void OnBackGroundKeyEvent(ArcadeIO_Feng.Key k, bool downOrUp)
 {
     DebugLog("后台按键:" + k + (downOrUp ? " 按下" : " 松开"));
 }
    //IEnumerator _Coro_DebugLog()
    //{
    //    int i = 0;
    //    while (true)
    //    {
    //        DebugLog("TestLog" + (i++));
    //        yield return new WaitForSeconds(0.1F);
    //    }
    //}

    void KeyEvent(int playerIdx, ArcadeIO_Feng.Key k, bool downOrUp)
    {
        DebugLog("按键:" + k + (downOrUp ? " 按下" : " 松开") + "  由玩家: " + playerIdx + " 触发.");
    }