variants/Antiking2/class.js

   1 import ChessRules from "/base_rules.js";
   2 import AbstractAntikingRules from "/variants/AbstractAntiking.js";
   3 import { Random } from "/utils/alea.js";
   4
   5 export class Antiking2Rules extends AbstractAntikingRules {
   6
   7   static get Aliases() {
   8     return Object.assign({'A': AbstractAntikingRules}, ChessRules.Aliases);
   9   }
  10
  11   static get Options() {
  12     return {
  13       styles: A.Options.styles.concat("cylinder")
  14     };
  15   }
  16
  17   genRandInitFen(seed) {
  18     const baseFen = super.genRandInitFen(seed);
  19     // Just add an antiking on 3rd ranks
  20     let akPos = [3, 3];
  21     if (this.options.randomness >= 1) {
  22       akPos[0] = Random.randInt(this.size.y);
  23       if (this.options.randomness == 2)
  24         akPos[1] = Random.randInt(this.size.y);
  25       else
  26         akPos[1] = akPos[0];
  27     }
  28     const whiteLine = (akPos[0] > 0 ? akPos[0] : "") + 'A' + (akPos < this.size.y - 1 ? ...);
  29     const blackLine = ...
  30     return baseFen.replace(...)
  31   }
  32
  33 };