options screen functionality :):):):):)

objects/hud/options_screen.gd

@@ -1,13 +1,63 @@
 extends Control
 
+# emmitted when "back" is pressed
+signal exit
+
 export (StyleBox) var tab_selected_style
 
 onready var tabs = $Tabs
+onready var confirm_dialog = $ConfirmDialog
+
+# option controls #
+# game
+onready var rumble = $"%Rumble"
+# video
+onready var fullscreen = $"%Fullscreen"
+onready var window_size = $"%WindowSize"
+onready var scaling_mode = $"%ScalingMode"
+onready var transition_speed = $"%TransitionSpeed"
+# audio
+onready var master_volume = $"%MasterSlider"
+onready var music_volume = $"%MusicSlider"
+onready var sound_volume = $"%SoundSlider"
+
+# flagged when options have been changed
+var dirty = false
 
 func focus():
+	load_options(Options)
+	dirty = false
 	visible = true
+	confirm_dialog.visible = false
 	grab_focus()
 
+func load_options(options):
+	# game
+	rumble.select(options.rumble)
+	# video
+	fullscreen.select(1 if options.fullscreen else 0) # index 1 is the "on" button
+#	window_size.select(options.window_size)
+	scaling_mode.select(options.scaling_mode)
+	transition_speed.select(options.transition_speed)
+	# audio
+	master_volume.value = options.master_volume
+	music_volume.value = options.music_volume
+	sound_volume.value = options.sound_volume
+
+func apply_options():
+	# game
+	Options.rumble = rumble.get_selection()
+	# video
+	Options.fullscreen = fullscreen.get_selection() == 1 # true if 1, otherwise false
+#	Options.window_size = window_size.get_selection()
+	Options.scaling_mode = scaling_mode.get_selection()
+	Options.transition_speed = transition_speed.get_selection()
+	# audio
+	Options.master_volume = master_volume.value
+	Options.music_volume = music_volume.value
+	Options.sound_volume = sound_volume.value
+	print(Options.master_volume)
+
 func _gui_input(event):
 	if event.is_action_pressed("ui_left"):
 		tabs.current_tab = posmod(tabs.current_tab - 1, tabs.get_child_count())
@@ -18,10 +68,35 @@ func _gui_input(event):
 		current_tab.get_node(current_tab.focus_neighbour_bottom).grab_focus()
 	accept_event()
 
+func _physics_process(delta):
+	if Input.is_action_just_pressed("ui_accept"):
+		apply_options()
+	elif Input.is_action_just_pressed("ui_cancel"):
+		if dirty:
+			confirm_dialog.visible = true
+			confirm_dialog.grab_focus()
+		else:
+			emit_signal("exit")
+	elif Input.is_action_just_pressed("ui_reset"):
+		load_options(Options.defaults)
+		dirty = true
+
+# "_unused" is a dirty hack,
+# but it means we can connect signals that provide parameters
+func _mark_dirty(_unused = null, _unused2 = null):
+	dirty = true
+
+func _on_ConfirmDialog_gui_input(event):
+	if event.is_action_pressed("ui_accept"):
+		apply_options()
+		confirm_dialog.visible = false
+		emit_signal("exit")
+	elif event.is_action_pressed("ui_cancel"):
+		confirm_dialog.visible = false
+		emit_signal("exit")
 
 func _on_tabs_focus_entered():
 	tabs.set("custom_styles/tab_fg", tab_selected_style)
 
-
 func _on_tabs_focus_exited():
 	tabs.set("custom_styles/tab_fg", null)