Monday, May 12th, 2008
Live Chess with Comet
Piotr Dachtera took his 64pola.pl, and created a scalable version using Comet. Dylan reports it as “a Jetty-powered Comet app that uses dojox.cometd on the client-side. It’s a solid implementation that shows chess moves in real-time, and to date is the best all-around Comet game I’ve seen that is live to the world.”
Mathieu Nouzareth then commented that Cafe.com, a Flash based gaming platform also uses Jetty and Comet techniques (compared to AMF etc).
4.8 rating from 17 votes
There is also the GWT comet games GPokr, KDice, and XSketch, GPokr in particular was done a long time ago.
Crashes Firefox 2.
Upon entering the game after clicking “PLAY LIVE!”, it opens up a new window and crashes my browser (Firefox 2.0.0.14). You can easily reproduce this bug if you’re on Mac OS X + Firefox 2 + Firebug. If you disable Firebug, then you can enter the game. I found that this is a bug on Dojo’s part. There is code in their 1.0+ release that Mac OS X Firebug doesn’t like and it crashes the browser.
So I opened it up in Webkit revision 33029, and the games don’t even work. Nothing moves, no data is being pushed to the client-side. You can easily find out by opening up Charles (http debugging proxy).
Epic fail.
It’s a pretty nice one!
Something like this is simple compared to what I did with Ajax and Server Sent DOM Events in Opera 9 - a scorched earth clone with online play, and that was back in January 2007, so I would dare to say it was a world first in JavaScript based games with online multiplay. Prove me wrong if you can =)
Here is a tutorial getting GWT to work with Grizzly Comet GWT + GRIZZLY + COMET
Where I can download thic “Live chess”?