/*      $OpenBSD: hack.invent.c,v 1.14 2016/01/09 21:54:11 mestre Exp $ */

/*
 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
 * Amsterdam
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Stichting Centrum voor Wiskunde en
 * Informatica, nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>

#include "hack.h"

extern struct obj zeroobj;
extern char morc;
extern char quitchars[];

#ifndef NOWORM
extern struct wseg *wsegs[32];
#endif /* NOWORM */

#define NOINVSYM        '#'

static int lastinvnr = 51;      /* 0 ... 51 */

static void assigninvlet(struct obj *);
static char obj_to_let(struct obj *);
static char *xprname(struct obj *, char);
static void doinv(char *);
static int  merged(struct obj *, struct obj *, int);


static void
assigninvlet(struct obj *otmp)
{
        boolean inuse[52];
        int i;
        struct obj *obj;

        for(i = 0; i < 52; i++) inuse[i] = FALSE;
        for(obj = invent; obj; obj = obj->nobj) if(obj != otmp) {
                i = obj->invlet;
                if('a' <= i && i <= 'z') inuse[i - 'a'] = TRUE; else
                if('A' <= i && i <= 'Z') inuse[i - 'A' + 26] = TRUE;
                if(i == otmp->invlet) otmp->invlet = 0;
        }
        if((i = otmp->invlet) &&
            (('a' <= i && i <= 'z') || ('A' <= i && i <= 'Z')))
                return;
        for(i = lastinvnr+1; i != lastinvnr; i++) {
                if(i == 52) { i = -1; continue; }
                if(!inuse[i]) break;
        }
        otmp->invlet = (inuse[i] ? NOINVSYM :
                        (i < 26) ? ('a'+i) : ('A'+i-26));
        lastinvnr = i;
}

struct obj *
addinv(struct obj *obj)
{
        struct obj *otmp;

        /* merge or attach to end of chain */
        if(!invent) {
                invent = obj;
                otmp = 0;
        } else
        for(otmp = invent; /* otmp */; otmp = otmp->nobj) {
                if(merged(otmp, obj, 0))
                        return(otmp);
                if(!otmp->nobj) {
                        otmp->nobj = obj;
                        break;
                }
        }
        obj->nobj = 0;

        if(flags.invlet_constant) {
                assigninvlet(obj);
                /*
                 * The ordering of the chain is nowhere significant
                 * so in case you prefer some other order than the
                 * historical one, change the code below.
                 */
                if(otmp) {      /* find proper place in chain */
                        otmp->nobj = 0;
                        if((invent->invlet ^ 040) > (obj->invlet ^ 040)) {
                                obj->nobj = invent;
                                invent = obj;
                        } else
                        for(otmp = invent; ; otmp = otmp->nobj) {
                            if(!otmp->nobj ||
                                (otmp->nobj->invlet ^ 040) > (obj->invlet ^ 040)){
                                obj->nobj = otmp->nobj;
                                otmp->nobj = obj;
                                break;
                            }
                        }
                }
        }

        return(obj);
}

void
useup(struct obj *obj)
{
        if(obj->quan > 1){
                obj->quan--;
                obj->owt = weight(obj);
        } else {
                setnotworn(obj);
                freeinv(obj);
                obfree(obj, (struct obj *) 0);
        }
}

void
freeinv(struct obj *obj)
{
        struct obj *otmp;

        if(obj == invent)
                invent = invent->nobj;
        else {
                for(otmp = invent; otmp->nobj != obj; otmp = otmp->nobj)
                        if(!otmp->nobj) panic("freeinv");
                otmp->nobj = obj->nobj;
        }
}

/* destroy object in fobj chain (if unpaid, it remains on the bill) */
void
delobj(struct obj *obj)
{
        freeobj(obj);
        unpobj(obj);
        obfree(obj, (struct obj *) 0);
}

/* unlink obj from chain starting with fobj */
void
freeobj(struct obj *obj)
{
        struct obj *otmp;

        if(obj == fobj) fobj = fobj->nobj;
        else {
                for(otmp = fobj; otmp->nobj != obj; otmp = otmp->nobj)
                        if(!otmp) panic("error in freeobj");
                otmp->nobj = obj->nobj;
        }
}

/* Note: freegold throws away its argument! */
void
freegold(struct gold *gold)
{
        struct gold *gtmp;

        if(gold == fgold) fgold = gold->ngold;
        else {
                for(gtmp = fgold; gtmp->ngold != gold; gtmp = gtmp->ngold)
                        if(!gtmp) panic("error in freegold");
                gtmp->ngold = gold->ngold;
        }
        free(gold);
}

void
deltrap(struct trap *trap)
{
        struct trap *ttmp;

        if(trap == ftrap)
                ftrap = ftrap->ntrap;
        else {
                for(ttmp = ftrap; ttmp->ntrap != trap; ttmp = ttmp->ntrap) ;
                ttmp->ntrap = trap->ntrap;
        }
        free(trap);
}

struct wseg *m_atseg;

struct monst *
m_at(int x, int y)
{
        struct monst *mtmp;
#ifndef NOWORM
        struct wseg *wtmp;
#endif /* NOWORM */

        m_atseg = 0;
        for(mtmp = fmon; mtmp; mtmp = mtmp->nmon){
                if(mtmp->mx == x && mtmp->my == y)
                        return(mtmp);
#ifndef NOWORM
                if(mtmp->wormno){
                    for(wtmp = wsegs[mtmp->wormno]; wtmp; wtmp = wtmp->nseg)
                    if(wtmp->wx == x && wtmp->wy == y){
                        m_atseg = wtmp;
                        return(mtmp);
                    }
                }
#endif /* NOWORM */
        }
        return(0);
}

struct obj *
o_at(int x, int y)
{
        struct obj *otmp;

        for(otmp = fobj; otmp; otmp = otmp->nobj)
                if(otmp->ox == x && otmp->oy == y) return(otmp);
        return(0);
}

struct obj *
sobj_at(int n, int x, int y)
{
        struct obj *otmp;

        for(otmp = fobj; otmp; otmp = otmp->nobj)
                if(otmp->ox == x && otmp->oy == y && otmp->otyp == n)
                        return(otmp);
        return(0);
}

int
carried(struct obj *obj)
{
        struct obj *otmp;

        for(otmp = invent; otmp; otmp = otmp->nobj)
                if(otmp == obj) return(1);
        return(0);
}

boolean
carrying(int type)
{
        struct obj *otmp;

        for(otmp = invent; otmp; otmp = otmp->nobj)
                if(otmp->otyp == type)
                        return(TRUE);
        return(FALSE);
}

struct obj *
o_on(unsigned int id, struct obj *objchn)
{
        while(objchn) {
                if(objchn->o_id == id) return(objchn);
                objchn = objchn->nobj;
        }
        return(NULL);
}

struct trap *
t_at(int x, int y)
{
        struct trap *trap = ftrap;

        while(trap) {
                if(trap->tx == x && trap->ty == y) return(trap);
                trap = trap->ntrap;
        }
        return(NULL);
}

struct gold *
g_at(int x, int y)
{
        struct gold *gold = fgold;

        while(gold) {
                if(gold->gx == x && gold->gy == y) return(gold);
                gold = gold->ngold;
        }
        return(NULL);
}

/* make dummy object structure containing gold - for temporary use only */
struct obj *
mkgoldobj(long q)
{
        struct obj *otmp;

        otmp = newobj(0);
        /* should set o_id etc. but otmp will be freed soon */
        otmp->olet = '$';
        u.ugold -= q;
        OGOLD(otmp) = q;
        flags.botl = 1;
        return(otmp);
}

/*
 * getobj returns:
 *      struct obj *xxx:        object to do something with.
 *      (struct obj *) 0        error return: no object.
 *      &zeroobj                explicitly no object (as in w-).
 */
struct obj *
getobj(char *let, char *word)
{
        struct obj *otmp;
        char ilet,ilet1,ilet2;
        char buf[BUFSZ];
        char lets[BUFSZ];
        int foo = 0, foo2;
        char *bp = buf;
        xchar allowcnt = 0;     /* 0, 1 or 2 */
        boolean allowgold = FALSE;
        boolean allowall = FALSE;
        boolean allownone = FALSE;
        xchar foox = 0;
        long cnt;

        if(*let == '0') let++, allowcnt = 1;
        if(*let == '$') let++, allowgold = TRUE;
        if(*let == '#') let++, allowall = TRUE;
        if(*let == '-') let++, allownone = TRUE;
        if(allownone) *bp++ = '-';
        if(allowgold) *bp++ = '$';
        if(bp > buf && bp[-1] == '-') *bp++ = ' ';

        ilet = 'a';
        for(otmp = invent; otmp; otmp = otmp->nobj){
            if(!*let || strchr(let, otmp->olet)) {
                bp[foo++] = flags.invlet_constant ? otmp->invlet : ilet;

                /* ugly check: remove inappropriate things */
                if((!strcmp(word, "take off") &&
                    !(otmp->owornmask & (W_ARMOR - W_ARM2)))
                || (!strcmp(word, "wear") &&
                    (otmp->owornmask & (W_ARMOR | W_RING)))
                || (!strcmp(word, "wield") &&
                    (otmp->owornmask & W_WEP))) {
                        foo--;
                        foox++;
                }
            }
            if(ilet == 'z') ilet = 'A'; else ilet++;
        }
        bp[foo] = 0;
        if(foo == 0 && bp > buf && bp[-1] == ' ') *--bp = 0;
        (void) strlcpy(lets, bp, sizeof lets);  /* necessary since we destroy buf */
        if(foo > 5) {                   /* compactify string */
                foo = foo2 = 1;
                ilet2 = bp[0];
                ilet1 = bp[1];
                while ((ilet = bp[++foo2] = bp[++foo])) {
                        if(ilet == ilet1+1){
                                if(ilet1 == ilet2+1)
                                        bp[foo2 - 1] = ilet1 = '-';
                                else if(ilet2 == '-') {
                                        bp[--foo2] = ++ilet1;
                                        continue;
                                }
                        }
                        ilet2 = ilet1;
                        ilet1 = ilet;
                }
        }
        if(!foo && !allowall && !allowgold && !allownone) {
                pline("You don't have anything %sto %s.",
                        foox ? "else " : "", word);
                return(0);
        }
        for(;;) {
                if(!buf[0])
                        pline("What do you want to %s [*]? ", word);
                else
                        pline("What do you want to %s [%s or ?*]? ",
                                word, buf);

                cnt = 0;
                ilet = readchar();
                while(isdigit((unsigned char)ilet) && allowcnt) {
                        if (cnt < 100000000)
                            cnt = 10*cnt + (ilet - '0');
                        else
                            cnt = 999999999;
                        allowcnt = 2;   /* signal presence of cnt */
                        ilet = readchar();
                }
                if(isdigit((unsigned char)ilet)) {
                        pline("No count allowed with this command.");
                        continue;
                }
                if(strchr(quitchars,ilet))
                        return((struct obj *)0);
                if(ilet == '-') {
                        return(allownone ? &zeroobj : (struct obj *) 0);
                }
                if(ilet == '$') {
                        if(!allowgold){
                                pline("You cannot %s gold.", word);
                                continue;
                        }
                        if(!(allowcnt == 2 && cnt < u.ugold))
                                cnt = u.ugold;
                        return(mkgoldobj(cnt));
                }
                if(ilet == '?') {
                        doinv(lets);
                        if(!(ilet = morc)) continue;
                        /* he typed a letter (not a space) to more() */
                } else if(ilet == '*') {
                        doinv(NULL);
                        if(!(ilet = morc)) continue;
                        /* ... */
                }
                if(flags.invlet_constant) {
                        for(otmp = invent; otmp; otmp = otmp->nobj)
                                if(otmp->invlet == ilet) break;
                } else {
                        if(ilet >= 'A' && ilet <= 'Z') ilet += 'z'-'A'+1;
                        ilet -= 'a';
                        for(otmp = invent; otmp && ilet;
                                        ilet--, otmp = otmp->nobj) ;
                }
                if(!otmp) {
                        pline("You don't have that object.");
                        continue;
                }
                if(cnt < 0 || otmp->quan < cnt) {
                        pline("You don't have that many! [You have %u]"
                        , otmp->quan);
                        continue;
                }
                break;
        }
        if(!allowall && let && !strchr(let,otmp->olet)) {
                pline("That is a silly thing to %s.",word);
                return(0);
        }
        if(allowcnt == 2) {     /* cnt given */
                if(cnt == 0) return(0);
                if(cnt != otmp->quan) {
                        struct obj *obj;
                        obj = splitobj(otmp, (int) cnt);
                        if(otmp == uwep) setuwep(obj);
                }
        }
        return(otmp);
}

int
ckunpaid(struct obj *otmp)
{
        return( otmp->unpaid );
}

/* interactive version of getobj - used for Drop and Identify */
/* return the number of times fn was called successfully */
int
ggetobj(char *word, int (*fn)(struct obj *), int max)
{
        char buf[BUFSZ];
        char *ip;
        char sym;
        int oletct = 0, iletct = 0;
        boolean allflag = FALSE;
        char olets[20], ilets[20];
        int (*ckfn)(struct obj *) = NULL;
        xchar allowgold = (u.ugold && !strcmp(word, "drop")) ? 1 : 0;   /* BAH */

        if(!invent && !allowgold){
                pline("You have nothing to %s.", word);
                return(0);
        } else {
                struct obj *otmp = invent;
                int uflg = 0;

                if(allowgold) ilets[iletct++] = '$';
                ilets[iletct] = 0;
                while(otmp) {
                        if(!strchr(ilets, otmp->olet)){
                                ilets[iletct++] = otmp->olet;
                                ilets[iletct] = 0;
                        }
                        if(otmp->unpaid) uflg = 1;
                        otmp = otmp->nobj;
                }
                ilets[iletct++] = ' ';
                if(uflg) ilets[iletct++] = 'u';
                if(invent) ilets[iletct++] = 'a';
                ilets[iletct] = 0;
        }
        pline("What kinds of thing do you want to %s? [%s] ",
                word, ilets);
        getlin(buf);
        if(buf[0] == '\033') {
                clrlin();
                return(0);
        }
        ip = buf;
        olets[0] = 0;
        while ((sym = *ip++)) {
                if (sym == ' ')
                        continue;
                if (sym == '$') {
                        if (allowgold == 1)
                                (*fn)(mkgoldobj(u.ugold));
                        else if (!u.ugold)
                                pline("You have no gold.");
                        allowgold = 2;
                } else if (sym == 'a' || sym == 'A')
                        allflag = TRUE;
                else if (sym == 'u' || sym == 'U')
                        ckfn = ckunpaid;
                else if (strchr("!%?[()=*/\"0", sym)) {
                        if (!strchr(olets, sym)) {
                                olets[oletct++] = sym;
                                olets[oletct] = 0;
                        }
                }
                else pline("You don't have any %c's.", sym);
        }
        if (allowgold == 2 && !oletct)
                return(1);      /* he dropped gold (or at least tried to) */
        else
                return(askchain(invent, olets, allflag, fn, ckfn, max));
}

/*
 * Walk through the chain starting at objchn and ask for all objects
 * with olet in olets (if nonNULL) and satisfying ckfn (if nonNULL)
 * whether the action in question (i.e., fn) has to be performed.
 * If allflag then no questions are asked. Max gives the max nr of
 * objects to be treated. Return the number of objects treated.
 */
int
askchain(struct obj *objchn, char *olets, int allflag, int (*fn)(struct obj *),
    int (*ckfn)(struct obj *), int max)
{
        struct obj *otmp, *otmp2;
        char sym, ilet;
        int cnt = 0;

        ilet = 'a'-1;
        for(otmp = objchn; otmp; otmp = otmp2){
                if(ilet == 'z') ilet = 'A'; else ilet++;
                otmp2 = otmp->nobj;
                if(olets && *olets && !strchr(olets, otmp->olet)) continue;
                if(ckfn && !(*ckfn)(otmp)) continue;
                if(!allflag) {
                        pline("%s", xprname(otmp, ilet));
                        addtopl(" [nyaq]? ");
                        sym = readchar();
                }
                else    sym = 'y';

                switch(sym){
                case 'a':
                        allflag = 1;
                case 'y':
                        cnt += (*fn)(otmp);
                        if(--max == 0) goto ret;
                case 'n':
                default:
                        break;
                case 'q':
                        goto ret;
                }
        }
        pline(cnt ? "That was all." : "No applicable objects.");
ret:
        return(cnt);
}

/* should of course only be called for things in invent */
static char
obj_to_let(struct obj *obj)
{
        struct obj *otmp;
        char ilet;

        if(flags.invlet_constant)
                return(obj->invlet);
        ilet = 'a';
        for(otmp = invent; otmp && otmp != obj; otmp = otmp->nobj)
                if(++ilet > 'z') ilet = 'A';
        return(otmp ? ilet : NOINVSYM);
}

void
prinv(struct obj *obj)
{
        pline("%s", xprname(obj, obj_to_let(obj)));
}

static char *
xprname(struct obj *obj, char let)
{
        static char li[BUFSZ];

        (void) snprintf(li, sizeof li, "%c - %s.",
                flags.invlet_constant ? obj->invlet : let,
                doname(obj));
        return(li);
}

int
ddoinv(void)
{
        doinv(NULL);
        return(0);
}

/* called with 0 or "": all objects in inventory */
/* otherwise: all objects with (serial) letter in lets */
static void
doinv(char *lets)
{
        struct obj *otmp;
        char ilet;
        int ct = 0;
        char any[BUFSZ];

        morc = 0;               /* just to be sure */

        if(!invent){
                pline("Not carrying anything.");
                return;
        }

        cornline(0, NULL);
        ilet = 'a';
        for(otmp = invent; otmp; otmp = otmp->nobj) {
            if(flags.invlet_constant) ilet = otmp->invlet;
            if(!lets || !*lets || strchr(lets, ilet)) {
                    cornline(1, xprname(otmp, ilet));
                    any[ct++] = ilet;
            }
            if(!flags.invlet_constant) if(++ilet > 'z') ilet = 'A';
        }
        any[ct] = 0;
        cornline(2, any);
}

int
dotypeinv(void)                         /* free after Robert Viduya */
/* Changed to one type only, so he doesn't have to type cr */
{
    char c, ilet;
    char stuff[BUFSZ];
    int stct;
    struct obj *otmp;
    boolean billx = inshop() && doinvbill(0);
    boolean unpd = FALSE;

        if (!invent && !u.ugold && !billx) {
            pline ("You aren't carrying anything.");
            return(0);
        }

        stct = 0;
        if(u.ugold) stuff[stct++] = '$';
        stuff[stct] = 0;
        for(otmp = invent; otmp; otmp = otmp->nobj) {
            if (!strchr (stuff, otmp->olet)) {
                stuff[stct++] = otmp->olet;
                stuff[stct] = 0;
            }
            if(otmp->unpaid)
                unpd = TRUE;
        }
        if(unpd) stuff[stct++] = 'u';
        if(billx) stuff[stct++] = 'x';
        stuff[stct] = 0;

        if(stct > 1) {
            pline ("What type of object [%s] do you want an inventory of? ",
                stuff);
            c = readchar();
            if(strchr(quitchars,c)) return(0);
        } else
            c = stuff[0];

        if(c == '$')
            return(doprgold());

        if(c == 'x' || c == 'X') {
            if(billx)
                (void) doinvbill(1);
            else
                pline("No used-up objects on the shopping bill.");
            return(0);
        }

        if((c == 'u' || c == 'U') && !unpd) {
                pline("You are not carrying any unpaid objects.");
                return(0);
        }

        stct = 0;
        ilet = 'a';
        for (otmp = invent; otmp; otmp = otmp -> nobj) {
            if(flags.invlet_constant) ilet = otmp->invlet;
            if (c == otmp -> olet || (c == 'u' && otmp -> unpaid))
                stuff[stct++] = ilet;
            if(!flags.invlet_constant) if(++ilet > 'z') ilet = 'A';
        }
        stuff[stct] = '\0';
        if(stct == 0)
                pline("You have no such objects.");
        else
                doinv (stuff);

        return(0);
}

/* look at what is here */
int
dolook(void)
{
    struct obj *otmp, *otmp0;
    struct gold *gold;
    char *verb = Blind ? "feel" : "see";
    int ct = 0;

    if(!u.uswallow) {
        if(Blind) {
            pline("You try to feel what is lying here on the floor.");
            if(Levitation) {                            /* ab@unido */
                pline("You cannot reach the floor!");
                return(1);
            }
        }
        otmp0 = o_at(u.ux, u.uy);
        gold = g_at(u.ux, u.uy);
    }

    if(u.uswallow || (!otmp0 && !gold)) {
        pline("You %s no objects here.", verb);
        return(!!Blind);
    }

    cornline(0, "Things that are here:");
    for(otmp = otmp0; otmp; otmp = otmp->nobj) {
        if(otmp->ox == u.ux && otmp->oy == u.uy) {
            ct++;
            cornline(1, doname(otmp));
            if(Blind && otmp->otyp == DEAD_COCKATRICE && !uarmg) {
                pline("Touching the dead cockatrice is a fatal mistake ...");
                pline("You die ...");
                killer = "dead cockatrice";
                done("died");
            }
        }
    }

    if(gold) {
        char gbuf[30];

        (void) snprintf(gbuf, sizeof gbuf, "%ld gold piece%s",
                gold->amount, plur(gold->amount));
        if(!ct++)
            pline("You %s here %s.", verb, gbuf);
        else
            cornline(1, gbuf);
    }

    if(ct == 1 && !gold) {
        pline("You %s here %s.", verb, doname(otmp0));
        cornline(3, NULL);
    }
    if(ct > 1)
        cornline(2, NULL);
    return(!!Blind);
}

void
stackobj(struct obj *obj)
{
        struct obj *otmp = fobj;

        for(otmp = fobj; otmp; otmp = otmp->nobj) if(otmp != obj)
        if(otmp->ox == obj->ox && otmp->oy == obj->oy &&
                merged(obj,otmp,1))
                        return;
}

/* merge obj with otmp and delete obj if types agree */
static int
merged(struct obj *otmp, struct obj *obj, int lose)
{
        if(obj->otyp == otmp->otyp &&
          obj->unpaid == otmp->unpaid &&
          obj->spe == otmp->spe &&
          obj->dknown == otmp->dknown &&
          obj->cursed == otmp->cursed &&
          (strchr("%*?!", obj->olet) ||
            (obj->known == otmp->known &&
                (obj->olet == WEAPON_SYM && obj->otyp < BOOMERANG)))) {
                otmp->quan += obj->quan;
                otmp->owt += obj->owt;
                if(lose) freeobj(obj);
                obfree(obj,otmp);       /* free(obj), bill->otmp */
                return(1);
        } else  return(0);
}

/*
 * Gold is no longer displayed; in fact, when you have a lot of money,
 * it may take a while before you have counted it all.
 * [Bug: d$ and pickup still tell you how much it was.]
 */
extern int (*occupation)(void);
extern char *occtxt;
static long goldcounted;

int
countgold(void)
{
        if((goldcounted += 100*(u.ulevel + 1)) >= u.ugold) {
                long eps = 0;
                if(!rn2(2)) eps = rnd((int) (u.ugold/100 + 1));
                pline("You probably have about %ld gold pieces.",
                        u.ugold + eps);
                return(0);      /* done */
        }
        return(1);              /* continue */
}

int
doprgold(void)
{
        if(!u.ugold)
                pline("You do not carry any gold.");
        else if(u.ugold <= 500)
                pline("You are carrying %ld gold pieces.", u.ugold);
        else {
                pline("You sit down in order to count your gold pieces.");
                goldcounted = 500;
                occupation = countgold;
                occtxt = "counting your gold";
        }
        return(1);
}

/* --- end of gold counting section --- */

int
doprwep(void)
{
        if(!uwep) pline("You are empty handed.");
        else prinv(uwep);
        return(0);
}

int
doprarm(void)
{
        if(!uarm && !uarmg && !uarms && !uarmh)
                pline("You are not wearing any armor.");
        else {
                char lets[6];
                int ct = 0;

                if(uarm) lets[ct++] = obj_to_let(uarm);
                if(uarm2) lets[ct++] = obj_to_let(uarm2);
                if(uarmh) lets[ct++] = obj_to_let(uarmh);
                if(uarms) lets[ct++] = obj_to_let(uarms);
                if(uarmg) lets[ct++] = obj_to_let(uarmg);
                lets[ct] = 0;
                doinv(lets);
        }
        return(0);
}

int
doprring(void)
{
        if(!uleft && !uright)
                pline("You are not wearing any rings.");
        else {
                char lets[3];
                int ct = 0;

                if(uleft) lets[ct++] = obj_to_let(uleft);
                if(uright) lets[ct++] = obj_to_let(uright);
                lets[ct] = 0;
                doinv(lets);
        }
        return(0);
}