/// <summary>
/// Constructor which takes an existing maze genome parameters configuration and copies all of the parameters from it.
/// </summary>
/// <param name="copyFrom">The existing maze genome parameters configuration to copy.</param>
public MazeGenomeParameters(MazeGenomeParameters copyFrom)
{
MutateWallStartLocationProbability = copyFrom.MutateWallStartLocationProbability;
MutatePassageStartLocationProbability = copyFrom.MutatePassageStartLocationProbability;
MutateAddWallProbability = copyFrom.MutateAddWallProbability;
PerturbanceMagnitude = copyFrom.PerturbanceMagnitude;
RouletteWheelLayout = new RouletteWheelLayout(copyFrom.RouletteWheelLayout);
}
/// <summary>
/// Read maze genome parameter settings from the configuration file.
/// </summary>
/// <param name="xmlConfig">The reference to the XML configuration file.</param>
/// <returns>An initialized maze genome parameters object.</returns>
public static MazeGenomeParameters ReadMazeGenomeParameters(XmlElement xmlConfig)
{
// Create new NEAT genome parameters with default values
MazeGenomeParameters genomeParameters = new MazeGenomeParameters();
// Get root of neat genome configuration section
XmlNodeList nodeList = xmlConfig.GetElementsByTagName("MazeGenomeConfig", "");
// Note that if there are multiple defined (such as would be the case with an experiment that uses multiple EAs),
// the first one is used here, which will accurately correspond to the current algorithm under consideration
if (nodeList.Count >= 1)
{
// Convert to an XML element
XmlElement xmlMazeGenomeConfig = nodeList[0] as XmlElement;
// Read all of the applicable parameters in
double? wallStartMutationProbability = XmlUtils.TryGetValueAsDouble(xmlMazeGenomeConfig,
"MutateWallStartLocationProbability");
double? passageStartMutationProbability = XmlUtils.TryGetValueAsDouble(xmlMazeGenomeConfig,
"MutatePassageStartLocationProbability");
double? addWallProbability = XmlUtils.TryGetValueAsDouble(xmlMazeGenomeConfig,
"MutateAddWallProbability");
double? perturbanceMagnitude = XmlUtils.TryGetValueAsDouble(xmlMazeGenomeConfig,
"PerturbanceMagnitude");
// Set each if it's specified in the configuration (otherwise, accept the default)
if (wallStartMutationProbability != null)
{
genomeParameters.MutateWallStartLocationProbability = wallStartMutationProbability ??
default(double);
}
if (passageStartMutationProbability != null)
{
genomeParameters.MutatePassageStartLocationProbability = passageStartMutationProbability ??
default(double);
}
if (addWallProbability != null)
{
genomeParameters.MutateAddWallProbability = addWallProbability ?? default(double);
}
if (perturbanceMagnitude != null)
{
genomeParameters.PerturbanceMagnitude = perturbanceMagnitude ?? default(double);
}
}
return genomeParameters;
}