Quit the game

scenes/main.tscn

@@ -1,6 +1,14 @@
-[gd_scene format=2]
+[gd_scene load_steps=3 format=2]
 
-[node name="Main" type="Node2D"]
+[ext_resource path="res://scenes/main.gd" type="Script" id=1]
+
+[sub_resource type="GDScript" id=1]
+script/source = "extends LinkButton
+
+# Quit the game with properly exit code"
+
+[node name="Main" type="Node"]
+script = ExtResource( 1 )
 
 [node name="Grid" type="GridContainer" parent="."]
 margin_left = -1.33484
@@ -40,3 +48,6 @@ margin_top = 72.0
 margin_right = 151.0
 margin_bottom = 86.0
 text = "Quitter"
+script = SubResource( 1 )
+
+[connection signal="pressed" from="Grid/Quit" to="." method="_on_Quit_pressed"]