import becker.robots.*;

class RobotSmarter extends Robot
{
    RobotSmarter(City c, int st, int ave, Direction dir, int num)
    {
        super(c, st, ave, dir, num);
    }

    public void moveFour()
    {
	 	  // "i" is a terrible name for a variable
		  // Unfortunately, it's also a traditional name for a
		  // counter, so it's good to get used to it.
        int i = 0; 
        // The above statement combines:
        // 		int i;
        // 		i = 0;
        // into one easy statement - it's handy
        // because you can both create a new block of memory,
        // and IMMEDIATELY put a starting value into it.
        while ( i < 4)
        {
            this.move();
            i = i + 1; // i is assigned the current value of i, plus 1
        }
    }
}

public class ICE_05_CL_Trace extends Object
{
    public static void main(String[] args)
    {
        City wallville = new City(10, 10);
        RobotSmarter rob = new RobotSmarter(wallville, 7, 0, Direction.EAST, 0);

        int counter = 0;
        new Thing(wallville, 7, 0);
        new Thing(wallville, 7, 4);
        new Thing(wallville, 3, 4);

        // Instead of giving rob 6 separate "move" commands,
        // simply tell it that you want it to move 6 times
        while ( counter < 4)
        {
            rob.move();
            counter = counter + 1; // counter is assigned the current value of i, plus 1
        }
		  
        rob.turnLeft();
		  
        rob.moveFour();
    }
}