private void nodeMutate(Genome genome) {
if (genome.genes.size() == 0) return;
genome.maxneuron = genome.maxneuron + 1;
int randomIndex = rand.nextInt(genome.genes.size());
Gene gene = genome.genes.get(randomIndex);
if (!gene.isEnabled()) return;
gene.setEnabled(false);
Gene gene1 = gene.copy();
gene1.setOut(genome.maxneuron);
gene1.setWeight(1.0f);
gene1.innovation = newInnovation();
gene1.setEnabled(true);
genome.genes.add(gene1);
Gene gene2 = gene.copy();
gene2.setInto(genome.maxneuron);
gene2.innovation = newInnovation();
gene2.setEnabled(true);
genome.genes.add(gene2);
}
public void enableDisableMutate(Genome genome, boolean enable) {
List<Gene> candidates = new ArrayList<Gene>();
// find the genes that are not this enablestate
for (Gene gene : genome.genes) {
if (gene.isEnabled() != enable) {
candidates.add(gene);
}
}
if (candidates.isEmpty()) {
return;
}
// flip the enablestate of a random candidate
int randomIndex = rand.nextInt(candidates.size());
Gene gene = candidates.get(randomIndex);
gene.setEnabled(!gene.isEnabled());
}