Basically, the normal random() function in JS doesn't let you specify a seed, which is a problem if you want predictability in your randomness (little bit oxymoronic).
The main use I thought of for this is with world generation. Makes it a lot more efficient to save generated worlds, as you only have to save the seed and anything that the player has changed and you can just generate the rest on the fly.
The plugin can be found here:
A little example can be seen here:
The capx for that is here:
Can anyone tell me why I'm getting that '0' at the beginning?