/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.mon.c version 1.0.1 - some unimportant changes */

#include "hack.h"
#include "hack.mfndpos.h"
#define   SIZE(x)   (int)(sizeof(x) / sizeof(x[0]))
#define   NULL   (char *) 0
extern struct monst *makemon();

int warnlevel;      /* used by movemon and dochugw */
long lastwarntime;
int lastwarnlev;
char *warnings[] = {
   "white", "pink", "red", "ruby", "purple", "black"
};

movemon()
{
   register struct monst *mtmp;
   register 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;
      if(mtmp->mblinded && !--mtmp->mblinded)
         mtmp->mcansee = 1;
      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){
       register 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 */
}

justswld(mtmp,name)
register struct monst *mtmp;
char *name;
{

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

youswld(mtmp,dam,die,name)
register struct monst *mtmp;
register int dam,die;
char *name;
{
   if(mtmp != u.ustuck) return;
   kludge("%s digests you!",name);
   u.uhp -= dam;
   if(u.uswldtim++ == die){
      pline("It totally digests you!");
      u.uhp = -1;
   }
   if(u.uhp < 1) done_in_by(mtmp);
}

dochugw(mtmp) register struct monst *mtmp; {
register int x = mtmp->mx;
register int y = mtmp->my;
register int d = dochug(mtmp);
register int dd;
   if(!d)      /* monster still alive */
   if(Warning)
   if(!mtmp->mpeaceful)
   if((dd = dist(mtmp->mx,mtmp->my)) < dist(x,y))
   if(dd < 100)
   if(!cansee(mtmp->mx, mtmp->my) || (mtmp->minvis && !See_invisible))
   if(mtmp->data->mlevel > warnlevel)
      warnlevel = mtmp->data->mlevel;
   return(d);
}

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

   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);
   if((!(moves%20) || index("ViT",mdat->mlet)) &&
       mtmp->mhp<mtmp->orig_hp)
      mtmp->mhp++; /* regenerate monsters. */
   if(mtmp->mfroz) return(0); /* frozen monsters don't do anything. */
   if(mtmp->msleep) {/* wake up a monster, or get out of here. */
      if(cansee(mtmp->mx,mtmp->my) && !Stealth &&
         (!index("NL",mdat->mlet) || !rn2(50)) &&
         (Aggravate_monster || (!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 && index("tNL", mdat->mlet) && !rn2(40)){
      rloc(mtmp);
      return(0);
   }
   if(mdat->mmove < rnd(6)) return(0);
   if((mtmp->mflee ||
      mtmp->mconf ||
      (index("BIuy", mdat->mlet) && !rn2(4)) ||
      (mdat->mlet == 'L' && !u.ugold && (mtmp->mgold || rn2(2))) ||
      dist(mtmp->mx,mtmp->my) > 2 ||
      (!mtmp->mcansee && !rn2(4)) ||
      mtmp->mpeaceful
      ) && (tmp = m_move(mtmp,0)) && mdat->mmove <= 12)
      return(tmp == 2);
   if(tmp == 2) return(1);   /* monster died moving */

   if(!index("Ea", mdat->mlet) && dist(mtmp->mx, mtmp->my) < 3 &&
    !mtmp->mpeaceful && u.uhp > 0 &&
    !sengr_at("Elbereth", u.ux, u.uy) &&
    !sobj_at(SCR_SCARE_MONSTER, u.ux, u.uy)) {
      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);
}

inrange(mtmp)
register struct monst *mtmp;
{
   register schar tx,ty;

   /* spit fire only when both in a room or both in a corridor */
   if(inroom(u.ux,u.uy) != inroom(mtmp->mx,mtmp->my)) return;
   tx = u.ux - mtmp->mx;
   ty = u.uy - mtmp->my;
   if((!tx && abs(ty) < 8) || (!ty && abs(tx) < 8)
       || (abs(tx) == abs(ty) && abs(tx) < 8)){
      /* spit fire in the direction of @ (not nec. hitting) */
      buzz(-1,mtmp->mx,mtmp->my,sgn(tx),sgn(ty));
      if(u.uhp < 1) done_in_by(mtmp);
   }
}

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

   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 */

   /* my dog gets a special treatment */
   if(mtmp->mtame) {
      return( dog_move(mtmp, after) );
   }

   /* likewise for shopkeeper */
   if(mtmp->isshk) {
      mmoved = shk_move();
      goto postmov;
   }

   /* and for the guard */
   if(mtmp->isgd) {
      mmoved = gd_move();
      goto postmov;
   }

   if(mtmp->data->mlet == 't' && !rn2(5)) {
      if(rn2(2))
         mnexto(mtmp);
      else
         rloc(mtmp);
      mmoved = 1;
      goto postmov;
   }
   if(mtmp->data->mlet == 'D' && !mtmp->mcan)
      inrange(mtmp);
   if(!Blind && !Confusion && mtmp->data->mlet == 'U' && !mtmp->mcan
      && cansee(mtmp->mx,mtmp->my) && rn2(5)) {
      pline("%s's gaze has confused you!", Monnam(mtmp));
      if(rn2(5)) mtmp->mcan = 1;
      Confusion = d(3,4);      /* timeout */
   }
   if(!mtmp->mflee && u.uswallow && u.ustuck != mtmp) return(1);
   appr = 1;
   if(mtmp->mflee) appr = -1;
   if(mtmp->mconf || Invis ||  !mtmp->mcansee ||
      (index("BIy",mtmp->data->mlet) && !rn2(3)))
      appr = 0;
   omx = mtmp->mx;
   omy = mtmp->my;
   gx = u.ux;
   gy = u.uy;
   if(mtmp->data->mlet == 'L' && appr == 1 && mtmp->mgold > u.ugold)
      appr = -1;
#ifdef TRACK
   /* random criterion for 'smell'
      should use mtmp->msmell
    */
   if('a' <= mtmp->data->mlet && mtmp->data->mlet <= 'z') {
   extern coord *gettrack();
   register 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;
          }
      }
   }
#endif TRACK
   /* look for gold or jewels nearby */
   likegold = (index("LOD", mtmp->data->mlet) != NULL);
   likegems = (index("ODu", mtmp->data->mlet) != NULL);
   likeobjs = mtmp->mhide;
#define   SRCHRADIUS   25
   { xchar mind = SRCHRADIUS;      /* not too far away */
     register int dd;
     if(likegold){
      register struct gen *gold;
      for(gold = fgold; gold; gold = gold->ngen)
        if((dd = DIST(omx,omy,gold->gx,gold->gy)) < mind){
          mind = dd;
          gx = gold->gx;
          gy = gold->gy;
      }
     }
     if(likegems || likeobjs){
      register struct obj *otmp;
      for(otmp = fobj; otmp; otmp = otmp->nobj)
      if(likeobjs || otmp->olet == GEM_SYM)
      if(mtmp->data->mlet != '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,
      mtmp->data->mlet == 'u' ? NOTONL :
      index(" VWZ", mtmp->data->mlet) ? 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(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(mtmp->data->mlet == '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);
}

mpickgold(mtmp) register struct monst *mtmp; {
register struct gen *gold;
   while(gold = g_at(mtmp->mx, mtmp->my, fgold)){
      mtmp->mgold += gold->gflag;
      freegold(gold);
      if(levl[mtmp->mx][mtmp->my].scrsym == '$')
         newsym(mtmp->mx, mtmp->my);
   }
}

mpickgems(mtmp) register struct monst *mtmp; {
register 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 */
mfndpos(mon,poss,info,flag)
register struct monst *mon; coord poss[9]; int info[9], flag; {
register int x,y,nx,ny,cnt = 0,tmp;
register struct monst *mtmp;
   x = mon->mx;
   y = mon->my;
   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((tmp = levl[nx][ny].typ) >= DOOR)
   if(!(nx != x && ny != y &&
      (levl[x][y].typ == DOOR || tmp == DOOR))){
      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)){
         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 */
			{ register struct gen *gtmp = g_at(nx, ny, ftrap);
			register int tt;
			if(gtmp) {
				tt = 1 << (gtmp->gflag & TRAPTYPE);
				if(mon->mtrapseen & tt){
					if(!(flag & tt)) continue;
					info[cnt] |= tt;
				}
         }
      }
      poss[cnt].x = nx;
      poss[cnt].y = ny;
      cnt++;
   }
   return(cnt);
}

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

poisoned(string, pname)
register char *string, *pname;
{
   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;
   }
   switch(rnd(6)) {
   case 1:
      u.uhp = -1;
      break;
   case 2:
   case 3:
   case 4:
      losestr(rn1(3,3));
      break;
   case 5:
   case 6:
      losehp(rn1(10,6), pname);
      return;
   }
   if(u.uhp < 1) killer = pname;
}

mondead(mtmp)
register struct monst *mtmp;
{
	relobj(mtmp,1);
	unpmon(mtmp);
	relmon(mtmp);
	if(u.ustuck == mtmp) {
		u.ustuck = 0;
		if(u.uswallow) {
			u.uswldtim = 0;
			u.uswallow = 0;
			setsee();
			docrt();
      }
   }
   if(mtmp->isshk) shkdead();
   if(mtmp->isgd) gddead();
#ifndef NOWORM
   if(mtmp->wormno) wormdead(mtmp);
#endif NOWORM
   monfree(mtmp);
}

/* called when monster is moved to larger structure */
replmon(mtmp,mtmp2)
register struct monst *mtmp, *mtmp2;
{
   relmon(mtmp);
   monfree(mtmp);
   mtmp2->nmon = fmon;
   fmon = mtmp2;
}

relmon(mon)
register struct monst *mon;
{
   register 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 */
struct monst *fdmon;   /* chain of dead monsters, need not to be saved */

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

dmonsfree(){
register struct monst *mtmp;
   while(mtmp = fdmon){
      fdmon = mtmp->nmon;
      free((char *) mtmp);
   }
}

killed(mtmp) struct monst *mtmp; {
#ifdef lint
#define   NEW_SCORING
#endif lint
register int tmp,tmp2,nk,x,y;
register struct permonst *mdat = mtmp->data;
   if(mtmp->cham) mdat = PM_CHAM;
   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;    /* index in mons array (if not 'd', '@', ...) */
   if(tmp >= 0 && tmp < CMNUM+2) {
       extern char fut_geno[];
       u.nr_killed[tmp]++;
       if((nk = u.nr_killed[tmp]) > MAXMONNO &&
      !index(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;

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

#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;

   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

   u.uexp += tmp;
   u.urexp += 4*tmp;
   flags.botl = 1;
   while(u.ulevel < 14 && u.uexp >= 10*pow(u.ulevel-1)){
      pline("Welcome to level %d.", ++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(WAND_SYM, WAN_DIGGING, x, y);
      /* if(cansee(x,y)) atl(x,y,fobj->olet); */
      stackobj(fobj);
   } else
#ifndef NOWORM
   if(tmp == 'w') {
      mksobj_at(WEAPON_SYM, WORM_TOOTH, x, y);
      stackobj(fobj);
   } else
#endif   NOWORM
   if(!letter(tmp) || !rn2(3)) tmp = 0;

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

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

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

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

newcham(mtmp,mdat)   /* make a chameleon look like a new monster */
         /* returns 1 if the monster actually changed */
register struct monst *mtmp;
register struct permonst *mdat;
{
   register 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
   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->orig_hp;
   mtmp->orig_hp = 2 + (hpn*mhp)/hpd;
   mtmp->minvis = (mdat->mlet == 'I') ? 1 : 0;
#ifndef NOWORM
   if(mdat->mlet == 'w' && getwn(mtmp)) initworm(mtmp);
#endif NOWORM
   unpmon(mtmp);   /* necessary for 'I' and to force pmon */
			/* perhaps we should clear mtmp->mtame here? */
   pmon(mtmp);
   return(1);
}

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

rloc(mtmp)
struct monst *mtmp;
{
   register int tx,ty;
   register char ch = mtmp->data->mlet;

#ifndef NOWORM
   if(ch == 'w' && mtmp->mx) return;   /* do not relocate worms */
#endif NOWORM
   do {
      tx = rn1(COLNO-3,2);
      ty = rn2(ROWNO);
   } while(!goodpos(tx,ty));
   mtmp->mx = tx;
   mtmp->my = ty;
   if(u.ustuck == mtmp){
      if(u.uswallow) {
         u.ux = tx;
         u.uy = ty;
         docrt();
      } else   u.ustuck = 0;
   }
   pmon(mtmp);
}

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

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