Core: log fill progress

[Berserker66]

What is this fixing or adding?

Some alive signals during a long fill step

How was this tested?

with 300 Factorio worlds

If this makes graphical changes, please attach screenshots.

[black-sliver]

Filling the world with 52800 items.

Current fill step at x/16134 items placed.

I feel like this is confusing if you don't know that there are multiple fills gonna happen.
So we should either have a message for each fill step (where the sum always ends up being the total item count), or we should hide it by default (verbose?).

[Berserker66]

I was hoping "current fill step" would indicate there are multiple. Printing for each step is quite verbose, as we have many. I don't like hiding it either. I could add another for remaining_fill, which would almost always at least do it twice, hence making it more obvious there's multiple.

[black-sliver]

So, my two suggestions are either
put it behind level = verbose or
have it announce what it's filling.

[Berserker66]

done

[black-sliver]

I agree with the first 2 suggestions from el-u. For 3-4, I am not sure how it's formatted elsewhere, but preferably it should be consistent. For 5, I think the current naming is as good as the suggested one, as it fills (some) dungeon items into (some) dungeons.

Lgtm otherwise.