private JavaList <object> AddNewGameMovement(PlayerMove playerMove, JavaList <object> moves)
{
if (playerMove == null)
{
return(moves);
}
JavaList <object> temp = new JavaList <object>();
while (!moves.IsEmpty())
{
var current = (JavaList <object>)moves.pop_front();
current.push_front(playerMove);
temp.push_back(current);
}
return(temp);
}
private JavaList <object> FindAllLegalSimpleAttackMoves(int currentPiecePos, int currentPlayerColor, int enemyColor)
{
var x = PosToCol(currentPiecePos);
var y = PosToBoardLine(currentPiecePos);
var moves = new JavaList <object>();
JavaList <object> tempMoves;
int enemyPos, nextPos;
var i = currentPlayerColor == WhitePiece ? -1 : 1;
// Diagonals UPR e DNR
if (x < 6 && y + i > 0 && y + i < 7)
{
enemyPos = ColLineToPos(x + 1, y + i);
nextPos = ColLineToPos(x + 2, y + 2 * i);
if ((_pieces[enemyPos] & ~King) == enemyColor && _pieces[nextPos] == EmptyPiece)
{
tempMoves = FindAllLegalSimpleAttackMoves(nextPos, currentPlayerColor, enemyColor);
moves.AppendToTail(AddNewGameMovement(new PlayerMove(currentPiecePos, nextPos), tempMoves));
}
}
// Diagonals DNR e UPL
if (x > 1 && y + i > 0 && y + i < 7)
{
enemyPos = ColLineToPos(x - 1, y + i);
nextPos = ColLineToPos(x - 2, y + 2 * i);
if ((_pieces[enemyPos] & ~King) == enemyColor && _pieces[nextPos] == EmptyPiece)
{
tempMoves = FindAllLegalSimpleAttackMoves(nextPos, currentPlayerColor, enemyColor);
moves.AppendToTail(AddNewGameMovement(new PlayerMove(currentPiecePos, nextPos), tempMoves));
}
}
if (moves.IsEmpty())
{
moves.push_back(new JavaList <object>());
}
return(moves);
}
private bool Any(JavaList <object> moves)
{
return(!moves.IsEmpty() && !((JavaList <object>)moves.peek_head()).IsEmpty());
}
private JavaList <object> FindAllLegalKingDiagonalAttackMoves(JavaList <object> lastPos, int currentPos, int playerColor, int enemyColor, int incX, int incY)
{
var x = PosToCol(currentPos);
var y = PosToBoardLine(currentPos);
var moves = new JavaList <object>();
var startPos = (int)lastPos.peek_head();
var i = x + incX;
var j = y + incY;
// Find enemy
while (i > 0 && i < 7 && j > 0 && j < 7 &&
(_pieces[ColLineToPos(i, j)] == EmptyPiece || ColLineToPos(i, j) == startPos))
{
i += incX;
j += incY;
}
if (i > 0 && i < 7 && j > 0 && j < 7 && (_pieces[ColLineToPos(i, j)] & ~King) == enemyColor &&
!lastPos.Contains(ColLineToPos(i, j)))
{
lastPos.push_back(ColLineToPos(i, j));
i += incX;
j += incY;
var saveI = i;
var saveJ = j;
JavaList <object> tempMoves;
while (i >= 0 && i <= 7 && j >= 0 && j <= 7 &&
(_pieces[ColLineToPos(i, j)] == EmptyPiece || ColLineToPos(i, j) == startPos))
{
int dir;
if (incX == 1 && incY == 1)
{
dir = LastDirectionLeftAbove;
}
else if (incX == -1 && incY == -1)
{
dir = LastDirectionRightBelow;
}
else if (incX == -1 && incY == 1)
{
dir = LastDirectionRightAbove;
}
else
{
dir = LastDirectionLeftBelow;
}
var tempPos = lastPos.Clone();
tempMoves = FindAllLegalKingAttackMoves(tempPos, ColLineToPos(i, j), dir, playerColor, enemyColor);
if (Any(tempMoves))
{
moves.AppendToTail(AddNewGameMovement(new PlayerMove(currentPos, ColLineToPos(i, j)), tempMoves));
}
i += incX;
j += incY;
}
lastPos.pop_back();
if (moves.IsEmpty())
{
i = saveI;
j = saveJ;
while (i >= 0 && i <= 7 && j >= 0 && j <= 7 &&
(_pieces[ColLineToPos(i, j)] == EmptyPiece || ColLineToPos(i, j) == startPos))
{
tempMoves = new JavaList <object>();
tempMoves.push_back(new PlayerMove(currentPos, ColLineToPos(i, j)));
moves.push_back(tempMoves);
i += incX;
j += incY;
}
}
}
return(moves);
}