public List <Genome> Reproduce(int expectedChildren, InnovationPool seenInnovations, List <Species> interBredSpecies, Random rando)
{
List <Genome> children = new List <Genome>();
bool champDone = false;
while (expectedChildren > 0)
{
if (!champDone && expectedChildren >= Const.ChampSurvivalThresh)
{
children.Add(Fitness.Champion);
champDone = true;
}
else if (rando.NextDouble() < Const.MutateOnlyProbability || expectedChildren == 1)
{
Genome child = new Genome(Genomes[rando.Next(Size())]);
Mutation.Mutate(child, seenInnovations, rando);
children.Add(child);
}
else
{
Genome mother = Genomes[rando.Next(Size())];
Genome father = null;
if (rando.NextDouble() < Const.InterSpeciesBreedingProbability)
{
Species spec = SelectOtherSpecies(interBredSpecies, rando);
father = spec.Fitness.Champion;
}
else
{
father = Genomes[rando.Next(Size())];
}
Genome child = Mating.Mate(mother, father, rando);
//TODO: Add mother/father node checking criteria as well?
if (rando.NextDouble() >= Const.MateOnlyProbability ||
GenomeCompatibility.Compatibility(mother, father) == 0.0)
{
Mutation.Mutate(child, seenInnovations, rando);
}
children.Add(child);
}
expectedChildren--;
}
return(children);
}
/// <summary>
/// Sorts next generation into their respective species.
/// </summary>
/// <param name="nextGen">The next generation.</param>
private void SpeciateNewGeneration(List <Genome> nextGen)
{
foreach (var child in nextGen)
{
bool speciesFound = false;
foreach (var spec in Species)
{
if (GenomeCompatibility.Compatibility(spec.Template, child) <= GenomeCompatibility.SpeciesCompatibilityThreshold)
{
spec.Genomes.Add(child);
speciesFound = true;
break;
}
}
if (!speciesFound)
{
//TODO: Find a better way of doing age.
Species spec = new Species(child);
spec.Age = -1;
Species.Add(spec);
}
}
}