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Maniphest T45742

Drivers in Game Engine don't work for Spawned objects
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Description

System Information
Mac OS X 10.10.4
NVIDIA GeForce 8600M GT 256 MB

Blender Version
Broken: 2.75a c27589e

In Blender Game Engine one situation where shape key drivers work is for bones that are parents and also deform a mesh.

The drivers fail when the armature is spawned during runtime.

Based on a attached .blend file with minimum amount of steps

Press P. Wait for second cube to spawn and watch. The first cube shape key drivers work. The second spawn cube is identical but the drivers don't work.

ShapeKeyTest.blend494 KBDownload

Revisions and Commits

AbandonedD1581 BGE: Fix T45742: Drivers in Game Engine don't work for Spawned objects

Related Objects

Event Timeline

Michael Carroll (mkec) created this task.Aug 10 2015, 5:21 AM
Michael Carroll (mkec) raised the priority of this task from to 90.
Michael Carroll (mkec) updated the task description. (Show Details)
Michael Carroll (mkec) added a project: BF Blender.
Michael Carroll (mkec) edited a custom field.
Michael Carroll (mkec) added a subscriber: Michael Carroll (mkec).
Bastien Montagne (mont29) edited projects, added Game Engine; removed BF Blender.Aug 10 2015, 8:10 AM
Sergey Sharybin (sergey) lowered the priority of this task from 90 to 50.Aug 24 2015, 11:29 AM
Sergey Sharybin (sergey) added subscribers: Thomas Szepe (hg1), Inês Almeida (brita_), Mitchell Stokes (moguri), Sybren A. Stüvel (sybren).
Sergey Sharybin (sergey) added a subscriber: Sergey Sharybin (sergey).
Ulysse Martin (youle) added a subscriber: Ulysse Martin (youle).Aug 29 2015, 1:52 PM
Ulysse Martin (youle) added a comment.Oct 22 2015, 1:16 AM

Hi, @Mitchell Stokes (moguri): About https://developer.blender.org/T45742 (Drivers in Game Engine don't work for spawned objects), I made a git bisect with this test file: http://www.pasteall.org/blend/38719 and found that the first bad commit was: https://developer.blender.org/rBfe05f97841c0ee3e2a6e15f2252ad160fefc3509 (multi-threaded animations). After hours of investigations :) I think the problem is linked to BL_ArmatureObject::ProcessReplica()
function, m_objArma = BKE_object_copy(m_objArma); I'm not sure but if you comment this line, the drivers for spawned objects work again... BUT the bge crashes when you escape the game. I think I'm not experimented enough to fix the bug myself (I'll make some tries however :) ) but I just wanted to inform you :)

Ulysse Martin (youle) added a revision: D1581: BGE: Fix T45742: Drivers in Game Engine don't work for Spawned objects.Oct 26 2015, 5:54 AM
Aaron Carlisle (Blendify) changed the task status from Unknown Status to Unknown Status.Jun 29 2019, 2:18 AM
Aaron Carlisle (Blendify) claimed this task.
Aaron Carlisle (Blendify) added a subscriber: Aaron Carlisle (Blendify).

This task is being closed because the BGE has been removed in Blender 2.8.