public void GetConnectionInnovationNumber_Test()
{
GeneCounter connectionCounter = new GeneCounter(10);
//Check the amount before
Assert.AreEqual(1, mutationLog.ConnectionMutations.Count);
//Insert an existing connection
int existingConnection = mutationLog.GetConnectionInnovationNumber(1, 2, connectionCounter);
//Check the amount after getting the existing connection
Assert.AreEqual(1, mutationLog.ConnectionMutations.Count);
Assert.AreEqual(1, existingConnection);
//Insert new connection
int newConnection = mutationLog.GetConnectionInnovationNumber(2, 1, connectionCounter);
//Check the amount after the inserting the new connection
Assert.AreEqual(2, mutationLog.ConnectionMutations.Count);
Assert.AreEqual(10, newConnection);
//Insert new connection again
newConnection = mutationLog.GetConnectionInnovationNumber(2, 1, connectionCounter);
//Check the amount after the inserting the new connection
Assert.AreEqual(2, mutationLog.ConnectionMutations.Count);
Assert.AreEqual(10, newConnection);
}
public void AddNodeMutation(AgentObject agent, int amountTries, MutationLog mutationLog, GeneCounter connectionInnovationCounter, GeneCounter nodeCounter)
{
List <int> connectionKeys = agent.Genome.Connections.Keys.OrderBy(x => x).ToList();
if (connectionKeys.Count <= 0)
{
return;
}
for (int i = 0; i < amountTries; i++)
{
ConnectionGene connection = null;
//Check the size of the genome, if the genome is small, take an older gene
if (agent.Genome.Nodes.Keys.Count <= _SIZE_THRESHOLD)
{
connection = agent.Genome.Connections[connectionKeys[Random.Range(0, Mathf.RoundToInt(connectionKeys.Count - (Mathf.Sqrt(connectionKeys.Count))))]];
}
else
{
//Select random connection
connection = agent.Genome.Connections[connectionKeys[Random.Range(0, connectionKeys.Count)]];
}
//If mutation is possible, mutate the agent
if (agent.Genome.IsNodePossible(connection))
{
//int nodeID = mutationLog.GetNodeID(connection.InnovationNumber, nodeCounter);
int nodeID = mutationLog.GetNodeID(connection.InnovationNumber, agent.Genome.Nodes.Keys.ToList(), nodeCounter);
int innovationNumberInToNewNode = mutationLog.GetConnectionInnovationNumber(connection.InNode, nodeID, connectionInnovationCounter);
int innovationNumberNewNodeToOut = mutationLog.GetConnectionInnovationNumber(nodeID, connection.OutNode, connectionInnovationCounter);
agent.Genome.AddNodeMutation(connection, nodeID, innovationNumberInToNewNode, innovationNumberNewNodeToOut);
break;
}
}
}
public void AddConnectionMutation(AgentObject agent, int amountTries, MutationLog mutationLog, GeneCounter connectionInnovationCounter)
{
List <int> nodeKeys = agent.Genome.Nodes.Keys.ToList();
for (int i = 0; i < amountTries; i++)
{
//Selet two random nodes
NodeGene inNode = agent.Genome.Nodes[nodeKeys[Random.Range(0, nodeKeys.Count)]];
NodeGene outNode = agent.Genome.Nodes[nodeKeys[Random.Range(0, nodeKeys.Count)]];
//If mutation is possible, mutate the agent
if (agent.Genome.IsConnectionPossible(inNode, outNode))
{
int innovationNumber = mutationLog.GetConnectionInnovationNumber(inNode.ID, outNode.ID, connectionInnovationCounter);
agent.Genome.AddConnectionMutation(inNode, outNode, innovationNumber);
break;
}
}
}