extends Node2D
## Title screen: a big core with balls bouncing around it, and the saved level.

const BALL_SCENE := preload("res://scenes/ball.tscn")

var _level := 0


func _ready() -> void:
	var screen := get_viewport_rect().size
	$Core.position = Vector2(screen.x / 2.0, screen.y * 0.25)
	for i in 10:
		var ball: Ball = BALL_SCENE.instantiate()
		ball.position = Vector2(screen.x / 2.0, screen.y - Params.BALL_RADIUS * 2.0)
		$Balls.add_child(ball)
		ball.throw()

	var progress := Progress.load_level()
	_level = progress[0]
	if _level != 0:
		$UI/LevelInfo.text = Params.MSG_LEVEL_BACK % [_level, progress[1]]
	$UI/Start.pressed.connect(_on_start_pressed)


func _on_start_pressed() -> void:
	Progress.current_level = _level
	get_tree().change_scene_to_file("res://scenes/game.tscn")