client/src/variants/Discoduel.js

   1 import { ChessRules } from "@/base_rules";
   2
   3 export class DiscoduelRules extends ChessRules {
   4
   5   static get Options() {
   6     return null;
   7   }
   8
   9   static get PawnSpecs() {
  10     return Object.assign(
  11       {},
  12       ChessRules.PawnSpecs,
  13       { promotions: [V.PAWN] }
  14     );
  15   }
  16
  17   static get HasFlags() {
  18     return false;
  19   }
  20
  21   scanKings() {}
  22
  23   static GenRandInitFen() {
  24     return "1n4n1/8/8/8/8/8/PPPPPPPP/8 w 0 -";
  25   }
  26
  27   getPotentialMovesFrom(sq) {
  28     const moves = super.getPotentialMovesFrom(sq);
  29     if (this.turn == 'b')
  30       // Prevent pawn captures on last rank:
  31       return moves.filter(m => m.vanish.length == 1 || m.vanish[1].x != 0);
  32     return moves;
  33   }
  34
  35   filterValid(moves) {
  36     return moves;
  37   }
  38
  39   getCheckSquares() {
  40     return [];
  41   }
  42
  43   getCurrentScore() {
  44     // No real winning condition (promotions count...)
  45     if (!this.atLeastOneMove()) return "1/2";
  46     return "*";
  47   }
  48
  49   postPlay() {}
  50   postUndo() {}
  51
  52   static get SEARCH_DEPTH() {
  53     return 4;
  54   }
  55
  56 };