// IS CENTRE OF THREE IN A ROW
public static Tuple <int, int> IsCentreOfThree(GameBoard_SYSTST <counters> board, counters us)
{
for (int x = 1; x <= 7; x++)
{
for (int y = 1; y <= 7; y++)
{
// check whether position piece at [x,y] has the same piece as neighbour
for (int xx = 0; xx <= 1; xx++)
{
for (int yy = 0; yy <= 1; yy++)
{
if (yy == 0 && xx == 0)
{
continue;
}
if (board[x, y] == us &&
board[x, y] == board[x + xx, y + yy] &&
board[x, y] == board[x - xx, y - yy])
{
return(new Tuple <int, int>(x, y));
}
}
}
}
}
return(new Tuple <int, int>(0, 0));
}
public AIPlayer_SYSTST(counters _counter) : base(_counter)
{
}
// IS RIGHT OF THE TWO IN ROW
public static Tuple <int, int> IsRightofTwo(GameBoard_SYSTST <counters> board, counters us)
{
for (int x = 1; x <= 7; x++)
{
for (int y = 1; y <= 7; y++)
{
// check whether position piece at [x,y] has the same piece as neighbour
for (int xx = -1; xx <= 7; xx++)
{
for (int yy = -1; yy <= 7; yy++)
{
if (yy == 0 && xx == 0)
{
continue;
}
if (board[x, y] == us && board[x, y] == board[x + xx, y + yy])
{
// two in a row in centre should give higher score
return(new Tuple <int, int>(x + xx, y + yy));
}
}
}
}
}
return(new Tuple <int, int>(0, 0));
}
/*
* ----------------------------------------------------------------------------------------------------------------
* Win -
* --------------------------------------------------------------------------------------------------------------------------
* The boolean method returns true or false wherever there is a three in a row (winning position) existing on the entire board.
* --------------------------------------------------------------------------------------------------------------------------
*/
// DETERMINE IF Player_TPL HAS WON
public bool Win(GameBoard_TPL <counters> board, counters counter)
{
if (
//HORIZONTAL
(board[1, 1] == counter && board[2, 1] == counter && board[3, 1] == counter && board[4, 1] == counter && board[5, 1] == counter) ||
(board[2, 1] == counter && board[3, 1] == counter && board[4, 1] == counter && board[5, 1] == counter && board[6, 1] == counter) ||
(board[3, 1] == counter && board[4, 1] == counter && board[5, 1] == counter && board[6, 1] == counter && board[7, 1] == counter) ||
(board[1, 2] == counter && board[2, 2] == counter && board[3, 2] == counter && board[4, 2] == counter && board[5, 2] == counter) ||
(board[2, 2] == counter && board[3, 2] == counter && board[4, 2] == counter && board[5, 2] == counter && board[6, 2] == counter) ||
(board[3, 2] == counter && board[4, 2] == counter && board[5, 2] == counter && board[6, 2] == counter && board[7, 2] == counter) ||
(board[1, 3] == counter && board[2, 3] == counter && board[3, 3] == counter && board[4, 3] == counter && board[5, 3] == counter) ||
(board[2, 3] == counter && board[3, 3] == counter && board[4, 3] == counter && board[5, 3] == counter && board[6, 3] == counter) ||
(board[3, 3] == counter && board[4, 3] == counter && board[5, 3] == counter && board[6, 3] == counter && board[7, 3] == counter) ||
(board[1, 4] == counter && board[2, 4] == counter && board[3, 4] == counter && board[4, 4] == counter && board[5, 4] == counter) ||
(board[2, 4] == counter && board[3, 4] == counter && board[4, 4] == counter && board[5, 4] == counter && board[6, 4] == counter) ||
(board[3, 4] == counter && board[4, 4] == counter && board[5, 4] == counter && board[6, 4] == counter && board[7, 4] == counter) ||
(board[1, 5] == counter && board[2, 5] == counter && board[3, 5] == counter && board[4, 5] == counter && board[5, 5] == counter) ||
(board[2, 5] == counter && board[3, 5] == counter && board[4, 5] == counter && board[5, 5] == counter && board[6, 5] == counter) ||
(board[3, 5] == counter && board[4, 5] == counter && board[5, 5] == counter && board[6, 5] == counter && board[7, 5] == counter) ||
(board[1, 6] == counter && board[2, 6] == counter && board[3, 6] == counter && board[4, 6] == counter && board[5, 6] == counter) ||
(board[2, 6] == counter && board[3, 6] == counter && board[4, 6] == counter && board[5, 6] == counter && board[6, 6] == counter) ||
(board[3, 6] == counter && board[4, 6] == counter && board[5, 6] == counter && board[6, 6] == counter && board[7, 6] == counter) ||
(board[1, 7] == counter && board[2, 7] == counter && board[3, 7] == counter && board[4, 7] == counter && board[5, 7] == counter) ||
(board[2, 7] == counter && board[3, 7] == counter && board[4, 7] == counter && board[5, 7] == counter && board[6, 7] == counter) ||
(board[3, 7] == counter && board[4, 7] == counter && board[5, 7] == counter && board[6, 7] == counter && board[7, 7] == counter) ||
//VERTICAL
(board[1, 1] == counter && board[1, 2] == counter && board[1, 3] == counter && board[1, 4] == counter && board[1, 5] == counter) ||
(board[1, 2] == counter && board[1, 3] == counter && board[1, 4] == counter && board[1, 5] == counter && board[1, 6] == counter) ||
(board[1, 3] == counter && board[1, 4] == counter && board[1, 5] == counter && board[1, 6] == counter && board[1, 7] == counter) ||
(board[2, 1] == counter && board[2, 2] == counter && board[2, 3] == counter && board[2, 4] == counter && board[2, 5] == counter) ||
(board[2, 2] == counter && board[2, 3] == counter && board[2, 4] == counter && board[2, 5] == counter && board[2, 6] == counter) ||
(board[2, 3] == counter && board[2, 4] == counter && board[2, 5] == counter && board[2, 6] == counter && board[2, 7] == counter) ||
(board[3, 1] == counter && board[3, 2] == counter && board[3, 3] == counter && board[3, 4] == counter && board[3, 5] == counter) ||
(board[3, 2] == counter && board[3, 3] == counter && board[3, 4] == counter && board[3, 5] == counter && board[3, 6] == counter) ||
(board[3, 3] == counter && board[3, 4] == counter && board[3, 5] == counter && board[3, 6] == counter && board[3, 7] == counter) ||
(board[4, 1] == counter && board[4, 2] == counter && board[4, 3] == counter && board[4, 4] == counter && board[4, 5] == counter) ||
(board[4, 2] == counter && board[4, 3] == counter && board[4, 4] == counter && board[4, 5] == counter && board[4, 6] == counter) ||
(board[4, 3] == counter && board[4, 4] == counter && board[4, 5] == counter && board[4, 6] == counter && board[4, 7] == counter) ||
(board[5, 1] == counter && board[5, 2] == counter && board[5, 3] == counter && board[5, 4] == counter && board[5, 5] == counter) ||
(board[5, 2] == counter && board[5, 3] == counter && board[5, 4] == counter && board[5, 5] == counter && board[5, 6] == counter) ||
(board[5, 3] == counter && board[5, 4] == counter && board[5, 5] == counter && board[5, 6] == counter && board[5, 7] == counter) ||
(board[6, 1] == counter && board[6, 2] == counter && board[6, 3] == counter && board[6, 4] == counter && board[6, 5] == counter) ||
(board[6, 2] == counter && board[6, 3] == counter && board[6, 4] == counter && board[6, 5] == counter && board[6, 6] == counter) ||
(board[6, 3] == counter && board[6, 4] == counter && board[6, 5] == counter && board[6, 6] == counter && board[6, 7] == counter) ||
(board[7, 1] == counter && board[7, 2] == counter && board[7, 3] == counter && board[7, 4] == counter && board[7, 5] == counter) ||
(board[7, 2] == counter && board[7, 3] == counter && board[7, 4] == counter && board[7, 5] == counter && board[7, 6] == counter) ||
(board[7, 3] == counter && board[7, 4] == counter && board[7, 5] == counter && board[7, 6] == counter && board[7, 7] == counter) ||
//DIAGONAL
(board[1, 1] == counter && board[2, 2] == counter && board[3, 3] == counter && board[4, 4] == counter && board[5, 5] == counter) ||
(board[2, 2] == counter && board[3, 3] == counter && board[4, 4] == counter && board[5, 5] == counter && board[6, 6] == counter) ||
(board[3, 3] == counter && board[4, 4] == counter && board[5, 5] == counter && board[6, 6] == counter && board[7, 7] == counter))
{
return(true);
}
// Win at position (x,y), position (x,y), position(x,y)
else
{
Two(board, counter);
}
return(false);
}
// SPECIFY DIRECTION
public int GetNumForDir(int startSq, int dir, GameBoard_SYSTST <counters> board, counters us)
{
int found = 0;
while (board[startSq, startSq] != counters.BORDER)
{ // while start sq not border sq
if (board[startSq, startSq] != us)
{
break;
}
found++;
startSq += dir;
}
return(found);
}
// DETERMINE IF PLAYER HAS ONE
public bool One(GameBoard_SYSTST <counters> board, counters counter)
{
if (
//HORIZONTAL
(board[1, 1] == counter) ||
(board[1, 2] == counter) ||
(board[1, 3] == counter) ||
(board[1, 4] == counter) ||
(board[1, 5] == counter) ||
(board[1, 6] == counter) ||
(board[1, 7] == counter) ||
(board[2, 1] == counter) ||
(board[2, 2] == counter) ||
(board[2, 3] == counter) ||
(board[2, 4] == counter) ||
(board[2, 5] == counter) ||
(board[2, 6] == counter) ||
(board[2, 7] == counter) ||
(board[3, 1] == counter) ||
(board[3, 2] == counter) ||
(board[3, 3] == counter) ||
(board[3, 4] == counter) ||
(board[3, 5] == counter) ||
(board[3, 6] == counter) ||
(board[3, 7] == counter) ||
(board[4, 1] == counter) ||
(board[4, 2] == counter) ||
(board[4, 3] == counter) ||
(board[4, 4] == counter) ||
(board[4, 5] == counter) ||
(board[4, 6] == counter) ||
(board[4, 7] == counter) ||
(board[5, 1] == counter) ||
(board[5, 2] == counter) ||
(board[5, 3] == counter) ||
(board[5, 4] == counter) ||
(board[5, 5] == counter) ||
(board[5, 6] == counter) ||
(board[5, 7] == counter) ||
(board[6, 1] == counter) ||
(board[6, 2] == counter) ||
(board[6, 3] == counter) ||
(board[6, 4] == counter) ||
(board[6, 5] == counter) ||
(board[6, 6] == counter) ||
(board[6, 7] == counter) ||
(board[7, 1] == counter) ||
(board[7, 2] == counter) ||
(board[7, 3] == counter) ||
(board[7, 4] == counter) ||
(board[7, 5] == counter) ||
(board[7, 6] == counter) ||
(board[7, 7] == counter))
{
return(true);
}
// One at position (x,y), position (x,y), position(x,y)
else
{
return(false);
}
}
/* * ---------------------------------------------------------------------------------------------------------------- * GetMove - * -------------------------------------------------------------------------------------------------------------------------- * Takes user for x,y coords from Minimax for next move and then return a tuple containing the x,y coordinate position and then * places current counter in that coordinate position. * -------------------------------------------------------------------------------------------------------------------------- */ public abstract Tuple <int, int> GetMove(GameBoard_TPL <counters> board, counters counter, GameBoard_TPL <int> scoreBoard);
public HumanPlayer_SYSTST(string _name, counters _counter) : base(_counter)
{
name = _name;
}
// MINIMAX FUNCTION
public Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> > Minimax(GameBoard <counters> board, counters counter, int ply, Tuple <int, int> positions, bool mmax, GameBoard <int> scoreBoard, ref int cont, int alpha, int beta)
{
// decs
counters us = Flip(counter);
int ourindex = 1;
List <Tuple <int, int> > availableMoves = getAvailableMoves(board, positions);
// create new list of Tuple<int,int>
List <Tuple <int, Tuple <int, int> > > result_list = new List <Tuple <int, Tuple <int, int> > >();
int bestScore = mmax ? -1001 : 1001;
int score = Consts.MIN_SCORE; // current score of move
Tuple <int, int> Move = new Tuple <int, int>(0, 0);
Tuple <int, int> bestMove = new Tuple <int, int>(1, 1); // best move with score// THRESHOLD <=============
// add assertion here
// decs for random move
Random rnd = new Random();
int randMoveX = rnd.Next(1, 7); // creates a number between 1 and 7
int randMoveY = rnd.Next(1, 7); // creates a number between 1 and 7
Tuple <int, int> randMove = new Tuple <int, int>(randMoveX, randMoveY);
// check win
if (availableMoves.Count == 0)
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(10, positions, board, scoreBoard));
}
else if (Win(board, counter))
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(1000, positions, board, scoreBoard));
}
else if (Win(board, this.otherCounter))
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(-1000, positions, board, scoreBoard));
}
if (FindTwoInARow(board, counter) && Two(board, counter) && board[Move.Item1, Move.Item2] == counters.EMPTY)
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(100, positions, board, scoreBoard));
}
else if (FindTwoInARow(board, this.otherCounter) && Two(board, this.otherCounter) && board[Move.Item1, Move.Item2] == counters.EMPTY)
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(-100, positions, board, scoreBoard));
}
else if (FindOneInARow(board, ourindex, this.otherCounter) && One(board, counter) && board[Move.Item1, Move.Item2] == counters.EMPTY)
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(100, positions, board, scoreBoard));
}
else if (FindOneInARow(board, ourindex, this.otherCounter) && One(board, this.otherCounter) && board[Move.Item1, Move.Item2] == counters.EMPTY)
{
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(-100, positions, board, scoreBoard));
}
// CHECK DEPTH
else if (ply > maxPly)
{
score = EvalCurrentBoard(board, scoreBoard, ourindex, us); // call stat evaluation func - takes board and player and gives score to that player
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(score, positions, board, scoreBoard));
}
// Console.WriteLine("HWL: Is this line reached?");
// Console.ReadLine(); // HWL: even with a ReadLine here, the program runs to the end
// place random move
if (board.IsEmpty()) // if board is empty then play random move
{
// decide scoring for random move
score = EvalForWin(board, ourindex, us); // 1 for win, 0 for unknown
// assign two score
if (FindTwoInARow(board, us)) // player win?
{
score = 100; // twoinrow confirmed
}
if (FindTwoInARow(board, us + 1)) // twoinrow opponent?
{
score = -100; // twoinrow confirmed
}
if (FindOneInARow(board, ourindex, us)) // oneinrow?
{
score = 10; // oneinrow confirmed
}
if (FindOneInARow(board, ourindex, us + 1)) // oneinarow opponent?
{
score = -10; // oneinrow confirmed
}
// MakeRandomMove(board, counter, ply, positions, !mmax, scoreBoard, ref cont);
// Console.ReadLine();
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(score, positions, board, scoreBoard));
}
GameBoard <counters> copy;
// make copy original board
copy = board.Clone(); // make copy board
// copy.DisplayBoard(); // display copy board
// cell priority - favour centre and corners
for (int i = 0; i < availableMoves.Count; i++)
{
Move = availableMoves[i]; // current move
// cell priority - favour centre and corners
// HWL: where do you actual place the piece for the position in Move? you don't do this here, just pass Move to the call of Minimax below; in the recursive call you then overwrite the input argument with a random move (see comment at start of Minimax; so you are actually not considering Move at all!
// HWL: try placing the piece here, and below just use the score
copy[Move.Item1, Move.Item2] = counter; // place counter
// GameBoard board0 = MakeMove(board, move); // copies board - parallel ready
// ************************************************************************************************
// ************************************************************************************************
// ************************************** MAIN MINIMAX WORK ***************************************
// ************************************************************************************************
// ************************************************************************************************
// list defined in Minimax declarations
Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> > result = Minimax(copy, Flip(counter), ply + 1, Move, !mmax, scoreBoard, ref cont, alpha, beta); /* swap player */ // RECURSIVE call
// trying to prevent preventing cell overwrite
copy[Move.Item1, Move.Item2] = counters.EMPTY; /* counter; */ // HWL: remove counter that was tried in this iteration
// GameBoard board0 = MakeMove(board, move); // copies board - parallel ready
score = -result.Item1; // assign score
positions = result.Item2; // present position (x,y)
// list of all result - list of possible result Tuple<int, int>
result_list.Add(new Tuple <int, Tuple <int, int> >(score, positions));
// assign score to correct cell in score
scoreBoard[result.Item2.Item1, result.Item2.Item2] = score;
// HWL: summarise the result of having tried Move, print the assoc scoreboard and check that the matching move is the one for the highest score on the board
/* Console.WriteLine(mmax.ToString() +
* " **HWL (ply={0}) Trying Move ({4},{5}) gives score {1} and position ({2},{3}) [[so far bestScore={6}, bestMove=({7},{8})",
* ply, score, result.Item2.Item1, result.Item2.Item2, Move.Item1, Move.Item2,
* bestScore, bestMove.Item1, bestMove.Item2);
*/
// scoreBoard.DisplayBoard();
if (score == Consts.MIN_SCORE || score == Consts.MAX_SCORE)
{
/* Console.WriteLine("**HWL CLAIM: putting piece {0} at position ({1},{2}) gives 3-in-a-row:",
* counter, Move.Item1, Move.Item2);
*/
}
// ************************************************************************************************
// ************************************************************************************************
// ******************************** END OF MAIN MINIMAX WORK **************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************* WHEN TO MAXIMISE, WHEN TO MINIMISE ***********************************
// ******************************* WITH ALPHA-BETA PRUNING ****************************************
// ************************************************************************************************
// ************************************************************************************************
// if maximising
if (/* true HWL || */ mmax)
{
alpha = score;
if (score > bestScore)
{
bestMove = Move;
bestScore = score;
}
if (alpha > bestScore)
{
bestMove = Move;
bestScore = alpha;
}
}
// if minimising
else
{
if (bestScore > score)
{
bestMove = Move;
bestScore = score;
}
if (beta <= alpha)
{
bestScore = alpha;
}
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(bestScore, positions, board, scoreBoard));
}
// ************************************************************************************************
// ************************************************************************************************
// ********************* END OF WHEN TO MAXIMISE, WHEN TO MINIMISE ********************************
// ******************************* WITH ALPHA-BETA PRUNING ****************************************
// ************************************************************************************************
cont++; // increment positions visited
}
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(bestScore, bestMove, board, scoreBoard)); // return
}
public Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> > MakeRandomMove(GameBoard <counters> board, counters counter, int ply, Tuple <int, int> positions, bool mmax, GameBoard <int> scoreBoard, ref int cont)
{
List <Tuple <int, int> > availableMoves = getAvailableMoves(board, positions);
Tuple <int, int> Move = new Tuple <int, int>(0, 0);
Random rnd = new Random();
int randMoveX = rnd.Next(1, 7); // creates a number between 1 and 7
int randMoveY = rnd.Next(1, 7); // creates a number between 1 and 7
Tuple <int, int> randMove = new Tuple <int, int>(randMoveX, randMoveY);
int score = Consts.MIN_SCORE; // current score of move
counters us = Flip(counter);
int ourindex = 1;
// Create new stopwatch.
Stopwatch stopwatch = new Stopwatch();
// Begin timing.
stopwatch.Start();
Move = randMove;
positions = randMove; // HWL: NB: this overwrites the arg positions; which means you are actually not considering the move in positions, but a different, random move; this probably explains why you get such strange moves in your gameplay
board.DisplayBoard();
//cont = 1;
if (ply > 0)
{
score = EvalCurrentBoard(board, scoreBoard, ourindex, us); // is current pos a win?
}
// Stop timing.
stopwatch.Stop();
Console.WriteLine("========================================================================================================================" +
"RANDOMLY SELECTED MOVE:" + Environment.NewLine + "------------------------------------------------------------------------------------------------------------------------" +
"position: " + positions + "; " +
"for player: " + counter + "; " +
"score: " + score + "; " +
"positions visited " + cont + "; " +
"depth level: " + ply + Environment.NewLine +
"elapsed time for move: " + stopwatch.Elapsed + "; " +
"no. of remaining moves left: " + availableMoves.Count + Environment.NewLine +
"two in a row detected at: " + "Cell 1: " + IsLeftofTwo(board, counter) + ", " + "Cell 2: " + IsRightofTwo(board, counter)
+ Environment.NewLine +
"build on two-in-row? " + "left: " + board.IsTwoLeftNeighbourEmpty(board, counter) + " at position " + board.PrintTwoLeftNeighbour(board, counter) +
", right: " + board.IsTwoRightNeighbourEmpty(board, counter) + " at position " + board.PrintTwoRightNeighbour(board, counter) + Environment.NewLine +
"top: " + board.IsTwoTopNeighbourEmpty(board, counter) + " at position " + board.PrintTwoTopNeighbour(board, counter) +
", bottom: " + board.IsTwoBottomNeighbourEmpty(board, counter) + " at position " + board.PrintTwoBottomNeighbour(board, counter) + Environment.NewLine
+ "build on one-in-row? " + "left: " + board.IsOneLeftNeighbourEmpty(board, counter) + " at position " + board.PrintOneLeftNeighbour(board, counter) +
", right: " + board.IsOneRightNeighbourEmpty(board, counter) + " at position " + board.PrintOneRightNeighbour(board, counter) + Environment.NewLine +
"top: " + board.IsOneTopNeighbourEmpty(board, counter) + " at position " + board.PrintOneTopNeighbour(board, counter) +
", bottom: " + board.IsOneBottomNeighbourEmpty(board, counter) + " at position " + board.PrintOneBottomNeighbour(board, counter) + Environment.NewLine +
"build on two-in-row?:" + " with horzi gap? " + board.IsTwoWithHorziGapEmpty(board, counter) + " at position " + board.PrintTwoWithHorziGap(board, counter) +
", with vertical gap?: " + board.IsTwoWithVerticalGapEmpty(board, counter) + " at position " + board.PrintTwoWithVerticalGap(board, counter));
Console.WriteLine("========================================================================================================================");
// Console.ReadLine();
// assign score to correct cell in score
scoreBoard[randMoveX, randMoveY] = score;
// RandScoringSummary(board, scoreBoard);
// scoreBoard.DisplayBoard();
// Console.ReadLine();
return(new Tuple <int, Tuple <int, int>, GameBoard <counters>, GameBoard <int> >(score, positions, board, scoreBoard));
}
// STATIC EVALUATION FUNCTION
public int EvalCurrentBoard(GameBoard <counters> board, GameBoard <int> scoreBoard, int ourindex, counters us)
{
// score decs
int score = 10;
int two_score = 10;
int one_score = 10;
// assign
score = EvalForWin(board, ourindex, us); // 1 for win, 0 for unknown
// assign two score
if (FindTwoInARow(board, us)) // player win?
{
score = 100; // twoinrow confirmed
}
two_score = 100;
if (FindTwoInARow(board, us + 1)) // twoinrow opponent?
{
score = -100; // twoinrow confirmed
}
two_score = -100;
// one score
if (FindOneInARow(board, ourindex, us)) // oneinrow?
{
score = 10; // oneinrow confirmed
}
one_score = 10;
if (FindOneInARow(board, ourindex, us + 1)) // oneinarow opponent?
{
score = -10; // oneinrow confirmed
}
one_score = -10;
// ************************************************************************************************
// ************************************************************************************************
// ******** ASSIGN MORE WEIGHT TO INDIVIDUAL CELLS WITH MORE PROMINENT POSITIONING TO BUILD ON ****
// ************************************************************************************************
// ************************************************************************************************
// assign more weight to score with individual cell moves with prominent positioning
if (board.IsMiddleEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[4, 4] = counter;
if (board[4, 4] == counter)
{
return(score = 125); // player win confirmed
}
return(score = 10);
}
// assign more weight to score with individual cell moves with prominent positioning
if (board.IsMiddleEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[4, 4] = counter;
if (board[4, 4] == counter)
{
// assign score to correct cell in score
scoreBoard[4, 4] = score;
return(score = 125); // player win confirmed
}
return(score = 10);
}
else if (board.IsMiddleEmpty() == true & FindTwoInARow(board, us + 1))
{
score = -100;
// player win?
board[4, 4] = counter;
if (board[4, 4] == counter)
{
// assign score to correct cell in score
scoreBoard[4, 4] = score;
return(score = -125); // opponent win confirmed
}
return(score = 10);
}
if (board.IsTopLeftEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[1, 1] = counter;
if (board[1, 1] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[1, 1] = score;
return(score = 115); // player win confirmed
}
return(score = 10);
}
else if (board.IsTopLeftEmpty() == true & FindTwoInARow(board, us + 1))
{
score = -100;
// player win?
board[1, 1] = counter;
if (board[1, 1] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[1, 1] = score;
return(score = -115); // opponent win confirmed
}
return(score = 10);
}
if (board.IsTopRightEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[7, 1] = counter;
if (board[7, 1] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[7, 1] = score;
return(score = 115); // player win confirmed
}
return(score = 10);
}
else if (board.IsTopRightEmpty() == true & FindTwoInARow(board, us + 1))
{
score = -100;
// player win?
board[7, 1] = counter;
if (board[7, 1] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[7, 1] = score;
return(score = -115); // opponent win confirmed
}
return(score = 10);
}
if (board.IsBottomLeftEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[1, 7] = counter;
if (board[1, 7] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[1, 7] = score;
return(score = 115); // player win confirmed
}
return(score = 10);
}
else if (board.IsBottomLeftEmpty() == true & FindTwoInARow(board, us + 1))
{
score = -100;
// player win?
board[1, 7] = counter;
if (board[1, 7] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[1, 7] = score;
return(score = -115); // opponent win confirmed
}
return(score = 10);
}
if (board.IsBottomRightEmpty() == true & FindTwoInARow(board, us))
{
score = 100;
// player win?
board[7, 7] = counter;
if (board[7, 7] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[7, 7] = score;
return(score = 115);
}
return(score = 10);
}
else if (board.IsBottomRightEmpty() == true & FindTwoInARow(board, us + 1))
{
two_score = -100;
// player win?
board[7, 7] = counter;
if (board[7, 7] == counters.EMPTY)
{
// assign score to correct cell in score
scoreBoard[7, 7] = score;
return(score = -115); // opponent win confirmed
}
}
// ************************************************************************************************
// ************************************************************************************************
// ** END OF ASSIGN MORE WEIGHT TO INDIVIDUAL CELLS WITH MORE PROMINENT POSITIONING TO BUILD ON **
// ************************************************************************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************* ASSIGNING LESSER VALUE TO EDGES ***********************************
// ************************************************************************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************************************************************************************
// ************************* END OF ASSIGNING LESSER VALUE TO EDGES *******************************
// ************************************************************************************************
// ************************************************************************************************
/* // if one in a row, if two in a row found, three in a row found etc....
* if (score == -1000 || score == 1000)
* {
* board.DisplayBoard();
* // Console.Write("three: " + score);
* // Console.ReadLine();
*
* return score * Consts.MAX_SCORE;
* }
*/
if (two_score != 0)
{
// board.DisplayBoard();
// Console.Write("two: " + two_score);
//Console.ReadLine();
return(two_score);
}
if (one_score != 0)
{
//board.DisplayBoard();
// Console.Write("one: " + one_score);
return(one_score);
}
else
{
return(score = 10);
}
}
public static int cont = 0; // counter for number of nodes visited
public AIPlayer(counters _counter) : base(_counter)
{
}