/// <summary>
/// Add a new Gene to the list of genes
/// </summary>
public void AddGene()
{
Gene g = population.GetGene(counterGenes);
genes.Add(counterGenes, g);
counterGenes++;
//All input and output genes have been created
//So the next ones will be in the middle and they will be used for inter-connections
if (counterGenes > numberInput + numberOutput)
{
Gene i, o;
float w = 1;
//Select a gene from input genes
i = genes[Random.Range(0, numberInput)];
//Select the next gene (output or middle one)
//(The last gene created is excluded since it make no sense to be connected to itself)
o = genes[Random.Range(numberInput, counterGenes)];
ConnectionGene c = population.GetConnection(i, o);
if (c != null)
{
w = c.GetWeight();
c.SetEnabled(false);
}
AddConnection(i, g, w);
AddConnection(g, o, 1);
}
}
public void RemoveConnection(ConnectionGene connection)
{
////Connect the 2 extremes together
//Gene from = connection.GetFromGene();
//Gene to = connection.GetToGene();
//float weight = connection.GetWeight();
//AddConnection(from, to, weight);
////Remove old connection
//population.RemoveConnection(connection);
connection.SetEnabled(false);
}
/// <summary>
/// Get connection if it exists otherwise it is created a new Connection
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="weight"></param>
/// <returns></returns>
public ConnectionGene GetConnection(Gene from, Gene to, float weight = 0)
{
int index = HashFuction(from.GetID(), to.GetID());
ConnectionGene c;
connections.TryGetValue(index, out c);
if (c == null)
{
c = new ConnectionGene(index, from, to, weight);
connections.Add(index, c);
c.SetEnabled(true);
}
return(c);
}
public void MutateAddNode()
{
ConnectionGene randomConnection = GetConnectionGenes()[random.Next(GetConnectionGenes().Count)];
NodeGene InNode = GetNodeGenes()[randomConnection.GetInputNode()];
NodeGene OutNode = GetNodeGenes()[randomConnection.GetOutputNode()];
randomConnection.SetEnabled(false);
NodeGene MiddleNode = new NodeGene(GetNodeGenes().Count + 1, NodeGene.TYPE.HIDDEN, 0);
ConnectionGene InputToMiddle = new ConnectionGene(InNode.GetID(), MiddleNode.GetID(), 1, true, NEAT_CONFIGS.GLOBAL_INNOVATION_NUMBER++);
ConnectionGenes.Add(InputToMiddle);
MiddleNode.AddIncomingConnection(InputToMiddle);
ConnectionGene MiddleToOutput = new ConnectionGene(MiddleNode.GetID(), OutNode.GetID(), randomConnection.GetWeight(), true, NEAT_CONFIGS.GLOBAL_INNOVATION_NUMBER++);
ConnectionGenes.Add(MiddleToOutput);
OutNode.AddIncomingConnection(MiddleToOutput);
//Add to the total current Pool Connections Made in this instance
NodeGenes.Add(MiddleNode.GetID(), MiddleNode);
}
public void DisableConnection(ConnectionGene gene)
{
gene.SetEnabled(false);
}
public void EnableConnection(ConnectionGene gene)
{
gene.SetEnabled(true);
}