23 lines
668 B
TypeScript
23 lines
668 B
TypeScript
// https://stackoverflow.com/questions/521295/seeding-the-random-number-generator-in-javascript, Mulberry32
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export abstract class Random {
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private static _seed = 42;
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public static set seed(value: number) {
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Random._seed = value;
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}
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public static getRandomInt(): number {
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let t = (Random._seed += 0x6d2b79f5);
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t = Math.imul(t ^ (t >>> 15), t | 1);
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t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
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return (t ^ (t >>> 14)) >>> 0;
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}
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public static getRandom(): number {
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return Random.getRandomInt() / 4294967296;
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}
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public static randomBetween(from: number, to: number): number {
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return from + Random.getRandom() * (to - from);
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}
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}
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