Did you ever need to sample from a Dirichlet distribution in Actionscript 3.0? What about computing a value of the Gamma function? Probably not In case you did, I wrote a class with a few math methods: a function to sample from multinomial distributions; this is useful if you need to choose randomly from a [...]

I wrote a simple game to learn how to store on and retrieve data from a server-side database. The rules are simple: you have to guess 2/3 of the average of the guesses of all the players. So, for example, if you think that the other players guessed on average 100, your guess should be [...]

Here’s another classic from the 80′s: an artificial life simulation, where bugs move on a virtual Petri dish, hunting for bacteria. If they manage to survive until adulthood, and accumulate enough energy from bacteria, the bugs reproduce and generate two copies of themselves. In the reproduction process, the genetic code undergoes small mutations, so that [...]

In games and other graphical applications one has to keep track multiple sprites and detect collisions between them. A naif approach would loop over all sprites and check for collision with *every other sprite*. This is, of course, terribly inefficient and can be very slow even for a small number of sprites. One way out [...]

I decided to get my feet wet with Flash + ActionScript programming with a classic of the 80′s: 2-dimensional Cellular Automata! A 2D CA is a grid of cells, each of which can be in either an “alive” or “dead” state. The state of each cell evolves in time, according to simple update rules based [...]