[unix-history] / usr / othersrc / games / hack / hack.dog.c

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

#include	"hack.h"
#include	"hack.mfndpos.h"
extern struct monst *makemon();
#include "def.edog.h"
#include "def.mkroom.h"

struct permonst li_dog =
	{ "little dog", 'd',2,18,6,1,6,sizeof(struct edog) };
struct permonst dog =
	{ "dog", 'd',4,16,5,1,6,sizeof(struct edog) };
struct permonst la_dog =
	{ "large dog", 'd',6,15,4,2,4,sizeof(struct edog) };


makedog(){
register struct monst *mtmp = makemon(&li_dog,u.ux,u.uy);
	if(!mtmp) return; /* dogs were genocided */
	initedog(mtmp);
}

initedog(mtmp) register struct monst *mtmp; {
	mtmp->mtame = mtmp->mpeaceful = 1;
	EDOG(mtmp)->hungrytime = 1000 + moves;
	EDOG(mtmp)->eattime = 0;
	EDOG(mtmp)->droptime = 0;
	EDOG(mtmp)->dropdist = 10000;
	EDOG(mtmp)->apport = 10;
	EDOG(mtmp)->whistletime = 0;
}

/* attach the monsters that went down (or up) together with @ */
struct monst *mydogs = 0;
struct monst *fallen_down = 0;	/* monsters that fell through a trapdoor */
	/* they will appear on the next level @ goes to, even if he goes up! */

losedogs(){
register struct monst *mtmp;
	while(mtmp = mydogs){
		mydogs = mtmp->nmon;
		mtmp->nmon = fmon;
		fmon = mtmp;
		mnexto(mtmp);
	}
	while(mtmp = fallen_down){
		fallen_down = mtmp->nmon;
		mtmp->nmon = fmon;
		fmon = mtmp;
		rloc(mtmp);
	}
}

keepdogs(){
register struct monst *mtmp;
	for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
	    if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp)
		&& !mtmp->msleep && !mtmp->mfroz) {
		relmon(mtmp);
		mtmp->nmon = mydogs;
		mydogs = mtmp;
		unpmon(mtmp);
		keepdogs();	/* we destroyed the link, so use recursion */
		return;		/* (admittedly somewhat primitive) */
	}
}

fall_down(mtmp) register struct monst *mtmp; {
	relmon(mtmp);
	mtmp->nmon = fallen_down;
	fallen_down = mtmp;
	unpmon(mtmp);
	mtmp->mtame = 0;
}

/* return quality of food; the lower the better */
#define	DOGFOOD	0
#define	CADAVER	1
#define	ACCFOOD	2
#define	MANFOOD	3
#define	APPORT	4
#define	POISON	5
#define	UNDEF	6
dogfood(obj) register struct obj *obj; {
	switch(obj->olet) {
	case FOOD_SYM:
	    return(
		(obj->otyp == TRIPE_RATION) ? DOGFOOD :
		(obj->otyp < CARROT) ? ACCFOOD :
		(obj->otyp < CORPSE) ? MANFOOD :
		(poisonous(obj) || obj->age + 50 <= moves ||
		    obj->otyp == DEAD_COCKATRICE)
			? POISON : CADAVER
	    );
	default:
	    if(!obj->cursed) return(APPORT);
	    /* fall into next case */
	case BALL_SYM:
	case CHAIN_SYM:
	case ROCK_SYM:
	    return(UNDEF);
	}
}

/* return 0 (no move), 1 (move) or 2 (dead) */
dog_move(mtmp, after) register struct monst *mtmp; {
register int nx,ny,omx,omy,appr,nearer,j;
int udist,chi,i,whappr;
register struct monst *mtmp2;
register struct permonst *mdat = mtmp->data;
register struct edog *edog = EDOG(mtmp);
struct obj *obj;
struct trap *trap;
xchar cnt,chcnt,nix,niy;
schar dogroom,uroom;
xchar gx,gy,gtyp,otyp;	/* current goal */
coord poss[9];
int info[9];
#define GDIST(x,y) ((x-gx)*(x-gx) + (y-gy)*(y-gy))
#define DDIST(x,y) ((x-omx)*(x-omx) + (y-omy)*(y-omy))

	if(moves <= edog->eattime) return(0);	/* dog is still eating */
	omx = mtmp->mx;
	omy = mtmp->my;
	whappr = (moves - EDOG(mtmp)->whistletime < 5);
	if(moves > edog->hungrytime + 500 && !mtmp->mconf){
		mtmp->mconf = 1;
		mtmp->mhpmax /= 3;
		if(mtmp->mhp > mtmp->mhpmax)
			mtmp->mhp = mtmp->mhpmax;
		if(cansee(omx,omy))
			pline("%s is confused from hunger.", Monnam(mtmp));
		else	pline("You feel worried about %s.", monnam(mtmp));
	} else
	if(moves > edog->hungrytime + 750 || mtmp->mhp < 1){
		if(cansee(omx,omy))
			pline("%s dies from hunger.", Monnam(mtmp));
		else
		pline("You have a sad feeling for a moment, then it passes.");
		mondied(mtmp);
		return(2);
	}
	dogroom = inroom(omx,omy);
	uroom = inroom(u.ux,u.uy);
	udist = dist(omx,omy);

	/* maybe we tamed him while being swallowed --jgm */
	if(!udist) return(0);

	/* if we are carrying sth then we drop it (perhaps near @) */
	/* Note: if apport == 1 then our behaviour is independent of udist */
	if(mtmp->minvent){
		if(!rn2(udist) || !rn2((int) edog->apport))
		if(rn2(10) < edog->apport){
			relobj(mtmp, (int) mtmp->minvis);
			if(edog->apport > 1) edog->apport--;
			edog->dropdist = udist;		/* hpscdi!jon */
			edog->droptime = moves;
		}
	} else {
		if(obj = o_at(omx,omy)) if(!index("0_", obj->olet)){
		    if((otyp = dogfood(obj)) <= CADAVER){
			nix = omx;
			niy = omy;
			goto eatobj;
		    }
		    if(obj->owt < 10*mtmp->data->mlevel)
		    if(rn2(20) < edog->apport+3)
		    if(rn2(udist) || !rn2((int) edog->apport)){
			freeobj(obj);
			unpobj(obj);
			/* if(levl[omx][omy].scrsym == obj->olet)
				newsym(omx,omy); */
			mpickobj(mtmp,obj);
		    }
		}
	}

	/* first we look for food */
	gtyp = UNDEF;	/* no goal as yet */
#ifdef LINT
	gx = gy = 0;	/* suppress 'used before set' message */
#endif LINT
	for(obj = fobj; obj; obj = obj->nobj) {
		otyp = dogfood(obj);
		if(otyp > gtyp || otyp == UNDEF) continue;
		if(inroom(obj->ox,obj->oy) != dogroom) continue;
		if(otyp < MANFOOD &&
		 (dogroom >= 0 || DDIST(obj->ox,obj->oy) < 10)) {
			if(otyp < gtyp || (otyp == gtyp &&
				DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){
				gx = obj->ox;
				gy = obj->oy;
				gtyp = otyp;
			}
		} else
		if(gtyp == UNDEF && dogroom >= 0 &&
		   uroom == dogroom &&
		   !mtmp->minvent && edog->apport > rn2(8)){
			gx = obj->ox;
			gy = obj->oy;
			gtyp = APPORT;
		}
	}
	if(gtyp == UNDEF ||
	  (gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){
		if(dogroom < 0 || dogroom == uroom){
			gx = u.ux;
			gy = u.uy;
#ifndef QUEST
		} else {
			int tmp = rooms[dogroom].fdoor;
			    cnt = rooms[dogroom].doorct;

			gx = gy = FAR;	/* random, far away */
			while(cnt--){
			    if(dist(gx,gy) >
				dist(doors[tmp].x, doors[tmp].y)){
					gx = doors[tmp].x;
					gy = doors[tmp].y;
				}
				tmp++;
			}
			/* here gx == FAR e.g. when dog is in a vault */
			if(gx == FAR || (gx == omx && gy == omy)){
				gx = u.ux;
				gy = u.uy;
			}
#endif QUEST
		}
		appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0;
		if(after && udist <= 4 && gx == u.ux && gy == u.uy)
			return(0);
		if(udist > 1){
			if(!IS_ROOM(levl[u.ux][u.uy].typ) || !rn2(4) ||
			   whappr ||
			   (mtmp->minvent && rn2((int) edog->apport)))
				appr = 1;
		}
		/* if you have dog food he'll follow you more closely */
		if(appr == 0){
			obj = invent;
			while(obj){
				if(obj->otyp == TRIPE_RATION){
					appr = 1;
					break;
				}
				obj = obj->nobj;
			}
		}
	} else	appr = 1;	/* gtyp != UNDEF */
	if(mtmp->mconf) appr = 0;

	if(gx == u.ux && gy == u.uy && (dogroom != uroom || dogroom < 0)){
	extern coord *gettrack();
	register coord *cp;
		cp = gettrack(omx,omy);
		if(cp){
			gx = cp->x;
			gy = cp->y;
		}
	}

	nix = omx;
	niy = omy;
	cnt = mfndpos(mtmp,poss,info,ALLOW_M | ALLOW_TRAPS);
	chcnt = 0;
	chi = -1;
	for(i=0; i<cnt; i++){
		nx = poss[i].x;
		ny = poss[i].y;
		if(info[i] & ALLOW_M){
			mtmp2 = m_at(nx,ny);
			if(mtmp2->data->mlevel >= mdat->mlevel+2 ||
			  mtmp2->data->mlet == 'c')
				continue;
			if(after) return(0); /* hit only once each move */

			if(hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
			  mtmp2->mlstmv != moves &&
			  hitmm(mtmp2,mtmp) == 2) return(2);
			return(0);
		}

		/* dog avoids traps */
		/* but perhaps we have to pass a trap in order to follow @ */
		if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){
			if(!trap->tseen && rn2(40)) continue;
			if(rn2(10)) continue;
		}

		/* dog eschewes cursed objects */
		/* but likes dog food */
		obj = fobj;
		while(obj){
		    if(obj->ox != nx || obj->oy != ny)
			goto nextobj;
		    if(obj->cursed) goto nxti;
		    if(obj->olet == FOOD_SYM &&
			(otyp = dogfood(obj)) < MANFOOD &&
			(otyp < ACCFOOD || edog->hungrytime <= moves)){
			/* Note: our dog likes the food so much that he
			might eat it even when it conceals a cursed object */
			nix = nx;
			niy = ny;
			chi = i;
		     eatobj:
			edog->eattime =
			    moves + obj->quan * objects[obj->otyp].oc_delay;
			if(edog->hungrytime < moves)
			    edog->hungrytime = moves;
			edog->hungrytime +=
			    5*obj->quan * objects[obj->otyp].nutrition;
			mtmp->mconf = 0;
			if(cansee(nix,niy))
			    pline("%s ate %s.", Monnam(mtmp), doname(obj));
			/* perhaps this was a reward */
			if(otyp != CADAVER)
			edog->apport += 200/(edog->dropdist+moves-edog->droptime);
			delobj(obj);
			goto newdogpos;
		    }
		nextobj:
		    obj = obj->nobj;
		}

		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;

/* Some stupid C compilers cannot compute the whole expression at once. */
		nearer = GDIST(nx,ny);
		nearer -= GDIST(nix,niy);
		nearer *= appr;
		if((nearer == 0 && !rn2(++chcnt)) || nearer<0 ||
			(nearer > 0 && !whappr &&
				((omx == nix && omy == niy && !rn2(3))
				|| !rn2(12))
			)){
			nix = nx;
			niy = ny;
			if(nearer < 0) chcnt = 0;
			chi = i;
		}
	nxti:	;
	}
newdogpos:
	if(nix != omx || niy != omy){
		if(info[chi] & ALLOW_U){
			(void) hitu(mtmp, d(mdat->damn, mdat->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;
	}
	if(mintrap(mtmp) == 2)	/* he died */
		return(2);
	pmon(mtmp);
	return(1);
}

/* return roomnumber or -1 */
inroom(x,y) xchar x,y; {
#ifndef QUEST
	register struct mkroom *croom = &rooms[0];
	while(croom->hx >= 0){
		if(croom->hx >= x-1 && croom->lx <= x+1 &&
		   croom->hy >= y-1 && croom->ly <= y+1)
			return(croom - rooms);
		croom++;
	}
#endif QUEST
	return(-1);	/* not in room or on door */
}

tamedog(mtmp, obj)
register struct monst *mtmp;
register struct obj *obj;
{
	register struct monst *mtmp2;

	if(flags.moonphase == FULL_MOON && night() && rn2(6))
		return(0);

	/* If we cannot tame him, at least he's no longer afraid. */
	mtmp->mflee = 0;
	mtmp->mfleetim = 0;
	if(mtmp->mtame || mtmp->mfroz ||
#ifndef NOWORM
		mtmp->wormno ||
#endif NOWORM
		mtmp->isshk || mtmp->isgd || index(" &@12", mtmp->data->mlet))
		return(0); /* no tame long worms? */
	if(obj) {
		if(dogfood(obj) >= MANFOOD) return(0);
		if(cansee(mtmp->mx,mtmp->my)){
			pline("%s devours the %s.", Monnam(mtmp),
				objects[obj->otyp].oc_name);
		}
		obfree(obj, (struct obj *) 0);
	}
	mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth);
	*mtmp2 = *mtmp;
	mtmp2->mxlth = sizeof(struct edog);
	if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp));
	initedog(mtmp2);
	replmon(mtmp,mtmp2);
	return(1);
}
Commit	Line	Data
7c496796 WJ	1	/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
	2	/* hack.dog.c - version 1.0.3 */
	3
	4	#include "hack.h"
	5	#include "hack.mfndpos.h"
	6	extern struct monst *makemon();
	7	#include "def.edog.h"
	8	#include "def.mkroom.h"
	9
	10	struct permonst li_dog =
	11	{ "little dog", 'd',2,18,6,1,6,sizeof(struct edog) };
	12	struct permonst dog =
	13	{ "dog", 'd',4,16,5,1,6,sizeof(struct edog) };
	14	struct permonst la_dog =
	15	{ "large dog", 'd',6,15,4,2,4,sizeof(struct edog) };
	16
	17
	18	makedog(){
	19	register struct monst *mtmp = makemon(&li_dog,u.ux,u.uy);
	20	if(!mtmp) return; /* dogs were genocided */
	21	initedog(mtmp);
	22	}
	23
	24	initedog(mtmp) register struct monst *mtmp; {
	25	mtmp->mtame = mtmp->mpeaceful = 1;
	26	EDOG(mtmp)->hungrytime = 1000 + moves;
	27	EDOG(mtmp)->eattime = 0;
	28	EDOG(mtmp)->droptime = 0;
	29	EDOG(mtmp)->dropdist = 10000;
	30	EDOG(mtmp)->apport = 10;
	31	EDOG(mtmp)->whistletime = 0;
	32	}
	33
	34	/* attach the monsters that went down (or up) together with @ */
	35	struct monst *mydogs = 0;
	36	struct monst fallen_down = 0; / monsters that fell through a trapdoor */
	37	/* they will appear on the next level @ goes to, even if he goes up! */
	38
	39	losedogs(){
	40	register struct monst *mtmp;
	41	while(mtmp = mydogs){
	42	mydogs = mtmp->nmon;
	43	mtmp->nmon = fmon;
	44	fmon = mtmp;
	45	mnexto(mtmp);
	46	}
	47	while(mtmp = fallen_down){
	48	fallen_down = mtmp->nmon;
	49	mtmp->nmon = fmon;
	50	fmon = mtmp;
	51	rloc(mtmp);
	52	}
	53	}
	54
	55	keepdogs(){
	56	register struct monst *mtmp;
	57	for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
	58	if(dist(mtmp->mx,mtmp->my) < 3 && follower(mtmp)
	59	&& !mtmp->msleep && !mtmp->mfroz) {
	60	relmon(mtmp);
	61	mtmp->nmon = mydogs;
	62	mydogs = mtmp;
	63	unpmon(mtmp);
	64	keepdogs(); /* we destroyed the link, so use recursion */
65	return; /* (admittedly somewhat primitive) */
66	}
67	}
68
69	fall_down(mtmp) register struct monst *mtmp; {
70	relmon(mtmp);
71	mtmp->nmon = fallen_down;
72	fallen_down = mtmp;
73	unpmon(mtmp);
74	mtmp->mtame = 0;
75	}
76
77	/* return quality of food; the lower the better */
78	#define DOGFOOD 0
79	#define CADAVER 1
80	#define ACCFOOD 2
81	#define MANFOOD 3
82	#define APPORT 4
83	#define POISON 5
84	#define UNDEF 6
85	dogfood(obj) register struct obj *obj; {
86	switch(obj->olet) {
87	case FOOD_SYM:
88	return(
89	(obj->otyp == TRIPE_RATION) ? DOGFOOD :
90	(obj->otyp < CARROT) ? ACCFOOD :
91	(obj->otyp < CORPSE) ? MANFOOD :
92	(poisonous(obj) \|\| obj->age + 50 <= moves \|\|
93	obj->otyp == DEAD_COCKATRICE)
94	? POISON : CADAVER
95	);
96	default:
97	if(!obj->cursed) return(APPORT);
98	/* fall into next case */
99	case BALL_SYM:
100	case CHAIN_SYM:
101	case ROCK_SYM:
102	return(UNDEF);
103	}
104	}
105
106	/* return 0 (no move), 1 (move) or 2 (dead) */
107	dog_move(mtmp, after) register struct monst *mtmp; {
108	register int nx,ny,omx,omy,appr,nearer,j;
109	int udist,chi,i,whappr;
110	register struct monst *mtmp2;
111	register struct permonst *mdat = mtmp->data;
112	register struct edog *edog = EDOG(mtmp);
113	struct obj *obj;
114	struct trap *trap;
115	xchar cnt,chcnt,nix,niy;
116	schar dogroom,uroom;
117	xchar gx,gy,gtyp,otyp; /* current goal */
118	coord poss[9];
119	int info[9];
120	#define GDIST(x,y) ((x-gx)(x-gx) + (y-gy)(y-gy))
121	#define DDIST(x,y) ((x-omx)(x-omx) + (y-omy)(y-omy))
122
123	if(moves <= edog->eattime) return(0); /* dog is still eating */
124	omx = mtmp->mx;
125	omy = mtmp->my;
126	whappr = (moves - EDOG(mtmp)->whistletime < 5);
127	if(moves > edog->hungrytime + 500 && !mtmp->mconf){
128	mtmp->mconf = 1;
129	mtmp->mhpmax /= 3;
130	if(mtmp->mhp > mtmp->mhpmax)
131	mtmp->mhp = mtmp->mhpmax;
132	if(cansee(omx,omy))
133	pline("%s is confused from hunger.", Monnam(mtmp));
134	else pline("You feel worried about %s.", monnam(mtmp));
135	} else
136	if(moves > edog->hungrytime + 750 \|\| mtmp->mhp < 1){
137	if(cansee(omx,omy))
138	pline("%s dies from hunger.", Monnam(mtmp));
139	else
140	pline("You have a sad feeling for a moment, then it passes.");
141	mondied(mtmp);
142	return(2);
143	}
144	dogroom = inroom(omx,omy);
145	uroom = inroom(u.ux,u.uy);
146	udist = dist(omx,omy);
147
148	/* maybe we tamed him while being swallowed --jgm */
149	if(!udist) return(0);
150
151	/* if we are carrying sth then we drop it (perhaps near @) */
152	/* Note: if apport == 1 then our behaviour is independent of udist */
153	if(mtmp->minvent){
154	if(!rn2(udist) \|\| !rn2((int) edog->apport))
155	if(rn2(10) < edog->apport){
156	relobj(mtmp, (int) mtmp->minvis);
157	if(edog->apport > 1) edog->apport--;
158	edog->dropdist = udist; /* hpscdi!jon */
159	edog->droptime = moves;
160	}
161	} else {
162	if(obj = o_at(omx,omy)) if(!index("0_", obj->olet)){
163	if((otyp = dogfood(obj)) <= CADAVER){
164	nix = omx;
165	niy = omy;
166	goto eatobj;
167	}
168	if(obj->owt < 10*mtmp->data->mlevel)
169	if(rn2(20) < edog->apport+3)
170	if(rn2(udist) \|\| !rn2((int) edog->apport)){
171	freeobj(obj);
172	unpobj(obj);
173	/* if(levl[omx][omy].scrsym == obj->olet)
174	newsym(omx,omy); */
175	mpickobj(mtmp,obj);
176	}
177	}
178	}
179
180	/* first we look for food */
181	gtyp = UNDEF; /* no goal as yet */
182	#ifdef LINT
183	gx = gy = 0; /* suppress 'used before set' message */
184	#endif LINT
185	for(obj = fobj; obj; obj = obj->nobj) {
186	otyp = dogfood(obj);
187	if(otyp > gtyp \|\| otyp == UNDEF) continue;
188	if(inroom(obj->ox,obj->oy) != dogroom) continue;
189	if(otyp < MANFOOD &&
190	(dogroom >= 0 \|\| DDIST(obj->ox,obj->oy) < 10)) {
191	if(otyp < gtyp \|\| (otyp == gtyp &&
192	DDIST(obj->ox,obj->oy) < DDIST(gx,gy))){
193	gx = obj->ox;
194	gy = obj->oy;
195	gtyp = otyp;
196	}
197	} else
198	if(gtyp == UNDEF && dogroom >= 0 &&
199	uroom == dogroom &&
200	!mtmp->minvent && edog->apport > rn2(8)){
201	gx = obj->ox;
202	gy = obj->oy;
203	gtyp = APPORT;
204	}
205	}
206	if(gtyp == UNDEF \|\|
207	(gtyp != DOGFOOD && gtyp != APPORT && moves < edog->hungrytime)){
208	if(dogroom < 0 \|\| dogroom == uroom){
209	gx = u.ux;
210	gy = u.uy;
211	#ifndef QUEST
212	} else {
213	int tmp = rooms[dogroom].fdoor;
214	cnt = rooms[dogroom].doorct;
215
216	gx = gy = FAR; /* random, far away */
217	while(cnt--){
218	if(dist(gx,gy) >
219	dist(doors[tmp].x, doors[tmp].y)){
220	gx = doors[tmp].x;
221	gy = doors[tmp].y;
222	}
223	tmp++;
224	}
225	/* here gx == FAR e.g. when dog is in a vault */
226	if(gx == FAR \|\| (gx == omx && gy == omy)){
227	gx = u.ux;
228	gy = u.uy;
229	}
230	#endif QUEST
231	}
232	appr = (udist >= 9) ? 1 : (mtmp->mflee) ? -1 : 0;
233	if(after && udist <= 4 && gx == u.ux && gy == u.uy)
234	return(0);
235	if(udist > 1){
236	if(!IS_ROOM(levl[u.ux][u.uy].typ) \|\| !rn2(4) \|\|
237	whappr \|\|
238	(mtmp->minvent && rn2((int) edog->apport)))
239	appr = 1;
240	}
241	/* if you have dog food he'll follow you more closely */
242	if(appr == 0){
243	obj = invent;
244	while(obj){
245	if(obj->otyp == TRIPE_RATION){
246	appr = 1;
247	break;
248	}
249	obj = obj->nobj;
250	}
251	}
252	} else appr = 1; /* gtyp != UNDEF */
253	if(mtmp->mconf) appr = 0;
254
255	if(gx == u.ux && gy == u.uy && (dogroom != uroom \|\| dogroom < 0)){
256	extern coord *gettrack();
257	register coord *cp;
258	cp = gettrack(omx,omy);
259	if(cp){
260	gx = cp->x;
261	gy = cp->y;
262	}
263	}
264
265	nix = omx;
266	niy = omy;
267	cnt = mfndpos(mtmp,poss,info,ALLOW_M \| ALLOW_TRAPS);
268	chcnt = 0;
269	chi = -1;
270	for(i=0; i<cnt; i++){
271	nx = poss[i].x;
272	ny = poss[i].y;
273	if(info[i] & ALLOW_M){
274	mtmp2 = m_at(nx,ny);
275	if(mtmp2->data->mlevel >= mdat->mlevel+2 \|\|
276	mtmp2->data->mlet == 'c')
277	continue;
278	if(after) return(0); /* hit only once each move */
279
280	if(hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
281	mtmp2->mlstmv != moves &&
282	hitmm(mtmp2,mtmp) == 2) return(2);
283	return(0);
284	}
285
286	/* dog avoids traps */
287	/* but perhaps we have to pass a trap in order to follow @ */
288	if((info[i] & ALLOW_TRAPS) && (trap = t_at(nx,ny))){
289	if(!trap->tseen && rn2(40)) continue;
290	if(rn2(10)) continue;
291	}
292
293	/* dog eschewes cursed objects */
294	/* but likes dog food */
295	obj = fobj;
296	while(obj){
297	if(obj->ox != nx \|\| obj->oy != ny)
298	goto nextobj;
299	if(obj->cursed) goto nxti;
300	if(obj->olet == FOOD_SYM &&
301	(otyp = dogfood(obj)) < MANFOOD &&
302	(otyp < ACCFOOD \|\| edog->hungrytime <= moves)){
303	/* Note: our dog likes the food so much that he
304	might eat it even when it conceals a cursed object */
305	nix = nx;
306	niy = ny;
307	chi = i;
308	eatobj:
309	edog->eattime =
310	moves + obj->quan * objects[obj->otyp].oc_delay;
311	if(edog->hungrytime < moves)
312	edog->hungrytime = moves;
313	edog->hungrytime +=
314	5obj->quan objects[obj->otyp].nutrition;
315	mtmp->mconf = 0;
316	if(cansee(nix,niy))
317	pline("%s ate %s.", Monnam(mtmp), doname(obj));
318	/* perhaps this was a reward */
319	if(otyp != CADAVER)
320	edog->apport += 200/(edog->dropdist+moves-edog->droptime);
321	delobj(obj);
322	goto newdogpos;
323	}
324	nextobj:
325	obj = obj->nobj;
326	}
327
328	for(j=0; j<MTSZ && j<cnt-1; j++)
329	if(nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
330	if(rn2(4*(cnt-j))) goto nxti;
331
332	/* Some stupid C compilers cannot compute the whole expression at once. */
333	nearer = GDIST(nx,ny);
334	nearer -= GDIST(nix,niy);
335	nearer *= appr;
336	if((nearer == 0 && !rn2(++chcnt)) \|\| nearer<0 \|\|
337	(nearer > 0 && !whappr &&
338	((omx == nix && omy == niy && !rn2(3))
339	\|\| !rn2(12))
340	)){
341	nix = nx;
342	niy = ny;
343	if(nearer < 0) chcnt = 0;
344	chi = i;
345	}
346	nxti: ;
347	}
348	newdogpos:
349	if(nix != omx \|\| niy != omy){
350	if(info[chi] & ALLOW_U){
351	(void) hitu(mtmp, d(mdat->damn, mdat->damd)+1);
352	return(0);
353	}
354	mtmp->mx = nix;
355	mtmp->my = niy;
356	for(j=MTSZ-1; j>0; j--) mtmp->mtrack[j] = mtmp->mtrack[j-1];
357	mtmp->mtrack[0].x = omx;
358	mtmp->mtrack[0].y = omy;
359	}
360	if(mintrap(mtmp) == 2) /* he died */
361	return(2);
362	pmon(mtmp);
363	return(1);
364	}
365
366	/* return roomnumber or -1 */
367	inroom(x,y) xchar x,y; {
368	#ifndef QUEST
369	register struct mkroom *croom = &rooms[0];
370	while(croom->hx >= 0){
371	if(croom->hx >= x-1 && croom->lx <= x+1 &&
372	croom->hy >= y-1 && croom->ly <= y+1)
373	return(croom - rooms);
374	croom++;
375	}
376	#endif QUEST
377	return(-1); /* not in room or on door */
378	}
379
380	tamedog(mtmp, obj)
381	register struct monst *mtmp;
382	register struct obj *obj;
383	{
384	register struct monst *mtmp2;
385
386	if(flags.moonphase == FULL_MOON && night() && rn2(6))
387	return(0);
388
389	/* If we cannot tame him, at least he's no longer afraid. */
390	mtmp->mflee = 0;
391	mtmp->mfleetim = 0;
392	if(mtmp->mtame \|\| mtmp->mfroz \|\|
393	#ifndef NOWORM
394	mtmp->wormno \|\|
395	#endif NOWORM
396	mtmp->isshk \|\| mtmp->isgd \|\| index(" &@12", mtmp->data->mlet))
397	return(0); /* no tame long worms? */
398	if(obj) {
399	if(dogfood(obj) >= MANFOOD) return(0);
400	if(cansee(mtmp->mx,mtmp->my)){
401	pline("%s devours the %s.", Monnam(mtmp),
402	objects[obj->otyp].oc_name);
403	}
404	obfree(obj, (struct obj *) 0);
405	}
406	mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth);
407	mtmp2 = mtmp;
408	mtmp2->mxlth = sizeof(struct edog);
409	if(mtmp->mnamelth) (void) strcpy(NAME(mtmp2), NAME(mtmp));
410	initedog(mtmp2);
411	replmon(mtmp,mtmp2);
412	return(1);
413	}