TimescaleController

TimescaleController.cs

using System.Collections.Generic;
using UnityEngine;


// Drop this in your scene for easy time slowdown. 
// Make time go faster when cliclking right arrow, slower when clicking the left arrow, and pause (and unpause) when clicking on Z.
// If *4 is not fast enough, you can add it to the list.
public class TimeScaleController : MonoBehaviour
{
        [SerializeField] private bool _enabled;
        [SerializeField] private List<float> _timescaleScales = new List<float> {0.1f, 0.25f, 0.5f, 0.75f, 1f, 1.5f, 2f, 3f, 4f};

        private float _defaultTimescale;
        private int _currentIndex = 0;
        private bool _paused;

        private void Awake()
        {
                _defaultTimescale = Time.timeScale;
                ResetTimescaleIndex();
        }

        private void ResetTimescaleIndex()
        {
                _currentIndex = _timescaleScales.IndexOf(_defaultTimescale);
                if (_currentIndex < 0)
                {
                        _currentIndex = 0;
                }
        }

        private void Update()
        {
                if (_enabled)
                {
                        if (Input.GetKeyDown(KeyCode.LeftArrow))
                        {
                                if (!_paused)
                                {
                                        _currentIndex = Mathf.Max(_currentIndex - 1, 0);
                                        Time.timeScale = _timescaleScales[_currentIndex];        
                                }
                        }
                        else if (Input.GetKeyDown(KeyCode.RightArrow))
                        {
                                if (!_paused)
                                {
                                        _currentIndex = Mathf.Min(_currentIndex + 1, _timescaleScales.Count - 1);
                                        Time.timeScale = _timescaleScales[_currentIndex];       
                                }
                        }
                        if (Input.GetKeyDown(KeyCode.Z))
                        {
                                if (_paused)
                                {
                                        _paused = false;
                                        Time.timeScale = _defaultTimescale;  
                                        ResetTimescaleIndex();
                                }
                                else
                                {
                                        _paused = true;
                                        Time.timeScale = 0;
                                }
                        }
                }

        }
}