public void AddSnakeBodyPositions()
{
if (SnakeBody.Count == 1)
{
SnakeBodyX.Add(PreviousXPosition);
SnakeBodyY.Add(PreviousYPosition);
}
else
{
SnakeBodyX.Add(PreviousBodyXPositions.Last());
SnakeBodyY.Add(PreviousBodyYPositions.Last());
}
}