/// <summary>
/// Creates a new system. Entities are added to the system based on if they pass the
/// given filter.
/// </summary>
public EntityCache(Filter filter) {
_filter = filter;
_metadataKey = EntityManagerMetadata.GetUnorderedListMetadataIndex();
CachedEntities = new UnorderedList<IEntity>();
}
internal MultithreadedSystem(MultithreadedSystemSharedContext sharedData, ISystem system) {
System = system;
_shared = sharedData;
PerformanceData = new PerformanceInformation(system);
ITriggerFilterProvider trigger = system as ITriggerFilterProvider;
if (trigger != null) {
_filter = new Filter(DataAccessorFactory.MapTypesToDataAccessors(trigger.RequiredDataTypes));
_entityCache = new EntityCache(_filter);
// all of these triggers require a filter
_triggerAdded = trigger as Trigger.Added;
_triggerRemoved = trigger as Trigger.Removed;
_triggerModified = trigger as Trigger.Modified;
_triggerUpdate = trigger as Trigger.Update;
_triggerInput = trigger as Trigger.Input;
}
// these triggers don't require a filter
_triggerGlobalPreUpdate = system as Trigger.GlobalPreUpdate;
_triggerGlobalPostUpdate = system as Trigger.GlobalPostUpdate;
_triggerGlobalInput = system as Trigger.GlobalInput;
}
