This was inconsistent and had no particular benefits. The only minor
benefit I can see is that it prevents smaller enemies from hiding
inside bigger enemies, and in my test run through Spirit, this only
happened once. Not at all significant compared to how incredibly
awkward the aliens look when they're acting as if they can't move
through other ships.
This commit also includes more function name changes and other minor
style fixes.
I'm going to completely reorganize this absolute mess of a codebase.
First thing is to fix the names so that it's more obvious what files
they're defined in. Second thing is to move around some functions,
and rename some of the cpp and h files, to organize them better.
I'm doing these both at once.
This is silly. I can see that someone decided to restrict targeting
to one ship as a difficulty setting, but that's not a very good way
to achieve different levels of difficulty.
Also added more music and slowed down RE.ogg.