Hi John,
Thanks for the quick reply.  It dawned on me (light dawns on marble
head) as I was writing my question that was probably expected
behavior.

And now for my next question.... but I'll start another thread for that.
--wpd


On Mon, Sep 20, 2010 at 5:45 PM, John Hsu <johnhsu@willowgarage.com> wrote:
> Hi wpd,
> Yes, that's the expected behavior, without the physics engine the robot
> mechanism controllers torque commands along with all other dynamic effects
> are simply ignored.
> John
>
> On Sep 20, 2010 2:12 PM, "Patrick Doyle" <wpdster@gmail.com> wrote:
>
> Apologies if this is a FAQ, I didn't see any references to "disabled"
> and "physics" in the mailing list archive.
>
> I just started gazebo with physics disabled by virtue of copying the
> empty_worlds.launch and adding -p to the arguments.  Then I started
> the pr2 simulator (roslaunch pr2_gazebo pr2.launch) and pr2_teleop.
> When I do that and try to drive the robot around, it doesn't move.
>
> Is this expected behavior or am I missing something.
>
> It would not be terribly surprising to me to learn that if the laws of
> physics were all repealed we wouldn't be able to get anywhere :-)
>
> --wpd
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