Implement protocol level chunk sparsing (#3864)
This commit is contained in:
peterbell10
Alexander Harkness
parent
ad3192d696
commit
096cdac80d
@ -27,16 +27,23 @@ template <typename T> inline bool IsAllValue(const T * a_Array, size_t a_NumElem
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cChunkData::cChunkData(cAllocationPool<cChunkData::sChunkSection> & a_Pool) :
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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m_IsOwner(true),
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#endif
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cChunkData::cChunkData(cAllocationPool<cChunkData::sChunkSection> & a_Pool):
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m_Sections(),
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m_Pool(a_Pool)
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{
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}
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cChunkData::cChunkData(cChunkData && a_Other):
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m_Pool(a_Other.m_Pool)
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{
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for (size_t i = 0; i < NumSections; i++)
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{
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m_Sections[i] = nullptr;
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m_Sections[i] = a_Other.m_Sections[i];
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a_Other.m_Sections[i] = nullptr;
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}
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}
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@ -46,17 +53,29 @@ cChunkData::cChunkData(cAllocationPool<cChunkData::sChunkSection> & a_Pool) :
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cChunkData::~cChunkData()
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{
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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if (!m_IsOwner)
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{
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return;
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}
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#endif
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for (size_t i = 0; i < NumSections; i++)
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Clear();
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}
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void cChunkData::Assign(const cChunkData & a_Other)
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{
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// If assigning to self, no-op
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if (&a_Other == this)
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{
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Free(m_Sections[i]);
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m_Sections[i] = nullptr;
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return;
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}
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Clear();
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for (size_t i = 0; i < NumSections; ++i)
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{
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if (a_Other.m_Sections[i] != nullptr)
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{
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m_Sections[i] = Allocate();
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*m_Sections[i] = *a_Other.m_Sections[i];
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}
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}
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}
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@ -64,85 +83,28 @@ cChunkData::~cChunkData()
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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cChunkData::cChunkData(const cChunkData & a_Other) :
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m_IsOwner(true),
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m_Pool(a_Other.m_Pool)
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void cChunkData::Assign(cChunkData && a_Other)
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{
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if (&a_Other == this)
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{
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// Move contents and ownership from a_Other to this, pointer-wise:
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for (size_t i = 0; i < NumSections; i++)
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{
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m_Sections[i] = a_Other.m_Sections[i];
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}
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a_Other.m_IsOwner = false;
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return;
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}
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cChunkData & cChunkData::operator =(const cChunkData & a_Other)
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if (&m_Pool != &a_Other.m_Pool)
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{
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// If assigning to self, no-op
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if (&a_Other == this)
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{
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return *this;
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}
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// Free any currently held contents:
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if (m_IsOwner)
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{
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for (size_t i = 0; i < NumSections; i++)
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{
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Free(m_Sections[i]);
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m_Sections[i] = nullptr;
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}
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}
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// Move contents and ownership from a_Other to this, pointer-wise:
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m_IsOwner = true;
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for (size_t i = 0; i < NumSections; i++)
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{
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m_Sections[i] = a_Other.m_Sections[i];
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}
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a_Other.m_IsOwner = false;
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ASSERT(&m_Pool == &a_Other.m_Pool);
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return *this;
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// Cannot transfer the memory, do a copy instead
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const cChunkData & CopyOther = a_Other;
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Assign(CopyOther);
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return;
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}
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#else
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// unique_ptr style interface for memory management
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cChunkData::cChunkData(cChunkData && other) :
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m_Pool(other.m_Pool)
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Clear();
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for (size_t i = 0; i < NumSections; i++)
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{
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for (size_t i = 0; i < NumSections; i++)
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{
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m_Sections[i] = other.m_Sections[i];
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other.m_Sections[i] = nullptr;
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}
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m_Sections[i] = a_Other.m_Sections[i];
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a_Other.m_Sections[i] = nullptr;
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}
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cChunkData & cChunkData::operator =(cChunkData && other)
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{
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if (&other != this)
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{
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ASSERT(&m_Pool == &other.m_Pool);
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for (size_t i = 0; i < NumSections; i++)
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{
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Free(m_Sections[i]);
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m_Sections[i] = other.m_Sections[i];
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other.m_Sections[i] = nullptr;
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}
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}
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return *this;
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}
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#endif
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}
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@ -325,18 +287,45 @@ NIBBLETYPE cChunkData::GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const
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cChunkData cChunkData::Copy(void) const
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const cChunkData::sChunkSection * cChunkData::GetSection(size_t a_SectionNum) const
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{
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cChunkData copy(m_Pool);
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for (size_t i = 0; i < NumSections; i++)
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if (a_SectionNum < NumSections)
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{
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return m_Sections[a_SectionNum];
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}
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ASSERT(!"cChunkData::GetSection: section index out of range");
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return nullptr;
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}
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UInt16 cChunkData::GetSectionBitmask() const
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{
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static_assert(NumSections <= 16U, "cChunkData::GetSectionBitmask needs a bigger data type");
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UInt16 Res = 0U;
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for (size_t i = 0U; i < NumSections; ++i)
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{
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Res |= ((m_Sections[i] != nullptr) << i);
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}
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return Res;
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}
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void cChunkData::Clear()
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{
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for (size_t i = 0; i < NumSections; ++i)
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{
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if (m_Sections[i] != nullptr)
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{
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copy.m_Sections[i] = copy.Allocate();
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*copy.m_Sections[i] = *m_Sections[i];
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Free(m_Sections[i]);
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m_Sections[i] = nullptr;
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}
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}
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return copy;
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}
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@ -569,6 +558,23 @@ void cChunkData::SetSkyLight(const NIBBLETYPE * a_Src)
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UInt32 cChunkData::NumPresentSections() const
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{
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UInt32 Ret = 0U;
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for (size_t i = 0; i < NumSections; i++)
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{
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if (m_Sections[i] != nullptr)
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{
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++Ret;
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}
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}
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return Ret;
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}
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cChunkData::sChunkSection * cChunkData::Allocate(void)
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{
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return m_Pool.Allocate();
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@ -16,36 +16,37 @@
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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#else
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// unique_ptr style interface for memory management
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#endif
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class cChunkData
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{
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private:
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public:
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static const int SectionHeight = 16;
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static const size_t NumSections = (cChunkDef::Height / SectionHeight);
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static const size_t SectionBlockCount = SectionHeight * cChunkDef::Width * cChunkDef::Width;
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public:
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struct sChunkSection
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{
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BLOCKTYPE m_BlockTypes[SectionBlockCount];
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NIBBLETYPE m_BlockMetas[SectionBlockCount / 2];
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NIBBLETYPE m_BlockLight[SectionBlockCount / 2];
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NIBBLETYPE m_BlockSkyLight[SectionBlockCount / 2];
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};
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struct sChunkSection;
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cChunkData(cAllocationPool<cChunkData::sChunkSection> & a_Pool);
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cChunkData(cAllocationPool<sChunkSection> & a_Pool);
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cChunkData(cChunkData && a_Other);
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~cChunkData();
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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cChunkData(const cChunkData & a_Other);
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cChunkData & operator =(const cChunkData & a_Other);
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#else
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// unique_ptr style interface for memory management
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cChunkData(cChunkData && a_Other);
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cChunkData & operator =(cChunkData && a_ther);
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#endif
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cChunkData & operator = (cChunkData && a_Other)
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{
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Assign(std::move(a_Other));
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return *this;
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}
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/** Copy assign from another cChunkData */
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void Assign(const cChunkData & a_Other);
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/** Move assign from another cChunkData */
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void Assign(cChunkData && a_Other);
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BLOCKTYPE GetBlock(int a_X, int a_Y, int a_Z) const;
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void SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block);
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@ -57,8 +58,14 @@ public:
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NIBBLETYPE GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const;
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/** Creates a (deep) copy of self. */
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cChunkData Copy(void) const;
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/** Return a pointer to the chunk section or nullptr if all air */
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const sChunkSection * GetSection(size_t a_SectionNum) const;
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/** Returns a bitmask of chunk sections which are currently stored. */
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UInt16 GetSectionBitmask() const;
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/** Clears all data */
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void Clear();
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/** Copies the blocktype data into the specified flat array.
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Optionally, only a part of the data is copied, as specified by the a_Idx and a_Length parameters. */
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@ -93,23 +100,14 @@ public:
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Allows a_Src to be nullptr, in which case it doesn't do anything. */
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void SetSkyLight(const NIBBLETYPE * a_Src);
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struct sChunkSection
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{
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BLOCKTYPE m_BlockTypes [SectionHeight * 16 * 16] ;
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NIBBLETYPE m_BlockMetas [SectionHeight * 16 * 16 / 2];
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NIBBLETYPE m_BlockLight [SectionHeight * 16 * 16 / 2];
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NIBBLETYPE m_BlockSkyLight[SectionHeight * 16 * 16 / 2];
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};
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/** Returns the number of sections present (i.e. non-air). */
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UInt32 NumPresentSections() const;
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private:
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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mutable bool m_IsOwner;
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#endif
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sChunkSection * m_Sections[NumSections];
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cAllocationPool<cChunkData::sChunkSection> & m_Pool;
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cAllocationPool<sChunkSection> & m_Pool;
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/** Allocates a new section. Entry-point to custom allocators. */
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sChunkSection * Allocate(void);
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@ -101,3 +101,37 @@ protected:
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/** A simple implementation of the cChunkDataCallback interface that just copies the cChunkData */
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class cChunkDataCopyCollector :
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public cChunkDataCallback
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{
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public:
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struct MemCallbacks:
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cAllocationPool<cChunkData::sChunkSection>::cStarvationCallbacks
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{
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virtual void OnStartUsingReserve() override {}
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virtual void OnEndUsingReserve() override {}
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virtual void OnOutOfReserve() override {}
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};
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cChunkDataCopyCollector():
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m_Pool(cpp14::make_unique<MemCallbacks>()),
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m_Data(m_Pool)
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{
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}
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cListAllocationPool<cChunkData::sChunkSection, cChunkData::NumSections> m_Pool; // Keep 1 chunk worth of reserve
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cChunkData m_Data;
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protected:
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virtual void ChunkData(const cChunkData & a_ChunkBuffer) override
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{
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m_Data.Assign(a_ChunkBuffer);
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}
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};
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@ -257,7 +257,7 @@ void cChunkSender::SendChunk(int a_ChunkX, int a_ChunkZ, std::unordered_set<cCli
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{
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return;
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}
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cChunkDataSerializer Data(m_BlockTypes, m_BlockMetas, m_BlockLight, m_BlockSkyLight, m_BiomeMap, m_World.GetDimension());
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cChunkDataSerializer Data(m_Data, m_BiomeMap, m_World.GetDimension());
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for (const auto client : a_Clients)
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{
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@ -271,6 +271,7 @@ void cChunkSender::SendChunk(int a_ChunkX, int a_ChunkZ, std::unordered_set<cCli
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} // for itr - m_Packets[]
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}
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m_Data.Clear();
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m_BlockEntities.clear();
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// TODO: Send entity spawn packets
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@ -51,7 +51,7 @@ class cChunkSender;
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class cChunkSender:
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public cIsThread,
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public cChunkDataSeparateCollector
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public cChunkDataCopyCollector
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{
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typedef cIsThread super;
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public:
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@ -15,18 +15,34 @@
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/** Calls the given function with every present chunk section. */
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template <class Func>
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void ForEachSection(const cChunkData & a_Data, Func a_Func)
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{
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for (size_t SectionIdx = 0; SectionIdx < cChunkData::NumSections; ++SectionIdx)
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{
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auto Section = a_Data.GetSection(SectionIdx);
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if (Section != nullptr)
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{
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a_Func(*Section);
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// cChunkDataSerializer:
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cChunkDataSerializer::cChunkDataSerializer(
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const cChunkDef::BlockTypes & a_BlockTypes,
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const cChunkDef::BlockNibbles & a_BlockMetas,
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const cChunkDef::BlockNibbles & a_BlockLight,
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const cChunkDef::BlockNibbles & a_BlockSkyLight,
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const unsigned char * a_BiomeData,
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const eDimension a_Dimension
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) :
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m_BlockTypes(a_BlockTypes),
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m_BlockMetas(a_BlockMetas),
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m_BlockLight(a_BlockLight),
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m_BlockSkyLight(a_BlockSkyLight),
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const cChunkData & a_Data,
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const unsigned char * a_BiomeData,
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const eDimension a_Dimension
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):
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m_Data(a_Data),
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m_BiomeData(a_BiomeData),
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m_Dimension(a_Dimension)
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{
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@ -35,6 +51,7 @@ cChunkDataSerializer::cChunkDataSerializer(
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const AString & cChunkDataSerializer::Serialize(int a_Version, int a_ChunkX, int a_ChunkZ)
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{
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Serializations::const_iterator itr = m_Serializations.find(a_Version);
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@ -68,6 +85,7 @@ const AString & cChunkDataSerializer::Serialize(int a_Version, int a_ChunkX, int
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void cChunkDataSerializer::Serialize47(AString & a_Data, int a_ChunkX, int a_ChunkZ)
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{
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// This function returns the fully compressed packet (including packet size), not the raw packet!
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@ -77,32 +95,49 @@ void cChunkDataSerializer::Serialize47(AString & a_Data, int a_ChunkX, int a_Chu
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Packet.WriteVarInt32(0x21); // Packet id (Chunk Data packet)
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Packet.WriteBEInt32(a_ChunkX);
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Packet.WriteBEInt32(a_ChunkZ);
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Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
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Packet.WriteBEUInt16(0xffff); // We're aways sending the full chunk with no additional data, so the bitmap is 0xffff
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Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
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Packet.WriteBEUInt16(m_Data.GetSectionBitmask());
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// Write the chunk size:
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const int BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
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UInt32 ChunkSize = (
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(cChunkDef::NumBlocks * 2) + // Block meta + type
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sizeof(m_BlockLight) + // Block light
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sizeof(m_BlockSkyLight) + // Block sky light
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BiomeDataSize // Biome data
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m_Data.NumPresentSections() * cChunkData::SectionBlockCount * 3 + // Blocks and lighting
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BiomeDataSize // Biome data
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);
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Packet.WriteVarInt32(ChunkSize);
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// Write the block types to the packet:
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for (size_t Index = 0; Index < cChunkDef::NumBlocks; Index++)
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{
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BLOCKTYPE BlockType = m_BlockTypes[Index] & 0xFF;
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NIBBLETYPE BlockMeta = m_BlockMetas[Index / 2] >> ((Index & 1) * 4) & 0x0f;
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Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType << 4) | BlockMeta);
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Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType >> 4));
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}
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// Chunk written as seperate arrays of (blocktype + meta), blocklight and skylight
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// each array stores all present sections of the same kind packed together
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// Write the rest:
|
||||
Packet.WriteBuf(m_BlockLight, sizeof(m_BlockLight));
|
||||
Packet.WriteBuf(m_BlockSkyLight, sizeof(m_BlockSkyLight));
|
||||
Packet.WriteBuf(m_BiomeData, BiomeDataSize);
|
||||
// Write the block types to the packet:
|
||||
ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
|
||||
{
|
||||
for (size_t BlockIdx = 0; BlockIdx != cChunkData::SectionBlockCount; ++BlockIdx)
|
||||
{
|
||||
BLOCKTYPE BlockType = a_Section.m_BlockTypes[BlockIdx] & 0xFF;
|
||||
NIBBLETYPE BlockMeta = a_Section.m_BlockMetas[BlockIdx / 2] >> ((BlockIdx & 1) * 4) & 0x0f;
|
||||
Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType << 4) | BlockMeta);
|
||||
Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType >> 4));
|
||||
}
|
||||
}
|
||||
);
|
||||
|
||||
// Write the block lights:
|
||||
ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
|
||||
{
|
||||
Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
|
||||
}
|
||||
);
|
||||
|
||||
// Write the sky lights:
|
||||
ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
|
||||
{
|
||||
Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
|
||||
}
|
||||
);
|
||||
|
||||
// Write the biome data:
|
||||
Packet.WriteBuf(m_BiomeData, BiomeDataSize);
|
||||
|
||||
AString PacketData;
|
||||
Packet.ReadAll(PacketData);
|
||||
@ -147,102 +182,92 @@ void cChunkDataSerializer::Serialize107(AString & a_Data, int a_ChunkX, int a_Ch
|
||||
Packet.WriteBEInt32(a_ChunkX);
|
||||
Packet.WriteBEInt32(a_ChunkZ);
|
||||
Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
|
||||
Packet.WriteVarInt32(0x0000ffff); // We're aways sending the full chunk with no additional data, so the bitmap is 0xffff
|
||||
Packet.WriteVarInt32(m_Data.GetSectionBitmask());
|
||||
// Write the chunk size:
|
||||
const size_t NumChunkSections = 16;
|
||||
const size_t ChunkSectionBlocks = 16 * 16 * 16;
|
||||
const size_t BitsPerEntry = 13;
|
||||
const size_t Mask = (1 << BitsPerEntry) - 1; // Creates a mask that is 13 bits long, ie 0b1111111111111
|
||||
const size_t ChunkSectionDataArraySize = (ChunkSectionBlocks * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
|
||||
const size_t ChunkSectionDataArraySize = (cChunkData::SectionBlockCount * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
|
||||
size_t ChunkSectionSize = (
|
||||
1 + // Bits per block - set to 13, so the global palette is used and the palette has a length of 0
|
||||
1 + // Palette length
|
||||
2 + // Data array length VarInt - 2 bytes for the current value
|
||||
ChunkSectionDataArraySize * 8 + // Actual block data - multiplied by 8 because first number is longs
|
||||
sizeof(m_BlockLight) / NumChunkSections // Block light
|
||||
1 + // Bits per block - set to 13, so the global palette is used and the palette has a length of 0
|
||||
1 + // Palette length
|
||||
2 + // Data array length VarInt - 2 bytes for the current value
|
||||
ChunkSectionDataArraySize * 8 + // Actual block data - multiplied by 8 because first number is longs
|
||||
cChunkData::SectionBlockCount / 2 // Block light
|
||||
);
|
||||
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
// Sky light is only sent in the overworld.
|
||||
ChunkSectionSize += sizeof(m_BlockSkyLight) / NumChunkSections;
|
||||
ChunkSectionSize += cChunkData::SectionBlockCount / 2;
|
||||
}
|
||||
|
||||
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
|
||||
size_t ChunkSize = (
|
||||
ChunkSectionSize * 16 +
|
||||
ChunkSectionSize * m_Data.NumPresentSections() +
|
||||
BiomeDataSize
|
||||
);
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
|
||||
|
||||
// Write each chunk section...
|
||||
for (size_t SectionIndex = 0; SectionIndex < 16; SectionIndex++)
|
||||
{
|
||||
Packet.WriteBEUInt8(BitsPerEntry);
|
||||
Packet.WriteVarInt32(0); // Palette length is 0
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
|
||||
|
||||
size_t StartIndex = SectionIndex * ChunkSectionBlocks;
|
||||
|
||||
UInt64 TempLong = 0; // Temporary value that will be stored into
|
||||
UInt64 CurrentlyWrittenIndex = 0; // "Index" of the long that would be written to
|
||||
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks; Index++)
|
||||
ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
|
||||
{
|
||||
UInt64 Value = static_cast<UInt64>(m_BlockTypes[StartIndex + Index] << 4);
|
||||
if (Index % 2 == 0)
|
||||
Packet.WriteBEUInt8(BitsPerEntry);
|
||||
Packet.WriteVarInt32(0); // Palette length is 0
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
|
||||
|
||||
UInt64 TempLong = 0; // Temporary value that will be stored into
|
||||
UInt64 CurrentlyWrittenIndex = 0; // "Index" of the long that would be written to
|
||||
|
||||
for (size_t Index = 0; Index < cChunkData::SectionBlockCount; Index++)
|
||||
{
|
||||
Value |= m_BlockMetas[(StartIndex + Index) / 2] & 0x0f;
|
||||
UInt64 Value = static_cast<UInt64>(a_Section.m_BlockTypes[Index] << 4);
|
||||
if (Index % 2 == 0)
|
||||
{
|
||||
Value |= a_Section.m_BlockMetas[Index / 2] & 0x0f;
|
||||
}
|
||||
else
|
||||
{
|
||||
Value |= a_Section.m_BlockMetas[Index / 2] >> 4;
|
||||
}
|
||||
Value &= Mask; // It shouldn't go out of bounds, but it's still worth being careful
|
||||
|
||||
// Painful part where we write data into the long array. Based off of the normal code.
|
||||
size_t BitPosition = Index * BitsPerEntry;
|
||||
size_t FirstIndex = BitPosition / 64;
|
||||
size_t SecondIndex = ((Index + 1) * BitsPerEntry - 1) / 64;
|
||||
size_t BitOffset = BitPosition % 64;
|
||||
|
||||
if (FirstIndex != CurrentlyWrittenIndex)
|
||||
{
|
||||
// Write the current data before modifiying it.
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
TempLong = 0;
|
||||
CurrentlyWrittenIndex = FirstIndex;
|
||||
}
|
||||
|
||||
TempLong |= (Value << BitOffset);
|
||||
|
||||
if (FirstIndex != SecondIndex)
|
||||
{
|
||||
// Part of the data is now in the second long; write the first one first
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
CurrentlyWrittenIndex = SecondIndex;
|
||||
|
||||
TempLong = (Value >> (64 - BitOffset));
|
||||
}
|
||||
}
|
||||
else
|
||||
// The last long will generally not be written
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
|
||||
// Write lighting:
|
||||
Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
Value |= m_BlockMetas[(StartIndex + Index) / 2] >> 4;
|
||||
}
|
||||
Value &= Mask; // It shouldn't go out of bounds, but it's still worth being careful
|
||||
|
||||
// Painful part where we write data into the long array. Based off of the normal code.
|
||||
size_t BitPosition = Index * BitsPerEntry;
|
||||
size_t FirstIndex = BitPosition / 64;
|
||||
size_t SecondIndex = ((Index + 1) * BitsPerEntry - 1) / 64;
|
||||
size_t BitOffset = BitPosition % 64;
|
||||
|
||||
if (FirstIndex != CurrentlyWrittenIndex)
|
||||
{
|
||||
// Write the current data before modifiying it.
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
TempLong = 0;
|
||||
CurrentlyWrittenIndex = FirstIndex;
|
||||
}
|
||||
|
||||
TempLong |= (Value << BitOffset);
|
||||
|
||||
if (FirstIndex != SecondIndex)
|
||||
{
|
||||
// Part of the data is now in the second long; write the first one first
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
CurrentlyWrittenIndex = SecondIndex;
|
||||
|
||||
TempLong = (Value >> (64 - BitOffset));
|
||||
// Skylight is only sent in the overworld; the nether and end do not use it
|
||||
Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
|
||||
}
|
||||
}
|
||||
// The last long will generally not be written
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
|
||||
// Light - stored as a nibble, so we need half sizes
|
||||
// As far as I know, there isn't a method to only write a range of the array
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks / 2; Index++)
|
||||
{
|
||||
Packet.WriteBEUInt8(m_BlockLight[(StartIndex / 2) + Index]);
|
||||
}
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
// Skylight is only sent in the overworld; the nether and end do not use it
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks / 2; Index++)
|
||||
{
|
||||
Packet.WriteBEUInt8(m_BlockSkyLight[(StartIndex / 2) + Index]);
|
||||
}
|
||||
}
|
||||
}
|
||||
);
|
||||
|
||||
// Write the biome data
|
||||
Packet.WriteBuf(m_BiomeData, BiomeDataSize);
|
||||
@ -290,102 +315,92 @@ void cChunkDataSerializer::Serialize110(AString & a_Data, int a_ChunkX, int a_Ch
|
||||
Packet.WriteBEInt32(a_ChunkX);
|
||||
Packet.WriteBEInt32(a_ChunkZ);
|
||||
Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
|
||||
Packet.WriteVarInt32(0x0000ffff); // We're aways sending the full chunk with no additional data, so the bitmap is 0xffff
|
||||
Packet.WriteVarInt32(m_Data.GetSectionBitmask());
|
||||
// Write the chunk size:
|
||||
const size_t NumChunkSections = 16;
|
||||
const size_t ChunkSectionBlocks = 16 * 16 * 16;
|
||||
const size_t BitsPerEntry = 13;
|
||||
const size_t Mask = (1 << BitsPerEntry) - 1; // Creates a mask that is 13 bits long, ie 0b1111111111111
|
||||
const size_t ChunkSectionDataArraySize = (ChunkSectionBlocks * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
|
||||
const size_t ChunkSectionDataArraySize = (cChunkData::SectionBlockCount * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
|
||||
size_t ChunkSectionSize = (
|
||||
1 + // Bits per block - set to 13, so the global palette is used and the palette has a length of 0
|
||||
1 + // Palette length
|
||||
2 + // Data array length VarInt - 2 bytes for the current value
|
||||
ChunkSectionDataArraySize * 8 + // Actual block data - multiplied by 8 because first number is longs
|
||||
sizeof(m_BlockLight) / NumChunkSections // Block light
|
||||
1 + // Bits per block - set to 13, so the global palette is used and the palette has a length of 0
|
||||
1 + // Palette length
|
||||
2 + // Data array length VarInt - 2 bytes for the current value
|
||||
ChunkSectionDataArraySize * 8 + // Actual block data - multiplied by 8 because first number is longs
|
||||
cChunkData::SectionBlockCount / 2 // Block light
|
||||
);
|
||||
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
// Sky light is only sent in the overworld.
|
||||
ChunkSectionSize += sizeof(m_BlockSkyLight) / NumChunkSections;
|
||||
ChunkSectionSize += cChunkData::SectionBlockCount / 2;
|
||||
}
|
||||
|
||||
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
|
||||
size_t ChunkSize = (
|
||||
ChunkSectionSize * 16 +
|
||||
ChunkSectionSize * m_Data.NumPresentSections() +
|
||||
BiomeDataSize
|
||||
);
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
|
||||
|
||||
// Write each chunk section...
|
||||
for (size_t SectionIndex = 0; SectionIndex < 16; SectionIndex++)
|
||||
{
|
||||
Packet.WriteBEUInt8(BitsPerEntry);
|
||||
Packet.WriteVarInt32(0); // Palette length is 0
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
|
||||
|
||||
size_t StartIndex = SectionIndex * ChunkSectionBlocks;
|
||||
|
||||
UInt64 TempLong = 0; // Temporary value that will be stored into
|
||||
UInt64 CurrentlyWrittenIndex = 0; // "Index" of the long that would be written to
|
||||
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks; Index++)
|
||||
ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
|
||||
{
|
||||
UInt64 Value = static_cast<UInt64>(m_BlockTypes[StartIndex + Index] << 4);
|
||||
if (Index % 2 == 0)
|
||||
Packet.WriteBEUInt8(BitsPerEntry);
|
||||
Packet.WriteVarInt32(0); // Palette length is 0
|
||||
Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
|
||||
|
||||
UInt64 TempLong = 0; // Temporary value that will be stored into
|
||||
UInt64 CurrentlyWrittenIndex = 0; // "Index" of the long that would be written to
|
||||
|
||||
for (size_t Index = 0; Index < cChunkData::SectionBlockCount; Index++)
|
||||
{
|
||||
Value |= m_BlockMetas[(StartIndex + Index) / 2] & 0x0f;
|
||||
UInt64 Value = static_cast<UInt64>(a_Section.m_BlockTypes[Index] << 4);
|
||||
if (Index % 2 == 0)
|
||||
{
|
||||
Value |= a_Section.m_BlockMetas[Index / 2] & 0x0f;
|
||||
}
|
||||
else
|
||||
{
|
||||
Value |= a_Section.m_BlockMetas[Index / 2] >> 4;
|
||||
}
|
||||
Value &= Mask; // It shouldn't go out of bounds, but it's still worth being careful
|
||||
|
||||
// Painful part where we write data into the long array. Based off of the normal code.
|
||||
size_t BitPosition = Index * BitsPerEntry;
|
||||
size_t FirstIndex = BitPosition / 64;
|
||||
size_t SecondIndex = ((Index + 1) * BitsPerEntry - 1) / 64;
|
||||
size_t BitOffset = BitPosition % 64;
|
||||
|
||||
if (FirstIndex != CurrentlyWrittenIndex)
|
||||
{
|
||||
// Write the current data before modifiying it.
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
TempLong = 0;
|
||||
CurrentlyWrittenIndex = FirstIndex;
|
||||
}
|
||||
|
||||
TempLong |= (Value << BitOffset);
|
||||
|
||||
if (FirstIndex != SecondIndex)
|
||||
{
|
||||
// Part of the data is now in the second long; write the first one first
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
CurrentlyWrittenIndex = SecondIndex;
|
||||
|
||||
TempLong = (Value >> (64 - BitOffset));
|
||||
}
|
||||
}
|
||||
else
|
||||
// The last long will generally not be written
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
|
||||
// Write lighting:
|
||||
Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
Value |= m_BlockMetas[(StartIndex + Index) / 2] >> 4;
|
||||
}
|
||||
Value &= Mask; // It shouldn't go out of bounds, but it's still worth being careful
|
||||
|
||||
// Painful part where we write data into the long array. Based off of the normal code.
|
||||
size_t BitPosition = Index * BitsPerEntry;
|
||||
size_t FirstIndex = BitPosition / 64;
|
||||
size_t SecondIndex = ((Index + 1) * BitsPerEntry - 1) / 64;
|
||||
size_t BitOffset = BitPosition % 64;
|
||||
|
||||
if (FirstIndex != CurrentlyWrittenIndex)
|
||||
{
|
||||
// Write the current data before modifiying it.
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
TempLong = 0;
|
||||
CurrentlyWrittenIndex = FirstIndex;
|
||||
}
|
||||
|
||||
TempLong |= (Value << BitOffset);
|
||||
|
||||
if (FirstIndex != SecondIndex)
|
||||
{
|
||||
// Part of the data is now in the second long; write the first one first
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
CurrentlyWrittenIndex = SecondIndex;
|
||||
|
||||
TempLong = (Value >> (64 - BitOffset));
|
||||
// Skylight is only sent in the overworld; the nether and end do not use it
|
||||
Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
|
||||
}
|
||||
}
|
||||
// The last long will generally not be written
|
||||
Packet.WriteBEUInt64(TempLong);
|
||||
|
||||
// Light - stored as a nibble, so we need half sizes
|
||||
// As far as I know, there isn't a method to only write a range of the array
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks / 2; Index++)
|
||||
{
|
||||
Packet.WriteBEUInt8(m_BlockLight[(StartIndex / 2) + Index]);
|
||||
}
|
||||
if (m_Dimension == dimOverworld)
|
||||
{
|
||||
// Skylight is only sent in the overworld; the nether and end do not use it
|
||||
for (size_t Index = 0; Index < ChunkSectionBlocks / 2; Index++)
|
||||
{
|
||||
Packet.WriteBEUInt8(m_BlockSkyLight[(StartIndex / 2) + Index]);
|
||||
}
|
||||
}
|
||||
}
|
||||
);
|
||||
|
||||
// Write the biome data
|
||||
Packet.WriteBuf(m_BiomeData, BiomeDataSize);
|
||||
|
||||
@ -5,6 +5,7 @@
|
||||
// - serialize chunk data to different protocol versions
|
||||
// - cache such serialized data for multiple clients
|
||||
|
||||
#include "ChunkData.h"
|
||||
|
||||
|
||||
|
||||
@ -12,10 +13,7 @@
|
||||
class cChunkDataSerializer
|
||||
{
|
||||
protected:
|
||||
const cChunkDef::BlockTypes & m_BlockTypes;
|
||||
const cChunkDef::BlockNibbles & m_BlockMetas;
|
||||
const cChunkDef::BlockNibbles & m_BlockLight;
|
||||
const cChunkDef::BlockNibbles & m_BlockSkyLight;
|
||||
const cChunkData & m_Data;
|
||||
const unsigned char * m_BiomeData;
|
||||
const eDimension m_Dimension;
|
||||
|
||||
@ -36,12 +34,9 @@ public:
|
||||
} ;
|
||||
|
||||
cChunkDataSerializer(
|
||||
const cChunkDef::BlockTypes & a_BlockTypes,
|
||||
const cChunkDef::BlockNibbles & a_BlockMetas,
|
||||
const cChunkDef::BlockNibbles & a_BlockLight,
|
||||
const cChunkDef::BlockNibbles & a_BlockSkyLight,
|
||||
const unsigned char * a_BiomeData,
|
||||
const eDimension a_Dimension
|
||||
const cChunkData & a_Data,
|
||||
const unsigned char * a_BiomeData,
|
||||
const eDimension a_Dimension
|
||||
);
|
||||
|
||||
const AString & Serialize(int a_Version, int a_ChunkX, int a_ChunkZ); // Returns one of the internal m_Serializations[]
|
||||
|
||||
@ -27,7 +27,8 @@ int main(int argc, char** argv)
|
||||
buffer.SetBlock(3, 1, 4, 0xDE);
|
||||
buffer.SetMeta(3, 1, 4, 0xA);
|
||||
|
||||
cChunkData copy = buffer.Copy();
|
||||
cChunkData copy(Pool);
|
||||
copy.Assign(buffer);
|
||||
testassert(copy.GetBlock(3, 1, 4) == 0xDE);
|
||||
testassert(copy.GetMeta(3, 1, 4) == 0xA);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user