Add Godot project shell

godot/scripts/debug/DebugOverlay.cs

@@ -0,0 +1,43 @@
+#nullable enable
+
+using Godot;
+
+namespace SideScrollerGame.Debug;
+
+public partial class DebugOverlay : CanvasLayer
+{
+    public override void _Ready()
+    {
+        Layer = 100;
+        ProcessMode = ProcessModeEnum.Always;
+        EnsureLabel();
+    }
+
+    public void SetStatus(DebugSettings settings, string loadedSceneId)
+    {
+        Label label = EnsureLabel();
+        label.Text = $"Debug boot: {settings.BootMode}\nSeed: {settings.Seed}\nScene: {loadedSceneId}\nDebug: {OS.IsDebugBuild()}";
+    }
+
+    private Label EnsureLabel()
+    {
+        if (m_StatusLabel is not null)
+        {
+            return m_StatusLabel;
+        }
+
+        m_StatusLabel = GetNodeOrNull<Label>("StatusLabel");
+        if (m_StatusLabel is null)
+        {
+            m_StatusLabel = new Label { Name = "StatusLabel" };
+            AddChild(m_StatusLabel);
+        }
+
+        m_StatusLabel.MouseFilter = Control.MouseFilterEnum.Ignore;
+        m_StatusLabel.Position = new Vector2(8.0f, 8.0f);
+        m_StatusLabel.AutowrapMode = TextServer.AutowrapMode.Off;
+        return m_StatusLabel;
+    }
+
+    private Label? m_StatusLabel;
+}