Движение мыши: происходит зацикливание

//---------------------------------------------------------------------------
 
#pragma hdrstop
#include "mouse.h"
#include <time.h>
#include <iostream.h>
#include <windows.h>
//---------------------------------------------------------------------------
 
#pragma argsused
mouse f;
HANDLE hwnd;
 
void main()
{
     int x, y;
     float spd;
     cin >> x;
     cin >> y;
     cin >> spd;
 
     hwnd = GetForegroundWindow();
     ShowWindow(hwnd,SW_HIDE);
 
     f.SmoothMove(x, y, spd);
     f.LeftClick();
}
//---------------------------------------------------------------------------

#include "mouse.h"
#include <windows.h>
#include <math.h>
 
void mouse::LeftClick()
{
     mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0);
     mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0);
}
 
void mouse::RightClick()
{
     mouse_event(MOUSEEVENTF_RIGHTDOWN,0,0,0,0);
     mouse_event(MOUSEEVENTF_RIGHTUP,0,0,0,0);
}
 
void mouse::Move(int x, int y)
{
     mouse_event(MOUSEEVENTF_MOVE,x,y,0,0);
}
 
void mouse::MoveTo(int x, int y)
{
     SetCursorPos(x,y);
}
 
void mouse::SmoothMove(float x, float y,float speed)
{
     POINT c_pos;
     GetCursorPos(&c_pos);
     float sx, sy, bx, by, n;
     bx = c_pos.x;
     by = c_pos.y;
 
     n=sqrt((bx-x)*(bx-x)-(by-y)*(by-y));
 
     sx=(x - bx) / n*speed;
     sy =(y - by) / n*speed;
 
     float sh, sb;
     sh=x-bx;
     sb=y-by;
 
     while (bx>=sh && by>=sb )
     {
          bx += sx;
          by += sy;
          MoveTo(bx,by);
          Sleep(20);
     }
}

     bx -= sx;
     by -= sy;

     while ((abs(bx -  c_pos.x) < sh) && (abs(by -  c_pos.y) < sb))

     while (abs(bx -  c_pos.x) < sh)

#define DEGREES(val) abs(min(val, 360))
 
POINT c_pos;
GetCursorPos(&c_pos);
float angle = atan2(y - c_pos.y, x - c_pos.x) * M_PI / 180;
 
float new_x = c_pos.x - speed * cos(DEGREES(angle) * M_PI / 180);
float new_y = c_pos.y - speed * sin(DEGREES(angle) * M_PI / 180);
 
while(sqrt((new_x - x)*(new_x - x) + (new_y - y)*(new_y - y)) > 0)
{
    SetCursorPos(new_x, new_y);
    Sleep(20);
}