public bool LogicMove(int x1, int y1, int x2, int y2, Board board)
{
if (IsInRange(x1, y1, x2, y2))
{
PieceBase piece = board.GetPiece(x1, y1);
if (!board.IsEmpty(x1, y1) && piece.IsValidMove(x1, y1, x2, y2, board.Turn, board))
{
//es Knight
if (piece.GetType() == typeof(Knight))
{
if (board.IsEmpty(x2, y2) && !CantMoveIsCheck(x1, y1, x2, y2, board))
{
board.Move(x1, y1, x2, y2);
return(true);
}
if (!board.IsEmpty(x2, y2) && !CantMoveIsCheck(x1, y1, x2, y2, board))
{
board.Remove(x2, y2);
board.Move(x1, y1, x2, y2);
return(true);
}
}
else
//no es Knight
{
if (board.IsEmpty(x2, y2) && !IsCastling(x1, y1, x2, board) && !CantMoveIsCheck(x1, y1, x2, y2, board) && !board.IsPawn(x1, y1))
{
if ((Math.Abs(x2 - x1) == Math.Abs(y2 - y1) && IsDiagonalEmpty(x1, y1, x2, y2, board)) || IsLineEmpty(x1, y1, x2, y2, board))
{
board.Move(x1, y1, x2, y2);
CastlingChanges(x1, y1, x2, y2, piece);
return(true);
}
}
if (!board.IsEmpty(x2, y2) && !IsAlly(x1, y1, x2, y2, board) && !IsCastling(x1, y1, x2, board) && !CantMoveIsCheck(x1, y1, x2, y2, board) && !board.IsPawn(x1, y1))
{
if ((Math.Abs(x2 - x1) == Math.Abs(y2 - y1) && IsDiagonalEmpty(x1, y1, x2, y2, board)) || IsLineEmpty(x1, y1, x2, y2, board))
{
board.Remove(x2, y2);
board.Move(x1, y1, x2, y2);
CastlingChanges(x1, y1, x2, y2, piece);
return(true);
}
}
if (board.IsEmpty(x2, y2) && IsCastling(x1, y1, x2, board) && CanCastling(x1, y1, x2, board))
{
board.Move(x1, y1, x2, y2);
piece.CanCastling = false;
MoveRookCastling(x1, y1, x2, board);
return(true);
}
if (IsPawn(piece) && IsPawnCapturing(x1, x2) && !board.IsEmpty(x2, y2) && !CantMoveIsCheck(x1, y1, x2, y2, board))
{
board.Remove(x2, y2);
board.Move(x1, y1, x2, y2);
if (Promoting(y2))
{
board.Promotion(x2, y2, board.Turn);
}
return(true);
}
if (IsPawn(piece) && IsPawnCapturing(x1, x2) && EnPassant(x1, y1, x2, y2, board) && !CantMoveIsCheck(x1, y1, x2, y2, board))
{
board.RemoveCapturePassant(x1, y1, x2, y2);
board.Move(x1, y1, x2, y2);
return(true);
}
if (IsPawn(piece) && !IsPawnCapturing(x1, x2) && board.IsEmpty(x2, y2) && IsLineEmpty(x1, y1, x2, y2, board) && !CantMoveIsCheck(x1, y1, x2, y2, board))
{
board.Move(x1, y1, x2, y2);
UpDateEnPassant(y1, y2, piece, board);
if (Promoting(y2))
{
board.Promotion(x2, y2, board.Turn);
}
return(true);
}
}
}
}
return(false);
}