Pong Java

Tugas PBO-B

Object Frist with Java : Pong Java

Nama : Hendra Ramadani

NRP : 05111740000055

Kelas : PBO-B

Dikembangkan pada tahun 1972 oleh Atari inc. Game pong merupakan salah satu game arkade pertama. Pada awalnya game ini dibuat sebagai latihan bagi Allan Alcom yang ditugaskan padanya oleh co-founder Atari Nolan Bushnell. Dirilisnya game ini menginspirasi banyak perusahaan game untuk membuat game-game arkade lainnya. Dan pada kesempatan kali ini saya akan mengoding game ini pada IDE BlueJ.

Berikut diagram class pada BlueJ:

Sebelum memulai membuat class-classnya dibuat package "pong" terlebih dahulu. Caranya pada BlueJ klik Edit->New Package ...-> beri nama "pong". Kemudian muncul kotak berwarna ungu pada diagram, klik dua kali kotak tersebut. Setelah itu barulah kita mulai membuat classnya.

Source Code :

1. Class Pong

	package pong;
	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 = 1200, 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("Pong");
	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.GREEN);
	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 with 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 gistfile1.txt hosted with ❤ by GitHub
2. Class Renderer

	package pong;
	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 gistfile1.txt hosted with ❤ by GitHub
3. Class Ball

	package pong;
	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.BLACK);
	g.fillOval(x, y, width, height);
	}
	}

view raw gistfile1.txt hosted with ❤ by GitHub
4. Class Paddle

	package pong;
	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 gistfile1.txt hosted with ❤ by GitHub

Demonstrasi: