client/src/variants/Knightmate1.js

   1 import { ChessRules } from "@/base_rules";
   2
   3 export class Knightmate1Rules extends ChessRules {
   4
   5   static get COMMONER() {
   6     return "c";
   7   }
   8
   9   static get PIECES() {
  10     return ChessRules.PIECES.concat([V.COMMONER]);
  11   }
  12
  13   getPpath(b) {
  14     return ([V.KING, V.COMMONER].includes(b[1]) ? "Knightmate/" : "") + b;
  15   }
  16
  17   static GenRandInitFen(options) {
  18     return ChessRules.GenRandInitFen(options)
  19       .replace(/n/g, 'c').replace(/N/g, 'C');
  20   }
  21
  22   getPotentialMovesFrom([x, y]) {
  23     switch (this.getPiece(x, y)) {
  24       case V.COMMONER:
  25         return this.getPotentialCommonerMoves([x, y]);
  26       default:
  27         return super.getPotentialMovesFrom([x, y]);
  28     }
  29   }
  30
  31   getPotentialCommonerMoves(sq) {
  32     return this.getSlideNJumpMoves(
  33       sq, V.steps[V.ROOK].concat(V.steps[V.BISHOP]), 1);
  34   }
  35
  36   getPotentialKingMoves(sq) {
  37     return super.getPotentialKnightMoves(sq).concat(super.getCastleMoves(sq));
  38   }
  39
  40   isAttacked(sq, color) {
  41     return (
  42       this.isAttackedByCommoner(sq, color) ||
  43       this.isAttackedByPawn(sq, color) ||
  44       this.isAttackedByRook(sq, color) ||
  45       this.isAttackedByBishop(sq, color) ||
  46       this.isAttackedByQueen(sq, color) ||
  47       this.isAttackedByKing(sq, color)
  48     );
  49   }
  50
  51   isAttackedByKing(sq, color) {
  52     return this.isAttackedBySlideNJump(
  53       sq, color, V.KING, V.steps[V.KNIGHT], 1);
  54   }
  55
  56   isAttackedByCommoner(sq, color) {
  57     return this.isAttackedBySlideNJump(
  58       sq, color, V.COMMONER, V.steps[V.ROOK].concat(V.steps[V.BISHOP]), 1);
  59   }
  60
  61   static get VALUES() {
  62     return {
  63       p: 1,
  64       r: 5,
  65       c: 5, //the commoner is valuable
  66       b: 3,
  67       q: 9,
  68       k: 1000
  69     };
  70   }
  71
  72 };