using System;
using UnityEngine;

using System.Collections;
using System.Collections.Generic;

using Debug = System.Diagnostics.Debug;

public class Shake : MoveRoot
{
    #region 变量

    public override bool InDestination
    {
        get
        {
            if (Target.position.Equal(Origin))
            {
                InDestination_ = true;
            }
            else
            {
                InDestination_ = false;
            }

            return InDestination_;
        }
        set
        {
            InDestination_ = value;

            InPause = false;

            if (InDestination_)
            {
                Target.position = Origin;
            }
        }
    }

    public int Repeat;
    public float Z;
    public float Timer;
    public float Duration;
    public Vector3 Origin;
    public Vector3 Strength;
    public Transform Target;

    public ShakeFunctionV Func;

    #endregion

    public Shake(Transform transform)
    {
        Target = transform;
    }

    public override bool DoForward()
    {
        Timer += Time.deltaTime;

        if (Timer > Duration)
        {
            Timer = 0;

            InDestination = true;

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

            return true;
        }
        else
        {
            Target.position = Func(Timer, Duration, Repeat, Origin, Strength);
            Target.SetZ(Z);

            return false;
        }
    }

    public override bool DoBackward()
    {
        throw new Exception();
    }

    public void StartShake(int repeat, float duration, Vector3 strength, Curve curve)
    {
        Timer = 0;

        InDestination = false;

        Repeat = repeat;

        Z = Target.position.z;

        Origin = Target.position;
        Strength = strength;
        Duration = duration;

        Func = AnimManager.ShakeFuncDicV[curve];

        OnForwardStart.SafeInvoke();

        AnimManager.MoveForList.Remove(this);
        AnimManager.MoveForList.Add(this);
    }
}