public override bool terminalTest(GameState state)
{
TicTacToeBoard board = (TicTacToeBoard)state.get("board");
bool line = board.lineThroughBoard();
bool filled = board.getNumberOfMarkedPositions() == 9;
return(line || filled);
}
public Object clone()
{
TicTacToeBoard newBoard = new TicTacToeBoard();
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
String s = getValue(i, j);
newBoard.setValue(i, j, s);
}
}
return(newBoard);
}
private int computeUtility(TicTacToeBoard aBoard, string playerToMove)
{
int retVal = 0;
if (aBoard.lineThroughBoard())
{
if (playerToMove.Equals("X"))
{
retVal = -1;
}
else
{
retVal = 1;
}
}
return(retVal);
}
public GameState getMove(GameState state, int x, int y)
{
GameState retVal = null;
XYLocation loc = new XYLocation(x, y);
ArrayList moves = getMoves(state);
ArrayList newMoves = (ArrayList)moves.Clone();
if (moves.Contains(loc))
{
//int index = newMoves.indexOf(loc);
int index = newMoves.IndexOf(loc);
//newMoves.Remove(index);
//.remove function is not overloaded in .net like it is in java
//in .NET .remove only removes the instance of the parameter,
//not the object at the index
newMoves.RemoveAt(index);
retVal = new GameState();
retVal.put("moves", newMoves);
TicTacToeBoard newBoard = getBoard(state).cloneBoard();
if (getPlayerToMove(state) == "X")
{
newBoard.markX(x, y);
retVal.put("player", "O");
}
else
{
newBoard.markO(x, y);
retVal.put("player", "X");
}
retVal.put("board", newBoard);
retVal.put("utility", computeUtility(newBoard,
getPlayerToMove(getState())));
retVal.put("level", getLevel(state) + 1);
//presentState = retVal;
}
return(retVal);
}
public override bool Equals(Object anObj)
{
bool retVal = true;
TicTacToeBoard anotherBoard = (TicTacToeBoard)anObj;
bool secondBreak = false;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
if (anotherBoard.getValue(i, j) != getValue(i, j))
{
retVal = false;
secondBreak = true;
break;
}
}
if (secondBreak == false)
{
break;
}
}
return(retVal);
}
private int computeUtility(TicTacToeBoard aBoard, string playerToMove)
{
int retVal = 0;
if (aBoard.lineThroughBoard())
{
if (playerToMove.Equals("X"))
{
retVal = -1;
}
else
{
retVal = 1;
}
}
return retVal;
}
public Object clone()
{
TicTacToeBoard newBoard = new TicTacToeBoard();
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
String s = getValue(i, j);
newBoard.setValue(i, j, s);
}
}
return newBoard;
}