public static EntityFilter Create(FilterRules filterRules, TrackHandler trackedCallback, TrackHandler untrackedCallback, bool callForCurrentEntries = true)
{
void SetupFilter(EntityFilter filterToSetup)
{
filterToSetup.ListenToTrack(trackedCallback, untrackedCallback);
if (callForCurrentEntries && trackedCallback != null)
{
filterToSetup.ForEach(x => trackedCallback(x));
}
}
for (int i = _cachedFilters.Count - 1; i >= 0; i--)
{
EntityFilter filter = _cachedFilters[i];
if (filter.FilterRules.Equals(filterRules))
{
AddReference(filter);
SetupFilter(filter);
return(filter);
}
}
EntityFilter self = new EntityFilter(filterRules);
AddReference(self);
_cachedFilters.Add(self);
SetupFilter(self);
return(self);
}
private static void AddReference(EntityFilter instance)
{
if (HasReferences(instance))
{
_cachedFiltersReferenceCounter[instance]++;
}
else
{
_cachedFiltersReferenceCounter.Add(instance, 1);
}
}
private static void RemoveReference(EntityFilter instance)
{
bool remove = false;
if (HasReferences(instance))
{
_cachedFiltersReferenceCounter[instance]--;
if (_cachedFiltersReferenceCounter[instance] == 0)
{
_cachedFiltersReferenceCounter.Remove(instance);
remove = true;
}
}
else
{
remove = true;
}
if (remove)
{
_cachedFilters.Remove(instance);
}
}
private static bool HasReferences(EntityFilter instance)
{
return(_cachedFiltersReferenceCounter.ContainsKey(instance));
}
public bool Equals(EntityFilter filter)
{
return(Equals(filter.FilterRules));
}
protected void OnDestroy()
{
Entities.Clean(TrackedEntity, UntrackedEntity);
Entities = null;
}
protected void Awake()
{
Entities = EntityFilter.Create(InitializeFilterRules(FilterRulesBuilder.SetupNoTagsBuilder()), TrackedEntity, UntrackedEntity);
}