KitchenChaos/Assets/Scripts/UI/GamePauseUI.cs

using System;
using UnityEngine;
using UnityEngine.UI;

namespace UI {
    public class GamePauseUI : MonoBehaviour {
        [SerializeField] private Button resumeButton;

        //TODO: Restart Button
        [SerializeField] private Button optionsButton;
        [SerializeField] private Button mainMenuButton;

        private void Awake() {
            resumeButton.onClick.AddListener(() => KitchenGameManager.Instance.TogglePauseGame());
            optionsButton.onClick.AddListener(() => {
                Hide();
                OptionsUI.Instance.Show(Show);
            });
            mainMenuButton.onClick.AddListener(() => Loader.Load(Loader.Scene.MainMenuScene));
        }

        private void Start() {
            KitchenGameManager.Instance.OnGamePaused += KitchenGameManager_OnGamePaused;
            KitchenGameManager.Instance.OnGameUnpaused += KitchenGameManager_OnGameUnpaused;
            Hide();
        }

        private void KitchenGameManager_OnGameUnpaused(object sender, EventArgs e) {
            Hide();
        }

        private void KitchenGameManager_OnGamePaused(object sender, EventArgs e) {
            Show();
        }

        private void Show() {
            gameObject.SetActive(true);
            resumeButton.Select();
        }

        private void Hide() {
            gameObject.SetActive(false);
        }
    }
}