extends Node2D

@export_enum("angry", "neutral", "happy", "laugh") var expression

@export var sprite_laugh : Sprite2D
@export var sprite_happy : Sprite2D
@export var sprite_neutral : Sprite2D
@export var sprite_unhappy : Sprite2D

var person_controller : AudienceMember

var expression_map = {
	"angry" : sprite_unhappy,
	"neutral" : sprite_neutral,
	"happy" : sprite_happy,
	"laugh" : sprite_laugh,
}

const expression_change_speed : float = 1.5
const color_transparent : Color = Color(1, 1, 1, 0)
const color_visible : Color = Color(1, 1, 1, 1)

# Called when the node enters the scene tree for the first time.
func _ready():
	person_controller = null
	expression = person_controller.expression
	reset_face()
	
func _process(_delta):
	if expression != person_controller.expression:
		update_face(person_controller.expression)
		expression != person_controller.expression

func reset_face():
	for expr in expression_map:
		if expr == expression:
			expression_map[expr].modulate = color_visible
		else:
			expression_map[expr].modulate = color_transparent

func update_face(new_expression: String):
	var tween = get_tree().create_tween().bind_node(self).set_parallel().set_trans(Tween.TRANS_LINEAR)
	tween.tween_property(expression_map[expression], "modulate", color_transparent, expression_change_speed)
	tween.tween_property(expression_map[new_expression], "modulate", color_visible, expression_change_speed)