using UnityEngine;
using UnityEngine.Events;

using System.Collections;

public abstract class MoveRoot 
{
    #region 变量

    public bool IsPlaying
    {
        get { return AnimManager.MoveForList.Contains(this) || AnimManager.MoveBacList.Contains(this); }
    }

    public virtual bool InDestination
    {
        get { return InDestination_; }
        set { InDestination_ = value; }
    }

    public bool InDestination_;

    public bool InPause;

    public UnityAction OnForwardStart;
    public UnityAction OnForwardFinish;

    #endregion

    public abstract bool DoForward();
    public abstract bool DoBackward();


    public virtual void Pause()
    {
        if (!InPause)
        {
            InPause = true;

            AnimManager.MoveForList.Remove(this);
        }
    }

    public virtual void Resume()
    {
        if (InPause)
        {
            InPause = false;

            AnimManager.MoveForList.Add(this);
        }
    }


    public virtual void PushEvent(EventType type, UnityAction action)
    {
        if (type == EventType.ForwardStart)
        {
            OnForwardStart = action + OnForwardStart;
        }
        else if (type == EventType.ForwardFinish)
        {
            OnForwardFinish = action + OnForwardFinish;
        }
    }

    public virtual void AddEventOnetime(EventType type, UnityAction action)
    {
        if (type == EventType.ForwardStart)
        {
            action += () =>
            {
                OnForwardStart -= action;
            };

            OnForwardStart += action;
        }
        else if (type == EventType.ForwardFinish)
        {
            action += () =>
            {
                OnForwardFinish -= action;
            };

            OnForwardFinish += action;
        }
    }

    public virtual void PushEventOnetime(EventType type, UnityAction action)
    {
        if (type == EventType.ForwardStart)
        {
            action += () =>
            {
                OnForwardStart -= action;
            };

            OnForwardStart = action + OnForwardStart;
        }
        else if (type == EventType.ForwardFinish)
        {
            action += () =>
            {
                OnForwardFinish -= action;
            };

            OnForwardFinish = action + OnForwardFinish;
        }
    }
}