better pause menu system

Assets/MenuController.cs

@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class MenuController : MonoBehaviour
+{
+    public List<MenuScreen> screens;
+
+    public void ShowScreen(string screenName)
+    {
+        HideAllScreens();
+        
+        MenuScreen selScreen = screens.Find(x => x.screenName == screenName);
+        if (selScreen != null)
+        {
+            selScreen.Show();
+        }
+        else
+        {
+            throw new System.Exception("Screen name was not found in list of screens!");
+        }
+    }
+
+    public void HideAllScreens()
+    {
+        foreach (var screen in screens)
+        {
+            screen.Hide();
+        }
+    }
+}