Question

I am struggling with writing a text-based adventure game with 3 classes. If someone could show me an example that would be great, thanks!

Answer 1

package Game;

import java.awt.*;

import java.awt.event.*;

import java.util.Random;

import sun.audio.*;

import java.io.*;

import javax.swing.*;

// Defines a class PlayMusic

class PlayMusic

{

// Method to play music

public static void music()

{

// Creates an object of class AudioPlayer

AudioPlayer MGP = AudioPlayer.player;

// Creates an object of class AudioStream

AudioStream BGM;

// Creates an object of class AudioData  

AudioData MD;

ContinuousAudioDataStream loop = null;

// try block begins

try

{

// Creates an audio stream from the Music.wav file

BGM = new AudioStream(new FileInputStream("F:/Workspace/Music.wav"));

// Gets the data and converts it to Audio stream

MD = BGM.getData();

// Loops Continuously to play the music

loop = new ContinuousAudioDataStream(MD);

}// End of try block

// Catch block to handle exception

catch(IOException error)

{

System.out.print("file not found");

}// End of catch block

// Calls the method to start music

MGP.start(loop);

}// End of method

}// End of class PlayMusic

// Defines class PlayGame

class PlayGame

{

// Declares container and component objects

JFrame jf;

JPanel jp1, jp2, jp3, mainP;

JLabel mainL, numberL, resultL;

JTextField resultT;

JButton calculateB, nextB;

// Random class object declared

Random rand;

// To store current level of the game

int level;

// To store first, second random number

int first, second;

// To store the calculate result and user current score

int result, score;

// To count number of questions asked

int counter;

// To store user name

String name;

// Default constructor definition

PlayGame()

{

// Calls the method to play the music

PlayMusic.music();

// Initializes level to 1

level = 1;

// Initializes score to 0

score = 0;

// Initializes question counter to 1

counter = 1;

// Creates Random class object

rand = new Random();

// Creates a frame

jf = new JFrame("Math Game");

// Creates a panels

jp1 = new JPanel();

jp2 = new JPanel();

jp3 = new JPanel();

mainP = new JPanel();

// Creates a labels

mainL = new JLabel("Level - " + level);

numberL = new JLabel();

resultL = new JLabel();

// Creates a text files

resultT = new JTextField(5);

// Creates a buttons

calculateB = new JButton("Show Result");

nextB = new JButton("Next Question");

// Adds main level to panel 1

jp1.add(mainL);

// Adds levels to panel 2

jp2.add(numberL);

jp2.add(resultT);

jp2.add(resultL);

// Adds buttons to panel 3

jp3.add(calculateB);

jp3.add(nextB);

// Adds panels main panel

mainP.add(jp1);

mainP.add(jp2);

mainP.add(jp3);

// Sets the layout of the main panel to 3 rows 1 column

mainP.setLayout(new GridLayout(3, 1));

// Adds the main panel to frame

jf.add(mainP);

// Sets the frame visible property to true

jf.setVisible(true);

// Set the size of the frame to width 400 and height 200

jf.setSize(400, 200);

// Sets the frame to center

jf.setLocationRelativeTo(null);

// Accepts user name

name = JOptionPane.showInputDialog("Enter your name: ");

// Calls the method to generate question

generateRandomNumber(level);

// Registers action listener to nextB button using anonymous class

nextB.addActionListener(new ActionListener()

{

// Overrides the actionPerformed() method of ActionListener interface

public void actionPerformed(ActionEvent ae)

{

// Clears the contents of result label and text field

resultT.setText("");

resultL.setText("");

// Calls the method to generate question

generateRandomNumber(level);

// Increase the question counter by one

counter++;

}// End of method

});// End of anonymous class

// Registers action listener to calculateB button using anonymous class

calculateB.addActionListener(new ActionListener()

{

// Overrides the actionPerformed() method of ActionListener interface

public void actionPerformed(ActionEvent ae)

{

// Checks if question counter is 3 set the level to 2

if(counter == 4)

level = 2;

// Otherwise checks if question counter is 6 set the level to 3

else if(counter == 7)

level = 3;

// Otherwise checks if question counter is 9 set the level to 4

else if(counter == 10)

level = 4;

// Otherwise checks if question counter is 12 set the level to 1

else if(counter == 13)

{

// Reset the level to 1

level = 1;

// Reset the question counter to 0

counter = 0;

// Displays error message

JOptionPane.showMessageDialog(jf, name + " Your Score: " + score,

"Result", JOptionPane.ERROR_MESSAGE);

// Reset the score to 0

score = 0;

}// End of else if condition

// Set the level number in main label

mainL.setText("Level - " + level);

// Checks if user entered result text field is null then display error message

if(resultT.getText() == "")

// Displays error message

JOptionPane.showMessageDialog(jf, name + " Please enter the result ",

"ERROR", JOptionPane.ERROR_MESSAGE);

// Otherwise user entered the answer

else

{

// Checks if calculated result is equals to user entered answer

if(result == Integer.parseInt(resultT.getText()))

{

// Increase the score by one

score++;

// Sets the congratulation message in result label

resultL.setText("Good Correct Answer");

}// End of if condition

// Otherwise wrong answer

else

// Sets the wrong message in result label and displays the corrent answer

resultL.setText("Sorry Wrong Answer" + "\n Correct Answer: " + result);

}// End of else

}// End of method

});// End of anonymous class

}// End of constructor

// Method to generate question

void generateRandomNumber(int currentLevel)

{

// Generates random number between 1 and 9 inclusive

first = rand.nextInt(9) + 1;

second = rand.nextInt(9) + 1;

// Checks if second number is greater than the first number then swap the numbers

if(second > first)

{

// Swapping process

int temp = first;

first = second;

second = temp;

}// End of if condition

// Checks if level is 1 then addition

if(currentLevel == 1)

{

// Sets the question to number label

numberL.setText(first + " + " + second);

// Calculates the result

result = first + second;

}// End of if condition

// Otherwise checks if level is 2 then subtraction

else if(currentLevel == 2)

{

// Sets the question to number label

numberL.setText(first + " - " + second);

// Calculates the result

result = first - second;

}// End of else if condition

// Otherwise checks if level is 3 then multiplication

else if(currentLevel == 3)

{

// Sets the question to number label

numberL.setText(first + " X " + second);

// Calculates the result

result = first * second;

}// End of else if condition

// Otherwise checks if level is 4 then division

else if(currentLevel == 4)

{

// Sets the question to number label

numberL.setText(first + " / " + second);

// Calculates the result

result = first / second;

}// End of else if condition

}// End of method

}// End of class PlayGame

// Driver class MathGame

public class MathGame

{

// main method definition

public static void main(String[] args)

{

// Calls the default constructor

new PlayGame();

}// End of main method

}// End of driver class MathGame

Input Enter your name: Mohan OK Cancel Math Game Level -1 9+8 17 Good Correct Answer Show Result Next Question 의 Math Game Level -1 6+4 5 Sorry Wrong Answer Correct Answer: 10 Show Result Next Question