Java – Swing Applications 02
TEXT-BASED ADVENTURE GAME IN A GUI

TEXT-BASED ADVENTURE GAME IN GUI – VERSION 2

VERSION 2 DESCRIPTION

This is a basic GUI program that shows three sections of a game:

• a start screen,
• a game screen (where the game will take place)
• an end screen.

A button allows you to go from one to the other.

VERSION 2 FILES

The following three images are needed in your Eclipse project.

gameOfGames.jpg

gameOver.jpg

00-forest.png

VERSION 2 CODE

//Warning: Three images are required.

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.ImageIcon; //I had to add this import manually. Why?

public class GameFrame extends JFrame implements ActionListener

{

public Container gc;

//start screen

public JPanel startPanel;

public JButton startButton;

public BufferedImage startImage;

public JLabel startImageLabel;

//game screen

public JPanel gamePanel;

public JTextField gameTextField;

public JButton gameButton;

public JTextArea gameTextArea;

public BufferedImage gameImage;

public JLabel gameImageLabel;

//end screen

public JPanel endPanel;

public JButton restartButton;

public BufferedImage gameOverImage;

public JLabel gameOverImageLabel;

public GameFrame()

{

gc = this.getContentPane();

showStartScreen();

this.setTitle("Game of Games - Version 2");

this.setSize(500, 500);

this.setVisible(true);

}

public void showStartScreen()

{

try

{

startPanel = new JPanel();

startImage = ImageIO.read(new File("gameOfGames.jpg"));

startImageLabel = new JLabel(new ImageIcon(startImage));

startPanel.add(startImageLabel);

startButton = new JButton("Start");

startButton.addActionListener(this);

startPanel.add(startButton);

gc.add(startPanel);

revalidate(); //needed after replacing a component

repaint(); //needed after replacing a component

}

catch (IOException e)

{

System.out.println("Error 1. Image file missing?");

}

}

public void showGameScreen()

{

try

{

gamePanel = new JPanel();

gameImage = ImageIO.read(new File("00-forest.png"));

gameImageLabel = new JLabel(new ImageIcon(gameImage));

gamePanel.add(gameImageLabel);

gameTextArea = new JTextArea(5, 30);

gameTextArea.setText("Welcome to the game. There isn't much here yet. Enjoy.");

gameTextArea.setEditable(false);

gamePanel.add(gameTextArea);

gameTextField = new JTextField(25);

gamePanel.add(gameTextField);

gameButton = new JButton("Go");

gameButton.addActionListener(this);

gamePanel.add(gameButton);

gc.add(gamePanel);

revalidate(); //needed after replacing a component

repaint(); //needed after replacing a component

}

catch (IOException e)

{

System.out.println("Error 2. Image file missing?");

}

}

public void showEndScreen()

{

try

{

endPanel = new JPanel();

gameOverImage = ImageIO.read(new File("gameOver.jpg"));

gameOverImageLabel = new JLabel(new ImageIcon(gameOverImage));

endPanel.add(gameOverImageLabel);

restartButton = new JButton("Restart");

restartButton.addActionListener(this);

endPanel.add(restartButton);

gc.add(endPanel);

revalidate(); //needed after replacing a component

repaint(); //needed after replacing a component

}

catch (IOException e)

{

System.out.println("Error 3. Image file missing?");

}

}

public static void main(String[] args)

{

GameFrame game = new GameFrame();

}

@Override

public void actionPerformed(ActionEvent e)

{

if (e.getSource() == startButton)

{

gc.removeAll();

showGameScreen();

}

else if (e.getSource() == gameButton)

{

gc.removeAll();

showEndScreen();

}

else if (e.getSource() == restartButton)

{

gc.removeAll();

showStartScreen();

}

}

}