client/src/variants/Newzealand.js

   1 import { ChessRules } from "@/base_rules";
   2
   3 // NOTE: a lot copy-pasted from Hoppelpoppel
   4 export class NewzealandRules extends ChessRules {
   5
   6   getSlideNJumpMoves_([x, y], steps, oneStep, options) {
   7     options = options || {};
   8     let moves = [];
   9     outerLoop: for (let step of steps) {
  10       let i = x + step[0];
  11       let j = y + step[1];
  12       while (V.OnBoard(i, j) && this.board[i][j] == V.EMPTY) {
  13         if (!options.onlyTake) moves.push(this.getBasicMove([x, y], [i, j]));
  14         if (!!oneStep) continue outerLoop;
  15         i += step[0];
  16         j += step[1];
  17       }
  18       if (V.OnBoard(i, j) && this.canTake([x, y], [i, j]) && !options.onlyMove)
  19         moves.push(this.getBasicMove([x, y], [i, j]));
  20     }
  21     return moves;
  22   }
  23
  24   getPotentialKnightMoves(sq) {
  25     // The knight captures like a rook
  26     return (
  27       this.getSlideNJumpMoves_(
  28         sq, ChessRules.steps[V.KNIGHT], "oneStep", { onlyMove: true })
  29       .concat(
  30         this.getSlideNJumpMoves_(
  31           sq, ChessRules.steps[V.ROOK], null, { onlyTake: true }))
  32     );
  33   }
  34
  35   getPotentialRookMoves(sq) {
  36     // The rook captures like a knight
  37     return (
  38       this.getSlideNJumpMoves_(
  39         sq, ChessRules.steps[V.ROOK], null, { onlyMove: true })
  40       .concat(
  41         this.getSlideNJumpMoves_(
  42           sq, ChessRules.steps[V.KNIGHT], "oneStep", { onlyTake: true }))
  43     );
  44   }
  45
  46   isAttackedByKnight([x, y], color) {
  47     return super.isAttackedBySlideNJump(
  48       [x, y],
  49       color,
  50       V.KNIGHT,
  51       V.steps[V.ROOK]
  52     );
  53   }
  54
  55   isAttackedByROOK([x, y], color) {
  56     return super.isAttackedBySlideNJump(
  57       [x, y],
  58       color,
  59       V.ROOK,
  60       V.steps[V.KNIGHT],
  61       "oneStep"
  62     );
  63   }
  64
  65 };