刘宇飞
d393302388
Adds level prefabs, theme assets, audio, extensions, and deployment scripts for the Unity WebGL migration. Co-authored-by: Cursor <cursoragent@cursor.com>
107 lines
3.6 KiB
JavaScript
107 lines
3.6 KiB
JavaScript
/**
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* 打包优化：关卡库压缩、settings 预加载策略、体积报告。
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* 供 package-for-project.js / package-for-cdn.js 共用。
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*/
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const fs = require('fs');
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const path = require('path');
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const zlib = require('zlib');
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function formatBytes(n) {
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if (n >= 1024 * 1024) return `${(n / 1024 / 1024).toFixed(1)} MB`;
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if (n >= 1024) return `${(n / 1024).toFixed(1)} KB`;
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return `${n} B`;
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}
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function dirSize(root) {
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if (!fs.existsSync(root)) return 0;
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let total = 0;
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for (const ent of fs.readdirSync(root, { withFileTypes: true })) {
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const p = path.join(root, ent.name);
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if (ent.isDirectory()) total += dirSize(p);
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else total += fs.statSync(p).size;
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}
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return total;
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}
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function fileSize(p) {
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return fs.existsSync(p) ? fs.statSync(p).size : 0;
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}
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/** 压缩关卡库 JSON（去掉空白，不改变语义） */
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function minifyLevelsDatabase(srcPath, dstPath) {
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const raw = fs.readFileSync(srcPath, 'utf8');
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const data = JSON.parse(raw);
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const compact = JSON.stringify(data);
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fs.writeFileSync(dstPath, compact, 'utf8');
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return { before: Buffer.byteLength(raw, 'utf8'), after: Buffer.byteLength(compact, 'utf8') };
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}
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/** 可选：生成 .br 供静态服务器直接返回 */
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function brotliCompressFile(srcPath, dstPath, quality = 9) {
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const input = fs.readFileSync(srcPath);
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const out = zlib.brotliCompressSync(input, {
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params: { [zlib.constants.BROTLI_PARAM_QUALITY]: quality },
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});
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fs.writeFileSync(dstPath, out);
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return { raw: input.length, br: out.length };
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}
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/**
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* 调整预加载 bundle：默认只预加载 main，resources / level-prefabs 按需加载。
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* @param {object} opts
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* @param {boolean} [opts.preloadResources=false]
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* @param {boolean} [opts.preloadLevelPrefabs=false]
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*/
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function patchPreloadSettings(settingsObj, opts = {}) {
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const preloadResources = opts.preloadResources === true;
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const preloadLevelPrefabs = opts.preloadLevelPrefabs === true;
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const bundles = settingsObj.assets?.projectBundles || [];
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const preload = [{ bundle: 'main' }];
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if (preloadResources && bundles.includes('resources')) {
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preload.push({ bundle: 'resources' });
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}
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if (preloadLevelPrefabs && bundles.includes('level-prefabs')) {
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preload.push({ bundle: 'level-prefabs' });
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}
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settingsObj.assets = settingsObj.assets || {};
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settingsObj.assets.preloadBundles = preload;
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return settingsObj;
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}
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function printPackageReport(outDir, opts = {}) {
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const lines = ['\n>>> 包体积报告:'];
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const entries = [
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['cocos-js', path.join(outDir, 'cocos-js')],
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['src', path.join(outDir, 'src')],
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['assets/main', path.join(outDir, 'assets', 'main')],
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['assets/resources', path.join(outDir, 'assets', 'resources')],
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['assets/level-prefabs', path.join(outDir, 'assets', 'level-prefabs')],
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['assets/internal', path.join(outDir, 'assets', 'internal')],
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['levels-database.json', path.join(outDir, 'levels-database.json')],
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['levels-database.json.br', path.join(outDir, 'levels-database.json.br')],
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['Build', path.join(outDir, 'Build')],
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];
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let total = 0;
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for (const [label, p] of entries) {
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if (!fs.existsSync(p)) continue;
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const sz = fs.statSync(p).isDirectory() ? dirSize(p) : fileSize(p);
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if (sz <= 0) continue;
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total += sz;
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lines.push(` ${label.padEnd(28)} ${formatBytes(sz)}`);
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}
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const grand = dirSize(outDir);
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lines.push(` ${'合计（顶层目录）'.padEnd(28)} ${formatBytes(grand)}`);
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if (opts.preloadNote) lines.push(` 预加载: ${opts.preloadNote}`);
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console.log(lines.join('\n'));
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}
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module.exports = {
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formatBytes,
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dirSize,
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fileSize,
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minifyLevelsDatabase,
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brotliCompressFile,
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patchPreloadSettings,
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printPackageReport,
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};
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