sup39
3a730390ac
- Rewrote with C2 - Implemented a more complex assembler/compiler to support function call - Add options - Invincibility Timer - Pollution Degree - Spin Jump Condition Check
54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
/** @typedef {{index: number, kerning: number, width: number, code: number}} CharInfo */
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import charInfoJP from '../../data/charInfo-JP.json';
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import charInfoEU from '../../data/charInfo-EU.json';
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/**
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* @param {string} version
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*/
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const getFontInfo = (version) =>
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['GMSJ01', 'GMSJ0A'].includes(version)
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? {
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// JP
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charInfo: /**@type{Record<string, CharInfo>}*/ (charInfoJP),
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rowSize: 24, // how many char in a row of the img
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}
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: {
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// EU (TODO US)
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charInfo: /**@type{Record<string, CharInfo>}*/ (charInfoEU),
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rowSize: 16, // how many char in a row of the img
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};
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/**
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* @param {string} text
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* @param {string} version
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*/
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export function measureText(text, version) {
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const { charInfo, rowSize } = getFontInfo(version);
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/** @type {{x: number, y: number, u: number, v: number}[]} */
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const chars = [];
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let x = 0;
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let y = 0;
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let w = 0;
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let useKerning = false;
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text.split('').forEach((c) => {
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const { index, kerning, width } = charInfo[c] ?? charInfo['?'];
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if (c === '\n') {
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useKerning = false;
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x = 0;
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y += 20;
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return;
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}
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if (useKerning) x -= kerning;
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useKerning = true;
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// uv
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const [u, v] = [(index % rowSize) * 20, ((index / rowSize) | 0) * 20];
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chars.push({ x, y, u, v });
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// next
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x += width + kerning;
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// update width
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if (x > w) w = x;
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});
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return { chars, width: w, height: y + 20 };
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}
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