#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

#define MAX 10
#define TRUE 1
#define FALSE 0

int main (void)
{   int hur_x = 0,
        hur_y = 0,
        x = 0,
        y = 0,
        tries = 0,
        ret_val = 0,
        got_hurkle = FALSE;
    char another = 'N';

    /*Use the time and srand functions in order to generate better random numbers*/
    srand(time(NULL));

    printf("\n *** Welcome to Find the Hurkle ***\n");
    printf("\n The Hurkle is hiding within a grid of 10 by 10.\n");
    printf(" x = left -> right, y = down -> up\n");
    printf(" x = 1 -> 10 , y = 1 -> 10\n");

    printf("\n Enter your guess in the following format -\n");
    printf(" x y (x and y must be whole numbers in the range 1 <-> 10\n");

    do
    {   /*Re-initialise important variables*/
        tries = hur_x = hur_y = 0;

        /*Generate the co-ordinates for the Hurkle to hide. */
        /*make sure we get a value between 1 and 10 */
        hur_x = (rand() % 9) + 1;
        hur_y = (rand() % 9) + 1;

        while (tries < MAX)
        {   while (ret_val != 2)
            {   printf("\n Please enter guess number %d (x y) - ", (tries++)+1);
                scanf("%d %d", &x, &y);
            }

            /*Check for incorrect input being entered*/
            if (x < 1 || x > 10 || y < 1 || y > 10)
            {   printf(" **INCORRECT INPUT** Please try again.");
                tries--;
                continue;
            }

            /*Get out of the loop if they have found the Hurkle*/
            if (x == hur_x && y == hur_y)
            {   got_hurkle = TRUE;
                break;
            }

            /*Tell user where to try next time*/
            if (hur_x < x)
                printf(" *LEFT* ");
            else if (hur_x > x)
                printf(" *RIGHT* ");

            if (hur_y < y)
                printf(" *DOWN* ");
            else if (hur_y > y)
                printf(" *UP* ");
        }

        if (got_hurkle)
           printf("\n Hit - you found it !\n");
        else
            printf("\n Bad Luck - you missed\n");

        /*Continue with another game?*/
        printf("\n Care for another game? (Y/N) - ");
        another = toupper(getche());

    }while (another == 'Y');

    printf("\n Goodbye!\n");
    return EXIT_SUCCESS;
}