package src;

import java.util.Formatter;

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.Ellipse2D;

import javax.swing.*;

public class BallGame extends JFrame {

// public static final int CANVAS_WIDTH = 800;

// public static final int CANVAS_HEIGHT = 600;

private String title = "Ball Game";

private int canvasWidth = 800;

private int canvasHeight = 600;

private static final int UPDATE_RATE = 30; // Number of refresh per second

private DrawCanvas canvas;

private Ball ball;

private Ball ball2;

private BallContainer box;

public BallGame() {

canvas = new DrawCanvas(); // Construct a drawing canvas (a JPanel)

canvas.setPreferredSize(new Dimension(canvasWidth, canvasHeight));

// Container cp = getContentPane();

// cp.setLayout(new BorderLayout());

// cp.add(canvas, BorderLayout.CENTER);

setContentPane(canvas);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

pack(); // pack all the components in this JFrame

setTitle(title);

setVisible(true); // show this JFrame

initGame();

}

public void initGame()

{

ball = new Ball(50, 50, 10, 5, 30);

ball2 = new Ball(50, 50, 30, 15, 60);

box = new BallContainer(0, 0, canvasWidth, canvasHeight);

// Handling window resize.

canvas.addComponentListener(new ComponentAdapter() {

@Override

public void componentResized(ComponentEvent e) {

Component c = (Component)e.getSource();

Dimension dim = c.getSize();

canvasWidth = dim.width;

canvasHeight = dim.height;

// Adjust the bounds of the container to fill the window

box.set(0, 0, canvasWidth, canvasHeight);

}

});

// Start the ball bouncing (in its own thread)

Thread gameThread = new Thread() {

public void run()

{

while (true)

{

box.collidesWith(ball);

ball.move();

box.collidesWith(ball2);

ball2.move();

// Refresh the display

repaint(); // Callback paintComponent()

// Delay for timing control and give other threads a chance

try {

Thread.sleep(1000 / UPDATE_RATE); // milliseconds

} catch (InterruptedException ex) { }

}

}

};

gameThread.start(); // Callback run()

}

/**

* Inner class DrawCanvas (extends JPanel) used for custom graphics drawing.

*/

class DrawCanvas extends JPanel {

@Override

public void paintComponent(Graphics g) { // invoke via repaint()

super.paintComponent(g);

setBackground(Color.LIGHT_GRAY);

g.setColor(Color.WHITE);

ball.draw(g);

ball2.draw(g);

// Graphics2D g2d = (Graphics2D) g;

// g2d.drawString(ball.toString(), ball.getX()+2*ball.getRadius(), ball.getY());

}

@Override

public Dimension getPreferredSize() {

return (new Dimension(canvasWidth, canvasHeight));

}

}

public static void main(String[] args) {

// Run GUI codes in the Event-Dispatching thread for thread safety

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

new BallGame(); // Let the constructor do the job

}

});

}

}