public void AddTurn(Turn turn)
{
turns.Add(turn);
}
/// <summary>
/// Detects open "2 in a rows"
/// </summary>
/// <param name="game"></param>
/// <returns>Amount of times 2 in a row with open ends is on board for current player</returns>
private int Detect2(Game game)
{
int count = 0;
Turn turn = game.Turn;
// Check horizontal
for (int y = 0; y < Game.NROWS; y++)
{
// Detect 3 with open right
for (int x = 0; x < Game.NCOLS - 2; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
// Find 3 in a row
if (game.Board[y, x] == game.Board[y, x + 1] &&
game.Board[y, x + 2] == -1) // Find open right
{
count++;
}
}
// Detect 3 with open left
for (int x = 1; x < Game.NCOLS - 1; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
// Find 3 in a row
if (game.Board[y, x] == game.Board[y, x + 1] &&
game.Board[y, x - 1] == -1) // Find open left
{
count++;
}
}
}
// Check vertical (open bottom cannot exist)
for (int y = 1; y < Game.NROWS - 1; y++)
{
for (int x = 0; x < Game.NCOLS; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
if (game.Board[y, x] == game.Board[y + 1, x] &&
game.Board[y - 1, x] == -1) // Open top
{
count++;
}
}
}
// Check diag 1 [\]
for (int y = 0; y < Game.NROWS - 2; y++)
{
for (int x = 0; x < Game.NCOLS - 2; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
if (game.Board[y, x] == game.Board[y + 1, x + 1] &&
game.Board[y + 2, x + 2] == -1)
{
count++;
}
}
}
for (int y = 1; y < Game.NROWS - 1; y++)
{
for (int x = 1; x < Game.NCOLS - 1; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
if (game.Board[y, x] == game.Board[y + 1, x + 1] &&
game.Board[y - 1, x - 1] == -1)
{
count++;
}
}
}
// Check diag 2 [/]
for (int y = 2; y < Game.NROWS; y++)
{
for (int x = 0; x < Game.NCOLS - 2; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
if (game.Board[y, x] == game.Board[y - 1, x + 1] &&
game.Board[y - 2, x + 2] == -1)
{
count++;
}
}
}
for (int y = 1; y < Game.NROWS - 1; y++)
{
for (int x = 1; x < Game.NCOLS - 1; x++)
{
if (game.Board[y, x] != (int)turn)
{
continue; // Don't check opponent or empty squares
}
if (game.Board[y, x] == game.Board[y - 1, x + 1] &&
game.Board[y + 1, x - 1] == -1)
{
count++;
}
}
}
return(count);
}