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

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