//
//
//	PinBallGame class, final version
//
//	From Chapter 7 of
//	Understanging Object-Oriented Programming with Java
//	Written by Tim Budd
//	Published by Addison-Wesley Longman
//
//	See ftp://ftp.cs.orst.edu/pub/budd/java/ReadMe.html 
//	for further information
//
//

import java.awt.*;
import java.awt.event.*;
import java.util.Vector;

public class PinBallGame extends Frame {

    public static void main (String [ ] args) {
	world = new PinBallGame();
	world.show();
    }

    public static final int FrameWidth = 400;
    public static final int FrameHeight = 400;
    public static PinBallGame world;
    private int score = 0;
    private Label scoreLabel;
    private Vector balls;
    private Vector targets;

    public PinBallGame () {
	setTitle ("Pin Ball Construction Kit");
	setSize (FrameWidth, FrameHeight);

	balls = new Vector();
	scoreLabel = new Label ("score: 0");
	add ("North", scoreLabel);
	addMouseListener (new MouseKeeper());
	// create the targets 
	targets = new Vector();
	//
	targets.addElement(new Wall(50, 50, 2, 350));
	targets.addElement(new Wall(50, 50, 340, 2));
	//targets.addElement(new Wall(390, 50, 2, 380));
	targets.addElement(new Wall(390, 50, 2, 350));
	// 
	targets.addElement(new Hole(30, 100));
	targets.addElement(new Peg(30, 140, 100));
	targets.addElement(new Peg(30, 180, 200));
	targets.addElement(new ScorePad(30, 220, 100));
	targets.addElement(new ScorePad(30, 260, 200));
	targets.addElement(new Spring(15, 300));
	//targets.addElement(new Wall(30, 340, 2, 15));
	targets.addElement(new Wall(50, 400, 340, 2));
    }

    private class PinBallThread extends Thread {
	private Ball theBall;

	public PinBallThread (Ball aBall) {
	    theBall = aBall; 
	}

	public void run () {
	    while (theBall.y() < FrameHeight) {
		theBall.move ();
		// see if we ran into anything
		for (int j = 0; j < targets.size(); j++) {
		    PinBallTarget target = (PinBallTarget) targets.elementAt(j);
		    if (target.intersects(theBall)) target.hitBy(theBall);
		}
		repaint();
		// then sleep for a while
		try {
		  sleep(2);
		} catch (InterruptedException e) { System.exit(0); }
	    }
	}
    }

    private class MouseKeeper extends MouseAdapter {

	private PinBallTarget element;

	public void mousePressed (MouseEvent e) { 
	    element = null;
	    int x = e.getX();
	    int y = e.getY();
	    if ((x > FrameWidth-40) && (y > FrameHeight -40)) {
		PinBall newBall = new PinBall(e.getX(), e.getY());
		balls.addElement (newBall);
		Thread newThread = new PinBallThread (newBall);
		newThread.start();
	    } 
	    if (x < 40) {
		switch (y / 40) {
		case 2: element = new Hole(0, 0); break;
		case 3: element = new Peg(0, 0, 100); break;
		case 4: element = new Peg(0, 0, 200); break;
		case 5: element = new ScorePad(0, 0, 100); break;
		case 6: element = new ScorePad(0, 0, 200); break;
		case 7: element = new Spring(0, 0); break;
		case 8: element = new Wall(0, 0, 2, 15); break;
		}
	    }
	}

	public void mouseReleased (MouseEvent e) {
	    int x = e.getX();
	    int y = e.getY();
	    if ((element != null) && (x > 50)) {
		element.moveTo(x, y);
		targets.addElement (element);
		repaint(1);
	    }
	}
    }

    synchronized public void addScore (int v) { 
	score = score + v; 
	scoreLabel.setText("score = " + score); 
    }

    public void paint (Graphics g) {
	g.setColor (Color.white);
	g.fillRect (FrameWidth-40, FrameHeight-40, 30, 30);
	g.setColor (Color.red);
	g.fillOval (FrameWidth-40, FrameHeight-40, 30, 30);
	// draw balls
	for (int i = 0; i < balls.size(); i++) {
	    Ball aBall = (Ball) balls.elementAt(i);
	    aBall.paint(g);
	}
	// draw targets
	for (int j = 0; j < targets.size(); j++) {
	    PinBallTarget target = (PinBallTarget) targets.elementAt(j);
	    target.paint(g);
	}	
    }
}