tower/ts/layered_tile_factory.ts

import { AnimateDetail, TileFactory } from './tile_factory.js';

export class LayeredTileFactory extends TileFactory {
  tiles: TileFactory[];

  constructor(tiles: TileFactory[]) {
    super('', tiles[0].width, tiles[0].height);
    this.tiles = tiles;
  }

  get_elem(tileset: string): HTMLElement {
    const elem = document.createElement('div');
    elem.style.gridColumnEnd = `span ${this.width}`;
    elem.style.gridRowEnd = `span ${this.height}`;
    elem.style.position = 'relative';

    for (let i = 0; i < this.tiles.length; i++) {
      const tile = this.tiles[i];
      const sub = tile.get_elem(tileset);
      elem.appendChild(sub);
      sub.style.width = '100%';
      sub.style.height = '100%';
      sub.style.position = 'absolute';
      sub.style.top = '0';
      sub.style.left = '0';
      sub.style.zIndex = `${i}`;
    }

    elem.addEventListener('animate', (e: CustomEvent<AnimateDetail>) => {
      for (const sub of elem.children) {
        sub.dispatchEvent(new CustomEvent('animate', {'detail': e.detail}));
      }
    });

    // XXX removeme
    setInterval(() => {
      elem.dispatchEvent(new CustomEvent('animate', {'detail': {'name': 'fire'}}));
    }, 3250);

    return elem;
  }
}