/// <summary>
/// Mutates the genome by creating a new connection.
/// </summary>
public void Mutate_Link()
{
for (int i = 0; i < NEAT.LINK_ATTEMPTS; ++i)
{
NodeGene nodeGene_a = Nodes.GetRandomElement();
NodeGene nodeGene_b = Nodes.GetRandomElement();
if (nodeGene_a.X == nodeGene_b.X)
{
continue;
}
ConnectionGene connectionGene;
if (nodeGene_a.X < nodeGene_b.X)
{
connectionGene = new ConnectionGene(nodeGene_a, nodeGene_b, 0); //Temp innovation number.
}
else
{
connectionGene = new ConnectionGene(nodeGene_b, nodeGene_a, 0); //Temp innovation number.
}
if (Connections.Contains(connectionGene))
{
continue;
}
connectionGene = NEAT.CreateConnection(connectionGene.From, connectionGene.To);
connectionGene.Weight = NEAT.WEIGHT_RANDOM + (random.NextDouble() * 2 - 1);
Connections.Add_Sorted_Gene(connectionGene); //This needs to be sorted otherwise something breaks.
return;
}
}
