Is there any way to exclude certain objects from being outlined while the rest are?

you can use 'drawOutline' only on desired objects

Now when would I call that, if, say, I wanted all my Statics to have an outline? I tried putting in

FREPA(Statics)
{
Statics[i].drawOutline();
}

within Draw() and Update(), but it didn't work.

there's tutorial for drawOutline, you need to extend Obj::drawOutline, call there Mesh::drawoutline
and inside drawPrepare return the bit for RM_OUTLINE to request the mode
check comments on methods

All right, got the outline to show, now, is there a way to get it to draw black? It seems to treat black as transparent.

EDIT: Worked around by using a really dark grey.

are you setting alpha to 1.0 or 255?

As 255.

Also, is there a way to make the outline thicker? 1px is hard to see

I've checked the issue and fixed it, black will work in next release
but for thicker outline - I won't be working on this anytime soon

Just started using drawOutline() yesterday and I have to agree that 1px is too small. It would be nice if the line was a little bit thicker, like 3px, with anti-aliasing as well. Just wanted to show support for this issue.

how about maybe adding some properties to the highlight function?
Maybe that it could change the materials settings or something.

Not that it would exactly help with the outlining but.. yeah..