import java.awt.*;
import fallingletter;
import java.awt.event.*;
import javax.swing.Timer;		//this one uses the real Timer class, which is why Internet Explorer hates it

public class HelloTimer extends java.applet.Applet implements MouseListener, MouseMotionListener, ActionListener
{
	fallingletter[] letters;
	int count, draggingletter;
	Timer animator;
	String greeting;
	//pretty familiar stuff...
	public void init()
	{
		greeting = "Hello, World!";		
		letters = new fallingletter[greeting.length()];
		for (int i=0; i<greeting.length(); i++)
			letters[i]=new fallingletter(greeting.charAt(i), 20+20*i, 0);
		setBackground(Color.black);
		count=0;
		draggingletter=-1;
		addMouseListener(this);
		addMouseMotionListener(this);
		animator = new Timer(30, this);		//creates and starts the timer
		animator.start();
	}
	//draws all the letters
	public void paint(Graphics g)
	{
		g.setFont(new Font("Serif", Font.BOLD, 20));
		for (int i = 0; i<greeting.length() && i<count/20; i++)
			letters[i].draw(g);
	}
	//changes color of nearby letters on click
	public void mouseClicked(MouseEvent event)
	{
		for (int i=0; i<greeting.length(); i++)
			if (letters[i].clickedin(event.getPoint()))
				letters[i].changeColor();
	}
	//grabs letter on pressing
	public void mousePressed(MouseEvent event)
	{
		for (int i=0; i<greeting.length(); i++)
			if (letters[i].clickedin(event.getPoint()))
			{
				draggingletter=i;
				break;
			}
	}
	//releases letter
	public void mouseReleased(MouseEvent event)
	{
		draggingletter=-1;
	}
	public void mouseEntered(MouseEvent event){}
	public void mouseExited(MouseEvent event){}
	public void mouseMoved(MouseEvent event){}
	//moves letter when dragging
	public void mouseDragged(MouseEvent event)
	{
		if (draggingletter>=0)
			letters[draggingletter].update(event.getX(), event.getY());
	}
	//animation handled here
	public void actionPerformed(ActionEvent e)
	{
		for (int i=0; i<greeting.length() && i<count/20; i++)
			if (i!=draggingletter)
				letters[i].update();	//update every letter's position except the one being dragged
		count++;				//increment frame count
		repaint();				//repaint
	}
}