Exemple #1
0
        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);
        }
Exemple #2
0
        /// <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);
                }
            }
        }