game_cocos_2c/assets/scripts/utils/ResHelper.ts

import { AppKernel } from "@scripts/app/AppKernel";
import { AssetSlot } from "@scripts/components/AssetSlot";
import { BUNDLE_ID } from "@scripts/define/ResDefine";
import { Sprite, SpriteFrame } from "cc";

/**
 * 动态加载spriteFrame  path和bundle都是空 则为sprite.spriteFrame = null;
 * @param sprite 
 * @param path 
 * @param bundle 
 * @returns 
 */
export async function setSpriteFrame(sprite: Sprite, path?: string, bundle?: string) {
    const node = sprite.node;
    const slot = node.getComponent(AssetSlot) || node.addComponent(AssetSlot);
    if (!path && !bundle) {
        slot.changeAsset(null);
        sprite.spriteFrame = null;
        return;
    }

    let res: SpriteFrame = null;
    const resources = AppKernel.resources;
    if (path.startsWith("http")) {
        res = await resources.loadRemoteSp(path);
    } else {
        res = await resources.load(bundle || BUNDLE_ID.Lobby, path, SpriteFrame);
    }

    if (!res) return;
    if (!sprite.isValid) {
        resources.releaseRes(res);
        return;
    }

    res.addRef();
    sprite.spriteFrame = res;
    slot.changeAsset(res);
    return res;
}