699 lines
14 KiB
C++
699 lines
14 KiB
C++
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#include "Globals.h"
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#include "ChunkData.h"
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cChunkData::cChunkData()
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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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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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m_Sections[i] = NULL;
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}
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}
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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 < CHUNK_SECTION_COUNT; i++)
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{
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Free(m_Sections[i]);
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}
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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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cChunkData::cChunkData(const cChunkData & a_Other) :
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m_IsOwner(true)
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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 < CHUNK_SECTION_COUNT; 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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}
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cChunkData & cChunkData::operator =(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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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 < CHUNK_SECTION_COUNT; i++)
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{
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Free(m_Sections[i]);
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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 < CHUNK_SECTION_COUNT; 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 *this;
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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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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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m_Sections[i] = other.m_Sections[i];
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other.m_Sections[i] = NULL;
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}
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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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for (size_t i = 0; i < CHUNK_SECTION_COUNT; 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] = NULL;
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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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BLOCKTYPE cChunkData::GetBlock(int a_X, int a_Y, int a_Z) const
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{
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ASSERT((a_X >= 0) && (a_X < cChunkDef::Width));
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ASSERT((a_Y >= 0) && (a_Y < cChunkDef::Height));
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ASSERT((a_Z >= 0) && (a_Z < cChunkDef::Width));
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int Section = a_Y / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] != NULL)
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{
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int Index = cChunkDef::MakeIndexNoCheck(a_X, a_Y - (Section * CHUNK_SECTION_HEIGHT), a_Z);
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return m_Sections[Section]->m_BlockTypes[Index];
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}
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else
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{
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return 0;
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}
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}
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void cChunkData::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block)
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{
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if (
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(a_RelX >= cChunkDef::Width) || (a_RelX < 0) ||
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(a_RelY >= cChunkDef::Height) || (a_RelY < 0) ||
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(a_RelZ >= cChunkDef::Width) || (a_RelZ < 0)
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)
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{
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ASSERT(!"cChunkData::SetMeta(): index out of range!");
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return;
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}
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int Section = a_RelY / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] == NULL)
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{
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if (a_Block == 0x00)
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{
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return;
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}
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m_Sections[Section] = Allocate();
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if (m_Sections[Section] == NULL)
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{
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ASSERT(!"Failed to allocate a new section in Chunkbuffer");
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return;
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}
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ZeroSection(m_Sections[Section]);
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}
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int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
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m_Sections[Section]->m_BlockTypes[Index] = a_Block;
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}
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NIBBLETYPE cChunkData::GetMeta(int a_RelX, int a_RelY, int a_RelZ) const
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{
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if (
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(a_RelX < cChunkDef::Width) && (a_RelX > -1) &&
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(a_RelY < cChunkDef::Height) && (a_RelY > -1) &&
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(a_RelZ < cChunkDef::Width) && (a_RelZ > -1))
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{
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int Section = a_RelY / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] != NULL)
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{
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int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
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return (m_Sections[Section]->m_BlockMeta[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
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}
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else
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{
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return 0;
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}
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}
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ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!");
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return 0;
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}
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bool cChunkData::SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble)
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{
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if (
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(a_RelX >= cChunkDef::Width) || (a_RelX < 0) ||
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(a_RelY >= cChunkDef::Height) || (a_RelY < 0) ||
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(a_RelZ >= cChunkDef::Width) || (a_RelZ < 0)
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)
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{
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ASSERT(!"cChunkData::SetMeta(): index out of range!");
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return false;
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}
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int Section = a_RelY / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] == NULL)
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{
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if ((a_Nibble & 0xf) == 0x00)
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{
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return false;
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}
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m_Sections[Section] = Allocate();
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if (m_Sections[Section] == NULL)
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{
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ASSERT(!"Failed to allocate a new section in Chunkbuffer");
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return false;
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}
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ZeroSection(m_Sections[Section]);
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}
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int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
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NIBBLETYPE oldval = m_Sections[Section]->m_BlockMeta[Index / 2] >> ((Index & 1) * 4) & 0xf;
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m_Sections[Section]->m_BlockMeta[Index / 2] = static_cast<NIBBLETYPE>(
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(m_Sections[Section]->m_BlockMeta[Index / 2] & (0xf0 >> ((Index & 1) * 4))) | // The untouched nibble
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((a_Nibble & 0x0f) << ((Index & 1) * 4)) // The nibble being set
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);
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return oldval == a_Nibble;
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}
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NIBBLETYPE cChunkData::GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const
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{
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if (
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(a_RelX < cChunkDef::Width) && (a_RelX > -1) &&
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(a_RelY < cChunkDef::Height) && (a_RelY > -1) &&
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(a_RelZ < cChunkDef::Width) && (a_RelZ > -1)
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)
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{
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int Section = a_RelY / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] != NULL)
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{
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int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
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return (m_Sections[Section]->m_BlockLight[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
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}
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else
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{
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return 0;
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}
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}
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ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!");
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return 0;
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}
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NIBBLETYPE cChunkData::GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const
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{
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if ((a_RelX < cChunkDef::Width) && (a_RelX > -1) && (a_RelY < cChunkDef::Height) && (a_RelY > -1) && (a_RelZ < cChunkDef::Width) && (a_RelZ > -1))
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{
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int Section = a_RelY / CHUNK_SECTION_HEIGHT;
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if (m_Sections[Section] != NULL)
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{
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int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
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return (m_Sections[Section]->m_BlockLight[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
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}
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else
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{
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return 0xF;
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}
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}
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ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!");
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return 0;
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}
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cChunkData cChunkData::Copy(void) const
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{
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cChunkData copy;
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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if (m_Sections[i] != NULL)
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{
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copy.m_Sections[i] = Allocate();
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*copy.m_Sections[i] = *m_Sections[i];
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}
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}
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return copy;
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}
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void cChunkData::CopyBlocks(BLOCKTYPE * a_Dest, size_t a_Idx, size_t a_Length) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16;
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if (a_Idx > 0)
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{
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a_Idx = std::max(a_Idx - a_Length, (size_t) 0);
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}
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if (a_Idx == 0)
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{
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size_t ToCopy = std::min(SegmentLength, a_Length);
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length -= ToCopy;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_Dest[i * SegmentLength],
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&m_Sections[i]->m_BlockTypes,
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sizeof(BLOCKTYPE) * ToCopy
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);
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}
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else
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{
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memset(
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&a_Dest[i * SegmentLength],
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0,
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sizeof(BLOCKTYPE) * ToCopy
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);
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}
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}
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}
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}
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void cChunkData::CopyMeta(NIBBLETYPE * a_Dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_Dest[i * SegmentLength],
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&m_Sections[i]->m_BlockMeta,
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sizeof(NIBBLETYPE) * SegmentLength
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);
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}
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else
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{
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memset(
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&a_Dest[i * SegmentLength],
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0,
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sizeof(BLOCKTYPE) * SegmentLength
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);
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}
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}
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}
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void cChunkData::CopyBlockLight(NIBBLETYPE * a_Dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_Dest[i * SegmentLength],
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&m_Sections[i]->m_BlockLight,
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sizeof(NIBBLETYPE) * SegmentLength
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);
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}
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else
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{
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memset(
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&a_Dest[i * SegmentLength],
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0,
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sizeof(BLOCKTYPE) * SegmentLength
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);
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}
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}
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}
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void cChunkData::CopySkyLight(NIBBLETYPE * a_Dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_Dest[i * SegmentLength],
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&m_Sections[i]->m_BlockSkyLight,
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sizeof(NIBBLETYPE) * SegmentLength
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);
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}
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else
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{
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memset(
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&a_Dest[i * SegmentLength],
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0xFF,
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sizeof(BLOCKTYPE) * SegmentLength
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);
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}
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}
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}
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void cChunkData::SetBlocks(const BLOCKTYPE * a_Src)
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{
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ASSERT(a_Src != NULL);
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockTypes,
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&a_Src[i * SegmentLength],
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sizeof(BLOCKTYPE) * SegmentLength
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == SegmentLength then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; (j < SegmentLength) && (a_Src[i * SegmentLength + j] == 0); j++);
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if (j != SegmentLength)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockTypes,
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&a_Src[i * SegmentLength],
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sizeof(BLOCKTYPE) * SegmentLength
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);
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memset(
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m_Sections[i]->m_BlockMeta,
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0x00,
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sizeof(m_Sections[i]->m_BlockMeta)
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);
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memset(
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m_Sections[i]->m_BlockLight,
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0x00,
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sizeof(m_Sections[i]->m_BlockLight)
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);
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memset(
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m_Sections[i]->m_BlockSkyLight,
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0xFF,
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sizeof(m_Sections[i]->m_BlockSkyLight)
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);
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}
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}
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}
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}
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void cChunkData::SetMeta(const NIBBLETYPE * a_Src)
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{
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ASSERT(a_Src != NULL);
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockMeta,
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&a_Src[i * SegmentLength],
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sizeof(NIBBLETYPE) * SegmentLength
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == SegmentLength then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; (j < SegmentLength) && (a_Src[i * SegmentLength + j] == 0); j++);
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if (j != SegmentLength)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockMeta,
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&a_Src[i * SegmentLength],
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sizeof(BLOCKTYPE) * SegmentLength
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);
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memset(
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m_Sections[i]->m_BlockTypes,
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0x00,
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sizeof(m_Sections[i]->m_BlockTypes)
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);
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memset(
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m_Sections[i]->m_BlockLight,
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0x00,
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sizeof(m_Sections[i]->m_BlockLight)
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);
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memset(
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m_Sections[i]->m_BlockSkyLight,
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0xFF,
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sizeof(m_Sections[i]->m_BlockSkyLight)
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);
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}
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}
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}
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}
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void cChunkData::SetBlockLight(const NIBBLETYPE * a_Src)
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{
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if (a_Src == NULL)
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{
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return;
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}
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockLight,
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&a_Src[i * SegmentLength],
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sizeof(NIBBLETYPE) * SegmentLength
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == SegmentLength then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
|
|
for (; (j < SegmentLength) && (a_Src[i * SegmentLength + j] == 0); j++);
|
|
if (j != SegmentLength)
|
|
{
|
|
m_Sections[i] = Allocate();
|
|
memcpy(
|
|
&m_Sections[i]->m_BlockLight,
|
|
&a_Src[i * SegmentLength],
|
|
sizeof(BLOCKTYPE) * SegmentLength
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockTypes,
|
|
0x00,
|
|
sizeof(m_Sections[i]->m_BlockTypes)
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockMeta,
|
|
0x00,
|
|
sizeof(m_Sections[i]->m_BlockMeta)
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockSkyLight,
|
|
0xFF,
|
|
sizeof(m_Sections[i]->m_BlockSkyLight)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
void cChunkData::SetSkyLight(const NIBBLETYPE * a_Src)
|
|
{
|
|
if (a_Src == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
|
|
{
|
|
const size_t SegmentLength = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
|
|
if (m_Sections[i] != NULL)
|
|
{
|
|
memcpy(
|
|
&m_Sections[i]->m_BlockSkyLight,
|
|
&a_Src[i * SegmentLength],
|
|
sizeof(NIBBLETYPE) * SegmentLength
|
|
);
|
|
}
|
|
else
|
|
{
|
|
// j counts how many of leading zeros the buffer has
|
|
// if j == SegmentLength then the buffer is all zeros so there is no point
|
|
// creating the buffer.
|
|
size_t j = 0;
|
|
// do nothing whilst 0
|
|
for (; (j < SegmentLength) && (a_Src[i * SegmentLength + j]) == 0xFF; j++);
|
|
if (j != SegmentLength)
|
|
{
|
|
m_Sections[i] = Allocate();
|
|
memcpy(
|
|
&m_Sections[i]->m_BlockSkyLight,
|
|
&a_Src[i * SegmentLength],
|
|
sizeof(BLOCKTYPE) * SegmentLength
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockTypes,
|
|
0x00,
|
|
sizeof(m_Sections[i]->m_BlockTypes)
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockMeta,
|
|
0x00,
|
|
sizeof(m_Sections[i]->m_BlockMeta)
|
|
);
|
|
memset(
|
|
m_Sections[i]->m_BlockLight,
|
|
0x00,
|
|
sizeof(m_Sections[i]->m_BlockLight)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
cChunkData::sChunkSection * cChunkData::Allocate(void) const
|
|
{
|
|
// TODO: Use an allocation pool
|
|
return new cChunkData::sChunkSection;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cChunkData::Free(cChunkData::sChunkSection * a_Section) const
|
|
{
|
|
// TODO: Use an allocation pool
|
|
delete a_Section;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void cChunkData::ZeroSection(cChunkData::sChunkSection * a_Section) const
|
|
{
|
|
memset(
|
|
a_Section->m_BlockTypes,
|
|
0x00,
|
|
sizeof(a_Section->m_BlockTypes)
|
|
);
|
|
memset(
|
|
a_Section->m_BlockMeta,
|
|
0x00,
|
|
sizeof(a_Section->m_BlockMeta)
|
|
);
|
|
memset(
|
|
a_Section->m_BlockLight,
|
|
0x00,
|
|
sizeof(a_Section->m_BlockLight)
|
|
);
|
|
memset(
|
|
a_Section->m_BlockSkyLight,
|
|
0xFF,
|
|
sizeof(a_Section->m_BlockSkyLight)
|
|
);
|
|
}
|
|
|
|
|
|
|
|
|