Pong

/**
 * Source code untuk class Pong.
 *
 * @author Ahmad Lamaul Farid
 * @version 16 Desember 2020
 */

 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 = 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.BLUE);
           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)
      {
      }
 }