// move soldier to the target position and change the last position to empty
public void basicMove(Coords start, Coords end)
{
SoldierBase temp = board[start.getY(), start.getX()];
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
temp.setY(end.getY());
temp.setX(end.getX());
board[end.getY(), end.getX()] = temp;
board[end.getY(), end.getX()].isMoved(true);
}
public void doEnPassant(Coords start, Coords end)
{
basicMove(start, end);
if (WhiteTurn())
{
removeObj(new Coords(end.getY() + 1, end.getX()));
}
else
{
removeObj(new Coords(end.getY() - 1, end.getX()));
}
}
public bool validPawnPromotion(Coords start, Coords end)
{
if (WhiteTurn() && GetSoldierByPosition(start).getType() == "P" && end.getY() == 0)
{
return(true);
}
if (!WhiteTurn() && GetSoldierByPosition(start).getType() == "P" && end.getY() == 7)
{
return(true);
}
return(false);
}
public bool StraightLines(ChessBoard board, Coords start, Coords end)
{
if (start.getX() == end.getX())
{
if (start.getY() < end.getY())
{
for (int i = start.getY() + 1; i < end.getY(); i++)
{
if (board.GetSoldierByPosition(new Coords(i, start.getX())).getColor() != " ")
{
return(false); // If there is one (not empty) movement isn't allowed
}
}
}
else
{
for (int i = start.getY() - 1; i > end.getY(); i--)
{
if (board.GetSoldierByPosition(new Coords(i, start.getX())).getColor() != " ")
{
return(false);
}
}
}
return(canIeat(board, start, end) || board.GetSoldierByPosition(end).getColor() == " ");
}
else if (start.getY() == end.getY())
{
if (start.getX() < end.getX())
{
for (int i = start.getX() + 1; i < end.getX(); i++)
{
if (board.GetSoldierByPosition(new Coords(start.getY(), i)).getColor() != " ")
{
return(false);
}
}
}
else
{
for (int i = start.getX() - 1; i > end.getX(); i--)
{
if (board.GetSoldierByPosition(new Coords(start.getY(), i)).getColor() != " ")
{
return(false);
}
}
}
return(canIeat(board, start, end) || board.GetSoldierByPosition(end).getColor() == " ");
}
return(false);
}
public bool DiagonalMoves(ChessBoard board, Coords start, Coords end)
{
if (Math.Abs(start.getX() - end.getX()) == Math.Abs(start.getY() - end.getY()))
{
if (start.getY() > end.getY() && start.getX() > end.getX())
{//y--x--
for (int tempStartY = start.getY() - 1, tempStartX = start.getX() - 1; tempStartY > end.getY() && tempStartX > end.getX(); tempStartY--, tempStartX--)
{
if (board.GetSoldierByPosition(new Coords(tempStartY, tempStartX)).getColor() != " ")
{
return(false); // If there is one (not empty) movement isn't allowed
}
}
}
else if (start.getY() > end.getY() && start.getX() < end.getX())
{//y--x++
for (int tempStartY = start.getY() - 1, tempStartX = start.getX() + 1; tempStartY > end.getY() && tempStartX < end.getX(); tempStartY--, tempStartX++)
{
if (board.GetSoldierByPosition(new Coords(tempStartY, tempStartX)).getColor() != " ")
{
return(false); // If there is one (not empty) movement isn't allowed
}
}
}
else if (start.getY() < end.getY() && start.getX() < end.getX())
{//y++x++
for (int tempStartY = start.getY() + 1, tempStartX = start.getX() + 1; tempStartY > end.getY() && tempStartX < end.getX(); tempStartY++, tempStartX++)
{
if (board.GetSoldierByPosition(new Coords(tempStartY, tempStartX)).getColor() != " ")
{
return(false); // If there is one (not empty) movement isn't allowed
}
}
}
else if (start.getY() < end.getY() && start.getX() > end.getX())
{//y++x--
for (int tempStartY = start.getY() + 1, tempStartX = start.getX() - 1; tempStartY > end.getY() && tempStartX < end.getX(); tempStartY++, tempStartX--)
{
if (board.GetSoldierByPosition(new Coords(tempStartY, tempStartX)).getColor() != " ")
{
return(false); // If there is one (not empty) movement isn't allowed
}
}
}
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
return(false);
}
//if input between 0 to 7
public bool ValidInput(Coords start, Coords end)
{
if (start.getY() >= 0 && start.getY() <= 7 &&
start.getX() >= 0 && start.getX() <= 7 &&
end.getY() >= 0 && end.getY() <= 7 &&
end.getX() >= 0 && end.getX() <= 7)
{
row = start.getY();
column = start.getX();
targetRow = end.getY();
targetColumn = end.getX();
return(true);
}
return(false);
}
public bool validEnPassant(Coords start, Coords end)
{
int direction;
if (WhiteTurn())
{
direction = -1;
}
else
{
direction = 1;
}
if (((GetValidIndex(start.getX() + 1, false) == end.getX() || GetValidIndex(start.getX() - 1, true) == end.getX()) &&
start.getY() + direction == end.getY() &&
GetSoldierByPosition(end).getColor() == " "))
{
if (WhiteTurn() && start.getY() == 3 &&
GetSoldierByPosition(start).getType() == "P" &&
GetSoldierByPosition(start).getColor() == "W" &&
board[3, end.getX()].getType() == "P" &&
board[3, end.getX()].getColor() == "B")
{
if (board[end.getY() - direction, end.getX()] is PawnPiece &&
((PawnPiece)board[end.getY() - direction, end.getX()]).getMovedTwoSteps() == true)
{
return(true);
}
}
if (!WhiteTurn() && start.getY() == 4 &&
GetSoldierByPosition(start).getType() == "P" &&
GetSoldierByPosition(start).getColor() == "W" &&
board[4, end.getX()].getType() == "P" &&
board[4, end.getX()].getColor() == "B")
{
if (board[end.getY() - direction, end.getX()] is PawnPiece &&
((PawnPiece)board[end.getY() - direction, end.getX()]).getMovedTwoSteps() == true)
{
return(true);
}
}
}
return(false);
}
//Castling
public bool validCastling(Coords start, Coords end)
{
if (GetSoldierByPosition(start).getType() == "K" && GetSoldierByPosition(start).getMoved() == false)
{
//2 spaces castling
if (start.getX() < end.getX())
{
//clear pass? then move the rook
if (GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() + 1, false))).getType() == " " &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() + 2, false))).getType() == " " &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() + 3, false))).getType() == "R" &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() + 3, false))).getMoved() == false &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() + 2, false))) ==
GetSoldierByPosition(new Coords(end.getY(), end.getX())) &&
!(inCheck(FindKing())))
{
return(true);
}
}
else
{
//clear pass? then move the rook
if (GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 1, true))).getType() == " " &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 2, true))).getType() == " " &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 3, true))).getType() == " " &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 4, true))).getType() == "R" &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 4, true))).getMoved() == false &&
GetSoldierByPosition(new Coords(start.getY(), GetValidIndex(start.getX() - 2, true))) ==
GetSoldierByPosition(new Coords(end.getY(), end.getX())) &&
!(inCheck(FindKing())))
{
return(true);
}
}
}
return(false);
}
public bool PawnMove(ChessBoard board, Coords start, Coords end)
{
int direction;
if (board.WhiteTurn())
{
direction = -1;
}
else
{
direction = 1;
}
if (!this.getMoved() &&//first move 2 steps
start.getX() == end.getX() &&
start.getY() + (2 * direction) == end.getY() &&
board.GetSoldierByPosition(new Coords(start.getY() + (2 * direction), end.getX())).getType() == " ")
{
firstMoveTwoSteps = true;
return(true);
}
if (start.getX() == end.getX() &&//move 1 step
start.getY() + direction == end.getY() &&
board.GetSoldierByPosition(new Coords(start.getY() + direction, end.getX())).getType() == " ")
{
return(true);
}
if ((start.getX() + 1 == end.getX() || start.getX() - 1 == end.getX()) &&//eating
start.getY() + direction == end.getY() &&
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor() &&
board.GetSoldierByPosition(end).getColor() != " ")
{
return(canIeat(board, start, end));
}
if (board.validEnPassant(start, end))//en passant
{
return(true);
}
return(false);
}
//possible move to cancel check?
public bool PossibleToCancelCheck(Coords start, Coords end)
{
bool movePosition = false;
if (GetSoldierByPosition(start).getMoved())
{
movePosition = true;
}
else
{
movePosition = false;
}
SoldierBase tempStart;
SoldierBase tempEnd;
if (GetSoldierByPosition(start).validMove(this, start, end))
{
tempStart = (GetSoldierByPosition(start));
tempEnd = (GetSoldierByPosition(end));
basicMove(start, end);
tempStart.setY(start.getY());
tempStart.setX(start.getX());
if (!(inCheck(FindKing())))
{
board[start.getY(), start.getX()] = tempStart;
board[end.getY(), end.getX()] = tempEnd;
board[start.getY(), start.getX()].isMoved(movePosition);
return(true);
}
else
{
board[start.getY(), start.getX()] = tempStart;
board[end.getY(), end.getX()] = tempEnd;
board[start.getY(), start.getX()].isMoved(movePosition);
}
}
return(false);
}
public bool KingMoves(ChessBoard board, Coords start, Coords end)
{
if (start.getX() + 1 == end.getX() && start.getY() + 1 == end.getY() &&//x+1//y+1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() + 1 == end.getX() && start.getY() - 1 == end.getY() &&//x+1//y-1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 1 == end.getX() && start.getY() + 1 == end.getY() &&//x-1//y+1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 1 == end.getX() && start.getY() - 1 == end.getY() &&//x-1//y-1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}//
if (start.getX() == end.getX() && start.getY() - 1 == end.getY() &&//x//y-1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() == end.getX() && start.getY() + 1 == end.getY() &&//x//y+1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 1 == end.getX() && start.getY() == end.getY() &&//x-1//y
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() + 1 == end.getX() && start.getY() == end.getY() &&//x+1//y
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (board.validCastling(start, end))
{
return(true);
}
return(false);
}
public bool rMoves(ChessBoard board, Coords start, Coords end)
{
if (start.getX() + 2 == end.getX() && start.getY() + 1 == end.getY() &&//x+2//y+1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() + 2 == end.getX() && start.getY() - 1 == end.getY() &&//x+2//y-1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 2 == end.getX() && start.getY() + 1 == end.getY() &&//x-2//y+1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 2 == end.getX() && start.getY() - 1 == end.getY() &&//x-2//y-1
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 1 == end.getX() && start.getY() - 2 == end.getY() &&//x-1//y-2
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() + 1 == end.getX() && start.getY() - 2 == end.getY() &&//x+1//y-2
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() - 1 == end.getX() && start.getY() + 2 == end.getY() &&//x-1//y+2
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
if (start.getX() + 1 == end.getX() && start.getY() + 2 == end.getY() &&//x+1//y+2
board.GetSoldierByPosition(start).getColor() != board.GetSoldierByPosition(end).getColor())
{
return(board.GetSoldierByPosition(end).getColor() == " " || canIeat(board, start, end));
}
return(false);
}
public void doCastlingMove(Coords start, Coords end)
{
//temp soldier for the king to clear the move for the rook
if (start.getX() < end.getX() && GetSoldierByPosition(start).getColor() == "W")
{
SoldierBase tempKing = board[start.getY(), start.getX()];
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
basicMove(new Coords(7, 7), new Coords(7, 5));
tempKing.setY(start.getY());
tempKing.setX(start.getX() + 2);
board[start.getY(), start.getX() + 2] = tempKing;
}
else if (start.getX() < end.getX() && GetSoldierByPosition(start).getColor() == "B")
{
SoldierBase tempKing = board[start.getY(), start.getX()];
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
basicMove(new Coords(0, 7), new Coords(0, 5));
tempKing.setY(start.getY());
tempKing.setX(start.getX() + 2);
board[start.getY(), start.getX() + 2] = tempKing;
}
else if (start.getX() > end.getX() && GetSoldierByPosition(start).getColor() == "W")
{
SoldierBase tempKing = board[start.getY(), start.getX()];
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
basicMove(new Coords(7, 0), new Coords(7, 3));
tempKing.setY(start.getY());
tempKing.setX(start.getX() - 2);
board[start.getY(), start.getX() - 2] = tempKing;
}
else if (start.getX() > end.getX() && GetSoldierByPosition(start).getColor() == "B")
{
SoldierBase tempKing = board[start.getY(), start.getX()];
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
basicMove(new Coords(0, 0), new Coords(0, 3));
tempKing.setY(start.getY());
tempKing.setX(start.getX() - 2);
board[end.getY(), start.getX() - 2] = tempKing;
}
}
// get the soldier type
public SoldierBase GetSoldierByPosition(Coords start)
{
return(board[start.getY(), start.getX()]);
}
public void doPromotion(Coords start, Coords end)
{
removeObj(start);
board[end.getY(), end.getX()] = new QueenPiece("Q", "W", false, start.getY(), start.getX());
}
public void removeObj(Coords start)
{
board[start.getY(), start.getX()] = new EmptySoldier(" ", " ", false, start.getY(), start.getX());
}
