Search Issue Tracker
By Design
Votes
0
Found in
2020.3
2020.3.25f1
2021.3
2022.1
2022.2
Issue ID
1425816
Regression
No
Articulation Body colliders intersect without colliding when using non-fixed articulation
How to reproduce:
1. Open the user's attached project
2. Open scene Test Scene
3. Press the Play button and observe the three TestSetup GameObjects
Expected result: all three TestSetup GameObjects show colliding cubes without intersection
Actual result: "TestSetup - NonFixed Articulation" cubes intersect with each other without colliding
Reproducible with: 2020.3.34f1, 2021.3.3f1, 2022.1.1f1, 2022.2.0a14
Could not test with: 2019.4.39f1 (Articulation Body not available)
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- SerializedPropertyChangeEvent is invoked when initially binding PropertyFields in custom Editor
- UI Panel is not visible when HDR and STP filter are enabled
- Crash on GfxDeviceD3D11Base::DrawBuffersIndirect when opening a specific project
- OnTriggerExit2D is called in Play mode when undoing component adding
- Builds fail with "Execution failed for task ':launcher:checkReleaseDuplicateClasses'" error when the newer version of the In-App Purchasing package is installed on a specific project
Resolution Note:
In the provided project, the cube that "falls through" actually gets forced through the other collider by its own ArticulationDrive settings. (The Damping is set to a large value and Target Velocity is set to 2) This ends up forcing the collider to reach some velocity, overriding the pushback it gets from intersecting the other collider. You can witness this by opening the Physics Debugger on the latest Unity version and entering play mode step by step. When the bodies intersect you can see the pushback visualized in pink arrow gizmos. If you set Damping to 0, the cubes will collide and the top one will not fall through.