git.r.bdr.sh - rbdr/serpentity/blob - lib/serpentity/node.js

   1 'use strict';
   2
   3 /*
   4  * A node describes a set of components in order to describe entities
   5  * that include them.
   6  */
   7 const Node = class Node {
   8
   9   /*
  10    * Returns true if the given entity matches the defined protocol,
  11    * false otherwise
  12    */
  13   static matches(entity) {
  14
  15     const typeNames = Object.keys(this.types);
  16
  17     for (const typeName of typeNames) {
  18
  19       const type = this.types[typeName];
  20       let matched = false;
  21
  22       if (entity.hasComponent(type)) {
  23         matched = true;
  24       }
  25
  26       if (!matched) {
  27         return false;
  28       }
  29     }
  30
  31     return true;
  32   }
  33
  34   constructor(config) {
  35
  36     this.types = {};
  37
  38     Object.assign(this, config);
  39   }
  40 };
  41
  42 module.exports = Node;