Complete Cocos Creator port with level bundles, themes, and tooling.

Adds level prefabs, theme assets, audio, extensions, and deployment scripts for the Unity WebGL migration.

Co-authored-by: Cursor <cursoragent@cursor.com>

assets/scripts/level/LevelPrefabUuidIndex.ts

@@ -0,0 +1,58 @@
+import { assetManager, JsonAsset } from 'cc';
+import { PREVIEW } from 'cc/env';
+
+/** assets/level-data/level-prefab-uuids.json（烘焙脚本生成，编辑器预览按 uuid 加载 prefab） */
+const EDITOR_UUID_INDEX = 'f7e8d9c0-b1a2-4c3d-9e8f-1a2b3c4d5e6f';
+
+let uuidByLevelId: Record<number, string> | null = null;
+let loadPromise: Promise<void> | null = null;
+
+function ingest(data: Record<string, string>) {
+    const out: Record<number, string> = {};
+    for (const [k, v] of Object.entries(data ?? {})) {
+        const id = parseInt(k, 10);
+        const uuid = typeof v === 'string' ? v.trim() : '';
+        if (!Number.isNaN(id) && uuid) out[id] = uuid;
+    }
+    uuidByLevelId = out;
+}
+
+function loadFromEditorAsset(): Promise<void> {
+    return new Promise((resolve, reject) => {
+        assetManager.loadAny({ uuid: EDITOR_UUID_INDEX }, (err: Error | null, asset: JsonAsset) => {
+            if (err || !asset?.json) {
+                reject(err ?? new Error('level-prefab-uuids.json 未找到'));
+                return;
+            }
+            ingest(asset.json as Record<string, string>);
+            resolve();
+        });
+    });
+}
+
+/** 编辑器预览：levelId → prefab uuid */
+export function loadLevelPrefabUuidIndex(): Promise<void> {
+    if (uuidByLevelId) return Promise.resolve();
+    if (loadPromise) return loadPromise;
+    loadPromise = loadFromEditorAsset().catch((e) => {
+        console.warn('[LevelPrefabUuidIndex] 加载失败，将仅用 bundle 路径', e);
+        uuidByLevelId = {};
+    }).then(() => undefined);
+    return loadPromise;
+}
+
+export function getLevelPrefabUuid(levelId: number): string | undefined {
+    return uuidByLevelId?.[levelId];
+}
+
+/** level-prefabs/Level91601 → 91601 */
+export function parseLevelIdFromPrefabPath(path: string): number | undefined {
+    const m = /Level(\d+)\s*$/.exec(path.trim());
+    if (!m) return undefined;
+    const id = parseInt(m[1], 10);
+    return Number.isNaN(id) ? undefined : id;
+}
+
+export function shouldTryEditorUuidLoad(): boolean {
+    return PREVIEW;
+}