game_cocos_2c/assets/scripts/components/AssetSlot.ts

import { AppKernel } from '@scripts/app/AppKernel';
import { _decorator, Asset, Component, Node } from 'cc';
const { ccclass, property } = _decorator;

@ccclass('AssetSlot')
export class AssetSlot extends Component {
    private _preAsset: Asset;

    changeAsset(res: Asset) {
        this.releaseRes(this._preAsset);
        this._preAsset = res;
    }

    releaseRes(res: Asset) {
        // const res = this._preAsset;
        if (res) {
            AppKernel.resources.releaseRes(res);
        }
    }

    protected onDestroy(): void {
        this.releaseRes(this._preAsset);
        this._preAsset = null;
    }
}