Release Healer Man 0.1.6

src/game/combatResources.ts

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+import {
+  createDeathKnightRunes,
+  type CombatResourcePoolState,
+  type DeathKnightRuneState,
+  type DeathKnightRuneType,
+} from "./combatActors";
+
+export const MANA_FIVE_SECOND_RULE_MS = 5_000;
+export const DEATH_KNIGHT_RUNE_RECHARGE_MS = 10_000;
+
+export interface CombatResourceAdvanceRules {
+  readonly inCombat: boolean;
+  readonly actorLevel: number;
+  readonly now: number;
+  readonly deltaSeconds: number;
+  readonly manaSpiritRegenerationPerSecond?: number;
+}
+export function advanceCombatResourcePool(
+  pool: CombatResourcePoolState,
+  rules: CombatResourceAdvanceRules,
+): CombatResourcePoolState {
+  const delta = Math.max(0, Math.min(1, Number.isFinite(rules.deltaSeconds) ? rules.deltaSeconds : 0));
+  let rate = pool.regenerationPerSecond;
+  if (pool.id === "mana" && rules.now - pool.lastSpentAt < MANA_FIVE_SECOND_RULE_MS) {
+    rate = Math.max(0, rate - Math.max(0, rules.manaSpiritRegenerationPerSecond ?? 0));
+  }
+  if ((pool.id === "rage" || pool.id === "runic-power") && !rules.inCombat) {
+    rate = pool.id === "rage" ? -3 : -2.5;
+  }
+  return Object.freeze({
+    ...pool,
+    current: Math.max(0, Math.min(pool.maximum, pool.current + rate * delta)),
+  });
+}
+
+export interface RuneCost {
+  readonly blood?: number;
+  readonly frost?: number;
+  readonly unholy?: number;
+}
+
+export function availableDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[],
+  now: number,
+): readonly DeathKnightRuneState[] {
+  return runes.filter((rune) => rune.readyAt <= now);
+}
+
+function runeMatches(rune: DeathKnightRuneState, type: Exclude<DeathKnightRuneType, "death">): boolean {
+  return rune.type === type || rune.type === "death";
+}
+
+export function spendDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[] | undefined,
+  cost: RuneCost,
+  now: number,
+  rechargeMs = DEATH_KNIGHT_RUNE_RECHARGE_MS,
+): readonly DeathKnightRuneState[] | null {
+  const current = runes?.length === 6 ? [...runes] : [...createDeathKnightRunes(now)];
+  const spent = new Set<number>();
+  for (const type of ["blood", "frost", "unholy"] as const) {
+    const count = Math.max(0, Math.trunc(cost[type] ?? 0));
+    for (let index = 0; index < count; index += 1) {
+      const candidate = current.find((rune) => (
+        !spent.has(rune.slot) && rune.readyAt <= now && runeMatches(rune, type)
+      ));
+      if (!candidate) return null;
+      spent.add(candidate.slot);
+    }
+  }
+  return Object.freeze(current.map((rune) => spent.has(rune.slot)
+    ? Object.freeze({ ...rune, readyAt: now + Math.max(1, rechargeMs) })
+    : rune));
+}
+
+export function activateDeathKnightRunes(
+  runes: readonly DeathKnightRuneState[],
+  count: number,
+): readonly DeathKnightRuneState[] {
+  let remaining = Math.max(0, Math.trunc(count));
+  return Object.freeze([...runes]
+    .sort((left, right) => right.readyAt - left.readyAt || left.slot - right.slot)
+    .map((rune) => {
+      if (remaining <= 0 || rune.readyAt <= 0) return rune;
+      remaining -= 1;
+      return Object.freeze({ ...rune, readyAt: 0 });
+    })
+    .sort((left, right) => left.slot - right.slot));
+}