after remove_child() the child become null?

Question

print(pickable)
pickable.get_parent().remove_child(pickable)
print(pickable)
add_child(pickable)

pickable is the child l want to change his parent. But after call the remove_child, pickable become null. Log shows like:

    pickaxe:<RigidBody2D#27078427832>
    <null>

can anyone help me, thanks

Comments

What happens if you re-add it? It might be because it's briefly an orphan.

Answer 1

You want to use move_child not remove_child.

Documentation is here, https://docs.godotengine.org/en/stable/classes/class_node.html?highlight=move_child#methods

Comments

thanks, but not help. The script node and the pickable node have same parent, and l want the pickable to become current script node's child.

And the main question is this: why remove_child() will make pickable node null? So strange

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The remove node will set the owner of the removed Node (or its descendants) to be null, if that owner is no longer a parent or ancestor.