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Forkable random number generator for visual effects
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export default function random(seed) { | |
let state = seed; | |
const next = () => { | |
state |= 0; | |
state = (state + 0x6d2b79f5) | 0; | |
var t = Math.imul(state ^ (state >>> 15), 1 | state); | |
t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t; | |
return ((t ^ (t >>> 14)) >>> 0) / 4294967296; | |
}; | |
return { | |
next, | |
nextBetween: (from, to) => next() * (to - from) + from, | |
fork: () => random(next() * 2 ** 32), | |
}; | |
} |
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I have no idea, I just took it from https://github.com/bryc/code/blob/master/jshash/PRNGs.md 😄