/**
 * PROJECT 2 ROBOT DISTANCE 
 * Solution
 *
 * @Munsee, Ron
 * @version 1.00 04/05/11
 */
 import java.io.*;	// used for console
 import java.text.*; // used for formatting numberic data

import javax.swing.*;
import java.awt.*;

public class Proj2Robot extends JApplet {

    double northDist;    // IN  holds users first robot move north (0-100)
    double eastDist;	    // IN  holds users first robot move east  (0-100)    

public void init() {
       
       double distFromStart;	// OUT holds calculated distance value 
       String str;				// temp variable to capture users input
       
//--------------------- Preliminaries ----------------

       // Display Welcome Screen 
       JOptionPane.showMessageDialog( null, 
		"\n\n\t Welcome to the Robot Distance Program"+
		"\n\n\t You will be prompted for two ROBOT MOVES "+
		"\n\t The first MOVE is NORTH and the second is EAST"+
		"\n\t The program will calculate and display the distance "+
		"\n\t from the starting position."+
		"\n\n\t You may enter floating point numbers between 0 and 100 for"+
		"\n\t distance traveled."
		 );
					
//------------------ Get the North and East Moves for the ROBOT ----------------

	str = JOptionPane.showInputDialog( "\n\n\t Enter the distance the Robot traveled North : ");
	
	northDist = Double.parseDouble(str);
	
	str = JOptionPane.showInputDialog( "\n\n\t Enter the distance the Robot traveled East : ");
	eastDist = Double.parseDouble(str);
	
// ------------------- Calculations -----------------------
	
	distFromStart = Math.sqrt(Math.pow(northDist,2.0)+Math.pow(eastDist,2.0));
    
    }
    


    public void paint( Graphics g ) {
	//using (400,400) as center of applet.
	//these casts stink...
	g.drawLine( 400, 400, 400, 400-(int)northDist );
	g.drawLine( 400, 400-(int)northDist, 400+(int)eastDist, 400-(int)northDist );
	g.setColor( Color.RED );
	g.drawLine( 400, 400, 400+(int)eastDist, 400-(int)northDist );
    }    
    
}