/// <summary>
/// Add a ticker which there can only exist one of.
///
/// If the ticker exists, replaces it and returns false.
/// Otherwise returns true.
/// </summary>
public bool AddUniqueTicker(TickerId id, ITicker ticker)
{
ITicker value = null;
var added = true;
if (uniqueTickers.TryGetValue(id, out value))
{
value.Stop();
added = false;
}
uniqueTickers[id] = ticker;
return(added);
}
/// <summary>
/// Add a thing that handles ticks every frame.
/// </summary>
public void AddTicker(ITicker ticker)
{
this.tickers.AddLast(ticker);
}