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Fixed in 2021.2.X

Fixed in 2020.3.X, 2021.1.X

Votes

1

Found in

2020.2

2020.2.2f1

2021.1

2021.2

Issue ID

1310485

Regression

No

Collision.relativeVelocity always return zero when using ArticulationBody on collision

Physics

-

How to reproduce:
1. Open the attached project's "case_1310485-Project.zip" Scene labeled "SampleScene"
2. Enter the Play Mode
3. Inspect the Console Window

Expected result: "Collision.relativeVelocity" values are populated on the initial collision
Actual result: "Collision.relativeVelocity" values are not populated on the initial collision

Reproducible with: 2020.2.4f1, 2021.1.0b6, 2021.2.0a4
Couldn't test with: 2018.4.31f1, 2019.4.20f1 (ArticulationBody Component is not available)

  1. Resolution Note (fix version 2021.2):

    Fixed in Unity 2021.2.0a11 and above

  2. Resolution Note (fix version 2021.1):

    Fixed in Unity 2021.1.2f1

  3. Resolution Note (fix version 2020.3):

    Fixed in Unity 2020.3.5f1

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