public virtual void mutate_node()
{
ConnectionGene con = connections.random_element();
if (con == null)
{
return;
}
NodeGene from = con.From;
NodeGene to = con.To;
int replaceIndex = neat.getReplaceIndex(from, to);
NodeGene middle;
if (replaceIndex == 0)
{
middle = neat.Node;
middle.X = (from.X + to.X) / 2;
middle.Y = (from.Y + to.Y) / 2 + GlobalRandom.NextDouble * 0.1 - 0.05;
neat.setReplaceIndex(from, to, middle.Innovation_number);
}
else
{
middle = neat.getNode(replaceIndex);
}
ConnectionGene con1 = neat.getConnection(from, middle);
ConnectionGene con2 = neat.getConnection(middle, to);
con1.Weight = 1;
con2.Weight = con.Weight;
con2.Enabled = con.Enabled;
connections.remove(con);
connections.add(con1);
connections.add(con2);
nodes.add(middle);
}