godotengine / godotengine/godot
Duplicating a node tree with a @tool script that edits global_position/global_rotation causes nodes to lose their transforms
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- C++
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Description
Tested versions
- Reproducible in: v4.2.1.stable
System information
Godot v4.2.1.stable - Windows 10.0.22631 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3060 Laptop GPU (NVIDIA; 31.0.15.5176) - AMD Ryzen 5 5600H with Radeon Graphics (12 Threads)
Issue description
Duplicating a node tree with a @tool script that edits global_position/global_rotation causes nodes to lose their transforms.
A spam of scene/3d/node_3d.cpp:343 - Condition "!is_inside_tree()" is true. Returning: Transform3D() errors print in the console.
https://github.com/godotengine/godot/assets/39361911/9985cc7f-d814-413c-a53a-0601109b8230
Steps to reproduce
Create a Node3D, with a set of Node3D children
Attach a @tool script to the children that has a function that changes global_position/global_rotation
Create a exported bool "button" that allows the function to be called from the inspector, such as @export var function: bool = false : set = function_exec
Duplicate the Node3D
Minimal reproduction project (MRP)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked Script_Position_Bug.zip reproduction and follow the reported errors at scene/3d/node_3d.cpp:343 during Node3D duplication. Reproduce the @tool script that changes global_position/global_rotation, then verify that duplicating the tree preserves node transforms without the is_inside_tree() errors.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- game-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100