add graphics settings save

core/game_menu/settings_menu.gd

@@ -5,18 +5,36 @@ class_name SettingsMenu
 @onready var audio_options_container: VBoxContainer = $%AudioOptionsContainer
 @onready var aliasing_checkbox: CustomCheckbox = $%AliasingCheckbox
 
+@onready var window_option_menu = $VBoxContainer/WindowOptionMenu
+
 func _ready() -> void:
 	_refresh_audio_options()
 	
 	if aliasing_checkbox:
-		aliasing_checkbox.button_pressed = get_viewport().use_taa or get_viewport().msaa_3d != Viewport.MSAA_DISABLED
+		aliasing_checkbox.button_pressed = GameState.save_data.anti_aliasing
 		aliasing_checkbox.toggled.connect(_on_aliasing_toggled)
 
+	if window_option_menu:
+		var initial_res = Vector2i(GameState.save_data.resolution_x, GameState.save_data.resolution_y)
+		window_option_menu.initialize(GameState.save_data.window_mode_index, initial_res)
+		window_option_menu.mode_changed.connect(_on_window_mode_changed)
+		window_option_menu.resolution_changed.connect(_on_resolution_changed)
+
 func _on_aliasing_toggled(toggled_on: bool) -> void:
-	get_viewport().use_taa = toggled_on
-	var msaa_mode = Viewport.MSAA_2X if toggled_on else Viewport.MSAA_DISABLED
-	get_viewport().msaa_3d = msaa_mode
-	get_viewport().msaa_2d = msaa_mode
+	GameState.save_data.anti_aliasing = toggled_on
+	GameState.save_game()
+	GameState.apply_video_settings()
+
+func _on_window_mode_changed(mode_index: int) -> void:
+	GameState.save_data.window_mode_index = mode_index
+	GameState.save_game()
+	GameState.apply_video_settings()
+
+func _on_resolution_changed(resolution: Vector2i) -> void:
+	GameState.save_data.resolution_x = resolution.x
+	GameState.save_data.resolution_y = resolution.y
+	GameState.save_game()
+	GameState.apply_video_settings()
 
 func _get_audio_options() -> Array[AudioOption]:
 	var audio_options: Array[AudioOption] = []

core/game_menu/window_option_menu.gd

@@ -6,6 +6,7 @@ signal resolution_changed(resolution: Vector2i)
 @export var window_option_menu_button_scene: PackedScene
 
 var current_mode_index: int = 0
+var current_resolution: Vector2i = Vector2i.ZERO
 
 var available_resolutions: Array[Vector2i] = [
 	Vector2i(1280, 720),
@@ -37,6 +38,11 @@ func _ready() -> void:
 	_populate_resolutions()
 	_update_ui()
 
+func initialize(mode_index: int, res: Vector2i) -> void:
+	current_mode_index = mode_index
+	current_resolution = res
+	_update_ui()
+
 func _populate_resolutions() -> void:
 	var screen_size = DisplayServer.screen_get_size()
 	
@@ -63,6 +69,7 @@ func _on_resolution_selected(res: Vector2i, btn) -> void:
 		button.deselect()
 	
 	btn.select()
+	current_resolution = res
 	resolution_changed.emit(res)
 
 func _on_left_arrow_pressed() -> void:
@@ -95,7 +102,16 @@ func _update_ui() -> void:
 		else:
 			button.disable()
 
-	var btn = res_buttons[0]
-	btn.select()
-	if show_res:
-		resolution_changed.emit(available_resolutions[0])
+	if res_buttons.size() > 0:
+		var target_index = 0
+		for idx in range(_valid_resolutions.size()):
+			if _valid_resolutions[idx] == current_resolution:
+				target_index = idx
+				break
+		
+		var btn = res_buttons[target_index]
+		btn.select()
+		current_resolution = _valid_resolutions[target_index]
+		
+		if show_res:
+			resolution_changed.emit(current_resolution)