silphius/app/ecs/components/sound.js

import Component from '@/ecs/component.js';

export default class Sound extends Component {
  mergeDiff(original, update) {
    const merged = {};
    if (update.play) {
      merged.play = [
        ...(original.play ?? []),
        ...update.play,
      ];
    }
    return merged;
  }
  instanceFromSchema() {
    const Component = this;
    const Instance = super.instanceFromSchema();
    return class SoundInstance extends Instance {
      play(source) {
        Component.markChange(this.entity, 'play', [source]);
      }
    };
  }
}