using UnityEngine;
using UnityEngine.Events;

using System;
using System.Collections;

public class Move : Anim
{
    #region 变量

    protected override bool InDestination
    {
        get
        {
            if (Target.position == Destination)
            {
                _InDestination = true;
            }
            else
            {
                _InDestination = false;
            }

            return _InDestination;
        }
        set
        {
            _InDestination = value;

            if (_InDestination)
            {
                Target.position = Destination;
            }
        }
    }

    protected float Timer;
    protected float Duration;
    protected Vector3 Delta;
    protected Vector3 Origin;
    protected Vector3 Destination;
    protected Transform Target;

    protected CurveFunctionV Func;

    #endregion

    public Move(Transform target)
    {
        Target = target;
    }


    public override bool Do()
    {
        Timer += Time.fixedDeltaTime;

        if (Timer > Duration)
        {
            Timer = 0;

            Target.position = Destination;

            ManaAnim.AnimList.Remove(this);

            if (OnFinish != null)
            {
                OnFinish.Invoke();
            }

            return true;
        }
        else
        {
            Target.position = Func(Timer, Duration, Origin, Delta);

            return false;
        }
    }

    public void StartMove(Vector3 destination, float duration, Curve curve)
    {
        InDestination = false;
        destination.z = Target.position.z;

        Delta = destination - Target.position;
        Origin = Target.position;
        Duration = duration;
        Destination = destination;

        Func = ManaAnim.CurveFunctionDicV[curve];

        if (OnStart != null)
        {
            OnStart.Invoke();
        }

        ManaAnim.AnimList.Remove(this);
        ManaAnim.AnimList.Add(this);
    }
}