Movement code

void FixedUpdate()
{
	rigidbody.velocity -= new Vector3(velocityLastFrame.x, 0f, velocityLastFrame.z);

	rigidbody.AddForce(new Vector3(dir.x, 0f, dir.z));
	rigidbody.AddForce(new Vector3(strafeDir.x, 0f, strafeDir.z));

	Vector3 velocityLastFrame = rigidbody.velocity;
}