toJson method
Implementation
Map<String, dynamic> toJson() => {
'enabled': enabled,
if (kTarget != null) 'kTarget': kTarget,
if (qTarget != null) 'qTarget': qTarget,
if (enabled) 'fixedRooks': fixedRooks,
if (kRook != null) 'kRook': kRook,
if (qRook != null) 'qRook': qRook,
if (rookPiece != null) 'rookPiece': rookPiece,
if (enabled) 'useRookAsTarget': useRookAsTarget,
};