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/MeshRenderer.ts

@@ -0,0 +1,71 @@
+'use strict';
+import { ImporterBase } from "../common/base";
+import { ModelLightmapSettings } from "./ModelLightmapSettings";
+
+export const MESHRENDERER = {
+    "__type__": "cc.MeshRenderer",
+    "_name": "",
+    "_objFlags": 0,
+    "node": null,
+    "_enabled": true,
+    "__prefab": null,
+    "_materials": [],
+    "_visFlags": 0,
+    "lightmapSettings": null,
+    "_mesh": null,
+    "_shadowCastingMode": 0,
+    "_shadowReceivingMode": 1,
+    "_enableMorph": true,
+};
+
+export class MeshRenderer {
+
+    static create() {
+        return JSON.parse(JSON.stringify(MESHRENDERER));
+    }
+
+    static async migrate(index: any, json2D: any) {
+        const json = json2D[index];
+        const source = JSON.parse(JSON.stringify(MESHRENDERER));
+        for (const key in json) {
+            const value = json[key];
+            if (key === '__type__' || value === undefined || value === null) { continue; }
+            if (key === '_materials') {
+                source._materials = [];
+                for (let i = 0; i < value.length; ++i) {
+                    let material = value[0];
+                    if (material) {
+                        material = {
+                            __uuid__: await ImporterBase.getUuid(material.__uuid__),
+                        };
+                        source._materials.push(material);
+                    }
+                }
+            }
+            else if (key === '_receiveShadows') {
+                // 1 = ON, 0 = OFF
+                source._shadowReceivingMode = value === 'true' ? 1 : 0;
+            }
+            else if (key === '_mesh') {
+                source._mesh = {
+                    __uuid__: await ImporterBase.getUuid(value.__uuid__),
+                };
+            }
+            else {
+                source[key] = value;
+            }
+        }
+        return source;
+    }
+
+    static async apply(index: number, json2D: any, json3D: any) {
+        const source = await MeshRenderer.migrate(index, json2D);
+        const modelLightmapSettings = ModelLightmapSettings.create();
+        json3D.push(modelLightmapSettings);
+        source.lightmapSettings = {
+            __id__: json3D.length - 1,
+        };
+        json3D.splice(index, 1, source);
+        return source;
+    }
+}