extends Button


const INFINITY_SIGIL := "▬↨"


onready var back_arrow: TextureRect = $"../BackArrow"
onready var next_arrow: TextureRect = $"../NextArrow"


func _ready() -> void:
	_update_display()


func _update_display() -> void:
	if Game.use_lives:
		text = "%03d" % Game.marathon_lives
	else:
		text = INFINITY_SIGIL


func _gui_input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_left"):
		if Game.use_lives:
			Game.marathon_lives -= 1
			if Game.marathon_lives < 0:
				Game.use_lives = false
		else:
			Game.use_lives = true
			Game.marathon_lives = 999
	if event.is_action_pressed("ui_right"):
		if Game.use_lives:
			Game.marathon_lives += 1
			if Game.marathon_lives > 999:
				Game.use_lives = false
		else:
			Game.use_lives = true
			Game.marathon_lives = 0
	_update_display()


func _on_focus_entered() -> void:
	back_arrow.visible = true
	next_arrow.visible = true


func _on_focus_exited() -> void:
	back_arrow.visible = false
	next_arrow.visible = false