The game we're working on every Tuesday at 6pm at http://twitch.tv/jutanium

So I know I am supposed to do seperate PRs for every different feature, but as I've said many times in the past: I am not a programmer. I am bad at programming. So, I have a big PR containing three different features:

1. I have added players.
2. I have added turns.
3. I have added ownership to pieces.
4. I've done some graphical changes to signify whether you own a piece.
5. Maybe other stuff I don't remember.

In regards to 1: When we create initial gameState, I added a function that allows us to create two players, one of which who starts first. This wasn't really thought through, but I assumed there would only ever be two players, even though with this method, you might be able to add more.

In regards to 2: I added this logic to the gameState object. Essentially after someone makes a move, it changes the turn to belong to the other player.

In regards to 3: I reworked some pieces stuff and added ownership so that only the owner of a piece can move that piece.

In regards to 4: I made it so that when you try move a piece (that is eligible to be clicked on), it will either be green or red depending on whether you own it. If you don't own it, you can't move it.

In regards to 5: I made a piece that moves like a knight.

Can't wait to stream :)

Related to #2.

Here's some screenshots at my (poor) attempt at adding icons to help indicate validity of moves/spaces, using SVG pattern defs as fills instead of just colors and opacity.

It's just using an additional rect and text in the pattern as the background/fill. I'm not sure why the text is so bold, it makes it a little hard to distinguish the icons, but I'm sure there's a way to fix that. Or, could use O and X or something instead, for more control.

Bear, valid, color, with icons:

Bear, valid, greyscale, with icons:

King, invalid, color, with icons:

King, invalid, greyscale, with icons:

The colors for indicating valid/invalid spaces to move to (and ownership of pieces) are problematic for colorblind players.

See screenshots of colored and greyscale versions:

Bear, valid, color:

Bear, valid, greyscale:

Knight, valid, color:

Knight, valid, greyscale:

Knight, invalid, color:

Knight, invalid, greyscale:

King, invalid, color:

King, invalid, greyscale: