/// <summary>
/// Method <c>Move</c> "moves" the snake
/// </summary>
public void Move()
{
Console.SetCursorPosition((head.Key + 4) * 2, head.Value + 2);
CircularQueue <KeyValuePair <int, int> > segments2 = new CircularQueue <KeyValuePair <int, int> >(Length);
KeyValuePair <int, int> tempSeg = head;
if (Segments.Size >= Length)
{
KeyValuePair <int, int> del = Segments.Dequeue();
DeleteLeftovers(del.Key + 1, del.Value);
DeleteLeftovers(del.Key - 1, del.Value);
DeleteLeftovers(del.Key, del.Value + 1);
DeleteLeftovers(del.Key, del.Value - 1);
}
else
{
Segments.Size++;
}
for (int i = 0; i < Segments.Count;)
{
segments2.Enqueue(Segments.Dequeue());
}
switch (Compass)
{
case Direction.UP:
if (HitEgg())
{
EatEgg();
Grid.Tiles[tempSeg.Key, tempSeg.Value - 1] = 1;
}
else if (HitObstacle() || HitSelf())
{
Speed = 0;
IsDead = true;
}
segments2.Enqueue(new KeyValuePair <int, int>(tempSeg.Key, tempSeg.Value - 1));
break;
case Direction.LEFT:
if (HitEgg())
{
EatEgg();
Grid.Tiles[tempSeg.Key - 1, tempSeg.Value] = 1;
}
else if (HitObstacle() || HitSelf())
{
Speed = 0;
IsDead = true;
}
segments2.Enqueue(new KeyValuePair <int, int>(tempSeg.Key - 1, tempSeg.Value));
break;
case Direction.RIGHT:
if (HitEgg())
{
EatEgg();
Grid.Tiles[tempSeg.Key + 1, tempSeg.Value] = 1;
}
else if (HitObstacle() || HitSelf())
{
Speed = 0;
IsDead = true;
}
segments2.Enqueue(new KeyValuePair <int, int>(tempSeg.Key + 1, tempSeg.Value));
break;
case Direction.DOWN:
if (HitEgg())
{
EatEgg();
Grid.Tiles[tempSeg.Key, tempSeg.Value + 1] = 1;
}
else if (HitObstacle() || HitSelf())
{
Speed = 0;
IsDead = true;
}
segments2.Enqueue(new KeyValuePair <int, int>(tempSeg.Key, tempSeg.Value + 1));
break;
}
if (Length > 0)
{
Segments = segments2;
}
head = Segments.Last();
}
