public static void DeleteChunk(Chunk *chunk,
EntityComponentStore *entityComponentStore,
ManagedComponentStore managedComponentStore)
{
var entityCount = chunk->Count;
entityComponentStore->DeallocateDataEntitiesInChunk((Entity *)chunk->Buffer, chunk, 0, chunk->Count);
managedComponentStore.IncrementComponentOrderVersion(chunk->Archetype, chunk->SharedComponentValues);
entityComponentStore->IncrementComponentTypeOrderVersion(chunk->Archetype);
chunk->Archetype->EntityCount -= entityCount;
SetChunkCount(chunk, 0, entityComponentStore, managedComponentStore);
}
static int InstantiateEntitiesOne(Entity srcEntity, Entity *outputEntities,
int instanceCount, InstantiateRemapChunk *remapChunks, int remapChunksCount,
EntityComponentStore *entityComponentStore,
ManagedComponentStore managedComponentStore)
{
var src = entityComponentStore->GetEntityInChunk(srcEntity);
var srcArchetype = src.Chunk->Archetype;
var dstArchetype = srcArchetype->InstantiableArchetype;
var temp = stackalloc int[dstArchetype->NumSharedComponents];
if (RequiresBuildingResidueSharedComponentIndices(srcArchetype, dstArchetype))
{
BuildResidueSharedComponentIndices(srcArchetype, dstArchetype,
src.Chunk->SharedComponentValues, temp);
}
else
{
// Always copy shared component indices since GetChunkWithEmptySlots might reallocate the storage of SharedComponentValues
src.Chunk->SharedComponentValues.CopyTo(temp, 0, dstArchetype->NumSharedComponents);
}
SharedComponentValues sharedComponentValues = temp;
Chunk *chunk = null;
int instanceBeginIndex = 0;
while (instanceBeginIndex != instanceCount)
{
chunk = GetChunkWithEmptySlots(dstArchetype, sharedComponentValues,
entityComponentStore, managedComponentStore);
int indexInChunk;
var allocatedCount = AllocateIntoChunk(chunk, instanceCount - instanceBeginIndex, out indexInChunk,
entityComponentStore, managedComponentStore);
ChunkDataUtility.ReplicateComponents(src.Chunk, src.IndexInChunk, chunk, indexInChunk, allocatedCount);
entityComponentStore->AllocateEntities(dstArchetype, chunk, indexInChunk, allocatedCount,
outputEntities + instanceBeginIndex);
chunk->SetAllChangeVersions(entityComponentStore->GlobalSystemVersion);
#if UNITY_EDITOR
for (var i = 0; i < allocatedCount; ++i)
{
entityComponentStore->SetName(outputEntities[i + instanceBeginIndex], entityComponentStore->GetName(srcEntity));
}
#endif
if (remapChunks != null)
{
remapChunks[remapChunksCount].Chunk = chunk;
remapChunks[remapChunksCount].IndexInChunk = indexInChunk;
remapChunks[remapChunksCount].AllocatedCount = allocatedCount;
remapChunks[remapChunksCount].InstanceBeginIndex = instanceBeginIndex;
remapChunksCount++;
}
instanceBeginIndex += allocatedCount;
}
if (chunk != null)
{
managedComponentStore.IncrementComponentOrderVersion(dstArchetype, chunk->SharedComponentValues);
entityComponentStore->IncrementComponentTypeOrderVersion(dstArchetype);
}
return(remapChunksCount);
}
static void DestroyBatch(Entity *entities, Chunk *chunk, int indexInChunk, int batchCount,
EntityComponentStore *entityComponentStore,
ManagedComponentStore managedComponentStore)
{
var archetype = chunk->Archetype;
if (!archetype->SystemStateCleanupNeeded)
{
entityComponentStore->DeallocateDataEntitiesInChunk(entities, chunk, indexInChunk, batchCount);
managedComponentStore.IncrementComponentOrderVersion(archetype, chunk->SharedComponentValues);
entityComponentStore->IncrementComponentTypeOrderVersion(archetype);
if (chunk->ManagedArrayIndex >= 0)
{
// We can just chop-off the end, no need to copy anything
if (chunk->Count != indexInChunk + batchCount)
{
managedComponentStore.CopyManagedObjects(chunk, chunk->Count - batchCount, chunk,
indexInChunk, batchCount);
}
managedComponentStore.ClearManagedObjects(chunk, chunk->Count - batchCount,
batchCount);
}
chunk->Archetype->EntityCount -= batchCount;
SetChunkCount(chunk, chunk->Count - batchCount, entityComponentStore, managedComponentStore);
}
else
{
var newType = archetype->SystemStateResidueArchetype;
var sharedComponentValues = chunk->SharedComponentValues;
if (RequiresBuildingResidueSharedComponentIndices(archetype, newType))
{
var tempAlloc = stackalloc int[newType->NumSharedComponents];
BuildResidueSharedComponentIndices(archetype, newType, sharedComponentValues, tempAlloc);
sharedComponentValues = tempAlloc;
}
// See: https://github.com/Unity-Technologies/dots/issues/1387
// For Locked Order Chunks specfically, need to make sure that structural changes are always done per-chunk.
// If trying to muutate structure in a way that is not per chunk, will hit an exception in the else clause anyway.
// This ultimately needs to be replaced by entity batch interface.
if (batchCount == chunk->Count)
{
managedComponentStore.IncrementComponentOrderVersion(archetype, chunk->SharedComponentValues);
entityComponentStore->IncrementComponentTypeOrderVersion(archetype);
EntityManagerChangeArchetypeUtility.SetArchetype(chunk, newType, sharedComponentValues,
entityComponentStore, managedComponentStore);
}
else
{
for (var i = 0; i < batchCount; i++)
{
var entity = entities[i];
managedComponentStore.IncrementComponentOrderVersion(archetype,
entityComponentStore->GetChunk(entity)->SharedComponentValues);
entityComponentStore->IncrementComponentTypeOrderVersion(archetype);
EntityManagerChangeArchetypeUtility.SetArchetype(entity, newType, sharedComponentValues,
entityComponentStore, managedComponentStore);
}
}
}
}