private void SetButtonImage()
{
switch (progressService.GetProgressForLevel(levelNumber))
{
case 0:
GetComponent <SpriteRenderer>().sprite = spriteEmpty;
break;
case 1:
GetComponent <SpriteRenderer>().sprite = spriteBronze;
break;
case 2:
GetComponent <SpriteRenderer>().sprite = spriteSilver;
break;
case 3:
GetComponent <SpriteRenderer>().sprite = spriteGold;
break;
default:
GetComponent <SpriteRenderer>().sprite = spriteLocked;
break;
}
}