s up%s the %s.",

                   (Punished && !Levitation) ? "With great effort you" : "You",

                   Flying ? "fly" : "climb",

                   (Flying && at_ladder) ? " along" : "",

                   at_ladder ? "ladder" : "stairs");

```
         } else { /* down */
```
```
             if (at_ladder)
```

                 u_on_newpos(xupladder, yupladder);

```
             else if (newdungeon)
```
```
                 u_on_sstairs(0);
```
```
             else
```
```
                 u_on_upstairs();
```
```
             if (!u.dz) {
```

                 ; /* stayed on same level? (no transit effects) */

```
             } else if (Flying) {
```
```
                 if (flags.verbose)
```

                     You("fly down %s.",

                         at_ladder ? "along the ladder" : "the stairs");

             } else if (near_capacity() > UNENCUMBERED || Punished

```
                        || Fumbling) {
```

                 You("fall down the %s.", at_ladder ? "ladder" : "stairs");

```
                 if (Punished) {
```
```
                     drag_down();
```

                     ballrelease(FALSE);

```
                 }
```

                 /* falling off steed has its own losehp() call */

```
                 if (u.usteed)
```

                     dismount_steed(DISMOUNT_FELL);

```
                 else
```

                     losehp(Maybe_Half_Phys(rnd(3)),

                            at_ladder ? "falling off a ladder"

                                      : "tumbling down a flight of stairs",

                            KILLED_BY);

                 selftouch("Falling, you");

             } else { /* ordinary descent */

```
                 if (flags.verbose)
```

                     You("%s.", at_ladder ? "climb down the ladder"

                                          : "descend the stairs");

```
             }
```
```
         }
```

     } else { /* trap door or level_tele or In_endgame */

         u_on_rndspot((up ? 1 : 0) | (was_in_W_tower ? 2 : 0));

```
         if (falling) {
```
```
             if (Punished)
```
```
                 ballfall();
```

             selftouch("Falling, you");

```
         }
```
```
     }
```
```
 
```
```
     if (Punished)
```
```
         placebc();
```
```
     obj_delivery(FALSE);
```
```
     losedogs();
```

     kill_genocided_monsters(); /* for those wiped out while in limbo */

```
     /*
```

      * Expire all timers that have gone off while away.  Must be

      * after migrating monsters and objects are delivered

```
      * (losedogs and obj_delivery).
```
```
      */
```
```
     run_timers();
```
```
 
```
```
     initrack();
```
```
 
```

     if ((mtmp = m_at(u.ux, u.uy)) != 0 && mtmp != u.usteed) {

         /* There's a monster at your target destination; it might be one

            which accompanied you--see mon_arrive(dogmove.c)--or perhaps

            it was already here.  Randomly move you to an adjacent spot

            or else the monster to any nearby location.  Prior to 3.3.0

            the latter was done unconditionally. */

```
         coord cc;
```
```
 
```

         if (!rn2(2) && enexto(&cc, u.ux, u.uy, youmonst.data)

             && distu(cc.x, cc.y) <= 2)

             u_on_newpos(cc.x, cc.y); /*[maybe give message here?]*/

```
         else
```
```
             mnexto(mtmp);
```
```
 
```

         if ((mtmp = m_at(u.ux, u.uy)) != 0) {

             /* there was an unconditional impossible("mnearto failed")

                here, but it's not impossible and we're prepared to cope

                with the situation, so only say something when debugging */

```
             if (wizard)
```

                 pline("(monster in hero's way)");

```
             if (!rloc(mtmp, TRUE))
```

                 /* no room to move it; send it away, to return later */

                 migrate_to_level(mtmp, ledger_no(&u.uz), MIGR_RANDOM,

                                  (coord *) 0);

```
         }
```
```
     }
```
```
 
```

     /* initial movement of bubbles just before vision_recalc */

     if (Is_waterlevel(&u.uz) || Is_airlevel(&u.uz))

```
         movebubbles();
```
```
     else if (Is_firelevel(&u.uz))
```
```
         fumaroles();
```
```
 
```

     if (level_info[new_ledger].flags & FORGOTTEN) {

         forget_map(ALL_MAP); /* forget the map */

         forget_traps();      /* forget all traps too */

```
         familiar = TRUE;
```

         level_info[new_ledger].flags &= ~FORGOTTEN;

```
     }
```
```
 
```
```
     /* Reset the screen. */
```

     vision_reset(); /* reset the blockages */

     docrt();        /* does a full vision recalc */

```
     flush_screen(-1);
```
```
 
```
```
     /*
```

      *  Move all plines beyond the screen reset.

```
      */
```
```
 
```

     /* special levels can have a custom arrival message */

```
     deliver_splev_message();
```
```
 
```

     /* give room entrance message, if any */

```
     check_special_room(FALSE);
```
```
 
```

     /* deliver objects traveling with player */

```
     obj_delivery(TRUE);
```
```
 
```

     /* Check whether we just entered Gehennom. */

```
     if (!In_hell(&u.uz0) && Inhell) {
```
```
         if (Is_valley(&u.uz)) {
```

             You("arrive at the Valley of the Dead...");

             pline_The("odor of burnt flesh and decay pervades the air.");

```
 #ifdef MICRO
```

             display_nhwindow(WIN_MESSAGE, FALSE);

```
 #endif
```

             You_hear("groans and moans everywhere.");

```
         } else
```

             pline("It is hot here.  You smell smoke...");

         u.uachieve.enter_gehennom = 1;

```
     }
```

     /* in case we've managed to bypass the Valley's stairway down */

```
     if (Inhell && !Is_valley(&u.uz))
```

         u.uevent.gehennom_entered = 1;

```
 
```
```
     if (familiar) {
```

         static const char *const fam_msgs[4] = {

             "You have a sense of deja vu.",

             "You feel like you've been here before.",

             "This place %s familiar...", 0 /* no message */

```
         };
```

         static const char *const halu_fam_msgs[4] = {

             "Whoa!  Everything %s different.",

             "You are surrounded by twisty little passages, all alike.",

             "Gee, this %s like uncle Conan's place...", 0 /* no message */

```
         };
```
```
         const char *mesg;
```
```
         char buf[BUFSZ];
```
```
         int which = rn2(4);
```
```
 
```
```
         if (Hallucination)
```

             mesg = halu_fam_msgs[which];

```
         else
```
```
             mesg = fam_msgs[which];
```

         if (mesg && index(mesg, '%')) {

             Sprintf(buf, mesg, !Blind ? "looks" : "seems");

```
             mesg = buf;
```
```
         }
```
```
         if (mesg)
```
```
             pline1(mesg);
```
```
     }
```
```
 
```

     /* special location arrival messages/events */

```
     if (In_endgame(&u.uz)) {
```

         if (new &&on_level(&u.uz, &astral_level))

             final_level(); /* guardian angel,&c */

         else if (newdungeon && u.uhave.amulet)

             resurrect(); /* force confrontation with Wizard */

```
     } else if (In_quest(&u.uz)) {
```

         onquest(); /* might be reaching locate|goal level */

```
     } else if (In_V_tower(&u.uz)) {
```

         if (newdungeon && In_hell(&u.uz0))

             pline_The("heat and smoke are gone.");

```
     } else if (Is_knox(&u.uz)) {
```

         /* alarm stops working once Croesus has died */

         if (new || !mvitals[PM_CROESUS].died) {

             You("have penetrated a high security area!");

             pline("An alarm sounds!");

             for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {

                 if (DEADMONSTER(mtmp))

```
                     continue;
```
```
                 mtmp->msleeping = 0;
```
```
             }
```
```
         }
```
```
     } else {
```

         if (new && Is_rogue_level(&u.uz))

             You("enter what seems to be an older, more primitive world.");

         /* main dungeon message from your quest leader */

         if (!In_quest(&u.uz0) && at_dgn_entrance("The Quest")

             && !(u.uevent.qcompleted || u.uevent.qexpelled

                  || quest_status.leader_is_dead)) {

```
             if (!u.uevent.qcalled) {
```
```
                 u.uevent.qcalled = 1;
```

                 com_pager(2); /* main "leader needs help" message */

             } else {          /* reminder message */

                 com_pager(Role_if(PM_ROGUE) ? 4 : 3);

```
             }
```
```
         }
```
```
     }
```
```
 
```

     assign_level(&u.uz0, &u.uz); /* reset u.uz0 */

```
 #ifdef INSURANCE
```
```
     save_currentstate();
```
```
 #endif
```
```
 
```

     if ((annotation = get_annotation(&u.uz)))

         You("remember this level as %s.", annotation);

```
 
```

     /* assume this will always return TRUE when changing level */

```
     (void) in_out_region(u.ux, u.uy);
```
```
     (void) pickup(1);
```
```
     context.polearm.hitmon = NULL;
```
```
 }
```
```
 
```

final_level

```
 STATIC_OVL void
```
```
 final_level()
```
```
 {
```
```
     struct monst *mtmp;
```
```
 
```

     /* reset monster hostility relative to player */

     for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {

```
         if (DEADMONSTER(mtmp))
```
```
             continue;
```
```
         reset_hostility(mtmp);
```
```
     }
```
```
 
```
```
     /* create some player-monsters */
```
```
     create_mplayers(rn1(4, 3), TRUE);
```
```
 
```

     /* create a guardian angel next to player, if worthy */

```
     gain_guardian_angel();
```
```
 }
```
```
 
```

schedule_goto

 static char *dfr_pre_msg = 0,  /* pline() before level change */

             *dfr_post_msg = 0; /* pline() after level change */

```
 
```

 /* change levels at the end of this turn, after monsters finish moving */

```
 void
```

 schedule_goto(tolev, at_stairs, falling, portal_flag, pre_msg, post_msg)

```
 d_level *tolev;
```
```
 boolean at_stairs, falling;
```
```
 int portal_flag;
```
```
 const char *pre_msg, *post_msg;
```
```
 {
```

     int typmask = 0100; /* non-zero triggers `deferred_goto' */

```
 
```

     /* destination flags (`goto_level' args) */

```
     if (at_stairs)
```
```
         typmask |= 1;
```
```
     if (falling)
```
```
         typmask |= 2;
```
```
     if (portal_flag)
```
```
         typmask |= 4;
```
```
     if (portal_flag < 0)
```

         typmask |= 0200; /* flag for portal removal */

```
     u.utotype = typmask;
```
```
     /* destination level */
```
```
     assign_level(&u.utolev, tolev);
```
```
 
```
```
     if (pre_msg)
```

         dfr_pre_msg = dupstr(pre_msg);

```
     if (post_msg)
```

         dfr_post_msg = dupstr(post_msg);

```
 }
```
```
 
```

deferred_goto

 /* handle something like portal ejection */

```
 void
```
```
 deferred_goto()
```
```
 {
```

     if (!on_level(&u.uz, &u.utolev)) {

```
         d_level dest;
```

         int typmask = u.utotype; /* save it; goto_level zeroes u.utotype */

```
 
```

         assign_level(&dest, &u.utolev);

```
         if (dfr_pre_msg)
```
```
             pline1(dfr_pre_msg);
```

         goto_level(&dest, !!(typmask & 1), !!(typmask & 2), !!(typmask & 4));

         if (typmask & 0200) { /* remove portal */

             struct trap *t = t_at(u.ux, u.uy);

```
 
```
```
             if (t) {
```
```
                 deltrap(t);
```
```
                 newsym(u.ux, u.uy);
```
```
             }
```
```
         }
```
```
         if (dfr_post_msg)
```
```
             pline1(dfr_post_msg);
```
```
     }
```

     u.utotype = 0; /* our caller keys off of this */

```
     if (dfr_pre_msg)
```

         free((genericptr_t) dfr_pre_msg), dfr_pre_msg = 0;

```
     if (dfr_post_msg)
```

         free((genericptr_t) dfr_post_msg), dfr_post_msg = 0;

```
 }
```
```
 
```

revive_corpse

```
 /*
```

  * Return TRUE if we created a monster for the corpse.  If successful, the

```
  * corpse is gone.
```
```
  */
```
```
 boolean
```
```
 revive_corpse(corpse)
```
```
 struct obj *corpse;
```
```
 {
```
```
     struct monst *mtmp, *mcarry;
```
```
     boolean is_uwep, chewed;
```
```
     xchar where;
```
```
     char cname[BUFSZ];
```

     struct obj *container = (struct obj *) 0;

```
     int container_where = 0;
```
```
 
```
```
     where = corpse->where;
```
```
     is_uwep = (corpse == uwep);
```
```
     chewed = (corpse->oeaten != 0);
```
```
     Strcpy(cname,
```

            corpse_xname(corpse, chewed ? "bite-covered" : (const char *) 0,

                         CXN_SINGULAR));

     mcarry = (where == OBJ_MINVENT) ? corpse->ocarry : 0;

```
 
```
```
     if (where == OBJ_CONTAINED) {
```
```
         struct monst *mtmp2;
```
```
 
```

         container = corpse->ocontainer;

```
         mtmp2 =
```

             get_container_location(container, &container_where, (int *) 0);

         /* container_where is the outermost container's location even if

```
          * nested */
```

         if (container_where == OBJ_MINVENT && mtmp2)

```
             mcarry = mtmp2;
```
```
     }
```

     mtmp = revive(corpse, FALSE); /* corpse is gone if successful */

```
 
```
```
     if (mtmp) {
```
```
         switch (where) {
```
```
         case OBJ_INVENT:
```
```
             if (is_uwep)
```

                 pline_The("%s writhes out of your grasp!", cname);

```
             else
```

                 You_feel("squirming in your backpack!");

```
             break;
```
```
 
```
```
         case OBJ_FLOOR:
```

             if (cansee(mtmp->mx, mtmp->my))

                 pline("%s rises from the dead!",

                       chewed ? Adjmonnam(mtmp, "bite-covered")

                              : Monnam(mtmp));

```
             break;
```
```
 
```

         case OBJ_MINVENT: /* probably a nymph's */

             if (cansee(mtmp->mx, mtmp->my)) {

                 if (canseemon(mcarry))

                     pline("Startled, %s drops %s as it revives!",

                           mon_nam(mcarry), an(cname));

```
                 else
```

                     pline("%s suddenly appears!",

                           chewed ? Adjmonnam(mtmp, "bite-covered")

                                  : Monnam(mtmp));

```
             }
```
```
             break;
```
```
         case OBJ_CONTAINED: {
```
```
             char sackname[BUFSZ];
```
```
 
```

             if (container_where == OBJ_MINVENT && cansee(mtmp->mx, mtmp->my)

                 && mcarry && canseemon(mcarry) && container) {

                 pline("%s writhes out of %s!", Amonnam(mtmp),

                       yname(container));

             } else if (container_where == OBJ_INVENT && container) {

                 Strcpy(sackname, an(xname(container)));

                 pline("%s %s out of %s in your pack!",

                       Blind ? Something : Amonnam(mtmp),

                       locomotion(mtmp->data, "writhes"), sackname);

             } else if (container_where == OBJ_FLOOR && container

                        && cansee(mtmp->mx, mtmp->my)) {

                 Strcpy(sackname, an(xname(container)));

                 pline("%s escapes from %s!", Amonnam(mtmp), sackname);

```
             }
```
```
             break;
```
```
         }
```
```
         default:
```

             /* we should be able to handle the other cases... */

             impossible("revive_corpse: lost corpse @ %d", where);

```
             break;
```
```
         }
```
```
         return TRUE;
```
```
     }
```
```
     return FALSE;
```
```
 }
```
```
 
```

revive_mon

 /* Revive the corpse via a timeout. */

```
 /*ARGSUSED*/
```
```
 void
```
```
 revive_mon(arg, timeout)
```
```
 anything *arg;
```
```
 long timeout UNUSED;
```
```
 {
```
```
     struct obj *body = arg->a_obj;
```

     struct permonst *mptr = &mons[body->corpsenm];

```
     struct monst *mtmp;
```
```
     xchar x, y;
```
```
 
```

     /* corpse will revive somewhere else if there is a monster in the way;

        Riders get a chance to try to bump the obstacle out of their way */

     if ((mptr->mflags3 & M3_DISPLACES) != 0 && body->where == OBJ_FLOOR

         && get_obj_location(body, &x, &y, 0) && (mtmp = m_at(x, y)) != 0) {

         boolean notice_it = canseemon(mtmp); /* before rloc() */

```
         char *monname = Monnam(mtmp);
```
```
 
```
```
         if (rloc(mtmp, TRUE)) {
```

             if (notice_it && !canseemon(mtmp))

                 pline("%s vanishes.", monname);

             else if (!notice_it && canseemon(mtmp))

                 pline("%s appears.", Monnam(mtmp)); /* not pre-rloc monname */

             else if (notice_it && dist2(mtmp->mx, mtmp->my, x, y) > 2)

                 pline("%s teleports.", monname); /* saw it and still see it */

```
         }
```
```
     }
```
```
 
```

     /* if we succeed, the corpse is gone */

```
     if (!revive_corpse(body)) {
```
```
         long when;
```
```
         int action;
```
```
 
```

         if (is_rider(mptr) && rn2(99)) { /* Rider usually tries again */

```
             action = REVIVE_MON;
```

             for (when = 3L; when < 67L; when++)

```
                 if (!rn2(3))
```
```
                     break;
```

         } else { /* rot this corpse away */

             You_feel("%sless hassled.", is_rider(mptr) ? "much " : "");

```
             action = ROT_CORPSE;
```

             when = 250L - (monstermoves - body->age);

```
             if (when < 1L)
```
```
                 when = 1L;
```
```
         }
```

         (void) start_timer(when, TIMER_OBJECT, action, arg);

```
     }
```
```
 }
```
```
 
```

donull

```
 int
```
```
 donull()
```
```
 {
```

     return 1; /* Do nothing, but let other things happen */

```
 }
```
```
 
```

wipeoff

```
 STATIC_PTR int
```
```
 wipeoff(VOID_ARGS)
```
```
 {
```
```
     if (u.ucreamed < 4)
```
```
         u.ucreamed = 0;
```
```
     else
```
```
         u.ucreamed -= 4;
```
```
     if (Blinded < 4)
```
```
         Blinded = 0;
```
```
     else
```
```
         Blinded -= 4;
```
```
     if (!Blinded) {
```

         pline("You've got the glop off.");

```
         u.ucreamed = 0;
```
```
         if (!gulp_blnd_check()) {
```
```
             Blinded = 1;
```
```
             make_blinded(0L, TRUE);
```
```
         }
```
```
         return 0;
```
```
     } else if (!u.ucreamed) {
```

         Your("%s feels clean now.", body_part(FACE));

```
         return 0;
```
```
     }
```
```
     return 1; /* still busy */
```
```
 }
```
```
 
```

dowipe

```
 int
```
```
 dowipe()
```
```
 {
```
```
     if (u.ucreamed) {
```
```
         static NEARDATA char buf[39];
```
```
 
```

         Sprintf(buf, "wiping off your %s", body_part(FACE));

         set_occupation(wipeoff, buf, 0);

         /* Not totally correct; what if they change back after now

          * but before they're finished wiping?

```
          */
```
```
         return 1;
```
```
     }
```

     Your("%s is already clean.", body_part(FACE));

```
     return 1;
```
```
 }
```
```
 
```

set_wounded_legs

```
 void
```
```
 set_wounded_legs(side, timex)
```
```
 register long side;
```
```
 register int timex;
```
```
 {
```
```
     /* KMH -- STEED
```

      * If you are riding, your steed gets the wounded legs instead.

      * You still call this function, but don't lose hp.

      * Caller is also responsible for adjusting messages.

```
      */
```
```
 
```
```
     if (!Wounded_legs) {
```
```
         ATEMP(A_DEX)--;
```
```
         context.botl = 1;
```
```
     }
```
```
 
```

     if (!Wounded_legs || (HWounded_legs & TIMEOUT))

```
         HWounded_legs = timex;
```
```
     EWounded_legs = side;
```
```
     (void) encumber_msg();
```
```
 }
```
```
 
```

heal_legs

```
 void
```
```
 heal_legs()
```
```
 {
```
```
     if (Wounded_legs) {
```
```
         if (ATEMP(A_DEX) < 0) {
```
```
             ATEMP(A_DEX)++;
```
```
             context.botl = 1;
```
```
         }
```
```
 
```
```
         if (!u.usteed) {
```

             const char *legs = body_part(LEG);

```
 
```

             if ((EWounded_legs & BOTH_SIDES) == BOTH_SIDES)

                 legs = makeplural(legs);

             /* this used to say "somewhat better" but that was

                misleading since legs are being fully healed */

             Your("%s %s better.", legs, vtense(legs, "feel"));

```
         }
```
```
 
```

         HWounded_legs = EWounded_legs = 0;

```
 
```

         /* Wounded_legs reduces carrying capacity, so we want

            an encumbrance check when they're healed.  However,

            while dismounting, first steed's legs get healed,

            then hero is dropped to floor and a new encumbrance

            check is made [in dismount_steed()].  So don't give

            encumbrance feedback during the dismount stage

            because it could seem to be shown out of order and

            it might be immediately contradicted [able to carry

            more when steed becomes healthy, then possible floor

            feedback, then able to carry less when back on foot]. */

```
         if (!in_steed_dismounting)
```
```
             (void) encumber_msg();
```
```
     }
```
```
 }
```
```
 
```
```
 /*do.c*/
```