/* As needed students can write additional methods and add attributes */

public class Biosphere
{
    //Constant declarations and attributes by James Tam, don't change.
    public static final int ROWS = 10;
    public static final int COLUMNS = 10;
    public static final String HORIZONTAL_LINE = "  - - - - - - - - - -";
    public static final String HORIZONTAL_COUNT = "  0 1 2 3 4 5 6 7 8 9 ";
    private Critter [][] current; 


    //Original code written by James Tam, don't modify
    public Biosphere(Critter [][] aWorld)
    {
        //Original code
        current = aWorld;

        //Student code

    }

    //The code used by the student was based on the display code written by James Tam
    public void display()
    { 
        //Original code below: student can freely modify to fulfill assignment requirements
        //(add, delete, change existing code).
        int i;
        int r;
        int c;
	System.out.println("  PREVIOUS GENERATION");
	System.out.println(HORIZONTAL_COUNT);
        System.out.print(" ");
        for (i = 0; i < ROWS; i++)
            System.out.print(" -"); //Line of dashes before the array
        System.out.println();
	for (r = 0; r < ROWS; r++)
	{
	    System.out.print(r); //Line # before each row
	    for (c = 0; c < COLUMNS; c++)
	    {
		System.out.print("|" + current[r][c]); //Bounding line left of array element
            }
            System.out.println("|"); //Bounding line at the of the row for the last element
            System.out.print(" ");
            for (i = 0; i < ROWS; i++)
                System.out.print(" -");  //Bounding line below each array element
            System.out.println();
        }
    }

    //Original code written by James Tam, don't modify
    public Critter [][] getCurrent() 
    {
        return(current);
    }

    //Original code written by James Tam
    public void runTurn()
    {
        //Original code below: student can freely modify to fulfill assignment requirements
        //(add, delete, change existing code).
         display();
    }

}