Blend the radius searched for stars based on desired density.

[fluffyfreak]

Limit the radius searched for stars and mix it from the minimum to the desired radius depending on the star density.

Fixes #4990

[fluffyfreak]

Also @Web-eWorks I keep being really impressed by how good the Ctrl+i debug/performance display is!

[impaktor]

If one sets to 0 background stars, will one still get the "real" stars then?

[fluffyfreak]

The minimum was set to 50,000 stars, so it'll work like this:

• Minimum real stars min radius = 8 light years
• Target maximum radius for stars is set in ini file to ~220 light years
• "0" stars is actualy equal to a multiplier of 0.01 (this hasn't changed).
• So you'll get all real stars within a lerp of 8.0 to 220 by 0.01 amount = 10.12 light years.
• After that it'll add in fake stars until it reaches the target number of background stars which will be = 54,500 due to also lerping by 0.01 between 50,000 and 500,000

I suppose that the min/max range could now be changed to 0.0 instead of 0.01

[fluffyfreak]

@impaktor and now I've changed the lerp/mix range to 0.0 to 1.0 👍

[Web-eWorks]

Looks nice and clean as always! Haven't had a chance to test it, but it's minimal enough I don't think there will be any bugs to find.