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>

extensions/plugin-import-2x/creator/components/PrefabInfo.ts

@@ -0,0 +1,59 @@
+'use strict';
+import { ImporterBase } from "../common/base";
+
+export const PREFABINFO = {
+    "__type__": "cc.PrefabInfo",
+    "root": null,
+    "asset": null,
+    "fileId": "",
+    "sync": false,
+    "_synced": {
+        "default": false,
+        "serializable": false,
+    },
+};
+
+export class PrefabInfo {
+
+    static create() {
+        return JSON.parse(JSON.stringify(PREFABINFO));
+    }
+
+    static async migrate(json2D: any, json3D: any) {
+        const source = JSON.parse(JSON.stringify(PREFABINFO));
+        let isPrefab = false;
+        if (json3D && json3D[0]) {
+            isPrefab = json3D[0].__type__ === 'cc.Prefab';
+        }
+        for (const key in json2D) {
+            const value = json2D[key];
+            if (key === '__type__' || value === undefined || value === null) { continue; }
+            if (key === 'asset') {
+                if (value.__uuid__) {
+                    let __uuid__;
+                    if (isPrefab) {
+                        __uuid__ = ImporterBase.getNewUuid(value.__uuid__);
+                    } else {
+                        __uuid__ = await ImporterBase.getUuid(value.__uuid__);
+                    }
+                    source.asset = {
+                        __uuid__: __uuid__,
+                    };
+                }
+                else if (value.__id__) {
+                    source.asset = value;
+                }
+            }
+            else {
+                source[key] = value;
+            }
+        }
+        return source;
+    }
+
+    static async apply(index: number, json2D: any, json3D: any) {
+        const source = await PrefabInfo.migrate(json2D[index], json3D);
+        json3D.splice(index, 1, source);
+        return source;
+    }
+}