//Deep array copy, copies every value individually to new gameboard.
private Piece[,] ArrayCopy(Piece[,] currentState)
{
var x = currentState.GetLength(0);
var y = currentState.GetLength(1);
var newState = new Piece[x, y];
for (var i = 0; i < x; i++)
{
for (var j = 0; j < y; j++)
{
newState[i, j] = currentState[i, j];
}
}
return newState;
}
//Add piece to board based on column and player, black = AI, white = human
//If picks a column then starts from the bottom and goes up each row to find the first empty spot.
public void AddToBoard(int col, bool isBlack)
{
var row = State.GetLength(1) - 1;
//Find deepest open spot
for (var i = row; i >= 0; i--)
{
if (State[i, col] == null)
{
var piece = new Piece(isBlack);
piece.Position.Row = i;
piece.Position.Col = col;
State[i, col] = piece;
break;
}
}
}
//Returns all adjacent pieces to a given piece, hardcoded the search, could have been better.
public static List<Tuple<bool, Piece>> GetAdjacentPieces(Piece piece, Board board)
{
var row = board.State.GetLength(0) - 1;
var col = board.State.GetLength(1) - 1;
var listOfAdjacentPieces = new List<Tuple<bool, Piece>>();
if (piece.Position.Row > 0) //Top Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(false, board.State[piece.Position.Row - 1, piece.Position.Col]));
}
if (piece.Position.Col < col && piece.Position.Row > 0) //TopRight Boundary Test
{
var adjPiece = board.State[piece.Position.Row - 1, piece.Position.Col + 1];
listOfAdjacentPieces.Add(Tuple.Create(true, adjPiece));
}
if (piece.Position.Col < col) //Right Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(false, board.State[piece.Position.Row, piece.Position.Col + 1]));
}
if (piece.Position.Row < row && piece.Position.Col < col) //BottomRight Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(true, board.State[piece.Position.Row + 1, piece.Position.Col + 1]));
}
if (piece.Position.Row < row)//Bottom Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(false, board.State[piece.Position.Row + 1, piece.Position.Col]));
}
if (piece.Position.Row < row && piece.Position.Col > 0) //BottomLeft Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(true, board.State[piece.Position.Row + 1, piece.Position.Col - 1]));
}
if (piece.Position.Col > 0) //Left Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(false, board.State[piece.Position.Row, piece.Position.Col - 1]));
}
if (piece.Position.Row > 0 && piece.Position.Col > 0)//TopLeft Boundary Test
{
listOfAdjacentPieces.Add(Tuple.Create(true, board.State[piece.Position.Row - 1, piece.Position.Col - 1]));
}
return listOfAdjacentPieces;
}
public Board(Piece[,] currentState)
{
State = ArrayCopy(currentState);
}
public Board(int width, int height)
{
State = new Piece[width, height];
Width = width;
Height = height;
}