git.r.bdr.sh - rbdr/sumo/blob - lib/factories/sumo.js

   1 import { Entity } from '@serpentity/serpentity';
   2
   3 import PositionComponent from '@serpentity/components.position';
   4 import PixiContainerComponent from '../components/pixi_container';
   5 import PixiFactory from '../factories/pixi';
   6
   7 /**
   8  * Factory object that contains many methods to create prefab entities.
   9  *
  10  * @type object
  11  * @name SumoFactory
  12  */
  13 export default {
  14
  15   /**
  16    * Creates a sumo entity and adds it to the engine. Can override
  17    * position in the config object
  18    *
  19    * @function createSumo
  20    * @memberof SumoFactory
  21    * @param {external:Serpentity} [engine] the serpentity engine to attach
  22    * to. If not sent, it will not be attached.
  23    * @param {object} [config] the config to override the entity, accepts
  24    * the key `position` as an object with an x and y property.
  25    * @return {external:Serpentity.Entity} the created entity
  26    */
  27   createSumo(engine, config = {}) {
  28
  29     const entity = new Entity();
  30
  31     entity.addComponent(new PositionComponent(config.position));
  32
  33     const container = config.container || {
  34       container: PixiFactory.createSumo()
  35     };
  36
  37     // Match the symbol position with the entity position on init
  38     // Otherwise it's up to systems
  39     const position = entity.getComponent(PositionComponent);
  40     container.container.position.x = position.x;
  41     container.container.position.y = position.y;
  42
  43     entity.addComponent(new PixiContainerComponent(container));
  44
  45     if (engine) {
  46       engine.addEntity(entity);
  47     }
  48
  49     return entity;
  50   }
  51 };