Gonna invent a scripting language lol

entity/player/PlayerCamera.gd

@@ -1,3 +1,4 @@
+@tool
 class_name PlayerCamera extends Node
 
 const CAMERA_PIXELS_PER_UNIT = 1.0
@@ -8,6 +9,9 @@ const CAMERA_PIXEL_SCALE = 1.0
 @export var offset:Vector3 = Vector3(0, 0, 12)
 
 func _process(delta: float) -> void:
+	if !camera || !target:
+		return
+
 	# I tried a few things but this is most consistent for both backbuffer and
 	# framebuffer viewports.
 	var viewportHeight = get_viewport().get_visible_rect().size.y;