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// Core artifact lookup, existence tracking, and property checks.
import { game } from './gstate.js';
import { artilist, NROFARTIFACTS, SPFX_ATTK, SPFX_DBONUS, SPFX_INTEL, SPFX_NOGEN, SPFX_RESTR, ART_GRIMTOOTH } from './artifacts.js';
import { rn2, rnd, c_d } from './rng.js';
import { Role_if, Race_if, Antimagic } from './macros.js';
import { is_covetous } from './mondata.js';
import { AD_PHYS, mons } from './monsters.js';
import { A_NONE, A_WIS, Has_contents, KILLED_BY, NON_PM, ONAME_RANDOM, W_ARTI, W_BALL, W_QUIVER, W_SADDLE, W_SWAPWEP } from './const.js';
import { Is_container, LEASH, OBJ_DESCR, TOOL_CLASS, WEAPON_CLASS } from './objects.js';
import { exercise } from './attrib.js';
import { losehp } from './hack.js';
import { pline, You } from './pline.js';
import { the, Tobjnam, xname } from './objnam.js';
import { fuzzymatch, s_suffix } from './hacklib.js';
import { carried } from './invent.js';
import { obj_shuffle_range } from './o_init.js';
import { bypass_obj, clear_bypasses, which_armor } from './worn.js';
// C ref: artifact.c:87 hack_artifacts()
function hack_artifacts() {
// TODO: fix alignment of gift artifacts based on urole/initalign
}
// C ref: artifact.c:110 init_artifacts()
export async function init_artifacts() {
game.artiexist = new Array(NROFARTIFACTS + 1).fill(false);
game.artidisco = [];
hack_artifacts();
}
// C ref: artifact.c:160 artiname(artinum) — get artifact name by index
export function artiname(artinum) {
if (artinum <= 0 || artinum > NROFARTIFACTS) return '';
return artilist[artinum]?.name || '';
}
// C ref: artifact.c:173 exist_artifact(otyp, name) — check if artifact exists
export function exist_artifact(otyp, name) {
for (let i = 1; i <= NROFARTIFACTS; i++) {
if (artilist[i].otyp === otyp && artilist[i].name === name)
return !!(game.artiexist?.[i]);
}
return false;
}
// C ref: artifact.c:205 nartifact_exist() — count existing artifacts
export function nartifact_exist() {
let ct = 0;
for (let i = 1; i <= NROFARTIFACTS; i++) {
if (game.artiexist?.[i]) ct++;
}
return ct;
}
// C ref: artifact.c:371 artifact_exists — mark/unmark artifact existence
// Called from oname() and mk_artifact(). Sets oartifact and artiexist[].
export function artifact_exists(otmp, name, mod, flgs) {
if (otmp && name) {
for (let m = 1; m <= NROFARTIFACTS && artilist[m].otyp; m++) {
if (artilist[m].otyp === otmp.otyp && artilist[m].name === name) {
otmp.oartifact = mod ? m : 0;
otmp.age = 0;
if (mod) {
// C ref: artifact.c:392 — default origin is ONAME_RANDOM
if (!(flgs & 0x007F)) // no origin bits set
flgs |= ONAME_RANDOM;
artifact_origin(otmp, flgs);
} else {
// uncreate
if (game.artiexist) game.artiexist[m] = false;
}
break;
}
}
}
}
// C ref: artifact.c:478 artifact_origin — set artifact tracking flags
// JS uses boolean artiexist[], so we just set exists = true.
function artifact_origin(otmp, aflags) {
const a = otmp.oartifact;
if (a) {
if (game.artiexist) game.artiexist[a] = true;
}
}
// C ref: artifact.c:172 mk_artifact — create a random artifact
// When alignment is A_NONE, converts otmp into a matching artifact.
// When alignment is specified, creates a new artifact of that alignment.
export function mk_artifact(otmp, alignment, max_giftvalue, adjust_spe) {
const by_align = (alignment !== A_NONE);
const o_typ = (by_align || !otmp) ? 0 : otmp.otyp;
const unique = !by_align && otmp && !!(game.objects[o_typ]?.oc_unique);
const eligible = [];
let n = 0, altn = 0;
const alteligible = [];
// C ref: artifact.c:190 — gather eligible artifacts
for (let m = 1; m <= NROFARTIFACTS && artilist[m].otyp; m++) {
const a = artilist[m];
if (game.artiexist?.[m])
continue;
if ((a.spfx & SPFX_NOGEN) || unique)
continue;
if (a.gift_value > max_giftvalue && !Role_if(a.role))
continue;
if (!by_align) {
// looking for a particular type of item
if (a.otyp === o_typ)
eligible[n++] = m;
continue;
}
// by_align path: looking for alignment-specific item for hero's role+race
// C ref: artifact.c:208 — check alignment and race compatibility
if ((a.alignment === alignment || a.alignment === A_NONE)
&& (a.race === NON_PM || !race_hostile(a.race))) {
if (Role_if(a.role)) {
// role-specific first choice — make it the only candidate
eligible[0] = m;
n = 1;
break;
}
// C ref: artifact.c:220 — skill compatibility check
let skill_compatibility = 3; // P_SKILLED
if (game.objects[a.otyp]?.oc_class === WEAPON_CLASS) {
let skill = game.objects[a.otyp]?.oc_skill ?? 0;
if (skill < 0) skill = -skill;
skill_compatibility = game.u?.weapon_skills?.[skill]?.max_skill ?? 0;
}
// C ref: artifact.c:230 — randomized eligibility check
if ((a.alignment !== A_NONE || (game.u?.ugifts ?? 0) > 0 || !rn2(3)) &&
(!rn2(4) || skill_compatibility >= 3 /*P_SKILLED*/ ||
(skill_compatibility >= 2 /*P_BASIC*/ && rn2(2)))) {
eligible[n++] = m;
} else {
if (!n)
alteligible[altn++] = m;
}
}
}
// C ref: artifact.c:254 — resort to fallback list if main list was empty
let candidates = eligible;
let count = n;
if (!n && altn) {
candidates = alteligible;
count = altn;
}
if (count) {
// C ref: artifact.c:259 — pick one at random
const m = candidates[rn2(count)];
const a = artilist[m];
if (by_align) {
// C ref: artifact.c:263 — create appropriate object from scratch
// This path requires mksobj which would be circular; for now
// the by_align path (divine gifts) is not called from mksobj_init.
// TODO: implement when pray.js gift path is ported
if (otmp) {
// dispose of original — not implemented yet
}
return null; // by_align not yet supported
}
// C ref: artifact.c:280-284 — christen the object
otmp.oeroded = 0;
otmp.oeroded2 = 0;
// Set name directly (can't call async oname from sync context)
if (!otmp.oextra) otmp.oextra = {};
otmp.oextra.oname = a.name;
otmp.oartifact = m;
artifact_origin(otmp, ONAME_RANDOM);
// C ref: artifact.c:285-295 — adjust spe for situational artifacts
if (adjust_spe) {
const new_spe = (otmp.spe || 0) + a.gen_spe;
if (new_spe >= -10 && new_spe < 10)
otmp.spe = new_spe;
}
} else {
// nothing appropriate found; return original object
if (by_align && otmp) {
return null;
}
}
// C ref: artifact.c:306 — permapoisoned check
if (otmp && permapoisoned(otmp))
otmp.opoisoned = true;
return otmp;
}
// C ref: artifact.c:2837 permapoisoned — is object permanently poisoned?
export function permapoisoned(obj) {
return !!(obj && obj.oartifact === ART_GRIMTOOTH);
}
// C ref: mondata.h:118 race_hostile — is race hostile to hero?
function race_hostile(pm) {
const hatemask = game.urace?.hatemask || 0;
const mflags2 = mons[pm]?.mflags2 ?? 0;
return (mflags2 & hatemask) !== 0;
}
// C ref: artifact.c:908 touch_artifact — can mon touch this artifact?
// Returns 1 if safe, 0 if evaded/blasted. Consumes RNG when blast check fires.
export async function touch_artifact(obj, mon) {
if (!obj?.oartifact) return 1;
const oart = artilist[obj.oartifact];
if (!oart || !oart.otyp) return 1;
const yours = (mon === game.youmonst);
const self_willed = !!(oart.spfx & SPFX_INTEL);
let badclass, badalign;
if (yours) {
badclass = self_willed
&& ((oart.role !== NON_PM && !Role_if(oart.role))
|| (oart.race !== NON_PM && !Race_if(oart.race)));
badalign = !!(oart.spfx & SPFX_RESTR)
&& oart.alignment !== A_NONE
&& (oart.alignment !== (game.u?.ualign?.type ?? 0)
|| (game.u?.ualign?.record ?? 0) < 0);
} else if (mon && !is_covetous(mon.data)) {
badclass = self_willed && oart.role !== NON_PM;
badalign = !!(oart.spfx & SPFX_RESTR) && oart.alignment !== A_NONE;
} else {
badclass = badalign = false;
}
// C ref: artifact.c:944-960 — blast check with RNG
if (((badclass || badalign) && self_willed)
|| (badalign && (!yours || !rn2(4)))) {
if (!yours) return 0;
// C ref: artifact.c:951 — hero blasted by artifact power
await You(`are blasted by ${s_suffix(the(xname(obj)))} power!`);
let dmg = c_d(Antimagic() ? 2 : 4, self_willed ? 10 : 4);
// C ref: artifact.c:955-956 — silver damage bonus for silver-hating hero
// TODO: Hate_silver check (requires ulycn/hates_silver)
const buf = `touching ${oart.name}`;
await losehp(dmg, buf, KILLED_BY);
exercise(A_WIS, false);
}
// C ref: artifact.c:963-970 — totally incompatible = evade
if (badclass && badalign && self_willed) {
if (yours) {
if (!carried(obj))
await pline(`${Tobjnam(obj, 'evade')} your grasp!`);
else
await pline(`${Tobjnam(obj, 'are')} beyond your control!`);
}
return 0;
}
return 1;
}
// C ref: artifact.c:691 spec_abon(weapon, mon) — artifact to-hit bonus
export function spec_abon(weapon, mon) {
if (!weapon?.oartifact) {
return 0;
}
const arti = artilist[weapon.oartifact];
if (!arti) {
return 0;
}
/* C ref: artifact.c:1010 spec_applies()
For artifacts without SPFX_DBONUS/SPFX_ATTK, special attacks apply
exactly when attk.adtyp is AD_PHYS. This covers Cleaver's rnd(3)
to-hit bonus path used by seed0362. */
const hasConditionalTargeting = !!(arti.spfx & (SPFX_DBONUS | SPFX_ATTK));
const applies = !hasConditionalTargeting && arti.attk?.adtyp === AD_PHYS;
if (applies && arti.attk?.damn) {
return rnd(arti.attk.damn);
}
return 0;
}
// C ref: artifact.c:1091 spec_dbon(weapon, mon, tmp) — artifact damage bonus
export function spec_dbon(weapon, mon, tmp) {
if (!weapon?.oartifact) {
return 0;
}
const arti = artilist[weapon.oartifact];
if (!arti) {
return 0;
}
/* Minimal C-faithful subset used by Cleaver:
artifacts without SPFX_DBONUS/SPFX_ATTK apply on AD_PHYS. */
const hasConditionalTargeting = !!(arti.spfx & (SPFX_DBONUS | SPFX_ATTK));
const applies = !hasConditionalTargeting && arti.attk?.adtyp === AD_PHYS;
if (!applies) {
return 0;
}
if (arti.attk?.damd) {
return rnd(arti.attk.damd);
}
return Math.max(tmp || 0, 1);
}
// C ref: artifact.c:1041 artifact_hit(magr, mdef, otmp, dmgptr, dieroll)
// Returns true if artifact special attack triggered.
export function artifact_hit(magr, mdef, otmp, dmgptr, dieroll) {
if (!otmp?.oartifact) return false;
// C ref: artifact.c:1470 — always add spec_dbon first.
if (dmgptr && typeof dmgptr.value === 'number') {
dmgptr.value += spec_dbon(otmp, mdef, dmgptr.value);
}
// TODO: full artifact hit effects/messages (Vorpal Blade beheading, etc.)
return false;
}
// C ref: artifact.c:1500 arti_speak(obj) — artifact speaks
export function arti_speak(obj) {
// TODO: port artifact speech
}
// ── is_quest_artifact: is this the current role's quest artifact? ──
export function is_quest_artifact(obj) {
if (!obj || !obj.oartifact) return false;
return obj.oartifact === game.urole?.questarti;
}
// ── any_quest_artifact: is this ANY role's quest artifact? ──
export function any_quest_artifact(obj) {
if (!obj?.oartifact) return false;
for (let i = 1; i <= NROFARTIFACTS; i++) {
const arti = artilist[i];
if (arti && arti.role >= 0 && obj.oartifact === i) return true;
}
return false;
}
// C: u_wield_art(artid) — check if player is wielding specific artifact
export function u_wield_art(artid) {
return game.u.uwep && game.u.uwep.oartifact === artid;
}
// C ref: artifact.c:516 spec_ability(otmp, abil) — does artifact have given spfx?
export function spec_ability(otmp, abil) {
if (!otmp?.oartifact) return false;
const arti = artilist[otmp.oartifact];
if (!arti) return false;
return !!(arti.spfx & abil);
}
// C ref: artifact.c:2508 retouch_object — artifact check when wielding/wearing
// Called from ready_weapon, setworn, etc. Calls touch_artifact internally.
export async function retouch_object(objRef, loseit) {
// C passes struct obj **objp; JS uses object ref directly
const obj = objRef?.obj || objRef;
if (!obj) return true;
// C ref: artifact.c:2520 — call touch_artifact
if (await touch_artifact(obj, game.youmonst)) {
// touch_artifact returned true — hero can handle it
return true;
}
// Hero can't handle the artifact
if (loseit) {
// Drop the object
}
return false;
}
// C ref: artifact.c:329 artifact_name — check if string is an artifact name
// Returns the canonical artifact name if found, null otherwise.
// Also sets otyp_p (output param) to the artifact's base object type.
export function artifact_name(name, otyp_p, fuzzy) {
if (!name) return null;
let nm = name;
if (nm.toLowerCase().startsWith('the ')) nm = nm.slice(4);
for (let i = 1; i < artilist.length && artilist[i].otyp; i++) {
let aname = artilist[i].name;
let cmp = aname;
if (cmp.toLowerCase().startsWith('the ')) cmp = cmp.slice(4);
if (fuzzy ? fuzzymatch(nm, cmp, " -", true) : nm.toLowerCase() === cmp.toLowerCase()) {
if (otyp_p) otyp_p.value = artilist[i].otyp;
return aname;
}
}
return null;
}
// fuzzymatch: imported from hacklib.js
// C ref: artifact.c get_artifact(otmp) — lookup artifact struct for object.
function get_artifact(obj) {
const idx = obj?.oartifact ?? 0;
if (!idx || idx < 0 || idx >= artilist.length) return null;
return artilist[idx] || null;
}
// C ref: artifact.c:575 restrict_name
// check whether hero can name an item with the given artifact name
export function restrict_name(otmp, name) {
if (!name) return false;
let aname = name;
if (aname.toLowerCase().startsWith('the ')) aname = aname.slice(4);
/* decide what types of objects are the same as otyp;
if it's been discovered, then only itself matches;
otherwise, include all other undiscovered objects
of the same class which have the same description
or share the same pool of shuffled descriptions */
const otyp = otmp.otyp;
const ocls = game.objects[otyp].oc_class;
const sametype = new Array(game.objects.length).fill(false);
sametype[otyp] = true;
if (!game.objects[otyp].oc_name_known) {
const odesc = OBJ_DESCR(game.objects[otyp]);
if (odesc) {
const { lo, hi } = obj_shuffle_range(otyp);
for (let i = game.bases[ocls]; i < game.objects.length; i++) {
if (game.objects[i].oc_class !== ocls) break;
if (!game.objects[i].oc_name_known
&& (i < lo || i > hi)
&& OBJ_DESCR(game.objects[i]) === odesc) {
sametype[i] = true;
}
}
for (let i = lo; i <= hi; i++) {
sametype[i] = true;
}
}
}
for (let i = 1; i < artilist.length && artilist[i].otyp; i++) {
const a = artilist[i];
let artname = a.name;
if (artname.toLowerCase().startsWith('the ')) artname = artname.slice(4);
if (artname.toLowerCase() === aname.toLowerCase()) {
return !sametype[a.otyp];
}
}
return false;
}
// C ref: artifact.c:2598 untouchable
// check whether hero can handle an item; if not, unwield/unwear and
// optionally drop it
async function untouchable(obj, drop_untouchable) {
if (!obj) return false;
const art = get_artifact(obj);
let beingworn = false, carryeffect = false, invoked = false;
const wearmask = ~(W_QUIVER | (game.u.twoweap ? 0 : W_SWAPWEP) | W_BALL);
beingworn = ((obj.owornmask & wearmask) !== 0
/* some items in use don't have any wornmask setting */
|| (obj.oclass === TOOL_CLASS
&& (obj.lamplit
|| (obj.otyp === LEASH && obj.leashmon)
|| (Is_container(obj) && Has_contents(obj)))));
if (art && art.name !== 'non-artifact') {
carryeffect = art.cary.adtyp || art.cspfx;
invoked = (art.inv_prop > 0 && art.inv_prop <= 50 /* LAST_PROP */
&& (game.u.uprops?.[art.inv_prop]?.extrinsic & W_ARTI) !== 0);
}
if (beingworn || carryeffect || invoked) {
const objRef = { v: obj };
if (!(await retouch_object(objRef, drop_untouchable))) {
const newObj = objRef.v;
if (invoked && newObj) {
// reverse #invoke; stub for now
}
return true;
}
}
return false;
}
// C ref: artifact.c:2640 retouch_equipment
// check all items currently in use (mostly worn) for touchability
let retouch_nesting = 0;
export async function retouch_equipment(dropflag) {
const g = game;
const u = g.u;
if (!retouch_nesting++) {
clear_bypasses();
}
const dropit = dropflag > 0;
if (u.twoweap) {
bypass_obj(u.uswapwep);
await untouchable(u.uswapwep, dropit);
}
if (u.uwep) {
bypass_obj(u.uwep);
await untouchable(u.uwep, dropit);
}
if (u.usteed) {
const saddle = which_armor(u.usteed, W_SADDLE);
if (saddle) {
if (await untouchable(saddle, false)) {
// TODO: saddle came off steed
}
}
}
const all_items = (dropflag === 1);
for (let obj = g.invent; obj; obj = obj.nobj) {
if (obj.owornmask && !obj.bypass) {
await untouchable(obj, all_items);
}
}
retouch_nesting--;
}
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