/// <summary>
    /// ランキングデータ取得
    /// </summary>
    /// <param name="_gameNo">Game no.</param>
    /// <param name="_diff">Diff.</param>
    /// <param name="_type">Type.</param>
    /// <param name="_success">Success.</param>
    /// <param name="_failure">Failure.</param>
    public void GetRankingData(int _gameNo, int _diff, GetRankingType _type, Action <Ranking.Data[]> _success, Action _failure)
    {
        if (!SteamManager.Initialized)
        {           // SteamAPIの初期化が行われていない
            if (_failure != null)
            {
                _failure();
            }
            return;
        }

        StartCoroutine(_DownloadEntry(_gameNo, _diff, _type, _success, _failure));
    }
    IEnumerator _DownloadEntry(int _gameNo, int _diff, GetRankingType _type, Action <Ranking.Data[]> _success, Action _failure)
    {
        bool retFind = false;

        string leaderboard_name = LEADERBOARD_NANE[_gameNo];

        // リーダーボード取得
        SteamManager.Instance.Leaderboard.FindLeaderboard(leaderboard_name, (_find) =>
        {
            switch (_type)
            {                   // ユーザー自身順位
            case GetRankingType.USER_CURRENT:
                {
                    CSteamID[] ids = { SteamUser.GetSteamID() };
                    SteamManager.Instance.Leaderboard.DownloadScoreUsers(ids, (_data) => { retFind = true; });
                }
                break;

            // グローバル順位
            case GetRankingType.GLOBAL:
                SteamManager.Instance.Leaderboard.DownloadScoreGlobal(GLOBAL_RANKING_START_NUM, GLOBAL_RANKING_GET_NUM, (_data) => { retFind = true; });
                break;
            }
        });

        while (!retFind)
        {               // 取得待ち
            yield return(new WaitForEndOfFrame());
        }
        ;

        Ranking.Data[] arrayRankingData = new Ranking.Data[SteamManager.Instance.Leaderboard.CurrentDownloadEntryCnt];
        for (int i = 0; i < arrayRankingData.Length; ++i)
        {
            LeaderboardEntry_t leaderboardEntry;
            bool ret = SteamUserStats.GetDownloadedLeaderboardEntry(SteamManager.Instance.Leaderboard.SteamLeaderboardEntries, i, out leaderboardEntry, null, 0);

            if (ret)
            {
                arrayRankingData[i] = new Ranking.Data(leaderboardEntry.m_nGlobalRank, SteamFriends.GetFriendPersonaName(leaderboardEntry.m_steamIDUser), leaderboardEntry.m_nScore);
            }
        }

        if (_success != null)
        {
            _success(arrayRankingData);
        }
    }