Class WeChatAdapter

packages/platform-wechat/src/WeChatAdapter.ts:63–289

 * 微信小游戏平台适配器
 */
export class WeChatAdapter implements IPlatformAdapter {
    readonly name = 'wechat-minigame';
    readonly version: string;

    // 子系统实例
    private _canvas: WeChatCanvasSubsystem | null = null;
    private _audio: WeChatAudioSubsystem | null = null;
    private _storage: WeChatStorageSubsystem | null = null;
    private _network: WeChatNetworkSubsystem | null = null;
    private _input: WeChatInputSubsystem | null = null;
    private _file: WeChatFileSubsystem | null = null;
    private _wasm: WeChatWASMSubsystem | null = null;

    private _deviceInfo: WechatMinigame.DeviceInfo | null = null;
    private _windowInfo: WechatMinigame.WindowInfo | null = null;
    private _appBaseInfo: WechatMinigame.AppBaseInfo | null = null;

    constructor() {
        if (!isWeChatMiniGame()) {
            throw new Error('当前环境不是微信小游戏环境');
        }

        // 使用新的分离 API 获取系统信息
        const wxApi = getWx();
        this._deviceInfo = wxApi.getDeviceInfo();
        this._windowInfo = wxApi.getWindowInfo();
        this._appBaseInfo = wxApi.getAppBaseInfo();
        this.version = this._appBaseInfo.SDKVersion;
    }

    // ========================================================================
    // IPlatformAdapter 基础实现
    // ========================================================================

    isWorkerSupported(): boolean {
        // 微信小游戏支持 Worker，但有限制
        return typeof getWx().createWorker === 'function';
    }

    isSharedArrayBufferSupported(): boolean {
        // 微信小游戏不支持 SharedArrayBuffer
        return false;
    }

    getHardwareConcurrency(): number {
        // 微信小游戏无法获取真实核心数，返回保守值
        return 2;
    }

    createWorker(script: string, options?: WorkerCreationOptions): PlatformWorker {
        // 微信小游戏 Worker 需要指定文件路径，不支持内联脚本
        // script 参数应该是 worker 文件的路径
        const worker = getWx().createWorker(script, {
            useExperimentalWorker: true
        });

        return new WeChatWorker(worker);
    }