/// <summary>
    /// 攻撃制御クラスを生成する
    /// </summary>
    /// <param name="type">生成したい攻撃の種類</param>
    void CreateAttack(Type type)
    {
        switch (type)
        {
        case Type.Single:
            currentAttack = new AttackSingle(user);
            break;

        case Type.Double:
            currentAttack = new AttackDouble(user);
            break;
        }
        currentAttack.Excute(user.transform, null);
        currentAttack.onFinished = this.OnAttackFinished;
    }