invalid call. nonexistent function 'damege' in base 'nil'

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:bust_in_silhouette: Asked By maimon

I have 2 nodes in the enemy node the first is HurtBox which has a script:

if owner.has_node("Health"):
	var health : Health
	health.damege(10)

and the second is Health which has a script:

extends Node2D
class_name Health

.

func damege(amount : int):
health -= amount
if health <= 0:
	get_parent().queue_free()

I don’t know why I can’t use the Damege function

note: when I ctrl+click on it, it takes me to damage func in the Health script

my godot version 3.5.2

It looks like you declare the health variable, but don’t initialize it to any value in your Hurtbox script. var health says make me a new variable and : Health tells Godot that the variable health you are making has a type of Health (matches the Health class). This means Godot will know that health should have a damege function and will find it when you ctrl + click on it. But you are missing the part where you initialize your variable health to something. That’d look something like var health : Health = owner.get_node('Health')

Tom Mertz | 2023-05-22 22:12

2
:bust_in_silhouette: Reply From: jgodfrey

The problem is that the object you’re calling damege() on is NULL. You don’t show that in your code, but you likely have something like this:

enemy.damege(100)

The error means that enemy (in my above example) is NULL. That is, it’s not a valid reference to an object.