Tween shake does not exists anymore?

[moutpessemier]

Godot Version

4.2.1

Question

Is there an alternative tween property to use for the shake?

I’ve got this ShakeComponent which shakes the sprite, but when I try to use it, it gives me the following error:

E 0:00:01:0457 shake_component.gd:14 @ tween_shake(): The tweened property “shake” does not exist in object “ShakeComponent:<Node#31004296503>”.
<C++ Error> Condition “!prop_valid” is true. Returning: nullptr
<C++ Source> scene/animation/tween.cpp:110 @ tween_property()
shake_component.gd:14 @ tween_shake()
enemy.gd:16 @ ()
hitbox_component.gd:15 @ _on_hurtbox_entered()

class_name ShakeComponent
extends Node

var current_shake = 0

@export var sprite: Node2D
@export var shake_amount: = 2.0
@export var shake_duration: = 0.4

func tween_shake():
	current_shake = shake_amount
	var tween = create_tween()
	tween.tween_property(self, "shake", 0.0, shake_duration).from_current()

func _physics_process(delta: float) -> void:
	sprite.position = Vector2(randf_range(-current_shake, current_shake), randf_range(-current_shake, current_shake))

I’m wondering if there is an alternative to use the shake property which would work

[gertkeno]

Node does not have a “shake” property, did you mean to edit the “current_shake” you have defined?

[moutpessemier]

I want to shake a Sprite2D for the duration of shake_duration for x and y between - current_shake and current_shake.

You say a Node2D doesn’t have a shake property. Where could I read up on what nodes have what properties?

[gertkeno]

Pressing F1 will pull up a help search in Godot, you can read the docs on Node or Node2D to learn what properties it has. You could search for “shake” but nothing has that property, i suspect you mean to use “current_shake” as that variable is in your script.

[moutpessemier]

You’re right, I clearly need to read up on how to use tweens and edit their properties. Thanks for the help!

[javier.8]

Do you even need tweens?
You already have all the info you need. Is this what you’re going for?
I changed the amount to 5 so it’s more noticeable and so that when you press the space bar you start shaking the image.

If this is what you need, without the need for tweens, here’s the code:

class_name ShakeComponent
extends Node2D

var current_shake = 0

@export var sprite: Node2D
@export var shake_amount: = 5.0
@export var shake_duration: = 1


func _physics_process(delta: float) -> void:
	if Input.is_action_just_pressed("ui_accept") and current_shake == 0:
		current_shake = shake_amount
	
	current_shake -= shake_amount * delta / shake_duration
	if current_shake < 0:
		current_shake = 0
	
	sprite.position = Vector2(randf_range(-current_shake, current_shake), randf_range(-current_shake, current_shake))