/**
* Callback from the Grid objects, for when the button gets pressed. This is really an example of
* cyclic dependency, but, we'd need to use some more object-oriented features to do a good job
* fixing it.
*
* @param grid Grid object that was clicked on.
* @param row row of the grid that was clicked
* @param column column of the grid that was clicked
*/
public void gridPress(Grid grid, int row, int column) {
if (grid == humanGrid) {
game.selectHumanGridSquare(row, column);
} else {
game.selectComputerGridSquare(row, column);
}
updateStatus();
repaint();
}
/**
* Callback used to respond to button presses.
*
* @param e event capturing information about the button press.
*/
public void actionPerformed(ActionEvent e) {
if (e.getSource() == hButton) {
game.setHorizontal(true);
}
if (e.getSource() == vButton) {
game.setHorizontal(false);
}
updateStatus();
}
/** Update the status of the GUI based on any changes in the game object. */
private void updateStatus() {
if (game.donePlacingShips()) {
// Kill the ship highlight and disable the vertical/horizontal buttons.
humanGrid.setHoverShape(null);
hButton.setEnabled(false);
vButton.setEnabled(false);
} else {
int len = game.placingLength();
boolean horiz = game.placingHorizontal();
humanGrid.setHoverShape(new Dimension(horiz ? len : 1, horiz ? 1 : len));
}
message.setText(game.getStatus());
repaint();
}
/**
* Make a GUI for the battleship game.
*
* @param game Game object that keeps up with the current state of the game.
*/
public BattleshipGUI(Battleship game) {
this.game = game;
this.game = game;
// Ships are visible on the human grid but not on the computer grid
// (last argument)
humanGrid = new Grid(game.getHumanBoard(), this, true);
computerGrid = new Grid(game.getComputerBoard(), this, false);
setTitle("Battleship Game");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLayout(new BorderLayout());
// Add a message field centered below the game
Box gamePanel = new Box(BoxLayout.X_AXIS);
add(gamePanel, BorderLayout.CENTER);
message = new JLabel("Game begins", JLabel.CENTER);
message.setFont(DEFAULT_FONT);
add(message, BorderLayout.SOUTH);
// Add human and computer panels to the game; the human panel has a
// title, grid, and buttons; the computer panel has only a title and a
// grid
JPanel human = new JPanel();
human.setLayout(new BoxLayout(human, BoxLayout.Y_AXIS));
JPanel computer = new JPanel();
computer.setLayout(new BoxLayout(computer, BoxLayout.Y_AXIS));
human.setAlignmentY(Component.TOP_ALIGNMENT);
gamePanel.add(human);
gamePanel.add(Box.createRigidArea(new Dimension(5, 0)));
computer.setAlignmentY(Component.TOP_ALIGNMENT);
gamePanel.add(computer);
// Add three parts to the human panel
JLabel humanLabel = new JLabel("Human", JLabel.CENTER);
humanLabel.setFont(DEFAULT_FONT);
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.X_AXIS));
human.add(humanLabel);
human.add(humanGrid);
human.add(buttonPanel);
// Set up the buttons
hButton = new JButton("Horizontal");
hButton.setFont(DEFAULT_FONT);
hButton.addActionListener(this);
vButton = new JButton("Vertical");
vButton.setFont(DEFAULT_FONT);
vButton.addActionListener(this);
buttonPanel.add(hButton);
buttonPanel.add(vButton);
// Add two parts to the computer panel
JLabel computerLabel = new JLabel("Computer", JLabel.CENTER);
computerLabel.setFont(DEFAULT_FONT);
computer.add(computerLabel);
computer.add(computerGrid);
updateStatus();
pack();
setVisible(true);
}
