projetrunandgun/Assets/PauseMenu.cs

using UnityEngine;
using UnityEngine.SceneManagement;

public class PauseMenu : MonoBehaviour
{

    public GameObject pauseMenuUI;

    public DontDestroy notDestroyedObjects;

    public static bool gameIsPaused = false;
    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape))
        {
            if (gameIsPaused)
            {
                Resume();
            }
            else
            {
                Paused();
            }
        }
    }

    void Paused()
    {
        pauseMenuUI.SetActive(true);

        Time.timeScale = 0;
        
        gameIsPaused = true;
    }

    public void Resume()
    {
        pauseMenuUI.SetActive(false);

        Time.timeScale = 1;

        gameIsPaused = false;
    }

    public void LoadMainMenu()
    {
        SceneManager.LoadScene("MainMenu");
    }

    public void Settings()
    {
        
    }
}