game save class

State/Global/GlobalState.cs

@@ -1,4 +1,5 @@
 using Godot;
+using SupaLidlGame.Utils;
 
 namespace SupaLidlGame.State.Global;
 
@@ -17,4 +18,18 @@ public partial class GlobalState : Node
     public delegate void SummonBossEventHandler(string bossName);
 
     public void Print(string str) => GD.Print(str);
+
+    public void ImportFromSave(Save save)
+    {
+        Progression = save.Progression;
+        MapState = save.MapState;
+        Stats = save.Stats;
+    }
+
+    public void ExportToSave(Save save)
+    {
+        save.Progression = Progression;
+        save.MapState = MapState;
+        save.Stats = Stats;
+    }
 }

State/Global/MapState.cs

@@ -1,6 +1,8 @@
 using Godot;
 using Godot.Collections;
 
+namespace SupaLidlGame.State.Global;
+
 public partial class MapState : Resource
 {
     [Export]

Utils/Save.cs

@@ -0,0 +1,22 @@
+using Godot;
+
+namespace SupaLidlGame.Utils;
+
+public partial class Save : Resource
+{
+    [Export]
+    public State.Global.Progression Progression { get; set; }
+
+    [Export]
+    public State.Global.MapState MapState { get; set; }
+
+    [Export]
+    public State.Global.Stats Stats { get; set; }
+
+    public Save()
+    {
+        Progression = new();
+        MapState = new();
+        Stats = new();
+    }
+}

Utils/World.cs

@@ -282,21 +282,26 @@ public partial class World : Node
     {
         SetSpawn(CurrentPlayer.GlobalPosition);
 
-        // TODO: create a single save resource file
-        ResourceSaver.Save(GlobalState.Progression, "user://progression.tres");
-        ResourceSaver.Save(GlobalState.MapState, "user://map-state.tres");
-        ResourceSaver.Save(GlobalState.Stats, "user://stats.tres");
+        var save = GetSave();
+        GlobalState.ExportToSave(save);
+        ResourceSaver.Save(save, "user://save.tres");
+    }
+
+    private Save GetSave()
+    {
+        if (ResourceLoader.Exists("user://save.tres"))
+        {
+            return ResourceLoader.Load<Save>("user://save.tres");
+        }
+        else
+        {
+            return new Save();
+        }
     }
 
     public void LoadGame()
     {
-        var prog = ResourceLoader.Load<Progression>("user://progression.tres");
-        var mapState = ResourceLoader.Load<MapState>("user://map-state.tres");
-        var stats = ResourceLoader.Load<Stats>("user://stats.tres");
-
-        GlobalState.Progression = prog ?? new Progression();
-        GlobalState.MapState = mapState ?? new MapState();
-        GlobalState.Stats = stats ?? new Stats();
+        GlobalState.ImportFromSave(GetSave());
 
         // load the player scene
         // TODO: implement