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

   1 import { System } from '@serpentity/serpentity';
   2
   3 import LimitedVelocityNode from '../nodes/limited_velocity';
   4
   5 /**
   6  * Reduces velocity if it exceeds threshold
   7  *
   8  * @extends {external:Serpentity.System}
   9  * @class ReduceVelocitySystem
  10  * @param {object} config a configuration object to extend.
  11  */
  12 export default class ReduceVelocitySystem extends System {
  13
  14   constructor(config = {}) {
  15
  16     super();
  17
  18     /**
  19      * The node collection of entities that have external force
  20      *
  21      * @property {external:Serpentity.NodeCollection} limitedVelocityEntities
  22      * @instance
  23      * @memberof ReduceVelocitySystem
  24      */
  25     this.limitedVelocityEntities = null;
  26   }
  27
  28   /**
  29    * Initializes system when added. Requests limited velocity nodes
  30    *
  31    * @function added
  32    * @memberof ReduceVelocitySystem
  33    * @instance
  34    * @param {external:Serpentity.Engine} engine the serpentity engine to
  35    * which we are getting added
  36    */
  37   added(engine) {
  38
  39     this.limitedVelocityEntities = engine.getNodes(LimitedVelocityNode);
  40   }
  41
  42   /**
  43    * Clears system resources when removed.
  44    *
  45    * @function removed
  46    * @instance
  47    * @memberof ReduceVelocitySystem
  48    */
  49   removed() {
  50
  51     this.limitedVelocityEntities = null;
  52   }
  53
  54   /**
  55    * Runs on every update of the loop. Checks current velocity and adjusts if necessary
  56    *
  57    * @function update
  58    * @instance
  59    * @param {Number} currentFrameDuration the duration of the current
  60    * frame
  61    * @memberof ReduceVelocitySystem
  62    */
  63   update(currentFrameDuration) {
  64
  65     for (const limitedVelocityEntity of this.limitedVelocityEntities) {
  66       console.log(limitedVelocityEntity.body.body.velocity, limitedVelocityEntity.maxVelocity.maxVelocity);
  67     }
  68   }
  69 };
  70