public (float, float) EvaluateNetwork(float[] input)
{
float[] output = new float[NEAT_CONFIGS.OUTPUTS];
for (int i = 1; i < NEAT_CONFIGS.INPUTS; i++)
{
GetNodeGenes()[i].SetValue(input[i - 1]);
}
foreach (var KeyValue in GetNodeGenes())
{
double sum = 0;
int key = KeyValue.Key;
NodeGene node = KeyValue.Value;
if (key > NEAT_CONFIGS.INPUTS)
{
foreach (ConnectionGene con in node.GetIncomingConnections())
{
if (con.GetEnabled())
{
sum += (GetNodeGenes()[con.GetInputNode()].GetValue() * con.GetWeight());
}
}
node.SetValue(Math.Tanh(sum));
}
}
int j = 0;
foreach (NodeGene node in GetNodeGenes().Values)
{
if (node.GetType() == NodeGene.TYPE.OUTPUT)
{
output[j] = (float)node.GetValue();
j++;
}
}
return(output[0], output[1]);
}
public void MutateAddConnection()
{
List <int> Keys = new List <int>(NodeGenes.Keys);
int randomKey1 = Keys[random.Next(Keys.Count)];
int randomKey2 = Keys[random.Next(Keys.Count)];
NodeGene node1 = NodeGenes[randomKey1];
NodeGene node2 = NodeGenes[randomKey2];
int ATTEMPTS = 0;
while ((node1.GetType() == NodeGene.TYPE.OUTPUT && node2.GetType() == NodeGene.TYPE.OUTPUT || node1.GetType() == NodeGene.TYPE.INPUT && node2.GetType() == NodeGene.TYPE.INPUT) || node1.GetID() == node2.GetID() ||
(node1.GetType() == NodeGene.TYPE.BIAS && node2.GetType() == NodeGene.TYPE.INPUT || node2.GetType() == NodeGene.TYPE.BIAS && node1.GetType() == NodeGene.TYPE.INPUT) || ATTEMPTS < 10)
{
randomKey1 = Keys[random.Next(Keys.Count)];
node1 = NodeGenes[randomKey1];
ATTEMPTS++;
}
if (ATTEMPTS < 10)
{
bool NeedsReversing = false;
if ((node1.GetType() == NodeGene.TYPE.HIDDEN && node2.GetType() == NodeGene.TYPE.INPUT) || (node1.GetType() == NodeGene.TYPE.HIDDEN && node2.GetType() == NodeGene.TYPE.BIAS))
{
NeedsReversing = true;
}
else
{
if (node1.GetType() == NodeGene.TYPE.OUTPUT && node2.GetType() == NodeGene.TYPE.INPUT || node1.GetType() == NodeGene.TYPE.OUTPUT && node2.GetType() == NodeGene.TYPE.BIAS || node1.GetType() == NodeGene.TYPE.OUTPUT && node2.GetType() == NodeGene.TYPE.HIDDEN)
{
NeedsReversing = true;
}
}
bool ExistsInGenome = false;
foreach (ConnectionGene connection in GetConnectionGenes())
{
if (connection.GetInputNode() == node1.GetID() && connection.GetOutputNode() == node2.GetID())
{
ExistsInGenome = true;
break;
}
else
{
if (connection.GetOutputNode() == node1.GetID() && connection.GetInputNode() == node2.GetID())
{
ExistsInGenome = true;
}
}
}
if (!ExistsInGenome)
{
bool ExistsInPopulation = false;
foreach (ConnectionGene connection in PoolManager.TOTALCONNECTIONSMADETHISGENERATION)
{
if (connection.GetInputNode() == node1.GetID() && connection.GetOutputNode() == node2.GetID() || connection.GetOutputNode() == node1.GetID() && connection.GetInputNode() == node2.GetID())
{
ExistsInPopulation = true;
ConnectionGene newConnection = new ConnectionGene(NeedsReversing ? node2.GetID() : node1.GetID(), NeedsReversing ? node1.GetID() : node2.GetID(), random.NextDouble(), true, connection.GetInnovation());
ConnectionGenes.Add(newConnection);
GetNodeGenes()[newConnection.GetOutputNode()].AddIncomingConnection(newConnection);
break;
}
}
if (!ExistsInPopulation)
{
ConnectionGene newConnection = new ConnectionGene(NeedsReversing ? node2.GetID() : node1.GetID(), NeedsReversing ? node1.GetID() : node2.GetID(), random.NextDouble(), true, NEAT_CONFIGS.GLOBAL_INNOVATION_NUMBER++);
ConnectionGenes.Add(newConnection);
GetNodeGenes()[newConnection.GetOutputNode()].AddIncomingConnection(newConnection);
PoolManager.TOTALCONNECTIONSMADETHISGENERATION.Add(newConnection);
}
}
}
}