32 files changed, 5027 insertions, 228 deletions

diff --git a/src/Generating/BioGen.cpp b/src/Generating/BioGen.cpp
index f89b1800d..32a687201 100644
--- a/src/Generating/BioGen.cpp
+++ b/src/Generating/BioGen.cpp
@@ -97,7 +97,7 @@ void cBioGenConstant::InitializeBiomeGen(cIniFile & a_IniFile)
 {
 	AString Biome = a_IniFile.GetValueSet("Generator", "ConstantBiome", "Plains");
 	m_Biome = StringToBiome(Biome);
-	if (m_Biome == -1)
+	if (m_Biome == biInvalidBiome)
 	{
 		LOGWARN("[Generator]::ConstantBiome value \"%s\" not recognized, using \"Plains\".", Biome.c_str());
 		m_Biome = biPlains;
@@ -233,7 +233,7 @@ void cBiomeGenList::InitializeBiomes(const AString & a_Biomes)
 			}
 		}
 		EMCSBiome Biome = StringToBiome(Split2[0]);
-		if (Biome != -1)
+		if (Biome != biInvalidBiome)
 		{
 			for (int i = 0; i < Count; i++)
 			{
@@ -371,8 +371,8 @@ void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::B
 		Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z]);
 	}
 	
-	LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
-	LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortX[0][0]);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortZ[0][0]);
 	
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
@@ -477,8 +477,8 @@ void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cC
 	{
 		Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z], DistortSize);
 	}
-	LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
-	LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortX[0][0]);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortZ[0][0]);
 	
 	// Prepare a 9x9 area of neighboring cell seeds
 	// (assuming that 7x7 cell area is larger than a chunk being generated)
@@ -500,7 +500,7 @@ void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cC
 			int OffsetZ = (m_Noise4.IntNoise3DInt(RealCellX, 32 * RealCellX - 16 * RealCellZ, RealCellZ) / 8) % m_OceanCellSize;
 			SeedX[xc][zc] = CellBlockX + OffsetX;
 			SeedZ[xc][zc] = CellBlockZ + OffsetZ;
-			SeedV[xc][zc] = (((m_Noise6.IntNoise3DInt(RealCellX, RealCellX - RealCellZ + 1000, RealCellZ) / 11) % 256) > 90) ? biOcean : ((EMCSBiome)(-1));
+			SeedV[xc][zc] = (((m_Noise6.IntNoise3DInt(RealCellX, RealCellX - RealCellZ + 1000, RealCellZ) / 11) % 256) > 90) ? biOcean : (biInvalidBiome);
 		}  // for z
 	}  // for x
 	
@@ -573,7 +573,7 @@ void cBioGenMultiStepMap::AddRivers(int a_ChunkX, int a_ChunkZ, cChunkDef::Biome
 		float NoiseCoordZ = (float)(a_ChunkZ * cChunkDef::Width + z) / m_RiverCellSize;
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			if (cChunkDef::GetBiome(a_BiomeMap, x, z) != -1)
+			if (cChunkDef::GetBiome(a_BiomeMap, x, z) != biInvalidBiome)
 			{
 				// Biome already set, skip this column
 				continue;
@@ -651,8 +651,8 @@ void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_Chunk
 			HumidityMap[x + 17 * z] = NoiseH;
 		}  // for x
 	}  // for z
-	LinearUpscale2DArrayInPlace(TemperatureMap, 17, 17, 8, 8);
-	LinearUpscale2DArrayInPlace(HumidityMap,    17, 17, 8, 8);
+	LinearUpscale2DArrayInPlace<17, 17, 8, 8>(TemperatureMap);
+	LinearUpscale2DArrayInPlace<17, 17, 8, 8>(HumidityMap);
 	
 	// Re-map into integral values in [0 .. 255] range:
 	for (size_t idx = 0; idx < ARRAYCOUNT(a_TemperatureMap); idx++)
@@ -693,7 +693,7 @@ void cBioGenMultiStepMap::DecideLandBiomes(cChunkDef::BiomeMap & a_BiomeMap, con
 		int idxZ = 17 * z;
 		for (int x = 0; x < cChunkDef::Width; x++)
 		{
-			if (cChunkDef::GetBiome(a_BiomeMap, x, z) != -1)
+			if (cChunkDef::GetBiome(a_BiomeMap, x, z) != biInvalidBiome)
 			{
 				// Already set before
 				continue;
@@ -778,8 +778,8 @@ void cBioGenTwoLevel::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap
 		DistortZ[4 * x][4 * z] = BlockZ + (int)(64 * NoiseZ);
 	}
 	
-	LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
-	LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortX[0][0]);
+	LinearUpscale2DArrayInPlace<cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4>(&DistortZ[0][0]);
 	
 	// Apply distortion to each block coord, then query the voronoi maps for biome group and biome index and choose biome based on that:
 	for (int z = 0; z < cChunkDef::Width; z++)
diff --git a/src/Generating/CMakeLists.txt b/src/Generating/CMakeLists.txt
index e1ba299fc..1147744c0 100644
--- a/src/Generating/CMakeLists.txt
+++ b/src/Generating/CMakeLists.txt
@@ -9,3 +9,5 @@ file(GLOB SOURCE
 )
 
 add_library(Generating ${SOURCE})
+
+target_link_libraries(Generating OSSupport iniFile Blocks)
diff --git a/src/Generating/Caves.cpp b/src/Generating/Caves.cpp
index 2571e6b77..98b7c8681 100644
--- a/src/Generating/Caves.cpp
+++ b/src/Generating/Caves.cpp
@@ -762,7 +762,7 @@ void cStructGenWormNestCaves::ClearCache(void)
 
 
 
-void cStructGenWormNestCaves::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenWormNestCaves::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
@@ -902,7 +902,7 @@ static float GetMarbleNoise( float x, float y, float z, cNoise & a_Noise )
 
 
 
-void cStructGenMarbleCaves::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenMarbleCaves::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	cNoise Noise(m_Seed);
 	for (int z = 0; z < cChunkDef::Width; z++)
@@ -938,7 +938,7 @@ void cStructGenMarbleCaves::GenStructures(cChunkDesc & a_ChunkDesc)
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cStructGenDualRidgeCaves:
 
-void cStructGenDualRidgeCaves::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenDualRidgeCaves::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	for (int z = 0; z < cChunkDef::Width; z++)
 	{
diff --git a/src/Generating/Caves.h b/src/Generating/Caves.h
index ea7f10bf4..7c45c056b 100644
--- a/src/Generating/Caves.h
+++ b/src/Generating/Caves.h
@@ -20,7 +20,7 @@
 
 
 class cStructGenMarbleCaves :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenMarbleCaves(int a_Seed) : m_Seed(a_Seed) {}
@@ -29,8 +29,8 @@ protected:
 
 	int m_Seed;
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
@@ -38,7 +38,7 @@ protected:
 
 
 class cStructGenDualRidgeCaves :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenDualRidgeCaves(int a_Seed, float a_Threshold) :
@@ -55,8 +55,8 @@ protected:
 	int    m_Seed;
 	float  m_Threshold;
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
@@ -64,7 +64,7 @@ protected:
 
 
 class cStructGenWormNestCaves :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenWormNestCaves(int a_Seed, int a_Size = 64, int a_Grid = 96, int a_MaxOffset = 128) :
@@ -94,7 +94,7 @@ protected:
 	void GetCavesForChunk(int a_ChunkX, int a_ChunkZ, cCaveSystems & a_Caves);
 	
 	// cStructGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
diff --git a/src/Generating/ChunkDesc.cpp b/src/Generating/ChunkDesc.cpp
index af1a8a6c7..7711723fc 100644
--- a/src/Generating/ChunkDesc.cpp
+++ b/src/Generating/ChunkDesc.cpp
@@ -118,9 +118,9 @@ void cChunkDesc::SetBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_B
 
 
 
-void cChunkDesc::SetBiome(int a_RelX, int a_RelZ, int a_BiomeID)
+void cChunkDesc::SetBiome(int a_RelX, int a_RelZ, EMCSBiome a_BiomeID)
 {
-	cChunkDef::SetBiome(m_BiomeMap, a_RelX, a_RelZ, (EMCSBiome)a_BiomeID);
+	cChunkDef::SetBiome(m_BiomeMap, a_RelX, a_RelZ, a_BiomeID);
 }
 
 
@@ -209,6 +209,7 @@ bool cChunkDesc::IsUsingDefaultComposition(void) const
 
 void cChunkDesc::SetUseDefaultStructures(bool a_bUseDefaultStructures)
 {
+	LOGWARNING("%s: Structures are no longer accounted for, use Finishers instead", __FUNCTION__);
 	m_bUseDefaultStructures = a_bUseDefaultStructures;
 }
 
@@ -218,6 +219,7 @@ void cChunkDesc::SetUseDefaultStructures(bool a_bUseDefaultStructures)
 
 bool cChunkDesc::IsUsingDefaultStructures(void) const
 {
+	LOGWARNING("%s: Structures are no longer accounted for, use Finishers instead", __FUNCTION__);
 	return m_bUseDefaultStructures;
 }
 
@@ -341,9 +343,9 @@ void cChunkDesc::ReadBlockArea(cBlockArea & a_Dest, int a_MinRelX, int a_MaxRelX
 	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.m_Origin.x = m_ChunkX * cChunkDef::Width + a_MinRelX;
+	a_Dest.m_Origin.y = a_MinRelY;
+	a_Dest.m_Origin.z = m_ChunkZ * cChunkDef::Width + a_MinRelZ;
 	a_Dest.SetSize(SizeX, SizeY, SizeZ, cBlockArea::baTypes | cBlockArea::baMetas);
 
 	for (int y = 0; y < SizeY; y++)
@@ -562,6 +564,31 @@ cBlockEntity * cChunkDesc::GetBlockEntity(int a_RelX, int a_RelY, int a_RelZ)
 
 
 
+void cChunkDesc::UpdateHeightmap(void)
+{
+	for (int x = 0; x < cChunkDef::Width; x++)
+	{
+		for (int z = 0; z < cChunkDef::Width; z++)
+		{
+			int Height = 0;
+			for (int y = cChunkDef::Height - 1; y > 0; y--)
+			{
+				BLOCKTYPE BlockType = GetBlockType(x, y, z);
+				if (BlockType != E_BLOCK_AIR)
+				{
+					Height = y;
+					break;
+				}
+			}  // for y
+			SetHeight(x, z, Height);
+		}  // for z
+	}  // for x
+}
+
+
+
+
+
 void cChunkDesc::CompressBlockMetas(cChunkDef::BlockNibbles & a_DestMetas)
 {
 	const NIBBLETYPE * AreaMetas = m_BlockArea.GetBlockMetas();
diff --git a/src/Generating/ChunkDesc.h b/src/Generating/ChunkDesc.h
index e130c463f..8edc2800b 100644
--- a/src/Generating/ChunkDesc.h
+++ b/src/Generating/ChunkDesc.h
@@ -30,7 +30,7 @@ class cChunkDesc
 public:
 	// tolua_end
 	
-	/// Uncompressed block metas, 1 meta per byte
+	/** Uncompressed block metas, 1 meta per byte */
 	typedef NIBBLETYPE BlockNibbleBytes[cChunkDef::NumBlocks];
 	
 	cChunkDesc(int a_ChunkX, int a_ChunkZ);
@@ -53,9 +53,11 @@ public:
 	void       SetBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockMeta);
 	NIBBLETYPE GetBlockMeta(int a_RelX, int a_RelY, int a_RelZ);
 
-	void       SetBiome(int a_RelX, int a_RelZ, int a_BiomeID);
+	void       SetBiome(int a_RelX, int a_RelZ, EMCSBiome a_BiomeID);
 	EMCSBiome  GetBiome(int a_RelX, int a_RelZ);
 
+	// These operate on the heightmap, so they could get out of sync with the data
+	// Use UpdateHeightmap() to re-sync
 	void       SetHeight(int a_RelX, int a_RelZ, int a_Height);
 	int        GetHeight(int a_RelX, int a_RelZ);
 
@@ -71,16 +73,16 @@ public:
 	void SetUseDefaultFinish(bool a_bUseDefaultFinish);
 	bool IsUsingDefaultFinish(void) const;
 
-	/// Writes the block area into the chunk, with its origin set at the specified relative coords. Area's data overwrite everything in the chunk.
+	/** Writes the block area into the chunk, with its origin set at the specified relative coords. Area's data overwrite everything in the chunk. */
 	void WriteBlockArea(const cBlockArea & a_BlockArea, int a_RelX, int a_RelY, int a_RelZ, cBlockArea::eMergeStrategy a_MergeStrategy = cBlockArea::msOverwrite);
 
-	/// Reads an area from the chunk into a cBlockArea, blocktypes and blockmetas
+	/** Reads an area from the chunk into a cBlockArea, blocktypes and blockmetas */
 	void ReadBlockArea(cBlockArea & a_Dest, int a_MinRelX, int a_MaxRelX, int a_MinRelY, int a_MaxRelY, int a_MinRelZ, int a_MaxRelZ);
 
-	/// Returns the maximum height value in the heightmap
+	/** Returns the maximum height value in the heightmap */
 	HEIGHTTYPE GetMaxHeight(void) const;
 	
-	/// Fills the relative cuboid with specified block; allows cuboid out of range of this chunk
+	/** Fills the relative cuboid with specified block; allows cuboid out of range of this chunk */
 	void FillRelCuboid(
 		int a_MinX, int a_MaxX,
 		int a_MinY, int a_MaxY,
@@ -88,7 +90,7 @@ public:
 		BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
 	);
 	
-	/// Fills the relative cuboid with specified block; allows cuboid out of range of this chunk
+	/** Fills the relative cuboid with specified block; allows cuboid out of range of this chunk */
 	void FillRelCuboid(const cCuboid & a_RelCuboid, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 	{
 		FillRelCuboid(
@@ -99,7 +101,7 @@ public:
 		);
 	}
 	
-	/// Replaces the specified src blocks in the cuboid by the dst blocks; allows cuboid out of range of this chunk
+	/** Replaces the specified src blocks in the cuboid by the dst blocks; allows cuboid out of range of this chunk */
 	void ReplaceRelCuboid(
 		int a_MinX, int a_MaxX,
 		int a_MinY, int a_MaxY,
@@ -108,7 +110,7 @@ public:
 		BLOCKTYPE a_DstType, NIBBLETYPE a_DstMeta
 	);
 	
-	/// Replaces the specified src blocks in the cuboid by the dst blocks; allows cuboid out of range of this chunk
+	/** Replaces the specified src blocks in the cuboid by the dst blocks; allows cuboid out of range of this chunk */
 	void ReplaceRelCuboid(
 		const cCuboid & a_RelCuboid,
 		BLOCKTYPE a_SrcType, NIBBLETYPE a_SrcMeta,
@@ -124,7 +126,7 @@ public:
 		);
 	}
 
-	/// Replaces the blocks in the cuboid by the dst blocks if they are considered non-floor (air, water); allows cuboid out of range of this chunk
+	/** Replaces the blocks in the cuboid by the dst blocks if they are considered non-floor (air, water); allows cuboid out of range of this chunk */
 	void FloorRelCuboid(
 		int a_MinX, int a_MaxX,
 		int a_MinY, int a_MaxY,
@@ -132,7 +134,7 @@ public:
 		BLOCKTYPE a_DstType, NIBBLETYPE a_DstMeta
 	);
 	
-	/// Replaces the blocks in the cuboid by the dst blocks if they are considered non-floor (air, water); allows cuboid out of range of this chunk
+	/** Replaces the blocks in the cuboid by the dst blocks if they are considered non-floor (air, water); allows cuboid out of range of this chunk */
 	void FloorRelCuboid(
 		const cCuboid & a_RelCuboid,
 		BLOCKTYPE a_DstType, NIBBLETYPE a_DstMeta
@@ -146,7 +148,7 @@ public:
 		);
 	}
 	
-	/// Fills the relative cuboid with specified block with a random chance; allows cuboid out of range of this chunk
+	/** Fills the relative cuboid with specified block with a random chance; allows cuboid out of range of this chunk */
 	void RandomFillRelCuboid(
 		int a_MinX, int a_MaxX,
 		int a_MinY, int a_MaxY,
@@ -155,7 +157,7 @@ public:
 		int a_RandomSeed, int a_ChanceOutOf10k
 	);
 	
-	/// Fills the relative cuboid with specified block with a random chance; allows cuboid out of range of this chunk
+	/** Fills the relative cuboid with specified block with a random chance; allows cuboid out of range of this chunk */
 	void RandomFillRelCuboid(
 		const cCuboid & a_RelCuboid, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta,
 		int a_RandomSeed, int a_ChanceOutOf10k
@@ -170,11 +172,15 @@ public:
 		);
 	}
 	
-	/// Returns the block entity at the specified coords.
-	/// If there is no block entity at those coords, tries to create one, based on the block type
-	/// If the blocktype doesn't support a block entity, returns NULL.
+	/** Returns the block entity at the specified coords.
+	If there is no block entity at those coords, tries to create one, based on the block type
+	If the blocktype doesn't support a block entity, returns NULL. */
 	cBlockEntity * GetBlockEntity(int a_RelX, int a_RelY, int a_RelZ);
 	
+	/** Updates the heightmap to match the current contents.
+	Useful for plugins when writing custom block areas into the chunk */
+	void UpdateHeightmap(void);
+	
 	// tolua_end
 	
 	// Accessors used by cChunkGenerator::Generator descendants:
@@ -187,11 +193,11 @@ public:
 	inline cEntityList &             GetEntities              (void) { return m_Entities; }
 	inline cBlockEntityList &        GetBlockEntities         (void) { return m_BlockEntities; }
 	
-	/// Compresses the metas from the BlockArea format (1 meta per byte) into regular format (2 metas per byte)
+	/** Compresses the metas from the BlockArea format (1 meta per byte) into regular format (2 metas per byte) */
 	void CompressBlockMetas(cChunkDef::BlockNibbles & a_DestMetas);
 	
 	#ifdef _DEBUG
-	/// Verifies that the heightmap corresponds to blocktype contents; if not, asserts on that column
+	/** Verifies that the heightmap corresponds to blocktype contents; if not, asserts on that column */
 	void VerifyHeightmap(void);
 	#endif  // _DEBUG
 	
diff --git a/src/Generating/ChunkGenerator.cpp b/src/Generating/ChunkGenerator.cpp
index baa5b76b8..73f0223e8 100644
--- a/src/Generating/ChunkGenerator.cpp
+++ b/src/Generating/ChunkGenerator.cpp
@@ -116,7 +116,7 @@ void cChunkGenerator::QueueGenerateChunk(int a_ChunkX, int a_ChunkY, int a_Chunk
 		// Add to queue, issue a warning if too many:
 		if (m_Queue.size() >= QUEUE_WARNING_LIMIT)
 		{
-			LOGWARN("WARNING: Adding chunk [%i, %i] to generation queue; Queue is too big! (%i)", a_ChunkX, a_ChunkZ, m_Queue.size());
+			LOGWARN("WARNING: Adding chunk [%i, %i] to generation queue; Queue is too big! (" SIZE_T_FMT ")", a_ChunkX, a_ChunkZ, m_Queue.size());
 		}
 		m_Queue.push_back(cChunkCoords(a_ChunkX, a_ChunkY, a_ChunkZ));
 	}
@@ -180,7 +180,7 @@ BLOCKTYPE cChunkGenerator::GetIniBlock(cIniFile & a_IniFile, const AString & a_S
 	BLOCKTYPE Block = BlockStringToType(BlockType);
 	if (Block < 0)
 	{
-		LOGWARN("[&s].%s Could not parse block value \"%s\". Using default: \"%s\".", a_SectionName.c_str(), a_ValueName.c_str(), BlockType.c_str(),a_Default.c_str());
+		LOGWARN("[%s].%s Could not parse block value \"%s\". Using default: \"%s\".", a_SectionName.c_str(), a_ValueName.c_str(), BlockType.c_str(),a_Default.c_str());
 		return BlockStringToType(a_Default);
 	}
 	return Block;
@@ -201,7 +201,7 @@ void cChunkGenerator::Execute(void)
 	while (!m_ShouldTerminate)
 	{
 		cCSLock Lock(m_CS);
-		while (m_Queue.size() == 0)
+		while (m_Queue.empty())
 		{
 			if ((NumChunksGenerated > 16) && (clock() - LastReportTick > CLOCKS_PER_SEC))
 			{
@@ -221,6 +221,13 @@ void cChunkGenerator::Execute(void)
 			LastReportTick = clock();
 		}
 
+		if (m_Queue.empty())
+		{
+			// Sometimes the queue remains empty
+			// If so, we can't do any front() operations on it!
+			continue;
+		}
+
 		cChunkCoords coords = m_Queue.front();		// Get next coord from queue
 		m_Queue.erase( m_Queue.begin() );	// Remove coordinate from queue
 		bool SkipEnabled = (m_Queue.size() > QUEUE_SKIP_LIMIT);
diff --git a/src/Generating/CompoGen.cpp b/src/Generating/CompoGen.cpp
index 60356fe46..578bb2481 100644
--- a/src/Generating/CompoGen.cpp
+++ b/src/Generating/CompoGen.cpp
@@ -566,7 +566,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 			m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, 0, BaseZ + INTERPOL_Z * z) /
 			256;
 	}  // for x, z - FloorLo[]
-	LinearUpscale2DArrayInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+	LinearUpscale2DArrayInPlace<17, 17, INTERPOL_X, INTERPOL_Z>(FloorLo);
 	
 	// Interpolate segments:
 	for (int Segment = 0; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -579,7 +579,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
 				m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
 				256;
 		}  // for x, z - FloorLo[]
-		LinearUpscale2DArrayInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+		LinearUpscale2DArrayInPlace<17, 17, INTERPOL_X, INTERPOL_Z>(FloorHi);
 		
 		// Interpolate between FloorLo and FloorHi:
 		for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
diff --git a/src/Generating/ComposableGenerator.cpp b/src/Generating/ComposableGenerator.cpp
index cfa7e9c6f..2e886336f 100644
--- a/src/Generating/ComposableGenerator.cpp
+++ b/src/Generating/ComposableGenerator.cpp
@@ -21,7 +21,9 @@
 #include "DistortedHeightmap.h"
 #include "EndGen.h"
 #include "MineShafts.h"
+#include "NetherFortGen.h"
 #include "Noise3DGenerator.h"
+#include "POCPieceGenerator.h"
 #include "Ravines.h"
 
 
@@ -133,11 +135,6 @@ cComposableGenerator::~cComposableGenerator()
 		delete *itr;
 	}
 	m_FinishGens.clear();
-	for (cStructureGenList::const_iterator itr = m_StructureGens.begin(); itr != m_StructureGens.end(); ++itr)
-	{
-		delete *itr;
-	}
-	m_StructureGens.clear();
 
 	delete m_CompositionGen;
 	m_CompositionGen = NULL;
@@ -164,7 +161,6 @@ void cComposableGenerator::Initialize(cIniFile & a_IniFile)
 	InitBiomeGen(a_IniFile);
 	InitHeightGen(a_IniFile);
 	InitCompositionGen(a_IniFile);
-	InitStructureGens(a_IniFile);
 	InitFinishGens(a_IniFile);
 }
 
@@ -196,25 +192,25 @@ void cComposableGenerator::DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a
 		m_HeightGen->GenHeightMap(a_ChunkX, a_ChunkZ, a_ChunkDesc.GetHeightMap());
 	}
 	
+	bool ShouldUpdateHeightmap = false;
 	if (a_ChunkDesc.IsUsingDefaultComposition())
 	{
 		m_CompositionGen->ComposeTerrain(a_ChunkDesc);
+		ShouldUpdateHeightmap = true;
 	}
 
-	if (a_ChunkDesc.IsUsingDefaultStructures())
-	{	
-		for (cStructureGenList::iterator itr = m_StructureGens.begin(); itr != m_StructureGens.end(); ++itr)
-		{
-			(*itr)->GenStructures(a_ChunkDesc);
-		}   // for itr - m_StructureGens[]
-	}
-	
 	if (a_ChunkDesc.IsUsingDefaultFinish())
 	{
 		for (cFinishGenList::iterator itr = m_FinishGens.begin(); itr != m_FinishGens.end(); ++itr)
 		{
 			(*itr)->GenFinish(a_ChunkDesc);
 		}  // for itr - m_FinishGens[]
+		ShouldUpdateHeightmap = true;
+	}
+	
+	if (ShouldUpdateHeightmap)
+	{
+		a_ChunkDesc.UpdateHeightmap();
 	}
 }
 
@@ -290,35 +286,69 @@ void cComposableGenerator::InitCompositionGen(cIniFile & a_IniFile)
 
 
 
-void cComposableGenerator::InitStructureGens(cIniFile & a_IniFile)
+void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 {
-	AString Structures = a_IniFile.GetValueSet("Generator", "Structures", "Ravines, WormNestCaves, WaterLakes, LavaLakes, OreNests, Trees");
-
 	int Seed = m_ChunkGenerator.GetSeed();
-	AStringVector Str = StringSplitAndTrim(Structures, ",");
+	eDimension Dimension = StringToDimension(a_IniFile.GetValue("General", "Dimension", "Overworld"));
+
+	// Older configuration used "Structures" in addition to "Finishers"; we don't distinguish between the two anymore (#398)
+	// Therefore, we load Structures from the ini file for compatibility, but move its contents over to Finishers:
+	AString Structures = a_IniFile.GetValue("Generator", "Structures", "");
+	AString Finishers = a_IniFile.GetValueSet("Generator", "Finishers", "Ravines, WormNestCaves, WaterLakes, LavaLakes, OreNests, Trees, SprinkleFoliage, Ice, Snow, Lilypads, BottomLava, DeadBushes, PreSimulator");
+	if (!Structures.empty())
+	{
+		LOGINFO("[Generator].Structures is deprecated, moving the contents to [Generator].Finishers.");
+		// Structures used to generate before Finishers, so place them first:
+		Structures.append(", ");
+		Finishers = Structures + Finishers;
+		a_IniFile.SetValue("Generator", "Finishers", Finishers);
+	}
+	a_IniFile.DeleteValue("Generator", "Structures");
+
+	// Create all requested finishers:
+	AStringVector Str = StringSplitAndTrim(Finishers, ",");
 	for (AStringVector::const_iterator itr = Str.begin(); itr != Str.end(); ++itr)
 	{
-		if (NoCaseCompare(*itr, "DualRidgeCaves") == 0)
+		// Finishers, alpha-sorted:
+		if (NoCaseCompare(*itr, "BottomLava") == 0)
 		{
-			float Threshold = (float)a_IniFile.GetValueSetF("Generator", "DualRidgeCavesThreshold", 0.3);
-			m_StructureGens.push_back(new cStructGenDualRidgeCaves(Seed, Threshold));
+			int DefaultBottomLavaLevel = (Dimension == dimNether) ? 30 : 10;
+			int BottomLavaLevel = a_IniFile.GetValueSetI("Generator", "BottomLavaLevel", DefaultBottomLavaLevel);
+			m_FinishGens.push_back(new cFinishGenBottomLava(BottomLavaLevel));
+		}
+		else if (NoCaseCompare(*itr, "DeadBushes") == 0)
+		{
+			m_FinishGens.push_back(new cFinishGenSingleBiomeSingleTopBlock(Seed, E_BLOCK_DEAD_BUSH, biDesert, 2, E_BLOCK_SAND, E_BLOCK_SAND));
 		}
 		else if (NoCaseCompare(*itr, "DirectOverhangs") == 0)
 		{
-			m_StructureGens.push_back(new cStructGenDirectOverhangs(Seed));
+			m_FinishGens.push_back(new cStructGenDirectOverhangs(Seed));
 		}
 		else if (NoCaseCompare(*itr, "DistortedMembraneOverhangs") == 0)
 		{
-			m_StructureGens.push_back(new cStructGenDistortedMembraneOverhangs(Seed));
+			m_FinishGens.push_back(new cStructGenDistortedMembraneOverhangs(Seed));
+		}
+		else if (NoCaseCompare(*itr, "DualRidgeCaves") == 0)
+		{
+			float Threshold = (float)a_IniFile.GetValueSetF("Generator", "DualRidgeCavesThreshold", 0.3);
+			m_FinishGens.push_back(new cStructGenDualRidgeCaves(Seed, Threshold));
+		}
+		else if (NoCaseCompare(*itr, "Ice") == 0)
+		{
+			m_FinishGens.push_back(new cFinishGenIce);
 		}
 		else if (NoCaseCompare(*itr, "LavaLakes") == 0)
 		{
 			int Probability = a_IniFile.GetValueSetI("Generator", "LavaLakesProbability", 10);
-			m_StructureGens.push_back(new cStructGenLakes(Seed * 5 + 16873, E_BLOCK_STATIONARY_LAVA, *m_HeightGen, Probability));
+			m_FinishGens.push_back(new cStructGenLakes(Seed * 5 + 16873, E_BLOCK_STATIONARY_LAVA, *m_HeightGen, Probability));
+		}
+		else if (NoCaseCompare(*itr, "LavaSprings") == 0)
+		{
+			m_FinishGens.push_back(new cFinishGenFluidSprings(Seed, E_BLOCK_LAVA, a_IniFile, Dimension));
 		}
 		else if (NoCaseCompare(*itr, "MarbleCaves") == 0)
 		{
-			m_StructureGens.push_back(new cStructGenMarbleCaves(Seed));
+			m_FinishGens.push_back(new cStructGenMarbleCaves(Seed));
 		}
 		else if (NoCaseCompare(*itr, "MineShafts") == 0)
 		{
@@ -327,94 +357,69 @@ void cComposableGenerator::InitStructureGens(cIniFile & a_IniFile)
 			int ChanceCorridor  = a_IniFile.GetValueSetI("Generator", "MineShaftsChanceCorridor",  600);
 			int ChanceCrossing  = a_IniFile.GetValueSetI("Generator", "MineShaftsChanceCrossing",  200);
 			int ChanceStaircase = a_IniFile.GetValueSetI("Generator", "MineShaftsChanceStaircase", 200);
-			m_StructureGens.push_back(new cStructGenMineShafts(
-				Seed, GridSize, MaxSystemSize, 
+			m_FinishGens.push_back(new cStructGenMineShafts(
+				Seed, GridSize, MaxSystemSize,
 				ChanceCorridor, ChanceCrossing, ChanceStaircase
 			));
 		}
-		else if (NoCaseCompare(*itr, "OreNests") == 0)
-		{
-			m_StructureGens.push_back(new cStructGenOreNests(Seed));
-		}
-		else if (NoCaseCompare(*itr, "Ravines") == 0)
-		{
-			m_StructureGens.push_back(new cStructGenRavines(Seed, 128));
-		}
-		else if (NoCaseCompare(*itr, "Trees") == 0)
+		else if (NoCaseCompare(*itr, "Lilypads") == 0)
 		{
-			m_StructureGens.push_back(new cStructGenTrees(Seed, m_BiomeGen, m_HeightGen, m_CompositionGen));
+			m_FinishGens.push_back(new cFinishGenSingleBiomeSingleTopBlock(Seed, E_BLOCK_LILY_PAD, biSwampland, 4, E_BLOCK_WATER, E_BLOCK_STATIONARY_WATER));
 		}
-		else if (NoCaseCompare(*itr, "WaterLakes") == 0)
+		else if (NoCaseCompare(*itr, "NetherClumpFoliage") == 0)
 		{
-			int Probability = a_IniFile.GetValueSetI("Generator", "WaterLakesProbability", 25);
-			m_StructureGens.push_back(new cStructGenLakes(Seed * 3 + 652, E_BLOCK_STATIONARY_WATER, *m_HeightGen, Probability));
+			m_FinishGens.push_back(new cFinishGenNetherClumpFoliage(Seed));
 		}
-		else if (NoCaseCompare(*itr, "WormNestCaves") == 0)
+		else if (NoCaseCompare(*itr, "NetherForts") == 0)
 		{
-			m_StructureGens.push_back(new cStructGenWormNestCaves(Seed));
+			int GridSize = a_IniFile.GetValueSetI("Generator", "NetherFortsGridSize", 512);
+			int MaxDepth = a_IniFile.GetValueSetI("Generator", "NetherFortsMaxDepth", 12);
+			m_FinishGens.push_back(new cNetherFortGen(Seed, GridSize, MaxDepth));
 		}
-		else
+		else if (NoCaseCompare(*itr, "OreNests") == 0)
 		{
-			LOGWARNING("Unknown structure generator: \"%s\". Ignoring.", itr->c_str());
+			m_FinishGens.push_back(new cStructGenOreNests(Seed));
 		}
-	}  // for itr - Str[]
-}
-
-
-
-
-
-void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
-{
-	int Seed = m_ChunkGenerator.GetSeed();
-	eDimension Dimension = StringToDimension(a_IniFile.GetValue("General", "Dimension", "Overworld"));
-
-	AString Finishers = a_IniFile.GetValueSet("Generator", "Finishers", "SprinkleFoliage,Ice,Snow,Lilypads,BottomLava,DeadBushes,PreSimulator");
-	AStringVector Str = StringSplitAndTrim(Finishers, ",");
-	for (AStringVector::const_iterator itr = Str.begin(); itr != Str.end(); ++itr)
-	{
-		// Finishers, alpha-sorted:
-		if (NoCaseCompare(*itr, "BottomLava") == 0)
+		else if (NoCaseCompare(*itr, "POCPieces") == 0)
 		{
-			int DefaultBottomLavaLevel = (Dimension == dimNether) ? 30 : 10;
-			int BottomLavaLevel = a_IniFile.GetValueSetI("Generator", "BottomLavaLevel", DefaultBottomLavaLevel);
-			m_FinishGens.push_back(new cFinishGenBottomLava(BottomLavaLevel));
+			m_FinishGens.push_back(new cPOCPieceGenerator(Seed));
 		}
-		else if (NoCaseCompare(*itr, "DeadBushes") == 0)
+		else if (NoCaseCompare(*itr, "PreSimulator") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenSingleBiomeSingleTopBlock(Seed, E_BLOCK_DEAD_BUSH, biDesert, 2, E_BLOCK_SAND, E_BLOCK_SAND));
+			m_FinishGens.push_back(new cFinishGenPreSimulator);
 		}
-		else if (NoCaseCompare(*itr, "Ice") == 0)
+		else if (NoCaseCompare(*itr, "Ravines") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenIce);
+			m_FinishGens.push_back(new cStructGenRavines(Seed, 128));
 		}
-		else if (NoCaseCompare(*itr, "LavaSprings") == 0)
+		else if (NoCaseCompare(*itr, "Snow") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenFluidSprings(Seed, E_BLOCK_LAVA, a_IniFile, Dimension));
+			m_FinishGens.push_back(new cFinishGenSnow);
 		}
-		else if (NoCaseCompare(*itr, "Lilypads") == 0)
+		else if (NoCaseCompare(*itr, "SprinkleFoliage") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenSingleBiomeSingleTopBlock(Seed, E_BLOCK_LILY_PAD, biSwampland, 4, E_BLOCK_WATER, E_BLOCK_STATIONARY_WATER));
+			m_FinishGens.push_back(new cFinishGenSprinkleFoliage(Seed));
 		}
-		else if (NoCaseCompare(*itr, "NetherClumpFoliage") == 0)
+		else if (NoCaseCompare(*itr, "Trees") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenNetherClumpFoliage(Seed));
+			m_FinishGens.push_back(new cStructGenTrees(Seed, m_BiomeGen, m_HeightGen, m_CompositionGen));
 		}
-		else if (NoCaseCompare(*itr, "PreSimulator") == 0)
+		else if (NoCaseCompare(*itr, "WaterLakes") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenPreSimulator);
+			int Probability = a_IniFile.GetValueSetI("Generator", "WaterLakesProbability", 25);
+			m_FinishGens.push_back(new cStructGenLakes(Seed * 3 + 652, E_BLOCK_STATIONARY_WATER, *m_HeightGen, Probability));
 		}
-		else if (NoCaseCompare(*itr, "Snow") == 0)
+		else if (NoCaseCompare(*itr, "WaterSprings") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenSnow);
+			m_FinishGens.push_back(new cFinishGenFluidSprings(Seed, E_BLOCK_WATER, a_IniFile, Dimension));
 		}
-		else if (NoCaseCompare(*itr, "SprinkleFoliage") == 0)
+		else if (NoCaseCompare(*itr, "WormNestCaves") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenSprinkleFoliage(Seed));
+			m_FinishGens.push_back(new cStructGenWormNestCaves(Seed));
 		}
-		else if (NoCaseCompare(*itr, "WaterSprings") == 0)
+		else
 		{
-			m_FinishGens.push_back(new cFinishGenFluidSprings(Seed, E_BLOCK_WATER, a_IniFile, Dimension));
+			LOGWARNING("Unknown Finisher in the [Generator] section: \"%s\". Ignoring.", itr->c_str());
 		}
 	}  // for itr - Str[]
 }
diff --git a/src/Generating/ComposableGenerator.h b/src/Generating/ComposableGenerator.h
index 29add0636..6b7627d2e 100644
--- a/src/Generating/ComposableGenerator.h
+++ b/src/Generating/ComposableGenerator.h
@@ -43,16 +43,16 @@ class cBiomeGen
 public:
 	virtual ~cBiomeGen() {}  // Force a virtual destructor in descendants
 	
-	/// Generates biomes for the given chunk
+	/** Generates biomes for the given chunk */
 	virtual void GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) = 0;
 	
-	/// Reads parameters from the ini file, prepares generator for use.
+	/** Reads parameters from the ini file, prepares generator for use. */
 	virtual void InitializeBiomeGen(cIniFile & a_IniFile) {}
 
-	/// Creates the correct BiomeGen descendant based on the ini file settings and the seed provided.
-	/// a_CacheOffByDefault gets set to whether the cache should be disabled by default
-	/// Used in BiomeVisualiser, too.
-	/// Implemented in BioGen.cpp!
+	/** Creates the correct BiomeGen descendant based on the ini file settings and the seed provided.
+	a_CacheOffByDefault gets set to whether the cache should be disabled by default.
+	Used in BiomeVisualiser, too.
+	Implemented in BioGen.cpp! */
 	static cBiomeGen * CreateBiomeGen(cIniFile & a_IniFile, int a_Seed, bool & a_CacheOffByDefault);
 
 } ;
@@ -72,10 +72,10 @@ class cTerrainHeightGen
 public:
 	virtual ~cTerrainHeightGen() {}  // Force a virtual destructor in descendants
 	
-	/// Generates heightmap for the given chunk
+	/** Generates heightmap for the given chunk */
 	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) = 0;
 	
-	/// Reads parameters from the ini file, prepares generator for use.
+	/** Reads parameters from the ini file, prepares generator for use. */
 	virtual void InitializeHeightGen(cIniFile & a_IniFile) {}
 	
 	/** Creates the correct TerrainHeightGen descendant based on the ini file settings and the seed provided.
@@ -102,7 +102,7 @@ public:
 	
 	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) = 0;
 	
-	/// Reads parameters from the ini file, prepares generator for use.
+	/** Reads parameters from the ini file, prepares generator for use. */
 	virtual void InitializeCompoGen(cIniFile & a_IniFile) {}
 	
 	/** Creates the correct TerrainCompositionGen descendant based on the ini file settings and the seed provided.
@@ -116,28 +116,12 @@ public:
 
 
 
-/** The interface that a structure generator must implement
-Structures are generated after the terrain composition took place. It should modify the blocktype data to account
-for whatever structures the generator is generating.
-Note that ores are considered structures too, at least from the interface point of view.
-Also note that a worldgenerator may contain multiple structure generators, one for each type of structure
-*/
-class cStructureGen
-{
-public:
-	virtual ~cStructureGen() {}  // Force a virtual destructor in descendants
-	
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) = 0;
-} ;
-
-typedef std::list<cStructureGen *> cStructureGenList;
-
-
-
-
-
 /** The interface that a finisher must implement
-Finisher implements small additions after all structures have been generated.
+Finisher implements changes to the chunk after the rough terrain has been generated.
+Examples of finishers are trees, snow, ore, lilypads and others.
+Note that a worldgenerator may contain multiple finishers.
+Also note that previously we used to distinguish between a structuregen and a finisher; this distinction is
+no longer relevant, all structure generators are considered finishers now (#398)
 */
 class cFinishGen
 {
@@ -171,7 +155,6 @@ protected:
 	cBiomeGen *              m_BiomeGen;
 	cTerrainHeightGen *      m_HeightGen;
 	cTerrainCompositionGen * m_CompositionGen;
-	cStructureGenList        m_StructureGens;
 	cFinishGenList           m_FinishGens;
 	
 	// Generators underlying the caches:
@@ -180,19 +163,16 @@ protected:
 	cTerrainCompositionGen * m_UnderlyingCompositionGen;
 	
 	
-	/// Reads the biome gen settings from the ini and initializes m_BiomeGen accordingly
+	/** Reads the biome gen settings from the ini and initializes m_BiomeGen accordingly */
 	void InitBiomeGen(cIniFile & a_IniFile);
 	
-	/// Reads the HeightGen settings from the ini and initializes m_HeightGen accordingly
+	/** Reads the HeightGen settings from the ini and initializes m_HeightGen accordingly */
 	void InitHeightGen(cIniFile & a_IniFile);
 	
-	/// Reads the CompositionGen settings from the ini and initializes m_CompositionGen accordingly
+	/** Reads the CompositionGen settings from the ini and initializes m_CompositionGen accordingly */
 	void InitCompositionGen(cIniFile & a_IniFile);
 	
-	/// Reads the structures to generate from the ini and initializes m_StructureGens accordingly
-	void InitStructureGens(cIniFile & a_IniFile);
-	
-	/// Reads the finishers from the ini and initializes m_FinishGens accordingly
+	/** Reads the finishers from the ini and initializes m_FinishGens accordingly */
 	void InitFinishGens(cIniFile & a_IniFile);
 } ;
 
diff --git a/src/Generating/FinishGen.cpp b/src/Generating/FinishGen.cpp
index 02045f76a..f2d66af70 100644
--- a/src/Generating/FinishGen.cpp
+++ b/src/Generating/FinishGen.cpp
@@ -88,7 +88,7 @@ void cFinishGenNetherClumpFoliage::GenFinish(cChunkDesc & a_ChunkDesc)
 		{
 			continue;
 		}
-		if (!g_BlockIsSolid[a_ChunkDesc.GetBlockType(PosX, y - 1, PosZ)])  // Only place on solid blocks
+		if (!cBlockInfo::IsSolid(a_ChunkDesc.GetBlockType(PosX, y - 1, PosZ)))  // Only place on solid blocks
 		{
 			continue;
 		}
@@ -131,7 +131,7 @@ void cFinishGenNetherClumpFoliage::TryPlaceClump(cChunkDesc & a_ChunkDesc, int a
 				}
 
 				BLOCKTYPE BlockBelow = a_ChunkDesc.GetBlockType(x, y - 1, z);
-				if (!g_BlockIsSolid[BlockBelow])  // Only place on solid blocks
+				if (!cBlockInfo::IsSolid(BlockBelow))  // Only place on solid blocks
 				{
 					continue;
 				}
@@ -329,7 +329,7 @@ void cFinishGenSnow::GenFinish(cChunkDesc & a_ChunkDesc)
 				case biFrozenOcean:
 				{
 					int Height = a_ChunkDesc.GetHeight(x, z);
-					if (g_BlockIsSnowable[a_ChunkDesc.GetBlockType(x, Height, z)])
+					if (cBlockInfo::IsSnowable(a_ChunkDesc.GetBlockType(x, Height, z)))
 					{
 						a_ChunkDesc.SetBlockType(x, Height + 1, z, E_BLOCK_SNOW);
 						a_ChunkDesc.SetHeight(x, z, Height + 1);
diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp
index 10710b4a1..3621421c2 100644
--- a/src/Generating/HeiGen.cpp
+++ b/src/Generating/HeiGen.cpp
@@ -428,7 +428,7 @@ void cHeiGenBiomal::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMa
 			Height[x + 17 * z] = GetHeightAt(x, z, a_ChunkX, a_ChunkZ, Biomes);
 		}
 	}
-	LinearUpscale2DArrayInPlace(Height, 17, 17, STEPX, STEPZ);
+	LinearUpscale2DArrayInPlace<17, 17, STEPX, STEPZ>(Height);
 	
 	// Copy into the heightmap
 	for (int z = 0; z < cChunkDef::Width; z++)
diff --git a/src/Generating/MineShafts.cpp b/src/Generating/MineShafts.cpp
index cc39cef7b..231295c3f 100644
--- a/src/Generating/MineShafts.cpp
+++ b/src/Generating/MineShafts.cpp
@@ -69,6 +69,8 @@ public:
 		m_BoundingBox(a_BoundingBox)
 	{
 	}
+	
+	virtual ~cMineShaft() {}
 
 	/// Returns true if this mineshaft intersects the specified cuboid
 	bool DoesIntersect(const cCuboid & a_Other)
@@ -1338,7 +1340,7 @@ void cStructGenMineShafts::GetMineShaftSystemsForChunk(
 	BaseX -= NEIGHBORHOOD_SIZE / 2;
 	BaseZ -= NEIGHBORHOOD_SIZE / 2;
 
-	// Walk the cache, move each cave system that we want into a_Caves:
+	// Walk the cache, move each cave system that we want into a_Mineshafts:
 	int StartX = BaseX * m_GridSize;
 	int EndX = (BaseX + NEIGHBORHOOD_SIZE + 1) * m_GridSize;
 	int StartZ = BaseZ * m_GridSize;
@@ -1407,7 +1409,7 @@ void cStructGenMineShafts::GetMineShaftSystemsForChunk(
 
 
 
-void cStructGenMineShafts::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenMineShafts::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
diff --git a/src/Generating/MineShafts.h b/src/Generating/MineShafts.h
index c53d3bc53..ba32e75ad 100644
--- a/src/Generating/MineShafts.h
+++ b/src/Generating/MineShafts.h
@@ -17,7 +17,7 @@
 
 
 class cStructGenMineShafts :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenMineShafts(
@@ -52,8 +52,8 @@ protected:
 	*/
 	void GetMineShaftSystemsForChunk(int a_ChunkX, int a_ChunkZ, cMineShaftSystems & a_MineShaftSystems);
 
-	// cStructureGen overrides:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen overrides:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
diff --git a/src/Generating/NetherFortGen.cpp b/src/Generating/NetherFortGen.cpp
new file mode 100644
index 000000000..02779a8a3
--- /dev/null
+++ b/src/Generating/NetherFortGen.cpp
@@ -0,0 +1,275 @@
+
+// NetherFortGen.cpp
+
+// Implements the cNetherFortGen class representing the nether fortress generator
+
+#include "Globals.h"
+#include "NetherFortGen.h"
+#include "Prefabs/NetherFortPrefabs.h"
+
+
+
+
+
+static const int NEIGHBORHOOD_SIZE = 3;
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cNetherFortGen::cNetherFort:
+
+class cNetherFortGen::cNetherFort
+{
+public:
+	cNetherFortGen & m_ParentGen;
+	int m_BlockX, m_BlockZ;
+	int m_GridSize;
+	int m_Seed;
+	cPlacedPieces m_Pieces;
+
+
+	cNetherFort(cNetherFortGen & a_ParentGen, int a_BlockX, int a_BlockZ, int a_GridSize, int a_MaxDepth, int a_Seed) :
+		m_ParentGen(a_ParentGen),
+		m_BlockX(a_BlockX),
+		m_BlockZ(a_BlockZ),
+		m_GridSize(a_GridSize),
+		m_Seed(a_Seed)
+	{
+		// TODO: Proper Y-coord placement
+		int BlockY = 64;
+		
+		// Generate pieces:
+		for (int i = 0; m_Pieces.size() < (size_t)(a_MaxDepth * a_MaxDepth / 8 + a_MaxDepth); i++)
+		{
+			cBFSPieceGenerator pg(m_ParentGen, a_Seed + i);
+			pg.PlacePieces(a_BlockX, BlockY, a_BlockZ, a_MaxDepth, m_Pieces);
+		}
+	}
+
+	
+	~cNetherFort()
+	{
+		cPieceGenerator::FreePieces(m_Pieces);
+	}
+	
+		
+	/** Carves the system into the chunk data */
+	void ProcessChunk(cChunkDesc & a_Chunk)
+	{
+		for (cPlacedPieces::const_iterator itr = m_Pieces.begin(), end = m_Pieces.end(); itr != end; ++itr)
+		{
+			const cPrefab & Prefab = (const cPrefab &)((*itr)->GetPiece());
+			Prefab.Draw(a_Chunk, *itr);
+		}  // for itr - m_PlacedPieces[]
+	}
+};
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cNetherFortGen:
+
+cNetherFortGen::cNetherFortGen(int a_Seed, int a_GridSize, int a_MaxDepth) :
+	m_Seed(a_Seed),
+	m_Noise(a_Seed),
+	m_GridSize(a_GridSize),
+	m_MaxDepth(a_MaxDepth)
+{
+	// Initialize the prefabs:
+	for (size_t i = 0; i < g_NetherFortPrefabs1Count; i++)
+	{
+		cPrefab * Prefab = new cPrefab(g_NetherFortPrefabs1[i]);
+		m_AllPieces.push_back(Prefab);
+		if (Prefab->HasConnectorType(0))
+		{
+			m_OuterPieces.push_back(Prefab);
+		}
+		if (Prefab->HasConnectorType(1))
+		{
+			m_InnerPieces.push_back(Prefab);
+		}
+	}
+	
+	// Initialize the starting piece prefabs:
+	for (size_t i = 0; i < g_NetherFortStartingPrefabs1Count; i++)
+	{
+		m_StartingPieces.push_back(new cPrefab(g_NetherFortStartingPrefabs1[i]));
+	}
+
+	// DEBUG: Try one round of placement:
+	cPlacedPieces Pieces;
+	cBFSPieceGenerator pg(*this, a_Seed);
+	pg.PlacePieces(0, 64, 0, a_MaxDepth, Pieces);
+}
+
+
+
+
+
+cNetherFortGen::~cNetherFortGen()
+{
+	ClearCache();
+	for (cPieces::iterator itr = m_AllPieces.begin(), end = m_AllPieces.end(); itr != end; ++itr)
+	{
+		delete *itr;
+	}  // for itr - m_AllPieces[]
+	m_AllPieces.clear();
+}
+
+
+
+
+
+void cNetherFortGen::ClearCache(void)
+{
+	// TODO
+}
+
+
+
+
+
+void cNetherFortGen::GetFortsForChunk(int a_ChunkX, int a_ChunkZ, cNetherForts & a_Forts)
+{
+	int BaseX = a_ChunkX * cChunkDef::Width / m_GridSize;
+	int BaseZ = a_ChunkZ * cChunkDef::Width / m_GridSize;
+	if (BaseX < 0)
+	{
+		--BaseX;
+	}
+	if (BaseZ < 0)
+	{
+		--BaseZ;
+	}
+	BaseX -= NEIGHBORHOOD_SIZE / 2;
+	BaseZ -= NEIGHBORHOOD_SIZE / 2;
+
+	// Walk the cache, move each cave system that we want into a_Forts:
+	int StartX = BaseX * m_GridSize;
+	int EndX = (BaseX + NEIGHBORHOOD_SIZE + 1) * m_GridSize;
+	int StartZ = BaseZ * m_GridSize;
+	int EndZ = (BaseZ + NEIGHBORHOOD_SIZE + 1) * m_GridSize;
+	for (cNetherForts::iterator itr = m_Cache.begin(), end = m_Cache.end(); itr != end;)
+	{
+		if (
+			((*itr)->m_BlockX >= StartX) && ((*itr)->m_BlockX < EndX) &&
+			((*itr)->m_BlockZ >= StartZ) && ((*itr)->m_BlockZ < EndZ)
+		)
+		{
+			// want
+			a_Forts.push_back(*itr);
+			itr = m_Cache.erase(itr);
+		}
+		else
+		{
+			// don't want
+			++itr;
+		}
+	}  // for itr - m_Cache[]
+
+	// Create those forts that haven't been in the cache:
+	for (int x = 0; x < NEIGHBORHOOD_SIZE; x++)
+	{
+		int RealX = (BaseX + x) * m_GridSize;
+		for (int z = 0; z < NEIGHBORHOOD_SIZE; z++)
+		{
+			int RealZ = (BaseZ + z) * m_GridSize;
+			bool Found = false;
+			for (cNetherForts::const_iterator itr = a_Forts.begin(), end = a_Forts.end(); itr != end; ++itr)
+			{
+				if (((*itr)->m_BlockX == RealX) && ((*itr)->m_BlockZ == RealZ))
+				{
+					Found = true;
+					break;
+				}
+			}  // for itr - a_Mineshafts
+			if (!Found)
+			{
+				a_Forts.push_back(new cNetherFort(*this, RealX, RealZ, m_GridSize, m_MaxDepth, m_Seed));
+			}
+		}  // for z
+	}  // for x
+
+	// Copy a_Forts into m_Cache to the beginning:
+	cNetherForts FortsCopy (a_Forts);
+	m_Cache.splice(m_Cache.begin(), FortsCopy, FortsCopy.begin(), FortsCopy.end());
+
+	// Trim the cache if it's too long:
+	if (m_Cache.size() > 100)
+	{
+		cNetherForts::iterator itr = m_Cache.begin();
+		std::advance(itr, 100);
+		for (cNetherForts::iterator end = m_Cache.end(); itr != end; ++itr)
+		{
+			delete *itr;
+		}
+		itr = m_Cache.begin();
+		std::advance(itr, 100);
+		m_Cache.erase(itr, m_Cache.end());
+	}
+}
+
+
+
+
+
+void cNetherFortGen::GenFinish(cChunkDesc & a_ChunkDesc)
+{
+	int ChunkX = a_ChunkDesc.GetChunkX();
+	int ChunkZ = a_ChunkDesc.GetChunkZ();
+	cNetherForts Forts;
+	GetFortsForChunk(ChunkX, ChunkZ, Forts);
+	for (cNetherForts::const_iterator itr = Forts.begin(); itr != Forts.end(); ++itr)
+	{
+		(*itr)->ProcessChunk(a_ChunkDesc);
+	}  // for itr - Forts[]
+}
+
+
+
+
+
+cPieces cNetherFortGen::GetPiecesWithConnector(int a_ConnectorType)
+{
+	switch (a_ConnectorType)
+	{
+		case 0: return m_OuterPieces;
+		case 1: return m_InnerPieces;
+		default: return cPieces();
+	}
+}
+
+
+
+
+
+cPieces cNetherFortGen::GetStartingPieces(void)
+{
+	return m_StartingPieces;
+}
+
+
+
+
+
+void cNetherFortGen::PiecePlaced(const cPiece & a_Piece)
+{
+	UNUSED(a_Piece);
+}
+
+
+
+
+
+void cNetherFortGen::Reset(void)
+{
+	// Nothing needed
+}
+
+
+
+
diff --git a/src/Generating/NetherFortGen.h b/src/Generating/NetherFortGen.h
new file mode 100644
index 000000000..10ba01396
--- /dev/null
+++ b/src/Generating/NetherFortGen.h
@@ -0,0 +1,86 @@
+
+// NetherFortGen.h
+
+// Declares the cNetherFortGen class representing the nether fortress generator
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+#include "PieceGenerator.h"
+
+
+
+
+
+class cNetherFortGen :
+	public cFinishGen,
+	public cPiecePool
+{
+public:
+	cNetherFortGen(int a_Seed, int a_GridSize, int a_MaxDepth);
+	
+	virtual ~cNetherFortGen();
+	
+protected:
+	class cNetherFort;  // fwd: NetherFortGen.cpp
+	typedef std::list<cNetherFort *> cNetherForts;
+	
+	
+	/** The seed used for generating*/
+	int m_Seed;
+	
+	/** The noise used for generating */
+	cNoise m_Noise;
+	
+	/** Average spacing between the fortresses*/
+	int m_GridSize;
+	
+	/** Maximum depth of the piece-generator tree */
+	int m_MaxDepth;
+
+	/** Cache of the most recently used systems. MoveToFront used. */
+	cNetherForts m_Cache;
+	
+	/** All the pieces that are allowed for building.
+	This is the list that's used for memory allocation and deallocation for the pieces. */
+	cPieces m_AllPieces;
+	
+	/** The pieces that are used as starting pieces.
+	This list is not shared and the pieces need deallocation. */
+	cPieces m_StartingPieces;
+	
+	/** The pieces that have an "outer" connector.
+	The pieces are copies out of m_AllPieces and shouldn't be ever delete-d. */
+	cPieces m_OuterPieces;
+
+	/** The pieces that have an "inner" connector.
+	The pieces are copies out of m_AllPieces and shouldn't be ever delete-d. */
+	cPieces m_InnerPieces;
+
+
+	/** Clears everything from the cache.
+	Also invalidates the forst returned by GetFortsForChunk(). */
+	void ClearCache(void);
+	
+	/** Returns all forts that *may* intersect the given chunk.
+	The returned forts live within m_Cache.They are valid until the next call
+	to this function (which may delete some of the pointers).	*/
+	void GetFortsForChunk(int a_ChunkX, int a_ChunkZ, cNetherForts & a_Forts);
+
+	// cFinishGen overrides:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+	
+	// cPiecePool overrides:
+	virtual cPieces GetPiecesWithConnector(int a_ConnectorType) override;
+	virtual cPieces GetStartingPieces(void) override;
+	virtual void PiecePlaced(const cPiece & a_Piece) override;
+	virtual void Reset(void) override;
+} ;
+
+
+
+
diff --git a/src/Generating/Noise3DGenerator.cpp b/src/Generating/Noise3DGenerator.cpp
index afa40c647..15a588d45 100644
--- a/src/Generating/Noise3DGenerator.cpp
+++ b/src/Generating/Noise3DGenerator.cpp
@@ -420,7 +420,7 @@ void cNoise3DComposable::GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ)
 			}
 		}
 		// Linear-interpolate this XZ floor:
-		LinearUpscale2DArrayInPlace(CurFloor, 17, 17, UPSCALE_X, UPSCALE_Z);
+		LinearUpscale2DArrayInPlace<17, 17, UPSCALE_X, UPSCALE_Z>(CurFloor);
 	}
 
 	// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis
diff --git a/src/Generating/POCPieceGenerator.cpp b/src/Generating/POCPieceGenerator.cpp
new file mode 100644
index 000000000..9ed4b565e
--- /dev/null
+++ b/src/Generating/POCPieceGenerator.cpp
@@ -0,0 +1,270 @@
+
+// POCPieceGenerator.cpp
+
+// Implements the cPOCPieceGenerator class representing a Proof-Of_Concept structure generator using the cPieceGenerator technique
+// The generator generates a maze of rooms at {0, 50, 0}
+
+#include "Globals.h"
+#include "POCPieceGenerator.h"
+#include "ChunkDesc.h"
+
+
+
+
+
+/** POC pieces are simple boxes that have connectors in the middle of their walls.
+Each wall has one connector, there are 3 connector types that get assigned semi-randomly.
+The piece also knows how to imprint itself in a cChunkDesc, each piece has a different color glass
+and each connector is uses a different color wool frame. */
+class cPOCPiece :
+	public cPiece
+{
+public:
+	cPOCPiece(int a_SizeXZ, int a_Height) :
+		m_SizeXZ(a_SizeXZ),
+		m_Height(a_Height)
+	{
+		m_Connectors.push_back(cConnector(m_SizeXZ / 2, a_Height / 2, 0,            0,            BLOCK_FACE_ZM));
+		m_Connectors.push_back(cConnector(m_SizeXZ / 2, a_Height / 2, m_SizeXZ - 1, 1,            BLOCK_FACE_ZP));
+		m_Connectors.push_back(cConnector(0,            a_Height / 2, m_SizeXZ / 2, 2,            BLOCK_FACE_XM));
+		m_Connectors.push_back(cConnector(m_SizeXZ - 1, a_Height - 1, m_SizeXZ / 2, m_SizeXZ % 3, BLOCK_FACE_XP));
+	}
+	
+	
+	/** Imprints the piece in the specified chunk. Assumes they intersect. */
+	void ImprintInChunk(cChunkDesc & a_ChunkDesc, const Vector3i & a_Pos, int a_NumCCWRotations)
+	{
+		int BlockX = a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		int BlockZ = a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+		Vector3i Min = a_Pos;
+		Min.Move(-BlockX, 0, -BlockZ);
+		Vector3i Max = Min;
+		Max.Move(m_SizeXZ - 1, m_Height - 1, m_SizeXZ - 1);
+		ASSERT(Min.x < cChunkDef::Width);
+		ASSERT(Min.z < cChunkDef::Width);
+		ASSERT(Max.x >= 0);
+		ASSERT(Max.z >= 0);
+		if (Min.x >= 0)
+		{
+			// Draw the XM wall:
+			a_ChunkDesc.FillRelCuboid(Min.x, Min.x, Min.y, Max.y, Min.z, Max.z, E_BLOCK_STAINED_GLASS, m_SizeXZ % 16);
+		}
+		if (Min.z >= 0)
+		{
+			// Draw the ZM wall:
+			a_ChunkDesc.FillRelCuboid(Min.x, Max.x, Min.y, Max.y, Min.z, Min.z, E_BLOCK_STAINED_GLASS, m_SizeXZ % 16);
+		}
+		if (Max.x < cChunkDef::Width)
+		{
+			// Draw the XP wall:
+			a_ChunkDesc.FillRelCuboid(Max.x, Max.x, Min.y, Max.y, Min.z, Max.z, E_BLOCK_STAINED_GLASS, m_SizeXZ % 16);
+		}
+		if (Max.z < cChunkDef::Width)
+		{
+			// Draw the ZP wall:
+			a_ChunkDesc.FillRelCuboid(Min.x, Max.x, Min.y, Max.y, Max.z, Max.z, E_BLOCK_STAINED_GLASS, m_SizeXZ % 16);
+		}
+		
+		// Draw all the connectors:
+		for (cConnectors::const_iterator itr = m_Connectors.begin(), end = m_Connectors.end(); itr != end; ++itr)
+		{
+			cConnector Conn = cPiece::RotateMoveConnector(*itr, a_NumCCWRotations, a_Pos.x, a_Pos.y, a_Pos.z);
+			Conn.m_Pos.Move(-BlockX, 0, -BlockZ);
+			if (
+				(Conn.m_Pos.x >= 0) && (Conn.m_Pos.x < cChunkDef::Width) &&
+				(Conn.m_Pos.z >= 0) && (Conn.m_Pos.z < cChunkDef::Width)
+			)
+			{
+				a_ChunkDesc.SetBlockTypeMeta(Conn.m_Pos.x, Conn.m_Pos.y, Conn.m_Pos.z, E_BLOCK_WOOL, itr->m_Type % 16);
+			}
+			
+			/*
+			// TODO: Frame the connectors
+			switch (itr->m_Direction)
+			{
+				case BLOCK_FACE_XM:
+				case BLOCK_FACE_XP:
+				{
+					// TODO
+					break;
+				}
+				
+				case BLOCK_FACE_ZM:
+				case BLOCK_FACE_ZP:
+				{
+					// TODO
+					break;
+				}
+			}
+			*/
+		}  // for itr - m_Connectors[]
+	}
+	
+protected:
+	int m_SizeXZ;
+	int m_Height;
+	cConnectors m_Connectors;
+	
+	// cPiece overrides:
+	virtual cConnectors GetConnectors(void) const override
+	{
+		return m_Connectors;
+	}
+	
+	virtual Vector3i GetSize(void) const override
+	{
+		return Vector3i(m_SizeXZ, m_Height, m_SizeXZ);
+	}
+	
+	virtual cCuboid GetHitBox(void) const override
+	{
+		return cCuboid(0, 0, 0, m_SizeXZ - 1, m_Height - 1, m_SizeXZ - 1);
+	}
+	
+	virtual bool CanRotateCCW(int a_NumRotations) const override
+	{
+		return true;
+	}
+};
+
+
+
+
+
+/*
+static void DebugPieces(const cPlacedPieces & a_Pieces)
+{
+	size_t idx = 0;
+	for (cPlacedPieces::const_iterator itr = a_Pieces.begin(), end = a_Pieces.end(); itr != end; ++itr, ++idx)
+	{
+		const cCuboid & HitBox = (*itr)->GetHitBox();
+		printf("  %u: %d rotations, {%d - %d, %d - %d}\n",
+			idx, (*itr)->GetNumCCWRotations(),
+			HitBox.p1.x, HitBox.p2.x, HitBox.p1.z, HitBox.p2.z
+		);
+	}  // for itr - a_Pieces[]
+}
+//*/
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPOCPieceGenerator:
+
+cPOCPieceGenerator::cPOCPieceGenerator(int a_Seed) :
+	m_Seed(a_Seed)
+{
+	// Prepare a vector of available pieces:
+	m_AvailPieces.push_back(new cPOCPiece(5, 3));
+	m_AvailPieces.push_back(new cPOCPiece(7, 5));
+	m_AvailPieces.push_back(new cPOCPiece(9, 5));
+	m_AvailPieces.push_back(new cPOCPiece(5, 7));
+	
+	// Generate the structure:
+	cBFSPieceGenerator Gen(*this, a_Seed);
+	Gen.PlacePieces(0, 50, 0, 6, m_Pieces);
+	
+	// DebugPieces(m_Pieces);
+	
+	// Get the smallest cuboid encompassing the entire generated structure:
+	cCuboid Bounds(0, 50, 0, 0, 50, 0);
+	for (cPlacedPieces::const_iterator itr = m_Pieces.begin(), end = m_Pieces.end(); itr != end; ++itr)
+	{
+		Vector3i MinCoords = (*itr)->GetCoords();
+		Bounds.Engulf(MinCoords);
+		Bounds.Engulf(MinCoords + (*itr)->GetPiece().GetSize());
+	}  // for itr - m_Pieces[]
+	m_Bounds = Bounds;
+}
+
+
+
+
+
+cPOCPieceGenerator::~cPOCPieceGenerator()
+{
+	cPieceGenerator::FreePieces(m_Pieces);
+}
+
+
+
+
+
+void cPOCPieceGenerator::GenFinish(cChunkDesc & a_ChunkDesc)
+{
+	int BlockX = a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+	int BlockZ = a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+	if (
+		(BlockX + 16 < m_Bounds.p1.x) || (BlockX > m_Bounds.p2.x) ||  // X coords out of bounds of the generated structure
+		(BlockZ + 16 < m_Bounds.p1.z) || (BlockZ > m_Bounds.p2.z)     // Z coords out of bounds of the generated structure
+	)
+	{
+		return;
+	}
+	
+	// Imprint each piece in the chunk:
+	for (cPlacedPieces::const_iterator itr = m_Pieces.begin(), end = m_Pieces.end(); itr != end; ++itr)
+	{
+		const Vector3i & Pos = (*itr)->GetCoords();
+		Vector3i Size = (*itr)->GetPiece().GetSize();
+		if (((*itr)->GetNumCCWRotations() % 2) == 1)
+		{
+			std::swap(Size.x, Size.z);
+		}
+		if (
+			(Pos.x >= BlockX + 16) || (Pos.x + Size.x - 1 < BlockX) ||
+			(Pos.z >= BlockZ + 16) || (Pos.z + Size.z - 1 < BlockZ)
+		)
+		{
+			// This piece doesn't intersect the chunk
+			continue;
+		}
+			
+		((cPOCPiece &)(*itr)->GetPiece()).ImprintInChunk(a_ChunkDesc, Pos, (*itr)->GetNumCCWRotations());
+	}  // for itr - m_Pieces[]
+	a_ChunkDesc.UpdateHeightmap();
+}
+
+
+
+
+
+cPieces cPOCPieceGenerator::GetPiecesWithConnector(int a_ConnectorType)
+{
+	// Each piece has each connector
+	return m_AvailPieces;
+}
+
+
+
+
+
+cPieces cPOCPieceGenerator::GetStartingPieces(void)
+{
+	// Any piece can be a starting piece
+	return m_AvailPieces;
+}
+
+
+
+
+
+void cPOCPieceGenerator::PiecePlaced(const cPiece & a_Piece)
+{
+	UNUSED(a_Piece);
+}
+
+
+
+
+
+void cPOCPieceGenerator::Reset(void)
+{
+	// Nothing needed
+}
+
+
+
+
diff --git a/src/Generating/POCPieceGenerator.h b/src/Generating/POCPieceGenerator.h
new file mode 100644
index 000000000..de3114ce0
--- /dev/null
+++ b/src/Generating/POCPieceGenerator.h
@@ -0,0 +1,54 @@
+
+// POCPieceGenerator.h
+
+// Declares the cPOCPieceGenerator class representing a Proof-Of_Concept structure generator using the cPieceGenerator technique
+// The generator generates a maze of rooms at {0, 100, 0}
+
+
+
+
+
+#pragma once
+
+#include "PieceGenerator.h"
+#include "ComposableGenerator.h"
+
+
+
+
+
+class cPOCPieceGenerator :
+	public cFinishGen,
+	protected cPiecePool
+{
+public:
+	cPOCPieceGenerator(int a_Seed);
+	~cPOCPieceGenerator();
+	
+protected:
+	int m_Seed;
+	
+	/** The pieces from which the generated structure is built. */
+	cPieces m_AvailPieces;
+	
+	/** The placed pieces of the generated structure. */
+	cPlacedPieces m_Pieces;
+	
+	/** Bounds of the complete structure, to save on processing outside chunks. */
+	cCuboid m_Bounds;
+
+
+	// cFinishGen overrides:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+	
+	// cPiecePool overrides:
+	virtual cPieces GetPiecesWithConnector(int a_ConnectorType) override;
+	virtual cPieces GetStartingPieces(void) override;
+	virtual void PiecePlaced(const cPiece & a_Piece) override;
+	virtual void Reset(void) override;
+} ;
+
+
+
+
+
diff --git a/src/Generating/PieceGenerator.cpp b/src/Generating/PieceGenerator.cpp
new file mode 100644
index 000000000..8999a5ff7
--- /dev/null
+++ b/src/Generating/PieceGenerator.cpp
@@ -0,0 +1,625 @@
+
+// PieceGenerator.cpp
+
+// Implements the cBFSPieceGenerator class and cDFSPieceGenerator class 
+// representing base classes for generating structures composed of individual "pieces"
+
+#include "Globals.h"
+#include "PieceGenerator.h"
+
+
+
+
+
+#ifdef SELF_TEST
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Self-test:
+
+static class cPieceGeneratorSelfTest :
+	public cPiecePool
+{
+public:
+	cPieceGeneratorSelfTest(void)
+	{
+		// Prepare the internal state:
+		InitializePieces();
+		
+		// Generate:
+		cBFSPieceGenerator Gen(*this, 0);
+		cPlacedPieces OutPieces;
+		Gen.PlacePieces(500, 50, 500, 3, OutPieces);
+		
+		// Print out the pieces:
+		printf("OutPieces.size() = " SIZE_T_FMT "\n", OutPieces.size());
+		size_t idx = 0;
+		for (cPlacedPieces::const_iterator itr = OutPieces.begin(), end = OutPieces.end(); itr != end; ++itr, ++idx)
+		{
+			const Vector3i & Coords = (*itr)->GetCoords();
+			cCuboid Hitbox = (*itr)->GetHitBox();
+			Hitbox.Sort();
+			printf(SIZE_T_FMT ": {%d, %d, %d}, rot %d, hitbox {%d, %d, %d} - {%d, %d, %d} (%d * %d * %d)\n", idx,
+				Coords.x, Coords.y, Coords.z,
+				(*itr)->GetNumCCWRotations(),
+				Hitbox.p1.x, Hitbox.p1.y, Hitbox.p1.z,
+				Hitbox.p2.x, Hitbox.p2.y, Hitbox.p2.z,
+				Hitbox.DifX() + 1, Hitbox.DifY() + 1, Hitbox.DifZ() + 1
+			);
+		}  // itr - OutPieces[]
+		printf("Done.\n");
+		
+		// Free the placed pieces properly:
+		Gen.FreePieces(OutPieces);
+	}
+	
+	~cPieceGeneratorSelfTest()
+	{
+		// Dealloc all the pieces:
+		for (cPieces::iterator itr = m_Pieces.begin(), end = m_Pieces.end(); itr != end; ++itr)
+		{
+			delete *itr;
+		}
+		m_Pieces.clear();
+	}
+	
+protected:
+	class cTestPiece :
+		public cPiece
+	{
+		int m_Size;
+	public:
+		cTestPiece(int a_Size) :
+			m_Size(a_Size)
+		{
+		}
+		
+		virtual cConnectors GetConnectors(void) const override
+		{
+			// Each piece has 4 connectors, one of each type, plus one extra, at the center of its walls:
+			cConnectors res;
+			res.push_back(cConnector(m_Size / 2, 1, 0,          0, BLOCK_FACE_ZM));
+			res.push_back(cConnector(m_Size / 2, 1, m_Size - 1, 1, BLOCK_FACE_ZP));
+			res.push_back(cConnector(0,          1, m_Size / 2, 2, BLOCK_FACE_XM));
+			res.push_back(cConnector(m_Size - 1, 1, m_Size / 2, m_Size % 3, BLOCK_FACE_XP));
+			return res;
+		}
+		
+		virtual Vector3i GetSize(void) const override
+		{
+			return Vector3i(m_Size, 5, m_Size);
+		}
+		
+		virtual cCuboid GetHitBox(void) const override
+		{
+			return cCuboid(0, 0, 0, m_Size - 1, 4, m_Size - 1);
+		}
+		
+		virtual bool CanRotateCCW(int a_NumCCWRotations) const override
+		{
+			return true;
+		}
+	};
+	
+	cPieces m_Pieces;
+	
+	virtual cPieces GetPiecesWithConnector(int a_ConnectorType) override
+	{
+		// Each piece contains each connector
+		return m_Pieces;
+	}
+	
+	
+	virtual cPieces GetStartingPieces(void) override
+	{
+		return m_Pieces;
+	}
+	
+	
+	virtual void PiecePlaced(const cPiece & a_Piece) override
+	{
+		UNUSED(a_Piece);
+	}
+	
+	
+	virtual void Reset(void) override
+	{
+	}
+	
+	
+	void InitializePieces(void)
+	{
+		m_Pieces.push_back(new cTestPiece(5));
+		m_Pieces.push_back(new cTestPiece(7));
+		m_Pieces.push_back(new cTestPiece(9));
+	}
+} g_Test;
+
+#endif  // SELF_TEST
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPiece:
+
+	
+Vector3i cPiece::RotatePos(const Vector3i & a_Pos, int a_NumCCWRotations) const
+{
+	Vector3i Size = GetSize();
+	switch (a_NumCCWRotations)
+	{
+		case 0:
+		{
+			// No rotation needed
+			return a_Pos;
+		}
+		case 1:
+		{
+			// 1 CCW rotation:
+			return Vector3i(a_Pos.z, a_Pos.y, Size.x - a_Pos.x - 1);
+		}
+		case 2:
+		{
+			// 2 rotations ( = axis flip):
+			return Vector3i(Size.x - a_Pos.x - 1, a_Pos.y, Size.z - a_Pos.z - 1);
+		}
+		case 3:
+		{
+			// 1 CW rotation:
+			return Vector3i(Size.z - a_Pos.z - 1, a_Pos.y, a_Pos.x);
+		}
+	}
+	ASSERT(!"Unhandled rotation");
+	return a_Pos;
+}
+
+
+
+
+
+cPiece::cConnector cPiece::RotateMoveConnector(const cConnector & a_Connector, int a_NumCCWRotations, int a_MoveX, int a_MoveY, int a_MoveZ) const
+{
+	cPiece::cConnector res(a_Connector);
+	
+	// Rotate the res connector:
+	switch (a_NumCCWRotations)
+	{
+		case 0:
+		{
+			// No rotation needed
+			break;
+		}
+		case 1:
+		{
+			// 1 CCW rotation:
+			res.m_Direction = RotateBlockFaceCCW(res.m_Direction);
+			break;
+		}
+		case 2:
+		{
+			// 2 rotations ( = axis flip):
+			res.m_Direction = MirrorBlockFaceY(res.m_Direction);
+			break;
+		}
+		case 3:
+		{
+			// 1 CW rotation:
+			res.m_Direction = RotateBlockFaceCW(res.m_Direction);
+			break;
+		}
+	}
+	res.m_Pos = RotatePos(a_Connector.m_Pos, a_NumCCWRotations);
+	
+	// Move the res connector:
+	res.m_Pos.x += a_MoveX;
+	res.m_Pos.y += a_MoveY;
+	res.m_Pos.z += a_MoveZ;
+	
+	return res;
+}
+
+
+
+
+
+cCuboid cPiece::RotateHitBoxToConnector(
+	const cPiece::cConnector & a_MyConnector,
+	const Vector3i & a_ToConnectorPos,
+	int a_NumCCWRotations
+) const
+{
+	ASSERT(a_NumCCWRotations == (a_NumCCWRotations % 4));
+	Vector3i ConnPos = RotatePos(a_MyConnector.m_Pos, a_NumCCWRotations);
+	ConnPos = a_ToConnectorPos - ConnPos;
+	return RotateMoveHitBox(a_NumCCWRotations, ConnPos.x, ConnPos.y, ConnPos.z);
+}
+
+
+
+
+
+cCuboid cPiece::RotateMoveHitBox(int a_NumCCWRotations, int a_MoveX, int a_MoveY, int a_MoveZ) const
+{
+	ASSERT(a_NumCCWRotations == (a_NumCCWRotations % 4));
+	cCuboid res = GetHitBox();
+	res.p1 = RotatePos(res.p1, a_NumCCWRotations);
+	res.p2 = RotatePos(res.p2, a_NumCCWRotations);
+	res.p1.Move(a_MoveX, a_MoveY, a_MoveZ);
+	res.p2.Move(a_MoveX, a_MoveY, a_MoveZ);
+	return res;
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPiece::cConnector:
+
+cPiece::cConnector::cConnector(int a_X, int a_Y, int a_Z, int a_Type, eBlockFace a_Direction) :
+	m_Pos(a_X, a_Y, a_Z),
+	m_Type(a_Type),
+	m_Direction(a_Direction)
+{
+}
+
+
+
+
+
+cPiece::cConnector::cConnector(const Vector3i & a_Pos, int a_Type, eBlockFace a_Direction) :
+	m_Pos(a_Pos),
+	m_Type(a_Type),
+	m_Direction(a_Direction)
+{
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPlacedPiece:
+
+cPlacedPiece::cPlacedPiece(const cPlacedPiece * a_Parent, const cPiece & a_Piece, const Vector3i & a_Coords, int a_NumCCWRotations) :
+	m_Parent(a_Parent),
+	m_Piece(&a_Piece),
+	m_Coords(a_Coords),
+	m_NumCCWRotations(a_NumCCWRotations)
+{
+	m_Depth = (m_Parent == NULL) ? 0 : (m_Parent->GetDepth() + 1);
+	m_HitBox = a_Piece.RotateMoveHitBox(a_NumCCWRotations, a_Coords.x, a_Coords.y, a_Coords.z);
+	m_HitBox.Sort();
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPieceGenerator:
+
+cPieceGenerator::cPieceGenerator(cPiecePool & a_PiecePool, int a_Seed) :
+	m_PiecePool(a_PiecePool),
+	m_Noise(a_Seed),
+	m_Seed(a_Seed)
+{
+}
+
+
+
+
+
+void cPieceGenerator::FreePieces(cPlacedPieces & a_PlacedPieces)
+{
+	for (cPlacedPieces::iterator itr = a_PlacedPieces.begin(), end = a_PlacedPieces.end(); itr != end; ++itr)
+	{
+		delete *itr;
+	}  // for itr - a_PlacedPieces[]
+	a_PlacedPieces.clear();
+}
+
+
+
+
+
+cPlacedPiece * cPieceGenerator::PlaceStartingPiece(int a_BlockX, int a_BlockY, int a_BlockZ, cFreeConnectors & a_OutConnectors)
+{
+	m_PiecePool.Reset();
+	int rnd = m_Noise.IntNoise3DInt(a_BlockX, a_BlockY, a_BlockZ) / 7;
+	
+	// Choose a random one of the starting pieces:
+	cPieces StartingPieces = m_PiecePool.GetStartingPieces();
+	cPiece * StartingPiece = StartingPieces[rnd % StartingPieces.size()];
+	rnd = rnd >> 16;
+	
+	// Choose a random supported rotation:
+	int Rotations[4] = {0};
+	int NumRotations = 1;
+	for (size_t i = 1; i < ARRAYCOUNT(Rotations); i++)
+	{
+		if (StartingPiece->CanRotateCCW(i))
+		{
+			Rotations[NumRotations] = i;
+			NumRotations += 1;
+		}
+	}
+	int Rotation = Rotations[rnd % NumRotations];
+	
+	cPlacedPiece * res = new cPlacedPiece(NULL, *StartingPiece, Vector3i(a_BlockX, a_BlockY, a_BlockZ), Rotation);
+
+	// Place the piece's connectors into a_OutConnectors:
+	const cPiece::cConnectors & Conn = StartingPiece->GetConnectors();
+	for (cPiece::cConnectors::const_iterator itr = Conn.begin(), end = Conn.end(); itr != end; ++itr)
+	{
+		a_OutConnectors.push_back(
+			cFreeConnector(res, StartingPiece->RotateMoveConnector(*itr, Rotation, a_BlockX, a_BlockY, a_BlockZ))
+		);
+	}
+
+	return res;
+}
+
+
+
+
+
+bool cPieceGenerator::TryPlacePieceAtConnector(
+	const cPlacedPiece & a_ParentPiece,
+	const cPiece::cConnector & a_Connector,
+	cPlacedPieces & a_OutPieces,
+	cPieceGenerator::cFreeConnectors & a_OutConnectors
+)
+{
+	// Translation of direction - direction -> number of CCW rotations needed:
+	// You need DirectionRotationTable[rot1][rot2] CCW turns to connect rot1 to rot2 (they are opposite)
+	static const int DirectionRotationTable[6][6] =
+	{
+		/*         YM, YP, ZM, ZP, XM, XP */
+		/* YM */ { 0,  0,  0,  0,  0,  0},
+		/* YP */ { 0,  0,  0,  0,  0,  0},
+		/* ZM */ { 0,  0,  2,  0,  1,  3},
+		/* ZP */ { 0,  0,  0,  2,  3,  1},
+		/* XM */ { 0,  0,  3,  1,  2,  0},
+		/* XP */ { 0,  0,  1,  3,  0,  2},
+	};
+	
+	// Get a list of available connections:
+	const int * RotTable = DirectionRotationTable[a_Connector.m_Direction];
+	cConnections Connections;
+	cPieces AvailablePieces = m_PiecePool.GetPiecesWithConnector(a_Connector.m_Type);
+	Connections.reserve(AvailablePieces.size());
+	Vector3i ConnPos = a_Connector.m_Pos;  // The position at which the new connector should be placed - 1 block away from the connector
+	AddFaceDirection(ConnPos.x, ConnPos.y, ConnPos.z, a_Connector.m_Direction);
+	
+	/*
+	// DEBUG:
+	printf("Placing piece at connector pos {%d, %d, %d}, direction %s\n", ConnPos.x, ConnPos.y, ConnPos.z, BlockFaceToString(a_Connector.m_Direction).c_str());
+	//*/
+	
+	for (cPieces::iterator itrP = AvailablePieces.begin(), endP = AvailablePieces.end(); itrP != endP; ++itrP)
+	{
+		cPiece::cConnectors Connectors = (*itrP)->GetConnectors();
+		for (cPiece::cConnectors::iterator itrC = Connectors.begin(), endC = Connectors.end(); itrC != endC; ++itrC)
+		{
+			if (itrC->m_Type != a_Connector.m_Type)
+			{
+				continue;
+			}
+			// This is a same-type connector, find out how to rotate to it:
+			int NumCCWRotations = RotTable[itrC->m_Direction];
+			if (!(*itrP)->CanRotateCCW(NumCCWRotations))
+			{
+				// Doesn't support this rotation
+				continue;
+			}
+			if (!CheckConnection(a_Connector, ConnPos, **itrP, *itrC, NumCCWRotations, a_OutPieces))
+			{
+				// Doesn't fit in this rotation
+				continue;
+			}
+			Connections.push_back(cConnection(**itrP, *itrC, NumCCWRotations));
+		}  // for itrC - Connectors[]
+	}  // for itrP - AvailablePieces[]
+	if (Connections.empty())
+	{
+		// No available connections, bail out
+		return false;
+	}
+	
+	// Choose a random connection from the list:
+	int rnd = m_Noise.IntNoise3DInt(a_Connector.m_Pos.x, a_Connector.m_Pos.y, a_Connector.m_Pos.z) / 7;
+	cConnection & Conn = Connections[rnd % Connections.size()];
+	
+	// Place the piece:
+	/*
+	// DEBUG
+	printf("Chosen connector at {%d, %d, %d}, direction %s, needs %d rotations\n",
+		Conn.m_Connector.m_Pos.x, Conn.m_Connector.m_Pos.y, Conn.m_Connector.m_Pos.z,
+		BlockFaceToString(Conn.m_Connector.m_Direction).c_str(),
+		Conn.m_NumCCWRotations
+	);
+	//*/
+	
+	Vector3i NewPos = Conn.m_Piece->RotatePos(Conn.m_Connector.m_Pos, Conn.m_NumCCWRotations);
+	ConnPos -= NewPos;
+	cPlacedPiece * PlacedPiece = new cPlacedPiece(&a_ParentPiece, *(Conn.m_Piece), ConnPos, Conn.m_NumCCWRotations);
+	a_OutPieces.push_back(PlacedPiece);
+	
+	// Add the new piece's connectors to the list of free connectors:
+	cPiece::cConnectors Connectors = Conn.m_Piece->GetConnectors();
+	
+	/*
+	// DEBUG:
+	printf("Adding %u connectors to the pool\n", Connectors.size() - 1);
+	//*/
+	
+	for (cPiece::cConnectors::const_iterator itr = Connectors.begin(), end = Connectors.end(); itr != end; ++itr)
+	{
+		if (itr->m_Pos.Equals(Conn.m_Connector.m_Pos))
+		{
+			// This is the connector through which we have been connected to the parent, don't add
+			continue;
+		}
+		a_OutConnectors.push_back(cFreeConnector(PlacedPiece, Conn.m_Piece->RotateMoveConnector(*itr, Conn.m_NumCCWRotations, ConnPos.x, ConnPos.y, ConnPos.z)));
+	}
+	
+	return true;
+}
+
+
+
+
+
+bool cPieceGenerator::CheckConnection(
+	const cPiece::cConnector & a_ExistingConnector,
+	const Vector3i & a_ToPos,
+	const cPiece & a_Piece,
+	const cPiece::cConnector & a_NewConnector,
+	int a_NumCCWRotations,
+	const cPlacedPieces & a_OutPieces
+)
+{
+	// For each placed piece, test the hitbox against the new piece:
+	cCuboid RotatedHitBox = a_Piece.RotateHitBoxToConnector(a_NewConnector, a_ToPos, a_NumCCWRotations);
+	RotatedHitBox.Sort();
+	for (cPlacedPieces::const_iterator itr = a_OutPieces.begin(), end = a_OutPieces.end(); itr != end; ++itr)
+	{
+		if ((*itr)->GetHitBox().DoesIntersect(RotatedHitBox))
+		{
+			return false;
+		}
+	}
+	return true;
+}
+
+
+
+
+
+//*
+// DEBUG:
+void cPieceGenerator::DebugConnectorPool(const cPieceGenerator::cFreeConnectors & a_ConnectorPool, size_t a_NumProcessed)
+{
+	printf("  Connector pool: " SIZE_T_FMT " items\n", a_ConnectorPool.size() - a_NumProcessed);
+	size_t idx = 0;
+	for (cPieceGenerator::cFreeConnectors::const_iterator itr = a_ConnectorPool.begin() + a_NumProcessed, end = a_ConnectorPool.end(); itr != end; ++itr, ++idx)
+	{
+		printf("    " SIZE_T_FMT ": {%d, %d, %d}, type %d, direction %s, depth %d\n",
+			idx,
+			itr->m_Connector.m_Pos.x, itr->m_Connector.m_Pos.y, itr->m_Connector.m_Pos.z,
+			itr->m_Connector.m_Type,
+			BlockFaceToString(itr->m_Connector.m_Direction).c_str(),
+			itr->m_Piece->GetDepth()
+		);
+	}  // for itr - a_ConnectorPool[]
+}
+//*/
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPieceGenerator::cConnection:
+
+cPieceGenerator::cConnection::cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations) :
+	m_Piece(&a_Piece),
+	m_Connector(a_Connector),
+	m_NumCCWRotations(a_NumCCWRotations)
+{
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cPieceGenerator::cFreeConnector:
+
+cPieceGenerator::cFreeConnector::cFreeConnector(cPlacedPiece * a_Piece, const cPiece::cConnector & a_Connector) :
+	m_Piece(a_Piece),
+	m_Connector(a_Connector)
+{
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cBFSPieceGenerator:
+
+cBFSPieceGenerator::cBFSPieceGenerator(cPiecePool & a_PiecePool, int a_Seed) :
+	super(a_PiecePool, a_Seed)
+{
+}
+
+
+
+
+
+void cBFSPieceGenerator::PlacePieces(int a_BlockX, int a_BlockY, int a_BlockZ, int a_MaxDepth, cPlacedPieces & a_OutPieces)
+{
+	a_OutPieces.clear();
+	cFreeConnectors ConnectorPool;
+	
+	// Place the starting piece:
+	a_OutPieces.push_back(PlaceStartingPiece(a_BlockX, a_BlockY, a_BlockZ, ConnectorPool));
+	
+	/*
+	// DEBUG:
+	printf("Placed the starting piece at {%d, %d, %d}\n", a_BlockX, a_BlockY, a_BlockZ);
+	cCuboid Hitbox = a_OutPieces[0]->GetHitBox();
+	Hitbox.Sort();
+	printf("  Hitbox: {%d, %d, %d} - {%d, %d, %d} (%d * %d * %d)\n",
+		Hitbox.p1.x, Hitbox.p1.y, Hitbox.p1.z,
+		Hitbox.p2.x, Hitbox.p2.y, Hitbox.p2.z,
+		Hitbox.DifX() + 1, Hitbox.DifY() + 1, Hitbox.DifZ() + 1
+	);
+	DebugConnectorPool(ConnectorPool, 0);
+	//*/
+	
+	// Place pieces at the available connectors:
+	/*
+	Instead of removing them one by one from the pool, we process them sequentially and take note of the last
+	processed one. To save on memory, once the number of processed connectors reaches a big number, a chunk
+	of the connectors is removed.
+	*/
+	size_t NumProcessed = 0;
+	while (ConnectorPool.size() > NumProcessed)
+	{
+		cFreeConnector & Conn = ConnectorPool[NumProcessed];
+		if (Conn.m_Piece->GetDepth() < a_MaxDepth)
+		{
+			if (TryPlacePieceAtConnector(*Conn.m_Piece, Conn.m_Connector, a_OutPieces, ConnectorPool))
+			{
+				/*
+				// DEBUG:
+				const cPlacedPiece * NewPiece = a_OutPieces.back();
+				const Vector3i & Coords = NewPiece->GetCoords();
+				printf("Placed a new piece at {%d, %d, %d}, rotation %d\n", Coords.x, Coords.y, Coords.z, NewPiece->GetNumCCWRotations());
+				cCuboid Hitbox = NewPiece->GetHitBox();
+				Hitbox.Sort();
+				printf("  Hitbox: {%d, %d, %d} - {%d, %d, %d} (%d * %d * %d)\n",
+					Hitbox.p1.x, Hitbox.p1.y, Hitbox.p1.z,
+					Hitbox.p2.x, Hitbox.p2.y, Hitbox.p2.z,
+					Hitbox.DifX() + 1, Hitbox.DifY() + 1, Hitbox.DifZ() + 1
+				);
+				DebugConnectorPool(ConnectorPool, NumProcessed + 1);
+				//*/
+			}
+		}
+		NumProcessed++;
+		if (NumProcessed > 1000)
+		{
+			ConnectorPool.erase(ConnectorPool.begin(), ConnectorPool.begin() + NumProcessed);
+			NumProcessed = 0;
+		}
+	}
+}
+
+
+
+
diff --git a/src/Generating/PieceGenerator.h b/src/Generating/PieceGenerator.h
new file mode 100644
index 000000000..bef9d3463
--- /dev/null
+++ b/src/Generating/PieceGenerator.h
@@ -0,0 +1,247 @@
+
+// PieceGenerator.h
+
+// Declares the cBFSPieceGenerator class and cDFSPieceGenerator class 
+// representing base classes for generating structures composed of individual "pieces"
+
+/*
+Each uses a slightly different approach to generating:
+	- DFS extends pieces one by one until it hits the configured depth (or can't connect another piece anymore),
+		then starts looking at adjacent connectors (like depth-first search).
+	- BFS keeps a pool of currently-open connectors, chooses one at random and tries to place a piece on it,
+		thus possibly extending the pool of open connectors (like breadth-first search).
+*/
+
+
+
+
+
+#pragma once
+
+#include "../Defines.h"
+#include "../Cuboid.h"
+#include "../Noise.h"
+
+
+
+
+
+/** Represents a single piece. Can have multiple connectors of different types where other pieces can connect. */
+class cPiece
+{
+public:
+	// Force a virtual destructor in all descendants
+	virtual ~cPiece() {}
+	
+	struct cConnector
+	{
+		/** Position relative to the piece */
+		Vector3i m_Pos;
+		
+		/** Type of the connector. Any arbitrary number; the generator connects only connectors of the same type. */
+		int m_Type;
+		
+		/** Direction in which the connector is facing.
+		Will be matched by the opposite direction for the connecting connector. */
+		eBlockFace m_Direction;
+		
+		cConnector(int a_X, int a_Y, int a_Z, int a_Type, eBlockFace a_Direction);
+		cConnector(const Vector3i & a_Pos, int a_Type, eBlockFace a_Direction);
+	};
+	
+	typedef std::vector<cConnector> cConnectors;
+	
+	/** Returns all of the available connectors that the piece has.
+	Each connector has a (relative) position in the piece, and a type associated with it. */
+	virtual cConnectors GetConnectors(void) const = 0;
+	
+	/** Returns the dimensions of this piece.
+	The dimensions cover the entire piece, there is no block that the piece generates outside of this size. */
+	virtual Vector3i GetSize(void) const = 0;
+	
+	/** Returns the "hitbox" of this piece.
+	A hitbox is what is compared and must not intersect other pieces' hitboxes when generating. */
+	virtual cCuboid GetHitBox(void) const = 0;
+	
+	/** Returns true if the piece can be rotated CCW the specific number of 90-degree turns. */
+	virtual bool CanRotateCCW(int a_NumRotations) const = 0;
+	
+	/** Returns a copy of the a_Pos after rotating the piece the specified number of CCW rotations. */
+	Vector3i RotatePos(const Vector3i & a_Pos, int a_NumCCWRotations) const;
+
+	/** Returns a copy of the connector that is rotated and then moved by the specified amounts. */
+	cConnector RotateMoveConnector(const cConnector & a_Connector, int a_NumCCWRotations, int a_MoveX, int a_MoveY, int a_MoveZ) const;
+	
+	/** Returns the hitbox after the specified number of rotations and moved so that a_MyConnector is placed at a_ToConnectorPos. */
+	cCuboid RotateHitBoxToConnector(const cConnector & a_MyConnector, const Vector3i & a_ToConnectorPos, int a_NumCCWRotations) const;
+	
+	/** Returns the hitbox after the specified number of CCW rotations and moved by the specified amounts. */
+	cCuboid RotateMoveHitBox(int a_NumCCWRotations, int a_MoveX, int a_MoveY, int a_MoveZ) const;
+};
+
+typedef std::vector<cPiece *> cPieces;
+
+
+
+
+
+/** This class is an interface that provides pieces for the generator. It can keep track of what pieces were
+placed and adjust the returned piece vectors. */
+class cPiecePool
+{
+public:
+	// Force a virtual destructor in all descendants:
+	virtual ~cPiecePool() {}
+	
+	/** Returns a list of pieces that contain the specified connector type.
+	The cPiece pointers returned are managed by the pool and the caller doesn't free them. */
+	virtual cPieces GetPiecesWithConnector(int a_ConnectorType) = 0;
+	
+	/** Returns the pieces that should be used as the starting point.
+	Multiple starting points are supported, one of the returned piece will be chosen. */
+	virtual cPieces GetStartingPieces(void) = 0;
+	
+	/** Called after a piece is placed, to notify the pool that it has been used.
+	The pool may adjust the pieces it will return the next time. */
+	virtual void PiecePlaced(const cPiece & a_Piece) = 0;
+	
+	/** Called when the pool has finished the current structure and should reset any piece-counters it has
+	for a new structure. */
+	virtual void Reset(void) = 0;
+};
+
+
+
+
+
+/** Represents a single piece that has been placed to specific coords in the world. */
+class cPlacedPiece
+{
+public:
+	cPlacedPiece(const cPlacedPiece * a_Parent, const cPiece & a_Piece, const Vector3i & a_Coords, int a_NumCCWRotations);
+	
+	const cPiece &   GetPiece          (void) const { return *m_Piece; }
+	const Vector3i & GetCoords         (void) const { return m_Coords; }
+	int              GetNumCCWRotations(void) const { return m_NumCCWRotations; }
+	const cCuboid &  GetHitBox         (void) const { return m_HitBox; }
+	int              GetDepth          (void) const { return m_Depth; }
+	
+protected:
+	const cPlacedPiece * m_Parent;
+	const cPiece * m_Piece;
+	Vector3i m_Coords;
+	int m_NumCCWRotations;
+	cCuboid m_HitBox;
+	int m_Depth;
+};
+
+typedef std::vector<cPlacedPiece *> cPlacedPieces;
+
+
+
+
+
+class cPieceGenerator
+{
+public:
+	cPieceGenerator(cPiecePool & a_PiecePool, int a_Seed);
+	
+	/** Cleans up all the memory used by the placed pieces.
+	Call this utility function instead of freeing the items on your own. */
+	static void FreePieces(cPlacedPieces & a_PlacedPieces);
+	
+protected:
+	/** The type used for storing a connection from one piece to another, while building the piece tree. */
+	struct cConnection
+	{
+		cPiece * m_Piece;                  // The piece being connected
+		cPiece::cConnector m_Connector;    // The piece's connector being used (relative non-rotated coords)
+		int m_NumCCWRotations;             // Number of rotations necessary to match the two connectors
+		
+		cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations);
+	};
+	typedef std::vector<cConnection> cConnections;
+	
+	/** The type used for storing a pool of connectors that will be attempted to expand by another piece. */
+	struct cFreeConnector
+	{
+		cPlacedPiece * m_Piece;
+		cPiece::cConnector m_Connector;
+		
+		cFreeConnector(cPlacedPiece * a_Piece, const cPiece::cConnector & a_Connector);
+	};
+	typedef std::vector<cFreeConnector> cFreeConnectors;
+
+
+	cPiecePool & m_PiecePool;
+	cNoise m_Noise;
+	int m_Seed;
+
+	
+	/** Selects a starting piece and places it, including the rotations.
+	Also puts the piece's connectors in a_OutConnectors. */
+	cPlacedPiece * PlaceStartingPiece(int a_BlockX, int a_BlockY, int a_BlockZ, cFreeConnectors & a_OutConnectors);
+	
+	/** Tries to place a new piece at the specified (placed) connector. Returns true if successful. */
+	bool TryPlacePieceAtConnector(
+		const cPlacedPiece & a_ParentPiece,      // The existing piece to a new piece should be placed
+		const cPiece::cConnector & a_Connector,  // The existing connector (world-coords) to which a new piece should be placed
+		cPlacedPieces & a_OutPieces,             // Already placed pieces, to be checked for intersections
+		cFreeConnectors & a_OutConnectors        // List of free connectors to which the new connectors will be placed
+	);
+
+	/** Checks if the specified piece would fit with the already-placed pieces, using the specified connector
+	and number of CCW rotations.
+	a_ExistingConnector is in world-coords and is already rotated properly
+	a_ToPos is the world-coords position on which the new connector should be placed (1 block away from a_ExistingConnector, in its Direction)
+	a_NewConnector is in the original (non-rotated) coords.
+	Returns true if the piece fits, false if not. */
+	bool CheckConnection(
+		const cPiece::cConnector & a_ExistingConnector,  // The existing connector
+		const Vector3i & a_ToPos,                        // The position on which the new connector should be placed
+		const cPiece & a_Piece,                          // The new piece
+		const cPiece::cConnector & a_NewConnector,       // The connector of the new piece 
+		int a_NumCCWRotations,                           // Number of rotations for the new piece to align the connector
+		const cPlacedPieces & a_OutPieces                // All the already-placed pieces to check
+	);
+	
+	/** DEBUG: Outputs all the connectors in the pool into stdout.
+	a_NumProcessed signals the number of connectors from the pool that should be considered processed (not listed). */
+	void DebugConnectorPool(const cPieceGenerator::cFreeConnectors & a_ConnectorPool, size_t a_NumProcessed);
+} ;
+
+
+
+
+
+class cBFSPieceGenerator :
+	public cPieceGenerator
+{
+	typedef cPieceGenerator super;
+	
+public:
+	cBFSPieceGenerator(cPiecePool & a_PiecePool, int a_Seed);
+	
+	/** Generates a placement for pieces at the specified coords.
+	Caller must free each individual cPlacedPiece in a_OutPieces. */
+	void PlacePieces(int a_BlockX, int a_BlockY, int a_BlockZ, int a_MaxDepth, cPlacedPieces & a_OutPieces);
+};
+
+
+
+
+
+class cDFSPieceGenerator :
+	public cPieceGenerator
+{
+public:
+	cDFSPieceGenerator(cPiecePool & a_PiecePool, int a_Seed);
+	
+	/** Generates a placement for pieces at the specified coords.
+	Caller must free each individual cPlacedPiece in a_OutPieces. */
+	void PlacePieces(int a_BlockX, int a_BlockY, int a_BlockZ, cPlacedPieces & a_OutPieces);
+};
+
+
+
+
diff --git a/src/Generating/Prefab.cpp b/src/Generating/Prefab.cpp
new file mode 100644
index 000000000..131b6acb2
--- /dev/null
+++ b/src/Generating/Prefab.cpp
@@ -0,0 +1,316 @@
+
+// Prefab.cpp
+
+/*
+Implements the cPrefab class, representing a cPiece descendant for the cPieceGenerator that
+uses a prefabricate in a cBlockArea for drawing itself.
+*/
+
+#include "Globals.h"
+#include "Prefab.h"
+#include "../WorldStorage/SchematicFileSerializer.h"
+#include "ChunkDesc.h"
+
+
+
+
+
+#ifdef SELF_TEST
+
+// Create one static prefab to test the parser:
+static const cPrefab::sDef g_TestPrefabDef =
+{
+	// Size:
+	7, 6, 7,  // SizeX = 7, SizeY = 6, SizeZ = 7
+
+	// Block definitions:
+	".:  0: 0\n"  /* 0 */
+	"a:112: 0\n"  /* netherbrick */
+	"b:113: 0\n"  /* netherbrickfence */,
+
+	// Block data:
+	// Level 1
+	"aaaaaaa"
+	"aaaaaaa"
+	"aaaaaaa"
+	"aaaaaaa"
+	"aaaaaaa"
+	"aaaaaaa"
+	"aaaaaaa"
+
+	// Level 2
+	"aa...aa"
+	"a.....a"
+	"......."
+	"......."
+	"......."
+	"a.....a"
+	"aa...aa"
+
+	// Level 3
+	"aa...aa"
+	"a.....a"
+	"......."
+	"......."
+	"......."
+	"a.....a"
+	"aa...aa"
+
+	// Level 4
+	"aa...aa"
+	"a.....a"
+	"......."
+	"......."
+	"......."
+	"a.....a"
+	"aa...aa"
+
+	// Level 5
+	"aabbbaa"
+	"a.....a"
+	"b.....b"
+	"b.....b"
+	"b.....b"
+	"a.....a"
+	"aabbbaa"
+
+	// Level 6
+	"aaaaaaa"
+	"a.....a"
+	"a.....a"
+	"a.....a"
+	"a.....a"
+	"a.....a"
+	"aaaaaaa",
+	
+	// Connections:
+	"0: 0, 3, 2: 4\n"
+	"0: 2, 3, 0: 2\n",
+	
+	// AllowedRotations:
+	7,  /* 1, 2, 3 CCW rotations */
+	
+	// Merge strategy:
+	cBlockArea::msImprint
+};
+
+static cPrefab g_TestPrefab(g_TestPrefabDef);
+#endif
+
+
+
+
+
+cPrefab::cPrefab(const cPrefab::sDef & a_Def) :
+	m_Size(a_Def.m_SizeX, a_Def.m_SizeY, a_Def.m_SizeZ),
+	m_HitBox(0, 0, 0, a_Def.m_SizeX - 1, a_Def.m_SizeY - 1, a_Def.m_SizeZ - 1),
+	m_AllowedRotations(a_Def.m_AllowedRotations),
+	m_MergeStrategy(a_Def.m_MergeStrategy)
+{
+	m_BlockArea[0].Create(m_Size);
+	CharMap cm;
+	ParseCharMap(cm, a_Def.m_CharMap);
+	ParseBlockImage(cm, a_Def.m_Image);
+	ParseConnectors(a_Def.m_Connectors);
+	
+	// 1 CCW rotation:
+	if ((m_AllowedRotations & 0x01) != 0)
+	{
+		m_BlockArea[1].CopyFrom(m_BlockArea[0]);
+		m_BlockArea[1].RotateCCW();
+	}
+	
+	// 2 rotations are the same as mirroring twice; mirroring is faster because it has no reallocations
+	if ((m_AllowedRotations & 0x02) != 0)
+	{
+		m_BlockArea[2].CopyFrom(m_BlockArea[0]);
+		m_BlockArea[2].MirrorXY();
+		m_BlockArea[2].MirrorYZ();
+	}	
+	
+	// 3 CCW rotations = 1 CW rotation:
+	if ((m_AllowedRotations & 0x04) != 0)
+	{
+		m_BlockArea[3].CopyFrom(m_BlockArea[0]);
+		m_BlockArea[3].RotateCW();
+	}
+}
+
+
+
+
+
+void cPrefab::Draw(cChunkDesc & a_Dest, const cPlacedPiece * a_Placement) const
+{
+	Vector3i Placement = a_Placement->GetCoords();
+	int ChunkStartX = a_Dest.GetChunkX() * cChunkDef::Width;
+	int ChunkStartZ = a_Dest.GetChunkZ() * cChunkDef::Width;
+	Placement.Move(-ChunkStartX, 0, -ChunkStartZ);
+	a_Dest.WriteBlockArea(m_BlockArea[a_Placement->GetNumCCWRotations()], Placement.x, Placement.y, Placement.z, m_MergeStrategy);
+	
+}
+
+
+
+
+
+bool cPrefab::HasConnectorType(int a_ConnectorType) const
+{
+	for (cConnectors::const_iterator itr = m_Connectors.begin(), end = m_Connectors.end(); itr != end; ++itr)
+	{
+		if (itr->m_Type == a_ConnectorType)
+		{
+			return true;
+		}
+	}  // for itr - m_Connectors[]
+	return false;
+}
+
+
+
+
+
+void cPrefab::ParseCharMap(CharMap & a_CharMapOut, const char * a_CharMapDef)
+{
+	ASSERT(a_CharMapDef != NULL);
+	
+	// Initialize the charmap to all-invalid values:
+	for (size_t i = 0; i < ARRAYCOUNT(a_CharMapOut); i++)
+	{
+		a_CharMapOut[i].m_BlockType = 0;
+		a_CharMapOut[i].m_BlockMeta = 16;  // Mark unassigned entries with a meta that is impossible otherwise
+	}
+	
+	// Process the lines in the definition:
+	AStringVector Lines = StringSplitAndTrim(a_CharMapDef, "\n");
+	for (AStringVector::const_iterator itr = Lines.begin(), end = Lines.end(); itr != end; ++itr)
+	{
+		AStringVector CharDef = StringSplitAndTrim(*itr, ":");
+		size_t NumElements = CharDef.size();
+		if ((NumElements < 2) || CharDef[0].empty() || CharDef[1].empty())
+		{
+			LOGWARNING("Bad prefab CharMap definition line: \"%s\", skipping.", itr->c_str());
+			continue;
+		}
+		unsigned char Src = (unsigned char)CharDef[0][0];
+		ASSERT(a_CharMapOut[Src].m_BlockMeta == 16);  // This letter has not been assigned yet?
+		a_CharMapOut[Src].m_BlockType = (BLOCKTYPE)atoi(CharDef[1].c_str());
+		NIBBLETYPE BlockMeta = 0;
+		if ((NumElements >= 3) && !CharDef[2].empty())
+		{
+			BlockMeta = (NIBBLETYPE)atoi(CharDef[2].c_str());
+			ASSERT((BlockMeta >= 0) && (BlockMeta <= 15));
+		}
+		a_CharMapOut[Src].m_BlockMeta = BlockMeta;
+	}  // for itr - Lines[]
+}
+
+
+
+
+
+void cPrefab::ParseBlockImage(const CharMap & a_CharMap, const char * a_BlockImage)
+{
+	// Map each letter in the a_BlockImage (from the in-source definition) to real blocktype / blockmeta:
+	for (int y = 0; y < m_Size.y; y++)
+	{
+		for (int z = 0; z < m_Size.z; z++)
+		{
+			const unsigned char * BlockImage = (const unsigned char *)a_BlockImage + y * m_Size.x * m_Size.z + z * m_Size.x;
+			for (int x = 0; x < m_Size.x; x++)
+			{
+				const sBlockTypeDef & MappedValue = a_CharMap[BlockImage[x]];
+				ASSERT(MappedValue.m_BlockMeta != 16);  // Using a letter not defined in the CharMap?
+				m_BlockArea[0].SetRelBlockTypeMeta(x, y, z, MappedValue.m_BlockType, MappedValue.m_BlockMeta);
+			}
+		}
+	}
+}
+
+
+
+
+
+void cPrefab::ParseConnectors(const char * a_ConnectorsDef)
+{
+	ASSERT(a_ConnectorsDef != NULL);
+	
+	AStringVector Lines = StringSplitAndTrim(a_ConnectorsDef, "\n");
+	for (AStringVector::const_iterator itr = Lines.begin(), end = Lines.end(); itr != end; ++itr)
+	{
+		if (itr->empty())
+		{
+			continue;
+		}
+		// Split into components: "Type: X, Y, Z: Face":
+		AStringVector Defs = StringSplitAndTrim(*itr, ":");
+		if (Defs.size() != 3)
+		{
+			LOGWARNING("Bad prefab Connector definition line: \"%s\", skipping.", itr->c_str());
+			continue;
+		}
+		AStringVector Coords = StringSplitAndTrim(Defs[1], ",");
+		if (Coords.size() != 3)
+		{
+			LOGWARNING("Bad prefab Connector coords definition: \"%s\", skipping.", Defs[1].c_str());
+			continue;
+		}
+		
+		// Check that the BlockFace is within range:
+		int BlockFace = atoi(Defs[2].c_str());
+		if ((BlockFace < 0) || (BlockFace >= 6))
+		{
+			LOGWARNING("Bad prefab Connector Blockface: \"%s\", skipping.", Defs[2].c_str());
+			continue;
+		}
+
+		// Add the connector:
+		m_Connectors.push_back(cPiece::cConnector(
+			atoi(Coords[0].c_str()), atoi(Coords[1].c_str()), atoi(Coords[2].c_str()),  // Connector pos
+			atoi(Defs[0].c_str()),  // Connector type
+			(eBlockFace)BlockFace
+		));
+	}  // for itr - Lines[]
+}
+
+
+
+
+
+cPiece::cConnectors cPrefab::GetConnectors(void) const
+{
+	return m_Connectors;
+}
+
+
+
+
+
+Vector3i cPrefab::GetSize(void) const
+{
+	return m_Size;
+}
+
+
+
+
+
+cCuboid cPrefab::GetHitBox(void) const
+{
+	return m_HitBox;
+}
+
+
+
+
+
+bool cPrefab::CanRotateCCW(int a_NumRotations) const
+{
+	// Either zero rotations
+	// Or the proper bit in m_AllowedRotations is set
+	return (a_NumRotations == 0) || ((m_AllowedRotations & (1 << ((a_NumRotations + 3) % 4))) != 0);
+}
+
+
+
+
diff --git a/src/Generating/Prefab.h b/src/Generating/Prefab.h
new file mode 100644
index 000000000..04c4f09da
--- /dev/null
+++ b/src/Generating/Prefab.h
@@ -0,0 +1,105 @@
+
+// Prefab.h
+
+/*
+Declares the cPrefab class, representing a cPiece descendant for the cPieceGenerator that
+uses a prefabricate in a cBlockArea for drawing itself.
+The class can be constructed from data that is stored directly in the executable, in a sPrefabDef structure
+declared in this file as well; the Gallery server exports areas in this format.
+*/
+
+
+
+
+
+#pragma once
+
+#include "PieceGenerator.h"
+#include "../BlockArea.h"
+
+
+
+
+
+// fwd:
+class cChunkDesc;
+
+
+
+
+
+class cPrefab :
+	public cPiece
+{
+public:
+	struct sDef
+	{
+		int m_SizeX;
+		int m_SizeY;
+		int m_SizeZ;
+		const char * m_CharMap;
+		const char * m_Image;
+		const char * m_Connectors;
+		int m_AllowedRotations;
+		cBlockArea::eMergeStrategy m_MergeStrategy;
+	};
+	
+	cPrefab(const sDef & a_Def);
+	
+	/** Draws the prefab into the specified chunk, according to the placement stored in the PlacedPiece. */
+	void Draw(cChunkDesc & a_Dest, const cPlacedPiece * a_Placement) const;
+	
+	/** Returns true if the prefab has any connector of the specified type. */
+	bool HasConnectorType(int a_ConnectorType) const;
+
+protected:
+	/** Packs complete definition of a single block, for per-letter assignment. */
+	struct sBlockTypeDef
+	{
+		BLOCKTYPE  m_BlockType;
+		NIBBLETYPE m_BlockMeta;
+	};
+	
+	/** Maps letters in the sDef::m_Image onto a number, BlockType * 16 | BlockMeta */
+	typedef sBlockTypeDef CharMap[256];
+	
+	
+	/** The cBlockArea that contains the block definitions for the prefab.
+	The index identifies the number of CCW rotations applied (0 = no rotation, 1 = 1 CCW rotation, ...). */
+	cBlockArea m_BlockArea[4];
+	
+	/** The size of the prefab */
+	Vector3i m_Size;
+	
+	/** The hitbox of the prefab. In first version is the same as the m_BlockArea dimensions */
+	cCuboid m_HitBox;
+	
+	/** The connectors through which the piece connects to other pieces */
+	cConnectors m_Connectors;
+	
+	/** Bitmask, bit N set -> N rotations CCW supported */
+	int m_AllowedRotations;
+	
+	/** The merge strategy to use when drawing the prefab into a block area */
+	cBlockArea::eMergeStrategy m_MergeStrategy;
+	
+	
+	// cPiece overrides:	
+	virtual cConnectors GetConnectors(void) const override;
+	virtual Vector3i GetSize(void) const override;
+	virtual cCuboid GetHitBox(void) const override;
+	virtual bool CanRotateCCW(int a_NumRotations) const override;
+	
+	/** Parses the CharMap in the definition into a CharMap binary data used for translating the definition into BlockArea. */
+	void ParseCharMap(CharMap & a_CharMapOut, const char * a_CharMapDef);
+	
+	/** Parses the Image in the definition into m_BlockArea[0]'s block types and metas, using the specified CharMap. */
+	void ParseBlockImage(const CharMap & a_CharMap, const char * a_BlockImage);
+	
+	/** Parses the connectors definition text into m_Connectors member. */
+	void ParseConnectors(const char * a_ConnectorsDef);
+};
+
+
+
+
diff --git a/src/Generating/Prefabs/CMakeLists.txt b/src/Generating/Prefabs/CMakeLists.txt
new file mode 100644
index 000000000..1e60447e7
--- /dev/null
+++ b/src/Generating/Prefabs/CMakeLists.txt
@@ -0,0 +1,13 @@
+
+cmake_minimum_required (VERSION 2.6)
+project (MCServer)
+
+include_directories ("${PROJECT_SOURCE_DIR}/../../")
+
+file(GLOB SOURCE
+    "*.cpp"
+)
+
+add_library(Generating_Prefabs ${SOURCE})
+
+target_link_libraries(Generating_Prefabs OSSupport iniFile Blocks)
diff --git a/src/Generating/Prefabs/NetherFortPrefabs.cpp b/src/Generating/Prefabs/NetherFortPrefabs.cpp
new file mode 100644
index 000000000..5e8685e32
--- /dev/null
+++ b/src/Generating/Prefabs/NetherFortPrefabs.cpp
@@ -0,0 +1,2758 @@
+
+// NetherFortPrefabs.cpp
+
+// Defines all the prefabs for nether forts
+
+#include "Globals.h"
+#include "NetherFortPrefabs.h"
+
+
+
+
+
+/*
+The nether fortress has two types of connectors, Outer and Inner. Outer is Type 0, Inner is Type 1.
+*/
+
+
+
+
+
+const cPrefab::sDef g_NetherFortPrefabs1[] =
+{
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BalconyCorridor:
+	// The data has been exported from gallery Nether, area index 37, ID 288
+	{
+		// Size:
+		13, 7, 9,  // SizeX = 13, SizeY = 7, SizeZ = 9
+
+		// Block definitions:
+		"a:112: 0\n"  /* netherbrick */
+		"b: 19: 0\n"  /* sponge */
+		"c:114: 4\n"  /* netherbrickstairs */
+		"d:114: 7\n"  /* netherbrickstairs */
+		"e:114: 5\n"  /* netherbrickstairs */
+		"f: 44: 6\n"  /* step */
+		"g:113: 0\n"  /* netherbrickfence */
+		"h:114: 2\n"  /* netherbrickstairs */
+		"i:114: 3\n"  /* netherbrickstairs */
+		"j:114: 0\n"  /* netherbrickstairs */
+		"k:114: 1\n"  /* netherbrickstairs */
+		".:  0: 0\n"  /* air */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"bbbbaaaaabbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+
+		// Level 2
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaa.aaa.aaaa"
+		"bbcdaaaaadebb"
+		"bbbcdddddebbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+
+		// Level 3
+		"aaaaaaaaaaaaa"
+		"............."
+		"............."
+		"............."
+		"aaaa.fff.aaaa"
+		"bbaaaaaaaaabb"
+		"bbaaaaaaaaabb"
+		"bbaaaaaaaaabb"
+		"bbaaaaaaaaabb"
+
+		// Level 4
+		"agagagagagaga"
+		"............."
+		"............."
+		"............."
+		"agaa.....aaga"
+		"bbaaa...aaabb"
+		"bbg.......gbb"
+		"bbg.......gbb"
+		"bbgggggggggbb"
+
+		// Level 5
+		"agagagagagaga"
+		"............."
+		"............."
+		"............."
+		"agaa.....aaga"
+		"bbaaa...aaabb"
+		"bb.........bb"
+		"bb.........bb"
+		"bb.........bb"
+
+		// Level 6
+		"agagagagagaga"
+		"............."
+		"............."
+		"............."
+		"agaa.....aaga"
+		"bbaaa...aaabb"
+		"bb.........bb"
+		"bb.........bb"
+		"bb.........bb"
+
+		// Level 7
+		"hhhhhhhhhhhhh"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"iijaaaaaaaiii"
+		"bbjiiiiiiikbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb",
+		
+		// Connections:
+		"1:  0, 2, 2: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 12, 2, 2: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BalconyCorridor
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BalconyTee2:
+	// The data has been exported from gallery Nether, area index 38, ID 289
+	{
+		// Size:
+		13, 7, 11,  // SizeX = 13, SizeY = 7, SizeZ = 11
+
+		// Block definitions:
+		"a: 19: 0\n"  /* sponge */
+		"b:112: 0\n"  /* netherbrick */
+		"c:114: 4\n"  /* netherbrickstairs */
+		"d:114: 7\n"  /* netherbrickstairs */
+		"e:114: 5\n"  /* netherbrickstairs */
+		"f: 44: 6\n"  /* step */
+		"g:113: 0\n"  /* netherbrickfence */
+		"h:114: 0\n"  /* netherbrickstairs */
+		"i:114: 1\n"  /* netherbrickstairs */
+		"j:114: 2\n"  /* netherbrickstairs */
+		"k:114: 3\n"  /* netherbrickstairs */
+		".:  0: 0\n"  /* air */,
+
+		// Block data:
+		// Level 1
+		"aaaabbbbbaaaa"
+		"aaaabbbbbaaaa"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"aaaabbbbbaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"aaaabbbbbaaaa"
+		"aaaabbbbbaaaa"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbb.bbb.bbbb"
+		"aacdbbbbbdeaa"
+		"aaacdddddeaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 3
+		"aaaab...baaaa"
+		"aaaab...baaaa"
+		"bbbbb...bbbbb"
+		"............."
+		"............."
+		"............."
+		"bbbb.fff.bbbb"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+
+		// Level 4
+		"aaaab...baaaa"
+		"aaaag...gaaaa"
+		"bgbgb...bgbgb"
+		"............."
+		"............."
+		"............."
+		"bgbb.....bbgb"
+		"aabbb...bbbaa"
+		"aag.......gaa"
+		"aag.......gaa"
+		"aagggggggggaa"
+
+		// Level 5
+		"aaaab...baaaa"
+		"aaaag...gaaaa"
+		"bgbgb...bgbgb"
+		"............."
+		"............."
+		"............."
+		"bgbb.....bbgb"
+		"aabbb...bbbaa"
+		"aa.........aa"
+		"aa.........aa"
+		"aa.........aa"
+
+		// Level 6
+		"aaaab...baaaa"
+		"aaaag...gaaaa"
+		"bgbgb...bgbgb"
+		"............."
+		"............."
+		"............."
+		"bgbb.....bbgb"
+		"aabbb...bbbaa"
+		"aa.........aa"
+		"aa.........aa"
+		"aa.........aa"
+
+		// Level 7
+		"aaaahbbbiaaaa"
+		"aaaahbbbiaaaa"
+		"jjjjjbbbjjjjj"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"bbbbbbbbbbbbb"
+		"kkhbbbbbbbkkk"
+		"aahkkkkkkkiaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa",
+		
+		// Connections:
+		"1:  0, 2, 4: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 12, 2, 4: 5\n"  /* Type 1, BLOCK_FACE_XP */
+		"1:  6, 2, 0: 2\n"  /* Type 1, BLOCK_FACE_ZM */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BalconyTee2
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BlazePlatform
+	// The data has been exported from gallery Nether, area index 26, ID 276
+	{
+		// Size:
+		10, 7, 7,  // SizeX = 10, SizeY = 7, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b: 52: 0\n"  /* mobspawner */
+		"c:113: 0\n"  /* netherbrickfence */,
+
+		// Block data:
+		// Level 1
+		".........."
+		"aaaaaaaaaa"
+		"aaaaaaaaaa"
+		"aaaaaaaaaa"
+		"aaaaaaaaaa"
+		"aaaaaaaaaa"
+		".........."
+
+		// Level 2
+		".........."
+		"aaaaaaaaaa"
+		"..aaaaaaaa"
+		"..aaaaaaaa"
+		"..aaaaaaaa"
+		"aaaaaaaaaa"
+		".........."
+
+		// Level 3
+		"....aaaaaa"
+		"aaaaaaaaaa"
+		"...aaaaaaa"
+		"...aaaaaaa"
+		"...aaaaaaa"
+		"aaaaaaaaaa"
+		"....aaaaaa"
+
+		// Level 4
+		"....aaaaaa"
+		"..aaa....a"
+		".........a"
+		"......b..a"
+		".........a"
+		"..aaa....a"
+		"....aaaaaa"
+
+		// Level 5
+		"....cccccc"
+		"...cc....c"
+		".........c"
+		".........c"
+		".........c"
+		"...cc....c"
+		"....cccccc"
+
+		// Level 6
+		".........."
+		".........c"
+		".........c"
+		".........c"
+		".........c"
+		".........c"
+		".........."
+
+		// Level 7
+		".........."
+		".........."
+		".........c"
+		".........c"
+		".........c"
+		".........."
+		"..........",
+
+		// Connections:
+		"0:  0, 1, 3: 4\n"  /* Type 0, BLOCK_FACE_XM */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BlazePlatform
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BlazePlatformOverhang:
+	// The data has been exported from gallery Nether, area index 20, ID 162
+	{
+		// Size:
+		14, 9, 7,  // SizeX = 14, SizeY = 9, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 5\n"  /* netherbrickstairs */
+		"c: 44:14\n"  /* step */
+		"d:114: 6\n"  /* netherbrickstairs */
+		"e:114: 7\n"  /* netherbrickstairs */
+		"f:114: 0\n"  /* netherbrickstairs */
+		"g:114: 4\n"  /* netherbrickstairs */
+		"h:113: 0\n"  /* netherbrickfence */
+		"i: 52: 0\n"  /* mobspawner */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"aammmmmmmmmmmm"
+		"aammmmmmmmmmmm"
+		"aammmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 2
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"aabcmmmmmmmmmm"
+		"aabcmmmmmmmmmm"
+		"aabcmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 3
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"aaaaabmmmmmmmm"
+		"aaaaabmmmmmmmm"
+		"aaaaabmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 4
+		"mmmmmmmmmmmmmm"
+		"dddddddmmmmmmm"
+		"aaaaaabmmmmmmm"
+		"aaaaaabmmmmmmm"
+		"aaaaaabmmmmmmm"
+		"eeeeeeemmmmmmm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 5
+		"mmmmmmmmmmmmmm"
+		"aaaaaaadmmmmmm"
+		"aaaaaaabmmmmmm"
+		"aaaaaaabmmmmmm"
+		"aaaaaaabmmmmmm"
+		"aaaaaaaemmmmmm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 6
+		"mmmmmmmmmmmmmm"
+		"aaaaaaaabddddm"
+		"......faaaaabm"
+		"......faaaaabm"
+		"......faaaaabm"
+		"aaaaaaaaabeebm"
+		"mmmmmmmmmmmmmm"
+
+		// Level 7
+		"mmmmmmmmgdddbm"
+		"......aaaaaaad"
+		".......faaaaab"
+		".......faaaaab"
+		".......faaaaab"
+		"......aaaaaaae"
+		"mmmmmmmmgeeebm"
+
+		// Level 8
+		"mmmmmmmmaaaaam"
+		"......haa...aa"
+		".............a"
+		"..........i..a"
+		".............a"
+		"......haa...aa"
+		"mmmmmmmmaaaaam"
+
+		// Level 9
+		"mmmmmmmmhhhhhm"
+		"......hhh...hh"
+		".............h"
+		".............h"
+		".............h"
+		"......hhh...hh"
+		"mmmmmmmmhhhhhm",
+
+		// Connections:
+		"0:  0, 5, 3: 4\n"  /* Type 0, BLOCK_FACE_XM */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BlazePlatformOverhang
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BridgeCrossing:
+	// The data has been exported from gallery Nether, area index 17, ID 159
+	{
+		// Size:
+		15, 8, 15,  // SizeX = 15, SizeY = 8, SizeZ = 15
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 7\n"  /* netherbrickstairs */
+		"c:114: 5\n"  /* netherbrickstairs */
+		"d:114: 4\n"  /* netherbrickstairs */
+		"e:114: 6\n"  /* netherbrickstairs */
+		"f: 44:14\n"  /* step */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 2
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmbbbmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"aacmmmmmmmmmdaa"
+		"aacmmmmmmmmmdaa"
+		"aacmmmmmmmmmdaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmeeemmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 3
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmbbbmmmmmm"
+		"mmmmmmfffmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"aaacfmmmmmfdaaa"
+		"aaacfmmmmmfdaaa"
+		"aaacfmmmmmfdaaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmfffmmmmmm"
+		"mmmmmmeeemmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 4
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"eeeeeeaaaeeeeee"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"bbbbbdaaacbbbbb"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+		"mmmmmdaaacmmmmm"
+
+		// Level 5
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+
+		// Level 6
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"aaaaaa...aaaaaa"
+		"..............."
+		"..............."
+		"..............."
+		"aaaaaa...aaaaaa"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+
+		// Level 7
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+
+		// Level 8
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm",
+		
+		// Connections:
+		"0:  0, 5,  7: 4\n"  /* Type 0, BLOCK_FACE_XM */
+		"0:  7, 5,  0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"0: 14, 5,  7: 5\n"  /* Type 0, BLOCK_FACE_XP */
+		"0:  7, 5, 14: 3\n"  /* Type 0, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BridgeCrossing
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BridgeCrumble1:
+	// The data has been exported from gallery Nether, area index 19, ID 161
+	{
+		// Size:
+		9, 6, 5,  // SizeX = 9, SizeY = 6, SizeZ = 5
+
+		// Block definitions:
+		".: 19: 0\n"  /* sponge */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 5\n"  /* netherbrickstairs */
+		"c: 44:14\n"  /* step */
+		"d:114: 6\n"  /* netherbrickstairs */
+		"e:114: 7\n"  /* netherbrickstairs */,
+
+		// Block data:
+		// Level 1
+		"........."
+		"aa......."
+		"aa......."
+		"aa......."
+		"........."
+
+		// Level 2
+		"........."
+		"aab......"
+		"aab......"
+		"aab......"
+		"........."
+
+		// Level 3
+		"........."
+		"aaabc...."
+		"aaabc...."
+		"aaabc...."
+		"........."
+
+		// Level 4
+		"ddddddd.."
+		"aaaaaaaa."
+		"aaaaaaaaa"
+		"aaaaaaa.."
+		"eeeee...."
+
+		// Level 5
+		"aaaaaaaaa"
+		"aaaaa...."
+		"aaaaaa..."
+		"aaaaaa..."
+		"aaaaaaaa."
+
+		// Level 6
+		"aaaaaa..."
+		"........."
+		"........."
+		"........."
+		"aaaaaaa..",
+
+		// Connections:
+		"0:  0, 5, 2: 4\n"  /* Type 0, BLOCK_FACE_XM */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BridgeCrumble1
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BridgeCrumble2
+	// The data has been exported from gallery Nether, area index 18, ID 160
+	{
+		// Size:
+		13, 6, 5,  // SizeX = 13, SizeY = 6, SizeZ = 5
+
+		// Block definitions:
+		".: 19: 0\n"  /* sponge */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 5\n"  /* netherbrickstairs */
+		"c: 44:14\n"  /* step */
+		"d:114: 6\n"  /* netherbrickstairs */
+		"e:114: 7\n"  /* netherbrickstairs */,
+
+		// Block data:
+		// Level 1
+		"............."
+		"aa..........."
+		"aa..........."
+		"aa..........."
+		"............."
+
+		// Level 2
+		"............."
+		"aab.........."
+		"aab.........."
+		"aab.........."
+		"............."
+
+		// Level 3
+		"............."
+		"aaabc........"
+		"aaabc........"
+		"aaabc........"
+		"............."
+
+		// Level 4
+		"ddddddddd...."
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaa...."
+		"aaaaaaaaaaaa."
+		"eeeeeeeee...."
+
+		// Level 5
+		"aaaaaaaaaaaa."
+		"aaaaaaaaaa..."
+		"aaaaaaaaaaa.."
+		"aaaaaaaaa...."
+		"aaaaaaaaaaaaa"
+
+		// Level 6
+		"aaaaaaaaa...."
+		"............."
+		"............."
+		"............."
+		"aaaaaaaaaa...",
+
+		// Connections:
+		"0:  0, 5, 2: 4\n"  /* Type 0, BLOCK_FACE_XM */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BridgeCrumble2
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BridgeSegment:
+	// The data has been exported from gallery Nether, area index 16, ID 158
+	{
+		// Size:
+		15, 8, 5,  // SizeX = 15, SizeY = 8, SizeZ = 5
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 5\n"  /* netherbrickstairs */
+		"c:114: 4\n"  /* netherbrickstairs */
+		"d: 44:14\n"  /* step */
+		"e:114: 6\n"  /* netherbrickstairs */
+		"f:114: 7\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmmmmmmmmmmmm"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"mmmmmmmmmmmmmmm"
+
+		// Level 2
+		"mmmmmmmmmmmmmmm"
+		"aabmmmmmmmmmcaa"
+		"aabmmmmmmmmmcaa"
+		"aabmmmmmmmmmcaa"
+		"mmmmmmmmmmmmmmm"
+
+		// Level 3
+		"mmmmmmmmmmmmmmm"
+		"aaabdmmmmmdcaaa"
+		"aaabdmmmmmdcaaa"
+		"aaabdmmmmmdcaaa"
+		"mmmmmmmmmmmmmmm"
+
+		// Level 4
+		"eeeeeeeeeeeeeee"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"fffffffffffffff"
+
+		// Level 5
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+
+		// Level 6
+		"aaaaaaaaaaaaaaa"
+		"..............."
+		"..............."
+		"..............."
+		"aaaaaaaaaaaaaaa"
+
+		// Level 7
+		"mmmmmmmmmmmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmmmmmmmmmmm"
+
+		// Level 8
+		"mmmmmmmmmmmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmmmmmmmmmmm",
+
+		// Connections:
+		"0:  0, 5, 2: 4\n"  /* Type 0, BLOCK_FACE_XM */
+		"0: 14, 5, 2: 5\n"  /* Type 0, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BridgeSegment
+
+
+	// BridgeTee:
+	// The data has been exported from gallery Nether, area index 39, ID 290
+	{
+		// Size:
+		15, 8, 10,  // SizeX = 15, SizeY = 8, SizeZ = 10
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 5\n"  /* netherbrickstairs */
+		"c:114: 4\n"  /* netherbrickstairs */
+		"d:114: 6\n"  /* netherbrickstairs */
+		"e: 44:14\n"  /* step */
+		"f:114: 7\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmmmmmmmmmmmm"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"aammmmmmmmmmmaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 2
+		"mmmmmmmmmmmmmmm"
+		"aabmmmmmmmmmcaa"
+		"aabmmmmmmmmmcaa"
+		"aabmmmmmmmmmcaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmdddmmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 3
+		"mmmmmmmmmmmmmmm"
+		"aaabemmmmmecaaa"
+		"aaabemmmmmecaaa"
+		"aaabemmmmmecaaa"
+		"mmmmmmmmmmmmmmm"
+		"mmmmmmeeemmmmmm"
+		"mmmmmmdddmmmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+		"mmmmmmaaammmmmm"
+
+		// Level 4
+		"ddddddddddddddd"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"fffffcaaabfffff"
+		"mmmmmcaaabmmmmm"
+		"mmmmmcaaabmmmmm"
+		"mmmmmcaaabmmmmm"
+		"mmmmmcaaabmmmmm"
+		"mmmmmcaaabmmmmm"
+
+		// Level 5
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+		"mmmmmaaaaammmmm"
+
+		// Level 6
+		"aaaaaaaaaaaaaaa"
+		"..............."
+		"..............."
+		"..............."
+		"aaaaaa...aaaaaa"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+		"mmmmma...ammmmm"
+
+		// Level 7
+		"mmmmmmmmmmmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+
+		// Level 8
+		"mmmmmmmmmmmmmmm"
+		"..............."
+		"..............."
+		"..............."
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm"
+		"mmmmmm...mmmmmm",
+
+		// Connections:
+		"0:  0, 5, 2: 4\n"  /* Type 0, BLOCK_FACE_XM */
+		"0: 14, 5, 2: 5\n"  /* Type 0, BLOCK_FACE_XP */
+		"0:  7, 5, 9: 3\n"  /* Type 0, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // BridgeTee
+
+
+	// Corridor11:
+	// The data has been exported from gallery Nether, area index 36, ID 287
+	{
+		// Size:
+		11, 6, 5,  // SizeX = 11, SizeY = 6, SizeZ = 5
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c:114: 2\n"  /* netherbrickstairs */
+		"d:114: 3\n"  /* netherbrickstairs */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaaaaa"
+		"..........."
+		"..........."
+		"..........."
+		"aaaaaaaaaaa"
+
+		// Level 3
+		"abababababa"
+		"..........."
+		"..........."
+		"..........."
+		"abababababa"
+
+		// Level 4
+		"abababababa"
+		"..........."
+		"..........."
+		"..........."
+		"abababababa"
+
+		// Level 5
+		"abababababa"
+		"..........."
+		"..........."
+		"..........."
+		"abababababa"
+
+		// Level 6
+		"ccccccccccc"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"ddddddddddd",
+
+		// Connections:
+		"1:  0, 1, 2: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 10, 1, 2: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // Corridor11
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// Corridor13:
+	// The data has been exported from gallery Nether, area index 35, ID 286
+	{
+		// Size:
+		13, 6, 5,  // SizeX = 13, SizeY = 6, SizeZ = 5
+
+		// Block definitions:
+		"a:112: 0\n"  /* netherbrick */
+		".:  0: 0\n"  /* air */
+		"c:113: 0\n"  /* netherbrickfence */
+		"d:114: 2\n"  /* netherbrickstairs */
+		"e:114: 3\n"  /* netherbrickstairs */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaaaaaaa"
+		"............."
+		"............."
+		"............."
+		"aaaaaaaaaaaaa"
+
+		// Level 3
+		"acacacacacaca"
+		"............."
+		"............."
+		"............."
+		"acacacacacaca"
+
+		// Level 4
+		"acacacacacaca"
+		"............."
+		"............."
+		"............."
+		"acacacacacaca"
+
+		// Level 5
+		"acacacacacaca"
+		"............."
+		"............."
+		"............."
+		"acacacacacaca"
+
+		// Level 6
+		"ddddddddddddd"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"eeeeeeeeeeeee",
+		
+		// Connections:
+		"1:  0, 1, 2: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 12, 1, 2: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // Corridor13
+
+
+	// CorridorCorner5:
+	// The data has been exported from gallery Nether, area index 10, ID 40
+	{
+		// Size:
+		11, 6, 11,  // SizeX = 11, SizeY = 6, SizeZ = 11
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c:114: 2\n"  /* netherbrickstairs */
+		"d:114: 0\n"  /* netherbrickstairs */
+		"e:114: 3\n"  /* netherbrickstairs */
+		"f:114: 1\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+
+		// Level 2
+		"aaaaaaaaaaa"
+		"a.........."
+		"a.........."
+		"a.........."
+		"a...aaaaaaa"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+
+		// Level 3
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 4
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 5
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 6
+		"ccccccccccc"
+		"daaaaaaaaaa"
+		"daaaaaaaaaa"
+		"daaaaaaaaaa"
+		"daaaeeeeeee"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm",
+		
+		// Connections:
+		"1: 10, 1,  2: 5\n"  /* Type 1, BLOCK_FACE_XP */
+		"1:  2, 1, 10: 3\n"  /* Type 1, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // CorridorCorner5
+
+
+	// CorridorCorner5:
+	// The data has been exported from gallery Nether, area index 10, ID 40
+	{
+		// Size:
+		11, 6, 11,  // SizeX = 11, SizeY = 6, SizeZ = 11
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c:114: 2\n"  /* netherbrickstairs */
+		"d:114: 0\n"  /* netherbrickstairs */
+		"e:114: 3\n"  /* netherbrickstairs */
+		"f:114: 1\n"  /* netherbrickstairs */
+		"g: 54: 5\n"  /* chest */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaaaaaaaa"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+		"aaaaammmmmm"
+
+		// Level 2
+		"aaaaaaaaaaa"
+		"ag........."
+		"a.........."
+		"a.........."
+		"a...aaaaaaa"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+		"a...ammmmmm"
+
+		// Level 3
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 4
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 5
+		"abababababa"
+		"b.........."
+		"a.........."
+		"b.........."
+		"a...abababa"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+		"b...bmmmmmm"
+		"a...ammmmmm"
+
+		// Level 6
+		"ccccccccccc"
+		"daaaaaaaaaa"
+		"daaaaaaaaaa"
+		"daaaaaaaaaa"
+		"daaaeeeeeee"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm"
+		"daaafmmmmmm",
+		
+		// Connections:
+		"1: 10, 1,  2: 5\n"  /* Type 1, BLOCK_FACE_XP */
+		"1:  2, 1, 10: 3\n"  /* Type 1, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // CorridorCorner5Chest
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// CorridorStairs:
+	// The data has been exported from gallery Nether, area index 12, ID 42
+	{
+		// Size:
+		9, 13, 5,  // SizeX = 9, SizeY = 13, SizeZ = 5
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 0\n"  /* netherbrickstairs */
+		"c:113: 0\n"  /* netherbrickfence */
+		"d:114: 2\n"  /* netherbrickstairs */
+		"e:114: 3\n"  /* netherbrickstairs */
+		"f: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaa"
+		"aaaaaaaaa"
+		"aaaaaaaaa"
+		"aaaaaaaaa"
+		"aaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaaa"
+		".baaaaaaa"
+		".baaaaaaa"
+		".baaaaaaa"
+		"aaaaaaaaa"
+
+		// Level 3
+		"acaaaaaaa"
+		"..baaaaaa"
+		"..baaaaaa"
+		"..baaaaaa"
+		"acaaaaaaa"
+
+		// Level 4
+		"acaaaaaaa"
+		"...baaaaa"
+		"...baaaaa"
+		"...baaaaa"
+		"acaaaaaaa"
+
+		// Level 5
+		"acacaaaaa"
+		"....baaaa"
+		"....baaaa"
+		"....baaaa"
+		"acacaaaaa"
+
+		// Level 6
+		"aaacaaaaa"
+		".....baaa"
+		".....baaa"
+		".....baaa"
+		"aaacaaaaa"
+
+		// Level 7
+		"daacacaaa"
+		"a.....baa"
+		"a.....baa"
+		"a.....baa"
+		"eaacacaaa"
+
+		// Level 8
+		"fdaaacaaa"
+		"fa.....ba"
+		"fa.....ba"
+		"fa.....ba"
+		"feaaacaaa"
+
+		// Level 9
+		"ffdaacaca"
+		"ffa......"
+		"ffa......"
+		"ffa......"
+		"ffeaacaca"
+
+		// Level 10
+		"fffdaaaca"
+		"fffa....."
+		"fffa....."
+		"fffa....."
+		"fffeaaaca"
+
+		// Level 11
+		"ffffdaaca"
+		"ffffa...."
+		"ffffa...."
+		"ffffa...."
+		"ffffeaaca"
+
+		// Level 12
+		"fffffdaaa"
+		"fffffa..."
+		"fffffa..."
+		"fffffa..."
+		"fffffeaaa"
+
+		// Level 13
+		"ffffffddd"
+		"ffffffaaa"
+		"ffffffaaa"
+		"ffffffaaa"
+		"ffffffeee",
+
+		// Connections:
+		"1: 0, 1, 2: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 8, 8, 2: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // CorridorStairs
+
+
+	// LavaStaircase:
+	// The data has been exported from gallery Nether, area index 28, ID 278
+	{
+		// Size:
+		15, 11, 15,  // SizeX = 15, SizeY = 11, SizeZ = 15
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c: 11: 0\n"  /* lava */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaa...aaaa"
+		"aaaaa.........a"
+		"aaaaa.........a"
+		"aaaaab........a"
+		"accca...aaaa..a"
+		"accca...acca..a"
+		"acccaaaaacca..a"
+		"acccccccccca..a"
+		"acccaaaaacca..a"
+		"accca...acca..a"
+		"accca...aaaa..a"
+		"aaaaab........a"
+		"aaaaa.........a"
+		"aaaaa.........a"
+		"aaaaaaaa...aaaa"
+
+		// Level 3
+		"aaaaaaaa...aaaa"
+		"aaaa..........a"
+		"aaaa..........a"
+		"aaaabb........a"
+		"aaaa..........a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"aaaa..........a"
+		"aaaabb........a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"aaaaaaaa...aaaa"
+
+		// Level 4
+		"aaaaaaaa...aaaa"
+		"a.............a"
+		"a.............a"
+		"a..bb.........a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"a..bb.........a"
+		"a.............a"
+		"a.............a"
+		"aaaaaaaa...aaaa"
+
+		// Level 5
+		"aaaaaaaabbbaaaa"
+		"a.............a"
+		"a.............a"
+		"a..b..........a"
+		"a..b..........a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"a.............a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"a..b..........a"
+		"a..b..........a"
+		"a.............a"
+		"a.............a"
+		"aaaaaaaabbbaaaa"
+
+		// Level 6
+		"aaaaaaaaaaaaaaa"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a..b..........a"
+		"a..b..........a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"aaaa..........a"
+		"a..b..........a"
+		"a..b..........a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"aaaaaaaaaaaaaaa"
+
+		// Level 7
+		"aaaaaaaaaaaaaaa"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a..b..........a"
+		"...b..........a"
+		"...b..........a"
+		"...b..........a"
+		"a..b..........a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"a.............a"
+		"aaaaaaaaaaaaaaa"
+
+		// Level 8
+		"aababababababaa"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"..............b"
+		"..............a"
+		"..............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"aababababababaa"
+
+		// Level 9
+		"aababababababaa"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"..............b"
+		"..............a"
+		"..............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"aababababababaa"
+
+		// Level 10
+		"aababababababaa"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"..............b"
+		"..............a"
+		"..............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"b.............b"
+		"a.............a"
+		"aababababababaa"
+
+		// Level 11
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa"
+		"aaaaaaaaaaaaaaa",
+		
+		// Connections:
+		"1:  0, 6,  7: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"0:  9, 1,  0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"0:  9, 1, 14: 3\n"  /* Type 0, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // LavaStaircase
+
+
+	// LavaStaircaseBig:
+	// The data has been exported from gallery Nether, area index 31, ID 282
+	{
+		// Size:
+		12, 15, 15,  // SizeX = 12, SizeY = 15, SizeZ = 15
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b: 10: 0\n"  /* lava */
+		"c:113: 0\n"  /* netherbrickfence */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"abbbbbaaaaaa"
+		"abbbbbbaaaaa"
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbbaaaaa"
+		"abbbbb.aaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+
+		// Level 3
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"abbbbbaaaaaa"
+		"abbbbbba...a"
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbba...a"
+		"abbbbb.aaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+
+		// Level 4
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"abbbbbaa...a"
+		"abbbbbba...a"
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbba...."
+		"abbbbbba...a"
+		"abbbbbaa...a"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+
+		// Level 5
+		"aaaaaaaaaaaa"
+		"aaaaa......a"
+		"aaaaa......a"
+		"aaaaacc....a"
+		"a.....cc...a"
+		"a......c...a"
+		"a......c...."
+		"a......c...."
+		"a......c...."
+		"a......c...a"
+		"a.....cc...a"
+		"aaaaacc....a"
+		"aaaaa......a"
+		"aaaaa......a"
+		"aaaaaaaaaaaa"
+
+		// Level 6
+		"aaaaaaaaaaaa"
+		"aaaa.......a"
+		"aaaa.......a"
+		"aaaacc.....a"
+		"aaaa.......a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaa.......a"
+		"aaaacc.....a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"aaaaaaaaaaaa"
+
+		// Level 7
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..cc......a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"a..cc......a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 8
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..c.......a"
+		"a..c.......a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"a..........a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"a..c.......a"
+		"a..c.......a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 9
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..c.......a"
+		"a..c.......a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"aaaa.......a"
+		"a..c.......a"
+		"a..c.......a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 10
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..c.......a"
+		"...c.......a"
+		"...c.......a"
+		"...c.......a"
+		"a..c.......a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 11
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"...........a"
+		"...........a"
+		"...........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 12
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"...........a"
+		"...........a"
+		"...........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 13
+		"aaaaaaaaaaaa"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"...........a"
+		"...........a"
+		"...........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"a..........a"
+		"aaaaaaaaaaaa"
+
+		// Level 14
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+		"aaaaaaaaaaaa"
+
+		// Level 15
+		"aaaaaaaaaaaa"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"abbbbbbbbbba"
+		"aaaaaaaaaaaa",
+		
+		// Connections:
+		"1:  0, 9,  7: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 11, 1,  7: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // LavaStaircaseBig
+
+
+	// MidStaircase:
+	// The data has been exported from gallery Nether, area index 23, ID 165
+	{
+		// Size:
+		13, 8, 13,  // SizeX = 13, SizeY = 8, SizeZ = 13
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b: 88: 0\n"  /* soulsand */
+		"c:115: 7\n"  /* netherwartblock */
+		"d:114: 3\n"  /* netherbrickstairs */
+		"e:114: 0\n"  /* netherbrickstairs */
+		"f:114: 1\n"  /* netherbrickstairs */
+		"g:114: 2\n"  /* netherbrickstairs */
+		"h: 10: 0\n"  /* lava */
+		"i:113: 0\n"  /* netherbrickfence */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaabbbbbaaaa"
+		"aaaabbbbbaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaabbbbbaaaa"
+		"aaaabbbbbaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaacccccaaaa"
+		"addecccccfdda"
+		"...eaaaaad..."
+		"...eaaaaa...."
+		"...eaaaaag..."
+		"agggcccccfgga"
+		"aaaacccccaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 3
+		"aaaaaaaaaaaaa"
+		"aha.......aha"
+		"aaa.......aaa"
+		"a...........a"
+		"a...........a"
+		"....eaaaa...."
+		"....eaaaa...."
+		"....eaaaa...."
+		"a...........a"
+		"a...........a"
+		"aaa.......aaa"
+		"aha.......aha"
+		"aaaaaaaaaaaaa"
+
+		// Level 4
+		"aaaiiaaaiiaaa"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		".....eaaa...."
+		".....eaaa...."
+		".....eaaa...."
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"aaaiiaaaiiaaa"
+
+		// Level 5
+		"aaaiiaaaiiaaa"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"......eaa...."
+		"......eaa...."
+		"......eaa...."
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"aaaiiaaaiiaaa"
+
+		// Level 6
+		"aaaaaaaaaaaaa"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a......ea...a"
+		"a......ea...a"
+		"a......ea...a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"a...........a"
+		"aaaaaaaaaaaaa"
+
+		// Level 7
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaa....eaaaa"
+		"aaaa....eaaaa"
+		"aaaa....eaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 8
+		"iaiaiaiaiaiai"
+		"a...........a"
+		"i...........i"
+		"a...........a"
+		"i...........i"
+		"a............"
+		"i............"
+		"a............"
+		"i...........i"
+		"a...........a"
+		"i...........i"
+		"a...........a"
+		"iaiaiaiaiaiai",
+
+		// Connections:
+		"1:  0, 1, 6: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 12, 1, 6: 5\n"  /* Type 1, BLOCK_FACE_XP */
+		"1: 12, 7, 6: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // MidStaircase
+
+
+	// StairsToOpen1:
+	// The data has been exported from gallery Nether, area index 27, ID 277
+	{
+		// Size:
+		7, 10, 7,  // SizeX = 7, SizeY = 10, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+
+		// Level 2
+		"aa...aa"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"aaaaaaa"
+		"aaaaaaa"
+
+		// Level 3
+		"aa...aa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a.aaaaa"
+		"aabaaba"
+
+		// Level 4
+		"aa...aa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a..aaaa"
+		"aabaaba"
+
+		// Level 5
+		"aabbbaa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a...aaa"
+		"aabaaba"
+
+		// Level 6
+		"aaaaaaa"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a....aa"
+		"aaaaaaa"
+
+		// Level 7
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"a.....a"
+		"aaaaaaa"
+
+		// Level 8
+		"aaaaaaa"
+		"a.....a"
+		"a......"
+		"a......"
+		"a......"
+		"a.....a"
+		"aaaaaaa"
+
+		// Level 9
+		"mmmmmmm"
+		"m.....m"
+		"m......"
+		"m......"
+		"m......"
+		"m.....m"
+		"mmmmmmm"
+
+		// Level 10
+		"mmmmmmm"
+		"m.....m"
+		"m......"
+		"m......"
+		"m......"
+		"m.....m"
+		"mmmmmmm",
+		
+		// Connections:
+		"0: 3, 1, 0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"0: 6, 7, 3: 5\n"  /* Type 0, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // StairsToOpen1
+
+
+	// StairsToOpen2:
+	// The data has been exported from gallery Nether, area index 8, ID 35
+	{
+		// Size:
+		7, 10, 7,  // SizeX = 7, SizeY = 10, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+
+		// Level 2
+		"aa...aa"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"aaaaaaa"
+		"aaaaaaa"
+
+		// Level 3
+		"aa...aa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a.aaaaa"
+		"aabaaba"
+
+		// Level 4
+		"aa...aa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a..aaaa"
+		"aabaaba"
+
+		// Level 5
+		"aabbbaa"
+		"a.....a"
+		"b.....b"
+		"a.....a"
+		"b.....b"
+		"a...aaa"
+		"aabaaba"
+
+		// Level 6
+		"aaaaaaa"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a....aa"
+		"aaaaaaa"
+
+		// Level 7
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"a.....a"
+		"aaaaaaa"
+
+		// Level 8
+		"aaaaaaa"
+		"a.....a"
+		"......a"
+		"......a"
+		"......a"
+		"a.....a"
+		"aaaaaaa"
+
+		// Level 9
+		"mmmmmmm"
+		"m.....m"
+		"......m"
+		"......m"
+		"......m"
+		"m.....m"
+		"mmmmmmm"
+
+		// Level 10
+		"mmmmmmm"
+		"m.....m"
+		"......m"
+		"......m"
+		"......m"
+		"m.....m"
+		"mmmmmmm",
+		
+		// Connections:
+		"0: 3, 1, 0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"0: 0, 7, 3: 4\n"  /* Type 0, BLOCK_FACE_XM */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // StairsToOpen2
+
+
+	// Tee2x4:
+	// The data has been exported from gallery Nether, area index 40, ID 291
+	{
+		// Size:
+		13, 6, 7,  // SizeX = 13, SizeY = 6, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c:114: 0\n"  /* netherbrickstairs */
+		"d:114: 1\n"  /* netherbrickstairs */
+		"e:114: 2\n"  /* netherbrickstairs */
+		"f:114: 3\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmaaaaammmm"
+		"mmmmaaaaammmm"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"mmmma...ammmm"
+		"mmmma...ammmm"
+		"aaaaa...aaaaa"
+		"............."
+		"............."
+		"............."
+		"aaaaaaaaaaaaa"
+
+		// Level 3
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 4
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 5
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 6
+		"mmmmcaaadmmmm"
+		"mmmmcaaadmmmm"
+		"eeeecaaadeeee"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"fffffffffffff",
+
+		// Connections:
+		"1:  0, 1, 4: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1:  6, 1, 0: 2\n"  /* Type 1, BLOCK_FACE_ZM */
+		"1: 12, 1, 4: 5\n"  /* Type 1, BLOCK_FACE_XP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // Tee2x4
+
+
+	// Tee4x4:
+	// The data has been exported from gallery Nether, area index 41, ID 292
+	{
+		// Size:
+		13, 6, 9,  // SizeX = 13, SizeY = 6, SizeZ = 9
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */
+		"c:114: 0\n"  /* netherbrickstairs */
+		"d:114: 1\n"  /* netherbrickstairs */
+		"e:114: 2\n"  /* netherbrickstairs */
+		"f:114: 3\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 1
+		"mmmmaaaaammmm"
+		"mmmmaaaaammmm"
+		"mmmmaaaaammmm"
+		"mmmmaaaaammmm"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"mmmma...ammmm"
+		"mmmma...ammmm"
+		"mmmma...ammmm"
+		"mmmma...ammmm"
+		"aaaaa...aaaaa"
+		"............."
+		"............."
+		"............."
+		"aaaaaaaaaaaaa"
+
+		// Level 3
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 4
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 5
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"mmmma...ammmm"
+		"mmmmb...bmmmm"
+		"ababa...ababa"
+		"............."
+		"............."
+		"............."
+		"ababababababa"
+
+		// Level 6
+		"mmmmcaaadmmmm"
+		"mmmmcaaadmmmm"
+		"mmmmcaaadmmmm"
+		"mmmmcaaadmmmm"
+		"eeeecaaadeeee"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"fffffffffffff",
+
+		// Connections:
+		"1:  0, 1,  6: 4\n"  /* Type 1, BLOCK_FACE_XM */
+		"1: 12, 1,  6: 5\n"  /* Type 1, BLOCK_FACE_XP */
+		"1:  6, 1,  0: 2\n"  /* Type 1, BLOCK_FACE_ZM */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // Tee4x4
+
+	// Turret:
+	// The data has been exported from gallery Nether, area index 7, ID 34
+	{
+		// Size:
+		7, 6, 7,  // SizeX = 7, SizeY = 6, SizeZ = 7
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:113: 0\n"  /* netherbrickfence */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+		"aaaaaaa"
+
+		// Level 2
+		"aa...aa"
+		"a.....a"
+		"......."
+		"......."
+		"......."
+		"a.....a"
+		"aa...aa"
+
+		// Level 3
+		"aa...aa"
+		"a.....a"
+		"......."
+		"......."
+		"......."
+		"a.....a"
+		"aa...aa"
+
+		// Level 4
+		"aa...aa"
+		"a.....a"
+		"......."
+		"......."
+		"......."
+		"a.....a"
+		"aa...aa"
+
+		// Level 5
+		"aabbbaa"
+		"a.....a"
+		"b.....b"
+		"b.....b"
+		"b.....b"
+		"a.....a"
+		"aabbbaa"
+
+		// Level 6
+		"aaaaaaa"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"a.....a"
+		"aaaaaaa",
+
+		// Connections:
+		"0: 0, 1, 3: 4\n"  /* Type 0, BLOCK_FACE_XM */
+		"0: 3, 1, 0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"0: 6, 1, 3: 5\n"  /* Type 0, BLOCK_FACE_XP */
+		"0: 3, 1, 6: 3\n"  /* Type 0, BLOCK_FACE_ZP */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},  // Turret
+
+} ;  // g_NetherFortPrefabs1
+
+
+
+
+
+const cPrefab::sDef g_NetherFortStartingPrefabs1[] =
+{
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// CentralRoom:
+	// The data has been exported from gallery Nether, area index 22, ID 164
+	{
+		// Size:
+		13, 9, 13,  // SizeX = 13, SizeY = 9, SizeZ = 13
+
+		// Block definitions:
+		"a:112: 0\n"  /* netherbrick */
+		"b:  0: 0\n"  /* air */
+		"c: 10: 0\n"  /* lava */
+		"d:113: 0\n"  /* netherbrickfence */,
+
+		// Block data:
+		// Level 1
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 2
+		"aaaaabbbaaaaa"
+		"aaaaabbbaaaaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbaaabbbaa"
+		"aabbbacabbbaa"
+		"aabbbaaabbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aabbbbbbbbbaa"
+		"aaaaabbbaaaaa"
+		"aaaaabbbaaaaa"
+
+		// Level 3
+		"aaaaabbbaaaaa"
+		"aaadabbbadaaa"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"aaadabbbadaaa"
+		"aaaaabbbaaaaa"
+
+		// Level 4
+		"aaaaabbbaaaaa"
+		"aaadabbbadaaa"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"adbbbbbbbbbda"
+		"aabbbbbbbbbaa"
+		"aaadabbbadaaa"
+		"aaaaabbbaaaaa"
+
+		// Level 5
+		"adadadddadada"
+		"daaaabbbaaaad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"daaaabbbaaaad"
+		"adadabbbadada"
+
+		// Level 6
+		"adadaaaaadada"
+		"daaaaaaaaaaad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"dabbbbbbbbbad"
+		"aabbbbbbbbbaa"
+		"daaaaaaaaaaad"
+		"adadaaaaadada"
+
+		// Level 7
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 8
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+		"aaaaaaaaaaaaa"
+
+		// Level 9
+		"dadadadadadad"
+		"abbbbbbbbbbba"
+		"dbbbbbbbbbbbd"
+		"abbbbbbbbbbba"
+		"dbbbbbbbbbbbd"
+		"abbbbbbbbbbba"
+		"dbbbbbbbbbbbd"
+		"abbbbbbbbbbba"
+		"dbbbbbbbbbbbd"
+		"abbbbbbbbbbba"
+		"dbbbbbbbbbbbd"
+		"abbbbbbbbbbba"
+		"dadadadadadad",
+
+		// Connections:
+		"0: 6, 1,  0: 2\n"  /* Type 0, BLOCK_FACE_ZM */
+		"1: 6, 1, 12: 3\n"  /* Type 1, BLOCK_FACE_ZP */,
+		
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotations */
+		
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+	},
+} ;  // g_NetherFortStartingPrefabs1
+
+const size_t g_NetherFortPrefabs1Count = ARRAYCOUNT(g_NetherFortPrefabs1);
+const size_t g_NetherFortStartingPrefabs1Count = ARRAYCOUNT(g_NetherFortStartingPrefabs1);
+
+
+
+
diff --git a/src/Generating/Prefabs/NetherFortPrefabs.h b/src/Generating/Prefabs/NetherFortPrefabs.h
new file mode 100644
index 000000000..37a91689d
--- /dev/null
+++ b/src/Generating/Prefabs/NetherFortPrefabs.h
@@ -0,0 +1,15 @@
+
+// NetherFortPrefabs.h
+
+// Declares the data used for nether fortress prefabs
+
+#include "../Prefab.h"
+
+
+
+
+
+extern const cPrefab::sDef g_NetherFortPrefabs1[];
+extern const cPrefab::sDef g_NetherFortStartingPrefabs1[];
+extern const size_t g_NetherFortPrefabs1Count;
+extern const size_t g_NetherFortStartingPrefabs1Count;
diff --git a/src/Generating/Ravines.cpp b/src/Generating/Ravines.cpp
index cfda47e32..e64f55214 100644
--- a/src/Generating/Ravines.cpp
+++ b/src/Generating/Ravines.cpp
@@ -117,7 +117,7 @@ void cStructGenRavines::ClearCache(void)
 
 
 
-void cStructGenRavines::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenRavines::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
diff --git a/src/Generating/Ravines.h b/src/Generating/Ravines.h
index 05164a5b2..c76b9f19f 100644
--- a/src/Generating/Ravines.h
+++ b/src/Generating/Ravines.h
@@ -17,7 +17,7 @@
 
 
 class cStructGenRavines :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenRavines(int a_Seed, int a_Size);
@@ -37,8 +37,8 @@ protected:
 	/// Returns all ravines that *may* intersect the given chunk. All the ravines are valid until the next call to this function.
 	void GetRavinesForChunk(int a_ChunkX, int a_ChunkZ, cRavines & a_Ravines);
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
diff --git a/src/Generating/StructGen.cpp b/src/Generating/StructGen.cpp
index da6227801..db9d5578c 100644
--- a/src/Generating/StructGen.cpp
+++ b/src/Generating/StructGen.cpp
@@ -51,28 +51,10 @@ const int NEST_SIZE_GRAVEL = 32;
 
 
 
-template <typename T> T Clamp(T a_Value, T a_Min, T a_Max)
-{
-	return (a_Value < a_Min) ? a_Min : ((a_Value > a_Max) ? a_Max : a_Value);
-}
-
-
-
-
-
-static bool SortTreeBlocks(const sSetBlock & a_First, const sSetBlock & a_Second)
-{
-	return (a_First.BlockType == E_BLOCK_LOG) && (a_Second.BlockType != E_BLOCK_LOG);
-}
-
-
-
-
-
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cStructGenTrees:
 
-void cStructGenTrees::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenTrees::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
@@ -324,7 +306,7 @@ int cStructGenTrees::GetNumTrees(
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cStructGenOreNests:
 
-void cStructGenOreNests::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenOreNests::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
@@ -431,7 +413,7 @@ void cStructGenOreNests::GenerateOre(int a_ChunkX, int a_ChunkZ, BLOCKTYPE a_Ore
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cStructGenLakes:
 
-void cStructGenLakes::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenLakes::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
@@ -563,7 +545,7 @@ cStructGenDirectOverhangs::cStructGenDirectOverhangs(int a_Seed) :
 
 
 
-void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenDirectOverhangs::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	// If there is no column of the wanted biome, bail out:
 	if (!HasWantedBiome(a_ChunkDesc))
@@ -596,7 +578,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
 			m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, BaseY, BaseZ + INTERPOL_Z * z) /
 			256;
 	}  // for x, z - FloorLo[]
-	LinearUpscale2DArrayInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+	LinearUpscale2DArrayInPlace<17, 17, INTERPOL_X, INTERPOL_Z>(FloorLo);
 	
 	// Interpolate segments:
 	for (int Segment = BaseY; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -609,7 +591,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
 				m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
 				256;
 		}  // for x, z - FloorLo[]
-		LinearUpscale2DArrayInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+		LinearUpscale2DArrayInPlace<17, 17, INTERPOL_X, INTERPOL_Z>(FloorHi);
 		
 		// Interpolate between FloorLo and FloorHi:
 		for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
@@ -683,7 +665,7 @@ cStructGenDistortedMembraneOverhangs::cStructGenDistortedMembraneOverhangs(int a
 
 
 
-void cStructGenDistortedMembraneOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
+void cStructGenDistortedMembraneOverhangs::GenFinish(cChunkDesc & a_ChunkDesc)
 {
 	const NOISE_DATATYPE Frequency = (NOISE_DATATYPE)16;
 	const NOISE_DATATYPE Amount = (NOISE_DATATYPE)1;
diff --git a/src/Generating/StructGen.h b/src/Generating/StructGen.h
index 853748bb8..9176bc192 100644
--- a/src/Generating/StructGen.h
+++ b/src/Generating/StructGen.h
@@ -21,7 +21,7 @@
 
 
 class cStructGenTrees :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenTrees(int a_Seed, cBiomeGen * a_BiomeGen, cTerrainHeightGen * a_HeightGen, cTerrainCompositionGen * a_CompositionGen) :
@@ -64,8 +64,8 @@ protected:
 		const cChunkDef::BiomeMap & a_Biomes
 	);
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
@@ -73,7 +73,7 @@ protected:
 
 
 class cStructGenOreNests :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenOreNests(int a_Seed) : m_Noise(a_Seed), m_Seed(a_Seed) {}
@@ -82,8 +82,8 @@ protected:
 	cNoise m_Noise;
 	int    m_Seed;
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 	
 	void GenerateOre(int a_ChunkX, int a_ChunkZ, BLOCKTYPE a_OreType, int a_MaxHeight, int a_NumNests, int a_NestSize, cChunkDef::BlockTypes & a_BlockTypes, int a_Seq);
 } ;
@@ -93,7 +93,7 @@ protected:
 
 
 class cStructGenLakes :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenLakes(int a_Seed, BLOCKTYPE a_Fluid, cTerrainHeightGen & a_HeiGen, int a_Probability) :
@@ -112,8 +112,8 @@ protected:
 	cTerrainHeightGen & m_HeiGen;
 	int                 m_Probability;  ///< Chance, 0 .. 100, of a chunk having the lake
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 	
 	/// Creates a lake image for the specified chunk into a_Lake
 	void CreateLakeImage(int a_ChunkX, int a_ChunkZ, cBlockArea & a_Lake);
@@ -125,7 +125,7 @@ protected:
 
 
 class cStructGenDirectOverhangs :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenDirectOverhangs(int a_Seed);
@@ -134,8 +134,8 @@ protected:
 	cNoise    m_Noise1;
 	cNoise    m_Noise2;
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 
 	bool HasWantedBiome(cChunkDesc & a_ChunkDesc) const;
 } ;
@@ -145,7 +145,7 @@ protected:
 
 
 class cStructGenDistortedMembraneOverhangs :
-	public cStructureGen
+	public cFinishGen
 {
 public:
 	cStructGenDistortedMembraneOverhangs(int a_Seed);
@@ -156,8 +156,8 @@ protected:
 	cNoise m_NoiseZ;
 	cNoise m_NoiseH;
 	
-	// cStructureGen override:
-	virtual void GenStructures(cChunkDesc & a_ChunkDesc) override;
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
 } ;
 
 
diff --git a/src/Generating/Trees.cpp b/src/Generating/Trees.cpp
index 7e8a3c75f..4909587b1 100644
--- a/src/Generating/Trees.cpp
+++ b/src/Generating/Trees.cpp
@@ -382,6 +382,24 @@ void GetBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Nois
 
 
 
+void GetAcaciaTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// TODO
+}
+
+
+
+
+
+void GetDarkoakTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
+{
+	// TODO
+}
+
+
+
+
+
 void GetTallBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks)
 {
 	int Height = 9 + (a_Noise.IntNoise3DInt(a_BlockX + 64 * a_Seq, a_BlockY, a_BlockZ) % 3);
@@ -577,7 +595,7 @@ void GetPineTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise
 		{
 			break;
 		}
-		ASSERT(LayerSize < ARRAYCOUNT(BigOs));
+		ASSERT((size_t)LayerSize < ARRAYCOUNT(BigOs));
 		PushCoordBlocks(a_BlockX, h, a_BlockZ, a_OtherBlocks, BigOs[LayerSize].Coords, BigOs[LayerSize].Count, E_BLOCK_LEAVES, E_META_LEAVES_CONIFER);
 		h--;
 	}
diff --git a/src/Generating/Trees.h b/src/Generating/Trees.h
index 514158eb7..00f343a3d 100644
--- a/src/Generating/Trees.h
+++ b/src/Generating/Trees.h
@@ -63,6 +63,12 @@ void GetLargeAppleTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a
 /// Generates an image of a random birch tree
 void GetBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);
 
+/// Generates an image of a random acacia tree
+void GetAcaciaTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);
+
+/// Generates an image of a random darkoak tree
+void GetDarkoakTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);
+
 /// Generates an image of a random large birch tree
 void GetTallBirchTreeImage(int a_BlockX, int a_BlockY, int a_BlockZ, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks,sSetBlockVector & a_OtherBlocks);