client/src/variants/Discoduel.js

   1 import { ChessRules } from "@/base_rules";
   2
   3 export class DiscoduelRules extends ChessRules {
   4
   5   static get PawnSpecs() {
   6     return Object.assign(
   7       {},
   8       ChessRules.PawnSpecs,
   9       { promotions: [V.PAWN] }
  10     );
  11   }
  12
  13   static get HasFlags() {
  14     return false;
  15   }
  16
  17   scanKings() {}
  18
  19   static GenRandInitFen() {
  20     return "1n4n1/8/8/8/8/8/PPPPPPPP/8 w 0 -";
  21   }
  22
  23   getPotentialMovesFrom(sq) {
  24     const moves = super.getPotentialMovesFrom(sq);
  25     if (this.turn == 'b')
  26       // Prevent pawn captures on last rank:
  27       return moves.filter(m => m.vanish.length == 1 || m.vanish[1].x != 0);
  28     return moves;
  29   }
  30
  31   filterValid(moves) {
  32     return moves;
  33   }
  34
  35   getCheckSquares() {
  36     return [];
  37   }
  38
  39   getCurrentScore() {
  40     // No real winning condition (promotions count...)
  41     if (!this.atLeastOneMove()) return "1/2";
  42     return "*";
  43   }
  44
  45   postPlay() {}
  46   postUndo() {}
  47
  48   static get SEARCH_DEPTH() {
  49     return 4;
  50   }
  51
  52 };