boolean can_reach_floor(void)
{
return (boolean)(!u.uswallow &&
/* Restricted/unskilled riders can't reach the floor */
!(u.usteed && P_SKILL(P_RIDING) < P_BASIC) &&
(!Levitation ||
Is_airlevel(&u.uz) || Is_waterlevel(&u.uz)));
}
static void
cast_protection(void)
{
int loglev = 0;
int l = u.ulevel;
int natac = get_player_ac() + u.uspellprot;
int gain;
/* loglev=log2(u.ulevel)+1 (1..5) */
while (l) {
loglev++;
l /= 2;
}
/*
* The more u.uspellprot you already have, the less you get,
* and the better your natural ac, the less you get.
*
* LEVEL AC SPELLPROT from sucessive SPE_PROTECTION casts
* 1 10 0, 1, 2, 3, 4
* 1 0 0, 1, 2, 3
* 1 -10 0, 1, 2
* 2-3 10 0, 2, 4, 5, 6, 7, 8
* 2-3 0 0, 2, 4, 5, 6
* 2-3 -10 0, 2, 3, 4
* 4-7 10 0, 3, 6, 8, 9, 10, 11, 12
* 4-7 0 0, 3, 5, 7, 8, 9
* 4-7 -10 0, 3, 5, 6
* 7-15 -10 0, 3, 5, 6
* 8-15 10 0, 4, 7, 10, 12, 13, 14, 15, 16
* 8-15 0 0, 4, 7, 9, 10, 11, 12
* 8-15 -10 0, 4, 6, 7, 8
* 16-30 10 0, 5, 9, 12, 14, 16, 17, 18, 19, 20
* 16-30 0 0, 5, 9, 11, 13, 14, 15
* 16-30 -10 0, 5, 8, 9, 10
*/
gain = loglev - (int)u.uspellprot / (4 - min(3, (10 - natac) / 10));
if (gain > 0) {
if (!Blind) {
const char *hgolden = hcolor("golden");
if (u.uspellprot)
pline("The %s haze around you becomes more dense.", hgolden);
else
pline("The %s around you begins to shimmer with %s haze.",
(Underwater || Is_waterlevel(&u.uz)) ? "water" :
Engulfed ? mbodypart(u.ustuck, STOMACH) :
IS_STWALL(level->locations[u.ux][u.uy].typ) ? "stone" :
"air",
an(hgolden));
}
u.uspellprot += gain;
u.uspmtime =
P_SKILL(spell_skilltype(SPE_PROTECTION)) == P_EXPERT ? 20 : 10;
if (!u.usptime)
u.usptime = u.uspmtime;
} else {
pline("Your %s feels warm for a moment.", body_part(SKIN));
}
}
int
spelleffects(int spell, boolean atme, const struct nh_cmd_arg *arg)
{
int energy, damage, chance, n, intell;
int skill, role_skill;
boolean confused = (Confusion != 0);
struct obj *pseudo;
boolean dummy;
coord cc;
schar dx = 0, dy = 0, dz = 0;
if (!SPELL_IS_FROM_SPELLBOOK(spell)) {
/* At the moment, we implement this via calling the code for the
shortcut command. Eventually, it would make sense to invert this
(and make the shortcut commands wrappers for spelleffects). */
switch (spellid(spell)) {
case SPID_PRAY:
return dopray(arg);
case SPID_TURN:
return doturn(arg);
case SPID_RLOC:
return dotele(arg);
case SPID_JUMP:
return dojump(arg);
case SPID_MONS:
return domonability(arg);
default:
impossible("Unknown spell number %d?", spellid(spell));
return 0;
}
}
/*
* Find the skill the hero has in a spell type category.
* See spell_skilltype for categories.
*/
skill = spell_skilltype(spellid(spell));
role_skill = P_SKILL(skill);
/* Get the direction or target, if applicable.
We want to do this *before* determining spell success, both for interface
consistency and to cut down on needless mksobj calls. */
switch (spellid(spell)) {
/* These spells ask the user to target a specific space. */
case SPE_CONE_OF_COLD:
case SPE_FIREBALL:
/* If Skilled or better, get a specific space. */
if (role_skill >= P_SKILLED) {
if (throwspell(&dx, &dy, arg)) {
dz = 0;
break;
}
else {
/* Decided not to target anything. Abort the spell. */
pline("Spell canceled.");
return 0;
}
}
/* If not Skilled, fall through. */
/* These spells ask the user to target a direction. */
case SPE_FORCE_BOLT:
case SPE_SLEEP:
case SPE_MAGIC_MISSILE:
case SPE_KNOCK:
case SPE_SLOW_MONSTER:
case SPE_WIZARD_LOCK:
case SPE_DIG:
case SPE_TURN_UNDEAD:
case SPE_POLYMORPH:
case SPE_TELEPORT_AWAY:
case SPE_CANCELLATION:
case SPE_FINGER_OF_DEATH:
case SPE_HEALING:
case SPE_EXTRA_HEALING:
case SPE_DRAIN_LIFE:
case SPE_STONE_TO_FLESH:
if (atme)
dx = dy = dz = 0;
else if (!getargdir(arg, NULL, &dx, &dy, &dz)) {
/* getdir cancelled, abort */
pline("Spell canceled.");
return 0;
}
break;
case SPE_JUMPING:
if(!get_jump_coords(arg, &cc, max(role_skill, 1))) {
/* No jumping after all, I guess. */
pline("Spell canceled.");
return 0;
}
break;
/* The rest of the spells don't have targeting. */
default:
break;
}
/* Spell casting no longer affects knowledge of the spell. A decrement of
spell knowledge is done every turn. */
if (spellknow(spell) <= 0) {
pline("Your knowledge of this spell is twisted.");
pline("It invokes nightmarish images in your mind...");
spell_backfire(spell);
return 0;
} else if (spellknow(spell) <= 200) { /* 1% */
pline("You strain to recall the spell.");
} else if (spellknow(spell) <= 1000) { /* 5% */
pline("Your knowledge of this spell is growing faint.");
}
energy = (spellev(spell) * 5); /* 5 <= energy <= 35 */
if (u.uhunger <= 10 && spellid(spell) != SPE_DETECT_FOOD) {
pline("You are too hungry to cast that spell.");
return 0;
} else if (ACURR(A_STR) < 4) {
pline("You lack the strength to cast spells.");
return 0;
} else
if (check_capacity
("Your concentration falters while carrying so much stuff.")) {
return 1;
} else if (!freehand()) {
pline("Your arms are not free to cast!");
return 0;
}
if (Uhave_amulet) {
pline("You feel the amulet draining your energy away.");
energy += rnd(2 * energy);
}
if (energy > u.uen) {
pline("You don't have enough energy to cast that spell.");
return 0;
} else {
if (spellid(spell) != SPE_DETECT_FOOD) {
int hungr = energy * 2;
/*
* If hero is a wizard, their current intelligence
* (bonuses + temporary + current)
* affects hunger reduction in casting a spell.
* 1. int = 17-18 no reduction
* 2. int = 16 1/4 hungr
* 3. int = 15 1/2 hungr
* 4. int = 1-14 normal reduction
* The reason for this is:
* a) Intelligence affects the amount of exertion
* in thinking.
* b) Wizards have spent their life at magic and
* understand quite well how to cast spells.
*/
intell = acurr(A_INT);
if (!Role_if(PM_WIZARD))
intell = 10;
if (intell >= 17)
hungr = 0;
else if (intell == 16)
hungr /= 4;
else if (intell == 15)
hungr /= 2;
/* don't put player (quite) into fainting from casting a spell,
particularly since they might not even be hungry at the
beginning; however, this is low enough that they must eat before
casting anything else except detect food */
if (hungr > u.uhunger - 3)
hungr = u.uhunger - 3;
morehungry(hungr);
}
}
chance = percent_success(spell);
if (confused || (rnd(100) > chance)) {
pline("You fail to cast the spell correctly.");
u.uen -= energy / 2;
return 1;
}
u.uen -= energy;
/* pseudo is a temporary "false" object containing the spell stats */
pseudo = mktemp_sobj(level, spellid(spell));
pseudo->blessed = pseudo->cursed = 0;
pseudo->quan = 20L; /* do not let useup get it */
switch (pseudo->otyp) {
/*
* At first spells act as expected. As the hero increases in skill
* with the appropriate spell type, some spells increase in their
* effects, e.g. more damage, further distance, and so on, without
* additional cost to the spellcaster.
*/
case SPE_CONE_OF_COLD:
case SPE_FIREBALL:
if (role_skill >= P_SKILLED) {
cc.x = dx;
cc.y = dy;
n = rnd(8) + 1;
while (n--) {
if (!dx && !dy && !dz) {
if ((damage = zapyourself(pseudo, TRUE)) != 0)
losehp(damage, msgprintf(
"zapped %sself with an exploding spell",
uhim()));
} else {
explode(dx, dy, pseudo->otyp - SPE_MAGIC_MISSILE + 10,
u.ulevel / 2 + 1 + spell_damage_bonus(), 0,
(pseudo->otyp ==
SPE_CONE_OF_COLD) ? EXPL_FROSTY : EXPL_FIERY,
NULL, 0);
}
dx = cc.x + rnd(3) - 2;
dy = cc.y + rnd(3) - 2;
if (!isok(dx, dy) || !cansee(dx, dy) ||
IS_STWALL(level->locations[dx][dy].typ) || Engulfed) {
/* Spell is reflected back to center */
dx = cc.x;
dy = cc.y;
}
}
break;
}
/* else fall through... */
/* these spells are all duplicates of wand effects */
case SPE_FORCE_BOLT:
case SPE_SLEEP:
case SPE_MAGIC_MISSILE:
case SPE_KNOCK:
case SPE_SLOW_MONSTER:
case SPE_WIZARD_LOCK:
case SPE_DIG:
case SPE_TURN_UNDEAD:
case SPE_POLYMORPH:
case SPE_TELEPORT_AWAY:
case SPE_CANCELLATION:
case SPE_FINGER_OF_DEATH:
case SPE_LIGHT:
case SPE_DETECT_UNSEEN:
case SPE_HEALING:
case SPE_EXTRA_HEALING:
case SPE_DRAIN_LIFE:
case SPE_STONE_TO_FLESH:
if (objects[pseudo->otyp].oc_dir != NODIR) {
if (!dx && !dy && !dz) {
if ((damage = zapyourself(pseudo, TRUE)) != 0) {
losehp(damage, msgprintf("zapped %sself with a spell",
uhim()));
}
} else
weffects(pseudo, dx, dy, dz);
} else
weffects(pseudo, 0, 0, 0);
update_inventory(); /* spell may modify inventory */
break;
/* these are all duplicates of scroll effects */
case SPE_REMOVE_CURSE:
case SPE_CONFUSE_MONSTER:
case SPE_DETECT_FOOD:
case SPE_CAUSE_FEAR:
/* high skill yields effect equivalent to blessed scroll */
if (role_skill >= P_SKILLED)
pseudo->blessed = 1;
/* fall through */
case SPE_CHARM_MONSTER:
case SPE_MAGIC_MAPPING:
case SPE_CREATE_MONSTER:
case SPE_IDENTIFY:
seffects(pseudo, &dummy);
break;
/* these are all duplicates of potion effects */
case SPE_HASTE_SELF:
case SPE_DETECT_TREASURE:
case SPE_DETECT_MONSTERS:
case SPE_LEVITATION:
case SPE_RESTORE_ABILITY:
/* high skill yields effect equivalent to blessed potion */
if (role_skill >= P_SKILLED)
pseudo->blessed = 1;
/* fall through */
case SPE_INVISIBILITY:
peffects(pseudo);
break;
case SPE_CURE_BLINDNESS:
healup(0, 0, FALSE, TRUE);
break;
case SPE_CURE_SICKNESS:
if (Sick)
pline("You are no longer ill.");
if (Slimed) {
pline("The slime disappears!");
Slimed = 0;
}
healup(0, 0, TRUE, FALSE);
break;
case SPE_CREATE_FAMILIAR:
make_familiar(NULL, u.ux, u.uy, FALSE);
break;
case SPE_CLAIRVOYANCE:
if (!BClairvoyant)
do_vicinity_map();
/* at present, only one thing blocks clairvoyance */
else if (uarmh && uarmh->otyp == CORNUTHAUM)
pline("You sense a pointy hat on top of your %s.", body_part(HEAD));
break;
case SPE_PROTECTION:
cast_protection();
break;
case SPE_JUMPING:
jump_to_coords(&cc);
break;
default:
impossible("Unknown spell %d attempted.", spell);
obfree(pseudo, NULL);
return 0;
}
/* gain skill for successful cast */
use_skill(skill, spellev(spell));
obfree(pseudo, NULL); /* now, get rid of it */
return 1;
}
int
use_saddle(struct obj *otmp, const struct nh_cmd_arg *arg)
{
struct monst *mtmp;
const struct permonst *ptr;
int chance;
const char *s;
schar dx, dy, dz;
/* Can you use it? */
if (nohands(youmonst.data)) {
pline("You have no hands!"); /* not `body_part(HAND)' */
return 0;
} else if (!freehand()) {
pline("You have no free %s.", body_part(HAND));
return 0;
}
/* Select an animal */
if (Engulfed || Underwater || !getargdir(arg, NULL, &dx, &dy, &dz)) {
pline("Never mind.");
return 0;
}
if (!dx && !dy) {
pline("Saddle yourself? Very funny...");
return 0;
}
if (!isok(u.ux + dx, u.uy + dy) ||
!((mtmp = m_at(level, u.ux + dx, u.uy + dy))) || !canspotmon(mtmp)) {
if (knownwormtail(u.ux + dx, u.uy + dy))
pline("It's hard to strap a saddle to a tail.");
else
pline("I see nobody there.");
return 0;
}
/* Is this a valid monster? */
if (mtmp->misc_worn_check & W_MASK(os_saddle) ||
which_armor(mtmp, os_saddle)) {
pline("%s doesn't need another one.", Monnam(mtmp));
return 0;
}
ptr = mtmp->data;
if (!uarmg && touched_monster(ptr - mons)) {
pline("You touch %s.", mon_nam(mtmp));
instapetrify(killer_msg(STONING, msgcat("attempting to saddle ",
an(mtmp->data->mname))));
}
if (ptr == &mons[PM_INCUBUS] || ptr == &mons[PM_SUCCUBUS]) {
pline("Shame on you!");
exercise(A_WIS, FALSE);
return 1;
}
if (mtmp->isminion || mtmp->isshk || mtmp->ispriest || mtmp->isgd ||
mtmp->iswiz) {
pline("I think %s would mind.", mon_nam(mtmp));
return 0;
}
if (!can_saddle(mtmp)) {
pline("You can't saddle such a creature.");
return 0;
}
/* Calculate your chance */
chance = ACURR(A_DEX) + ACURR(A_CHA) / 2 + 2 * mtmp->mtame;
chance += u.ulevel * (mtmp->mtame ? 20 : 5);
if (!mtmp->mtame)
chance -= 10 * mtmp->m_lev;
if (Role_if(PM_KNIGHT))
chance += 20;
switch (P_SKILL(P_RIDING)) {
case P_ISRESTRICTED:
case P_UNSKILLED:
default:
chance -= 20;
break;
case P_BASIC:
break;
case P_SKILLED:
chance += 15;
break;
case P_EXPERT:
chance += 30;
break;
}
if (Confusion || Fumbling || Glib)
chance -= 20;
else if (uarmg && (s = OBJ_DESCR(objects[uarmg->otyp])) != NULL &&
!strncmp(s, "riding ", 7))
/* Bonus for wearing "riding" (but not fumbling) gloves */
chance += 10;
else if (uarmf && (s = OBJ_DESCR(objects[uarmf->otyp])) != NULL &&
!strncmp(s, "riding ", 7))
/* ... or for "riding boots" */
chance += 10;
if (otmp->cursed)
chance -= 50;
/* steed becomes alert if possible */
maybewakesteed(mtmp);
/* Make the attempt */
if (rn2(100) < chance) {
pline("You put the saddle on %s.", mon_nam(mtmp));
if (otmp->owornmask)
remove_worn_item(otmp, FALSE);
freeinv(otmp);
/* mpickobj may free otmp it if merges, but we have already checked for
a saddle above, so no merger should happen */
mpickobj(mtmp, otmp);
mtmp->misc_worn_check |= W_MASK(os_saddle);
otmp->owornmask = W_MASK(os_saddle);
otmp->leashmon = mtmp->m_id;
update_mon_intrinsics(mtmp, otmp, TRUE, FALSE);
} else
pline("%s resists!", Monnam(mtmp));
return 1;
}
