private void CreateFirstPopulation()
{
population = new Parameters[population_size];
int loaded = 0;
if (fitnesses.Any())
{
var myList = fitnesses.ToList();
myList.Sort((pair1, pair2) => - pair1.Value.average.CompareTo(pair2.Value.average));
while (loaded < population_size && loaded < myList.Count)
{
population[loaded] = myList[loaded].Key;
loaded++;
}
}
for (int i = loaded; i < population_size; i++)
{
population[i] = new Parameters();
//completely randomize some of the values
for (int j = 0; j < i * 10; j++)
{
population[i] = MutationManager.Mutate(population[i]);
}
}
}
private void CreateNewGeneration()
{
var myList = population.ToList();
myList.Sort((pair1, pair2) => - fitnesses[pair1].average.CompareTo(fitnesses[pair2].average));
Parameters[] nextGeneration = new Parameters[population_size];
nextGeneration[0] = myList[0];
int pos = 1;
while (pos < population_size)
{
Parameters p1 = SelectCandidateByRank(myList);
Parameters p2 = SelectCandidateByRank(myList);
nextGeneration[pos] = MutationManager.Mutate(MutationManager.Crossover(p1, p2));
pos++;
}
population = nextGeneration;
}
public void Update(uint tick, float _gameSpeed)
{
Random r = new Random();
for (int i = 0; i < Compatible.Count; i++)
{
var parentEntity = Compatible[i];
var reproduction = parentEntity.GetComponent <ReproductionComponent>();
if (reproduction.Reproduce > reproduction.ReproductionThreshold)
{
var energy = parentEntity.GetComponent <EnergyComponent>();
// check if we have the energy
if (!energy.CanAfford(reproduction.ReproductionEnergyCost))
{
continue;
}
if (energy.Energy - reproduction.ReproductionEnergyCost < reproduction.RequiredRemainingEnergy)
{
continue;
}
// charge teh parent energy. Each critter has an efficency rating, so some energy gets wasted an the rest gets sent to the child.
float charged = energy.ChargeEnergy(reproduction.ReproductionEnergyCost);
float toChild = reproduction.Efficency * charged;
float wasted = charged - toChild;
// Let the energy manager know about the wasted energy.
_energyManager.DepositEnergy(wasted);
// Some set up for the new child, setting positions/giving energy.
var babyEntity = Pool.AddEntityFromDefinition(reproduction.ChildDefinitionId, _simulation.JsonSettings, parentEntity.Tag);
babyEntity.GetComponent <EnergyComponent>().Energy = toChild;
var parentPosition = parentEntity.GetComponent <TransformComponent>().LocalPosition;
babyEntity.GetComponent <TransformComponent>().LocalPosition = parentPosition;
// The new child will need a mutated brain
var originalBrainComponent = parentEntity.GetComponent <BrainComponent>();
var originalBrain = originalBrainComponent.Brain;
AbstractBrainGenotype parentGenotype = ((NeatBrainPhenotype)originalBrain).Genotype;
NeatBrainGenotype childGenotype = (NeatBrainGenotype)parentGenotype.Clone();
_muationManager.Mutate(childGenotype, _innovationIdManager);
var newBrain = babyEntity.GetComponent <BrainComponent>();
newBrain.SetGenotype(childGenotype);
// Do not need to pass it type as we have already set the brain, therefore it does not need initializing.
newBrain.SetUpLinks(null, _simulation.Settings);
newBrain.ParentSpecies = originalBrainComponent.Species;
BirthEventInfo e = new BirthEventInfo(parentPosition, tick * _gameSpeed, parentEntity.Id, parentEntity.Tag, babyEntity.Id, babyEntity.Tag, childGenotype, originalBrainComponent.Species.Id);
BirthEvent?.Invoke(e);
}
}
}
