37 lines
1.1 KiB
TypeScript
37 lines
1.1 KiB
TypeScript
const BASE = 10000;
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const GROWTH = 2500;
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const HALF_GROWTH = 0.5 * GROWTH;
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const REVERSE_PQ_PREFIX = -(BASE - 0.5 * GROWTH) / GROWTH;
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const REVERSE_CONST = REVERSE_PQ_PREFIX * REVERSE_PQ_PREFIX;
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const GROWTH_DIVIDES_2 = 2 / GROWTH;
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export function getLevel(exp: number) {
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return exp <= 1 ? 1 : Math.floor(1 + REVERSE_PQ_PREFIX + Math.sqrt(REVERSE_CONST + GROWTH_DIVIDES_2 * exp));
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}
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export function getExactLevel(exp: number) {
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return getLevel(exp) + getPercentageToNextLevel(exp);
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}
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// function getExpFromLevelToNext(level: number) {
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// return level < 1 ? BASE : GROWTH * (level - 1) + BASE;
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// }
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function getTotalExpToLevel(level: number) {
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const lv = Math.floor(level); const
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x0 = getTotalExpToFullLevel(lv);
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if (level === lv) return x0;
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return (getTotalExpToFullLevel(lv + 1) - x0) * (level % 1) + x0;
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}
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function getTotalExpToFullLevel(level: number) {
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return (HALF_GROWTH * (level - 2) + BASE) * (level - 1);
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}
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function getPercentageToNextLevel(exp: number) {
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const lv = getLevel(exp);
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const x0 = getTotalExpToLevel(lv);
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return (exp - x0) / (getTotalExpToLevel(lv + 1) - x0);
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} |