/*      $NetBSD: hack.mon.c,v 1.14 2011/08/07 06:03:45 dholland 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 <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.mon.c,v 1.14 2011/08/07 06:03:45 dholland Exp $");
#endif                          /* not lint */

#include <stdlib.h>
#include "hack.h"
#include "extern.h"
#include "hack.mfndpos.h"

static int warnlevel;   /* used by movemon and dochugw */
static long lastwarntime;
static int lastwarnlev;

static const char *const warnings[] = {
        "white", "pink", "red", "ruby", "purple", "black"
};

static int dochugw(struct monst *);
static void mpickgold(struct monst *);
static void mpickgems(struct monst *);
static void dmonsfree(void);
static int ishuman(struct monst *);

void
movemon(void)
{
        struct monst   *mtmp;
        int             fr;

        warnlevel = 0;

        while (1) {
                /* find a monster that we haven't treated yet */
                /*
                 * note that mtmp or mtmp->nmon might get killed while mtmp
                 * moves, so we cannot just walk down the chain (even new
                 * monsters might get created!)
                 */
                for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
                        if (mtmp->mlstmv < moves)
                                goto next_mon;
                /* treated all monsters */
                break;

next_mon:
                mtmp->mlstmv = moves;

                /* most monsters drown in pools */
                {
                        boolean         inpool, iseel;

                        inpool = (levl[mtmp->mx][mtmp->my].typ == POOL);
                        iseel = (mtmp->data->mlet == ';');
                        if (inpool && !iseel) {
                                if (cansee(mtmp->mx, mtmp->my))
                                        pline("%s drowns.", Monnam(mtmp));
                                mondead(mtmp);
                                continue;
                        }
                        /* but eels have a difficult time outside */
                        if (iseel && !inpool) {
                                if (mtmp->mhp > 1)
                                        mtmp->mhp--;
                                mtmp->mflee = 1;
                                mtmp->mfleetim += 2;
                        }
                }
                if (mtmp->mblinded && !--mtmp->mblinded)
                        mtmp->mcansee = 1;
                if (mtmp->mfleetim && !--mtmp->mfleetim)
                        mtmp->mflee = 0;
                if (mtmp->mimic)
                        continue;
                if (mtmp->mspeed != MSLOW || !(moves % 2)) {
                        /* continue if the monster died fighting */
                        fr = -1;
                        if (Conflict && cansee(mtmp->mx, mtmp->my)
                            && (fr = fightm(mtmp)) == 2)
                                continue;
                        if (fr < 0 && dochugw(mtmp))
                                continue;
                }
                if (mtmp->mspeed == MFAST && dochugw(mtmp))
                        continue;
        }

        warnlevel -= u.ulevel;
        if (warnlevel >= SIZE(warnings))
                warnlevel = SIZE(warnings) - 1;
        if (warnlevel >= 0)
                if (warnlevel > lastwarnlev || moves > lastwarntime + 5) {
                        const char           *rr;
                        switch (Warning & (LEFT_RING | RIGHT_RING)) {
                        case LEFT_RING:
                                rr = "Your left ring glows";
                                break;
                        case RIGHT_RING:
                                rr = "Your right ring glows";
                                break;
                        case LEFT_RING | RIGHT_RING:
                                rr = "Both your rings glow";
                                break;
                        default:
                                rr = "Your fingertips glow";
                                break;
                        }
                        pline("%s %s!", rr, warnings[warnlevel]);
                        lastwarntime = moves;
                        lastwarnlev = warnlevel;
                }
        dmonsfree();            /* remove all dead monsters */
}

void
justswld(struct monst *mtmp, const char *name)
{

        mtmp->mx = u.ux;
        mtmp->my = u.uy;
        u.ustuck = mtmp;
        pmon(mtmp);
        kludge("%s swallows you!", name);
        more();
        seeoff(1);
        u.uswallow = 1;
        u.uswldtim = 0;
        swallowed();
}

void
youswld(struct monst *mtmp, int dam, unsigned int die, const char *name)
{
        if (mtmp != u.ustuck)
                return;
        kludge("%s digests you!", name);
        u.uhp -= dam;
        if (u.uswldtim++ >= die) {      /* a3 */
                pline("It totally digests you!");
                u.uhp = -1;
        }
        if (u.uhp < 1)
                done_in_by(mtmp);
#if 0
        flags.botlx = 1;                /* should we show status line ? */
#endif
}

static int
dochugw(struct monst *mtmp)
{
        int x = mtmp->mx;
        int y = mtmp->my;
        int dead = dochug(mtmp);
        int dd;

        if (!dead)              /* monster still alive */
                if (Warning)
                        if (!mtmp->mpeaceful)
                                if (mtmp->data->mlevel > warnlevel)
                                        if ((dd = dist(mtmp->mx, mtmp->my)) < dist(x, y))
                                                if (dd < 100)
                                                        if (!canseemon(mtmp))
                                                                warnlevel = mtmp->data->mlevel;
        return (dead);
}

/* returns 1 if monster died moving, 0 otherwise */
int
dochug(struct monst *mtmp)
{
        const struct permonst *mdat;
        int tmp = 0, nearby, scared;

        if (mtmp->cham && !rn2(6))
                (void) newcham(mtmp, &mons[dlevel + 14 + rn2(CMNUM - 14 - dlevel)]);
        mdat = mtmp->data;
        if (mdat->mlevel < 0)
                panic("bad monster %c (%d)", mdat->mlet, mdat->mlevel);

        /* regenerate monsters */
        if ((!(moves % 20) || strchr(MREGEN, mdat->mlet)) &&
            mtmp->mhp < mtmp->mhpmax)
                mtmp->mhp++;

        if (mtmp->mfroz)
                return (0);     /* frozen monsters don't do anything */

        if (mtmp->msleep) {
                /* wake up, or get out of here. */
                /* ettins are hard to surprise */
                /* Nymphs and Leprechauns do not easily wake up */
                if (cansee(mtmp->mx, mtmp->my) &&
                    (!Stealth || (mdat->mlet == 'e' && rn2(10))) &&
                    (!strchr("NL", mdat->mlet) || !rn2(50)) &&
                    (Aggravate_monster || strchr("d1", mdat->mlet)
                     || (!rn2(7) && !mtmp->mimic)))
                        mtmp->msleep = 0;
                else
                        return (0);
        }
        /* not frozen or sleeping: wipe out texts written in the dust */
        wipe_engr_at(mtmp->mx, mtmp->my, 1);

        /* confused monsters get unconfused with small probability */
        if (mtmp->mconf && !rn2(50))
                mtmp->mconf = 0;

        /* some monsters teleport */
        if (mtmp->mflee && strchr("tNL", mdat->mlet) && !rn2(40)) {
                rloc(mtmp);
                return (0);
        }
        if (mdat->mmove < rnd(6))
                return (0);

        /* fleeing monsters might regain courage */
        if (mtmp->mflee && !mtmp->mfleetim
            && mtmp->mhp == mtmp->mhpmax && !rn2(25))
                mtmp->mflee = 0;

        nearby = (dist(mtmp->mx, mtmp->my) < 3);
        scared = (nearby && (sengr_at("Elbereth", u.ux, u.uy) ||
                             sobj_at(SCR_SCARE_MONSTER, u.ux, u.uy)));
        if (scared && !mtmp->mflee) {
                mtmp->mflee = 1;
                mtmp->mfleetim = (rn2(7) ? rnd(10) : rnd(100));
        }
        if (!nearby ||
            mtmp->mflee ||
            mtmp->mconf ||
            (mtmp->minvis && !rn2(3)) ||
            (strchr("BIuy", mdat->mlet) && !rn2(4)) ||
            (mdat->mlet == 'L' && !u.ugold && (mtmp->mgold || rn2(2))) ||
            (!mtmp->mcansee && !rn2(4)) ||
            mtmp->mpeaceful
                ) {
                tmp = m_move(mtmp, 0);  /* 2: monster died moving */
                if (tmp == 2 || (tmp && mdat->mmove <= 12))
                        return (tmp == 2);
        }
        if (!strchr("Ea", mdat->mlet) && nearby &&
            !mtmp->mpeaceful && u.uhp > 0 && !scared) {
                if (mhitu(mtmp))
                        return (1);     /* monster died (e.g. 'y' or 'F') */
        }
        /* extra movement for fast monsters */
        if (mdat->mmove - 12 > rnd(12))
                tmp = m_move(mtmp, 1);
        return (tmp == 2);
}

int
m_move(struct monst *mtmp, int after)
{
        struct monst   *mtmp2;
        int             nx, ny, omx, omy, appr, nearer, cnt, i, j;
        xchar           gx, gy, nix, niy, chcnt;
        schar           chi;
        boolean         likegold = 0, likegems = 0, likeobjs = 0;
        char            msym = mtmp->data->mlet;
        schar           mmoved = 0;     /* not strictly nec.: chi >= 0 will
                                         * do */
        coord           poss[9];
        int             info[9];

        if (mtmp->mfroz || mtmp->msleep)
                return (0);
        if (mtmp->mtrapped) {
                i = mintrap(mtmp);
                if (i == 2)
                        return (2);     /* he died */
                if (i == 1)
                        return (0);     /* still in trap, so didnt move */
        }
        if (mtmp->mhide && o_at(mtmp->mx, mtmp->my) && rn2(10))
                return (0);     /* do not leave hiding place */

#ifndef NOWORM
        if (mtmp->wormno)
                goto not_special;
#endif  /* NOWORM */

        /* my dog gets a special treatment */
        if (mtmp->mtame) {
                return (dog_move(mtmp, after));
        }
        /* likewise for shopkeeper */
        if (mtmp->isshk) {
                mmoved = shk_move(mtmp);
                if (mmoved >= 0)
                        goto postmov;
                mmoved = 0;     /* follow player outside shop */
        }
        /* and for the guard */
        if (mtmp->isgd) {
                mmoved = gd_move();
                goto postmov;
        }
        /*
         * teleport if that lies in our nature ('t') or when badly wounded
         * ('1')
         */
        if ((msym == 't' && !rn2(5))
            || (msym == '1' && (mtmp->mhp < 7 || (!xdnstair && !rn2(5))
                                || levl[u.ux][u.uy].typ == STAIRS))) {
                if (mtmp->mhp < 7 || (msym == 't' && rn2(2)))
                        rloc(mtmp);
                else
                        mnexto(mtmp);
                mmoved = 1;
                goto postmov;
        }
        /* spit fire ('D') or use a wand ('1') when appropriate */
        if (strchr("D1", msym))
                inrange(mtmp);

        if (msym == 'U' && !mtmp->mcan && canseemon(mtmp) &&
            mtmp->mcansee && rn2(5)) {
                if (!Confusion)
                        pline("%s's gaze has confused you!", Monnam(mtmp));
                else
                        pline("You are getting more and more confused.");
                if (rn2(3))
                        mtmp->mcan = 1;
                Confusion += d(3, 4);   /* timeout */
        }
not_special:
        if (!mtmp->mflee && u.uswallow && u.ustuck != mtmp)
                return (1);
        appr = 1;
        if (mtmp->mflee)
                appr = -1;
        if (mtmp->mconf || Invis || !mtmp->mcansee ||
            (strchr("BIy", msym) && !rn2(3)))
                appr = 0;
        omx = mtmp->mx;
        omy = mtmp->my;
        gx = u.ux;
        gy = u.uy;
        if (msym == 'L' && appr == 1 && mtmp->mgold > u.ugold)
                appr = -1;

        /*
         * random criterion for 'smell' or track finding ability should use
         * mtmp->msmell or sth
         */
        if (msym == '@' ||
            ('a' <= msym && msym <= 'z')) {
                coord          *cp;
                schar           mroom;
                mroom = inroom(omx, omy);
                if (mroom < 0 || mroom != inroom(u.ux, u.uy)) {
                        cp = gettrack(omx, omy);
                        if (cp) {
                                gx = cp->x;
                                gy = cp->y;
                        }
                }
        }
        /* look for gold or jewels nearby */
        likegold = (strchr("LOD", msym) != NULL);
        likegems = (strchr("ODu", msym) != NULL);
        likeobjs = mtmp->mhide;
#define SRCHRADIUS      25
        {
                xchar           mind = SRCHRADIUS;      /* not too far away */
                int             dd;
                if (likegold) {
                        struct gold    *gold;
                        for (gold = fgold; gold; gold = gold->ngold)
                                if ((dd = DIST(omx, omy, gold->gx, gold->gy)) < mind) {
                                        mind = dd;
                                        gx = gold->gx;
                                        gy = gold->gy;
                                }
                }
                if (likegems || likeobjs) {
                        struct obj     *otmp;
                        for (otmp = fobj; otmp; otmp = otmp->nobj)
                                if (likeobjs || otmp->olet == GEM_SYM)
                                        if (msym != 'u' ||
                                            objects[otmp->otyp].g_val != 0)
                                                if ((dd = DIST(omx, omy, otmp->ox, otmp->oy)) < mind) {
                                                        mind = dd;
                                                        gx = otmp->ox;
                                                        gy = otmp->oy;
                                                }
                }
                if (mind < SRCHRADIUS && appr == -1) {
                        if (dist(omx, omy) < 10) {
                                gx = u.ux;
                                gy = u.uy;
                        } else
                                appr = 1;
                }
        }
        nix = omx;
        niy = omy;
        cnt = mfndpos(mtmp, poss, info,
                      msym == 'u' ? NOTONL :
                  (msym == '@' || msym == '1') ? (ALLOW_SSM | ALLOW_TRAPS) :
                      strchr(UNDEAD, msym) ? NOGARLIC : ALLOW_TRAPS);
        /* ALLOW_ROCK for some monsters ? */
        chcnt = 0;
        chi = -1;
        for (i = 0; i < cnt; i++) {
                nx = poss[i].x;
                ny = poss[i].y;
                for (j = 0; j < MTSZ && j < cnt - 1; j++)
                        if (nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
                                if (rn2(4 * (cnt - j)))
                                        goto nxti;
#ifdef STUPID
                /* some stupid compilers think that this is too complicated */
                {
                        int             d1 = DIST(nx, ny, gx, gy);
                        int             d2 = DIST(nix, niy, gx, gy);
                        nearer = (d1 < d2);
                }
#else
                nearer = (DIST(nx, ny, gx, gy) < DIST(nix, niy, gx, gy));
#endif  /* STUPID */
                if ((appr == 1 && nearer) || (appr == -1 && !nearer) ||
                    !mmoved ||
                    (!appr && !rn2(++chcnt))) {
                        nix = nx;
                        niy = ny;
                        chi = i;
                        mmoved = 1;
                }
nxti:           ;
        }
        if (mmoved) {
                if (info[chi] & ALLOW_M) {
                        mtmp2 = m_at(nix, niy);
                        if (mtmp2 == NULL)
                                panic("error in m_move");
                        if (hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
                            hitmm(mtmp2, mtmp) == 2)
                                return (2);
                        return (0);
                }
                if (info[chi] & ALLOW_U) {
                        (void) hitu(mtmp, d(mtmp->data->damn, mtmp->data->damd) + 1);
                        return (0);
                }
                mtmp->mx = nix;
                mtmp->my = niy;
                for (j = MTSZ - 1; j > 0; j--)
                        mtmp->mtrack[j] = mtmp->mtrack[j - 1];
                mtmp->mtrack[0].x = omx;
                mtmp->mtrack[0].y = omy;
#ifndef NOWORM
                if (mtmp->wormno)
                        worm_move(mtmp);
#endif  /* NOWORM */
        } else {
                if (msym == 'u' && rn2(2)) {
                        rloc(mtmp);
                        return (0);
                }
#ifndef NOWORM
                if (mtmp->wormno)
                        worm_nomove(mtmp);
#endif  /* NOWORM */
        }
postmov:
        if (mmoved == 1) {
                if (mintrap(mtmp) == 2) /* he died */
                        return (2);
                if (likegold)
                        mpickgold(mtmp);
                if (likegems)
                        mpickgems(mtmp);
                if (mtmp->mhide)
                        mtmp->mundetected = 1;
        }
        pmon(mtmp);
        return (mmoved);
}

static void
mpickgold(struct monst *mtmp)
{
        struct gold    *gold;
        while ((gold = g_at(mtmp->mx, mtmp->my)) != NULL) {
                mtmp->mgold += gold->amount;
                freegold(gold);
                if (levl[mtmp->mx][mtmp->my].scrsym == '$')
                        newsym(mtmp->mx, mtmp->my);
        }
}

static void
mpickgems(struct monst *mtmp)
{
        struct obj     *otmp;
        for (otmp = fobj; otmp; otmp = otmp->nobj)
                if (otmp->olet == GEM_SYM)
                        if (otmp->ox == mtmp->mx && otmp->oy == mtmp->my)
                                if (mtmp->data->mlet != 'u' || objects[otmp->otyp].g_val != 0) {
                                        freeobj(otmp);
                                        mpickobj(mtmp, otmp);
                                        if (levl[mtmp->mx][mtmp->my].scrsym == GEM_SYM)
                                                newsym(mtmp->mx, mtmp->my);     /* %% */
                                        return; /* pick only one object */
                                }
}

/* return number of acceptable neighbour positions */
int
mfndpos(struct monst *mon, coord poss[9], int info[9], int flag)
{
        int             x, y, nx, ny, cnt = 0, ntyp;
        struct monst   *mtmp;
        int             nowtyp;
        boolean         pool;

        x = mon->mx;
        y = mon->my;
        nowtyp = levl[x][y].typ;

        pool = (mon->data->mlet == ';');
nexttry:                        /* eels prefer the water, but if there is no
                                 * water nearby, they will crawl over land */
        if (mon->mconf) {
                flag |= ALLOW_ALL;
                flag &= ~NOTONL;
        }
        for (nx = x - 1; nx <= x + 1; nx++)
                for (ny = y - 1; ny <= y + 1; ny++)
                        if (nx != x || ny != y)
                                if (isok(nx, ny))
                                        if (!IS_ROCK(ntyp = levl[nx][ny].typ))
                                                if (!(nx != x && ny != y && (nowtyp == DOOR || ntyp == DOOR)))
                                                        if ((ntyp == POOL) == pool) {
                                                                info[cnt] = 0;
                                                                if (nx == u.ux && ny == u.uy) {
                                                                        if (!(flag & ALLOW_U))
                                                                                continue;
                                                                        info[cnt] = ALLOW_U;
                                                                } else if ((mtmp = m_at(nx, ny)) != NULL) {
                                                                        if (!(flag & ALLOW_M))
                                                                                continue;
                                                                        info[cnt] = ALLOW_M;
                                                                        if (mtmp->mtame) {
                                                                                if (!(flag & ALLOW_TM))
                                                                                        continue;
                                                                                info[cnt] |= ALLOW_TM;
                                                                        }
                                                                }
                                                                if (sobj_at(CLOVE_OF_GARLIC, nx, ny)) {
                                                                        if (flag & NOGARLIC)
                                                                                continue;
                                                                        info[cnt] |= NOGARLIC;
                                                                }
                                                                if (sobj_at(SCR_SCARE_MONSTER, nx, ny) ||
                                                                    (!mon->mpeaceful && sengr_at("Elbereth", nx, ny))) {
                                                                        if (!(flag & ALLOW_SSM))
                                                                                continue;
                                                                        info[cnt] |= ALLOW_SSM;
                                                                }
                                                                if (sobj_at(ENORMOUS_ROCK, nx, ny)) {
                                                                        if (!(flag & ALLOW_ROCK))
                                                                                continue;
                                                                        info[cnt] |= ALLOW_ROCK;
                                                                }
                                                                if (!Invis && online(nx, ny)) {
                                                                        if (flag & NOTONL)
                                                                                continue;
                                                                        info[cnt] |= NOTONL;
                                                                }
                                                                /*
                                                                 * we cannot
                                                                 * avoid
                                                                 * traps of
                                                                 * an unknown
                                                                 * kind
                                                                 */
                                                                {
                                                                        struct trap    *ttmp = t_at(nx, ny);
                                                                        int             tt;
                                                                        if (ttmp) {
                                                                                tt = 1 << ttmp->ttyp;
                                                                                if (mon->mtrapseen & tt) {
                                                                                        if (!(flag & tt))
                                                                                                continue;
                                                                                        info[cnt] |= tt;
                                                                                }
                                                                        }
                                                                }
                                                                poss[cnt].x = nx;
                                                                poss[cnt].y = ny;
                                                                cnt++;
                                                        }
        if (!cnt && pool && nowtyp != POOL) {
                pool = FALSE;
                goto nexttry;
        }
        return (cnt);
}

int
dist(int x, int y)
{
        return ((x - u.ux) * (x - u.ux) + (y - u.uy) * (y - u.uy));
}

void
poisoned(const char *string, const char *pname)
{
        int             i;

        if (Blind)
                pline("It was poisoned.");
        else
                pline("The %s was poisoned!", string);
        if (Poison_resistance) {
                pline("The poison doesn't seem to affect you.");
                return;
        }
        i = rn2(10);
        if (i == 0) {
                u.uhp = -1;
                pline("I am afraid the poison was deadly ...");
        } else if (i <= 5) {
                losestr(rn1(3, 3));
        } else {
                losehp(rn1(10, 6), pname);
        }
        if (u.uhp < 1) {
                killer = pname;
                done("died");
        }
}

void
mondead(struct monst *mtmp)
{
        relobj(mtmp, 1);
        unpmon(mtmp);
        relmon(mtmp);
        unstuck(mtmp);
        if (mtmp->isshk)
                shkdead(mtmp);
        if (mtmp->isgd)
                gddead();
#ifndef NOWORM
        if (mtmp->wormno)
                wormdead(mtmp);
#endif  /* NOWORM */
        monfree(mtmp);
}

/* called when monster is moved to larger structure */
void
replmon(struct monst *mtmp, struct monst *mtmp2)
{
        relmon(mtmp);
        monfree(mtmp);
        mtmp2->nmon = fmon;
        fmon = mtmp2;
        if (u.ustuck == mtmp)
                u.ustuck = mtmp2;
        if (mtmp2->isshk)
                replshk(mtmp, mtmp2);
        if (mtmp2->isgd)
                replgd(mtmp, mtmp2);
}

void
relmon(struct monst *mon)
{
        struct monst   *mtmp;

        if (mon == fmon)
                fmon = fmon->nmon;
        else {
                for (mtmp = fmon; mtmp->nmon != mon; mtmp = mtmp->nmon);
                mtmp->nmon = mon->nmon;
        }
}

/*
 * we do not free monsters immediately, in order to have their name available
 * shortly after their demise
 */
static struct monst *fdmon;     /* chain of dead monsters, need not to be
                                 * saved */

void
monfree(struct monst *mtmp)
{
        mtmp->nmon = fdmon;
        fdmon = mtmp;
}

static void
dmonsfree(void)
{
        struct monst   *mtmp;
        while ((mtmp = fdmon) != NULL) {
                fdmon = mtmp->nmon;
                free(mtmp);
        }
}

void
unstuck(struct monst *mtmp)
{
        if (u.ustuck == mtmp) {
                if (u.uswallow) {
                        u.ux = mtmp->mx;
                        u.uy = mtmp->my;
                        u.uswallow = 0;
                        setsee();
                        docrt();
                }
                u.ustuck = 0;
        }
}

void
killed(struct monst *mtmp)
{
#ifdef lint
#define NEW_SCORING
#endif  /* lint */
        int             tmp, nk, x, y;
        const struct permonst *mdat;

        if (mtmp->cham)
                mtmp->data = PM_CHAMELEON;
        mdat = mtmp->data;
        if (Blind)
                pline("You destroy it!");
        else {
                pline("You destroy %s!",
                      mtmp->mtame ? amonnam(mtmp, "poor") : monnam(mtmp));
        }
        if (u.umconf) {
                if (!Blind)
                        pline("Your hands stop glowing blue.");
                u.umconf = 0;
        }
        /* count killed monsters */
#define MAXMONNO        100
        nk = 1;                 /* in case we cannot find it in mons */
        tmp = mdat - mons;      /* strchr in mons array (if not 'd', '@', ...) */
        if (tmp >= 0 && tmp < CMNUM + 2) {
                u.nr_killed[tmp]++;
                if ((nk = u.nr_killed[tmp]) > MAXMONNO &&
                    !strchr(fut_geno, mdat->mlet))
                        charcat(fut_geno, mdat->mlet);
        }
        /* punish bad behaviour */
        if (mdat->mlet == '@')
                Telepat = 0, u.uluck -= 2;
        if (mtmp->mpeaceful || mtmp->mtame)
                u.uluck--;
        if (mdat->mlet == 'u')
                u.uluck -= 5;
        if ((int) u.uluck < LUCKMIN)
                u.uluck = LUCKMIN;

        /* give experience points */
        tmp = 1 + mdat->mlevel * mdat->mlevel;
        if (mdat->ac < 3)
                tmp += 2 * (7 - mdat->ac);
        if (strchr("AcsSDXaeRTVWU&In:P", mdat->mlet))
                tmp += 2 * mdat->mlevel;
        if (strchr("DeV&P", mdat->mlet))
                tmp += (7 * mdat->mlevel);
        if (mdat->mlevel > 6)
                tmp += 50;
        if (mdat->mlet == ';')
                tmp += 1000;

#ifdef NEW_SCORING
        /*
         * ------- recent addition: make nr of points decrease when this is
         * not the first of this kind
         */
        {
                int             ul = u.ulevel;
                int             ml = mdat->mlevel;
                int tmp2;

                if (ul < 14)    /* points are given based on present and
                                 * future level */
                        for (tmp2 = 0; !tmp2 || ul + tmp2 <= ml; tmp2++)
                                if (u.uexp + 1 + (tmp + ((tmp2 <= 0) ? 0 : 4 << (tmp2 - 1))) / nk
                                    >= 10 * pow((unsigned) (ul - 1)))
                                        if (++ul == 14)
                                                break;

                tmp2 = ml - ul - 1;
                tmp = (tmp + ((tmp2 < 0) ? 0 : 4 << tmp2)) / nk;
                if (!tmp)
                        tmp = 1;
        }
        /* note: ul is not necessarily the future value of u.ulevel */
        /* ------- end of recent valuation change ------- */
#endif  /* NEW_SCORING */

        more_experienced(tmp, 0);
        flags.botl = 1;
        while (u.ulevel < 14 && u.uexp >= newuexp()) {
                pline("Welcome to experience level %u.", ++u.ulevel);
                tmp = rnd(10);
                if (tmp < 3)
                        tmp = rnd(10);
                u.uhpmax += tmp;
                u.uhp += tmp;
                flags.botl = 1;
        }

        /* dispose of monster and make cadaver */
        x = mtmp->mx;
        y = mtmp->my;
        mondead(mtmp);
        tmp = mdat->mlet;
        if (tmp == 'm') {       /* he killed a minotaur, give him a wand of
                                 * digging */
                /* note: the dead minotaur will be on top of it! */
                mksobj_at(WAN_DIGGING, x, y);
                /* if(cansee(x,y)) atl(x,y,fobj->olet); */
                stackobj(fobj);
        } else
#ifndef NOWORM
        if (tmp == 'w') {
                mksobj_at(WORM_TOOTH, x, y);
                stackobj(fobj);
        } else
#endif  /* NOWORM */
        if (!letter(tmp) || (!strchr("mw", tmp) && !rn2(3)))
                tmp = 0;

        if (ACCESSIBLE(levl[x][y].typ)) /* might be mimic in wall or dead eel */
                if (x != u.ux || y != u.uy)     /* might be here after
                                                 * swallowed */
                        if (strchr("NTVm&", mdat->mlet) || rn2(5)) {
                                struct obj     *obj2 = mkobj_at(tmp, x, y);
                                if (cansee(x, y))
                                        atl(x, y, obj2->olet);
                                stackobj(obj2);
                        }
}

void
kludge(const char *str, const char *arg)
{
        if (Blind) {
                if (*str == '%')
                        pline(str, "It");
                else
                        pline(str, "it");
        } else
                pline(str, arg);
}

void
rescham(void)
{                               /* force all chameleons to become normal */
        struct monst   *mtmp;

        for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
                if (mtmp->cham) {
                        mtmp->cham = 0;
                        (void) newcham(mtmp, PM_CHAMELEON);
                }
}

/* make a chameleon look like a new monster */
/* returns 1 if the monster actually changed */
int
newcham(struct monst *mtmp, const struct permonst *mdat)
{
        int mhp, hpn, hpd;

        if (mdat == mtmp->data)
                return (0);     /* still the same monster */
#ifndef NOWORM
        if (mtmp->wormno)
                wormdead(mtmp); /* throw tail away */
#endif  /* NOWORM */
        if (u.ustuck == mtmp) {
                if (u.uswallow) {
                        u.uswallow = 0;
                        u.uswldtim = 0;
                        mnexto(mtmp);
                        docrt();
                        prme();
                }
                u.ustuck = 0;
        }
        hpn = mtmp->mhp;
        hpd = (mtmp->data->mlevel) * 8;
        if (!hpd)
                hpd = 4;
        mtmp->data = mdat;
        mhp = (mdat->mlevel) * 8;
        /* new hp: same fraction of max as before */
        mtmp->mhp = 2 + (hpn * mhp) / hpd;
        hpn = mtmp->mhpmax;
        mtmp->mhpmax = 2 + (hpn * mhp) / hpd;
        mtmp->minvis = (mdat->mlet == 'I') ? 1 : 0;
#ifndef NOWORM
        if (mdat->mlet == 'w' && getwn(mtmp))
                initworm(mtmp);
        /* perhaps we should clear mtmp->mtame here? */
#endif  /* NOWORM */
        unpmon(mtmp);           /* necessary for 'I' and to force pmon */
        pmon(mtmp);
        return (1);
}

/* Make monster mtmp next to you (if possible) */
void
mnexto(struct monst *mtmp)
{
        coord           mm;
        mm = enexto(u.ux, u.uy);
        mtmp->mx = mm.x;
        mtmp->my = mm.y;
        pmon(mtmp);
}

static int
ishuman(struct monst *mtmp)
{
        return (mtmp->data->mlet == '@');
}

void
setmangry(struct monst *mtmp)
{
        if (!mtmp->mpeaceful)
                return;
        if (mtmp->mtame)
                return;
        mtmp->mpeaceful = 0;
        if (ishuman(mtmp))
                pline("%s gets angry!", Monnam(mtmp));
}

/*
 * not one hundred procent correct: now a snake may hide under an invisible
 * object
 */
int
canseemon(struct monst *mtmp)
{
        return ((!mtmp->minvis || See_invisible)
                && (!mtmp->mhide || !o_at(mtmp->mx, mtmp->my))
                && cansee(mtmp->mx, mtmp->my));
}