After collision car greatly jumps [ video ]

[FDsagizi]

Hi!

Set body->setRestitution( 0 ); but sometimes it jumps

http://youtu.be/6P-_7knBRdY

What should I do to stop it jumping?

PS. Sorry for my English

[Erwin Coumans]

It looks like the car is colliding against internal triangle edges. You can filter out the wrong collision normals, for example using the btInternalEdgeUtility.
See Bullet/Demos/InternalEdgeDemo.

Also it can help to enable 'split impulse'

Code: Select all

world->getSolverInfo().m_splitImpulse=true;

Also, set the restitution of the car chasses to zero, and make sure to use the latest Bullet version.
Hope that helps,
Erwin

[FDsagizi]

It looks like the car is colliding against internal triangle edges. You can filter out the wrong collision normals, for example using the btInternalEdgeUtility.
See Bullet/Demos/InternalEdgeDemo.

Also it can help to enable 'split impulse'

Code: Select all

world->getSolverInfo().m_splitImpulse=true;

Also, set the restitution of the car chasses to zero, and make sure to use the latest Bullet version.
Hope that helps,
Erwin

Bullet version 2.81 - rev2613

look exemple btInternalEdgeUtility, and i dont undersnad why is need ? Enable or disabe visual no changes

next

i add this code for my gContactAddedCallback

Code: Select all

btAdjustInternalEdgeContacts(cp,colObj1Wrap,colObj0Wrap, partId1,index1);

no changes ... I use CF_CUSTOM_MATERIAL_CALLBACK

next

add

Code: Select all

world->getSolverInfo().m_splitImpulse=true;

no visual changes

Also, set the restitution of the car chasses to zero

All problem not in wheels, and in that that at lateral blows the car strongly pushes away. Here video without wheels

http://youtu.be/JIz7xXNBQzs