VECTOR temp;
gun_pan.center_x = gun_pan.size_x * 0.5;
gun_pan.center_y = gun_pan.size_y * 0.5;
while(1)		
{
   vec_set(temp, gun_pan.pos_x);	
   vec_add(temp, gun_pan.center_x);
   vec_sub(temp, mouse_cursor.x);
   vec_to_angle(temp,temp);
   gun_pan.angle = 90-temp.x;
   wait(1);
}

VECTOR temp;
VECTOR paneldirection;
gun_pan.center_x = gun_pan.size_x * 0.5;
gun_pan.center_y = gun_pan.size_y * 0.5;
while(1)		
{
   vec_set(temp, gun_pan.pos_x);	
   vec_add(temp, gun_pan.center_x);
   vec_sub(temp, mouse_cursor.x);
   //Here is the code I added into EvilSOB's
   vec_normalize(temp, 1);
   vec_set(paneldirection, temp);
   //
   vec_to_angle(temp,temp);
   gun_pan.angle = 90-temp.x;
   wait(1);
}

function moveMyPanel()
{
   while(isMoving)
   {
      panelToMove.pos_x += speedOfMovement*paneldirection.x*time_step;
      panelToMove.pos_y += speedOfMovement*paneldirection.y*time_step;
      wait(1);
   }
}