client/src/variants/Selfabsorption.js

   1 import { ChessRules } from "@/base_rules";
   2 import { AbsorptionRules } from "@/variants/Absorption";
   3
   4 export class SelfabsorptionRules extends AbsorptionRules {
   5
   6   canTake([x1, y1], [x2, y2]) {
   7     if (this.getColor(x1, y1) !== this.getColor(x2, y2)) return true;
   8     const p1 = this.getPiece(x1, y1);
   9     const p2 = this.getPiece(x2, y2);
  10     return (
  11       p1 != p2 &&
  12       [V.QUEEN, V.ROOK, V.KNIGHT, V.BISHOP].includes(p1) &&
  13       [V.QUEEN, V.ROOK, V.KNIGHT, V.BISHOP].includes(p2)
  14     );
  15   }
  16
  17   getPotentialMovesFrom(sq) {
  18     let moves = [];
  19     const piece = this.getPiece(sq[0], sq[1]);
  20     switch (piece) {
  21       case V.RN:
  22         moves =
  23           super.getPotentialRookMoves(sq).concat(
  24           super.getPotentialKnightMoves(sq));
  25         break;
  26       case V.BN:
  27         moves =
  28           super.getPotentialBishopMoves(sq).concat(
  29           super.getPotentialKnightMoves(sq));
  30         break;
  31       case V.QN:
  32         moves =
  33           super.getPotentialQueenMoves(sq).concat(
  34           super.getPotentialKnightMoves(sq));
  35         break;
  36       case V.PAWN:
  37         moves = super.getPotentialPawnMoves(sq);
  38         break;
  39       case V.ROOK:
  40         moves = super.getPotentialRookMoves(sq);
  41         break;
  42       case V.KNIGHT:
  43         moves = super.getPotentialKnightMoves(sq);
  44         break;
  45       case V.BISHOP:
  46         moves = super.getPotentialBishopMoves(sq);
  47         break;
  48       case V.QUEEN:
  49         moves = super.getPotentialQueenMoves(sq);
  50         break;
  51       case V.KING:
  52         moves = super.getPotentialKingMoves(sq);
  53         break;
  54     }
  55     moves.forEach(m => {
  56       if (
  57         m.vanish.length == 2 && m.appear.length == 1 &&
  58         piece != m.vanish[1].p && m.vanish[0].c == m.vanish[1].c
  59       ) {
  60         // Augment pieces abilities in case of self-captures
  61         m.appear[0].p = V.Fusion(piece, m.vanish[1].p);
  62       }
  63     });
  64     return moves;
  65   }
  66
  67 };