[PlayerStage-Gazebo] Robots that jump around

[Konstantinos D. <da...@fr...>]

Hi,

I've been working with the Terrain model to create some ramps and
platforms and I've noticed that in some cases the robot starts to jump
around when it gets in contact with the terrain (the groundplane is ok).
Specifically it is like in every contact point (wheel) with the terrain
it gets a repulsive force. The funny thing is that using the same world
file and the exact same gzbuilder options but different source GIF
files, I get a terrain that exhibits that behavior and a terrain that
doesn't. As a matter of fact the gzbuilder options don't seem to affect
it because the same GIF file will always result in the same behavior
(either repulsion or no). The terrain.gzb included with gazebo exhibits
that behavior so I would appreciate if anyone could add a robot there
and check if it is ok or not. That way at least I'll know if it is
specific to my distribution.

I'm using a recent gazebo cvs. I tried different versions of the ODE but
nothing changed.

Thanks

dalai

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