Working on settings

global/Global.gd

@@ -1,4 +1,5 @@
 extends Node
+## The singleton of all singletons
 
 @onready var PauseMenu := $PauseMenu/Root
 
@@ -31,5 +32,32 @@ func player_init(player: Node):
 		player.queue_free()
 
 
+# Saving: settings and in-game-saves are handled differently
+var settings := {
+	"vsync" : true,
+}
+
+## Saves settings
+func apply_settings():
+	var json_string = JSON.stringify(settings)
+	var settings_file = FileAccess.open("user://settings.json", FileAccess.WRITE)
+	settings_file.store_string(json_string)
+	settings_file.close()
+
+func load_settings():
+	var settings_file = FileAccess.open("user://settings.json", FileAccess.READ)
+	var json_string = settings_file.get_line()
+	var json = JSON.new()
+	var parse_result = json.parse(json_string)
+	if not parse_result == OK:
+		printerr("Failed to load settings")
+		return
+	settings = parse_result.data
+
 func _on_exit_game_pressed():
 	get_tree().quit()
+
+func _on_vsync_toggled(toggled_on: bool) -> void:
+	settings["vsync"] = toggled_on
+	DisplayServer.window_set_vsync_mode(DisplayServer.VSYNC_ENABLED if toggled_on else DisplayServer.VSYNC_DISABLED)
+	apply_settings()

global/Global.tscn

@@ -50,7 +50,7 @@ grow_vertical = 2
 theme_override_constants/separation = 10
 alignment = 1
 
-[node name="Label" type="Label" parent="PauseMenu/Root/Panel/VBoxContainer"]
+[node name="Title" type="Label" parent="PauseMenu/Root/Panel/VBoxContainer"]
 layout_mode = 2
 text = "Pause"
 
@@ -58,4 +58,10 @@ text = "Pause"
 layout_mode = 2
 text = "Exit Game"
 
+[node name="Vsync" type="CheckButton" parent="PauseMenu/Root/Panel/VBoxContainer"]
+layout_mode = 2
+text = "Vsync"
+
 [connection signal="pressed" from="PauseMenu/Root/Panel/VBoxContainer/ExitGame" to="." method="_on_exit_game_pressed"]
+[connection signal="pressed" from="PauseMenu/Root/Panel/VBoxContainer/Vsync" to="." method="_on_vsync_pressed"]
+[connection signal="toggled" from="PauseMenu/Root/Panel/VBoxContainer/Vsync" to="." method="_on_vsync_toggled"]