shopping-cart-sim/Assets/Scripts/MainMenuController.cs

using UnityEngine;

public class MainMenuController : MonoBehaviour
{
    public GameObject startMenuUI;
    public GameObject gameUI;

    void Start()
    {
        Time.timeScale = 0f;
        startMenuUI.SetActive(true);
        if (gameUI != null)
            gameUI.SetActive(false);

        Cursor.lockState = CursorLockMode.None;
        Cursor.visible = true;

        Debug.Log("Main menu started <20> cursor should be visible.");
    }

    public void StartGame()
    {
        startMenuUI.SetActive(false);
        if (gameUI != null)
            gameUI.SetActive(true);

        Time.timeScale = 1f;
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        Debug.Log("Game started <20> cursor locked.");
    }

    public void QuitGame()
    {
        Debug.Log("Quitting game...");
        Application.Quit();
    }
}