client/src/variants/Pawnmassacre.js

   1 import { ChessRules } from "@/base_rules";
   2
   3 export class PawnmassacreRules extends ChessRules {
   4   static get HasFlags() {
   5     return false;
   6   }
   7
   8   static GenRandInitFen(randomness) {
   9     const bFen =
  10       ChessRules.GenRandInitFen(randomness)
  11       // Remove castle flags
  12       .slice(0, -6).concat("-");
  13     const splitIdx = bFen.indexOf(' ');
  14     return (
  15       bFen.substr(0, splitIdx)
  16       .replace("PPPPPPPP", "pppppppp")
  17       // Next replacement is OK because only acts on first occurrence
  18       .replace("pppppppp", "PPPPPPPP")
  19       .split("").reverse().join("")
  20       .concat(bFen.substr(splitIdx))
  21     );
  22   }
  23 };