public void ResetBoard()
{
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
chessboard[i, j] = new cell();
}
}
chessboard[0, 0].state = cell.status.BlackRook;
chessboard[0, 1].state = cell.status.BlackKnight;
chessboard[0, 2].state = cell.status.BlackBishop;
chessboard[0, 3].state = cell.status.BlackQueen;
chessboard[0, 4].state = cell.status.BlackKing;
chessboard[0, 5].state = cell.status.BlackBishop;
chessboard[0, 6].state = cell.status.BlackKnight;
chessboard[0, 7].state = cell.status.BlackRook;
chessboard[7, 0].state = cell.status.WhiteRook;
chessboard[7, 1].state = cell.status.WhiteKnight;
chessboard[7, 2].state = cell.status.WhiteBishop;
chessboard[7, 3].state = cell.status.WhiteQueen;
chessboard[7, 4].state = cell.status.WhiteKing;
chessboard[7, 5].state = cell.status.WhiteBishop;
chessboard[7, 6].state = cell.status.WhiteKnight;
chessboard[7, 7].state = cell.status.WhiteRook;
for (int j = 0; j < 8; j++)
{
chessboard[1, j].state = cell.status.BlackPawn;
chessboard[6, j].state = cell.status.WhitePawn;
}
for (int i = 0; i < 6; i++) // reset castling restrictions
{
a1h1e1a8h8e8[i] = true;
}
history.Clear();
white_move = true;
show();
}
public void move(string coords)
{
if (coords.Length != 4)
{
Console.WriteLine("Invalid command");
return;
}
int x1, y1, x2, y2;
x1 = Convert.ToInt32(coords[0] - 'a');
y1 = 8 - Convert.ToInt32(coords[1] - '0');
x2 = Convert.ToInt32(coords[2] - 'a');
y2 = 8 - Convert.ToInt32(coords[3] - '0');
if (legal_move(x1, y1, x2, y2))
{
if (y1 == 0) // if rooks or kings moved
{
if (x1 == 0)
{
a1h1e1a8h8e8[3] = false;
}
else if (x1 == 4)
{
a1h1e1a8h8e8[5] = false;
}
else if (x1 == 7)
{
a1h1e1a8h8e8[4] = false;
}
}
if (y1 == 7)
{
if (x1 == 0)
{
a1h1e1a8h8e8[0] = false;
}
else if (x1 == 4)
{
a1h1e1a8h8e8[2] = false;
}
else if (x1 == 7)
{
a1h1e1a8h8e8[1] = false;
}
}
if (y1 == white_king[0] && x1 == white_king[1]) // looking for castling
{
if (x2 - x1 == 2) // white 0-0
{
chessboard[7, 5].state = cell.status.BlackRook;
chessboard[7, 7].state = cell.status.empty;
a1h1e1a8h8e8[1] = false;
}
if (x2 - x1 == -2) // white 0-0-0
{
chessboard[7, 3].state = cell.status.BlackRook;
chessboard[7, 0].state = cell.status.empty;
a1h1e1a8h8e8[0] = false;
}
}
if (y1 == black_king[0] && x1 == black_king[1])
{
if (x2 - x1 == 2) // black 0-0
{
chessboard[0, 5].state = cell.status.WhiteRook;
chessboard[0, 7].state = cell.status.empty;
a1h1e1a8h8e8[4] = false;
}
if (x2 - x1 == -2) // black 0-0-0
{
chessboard[0, 3].state = cell.status.WhiteRook;
chessboard[0, 0].state = cell.status.empty;
a1h1e1a8h8e8[3] = false;
}
}
movement temp = new movement();
temp.square = coords;
temp.beaten = chessboard[y2, x2].state;
history.Add(temp);
cell temp_cell = new cell();
temp_cell.state = chessboard[y1, x1].state;
chessboard[y2, x2] = temp_cell;
chessboard[y1, x1].state = cell.status.empty;
for (int i = 0; i < 8; i++) // searching for the kings
{
for (int j = 0; j < 8; j++)
{
if (chessboard[i, j].state == cell.status.BlackKing)
{
black_king[0] = i;
black_king[1] = j;
}
if (chessboard[i, j].state == cell.status.WhiteKing)
{
white_king[0] = i;
white_king[1] = j;
}
}
}
if (white_move)
{
white_move = !white_move;
if (under_attack(white_king[0], white_king[1], true)) // if king is under attack after move, we reverse it
{
reverse();
Console.WriteLine("Illegal move: king under attack");
return;
}
}
else
{
white_move = !white_move;
if (under_attack(black_king[0], black_king[1], false))
{
reverse();
Console.WriteLine("Illegal move: king under attack");
return;
}
}
if (y2 == 0 && chessboard[y2, x2].state == cell.status.WhitePawn) // white pawn promotion
{
Console.WriteLine("Promote to what? (Queen, Rook, Bishop or Knight)");
while (chessboard[y2, x2].state == cell.status.WhitePawn)
{
string answer = Console.ReadLine().ToLower();
switch (answer)
{
case "queen":
chessboard[y2, x2].state = cell.status.WhiteQueen;
break;
case "rook":
chessboard[y2, x2].state = cell.status.WhiteRook;
break;
case "bishop":
chessboard[y2, x2].state = cell.status.WhiteBishop;
break;
case "knight":
chessboard[y2, x2].state = cell.status.WhiteKnight;
break;
default:
Console.WriteLine("No such piece");
break;
}
}
}
if (y2 == 7 && chessboard[y2, x2].state == cell.status.BlackPawn) // black pawn promotion
{
Console.WriteLine("Promote to what? (Queen, Rook, Bishop or Knight)");
while (chessboard[y2, x2].state == cell.status.BlackPawn)
{
string answer = Console.ReadLine().ToLower();
switch (answer)
{
case "queen":
chessboard[y2, x2].state = cell.status.BlackQueen;
break;
case "rook":
chessboard[y2, x2].state = cell.status.BlackRook;
break;
case "bishop":
chessboard[y2, x2].state = cell.status.BlackBishop;
break;
case "knight":
chessboard[y2, x2].state = cell.status.BlackKnight;
break;
default:
Console.WriteLine("No such piece");
break;
}
}
}
show();
}
else
{
Console.WriteLine("Illegal move!");
}
}