public void Update()
{
PlaySound = false;
if (Direction == SnakeDirection.Stop)
{
return;
}
var head = new Point((Point)SnakePosition[0]);
var tail = new Point((Point)SnakePosition[SnakePosition.Count - 1]);
if (Direction == SnakeDirection.Left)
{
head.X--;
}
if (Direction == SnakeDirection.Right)
{
head.X++;
}
if (Direction == SnakeDirection.Up)
{
head.Y--;
}
if (Direction == SnakeDirection.Down)
{
head.Y++;
}
for (int i = 0; i < SnakePosition.Count - 1; i++)
{
SnakePosition[SnakePosition.Count - 1 - i] = new Point((Point)SnakePosition[SnakePosition.Count - 2 - i]);
}
SnakePosition[0] = head;
if (IsCellEmpty(head.X, head.Y, true) == false)
{
Reset();
}
if (head.X == FoodPosition.X && head.Y == FoodPosition.Y)
{
SnakePosition.Add(tail);
UpdateFood();
PlaySound = true;
}
}