/// <summary>
/// Simulate a test population until all original people are deceased and use the
/// final population distribution as a basis for distributing newly created populations.
/// </summary>
private static IReadOnlyList <double> GetDistributionRatios(RacialTemplate racialTemplate)
{
long testPopulation = 1000000;
var ageRange = (double)racialTemplate.CohortTemplates.Sum(x => (x.PastEndAge - x.StartAge).TickOffset);
var pops = racialTemplate.CohortTemplates
.Select(cohortTemplate =>
{
var cohortAgeRange = (double)(cohortTemplate.PastEndAge - cohortTemplate.StartAge).TickOffset;
return((long)((double)testPopulation * cohortAgeRange / ageRange));
});
var testCohorts = new CohortCollection(racialTemplate, pops);
var maxDate = new TimePoint(0) + testCohorts.Cohorts.Last().PastEnd;
for (var date = new TimePoint(0); date < maxDate; date += TimeOffset.OneTick)
{
testCohorts = new CohortCollection(racialTemplate, PopulationUtility.ProcessTick(testCohorts, out var _));
}
var finalTestPopulation = (double)testCohorts.TotalPopulation;
return(testCohorts.Cohorts
.Select(x => (double)x.Population / finalTestPopulation)
.AsReadOnlyList());
}
public override void ProcessTick(IEntityLookup entityLookup, NotificationLog notificationLog, TimePoint newTime)
{
var entitiesList = entityLookup.GetEntitiesMatchingKey(entityLookup.CreateComponentKey(typeof(PopulationComponent)));
foreach (var entity in entitiesList)
{
var component = entity.GetRequiredComponent <PopulationComponent>();
var populations = component.Populations;
foreach (var population in populations)
{
var newPops = PopulationUtility.ProcessTick(population, out var _);
component.SetPopulation(population.RacialTemplate, newPops);
}
}
}
public void PopulationDistributionTest()
{
var cohorts = new CohortCollection(m_racialTemplate);
cohorts.DistributePopulationAcrossCohorts(1000000000);
var stats = new PopulationChangeStats(new TimeOffset(0), 0, 0);
var maxDate = new TimePoint((long)(Constants.DaysPerYear * 1));
for (var date = new TimePoint(0); date < maxDate; date += TimeOffset.OneTick)
{
var newPops = PopulationUtility.ProcessTick(cohorts, out var tickStats);
cohorts = cohorts.CloneWithNewPopulations(newPops);
stats += tickStats;
}
}