Release v0.1.3 2026-07-11
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Warren H
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import type { HealerClassId, MemberId, BossId, RunBuffId } from "../types";
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import { bossCoinDrop, type DifficultySlug, type MaterialStack } from "./loot";
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export type GearOwnerId = HealerClassId | Exclude<MemberId, "aelia">;
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export type GearSlotId = "weapon" | "helmet" | "chest" | "legs" | "feet";
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export type GearLevel = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10;
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export type GearStatId = "healingPower" | "damage" | "attackCooldown" | "maxHealth" | "moveSpeed" | "stunResist" | "hazardDamageTaken";
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export interface GearSlotProgress {
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level: GearLevel;
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}
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export interface ClassGearProgress {
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slots: Record<GearSlotId, GearSlotProgress>;
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infusionAbilityId: string | null;
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passiveInfusionId: RunBuffId | null;
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}
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export type GearProgress = Record<GearOwnerId, ClassGearProgress>;
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export interface GearRecipe {
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ownerId: GearOwnerId;
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slotId: GearSlotId;
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statId: GearStatId;
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primaryBossId: BossId;
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secondaryBossId: BossId;
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}
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export interface GearUpgradeCost {
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itemId: string;
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itemName: string;
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quantity: number;
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}
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export const GEAR_OWNER_ORDER: readonly GearOwnerId[] = ["priest", "druid", "shaman", "brann", "nia", "orin", "vale"];
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export const GEAR_SLOT_ORDER: readonly GearSlotId[] = ["weapon", "helmet", "chest", "legs", "feet"];
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export const MAX_GEAR_LEVEL: GearLevel = 10;
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export const GEAR_OWNER_LABELS: Record<GearOwnerId, string> = {
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priest: "Priest",
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druid: "Druid",
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shaman: "Shaman",
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brann: "Brann · Knight",
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nia: "Nia · Ranger",
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orin: "Orin · Mage",
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vale: "Vale · Rogue",
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};
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export const GEAR_SLOT_LABELS: Record<GearSlotId, string> = {
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weapon: "Weapon",
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helmet: "Helmet",
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chest: "Chest",
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legs: "Legs",
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feet: "Feet",
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};
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export const GEAR_STAT_LABELS: Record<GearStatId, string> = {
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healingPower: "Healing Power",
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damage: "Damage",
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attackCooldown: "Cooldown",
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maxHealth: "Max Health",
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moveSpeed: "Move Speed",
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stunResist: "Stun Resist",
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hazardDamageTaken: "Hazard Damage Taken",
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};
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type RecipeSeed = Record<GearSlotId, readonly [BossId, BossId]>;
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const HEALER_RECIPES: RecipeSeed = {
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weapon: ["vexa", "cindermaw"],
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helmet: ["cinderback-ricochet", "sandglass-scorpion"],
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chest: ["obsidian-ram-golem", "bulldrome"],
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legs: ["ember-mantis-duelist", "cinderback-ricochet"],
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feet: ["vexa", "sandglass-scorpion"],
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};
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const OWNER_RECIPE_SEEDS: Record<GearOwnerId, RecipeSeed> = {
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priest: HEALER_RECIPES,
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druid: HEALER_RECIPES,
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shaman: HEALER_RECIPES,
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brann: {
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weapon: ["obsidian-ram-golem", "bulldrome"],
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helmet: ["ember-mantis-duelist", "sandglass-scorpion"],
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chest: ["obsidian-ram-golem", "cindermaw"],
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legs: ["bulldrome", "cinderback-ricochet"],
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feet: ["sandglass-scorpion", "vexa"],
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},
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nia: {
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weapon: ["cinderback-ricochet", "cindermaw"],
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helmet: ["vexa", "sandglass-scorpion"],
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chest: ["bulldrome", "obsidian-ram-golem"],
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legs: ["cinderback-ricochet", "ember-mantis-duelist"],
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feet: ["sandglass-scorpion", "vexa"],
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},
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orin: {
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weapon: ["cindermaw", "vexa"],
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helmet: ["sandglass-scorpion", "cinderback-ricochet"],
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chest: ["vexa", "obsidian-ram-golem"],
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legs: ["cinderback-ricochet", "ember-mantis-duelist"],
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feet: ["sandglass-scorpion", "bulldrome"],
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},
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vale: {
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weapon: ["ember-mantis-duelist", "cindermaw"],
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helmet: ["cinderback-ricochet", "sandglass-scorpion"],
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chest: ["bulldrome", "obsidian-ram-golem"],
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legs: ["ember-mantis-duelist", "cinderback-ricochet"],
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feet: ["vexa", "sandglass-scorpion"],
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},
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};
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function statFor(ownerId: GearOwnerId, slotId: GearSlotId): GearStatId {
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if (slotId === "weapon") return ownerId === "priest" || ownerId === "druid" || ownerId === "shaman" ? "healingPower" : "damage";
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if (slotId === "helmet") return ownerId === "brann" ? "stunResist" : "attackCooldown";
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if (slotId === "chest") return "maxHealth";
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if (slotId === "legs") return "moveSpeed";
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return "hazardDamageTaken";
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}
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export const GEAR_RECIPES = Object.fromEntries(GEAR_OWNER_ORDER.map((ownerId) => [
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ownerId,
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Object.fromEntries(GEAR_SLOT_ORDER.map((slotId) => {
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const [primaryBossId, secondaryBossId] = OWNER_RECIPE_SEEDS[ownerId][slotId];
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return [slotId, { ownerId, slotId, statId: statFor(ownerId, slotId), primaryBossId, secondaryBossId }];
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})),
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])) as Record<GearOwnerId, Record<GearSlotId, GearRecipe>>;
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export function createDefaultGearProgress(): GearProgress {
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return Object.fromEntries(GEAR_OWNER_ORDER.map((ownerId) => [
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ownerId,
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{
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slots: Object.fromEntries(GEAR_SLOT_ORDER.map((slotId) => [slotId, { level: 0 }])),
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infusionAbilityId: null,
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passiveInfusionId: null,
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},
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])) as GearProgress;
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}
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export function gearUpgradeCosts(ownerId: GearOwnerId, slotId: GearSlotId, currentLevel: GearLevel): GearUpgradeCost[] {
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if (currentLevel >= MAX_GEAR_LEVEL) return [];
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const nextLevel = currentLevel + 1 as Exclude<GearLevel, 0>;
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const recipe = GEAR_RECIPES[ownerId][slotId];
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const difficultySlug = upgradeDifficultySlug(nextLevel);
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const primary = bossCoinDrop(recipe.primaryBossId, difficultySlug);
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const secondary = bossCoinDrop(recipe.secondaryBossId, difficultySlug);
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if (nextLevel === 1) return [{ itemId: primary.id, itemName: primary.name, quantity: 2 }];
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const primaryQuantity = nextLevel <= 3 ? 3 : nextLevel <= 5 ? nextLevel : nextLevel;
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const secondaryQuantity = nextLevel === 2 ? 1 : nextLevel === 3 ? 2 : nextLevel - 1;
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return [
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{ itemId: primary.id, itemName: primary.name, quantity: primaryQuantity },
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{ itemId: secondary.id, itemName: secondary.name, quantity: secondaryQuantity },
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];
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}
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export function canAffordGearUpgrade(inventory: readonly MaterialStack[], costs: readonly GearUpgradeCost[]): boolean {
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return costs.every((cost) => (inventory.find((item) => item.id === cost.itemId)?.quantity ?? 0) >= cost.quantity);
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}
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export function spendGearCosts(inventory: readonly MaterialStack[], costs: readonly GearUpgradeCost[]): MaterialStack[] {
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if (!canAffordGearUpgrade(inventory, costs)) {
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const missing = costs.find((cost) => (inventory.find((item) => item.id === cost.itemId)?.quantity ?? 0) < cost.quantity);
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throw new Error(missing ? `Need ${missing.quantity} ${missing.itemName}.` : "Missing gear materials.");
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}
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return inventory.flatMap((item) => {
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const cost = costs.find((entry) => entry.itemId === item.id);
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if (!cost) return [{ ...item }];
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const quantity = item.quantity - cost.quantity;
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return quantity > 0 ? [{ ...item, quantity }] : [];
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});
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}
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export function upgradeGearSlot(
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progress: GearProgress,
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inventory: readonly MaterialStack[],
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ownerId: GearOwnerId,
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slotId: GearSlotId,
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): { gearProgress: GearProgress; inventory: MaterialStack[] } {
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const currentLevel = progress[ownerId].slots[slotId].level;
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if (currentLevel >= MAX_GEAR_LEVEL) throw new Error(`${GEAR_SLOT_LABELS[slotId]} already at +${MAX_GEAR_LEVEL}.`);
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const costs = gearUpgradeCosts(ownerId, slotId, currentLevel);
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const inventoryAfter = spendGearCosts(inventory, costs);
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return {
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inventory: inventoryAfter,
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gearProgress: {
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...progress,
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[ownerId]: {
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...progress[ownerId],
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slots: {
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...progress[ownerId].slots,
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[slotId]: { level: currentLevel + 1 as GearLevel },
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},
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},
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},
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};
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}
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export function gearBonusText(statId: GearStatId, level: number): string {
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if (statId === "moveSpeed") return `+${formatPercent(level * 2.5)}%`;
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if (statId === "attackCooldown" || statId === "hazardDamageTaken") return `-${level * 3}%`;
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if (statId === "stunResist") return `-${level * 8}%`;
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return `+${level * 4}%`;
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}
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function formatPercent(value: number): string {
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return Number.isInteger(value) ? String(value) : value.toFixed(1);
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}
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// IWT2 parity: +6 through +10 return to Veteran coins while infusion costs use higher tiers.
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function upgradeDifficultySlug(level: Exclude<GearLevel, 0>): DifficultySlug {
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if (level <= 2) return "initiate";
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if (level >= 6) return "veteran";
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if (level === 3) return "veteran";
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if (level === 4) return "champion";
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return "mythic";
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}
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