public void AddConnectionMutation()
{
if (neat.maxConnections <= connections.Count)
{
return;
}
for (int tries = 0; tries < atempts; tries++) //try to find places in the network to add connections
{
NodeGene node1 = nodes[Random.Range(0, nodes.Count)]; //pick 2 random nodes
NodeGene node2 = nodes[Random.Range(0, nodes.Count)];
bool reverse = false;
if (node1.GetLayer() > node2.GetLayer())
{
reverse = true;
}
if (reverse)
{//swap nodes
NodeGene temp = node1;
node1 = node2;
node2 = temp;
}
bool connectionExists = false;
if (node1.GetLayer() == node2.GetLayer())
{
connectionExists = true;
}
for (int i = 0; i < connections.Count; i++)
{//check if connection exists
if (connections[i].GetInNode() == node1 && connections[i].GetOutNode() == node2)
{
connectionExists = true;
break;//or call method again
}
}
// if (node1.GetLayer() >= node2.GetLayer()) {
// connectionExists = true;
// }
if (!connectionExists)
{
connections.Add(new ConnectionGene(node1, node2, Random.Range(-1.0f, 1.0f), true, track.Innovate()));
return;
}
}
}
public void AddNodeMutation()
{
if (neat.maxNeurones <= nodes.Count)
{
return;
}
ConnectionGene connectionSplit = connections[Random.Range(0, connections.Count)];//choose random connection to split
connectionSplit.Disable();
NodeGene nodeIn = connectionSplit.GetInNode();
NodeGene nodeOut = connectionSplit.GetOutNode();
//Debug.Log("nin" + nodeIn.GetLayer());
//Debug.Log("nout"+ nodeOut.GetLayer());
int newLayer;
if (nodeOut.GetLayer() - nodeIn.GetLayer() == 1)
{
//Debug.Log(nodeIn.GetLayer());
//Debug.Log(nodeOut.GetLayer());
newLayer = nodeOut.GetLayer();
AddLayer(nodeOut.GetLayer());
//Debug.Log("new layer" + nodeOut.GetLayer());
//newLayer = nodeOut.GetLayer();
}
else
{
newLayer = Random.Range(nodeIn.GetLayer() + 1, nodeOut.GetLayer() - 1);
}
NodeGene node = new NodeGene(NodeGene.NODETYPE.HIDDEN, track.NewId(), newLayer, Random.Range(-1.0f, 1.0f), neat.internalActiationFunction);
nodes.Add(node);
ConnectionGene connectionIn = new ConnectionGene(connectionSplit.GetInNode().Copy(), node, 1.0f, true, track.Innovate());
ConnectionGene connectionOut = new ConnectionGene(node, connectionSplit.GetOutNode().Copy(), connectionSplit.GetWeight(), true, track.Innovate());
connections.Add(connectionIn);
connections.Add(connectionOut);
}
public override string ToString()
{
return("innovation: " + innovation + " Nodes: " + inNode.GetId() + " -> " + outNode.GetId() + " weight: " + weight + " expressed: " + expressed + " Layer: " + inNode.GetLayer() + "- > " + outNode.GetLayer() + " nodeIn: " + inNode + " Nodeout: " + outNode);
}