Fix possible bug

I was seeing fps go from 60 to 120 after clicking,
suggesting double-scheduling.

Resume scheduling on interaction

Untested. #GreatCommitMessagesOfOurTimes

Go faster by clipping to `deadColor`

We were continuing to increment all ever-alive cells (about 9,000 for the
default seed) even once they had completely faded beyond `deadColor` (white).
Now we stop once we hit `deadColor`, which means we paint fewer cells, and we
also stop eventually if the simulation reaches a single state steady state.

Prefer strict equality

Instead of click to paint, click and drag

Suppress unwanted selectability

Add ability to click on canvas to spawn new cells

Use requestAnimationFrame instead of setTimeout

Ends up being smoother.

Use modulo for terseness in wrapping calculation

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Use strict

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add fps indicator

Updated every half-second, approximately.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Apply minor indentation fix

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Move location of center cell check

For better readability, get this out the way at the top of the loop.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add license and simple README

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Make interval configurable

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add UI for controlling seed

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add basic control buttons

Some janky hand-coded event handlers here, but they get the job done.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add actual seeding

Courtesy of seedrandom.js. Not exposed in the UI yet, so always runs the
same game.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add comments for clarity

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Tweak dying delta, for prettiness

Signed-off-by: Wincent Colaiuta <win@wincent.com>

First cut at fading out dying cells

Signed-off-by: Wincent Colaiuta <win@wincent.com>

On hitting edges, wrap around

This is really supposed to happen on an infinite grid. Instead of
pretending that off-grid cells are all dead, wrap around at the edges.

This is a little more complicated, and still not strictly kosher, but
it does avoid some anomalous behaviors at the edges.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Fix seeding

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Switch to 2D array

This makes a lot of the grid access simpler, at the cost of making
initial seeding harder. The pay-off seems worth it, as the simpler logic
will likely reduce bugs (in fact, I think the symmetry bug that I was
seeing before is gone now; although there is a new bug in its place,
which shows the initial state of the grid being initialized not quite as
randomly as I would hope).

Signed-off-by: Wincent Colaiuta <win@wincent.com>

Add multiplier

To make it easier to actually see what's going on.

Signed-off-by: Wincent Colaiuta <win@wincent.com>

First dumb cut at Conway's Game of Life

No seed support yet (would require a custom random number generator).

Signed-off-by: Wincent Colaiuta <win@wincent.com>