a bit of restructuring, renaming, and c sharp setup

prefabs/interaction_area.tscn

@@ -0,0 +1,28 @@
+[gd_scene load_steps=3 format=3 uid="uid://ob04y3syvo0e"]
+
+[ext_resource type="Script" uid="uid://bfwe1vlfyknm7" path="res://scripts/GdScript/interaction_area.gd" id="1_26v5g"]
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_i8sim"]
+radius = 1.0
+
+[node name="InteractionArea" type="Node3D"]
+script = ExtResource("1_26v5g")
+
+[node name="Area3D" type="Area3D" parent="."]
+collision_mask = 16
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="Area3D"]
+shape = SubResource("SphereShape3D_i8sim")
+
+[node name="Label3D" type="Label3D" parent="."]
+sorting_offset = 100.0
+pixel_size = 0.001
+billboard = 1
+no_depth_test = true
+fixed_size = true
+text = "<E>"
+font_size = 98
+outline_size = 22
+
+[connection signal="body_entered" from="Area3D" to="Label3D" method="show"]
+[connection signal="body_exited" from="Area3D" to="Label3D" method="hide"]