How to set position of 2D node with respect to control node

[maksym33]

Godot Version

4.4

Question

I want to set position for the GPU Particles (2D node) into the middle of TextureRect (control), lets say as a part of the UI (so that it shouldn’t move in regards to the player screen).
From what I understand, the way to put 2D Nodes into GUI is to put them on separate CanvasLayer to ‘freeze’ their placement.
However, I cannot locate the transform needed to put the particles relative to a control node (whose position is technically 0,0):

The particles are a child of the Drawer Node, which is situated into hbox/vbox containers with some added control nodes for margins.

Would appreciate any help/leads.

EDIT:
For global position of the drawer node:

print("Drawer node Global pos",global_position)

I still get:

Drawer node Global pos(0.0, 0.0)

Thanks,
Maks

[hexgrid]

For a node, position is where it is relative to its parent. global_position is its absolute position in the world.

[maksym33]

see edit

[hexgrid]

When are you sampling that? It ought to be updating at runtime. If you put your print in the drawer script’s _process(), do you just endlessly get zeros?

[maksym33]

Yeah, you were right - I was doing that during _ready, and so it was not detecting the transforms from the Drawer node’s parents.

[hexgrid]

My understanding is that _ready() or @onready are when the node enters the tree, but this doesn’t guarantee that all the surrounding setup is done. I’m not sure if there’s a “container layout change” signal you could hook, but if there is…

[maksym33]

I’ve just used call_deferred to setup the particle node’s postion.