Slider Puzzle problems

Slider Puzzle problems

This is my slider puzzle game. So far it can only do 3x3 games. When I try
and pass the variables l and w (length and width) of the board it doesn't
work. It only works when i set the variables ROWS and COLS as finals. When
I try and change it I get errors. I'm not sure what to do, any help would
be appreciated.
Currently the user can input values that can't do anything at the moment.
When the game is started, a 3x3 board is generated. The user can restart
the game with a different scrambled board but the buttons that solve the
board and the buttons that reset the board to the original state do not
work yet.
public class SlidePuzzle {
public static void main(String[] args)
{
JFrame window = new JFrame("Slide Puzzle");
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String length = JOptionPane.showInputDialog("Length");
String width = JOptionPane.showInputDialog("Width");
int l = Integer.parseInt(length);
int w = Integer.parseInt(width);
window.setContentPane(new SlidePuzzleGUI());
window.pack();
window.show();
window.setResizable(false);
}
}
public class SlidePuzzleGUI extends JPanel
{
private GraphicsPanel _puzzleGraphics;
private SlidePuzzleModel _puzzleModel = new SlidePuzzleModel();
This class contains the GUI for the Slider Puzzle
public SlidePuzzleGUI() {
JButton newGameButton = new JButton("New Game");
JButton resetButton = new JButton("Reset");
JButton solveButton = new JButton("I GIVE UP :(");
resetButton.addActionListener(new ResetAction());
newGameButton.addActionListener(new NewGameAction());
JPanel controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel.add(newGameButton);
controlPanel.add(resetButton);
controlPanel.add(solveButton);
_puzzleGraphics = new GraphicsPanel();
this.setLayout(new BorderLayout());
this.add(controlPanel, BorderLayout.NORTH);
this.add(_puzzleGraphics, BorderLayout.CENTER);
}
This is the graphics panel
class GraphicsPanel extends JPanel implements MouseListener {
private static final int ROWS = 3;
private static final int COLS = 3;
private static final int CELL_SIZE = 80;
private Font _biggerFont;
public GraphicsPanel() {
_biggerFont = new Font("SansSerif", Font.BOLD, CELL_SIZE/2);
this.setPreferredSize(
new Dimension(CELL_SIZE * COLS, CELL_SIZE*ROWS));
this.setBackground(Color.black);
this.addMouseListener(this);
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
for (int r=0; r<ROWS; r++) {
for (int c=0; c<COLS; c++) {
int x = c * CELL_SIZE;
int y = r * CELL_SIZE;
String text = _puzzleModel.getFace(r, c);
if (text != null) {
g.setColor(Color.gray);
g.fillRect(x+2, y+2, CELL_SIZE-4, CELL_SIZE-4);
g.setColor(Color.black);
g.setFont(_biggerFont);
g.drawString(text, x+20, y+(3*CELL_SIZE)/4);
}
}
}
}
public void mousePressed(MouseEvent e) {
int col = e.getX()/CELL_SIZE;
int row = e.getY()/CELL_SIZE;
if (!_puzzleModel.moveTile(row, col)) {
Toolkit.getDefaultToolkit().beep();
}
this.repaint();
}
public void mouseClicked (MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
public void mouseEntered (MouseEvent e) {}
public void mouseExited (MouseEvent e) {}
}
public class NewGameAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
_puzzleModel.reset();
_puzzleGraphics.repaint();
}
}
public class ResetAction implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
_puzzleModel.tryAgain();
_puzzleGraphics.repaint();
}
}
public class solveAction implements ActionListener
{
@Override
public void actionPerformed(ActionEvent e)
{
_puzzleModel.solve();
_puzzleGraphics.repaint();
}
}
}
public class SlidePuzzleModel {
private static final int ROWS = 3;
private static final int COLS = 3;
private Tile[][] _contents;
private Tile[][] _solved;
private Tile _emptyTile;
public SlidePuzzleModel() {
_contents = new Tile[ROWS][COLS];
reset();
}
String getFace(int row, int col) {
return _contents[row][col].getFace();
}
public void reset() {
for (int r=0; r<ROWS; r++) {
for (int c=0; c<COLS; c++) {
_contents[r][c] = new Tile(r, c, "" + (r*COLS+c+1));
}
}
_emptyTile = _contents[ROWS-1][COLS-1];
_emptyTile.setFace(null);
for (int r=0; r<ROWS; r++) {
for (int c=0; c<COLS; c++) {
exchangeTiles(r, c, (int)(Math.random()*ROWS)
, (int)(Math.random()*COLS));
}
}
}
public void tryAgain()
{
}
public void solve()
{
for (int i = 1; i < ROWS+1;i++)
{
for(int j = 1; j < COLS+1;j++)
{
exchangeTiles(i, j, i, j);
}
}
}
public boolean moveTile(int r, int c) {
return checkEmpty(r, c, -1, 0) || checkEmpty(r, c, 1, 0)
|| checkEmpty(r, c, 0, -1) || checkEmpty(r, c, 0, 1);
}
private boolean checkEmpty(int r, int c, int rdelta, int cdelta) {
int rNeighbor = r + rdelta;
int cNeighbor = c + cdelta;
if (isLegalRowCol(rNeighbor, cNeighbor)
&& _contents[rNeighbor][cNeighbor] == _emptyTile) {
exchangeTiles(r, c, rNeighbor, cNeighbor);
return true;
}
return false;
}
public boolean isLegalRowCol(int r, int c) {
return r>=0 && r<ROWS && c>=0 && c<COLS;
}
private void exchangeTiles(int r1, int c1, int r2, int c2) {
Tile temp = _contents[r1][c1];
_contents[r1][c1] = _contents[r2][c2];
_contents[r2][c2] = temp;
}
public boolean isGameOver() {
for (int r=0; r<ROWS; r++) {
for (int c=0; c<ROWS; c++) {
Tile trc = _contents[r][c];
return trc.isInFinalPosition(r, c);
}
}
return true;
}
}
class Tile {
private int _row;
private int _col;
private String _face;
public Tile(int row, int col, String face) {
_row = row;
_col = col;
_face = face;
}
public void setFace(String newFace) {
_face = newFace;
}
public String getFace() {
return _face;
}
public boolean isInFinalPosition(int r, int c) {
return r==_row && c==_col;
}
}
How would I make it so that the user can specify dimensions of the game
board?
EDIT public class SlidePuzzle {
public static void main(String[] args)
{
JFrame window = new JFrame("Slide Puzzle");
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String length = JOptionPane.showInputDialog("Length");
String width = JOptionPane.showInputDialog("Width");
int l = Integer.parseInt(length);
int w = Integer.parseInt(width);
window.setContentPane(new SlidePuzzleGUI());
window.pack();
window.show();
window.setResizable(false);
}
} public class SlidePuzzleGUI extends JPanel {
private GraphicsPanel _puzzleGraphics;
private SlidePuzzleModel _puzzleModel = new SlidePuzzleModel();
public SlidePuzzleGUI(int l, int w) {
JButton newGameButton = new JButton("New Game");
JButton resetButton = new JButton("Reset");
JButton solveButton = new JButton("I GIVE UP :(");
resetButton.addActionListener(new ResetAction());
newGameButton.addActionListener(new NewGameAction());
JPanel controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
controlPanel.add(newGameButton);
controlPanel.add(resetButton);
controlPanel.add(solveButton);
_puzzleGraphics = new GraphicsPanel(l,w);
this.setLayout(new BorderLayout());
this.add(controlPanel, BorderLayout.NORTH);
this.add(_puzzleGraphics, BorderLayout.CENTER);
}
class GraphicsPanel extends JPanel implements MouseListener {
private int ROWS;
private int COLS;
private static final int CELL_SIZE = 80;
private Font _biggerFont;
public GraphicsPanel(int l, int w) {
_biggerFont = new Font("SansSerif", Font.BOLD, CELL_SIZE/2);
this.setPreferredSize(
new Dimension(CELL_SIZE * COLS, CELL_SIZE*ROWS));
this.setBackground(Color.black);
this.addMouseListener(this);
ROWS = l;
COLS = w;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
for (int r=0; r<ROWS; r++) {
for (int c=0; c<COLS; c++) {
int x = c * CELL_SIZE;
int y = r * CELL_SIZE;
String text = _puzzleModel.getFace(r, c);
if (text != null) {
g.setColor(Color.gray);
g.fillRect(x+2, y+2, CELL_SIZE-4, CELL_SIZE-4);
g.setColor(Color.black);
g.setFont(_biggerFont);
g.drawString(text, x+20, y+(3*CELL_SIZE)/4);
}
}
}
}
public void mousePressed(MouseEvent e) {
int col = e.getX()/CELL_SIZE;
int row = e.getY()/CELL_SIZE;
if (!_puzzleModel.moveTile(row, col)) {
Toolkit.getDefaultToolkit().beep();
}
this.repaint();
}
public void mouseClicked (MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
public void mouseEntered (MouseEvent e) {}
public void mouseExited (MouseEvent e) {}
}
public class NewGameAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
_puzzleModel.reset();
_puzzleGraphics.repaint();
}
}
public class ResetAction implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
_puzzleModel.tryAgain();
_puzzleGraphics.repaint();
}
}
public class solveAction implements ActionListener
{
@Override
public void actionPerformed(ActionEvent e)
{
_puzzleModel.solve();
_puzzleGraphics.repaint();
}
}
}