private void Form1_MouseClick(object sender, MouseEventArgs e)
{
Graphics g = CreateGraphics();
ApplyTransform(g);
PointF[] p = { new Point(e.X, e.Y) };
g.TransformPoints(CoordinateSpace.World,
CoordinateSpace.Device, p);
if (p[0].X < 0 || p[0].Y < 0) return;
int i = (int)(p[0].X / block);
int j = (int)(p[0].Y / block);
if (i > 2 || j > 2) return;
else if (grid[i, j] == CellSelection.N) //only allow setting empty cells
{
if (!gameOver)
{
if (e.Button == MouseButtons.Left)
{
grid[i, j] = CellSelection.X;
GameEngine engine = new GameEngine(board);
if (engine.checkWin() != 0)
{
if (engine.checkWin() == 1)
{
MessageBox.Show("You win!");
gameOver = true;
Invalidate();
}
else
{
MessageBox.Show("Computer wins");
gameOver = true;
Invalidate();
}
}
board[((3 * j) + i)] = 1; //1 means O
turncounter++;
}
if ((turncounter % 2 == 1) && !gameOver)//default turncounter = 0, player goes first
{
GameEngine engine = new GameEngine(board);
if (engine.checkWin() != 0)
{
if (engine.checkWin() == 1)
{
Invalidate();
MessageBox.Show("You win!");
gameOver = true;
Invalidate();
}
else
{
Invalidate();
MessageBox.Show("Computer wins");
gameOver = true;
Invalidate();
}
}
if (!gameOver && turncounter < 9)
{
Point move = engine.ComputerMove();
grid[move.X, move.Y] = CellSelection.O;
board[((3 * move.Y) + move.X)] = 2;
if (engine.checkWin() != 0)
{
if (engine.checkWin() == 1)
{
Invalidate();
MessageBox.Show("You win!");
gameOver = true;
Invalidate();
}
else
{
Invalidate();
MessageBox.Show("Computer wins");
gameOver = true;
Invalidate();
}
}
}
turncounter++;
}
}
else
{
turncounter = 0;
for (int ii = 0; ii < 3; ii++)
{
for (int jj = 0; jj < 3; jj++)
{
board[((3 * ii) + jj)] = 0;
grid[ii, jj] = CellSelection.N;
}
}
gameOver = false;
}
}
else
{
MessageBox.Show("Invalid Move");
}
Invalidate();
}
public bool winner(GameEngine board)
{
//check columns for computer wins
if (board.grid[0, 0] == GameEngine.CellSelection.O && board.grid[0, 1] == GameEngine.CellSelection.O && board.grid[0, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
if (board.grid[1, 0] == GameEngine.CellSelection.O && board.grid[1, 1] == GameEngine.CellSelection.O && board.grid[1, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
if (board.grid[2, 0] == GameEngine.CellSelection.O && board.grid[2, 1] == GameEngine.CellSelection.O && board.grid[2, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
//check rows for computer wins
if (board.grid[0, 0] == GameEngine.CellSelection.O && board.grid[1, 0] == GameEngine.CellSelection.O && board.grid[2, 0] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
if (board.grid[0, 1] == GameEngine.CellSelection.O && board.grid[1, 1] == GameEngine.CellSelection.O && board.grid[2, 1] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
if (board.grid[0, 2] == GameEngine.CellSelection.O && board.grid[1, 2] == GameEngine.CellSelection.O && board.grid[2, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
//check diags for computer wins
if (board.grid[0, 0] == GameEngine.CellSelection.O && board.grid[1, 1] == GameEngine.CellSelection.O && board.grid[2, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
if (board.grid[2, 0] == GameEngine.CellSelection.O && board.grid[1, 1] == GameEngine.CellSelection.O && board.grid[0, 2] == GameEngine.CellSelection.O)
{
pcWin = true;
MessageBox.Show("Computer wins");
return(pcWin);
}
//check rows for user wins
if (board.grid[0, 0] == GameEngine.CellSelection.X && board.grid[0, 1] == GameEngine.CellSelection.X && board.grid[0, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (board.grid[1, 0] == GameEngine.CellSelection.X && board.grid[1, 1] == GameEngine.CellSelection.X && board.grid[1, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (board.grid[2, 0] == GameEngine.CellSelection.X && board.grid[2, 1] == GameEngine.CellSelection.X && board.grid[2, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
//check rows for computer wins
if (board.grid[0, 0] == GameEngine.CellSelection.X && board.grid[1, 0] == GameEngine.CellSelection.X && board.grid[2, 0] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (board.grid[0, 1] == GameEngine.CellSelection.X && board.grid[1, 1] == GameEngine.CellSelection.X && board.grid[2, 1] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (board.grid[0, 2] == GameEngine.CellSelection.X && board.grid[1, 2] == GameEngine.CellSelection.X && board.grid[2, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
//check diags for computer wins
if (board.grid[0, 0] == GameEngine.CellSelection.X && board.grid[1, 1] == GameEngine.CellSelection.X && board.grid[2, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (board.grid[2, 0] == GameEngine.CellSelection.X && board.grid[1, 1] == GameEngine.CellSelection.X && board.grid[0, 2] == GameEngine.CellSelection.X)
{
userWin = true;
MessageBox.Show("User wins");
return(userWin);
}
if (turns >= 5)
{
Draw = true;
MessageBox.Show("DRAW!");
return(Draw);
}
//default
return(false);
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
game = new GameEngine();
computerStartsToolStripMenuItem.Enabled = true;
Invalidate();
}
public void pcMove(GameEngine board)
{
bool currentmove = true;
//if the pc goes first, choose a random location to begin with
if (firstPCTurn)
{
Random rand = new Random();
int randomNum = rand.Next(0, 3);
board.grid[randomNum, randomNum] = GameEngine.CellSelection.O;
firstPCTurn = false;
}
else
{
//rows
for (int j = 0; j < 3; ++j)
{
//columns
for (int i = 0; i < 3; ++i)
{
//check for O's
if (board.grid[i, j] == GameEngine.CellSelection.O)
{
if (i == 0 && j == 0)
{
row0_o++;
col0_o++;
diag0_o++;
}
if (i == 1 && j == 0)
{
row0_o++;
col1_o++;
}
if (i == 2 && j == 0)
{
row0_o++;
col2_o++;
diag1_o++;
}
if (i == 0 && j == 1)
{
row1_o++;
col0_o++;
}
if (i == 1 && j == 1)
{
row1_o++;
col1_o++;
diag0_o++;
diag1_o++;
}
if (i == 2 && j == 1)
{
row1_o++;
col2_o++;
}
if (i == 0 && j == 2)
{
row2_o++;
col0_o++;
diag1_o++;
}
if (i == 1 && j == 2)
{
row2_o++;
col1_o++;
}
if (i == 2 && j == 2)
{
row2_o++;
col2_o++;
diag0_o++;
}
}
//check for X's
if (board.grid[i, j] == GameEngine.CellSelection.X)
{
if (i == 0 && j == 0)
{
row0_x++;
col0_x++;
diag0_x++;
}
if (i == 1 && j == 0)
{
row0_x++;
col1_x++;
}
if (i == 2 && j == 0)
{
row0_x++;
col2_x++;
diag1_x++;
}
if (i == 0 && j == 1)
{
row1_x++;
col0_x++;
}
if (i == 1 && j == 1)
{
row1_x++;
col1_x++;
diag0_x++;
diag1_x++;
}
if (i == 2 && j == 1)
{
row1_x++;
col2_x++;
}
if (i == 0 && j == 2)
{
row2_x++;
col0_x++;
diag1_x++;
}
if (i == 1 && j == 2)
{
row2_x++;
col1_x++;
}
if (i == 2 && j == 2)
{
row2_x++;
col2_x++;
diag0_x++;
}
}
}
}
//pc moves
for (int i = 0; i < 3; ++i)
{
for (int j = 0; j < 3; ++j)
{
if ((diag0_o == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag0_o == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag0_o == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//diags 1
if ((diag1_o == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag1_o == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag1_o == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_o == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_o == 2 && board.grid[1, 0] == GameEngine.CellSelection.N))
{
board.grid[1, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_o == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//row1
if ((row1_o == 2 && board.grid[0, 1] == GameEngine.CellSelection.N))
{
board.grid[0, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row1_o == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row1_o == 2 && board.grid[2, 1] == GameEngine.CellSelection.N))
{
board.grid[2, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//row2
if ((row2_o == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row2_o == 2 && board.grid[1, 2] == GameEngine.CellSelection.N))
{
board.grid[1, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row2_o == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col 0
if ((col0_o == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col0_o == 2 && board.grid[0, 1] == GameEngine.CellSelection.N))
{
board.grid[0, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col0_o == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col1
if ((col1_o == 2 && board.grid[1, 0] == GameEngine.CellSelection.N))
{
board.grid[1, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col1_o == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col1_o == 2 && board.grid[1, 2] == GameEngine.CellSelection.N))
{
board.grid[1, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col2
if ((col2_o == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col2_o == 2 && board.grid[2, 1] == GameEngine.CellSelection.N))
{
board.grid[2, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col2_o == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//defense
if ((diag0_x == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag0_x == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag0_x == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//diags 1
if ((diag1_x == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag1_x == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((diag1_x == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_x == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_x == 2 && board.grid[1, 0] == GameEngine.CellSelection.N))
{
board.grid[1, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row0_x == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//row1
if ((row1_x == 2 && board.grid[0, 1] == GameEngine.CellSelection.N))
{
board.grid[0, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row1_x == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row1_x == 2 && board.grid[2, 1] == GameEngine.CellSelection.N))
{
board.grid[2, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//row2
if ((row2_x == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row2_x == 2 && board.grid[1, 2] == GameEngine.CellSelection.N))
{
board.grid[1, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((row2_x == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col 0
if ((col0_x == 2 && board.grid[0, 0] == GameEngine.CellSelection.N))
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col0_x == 2 && board.grid[0, 1] == GameEngine.CellSelection.N))
{
board.grid[0, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col0_x == 2 && board.grid[0, 2] == GameEngine.CellSelection.N))
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col1
if ((col1_x == 2 && board.grid[1, 0] == GameEngine.CellSelection.N))
{
board.grid[1, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col1_x == 2 && board.grid[1, 1] == GameEngine.CellSelection.N))
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col1_x == 2 && board.grid[1, 2] == GameEngine.CellSelection.N))
{
board.grid[1, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//col2
if ((col2_x == 2 && board.grid[2, 0] == GameEngine.CellSelection.N))
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col2_x == 2 && board.grid[2, 1] == GameEngine.CellSelection.N))
{
board.grid[2, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if ((col2_x == 2 && board.grid[2, 2] == GameEngine.CellSelection.N))
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
//moves that occur before a winning move
if (board.grid[1, 1] == GameEngine.CellSelection.N)
{
board.grid[1, 1] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if (board.grid[0, 0] == GameEngine.CellSelection.N)
{
board.grid[0, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if (board.grid[0, 2] == GameEngine.CellSelection.N)
{
board.grid[0, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if (board.grid[2, 0] == GameEngine.CellSelection.N)
{
board.grid[2, 0] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
if (board.grid[2, 2] == GameEngine.CellSelection.N)
{
board.grid[2, 2] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
// default move
if (board.grid[j, i] == GameEngine.CellSelection.N)
{
board.grid[i, j] = GameEngine.CellSelection.O;
currentmove = false;
break;
}
}
if (!currentmove)
{
break;
}
}
}
if (this.winner(board))
{
gameDone = true;
return;
}
//reset the variables so they can be counted correctly
row0_o = 0;
row1_o = 0;
row2_o = 0;
col0_o = 0;
col1_o = 0;
col2_o = 0;
diag0_o = 0;
diag1_o = 0;
row0_x = 0;
row1_x = 0;
row2_x = 0;
col0_x = 0;
col1_x = 0;
col2_x = 0;
diag0_x = 0;
diag1_x = 0;
board.pcTurn = false;
}
public Form1()
{
InitializeComponent();
ResizeRedraw = true;
game = new GameEngine();
}