... physics.^5.1

It was concerns about realistic physics that has delayed progress for weeks.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... structure^8.1

I was not the first discoverer of it, I know.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... elements:^8.2

As of 7 July 2003, this list is subject to change.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... others^10.1

It's a known bug since November 2003, but I don't see signs that anyone plans to fix it.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... distance.^10.2

Cost is measured in calories, of course.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... Thing.^10.3

But it could be. Hmmm...

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... implement.^10.4

Ironically, when I stopped coding over a week ago, it was to read books & articles about physics & how to implement them in a game. So I know how to do it & have sample code. Nevertheless, it's probably best to implement trivial physics for now in the interest of progress.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... second.^10.5

It's pointless to display frames faster than $\frac{1}{30}$ second because your eye can't see it & your monitor probably can't display it. So might as well limit the frame rate to 30 & conserve the CPU cycles for some other computations, even if they are't for the program which has limited its own frame rate.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.