/// <summary>
    /// FSM 有限状态机初始化
    /// </summary>
    private void MakeFSM()
    {
        fsmSystem = new FSMSystem();
        FSMState[] fsmStates = this.GetComponentsInChildren <FSMState>();
        foreach (FSMState state in fsmStates)
        {
            fsmSystem.AddState(state, this);
        }
        MenuState menuState = this.GetComponentInChildren <MenuState>();

        if (menuState != null)
        {
            fsmSystem.SetDefaultState(menuState);
        }
        else
        {
            Debug.Log("没有找到 MenuState 组件,请确认...");
        }
    }