アニメーション残り0.25秒だけ入力を受け付ける

InputTime.cs

using UnityEngine;

public class InputTime : MonoBehaviour
{
    public Animator animator;

    // Start is called before the first frame update
    void Start()
    {
        animator = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {
        AnimatorClipInfo[] animatorClipInfos = animator.GetCurrentAnimatorClipInfo(0);

        //ステートのアニメーションの長さ
        float totalAnimTime = animatorClipInfos[0].clip.length;
        //現在何秒再生したか
        float currentAnimTime = totalAnimTime * animator.GetCurrentAnimatorStateInfo(0).normalizedTime;

        //アニメーションが残り1秒以内なら
        if (totalAnimTime-currentAnimTime <= 0.25f)
        {
            Debug.Log(animatorClipInfos[0].clip.name + "入力受付");
        }
    }
}