import java.awt.*;
import java.text.*;
public class Boll extends Container implements Runnable {
	private Thread aktivitet;
	int r, x0, y0;
	int xSteg, ySteg;
	String col;

/**********************************************
*Konstruktor.
***********************************************/
	public Boll(int radie, int x, int y, int xHast, int yHast, String col) {
		r = radie; xSteg = xHast; ySteg = yHast;
		x0 = x; y0 = y;
		this.col = col;
	}//konstructor

/**********************************************************
* Metoder som startar och stoppar bollar.
************************************************************/
	public void start() {
		if (aktivitet == null) {
			aktivitet = new Thread(this);
			aktivitet.start();
		}//if
	}//start

	public void stop() {
		if (aktivitet != null) {
			aktivitet.interrupt();
			aktivitet = null;
		}//if
	}//stop

	public void run() {
		while (aktivitet != null) {

			try { Thread.sleep(50);
			}//try

			catch (InterruptedException ie) {
				System.out.println("TRÅDTRASSEL: ");
				System.err.println(ie.getMessage());
			}//catch

			if (x0-r+xSteg < 0 || x0+r+xSteg > getSize().width)
			xSteg = -xSteg;
			x0 += xSteg;

			if (y0-r+ySteg < 0 || y0+r+ySteg > getSize().height)
			ySteg = -ySteg;
			y0 += ySteg;
			repaint();
		}//while
	}//run

	public int getXSteg () {
		return xSteg;
	}//getXSteg

	public int getYSteg () {
		return ySteg;
	}//getYSteg

	public int getX0 () {
		return x0;
	}//getX0

	public int getY0 () {
		return y0;
	}//getY0

	public void paint (Graphics g) {
		if (col == "bb") {
			g.setColor(Color.blue);
		}//if

		else {
			g.setColor(Color.red);
		}//else

		g.fillOval(x0-r, y0-r, 2*r, 2*r);
	}//paint
}//Boll