PBO - Game Pong

Pong adalah permainan video generasi pertama yang dirilis sebagai permainan arkade yang dioperasikan dengan koin yang dikembangkan oleh Atari Inc. pada tanggal 29 November, 1972.Pong didasari dari permainan atau olahraga tenis meja (Ping pong), nama permainan ini berasal dari suara yang dihasilkan ketika memukul bola ping pong.Kata Pong telah didaftarkan sebagai merek dari Atari Interactive.

Pong dengan cepat menjadi permainan komersial pertama yang sangat sukses, dan merupakan permulaan dari industri permainan video. Tak lama setelah dirilis, beberapa perusahaan berusaha menyalin permainan Pong, dan merilis beberapa permainan baru. Sehingga, Atari memberanikan pegawainya untuk membuat permainan yang lebih inovatif. Beberapa sekuel muncul dengan permainan yang sama, namun dengan fitur baru. Pada permulaan Natal 1975, Atari secara eksklusif merilis versi rumahan Pong via toko ritel Sears.

Pada materi PBO kali ini, kita akan membuat game Pong dengan Java.

Script

	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

	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

	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("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 = 1;
	}
	if (botDifficulty == 1)
	{
	botCooldown = 15;
	}
	if (botDifficulty == 2)
	{
	botCooldown = 10;
	}
	}
	}

	ball.update(player1, player2);
	}

	public void render(Graphics2D g)
	{
	g.setColor(Color.BLACK);
	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 Pong.java hosted with ❤ by GitHub

	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);
	}
	}