Jogo da velha (JAVA)

------------------------------------------------------------------------------------- Uma aplicação Cliente/Servidor para que possa ser jogado em máquinas diferentes. ------------------------------------------------------------------------------------- JogoVelhaClientTest.java import javax.swing.JFrame; public class JogoVelhaClientTest { public static void main( String[] args ) { JogoVelhaClient application; // declare client application if ( args.length == 0 ) application = new JogoVelhaClient( "127.0.0.1" ); else application = new JogoVelhaClient( args[ 0 ] ); application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); } } --------------------------------------------------------------------------- JogoVelhaClient.java public class JogoVelhaClient extends JFrame implements Runnable { private JTextField idField; // textfield to display player's mark private JTextArea displayArea; // JTextArea to display output private JPanel boardPanel; // panel for tic-tac-toe board private JPanel panel2; // panel to hold board private Square[][] board; // tic-tac-toe board private Square currentSquare; // current square private Socket connection; // connection to server private Scanner input; // input from server private Formatter output; // output to server private String JogoVelhaHost; // host name for server private String myMark; // this client's mark private boolean myTurn; // determines which client's turn it is private final String X_MARK = "X"; // mark for first client private final String O_MARK = "O"; // mark for second client // set up user-interface and board public JogoVelhaClient( String host ) { JogoVelhaHost = host; // set name of server displayArea = new JTextArea( 4, 30 ); // set up JTextArea displayArea.setEditable( false ); add( new JScrollPane( displayArea ), BorderLayout.SOUTH ); boardPanel = new JPanel(); // set up panel for squares in board boardPanel.setLayout( new GridLayout( 3, 3, 0, 0 ) ); board = new Square[ 3 ][ 3 ]; // create board // loop over the rows in the board for ( int row = 0; row < board.length; row++ ) { // loop over the columns in the board for ( int column = 0; column < board[ row ].length; column++ ) { // create square board[ row ][ column ] = new Square( " ", row * 3 + column ); boardPanel.add( board[ row ][ column ] ); // add square } // end inner for } // end outer for idField = new JTextField(); // set up textfield idField.setEditable( false ); add( idField, BorderLayout.NORTH ); panel2 = new JPanel(); // set up panel to contain boardPanel panel2.add( boardPanel, BorderLayout.CENTER ); // add board panel add( panel2, BorderLayout.CENTER ); // add container panel setSize( 300, 225 ); // set size of window setVisible( true ); // show window startClient(); } // end JogoVelhaClient constructor // start the client thread public void startClient() { try // connect to server and get streams { // make connection to server connection = new Socket( InetAddress.getByName( JogoVelhaHost ), 12345 ); // get streams for input and output input = new Scanner( connection.getInputStream() ); output = new Formatter( connection.getOutputStream() ); } // end try catch ( IOException ioException ) { ioException.printStackTrace(); } // end catch // create and start worker thread for this client ExecutorService worker = Executors.newFixedThreadPool( 1 ); worker.execute( this ); // execute client } // end method startClient // control thread that allows continuous update of displayArea public void run() { myMark = input.nextLine(); // get player's mark (X or O) SwingUtilities.invokeLater( new Runnable() { public void run() { // display player's mark idField.setText( "You are player \"" + myMark + "\"" ); } // end method run } // end anonymous inner class ); // end call to SwingUtilities.invokeLater myTurn = ( myMark.equals( X_MARK ) ); // determine if client's turn // receive messages sent to client and output them while ( true ) { if ( input.hasNextLine() ) processMessage( input.nextLine() ); } // end while } // end method run // process messages received by client private void processMessage( String message ) { // valid move occurred if ( message.equals( "Valid move." ) ) { displayMessage( "Valid move, please wait.\n" ); setMark( currentSquare, myMark ); // set mark in square } // end if else if ( message.equals( "Invalid move, try again" ) ) { displayMessage( message + "\n" ); // display invalid move myTurn = true; // still this client's turn } // end else if else if ( message.equals( "Opponent moved" ) ) { int location = input.nextInt(); // get move location input.nextLine(); // skip newline after int location int row = location / 3; // calculate row int column = location % 3; // calculate column setMark( board[ row ][ column ], ( myMark.equals( X_MARK ) ? O_MARK : X_MARK ) ); // mark move displayMessage( "Opponent moved. Your turn.\n" ); myTurn = true; // now this client's turn } // end else if else displayMessage( message + "\n" ); // display the message } // end method processMessage // manipulate displayArea in event-dispatch thread private void displayMessage( final String messageToDisplay ) { SwingUtilities.invokeLater( new Runnable() { public void run() { displayArea.append( messageToDisplay ); // updates output } // end method run } // end inner class ); // end call to SwingUtilities.invokeLater } // end method displayMessage // utility method to set mark on board in event-dispatch thread private void setMark( final Square squareToMark, final String mark ) { SwingUtilities.invokeLater( new Runnable() { public void run() { squareToMark.setMark( mark ); // set mark in square } // end method run } // end anonymous inner class ); // end call to SwingUtilities.invokeLater } // end method setMark // send message to server indicating clicked square public void sendClickedSquare( int location ) { // if it is my turn if ( myTurn ) { output.format( "%d\n", location ); // send location to server output.flush(); myTurn = false; // not my turn any more } // end if } // end method sendClickedSquare // set current Square public void setCurrentSquare( Square square ) { currentSquare = square; // set current square to argument } // end method setCurrentSquare // private inner class for the squares on the board private class Square extends JPanel { private String mark; // mark to be drawn in this square private int location; // location of square public Square( String squareMark, int squareLocation ) { mark = squareMark; // set mark for this square location = squareLocation; // set location of this square addMouseListener( new MouseAdapter() { public void mouseReleased( MouseEvent e ) { setCurrentSquare( Square.this ); // set current square // send location of this square sendClickedSquare( getSquareLocation() ); } // end method mouseReleased } // end anonymous inner class ); // end call to addMouseListener } // end Square constructor // return preferred size of Square public Dimension getPreferredSize() { return new Dimension( 30, 30 ); // return preferred size } // end method getPreferredSize // return minimum size of Square public Dimension getMinimumSize() { return getPreferredSize(); // return preferred size } // end method getMinimumSize // set mark for Square public void setMark( String newMark ) { mark = newMark; // set mark of square repaint(); // repaint square } // end method setMark // return Square location public int getSquareLocation() { return location; // return location of square } // end method getSquareLocation // draw Square public void paintComponent( Graphics g ) { super.paintComponent( g ); g.drawRect( 0, 0, 29, 29 ); // draw square g.drawString( mark, 11, 20 ); // draw mark } // end method paintComponent } // end inner-class Square } // end class JogoVelhaClient --------------------------------------------------------------------------- JogoVelhaServerTest.java // Class that tests JogoVelha server. import javax.swing.JFrame; public class JogoVelhaServerTest { public static void main( String[] args ) { JogoVelhaServer application = new JogoVelhaServer(); application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); application.execute(); } // end main } // end class JogoVelhaServerTest --------------------------------------------------------------------------- JogoVelhaServer.java // Server side of client/server Tic-Tac-Toe program. import java.awt.BorderLayout; import java.net.ServerSocket; import java.net.Socket; import java.io.IOException; import java.util.Formatter; import java.util.Scanner; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; import java.util.concurrent.locks.Condition; import javax.swing.JFrame; import javax.swing.JTextArea; import javax.swing.SwingUtilities; public class JogoVelhaServer extends JFrame { private String[] board = new String[ 9 ]; // tic-tac-toe board private JTextArea outputArea; // for outputting moves private Player[] players; // array of Players private ServerSocket server; // server socket to connect with clients private int currentPlayer; // keeps track of player with current move private final static int PLAYER_X = 0; // constant for first player private final static int PLAYER_O = 1; // constant for second player private final static String[] MARKS = { "X", "O" }; // array of marks private ExecutorService runGame; // will run players private Lock gameLock; // to lock game for synchronization private Condition otherPlayerConnected; // to wait for other player private Condition otherPlayerTurn; // to wait for other player's turn // set up tic-tac-toe server and GUI that displays messages public JogoVelhaServer() { super( "Tic-Tac-Toe Server" ); // set title of window // create ExecutorService with a thread for each player runGame = Executors.newFixedThreadPool( 2 ); gameLock = new ReentrantLock(); // create lock for game // condition variable for both players being connected otherPlayerConnected = gameLock.newCondition(); // condition variable for the other player's turn otherPlayerTurn = gameLock.newCondition(); for ( int i = 0; i < 9; i++ ) board[ i ] = new String( "" ); // create tic-tac-toe board players = new Player[ 2 ]; // create array of players currentPlayer = PLAYER_X; // set current player to first player try { server = new ServerSocket( 12345, 2 ); // set up ServerSocket } // end try catch ( IOException ioException ) { ioException.printStackTrace(); System.exit( 1 ); } // end catch outputArea = new JTextArea(); // create JTextArea for output add( outputArea, BorderLayout.CENTER ); outputArea.setText( "Server awaiting connections\n" ); setSize( 300, 300 ); // set size of window setVisible( true ); // show window } // end JogoVelhaServer constructor // wait for two connections so game can be played public void execute() { // wait for each client to connect for ( int i = 0; i < players.length; i++ ) { try // wait for connection, create Player, start runnable { players[ i ] = new Player( server.accept(), i ); runGame.execute( players[ i ] ); // execute player runnable } // end try catch ( IOException ioException ) { ioException.printStackTrace(); System.exit( 1 ); } // end catch } // end for gameLock.lock(); // lock game to signal player X's thread try { players[ PLAYER_X ].setSuspended( false ); // resume player X otherPlayerConnected.signal(); // wake up player X's thread } // end try finally { gameLock.unlock(); // unlock game after signalling player X } // end finally } // end method execute // display message in outputArea private void displayMessage( final String messageToDisplay ) { // display message from event-dispatch thread of execution SwingUtilities.invokeLater( new Runnable() { public void run() // updates outputArea { outputArea.append( messageToDisplay ); // add message } // end method run } // end inner class ); // end call to SwingUtilities.invokeLater } // end method displayMessage // determine if move is valid public boolean validateAndMove( int location, int player ) { // while not current player, must wait for turn while ( player != currentPlayer ) { gameLock.lock(); // lock game to wait for other player to go try { otherPlayerTurn.await(); // wait for player's turn } // end try catch ( InterruptedException exception ) { exception.printStackTrace(); } // end catch finally { gameLock.unlock(); // unlock game after waiting } // end finally } // end while // if location not occupied, make move if ( !isOccupied( location ) ) { board[ location ] = MARKS[ currentPlayer ]; // set move on board currentPlayer = ( currentPlayer + 1 ) % 2; // change player // let new current player know that move occurred players[ currentPlayer ].otherPlayerMoved( location ); gameLock.lock(); // lock game to signal other player to go try { otherPlayerTurn.signal(); // signal other player to continue } // end try finally { gameLock.unlock(); // unlock game after signaling } // end finally return true; // notify player that move was valid } // end if else // move was not valid return false; // notify player that move was invalid } // end method validateAndMove // determine whether location is occupied public boolean isOccupied( int location ) { if ( board[ location ].equals( MARKS[ PLAYER_X ] ) || board [ location ].equals( MARKS[ PLAYER_O ] ) ) return true; // location is occupied else return false; // location is not occupied } // end method isOccupied // place code in this method to determine whether game over public boolean isGameOver() { return false; // this is left as an exercise } // end method isGameOver // private inner class Player manages each Player as a runnable private class Player implements Runnable { private Socket connection; // connection to client private Scanner input; // input from client private Formatter output; // output to client private int playerNumber; // tracks which player this is private String mark; // mark for this player private boolean suspended = true; // whether thread is suspended // set up Player thread public Player( Socket socket, int number ) { playerNumber = number; // store this player's number mark = MARKS[ playerNumber ]; // specify player's mark connection = socket; // store socket for client try // obtain streams from Socket { input = new Scanner( connection.getInputStream() ); output = new Formatter( connection.getOutputStream() ); } // end try catch ( IOException ioException ) { ioException.printStackTrace(); System.exit( 1 ); } // end catch } // end Player constructor // send message that other player moved public void otherPlayerMoved( int location ) { output.format( "Opponent moved\n" ); output.format( "%d\n", location ); // send location of move output.flush(); // flush output } // end method otherPlayerMoved // control thread's execution public void run() { // send client its mark (X or O), process messages from client try { displayMessage( "Player " + mark + " connected\n" ); output.format( "%s\n", mark ); // send player's mark output.flush(); // flush output // if player X, wait for another player to arrive if ( playerNumber == PLAYER_X ) { output.format( "%s\n%s", "Player X connected", "Waiting for another player\n" ); output.flush(); // flush output gameLock.lock(); // lock game to wait for second player try { while( suspended ) { otherPlayerConnected.await(); // wait for player O } // end while } // end try catch ( InterruptedException exception ) { exception.printStackTrace(); } // end catch finally { gameLock.unlock(); // unlock game after second player } // end finally // send message that other player connected output.format( "Other player connected. Your move.\n" ); output.flush(); // flush output } // end if else { output.format( "Player O connected, please wait\n" ); output.flush(); // flush output } // end else // while game not over while ( !isGameOver() ) { int location = 0; // initialize move location if ( input.hasNext() ) location = input.nextInt(); // get move location // check for valid move if ( validateAndMove( location, playerNumber ) ) { displayMessage( "\nlocation: " + location ); output.format( "Valid move.\n" ); // notify client output.flush(); // flush output } // end if else // move was invalid { output.format( "Invalid move, try again\n" ); output.flush(); // flush output } // end else } // end while } // end try finally { try { connection.close(); // close connection to client } // end try catch ( IOException ioException ) { ioException.printStackTrace(); System.exit( 1 ); } // end catch } // end finally } // end method run // set whether or not thread is suspended public void setSuspended( boolean status ) { suspended = status; // set value of suspended } // end method setSuspended } // end class Player } // end class JogoVelhaServer --------------------------------------------------------------------------------------------------------------------