import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.Timer;
import javax.swing.WindowConstants;

public class PongGame extends JComponent implements ActionListener, KeyListener {

	private int ballX = 400;
	private int ballY = 150;

	private int paddleX = 350;
	private int paddleY = 500;

	private boolean moveRight = false;
	private boolean moveLeft = false;

	public static void main(String args[]) {
		JFrame window = new JFrame("Pong");
		PongGame pongGame = new PongGame();
		window.add(pongGame);
		window.pack();
		window.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
		window.setSize(800, 600);
		window.setResizable(false);
		window.setLocationRelativeTo(null);
		window.setVisible(true);
		System.out.println("running");

		Timer timer = new Timer(50, pongGame);
		timer.start();

		window.addKeyListener(pongGame);
	}

	@Override
	protected void paintComponent(Graphics g) {
		//sky
		g.setColor(Color.cyan);
		g.fillRect(0, 0, 800, 600);

		//paddle
		g.setColor(Color.RED);
		g.fillRect(paddleX, paddleY, 100, 10);

		//ball
		g.setColor(Color.black);
		g.fillOval(ballX, ballY, 20, 20);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		//ballX = ballX + 5;
		//ballY = ballY + 7;

		if (moveRight == true) {
			movePaddleRight(paddleX);
		} else if (moveLeft == true) {
			movePaddleLeft(paddleX);
		}

		System.out.println("move left is:" + moveLeft + " move right is:" + moveRight);
		repaint();
	}

	@Override
	public void keyTyped(KeyEvent e) {


	}

	@Override
	public void keyPressed(KeyEvent e) {
		if (e.getKeyCode() == 65) {
			System.out.println("tirggered to move left");
			moveLeft = true;
		} else if (e.getKeyCode() == 68) {
			System.out.println("Triggered to move right");
			moveRight = true;
		}

	}

	@Override
	public void keyReleased(KeyEvent e) {
		if (e.getKeyCode() == 65) {
			moveLeft = false;
		} else if (e.getKeyCode() == 68) {
			moveRight = false;
		}

	}

	public void movePaddleRight(int xpos) {
		paddleX = xpos + 3;
		repaint();
	}
	public void movePaddleLeft(int xpos) {
		paddleX = xpos - 3;
		repaint();
	}

}