/// <summary>
/// Fix-up the chunk to refer to a different (but layout compatible) archetype.
/// - Should only be called by Move(chunk)
/// </summary>
void ChangeArchetypeInPlace(Chunk *srcChunk, ref ArchetypeChunkFilter dstArchetypeChunkFilter)
{
var dstArchetype = dstArchetypeChunkFilter.Archetype;
fixed(int *sharedComponentValues = dstArchetypeChunkFilter.SharedComponentValues)
{
var srcArchetype = srcChunk->Archetype;
ChunkDataUtility.AssertAreLayoutCompatible(srcArchetype, dstArchetype);
var fixupSharedComponentReferences = (srcArchetype->NumSharedComponents > 0) || (dstArchetype->NumSharedComponents > 0);
if (fixupSharedComponentReferences)
{
int srcFirstShared = srcArchetype->FirstSharedComponent;
int dstFirstShared = dstArchetype->FirstSharedComponent;
int srcCount = srcArchetype->NumSharedComponents;
int dstCount = dstArchetype->NumSharedComponents;
int o = 0;
int n = 0;
for (; n < dstCount && o < srcCount;)
{
int srcType = srcArchetype->Types[o + srcFirstShared].TypeIndex;
int dstType = dstArchetype->Types[n + dstFirstShared].TypeIndex;
if (srcType == dstType)
{
var srcSharedComponentDataIndex = srcChunk->SharedComponentValues[o];
var dstSharedComponentDataIndex = sharedComponentValues[n];
if (srcSharedComponentDataIndex != dstSharedComponentDataIndex)
{
ManagedChangesTracker.RemoveReference(srcSharedComponentDataIndex);
ManagedChangesTracker.AddReference(dstSharedComponentDataIndex);
}
n++;
o++;
}
else if (dstType > srcType) // removed from dstArchetype
{
var sharedComponentDataIndex = srcChunk->SharedComponentValues[o];
ManagedChangesTracker.RemoveReference(sharedComponentDataIndex);
o++;
}
else // added to dstArchetype
{
var sharedComponentDataIndex = sharedComponentValues[n];
ManagedChangesTracker.AddReference(sharedComponentDataIndex);
n++;
}
}
for (; n < dstCount; n++) // added to dstArchetype
{
var sharedComponentDataIndex = sharedComponentValues[n];
ManagedChangesTracker.AddReference(sharedComponentDataIndex);
}
for (; o < srcCount; o++) // removed from dstArchetype
{
var sharedComponentDataIndex = srcChunk->SharedComponentValues[o];
ManagedChangesTracker.RemoveReference(sharedComponentDataIndex);
}
}
var fixupManagedComponents = (srcArchetype->NumManagedArrays > 0) || (dstArchetype->NumManagedArrays > 0);
if (fixupManagedComponents)
{
if (dstArchetype->NumManagedArrays == 0) // removed all
{
ManagedChangesTracker.DeallocateManagedArrayStorage(srcChunk->ManagedArrayIndex);
m_ManagedArrayFreeIndex.Add(srcChunk->ManagedArrayIndex);
srcChunk->ManagedArrayIndex = -1;
}
else
{
// We have changed the managed array order + size so allocate a new managed array
// copy the unchanged values into it
int dstManagedArrayIndex;
if (!m_ManagedArrayFreeIndex.IsEmpty)
{
dstManagedArrayIndex = m_ManagedArrayFreeIndex.Pop <int>();
}
else
{
dstManagedArrayIndex = m_ManagedArrayIndex;
m_ManagedArrayIndex++;
}
ManagedChangesTracker.AllocateManagedArrayStorage(dstManagedArrayIndex, dstArchetype->NumManagedArrays * srcChunk->Capacity);
int srcManagedArrayIndex = srcChunk->ManagedArrayIndex;
srcChunk->ManagedArrayIndex = dstManagedArrayIndex;
if (srcManagedArrayIndex != -1)
{
ManagedChangesTracker.MoveChunksManagedObjects(srcArchetype, srcManagedArrayIndex, dstArchetype, dstManagedArrayIndex, srcChunk->Capacity, srcChunk->Count);
ManagedChangesTracker.DeallocateManagedArrayStorage(srcManagedArrayIndex);
m_ManagedArrayFreeIndex.Add(srcManagedArrayIndex);
}
}
}
var count = srcChunk->Count;
bool hasEmptySlots = count < srcChunk->Capacity;
if (hasEmptySlots)
{
srcArchetype->EmptySlotTrackingRemoveChunk(srcChunk);
}
int chunkIndexInSrcArchetype = srcChunk->ListIndex;
var dstTypes = dstArchetype->Types;
var srcTypes = srcArchetype->Types;
//Change version is overriden below
dstArchetype->AddToChunkList(srcChunk, sharedComponentValues, 0);
int chunkIndexInDstArchetype = srcChunk->ListIndex;
//Copy change versions from src to dst archetype
for (int isrcType = srcArchetype->TypesCount - 1, idstType = dstArchetype->TypesCount - 1;
idstType >= 0;
--idstType)
{
var dstType = dstTypes[idstType];
while (srcTypes[isrcType] > dstType)
{
--isrcType;
}
var version = srcTypes[isrcType] == dstType
? srcArchetype->Chunks.GetChangeVersion(isrcType, chunkIndexInSrcArchetype)
: GlobalSystemVersion;
dstArchetype->Chunks.SetChangeVersion(idstType, chunkIndexInDstArchetype, version);
}
srcChunk->ListIndex = chunkIndexInSrcArchetype;
srcArchetype->RemoveFromChunkList(srcChunk);
srcChunk->ListIndex = chunkIndexInDstArchetype;
if (hasEmptySlots)
{
dstArchetype->EmptySlotTrackingAddChunk(srcChunk);
}
SetArchetype(srcChunk, dstArchetype);
srcArchetype->EntityCount -= count;
dstArchetype->EntityCount += count;
if (srcArchetype->MetaChunkArchetype != dstArchetype->MetaChunkArchetype)
{
if (srcArchetype->MetaChunkArchetype == null)
{
CreateMetaEntityForChunk(srcChunk);
}
else if (dstArchetype->MetaChunkArchetype == null)
{
DestroyMetaChunkEntity(srcChunk->metaChunkEntity);
srcChunk->metaChunkEntity = Entity.Null;
}
else
{
var metaChunk = GetChunk(srcChunk->metaChunkEntity);
var archetypeChunkFilter = new ArchetypeChunkFilter(dstArchetype->MetaChunkArchetype, metaChunk->SharedComponentValues);
Move(srcChunk->metaChunkEntity, ref archetypeChunkFilter);
}
}
}
}