/**
* Disable random ConnectionGene and add a new NodeGene in the middle
*/
public void AddNodeMutation(Counter nodeInnovation, Counter connectionInnovation)
{
int listSize = Connections.Count;
int randomConKey = Random.Range(0, listSize - 1);
while (!Connections.ContainsKey(randomConKey))
{
randomConKey = Random.Range(0, listSize - 1);
}
ConnectionGene con = Connections[randomConKey];
NodeGene inNode = Nodes[con.InNode];
NodeGene outNode = Nodes[con.OutNode];
con.Expressed = false;
NodeGene newNode = new NodeGene(NodeGene.NodeType.HIDDEN, nodeInnovation.GetInnovation());
ConnectionGene inToNew = new ConnectionGene(inNode.ID, newNode.ID, 1f, true, connectionInnovation.GetInnovation());
ConnectionGene newToOut = new ConnectionGene(newNode.ID, outNode.ID, con.Weight, true, connectionInnovation.GetInnovation());
//Nodes.Add(newNode.ID, newNode);
AddNodeGene(newNode);
//Connections.Add(inToNew.Innovation, inToNew);
AddConnectionGene(inToNew);
//Connections.Add(newToOut.Innovation, newToOut);
AddConnectionGene(newToOut);
}
public void AddNodeGene(NodeGene gene)
{
Nodes.Add(gene.ID, gene);
}
public void AddConnectionMutation(Counter innovation, int maxAttempts)
{
int tries = 0;
bool success = false;
while (tries < maxAttempts && success == false)
{
tries++;
int listSize = Nodes.Count;
int randomNodeKey1 = Random.Range(0, listSize - 1);
int randomNodeKey2 = Random.Range(0, listSize - 1);
while (!Nodes.ContainsKey(randomNodeKey1) || !Nodes.ContainsKey(randomNodeKey2))
{
randomNodeKey1 = Random.Range(0, listSize - 1);
randomNodeKey2 = Random.Range(0, listSize - 1);
}
NodeGene node1 = Nodes[randomNodeKey1];
NodeGene node2 = Nodes[randomNodeKey2];
bool reversed = false;
if (node1.GetType().Equals(NodeGene.NodeType.HIDDEN) && node2.GetType().Equals(NodeGene.NodeType.INPUT))
{
reversed = true;
}
else if (node1.GetType().Equals(NodeGene.NodeType.OUTPUT) && node2.GetType().Equals(NodeGene.NodeType.HIDDEN))
{
reversed = true;
}
else if (node1.GetType().Equals(NodeGene.NodeType.OUTPUT) && node2.GetType().Equals(NodeGene.NodeType.INPUT))
{
reversed = true;
}
bool connectionImpossible = false;
if (node1.GetType().Equals(NodeGene.NodeType.INPUT) && node2.GetType().Equals(NodeGene.NodeType.INPUT))
{
connectionImpossible = true;
}
else if (node1.GetType().Equals(NodeGene.NodeType.OUTPUT) && node2.GetType().Equals(NodeGene.NodeType.OUTPUT))
{
connectionImpossible = true;
}
bool connectionExists = false;
foreach (ConnectionGene con in Connections.Values)
{
if (con.InNode == node1.ID && con.OutNode == node2.ID)
{
connectionExists = true;
break;
}
else if (con.InNode == node2.ID && con.OutNode == node1.ID)
{
connectionExists = true;
break;
}
}
if (connectionExists || connectionImpossible)
{
continue;
}
ConnectionGene newCon = new ConnectionGene(reversed ? node2.ID : node1.ID, reversed ? node1.ID : node2.ID, Random.Range(0f, 1f), true, innovation.GetInnovation());
//Connections.Add(newCon.Innovation, newCon);
AddConnectionGene(newCon);
success = true;
}
if (success == false)
{
Debug.Log("Tried, but could not add more connections");
}
}
public NodeGene(NodeGene gene)
{
this.Type = gene.Type;
this.ID = gene.ID;
this.sum = 0;
}