make it work

godot/scenes/faces/face.gd

@@ -2,19 +2,8 @@ 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 = {}
-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)
@@ -22,21 +11,24 @@ 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_map = {
+		"angry" : $Unhappy,
+		"neutral" : $Neutral,
+		"happy" : $Happy,
+		"laugh" : $Laugh,
+	}
+	person_controller = get_node("../../../Person")
 	expression = person_controller.expression
 	reset_face()
 	
 func _process(_delta):
 	if expression != person_controller.expression:
 		update_face(person_controller.expression)
-		expression != person_controller.expression
+		expression = person_controller.expression
 
 func reset_face():
 	for expr in expression_map:
-		if expr == expression:
+		expression_map[expr].modulate = color_transparent.lerp(color_visible, 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)

godot/scenes/faces/face_curly.tscn

@@ -5,16 +5,17 @@
 [ext_resource type="Texture2D" uid="uid://oeljmd05bkvj" path="res://sprites/faces/curly_neutral.png" id="2_54uqk"]
 [ext_resource type="Texture2D" uid="uid://5iygla17stpm" path="res://sprites/faces/curly_not_amused.png" id="3_2t0h4"]
 
-[node name="FaceCurly" type="Node2D" node_paths=PackedStringArray("sprite_happy", "sprite_neutral", "sprite_unhappy")]
+[node name="FaceCurly" type="Node2D"]
 script = ExtResource("1_vcbhp")
-sprite_happy = NodePath("Happy")
-sprite_neutral = NodePath("Neutral")
-sprite_unhappy = NodePath("Unhappy")
 
 [node name="Happy" type="Sprite2D" parent="."]
 modulate = Color(1, 1, 1, 0)
 texture = ExtResource("1_7pet0")
 
+[node name="Laugh" type="Sprite2D" parent="."]
+modulate = Color(1, 1, 1, 0)
+texture = ExtResource("1_7pet0")
+
 [node name="Neutral" type="Sprite2D" parent="."]
 texture = ExtResource("2_54uqk")
 

godot/scenes/faces/face_moritz.tscn

@@ -5,8 +5,9 @@
 [ext_resource type="Texture2D" uid="uid://b0ppuni7v257g" path="res://sprites/faces/moritz_neutral.svg" id="3_s33ae"]
 [ext_resource type="Texture2D" uid="uid://7tn6ynr07tns" path="res://sprites/faces/moritz_not_amused.svg" id="4_0rss5"]
 
-[node name="FaceMoritz" type="Node2D" node_paths=PackedStringArray("sprite_happy", "sprite_neutral", "sprite_unhappy")]
+[node name="FaceMoritz" type="Node2D" node_paths=PackedStringArray("sprite_laugh", "sprite_happy", "sprite_neutral", "sprite_unhappy")]
 script = ExtResource("1_abnxg")
+sprite_laugh = NodePath("Laugh")
 sprite_happy = NodePath("Happy")
 sprite_neutral = NodePath("Neutral")
 sprite_unhappy = NodePath("Unhappy")
@@ -15,6 +16,10 @@ sprite_unhappy = NodePath("Unhappy")
 modulate = Color(1, 1, 1, 0)
 texture = ExtResource("2_0u1g1")
 
+[node name="Laugh" type="Sprite2D" parent="."]
+modulate = Color(1, 1, 1, 0)
+texture = ExtResource("2_0u1g1")
+
 [node name="Neutral" type="Sprite2D" parent="."]
 texture = ExtResource("3_s33ae")
 

godot/scenes/faces/face_ronald.tscn

@@ -5,8 +5,9 @@
 [ext_resource type="Texture2D" uid="uid://ijs3777dtv0n" path="res://sprites/faces/ronald_neutral.svg" id="3_ko187"]
 [ext_resource type="Texture2D" uid="uid://cn7dhkoupxvt8" path="res://sprites/faces/ronald_not_amused.svg" id="4_cf5hk"]
 
-[node name="FaceCurly" type="Node2D" node_paths=PackedStringArray("sprite_happy", "sprite_neutral", "sprite_unhappy")]
+[node name="FaceCurly" type="Node2D" node_paths=PackedStringArray("sprite_laugh", "sprite_happy", "sprite_neutral", "sprite_unhappy")]
 script = ExtResource("1_8nd6f")
+sprite_laugh = NodePath("Laugh")
 sprite_happy = NodePath("Happy")
 sprite_neutral = NodePath("Neutral")
 sprite_unhappy = NodePath("Unhappy")
@@ -21,3 +22,7 @@ texture = ExtResource("3_ko187")
 [node name="Unhappy" type="Sprite2D" parent="."]
 modulate = Color(1, 1, 1, 0)
 texture = ExtResource("4_cf5hk")
+
+[node name="Laugh" type="Sprite2D" parent="."]
+modulate = Color(1, 1, 1, 0)
+texture = ExtResource("2_512yk")