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/convertor/json.ts

@@ -0,0 +1,92 @@
+'use strict';
+import { ImporterBase } from '../common/base';
+
+export class JSONImporter extends ImporterBase {
+    type: string = 'base';
+    async import(): Promise<boolean> {
+        const isSpine = this.validateSpine();
+        if (isSpine) {
+            this._3dMeta.ver = '1.2.3';
+            this._3dMeta.importer = 'spine-data';
+        }
+        else if (this.validateDragonBones()) {
+            this._3dMeta.ver = '1.0.0';
+            this._3dMeta.importer = 'dragonbones';
+        }
+        else if (this.validateDragonBonesAtlasAsset()) {
+            this._3dMeta.ver = '1.0.0';
+            this._3dMeta.importer = 'dragonbones-atlas';
+        }
+        else {
+            this._3dMeta.ver = '1.0.0';
+            this._3dMeta.importer = 'json';
+        }
+        return true;
+    }
+
+    validateDragonBonesAtlasAsset() {
+        let json;
+        const text = this.readFileSync(this.sourceFsPath);
+        try {
+            if (text) {
+                json = JSON.parse(text);
+            }
+        }
+        catch (e) {
+            return false;
+        }
+        return typeof json.imagePath === 'string' && Array.isArray(json.SubTexture);
+    }
+
+    validateDragonBones() {
+        var json;
+        if (this.sourceFsPath.endsWith('.json')) {
+            const text = this.readFileSync(this.sourceFsPath);
+            try {
+                if (text) {
+                    json = JSON.parse(text);
+                }
+            }
+            catch (e) {
+                return false;
+            }
+        } else {
+            const bin = this.readFileSync(this.sourceFsPath);
+            try {
+                // @ts-expect-error
+                json = dragonBones.BinaryDataParser.getInstance().parseDragonBonesData(bin.buffer);
+            } catch (e) {
+                return false;
+            }
+        }
+        return Array.isArray(json.armature) || !!json.armatures;
+    }
+
+    validateSpine() {
+        if (this.sourceFsPath.endsWith('.skel')) {
+            return true;
+        }
+        let json;
+        const text = this.readFileSync(this.sourceFsPath);
+        if (text) {
+            const fastTest = text.slice(0, 30);
+            const maybe = (fastTest.indexOf('slots') > 0 ||
+                fastTest.indexOf('skins') > 0 ||
+                fastTest.indexOf('events') > 0 ||
+                fastTest.indexOf('animations') > 0 ||
+                fastTest.indexOf('bones') > 0 ||
+                fastTest.indexOf('skeleton') > 0 ||
+                fastTest.indexOf('"ik"') > 0
+            );
+            if (maybe) {
+                try {
+                    json = JSON.parse(text);
+                } catch (e) {
+                    return false;
+                }
+                return Array.isArray(json.bones);
+            }
+        }
+        return false;
+    }
+}