APCS_CH8_Chess960R3.java

import java.util.Scanner;

public class Chess960V3
{
    public static void main(String[] args)
    {
        String board="";
        int choice = (int)(Math.random()*960+1);
        EasyReader spock = new EasyReader("960.txt");
        for(int i=0; i<choice; i++)
        {
            board = spock.readLine();
        }
        String[][] game = new String[8][8];
        initBoard(board, game);
        System.out.println(toString(game));
        Scanner input = new Scanner(System.in);
        while(true)
        {
            System.out.print("current row: ");
            int r1 = input.nextInt();
            System.out.print("current col: ");
            int c1 = input.nextInt();
            System.out.print("new row: ");
            int r2 = input.nextInt();
            System.out.print("new col: ");
            int c2 = input.nextInt();
            move(r1,c1,r2,c2,game);
            System.out.println(toString(game));
        }
    }

    public static void initBoard(String board, String[][] game)
    {
        for(int c=0; c<8; c++)
        {
            game[7][c]=board.substring(c,c+1).toLowerCase();
            game[6][c]="p";
            game[1][c]="P";
            game[0][c]=board.substring(c,c+1);
        }
    }

    public static String toString(String[][] game)
    {
        String temp="";
        for(int r=7; r>=0; r--)
        {
            for(int c=0; c<8; c++)
            {
                if(game[r][c]==null)
                {
                    temp+="|_|";
                }
                else
                {
                    temp+="|"+game[r][c]+"|";
                }
            }
            temp+="\n";
        }
        return temp;
    }

    public static void move(int r1, int c1, int r2, int c2, String[][] game)
    {
        game[r2][c2] = game[r1][c1];
        game[r1][c1] = null;
    }
}