public void SetPlayerSymbol(Position position, PlayerSymbol value)
{
EnsurePositionIsCorrect(position);
if (_busyCells.ContainsKey(position))
{
throw new InvalidOperationException($"Position {position} is already busy");
}
_busyCells[position] = value;
}
public PlayerSymbol? GetPlayerSymbol(Position position)
{
EnsurePositionIsCorrect(position);
PlayerSymbol result;
if (_busyCells.TryGetValue(position, out result))
{
return result;
}
return null;
}
private void EnsurePositionIsCorrect(Position position)
{
if (!Size.HasValue) return;
Ensure.That(position.X, () => position.X).IsInRange(0, Size.Value.Width - 1);
Ensure.That(position.Y, () => position.Y).IsInRange(0, Size.Value.Height - 1);
}