rigid body model sliding like its on ice? | Bevy | Page 1

hasty bone Jul 28, 2023, 6:55 AM

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I am trying to simulate physics through rapier for the car below, but its sliding out of control, even with no external forces being applied to it.

Friction for both the ground and the wheels of the model are set like so:

Friction { coefficient: (1000.0), combine_rule: (CoefficientCombineRule::Average) },

there is no damping(I assumed friction with the ground would stop sliding?)

but the model is sliding out of control like its on ice. What could I be missing?

west flame Jul 28, 2023, 8:03 AM

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I had a similar issue, where my player sprite would bump an enemy and then start spinning and fly out of the arena like it was Team Rocket blasting off ...

What fixed it for me was inserting Damping

.insert(Damping {
            linear_damping: 15.0,
            angular_damping: 10.0,
        });

https://rapier.rs/docs/user_guides/bevy_plugin/rigid_bodies
I guess there should be something similiar in the 3d rapier plugin?

Rigid-bodies | Rapier

The real-time simulation of rigid-bodies subjected to forces and contacts is the main feature of a physics engine for

hasty bone Jul 28, 2023, 4:19 PM

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west flame I had a similar issue, where my player sprite would bump an enemy and then start...

I've been trying to avoid damping, but even after adding damping it still slides?? The chasis and the wheels are in a solver group stop self-collision, so I know its not that either??

onyx flume Aug 3, 2023, 10:56 AM

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I don't think it will help here but I've had a somewhat similar issue where it helped to subdivide the ground collider (or make it smaller)

#rigid body model sliding like its on ice?