switching between 2 people in TicTacToe.java

[yolkman]

How do you alternate between 2 human players?

[D_C]

int i;
while((i <= 9) && (!win)) // 9 squares, so 9 inputs.
{
  System.out.println("Player " + (i%2) + "'s turn");
  win = GetInputAndUpdate(((i%2)==1));
  i++;
}
if(win)
{
  System.out.println("Player " + ((i-1)%2) + " wins!");
}
 

Effectively, you are passing a boolean value that is true if it's player 1's turn to input data. Also, win is a boolean value that is returned if a player has one the game.

If you have an N player game, then do (i % N).

[yolkman]

I have a boolean method named makeMove that tries to make a move and returns true if the move is valid and false if it isn't.

I also have a public String promptMove() method that prompts a player to move a piece on the board.

    public boolean makeMove( String move ){
 
 
        for(int row=0; row<3; row++){
 
 
            for(int col=0; col<3; col++){
 
 
            if(board[row][col]=="")
            move.equals(board[row][col]);
 
            canvas.repaint(board, row, col);
 
            return true;
 
            }
        }    
 
 
            return false;
}
 
   public String promptMove(){
 
        while(!gameOver()){
 
            currentPlayer=playerOne;
 
            if(currentPlayer.makeMove(String move))
 
            currentPlayer=playerTwo;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerOne;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerTwo;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerOne;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerTwo;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerOne;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerTwo;
 
            if(currentPlayer.makeMove(String move))
            currentPlayer=playerOne;            
 
 
 
            }
 
 
    }
 

How do I set up a for loop in the promptMove method that will loop between playerOne which is "X" and playerTwo which is "O"?

[yolkman]

I've finished all the code but I can't get the "X" and "O"s to show up on the board or to switch between human players.

package csc216.project2;
 
import javax.swing.JOptionPane;
 
 
 
 
public class TicTacToe implements GameBoard{
 
    private GameCanvas canvas;
 
    private String [] [] board;
 
    private String currentPlayer;
 
    private String playerOne="X";
 
    private String playerTwo="O";
 
    private int row;
 
    private int col;
 
 
 
    public TicTacToe(){
 
        canvas=new GameCanvas();
 
        currentPlayer=null;
 
        board=new String[3][3];
 
        row=3;
 
        col=3;
 
 
        }
 
    /**
     *Draws current state of the board
     */
 
    public void displayBoard(){
 
        canvas.repaint(board, row, col);
 
 
 
 
        }
 
    /**
     *Query whether the game is completed
     *@return TRUE if game is over, FALSE otherwise
     */            
 
    public boolean gameOver(){
 
        for(int row=0; row<3; row++ )
            for(int col=0; col<3; col++)
 
 
            if(board[0][col]=="X" || board[0][col]=="O")
            return true;
 
            else if(board[1][col]=="X" || board[1][col]=="O")
            return true;
 
            else if(board[2][col]=="X" || board[2][col]=="O")
            return true;
 
            else if(board[row][0]=="X" || board[row][0]=="O")
            return true;
 
            else if(board[row][1]=="X" || board[row][1]=="O")
            return true;
 
            else if(board[row][2]=="X" || board[row][2]=="O")
            return true;
 
            else if(board[0][0]=="X" && board[1][1]=="X" && board[2][2]=="X")
            return true;
 
            else if(board[0][0]=="O" && board[1][1]=="O" && board[2][2]=="O")
            return true;
 
            else if(board[2][0]=="X" && board[1][1]=="X" && board[0][2]=="X")
            return true;
 
            else if(board[2][0]=="O" && board[1][1]=="O" && board[0][2]=="O")
            return true;
 
            else if(board[row][col]!="")
            return true;
 
 
 
            return false;
 
 
 
    }
 
    /**
     *Initialize the board to a starting state
     */
 
    public void initBoard(){
 
            for(int row=0; row<3; row++)
 
                for(int col=0; col<3; col++)
 
                board[row][col]="";
 
                canvas.repaint(board, row, col);
 
 
 
    }
 
    /**
     * Attempt to move a playing piece on the board
     *@param move the proposed move
     *@return TRUE if the move is valid, FALSE otherwise
     */
 
    public boolean makeMove(String move){
 
 
            for(int row=0; row<3; row++)
 
 
                for(int col=0; col<3; col++)
 
 
                if(board[row][col]==""){
 
                board[row][col]=move;
 
                return true;
 
                }
 
                else{
 
                String msg = "Invalid move " + move + " entered.";
                JOptionPane.showMessageDialog( null, msg, "Invalid Move", JOptionPane.ERROR_MESSAGE );
 
                return false;
 
                }
 
                return false;
 
    }
 
    /**
     *Prompt a player to move a playing piece on the board
     */
 
    public String promptMove(){
 
        currentPlayer=playerOne;
 
        String inp = JOptionPane.showInputDialog( null, "Enter a valid move:" );
 
        if(currentPlayer==playerOne){
 
        return "X";
        }
 
        String inp1 = JOptionPane.showInputDialog( null, "Enter a valid move:" );
 
 
 
        if(currentPlayer==playerTwo)
 
        board[row][col]="O";
 
        return "O";
 
 
    }
 
 
    public void quit(){
 
        canvas.dispose();
 
        System.exit(1);
    }
 
    public static void main(String args[]){
 
        GameBoard gBoard=new TicTacToe();
 
        gBoard.initBoard();
 
        gBoard.promptMove();
 
        gBoard.makeMove("X");
 
        gBoard.displayBoard();
 
 
 
 
}
 
}
 
 

[D_C]

You get the user input as inpl, and then do absolutely nothing with it. You assume it magically gets transformed into a row and a col value. You need to decode inpl into row and col. Otherwise, you keep changing game[3][3], and the last entry should be game[2][2].

[yolkman]

You get the user input as inpl, and then do absolutely nothing with it. You assume it magically gets transformed into a row and a col value. You need to decode inpl into row and col. Otherwise, you keep changing game[3][3], and the last entry should be game[2][2].

I am unclear as to what you have just said.

[rea haris]

could someone plz help me with coding for interaction between client and server to run tictactoe.i need that as soon as possible..