TemplateUnity/Assets/Scripts/MainMenu/MainMenuManager.cs

using System;
using TemplateUnity.Core;
using UnityEngine;

namespace TemplateUnity.MainMenu
{
    public class MainMenuManager: MonoBehaviour
    {
        public static MainMenuManager Instance { get; private set; }

        public event EventHandler onMainSectionReveal;         
        public event EventHandler onSaveSectionReveal;         
        public event EventHandler onOptionsSectionReveal;         
        
        private void Awake()
        {
            if (Instance)
            {
                Debug.LogWarning($"{typeof(MainMenuManager)} already instantiated! {transform}");
                Destroy(gameObject);
                return;
            }
            
            Instance = this;
        }

        private void Start()
        {
            UIMainSection.Instance.onNewGameTrigger += UIMainSection_OnNewGame;
            UIMainSection.Instance.onContinueTrigger += (_, _) => onSaveSectionReveal?.Invoke(this, EventArgs.Empty);
            UIMainSection.Instance.onOptionsTrigger += (_, _) => onOptionsSectionReveal?.Invoke(this, EventArgs.Empty);
            UIMainSection.Instance.onQuitTrigger += UIMainSection_OnQuit;
            
            UIOptionSection.Instance.onExitTrigger += (_, _) => onMainSectionReveal?.Invoke(this, EventArgs.Empty);
            
            onMainSectionReveal?.Invoke(this, EventArgs.Empty);
        }
        
        private void UIMainSection_OnNewGame(object sender, EventArgs e)
        {
            SceneLoader.LoadScene(SceneLoader.SceneName.TestScene);
        }
        
        private void UIMainSection_OnQuit(object sender, EventArgs e)
        {
            Application.Quit();
        }
    }
}