1 files changed, 605 insertions, 0 deletions

diff --git a/src/Generating/ChunkDesc.cpp b/src/Generating/ChunkDesc.cpp
new file mode 100644
index 000000000..6050430fd
--- /dev/null
+++ b/src/Generating/ChunkDesc.cpp
@@ -0,0 +1,605 @@
+
+// ChunkDesc.cpp
+
+// Implements the cChunkDesc class representing the chunk description used while generating a chunk. This class is also exported to Lua for HOOK_CHUNK_GENERATING.
+
+#include "Globals.h"
+#include "ChunkDesc.h"
+#include "../BlockArea.h"
+#include "../Cuboid.h"
+#include "../Noise.h"
+#include "../BlockEntities/BlockEntity.h"
+
+
+
+
+
+cChunkDesc::cChunkDesc(int a_ChunkX, int a_ChunkZ) :
+	m_ChunkX(a_ChunkX),
+	m_ChunkZ(a_ChunkZ),
+	m_bUseDefaultBiomes(true),
+	m_bUseDefaultHeight(true),
+	m_bUseDefaultComposition(true),
+	m_bUseDefaultStructures(true),
+	m_bUseDefaultFinish(true)
+{
+	m_BlockArea.Create(cChunkDef::Width, cChunkDef::Height, cChunkDef::Width);
+	/*
+	memset(m_BlockTypes, 0, sizeof(cChunkDef::BlockTypes));
+	memset(m_BlockMeta,  0, sizeof(cChunkDef::BlockNibbles));
+	*/
+	memset(m_BiomeMap,   0, sizeof(cChunkDef::BiomeMap));
+	memset(m_HeightMap,  0, sizeof(cChunkDef::HeightMap));
+}
+
+
+
+
+
+cChunkDesc::~cChunkDesc()
+{
+	// Nothing needed yet
+}
+
+
+
+
+
+void cChunkDesc::SetChunkCoords(int a_ChunkX, int a_ChunkZ)
+{
+	m_ChunkX = a_ChunkX;
+	m_ChunkZ = a_ChunkZ;
+}
+
+
+
+
+
+void cChunkDesc::FillBlocks(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+	m_BlockArea.Fill(cBlockArea::baTypes | cBlockArea::baMetas, a_BlockType, a_BlockMeta);
+}
+
+
+
+
+
+void cChunkDesc::SetBlockTypeMeta(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+{
+	m_BlockArea.SetRelBlockTypeMeta(a_RelX, a_RelY, a_RelZ, a_BlockType, a_BlockMeta);
+}
+
+
+
+
+
+void cChunkDesc::GetBlockTypeMeta(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta)
+{
+	m_BlockArea.GetRelBlockTypeMeta(a_RelX, a_RelY, a_RelZ, a_BlockType, a_BlockMeta);
+}
+
+
+
+
+
+void cChunkDesc::SetBlockType(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType)
+{
+	cChunkDef::SetBlock(m_BlockArea.GetBlockTypes(), a_RelX, a_RelY, a_RelZ, a_BlockType);
+}
+
+
+
+
+
+BLOCKTYPE cChunkDesc::GetBlockType(int a_RelX, int a_RelY, int a_RelZ)
+{
+	return cChunkDef::GetBlock(m_BlockArea.GetBlockTypes(), a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+NIBBLETYPE cChunkDesc::GetBlockMeta(int a_RelX, int a_RelY, int a_RelZ)
+{
+	return m_BlockArea.GetRelBlockMeta(a_RelX, a_RelY, a_RelZ);
+}
+
+
+
+
+
+void cChunkDesc::SetBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockMeta)
+{
+	m_BlockArea.SetRelBlockMeta(a_RelX, a_RelY, a_RelZ, a_BlockMeta);
+}
+
+
+
+
+
+void cChunkDesc::SetBiome(int a_RelX, int a_RelZ, int a_BiomeID)
+{
+	cChunkDef::SetBiome(m_BiomeMap, a_RelX, a_RelZ, (EMCSBiome)a_BiomeID);
+}
+
+
+
+
+EMCSBiome cChunkDesc::GetBiome(int a_RelX, int a_RelZ)
+{
+	return cChunkDef::GetBiome(m_BiomeMap, a_RelX, a_RelZ);
+}
+
+
+
+
+
+void cChunkDesc::SetHeight(int a_RelX, int a_RelZ, int a_Height)
+{
+	cChunkDef::SetHeight(m_HeightMap, a_RelX, a_RelZ, a_Height);
+}
+
+
+
+
+
+int cChunkDesc::GetHeight(int a_RelX, int a_RelZ)
+{
+	return cChunkDef::GetHeight(m_HeightMap, a_RelX, a_RelZ);
+}
+
+
+
+
+
+void cChunkDesc::SetUseDefaultBiomes(bool a_bUseDefaultBiomes)
+{
+	m_bUseDefaultBiomes = a_bUseDefaultBiomes;
+}
+
+
+
+
+
+bool cChunkDesc::IsUsingDefaultBiomes(void) const
+{
+	return m_bUseDefaultBiomes;
+}
+
+
+
+
+
+void cChunkDesc::SetUseDefaultHeight(bool a_bUseDefaultHeight)
+{
+	m_bUseDefaultHeight = a_bUseDefaultHeight;
+}
+
+
+
+
+
+bool cChunkDesc::IsUsingDefaultHeight(void) const
+{
+	return m_bUseDefaultHeight;
+}
+
+
+
+
+
+void cChunkDesc::SetUseDefaultComposition(bool a_bUseDefaultComposition)
+{
+	m_bUseDefaultComposition = a_bUseDefaultComposition;
+}
+
+
+
+
+
+bool cChunkDesc::IsUsingDefaultComposition(void) const
+{
+	return m_bUseDefaultComposition;
+}
+
+
+
+
+
+void cChunkDesc::SetUseDefaultStructures(bool a_bUseDefaultStructures)
+{
+	m_bUseDefaultStructures = a_bUseDefaultStructures;
+}
+
+
+
+
+
+bool cChunkDesc::IsUsingDefaultStructures(void) const
+{
+	return m_bUseDefaultStructures;
+}
+
+
+
+
+
+void cChunkDesc::SetUseDefaultFinish(bool a_bUseDefaultFinish)
+{
+	m_bUseDefaultFinish = a_bUseDefaultFinish;
+}
+
+
+
+
+
+bool cChunkDesc::IsUsingDefaultFinish(void) const
+{
+	return m_bUseDefaultFinish;
+}
+
+
+
+
+void cChunkDesc::WriteBlockArea(const cBlockArea & a_BlockArea, int a_RelX, int a_RelY, int a_RelZ, cBlockArea::eMergeStrategy a_MergeStrategy)
+{
+	m_BlockArea.Merge(a_BlockArea, a_RelX, a_RelY, a_RelZ, a_MergeStrategy);
+}
+
+
+
+
+
+void cChunkDesc::ReadBlockArea(cBlockArea & a_Dest, int a_MinRelX, int a_MaxRelX, int a_MinRelY, int a_MaxRelY, int a_MinRelZ, int a_MaxRelZ)
+{
+	// Normalize the coords:
+	if (a_MinRelX > a_MaxRelX)
+	{
+		std::swap(a_MinRelX, a_MaxRelX);
+	}
+	if (a_MinRelY > a_MaxRelY)
+	{
+		std::swap(a_MinRelY, a_MaxRelY);
+	}
+	if (a_MinRelZ > a_MaxRelZ)
+	{
+		std::swap(a_MinRelZ, a_MaxRelZ);
+	}
+
+	// Include the Max coords:
+	a_MaxRelX += 1;
+	a_MaxRelY += 1;
+	a_MaxRelZ += 1;
+
+	// Check coords validity:
+	if (a_MinRelX < 0)
+	{
+		LOGWARNING("%s: MinRelX less than zero, adjusting to zero", __FUNCTION__);
+		a_MinRelX = 0;
+	}
+	else if (a_MinRelX >= cChunkDef::Width)
+	{
+		LOGWARNING("%s: MinRelX more than chunk width, adjusting to chunk width", __FUNCTION__);
+		a_MinRelX = cChunkDef::Width - 1;
+	}
+	if (a_MaxRelX < 0)
+	{
+		LOGWARNING("%s: MaxRelX less than zero, adjusting to zero", __FUNCTION__);
+		a_MaxRelX = 0;
+	}
+	else if (a_MinRelX >= cChunkDef::Width)
+	{
+		LOGWARNING("%s: MaxRelX more than chunk width, adjusting to chunk width", __FUNCTION__);
+		a_MaxRelX = cChunkDef::Width - 1;
+	}
+
+	if (a_MinRelY < 0)
+	{
+		LOGWARNING("%s: MinRelY less than zero, adjusting to zero", __FUNCTION__);
+		a_MinRelY = 0;
+	}
+	else if (a_MinRelY >= cChunkDef::Height)
+	{
+		LOGWARNING("%s: MinRelY more than chunk height, adjusting to chunk height", __FUNCTION__);
+		a_MinRelY = cChunkDef::Height - 1;
+	}
+	if (a_MaxRelY < 0)
+	{
+		LOGWARNING("%s: MaxRelY less than zero, adjusting to zero", __FUNCTION__);
+		a_MaxRelY = 0;
+	}
+	else if (a_MinRelY >= cChunkDef::Height)
+	{
+		LOGWARNING("%s: MaxRelY more than chunk height, adjusting to chunk height", __FUNCTION__);
+		a_MaxRelY = cChunkDef::Height - 1;
+	}
+
+	if (a_MinRelZ < 0)
+	{
+		LOGWARNING("%s: MinRelZ less than zero, adjusting to zero", __FUNCTION__);
+		a_MinRelZ = 0;
+	}
+	else if (a_MinRelZ >= cChunkDef::Width)
+	{
+		LOGWARNING("%s: MinRelZ more than chunk width, adjusting to chunk width", __FUNCTION__);
+		a_MinRelZ = cChunkDef::Width - 1;
+	}
+	if (a_MaxRelZ < 0)
+	{
+		LOGWARNING("%s: MaxRelZ less than zero, adjusting to zero", __FUNCTION__);
+		a_MaxRelZ = 0;
+	}
+	else if (a_MinRelZ >= cChunkDef::Width)
+	{
+		LOGWARNING("%s: MaxRelZ more than chunk width, adjusting to chunk width", __FUNCTION__);
+		a_MaxRelZ = cChunkDef::Width - 1;
+	}
+
+	// Prepare the block area:
+	int SizeX = a_MaxRelX - a_MinRelX;
+	int SizeY = a_MaxRelY - a_MinRelY;
+	int SizeZ = a_MaxRelZ - a_MinRelZ;
+	a_Dest.Clear();
+	a_Dest.m_OriginX = m_ChunkX * cChunkDef::Width + a_MinRelX;
+	a_Dest.m_OriginY = a_MinRelY;
+	a_Dest.m_OriginZ = m_ChunkZ * cChunkDef::Width + a_MinRelZ;
+	a_Dest.SetSize(SizeX, SizeY, SizeZ, cBlockArea::baTypes | cBlockArea::baMetas);
+
+	for (int y = 0; y < SizeY; y++)
+	{
+		int CDY = a_MinRelY + y;
+		for (int z = 0; z < SizeZ; z++)
+		{
+			int CDZ = a_MinRelZ + z;
+			for (int x = 0; x < SizeX; x++)
+			{
+				int CDX = a_MinRelX + x;
+				BLOCKTYPE BlockType;
+				NIBBLETYPE BlockMeta;
+				GetBlockTypeMeta(CDX, CDY, CDZ, BlockType, BlockMeta);
+				a_Dest.SetRelBlockTypeMeta(x, y, z, BlockType, BlockMeta);
+			}  // for x
+		}  // for z
+	}  // for y
+}
+
+
+
+
+
+HEIGHTTYPE cChunkDesc::GetMaxHeight(void) const
+{
+	HEIGHTTYPE MaxHeight = m_HeightMap[0];
+	for (unsigned int i = 1; i < ARRAYCOUNT(m_HeightMap); i++)
+	{
+		if (m_HeightMap[i] > MaxHeight)
+		{
+			MaxHeight = m_HeightMap[i];
+		}
+	}
+	return MaxHeight;
+}
+
+
+
+
+
+void cChunkDesc::FillRelCuboid(
+	int a_MinX, int a_MaxX,
+	int a_MinY, int a_MaxY,
+	int a_MinZ, int a_MaxZ,
+	BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
+)
+{
+	int MinX = std::max(a_MinX, 0);
+	int MinY = std::max(a_MinY, 0);
+	int MinZ = std::max(a_MinZ, 0);
+	int MaxX = std::min(a_MaxX, cChunkDef::Width - 1);
+	int MaxY = std::min(a_MaxY, cChunkDef::Height - 1);
+	int MaxZ = std::min(a_MaxZ, cChunkDef::Width - 1);
+
+	for (int y = MinY; y <= MaxY; y++)
+	{
+		for (int z = MinZ; z <= MaxZ; z++)
+		{
+			for (int x = MinX; x <= MaxX; x++)
+			{
+				SetBlockTypeMeta(x, y, z, a_BlockType, a_BlockMeta);
+			}
+		}  // for z
+	}  // for y
+}
+
+
+
+
+
+void cChunkDesc::ReplaceRelCuboid(
+	int a_MinX, int a_MaxX,
+	int a_MinY, int a_MaxY,
+	int a_MinZ, int a_MaxZ,
+	BLOCKTYPE a_SrcType, NIBBLETYPE a_SrcMeta,
+	BLOCKTYPE a_DstType, NIBBLETYPE a_DstMeta
+)
+{
+	int MinX = std::max(a_MinX, 0);
+	int MinY = std::max(a_MinY, 0);
+	int MinZ = std::max(a_MinZ, 0);
+	int MaxX = std::min(a_MaxX, cChunkDef::Width - 1);
+	int MaxY = std::min(a_MaxY, cChunkDef::Height - 1);
+	int MaxZ = std::min(a_MaxZ, cChunkDef::Width - 1);
+
+	for (int y = MinY; y <= MaxY; y++)
+	{
+		for (int z = MinZ; z <= MaxZ; z++)
+		{
+			for (int x = MinX; x <= MaxX; x++)
+			{
+				BLOCKTYPE BlockType;
+				NIBBLETYPE BlockMeta;
+				GetBlockTypeMeta(x, y, z, BlockType, BlockMeta);
+				if ((BlockType == a_SrcType) && (BlockMeta == a_SrcMeta))
+				{
+					SetBlockTypeMeta(x, y, z, a_DstType, a_DstMeta);
+				}
+			}
+		}  // for z
+	}  // for y
+}
+
+
+
+
+
+void cChunkDesc::FloorRelCuboid(
+	int a_MinX, int a_MaxX,
+	int a_MinY, int a_MaxY,
+	int a_MinZ, int a_MaxZ,
+	BLOCKTYPE a_DstType, NIBBLETYPE a_DstMeta
+)
+{
+	int MinX = std::max(a_MinX, 0);
+	int MinY = std::max(a_MinY, 0);
+	int MinZ = std::max(a_MinZ, 0);
+	int MaxX = std::min(a_MaxX, cChunkDef::Width - 1);
+	int MaxY = std::min(a_MaxY, cChunkDef::Height - 1);
+	int MaxZ = std::min(a_MaxZ, cChunkDef::Width - 1);
+
+	for (int y = MinY; y <= MaxY; y++)
+	{
+		for (int z = MinZ; z <= MaxZ; z++)
+		{
+			for (int x = MinX; x <= MaxX; x++)
+			{
+				switch (GetBlockType(x, y, z))
+				{
+					case E_BLOCK_AIR:
+					case E_BLOCK_WATER:
+					case E_BLOCK_STATIONARY_WATER:
+					{
+						SetBlockTypeMeta(x, y, z, a_DstType, a_DstMeta);
+						break;
+					}
+				}  // switch (GetBlockType)
+			}  // for x
+		}  // for z
+	}  // for y
+}
+
+
+
+
+
+void cChunkDesc::RandomFillRelCuboid(
+	int a_MinX, int a_MaxX,
+	int a_MinY, int a_MaxY,
+	int a_MinZ, int a_MaxZ,
+	BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta,
+	int a_RandomSeed, int a_ChanceOutOf10k
+)
+{
+	cNoise Noise(a_RandomSeed);
+	int MinX = std::max(a_MinX, 0);
+	int MinY = std::max(a_MinY, 0);
+	int MinZ = std::max(a_MinZ, 0);
+	int MaxX = std::min(a_MaxX, cChunkDef::Width - 1);
+	int MaxY = std::min(a_MaxY, cChunkDef::Height - 1);
+	int MaxZ = std::min(a_MaxZ, cChunkDef::Width - 1);
+
+	for (int y = MinY; y <= MaxY; y++)
+	{
+		for (int z = MinZ; z <= MaxZ; z++)
+		{
+			for (int x = MinX; x <= MaxX; x++)
+			{
+				int rnd = (Noise.IntNoise3DInt(x, y, z) / 7) % 10000;
+				if (rnd <= a_ChanceOutOf10k)
+				{
+					SetBlockTypeMeta(x, y, z, a_BlockType, a_BlockMeta);
+				}
+			}
+		}  // for z
+	}  // for y
+}
+
+
+
+
+
+cBlockEntity * cChunkDesc::GetBlockEntity(int a_RelX, int a_RelY, int a_RelZ)
+{
+	int AbsX = a_RelX + m_ChunkX * cChunkDef::Width;
+	int AbsZ = a_RelZ + m_ChunkZ * cChunkDef::Width;
+	for (cBlockEntityList::iterator itr = m_BlockEntities.begin(), end = m_BlockEntities.end(); itr != end; ++itr)
+	{
+		if (((*itr)->GetPosX() == AbsX) && ((*itr)->GetPosY() == a_RelY) && ((*itr)->GetPosZ() == AbsZ))
+		{
+			// Already in the list:
+			if ((*itr)->GetBlockType() != GetBlockType(a_RelX, a_RelY, a_RelZ))
+			{
+				// Wrong type, the block type has been overwritten. Erase and create new:
+				m_BlockEntities.erase(itr);
+				break;
+			}
+			// Correct type, already present. Return it:
+			return *itr;
+		}
+	}  // for itr - m_BlockEntities[]
+	
+	// The block entity is not created yet, try to create it and add to list:
+	cBlockEntity * be = cBlockEntity::CreateByBlockType(GetBlockType(a_RelX, a_RelY, a_RelZ), GetBlockMeta(a_RelX, a_RelY, a_RelZ), AbsX, a_RelY, AbsZ);
+	if (be == NULL)
+	{
+		// No block entity for this block type
+		return NULL;
+	}
+	m_BlockEntities.push_back(be);
+	return be;
+}
+
+
+
+
+
+void cChunkDesc::CompressBlockMetas(cChunkDef::BlockNibbles & a_DestMetas)
+{
+	const NIBBLETYPE * AreaMetas = m_BlockArea.GetBlockMetas();
+	for (unsigned int i = 0; i < ARRAYCOUNT(a_DestMetas); i++)
+	{
+		a_DestMetas[i] = AreaMetas[2 * i] | (AreaMetas[2 * i + 1] << 4);
+	}
+}
+
+
+
+
+
+#ifdef _DEBUG
+
+void cChunkDesc::VerifyHeightmap(void)
+{
+	for (int x = 0; x < cChunkDef::Width; x++)
+	{
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			for (int y = cChunkDef::Height - 1; y > 0; y--)
+			{
+				BLOCKTYPE BlockType = GetBlockType(x, y, z);
+				if (BlockType != E_BLOCK_AIR)
+				{
+					int Height = GetHeight(x, z);
+					ASSERT(Height == y);
+					break;
+				}
+			}  // for y
+		}  // for z
+	}  // for x
+}
+
+#endif  // _DEBUG
+
+
+
+
+