State persistance between scenes

Scripts/Activables/LevelTeleporter.cs

@@ -6,10 +6,11 @@ using Godot;
 
 namespace Cirno.Scripts.Activables;
 
-public partial class LevelTeleporter : Teleporter 
+public partial class LevelTeleporter : Teleporter
 {
-    [Export]
-    public string LevelPath {get; private set;}
+    [Export] public string LevelPath { get; private set; }
+
+    [Export] public bool SaveInventory { get; private set; }
 
     protected override async Task Teleport(IStateMachine<PlayerState, CharacterBody2D> player)
     {
@@ -20,13 +21,19 @@ public partial class LevelTeleporter : Teleporter
         await TweenPlayer(player.MainObject);
 
         _particles.Emitting = true;
-        
+
         //await player.Teleport();
         player.SetState(PlayerState.UnTeleporting);
         await Task.Delay((int)(0.6f * 1000));
 
         await Task.Delay((int)(TeleportAnimationLength * 1000));
 
+        if (SaveInventory)
+        {
+            // Save inventory
+            GlobalState.Instance.SessionSettings.Items = InventoryManager.Instance.Save();
+        }
+
         GlobalState.Instance.GotoScene(LevelPath);
     }
 }

Scripts/Actors/Boss.cs

@@ -48,7 +48,12 @@ public partial class Boss : Enemy, IActivable, IScriptHost
         }
 
         _homePosition = this.GlobalPosition;
-        
+
+        CallDeferred(MethodName.InitDeferred);
+    }
+
+    private void InitDeferred()
+    {
         _cameraMarker = new Marker2D();
         GameManager.Instance.CallDeferred("add_child", _cameraMarker);
         _cameraMarker.GlobalPosition = _homePosition + CameraOffset;
@@ -87,6 +92,7 @@ public partial class Boss : Enemy, IActivable, IScriptHost
             
         }
     }
+    
 
     public override void _Process(double delta)
     {

Scripts/GameManager.cs

@@ -113,7 +113,7 @@ public partial class GameManager : Node2D
 
     public void ApplySessionState(SessionSettings settings)
     {
-
+        //_inventoryManager.Load(settings.Items);
     }
 
     public override void _Process(double delta)

Scripts/GlobalState.cs

@@ -8,8 +8,9 @@ using GTweensGodot.Extensions;
 public partial class GlobalState : Node
 {
     public static GlobalState Instance { get; private set; }
-
+    public static SessionSettings Session => GlobalState.Instance.SessionSettings;
     public Node CurrentScene { get; set; }
+    public string CurrentSceneId { get; private set; }
     
     private ColorRect _fader { get; set; }
 
@@ -71,12 +72,18 @@ public partial class GlobalState : Node
     
     private void DeferredGotoScene(string path, MapStartDataResource startData = null)
     {
+        // if (InventoryManager.Instance is not null)
+        // {
+        //     SessionSettings.Items = InventoryManager.Instance.Save();
+        // }
+        
         // It is now safe to remove the current scene.
         CurrentScene.Free();
         
         // Load a new scene.
         var nextScene = GD.Load<PackedScene>(path);
-
+        CurrentSceneId = nextScene.GetSceneUniqueId();
+        
         // Instance the new scene.
         CurrentScene = nextScene.Instantiate();
 
@@ -153,4 +160,25 @@ public partial class GlobalState : Node
         _loadingPlaque?.Hide();
         _fader.TweenModulateAlpha(0, 1f).PlayUnpausable();
     }
+
+    public void SaveGame()
+    {
+        var items = InventoryManager.Instance.Save();
+        var serializedSavedata = new Godot.Collections.Dictionary<string, Variant>()
+        {
+            { "Items", items },
+            { "Level", CurrentSceneId }
+        };
+
+        var saveFile = FileAccess.Open("user://savegame.save", FileAccess.ModeFlags.Write);
+
+        var jsonString = Json.Stringify(serializedSavedata);
+
+        saveFile.StoreLine(jsonString);
+    }
+
+    public void LoadGame()
+    {
+        
+    }
 }

Scripts/InventoryManager.cs

@@ -8,6 +8,9 @@ using Cirno.Scripts.Resources;
 public partial class InventoryManager : Node2D
 {
 	public static InventoryManager Instance { get; private set; }
+	
+	public ItemsDatabase ItemsDatabase { get; set; }
+	
 	public bool RedKeycard { get; set; }
 
 	private Dictionary<string, ItemContainer> _itemsDict = new();
@@ -35,6 +38,8 @@ public partial class InventoryManager : Node2D
 	public override void _Ready()
 	{
 		Instance = this;
+		GD.Print("Loading items");
+		Load(GlobalState.Session.Items);
 	}
 
 	// Called every frame. 'delta' is the elapsed time since the previous frame.
@@ -154,6 +159,32 @@ public partial class InventoryManager : Node2D
 	{
 		EmitSignal(SignalName.LoadedAmmoChanged, weaponDataItemKey, loadedAmmo);
 	}
+
+	public Godot.Collections.Dictionary<string, int> Save()
+	{
+		Godot.Collections.Dictionary<string, int> dict = new();
+		foreach (var item in _itemsDict)
+		{
+			dict.Add(item.Key, item.Value.Count);
+		}
+
+		return dict;
+	}
+
+	public void Load(Godot.Collections.Dictionary<string, int> items)
+	{
+		ItemsDatabase = ResourceLoader.Load<ItemsDatabase>("uid://cdi84udi6gldt");
+		
+		_itemsDict.Clear();
+
+		_itemsDict = items.ToDictionary(x => x.Key, x => new ItemContainer()
+		{
+			Item = ItemsDatabase.LootItems.FirstOrDefault(y => y.ItemKey == x.Key), 
+			Count = x.Value
+		});
+		
+		GD.Print($"Items after loading: {_itemsDict.Count}");
+	}
 }
 
 public class ItemContainer

Scripts/MainMenu.cs

@@ -1,6 +1,7 @@
 using Godot;
 using System;
 using Cirno.Scripts.UI;
+using Godot.Collections;
 
 public partial class MainMenu : CanvasLayer
 {
@@ -51,6 +52,7 @@ public partial class MainMenu : CanvasLayer
 	{
 		if (GameScene != null)
 		{
+			GlobalState.Session.NewSession();
 			GlobalState.Instance.GotoScene(GameScene);
 			//GetTree().ChangeSceneToFile(GameScene);
 		}

Scripts/Resources/ItemsDatabase.cs

@@ -0,0 +1,11 @@
+using Godot;
+using Godot.Collections;
+
+namespace Cirno.Scripts.Resources;
+
+[GlobalClass]
+public partial class ItemsDatabase : Resource
+{
+    [Export]
+    public Array<LootItem> LootItems { get; set; } = new();
+}

Scripts/Resources/ItemsDatabase.cs.uid

@@ -0,0 +1 @@
+uid://c23prvgfitlpd

Scripts/Utils/SessionSettings.cs

@@ -8,8 +8,13 @@ public class SessionSettings
     public bool SkipDialogues { get; set; } = false;
     public bool GodMode { get; set; } = false;
 
-    public Dictionary<string,int> Items {get;set;} = new();
+    public Godot.Collections.Dictionary<string, int> Items { get; set; } = new();
 
-    public float Health {get;set;}
-    public float Shield {get;set;}
-}
+    public float Health { get; set; }
+    public float Shield { get; set; }
+
+    public void NewSession()
+    {
+        Items = new();
+    }
+}