Re-add layer to Collectable

behaviours/collectable.tscn

@@ -9,7 +9,6 @@ radius = 16.0
 script = ExtResource("1_p0pc3")
 
 [node name="MouseArea" type="Area2D" parent="."]
-collision_layer = 0
 collision_mask = 0
 monitorable = false
 

behaviours/drop_on_free.gd

@@ -0,0 +1,11 @@
+extends Node2D
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass

behaviours/drop_on_free.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://dv7ea2y0l46e"]
+
+[ext_resource type="Script" path="res://behaviours/drop_on_free.gd" id="1_4xihn"]
+
+[node name="DropOnFree" type="Node2D"]
+script = ExtResource("1_4xihn")