/// <summary>
/// Creates a mutated version of parentOrganelles in organelles
/// </summary>
private void MutateMicrobeOrganelles(OrganelleLayout <OrganelleTemplate> parentOrganelles,
OrganelleLayout <OrganelleTemplate> organelles, bool isBacteria)
{
var nucleus = SimulationParameters.Instance.GetOrganelleType("nucleus");
for (var iteration = 0; iteration < 10; iteration++)
{
organelles.Clear();
// Delete or replace an organelle randomly
for (int i = 0; i < parentOrganelles.Count; i++)
{
bool copy = true;
var organelle = parentOrganelles[i];
if (parentOrganelles.Count < 2)
{
// Removing last organelle would be silly
}
else if (organelle.Definition != nucleus)
{
// Chance to replace or remove if not a nucleus
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_DELETION_RATE)
{
copy = false;
}
else if (random.Next(0.0f, 1.0f) < Constants.MUTATION_REPLACEMENT_RATE)
{
copy = false;
var replacer = new OrganelleTemplate(GetRandomOrganelle(isBacteria),
organelle.Position, organelle.Orientation);
// The replacing organelle might not fit at the same position
try
{
organelles.Add(replacer);
}
catch (ArgumentException)
{
// Couldn't replace it
copy = true;
}
}
}
if (!copy)
{
continue;
}
// Copy the organelle
try
{
organelles.Add((OrganelleTemplate)organelle.Clone());
}
catch (ArgumentException)
{
// Add the organelle randomly back to the list to make
// sure we don't throw it away
AddNewOrganelle(organelles, organelle.Definition);
}
}
// Can add up to 6 new organelles (Which should allow AI to catch up to player more
// We can insert new organelles at the end of the list
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_CREATION_RATE)
{
AddNewOrganelle(organelles, GetRandomOrganelle(isBacteria));
}
/*
* Probability of mutation occuring 5 time(s) = 0.15 = 1.0E-5
* Probability of mutation NOT occuring = (1 - 0.1)5 = 0.59049
* Probability of mutation occuring = 1 - (1 - 0.1)5 = 0.40951
*/
// We can insert new organelles at the end of the list
for (int n = 0; n < 5; ++n)
{
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_EXTRA_CREATION_RATE)
{
AddNewOrganelle(organelles, GetRandomOrganelle(isBacteria));
}
}
if (isBacteria)
{
if (random.Next(0.0f, 100.0f) <= Constants.MUTATION_BACTERIA_TO_EUKARYOTE)
{
AddNewOrganelle(organelles, nucleus);
}
}
// Disallow creating empty species as that throws an exception when trying to spawn
if (organelles.Count < 1)
{
// Add the first parent species organelle
AddNewOrganelle(organelles, parentOrganelles[0].Definition);
// If still empty, copy the first organelle of the parent
if (organelles.Count < 1)
{
organelles.Add((OrganelleTemplate)parentOrganelles[0].Clone());
}
}
// Try again if the mutation has islands
if (organelles.GetIslandHexes().Count == 0)
{
return;
}
}
GD.PrintErr("Could not create a valid mutation after 10 retries.");
}
/// <summary>
/// Creates a mutated version of parentOrganelles in organelles
/// </summary>
private void MutateMicrobeOrganelles(OrganelleLayout <OrganelleTemplate> parentOrganelles,
OrganelleLayout <OrganelleTemplate> mutatedOrganelles, bool isBacteria)
{
var nucleus = SimulationParameters.Instance.GetOrganelleType("nucleus");
for (var iteration = 0; iteration < 10; iteration++)
{
mutatedOrganelles.Clear();
// Chance to replace each organelle randomly
foreach (var parentOrganelle in parentOrganelles)
{
var organelle = (OrganelleTemplate)parentOrganelle.Clone();
// Chance to replace or remove if not a nucleus
if (organelle.Definition != nucleus)
{
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_DELETION_RATE / Math.Sqrt(parentOrganelles.Count))
{
// Don't copy over this organelle, removing this one from the new species
continue;
}
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_REPLACEMENT_RATE)
{
organelle = new OrganelleTemplate(GetRandomOrganelle(isBacteria),
organelle.Position, organelle.Orientation);
}
}
// Copy the organelle
try
{
mutatedOrganelles.Add(organelle);
}
catch (ArgumentException)
{
// Add the organelle randomly back to the list to make
// sure we don't throw it away
AddNewOrganelle(mutatedOrganelles, organelle.Definition);
}
}
// We can insert new organelles at the end of the list
for (int i = 0; i < 6; ++i)
{
if (random.Next(0.0f, 1.0f) < Constants.MUTATION_CREATION_RATE)
{
AddNewOrganelle(mutatedOrganelles, GetRandomOrganelle(isBacteria));
}
}
if (isBacteria)
{
if (random.Next(0.0f, 1.0f) <= Constants.MUTATION_BACTERIA_TO_EUKARYOTE)
{
AddNewOrganelle(mutatedOrganelles, nucleus);
}
}
// Disallow creating empty species as that throws an exception when trying to spawn
if (mutatedOrganelles.Count < 1)
{
// Add the first parent species organelle
AddNewOrganelle(mutatedOrganelles, parentOrganelles[0].Definition);
// If still empty, copy the first organelle of the parent
if (mutatedOrganelles.Count < 1)
{
mutatedOrganelles.Add((OrganelleTemplate)parentOrganelles[0].Clone());
}
}
// If the mutation has no islands, we can use this iteration
if (mutatedOrganelles.GetIslandHexes().Count == 0)
{
return;
}
}
GD.PrintErr("Could not create a valid mutation after 10 retries.");
}