private static unsafe Entity GetEntityFromEntityInChunk(EntityInChunk entityInChunk)
{
var chunk = entityInChunk.Chunk;
var archetype = chunk->Archetype;
var buffer = ChunkUtility.GetBuffer(chunk) + archetype->Offsets[0] + entityInChunk.IndexInChunk * archetype->SizeOfs[0];
return(*(Entity *)buffer);
}
public unsafe void Execute(int index)
{
var chunk = Chunks[index].m_Chunk;
var archetype = chunk->Archetype;
var entities = (Entity *)(ChunkUtility.GetBuffer(chunk) + archetype->Offsets[0]);
var componentTypeIndexInArchetype = ChunkDataUtility.GetIndexInTypeArray(archetype, ComponentTypeIndex);
var componentBuffer = (TComponentData *)(ChunkUtility.GetBuffer(chunk) + archetype->Offsets[componentTypeIndexInArchetype]);
for (var i = 0; i < chunk->Count; ++i)
{
ComponentDataToEntity.Add(componentBuffer[i], entities[i]);
}
}
public void Execute(int index)
{
var chunk = Chunks[index].m_Chunk;
var archetype = chunk->Archetype;
for (var typeIndexInArchetype = 0; typeIndexInArchetype < archetype->TypesCount; typeIndexInArchetype++)
{
var componentTypeInArchetype = archetype->Types[typeIndexInArchetype];
var typeInfo = TypeInfoStream.GetTypeInfo(componentTypeInArchetype.TypeIndex);
if (typeInfo.EntityOffsetCount == 0)
{
// This type has no entity references. Skip.
continue;
}
if (componentTypeInArchetype.IsSharedComponent || componentTypeInArchetype.IsZeroSized)
{
// @TODO Should we handle shared components with references? Is that a thing?
continue;
}
var typeInChunkPtr = ChunkUtility.GetBuffer(chunk) + archetype->Offsets[typeIndexInArchetype];
var typeSizeOf = archetype->SizeOfs[typeIndexInArchetype];
var changed = false;
for (var entityIndexInChunk = 0; entityIndexInChunk < Chunks[index].Count; entityIndexInChunk++)
{
var componentDataPtr = typeInChunkPtr + typeSizeOf * entityIndexInChunk;
if (componentTypeInArchetype.IsBuffer)
{
var bufferHeader = (BufferHeader *)componentDataPtr;
var bufferLength = bufferHeader->Length;
var bufferPtr = BufferHeader.GetElementPointer(bufferHeader);
changed |= SetMissingEntityReferencesToNullForComponent(typeInfo, bufferPtr, bufferLength);
}
else
{
changed |= SetMissingEntityReferencesToNullForComponent(typeInfo, componentDataPtr, 1);
}
}
if (changed)
{
chunk->SetChangeVersion(typeIndexInArchetype, GlobalSystemVersion);
}
}
}
public unsafe void Execute(int index)
{
var chunk = Chunks[index].m_Chunk;
var chunkChangeFlags = ChunkChangeFlags[index];
var baseIndex = Offsets[index];
var archetype = chunk->Archetype;
var componentIndexInArchetype = ChunkDataUtility.GetIndexInTypeArray(archetype, ComponentTypeIndex);
var componentBuffer = (TComponent *)(ChunkUtility.GetBuffer(chunk) + archetype->Offsets[componentIndexInArchetype]);
for (var i = 0; i < chunk->Count; ++i)
{
Entities[baseIndex + i] = new EntityInChunkWithComponent <TComponent>
{
EntityInChunk = new EntityInChunk {
Chunk = chunk, IndexInChunk = i
},
Component = componentBuffer[i],
ChunkChangeFlags = chunkChangeFlags
};
}
}
private void SetComponentData(
Chunk *afterChunk,
Archetype *afterArchetype,
ComponentTypeInArchetype afterTypeInArchetype,
int afterIndexInTypeArray,
int afterEntityIndexInChunk,
Chunk *beforeChunk,
Archetype *beforeArchetype,
int beforeIndexInTypeArray,
int beforeEntityIndexInChunk,
EntityGuid entityGuid,
int typeIndex,
TypeInfo typeInfo)
{
if (afterTypeInArchetype.IsSharedComponent)
{
var beforeOffset = beforeIndexInTypeArray - beforeChunk->Archetype->FirstSharedComponent;
var beforeSharedComponentIndex = beforeChunk->GetSharedComponentValue(beforeOffset);
var afterOffset = afterIndexInTypeArray - afterChunk->Archetype->FirstSharedComponent;
var afterSharedComponentIndex = afterChunk->GetSharedComponentValue(afterOffset);
// No managed objects in burst land. Do what we can and defer the actual unpacking until later.
ComponentDataStream.SetSharedComponentDataDeferred(entityGuid, afterTypeInArchetype.TypeIndex, afterSharedComponentIndex, beforeSharedComponentIndex);
return;
}
// IMPORTANT This means `IsZeroSizedInChunk` which is always true for shared components.
// Always check shared components first.
if (afterTypeInArchetype.IsZeroSized)
{
return;
}
if (afterTypeInArchetype.IsBuffer)
{
var beforeBuffer = (BufferHeader *)(ChunkUtility.GetBuffer(beforeChunk) + beforeArchetype->Offsets[beforeIndexInTypeArray] +
beforeEntityIndexInChunk * beforeArchetype->SizeOfs[beforeIndexInTypeArray]);
var beforeElementPtr = BufferHeader.GetElementPointer(beforeBuffer);
var beforeLength = beforeBuffer->Length;
var afterBuffer = (BufferHeader *)(ChunkUtility.GetBuffer(afterChunk) + afterArchetype->Offsets[afterIndexInTypeArray] +
afterEntityIndexInChunk * afterArchetype->SizeOfs[afterIndexInTypeArray]);
var afterElementPtr = BufferHeader.GetElementPointer(afterBuffer);
var afterLength = afterBuffer->Length;
if (afterTypeInArchetype.TypeIndex == TypeInfoStream.LinkedEntityGroupTypeIndex)
{
var beforeLinkedEntityGroups = (LinkedEntityGroup *)beforeElementPtr;
var afterLinkedEntityGroups = (LinkedEntityGroup *)afterElementPtr;
// Using is not supported by burst.
var beforeLinkedEntityGroupEntityGuids = new NativeArray <EntityGuid>(beforeLength, Allocator.Temp);
var afterLinkedEntityGroupEntityGuids = new NativeArray <EntityGuid>(afterLength, Allocator.Temp);
{
for (var i = 0; i < beforeLength; i++)
{
if (!BeforeEntityToEntityGuid.TryGetValue(beforeLinkedEntityGroups[i].Value, out var beforeEntityGuid))
{
throw new Exception("LinkedEntityGroup child is missing an EntityGuid component.");
}
beforeLinkedEntityGroupEntityGuids[i] = beforeEntityGuid;
}
for (var i = 0; i < afterLength; i++)
{
if (!AfterEntityToEntityGuid.TryGetValue(afterLinkedEntityGroups[i].Value, out var afterEntityGuid))
{
throw new Exception("LinkedEntityGroup child is missing an EntityGuid component.");
}
afterLinkedEntityGroupEntityGuids[i] = afterEntityGuid;
}
beforeLinkedEntityGroupEntityGuids.Sort();
afterLinkedEntityGroupEntityGuids.Sort();
var beforeIndex = 0;
var afterIndex = 0;
while (beforeIndex < beforeLength && afterIndex < afterLength)
{
var beforeEntityGuid = beforeLinkedEntityGroupEntityGuids[beforeIndex];
var afterEntityGuid = afterLinkedEntityGroupEntityGuids[afterIndex];
var comparison = beforeEntityGuid.CompareTo(afterEntityGuid);
if (comparison == 0)
{
// If the entity is in both "before" and "after", then there is no change.
beforeIndex++;
afterIndex++;
}
else if (comparison > 0)
{
// If the entity is in "before" but not "after", it's been removed.
LinkedEntityGroupRemovals.Add(new LinkedEntityGroupChange {
RootEntityGuid = entityGuid, ChildEntityGuid = beforeEntityGuid
});
beforeIndex++;
}
else if (comparison < 0)
{
// If the entity is in "after" but not "before", it's been added.
LinkedEntityGroupAdditions.Add(new LinkedEntityGroupChange {
RootEntityGuid = entityGuid, ChildEntityGuid = afterEntityGuid
});
afterIndex++;
}
}
while (beforeIndex < beforeLength)
{
// If the entity is in "before" but not "after", it's been removed.
LinkedEntityGroupRemovals.Add(new LinkedEntityGroupChange
{
RootEntityGuid = entityGuid, ChildEntityGuid = beforeLinkedEntityGroupEntityGuids[beforeIndex++]
});
}
while (afterIndex < afterLength)
{
// If the entity is in "after" but not "before", it's been added.
LinkedEntityGroupAdditions.Add(new LinkedEntityGroupChange
{
RootEntityGuid = entityGuid, ChildEntityGuid = afterLinkedEntityGroupEntityGuids[afterIndex++]
});
}
}
}
else
{
if (afterLength != beforeLength ||
UnsafeUtility.MemCmp(beforeElementPtr, afterElementPtr, afterLength * typeInfo.ElementSize) != 0)
{
var packedComponent = PackComponent(entityGuid, typeIndex, typeInfo.StableTypeHash);
ComponentDataStream.SetComponentData(packedComponent, afterElementPtr, typeInfo.ElementSize * afterLength);
ExtractEntityReferencePatches(typeInfo, packedComponent, afterElementPtr, afterLength);
}
}
}
else
{
if (beforeArchetype->SizeOfs[beforeIndexInTypeArray] != afterArchetype->SizeOfs[afterIndexInTypeArray])
{
throw new Exception("Archetype->SizeOfs do not match");
}
var beforeAddress = ChunkUtility.GetBuffer(beforeChunk) + beforeArchetype->Offsets[beforeIndexInTypeArray] +
beforeArchetype->SizeOfs[beforeIndexInTypeArray] * beforeEntityIndexInChunk;
var afterAddress = ChunkUtility.GetBuffer(afterChunk) + afterArchetype->Offsets[afterIndexInTypeArray] + afterArchetype->SizeOfs[afterIndexInTypeArray] * afterEntityIndexInChunk;
if (UnsafeUtility.MemCmp(beforeAddress, afterAddress, beforeArchetype->SizeOfs[beforeIndexInTypeArray]) != 0)
{
var packedComponent = PackComponent(entityGuid, typeIndex, typeInfo.StableTypeHash);
ComponentDataStream.SetComponentData(packedComponent, afterAddress, beforeArchetype->SizeOfs[beforeIndexInTypeArray]);
ExtractEntityReferencePatches(typeInfo, packedComponent, afterAddress, 1);
}
}
}
private void AddComponentData(
Chunk *afterChunk,
Archetype *afterArchetype,
ComponentTypeInArchetype afterTypeInArchetype,
int afterIndexInTypeArray,
int afterEntityIndexInChunk,
EntityGuid entityGuid,
int typeIndex,
TypeInfo typeInfo
)
{
var packedComponent = PackComponent(entityGuid, typeIndex, typeInfo.StableTypeHash);
AddComponents.Add(packedComponent);
if (afterTypeInArchetype.IsSharedComponent)
{
var offset = afterIndexInTypeArray - afterChunk->Archetype->FirstSharedComponent;
var sharedComponentIndex = afterChunk->GetSharedComponentValue(offset);
// No managed objects in burst land. Do what we can a defer the actual unpacking until later.
ComponentDataStream.SetSharedComponentDataDeferred(entityGuid, afterTypeInArchetype.TypeIndex, sharedComponentIndex);
return;
}
// IMPORTANT This means `IsZeroSizedInChunk` which is always true for shared components.
// Always check shared components first.
if (afterTypeInArchetype.IsZeroSized)
{
// Zero sized components have no data to copy.
return;
}
if (afterTypeInArchetype.IsBuffer)
{
var sizeOf = afterArchetype->SizeOfs[afterIndexInTypeArray];
var buffer = (BufferHeader *)(ChunkUtility.GetBuffer(afterChunk) + afterArchetype->Offsets[afterIndexInTypeArray] + afterEntityIndexInChunk * sizeOf);
var length = buffer->Length;
if (length == 0)
{
return;
}
var elementPtr = BufferHeader.GetElementPointer(buffer);
if (afterTypeInArchetype.TypeIndex == TypeInfoStream.LinkedEntityGroupTypeIndex)
{
// Magic in AddComponent already put a self-reference at the top of the buffer, so there's no need for us to add it.
// The rest of the elements should be interpreted as LinkedEntityGroupAdditions.
for (var elementIndex = 1; elementIndex < length; elementIndex++)
{
var childEntity = ((Entity *)elementPtr)[elementIndex];
if (!AfterEntityToEntityGuid.TryGetValue(childEntity, out var childEntityGuid))
{
// If the child entity doesn't have a guid, there's no way for us to communicate its identity to the destination world.
throw new Exception("LinkedEntityGroup child is missing an EntityGuid component.");
}
LinkedEntityGroupAdditions.Add(new LinkedEntityGroupChange
{
RootEntityGuid = entityGuid,
ChildEntityGuid = childEntityGuid
});
}
}
else
{
ComponentDataStream.SetComponentData(packedComponent, elementPtr, typeInfo.ElementSize * length);
ExtractEntityReferencePatches(typeInfo, packedComponent, elementPtr, length);
}
}
else
{
var sizeOf = afterArchetype->SizeOfs[afterIndexInTypeArray];
var ptr = ChunkUtility.GetBuffer(afterChunk) + afterArchetype->Offsets[afterIndexInTypeArray] + afterEntityIndexInChunk * sizeOf;
ComponentDataStream.SetComponentData(packedComponent, ptr, sizeOf);
ExtractEntityReferencePatches(typeInfo, packedComponent, ptr, 1);
}
}