Update Healer Man server

src/app/dungeonRaceBot.ts

@@ -0,0 +1,39 @@
+import catalog from "../game/dungeonRaceBotCatalog.json";
+
+export type RaceBotTier = "novice" | "regular" | "veteran" | "elite";
+export type RaceBotSource = "wow" | "rom";
+export interface RaceBot {
+  readonly type: "bot";
+  readonly name: string;
+  readonly tier: RaceBotTier;
+  readonly source: RaceBotSource;
+  readonly roster: readonly { readonly name: string; readonly classId: string; readonly role: string }[];
+  readonly finishMs: number;
+  readonly milestones: readonly { readonly atMs: number; readonly progress: number; readonly label: string }[];
+}
+
+export function hashRaceSeed(value: string): number {
+  let hash = 2166136261;
+  for (const char of value) { hash ^= char.charCodeAt(0); hash = Math.imul(hash, 16777619); }
+  return hash >>> 0;
+}
+
+export function createRaceBot(seed: string, tierId: RaceBotTier, source: RaceBotSource): RaceBot {
+  const tier = catalog.tiers.find((entry) => entry.id === tierId) ?? catalog.tiers[1];
+  const variance = 0.92 + (hashRaceSeed(`${seed}:pace`) % 161) / 1000;
+  return { type: "bot", name: `${tier.label} ${source === "rom" ? "RuneWaker" : "Azeroth"} Team`,
+    tier: tier.id as RaceBotTier, source, roster: catalog.teams[source],
+    finishMs: Math.round(catalog.baselineMs * tier.multiplier * variance),
+    milestones: catalog.milestones.map((entry) => ({ ...entry,
+      atMs: Math.round(catalog.baselineMs * tier.multiplier * variance * entry.at) })) };
+}
+
+export function raceBotProgress(elapsedMs: number, bot: RaceBot): number {
+  if (elapsedMs <= 0) return 0;
+  const previous = [{ atMs: 0, progress: 0 }, ...bot.milestones]
+    .filter((entry) => entry.atMs <= elapsedMs).at(-1)!;
+  const next = bot.milestones.find((entry) => entry.atMs > elapsedMs);
+  if (!next) return 100;
+  return Math.floor(previous.progress + (next.progress - previous.progress)
+    * (elapsedMs - previous.atMs) / (next.atMs - previous.atMs));
+}