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/* SCCS Id: @(#)dogmove.c 3.0 88/04/15
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
#include "mfndpos.h"
#include "edog.h"
#ifdef OVL0
static const char nofetch[] = { BALL_SYM, CHAIN_SYM, ROCK_SYM, 0 };
#endif /* OVL0 */
OSTATIC void FDECL(dog_eat, (struct monst *, struct obj *, XCHAR_P, int, int));
#ifdef OVLB
XSTATIC void
dog_eat(mtmp, obj, otyp, x, y)
register struct monst *mtmp;
register struct obj * obj;
xchar otyp;
int x, y;
{
register struct edog *edog = EDOG(mtmp);
int nutrit;
if(edog->hungrytime < moves)
edog->hungrytime = moves;
/* Note: to get the correct percentage-eaten in case oeaten is set,
* use "obj->owt / obj->quan / base-weight". It so happens that here
* we want to multiply by obj->quan, which thus cancels out.
* It is arbitrary that the pet takes the same length of time to eat
* as a human, but gets 5X as much nutrition.
*/
if(obj->otyp == CORPSE) {
mtmp->meating = 3 + (mons[obj->corpsenm].cwt >> 2);
nutrit = 5 * mons[obj->corpsenm].cnutrit;
} else {
mtmp->meating = objects[obj->otyp].oc_delay;
nutrit = 5 * objects[obj->otyp].nutrition;
}
if(obj->oeaten) {
mtmp->meating = eaten_stat(mtmp->meating, obj);
nutrit = eaten_stat(nutrit, obj);
}
edog->hungrytime += nutrit;
mtmp->mconf = 0;
if (mtmp->mtame < 20) mtmp->mtame++;
if(cansee(x,y))
pline("%s eats %s.", Monnam(mtmp), doname(obj));
/* perhaps this was a reward */
if(otyp != CADAVER)
#ifdef LINT
edog->apport = 0;
#else
edog->apport += (unsigned)(200L/
((long)edog->dropdist+moves-edog->droptime));
#endif
delobj(obj);
}
#endif /* OVLB */
#ifdef OVL0
/* return 0 (no move), 1 (move) or 2 (dead) */
int
dog_move(mtmp, after)
register struct monst *mtmp;
register int after;
{
register int nx,ny,omx,omy,appr,nearer,j;
int udist,chi,i,whappr;
/* XLINT 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];
long info[9];
long allowflags;
#define GDIST(x,y) (dist2(x,y,gx,gy))
#define DDIST(x,y) (dist2(x,y,omx,omy))
#ifdef __GNULINT__
chi = -1; /* gcc warning from 'goto newdogpos' */
#endif
omx = mtmp->mx;
omy = mtmp->my;
whappr = (moves - edog->whistletime < 5);
if(moves > edog->hungrytime + 500) {
if(!carnivorous(mtmp->data) && !herbivorous(mtmp->data)) {
edog->hungrytime = moves + 500;
/* but not too high; it might polymorph */
} else if (!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 You("feel worried about %s.", mon_nam(mtmp));
} else if(moves > edog->hungrytime + 750 ||
mtmp->mhp < 1) {
#ifdef WALKIES
if(mtmp->mleashed)
Your("leash goes slack.");
#endif
if(cansee(omx,omy))
pline("%s dies%s.", Monnam(mtmp),
(mtmp->mhp >= 1) ? "" : " from hunger");
else
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){
if (cansee(omx,omy) && flags.verbose)
pline("%s drops %s.", Monnam(mtmp),
distant_name(mtmp->minvent, doname));
relobj(mtmp, (int) mtmp->minvis);
if(edog->apport > 1) edog->apport--;
edog->dropdist = udist; /* hpscdi!jon */
edog->droptime = moves;
}
} else {
if((obj=level.objects[omx][omy]) && !index(nofetch,obj->olet)){
if((otyp = dogfood(mtmp, obj)) <= CADAVER){
nix = omx;
niy = omy;
dog_eat(mtmp, obj, otyp, nix, niy);
goto newdogpos;
}
if(can_carry(mtmp, obj))
if(!obj->cursed)
if(rn2(20) < edog->apport+3)
if(rn2(udist) || !rn2((int) edog->apport)){
if (cansee(omx, omy) && flags.verbose)
pline("%s picks up %s.", Monnam(mtmp),
distant_name(obj, doname));
freeobj(obj);
unpobj(obj);
/* if(levl[omx][omy].scrsym == obj->olet)
newsym(omx,omy); */
mpickobj(mtmp,obj);
}
}
}
gtyp = UNDEF; /* no goal as yet */
gx = gy = 0; /* suppress 'used before set' message */
#ifdef WALKIES
/* If he's on a leash, he's not going anywhere. */
if(mtmp->mleashed) {
gtyp = APPORT;
gx = u.ux;
gy = u.uy;
} else
#endif
/* first we look for food, then objects */
for(obj = fobj; obj; obj = obj->nobj) {
otyp = dogfood(mtmp, 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) &&
can_carry(mtmp,obj)){
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;
} 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;
}
}
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 it'll follow you more closely */
if(appr == 0){
obj = invent;
while(obj){
if(dogfood(mtmp, obj) == DOGFOOD) {
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)) {
register coord *cp;
cp = gettrack(omx,omy);
if(cp){
gx = cp->x;
gy = cp->y;
}
}
nix = omx;
niy = omy;
allowflags = ALLOW_M | ALLOW_TRAPS | ALLOW_SSM | ALLOW_SANCT;
if (passes_walls(mtmp->data)) allowflags |= (ALLOW_ROCK|ALLOW_WALL);
if (throws_rocks(mtmp->data)) allowflags |= ALLOW_ROCK;
if (!nohands(mtmp->data) && !verysmall(mtmp->data)) {
allowflags |= OPENDOOR;
if (m_carrying(mtmp, SKELETON_KEY)) allowflags |= BUSTDOOR;
}
if (is_giant(mtmp->data)) allowflags |= BUSTDOOR;
if (tunnels(mtmp->data) && !needspick(mtmp->data))
allowflags |= ALLOW_DIG;
cnt = mfndpos(mtmp, poss, info, allowflags);
if (allowflags & ALLOW_DIG) if(!mdig_tunnel(mtmp)) return(2);
chcnt = 0;
chi = -1;
for(i=0; i<cnt; i++){
nx = poss[i].x;
ny = poss[i].y;
#ifdef WALKIES
/* if leashed, we drag him along. */
if(dist(nx, ny) > 4 && mtmp->mleashed) continue;
#endif
if(info[i] & ALLOW_M) {
if(MON_AT(nx, ny)) {
int stat;
register struct monst *mtmp2 = m_at(nx,ny);
if(mtmp2->m_lev >= mtmp->m_lev+2 ||
(mtmp2->data->mlet == S_COCKATRICE &&
!resists_ston(mtmp->data)))
continue;
if(after) return(0); /* hit only once each move */
if((stat = mattackm(mtmp, mtmp2)) == 1 && rn2(4) &&
mtmp2->mlstmv != moves &&
mattackm(mtmp2, mtmp) == 2) return(2);
if(stat == -1) 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))){
#ifdef WALKIES
if(!mtmp->mleashed) {
#endif
if(!trap->tseen && rn2(40)) continue;
if(rn2(10)) continue;
#ifdef WALKIES
}
# ifdef SOUNDS
else if(flags.soundok)
whimper(mtmp);
# endif
#endif
}
/* dog eschews cursed objects */
/* but likes dog food */
for(obj = level.objects[nx][ny]; obj; obj = obj->nexthere) {
if(obj->cursed && !mtmp->mleashed) goto nxti;
if(obj->olet == FOOD_SYM &&
(otyp = dogfood(mtmp, 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;
dog_eat(mtmp, obj, otyp, nix, niy);
goto newdogpos;
}
}
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;
nearer = (GDIST(nx,ny) - GDIST(nix,niy)) * 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) {
#ifdef WALKIES
if(mtmp->mleashed) { /* play it safe */
pline("%s breaks loose of %s leash!",
is_female(mtmp) ? "her" :
is_human(mtmp->data) ? "his" : "its",
Monnam(mtmp));
m_unleash(mtmp);
}
#endif
(void) mattacku(mtmp);
return(0);
}
remove_monster(omx, omy);
place_monster(mtmp, nix, 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;
}
#ifdef WALKIES
/* an incredible kluge, but the only way to keep pooch near
* after he spends time eating or in a trap, etc...
*/
else if(mtmp->mleashed && dist(omx, omy) > 4) {
coord cc;
nx = sgn(omx - u.ux);
ny = sgn(omy - u.uy);
if(goodpos((cc.x = u.ux+nx), (cc.y = u.uy+ny), mtmp->data))
goto dognext;
i = xytod(nx, ny);
for(j = (i + 7)%8; j < (i + 1)%8; j++) {
dtoxy(&cc, j);
if(goodpos(cc.x, cc.y, mtmp->data)) goto dognext;
}
for(j = (i + 6)%8; j < (i + 2)%8; j++) {
dtoxy(&cc, j);
if(goodpos(cc.x, cc.y, mtmp->data)) goto dognext;
}
cc.x = mtmp->mx;
cc.y = mtmp->my;
dognext:
remove_monster(mtmp->mx, mtmp->my);
place_monster(mtmp, cc.x, cc.y);
pmon(mtmp);
set_apparxy(mtmp);
}
#endif
return(1);
}
#endif /* OVL0 */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.