10 files changed, 474 insertions, 57 deletions

diff --git a/src/Generating/CMakeLists.txt b/src/Generating/CMakeLists.txt
index 58df9d421..33d622b42 100644
--- a/src/Generating/CMakeLists.txt
+++ b/src/Generating/CMakeLists.txt
@@ -12,6 +12,7 @@ SET (SRCS
 	CompoGen.cpp
 	ComposableGenerator.cpp
 	DistortedHeightmap.cpp
+	DungeonRoomsFinisher.cpp
 	EndGen.cpp
 	FinishGen.cpp
 	GridStructGen.cpp
@@ -40,6 +41,7 @@ SET (HDRS
 	CompoGen.h
 	ComposableGenerator.h
 	DistortedHeightmap.h
+	DungeonRoomsFinisher.h
 	EndGen.h
 	FinishGen.h
 	GridStructGen.h
diff --git a/src/Generating/Caves.cpp b/src/Generating/Caves.cpp
index 6fc371958..71154dff9 100644
--- a/src/Generating/Caves.cpp
+++ b/src/Generating/Caves.cpp
@@ -166,6 +166,9 @@ cCaveTunnel::cCaveTunnel(
 	if ((a_BlockStartY <= 0) && (a_BlockEndY <= 0))
 	{
 		// Don't bother detailing this cave, it's under the world anyway
+		m_MinBlockX = m_MaxBlockX = 0;
+		m_MinBlockY = m_MaxBlockY = -1;
+		m_MinBlockZ = m_MaxBlockZ = 0;
 		return;
 	}
 
diff --git a/src/Generating/ChunkGenerator.cpp b/src/Generating/ChunkGenerator.cpp
index 3d5af152c..a1188f984 100644
--- a/src/Generating/ChunkGenerator.cpp
+++ b/src/Generating/ChunkGenerator.cpp
@@ -27,6 +27,7 @@ const unsigned int QUEUE_SKIP_LIMIT = 500;
 
 cChunkGenerator::cChunkGenerator(void) :
 	super("cChunkGenerator"),
+	m_Seed(0),  // Will be overwritten by the actual generator
 	m_Generator(NULL),
 	m_PluginInterface(NULL),
 	m_ChunkSink(NULL)
diff --git a/src/Generating/ComposableGenerator.cpp b/src/Generating/ComposableGenerator.cpp
index cedb9aeb7..6f4007d24 100644
--- a/src/Generating/ComposableGenerator.cpp
+++ b/src/Generating/ComposableGenerator.cpp
@@ -19,6 +19,7 @@
 
 #include "Caves.h"
 #include "DistortedHeightmap.h"
+#include "DungeonRoomsFinisher.h"
 #include "EndGen.h"
 #include "MineShafts.h"
 #include "NetherFortGen.h"
@@ -343,6 +344,14 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			float Threshold = (float)a_IniFile.GetValueSetF("Generator", "DualRidgeCavesThreshold", 0.3);
 			m_FinishGens.push_back(new cStructGenDualRidgeCaves(Seed, Threshold));
 		}
+		else if (NoCaseCompare(*itr, "DungeonRooms") == 0)
+		{
+			int     GridSize      = a_IniFile.GetValueSetI("Generator", "DungeonRoomsGridSize", 48);
+			int     MaxSize       = a_IniFile.GetValueSetI("Generator", "DungeonRoomsMaxSize", 7);
+			int     MinSize       = a_IniFile.GetValueSetI("Generator", "DungeonRoomsMinSize", 5);
+			AString HeightDistrib = a_IniFile.GetValueSet ("Generator", "DungeonRoomsHeightDistrib", "0, 0; 10, 10; 11, 500; 40, 500; 60, 40; 90, 1");
+			m_FinishGens.push_back(new cDungeonRoomsFinisher(*m_HeightGen, Seed, GridSize, MaxSize, MinSize, HeightDistrib));
+		}
 		else if (NoCaseCompare(*itr, "Ice") == 0)
 		{
 			m_FinishGens.push_back(new cFinishGenIce);
@@ -387,6 +396,28 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 
 			m_FinishGens.push_back(new cFinishGenSingleTopBlock(Seed, E_BLOCK_LILY_PAD, AllowedBiomes, 4, AllowedBlocks));
 		}
+		else if (NoCaseCompare(*itr, "NaturalPatches") == 0)
+		{
+			cStructGenOreNests::OreList Ores;
+
+			// Dirt vein
+			cStructGenOreNests::OreInfo DirtVein;
+			DirtVein.BlockType = E_BLOCK_DIRT;
+			DirtVein.MaxHeight = 127;
+			DirtVein.NumNests = 20;
+			DirtVein.NestSize = 32;
+			Ores.push_back(DirtVein);
+
+			// Gravel vein
+			cStructGenOreNests::OreInfo GravelVein;
+			GravelVein.BlockType = E_BLOCK_DIRT;
+			GravelVein.MaxHeight = 127;
+			GravelVein.NumNests = 20;
+			GravelVein.NestSize = 32;
+			Ores.push_back(GravelVein);
+
+			m_FinishGens.push_back(new cStructGenOreNests(Seed, Ores, E_BLOCK_STONE));
+		}
 		else if (NoCaseCompare(*itr, "NetherClumpFoliage") == 0)
 		{
 			m_FinishGens.push_back(new cFinishGenNetherClumpFoliage(Seed));
@@ -398,9 +429,74 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 			int MaxDepth  = a_IniFile.GetValueSetI("Generator", "NetherFortsMaxDepth", 12);
 			m_FinishGens.push_back(new cNetherFortGen(Seed, GridSize, MaxOffset, MaxDepth));
 		}
+		else if (NoCaseCompare(*itr, "NetherOreNests") == 0)
+		{
+			cStructGenOreNests::OreList Ores;
+
+			// Quartz vein
+			cStructGenOreNests::OreInfo QuartzVein;
+			QuartzVein.BlockType = E_BLOCK_NETHER_QUARTZ_ORE;
+			QuartzVein.MaxHeight = 255;
+			QuartzVein.NumNests = 80;
+			QuartzVein.NestSize = 8;
+			Ores.push_back(QuartzVein);
+
+			m_FinishGens.push_back(new cStructGenOreNests(Seed, Ores, E_BLOCK_NETHERRACK));
+
+		}
 		else if (NoCaseCompare(*itr, "OreNests") == 0)
 		{
-			m_FinishGens.push_back(new cStructGenOreNests(Seed));
+			cStructGenOreNests::OreList Ores;
+
+			// Coal vein
+			cStructGenOreNests::OreInfo CoalVein;
+			CoalVein.BlockType = E_BLOCK_COAL_ORE;
+			CoalVein.MaxHeight = 127;
+			CoalVein.NumNests  = 50;
+			CoalVein.NestSize  = 10;
+			Ores.push_back(CoalVein);
+
+			// Iron vein
+			cStructGenOreNests::OreInfo IronVein;
+			IronVein.BlockType = E_BLOCK_IRON_ORE;
+			IronVein.MaxHeight = 64;
+			IronVein.NumNests  = 14;
+			IronVein.NestSize  = 6;
+			Ores.push_back(IronVein);
+
+			// Gold vein
+			cStructGenOreNests::OreInfo GoldVein;
+			GoldVein.BlockType = E_BLOCK_GOLD_ORE;
+			GoldVein.MaxHeight = 32;
+			GoldVein.NumNests = 2;
+			GoldVein.NestSize = 6;
+			Ores.push_back(GoldVein);
+
+			// Redstone vein
+			cStructGenOreNests::OreInfo RedstoneVein;
+			RedstoneVein.BlockType = E_BLOCK_REDSTONE_ORE;
+			RedstoneVein.MaxHeight = 16;
+			RedstoneVein.NumNests = 4;
+			RedstoneVein.NestSize = 6;
+			Ores.push_back(RedstoneVein);
+
+			// Lapis vein
+			cStructGenOreNests::OreInfo LapisVein;
+			LapisVein.BlockType = E_BLOCK_LAPIS_ORE;
+			LapisVein.MaxHeight = 30;
+			LapisVein.NumNests = 2;
+			LapisVein.NestSize = 5;
+			Ores.push_back(LapisVein);
+
+			// Diamond vein
+			cStructGenOreNests::OreInfo DiamondVein;
+			DiamondVein.BlockType = E_BLOCK_DIAMOND_ORE;
+			DiamondVein.MaxHeight = 15;
+			DiamondVein.NumNests = 1;
+			DiamondVein.NestSize = 4;
+			Ores.push_back(DiamondVein);
+
+			m_FinishGens.push_back(new cStructGenOreNests(Seed, Ores, E_BLOCK_STONE));
 		}
 		else if (NoCaseCompare(*itr, "POCPieces") == 0)
 		{
diff --git a/src/Generating/DungeonRoomsFinisher.cpp b/src/Generating/DungeonRoomsFinisher.cpp
new file mode 100644
index 000000000..f213455d6
--- /dev/null
+++ b/src/Generating/DungeonRoomsFinisher.cpp
@@ -0,0 +1,279 @@
+
+// DungeonRoomsFinisher.cpp
+
+// Declares the cDungeonRoomsFinisher class representing the finisher that generates dungeon rooms
+
+#include "Globals.h"
+#include "DungeonRoomsFinisher.h"
+#include "../FastRandom.h"
+
+
+
+
+
+/** Height, in blocks, of the internal dungeon room open space. This many air blocks Y-wise. */
+static const int ROOM_HEIGHT = 4;
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cDungeonRoom:
+
+class cDungeonRoom :
+	public cGridStructGen::cStructure
+{
+	typedef cGridStructGen::cStructure super;
+
+public:
+
+	cDungeonRoom(
+		int a_GridX, int a_GridZ,
+		int a_OriginX, int a_OriginZ,
+		int a_HalfSizeX, int a_HalfSizeZ,
+		int a_FloorHeight,
+		cNoise & a_Noise
+	) :
+		super(a_GridX, a_GridZ, a_OriginX, a_OriginZ),
+		m_StartX(a_OriginX - a_HalfSizeX),
+		m_EndX(a_OriginX + a_HalfSizeX),
+		m_StartZ(a_OriginZ - a_HalfSizeZ),
+		m_EndZ(a_OriginZ + a_HalfSizeZ),
+		m_FloorHeight(a_FloorHeight)
+	{
+		/*
+		Pick coords next to the wall for the chests.
+		This is done by indexing the possible coords, picking any one for the first chest
+		and then picking another position for the second chest that is not adjacent to the first pos
+		*/
+		int rnd = a_Noise.IntNoise2DInt(a_OriginX, a_OriginZ) / 7;
+		int SizeX = m_EndX - m_StartX - 1;
+		int SizeZ = m_EndZ - m_StartZ - 1;
+		int NumPositions = 2 * SizeX + 2 * SizeZ;
+		int FirstChestPos = rnd % NumPositions;  // The corner positions are a bit more likely, but we don't mind
+		rnd = rnd / 512;
+		int SecondChestPos = (FirstChestPos + 2 + (rnd % (NumPositions - 3))) % NumPositions;
+		m_Chest1 = DecodeChestCoords(FirstChestPos,  SizeX, SizeZ);
+		m_Chest2 = DecodeChestCoords(SecondChestPos, SizeX, SizeZ);
+	}
+
+protected:
+
+	// The X range of the room, start inclusive, end exclusive:
+	int m_StartX, m_EndX;
+
+	// The Z range of the room, start inclusive, end exclusive:
+	int m_StartZ, m_EndZ;
+
+	/** The Y coord of the floor of the room */
+	int m_FloorHeight;
+
+	/** The (absolute) coords of the first chest. The Y coord represents the chest's Meta value (facing). */
+	Vector3i m_Chest1;
+
+	/** The (absolute) coords of the second chest. The Y coord represents the chest's Meta value (facing). */
+	Vector3i m_Chest2;
+
+
+
+	/** Decodes the position index along the room walls into a proper 2D position for a chest. */
+	Vector3i DecodeChestCoords(int a_PosIdx, int a_SizeX, int a_SizeZ)
+	{
+		if (a_PosIdx < a_SizeX)
+		{
+			// Return a coord on the ZM side of the room:
+			return Vector3i(m_StartX + a_PosIdx + 1, E_META_CHEST_FACING_ZP, m_StartZ + 1);
+		}
+		a_PosIdx -= a_SizeX;
+		if (a_PosIdx < a_SizeZ)
+		{
+			// Return a coord on the XP side of the room:
+			return Vector3i(m_EndX - 1, E_META_CHEST_FACING_XM, m_StartZ + a_PosIdx + 1);
+		}
+		a_PosIdx -= a_SizeZ;
+		if (a_PosIdx < a_SizeX)
+		{
+			// Return a coord on the ZP side of the room:
+			return Vector3i(m_StartX + a_PosIdx + 1, E_META_CHEST_FACING_ZM, m_StartZ + 1);
+		}
+		a_PosIdx -= a_SizeX;
+		// Return a coord on the XM side of the room:
+		return Vector3i(m_StartX + 1, E_META_CHEST_FACING_XP, m_StartZ + a_PosIdx + 1);
+	}
+
+
+
+	/** Fills the specified area of blocks in the chunk with the specified blocktype if they are one of the overwritten block types.
+	The coords are absolute, start coords are inclusive, end coords are exclusive. */
+	void ReplaceCuboid(cChunkDesc & a_ChunkDesc, int a_StartX, int a_StartY, int a_StartZ, int a_EndX, int a_EndY, int a_EndZ, BLOCKTYPE a_DstBlockType)
+	{
+		int BlockX = a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		int BlockZ = a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+		int RelStartX = Clamp(a_StartX - BlockX, 0, cChunkDef::Width - 1);
+		int RelStartZ = Clamp(a_StartZ - BlockZ, 0, cChunkDef::Width - 1);
+		int RelEndX   = Clamp(a_EndX - BlockX,   0, cChunkDef::Width);
+		int RelEndZ   = Clamp(a_EndZ - BlockZ,   0, cChunkDef::Width);
+		for (int y = a_StartY; y < a_EndY; y++)
+		{
+			for (int z = RelStartZ; z < RelEndZ; z++)
+			{
+				for (int x = RelStartX; x < RelEndX; x++)
+				{
+					if (cBlockInfo::CanBeTerraformed(a_ChunkDesc.GetBlockType(x, y, z)))
+					{
+						a_ChunkDesc.SetBlockType(x, y, z, a_DstBlockType);
+					}
+				}  // for x
+			}  // for z
+		}  // for z
+	}
+
+
+
+	/** Fills the specified area of blocks in the chunk with a random pattern of the specified blocktypes, if they are one of the overwritten block types.
+	The coords are absolute, start coords are inclusive, end coords are exclusive. The first blocktype uses 75% chance, the second 25% chance. */
+	void ReplaceCuboidRandom(cChunkDesc & a_ChunkDesc, int a_StartX, int a_StartY, int a_StartZ, int a_EndX, int a_EndY, int a_EndZ, BLOCKTYPE a_DstBlockType1, BLOCKTYPE a_DstBlockType2)
+	{
+		int BlockX = a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		int BlockZ = a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+		int RelStartX = Clamp(a_StartX - BlockX, 0, cChunkDef::Width - 1);
+		int RelStartZ = Clamp(a_StartZ - BlockZ, 0, cChunkDef::Width - 1);
+		int RelEndX   = Clamp(a_EndX - BlockX,   0, cChunkDef::Width);
+		int RelEndZ   = Clamp(a_EndZ - BlockZ,   0, cChunkDef::Width);
+		cFastRandom rnd;
+		for (int y = a_StartY; y < a_EndY; y++)
+		{
+			for (int z = RelStartZ; z < RelEndZ; z++)
+			{
+				for (int x = RelStartX; x < RelEndX; x++)
+				{
+					if (cBlockInfo::CanBeTerraformed(a_ChunkDesc.GetBlockType(x, y, z)))
+					{
+						BLOCKTYPE BlockType = (rnd.NextInt(101) < 75) ? a_DstBlockType1 : a_DstBlockType2;
+						a_ChunkDesc.SetBlockType(x, y, z, BlockType);
+					}
+				}  // for x
+			}  // for z
+		}  // for z
+	}
+
+
+
+	/** Tries to place a chest at the specified (absolute) coords.
+	Does nothing if the coords are outside the chunk. */
+	void TryPlaceChest(cChunkDesc & a_ChunkDesc, const Vector3i & a_Chest)
+	{
+		int RelX = a_Chest.x - a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		int RelZ = a_Chest.z - a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+		if (
+			(RelX < 0) || (RelX >= cChunkDef::Width) ||  // The X coord is not in this chunk
+			(RelZ < 0) || (RelZ >= cChunkDef::Width)     // The Z coord is not in this chunk
+		)
+		{
+			return;
+		}
+		a_ChunkDesc.SetBlockTypeMeta(RelX, m_FloorHeight + 1, RelZ, E_BLOCK_CHEST, (NIBBLETYPE)a_Chest.y);
+
+		// TODO: Fill the chest with random loot
+	}
+
+
+
+	// cGridStructGen::cStructure override:
+	virtual void DrawIntoChunk(cChunkDesc & a_ChunkDesc) override
+	{
+		if (
+			(m_EndX   <  a_ChunkDesc.GetChunkX() * cChunkDef::Width) ||
+			(m_StartX >= a_ChunkDesc.GetChunkX() * cChunkDef::Width + cChunkDef::Width) ||
+			(m_EndZ   <  a_ChunkDesc.GetChunkZ() * cChunkDef::Width) ||
+			(m_StartZ >= a_ChunkDesc.GetChunkZ() * cChunkDef::Width + cChunkDef::Width)
+		)
+		{
+			// The chunk is not intersecting the room at all, bail out
+			return;
+		}
+		int b = m_FloorHeight + 1;  // Bottom
+		int t = m_FloorHeight + 1 + ROOM_HEIGHT;  // Top
+		ReplaceCuboidRandom(a_ChunkDesc, m_StartX, m_FloorHeight, m_StartZ, m_EndX + 1, b, m_EndZ + 1, E_BLOCK_MOSSY_COBBLESTONE, E_BLOCK_COBBLESTONE);  // Floor
+		ReplaceCuboid(a_ChunkDesc, m_StartX + 1, b, m_StartZ + 1, m_EndX, t, m_EndZ, E_BLOCK_AIR);  // Insides
+
+		// Walls:
+		ReplaceCuboid(a_ChunkDesc, m_StartX, b, m_StartZ, m_StartX + 1, t, m_EndZ,       E_BLOCK_COBBLESTONE);  // XM wall
+		ReplaceCuboid(a_ChunkDesc, m_EndX,   b, m_StartZ, m_EndX + 1,   t, m_EndZ,       E_BLOCK_COBBLESTONE);  // XP wall
+		ReplaceCuboid(a_ChunkDesc, m_StartX, b, m_StartZ, m_EndX + 1,   t, m_StartZ + 1, E_BLOCK_COBBLESTONE);  // ZM wall
+		ReplaceCuboid(a_ChunkDesc, m_StartX, b, m_EndZ,   m_EndX + 1,   t, m_EndZ + 1,   E_BLOCK_COBBLESTONE);  // ZP wall
+
+		// Place chests:
+		TryPlaceChest(a_ChunkDesc, m_Chest1);
+		TryPlaceChest(a_ChunkDesc, m_Chest2);
+
+		// Place the spawner:
+		int CenterX = (m_StartX + m_EndX) / 2 - a_ChunkDesc.GetChunkX() * cChunkDef::Width;
+		int CenterZ = (m_StartZ + m_EndZ) / 2 - a_ChunkDesc.GetChunkZ() * cChunkDef::Width;
+		if (
+			(CenterX >= 0) && (CenterX < cChunkDef::Width) &&
+			(CenterZ >= 0) && (CenterZ < cChunkDef::Width)
+		)
+		{
+			a_ChunkDesc.SetBlockTypeMeta(CenterX, b, CenterZ, E_BLOCK_MOB_SPAWNER, 0);
+			// TODO: Set the spawned mob
+		}
+	}
+} ;
+
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cDungeonRoomsFinisher:
+
+cDungeonRoomsFinisher::cDungeonRoomsFinisher(cTerrainHeightGen & a_HeightGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib) :
+	super(a_Seed + 100, a_GridSize, a_GridSize, a_GridSize, a_GridSize, a_MaxSize, a_MaxSize, 1024),
+	m_HeightGen(a_HeightGen),
+	m_MaxHalfSize((a_MaxSize + 1) / 2),
+	m_MinHalfSize((a_MinSize + 1) / 2),
+	m_HeightProbability(cChunkDef::Height)
+{
+	// Initialize the height probability distribution:
+	m_HeightProbability.SetDefString(a_HeightDistrib);
+
+	// Normalize the min and max size:
+	if (m_MinHalfSize > m_MaxHalfSize)
+	{
+		std::swap(m_MinHalfSize, m_MaxHalfSize);
+	}
+}
+
+
+
+
+
+
+cDungeonRoomsFinisher::cStructurePtr cDungeonRoomsFinisher::CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ)
+{
+	// Select a random room size in each direction:
+	int rnd = m_Noise.IntNoise2DInt(a_OriginX, a_OriginZ) / 7;
+	int HalfSizeX = m_MinHalfSize + (rnd % (m_MaxHalfSize - m_MinHalfSize + 1));
+	rnd = rnd / 32;
+	int HalfSizeZ = m_MinHalfSize + (rnd % (m_MaxHalfSize - m_MinHalfSize + 1));
+	rnd = rnd / 32;
+
+	// Select a random floor height for the room, based on the height generator:
+	int ChunkX, ChunkZ;
+	int RelX = a_OriginX, RelY = 0, RelZ = a_OriginZ;
+	cChunkDef::AbsoluteToRelative(RelX, RelY, RelZ, ChunkX, ChunkZ);
+	cChunkDef::HeightMap HeightMap;
+	m_HeightGen.GenHeightMap(ChunkX, ChunkZ, HeightMap);
+	int Height = cChunkDef::GetHeight(HeightMap, RelX, RelZ);  // Max room height at {a_OriginX, a_OriginZ}
+	Height = Clamp(m_HeightProbability.MapValue(rnd % m_HeightProbability.GetSum()), 10, Height - 5);
+
+	// Create the dungeon room descriptor:
+	return cStructurePtr(new cDungeonRoom(a_GridX, a_GridZ, a_OriginX, a_OriginZ, HalfSizeX, HalfSizeZ, Height, m_Noise));
+}
+
+
+
+
diff --git a/src/Generating/DungeonRoomsFinisher.h b/src/Generating/DungeonRoomsFinisher.h
new file mode 100644
index 000000000..2b52c9de6
--- /dev/null
+++ b/src/Generating/DungeonRoomsFinisher.h
@@ -0,0 +1,52 @@
+
+// DungeonRoomsFinisher.h
+
+// Declares the cDungeonRoomsFinisher class representing the finisher that generates dungeon rooms
+
+
+
+
+
+#pragma once
+
+#include "GridStructGen.h"
+#include "../ProbabDistrib.h"
+
+
+
+
+
+class cDungeonRoomsFinisher :
+	public cGridStructGen
+{
+	typedef cGridStructGen super;
+
+public:
+	/** Creates a new dungeon room finisher.
+	a_HeightGen is the underlying height generator, so that the rooms can always be placed under the terrain.
+	a_MaxSize and a_MinSize are the maximum and minimum sizes of the room's internal (air) area, in blocks across.
+	a_HeightDistrib is the string defining the height distribution for the rooms (cProbabDistrib format). */
+	cDungeonRoomsFinisher(cTerrainHeightGen & a_HeightGen, int a_Seed, int a_GridSize, int a_MaxSize, int a_MinSize, const AString & a_HeightDistrib);
+
+protected:
+
+	/** The height gen that is used for limiting the rooms' Y coords */
+	cTerrainHeightGen & m_HeightGen;
+
+	/** Maximum half-size (from center to wall) of the dungeon room's inner (air) area. Default is 3 (vanilla). */
+	int m_MaxHalfSize;
+
+	/** Minimum half-size (from center to wall) of the dungeon room's inner (air) area. Default is 2 (vanilla). */
+	int m_MinHalfSize;
+
+	/** The height probability distribution to make the spawners more common in layers 10 - 40, less common outside this range. */
+	cProbabDistrib m_HeightProbability;
+
+
+	// cGridStructGen overrides:
+	virtual cStructurePtr CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ) override;
+} ;
+
+
+
+
diff --git a/src/Generating/FinishGen.cpp b/src/Generating/FinishGen.cpp
index e8324095e..eb57a5faa 100644
--- a/src/Generating/FinishGen.cpp
+++ b/src/Generating/FinishGen.cpp
@@ -484,8 +484,6 @@ int cFinishGenSingleTopBlock::GetNumToGen(const cChunkDef::BiomeMap & a_BiomeMap
 
 void cFinishGenSingleTopBlock::GenFinish(cChunkDesc & a_ChunkDesc)
 {
-	// Add Lilypads on top of water surface in Swampland
-
 	int NumToGen = GetNumToGen(a_ChunkDesc.GetBiomeMap());
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp
index ba11b31b4..79d529a6a 100644
--- a/src/Generating/HeiGen.cpp
+++ b/src/Generating/HeiGen.cpp
@@ -239,7 +239,13 @@ bool cHeiGenCache::GetHeightAt(int a_ChunkX, int a_ChunkZ, int a_RelX, int a_Rel
 
 cHeiGenClassic::cHeiGenClassic(int a_Seed) :
 	m_Seed(a_Seed),
-	m_Noise(a_Seed)
+	m_Noise(a_Seed),
+	m_HeightFreq1(1.0f),
+	m_HeightAmp1(1.0f),
+	m_HeightFreq2(0.5f),
+	m_HeightAmp2(0.5f),
+	m_HeightFreq3(0.1f),
+	m_HeightAmp3(0.1f)
 {
 }
 
@@ -432,7 +438,7 @@ const cHeiGenBiomal::sGenParam cHeiGenBiomal::m_GenParam[256] =
 	/* biExtremeHillsM        */ { 0.1f,   2.0f,  0.05f,    12.0f,  0.01f,   10.0f,  40},  // 131
 	/* biFlowerForest         */ { 0.1f,   2.0f,  0.05f,    12.0f,  0.01f,   10.0f,  40},  // 132
 	/* biTaigaM               */ { 0.1f,   2.0f,  0.05f,    12.0f,  0.01f,   10.0f,  40},  // 133
-	/* biSwamplandM           */ { 1.0f,   2.0f,  1.10f,     5.0f,  0.01f,    8.0f,  60},  // 134
+	/* biSwamplandM           */ { 1.0f,   3.0f,  1.10f,     7.0f,  0.01f,   0.01f,  60},  // 134
 	
 	// Biomes 135 .. 139 unused, 5 empty placeholders here:
 	{}, {}, {}, {}, {},                                                                    // 135 .. 139
diff --git a/src/Generating/StructGen.cpp b/src/Generating/StructGen.cpp
index f7e609353..731324b0d 100644
--- a/src/Generating/StructGen.cpp
+++ b/src/Generating/StructGen.cpp
@@ -13,45 +13,6 @@
 
 
 ////////////////////////////////////////////////////////////////////////////////
-// cStructGenOreNests configuration:
-
-const int MAX_HEIGHT_COAL = 127;
-const int NUM_NESTS_COAL = 50;
-const int NEST_SIZE_COAL = 10;
-
-const int MAX_HEIGHT_IRON = 64;
-const int NUM_NESTS_IRON = 14;
-const int NEST_SIZE_IRON = 6;
-
-const int MAX_HEIGHT_REDSTONE = 16;
-const int NUM_NESTS_REDSTONE = 4;
-const int NEST_SIZE_REDSTONE = 6;
-
-const int MAX_HEIGHT_GOLD = 32;
-const int NUM_NESTS_GOLD = 2;
-const int NEST_SIZE_GOLD = 6;
-
-const int MAX_HEIGHT_DIAMOND = 15;
-const int NUM_NESTS_DIAMOND = 1;
-const int NEST_SIZE_DIAMOND = 4;
-
-const int MAX_HEIGHT_LAPIS = 30;
-const int NUM_NESTS_LAPIS = 2;
-const int NEST_SIZE_LAPIS = 5;
-
-const int MAX_HEIGHT_DIRT = 127;
-const int NUM_NESTS_DIRT = 20;
-const int NEST_SIZE_DIRT = 32;
-
-const int MAX_HEIGHT_GRAVEL = 70;
-const int NUM_NESTS_GRAVEL = 15;
-const int NEST_SIZE_GRAVEL = 32;
-
-
-
-
-
-////////////////////////////////////////////////////////////////////////////////
 // cStructGenTrees:
 
 void cStructGenTrees::GenFinish(cChunkDesc & a_ChunkDesc)
@@ -311,14 +272,15 @@ void cStructGenOreNests::GenFinish(cChunkDesc & a_ChunkDesc)
 	int ChunkX = a_ChunkDesc.GetChunkX();
 	int ChunkZ = a_ChunkDesc.GetChunkZ();
 	cChunkDef::BlockTypes & BlockTypes = a_ChunkDesc.GetBlockTypes();
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_COAL_ORE,     MAX_HEIGHT_COAL,     NUM_NESTS_COAL,     NEST_SIZE_COAL,     BlockTypes, 1);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_IRON_ORE,     MAX_HEIGHT_IRON,     NUM_NESTS_IRON,     NEST_SIZE_IRON,     BlockTypes, 2);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_REDSTONE_ORE, MAX_HEIGHT_REDSTONE, NUM_NESTS_REDSTONE, NEST_SIZE_REDSTONE, BlockTypes, 3);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_GOLD_ORE,     MAX_HEIGHT_GOLD,     NUM_NESTS_GOLD,     NEST_SIZE_GOLD,     BlockTypes, 4);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_DIAMOND_ORE,  MAX_HEIGHT_DIAMOND,  NUM_NESTS_DIAMOND,  NEST_SIZE_DIAMOND,  BlockTypes, 5);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_LAPIS_ORE,    MAX_HEIGHT_LAPIS,    NUM_NESTS_LAPIS,    NEST_SIZE_LAPIS,    BlockTypes, 6);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_DIRT,         MAX_HEIGHT_DIRT,     NUM_NESTS_DIRT,     NEST_SIZE_DIRT,     BlockTypes, 10);
-	GenerateOre(ChunkX, ChunkZ, E_BLOCK_GRAVEL,       MAX_HEIGHT_GRAVEL,   NUM_NESTS_GRAVEL,   NEST_SIZE_GRAVEL,   BlockTypes, 11);
+
+	int seq = 1;
+	
+	// Generate the ores from the ore list.
+	for (OreList::const_iterator itr = m_OreList.begin(); itr != m_OreList.end(); ++itr)
+	{
+		GenerateOre(ChunkX, ChunkZ, itr->BlockType, itr->MaxHeight, itr->NumNests, itr->NestSize, BlockTypes, seq);
+		seq++;
+	}
 }
 
 
@@ -376,7 +338,7 @@ void cStructGenOreNests::GenerateOre(int a_ChunkX, int a_ChunkZ, BLOCKTYPE a_Ore
 						}
 
 						int Index = cChunkDef::MakeIndexNoCheck(BlockX, BlockY, BlockZ);
-						if (a_BlockTypes[Index] == E_BLOCK_STONE)
+						if (a_BlockTypes[Index] == m_ToReplace)
 						{
 							a_BlockTypes[Index] = a_OreType;
 						}
diff --git a/src/Generating/StructGen.h b/src/Generating/StructGen.h
index 9176bc192..55d5bc1c7 100644
--- a/src/Generating/StructGen.h
+++ b/src/Generating/StructGen.h
@@ -76,11 +76,29 @@ class cStructGenOreNests :
 	public cFinishGen
 {
 public:
-	cStructGenOreNests(int a_Seed) : m_Noise(a_Seed), m_Seed(a_Seed) {}
-	
+	struct OreInfo
+	{
+		BLOCKTYPE BlockType;  // The type of the nest.
+		int       MaxHeight;  // The highest possible a nest can occur
+		int       NumNests;   // How many nests per chunk
+		int       NestSize;   // The amount of blocks a nest can have.
+	};
+
+	typedef std::vector<OreInfo> OreList;
+
+	cStructGenOreNests(int a_Seed, OreList a_OreList, BLOCKTYPE a_ToReplace) :
+		m_Noise(a_Seed),
+		m_Seed(a_Seed),
+		m_OreList(a_OreList),
+		m_ToReplace(a_ToReplace)
+	{}
+
 protected:
-	cNoise m_Noise;
-	int    m_Seed;
+	cNoise  m_Noise;
+	int     m_Seed;
+
+	OreList   m_OreList;  // A list of possible ores.
+	BLOCKTYPE m_ToReplace;
 	
 	// cFinishGen override:
 	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;