import java.util.*;


public class ChaseDriver
{
    public static void main (String [] args)
    {
	Scanner in = new Scanner(System.in);
	int pRow;
	int pColumn;
	Chase aChase = new Chase();
	char answer = ' ';
	aChase.display();

	while ((answer != 'q') && (answer != 'Q'))
	{
	    System.out.print("Enter player row: ");
	    pRow = in.nextInt();
	    System.out.print("Enter player column: ");
	    pColumn = in.nextInt();
	    in.nextLine();
	    aChase.placePlayer(pRow,pColumn);
	    System.out.println("Before chase");
	    aChase.display();
	    
	    // Part II: Determine the monster's destination coordinates so it 'chases' the 
	    // player
	    aChase.determineDestination(pRow,pColumn);

	    // Part I: Once destination (row,column) known move the monster from location to
	    // another.
	    aChase.move();

	    System.out.println("To see chase: Hit enter to continue");
	    in.nextLine();
	    aChase.display();
	    
	    System.out.print("Enter 'q' to quit: ");
	    answer = in.nextLine().charAt(0);
	}
    }
}

// Student version:
// Part 1: Movement not implemented
// Part 2: Chase not implemented
class Chase 
{
    public static final int SIZE = 4;
    public static final char PLAYER = 'P';
    public static final char MONSTER = 'M';
    public static final char EMPTY = ' ';
  
    private char maze[][];
    private int mRow;
    private int mColumn;
    private int dMRow;
    private int dMColumn;


    public Chase () {
	int r;
	int c;
	int temp;
	Random aGenerator = new Random();
	maze = new char[SIZE][SIZE];
	for (r = 0; r < SIZE; r++)
	    for (c = 0; c < SIZE; c++)
		maze[r][c] = EMPTY;
	mRow = aGenerator.nextInt(SIZE);
	mColumn = aGenerator.nextInt(SIZE);
	maze[mRow][mColumn] = MONSTER;
	dMRow = -1;
	dMColumn = -1;
    }

    public void display () {
	int r;
	int c;
	System.out.println("   0 1 2 3");
	for (r = 0; r < SIZE; r++)
	{
	    System.out.println("   - - - -");
	    System.out.print(r + " ");
	    for (c = 0 ; c < SIZE; c++)
	    {
		System.out.print("|" + maze[r][c]);
	    }
	    System.out.println("|");
	}
	System.out.println("   - - - -");
    }

    // Part I: Given that the source and destination row,column
    // known move the monster from it's current to destination
    // location.
    public void move () {

    }

    // Part II: Determine destination: updated the dMRow, dMColumn values so
    // it 'chases' the player
    public void determineDestination(int pRow, int pColumn)
    {







	    
	       
    }

    public void placePlayer (int r, int c) {
	maze[r][c] = PLAYER;
    }
}