private void OnStartDownloadTile(OnlineMapsTile tile)
    {
        tile.status = OnlineMapsTileStatus.loading;
        string filePath = Path.Combine(Application.persistentDataPath, tile.resourcesPath + ".png");
        if (File.Exists(filePath))
        {
            StartCoroutine(TryLoadFromResources(tile, filePath));
        }
        else
        {
            if (isMapOnline)
            {
                OnlineMapsTileManager.StartDownloadTile(tile);
            }
            else
            {
                tile.status = OnlineMapsTileStatus.error;
            }
        }
    }

    private IEnumerator TryLoadFromResources(OnlineMapsTile tile, string path)
    {
        var req = UnityWebRequestTexture.GetTexture(path);
        yield return req.SendWebRequest();
        if (tile.map == null)
        {
            tile.MarkError();
            yield break;
        }
        Texture2D texture = DownloadHandlerTexture.GetContent(req);
        if (texture != null)
        {
            texture.wrapMode = TextureWrapMode.Clamp;
            if (tile.map.control.resultIsTexture)
            {
                (tile as OnlineMapsRasterTile).ApplyTexture(texture);
                tile.map.buffer.ApplyTile(tile);
                OnlineMapsUtils.Destroy(texture);
            }
            else
            {
                tile.texture = texture;
                tile.status = OnlineMapsTileStatus.loaded;
            }
            tile.MarkLoaded();
            //tile.loadedFromResources = true;
            tile.map.Redraw();
        }
        else if (tile.map.source == OnlineMapsSource.Resources)
        {
            tile.MarkError();
        }
        req.Dispose();
    }