/// <summary>
/// Loads an ERC from the ERCBank given the value in the genome.
/// If there is no such ERC, then one is created and randomized, then added to the bank.
/// The point of this mechanism is to enable ERCs to appear in multiple places in a GPTree.
/// </summary>
public GPNode ObtainERC(IEvolutionState state, int genomeVal, int threadnum,
GPNode node, IDictionary <int, GPNode> ercMapsForFancyPrint)
{
// TODO: BRS: Questionable key here because of Java -> C# conversion (hash codes)
var ercList = (IList <GPNode>)ERCBank[genomeVal];
if (ercList == null)
{
ercList = new List <GPNode>();
ERCBank[genomeVal] = ercList;
}
GPNode dummy;
// search array list for an ERC of the same type we want
for (var i = 0; i < ercList.Count; i++)
{
dummy = ercList[i];
// ERC was found inside the list
if (dummy.NodeEquivalentTo(node))
{
if (ercMapsForFancyPrint != null)
{
ercMapsForFancyPrint[genomeVal] = dummy;
}
return(dummy.LightClone());
}
}
// erc was not found in the array list lets make one
node = node.LightClone();
node.ResetNode(state, threadnum);
ercList.Add(node);
if (ercMapsForFancyPrint != null)
{
ercMapsForFancyPrint[genomeVal] = node;
}
return(node);
}
