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Highscores for XNA 4.0 test release

I've heard the requests, and decided that they are right: It's better to release something that probably works for Xbox for XNA 4.0 now, and then follow up with the Phone version later.

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The state of COLLADA, FBX, and open source

Here's what I want to do:

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Lead Game Tester: 60 dollars a year?

I recently saw this ad:

A whole 60 dollars a year? That's cheaper than outsourcing to Congo! (the poorest nation on Earth).

Job recruiting scam pro-tip: Proofread your ads!

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FFT in XNA Content Pipeline for Beat Detection For The Win!

I worked a bit more on the FFT-based music visualizer program I started the other day, and it's doing great! A this point, I have a pretty solid rhythm extraction thing going, and I can use autocorrelation (through autoconvolution) of the extracted rhythm track to derive tempo. I'm assuming 4/4 beats here, but...

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What can I do with music, really? FFT and the XNA content pipeline

I was unhappy with the low resolution of the visualization data that you get out of the XNA framework MediaPlayer. If you want to synchronize gameplay to music, the data you get is not sufficient.

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A very large number

Here's a number. Anyone care to guess what it is?


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Range queries in key/value stores, part two

In my previous blog entry, I talked about cross-shard transactional integrity for key/value stores, and how SQL databases have solved this problem. I also poked fun at some of the best known key/value stores for not quite solving all of my problems for me, for free. Go read it, it's fun times!

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Cross-shard transactional integrity

I've been looking at NoSQL data stores for online transaction processing lately. Yes, related to work :-)

The basic model of a key/value store, where the value is a JSON object or similar, only gets you so far. The bonus with it is that it is very, very easy to horizontally partition ("shard" or "federate"). The draw-back is that you really can't do any online queries on anything other than primary key values. If you're trying to do a query on, say, "any foobar created between 2011-01-05 and 211-01-06" then you're screwed -- you have to traverse the entire data store to find that.

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Node.js Mersenne Twister random number generator module

I made a Node.js module. It's a packaging and slight update of the JavaScript implementation of the Mersenne Twister random number generator (which is a really high quality generator, as well as pretty fast).

I'm hoping you can soon get it with npm:

$ npm install mersenne

Usage is simple:

r = require('mersenne');

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Things that are broken in California -- a k a "If I were Governor..."

There are a bunch of things that are systemically broken in California, and the state would do a lot better if these could be fixed. The problem is, the far left and far right aren't much in agreement about how to fix it, or even what it is that is broken.

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