Rigid body Cell Fractured Wall fails to react to a motion capture character #117356

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Thomas Cheng · 2024-01-20T06:22:37+01:00

Thomas Cheng commented

2024-01-20 06:22:37 +01:00

System Information
Operating system: Windows-10-10.0.22631-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 4060 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 546.01

Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: 9be62e85b727
Worked: (newest version of Blender that worked as expected)

Short description of error
[Please fill out a short description of the error here]

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.22631-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 4060 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 546.01 **Blender Version** Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: `9be62e85b727` Worked: (newest version of Blender that worked as expected) **Short description of error** [Please fill out a short description of the error here] **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] [Based on the default startup or an attached .blend file (as simple as possible)]

Thomas Cheng added the

labels 2024-01-20 06:22:38 +01:00

Thomas Cheng commented

2024-01-20 06:27:20 +01:00

https://blender.stackexchange.com/questions/310140/rigid-body-cell-fractured-wall-fails-to-react-to-a-motion-capture-character

I have a "Standard Walk" motion capture file from Mixamo.com. I want the character to walk into a cell fractured wall and activate the rigid body wall when it collides. However, my character does not interact with the wall when "Deactivation and Start Deactivated" is used. Character is set to Passive, Mesh, and deforming. If I try to use "Animated" for the character rigid body, the wall will explode. Very odd and unexpected. Anyone know if I'm doing something wrong? Thanks. File is attached.

I find that if I leave animated off on the character just have deforming mesh, it will interact correction with the cell fractured wall, as long as the wall components are not using "Deactivation" and "Start Deactivated" My guess is that it is a bug since the behaviour is not consistent and unexpected. I do agree scale might be an issue, but not sure how to correct scale while importing into Blender. Thank you.

https://blender.stackexchange.com/questions/310140/rigid-body-cell-fractured-wall-fails-to-react-to-a-motion-capture-character I have a "Standard Walk" motion capture file from Mixamo.com. I want the character to walk into a cell fractured wall and activate the rigid body wall when it collides. However, my character does not interact with the wall when "Deactivation and Start Deactivated" is used. Character is set to Passive, Mesh, and deforming. If I try to use "Animated" for the character rigid body, the wall will explode. Very odd and unexpected. Anyone know if I'm doing something wrong? Thanks. File is attached. I find that if I leave animated off on the character just have deforming mesh, it will interact correction with the cell fractured wall, as long as the wall components are not using "Deactivation" and "Start Deactivated" My guess is that it is a bug since the behaviour is not consistent and unexpected. I do agree scale might be an issue, but not sure how to correct scale while importing into Blender. Thank you.

Mocap-Rigid.blend

8.6 MiB

Thomas Cheng closed this issue

2024-01-20 06:27:22 +01:00

Blender Bot added

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labels 2024-01-20 06:27:24 +01:00

Thomas Cheng reopened this issue

2024-01-20 06:42:51 +01:00

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labels 2024-01-20 06:42:53 +01:00

Pratik Borhade commented

2024-01-22 10:07:17 +01:00

Thanks for the report. Can confirm. Guess this is due to scale difference of armature (also said in the stackexchange post) ? Possibly apply scale and adjusting translation speed along y might fix the problem

Pratik Borhade commented

2024-01-22 10:28:17 +01:00

Looks like rigid body has some issues (#93587 , #100526) when armature modifier is used. I'm short of knowledge here so asking devs for more information.
cc @ZedDB

Looks like rigid body has some issues (#93587 , #100526) when armature modifier is used. I'm short of knowledge here so asking devs for more information. cc @ZedDB

Pratik Borhade added

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Rigid body Cell Fractured Wall fails to react to a motion capture character #117356