save tool between scenes and in save file

Assets/Scripts/Management/GameManager.cs

@@ -11,6 +11,7 @@ public class GameManager : MonoBehaviour
     public static GameManager Instance { get; private set; }
     public DialogueManager DialogueManager { get; private set; }
     public TimeManager TimeManager { get; private set; }
+    public PlayerManager PlayerManager { get; private set; }
     public Inventory Inventory { get; private set; }
     public Storybools Storybools { get; private set; }
 
@@ -26,6 +27,7 @@ private void Awake()
         if (Instance != null && Instance != this)
         {
             Destroy(this.gameObject);
+            return;
         }
         else
         {
@@ -52,6 +54,7 @@ private void ReloadReferences()
 
         Instance.Inventory = GetComponent<Inventory>();
         Instance.TimeManager = GetComponent<TimeManager>();
+        Instance.PlayerManager = GetComponent<PlayerManager>();
     }
 
     /// <summary>

Assets/Scripts/Management/PlayerManager.cs

@@ -0,0 +1,25 @@
+using UnityEngine;
+
+// Handles scene-persistent player data
+public class PlayerManager : MonoBehaviour
+{
+    public int CurrentToolIndex;
+
+    #region Player Data Save/Load
+    public void SavePlayerData(ref PlayerSaveData data)
+    {
+        data.activeToolIndex = GameManager.Instance.PlayerManager.CurrentToolIndex;
+    }
+
+    public void LoadPlayerData(PlayerSaveData data)
+    {
+        GameManager.Instance.PlayerManager.CurrentToolIndex = data.activeToolIndex;
+    }
+    #endregion
+}
+
+[System.Serializable]
+public struct PlayerSaveData
+{
+    public int activeToolIndex;
+}

Assets/Scripts/Management/PlayerManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: f9c9dde58f68b5e4d9fc0036b990c481

Assets/Scripts/Management/SaveSystem.cs

@@ -13,6 +13,7 @@ public struct SaveData
         public StoryboolSaveData StoryboolData;
         public InventorySaveData InventorySaveData;
         public TimeSaveData TimeSaveData;
+        public PlayerSaveData PlayerSaveData;
     }
 
     public static string SaveFileName()
@@ -45,6 +46,7 @@ private static void HandleSaveData()
         GameManager.Instance.SaveStoryBools(ref _saveData.StoryboolData);
         GameManager.Instance.Inventory.SaveInventory(ref _saveData.InventorySaveData);
         GameManager.Instance.TimeManager.SaveTime(ref _saveData.TimeSaveData);
+        GameManager.Instance.PlayerManager.SavePlayerData(ref _saveData.PlayerSaveData);
         QuestRegistry.Instance.SaveQuestData(ref _saveData.QuestData);
     }
 
@@ -84,6 +86,7 @@ public static void HandleLoadData()
         GameManager.Instance.LoadStoryBools(_saveData.StoryboolData);
         GameManager.Instance.Inventory.LoadInventory(_saveData.InventorySaveData);
         GameManager.Instance.TimeManager.LoadTime(_saveData.TimeSaveData);
+        GameManager.Instance.PlayerManager.LoadPlayerData(_saveData.PlayerSaveData);
         QuestRegistry.Instance.LoadQuestData(_saveData.QuestData);
     }
 }