Function veloren_world::site2::reseed

fn reseed(rng: &mut impl Rng) -> impl Rng

Seed a new RNG from an old RNG, thereby making the old RNG indepedent of changing use of the new RNG. The practical effect of this is to reduce the extent to which changes to child generation algorithm produce a ‘butterfly effect’ on their parent generators, meaning that generators will be less likely to produce entirely different outcomes if some detail of a generation algorithm changes slightly. This is generally good and makes worldgen code easier to maintain and less liable to breaking changes.