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

/// <summary>
/// 自定义动画
/// </summary>
public abstract class CustomAnimation : MonoBehaviour
{
    public bool playOnStart;
    public float playDelay;
    public float duration;
    public bool loop;
    public AnimationCurve animationCurve;
    public bool animating
    {
        get
        {
            return _enableAnim;
        }
    }
    public float timer;
    protected bool _enableAnim = false;


    protected virtual void Update()
    {
        if (_enableAnim)
        {
            if (timer < duration)
            {
                UpdateAnimation(timer / duration);
                timer += Time.deltaTime;
            }
            else
            {
                timer = 0;
                if (!loop)
                {
                    _enableAnim = false;
                }
            }
        }
    }

    public virtual void StartAnimation()
    {
        ResetAnim();
        if (playDelay > 0)
        {
            Invoke("EnableAnim", playDelay);
        }
        else
        {
            EnableAnim();
        }
    }

    public virtual void StopAnimation()
    {
        ResetAnim();
    }

    protected virtual void ResetAnim()
    {
        timer = 0;
        _enableAnim = false;
        UpdateAnimation(0);
        CancelInvoke("EnableAnim");
    }

    protected void EnableAnim()
    {
        _enableAnim = true;
    }

    protected virtual void OnEnable()
    {
        if (playOnStart)
        {
            StartAnimation();
        }
    }

    protected virtual void OnDisable()
    {
        ResetAnim();
    }

    protected abstract void UpdateAnimation(float v);
}