client/src/variants/Selfabsorb.js

   1 import { ChessRules } from "@/base_rules";
   2 import { AbsorptionRules } from "@/variants/Absorption";
   3
   4 export class SelfabsorbRules 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.RN, V.BN, V.ROOK, V.KNIGHT, V.BISHOP].includes(p1) &&
  13       [V.QUEEN, V.RN, V.BN, V.ROOK, V.KNIGHT, V.BISHOP].includes(p2) &&
  14       (p1 != V.QUEEN || p2 == V.KNIGHT) &&
  15       (p2 != V.QUEEN || p1 == V.KNIGHT) &&
  16       (p1 != V.RN || p2 == V.BISHOP) &&
  17       (p2 != V.RN || p1 == V.BISHOP) &&
  18       (p1 != V.BN || p2 == V.ROOK) &&
  19       (p2 != V.BN || p1 == V.ROOK)
  20     );
  21   }
  22
  23   getPotentialMovesFrom(sq) {
  24     let moves = [];
  25     const piece = this.getPiece(sq[0], sq[1]);
  26     switch (piece) {
  27       case V.RN:
  28         moves =
  29           super.getPotentialRookMoves(sq).concat(
  30           super.getPotentialKnightMoves(sq));
  31         break;
  32       case V.BN:
  33         moves =
  34           super.getPotentialBishopMoves(sq).concat(
  35           super.getPotentialKnightMoves(sq));
  36         break;
  37       case V.QN:
  38         moves =
  39           super.getPotentialQueenMoves(sq).concat(
  40           super.getPotentialKnightMoves(sq));
  41         break;
  42       case V.PAWN:
  43         moves = super.getPotentialPawnMoves(sq);
  44         break;
  45       case V.ROOK:
  46         moves = super.getPotentialRookMoves(sq);
  47         break;
  48       case V.KNIGHT:
  49         moves = super.getPotentialKnightMoves(sq);
  50         break;
  51       case V.BISHOP:
  52         moves = super.getPotentialBishopMoves(sq);
  53         break;
  54       case V.QUEEN:
  55         moves = super.getPotentialQueenMoves(sq);
  56         break;
  57       case V.KING:
  58         moves = super.getPotentialKingMoves(sq);
  59         break;
  60     }
  61     moves.forEach(m => {
  62       if (
  63         m.vanish.length == 2 && m.appear.length == 1 &&
  64         piece != m.vanish[1].p && m.vanish[0].c == m.vanish[1].c
  65       ) {
  66         // Augment pieces abilities in case of self-captures
  67         m.appear[0].p = V.Fusion(piece, m.vanish[1].p);
  68       }
  69     });
  70     return moves;
  71   }
  72
  73 };