Map generation looks great. It'd be cool if the X wasn't always on the circle, it kind of makes it too easy to locate.
It seems like the X is always on land, which is pretty cool.
thanks for the feedback. I removed some vestigial code and was able to add a randomized amount to the radius and a limit of 3 beacons at once. should make the game much tricker!
Very cool! Now it feels a lot more like triangulating the treasure.