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+--- Thread: Help Off-center collider issue (/thread-2063.html)
Off-center collider issue - Elastic Sea - 23-02-2020
I have a game where I connect groups of blocks with ropes, each group is a rigidbody and each block in the group is a collider.
When the blocks collider or the block itself is a little bit off-center (even though their center of mass is in the same place) they start to move erratically and rotate a lot. I don't know how to mitigate the issue.
Quick gif demonstrating the issue here: https://imgur.com/a/CEfeyNY
I have also created a small sample project with the issue here: https://drive.google.com/file/d/1O44VJ7vlB4BqrauML88P6n-U_1OJI4W7/view?usp=sharing
Thanks a lot.
RE: Off-center collider issue - josemendez - 24-02-2020
(23-02-2020, 03:07 AM)Elastic Sea Wrote: I have a game where I connect groups of blocks with ropes, each group is a rigidbody and each block in the group is a collider.
When the blocks collider or the block itself is a little bit off-center (even though their center of mass is in the same place) they start to move erratically and rotate a lot. I don't know how to mitigate the issue.
Quick gif demonstrating the issue here: https://imgur.com/a/CEfeyNY
I have also created a small sample project with the issue here: https://drive.google.com/file/d/1O44VJ7vlB4BqrauML88P6n-U_1OJI4W7/view?usp=sharing
Thanks a lot.
Hi!
Thanks for reporting this! There seems to be a bug in the application of inertia tensor rotation. For the time being, there's an easy fix that while no 100% accurate, results in acceptable dynamics in most cases. In Oni.cs, change line 245:
Code:
inertiaTensor = kinematic ? Vector3.zero : source.inertiaTensorRotation * invTensor;to
Code:
inertiaTensor = kinematic ? Vector3.zero : invTensor;that should fix it. A proper fix will be added in the next update.
RE: Off-center collider issue - Elastic Sea - 25-02-2020
It works much better, thank you.