/// <summary>
/// Builds a lookup of <see cref="NativeMultiHashMap{TEntityGuidComponent, Entity}"/> for the target world.
/// </summary>
/// <remarks>
/// This will run over ALL entities in the world. This is very expensive.
/// </remarks>
private static void BuildEntityLookups(
EntityManager entityManager,
EntityQuery entityQuery,
NativeMultiHashMap <EntityGuid, Entity> entityGuidToEntity,
NativeHashMap <Entity, EntityGuid> entityToEntityGuid)
{
var buildEntityGuidToEntity = new BuildComponentToEntityMultiHashMap <EntityGuid>
{
EntityType = entityManager.GetArchetypeChunkEntityType(),
ComponentType = entityManager.GetArchetypeChunkComponentType <EntityGuid>(true),
ComponentToEntity = entityGuidToEntity.AsParallelWriter()
}.Schedule(entityQuery);
var buildEntityToEntityGuid = new BuildEntityToComponentHashMap <EntityGuid>
{
EntityType = entityManager.GetArchetypeChunkEntityType(),
EntityGuidComponentType = entityManager.GetArchetypeChunkComponentType <EntityGuid>(true),
EntityToEntityGuid = entityToEntityGuid.AsParallelWriter()
}.Schedule(entityQuery);
JobHandle.CombineDependencies(buildEntityGuidToEntity, buildEntityToEntityGuid).Complete();
}
private static void BuildPrefabAndLinkedEntityGroupLookups(
EntityManager entityManager,
EntityQuery entityQuery,
EntityQuery prefabQuery,
EntityQuery linkedEntityGroupQuery,
NativeHashMap <EntityGuid, Entity> entityGuidToPrefab,
NativeHashMap <Entity, Entity> entityToLinkedEntityGroupRoot)
{
var buildPrefabLookups = new BuildComponentToEntityHashMap <EntityGuid>
{
EntityType = entityManager.GetArchetypeChunkEntityType(),
ComponentType = entityManager.GetArchetypeChunkComponentType <EntityGuid>(true),
ComponentToEntity = entityGuidToPrefab.AsParallelWriter()
}.Schedule(prefabQuery);
var buildLinkedEntityGroupLookups = new BuildLinkedEntityGroupHashMap
{
EntityToLinkedEntityGroupRoot = entityToLinkedEntityGroupRoot.AsParallelWriter(),
LinkedEntityGroupType = entityManager.GetArchetypeChunkBufferType <LinkedEntityGroup>(true)
}.Schedule(linkedEntityGroupQuery);
JobHandle.CombineDependencies(buildPrefabLookups, buildLinkedEntityGroupLookups).Complete();
}
public ArchetypeChunkComponentType <T> GetArchetypeChunkComponentType <T>(bool isReadOnly = false) where T : struct, IComponentData
{
AddReaderWriter(isReadOnly ? ComponentType.ReadOnly <T>() : ComponentType.ReadWrite <T>());
return(EntityManager.GetArchetypeChunkComponentType <T>(isReadOnly));
}
