Release Healer Man 0.1.16

server/arena-stages.mjs

@@ -0,0 +1,35 @@
+import { readFileSync } from "node:fs";
+import { fileURLToPath } from "node:url";
+
+const source = JSON.parse(readFileSync(fileURLToPath(new URL("../shared/arena-stages.json", import.meta.url)), "utf8"));
+
+function normalizeStage(stage) {
+  return Object.freeze({
+    ...stage,
+    assets: Object.freeze([
+      { id: "visual", url: `${stage.assetBaseUrl}/visual.glb` },
+      { id: "collision", url: `${stage.assetBaseUrl}/collision.glb` },
+      { id: "navigation", url: `${stage.assetBaseUrl}/navigation.glb` },
+    ]),
+  });
+}
+
+export const ARENA_STAGES = Object.freeze(source.stages.map(normalizeStage));
+export const VALIDATED_ARENA_STAGES = Object.freeze(ARENA_STAGES.filter((stage) => (
+  stage.validation.traversal
+  && stage.validation.collision
+  && stage.validation.spawnSafety
+  && stage.validation.lineOfSight
+  && stage.validation.performance
+)));
+
+export function arenaStageById(stageId) {
+  return ARENA_STAGES.find((stage) => stage.id === stageId) ?? null;
+}
+
+export function chooseArenaStage({ random = Math.random, previousStageId = null, allowUnvalidated = false } = {}) {
+  const pool = allowUnvalidated ? ARENA_STAGES : VALIDATED_ARENA_STAGES;
+  if (!pool.length) throw new Error("No validated arena stages are available.");
+  const alternatives = pool.length > 1 ? pool.filter((stage) => stage.id !== previousStageId) : pool;
+  return alternatives[Math.floor(random() * alternatives.length)];
+}