Unity 控制Animator动画倒放、停止播放

/****************************************************
    文件：Test01.cs
    作者：RAN
    邮箱: [email protected]
    日期：2020/06/09 16:29       
    功能：测试
*****************************************************/

using UnityEngine;

public class Test01 : MonoBehaviour
{
    public Animator anim;

    void Update()
    {
        if(Input.GetKeyDown(KeyCode.A))
        {
            AnimatorManager.Instance.PlayAnim(anim, 1f);//一倍速播放
        }
        else if(Input.GetKeyDown(KeyCode.B))
        {
            AnimatorManager.Instance.PlayAnim(anim, 2f);//二倍速播放
        }
        else if(Input.GetKeyDown(KeyCode.C))
        {
            AnimatorManager.Instance.PlayAnim(anim, -1f);//一倍速倒放
        }
        else if(Input.GetKeyDown(KeyCode.D))
        {
            AnimatorManager.Instance.PlayAnim(anim, -2f);//二倍速倒放
        }
        else if(Input.GetKeyDown(KeyCode.Space))
        {
            AnimatorManager.Instance.StopAnim(anim);//停止anim动画
        }
    }
}

/****************************************************
    文件：AnimatorManager.cs
    作者：RAN
    邮箱: [email protected]
    日期：2020/6/8 16:47:36
    功能：控制Animator动画倒放、暂停
*****************************************************/

using UnityEngine;

public class AnimatorManager : MonoBehaviour
{
    private static AnimatorManager _instance;

    public static AnimatorManager Instance
    {
        get
        {
            return _instance;
        }
    }

    void Awake()
    {
        _instance = this;
    }

    //播放动画anim(速度为speed)
    public void PlayAnim(Animator anim, float speed)
    {
        if(anim!=null)
        {
            anim.enabled = true;
            AnimatorClipInfo[] temps = anim.GetCurrentAnimatorClipInfo(0);
            AnimatorClipInfo clipInfo = new AnimatorClipInfo();
            if(temps.Length>0)
            {
                clipInfo = temps[0];//获取动画clip
            }
            anim.StartPlayback();
            anim.speed = speed;
            anim.Play(clipInfo.clip.name, 0, speed < 0 ? 1 : 0);
        }
    }

    //暂停动画anim
    public void StopAnim(Animator anim)
    {
        AnimatorClipInfo[] temps = anim.GetCurrentAnimatorClipInfo(0);
        AnimatorClipInfo clipInfo = new AnimatorClipInfo();
        if(temps.Length>0)
        {
            clipInfo = temps[0];
        }
        anim.Play(clipInfo.clip.name, 0, 0);
        anim.speed = 0;
    }
}