private void RandomMove()
{
int i = 0, j = 0;
while (true)
{
i = random.Next(3);
j = random.Next(3);
if (Board[i, j].Equals(' '))
{
Board[i, j] = player2;
break;
}
}
int[] drawingCoordinates = GetDrawingCoordinates(i, j);
Point point = new Point(drawingCoordinates[0], drawingCoordinates[1]);
if (player2.Equals('X'))
{
Plays.Add(new PlayX(point, i, j, ColorX));
}
else
{
Plays.Add(new PlayO(point, i, j, ColorO));
}
XTurn = !XTurn;
}
public void AddPlay(int x, int y)
{
Point point = GetDrawingPoint(x, y);
if (point != Point.Empty)//Clicked on board (valid click)
{
int[] coordinates = GetBoardCoordinates(x, y);
if (!Over) //Game is not over
{
if (Board[coordinates[0], coordinates[1]].Equals(' ')) //Clicked spot is empty
{
if (XTurn)
{
Plays.Add(new PlayX(point, coordinates[0], coordinates[1], ColorX));
}
else
{
Plays.Add(new PlayO(point, coordinates[0], coordinates[1], ColorO));
}
AddToBoard(coordinates[0], coordinates[1]);
WinCheck();
if (!PVP && !Over)
{
if (Difficullty < 2)
{
RandomMove();
}
else
{
AIMove();
}
}
WinCheck();
if (!Over)
{
XTurn = !XTurn;
}
}
}
}
}
private void AIMove()
{
float bestScore = float.NegativeInfinity;
int moveI = -1, moveJ = -1;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
if (Board[i, j].Equals(' '))
{
Board[i, j] = player2;
float score = Minimax(Board, 0, false, float.NegativeInfinity, float.PositiveInfinity);
Board[i, j] = ' ';
if (score > bestScore)
{
bestScore = score;
moveI = i;
moveJ = j;
}
}
}
}
int[] drawingCoordinates = GetDrawingCoordinates(moveI, moveJ);
Point point = new Point(drawingCoordinates[0], drawingCoordinates[1]);
Board[moveI, moveJ] = player2;
if (player2.Equals('X'))
{
Plays.Add(new PlayX(point, moveI, moveJ, ColorX));
}
else
{
Plays.Add(new PlayO(point, moveI, moveJ, ColorO));
}
XTurn = !XTurn;
}