//Purpose: Displays the board in the console
//Parameter: The board to display
public void displayBoard(Board board)
{
char Rows = 'A';
Console.Write(" 0 1 2 3 4 5 6 7 8 \n");
for (int i = 0; i < board.getSize(); i++)
{
if (i % 3 == 0)
{
Console.Write(" ========================================================= \n");
}
else
{
Console.Write(" --------------------------------------------------------- \n");
}
Console.Write(Rows);
for (int j = 0; j < board.getSize(); j++)
{
if (j % 3 == 0)
{
if (board.getValue(i, j) == 0)
{
Console.Write(" ||| ");
}
else if (board.getOriginalValue(i, j) == true)
{
Console.Write(" |||" + board.getValue(i, j) + "'");
}
else
{
Console.Write(" ||| " + board.getValue(i, j));
}
}
else
{
if (board.getValue(i, j) == 0)
{
Console.Write(" | ");
}
else if (board.getOriginalValue(i, j) == true)
{
Console.Write(" | " + board.getValue(i, j) + "'");
}
else
{
Console.Write(" | " + board.getValue(i, j));
}
}
}
Console.Write(" ||| \n");
Rows++;
}
Console.Write(" ========================================================= \n");
}
//Purpose: Checks the player's input to make sure it is valid
//Parameters: the row, column, and the value
//Returns: False if the input is invalid, else true
public static Boolean checkInput(int userRow, int userColumn, int userValue, Board board)
{
if(userRow >= board.getSize() || userColumn >= board.getSize())
{
return false;
}
else if (userValue > 9 || userValue < 0)
{
return false;
}
else
{
return true;
}
}
//Purpose: Checks for a win
//Parameters: the board
//Returns: True if the player has won, else false
public static Boolean checkForWin(Board board)
{
//check each space for a 0
for(int i = 0; i < board.getSize(); i++)
{
for (int j = 0; j < board.getSize(); j++)
{
if (board.getValue(i,j) == 0)
{
return false;
}
}
}
//if all spaces have a value, then the player has won
return true;
}
//Purpose: Initializes the board and lets the player play
public static void playGame()
{
Board board = new Board();
board.makeBoard(0);
Display display = new Display();
Boolean notFinished = true;
string[] userInput;
int userRow = 0;
int userColumn = 0;
int userValue = 0;
int oldValue = 0;//used to store the old value of the node
board.AC3();//need to run the AC-3 algorithm once before starting
while (notFinished)
{
//Display Board
display.displayBoard(board);
//Get input
Console.Write("Insert a Value (Example: A2 1 ), type exit to quit\nInput: ");
userInput = Console.ReadLine().Split(' ');
if(userInput[0] == "exit")
{
return;
}
if(userInput.Length != 2 || userInput[0].Length != 2 || userInput[1].Length != 1)
{
Console.Write("Invalid Input...\n\n");
continue;
}
//convert the user's input
userRow = char.ToUpper(userInput[0][0]) - 65;
userColumn = userInput[0][1] - 48;
userValue = userInput[1][0] - 48;
//check the user's input to make sure it isnt out of range and is a number from 1 to 9
if (checkInput(userRow, userColumn, userValue, board))
{
if (board.getOriginalValue(userRow, userColumn))
{
Console.Write("Cannot modify original values...\n\n");
continue;
}
//----------------------------AI implementation-----------------------------------
//Insert value
board.insertValue(userRow, userColumn, userValue);
//check if the user has violated a constraint
if (board.checkDomain(userRow, userColumn, userValue) == false)
{
//If the input violates the constraints, remove value
if(userValue != 0)
{
Console.Write("Constraints not met, removing value\n\n");
}
else
{
Console.Write("Removing value\n\n");
}
board.removeValue(userRow, userColumn);
board.resetDomains();
board.AC3();
continue;
}
board.resetDomains();//resets the domain of all the variables
if (board.AC3())//run AC-3 algorithm
{
Console.WriteLine("AC-3 Returned True");
}
else//if AC-3 algorithm returns false
{
Console.Write("AC-3 Returned false, Something is wrong");
}
if (checkForWin(board) == true)
{
Console.Write("You have won!");
notFinished = false;//If they have, notFinished == false;
}
}//end of if (checkInput(userRow, userColumn, userValue, board))
else//if the input is not valid
{
Console.Write("Invalid Input...\n\n");
continue;
}
Console.Write("\n\n");
}
}
