65 lines
2.4 KiB
TypeScript
65 lines
2.4 KiB
TypeScript
import { _decorator, Asset, Node, Prefab, instantiate, AssetManager, assetManager, sys } from 'cc';
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export class ResManager {
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private static _instance: ResManager = null;
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public static get instance(): ResManager {
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if (!this._instance) {
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this._instance = new ResManager();
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}
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return this._instance;
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}
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async loadPrefabFromBundle(bundleName: string, path: string, progressCallback?: (finished: number, total: number) => void): Promise<Node> {
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try {
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if (!sys.isBrowser) {
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assetManager.cacheManager.cacheEnabled = true;
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}
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const TOTAL = 200;
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let bundle = await new Promise<AssetManager.Bundle>((resolve, reject) => {
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assetManager.loadBundle(
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bundleName,
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(finished: number, total: number) => {
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if (typeof finished === 'number' && typeof total === 'number' && total > 0) {
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const overallFinished = Math.floor((finished / total) * 100);
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progressCallback?.(overallFinished, TOTAL);
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}
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},
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(err, bundle) => err ? reject(err) : resolve(bundle)
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);
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});
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// 整包预加载，覆盖所有资源类型
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await new Promise<void>((resolve, reject) => {
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bundle.loadDir(
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'',
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(finished: number, total: number) => {
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if (typeof finished === 'number' && typeof total === 'number' && total > 0) {
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const overallFinished = 100 + Math.floor((finished / total) * 100);
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progressCallback?.(overallFinished, TOTAL);
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}
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},
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(err) => err ? reject(err) : resolve()
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);
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});
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// 从缓存获取目标 Prefab，未命中再补一次 load
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let prefab = bundle.get(path, Prefab);
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if (!prefab) {
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prefab = await new Promise<Prefab>((resolve, reject) => {
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bundle.load(path, Prefab, (e, p) => e ? reject(e) : resolve(p));
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});
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}
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return instantiate(prefab);
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} catch (error) {
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console.error(`加载失败: ${bundleName}/${path}`, error);
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throw error;
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}
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}
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} |