Some tutorial

spike.tscn

@@ -4,7 +4,7 @@
 [ext_resource type="Texture2D" uid="uid://bu5wgerfu7cbc" path="res://art/spike.png" id="2_7k7bx"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_xfwl5"]
-size = Vector2(15, 12)
+size = Vector2(15, 7.5)
 
 [node name="Spike" type="Node2D" unique_id=1739014101]
 script = ExtResource("1_7k7bx")
@@ -17,7 +17,7 @@ texture = ExtResource("2_7k7bx")
 [node name="Area2D" type="Area2D" parent="." unique_id=170499029]
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D" unique_id=1865546056]
-position = Vector2(-0.5, 0)
+position = Vector2(0, 4.75)
 shape = SubResource("RectangleShape2D_xfwl5")
 
 [connection signal="body_entered" from="Area2D" to="." method="on_contact"]