public static void CopyComponentData(Chunk *source, Chunk *destination, int sourceIndex, int destinationIndex)
{
// TODO: I've no clue what this is about...
var types = source->archetype->componentTypes;
var count = source->archetype->componentCount;
var sizes = source->archetype->componentSizes;
var sourceOffsets = source->archetype->componentOffsets;
var destOffsets = destination->archetype->componentOffsets;
for (int i = 0; i < count; ++i)
{
int indexInChunk = ArchetypeUtility.GetTypeIndex(destination->archetype, types[i]);
if (indexInChunk == -1)
{
continue;
}
var offsetInSourceBuffer = source->buffer + sourceOffsets[i] + (sourceIndex * sizes[i]);
var offsetInDestBuffer = destination->buffer + destOffsets[indexInChunk] + (destinationIndex * sizes[i]);
Buffer.MemoryCopy(offsetInDestBuffer, offsetInSourceBuffer, (uint)sizes[indexInChunk], (uint)sizes[indexInChunk]);
// Unsafe.CopyBlock((void*)offsetInDestBuffer, (void*)offsetInSourceBuffer, (uint)sizes[indexInChunk]);
}
}
public static int CopyComponentData <T>(Chunk *chunk, int typeIndex, T *buffer, int count) where T : unmanaged
{
count = (count <= chunk->count) ? count : chunk->count;
var indexInArchetype = ArchetypeUtility.GetTypeIndex(chunk->archetype, typeIndex); // Make sure that the type is in the archetype beforehand...
var size = count * sizeof(T);
Buffer.MemoryCopy(ChunkUtility.GetComponentPtrInBuffer <T>(chunk, indexInArchetype), buffer, size, size);
return(count);
}
public static T *GetComponentDataPtr <T>(Chunk *chunk, int index, int typeIndex) where T : unmanaged
{
var indexInArchetype = ArchetypeUtility.GetTypeIndex(chunk->archetype, typeIndex);
if (indexInArchetype < 0)
{
return(null);
}
return(&GetComponentPtrInBuffer <T>(chunk, indexInArchetype)[index]);
}
public static Span <T> GetComponentData <T>(Chunk *chunk, int typeIndex) where T : unmanaged
{
var indexInArchetype = ArchetypeUtility.GetTypeIndex(chunk->archetype, typeIndex);
if (indexInArchetype < 0)
{
return(Span <T> .Empty);
}
return(new Span <T>(GetComponentPtrInBuffer <T>(chunk, indexInArchetype), chunk->count));
}
public bool HasComponentData <T>(Entity entity) where T : unmanaged, IComponentData
{
if (!IsAlive(entity))
{
return(false);
}
int typeIndex = TypeRegistry <T> .typeIndex;
return(ArchetypeUtility.GetTypeIndex(GetArchetypeInternal(entity), typeIndex) >= 0);
}
public static bool TryGetComponentData <T>(Chunk *chunk, int index, int typeIndex, out T value) where T : unmanaged
{
var indexInArchetype = ArchetypeUtility.GetTypeIndex(chunk->archetype, typeIndex);
if (indexInArchetype < 0)
{
value = default;
return(false);
}
value = GetComponentPtrInBuffer <T>(chunk, indexInArchetype)[index];
return(true);
}
public static bool SetComponentData <T>(Chunk *chunk, int index, int typeIndex, T value) where T : unmanaged
{
var indexInArchetype = ArchetypeUtility.GetTypeIndex(chunk->archetype, typeIndex);
if (indexInArchetype < 0)
{
return(false);
}
T *data = GetComponentPtrInBuffer <T>(chunk, indexInArchetype);
data[index] = value;
return(true);
}
internal EntityArchetype RemoveTypeFromArchetype <T>(Archetype *archetype) where T : unmanaged
{
// TODO: Needs a check if the archetypes contains typeof(T).
int srcCount = archetype->componentCount;
if (srcCount <= 1)
{
return(CreateArchetype());
}
int destCount = srcCount - 1;
Span <int> componentData = destCount > 16
? new int[destCount * 2]
: stackalloc int[destCount * 2];
var destTypes = componentData.Slice(0, destCount);
var destSizes = componentData.Slice(destCount);
var sourceTypes = new Span <int>(archetype->componentTypes, srcCount);
var sourceSizes = new Span <int>(archetype->componentSizes, srcCount);
int indexInArchetype = ArchetypeUtility.GetTypeIndex(archetype, TypeRegistry <T> .typeIndex);
// Is it somehow possible to remove the branches here?
if (indexInArchetype > 0)
{
sourceTypes.Slice(0, indexInArchetype).CopyTo(destTypes);
sourceSizes.Slice(0, indexInArchetype).CopyTo(destSizes);
}
if (indexInArchetype < destCount)
{
sourceTypes.Slice(indexInArchetype + 1).CopyTo(destTypes.Slice(indexInArchetype));
sourceSizes.Slice(indexInArchetype + 1).CopyTo(destSizes.Slice(indexInArchetype));
}
int blockSize = 0;
for (int i = 0; i < destSizes.Length; ++i) // TODO: Use CalculateBlockSize instead.
{
blockSize += destSizes[i];
}
return(CreateArchetypeInternal(destTypes, destSizes, blockSize));
}
public bool HasComponentData <T>() where T : unmanaged
{
int typeIndex = TypeRegistry <T> .typeIndex;
return(ArchetypeUtility.GetTypeIndex(this.chunk->archetype, typeIndex) != -1);
}