public void ValidateMove(IFigure figure, IBoard board, Move move)
{
var rowDistance = Math.Abs(move.From.Row - move.To.Row);
var colDistance = Math.Abs(move.From.Col - move.To.Col);
if (rowDistance != colDistance)
{
throw new InvalidOperationException(BishopInvalidMove);
}
var from = move.From;
var to = move.To;
int rowIndex = from.Row;
char colIndex = from.Col;
var other = figure.Color == ChessColor.White ? ChessColor.Black : ChessColor.White;
// top-right
while (true)
{
rowIndex++;
colIndex++;
if (to.Row == rowIndex && to.Col == colIndex)
{
var figureAtPosition = board.GetFigureAtPosition(to);
if (figureAtPosition != null && figureAtPosition.Color == figure.Color)
{
throw new InvalidOperationException("There is a figure on the way!");
}
else
{
return;
}
}
var position = Position.FromChessCoordinates(rowIndex, colIndex);
var figAtPosition = board.GetFigureAtPosition(position);
if (figAtPosition != null)
{
throw new InvalidOperationException("There is a figure on the way!");
}
}
}
public void ValidateMove(IFigure figure, IBoard board, Move move)
{
var other = figure.Color == ChessColor.White ? ChessColor.White : ChessColor.Black;
var from = move.From;
var to = move.To;
if ((from.Row == to.Row + 1 && from.Col == to.Col + 1) || // top right
(from.Row == to.Row + 1 && from.Col == to.Col) || // top center
(from.Row == to.Row + 1 && from.Col == to.Col - 1) || // top left
(from.Row == to.Row && from.Col == to.Col - 1) || // left
(from.Row == to.Row && from.Col == to.Col + 1) || // right
(from.Row == to.Row - 1 && from.Col == to.Col + 1) || // bottom right)
(from.Row == to.Row - 1 && from.Col == to.Col) || // bottom center
(from.Row == to.Row - 1 && from.Col == to.Col - 1)) // bottom left;
{
if (this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
throw new InvalidOperationException(KingInvalidMove);
}
public void ValidateMove(IFigure figure, IBoard board, Move move)
{
var color = figure.Color;
var other = figure.Color == ChessColor.White ? ChessColor.White : ChessColor.Black;
var from = move.From;
var to = move.To;
// TODO: [Bug] е7-а6 is a valid move
if (color == ChessColor.White &&
to.Row < from.Row)
{
throw new InvalidOperationException(PawnBackwardsErrorMessage);
}
if (color == ChessColor.Black && to.Row > from.Row)
{
throw new InvalidOperationException(PawnBackwardsErrorMessage);
}
if (color == ChessColor.White)
{
if(from.Row + 1 == to.Row && this.CheckDiagonalMove(from, to))
{
if (this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
}
else if (color == ChessColor.Black )
{
if (from.Row - 1 == to.Row && this.CheckDiagonalMove(from, to))
{
if (this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
}
// TODO: remove 2 magic number (const)
if (from.Row == 2 && color == ChessColor.White)
{
if (from.Row + 2 == to.Row &&
this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
else if (from.Row == 7 && color == ChessColor.Black)
{
if (from.Row - 2 == to.Row &&
this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
if (from.Row + 1 == to.Row && color == ChessColor.White)
{
if (this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
else if (from.Row - 1 == to.Row && color == ChessColor.Black)
{
if (this.CheckOtherFigureIfValid(board, to, other))
{
return;
}
}
throw new InvalidOperationException(PawnInvalidMove);
}