For this assignment you will be developing a very very simplified version of a s

Question

For this assignment you will be developing a very very simplified version of a single

player chess game.

Here is what you need to do:

1. Initialize the 8x8 chess board to the usual starting state of a chess game. Use

a 2D array of Strings for this step. Use nested for loops to initialize the

empty squares. (5 points)

2. Prompt the user to choose the color (s)he wants to play. Make sure that the

program allows only two choices, black or white. (5 points)

3. Display the current status of the chess board, and the color that the user is

currently playing for. (3 points)

4. Prompt the user to make a move. The user has to specify the current location

of the piece (the row index, and then the column index), and the desired

destination of the piece (again, row and column index). So if the user

specifies 0, 0, and then 2,0, then (s)he is asking to move the piece at location

(0,0) to location (2,0), which is 2 squares vertically. Check for valid indexes.

(7 points)

5. The program needs to do the following to complete user

Explanation / Answer

import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; public class ChessGameDemo extends JFrame implements MouseListener, MouseMotionListener { JLayeredPane layeredPane; JPanel chessBoard; JLabel chessPiece; int xAdjustment; int yAdjustment; public ChessGameDemo(){ Dimension boardSize = new Dimension(600, 600); // Use a Layered Pane for this this application layeredPane = new JLayeredPane(); getContentPane().add(layeredPane); layeredPane.setPreferredSize(boardSize); layeredPane.addMouseListener(this); layeredPane.addMouseMotionListener(this); //Add a chess board to the Layered Pane chessBoard = new JPanel(); layeredPane.add(chessBoard, JLayeredPane.DEFAULT_LAYER); chessBoard.setLayout( new GridLayout(8, 8) ); chessBoard.setPreferredSize( boardSize ); chessBoard.setBounds(0, 0, boardSize.width, boardSize.height); for (int i = 0; i < 64; i++) { JPanel square = new JPanel( new BorderLayout() ); chessBoard.add( square ); int row = (i / 8) % 2; if (row == 0) square.setBackground( i % 2 == 0 ? Color.blue : Color.white ); else square.setBackground( i % 2 == 0 ? Color.white : Color.blue ); } //Add a few pieces to the board JLabel piece = new JLabel( new ImageIcon("/home/vinod/amarexamples/chess.jpg") ); JPanel panel = (JPanel)chessBoard.getComponent(0); panel.add(piece); piece = new JLabel(new ImageIcon("/home/vinod/amarexamples/chess1.jpg")); panel = (JPanel)chessBoard.getComponent(15); panel.add(piece); piece = new JLabel(new ImageIcon("/home/vinod/amarexamples/king.jpg")); panel = (JPanel)chessBoard.getComponent(16); panel.add(piece); piece = new JLabel(new ImageIcon("/home/vinod/amarexamples/camel.jpg")); panel = (JPanel)chessBoard.getComponent(20); panel.add(piece); } public void mousePressed(MouseEvent e){ chessPiece = null; Component c = chessBoard.findComponentAt(e.getX(), e.getY()); if (c instanceof JPanel) return; Point parentLocation = c.getParent().getLocation(); xAdjustment = parentLocation.x - e.getX(); yAdjustment = parentLocation.y - e.getY(); chessPiece = (JLabel)c; chessPiece.setLocation(e.getX() + xAdjustment, e.getY() + yAdjustment); chessPiece.setSize(chessPiece.getWidth(), chessPiece.getHeight()); layeredPane.add(chessPiece, JLayeredPane.DRAG_LAYER); } //Move the chess piece around    public void mouseDragged(MouseEvent me) { if (chessPiece == null) return; chessPiece.setLocation(me.getX() + xAdjustment, me.getY() + yAdjustment); } //Drop the chess piece back onto the chess board public void mouseReleased(MouseEvent e) { if(chessPiece == null) return; chessPiece.setVisible(false); Component c = chessBoard.findComponentAt(e.getX(), e.getY()); if (c instanceof JLabel){ Container parent = c.getParent(); parent.remove(0); parent.add( chessPiece ); } else { Container parent = (Container)c; parent.add( chessPiece ); } chessPiece.setVisible(true); } public void mouseClicked(MouseEvent e) {    } public void mouseMoved(MouseEvent e) { } public void mouseEntered(MouseEvent e){    } public void mouseExited(MouseEvent e) {    } public static void main(String[] args) { JFrame frame = new ChessGameDemo(); frame.setDefaultCloseOperation(DISPOSE_ON_CLOSE ); frame.pack(); frame.setResizable(true); frame.setLocationRelativeTo( null ); frame.setVisible(true); } }

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