private void AppendRayMoves(
BoardSquare originSquare,
Position.Position position,
MoveDelta rayDelta,
List <Move> moves)
{
var board = position.Board;
var moveBuilder = new MoveBuilder(piece, originSquare);
var currentSquare = originSquare;
while (rayDelta.IsCanApplyTo(currentSquare))
{
currentSquare = rayDelta.GetDestSquare(currentSquare);
if (board.IsEmpty(currentSquare))
{
moves.Add(moveBuilder.SetDestSquare(currentSquare).Build());
}
else
{
var obstacle = board.GetPieceAt(currentSquare);
if (obstacle.player != position.PlayerToMove)
{
moves.Add(moveBuilder
.SetDestSquare(currentSquare)
.SetCapture(obstacle.piece)
.Build());
}
break;
}
}
}
private static bool IsKingDelta(MoveDelta moveDelta)
{
return(moveDelta.DeltaRow >= -1 &&
moveDelta.DeltaRow <= 1 &&
moveDelta.DeltaColumn >= -1 &&
moveDelta.DeltaColumn <= 1);
}
private static bool IsKnightDelta(MoveDelta moveDelta)
{
int absDeltaRow = Abs(moveDelta.DeltaRow);
if (absDeltaRow == 0 || absDeltaRow > 2)
{
return(false);
}
return(absDeltaRow + Abs(moveDelta.DeltaColumn) == 3);
}
private static bool IsBishopDelta(MoveDelta moveDelta)
{
return((moveDelta.DeltaRow == moveDelta.DeltaColumn) ||
(moveDelta.DeltaRow == -moveDelta.DeltaColumn));
}
