top-down-action-adventure/src/assets.js

export default class Assets {
  constructor() {
    this.assetMap = {}
  }

  get(assetName) {
    return this.assetMap[assetName]
  }

  async load() {
    return Promise.all([
      this.loadImage("tilesheet", "./assets/RPGpack_sheet.png")
    ])
  }

  loadImage(name, path) {
    return new Promise(resolve => {
      const img = new Image()
      this.assetMap[name] = img
      img.src = path
      img.addEventListener("load", () => resolve(img))
    })
  }
}