/// <summary>
/// Creates a NativeArray containing the entities in a given EntityQuery.
/// </summary>
/// <param name="matchingArchetypes">List of matching archetypes.</param>
/// <param name="allocator">Allocator to use for the array.</param>
/// <param name="type">An atomic safety handle required by GatherEntitiesJob so it can call GetNativeArray() on chunks.</param>
/// <param name="entityQuery">EntityQuery to gather entities from.</param>
/// <param name="filter">EntityQueryFilter for calculating the length of the output array.</param>
/// <param name="jobHandle">Handle to the GatherEntitiesJob job used to fill the output array.</param>
/// <param name="dependsOn">Handle to a job this GatherEntitiesJob must wait on.</param>
/// <returns>NativeArray of the entities in a given EntityQuery.</returns>
public static NativeArray <Entity> CreateEntityArray(UnsafeMatchingArchetypePtrList matchingArchetypes,
Allocator allocator,
ArchetypeChunkEntityType type,
EntityQuery entityQuery,
ref EntityQueryFilter filter,
out JobHandle jobHandle,
JobHandle dependsOn)
{
var entityCount = CalculateEntityCount(matchingArchetypes, ref filter);
var job = new GatherEntitiesJob
{
EntityType = type,
Entities = new NativeArray <Entity>(entityCount, allocator)
};
jobHandle = job.Schedule(entityQuery, dependsOn);
return(job.Entities);
}
/// <summary>
/// Creates a NativeArray containing the entities in a given ComponentGroup.
/// </summary>
/// <param name="firstMatchingArchetype">First node of MatchingArchetypes linked list.</param>
/// <param name="allocator">Allocator to use for the array.</param>
/// <param name="type">An atomic safety handle required by GatherEntitiesJob so it can call GetNativeArray() on chunks.</param>
/// <param name="componentGroup">ComponentGroup to gather entities from.</param>
/// <param name="filter">ComponentGroupFilter for calculating the length of the output array.</param>
/// <param name="jobHandle">Handle to the GatherEntitiesJob job used to fill the output array.</param>
/// <param name="dependsOn">Handle to a job this GatherEntitiesJob must wait on.</param>
/// <returns>NativeArray of the entities in a given ComponentGroup.</returns>
public static NativeArray <Entity> CreateEntityArray(MatchingArchetypes *firstMatchingArchetype,
Allocator allocator,
ArchetypeChunkEntityType type,
ComponentGroup componentGroup,
ref ComponentGroupFilter filter,
out JobHandle jobHandle,
JobHandle dependsOn)
{
var entityCount = CalculateLength(firstMatchingArchetype, ref filter);
var job = new GatherEntitiesJob
{
EntityType = type,
Entities = new NativeArray <Entity>(entityCount, allocator)
};
jobHandle = job.Schedule(componentGroup, dependsOn);
return(job.Entities);
}
