import java.util.Random;

public class Tardis
{
    private int energy;

    public Tardis(int startEnergy)
    {
        energy = startEnergy;
    }

    public Location calculateCoordinates(int maxRow, int maxColumn)
    {
        Random aGenerator = new Random();
        Location aLocation = new Location();

        // Randomly generate a new set of (row,column)
        // values to move the tardis to. The randomly
        // generated value will be from 0 - (maxRow/maxColumn)
        // because those values dictate the size of the world
        // containing the tardis.
        aLocation.setRow(aGenerator.nextInt(maxRow));
        aLocation.setColumn(aGenerator.nextInt(maxColumn));

        System.out.println("Tardis rematerializing at (r/c): " + 
          aLocation.getRow() + "/" + aLocation.getColumn());
        energy--;
        return(aLocation);
    }
   
    public boolean hasEnergy()
    {
        if (energy > 0)
            return(true);
        else
            return(false); 
    }
}