public void Mutate(Genes other)
{
Genes the_genes = other.Clone();
the_genes.Mutate();
Create(the_genes);
}
// Crossover and mutate the best genes to produce child gene and use that child for the next round of the game.
private void BreedNewGenes()
{
if (Save.NumOfGames < Save.Population.Count)
{
// Create two parents and assign the elite genes to them. Should look into breeding some of the lower performing genes.
parent1 = Save.Population[Save.BestGenesIndex]; // Best gene
parent2 = Save.Population[UnityEngine.Random.Range(0, Save.Population.Count)]; // random gene from population of 100
Genes child = parent1.Crossover(parent2, numOfEnemyVariables, random);
child.Mutate(mutationRate, random, numOfEnemyVariables);
child.Generation = Save.NumOfGames;
Save.Population[Save.NumOfGames] = child;
}
}
public void NewGeneration(int numNewDNA = 0, bool crossoverNewDNA = false)
{
int finalCount = Population.Count + numNewDNA;
if (finalCount <= 0)
{
return;
}
if (Population.Count > 0)
{
CalculateFitness();
Population.Sort(CompareDNA);
}
newPopulation.Clear();
//crossover
for (int i = 0; i < Population.Count; i++)
{
if (i < Elitism && i < Population.Count)
{
newPopulation.Add(Population[i]);
}
else if (i < Population.Count || crossoverNewDNA)
{
Genes <T> parent1 = ChooseParent();
Genes <T> parent2 = ChooseParent();
Genes <T> child = parent1.Crossover(parent2);
child.Mutate(mutationRate);
newPopulation.Add(child);
}
else
{
newPopulation.Add(new Genes <T>(dnaSize, random, getRandomGene, fitnessFunction, shouldInitGenes: true));
}
}
List <Genes <T> > tmpList = Population;
Population = newPopulation;
newPopulation = tmpList;
//create new population;
Generation++;
}
/// <summary>
/// This is called at the end of the round for each life form.
/// Return null or 0 elements if the genes die out or
/// 1 or more genes for the offspring.
///
/// Return the same genes if you want your life form to continue without change in the next round
/// </summary>
/// <param name="parent"></param>
/// <param name="parentStatus"></param>
/// <returns></returns>
public static Genes[] CreateOffspring(Genes parent, Status parentStatus)
{
List <Genes> offspring = new List <Genes>();
if (parentStatus._Eaten == 1)
{
//keep the original alife for another round
offspring.Add(parent);
}
else if (parentStatus._Eaten >= 2)
{
//keep original around
offspring.Add(parent);
// + 1 mutated offspring
offspring.Add(parent.Mutate());
}
else
{
//life form hasn't eaten anything -> die out
}
return(offspring.ToArray());
}