class_name FadeOverlay
extends ColorRect

signal on_complete_fade_in
signal on_complete_fade_out

@export var fade_in_duration: float = 2.0
@export var fade_out_duration: float = 1.0
@export var auto_fade_in: bool = true 
@export var minimum_opacity: float = 1.0

func _ready():
	modulate.a = minimum_opacity
	if auto_fade_in:
		fade_in()

func fade_in():
	var tween = create_tween().set_trans(Tween.TRANS_CUBIC)
	tween.tween_property(self, "modulate", Color(modulate, 0.0), fade_in_duration)\
	.finished.connect(_on_complete_fade_in)

func fade_out():
	var tween = create_tween().set_trans(Tween.TRANS_CUBIC)
	tween.tween_property(self, "modulate", Color(modulate, minimum_opacity), fade_out_duration)\
	.finished.connect(_on_complete_fade_out)

func _on_complete_fade_out():
	emit_signal("on_complete_fade_out")
	
func _on_complete_fade_in():
	emit_signal("on_complete_fade_in")