public static BackendInstance GetInstance(UIAdapter ui, Random rng = null)
{
Logger.Debug("Creating backend instance.");
SpeciesFileDescription speciesFileDescription = FileSystemService.GetSpeciesMappings();
// Map species classes to list of species
IEnumerable <(SpeciesClass, IList <SpeciesMapping>)> speciesClassMappings =
speciesFileDescription
.SpeciesClassMappings
.Select(classMapping => (
SpeciesFactory.GetSpeciesClass(classMapping)
, classMapping.SpeciesClassSpeciesMappings))
.ToList();
IEnumerable <Species> species
= speciesClassMappings
.AsParallel()
.SelectMany(tuple => {
SpeciesClass parentClass = tuple.Item1;
IList <SpeciesMapping> speciesMappings = tuple.Item2;
IEnumerable <Species> childrenSpecies
= new List <Species>(speciesMappings.Count);
childrenSpecies = childrenSpecies
.Concat(speciesMappings.Select(
s => SpeciesFactory.GetSpecies(s, parentClass)));
return(childrenSpecies);
}).ToList();
Random rngToUse = rng ?? new Random();
BackendInstance instance = new BackendInstance(ui, species, rngToUse);
Logger.Debug("Species loaded and models created.");
return(instance);
}