Compound parenting issues with spawned copies of root shape objects. #47297

New Issue

Jacob Merrill · 2016-02-02T02:07:16+01:00

Jacob Merrill commented

2016-02-02 02:07:16 +01:00

Please setup reinstancePhysicsMesh() to provide unique physics shapes to compound parented route objects,

spawning a compound root, and parenting a child to it, and spawning another copy of the root,

when in physics view, you can see the added copy of the root shares the compound collision shape

of the first copy.

a work around currently that works, but I do not understand, is to remove all children from all copies of the root,
add a new root, then reparent all children...... it is however a massive pain.

it appears to be only when adding a copy of a compound route with children.....compoundPhysicsProblem.blend

in the test file the the cube on the left compound parents to a spawned object,

the next spawned copy will have the physics shape of the first copy

unless you press space -> removing the parent from the inital pair -> note the next spawned copies do not have the physics issue.
Nor do they gain them if you parent something, it is only when you spawn a new copy.

https://www.youtube.com/watch?v=Ibbyf6DfQy4&feature=youtu.be

I have been fighting this bug for years.

Please setup reinstancePhysicsMesh() to provide unique physics shapes to compound parented route objects, spawning a compound root, and parenting a child to it, and spawning another copy of the root, when in physics view, you can see the added copy of the root shares the compound collision shape of the first copy. a work around currently that works, but I do not understand, is to remove all children from all copies of the root, add a new root, then reparent all children...... it is however a massive pain. it appears to be only when adding a copy of a compound route with children.....[compoundPhysicsProblem.blend](https://archive.blender.org/developer/F279496/compoundPhysicsProblem.blend) in the test file the the cube on the left compound parents to a spawned object, the next spawned copy will have the physics shape of the first copy unless you press space -> removing the parent from the inital pair -> note the next spawned copies do not have the physics issue. Nor do they gain them if you parent something, it is only when you spawn a new copy. https://www.youtube.com/watch?v=Ibbyf6DfQy4&feature=youtu.be I have been fighting this bug for years.

Jacob Merrill commented

2016-02-02 02:07:16 +01:00

Changed status to: 'Open'

Ulysse Martin was assigned by Jacob Merrill

2016-02-02 02:07:16 +01:00

Jacob Merrill commented

2016-02-02 02:07:16 +01:00

Added subscriber: @JacobMerrill-1

Jacob Merrill commented

2016-02-02 02:09:46 +01:00

or fix add object** I don't care how it gets fixed.

Jacob Merrill commented

2016-02-02 02:38:53 +01:00

https://www.youtube.com/watch?v=rCOHKxEc0UI&feature=youtu.be

maybe just use my work around on your end?

if added object is compound object for all copies of said object in play,

1 remove all children and store in list

2 add new copy

3 reparent all children.

that said, there is no good way to see if a parented object is compound or not at the moment.

https://www.youtube.com/watch?v=rCOHKxEc0UI&feature=youtu.be maybe just use my work around on your end? if added object is compound object for all copies of said object in play, 1 remove all children and store in list 2 add new copy 3 reparent all children. that said, there is no good way to see if a parented object is compound or not at the moment.

Ulysse Martin commented

2016-02-02 07:22:33 +01:00

Added subscriber: @panzergame

Ulysse Martin commented

2016-02-02 07:22:33 +01:00

If I remember correctly and if I understand the problem, @panzergame had a fix for that. So as he has commit rights and as he has a fix, maybe this issue could be adressed to him (if you want to fix that Tristan :) )

Sergey Sharybin commented

2016-02-02 10:11:40 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2016-02-02 10:11:40 +01:00

@panzergame, mind having a look here?

Ulysse Martin commented

2019-03-23 10:25:22 +01:00

Changed status from 'Open' to: 'Archived'

Ulysse Martin closed this issue

2019-03-23 10:25:22 +01:00

Sergey Sharybin commented

2019-04-04 09:55:32 +02:00

@you.le, is a good idea to communicate why exactly task got closed/archived.

Ulysse Martin commented

2019-04-04 11:54:49 +02:00

I closed this bug report as official bge is no longer maintained as far I know. I think this bug has been fixed by panzergame (Tristan Porteries) in some upbge versions, (upbge is a fork of Blender which has been developped since bge development stopped). I wanted to close all the tasks in the tracker where I was involved and related to bge to do some clean up. The bug might still be in blender 2.79, but I don't think it will be fixed

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Compound parenting issues with spawned copies of root shape objects. #47297