/* return TRUE if the caller needs to place the ball and chain down again
*
* Should not be called while swallowed. Should be called before movement,
* because we might want to move the ball or chain to the hero's old position.
*
* It is called if we are moving. It is also called if we are teleporting
* *if* the ball doesn't move and we thus must drag the chain. It is not
* called for ordinary teleportation.
*
* allow_drag is only used in the ugly special case where teleporting must
* drag the chain, while an identical-looking movement must drag both the ball
* and chain.
*/
boolean
drag_ball(xchar x, xchar y, int *bc_control, xchar * ballx, xchar * bally,
xchar * chainx, xchar * chainy, boolean * cause_delay,
boolean allow_drag)
{
struct trap *t = NULL;
boolean already_in_rock;
*ballx = uball->ox;
*bally = uball->oy;
*chainx = uchain->ox;
*chainy = uchain->oy;
*bc_control = 0;
*cause_delay = FALSE;
if (dist2(x, y, uchain->ox, uchain->oy) <= 2) { /* nothing moved */
move_bc(1, *bc_control, *ballx, *bally, *chainx, *chainy);
return TRUE;
}
/* only need to move the chain? */
if (carried(uball) || distmin(x, y, uball->ox, uball->oy) <= 2) {
xchar oldchainx = uchain->ox, oldchainy = uchain->oy;
*bc_control = BC_CHAIN;
move_bc(1, *bc_control, *ballx, *bally, *chainx, *chainy);
if (carried(uball)) {
/* move chain only if necessary */
if (distmin(x, y, uchain->ox, uchain->oy) > 1) {
*chainx = u.ux;
*chainy = u.uy;
}
return TRUE;
}
#define CHAIN_IN_MIDDLE(chx, chy) \
(distmin(x, y, chx, chy) <= 1 && \
distmin(chx, chy, uball->ox, uball->oy) <= 1)
#define IS_CHAIN_ROCK(x,y) \
(IS_ROCK(level->locations[x][y].typ) || \
(IS_DOOR(level->locations[x][y].typ) && \
(level->locations[x][y].doormask & (D_CLOSED|D_LOCKED))))
/* Don't ever move the chain into solid rock. If we have to, then instead
* undo the move_bc() and jump to the drag ball code. Note that this also
* means the "cannot carry and drag" message will not appear, since unless we
* moved at least two squares there is no possibility of the chain position
* being in solid rock.
*/
#define SKIP_TO_DRAG { *chainx = oldchainx; *chainy = oldchainy; \
move_bc(0, *bc_control, *ballx, *bally, *chainx, *chainy); \
goto drag; }
if (IS_CHAIN_ROCK(u.ux, u.uy) || IS_CHAIN_ROCK(*chainx, *chainy)
|| IS_CHAIN_ROCK(uball->ox, uball->oy))
already_in_rock = TRUE;
else
already_in_rock = FALSE;
switch (dist2(x, y, uball->ox, uball->oy)) {
/* two spaces diagonal from ball, move chain inbetween */
case 8:
*chainx = (uball->ox + x) / 2;
*chainy = (uball->oy + y) / 2;
if (IS_CHAIN_ROCK(*chainx, *chainy) && !already_in_rock)
SKIP_TO_DRAG;
break;
/* player is distance 2/1 from ball; move chain to one of the two
spaces between @ __ 0 */
case 5:{
xchar tempx, tempy, tempx2, tempy2;
/* find position closest to current position of chain */
/* no effect if current position is already OK */
if (abs(x - uball->ox) == 1) {
tempx = x;
tempx2 = uball->ox;
tempy = tempy2 = (uball->oy + y) / 2;
} else {
tempx = tempx2 = (uball->ox + x) / 2;
tempy = y;
tempy2 = uball->oy;
}
if (IS_CHAIN_ROCK(tempx, tempy) &&
!IS_CHAIN_ROCK(tempx2, tempy2) && !already_in_rock) {
if (allow_drag) {
/* Avoid pathological case *if* not teleporting: 0 0_
_X move northeast -----> X@ @ */
if (dist2(u.ux, u.uy, uball->ox, uball->oy) == 5 &&
dist2(x, y, tempx, tempy) == 1)
SKIP_TO_DRAG;
/* Avoid pathological case *if* not teleporting: 0 0 _X
move east -----> X_ @ @ */
if (dist2(u.ux, u.uy, uball->ox, uball->oy) == 4 &&
dist2(x, y, tempx, tempy) == 2)
SKIP_TO_DRAG;
}
*chainx = tempx2;
*chainy = tempy2;
} else if (!IS_CHAIN_ROCK(tempx, tempy) &&
IS_CHAIN_ROCK(tempx2, tempy2) && !already_in_rock) {
if (allow_drag) {
if (dist2(u.ux, u.uy, uball->ox, uball->oy) == 5 &&
dist2(x, y, tempx2, tempy2) == 1)
SKIP_TO_DRAG;
if (dist2(u.ux, u.uy, uball->ox, uball->oy) == 4 &&
dist2(x, y, tempx2, tempy2) == 2)
SKIP_TO_DRAG;
}
*chainx = tempx;
*chainy = tempy;
} else if (IS_CHAIN_ROCK(tempx, tempy) &&
IS_CHAIN_ROCK(tempx2, tempy2) && !already_in_rock) {
SKIP_TO_DRAG;
} else if (dist2(tempx, tempy, uchain->ox, uchain->oy) <
dist2(tempx2, tempy2, uchain->ox, uchain->oy) ||
((dist2(tempx, tempy, uchain->ox, uchain->oy) ==
dist2(tempx2, tempy2, uchain->ox, uchain->oy)) &&
rn2(2))) {
*chainx = tempx;
*chainy = tempy;
} else {
*chainx = tempx2;
*chainy = tempy2;
}
break;
}
/* ball is two spaces horizontal or vertical from player; move */
/* chain inbetween *unless* current chain position is OK */
case 4:
if (CHAIN_IN_MIDDLE(uchain->ox, uchain->oy))
break;
*chainx = (x + uball->ox) / 2;
*chainy = (y + uball->oy) / 2;
if (IS_CHAIN_ROCK(*chainx, *chainy) && !already_in_rock)
SKIP_TO_DRAG;
break;
/* ball is one space diagonal from player. Check for the following
special case: @ _ moving southwest becomes @_ 0 0 (This will
also catch teleporting that happens to resemble this case, but
oh well.) Otherwise fall through. */
case 2:
if (dist2(x, y, uball->ox, uball->oy) == 2 &&
dist2(x, y, uchain->ox, uchain->oy) == 4) {
if (uchain->oy == y)
*chainx = uball->ox;
else
*chainy = uball->oy;
if (IS_CHAIN_ROCK(*chainx, *chainy) && !already_in_rock)
SKIP_TO_DRAG;
break;
}
/* fall through */
case 1:
case 0:
/* do nothing if possible */
if (CHAIN_IN_MIDDLE(uchain->ox, uchain->oy))
break;
/* otherwise try to drag chain to player's old position */
if (CHAIN_IN_MIDDLE(u.ux, u.uy)) {
*chainx = u.ux;
*chainy = u.uy;
break;
}
/* otherwise use player's new position (they must have teleported,
for this to happen) */
*chainx = x;
*chainy = y;
break;
default:
impossible("bad chain movement");
break;
}
#undef SKIP_TO_DRAG
#undef IS_CHAIN_ROCK
#undef CHAIN_IN_MIDDLE
return TRUE;
}
drag:
if (near_capacity() > SLT_ENCUMBER && dist2(x, y, u.ux, u.uy) <= 2) {
pline("You cannot %sdrag the heavy iron ball.",
invent ? "carry all that and also " : "");
action_completed();
return FALSE;
}
if ((is_pool(level, uchain->ox, uchain->oy) &&
/* water not mere continuation of previous water */
(level->locations[uchain->ox][uchain->oy].typ == POOL ||
!is_pool(level, uball->ox, uball->oy) ||
level->locations[uball->ox][uball->oy].typ == POOL))
|| ((t = t_at(level, uchain->ox, uchain->oy)) &&
(t->ttyp == PIT || t->ttyp == SPIKED_PIT || t->ttyp == HOLE ||
t->ttyp == TRAPDOOR))) {
if (Levitation) {
pline("You feel a tug from the iron ball.");
if (t)
t->tseen = 1;
} else {
struct monst *victim;
pline("You are jerked back by the iron ball!");
if ((victim = m_at(level, uchain->ox, uchain->oy)) != 0) {
int tmp;
tmp = -2 + Luck + find_mac(victim);
tmp += omon_adj(victim, uball, TRUE);
if (tmp >= rnd(20))
hmon(victim, uball, 1);
else
miss(xname(uball), victim);
} /* now check again in case mon died */
if (!m_at(level, uchain->ox, uchain->oy)) {
u.ux = uchain->ox;
u.uy = uchain->oy;
newsym(u.ux0, u.uy0);
}
action_interrupted();
*bc_control = BC_BALL;
move_bc(1, *bc_control, *ballx, *bally, *chainx, *chainy);
*ballx = uchain->ox;
*bally = uchain->oy;
move_bc(0, *bc_control, *ballx, *bally, *chainx, *chainy);
spoteffects(TRUE);
return FALSE;
}
}
*bc_control = BC_BALL | BC_CHAIN;
move_bc(1, *bc_control, *ballx, *bally, *chainx, *chainy);
if (dist2(x, y, u.ux, u.uy) > 2) {
/* Awful case: we're still in range of the ball, so we thought we could
only move the chain, but it turned out that the target square for
the chain was rock, so we had to drag it instead. But we can't drag
it either, because we teleported and are more than one square from
our old position. Revert to the teleport behavior. */
*ballx = *chainx = x;
*bally = *chainy = y;
} else {
*ballx = uchain->ox;
*bally = uchain->oy;
*chainx = u.ux;
*chainy = u.uy;
}
*cause_delay = TRUE;
return TRUE;
}
int
dothrow()
{
struct obj *obj;
struct monst *mon;
int tmp;
obj = getobj("#)", "throw"); /* it is also possible to throw food */
/* (or jewels, or iron balls ... ) */
if(!obj || !getdir(1)) /* ask "in what direction?" */
return(0);
if(obj->owornmask & (W_ARMOR | W_RING)){
pline("You can't throw something you are wearing.");
return(0);
}
u_wipe_engr(2);
if(obj == uwep){
if(obj->cursed){
pline("Your weapon is welded to your hand.");
return(1);
}
if(obj->quan > 1)
setuwep(splitobj(obj, 1));
else
setuwep((struct obj *) 0);
}
else if(obj->quan > 1)
(void) splitobj(obj, 1);
freeinv(obj);
if(u.uswallow) {
mon = u.ustuck;
bhitpos.x = mon->mx;
bhitpos.y = mon->my;
} else if(u.dz) {
if(u.dz < 0) {
pline("%s hits the ceiling, then falls back on top of your head.",
Doname(obj)); /* note: obj->quan == 1 */
if(obj->olet == POTION_SYM)
potionhit(&youmonst, obj);
else {
if(uarmh) pline("Fortunately, you are wearing a helmet!");
losehp(uarmh ? 1 : rnd((int)(obj->owt)), "falling object");
dropy(obj);
}
} else {
pline("%s hits the floor.", Doname(obj));
if(obj->otyp == EXPENSIVE_CAMERA) {
pline("It is shattered in a thousand pieces!");
obfree(obj, Null(obj));
} else if(obj->otyp == EGG) {
pline("\"Splash!\"");
obfree(obj, Null(obj));
} else if(obj->olet == POTION_SYM) {
pline("The flask breaks, and you smell a peculiar odor ...");
potionbreathe(obj);
obfree(obj, Null(obj));
} else {
dropy(obj);
}
}
return(1);
} else if(obj->otyp == BOOMERANG) {
mon = boomhit(u.dx, u.dy);
if(mon == &youmonst) { /* the thing was caught */
(void) addinv(obj);
return(1);
}
} else {
if(obj->otyp == PICK_AXE && shkcatch(obj))
return(1);
mon = bhit(u.dx, u.dy, (obj->otyp == ICE_BOX) ? 1 :
(!Punished || obj != uball) ? 8 : !u.ustuck ? 5 : 1,
obj->olet, NULL, NULL, obj);
}
if(mon) {
/* awake monster if sleeping */
wakeup(mon);
if(obj->olet == WEAPON_SYM) {
tmp = -1+u.ulevel+mon->data->ac+abon();
if(obj->otyp < ROCK) {
if(!uwep ||
uwep->otyp != obj->otyp+(BOW-ARROW))
tmp -= 4;
else {
tmp += uwep->spe;
}
} else
if(obj->otyp == BOOMERANG) tmp += 4;
tmp += obj->spe;
if(u.uswallow || tmp >= rnd(20)) {
if(hmon(mon,obj,1) == TRUE){
/* mon still alive */
#ifndef NOWORM
cutworm(mon,bhitpos.x,bhitpos.y,obj->otyp);
#endif /* NOWORM */
} else mon = 0;
/* weapons thrown disappear sometimes */
if(obj->otyp < BOOMERANG && rn2(3)) {
/* check bill; free */
obfree(obj, (struct obj *) 0);
return(1);
}
} else miss(objects[obj->otyp].oc_name, mon);
} else if(obj->otyp == HEAVY_IRON_BALL) {
tmp = -1+u.ulevel+mon->data->ac+abon();
if(!Punished || obj != uball) tmp += 2;
if(u.utrap) tmp -= 2;
if(u.uswallow || tmp >= rnd(20)) {
if(hmon(mon,obj,1) == FALSE)
mon = 0; /* he died */
} else miss("iron ball", mon);
} else if(obj->olet == POTION_SYM && u.ulevel > rn2(15)) {
potionhit(mon, obj);
return(1);
} else {
if(cansee(bhitpos.x,bhitpos.y))
pline("You miss %s.",monnam(mon));
else pline("You miss it.");
if(obj->olet == FOOD_SYM && mon->data->mlet == 'd')
if(tamedog(mon,obj)) return(1);
if(obj->olet == GEM_SYM && mon->data->mlet == 'u' &&
!mon->mtame){
if(obj->dknown && objects[obj->otyp].oc_name_known){
if(objects[obj->otyp].g_val > 0){
u.uluck += 5;
goto valuable;
} else {
pline("%s is not interested in your junk.",
Monnam(mon));
}
} else { /* value unknown to @ */
u.uluck++;
valuable:
if(u.uluck > LUCKMAX) /* dan@ut-ngp */
u.uluck = LUCKMAX;
pline("%s graciously accepts your gift.",
Monnam(mon));
mpickobj(mon, obj);
rloc(mon);
return(1);
}
}
}
}
/* the code following might become part of dropy() */
if(obj->otyp == CRYSKNIFE)
obj->otyp = WORM_TOOTH;
obj->ox = bhitpos.x;
obj->oy = bhitpos.y;
obj->nobj = fobj;
fobj = obj;
/* prevent him from throwing articles to the exit and escaping */
/* subfrombill(obj); */
stackobj(obj);
if(Punished && obj == uball &&
(bhitpos.x != u.ux || bhitpos.y != u.uy)){
freeobj(uchain);
unpobj(uchain);
if(u.utrap){
if(u.utraptype == TT_PIT)
pline("The ball pulls you out of the pit!");
else {
long side =
rn2(3) ? LEFT_SIDE : RIGHT_SIDE;
pline("The ball pulls you out of the bear trap.");
pline("Your %s leg is severely damaged.",
(side == LEFT_SIDE) ? "left" : "right");
set_wounded_legs(side, 500+rn2(1000));
losehp(2, "thrown ball");
}
u.utrap = 0;
}
unsee();
uchain->nobj = fobj;
fobj = uchain;
u.ux = uchain->ox = bhitpos.x - u.dx;
u.uy = uchain->oy = bhitpos.y - u.dy;
setsee();
(void) inshop();
}
if(cansee(bhitpos.x, bhitpos.y)) prl(bhitpos.x,bhitpos.y);
return(1);
}
/* u.dx and u.dy must be set */
bool
attack(struct monst *mtmp)
{
schar tmp;
boolean malive = TRUE;
struct permonst *mdat;
mdat = mtmp->data;
u_wipe_engr(3); /* andrew@orca: prevent unlimited pick-axe attacks */
if (mdat->mlet == 'L' && !mtmp->mfroz && !mtmp->msleep &&
!mtmp->mconf && mtmp->mcansee && !rn2(7) &&
(m_move(mtmp, 0) == 2 /* he died */ || /* he moved: */
mtmp->mx != u.ux + u.dx || mtmp->my != u.uy + u.dy))
return (FALSE);
if (mtmp->mimic) {
if (!u.ustuck && !mtmp->mflee)
u.ustuck = mtmp;
switch (levl[u.ux + u.dx][u.uy + u.dy].scrsym) {
case '+':
pline("The door actually was a Mimic.");
break;
case '$':
pline("The chest was a Mimic!");
break;
default:
pline("Wait! That's a Mimic!");
}
wakeup(mtmp); /* clears mtmp->mimic */
return (TRUE);
}
wakeup(mtmp);
if (mtmp->mhide && mtmp->mundetected) {
struct obj *obj;
mtmp->mundetected = 0;
if ((obj = o_at(mtmp->mx, mtmp->my)) && !Blind)
pline("Wait! There's a %s hiding under %s!",
mdat->mname, doname(obj));
return (TRUE);
}
tmp = u.uluck + u.ulevel + mdat->ac + abon();
if (uwep) {
if (uwep->olet == WEAPON_SYM || uwep->otyp == PICK_AXE)
tmp += uwep->spe;
if (uwep->otyp == TWO_HANDED_SWORD)
tmp -= 1;
else if (uwep->otyp == DAGGER)
tmp += 2;
else if (uwep->otyp == CRYSKNIFE)
tmp += 3;
else if (uwep->otyp == SPEAR &&
strchr("XDne", mdat->mlet))
tmp += 2;
}
if (mtmp->msleep) {
mtmp->msleep = 0;
tmp += 2;
}
if (mtmp->mfroz) {
tmp += 4;
if (!rn2(10))
mtmp->mfroz = 0;
}
if (mtmp->mflee)
tmp += 2;
if (u.utrap)
tmp -= 3;
/* with a lot of luggage, your agility diminishes */
tmp -= (inv_weight() + 40) / 20;
if (tmp <= rnd(20) && !u.uswallow) {
if (Blind)
pline("You miss it.");
else
pline("You miss %s.", monnam(mtmp));
} else {
/* we hit the monster; be careful: it might die! */
if ((malive = hmon(mtmp, uwep, 0)) == TRUE) {
/* monster still alive */
if (!rn2(25) && mtmp->mhp < mtmp->mhpmax / 2) {
mtmp->mflee = 1;
if (!rn2(3))
mtmp->mfleetim = rnd(100);
if (u.ustuck == mtmp && !u.uswallow)
u.ustuck = 0;
}
#ifndef NOWORM
if (mtmp->wormno)
cutworm(mtmp, u.ux + u.dx, u.uy + u.dy,
uwep ? uwep->otyp : 0);
#endif /* NOWORM */
}
if (mdat->mlet == 'a') {
if (rn2(2)) {
pline("You are splashed by the blob's acid!");
losehp_m(rnd(6), mtmp);
if (!rn2(30))
corrode_armor();
}
if (!rn2(6))
corrode_weapon();
}
}
if (malive && mdat->mlet == 'E' && canseemon(mtmp)
&& !mtmp->mcan && rn2(3)) {
if (mtmp->mcansee) {
pline("You are frozen by the floating eye's gaze!");
nomul((u.ulevel > 6 || rn2(4)) ? rn1(20, -21) : -200);
} else {
pline("The blinded floating eye cannot defend itself.");
if (!rn2(500))
if ((int)u.uluck > LUCKMIN)
u.uluck--;
}
}
return (TRUE);
}
