Global state singleton

Resources/BossPhases/Marisa/marisa_ns1.tres

@@ -15,6 +15,8 @@ Continuous = false
 [sub_resource type="Resource" id="Resource_q4pcc"]
 script = ExtResource("1_ys2v3")
 BulletScene = ExtResource("1_0bb8a")
+_bulletLifeTime = 20.0
+_destroyOnCollision = false
 bulletSpeed = 30.0
 bulletCount = 16
 rotationSpeed = 4.0

Scenes/test.tscn

@@ -122,7 +122,7 @@ ActivationType = 0
 Targets = Array[NodePath]([NodePath("../Rumia")])
 WaitForCompletion = true
 
-[sub_resource type="Resource" id="Resource_sf3bq"]
+[sub_resource type="Resource" id="Resource_o7jyd"]
 resource_local_to_scene = true
 script = ExtResource("49_0si7g")
 Target = NodePath(".")
@@ -586,7 +586,7 @@ Events = Array[Object]([SubResource("Resource_068l7"), SubResource("Resource_l3n
 
 [node name="BossBattleStartScript" parent="." instance=ExtResource("43_kf3qc")]
 position = Vector2(-1487, -396)
-Events = Array[Object]([SubResource("Resource_4f4id"), SubResource("Resource_s2o7m"), SubResource("Resource_b1dht"), SubResource("Resource_xrgpy"), SubResource("Resource_sf3bq")])
+Events = Array[Object]([SubResource("Resource_4f4id"), SubResource("Resource_s2o7m"), SubResource("Resource_b1dht"), SubResource("Resource_xrgpy"), SubResource("Resource_o7jyd")])
 
 [node name="Enemy8" parent="." instance=ExtResource("47_u1ve6")]
 position = Vector2(-968, 206)

Scripts/GameManager.cs

@@ -8,6 +8,7 @@ using Godot.Collections;
 
 public partial class GameManager : Node2D
 {
+    public static GameManager Instance { get; private set;}
     private Hud _hud;
 
     private PlayerMovement _player;
@@ -30,6 +31,8 @@ public partial class GameManager : Node2D
 
     private InventoryManager _inventoryManager { get; set; }
 
+    public MapStartData MapStartData { get; set; }
+
     //private AlarmManager _alarmManager { get; set; }
 
     //public InventoryManager Inventory => _inventoryManager;
@@ -45,6 +48,8 @@ public partial class GameManager : Node2D
     // Called when the node enters the scene tree for the first time.
     public override void _Ready()
     {
+        Instance = this;
+        
         _hud = GetNodeOrNull<Hud>("HUD");
         if (_hud == null) GD.Print("No HUD in scene.");
 
@@ -73,7 +78,7 @@ public partial class GameManager : Node2D
 
         //_ = DelayPlayerSpawn();
 
-        CallDeferred(nameof(DelayPlayerSpawn));
+        CallDeferred(MethodName.DelayPlayerSpawn);
     }
 
     // Called every frame. 'delta' is the elapsed time since the previous frame.

Scripts/GlobalState.cs

@@ -0,0 +1,57 @@
+using Godot;
+
+public partial class GlobalState : Node
+{
+    public static GlobalState Instance { get; private set; }
+
+    public Node CurrentScene { get; set; }
+
+    public override void _Ready()
+    {
+        Instance = this;
+
+        Viewport root = GetTree().Root;
+        // Using a negative index counts from the end, so this gets the last child node of `root`.
+        CurrentScene = root.GetChild(-1);
+
+
+    }
+
+    public void GotoScene(string path)
+    {
+        // This function will usually be called from a signal callback,
+        // or some other function from the current scene.
+        // Deleting the current scene at this point is
+        // a bad idea, because it may still be executing code.
+        // This will result in a crash or unexpected behavior.
+
+        // The solution is to defer the load to a later time, when
+        // we can be sure that no code from the current scene is running:
+
+        CallDeferred(MethodName.DeferredGotoScene, path);
+    }
+
+    public void DeferredGotoScene(string path)
+    {
+        // It is now safe to remove the current scene.
+        CurrentScene.Free();
+
+        // Load a new scene.
+        var nextScene = GD.Load<PackedScene>(path);
+
+        // Instance the new scene.
+        CurrentScene = nextScene.Instantiate();
+
+        // Add it to the active scene, as child of root.
+        GetTree().Root.AddChild(CurrentScene);
+
+        // Optionally, to make it compatible with the SceneTree.change_scene_to_file() API.
+        GetTree().CurrentScene = CurrentScene;
+    }
+}
+
+public class MapStartData 
+{
+    public int EggIndex = 0;
+    
+}

Scripts/PlayerMovement.cs

@@ -168,7 +168,9 @@ public partial class PlayerMovement : CharacterBody2D, IDestructible
 		_rightStickInput = Vector2.Zero;
 		_isStrafing = false;
 
-		_gameManager = this.GetGameManager();
+		_gameManager = GameManager.Instance;
+
+		//_gameManager = this.GetGameManager();
 		_inventoryManager = this.GetInventoryManager();
 
 		_gameManager.GameStateChange += GameManagerOnGameStateChange;

Scripts/UI/DebugMenu.cs

@@ -37,7 +37,8 @@ public partial class DebugMenu : Control
 	private void ButtonOnPressed(string scene)
 	{
 		GD.Print("Button was pressed, now what");
-		GetTree().ChangeSceneToFile(scene);
+		GlobalState.Instance.GotoScene(scene);
+		//GetTree().ChangeSceneToFile(scene);
 		
 	}
 

project.godot

@@ -30,6 +30,7 @@ config/icon="res://icon.svg"
 DebugStats="res://Scenes/debug_stats.tscn"
 DebugGUI="*res://addons/DebugGUI/DebugGUI.cs"
 Dialogic="*res://addons/dialogic/Core/DialogicGameHandler.gd"
+GlobalState="*res://Scripts/GlobalState.cs"
 
 [dialogic]