Nate Koenig

@ahcorde see #1669 as an alternative that doesn't need the restart feature.

The opt-out idea is meant to make the default behavior do the right thing, and thereby improve the user experience. The trade off would be a more difficult time for...

Would it be possible to prioritize a resolution for this bug? There are many models on Fuel that cause Gazebo to hang if they are included.

Thanks for the PR. I've updated this and targeted to version 6 in #1750.

Is the light visualization logic in ign-gui or ign-gazebo now? My reasons for off-by-default are: 1. The light visuals are a debug tool, which doesn't seem like it should appear...

> Are there any plans to integrate this into Fortress? How can I help you? Yes, this PR is near the top of my review plate. Feel free to try...

It would be nice to revisit the topic of storing components in contiguous memory, that was one of the big motivations for moving to ECS. If using messages would block...

I improved the stream extraction operator, and added more tests. See [135e251](https://github.com/gazebosim/sdformat/pull/1021/commits/135e25115636d94385a1307a411d82daf471871c)

> `WorldByName` is not defined, is there any other related PR ? Here it is: https://github.com/gazebosim/sdformat/pull/1121

> When I restart the simulation some models disappear (even if it's not a fuel model) > >  [  ](https://user-images.githubusercontent.com/1933907/187023007-57048dbe-2450-4031-ad96-c364ba218578.gif) [ ](https://user-images.githubusercontent.com/1933907/187023007-57048dbe-2450-4031-ad96-c364ba218578.gif) Does this still happen to you?...