Game Pong

Membuat Game Pong

Menggunakan Java

Untuk membuat game sederhana berupa game Pong, maka dibutuhkan beberapa kelas yakni

1. Ball untuk bola

2. Paddle untuk pemukul

3. Render untuk merender grafiknya

4. Pong untuk meload seluruh nya.

Berikut kelasnya

1. Ball

 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);  
      }  
 }  

2. Paddle

 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;  
                }  
           }  
      }  
 }  

3. Render

 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);  
      }  
 }

4. 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 = 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)  
      {  
      }  
 }  

Berikut screenshoot dari projectnya