Optimized scene tree and debugged some area detection

Enemies/Snowball Blue.tscn

@@ -0,0 +1,18 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://Enemies/Snowball.gd" type="Script" id=1]
+[ext_resource path="res://Sprites/Enemies/blue_snowball.png" type="Texture" id=2]
+
+[sub_resource type="CircleShape2D" id=1]
+radius = 4.47823
+
+[node name="snowball_blue" type="Area2D" groups=["damage"]]
+collision_layer = 2
+script = ExtResource( 1 )
+
+[node name="Sprite" type="Sprite" parent="."]
+position = Vector2( 0, -2 )
+texture = ExtResource( 2 )
+
+[node name="snowball_blue" type="CollisionShape2D" parent="."]
+shape = SubResource( 1 )