public ref EntityFilterCollection GetOrCreatePersistentFilter <T>(CombinedFilterID filterID,
NativeRefWrapperType typeRef) where T : unmanaged, IEntityComponent
{
long combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(filterID);
if (_persistentEntityFilters.TryFindIndex(combineFilterIDs, out var index) == true)
{
return(ref _persistentEntityFilters.GetDirectValueByRef(index));
}
_persistentEntityFilters.Add(combineFilterIDs, new EntityFilterCollection(filterID));
var lastIndex = _persistentEntityFilters.count - 1;
if (_indicesOfPersistentFiltersUsedByThisComponent.TryFindIndex(typeRef, out var getIndex) == false)
{
var newArray = new NativeDynamicArrayCast <int>(1, Allocator.Persistent);
newArray.Add(lastIndex);
_indicesOfPersistentFiltersUsedByThisComponent.Add(typeRef, newArray);
}
else
{
ref var array = ref _indicesOfPersistentFiltersUsedByThisComponent.GetDirectValueByRef(getIndex);
array.Add(lastIndex);
}
//since the user can choose their own filterID, in order to avoid collisions between
//filters of the same type, the FilterContext is provided. The type is identified through
//TypeCounter
public static long CombineFilterIDs <T>(CombinedFilterID combinedFilterID) where T : struct, IEntityComponent
{
var id = (uint)ComponentID <T> .id.Data;
var combineFilterIDs = (long)combinedFilterID.id | id;
return(combineFilterIDs);
}
public ref EntityFilterCollection GetPersistentFilter <T>(CombinedFilterID filterID)
where T : unmanaged, IEntityComponent
{
long combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(filterID);
if (_persistentEntityFilters.TryFindIndex(combineFilterIDs, out var index) == true)
{
return(ref _persistentEntityFilters.GetDirectValueByRef(index));
}
throw new Exception("filter not found");
}
public bool TryGetTransientFilter <T>(CombinedFilterID filterID, out EntityFilterCollection entityCollection)
where T : unmanaged, IEntityComponent
{
var combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(filterID);
if (_transientEntityFilters.TryFindIndex(combineFilterIDs, out var index))
{
entityCollection = _transientEntityFilters.GetDirectValueByRef(index);
return(true);
}
entityCollection = default;
return(false);
}
public bool TryGetPersistentFilter <T>(CombinedFilterID combinedFilterID, out EntityFilterCollection entityCollection)
where T : unmanaged, IBaseEntityComponent
{
long combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(combinedFilterID);
if (_persistentEntityFilters.TryFindIndex(combineFilterIDs, out var index) == true)
{
entityCollection = _persistentEntityFilters.GetDirectValueByRef(index);
return(true);
}
entityCollection = default;
return(false);
}
/// <summary>
/// Creates a transient filter. Transient filters are deleted after each submission
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public ref EntityFilterCollection GetOrCreateTransientFilter <T>(CombinedFilterID filterID)
where T : unmanaged, IEntityComponent
{
var combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(filterID);
if (_transientEntityFilters.TryFindIndex(combineFilterIDs, out var index))
{
return(ref _transientEntityFilters.GetDirectValueByRef(index));
}
var filterCollection = new EntityFilterCollection(filterID);
_transientEntityFilters.Add(combineFilterIDs, filterCollection);
return(ref _transientEntityFilters.GetDirectValueByRef((uint)(_transientEntityFilters.count - 1)));
}
public ref EntityFilterCollection GetOrCreatePersistentFilter <T>(CombinedFilterID filterID)
where T : unmanaged, IEntityComponent
{
long combineFilterIDs = Internal_FilterHelper.CombineFilterIDs <T>(filterID);
if (_persistentEntityFilters.TryFindIndex(combineFilterIDs, out var index) == true)
{
return(ref _persistentEntityFilters.GetDirectValueByRef(index));
}
var typeRef = TypeRefWrapper <T> .wrapper;
var filterCollection = new EntityFilterCollection(filterID);
_persistentEntityFilters.Add(combineFilterIDs, filterCollection);
var lastIndex = _persistentEntityFilters.count - 1;
_indicesOfPersistentFiltersUsedByThisComponent.GetOrAdd(new NativeRefWrapperType(typeRef),
() => new NativeDynamicArrayCast <int>(1, Svelto.Common.Allocator.Persistent)).Add(lastIndex);
return(ref _persistentEntityFilters.GetDirectValueByRef((uint)lastIndex));
}
