## HUD — heads-up display with back button and music toggle.
extends CanvasLayer

var _music_enabled: bool = true


func _ready() -> void:
	pass


func _on_back_button_pressed() -> void:
	get_tree().quit()


func _on_music_toggle_pressed() -> void:
	_music_enabled = not _music_enabled
	var volume: float = AudioManager.DEFAULT_MUSIC_VOLUME if _music_enabled else 0.0
	AudioManager.set_music_volume(volume)
	var btn: Button = get_node_or_null("MusicToggle") as Button
	if btn != null:
		btn.text = "♪" if _music_enabled else "✕"