49 lines
1.3 KiB
JavaScript
49 lines
1.3 KiB
JavaScript
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const Bubbles = (() => {
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"use strict";
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const SCALES = [1, 0.8, 0.65];
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const SMALLEST = 0.5;
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const PACE = 180;
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const SHORTEST = 1.5;
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function scale(position) {
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return SCALES[position] ?? SMALLEST;
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}
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function words(text) {
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return String(text || "").split(/\s+/).filter(Boolean);
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}
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function reading(count) {
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return Math.max(SHORTEST, (count * 60) / PACE);
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}
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function reveals(count, duration) {
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return Array.from({length: count}, (_, index) => (index / count) * duration);
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}
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function shown(count, duration, elapsed) {
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return reveals(count, duration).filter((at) => at <= elapsed).length;
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}
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function picked(row, speech) {
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return row.class === "mayday" || speech.classes.includes(row.class);
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}
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function plan(head, pending) {
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const queue = head ? [head, ...pending] : pending;
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const shift = head ? 0 : 1;
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const seen = new Set();
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return queue.flatMap((item, index) => {
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if (seen.has(item.who)) {
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return [];
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}
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seen.add(item.who);
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return [{who: item.who, item, scale: scale(index + shift)}];
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});
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}
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return {SCALES, SMALLEST, PACE, SHORTEST, scale, words, reading, reveals, shown, picked, plan};
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})();
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if (typeof module === "object" && module.exports) {
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module.exports = Bubbles;
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}
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