void StretchableLayoutResizerBar::mouseDrag (const MouseEvent& e)
{
const int desiredPos = mouseDownPos + (isVertical ? e.getDistanceFromDragStartX()
: e.getDistanceFromDragStartY());
if (layout->getItemCurrentPosition (itemIndex) != desiredPos)
{
layout->setItemPosition (itemIndex, desiredPos);
hasBeenMoved();
}
}
void PAWN::legalMoves
(
POSITION start,
const BOARD &board,
POSITIONLIST &moves
) const
{
int delta, limit;
POSITION doubleMovedPawn;
if (promotePiece)
{
promotePiece->legalMoves(start, board, moves);
return;
}
if (whatColor() == WHITE)
{
delta = 1;
limit = NUMCOLS;
}
else
{
delta = -1;
limit = -1;
}
moves.nMoves = 0;
// check if en passant capture possible
if (board.lastMoveDoublePawn(doubleMovedPawn))
if ((start.col == doubleMovedPawn.col) &&
(whatColor() != board.whatPiece(doubleMovedPawn)->whatColor()))
{
if ((start.row - 1) == doubleMovedPawn.row)
{
moves.end[moves.nMoves].row = start.row - 1;
moves.end[moves.nMoves++].col = start.col + delta;
}
else if ((start.row + 1) == doubleMovedPawn.row)
{
moves.end[moves.nMoves].row = start.row + 1;
moves.end[moves.nMoves++].col = start.col + delta;
}
}
start.col += delta;
if (start.col == limit)
return;
// check for moves ahead
if (!board.whatPiece(start))
{
moves.end[moves.nMoves++] = start;
// check if initial double move possible
if (!hasBeenMoved())
if (!board.whatPiece(start.row, start.col + delta))
{
moves.end[moves.nMoves].row = start.row;
moves.end[moves.nMoves++].col = start.col + delta;
}
}
// check for captures
if (start.row > 0)
if (board.whatPiece(start.row - 1, start.col))
if (board.whatPiece(start.row - 1, start.col)->whatColor() !=
whatColor())
{
moves.end[moves.nMoves].row = start.row - 1;
moves.end[moves.nMoves++].col = start.col;
}
if (start.row < (NUMROWS - 1))
if (board.whatPiece(start.row + 1, start.col))
if (board.whatPiece(start.row + 1, start.col)->whatColor() !=
whatColor())
{
moves.end[moves.nMoves].row = start.row + 1;
moves.end[moves.nMoves++].col = start.col;
}
return;
}
