//TODO: Factory?
private Move CreateMoveFromRayMove(Piece piece, RayMove rayMove, int x)
{
if (rayMove.IsShortCastle)
{
return(new ShortCastle(piece, Board.GetCell(rayMove.Origin + x * rayMove.Vector)));
}
if (rayMove.IsLongCastle)
{
return(new LongCastle(piece, Board.GetCell(rayMove.Origin + x * rayMove.Vector)));
}
if (rayMove.IsPassant)
{
return(new Passant(piece, Board.GetCell(rayMove.Origin + x * rayMove.Vector)));
}
if (piece is Pawn pawn)
{
int targetY = (rayMove.Origin + x * rayMove.Vector).Y;
if (pawn.Color == PlayerColor.White && targetY == Board.Size - 1 ||
pawn.Color == PlayerColor.Black && targetY == 0)
{
return(new Promotion(piece, Board.GetCell(rayMove.Origin + x * rayMove.Vector)));
}
}
return(new Move(piece, Board.GetCell(rayMove.Origin + x * rayMove.Vector)));
}
private void CalculateAttackFromRayMove(RayMove rayMove)
{
Cell originCell = Board.GetCell(rayMove.Origin);
for (int x = 1; x <= rayMove.Range; x++)
{
Cell targetCell = Board.GetCell(rayMove.Origin + x * rayMove.Vector);
targetCell?.SetUnderAttack(originCell.CurrentPiece.Color);
if (targetCell is null || !targetCell.IsEmpty && !(targetCell.CurrentPiece is King))
{
return;
}
}
}
private void CalculatePinsFromRayMove(RayMove rayMove)
{
Piece enemyPieceInPath = null;
Cell originCell = Board.GetCell(rayMove.Origin);
for (int x = 1; x <= rayMove.Range; x++)
{
Cell targetCell = Board.GetCell(rayMove.Origin + x * rayMove.Vector);
if (targetCell == null)
{
return;
}
if (targetCell.IsEmpty)
{
continue;
}
if (targetCell.CurrentPiece.Color == originCell.CurrentPiece.Color)
{
return;
}
if (targetCell.CurrentPiece is King)
{
if (enemyPieceInPath != null)
{
enemyPieceInPath.Pin = rayMove;
}
else
{
targetCell.CurrentPiece.Pin = new RayMove(rayMove.Origin, rayMove.Vector, x);
}
return;
}
if (enemyPieceInPath != null)
{
return;
}
enemyPieceInPath = targetCell.CurrentPiece;
}
}
private void CalculateMoveFromRayMove(RayMove rayMove)
{
Piece piece = Board.GetCell(rayMove.Origin).CurrentPiece;
for (int x = 1; x <= rayMove.Range; x++)
{
Move move = CreateMoveFromRayMove(piece, rayMove, x);
if (move.IsLegal(Board))
{
piece.Moves.Add(move);
}
if (move.IsLastInPath)
{
break;
}
}
}
