import java.util.Scanner;

/*
  Author:  James Tam
  Version: October 12, 2015

  Features implemented:
  * Reads start positions from the file "data.txt" 
  * (Input file must be in the curent working directory).
  * Array is initialized based on these starting positions and
    world is displayed once.

  To-do:
  * All other program requirements specified in the assignment
    description.
*/

public class World
{
    public static final int SIZE = 10;
    public static final int START = 1;
    private Entity [][] aWorld;
    private int currentRow;
    private int currentColumn;  
  
    // Post-condition: the position of the characters in the
    // starting input file will determine the position of the
    // objects in the array. The type of character in the file
    // determines the appearance of the Entity(O or D) or if the
    // element is empty (spaces become null elements)
    public World()
    {
        aWorld = new Entity[SIZE][SIZE];
        int r;
        int c;
        for (r = 0; r < SIZE; r++)
        {
            for (c = 0; c < SIZE; c++)
            {
                aWorld[r][c] = null;
            }
        }
        aWorld = FileInitialization.read();
    }

    // Displays array elements on at a time one row per line
    // Each element is bound above, below, left and right by 
    // bounding lines
    public void display()
    {
        int b;
        int r;
        int c;
        for (r = 0; r < SIZE; r++)
        {
            for (b = 0; b < SIZE; b++)
                System.out.print(" -");
            System.out.println();
            for (c = 0; c < SIZE; c++)
            {
                if(aWorld[r][c] == null)
                    System.out.print("| ");
                else
                    System.out.print(
                      "|" + aWorld[r][c].getAppearance()); 
            }
            System.out.println("|");
        }
        for (b = 0; b < SIZE; b++)
            System.out.print(" -");
        System.out.println();
    }

    // Shows the position of the Entities immediately after
    // file initialization has occured. It's up the student
    // to fill in the rest of the program!
    public void start()
    {
        display();
    }
}