@tool
extends Node

const _CONSTANTS = preload("res://addons/reedcamera/_data/CameraSystemConst.gd")

var _screen_size : Vector2i

func _enter_tree() -> void:
	if not Engine.has_singleton(_CONSTANTS.CAMERA_SYSTEM_NAME):
		Engine.register_singleton(_CONSTANTS.CAMERA_SYSTEM_NAME, self)

func _ready() -> void:
	# Setting default screensize
	_screen_size = Vector2i(
		ProjectSettings.get_setting("display/window/size/viewport_width"),
		ProjectSettings.get_setting("display/window/size/viewport_height")
	)

	# For editor
	if Engine.is_editor_hint():
		ProjectSettings.settings_changed.connect(func():
			_screen_size = Vector2i(
				ProjectSettings.get_setting("display/window/size/viewport_width"),
				ProjectSettings.get_setting("display/window/size/viewport_height")
			)
		)
	# For runtime
	else:
		get_tree().get_root().size_changed.connect(func():
			_screen_size = get_viewport().get_visible_rect().size
		)

func get_screen_size() -> Vector2i:
	return _screen_size