simple button behaviour

Controller.cs

@@ -3,10 +3,27 @@ using System;
 
 public partial class Controller : Window
 {
+	private double _closeTime = 0;
+	private bool _screenReady = true;
+	
+	private Button _btnScene1;
+	private Button _btnScene2;
+	private Button _btnScene3;
+	private Button _btnScene4;
+	private Button _btnScreen;
+	private Button _btnClose;
+	
 	
 	// Called when the node enters the scene tree for the first time.
 	public override void _Ready()
 	{
+		this._btnScene1 = this.GetNode<Button>("BtnScene1");
+		this._btnScene2 = this.GetNode<Button>("BtnScene2");
+		this._btnScene3 = this.GetNode<Button>("BtnScene3");
+		this._btnScene4 = this.GetNode<Button>("BtnScene4");
+
+		this._btnScreen = this.GetNode<Button>("BtnScreen");
+		this._btnClose = this.GetNode<Button>("BtnClose");
 		
 	}
 
@@ -17,27 +34,35 @@ public partial class Controller : Window
 		Vector2 rasterSize = this.Size / 4;
 		Vector2 btnSize = rasterSize - 2 * border;
 		
-		Button btnScene1 = this.GetNode<Button>("BtnScene1");
-		Button btnScene2 = this.GetNode<Button>("BtnScene2");
-		Button btnScene3 = this.GetNode<Button>("BtnScene3");
-		Button btnScene4 = this.GetNode<Button>("BtnScene4");
+		this._btnScene1.Position = border + (new Vector2(0, 0)*rasterSize);
+		this._btnScene2.Position = border + (new Vector2(1, 0)*rasterSize);
+		this._btnScene3.Position = border + (new Vector2(2, 0)*rasterSize);
+		this._btnScene4.Position = border + (new Vector2(3, 0)*rasterSize);
+		this._btnScene1.Size = btnSize;
+		this._btnScene2.Size = btnSize;
+		this._btnScene3.Size = btnSize;
+		this._btnScene4.Size = btnSize;
+		
+		this._btnScreen.Size = btnSize;
+		this._btnScreen.Position = border + (new Vector2(3, 3)*rasterSize);
+		
+		this._btnClose.Size = btnSize * new Vector2(3, 1) + border * new Vector2(4, 0);
+		this._btnClose.Position = border + (new Vector2(0, 3)*rasterSize);
+		
+		// handle close button
+		if (this._btnClose.IsPressed())
+			this._closeTime += delta;
+		else
+			this._closeTime = 0;
 
-		Button btnScreen = this.GetNode<Button>("BtnScreen");
-		Button btnClose = this.GetNode<Button>("BtnClose");
-		
-		btnScene1.Position = border + (new Vector2(0, 0)*rasterSize);
-		btnScene2.Position = border + (new Vector2(1, 0)*rasterSize);
-		btnScene3.Position = border + (new Vector2(2, 0)*rasterSize);
-		btnScene4.Position = border + (new Vector2(3, 0)*rasterSize);
-		btnScene1.Size = btnSize;
-		btnScene2.Size = btnSize;
-		btnScene3.Size = btnSize;
-		btnScene4.Size = btnSize;
-		
-		btnScreen.Size = btnSize;
-		btnScreen.Position = border + (new Vector2(3, 3)*rasterSize);
-		
-		btnClose.Size = btnSize * new Vector2(3, 1) + border * new Vector2(4, 0);
-		btnClose.Position = border + (new Vector2(0, 3)*rasterSize);
+		this._btnClose.AddThemeColorOverride("font_pressed_color", new Color((float)this._closeTime, 0, 0));
+		if (this._closeTime > 1) this.GetTree().Quit();
+
+		if (this._btnScreen.IsPressed() && this._screenReady)
+		{
+			this.GetTree().GetRoot().GetNode<MainScript>("Main").SetFullScreen();
+			this._screenReady = false;
+		}
+		else this._screenReady = true;
 	}
 }

MainScript.cs

@@ -1,7 +1,7 @@
 using Godot;
 using System;
 
-public partial class Main : Node2D
+public partial class MainScript : Node2D
 {
 	
 	// Called when the node enters the scene tree for the first time.
@@ -13,4 +13,12 @@ public partial class Main : Node2D
 	public override void _Process(double delta)
 	{
 	}
+
+	
+	public void SetFullScreen()
+	{
+		Window window = this.GetTree().GetRoot().GetNode<Window>("Main.Projection");
+		window.SetCurrentScreen(1);
+		window.Borderless = true;
+	}
 }

Projection.cs

@@ -11,6 +11,6 @@ public partial class Projection : Window
 	// Called every frame. 'delta' is the elapsed time since the previous frame.
 	public override void _Process(double delta)
 	{
-		GD.Print("Projection process");
 	}
+
 }

node_2d.tscn

@@ -4,7 +4,7 @@
 [ext_resource type="Script" uid="uid://dg0qtnm4epowu" path="res://Controller.cs" id="1_wtcfe"]
 [ext_resource type="Script" uid="uid://criv4i3x63akl" path="res://Projection.cs" id="2_0e48y"]
 
-[node name="Node2D" type="Node2D"]
+[node name="Main" type="Node2D"]
 script = ExtResource("1_0e48y")
 
 [node name="Controller" type="Window" parent="."]