21 lines
624 B
JavaScript
21 lines
624 B
JavaScript
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let lastRandom = -1;
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function pRandom(from = 0, to = 2147483647) {
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let thisRandom = Math.floor(map(Math.random(), 0, 1, from, to));
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if (thisRandom == lastRandom) thisRandom = pRandom(from, to);
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return thisRandom;
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}
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function map(input, inputMin, inputMax, outputMin, outputMax) {
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const newv = (input - inputMin) / (inputMax - inputMin) * (outputMax - outputMin) + outputMin;
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if (outputMin < outputMax) return constrain(newv, outputMin, outputMax);
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else return constrain(newv, outputMax, outputMin);
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}
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function constrain(input, low, high) {
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return Math.max(Math.min(input, high), low);
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}
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module.exports = pRandom;
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