Add a GUI for layered fog

[Peregrine05]

Closes #1479.
Instead of creating a more complicated GUI as shown in the issue, I decided to create a simpler one.

New:

[megamasterbloc]

maybe change layer breath to a more meaningful term like layer dispersion or layer spreading

[Peregrine05]

It is called breadth internally, and it is an accurate term in my opinion.

[Peregrine05]

Should I change the name of the Layer breadth control, or leave it as it is?

[jackjt8]

Should I change the name of the Layer breadth control, or leave it as it is?

The definition of Breadth is "the the distance from one side to another". I haven't looked at the code as to exactly what it's used for but I'm pretty sure Breadth controls the vertical spread of the fog layer. Which.. technically would mean the wrong term is use?

[Peregrine05]

I wonder if Vertical spread would be a suitable replacement.

[leMaik]

How about layer height?

[Peregrine05]

How about layer height?

That would be too easily confused with Layer altitude, I believe.

[Peregrine05]

I changed it to Layer thickness, which should be easily understandable.

[leMaik]

@Peregrine05 Somehow, picking the fog color of any layer changes the color of all layers.

[Peregrine05]

@Peregrine05 Somehow, picking the fog color of any layer changes the color of all layers.

@leMaik This is actually a limitation of the layered fog, and is mentioned in #1428.

[leMaik]

Indeed, it wasn't clear how to blend the layers iirc. Can we make it obvious in the UI that the color affects all layers? Or is it obvious and I'm just blind?

[Peregrine05]

It does not seem obvious to me. Another hint could be useful.

[megamasterbloc]

while it's a limitation of chunky I think that it's perfectly reasonable to only have one color for all fog layers. layered fog is only meant to change the distribution of fog and not it's properties

[Peregrine05]

I have added a new note / hint to the fog GUI.