save and load with P and L

Assets/Scripts/Data/Game.cs

@@ -257,15 +257,15 @@ protected virtual void OnHintChanged(Hint newHint, Hint oldHint)
             HintChanged?.Invoke(this, new ItemChangedEventArgs<Hint>(newHint, oldHint));
         }
 
-        void saveStateToFile(string filename)
+        public void saveStateToFile(string filename)
         {
             string serializedGame = GameSerializer.serialize(this);
             System.IO.File.WriteAllText(
                 Path.Combine(Application.persistentDataPath, filename),
                     serializedGame, Encoding.UTF8);
         }
 
-        void restoreStateFromFile(string filename)
+        public void restoreStateFromFile(string filename)
         {
             string serializedGame =
                 System.IO.File.ReadAllText(Path.Combine(Application.persistentDataPath, filename), Encoding.UTF8);

Assets/Scripts/DevTools/SaveAndLoadKeyListener.cs

@@ -0,0 +1,24 @@
+using System;
+using Assets.Scripts.Data;
+using UnityEngine;
+
+namespace Assets.Scripts.DevTools
+{
+    public class SaveAndLoadKeyListener : MonoBehaviour
+    {
+        public void Update()
+        {
+            if (Input.GetKeyDown(KeyCode.P))
+            {
+                // Save to file
+                Game.Instance.saveStateToFile("test_save.sav");
+            }
+
+            if (Input.GetKeyDown(KeyCode.L))
+            {
+                // Load from file
+                Game.Instance.restoreStateFromFile("test_save.sav");
+            }
+        }
+    }
+}