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filter.cpp
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filter.cpp
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#include "filter.h"
Filter* Filter::Create(Bittype bittype)
{
auto ids = ComponentManager::GetIds(bittype);
Filter* filter = new Filter();
filter->m_bittype = bittype;
filter->m_componentCount = ids.count;
filter->m_componentIDs = new uint16[ids.count];
for (uint16 i = 0; i < ids.count; ++i)
filter->m_componentIDs[i] = ids.ptr[i];
static std::vector<Archetype*> arhetypes;
ArchetypeManager::Filter(arhetypes, bittype);
for (auto const& arhetype : arhetypes)
filter->AddArchetype(arhetype);
return filter;
}
void Filter::AddArchetype(Archetype * archetype)
{
ArchetypeReference ar = ArchetypeReference();
ar.archetype = archetype;
ar.bittype = archetype->m_bitType;
ar.offsets = new size_t[m_componentCount];
archetype->GetOffsets(ar.offsets, m_componentIDs, m_componentCount);
m_archetypes.push_back(ar);
}
char* Filter::GetNextChunk(uint16 &archetypeNum, uint16 &chunkNum)
{
while (archetypeNum < m_archetypes.size())
{
auto ar = m_archetypes[archetypeNum];
char* chunk = ar.archetype->GetChunk(chunkNum);
if (chunk == nullptr)
{
++archetypeNum;
chunkNum = 0;
continue;
}
else
{
++chunkNum;
return chunk;
}
}
chunkNum = 0;
archetypeNum = 0;
return nullptr;
}
bool Filter::InitializeNextChunk(char ** firstCompPtr, uint16 & archetypeNum, uint16 & chunkNum)
{
char* chunk = GetNextChunk(archetypeNum, chunkNum);
if(!chunk) return false;
auto ar = m_archetypes[archetypeNum];
for (uint16 i = 0; i < m_componentCount; i++)
firstCompPtr[i] = chunk + ar.offsets[i];
return true;
}