private IEnumerator RunSingleGeneration(int populationSize,
int generation,
GenerationComplete callback)
{
FileLogger.Log("==== Generation {0}, N={1}", generation, populationSize);
Creature[] population = CreatePopulation(populationSize, generation);
// reset player
player.transform.position = resetPlayerPosition;
player.transform.rotation = resetPlayerQuaternion;
// simulation loop
float startTime = Time.time;
do
{
yield return(WaitForNextUpdate());
} while (Time.time - startTime < TerminationTime &&
population.Select(t => t)
.Any(t => t.state != Creature.State.Dead));
float duration = Time.time - startTime;
FileLogger.Log(" completed in {1}s", generation, duration);
// evaluate fitness of population
float[] fitnesses = population
.Select(t => FitnessEvaluator.ComputeForCreature(t))
.ToArray();
// keep generation
PreviousGenerationDnasByFitness = new SortedList <float, DNA>(populationSize, Comparer);
for (int i = 0; i < populationSize; i++)
{
PreviousGenerationDnasByFitness.Add(fitnesses[i], population[i].DNA);
// also add to Hall of Fame
HallOfFame.Add(fitnesses[i], population[i].DNA);
}
// add to Hall of Fame
HallOfFame.KeepFirstN(HallOfFameCount);
FileLogger.Log(" population fitness evaluation;");
PreviousGenerationDnasByFitness.ForEach((kvp, i) => {
FileLogger.Log(" {0}. [fitness={1}, dna={2}]", i + 1, kvp.Key, kvp.Value);
}
);
callback(generation, duration, PreviousGenerationDnasByFitness, HallOfFame);
FileLogger.Log("==== Generation {0} complete", generation);
// end all creatures
population.ForEach(t => t.EndCreature());
}
private IEnumerator RunMultipleGenerations(int populationSize, GenerationComplete callback, int numGenerations)
{
for (int gen = 1; gen <= numGenerations; ++gen)
{
yield return(StartCoroutine(RunSingleGeneration(populationSize, gen, callback)));
FileLogger.Log("\n");
}
}
public void Initialize(LevelConfig levelConfig, LevelDepthConfig levelDepthConfig, GenerationComplete callback)
{
completeCallback = callback;
depthConfig = levelDepthConfig;
config = levelConfig;
mapPopulatorPrefab = Resources.Load <MapPopulator>("MapPopulator");
world = new Rect(0, 0, config.Width, config.Height);
rooms = new List <MazeRoom>();
Debug.Log("Creating world with size: " + config.Width + ", " + config.Height);
}
protected virtual void OnGenerationComplete(object sender, ProjectItemGenerationCompleteEventArgs args)
{
GenerationComplete?.Invoke(sender, args);
}
public void Run(int populationSize, GenerationComplete callback, int numRuns)
{
resetPlayerPosition = player.transform.position;
resetPlayerQuaternion = player.transform.rotation;
StartCoroutine(RunMultipleGenerations(populationSize, callback, numRuns));
}
/// <summary>
/// Invokes the <see cref="GenerationComplete"/> event
/// </summary>
/// <param name="ge"><see cref="GaEventArgs{TIndividual, TGene}"/> for the completed generation</param>
protected virtual void OnGenerationComplete(GaEventArgs <TIndividual, TGene> ge)
{
GenerationComplete?.Invoke(ge);
}