Calculation of acceleration

[kidice]

getDeltaLinearVelocity() is a bullet internal method used in the constraint solver. You have to calculate the acceleration yourself from current and previous velocity.
new_velocity = body->getLinearVelocity();
acceleration = (new_velocity - old_velocity) / dt;
old_velocity = new_velocity;

hi nan!
thank you! that piece of code worked for me. I think, I have to get more familiar with bullet