public void Kill(Status killReason)
{
if (killReason == Status.Alive)
{
throw new ArgumentException();
}
// Clean up from tail up
Coord current = Tail;
for (;;)
{
Debug.Assert(world.fields[current.Y, current.X].occupant == FastWorld.Occupant.Snake);
Debug.Assert(world.fields[current.Y, current.X].id == index);
Direction d = world.fields[current.Y, current.X].direction;
world.fields[current.Y, current.X] = new FastWorld.Field(FastWorld.Occupant.Empty);
if (current.Equals(Head))
{
break;
}
current = current.Advanced(d);
}
Status = killReason;
}
/// <summary>
/// Enumerate snake parts from tail to head. Enumerator only valid without simulating ticks.
/// </summary>
/// <returns>Enumeration of all parts of this snake</returns>
public IEnumerable <Coord> EnumerateParts()
{
Coord current = Tail;
for (;;)
{
Debug.Assert(world[current].occupant == FastWorld.Occupant.Snake);
Debug.Assert(world[current].id == index);
yield return(current);
if (current == Head)
{
break;
}
current = current.Advanced(world[current].direction);
}
yield break;
}