avocado-old/packages/entity/traits/existent.js

import {compose} from '@avocado/core';

import {StateProperty, Trait} from '../trait';

const decorate = compose(
  StateProperty('name'),
  StateProperty('isTicking'),
);

class ExistentBase extends Trait {

  static defaultState() {
    return {
      name: 'Untitled entity',
      isTicking: true,
    };
  }

  initialize() {
    this._isTicking = this.params.get('isTicking');
  }

  methods() {
    return {

      destroy: () => {
        this.entity.isTicking = false;
        this.entity.emit('destroy');
        this.entity.emit('destroyed');
      },

      tick: (elapsed) => {
        if (!this.entity.isTicking) {
          return;
        }
        this.entity.emit('tick', elapsed);
      },

    };
  }

}

export class Existent extends decorate(ExistentBase) {}