Randomized metroidvania 01: map rooms

So I've decided to make a randomized metroidvania game; sort of a cross between a roguelike and one of the greatest games ever, Castlevania: Symphony Of The Night. Since I want this to be a flash game, I'll use Eclipse and Flixel.

I spent a few hours getting Eclipse to work with Actionscript and playing with Flixel a bit. For my game I decided to start with generating a random world map.




Here's the basic algorithm, which took less time than setting up Eclipse and Actionscript:

to start:
    add a 1x1 "frontier" space
    add a room

to add a room:
    randomly pick a frontier space
    start a room there
    randomly grow it for a while
    remove frontiers under it
    add its empty neighboring cells to the list of frontiers