move Scene code into a class

project_name/DefaultScene.cs

@@ -0,0 +1,20 @@
+using Nez;
+using Nez.ImGuiTools;
+
+namespace project_name
+{
+    public class DefaultScene : Scene
+    {
+        public override void initialize()
+        {
+            setDesignResolution( Screen.width, Screen.height, Scene.SceneResolutionPolicy.None );
+
+            addRenderer(new DefaultRenderer());
+
+            var logo = content.Load<Microsoft.Xna.Framework.Graphics.Texture2D>("nez-logo-black");
+            createEntity("logo")
+                .setPosition(Screen.center)
+                .addComponent(new Nez.Sprites.Sprite(logo));
+        }
+    }
+}

project_name/Game1.cs

@@ -16,21 +16,11 @@ namespace project_name
             System.Diagnostics.Debug.Listeners.Add(new System.Diagnostics.TextWriterTraceListener(System.Console.Out));
 #endif
 
-			// setup a Scene so we have something to show
-			var newScene = new Scene();
-            newScene.addRenderer(new DefaultRenderer());
-
-            var logo = newScene.content.Load<Microsoft.Xna.Framework.Graphics.Texture2D>("nez-logo-black");
-            newScene.createEntity("logo")
-                .setPosition(Screen.center)
-                .addComponent(new Nez.Sprites.Sprite(logo));
-
-            scene = newScene;
+            scene = new DefaultScene();
             
             // optionally render Nez in an ImGui window
 			var imGuiManager = new ImGuiManager();
-			Core.registerGlobalManager( imGuiManager );
-			imGuiManager.setEnabled( true );
+			Core.registerGlobalManager(imGuiManager);
         }
     }
 }