internal static EntityOnMap <K> ConvertInnerEntities(EntityOnMap <T> mapItem, K entityToInject)
{
var mapitemNew = new EntityOnMap <K>(mapItem.location, entityToInject);
mapitemNew.ID = mapItem.ID;
return(mapitemNew);
}
public override PipelineReturnData pushThrough(List <EntityOnMap <SickEntity> > currentSick, List <EntityOnMap <HealthyEntity> > currentHealthy, ulong timeDeltaMs)
{
// Instantiating here (instead as a class variable), otherwise there
// are cases where `random.Next()` returns EQUAL values for multiple
// threads
Random random = new Random();
// Find the closest person via Y coordinates and change diraction to match it
var newSick = currentSick.Select(x =>
{
if (currentHealthy.Count() > 0 && random.Next(1000) == 0)
{
var firstElement = currentHealthy.First();
// Go through all the entities and find the closest healthy entity
var closestEntity = currentHealthy
.Aggregate(
new Tuple <EntityOnMap <HealthyEntity>, double>(firstElement, (double)World.MaxCoords.X),
(aggregate, item) =>
{
var newDistance = EntityOnMap <HealthyEntity> .calculateDistance(x.location, item.location);
return(newDistance < aggregate.Item2 ? new Tuple <EntityOnMap <HealthyEntity>, double>(item, newDistance) : aggregate);
});
var closestX = Math.Sign(closestEntity.Item1.location.X - x.location.X);
var closestY = Math.Sign(closestEntity.Item1.location.Y - x.location.Y);
x.entity.direction = new Vector3(closestX, closestY, 0);
}
return(x);
}).ToList();
return(new PipelineReturnData
{
newHealthy = currentHealthy,
newSick = newSick,
});
}
public override PipelineReturnData pushThrough(List <EntityOnMap <SickEntity> > currentSick, List <EntityOnMap <HealthyEntity> > currentHealthy, ulong timeDeltaMs)
{
// Make entities sick if they need to
/*
* NOTE: Because the timeScale parameter removes "frames"
* and possible intersections (no interpolation is being
* done as it's quite intensive to do at real time),
* the code tries to compensate by increasing the radius.
* Because we don't want everyone to become sick immediately,
* then linear scaling is not possible. Using this
* (https://www.desmos.com/calculator/7agyg8rqqz) for
* trying out some things.
*/
var toBeSick = currentHealthy
.Where(h =>
{
// Only keep entries that are intersecting with sick people
return(currentSick
.Any(s => EntityOnMap <SickEntity> .IsIntersecting(
s.location, radius,
h.location, radius)
));
})
.Select((x, idx) =>
{
// Covert to sick entities
var sickEntity = SickEntity.ConvertToSick(x.entity);
var sickMapItem = EntityConverterUtility <HealthyEntity, SickEntity> .ConvertInnerEntities(x, sickEntity);
return(sickMapItem);
})
.Aggregate((new List <ulong>(), new List <EntityOnMap <SickEntity> >()), (aggregate, item) =>
{
aggregate.Item1.Add(item.ID);
aggregate.Item2.Add(item);
return(aggregate);
})
.ToTuple();
return(new PipelineReturnData
{
newHealthy = currentHealthy.Where(x => !toBeSick.Item1.Contains(x.ID)).ToList(),
newSick = currentSick.Concat(toBeSick.Item2).ToList(),
});
}
internal static void iterateOver(
List <EntityOnMap <T> > entities,
Random random,
Dictionary <ulong, int> nextAttractor,
List <Point> attractors,
int attractorRadius
)
{
// Perform attractor assignment
entities.ForEach(x =>
{
// Check if is registered
if (nextAttractor.ContainsKey(x.ID))
{
var attractorIndex = nextAttractor[x.ID];
// Check if located at desired attractor
if (EntityOnMap <SickEntity> .IsIntersecting(x.location, 1, attractors[attractorIndex], (ushort)attractorRadius))
{
// Generte a new attractor to head towards
nextAttractor[x.ID] = random.Next(0, attractors.Count() - 1);
}
// Add some randomness
if (random.Next(100) == 0)
{
var attractorDirectionX = Math.Sign(attractors[attractorIndex].X - x.location.X);
var attractorDirectionY = Math.Sign(attractors[attractorIndex].Y - x.location.Y);
x.entity.direction = new Vector3(attractorDirectionX, attractorDirectionY, 0);
}
}
else
{
// Generte a new attractor to head towards
nextAttractor[x.ID] = random.Next(0, attractors.Count() - 1);
}
});
}
