Pong
/**
* Write a description of class Pong here.
*
* @author (Ghannie Wijaya)
* @version (1.0)
*/
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 = 20;
}
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)
{
}
}
Ball
/**
* Write a description of class Ball here.
*
* @author (Ghannie Wijaya)
* @version (1.0)
*/
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);
}
}
Paddle
/**
* Write a description of class Paddle here.
*
* @author (Ghannie Wijaya)
* @version (1.0)
*/
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;
}
}
}
}
Renderer
/**
* Write a description of class Renderer here.
*
* @author (Ghannie Wijaya)
* @version (1.0)
*/
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);
}
}
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