extends Control

const WelcomeScreen := preload("./screens/welcome_screen/WelcomeScreen.gd")

const LoadingScreen := preload("./LoadingScreen.gd")

const ReportFormPopup := preload("./components/popups/ReportFormPopup.gd")

const SettingsPopup := preload("./components/popups/SettingsPopup.gd")

export var default_course := "res://course/course-learn-gdscript.tres"

var _unloading_target: Control

var _loading_target: Control

var _course_navigator: UINavigator

onready var _pages := $Pages as Control

onready var _loading_screen := $Pages/LoadingScreen as LoadingScreen

onready var _welcome_screen := $Pages/WelcomeScreen as WelcomeScreen

onready var _settings_screen := $Pages/SettingsScreen as Control

onready var _course_screen := $Pages/CourseScreen as Control

onready var _settings_popup := $SettingsPopup as SettingsPopup

onready var _report_form_popup := $ReportFormPopup as ReportFormPopup

var _user_profile := UserProfiles.get_profile()

func _init() -> void:

_update_framerate(_user_profile.framerate_limit)

_user_profile.connect("framerate_limit_changed", self, "_update_framerate")

OS.low_processor_usage_mode = true

OS.low_processor_usage_mode_sleep_usec = 20000

func _ready() -> void:

_settings_popup.hide()

_report_form_popup.hide()

_update_welcome_button()

_loading_screen.connect("faded_in", self, "_on_loading_faded_in")

_loading_screen.connect("loading_finished", self, "_on_loading_finished")

_welcome_screen.connect("course_requested", self, "_on_course_requested")

Events.connect("report_form_requested", _report_form_popup, "show")

Events.connect("settings_requested", _settings_popup, "show")

Events.connect("course_completed", self, "_show_end_screen")

NavigationManager.connect("welcome_screen_navigation_requested", self, "_go_to_welcome_screen")

# Needed to navigate back from the end screen to the outliner.

NavigationManager.connect("outliner_navigation_requested", _course_screen, "show")

if NavigationManager.current_url != "":

_on_course_requested()

return

_loading_screen.hide()

_welcome_screen.appear()

func _unhandled_input(event: InputEvent) -> void:

# We need to check the distraction free mode to avoid conflicts with the

# button in UIPractice.

if (

event.is_action_pressed("toggle_full_screen")

and not event.is_action_pressed("toggle_distraction_free_mode")

):

Events.emit_signal("fullscreen_toggled")

accept_event()

# Use this function to manually display the loading screen and control its

# progress. To increase the loading progress, set

# _loading_screen.progress_value. When the value reaches 1.0, the loading screen

# disappears automatically.

func start_loading(target: Control) -> void:

_loading_target = target

_loading_screen.reset_progress_value()

_loading_screen.fade_in()

# Immediately displays the loaded target after playing the loading screen

# animation. If the loading screen is transparent, this function doesn't fade it

# in.

func load_immediately(target: Control) -> void:

_loading_target = target

_loading_screen.reset_progress_value()

_loading_screen.show()

_loading_screen.progress_value = 1.0

func _on_course_requested(force_outliner: bool = false) -> void:

_unloading_target = _welcome_screen

start_loading(_course_screen)

_loading_screen.progress_value = 0.5

yield(get_tree(), "idle_frame")

if default_course.empty():

# We completely failed, chief!

printerr("Missing the default course path, make sure to set it in the UICore scene.")

return

# We don't preload this scene, nor the course resource, so that the initial load into the app

# is faster.

# FIXME: Use interactive loader instead?

var course_navigator_scene := load("res://ui/UINavigator.tscn") as PackedScene

_course_navigator = course_navigator_scene.instance()

_course_navigator.course = load(default_course) as Course

var user_profile = UserProfiles.get_profile()

var lesson_id = user_profile.get_last_started_lesson(default_course)

if not lesson_id.empty():

_course_navigator.set_start_from_lesson(lesson_id)

_course_navigator.load_into_outliner = force_outliner

_course_screen.add_child(_course_navigator)

_loading_screen.progress_value = 1.0

func _on_loading_faded_in() -> void:

if _unloading_target and is_instance_valid(_unloading_target):

_unloading_target.hide()

_unloading_target = null

func _on_loading_finished() -> void:

if _loading_target and is_instance_valid(_loading_target):

_loading_target.show()

_loading_target = null

func _show_end_screen(_course: Course) -> void:

var show_sponsored_screen := UserProfiles.get_profile().is_sponsored_profile

for page in _pages.get_children():

page.hide()

if show_sponsored_screen:

get_tree().change_scene("res://ui/screens/end_screen/EndScreen.tscn")

else:

get_tree().change_scene("res://ui/screens/end_screen/SponsorlessEndScreen.tscn")

func _go_to_welcome_screen() -> void:

_course_screen.hide()

_course_navigator.queue_free()

_update_welcome_button()

start_loading(_welcome_screen)

_loading_screen.progress_value = 1.0

func _update_welcome_button() -> void:

if default_course.empty():

return

var user_profile = UserProfiles.get_profile()

var lesson_id = user_profile.get_last_started_lesson(default_course)

_welcome_screen.set_button_continue(not lesson_id.empty())

func _update_framerate(new_framerate: int) -> void:

if new_framerate == 0:

new_framerate = 1000

OS.low_processor_usage_mode_sleep_usec = 1_000_000 / new_framerate