void most_similar_creature()
{
targetCrt = null; // reference to the script of the closest creature
GameObject target = null;
GameObject c = null; // current collider being looked at
float similarity = Mathf.Infinity;
float curr_similarity;
cs = Physics.OverlapSphere(_t.position, (float)los);
if (cs.Length == 0)
{
target = null;
return;
}
foreach (Collider col in cs)
{
c = (GameObject)col.transform.gameObject;
if (c && c.gameObject.name == "root" && c != crt.root.gameObject)
{
other_crt = c.transform.parent.GetComponent <Creature>();
curr_similarity = GeneticsUtils.similar_colour(crt.chromosome, other_crt.chromosome);
if (curr_similarity < similarity)
{
target = c.transform.parent.gameObject;
similarity = curr_similarity;
}
Vector3 diff = c.transform.position - _t.position;
if (diff.magnitude < (float)crt_mate_range)
{
other_crt = c.transform.parent.GetComponent <Creature>();
Genitalia other_genital = other_crt.genital.GetComponent <Genitalia>();
if (crt.state == Creature.State.persuing_mate || other_crt.state == Creature.State.persuing_mate)
{
co.observe(crt.genital.gameObject, other_genital.gameObject);
other_crt.state = Creature.State.mating;
crt.state = Creature.State.mating;
}
similarity = curr_similarity;
}
}
distance_to_goal = 0F;
goal = null;
if (target)
{
targetCrt = target.GetComponent <Creature>();
goal = targetCrt.root;
distance_to_goal = distanceToGoal();
}
}
}
public void observe(GameObject a, GameObject b)
{
collision_events.Add(new CollEvent(a, b));
CollEvent dup = findMatch(a, b);
// If a duplicate event has been found spawn a child
if (null != dup)
{
collision_events.Clear();
Vector3 pos = (a.transform.position - b.transform.position) * 0.5F + b.transform.position;
// Get references to the scripts of each creature
Creature a_script = a.transform.parent.parent.GetComponent <Creature>();
Creature b_script = b.transform.parent.parent.GetComponent <Creature>();
double a_energy = a_script.getEnergy();
double b_energy = b_script.getEnergy();
Chromosome newChromosome;
newChromosome = GeneticsUtils.crossover(a_script.chromosome, b_script.chromosome, crossover_rate);
newChromosome = GeneticsUtils.mutate(newChromosome, mutation_rate, mutation_factor);
spw.spawn(pos, Vector3.zero,
a_energy * energy_scale + b_energy * energy_scale,
newChromosome
);
a_script.subtractEnergy(a_energy * energy_scale);
b_script.subtractEnergy(b_energy * energy_scale);
a_script.offspring++;
b_script.offspring++;
}
else
{
collision_events.Add(new CollEvent(b, a));
}
}