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By Design
Votes
0
Found in
2018.3.0b5
Issue ID
1089473
Regression
No
Collision event delayed when using OnCollisionEnter, OnTriggerEnter
Steps to reproduce:
1. Open attached project
2. Open any issued scenes (02IssueCollision3d, 04IssueTrigger3d)
3. Click the Play button and wait for a while, it pauses automatically
4. Press the Step button several times
Expected result: As soon as "Sphere" GameObject collides with "Cube" GameObject Unity should register a collision.
Actual result: As collision happens one frame passes, and only then Unity registers a collision.
Note: Setting "Sphere" Collision detection to "Continous" does not fix the issue.
Reproduced in 2017.4.12f1, 2018.1.9f2, 2018.2.11f1, 2018.3.0b5, 2019.1.0a4
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Resolution Note:
This is by design in PhysX. All the collisions are reported one frame later than they physically occur.