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Make legacy the default

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This commit is contained in:
Aria 2025-12-13 17:28:42 -06:00
parent 17af92b2df
commit 4a7344595d
5 changed files with 926 additions and 912 deletions
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10
packages/core/bench/signal.bench.mjs
View file

@ -1,6 +1,6 @@
import { describe, bench } from 'vitest';
import { calculateSteps, rand, useOldRandom } from '../index.mjs';
import { calculateSteps, rand, useRNG } from '../index.mjs';
const testingResolution = 128;
@ -11,13 +11,13 @@ describe('old random', () => {
bench(
'+tactus',
() => {
useOldRandom();
useRNG('legacy');
_generateRandomPattern();
},
{
time: 1000,
teardown() {
useOldRandom(false);
useRNG('legacy');
},
},
);
@ -26,13 +26,13 @@ describe('old random', () => {
bench(
'-tactus',
() => {
useOldRandom();
useRNG('precise');
_generateRandomPattern();
},
{
time: 1000,
teardown() {
useOldRandom(false);
useRNG('legacy');
},
},
);

19
packages/core/signal.mjs
View file

@ -231,7 +231,8 @@ const timeToRands = (t, n, seed = 0) => {
return out;
};
// Deprecated: Old random signals. Configuration `useOldRandom` may be used for legacy songs
// Old random signals. Currently the default, but can also be chosen via
// `useRNG('legacy')`
// stretch 300 cycles over the range of [0,2**29 == 536870912) then apply the xorshift algorithm
const __xorwise = (x) => {
@ -257,23 +258,25 @@ const __timeToRands = (t, n) => __timeToRandsPrime(__timeToIntSeed(t), n);
// End old random
let useOldRandomBool = false;
let RNG_MODE = 'legacy';
export const getRandsAtTime = (t, n = 1, seed = 0) => {
return useOldRandomBool ? __timeToRands(t + seed, n) : timeToRands(t, n, seed);
return RNG_MODE === 'legacy' ? __timeToRands(t + seed, n) : timeToRands(t, n, seed);
};
/**
* Whether to use the old random number generator or not. Can be used to support legacy projects
* Sets which random number generator to use. Historically Strudel would
* use `useRNG('legacy')`, which remains the default. To use a new more statistically
* precise RNG, try `useRNG('precise')`.
*
* @name useOldRandom
* @param {boolean} b - Whether to use old RNG
* @name useRNG
* @param {string} mod - Mode. One of 'legacy', 'precise'
* @example
* useOldRandom(true)
* useRNG('legacy')
* // Repeats every 300 cycles
* $: n(irand(50)).seg(16).scale("C:minor").ribbon(88, 32)
* $: n(irand(50)).seg(16).scale("C:minor").ribbon(388, 32)
*/
export const useOldRandom = (b = true) => (useOldRandomBool = b);
export const useRNG = (mode = 'legacy') => (RNG_MODE = mode);
/**
* A discrete pattern of numbers from 0 to n-1