Make it possible to remove a resource from the ECS and get full ownership of it

[yusdacra]

It should be possible to remove a resource from the ECS and get full ownership of it.

[Telzhaak]

Just out of interest,

what would that be useful for?
Why was it a resource if you plan on taking ownership of it? Does a copy/clone of the information not suffice?

[yusdacra]

Just out of interest,

what would that be useful for?
Why was it a resource if you plan on taking ownership of it? Does a copy/clone of the information not suffice?

I first wanted it so that I could remove a resource a plugin added so that I could add it to my own (related) resource, but figured out I didn't really need to do that. I can't think of any use-case that isn't already solved by other solutions, to be honest.

[chemicstry]

Even though there may not be use cases for this now, I think this must be supported by the API. Currently resources are insert only with no way to remove them.

One such use case would be a custom rendering system that is inserted into resource and later you would like to move it somewhere else without destroying window.

[MichaelHills]

Would loading different maps with different game modes be another example?

[alice-i-cecile]

#1478 creates an API for this, but doesn't allow you to hand it off. I think that's worth implementing still.

[cart]

Close by #1525, via world.remove_resource()