void Award_star()
{
if (score >= 500)
{
stars.Earned_star("star1");
level = 2;
}
if (score >= 1000)
{
stars.Earned_star("star2");
level = 3;
}
if (score >= 1500)
{
stars.Earned_star("star3");
level = 4;
}
if (score >= 3000)
{
stars.Earned_star("star4");
level = 5;
}
if (score >= goal)
{
stars.Earned_star("star5");
}
}