Major collision detection improvements, more file organization, and added key interactable

Levels/Interactables/Silver Key Pickup.gd

@@ -0,0 +1,9 @@
+extends Area2D
+
+
+func _on_silver_key_pickup_body_entered(body: Node):
+    if 'player' in body.get_groups():
+        body.add_item('Silver Key')
+
+    call_deferred('queue_free')
+    return

Levels/Interactables/Silver Key Pickup.tscn

@@ -0,0 +1,23 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://Sprites/Levels/Interactables/Silver_Key.png" type="Texture" id=1]
+[ext_resource path="res://Levels/Interactables/Silver Key Pickup.gd" type="Script" id=2]
+
+[sub_resource type="CircleShape2D" id=1]
+
+[node name="Silver Key Pickup" type="Area2D"]
+collision_layer = 0
+collision_mask = 2
+monitorable = false
+script = ExtResource( 2 )
+
+[node name="Sprite" type="Sprite" parent="."]
+texture = ExtResource( 1 )
+centered = false
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+visible = false
+position = Vector2( 8, 8 )
+shape = SubResource( 1 )
+
+[connection signal="body_entered" from="." to="." method="_on_silver_key_pickup_body_entered"]