Upbge: Related to the Logic Node Add-On: prop_search causes crash when file contains linked NodeTrees

Created on 29 Aug 2020 · 7Comments · Source: UPBGE/upbge

I encountered a problem with the Node Add-On in 0.3.0

The more recent Builds seem to have a problem with linked NodeTrees, causing Blender to quit as soon as a prop_search for NodeTrees is triggered.
The Nodes that cause this issue are the ones in the "Logic Tree" Category of the AddOn. It happens as soon as a new Tree is linked, be it a material group or a logic tree

Any idea on what could cause this? I'm out of ideas.

Source

IzaZed

Most helpful comment

It is a blender commit between 28-06-2020 (works) and 05-07-2020 (not work)

lordloki on 29 Aug 2020

👍2

All 7 comments

Could you post an small imagen or blend to try or reproduce it?

I did some tests but i'm not very good with logic nodes and i couldn't crash

lordloki on 29 Aug 2020

It shouldn't need a particular node setup

Posting a blend is difficult because you need a linked NodeTree from another file to get it to crash

Basically, link any NodeTree from a different file (Shader Groups or Logic Trees are NodeTree datablocks) with Ctrl+Shift+O
Create a New Logic Tree
Add a Node from the Logic Tree Category
Try to select a NodeTree

That should lead to the crash

IzaZed on 29 Aug 2020

Hi, I guess this problem is related to a blender commit related to nodetrees/or link more than something related to bge's code?
What you can do is trying to find between which versions of upbge 0.3 the crash begun to appear (in old builds). Then look at the git log between the 2 dates to see if there is a commit from jackques Luckes or any other blender developer related to nodetrees / or link which could be the cause of the crash.

Also, you can check here: https://developer.blender.org/maniphest/ if a similar bug has not been reported?