Real-Time Physics Simulation Forum 2025-05-28T03:58:40+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/655 2025-05-28T03:58:40+00:00 2025-05-28T03:58:40+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=44521#p44521 <![CDATA[Re: m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?]]>
You should not set the linear velocity for static objects. Only dynamic and/or kinematic objects can ever move.
Thanks,
Erwin
I have a question. What is the meaning of setting velocity on a kinematic body? The world will not move this body, only user code, correct?

Thanks,
Morgan

Statistics: Posted by goosesensor — Wed May 28, 2025 3:58 am

]]> 2006-11-01T19:30:32+00:00 2006-11-01T19:30:32+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=2307#p2307 <![CDATA[Re: m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?]]>
Probably it should be !(m_collisionFlags & btCollisionObject::CF_STATIC_OBJECT) instead of m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT. No?
Definately. I'll change it in the more readable 'isStaticObject()', which is the same.

Thanks Jack,
Erwin

Statistics: Posted by Erwin Coumans — Wed Nov 01, 2006 7:30 pm

]]> 2006-11-01T19:04:46+00:00 2006-11-01T19:04:46+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=2306#p2306 <![CDATA[Re: m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?]]>
OK - I give up - what is this assert telling me?

../bullet/src/BulletDynamics/Dynamics/btRigidBody.h:199: void btRigidBody::setLinearVelocity(const btVector3&): Assertion `m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT' failed.
You should not set the linear velocity for static objects. Only dynamic and/or kinematic objects can ever move. Do you have a full callstack which system is trying to set the linear velocity? It might be a bug,
Thanks,
Erwin
Probably it should be !(m_collisionFlags & btCollisionObject::CF_STATIC_OBJECT) instead of m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT. No?

Statistics: Posted by Jack — Wed Nov 01, 2006 7:04 pm

]]> 2006-11-01T14:56:46+00:00 2006-11-01T14:56:46+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=2305#p2305 <![CDATA[Re: m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?]]>
OK - I give up - what is this assert telling me?

../bullet/src/BulletDynamics/Dynamics/btRigidBody.h:199: void btRigidBody::setLinearVelocity(const btVector3&): Assertion `m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT' failed.
You should not set the linear velocity for static objects. Only dynamic and/or kinematic objects can ever move. Do you have a full callstack which system is trying to set the linear velocity? It might be a bug,
Thanks,
Erwin

Statistics: Posted by Erwin Coumans — Wed Nov 01, 2006 2:56 pm

]]> 2006-11-01T04:34:48+00:00 2006-11-01T04:34:48+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=2298#p2298 <![CDATA[m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT ?!?]]>
../bullet/src/BulletDynamics/Dynamics/btRigidBody.h:199: void btRigidBody::setLinearVelocity(const btVector3&): Assertion `m_collisionFlags !=btCollisionObject::CF_STATIC_OBJECT' failed.

Statistics: Posted by SteveBaker — Wed Nov 01, 2006 4:34 am

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