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NetBSD/games/hack/hack.dog.c

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/* $NetBSD: hack.dog.c,v 1.12 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.dog.c,v 1.12 2011/08/07 06:03:45 dholland Exp $");
#endif /* not lint */
#include "hack.h"
#include "extern.h"
#include "hack.mfndpos.h"
#include "def.edog.h"
#include "def.mkroom.h"
const struct permonst li_dog =
{"little dog", 'd', 2, 18, 6, 1, 6, sizeof(struct edog)};
const struct permonst dog =
{"dog", 'd', 4, 16, 5, 1, 6, sizeof(struct edog)};
const struct permonst la_dog =
{"large dog", 'd', 6, 15, 4, 2, 4, sizeof(struct edog)};
static void initedog(struct monst *);
static int dogfood(struct obj *);
void
makedog(void)
{
struct monst *mtmp = makemon(&li_dog, u.ux, u.uy);
if (!mtmp)
return; /* dogs were genocided */
initedog(mtmp);
}
static void
initedog(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! */
void
losedogs(void)
{
struct monst *mtmp;
while ((mtmp = mydogs) != NULL) {
mydogs = mtmp->nmon;
mtmp->nmon = fmon;
fmon = mtmp;
mnexto(mtmp);
}
while ((mtmp = fallen_down) != NULL) {
fallen_down = mtmp->nmon;
mtmp->nmon = fmon;
fmon = mtmp;
rloc(mtmp);
}
}
void
keepdogs(void)
{
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) */
}
}
void
fall_down(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
static int
dogfood(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);
/* FALLTHROUGH */
case BALL_SYM:
case CHAIN_SYM:
case ROCK_SYM:
return (UNDEF);
}
}
/* return 0 (no move), 1 (move) or 2 (dead) */
int
dog_move(struct monst *mtmp, int after)
{
int nx, ny, omx, omy, appr, nearer, j;
int udist, chi = 0, i, whappr;
struct monst *mtmp2;
const struct permonst *mdat = mtmp->data;
struct edog *edog = EDOG(mtmp);
struct obj *obj;
struct trap *trap;
xchar cnt, chcnt, nix, niy;
schar dogroom, uroom;
xchar gx = 0, gy = 0, 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 ((unsigned) 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)) != NULL)
if (!strchr("0_", obj->olet)) {
if ((otyp = dogfood(obj)) <= CADAVER) {
nix = omx;
niy = omy;
goto eatobj;
}
if (obj->owt < 10 * mtmp->data->mlevel)
if ((unsigned) rn2(20) < edog->apport + 3)
if (rn2(udist) || !rn2((int) edog->apport)) {
freeobj(obj);
unpobj(obj);
/*
* if(levl[omx][omy].s
* crsym ==
* 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 > (unsigned)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)) {
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 == NULL)
panic("error in dog_move");
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 */
int
inroom(xchar x, xchar y)
{
#ifndef QUEST
int pos = 0;
while (rooms[pos].hx >= 0) {
if (rooms[pos].hx >= x - 1 && rooms[pos].lx <= x + 1 &&
rooms[pos].hy >= y - 1 && rooms[pos].ly <= y + 1)
return pos;
pos++;
}
#endif /* QUEST */
return (-1); /* not in room or on door */
}
int
tamedog(struct monst *mtmp, struct obj *obj)
{
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 || strchr(" &@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);
}
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