private int EvaluateDiagonalLines(Board board, int evaluation)
{
int diagonalEvaluation = evaluation;
Player lineState = board.GetPiece(0, 0);
if(lineState == board.CurrentPlayer)
{
diagonalEvaluation++;
}
else if(lineState != Player.None)
{
diagonalEvaluation--;
}
int continuationFactor = 1;
for(int x = 1; x < Board.Dimension; x++)
{
Player currentPiece = board.GetPiece(x, x);
if(currentPiece == board.CurrentPlayer)
{
diagonalEvaluation++;
}
else if(currentPiece != Player.None)
{
diagonalEvaluation--;
}
if(currentPiece == board.GetPiece(x - 1, x - 1))
{
continuationFactor = this.UpdateContinuation(continuationFactor);
if(currentPiece == board.CurrentPlayer)
{
diagonalEvaluation += continuationFactor;
}
else if(currentPiece != Player.None)
{
diagonalEvaluation -= continuationFactor;
}
}
else
{
lineState = Player.None;
continuationFactor = 1;
}
}
if(lineState != Player.None && lineState != board.CurrentPlayer)
{
diagonalEvaluation = LosingLine;
}
else
{
if(lineState == board.CurrentPlayer)
{
diagonalEvaluation = WinningLine;
}
else
{
lineState = board.GetPiece(0, Board.Dimension - 1);
if(lineState == board.CurrentPlayer)
{
diagonalEvaluation++;
}
else if(lineState != Player.None)
{
diagonalEvaluation--;
}
for(int x = 1; x < Board.Dimension; x++)
{
Player currentPiece = board.GetPiece(x, Board.Dimension - 1 - x);
if(currentPiece == board.CurrentPlayer)
{
diagonalEvaluation++;
}
else if(currentPiece != Player.None)
{
diagonalEvaluation--;
}
if(currentPiece == board.GetPiece(x - 1, Board.Dimension - x))
{
continuationFactor = this.UpdateContinuation(continuationFactor);
if(currentPiece == board.CurrentPlayer)
{
diagonalEvaluation += continuationFactor;
}
else if(currentPiece != Player.None)
{
diagonalEvaluation -= continuationFactor;
}
}
else
{
lineState = Player.None;
continuationFactor = 1;
}
}
if(lineState == board.CurrentPlayer)
{
diagonalEvaluation = WinningLine;
}
else if(lineState != Player.None)
{
diagonalEvaluation = LosingLine;
}
}
}
return diagonalEvaluation;
}
private int EvaluateVerticalLines(Board board, int evaluation)
{
int verticalEvaluation = evaluation;
bool hasWinningLine = false, hasLosingLine = false;
for(int x = 0; x < Board.Dimension; x++)
{
Player lineState = board.GetPiece(x, 0);
if(lineState == board.CurrentPlayer)
{
verticalEvaluation++;
}
else if(lineState != Player.None)
{
verticalEvaluation--;
}
int continuationFactor = 1;
for(int y = 1; y < Board.Dimension; y++)
{
Player currentPiece = board.GetPiece(x, y);
if(currentPiece == board.CurrentPlayer)
{
verticalEvaluation++;
}
else if(currentPiece != Player.None)
{
verticalEvaluation--;
}
if(currentPiece == board.GetPiece(x, y - 1))
{
continuationFactor = this.UpdateContinuation(continuationFactor);
if(currentPiece == board.CurrentPlayer)
{
verticalEvaluation += continuationFactor;
}
else if(currentPiece != Player.None)
{
verticalEvaluation -= continuationFactor;
}
}
else
{
lineState = Player.None;
continuationFactor = 1;
}
}
if(lineState == board.CurrentPlayer)
{
hasWinningLine = true;
break;
}
else if(lineState != Player.None)
{
hasLosingLine = true;
break;
}
}
if(hasWinningLine == true && hasLosingLine == false)
{
verticalEvaluation = WinningLine;
}
else if(hasLosingLine == true)
{
verticalEvaluation = LosingLine;
}
return verticalEvaluation;
}
