client/src/variants/Discoduel.js

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