- const piece = move.appear[0].p;
- if ([V.KING, V.KN, V.KB, V.KR].includes(piece))
- this.kingPos[c] = [move.appear[0].x, move.appear[0].y];
- this.updateCastleFlags(move, piece);
+ move.kingMove = (
+ [V.KING, V.KN, V.KB, V.KR].includes(move.appear[0].p) &&
+ [V.KING, V.KN, V.KB, V.KR].includes(move.vanish[0].p)
+ );
+ if (move.kingMove) this.kingPos[c] = [move.appear[0].x, move.appear[0].y];
+ this.updateCastleFlags(move, move.appear[0].p);