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In Progress

In Progress in 2022.3.X

Votes

1

Found in

2021.3.33f1

2022.3.15f1

2023.2.4f1

2023.3.0a18

Issue ID

UUM-58482

Regression

Yes

Sweep-based CCD behaviour changed for some fast-moving objects (ccd threshold minimization)

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How to reproduce:
1. Open the “Repro” project
2. Open the “SampleScene”
3. Enter the Play Mode
4. Observe the Console

Expected result: The Console shows consistent results of max height being 16.93414
Actual result: The max height results are dependent on versions

Reproducible in: 2021.3.30f1, 2021.3.33f1, 2022.3.8f1, 2022.3.15f1, 2023.2.4f1, 2023.3.0a18
Not reproducible in: 2021.3.29f1, 2022.3.7f1

Reproduced on: Windows 10
Not reproduced on: No other environments tested

Note:
- The max height is 16.44284 in 2021.3.X and 2022.3.X reproducible versions
- 2023.X.X presents different results than expected but not the same as in the 2022.3.33f1 and 2022.3.15f1 version
- The differences in the applied velocity might be related to the fixes done in this issue: [https://issuetracker.unity3d.com/issues/objects-are-not-colliding-when-time-dot-fixeddeltatime-is-smaller-or-equal-to-5-ms]

Comments (1)

  1. creat327

    Dec 09, 2023 10:08

    What has Unity done with physics? it was fine and they just broke it in-between versions

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