Tugas 8 - Game Pong Java

Tugas yang diberikan kali ini ialah mengenai aplikasi sebuah game sederhana Pong. Game pong ini merupakan  permainan arcade yang dioperasikan dengan koin yang dikembangkan oleh Atari Inc. pada tahun 1972. Pong merupakan permainan atau olahraga tenis meja. Game ini menjadi permainan yang sangat sukses dan merupakan permulaan dari industri video games.

Berikut merupakan dokumentasi dari program Pong.

Source Code

1. Class Pong

	/**
	* Class untuk membuat pilihan permainan, bot, score dan pengaturan dasar game.
	*
	* @author Fidhia Ainun Khofifah
	* @version 16/12/2020
	*/
	import java.awt.BasicStroke;
	import java.awt.Color;
	import java.awt.Font;
	import java.awt.Graphics2D;
	import java.awt.RenderingHints;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event. KeyEvent;
	import java.awt.event.KeyListener;
	import java.util.Random;
	import javax.swing.JFrame;
	import javax.swing.Timer;
	public class Pong implements ActionListener, KeyListener
	{
	public static Pong pong;
	public int width = 700, height = 700;
	public Renderer renderer;
	public Paddle player1;
	public Paddle player2;
	public Ball ball;
	public boolean bot = false, selectingDifficulty;
	public boolean w, s, up, down;
	public int gameStatus = 0, scoreLimit = 7, playerWon; //0 = Menu, 1 = Paused, 2 = Playing, 3 = Over
	public int botDifficulty, botMoves, botCooldown = 0;
	public Random random;
	public JFrame jframe;
	public Pong()
	{
	Timer timer = new Timer(20, this);
	random = new Random();
	jframe = new JFrame("Pond");
	renderer = new Renderer();
	jframe.setSize(width+15, height+35);
	jframe.setVisible(true);
	jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	jframe.add(renderer);
	jframe.addKeyListener(this);
	timer.start();
	}
	public void start()
	{
	gameStatus = 2;
	player1 = new Paddle(this, 1);
	player2 = new Paddle(this, 2);
	ball = new Ball(this);
	}
	public void update()
	{
	if(player1.score >= scoreLimit)
	{
	playerWon = 1;
	gameStatus = 3;
	}
	if(player2.score >= scoreLimit)
	{
	gameStatus = 3;
	playerWon = 2;
	}
	if(w)
	{
	player1.move(true);
	}
	if(s)
	{
	player1.move(false);
	}
	if(!bot)
	{
	if(up)
	{
	player2.move(true);
	}
	if(down)
	{
	player2.move(false);
	}
	}
	else
	{
	if(botCooldown > 0)
	{
	botCooldown--;
	if(botCooldown==0)
	{
	botMoves = 0;
	}
	}
	if(botMoves < 10)
	{
	if(player2.y + player2.height/2 < ball.y)
	{
	player2.move(false);
	botMoves++;
	}
	if(player2.y + player2.height/2 > ball.y)
	{
	player2.move(true);
	botMoves++;
	}
	if(botDifficulty==0)
	{
	botCooldown = 20;
	}
	if(botDifficulty==1)
	{
	botCooldown = 15;
	}
	if(botDifficulty==2)
	{
	botCooldown = 10;
	}
	}
	}
	ball.update(player1, player2);
	}
	public void render(Graphics2D g)
	{
	g.setColor(Color.GRAY);
	g.fillRect(0, 0, width, height);
	g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
	if(gameStatus==0)
	{
	g.setColor(Color.WHITE);
	g.setFont(new Font("Arial", 1, 50));
	g.drawString("PONG", width/2 - 75, 50);
	if(!selectingDifficulty)
	{
	g.setFont(new Font("Arial", 1, 30));
	g.drawString("Press Space to Play!", width/2 - 150, height/2 - 25);
	g.drawString("Press Shift to Play Bot", width/2 - 200, height/2 + 25);
	g.drawString("<< Score Limit: " + scoreLimit + " >>", width/2 -150, height/2 + 75);
	}
	}
	if(selectingDifficulty)
	{
	String string = botDifficulty == 0? "Easy" : (botDifficulty==1 ? "Medium" : "Hard");
	g.setFont(new Font("Arial", 1, 30));
	g.drawString("<< Bot Difficulty: " + string + " >>", width/2 - 180, height/2 - 25);
	g.drawString("Press Space to Play", width/2 - 150, height/2 + 25);
	}
	if(gameStatus==1)
	{
	g.setColor(Color.WHITE);
	g.setFont(new Font("Arial", 1, 50));
	g.drawString("PAUSED", width/2 - 103, height/2 - 25);
	}
	if(gameStatus==1 || gameStatus==2)
	{
	g.setColor(Color.WHITE);
	g.setStroke(new BasicStroke(5f));
	g.drawLine(width/2, 0, width/2, height);
	g.setStroke(new BasicStroke(2f));
	g.drawOval(width/2 - 150, height/2 - 150, 300, 300);
	g.setFont(new Font("Arial", 1, 50));
	g.drawString(String.valueOf(player1.score), width/2 - 90, 50);
	g.drawString(String.valueOf(player2.score), width/2 + 65, 50);
	player1.render(g);
	player2.render(g);
	ball.render(g);
	}
	if(gameStatus==3)
	{
	g.setColor(Color.WHITE);
	g.setFont(new Font("Arial", 1, 50));
	g.drawString("PONG", width/2 - 75, 50);
	if(bot && playerWon == 2)
	{
	g.drawString("The Bot Wins!", width/2 - 170, 200);
	}
	else
	{
	g.drawString("Player " + playerWon + " Wins!", width/2 - 165, 200);
	}
	g.setFont(new Font("Arial", 1, 30));
	g.drawString("Press Space to Play Again", width/2 - 185, height/2 - 25);
	g.drawString("Press ESC for Menu", width/2 - 140, height/2 + 25);
	}
	}
	@Override
	public void actionPerformed(ActionEvent e)
	{
	if (gameStatus == 2)
	{
	update();
	}
	renderer.repaint();
	}
	public static void main(String[] args)
	{
	pong = new Pong();
	}
	@Override
	public void keyPressed(KeyEvent e)
	{
	int id = e.getKeyCode();
	if (id == KeyEvent.VK_W)
	{
	w = true;
	}
	else if (id == KeyEvent.VK_S)
	{
	s = true;
	}
	else if (id == KeyEvent.VK_UP)
	{
	up = true;
	}
	else if (id == KeyEvent.VK_DOWN)
	{
	down = true;
	}
	else if (id == KeyEvent.VK_RIGHT)
	{
	if (selectingDifficulty)
	{
	if (botDifficulty < 2)
	{
	botDifficulty++;
	}
	else
	{
	botDifficulty = 0;
	}
	}
	else if (gameStatus == 0)
	{
	scoreLimit++;
	}
	}
	else if (id == KeyEvent.VK_LEFT)
	{
	if (selectingDifficulty)
	{
	if (botDifficulty > 0)
	{
	botDifficulty--;
	}
	else
	{
	botDifficulty = 2;
	}
	}
	else if (gameStatus == 0 && scoreLimit > 1)
	{
	scoreLimit--;
	}
	}
	else if (id == KeyEvent.VK_ESCAPE && (gameStatus == 2 || gameStatus == 3))
	{
	gameStatus = 0;
	}
	else if (id == KeyEvent.VK_SHIFT && gameStatus == 0)
	{
	bot = true;
	selectingDifficulty = true;
	}
	else if (id == KeyEvent.VK_SPACE)
	{
	if (gameStatus == 0 || gameStatus == 3)
	{
	if (!selectingDifficulty)
	{
	bot = false;
	}
	else
	{
	selectingDifficulty = false;
	}
	start();
	}
	else if (gameStatus == 1)
	{
	gameStatus = 2;
	}
	else if (gameStatus == 2)
	{
	gameStatus = 1;
	}
	}
	}
	@Override
	public void keyReleased(KeyEvent e)
	{
	int id = e.getKeyCode();
	if (id == KeyEvent.VK_W)
	{
	w = false;
	}
	else if (id == KeyEvent.VK_S)
	{
	s = false;
	}
	else if (id == KeyEvent.VK_UP)
	{
	up = false;
	}
	else if (id == KeyEvent.VK_DOWN)
	{
	down = false;
	}
	}
	@Override
	public void keyTyped(KeyEvent e)
	{
	}
	}

view raw Pong.java hosted with ❤ by GitHub

2. Class Paddle

	/**
	* Class yang memberi ukuran, kecepatan dan juga batas gerak Paddle.
	*
	* @author Fidhia Ainun Khofifah
	* @version 16/12/2020
	*/
	import java.awt.Color;
	import java.awt.Graphics;
	public class Paddle
	{
	public int paddleNumber;
	public int x, y, width = 50, height = 250;
	public int score;
	public Paddle(Pong pong, int paddleNumber)
	{
	this.paddleNumber = paddleNumber;
	if(paddleNumber==1)
	{
	this.x = 0;
	}
	if(paddleNumber==2)
	{
	this.x = pong.width - width;
	}
	this.y = pong.height/2 - this.height/2;
	}
	public void render(Graphics g)
	{
	g.setColor(Color.WHITE);
	g.fillRect(x, y, width, height);
	}
	public void move(boolean up)
	{
	int speed = 15;
	if(up)
	{
	if(y-speed > 0)
	{
	y -= speed;
	}
	else
	{
	y = 0;
	}
	}
	else
	{
	if(y+height+speed < Pong.pong.height)
	{
	y+=speed;
	}
	else
	{
	y = Pong.pong.height - height;
	}
	}
	}
	}

view raw Paddle.java hosted with ❤ by GitHub

3. Class Ball

	/**
	* Class mengatur ukuran, pergerakan, kecepatan dan warna bola.
	*
	* @author Fidhia Ainun Khofifah
	* @version 16/12/2020
	*/
	import java.awt.Color;
	import java.awt.Graphics;
	import java.util.Random;
	public class Ball
	{
	public int x, y, width=25, height=25;
	public int motionX, motionY;
	public Random random;
	private Pong pong;
	public int amountOfHits;
	public Ball(Pong pong)
	{
	this.pong = pong;
	this.random = new Random();
	spawn();
	}
	public void update(Paddle paddle1, Paddle paddle2)
	{
	int speed = 5;
	this.x += motionX*speed;
	this.y += motionY * speed;
	if (this.y + height - motionY > pong.height || this.y + motionY < 0)
	{
	if (this.motionY < 0)
	{
	this.y = 0;
	this.motionY = random.nextInt(4);
	if (motionY == 0)
	{
	motionY = 1;
	}
	}
	else
	{
	this.motionY = -random.nextInt(4);
	this.y = pong.height - height;
	if (motionY == 0)
	{
	motionY = -1;
	}
	}
	}
	if (checkCollision(paddle1) == 1)
	{
	this.motionX = 1 + (amountOfHits / 5);
	this.motionY = -2 + random.nextInt(4);
	if (motionY == 0)
	{
	motionY = 1;
	}
	amountOfHits++;
	}
	else if (checkCollision(paddle2) == 1)
	{
	this.motionX = -1 - (amountOfHits / 5);
	this.motionY = -2 + random.nextInt(4);
	if (motionY == 0)
	{
	motionY = 1;
	}
	amountOfHits++;
	}
	if (checkCollision(paddle1) == 2)
	{
	paddle2.score++;
	spawn();
	}
	else if (checkCollision(paddle2) == 2)
	{
	paddle1.score++;
	spawn();
	}
	}
	public void spawn()
	{
	this.amountOfHits = 0;
	this.x = pong.width / 2 - this.width / 2;
	this.y = pong.height / 2 - this.height / 2;
	this.motionY = -2 + random.nextInt(4);
	if (motionY == 0)
	{
	motionY = 1;
	}
	if (random.nextBoolean())
	{
	motionX = 1;
	}
	else
	{
	motionX = -1;
	}
	}
	public int checkCollision(Paddle paddle)
	{
	if (this.x < paddle.x + paddle.width && this.x + width > paddle.x && this.y < paddle.y + paddle.height && this.y + height > paddle.y)
	{
	return 1; //bounce
	}
	else if ((paddle.x > x && paddle.paddleNumber == 1) || (paddle.x < x - width && paddle.paddleNumber == 2))
	{
	return 2; //score
	}
	return 0; //nothing
	}
	public void render(Graphics g)
	{
	g.setColor(Color.WHITE);
	g.fillOval(x, y, width, height);
	}
	}

view raw Ball.java hosted with ❤ by GitHub

4. Class Renderer

	/**
	* Class dasar panel.
	*
	* @author Fidhia Ainun Khofifah
	* @version 16/12/2020
	*/
	import java.awt.Graphics;
	import java.awt.Graphics2D;
	import javax.swing.JPanel;
	public class Renderer extends JPanel
	{
	private static final long serialVersionUID = 1L;
	@Override
	protected void paintComponent(Graphics g)
	{
	super.paintComponent(g);
	Pong.pong.render((Graphics2D) g);
	}
	}

view raw Renderer.java hosted with ❤ by GitHub

Run Code

1. Klik kanan pada Class Pong, lalu klik void.

2. Lalu, panel game akan keluar.

3. Kemudian, mainkan game.

Sekian dari dokumentasi tugas PBO kali ini.