Hi Carlo,
Are multiple pointmass3d engines officially supported in ARGoS? The docs ("argos3 -q pointmass3d") don't say one way or the other. I found out from Michael that multiple dynamics3d engines are not supported, and so I've switched to trying to use the pointmass3d engine instead, which actually is somewhat better, because I can still use the foot-bot I've done all my work with up to this point, though it does not have a bunch of the neat features that dynamics3d has (gravity, magnetism, etc.).
I've been able to run with multiple pointmass3d engines, and ARGoS has not through any errors, but I have not not large scale runs and looked extensively at the results. I can open a pull request with the updated docs either way to make it clear for other ARGoS users what the ground truth is.
Thanks!