silphius/app/ecs-components/ticking.js

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

export default class Ticking extends Component {
  instanceFromSchema() {
    const Instance = super.instanceFromSchema();

    Instance.prototype.$$finished = [];
    Instance.prototype.$$tickingPromises = [];
    Instance.prototype.addTickingPromise = function(tickingPromise) {
      this.$$tickingPromises.push(tickingPromise);
      tickingPromise.then(() => {
        this.$$finished.push(tickingPromise);
      });
    }
    Instance.prototype.tick = function(elapsed) {
      for (const tickingPromise of this.$$finished) {
        this.$$tickingPromises.splice(
          this.$$tickingPromises.indexOf(tickingPromise),
          1,
        );
      }
      this.$$finished = [];
      for (const tickingPromise of this.$$tickingPromises) {
        tickingPromise.tick(elapsed);
      }
      for (const tickingPromise of this.$$finished) {
        this.$$tickingPromises.splice(
          this.$$tickingPromises.indexOf(tickingPromise),
          1,
        );
      }
      this.$$finished = [];
    }
    return Instance;
  }
  static properties = {
    isTicking: {defaultValue: 1, type: 'uint8'},
  };
}