Pull up singleton behaviour.

Assets/Cryville/Crtr/UI/Master.cs

@@ -1,24 +1,13 @@
-using System;
+using Cryville.Common.Unity;
 using UnityEngine;
 
 namespace Cryville.Crtr.UI {
-	internal class Master : MonoBehaviour {
-		static Master s_instance;
-		public static Master Instance { get { return s_instance; } }
-
+	internal class Master : SingletonBehaviour<Master> {
 #pragma warning disable IDE0044
 		[SerializeField]
 		private GameObject m_menu;
 #pragma warning restore IDE0044
 
-		void Awake() {
-			if (s_instance != null) {
-				Destroy(gameObject);
-				throw new InvalidOperationException("Attempted to initialize a singleton twice.");
-			}
-			s_instance = this;
-		}
-
 		internal void ShowMenu() { m_menu.SetActive(true); }
 		internal void HideMenu() { m_menu.SetActive(false); }
 

Assets/Cryville/Crtr/UI/Menu.cs

@@ -1,3 +1,4 @@
+using Cryville.Common.Unity;
 using Cryville.Common.Unity.UI;
 using Cryville.Crtr.Browsing.UI;
 using System.Collections.Generic;
@@ -6,7 +7,7 @@ using UnityEngine;
 using unity = UnityEngine;
 
 namespace Cryville.Crtr.UI {
-	public class Menu : MonoBehaviour {
+	internal class Menu : SingletonBehaviour<Menu> {
 #pragma warning disable IDE0044
 		[SerializeField]
 		ResourceBrowserMaster m_browserMaster;
@@ -24,7 +25,7 @@ namespace Cryville.Crtr.UI {
 		bool initialized = false;
 		int totalTasks = 0;
 #pragma warning disable IDE0051
-		void Awake() {
+		protected override void Awake() {
 			Game.Init();
 			m_contents.SetActive(true);
 			PushTitle("Chart Browser");

Assets/Cryville/Crtr/UI/PopupManager.cs

@@ -1,23 +1,11 @@
-using System;
+using Cryville.Common.Unity;
 using UnityEngine;
-using UnityEngine.UI;
 
 namespace Cryville.Crtr.UI {
-	public class PopupManager : MonoBehaviour {
-		static PopupManager s_instance;
-		public static PopupManager Instance { get { return s_instance; } }
-
+	public class PopupManager : SingletonBehaviour<PopupManager> {
 		[SerializeField]
 		GameObject m_popupPrefab;
 
-		void Awake() {
-			if (s_instance != null) {
-				Destroy(gameObject);
-				throw new InvalidOperationException("Attempted to initialize a singleton twice.");
-			}
-			s_instance = this;
-		}
-
 		public void Create(string msg) {
 			Instantiate(m_popupPrefab, transform, false).GetComponent<Popup>().Message = msg;
 		}