hack.mon.c

早期freebsd实现

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.mon.c - version 1.0.3 */

#include "hack.h"
#include "hack.mfndpos.h"

#ifndef NULL
#define	NULL	(char *) 0
#endif

extern struct monst *makemon();
extern struct obj *mkobj_at();

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;

		/* 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){
	    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.uswallow = 1;
	u.uswldtim = 0;
	swallowed();
}

youswld(mtmp,dam,die,name)
register struct monst *mtmp;
register dam,die;
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);
	/* flags.botlx = 1;		/* should we show status line ? */
}

dochugw(mtmp) register struct monst *mtmp; {
register x = mtmp->mx;
register y = mtmp->my;
register d = dochug(mtmp);
register dd;
	if(!d)		/* 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(d);
}

/* returns 1 if monster died moving, 0 otherwise */
dochug(mtmp)
register struct monst *mtmp;
{
	register struct permonst *mdat;
	register tmp, 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) || index(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))) &&
			(!index("NL",mdat->mlet) || !rn2(50)) &&
			(Aggravate_monster || index("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 && index("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)) ||
		(index("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(!index("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);
}

m_move(mtmp,after)
register struct monst *mtmp;
{
	register struct monst *mtmp2;
	register nx,ny,omx,omy,appr,nearer,cnt,i,j;
	xchar gx,gy,nix,niy,chcnt;
	schar chi;
	boolean likegold, likegems, likeobjs;
	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(index("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 ||
		(index("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')) {
	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;
		    }
		}
	}

	/* look for gold or jewels nearby */
	likegold = (index("LOD", msym) != NULL);
	likegems = (index("ODu", msym) != NULL);
	likeobjs = mtmp->mhide;
#define	SRCHRADIUS	25
	{ xchar mind = SRCHRADIUS;		/* not too far away */
	  register int dd;
	  if(likegold){
		register 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){
		register 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) :
		index(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(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