src/asset-loaders/MusicAsset.js
import Asset from '../systems/AssetSystem/Asset';
/**
* Music asset loader.
*/
export default class MusicAsset extends Asset {
/**
* Asset factory.
*
* @param {*} args - Factory parameters.
*
* @return {MusicAsset} Asset instance.
*
* @example
* system.registerProtocol('music', MusicAsset.factory);
*/
static factory(...args) {
return new MusicAsset(...args);
}
/**
* @override
*/
load() {
const { filename, owner } = this;
return owner.fetchEngine(owner.pathPrefix + filename, owner.fetchOptions)
.then(response => !!response.ok
? response.blob()
: Promise.reject(new Error(`Cannot load music file: ${filename}`))
)
.then(data => new Promise((resolve, reject) => {
const audio = new Audio();
this.data = audio;
audio.onerror = error => reject(`Cannot read music file: ${filename}`);
audio.src = URL.createObjectURL(data);
resolve(this);
}));
}
}