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JadenGeller/DeterministicRandomNumberGenerator.swift

Created November 11, 2023 20:25
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uses GameplayKit GKMersenneTwisterRandomSource
Raw
DeterministicRandomNumberGenerator.swift
import GameplayKit
struct DeterministicRandomNumberGenerator: RandomNumberGenerator {
private let randomSource: GKMersenneTwisterRandomSource
init(seed: UInt64) {
randomSource = GKMersenneTwisterRandomSource(seed: seed)
}
mutating func next() -> UInt64 {
let upperBits = UInt64(UInt32(bitPattern: Int32(randomSource.nextInt()))) << 32
let lowerBits = UInt64(UInt32(bitPattern: Int32(randomSource.nextInt())))
return upperBits | lowerBits
}
}
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