private void CreateFirstGeneration()
{
population = new List <ClimberGenetics>(PopulationSize);
for (int i = 0; i < PopulationSize; i++)
{
ClimberGenetics genetics = new ClimberGenetics();
int numActions = Random.Range(MinActions, MaxActions + 1);
BodyShapeGene bodyShapeGene = new BodyShapeGene(
Random.Range(MinBodyWidth, MaxBodyWidth),
Random.Range(MinBodyHeight, MaxBodyHeight));
Gene previousAction = null;
genetics.Chromosome.Add(bodyShapeGene);
for (int j = 0; j < numActions; j++)
{
Gene actionGene = CreateNewActionGene(genetics, previousAction);
previousAction = actionGene;
genetics.Chromosome.Add(actionGene);
}
population.Add(genetics);
}
Logger.Add("Created random genetic information for a population of " + population.Count);
}
private Gene CreateNewActionGene(ClimberGenetics genetics, Gene previousGene)
{
Gene actionGene = null;
GeneType actionType = RandomGeneType(new[] {
GeneType.GrabAction,
GeneType.ReleaseAction,
GeneType.SwingAction,
GeneType.NonAction,
});
if (actionType == GeneType.GrabAction)
{
Vector3 localPoint = Vector3.zero;
int index = Random.Range(0, 4);
if (index == 0)
{
localPoint = new Vector3(-0.5f, -0.5f, 0f);
}
else if (index == 1)
{
localPoint = new Vector3(0.5f, -0.5f, 0f);
}
else if (index == 2)
{
localPoint = new Vector3(0.5f, 0.5f, 0f);
}
else if (index == 3)
{
localPoint = new Vector3(-0.5f, 0.5f, 0f);
}
actionGene = new GrabActionGene(localPoint);
}
else if (actionType == GeneType.ReleaseAction)
{
actionGene = new ReleaseActionGene();
}
else if (actionType == GeneType.SwingAction)
{
BodyShapeGene bodyShapeGene = (BodyShapeGene)genetics.Chromosome[0];
Vector3 localApplyAtPoint = new Vector3(
Random.Range(-bodyShapeGene.Width * 0.5f, bodyShapeGene.Width * 0.5f),
Random.Range(-bodyShapeGene.Height * 0.5f, bodyShapeGene.Height * 0.5f),
0f);
int direction = Random.Range(0, 2) == 0 ? -1 : 1;
float strength = Random.Range(MinSwingStrength, MaxSwingStrength);
actionGene = new SwingActionGene(localApplyAtPoint, direction, strength);
}
else if (actionType == GeneType.NonAction)
{
actionGene = new NonActionGene(Random.Range(MinNonActionTime, MaxNonActionTime));
}
return(actionGene);
}
void Start()
{
bodyShapeGene = (BodyShapeGene)Genetics.Chromosome[0];
actionGenes = new List <Gene>();
body = GetComponent <Rigidbody>();
lineRenderer = transform.parent.GetComponent <LineRenderer>();
textMesh = Text.GetComponent <TextMesh>();
for (int i = 1; i < Genetics.Chromosome.Count; i++)
{
actionGenes.Add(Genetics.Chromosome[i]);
}
transform.localScale = new Vector3(bodyShapeGene.Width, bodyShapeGene.Height, 1f);
previousPosition = transform.position;
}
private void StartFitnessTest()
{
GameObject climberObj;
Climber climber;
ClimberGenetics genetics = population[currentPopulationIndex];
BodyShapeGene bodyShapeGene = (BodyShapeGene)genetics.Chromosome[0];
isRunningFitnessTest = true;
climberObj = Instantiate <GameObject>(ClimberPrefab);
climberObj.transform.parent = objectsContainer;
climberObj.transform.position = SpawnPosition - new Vector3(0f, bodyShapeGene.Height * 0.5f, 0f);
climber = climberObj.GetComponentInChildren <Climber>();
climber.Genetics = genetics;
currentClimber = climber;
currentClimberObj = climberObj;
}
private void MutateGene(ClimberGenetics genetics, Gene gene)
{
if (gene.Type == GeneType.BodyShape)
{
BodyShapeGene bodyShapeGene = (BodyShapeGene)gene;
bodyShapeGene.Width += bodyShapeGene.Width * Random.Range(-MutationStrength, MutationStrength);
bodyShapeGene.Height += bodyShapeGene.Height * Random.Range(-MutationStrength, MutationStrength);
}
else if (gene.Type == GeneType.GrabAction)
{
if (Random.Range(0f, 1f) < MutationStrength)
{
GrabActionGene grabActionGene = (GrabActionGene)gene;
Vector3 localPoint = Vector3.zero;
int index = Random.Range(0, 4);
if (index == 0)
{
localPoint = new Vector3(-0.5f, -0.5f, 0f);
}
else if (index == 1)
{
localPoint = new Vector3(0.5f, -0.5f, 0f);
}
else if (index == 2)
{
localPoint = new Vector3(0.5f, 0.5f, 0f);
}
else if (index == 3)
{
localPoint = new Vector3(-0.5f, 0.5f, 0f);
}
grabActionGene.LocalPoint = localPoint;
}
}
else if (gene.Type == GeneType.ReleaseAction)
{
// No properties to mutate
}
else if (gene.Type == GeneType.SwingAction)
{
SwingActionGene swingActionGene = (SwingActionGene)gene;
BodyShapeGene bodyShapeGene = (BodyShapeGene)genetics.Chromosome[0];
float localX = swingActionGene.LocalPoint.x + swingActionGene.LocalPoint.x * Random.Range(-MutationStrength, MutationStrength);
float localY = swingActionGene.LocalPoint.y + swingActionGene.LocalPoint.y * Random.Range(-MutationStrength, MutationStrength);
swingActionGene.LocalPoint = new Vector3(
Mathf.Clamp(localX, -bodyShapeGene.Width * 0.5f, bodyShapeGene.Width * 0.5f),
Mathf.Clamp(localY, -bodyShapeGene.Height * 0.5f, bodyShapeGene.Height * 0.5f),
swingActionGene.LocalPoint.z);
if (Random.Range(0f, 1f) < MutationStrength)
{
swingActionGene.Direction = Random.Range(0, 2) == 0 ? -1 : 1;
}
swingActionGene.Strength = Mathf.Clamp(
swingActionGene.Strength + swingActionGene.Strength * Random.Range(-MutationStrength, MutationStrength),
MinSwingStrength,
MaxSwingStrength);
}
else if (gene.Type == GeneType.NonAction)
{
NonActionGene nonActionGene = (NonActionGene)gene;
nonActionGene.Time = Mathf.Clamp(
nonActionGene.Time + nonActionGene.Time * Random.Range(-MutationStrength, MutationStrength),
MinNonActionTime,
MaxNonActionTime);
}
}
