import javax.swing.JPanel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.Graphics;
import java.awt.Color;
import javax.swing.Timer;
import java.awt.Rectangle;
import java.awt.Graphics2D;
import java.awt.Font;

public class Gameplay extends JPanel implements KeyListener, ActionListener
{
    private boolean play = false;
    private int score = 0;
    private int totalBricks = 21;
    private Timer timer;
    private int delay = 8;
    private int playerX = 310;
    private int ballposX = 120;
    private int ballposY = 350;
    private int ballXdir = -1;
    private int ballYdir = -2;
    
    private MapGenerator map;

    public Gameplay()
    {
        map = new MapGenerator (3, 7);
        addKeyListener(this);
        setFocusable(true);
        setFocusTraversalKeysEnabled(false);
        
        timer = new Timer(delay, this);
        timer.start();
    }
    
    public void paint (Graphics g)
    {
        // Background
        g.setColor(Color.black);
        g.fillRect (1,1, 692, 592);
                
        // Drawing Map
        map.draw ((Graphics2D)g);
        
        // Borders
        g.setColor (Color.yellow);
        g.fillRect (0,0, 3, 592);
        g.fillRect (0,0, 692, 3);
        g.fillRect (691,0, 3, 592);
                
        // scores
        g.setColor (Color.WHITE);
        g.setFont (new Font("sans-serif", Font.BOLD, 25));
        g.drawString (""+score, 520, 30);
        
        // Paddle
        g.setColor (Color.green);
        g.fillRect (playerX, 525, 80, 40); //550, 100, 8
        
        // Ball
        g.setColor (Color.yellow);
        g.fillOval (ballposX, ballposY, 20, 20);
        
        if (totalBricks <= 0)
        {
            play = false;
            ballXdir = 0;
            ballYdir = 0;
            g.setColor (Color.yellow);
            g.setFont (new Font("serif", Font.BOLD, 25));
            g.drawString ("You won! ", 190, 300);
            g.drawString ("Press Enter to Restart", 230, 350); 
        }
        
        // game Over
        if (ballposY > 570)
        {
            play = false;
            ballXdir = 0;
            ballYdir = 0;
            g.setColor (Color.RED);
            g.setFont (new Font("serif", Font.BOLD, 25));
            g.drawString ("Game Over, Scores: ", 190, 300);
            g.drawString ("Press Enter to Restart", 230, 350);
        }
        
        g.dispose();
    }
    
    @Override
    public void actionPerformed (ActionEvent e)
    {
        timer.start();
        
        if (play)
        {
            if (new Rectangle (ballposX, ballposY, 20, 20).intersects (new Rectangle(playerX, 525, 80, 40)))
            {
                ballYdir = -ballYdir;
            }
            
            for (int i = 0; i < map.map.length; i++)
            {
                for (int j = 0; j < map.map[0].length; j++)
                {
                    if (map.map[i][j] > 0)
                    {
                        int brickX = j* map.brickWidth + 80;
                        int brickY = i * map.brickHeight + 50;
                        int brickWidth = map.brickWidth;
                        int brickHeight = map.brickHeight;
                        
                        Rectangle rect = new Rectangle(brickX, brickY, brickWidth, brickHeight);
                        Rectangle ballRect = new Rectangle (ballposX, ballposY, 20, 20);
                        Rectangle brickRect = rect;
                        
                        if (ballRect.intersects (brickRect))
                        {
                            map.setBrickValue (0, i, j);
                            totalBricks--;
                            score += 5;
                            
                            if (ballposX + 19 <= brickRect.x || ballposX + 1 >= brickRect.x + brickRect.width)
                            {
                                ballXdir = -ballXdir;
                            }
                            else
                            {
                                ballYdir = -ballYdir;
                            }
                        }
                    }
                }
            }
            ballposX += ballXdir;
            ballposY += ballYdir;
            
            if (ballposX < 0)
            {
                ballXdir = -ballXdir;
            }
            
            if (ballposY < 0)
            {
                ballYdir = -ballYdir;
            }
            
            if (ballposX > 670)
            {
                ballXdir = -ballXdir;
            }
        }
        
        repaint();
    }
    
    @Override
    public void keyTyped (KeyEvent e)
    {
    }
    
    @Override
    public void keyPressed (KeyEvent e)
    {
        if (e.getKeyCode() == KeyEvent.VK_RIGHT)
        {
            if (playerX >= 600)
            {
                playerX = 600;
            }
            else
            {
                moveRight();
            }
        }
        
        if (e.getKeyCode() == KeyEvent.VK_LEFT)
        {
            if (playerX < 10)
            {
                playerX = 10;
            }
            else
            {
                moveLeft();
            }
        }
        
        if (e.getKeyCode() == KeyEvent.VK_ENTER)
        {
            if (!play)
            {
                play = true;
                ballposX = 120;
                ballposY = 350;
                ballXdir = -1;
                ballYdir = -2;
                playerX = 310;
                score = 0;
                totalBricks = 21;
                map = new MapGenerator(3, 7);
                
                repaint();
            }
        }
    }
    
    @Override
    public void keyReleased (KeyEvent e)
    {
    }
    
    public void moveRight()
    {
        play = true;
        playerX += 20;
    }
    
    public void moveLeft()
    {
        play = true;
        playerX -= 20;
    }
}