infinite loop

[muhammad.a.haq]

class moving
{
private :
    short x;
    short y;
    int value;
public :
    moving (short xa ,short ya,int va);
    void gotoxy(short x, short y);
    void gotoxy(short x, short y,bool clear);
    void shiftright(int x, int y,int value);
    short get_x() ;
    short get_y()  ;
    int   get_value();

    void set_x(int newx );
    void set_y(int newy);
    void set_value(int newvalue);
    int generate_number();
    int generate_random_number();



};

#include "moving.h"
#include <iostream>
#include <conio.h>
#include <windows.h>
#include <ctime> // to use the time function
#include <cstdlib>
using namespace std;
moving ::moving(short xa ,short ya,int va)
{
    x = xa ;
    y = ya ;
    value =va ;
}

void moving :: gotoxy(short x , short y)
{
    COORD pos = {x, y};
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
}

void moving ::gotoxy(short x ,short y,bool clear)
{
    COORD pos = {x, y};
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
cout<<" ";
}

void moving::shiftright(int x ,int y ,int value )
{
        gotoxy(x,y);
    cout<<value;

}

short moving ::get_x()
{
    return x ;
}

short moving ::get_y()
{
    return y ;
}

int moving ::get_value()
{
    return value ;
}

void moving ::set_x(int newx)
{
    x=newx;
}

void moving ::set_y(int newy)
{
    y=newy ;
}

void moving ::set_value(int newvalue)
{
    value=newvalue ;
}


int moving::generate_number()
{
    srand(time(NULL));
    int value= rand() % 100;
    return value;
}

int moving ::generate_random_number()
{       srand(time(NULL));
     int x= rand() % 50;

    int y= rand() % 50;
    //return y;

    gotoxy(x,y);
    int rand_num=generate_number();
    cout<<rand_num;
    return rand_num;
}
#include <moving.h>
#include <iostream>
#include <conio.h>
#include <windows.h>
#include <ctime> // to use the time function
#include <cstdlib>
using namespace std;

int main ()
{   moving m1(0,0,0);
    moving m2 (0,0,0);


   m1.shiftright(m1.get_x(), m1.get_y(), m1.get_value());
    m2.shiftright(m2.get_x(), m2.get_y(), m2.get_value());


   while(m2.get_value() < 500)
    {
        unsigned char  a;
         int x=0;
         int y=0;
         int v =0 ;

         x=m1.get_x();
         y=m1.get_y();
         v=m1.get_value();






             while(m1.get_x() != m2.get_x() && m1.get_y() != m2.get_y())
             {
                a=getch();


                switch(a)
                {
                    case 77:
                        m1.gotoxy(y,x,true);
                        y=y+1;
                        if(y>50)
                        m1.set_y(50);
                        m1.shiftright(y,x,v);
                        break;
                    case 75:
                        m1.gotoxy(y,x,true);
                        y=y-1;
                        if(y<0)
                        m1.set_y(0);
                        m1.shiftright(y,x,v);
                        break;
                    case 72:
                         m1.gotoxy(y,x,true);
                        x=x-1;
                        if(x<0)
                        m1.set_x(0);
                        m1.shiftright(y,x,v);
                        break;
                    case 80:
                         m1.gotoxy(y,x,true);
                        x=x+1;
                        if(x>50)
                        m1.set_x(50);
                        m1.shiftright(y,x,v);
                        break;
                    case 'e':
                    break;
                } //switch

             } //while cordinates matches

        m1.set_value(m1.get_value() + m2.get_value());
         m1.set_x(0);
         m1.set_y(0);
         m1.shiftright(m1.get_x(), m1.get_y(), m1.get_value());

        m2.generate_random_number();
         m2.shiftright(m2.get_x(), m2.get_y(), m2.get_value());
     } // while <500

}//itn main

when run the program its start generating the random numbers without catching the number i might think this is happening because of 2nd while condition but i dont know what else i write in the condition

[muhammad.a.haq]

the arrows key to move first number left, up, down right to reach 2nd number. When first number reach the co-ordinates of 2nd number. Add both numbers. The resultant value now become the first number and again generate 2nd number . The Game will end when children complete adding 500 points.
the problem is the while loop all things is working but the while loop runs infinite when i run the program its start generating numbers on different cordinates plz help me i am new to c++ and i have to submit the assignment tomorrow
plz help me