simple hit stop for Unity

HitStopHandler.cs

using System;
using UnityEngine;
using System.Collections;

public class HitStopHandler : MonoBehaviour {

    public void HitStop(float stopTime, Action onResume)
    {
        StartCoroutine(HitStopCoroutine(stopTime, onResume));
    }

    private IEnumerator HitStopCoroutine(float stopTime, Action onResume)
    {
        float timeScale = Time.timeScale;
        Time.timeScale = 0f;

        yield return new WaitForSecondsRealtime(stopTime);

        Time.timeScale = timeScale;
        if (onResume != null) onResume();
    }
}