18 files changed, 237 insertions, 230 deletions

diff --git a/src/Bindings/LuaChunkStay.cpp b/src/Bindings/LuaChunkStay.cpp
index 59b02d8f7..154bcb200 100644
--- a/src/Bindings/LuaChunkStay.cpp
+++ b/src/Bindings/LuaChunkStay.cpp
@@ -107,7 +107,7 @@ void cLuaChunkStay::AddChunkCoord(cLuaState & L, int a_Index)
 		}
 	}  // for itr - m_Chunks[]
 	
-	m_Chunks.push_back(cChunkCoords(ChunkX, ZERO_CHUNK_Y, ChunkZ));
+	m_Chunks.push_back(cChunkCoords(ChunkX, ChunkZ));
 }
 
 
diff --git a/src/Chunk.cpp b/src/Chunk.cpp
index 40ffff834..95b8c8e5e 100644
--- a/src/Chunk.cpp
+++ b/src/Chunk.cpp
@@ -65,7 +65,7 @@ sSetBlock::sSetBlock( int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_Bloc
 // cChunk:
 
 cChunk::cChunk(
-	int a_ChunkX, int a_ChunkY, int a_ChunkZ,
+	int a_ChunkX, int a_ChunkZ,
 	cChunkMap * a_ChunkMap, cWorld * a_World,
 	cChunk * a_NeighborXM, cChunk * a_NeighborXP, cChunk * a_NeighborZM, cChunk * a_NeighborZP,
 	cAllocationPool<cChunkData::sChunkSection> & a_Pool
@@ -77,7 +77,6 @@ cChunk::cChunk(
 	m_HasLoadFailed(false),
 	m_StayCount(0),
 	m_PosX(a_ChunkX),
-	m_PosY(a_ChunkY),
 	m_PosZ(a_ChunkZ),
 	m_World(a_World),
 	m_ChunkMap(a_ChunkMap),
@@ -653,7 +652,7 @@ void cChunk::MoveEntityToNewChunk(cEntity * a_Entity)
 	cChunk * Neighbor = GetNeighborChunk(a_Entity->GetChunkX() * cChunkDef::Width, a_Entity->GetChunkZ() * cChunkDef::Width);
 	if (Neighbor == NULL)
 	{
-		Neighbor = m_ChunkMap->GetChunkNoLoad(a_Entity->GetChunkX(), ZERO_CHUNK_Y, a_Entity->GetChunkZ());
+		Neighbor = m_ChunkMap->GetChunkNoLoad(a_Entity->GetChunkX(), a_Entity->GetChunkZ());
 		if (Neighbor == NULL)
 		{
 			// TODO: What to do with this?
@@ -2603,7 +2602,7 @@ cChunk * cChunk::GetRelNeighborChunk(int a_RelX, int a_RelZ)
 		int BlockZ = m_PosZ * cChunkDef::Width + a_RelZ;
 		int ChunkX, ChunkZ;
 		BlockToChunk(BlockX, BlockZ, ChunkX, ChunkZ);
-		return m_ChunkMap->GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+		return m_ChunkMap->GetChunkNoLoad(ChunkX, ChunkZ);
 	}
 
 	// Walk the neighbors:
diff --git a/src/Chunk.h b/src/Chunk.h
index e5de22e3b..3b5d1254e 100644
--- a/src/Chunk.h
+++ b/src/Chunk.h
@@ -67,7 +67,7 @@ class cChunk :
 {
 public:
 	cChunk(
-		int a_ChunkX, int a_ChunkY, int a_ChunkZ,   // Chunk coords
+		int a_ChunkX, int a_ChunkZ,   // Chunk coords
 		cChunkMap * a_ChunkMap, cWorld * a_World,   // Parent objects
 		cChunk * a_NeighborXM, cChunk * a_NeighborXP, cChunk * a_NeighborZM, cChunk * a_NeighborZP,  // Neighbor chunks
 		cAllocationPool<cChunkData::sChunkSection> & a_Pool
diff --git a/src/ChunkDef.h b/src/ChunkDef.h
index b8b4291c7..f4ed66c4b 100644
--- a/src/ChunkDef.h
+++ b/src/ChunkDef.h
@@ -16,11 +16,6 @@
 
 
 
-/** This is really only a placeholder to be used in places where we need to "make up" a chunk's Y coord.
-It will help us when the new chunk format comes out and we need to patch everything up for compatibility.
-*/
-#define ZERO_CHUNK_Y 0
-
 // Used to smoothly convert to new axis ordering. One will be removed when deemed stable.
 #define AXIS_ORDER_YZX 1  // Original (1.1-)
 #define AXIS_ORDER_XZY 2  // New (1.2+)
@@ -377,14 +372,13 @@ class cChunkCoords
 {
 public:
 	int m_ChunkX;
-	int m_ChunkY;
 	int m_ChunkZ;
 	
-	cChunkCoords(int a_ChunkX, int a_ChunkY, int a_ChunkZ) : m_ChunkX(a_ChunkX), m_ChunkY(a_ChunkY), m_ChunkZ(a_ChunkZ) {}
+	cChunkCoords(int a_ChunkX, int a_ChunkZ) : m_ChunkX(a_ChunkX), m_ChunkZ(a_ChunkZ) {}
 	
 	bool operator == (const cChunkCoords & a_Other) const
 	{
-		return ((m_ChunkX == a_Other.m_ChunkX) && (m_ChunkY == a_Other.m_ChunkY) && (m_ChunkZ == a_Other.m_ChunkZ));
+		return ((m_ChunkX == a_Other.m_ChunkX) && (m_ChunkZ == a_Other.m_ChunkZ));
 	}
 } ;
 
@@ -395,6 +389,27 @@ typedef std::vector<cChunkCoords> cChunkCoordsVector;
 
 
 
+class cChunkCoordsWithBool
+{
+public:
+	int m_ChunkX;
+	int m_ChunkZ;
+	bool m_ForceGenerate;
+
+	cChunkCoordsWithBool(int a_ChunkX, int a_ChunkZ, bool a_ForceGenerate) : m_ChunkX(a_ChunkX), m_ChunkZ(a_ChunkZ), m_ForceGenerate(a_ForceGenerate){}
+
+	bool operator == (const cChunkCoordsWithBool & a_Other) const
+	{
+		return ((m_ChunkX == a_Other.m_ChunkX) && (m_ChunkZ == a_Other.m_ChunkZ) && (m_ForceGenerate == a_Other.m_ForceGenerate));
+	}
+};
+
+typedef std::list<cChunkCoordsWithBool> cChunkCoordsWithBoolList;
+
+
+
+
+
 /// Interface class used as a callback for operations that involve chunk coords
 class cChunkCoordCallback
 {
diff --git a/src/ChunkMap.cpp b/src/ChunkMap.cpp
index a3692ef11..f14d680d4 100644
--- a/src/ChunkMap.cpp
+++ b/src/ChunkMap.cpp
@@ -143,7 +143,7 @@ cChunkMap::cChunkLayer * cChunkMap::GetLayerForChunk(int a_ChunkX, int a_ChunkZ)
 
 
 
-cChunkPtr cChunkMap::GetChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+cChunkPtr cChunkMap::GetChunk(int a_ChunkX, int a_ChunkZ)
 {
 	// No need to lock m_CSLayers, since it's already locked by the operation that called us
 	ASSERT(m_CSLayers.IsLockedByCurrentThread());
@@ -155,14 +155,14 @@ cChunkPtr cChunkMap::GetChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 		return NULL;
 	}
 	
-	cChunkPtr Chunk = Layer->GetChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	cChunkPtr Chunk = Layer->GetChunk(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return NULL;
 	}
 	if (!(Chunk->IsValid()))
 	{
-		m_World->GetStorage().QueueLoadChunk(a_ChunkX, a_ChunkY, a_ChunkZ, true);
+		m_World->GetStorage().QueueLoadChunk(a_ChunkX, a_ChunkZ, true);
 	}
 	return Chunk;
 }
@@ -171,7 +171,7 @@ cChunkPtr cChunkMap::GetChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 
 
 
-cChunkPtr cChunkMap::GetChunkNoGen( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+cChunkPtr cChunkMap::GetChunkNoGen( int a_ChunkX, int a_ChunkZ)
 {
 	// No need to lock m_CSLayers, since it's already locked by the operation that called us
 	cChunkLayer * Layer = GetLayerForChunk( a_ChunkX, a_ChunkZ);
@@ -181,14 +181,14 @@ cChunkPtr cChunkMap::GetChunkNoGen( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 		return NULL;
 	}
 	
-	cChunkPtr Chunk = Layer->GetChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	cChunkPtr Chunk = Layer->GetChunk(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return NULL;
 	}
 	if (!(Chunk->IsValid()))
 	{
-		m_World->GetStorage().QueueLoadChunk(a_ChunkX, a_ChunkY, a_ChunkZ, false);
+		m_World->GetStorage().QueueLoadChunk(a_ChunkX, a_ChunkZ, false);
 	}
 	
 	return Chunk;
@@ -198,7 +198,7 @@ cChunkPtr cChunkMap::GetChunkNoGen( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 
 
 
-cChunkPtr cChunkMap::GetChunkNoLoad( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+cChunkPtr cChunkMap::GetChunkNoLoad( int a_ChunkX, int a_ChunkZ)
 {
 	// No need to lock m_CSLayers, since it's already locked by the operation that called us
 	cChunkLayer * Layer = GetLayerForChunk( a_ChunkX, a_ChunkZ);
@@ -208,7 +208,7 @@ cChunkPtr cChunkMap::GetChunkNoLoad( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 		return NULL;
 	}
 	
-	return Layer->GetChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	return Layer->GetChunk(a_ChunkX, a_ChunkZ);
 }
 
 
@@ -222,7 +222,7 @@ bool cChunkMap::LockedGetBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTY
 
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -244,7 +244,7 @@ bool cChunkMap::LockedGetBlockType(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -265,7 +265,7 @@ bool cChunkMap::LockedGetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ, NIB
 	
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -284,7 +284,7 @@ bool cChunkMap::LockedSetBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTY
 	// We already have m_CSLayers locked since this can be called only from within the tick thread
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -303,7 +303,7 @@ bool cChunkMap::LockedFastSetBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 	// We already have m_CSLayers locked since this can be called only from within the tick thread
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -336,7 +336,7 @@ cChunk * cChunkMap::FindChunk(int a_ChunkX, int a_ChunkZ)
 void cChunkMap::BroadcastAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -356,7 +356,7 @@ void cChunkMap::BroadcastBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, c
 	x = a_BlockX;
 	z = a_BlockZ;
 	cChunkDef::BlockToChunk(x, z, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -375,7 +375,7 @@ void cChunkMap::BroadcastBlockBreakAnimation(int a_entityID, int a_blockX, int a
 	int ChunkX, ChunkZ;
 
 	cChunkDef::BlockToChunk(a_blockX, a_blockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -393,7 +393,7 @@ void cChunkMap::BroadcastBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, c
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -408,7 +408,7 @@ void cChunkMap::BroadcastBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, c
 void cChunkMap::BroadcastChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, 0, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -424,7 +424,7 @@ void cChunkMap::BroadcastChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSeriali
 void cChunkMap::BroadcastCollectEntity(const cEntity & a_Entity, const cPlayer & a_Player, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -440,7 +440,7 @@ void cChunkMap::BroadcastCollectEntity(const cEntity & a_Entity, const cPlayer &
 void cChunkMap::BroadcastDestroyEntity(const cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -456,7 +456,7 @@ void cChunkMap::BroadcastDestroyEntity(const cEntity & a_Entity, const cClientHa
 void cChunkMap::BroadcastEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, short a_Duration, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -472,7 +472,7 @@ void cChunkMap::BroadcastEntityEffect(const cEntity & a_Entity, int a_EffectID,
 void cChunkMap::BroadcastEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -488,7 +488,7 @@ void cChunkMap::BroadcastEntityEquipment(const cEntity & a_Entity, short a_SlotN
 void cChunkMap::BroadcastEntityHeadLook(const cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -504,7 +504,7 @@ void cChunkMap::BroadcastEntityHeadLook(const cEntity & a_Entity, const cClientH
 void cChunkMap::BroadcastEntityLook(const cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -520,7 +520,7 @@ void cChunkMap::BroadcastEntityLook(const cEntity & a_Entity, const cClientHandl
 void cChunkMap::BroadcastEntityMetadata(const cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -536,7 +536,7 @@ void cChunkMap::BroadcastEntityMetadata(const cEntity & a_Entity, const cClientH
 void cChunkMap::BroadcastEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -552,7 +552,7 @@ void cChunkMap::BroadcastEntityRelMove(const cEntity & a_Entity, char a_RelX, ch
 void cChunkMap::BroadcastEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -568,7 +568,7 @@ void cChunkMap::BroadcastEntityRelMoveLook(const cEntity & a_Entity, char a_RelX
 void cChunkMap::BroadcastEntityStatus(const cEntity & a_Entity, char a_Status, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -584,7 +584,7 @@ void cChunkMap::BroadcastEntityStatus(const cEntity & a_Entity, char a_Status, c
 void cChunkMap::BroadcastEntityVelocity(const cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -600,7 +600,7 @@ void cChunkMap::BroadcastEntityVelocity(const cEntity & a_Entity, const cClientH
 void cChunkMap::BroadcastEntityAnimation(const cEntity & a_Entity, char a_Animation, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -619,7 +619,7 @@ void cChunkMap::BroadcastParticleEffect(const AString & a_ParticleName, float a_
 	int ChunkX, ChunkZ;
 
 	cChunkDef::BlockToChunk((int) a_SrcX, (int) a_SrcZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -636,7 +636,7 @@ void cChunkMap::BroadcastRemoveEntityEffect(const cEntity & a_Entity, int a_Effe
 {
 	cCSLock Lock(m_CSLayers);
 	
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -655,7 +655,7 @@ void cChunkMap::BroadcastSoundEffect(const AString & a_SoundName, double a_X, do
 	int ChunkX, ChunkZ;
 
 	cChunkDef::BlockToChunk((int)std::floor(a_X), (int)std::floor(a_Z), ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -674,7 +674,7 @@ void cChunkMap::BroadcastSoundParticleEffect(int a_EffectID, int a_SrcX, int a_S
 	int ChunkX, ChunkZ;
 
 	cChunkDef::BlockToChunk(a_SrcX, a_SrcZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -690,7 +690,7 @@ void cChunkMap::BroadcastSoundParticleEffect(int a_EffectID, int a_SrcX, int a_S
 void cChunkMap::BroadcastSpawnEntity(cEntity & a_Entity, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), ZERO_CHUNK_Y, a_Entity.GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity.GetChunkX(), a_Entity.GetChunkZ());
 	if (Chunk == NULL)
 	{
 		return;
@@ -708,7 +708,7 @@ void cChunkMap::BroadcastThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ, c
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -727,7 +727,7 @@ void cChunkMap::BroadcastUseBed(const cEntity & a_Entity, int a_BlockX, int a_Bl
 	int ChunkX, ChunkZ;
 
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -745,7 +745,7 @@ void cChunkMap::SendBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cClien
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -763,7 +763,7 @@ void cChunkMap::UseBlockEntity(cPlayer * a_Player, int a_BlockX, int a_BlockY, i
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -778,7 +778,7 @@ void cChunkMap::UseBlockEntity(cPlayer * a_Player, int a_BlockX, int a_BlockY, i
 bool cChunkMap::DoWithChunk(int a_ChunkX, int a_ChunkZ, cChunkCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -795,7 +795,7 @@ void cChunkMap::WakeUpSimulators(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, 0, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -824,7 +824,7 @@ void cChunkMap::WakeUpSimulatorsInArea(int a_MinBlockX, int a_MaxBlockX, int a_M
 		int MaxZ = std::min(a_MaxBlockZ, z * cChunkDef::Width + cChunkDef::Width - 1);
 		for (int x = MinChunkX; x <= MaxChunkX; x++)
 		{
-			cChunkPtr Chunk = GetChunkNoGen(x, 0, z);
+			cChunkPtr Chunk = GetChunkNoGen(x, z);
 			if ((Chunk == NULL) || !Chunk->IsValid())
 			{
 				continue;
@@ -852,7 +852,7 @@ void cChunkMap::WakeUpSimulatorsInArea(int a_MinBlockX, int a_MaxBlockX, int a_M
 void cChunkMap::MarkRedstoneDirty(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -867,7 +867,7 @@ void cChunkMap::MarkRedstoneDirty(int a_ChunkX, int a_ChunkZ)
 void cChunkMap::MarkChunkDirty(int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDirty)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -886,7 +886,7 @@ void cChunkMap::MarkChunkDirty(int a_ChunkX, int a_ChunkZ, bool a_MarkRedstoneDi
 void cChunkMap::MarkChunkSaving(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -901,7 +901,7 @@ void cChunkMap::MarkChunkSaving(int a_ChunkX, int a_ChunkZ)
 void cChunkMap::MarkChunkSaved (int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -919,7 +919,7 @@ void cChunkMap::SetChunkData(cSetChunkData & a_SetChunkData)
 	int ChunkZ = a_SetChunkData.GetChunkZ();
 	{
 		cCSLock Lock(m_CSLayers);
-		cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+		cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 		if (Chunk == NULL)
 		{
 			return;
@@ -964,7 +964,7 @@ void cChunkMap::ChunkLighted(
 )
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -980,7 +980,7 @@ void cChunkMap::ChunkLighted(
 bool cChunkMap::GetChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -996,7 +996,7 @@ bool cChunkMap::GetChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataCallback & a_
 bool cChunkMap::GetChunkBlockTypes(int a_ChunkX, int a_ChunkZ, BLOCKTYPE * a_BlockTypes)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -1012,7 +1012,7 @@ bool cChunkMap::GetChunkBlockTypes(int a_ChunkX, int a_ChunkZ, BLOCKTYPE * a_Blo
 bool cChunkMap::IsChunkValid(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	return (Chunk != NULL) && Chunk->IsValid();
 }
 
@@ -1023,7 +1023,7 @@ bool cChunkMap::IsChunkValid(int a_ChunkX, int a_ChunkZ)
 bool cChunkMap::HasChunkAnyClients(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	return (Chunk != NULL) && Chunk->HasAnyClients();
 }
 
@@ -1038,7 +1038,7 @@ int  cChunkMap::GetHeight(int a_BlockX, int a_BlockZ)
 		cCSLock Lock(m_CSLayers);
 		int ChunkX, ChunkZ, BlockY = 0;
 		cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
-		cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+		cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 		if (Chunk == NULL)
 		{
 			return 0;
@@ -1065,7 +1065,7 @@ bool cChunkMap::TryGetHeight(int a_BlockX, int a_BlockZ, int & a_Height)
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ, BlockY = 0;
 	cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -1088,7 +1088,7 @@ void cChunkMap::FastSetBlocks(sSetBlockList & a_BlockList)
 		int ChunkX = a_BlockList.front().ChunkX;
 		int ChunkZ = a_BlockList.front().ChunkZ;
 		cCSLock Lock(m_CSLayers);
-		cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+		cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 		if ((Chunk != NULL) && Chunk->IsValid())
 		{
 			for (sSetBlockList::iterator itr = a_BlockList.begin(); itr != a_BlockList.end();)
@@ -1135,7 +1135,7 @@ void cChunkMap::CollectPickupsByPlayer(cPlayer * a_Player)
 	int BlockX = (int)(a_Player->GetPosX());  // Truncating doesn't matter much; we're scanning entire chunks anyway
 	int BlockY = (int)(a_Player->GetPosY());
 	int BlockZ = (int)(a_Player->GetPosZ());
-	int ChunkX, ChunkZ, ChunkY = ZERO_CHUNK_Y;
+	int ChunkX = 0, ChunkZ = 0;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	int OtherChunkX = ChunkX + ((BlockX > 8) ? 1 : -1);
 	int OtherChunkZ = ChunkZ + ((BlockZ > 8) ? 1 : -1);
@@ -1144,13 +1144,13 @@ void cChunkMap::CollectPickupsByPlayer(cPlayer * a_Player)
 	// The only time the chunks are not valid is when the player is downloading the initial world and they should not call this at that moment
 	
 	cCSLock Lock(m_CSLayers);
-	GetChunkNoLoad(ChunkX, ChunkY, ChunkZ)->CollectPickupsByPlayer(a_Player);
+	GetChunkNoLoad(ChunkX, ChunkZ)->CollectPickupsByPlayer(a_Player);
 
 	// Check the neighboring chunks as well:
-	GetChunkNoLoad(OtherChunkX, ChunkY, ChunkZ)->CollectPickupsByPlayer     (a_Player);
-	GetChunkNoLoad(OtherChunkX, ChunkY, OtherChunkZ)->CollectPickupsByPlayer(a_Player);
-	GetChunkNoLoad(ChunkX,      ChunkY, ChunkZ)->CollectPickupsByPlayer     (a_Player);
-	GetChunkNoLoad(ChunkX,      ChunkY, OtherChunkZ)->CollectPickupsByPlayer(a_Player);
+	GetChunkNoLoad(OtherChunkX, ChunkZ)->CollectPickupsByPlayer     (a_Player);
+	GetChunkNoLoad(OtherChunkX, OtherChunkZ)->CollectPickupsByPlayer(a_Player);
+	GetChunkNoLoad(ChunkX,      ChunkZ)->CollectPickupsByPlayer     (a_Player);
+	GetChunkNoLoad(ChunkX,      OtherChunkZ)->CollectPickupsByPlayer(a_Player);
 }
 
 
@@ -1177,7 +1177,7 @@ BLOCKTYPE cChunkMap::GetBlock(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		return Chunk->GetBlock(a_BlockX, a_BlockY, a_BlockZ);
@@ -1206,7 +1206,7 @@ NIBBLETYPE cChunkMap::GetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		return Chunk->GetMeta(a_BlockX, a_BlockY, a_BlockZ);
@@ -1224,7 +1224,7 @@ NIBBLETYPE cChunkMap::GetBlockSkyLight(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		return Chunk->GetSkyLight(a_BlockX, a_BlockY, a_BlockZ);
@@ -1242,7 +1242,7 @@ NIBBLETYPE cChunkMap::GetBlockBlockLight(int a_BlockX, int a_BlockY, int a_Block
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		return Chunk->GetBlockLight(a_BlockX, a_BlockY, a_BlockZ);
@@ -1261,7 +1261,7 @@ void cChunkMap::SetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYP
 	// a_BlockXYZ now contains relative coords!
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->SetMeta(a_BlockX, a_BlockY, a_BlockZ, a_BlockMeta);
@@ -1284,7 +1284,7 @@ void cChunkMap::SetBlock(cWorldInterface & a_WorldInterface, int a_BlockX, int a
 	cChunkDef::AbsoluteToRelative( X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->SetBlock(X, Y, Z, a_BlockType, a_BlockMeta, a_SendToClients);
@@ -1303,7 +1303,7 @@ void cChunkMap::QueueSetBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYP
 	cChunkDef::AbsoluteToRelative(X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->QueueSetBlock(X, Y, Z, a_BlockType, a_BlockMeta, a_Tick, a_PreviousBlockType);
@@ -1320,7 +1320,7 @@ bool cChunkMap::GetBlockTypeMeta(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCK
 	cChunkDef::AbsoluteToRelative( X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->GetBlockTypeMeta(X, Y, Z, a_BlockType, a_BlockMeta);
@@ -1339,7 +1339,7 @@ bool cChunkMap::GetBlockInfo(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE
 	cChunkDef::AbsoluteToRelative( X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk( ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->GetBlockInfo(X, Y, Z, a_BlockType, a_Meta, a_SkyLight, a_BlockLight);
@@ -1357,7 +1357,7 @@ void cChunkMap::ReplaceBlocks(const sSetBlockVector & a_Blocks, BLOCKTYPE a_Filt
 	cCSLock Lock(m_CSLayers);
 	for (sSetBlockVector::const_iterator itr = a_Blocks.begin(); itr != a_Blocks.end(); ++itr)
 	{
-		cChunkPtr Chunk = GetChunk(itr->ChunkX, ZERO_CHUNK_Y, itr->ChunkZ);
+		cChunkPtr Chunk = GetChunk(itr->ChunkX, itr->ChunkZ);
 		if ((Chunk == NULL) || !Chunk->IsValid())
 		{
 			continue;
@@ -1378,7 +1378,7 @@ void cChunkMap::ReplaceTreeBlocks(const sSetBlockVector & a_Blocks)
 	cCSLock Lock(m_CSLayers);
 	for (sSetBlockVector::const_iterator itr = a_Blocks.begin(); itr != a_Blocks.end(); ++itr)
 	{
-		cChunkPtr Chunk = GetChunk(itr->ChunkX, ZERO_CHUNK_Y, itr->ChunkZ);
+		cChunkPtr Chunk = GetChunk(itr->ChunkX, itr->ChunkZ);
 		if ((Chunk == NULL) || !Chunk->IsValid())
 		{
 			continue;
@@ -1413,7 +1413,7 @@ EMCSBiome cChunkMap::GetBiomeAt (int a_BlockX, int a_BlockZ)
 	cChunkDef::AbsoluteToRelative(X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		return Chunk->GetBiomeAt(X, Z);
@@ -1434,7 +1434,7 @@ bool cChunkMap::SetBiomeAt(int a_BlockX, int a_BlockZ, EMCSBiome a_Biome)
 	cChunkDef::AbsoluteToRelative(X, Y, Z, ChunkX, ChunkZ);
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && Chunk->IsValid())
 	{
 		Chunk->SetBiomeAt(X, Z, a_Biome);
@@ -1467,7 +1467,7 @@ bool cChunkMap::SetAreaBiome(int a_MinX, int a_MaxX, int a_MinZ, int a_MaxZ, EMC
 		{
 			int MinRelZ = (z == MinChunkZ) ? MinZ : 0;
 			int MaxRelZ = (z == MaxChunkZ) ? MaxZ : cChunkDef::Width - 1;
-			cChunkPtr Chunk = GetChunkNoLoad(x, ZERO_CHUNK_Y, z);
+			cChunkPtr Chunk = GetChunkNoLoad(x, z);
 			if ((Chunk != NULL) && Chunk->IsValid())
 			{
 				Chunk->SetAreaBiome(MinRelX, MaxRelX, MinRelZ, MaxRelZ, a_Biome);
@@ -1491,7 +1491,7 @@ bool cChunkMap::GetBlocks(sSetBlockVector & a_Blocks, bool a_ContinueOnFailure)
 	cCSLock Lock(m_CSLayers);
 	for (sSetBlockVector::iterator itr = a_Blocks.begin(); itr != a_Blocks.end(); ++itr)
 	{
-		cChunkPtr Chunk = GetChunk(itr->ChunkX, ZERO_CHUNK_Y, itr->ChunkZ);
+		cChunkPtr Chunk = GetChunk(itr->ChunkX, itr->ChunkZ);
 		if ((Chunk == NULL) || !Chunk->IsValid())
 		{
 			if (!a_ContinueOnFailure)
@@ -1519,7 +1519,7 @@ bool cChunkMap::DigBlock(int a_X, int a_Y, int a_Z)
 
 	{
 		cCSLock Lock(m_CSLayers);
-		cChunkPtr DestChunk = GetChunk( ChunkX, ZERO_CHUNK_Y, ChunkZ);
+		cChunkPtr DestChunk = GetChunk( ChunkX, ChunkZ);
 		if ((DestChunk == NULL) || !DestChunk->IsValid())
 		{
 			return false;
@@ -1542,7 +1542,7 @@ void cChunkMap::SendBlockTo(int a_X, int a_Y, int a_Z, cPlayer * a_Player)
 	cChunkDef::AbsoluteToRelative(a_X, a_Y, a_Z, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunk(ChunkX, ChunkZ);
 	if ((Chunk != NULL) && (Chunk->IsValid()))
 	{
 		Chunk->SendBlockTo(a_X, a_Y, a_Z, a_Player->GetClientHandle());
@@ -1556,12 +1556,12 @@ void cChunkMap::SendBlockTo(int a_X, int a_Y, int a_Z, cPlayer * a_Player)
 void cChunkMap::CompareChunkClients(int a_ChunkX1, int a_ChunkZ1, int a_ChunkX2, int a_ChunkZ2, cClientDiffCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk1 = GetChunkNoGen(a_ChunkX1, ZERO_CHUNK_Y, a_ChunkZ1);
+	cChunkPtr Chunk1 = GetChunkNoGen(a_ChunkX1, a_ChunkZ1);
 	if (Chunk1 == NULL)
 	{
 		return;
 	}
-	cChunkPtr Chunk2 = GetChunkNoGen(a_ChunkX2, ZERO_CHUNK_Y, a_ChunkZ2);
+	cChunkPtr Chunk2 = GetChunkNoGen(a_ChunkX2, a_ChunkZ2);
 	if (Chunk2 == NULL)
 	{
 		return;
@@ -1623,7 +1623,7 @@ void cChunkMap::CompareChunkClients(cChunk * a_Chunk1, cChunk * a_Chunk2, cClien
 bool cChunkMap::AddChunkClient(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunk(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return false;
@@ -1638,7 +1638,7 @@ bool cChunkMap::AddChunkClient(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Cli
 void cChunkMap::RemoveChunkClient(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -1667,7 +1667,7 @@ void cChunkMap::RemoveClientFromChunks(cClientHandle * a_Client)
 void cChunkMap::AddEntity(cEntity * a_Entity)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), ZERO_CHUNK_Y, a_Entity->GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), a_Entity->GetChunkZ());
 	if (
 		(Chunk == NULL) ||  // Chunk not present at all
 		(!Chunk->IsValid() && !a_Entity->IsPlayer())  // Chunk present, but no valid data; players need to spawn in such chunks (#953)
@@ -1688,7 +1688,7 @@ void cChunkMap::AddEntity(cEntity * a_Entity)
 void cChunkMap::AddEntityIfNotPresent(cEntity * a_Entity)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), ZERO_CHUNK_Y, a_Entity->GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), a_Entity->GetChunkZ());
 	if (
 		(Chunk == NULL) ||  // Chunk not present at all
 		(!Chunk->IsValid() && !a_Entity->IsPlayer())  // Chunk present, but no valid data; players need to spawn in such chunks (#953)
@@ -1729,7 +1729,7 @@ bool cChunkMap::HasEntity(int a_UniqueID)
 void cChunkMap::RemoveEntity(cEntity * a_Entity)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), ZERO_CHUNK_Y, a_Entity->GetChunkZ());
+	cChunkPtr Chunk = GetChunkNoGen(a_Entity->GetChunkX(), a_Entity->GetChunkZ());
 
 	// Even if a chunk is not valid, it may still contain entities such as players; make sure to remove them (#1190)
 	if (Chunk == NULL)
@@ -1763,7 +1763,7 @@ bool cChunkMap::ForEachEntity(cEntityCallback & a_Callback)
 bool cChunkMap::ForEachEntityInChunk(int a_ChunkX, int a_ChunkZ, cEntityCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -1989,7 +1989,7 @@ bool cChunkMap::DoWithEntityByID(int a_UniqueID, cEntityCallback & a_Callback)
 bool cChunkMap::ForEachBlockEntityInChunk(int a_ChunkX, int a_ChunkZ, cBlockEntityCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2004,7 +2004,7 @@ bool cChunkMap::ForEachBlockEntityInChunk(int a_ChunkX, int a_ChunkZ, cBlockEnti
 bool cChunkMap::ForEachChestInChunk(int a_ChunkX, int a_ChunkZ, cChestCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2019,7 +2019,7 @@ bool cChunkMap::ForEachChestInChunk(int a_ChunkX, int a_ChunkZ, cChestCallback &
 bool cChunkMap::ForEachDispenserInChunk(int a_ChunkX, int a_ChunkZ, cDispenserCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2034,7 +2034,7 @@ bool cChunkMap::ForEachDispenserInChunk(int a_ChunkX, int a_ChunkZ, cDispenserCa
 bool cChunkMap::ForEachDropperInChunk(int a_ChunkX, int a_ChunkZ, cDropperCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2049,7 +2049,7 @@ bool cChunkMap::ForEachDropperInChunk(int a_ChunkX, int a_ChunkZ, cDropperCallba
 bool cChunkMap::ForEachDropSpenserInChunk(int a_ChunkX, int a_ChunkZ, cDropSpenserCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2064,7 +2064,7 @@ bool cChunkMap::ForEachDropSpenserInChunk(int a_ChunkX, int a_ChunkZ, cDropSpens
 bool cChunkMap::ForEachFurnaceInChunk(int a_ChunkX, int a_ChunkZ, cFurnaceCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2082,7 +2082,7 @@ bool cChunkMap::DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cB
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2100,7 +2100,7 @@ bool cChunkMap::DoWithBeaconAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBeacon
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2118,7 +2118,7 @@ bool cChunkMap::DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, cChestCa
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2136,7 +2136,7 @@ bool cChunkMap::DoWithDispenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDis
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2154,7 +2154,7 @@ bool cChunkMap::DoWithDropperAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropp
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2172,7 +2172,7 @@ bool cChunkMap::DoWithDropSpenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cD
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2190,7 +2190,7 @@ bool cChunkMap::DoWithFurnaceAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFurna
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2207,7 +2207,7 @@ bool cChunkMap::DoWithNoteBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, cNot
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2224,7 +2224,7 @@ bool cChunkMap::DoWithCommandBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, c
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2242,7 +2242,7 @@ bool cChunkMap::DoWithMobHeadAt(int a_BlockX, int a_BlockY, int a_BlockZ, cMobHe
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2260,7 +2260,7 @@ bool cChunkMap::DoWithFlowerPotAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFlo
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2278,7 +2278,7 @@ bool cChunkMap::GetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, AString &
 	int BlockX = a_BlockX, BlockY = a_BlockY, BlockZ = a_BlockZ;
 	cChunkDef::AbsoluteToRelative(BlockX, BlockY, BlockZ, ChunkX, ChunkZ);
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2290,10 +2290,10 @@ bool cChunkMap::GetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, AString &
 
 
 
-void cChunkMap::TouchChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cChunkMap::TouchChunk(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	GetChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	GetChunk(a_ChunkX, a_ChunkZ);
 }
 
 
@@ -2301,11 +2301,11 @@ void cChunkMap::TouchChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 
 
 /// Loads the chunk synchronously, if not already loaded. Doesn't generate. Returns true if chunk valid (even if already loaded before)
-bool cChunkMap::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+bool cChunkMap::LoadChunk(int a_ChunkX, int a_ChunkZ)
 {
 	{
 		cCSLock Lock(m_CSLayers);
-		cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkY, a_ChunkZ);
+		cChunkPtr Chunk = GetChunkNoGen(a_ChunkX, a_ChunkZ);
 		if (Chunk == NULL)
 		{
 			// Internal error
@@ -2322,7 +2322,7 @@ bool cChunkMap::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 			return false;
 		}
 	}
-	return m_World->GetStorage().LoadChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	return m_World->GetStorage().LoadChunk(a_ChunkX, a_ChunkZ);
 }
 
 
@@ -2334,7 +2334,7 @@ void cChunkMap::LoadChunks(const cChunkCoordsList & a_Chunks)
 {
 	for (cChunkCoordsList::const_iterator itr = a_Chunks.begin(); itr != a_Chunks.end(); ++itr)
 	{
-		LoadChunk(itr->m_ChunkX, itr->m_ChunkY, itr->m_ChunkZ);
+		LoadChunk(itr->m_ChunkX, itr->m_ChunkZ);
 	}  // for itr - a_Chunks[]
 }
 
@@ -2342,10 +2342,10 @@ void cChunkMap::LoadChunks(const cChunkCoordsList & a_Chunks)
 
 
 
-void cChunkMap::ChunkLoadFailed(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cChunkMap::ChunkLoadFailed(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkY, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		return;
@@ -2362,7 +2362,7 @@ bool cChunkMap::SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const ASt
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return false;
@@ -2377,7 +2377,7 @@ bool cChunkMap::SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const ASt
 void cChunkMap::MarkChunkRegenerating(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		// Not present
@@ -2393,7 +2393,7 @@ void cChunkMap::MarkChunkRegenerating(int a_ChunkX, int a_ChunkZ)
 bool cChunkMap::IsChunkLighted(int a_ChunkX, int a_ChunkZ)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk == NULL)
 	{
 		// Not present
@@ -2414,7 +2414,7 @@ bool cChunkMap::ForEachChunkInRect(int a_MinChunkX, int a_MaxChunkX, int a_MinCh
 	{
 		for (int x = a_MinChunkX; x <= a_MaxChunkX; x++)
 		{
-			cChunkPtr Chunk = GetChunkNoLoad(x, ZERO_CHUNK_Y, z);
+			cChunkPtr Chunk = GetChunkNoLoad(x, z);
 			if ((Chunk == NULL) || (!Chunk->IsValid()))
 			{
 				// Not present / not valid
@@ -2456,7 +2456,7 @@ bool cChunkMap::WriteBlockArea(cBlockArea & a_Area, int a_MinBlockX, int a_MinBl
 	{
 		for (int x = MinChunkX; x <= MaxChunkX; x++)
 		{
-			cChunkPtr Chunk = GetChunkNoLoad(x, ZERO_CHUNK_Y, z);
+			cChunkPtr Chunk = GetChunkNoLoad(x, z);
 			if ((Chunk == NULL) || (!Chunk->IsValid()))
 			{
 				// Not present / not valid
@@ -2497,7 +2497,7 @@ void cChunkMap::GrowMelonPumpkin(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCK
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->GrowMelonPumpkin(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_Rand);
@@ -2514,7 +2514,7 @@ void cChunkMap::GrowSugarcane(int a_BlockX, int a_BlockY, int a_BlockZ, int a_Nu
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->GrowSugarcane(a_BlockX, a_BlockY, a_BlockZ, a_NumBlocksToGrow);
@@ -2531,7 +2531,7 @@ void cChunkMap::GrowCactus(int a_BlockX, int a_BlockY, int a_BlockZ, int a_NumBl
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->GrowCactus(a_BlockX, a_BlockY, a_BlockZ, a_NumBlocksToGrow);
@@ -2548,7 +2548,7 @@ void cChunkMap::SetNextBlockTick(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
 	
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->SetNextBlockTick(a_BlockX, a_BlockY, a_BlockZ);
@@ -2603,7 +2603,7 @@ void cChunkMap::TickBlock(int a_BlockX, int a_BlockY, int a_BlockZ)
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 	cChunkDef::AbsoluteToRelative(a_BlockX, a_BlockY, a_BlockZ, ChunkX, ChunkZ);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if ((Chunk == NULL) || !Chunk->IsValid())
 	{
 		return;
@@ -2672,7 +2672,7 @@ void cChunkMap::QueueTickBlock(int a_BlockX, int a_BlockY, int a_BlockZ)
 	// a_BlockXYZ now contains relative coords!
 
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ZERO_CHUNK_Y, ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(ChunkX, ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->QueueTickBlock(a_BlockX, a_BlockY, a_BlockZ);
@@ -2686,7 +2686,7 @@ void cChunkMap::QueueTickBlock(int a_BlockX, int a_BlockY, int a_BlockZ)
 void cChunkMap::SetChunkAlwaysTicked(int a_ChunkX, int a_ChunkZ, bool a_AlwaysTicked)
 {
 	cCSLock Lock(m_CSLayers);
-	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	cChunkPtr Chunk = GetChunkNoLoad(a_ChunkX, a_ChunkZ);
 	if (Chunk != NULL)
 	{
 		Chunk->SetAlwaysTicked(a_AlwaysTicked);
@@ -2731,7 +2731,7 @@ cChunkMap::cChunkLayer::~cChunkLayer()
 
 
 
-cChunkPtr cChunkMap::cChunkLayer::GetChunk( int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+cChunkPtr cChunkMap::cChunkLayer::GetChunk( int a_ChunkX, int a_ChunkZ)
 {
 	// Always returns an assigned chunkptr, but the chunk needn't be valid (loaded / generated) - callers must check
 
@@ -2751,7 +2751,7 @@ cChunkPtr cChunkMap::cChunkLayer::GetChunk( int a_ChunkX, int a_ChunkY, int a_Ch
 		cChunk * neixp = (LocalX < LAYER_SIZE - 1) ? m_Chunks[Index + 1]          : m_Parent->FindChunk(a_ChunkX + 1, a_ChunkZ);
 		cChunk * neizm = (LocalZ > 0)              ? m_Chunks[Index - LAYER_SIZE] : m_Parent->FindChunk(a_ChunkX,     a_ChunkZ - 1);
 		cChunk * neizp = (LocalZ < LAYER_SIZE - 1) ? m_Chunks[Index + LAYER_SIZE] : m_Parent->FindChunk(a_ChunkX,     a_ChunkZ + 1);
-		m_Chunks[Index] = new cChunk(a_ChunkX, 0, a_ChunkZ, m_Parent, m_Parent->GetWorld(), neixm, neixp, neizm, neizp, m_Pool);
+		m_Chunks[Index] = new cChunk(a_ChunkX, a_ChunkZ, m_Parent, m_Parent->GetWorld(), neixm, neixp, neizm, neizp, m_Pool);
 	}
 	return m_Chunks[Index];
 }
@@ -2951,7 +2951,7 @@ void cChunkMap::cChunkLayer::Save(void)
 	{
 		if ((m_Chunks[i] != NULL) && m_Chunks[i]->IsValid() && m_Chunks[i]->IsDirty())
 		{
-			World->GetStorage().QueueSaveChunk(m_Chunks[i]->GetPosX(), m_Chunks[i]->GetPosY(), m_Chunks[i]->GetPosZ());
+			World->GetStorage().QueueSaveChunk(m_Chunks[i]->GetPosX(), m_Chunks[i]->GetPosZ());
 		}
 	}  // for i - m_Chunks[]
 }
@@ -3024,7 +3024,7 @@ void cChunkMap::AddChunkStay(cChunkStay & a_ChunkStay)
 	const cChunkCoordsVector & WantedChunks = a_ChunkStay.GetChunks();
 	for (cChunkCoordsVector::const_iterator itr = WantedChunks.begin(); itr != WantedChunks.end(); ++itr)
 	{
-		cChunkPtr Chunk = GetChunk(itr->m_ChunkX, itr->m_ChunkY, itr->m_ChunkZ);
+		cChunkPtr Chunk = GetChunk(itr->m_ChunkX, itr->m_ChunkZ);
 		if (Chunk == NULL)
 		{
 			continue;
@@ -3073,7 +3073,7 @@ void cChunkMap::DelChunkStay(cChunkStay & a_ChunkStay)
 	const cChunkCoordsVector & Chunks = a_ChunkStay.GetChunks();
 	for (cChunkCoordsVector::const_iterator itr = Chunks.begin(), end = Chunks.end(); itr != end; ++itr)
 	{
-		cChunkPtr Chunk = GetChunkNoLoad(itr->m_ChunkX, itr->m_ChunkY, itr->m_ChunkZ);
+		cChunkPtr Chunk = GetChunkNoLoad(itr->m_ChunkX, itr->m_ChunkZ);
 		if (Chunk == NULL)
 		{
 			continue;
diff --git a/src/ChunkMap.h b/src/ChunkMap.h
index 1e9a0f982..6a379e51d 100644
--- a/src/ChunkMap.h
+++ b/src/ChunkMap.h
@@ -270,16 +270,16 @@ public:
 	bool GetSignLines (int a_BlockX, int a_BlockY, int a_BlockZ, AString & a_Line1, AString & a_Line2, AString & a_Line3, AString & a_Line4);  // Lua-accessible
 
 	/** Touches the chunk, causing it to be loaded or generated */
-	void TouchChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void TouchChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/** Loads the chunk, if not already loaded. Doesn't generate. Returns true if chunk valid (even if already loaded before) */
-	bool LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	bool LoadChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/** Loads the chunks specified. Doesn't report failure, other than chunks being !IsValid() */
 	void LoadChunks(const cChunkCoordsList & a_Chunks);
 
 	/** Marks the chunk as failed-to-load */
-	void ChunkLoadFailed(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void ChunkLoadFailed(int a_ChunkX, int a_ChunkZ);
 	
 	/** Sets the sign text. Returns true if sign text changed. */
 	bool SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4);
@@ -363,7 +363,7 @@ private:
 		~cChunkLayer();
 
 		/** Always returns an assigned chunkptr, but the chunk needn't be valid (loaded / generated) - callers must check */
-		cChunkPtr GetChunk( int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+		cChunkPtr GetChunk( int a_ChunkX, int a_ChunkZ);
 		
 		/** Returns the specified chunk, or NULL if not created yet */
 		cChunk * FindChunk(int a_ChunkX, int a_ChunkZ);
@@ -456,9 +456,9 @@ private:
 
 	std::auto_ptr<cAllocationPool<cChunkData::sChunkSection> > m_Pool;
 
-	cChunkPtr GetChunk      (int a_ChunkX, int a_ChunkY, int a_ChunkZ);  // Also queues the chunk for loading / generating if not valid
-	cChunkPtr GetChunkNoGen (int a_ChunkX, int a_ChunkY, int a_ChunkZ);  // Also queues the chunk for loading if not valid; doesn't generate
-	cChunkPtr GetChunkNoLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ);  // Doesn't load, doesn't generate
+	cChunkPtr GetChunk      (int a_ChunkX, int a_ChunkZ);  // Also queues the chunk for loading / generating if not valid
+	cChunkPtr GetChunkNoGen (int a_ChunkX, int a_ChunkZ);  // Also queues the chunk for loading if not valid; doesn't generate
+	cChunkPtr GetChunkNoLoad(int a_ChunkX, int a_ChunkZ);  // Doesn't load, doesn't generate
 	
 	/** Gets a block in any chunk while in the cChunk's Tick() method; returns true if successful, false if chunk not loaded (doesn't queue load) */
 	bool LockedGetBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta);
diff --git a/src/ChunkSender.cpp b/src/ChunkSender.cpp
index ebcf0e272..95c4d03d2 100644
--- a/src/ChunkSender.cpp
+++ b/src/ChunkSender.cpp
@@ -81,7 +81,7 @@ void cChunkSender::ChunkReady(int a_ChunkX, int a_ChunkZ)
 	// This is probably never gonna be called twice for the same chunk, and if it is, we don't mind, so we don't check
 	{
 		cCSLock Lock(m_CS);
-		m_ChunksReady.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+		m_ChunksReady.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
 	}
 	m_evtQueue.Set();
 }
@@ -95,12 +95,12 @@ void cChunkSender::QueueSendChunkTo(int a_ChunkX, int a_ChunkZ, cClientHandle *
 	ASSERT(a_Client != NULL);
 	{
 		cCSLock Lock(m_CS);
-		if (std::find(m_SendChunks.begin(), m_SendChunks.end(), sSendChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ, a_Client)) != m_SendChunks.end())
+		if (std::find(m_SendChunks.begin(), m_SendChunks.end(), sSendChunk(a_ChunkX, a_ChunkZ, a_Client)) != m_SendChunks.end())
 		{
 			// Already queued, bail out
 			return;
 		}
-		m_SendChunks.push_back(sSendChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ, a_Client));
+		m_SendChunks.push_back(sSendChunk(a_ChunkX, a_ChunkZ, a_Client));
 	}
 	m_evtQueue.Set();
 }
@@ -160,7 +160,7 @@ void cChunkSender::Execute(void)
 			m_ChunksReady.pop_front();
 			Lock.Unlock();
 			
-			SendChunk(Coords.m_ChunkX, Coords.m_ChunkY, Coords.m_ChunkZ, NULL);
+			SendChunk(Coords.m_ChunkX, Coords.m_ChunkZ, NULL);
 		}
 		else
 		{
@@ -169,7 +169,7 @@ void cChunkSender::Execute(void)
 			m_SendChunks.pop_front();
 			Lock.Unlock();
 			
-			SendChunk(Chunk.m_ChunkX, Chunk.m_ChunkY, Chunk.m_ChunkZ, Chunk.m_Client);
+			SendChunk(Chunk.m_ChunkX, Chunk.m_ChunkZ, Chunk.m_Client);
 		}
 		Lock.Lock();
 		int RemoveCount = m_RemoveCount;
@@ -186,14 +186,14 @@ void cChunkSender::Execute(void)
 
 
 
-void cChunkSender::SendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, cClientHandle * a_Client)
+void cChunkSender::SendChunk(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
 {
 	ASSERT(m_World != NULL);
 	
 	// Ask the client if it still wants the chunk:
 	if (a_Client != NULL)
 	{
-		if (!a_Client->WantsSendChunk(a_ChunkX, a_ChunkY, a_ChunkZ))
+		if (!a_Client->WantsSendChunk(a_ChunkX, a_ChunkZ))
 		{
 			return;
 		}
diff --git a/src/ChunkSender.h b/src/ChunkSender.h
index 624a3a0bd..a0e9087a9 100644
--- a/src/ChunkSender.h
+++ b/src/ChunkSender.h
@@ -95,13 +95,11 @@ protected:
 	struct sSendChunk
 	{
 		int m_ChunkX;
-		int m_ChunkY;
 		int m_ChunkZ;
 		cClientHandle * m_Client;
 		
-		sSendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, cClientHandle * a_Client) :
+		sSendChunk(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client) :
 			m_ChunkX(a_ChunkX),
-			m_ChunkY(a_ChunkY),
 			m_ChunkZ(a_ChunkZ),
 			m_Client(a_Client)
 		{
@@ -111,7 +109,6 @@ protected:
 		{
 			return (
 				(a_Other.m_ChunkX == m_ChunkX) &&
-				(a_Other.m_ChunkY == m_ChunkY) &&
 				(a_Other.m_ChunkZ == m_ChunkZ) &&
 				(a_Other.m_Client == m_Client)
 			);
@@ -162,7 +159,7 @@ protected:
 	virtual void BlockEntity  (cBlockEntity * a_Entity) override;
 
 	/// Sends the specified chunk to a_Client, or to all chunk clients if a_Client == NULL
-	void SendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, cClientHandle * a_Client);
+	void SendChunk(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client);
 } ;
 
 
diff --git a/src/ChunkStay.cpp b/src/ChunkStay.cpp
index b5002a63d..38aa89a37 100644
--- a/src/ChunkStay.cpp
+++ b/src/ChunkStay.cpp
@@ -51,7 +51,7 @@ void cChunkStay::Add(int a_ChunkX, int a_ChunkZ)
 			return;
 		}
 	}  // for itr - Chunks[]
-	m_Chunks.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+	m_Chunks.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
 }
 
 
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 4a768771e..6b31bfa64 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -472,13 +472,13 @@ void cClientHandle::StreamChunks(void)
 		// For each distance touch chunks in a hollow square centered around current position:
 		for (int i = -d; i <= d; ++i)
 		{
-			World->TouchChunk(ChunkPosX + d, ZERO_CHUNK_Y, ChunkPosZ + i);
-			World->TouchChunk(ChunkPosX - d, ZERO_CHUNK_Y, ChunkPosZ + i);
+			World->TouchChunk(ChunkPosX + d, ChunkPosZ + i);
+			World->TouchChunk(ChunkPosX - d, ChunkPosZ + i);
 		}  // for i
 		for (int i = -d + 1; i < d; ++i)
 		{
-			World->TouchChunk(ChunkPosX + i, ZERO_CHUNK_Y, ChunkPosZ + d);
-			World->TouchChunk(ChunkPosX + i, ZERO_CHUNK_Y, ChunkPosZ - d);
+			World->TouchChunk(ChunkPosX + i, ChunkPosZ + d);
+			World->TouchChunk(ChunkPosX + i, ChunkPosZ - d);
 		}  // for i
 	}  // for d
 }
@@ -501,8 +501,8 @@ void cClientHandle::StreamChunk(int a_ChunkX, int a_ChunkZ)
 	{
 		{
 			cCSLock Lock(m_CSChunkLists);
-			m_LoadedChunks.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
-			m_ChunksToSend.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+			m_LoadedChunks.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
+			m_ChunksToSend.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
 		}
 		World->SendChunkTo(a_ChunkX, a_ChunkZ, this);
 	}
@@ -2734,7 +2734,7 @@ bool cClientHandle::HasPluginChannel(const AString & a_PluginChannel)
 
 
 
-bool cClientHandle::WantsSendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+bool cClientHandle::WantsSendChunk(int a_ChunkX, int a_ChunkZ)
 {
 	if (m_State >= csDestroying)
 	{
@@ -2742,7 +2742,7 @@ bool cClientHandle::WantsSendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 	}
 	
 	cCSLock Lock(m_CSChunkLists);
-	return (std::find(m_ChunksToSend.begin(), m_ChunksToSend.end(), cChunkCoords(a_ChunkX, a_ChunkY, a_ChunkZ)) != m_ChunksToSend.end());
+	return (std::find(m_ChunksToSend.begin(), m_ChunksToSend.end(), cChunkCoords(a_ChunkX, a_ChunkZ)) != m_ChunksToSend.end());
 }
 
 
@@ -2758,9 +2758,9 @@ void cClientHandle::AddWantedChunk(int a_ChunkX, int a_ChunkZ)
 	
 	LOGD("Adding chunk [%d, %d] to wanted chunks for client %p", a_ChunkX, a_ChunkZ, this);
 	cCSLock Lock(m_CSChunkLists);
-	if (std::find(m_ChunksToSend.begin(), m_ChunksToSend.end(), cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ)) == m_ChunksToSend.end())
+	if (std::find(m_ChunksToSend.begin(), m_ChunksToSend.end(), cChunkCoords(a_ChunkX, a_ChunkZ)) == m_ChunksToSend.end())
 	{
-		m_ChunksToSend.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+		m_ChunksToSend.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
 	}
 }
 
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index 24031119d..593d0780d 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -209,7 +209,7 @@ public:
 	// tolua_end
 	
 	/** Returns true if the client wants the chunk specified to be sent (in m_ChunksToSend) */
-	bool WantsSendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	bool WantsSendChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/** Adds the chunk specified to the list of chunks wanted for sending (m_ChunksToSend) */
 	void AddWantedChunk(int a_ChunkX, int a_ChunkZ);
diff --git a/src/Generating/ChunkGenerator.cpp b/src/Generating/ChunkGenerator.cpp
index a1188f984..d39b44733 100644
--- a/src/Generating/ChunkGenerator.cpp
+++ b/src/Generating/ChunkGenerator.cpp
@@ -99,15 +99,15 @@ void cChunkGenerator::Stop(void)
 
 
 
-void cChunkGenerator::QueueGenerateChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cChunkGenerator::QueueGenerateChunk(int a_ChunkX, int a_ChunkZ, bool a_ForceGenerate)
 {
 	{
 		cCSLock Lock(m_CS);
 
 		// Check if it is already in the queue:
-		for (cChunkCoordsList::iterator itr = m_Queue.begin(); itr != m_Queue.end(); ++itr)
+		for (cChunkCoordsWithBoolList::iterator itr = m_Queue.begin(); itr != m_Queue.end(); ++itr)
 		{
-			if ((itr->m_ChunkX == a_ChunkX) && (itr->m_ChunkY == a_ChunkY) && (itr->m_ChunkZ == a_ChunkZ))
+			if ((itr->m_ChunkX == a_ChunkX) && (itr->m_ChunkZ == a_ChunkZ))
 			{
 				// Already in the queue, bail out
 				return;
@@ -119,7 +119,7 @@ void cChunkGenerator::QueueGenerateChunk(int a_ChunkX, int a_ChunkY, int a_Chunk
 		{
 			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));
+		m_Queue.push_back(cChunkCoordsWithBool(a_ChunkX, a_ChunkZ, a_ForceGenerate));
 	}
 
 	m_Event.Set();
@@ -229,9 +229,9 @@ void cChunkGenerator::Execute(void)
 			continue;
 		}
 
-		cChunkCoords coords = m_Queue.front();  // Get next coord from queue
-		m_Queue.erase( m_Queue.begin());  // Remove coordinate from queue
+		cChunkCoordsWithBool coords = m_Queue.front();  // Get next coord from queue
 		bool SkipEnabled = (m_Queue.size() > QUEUE_SKIP_LIMIT);
+		m_Queue.erase(m_Queue.begin());  // Remove coordinate from queue
 		Lock.Unlock();  // Unlock ASAP
 		m_evtRemoved.Set();
 
@@ -245,8 +245,7 @@ void cChunkGenerator::Execute(void)
 			LastReportTick = clock();
 		}
 
-		// Hack for regenerating chunks: if Y != 0, the chunk is considered invalid, even if it has its data set
-		if ((coords.m_ChunkY == 0) && m_ChunkSink->IsChunkValid(coords.m_ChunkX, coords.m_ChunkZ))
+		if (!coords.m_ForceGenerate && m_ChunkSink->IsChunkValid(coords.m_ChunkX, coords.m_ChunkZ))
 		{
 			LOGD("Chunk [%d, %d] already generated, skipping generation", coords.m_ChunkX, coords.m_ChunkZ);
 			// Already generated, ignore request
@@ -259,8 +258,8 @@ void cChunkGenerator::Execute(void)
 			continue;
 		}
 
-		LOGD("Generating chunk [%d, %d, %d]", coords.m_ChunkX, coords.m_ChunkY, coords.m_ChunkZ);
-		DoGenerate(coords.m_ChunkX, coords.m_ChunkY, coords.m_ChunkZ);
+		LOGD("Generating chunk [%d, %d]", coords.m_ChunkX, coords.m_ChunkZ);
+		DoGenerate(coords.m_ChunkX, coords.m_ChunkZ);
 
 		NumChunksGenerated++;
 	}  // while (!bStop)
@@ -269,7 +268,7 @@ void cChunkGenerator::Execute(void)
 
 
 
-void cChunkGenerator::DoGenerate(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cChunkGenerator::DoGenerate(int a_ChunkX, int a_ChunkZ)
 {
 	ASSERT(m_PluginInterface != NULL);
 	ASSERT(m_ChunkSink != NULL);
diff --git a/src/Generating/ChunkGenerator.h b/src/Generating/ChunkGenerator.h
index 88d71f3f9..e880a6766 100644
--- a/src/Generating/ChunkGenerator.h
+++ b/src/Generating/ChunkGenerator.h
@@ -116,7 +116,7 @@ public:
 	void Stop(void);
 
 	/// Queues the chunk for generation; removes duplicate requests
-	void QueueGenerateChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void QueueGenerateChunk(int a_ChunkX, int a_ChunkZ, bool a_ForceGenerate);
 	
 	/// Generates the biomes for the specified chunk (directly, not in a separate thread). Used by the world loader if biomes failed loading.
 	void GenerateBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap);
@@ -137,10 +137,10 @@ private:
 
 	int m_Seed;
 
-	cCriticalSection m_CS;
-	cChunkCoordsList m_Queue;
-	cEvent           m_Event;       ///< Set when an item is added to the queue or the thread should terminate
-	cEvent           m_evtRemoved;  ///< Set when an item is removed from the queue
+	cCriticalSection         m_CS;
+	cChunkCoordsWithBoolList m_Queue;
+	cEvent                   m_Event;       ///< Set when an item is added to the queue or the thread should terminate
+	cEvent                   m_evtRemoved;  ///< Set when an item is removed from the queue
 	
 	cGenerator * m_Generator;  ///< The actual generator engine used to generate chunks
 	
@@ -154,7 +154,7 @@ private:
 	// cIsThread override:
 	virtual void Execute(void) override;
 
-	void DoGenerate(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void DoGenerate(int a_ChunkX, int a_ChunkZ);
 };
 
 
diff --git a/src/World.cpp b/src/World.cpp
index 99e09c658..dd6017f0d 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -442,7 +442,7 @@ void cWorld::InitializeSpawn(void)
 	{
 		for (int z = 0; z < ViewDist; z++)
 		{
-			m_ChunkMap->TouchChunk(x + ChunkX-(ViewDist - 1) / 2, ZERO_CHUNK_Y, z + ChunkZ-(ViewDist - 1) / 2);  // Queue the chunk in the generator / loader
+			m_ChunkMap->TouchChunk(x + ChunkX-(ViewDist - 1) / 2, z + ChunkZ-(ViewDist - 1) / 2);  // Queue the chunk in the generator / loader
 		}
 	}
 	
@@ -2424,7 +2424,7 @@ void cWorld::SetChunkData(cSetChunkData & a_SetChunkData)
 	// Save the chunk right after generating, so that we don't have to generate it again on next run
 	if (a_SetChunkData.ShouldMarkDirty())
 	{
-		m_Storage.QueueSaveChunk(ChunkX, 0, ChunkZ);
+		m_Storage.QueueSaveChunk(ChunkX, ChunkZ);
 	}
 }
 
@@ -2769,18 +2769,18 @@ void cWorld::RemoveClientFromChunkSender(cClientHandle * a_Client)
 
 
 
-void cWorld::TouchChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cWorld::TouchChunk(int a_ChunkX, int a_ChunkZ)
 {
-	m_ChunkMap->TouchChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	m_ChunkMap->TouchChunk(a_ChunkX, a_ChunkZ);
 }
 
 
 
 
 
-bool cWorld::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+bool cWorld::LoadChunk(int a_ChunkX, int a_ChunkZ)
 {
-	return m_ChunkMap->LoadChunk(a_ChunkX, a_ChunkY, a_ChunkZ);
+	return m_ChunkMap->LoadChunk(a_ChunkX, a_ChunkZ);
 }
 
 
@@ -2796,9 +2796,9 @@ void cWorld::LoadChunks(const cChunkCoordsList & a_Chunks)
 
 
 
-void cWorld::ChunkLoadFailed(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cWorld::ChunkLoadFailed(int a_ChunkX, int a_ChunkZ)
 {
-	m_ChunkMap->ChunkLoadFailed(a_ChunkX, a_ChunkY, a_ChunkZ);
+	m_ChunkMap->ChunkLoadFailed(a_ChunkX, a_ChunkZ);
 }
 
 
@@ -2903,8 +2903,7 @@ void cWorld::RegenerateChunk(int a_ChunkX, int a_ChunkZ)
 {
 	m_ChunkMap->MarkChunkRegenerating(a_ChunkX, a_ChunkZ);
 	
-	// Trick: use Y=1 to force the chunk generation even though the chunk data is already present
-	m_Generator.QueueGenerateChunk(a_ChunkX, 1, a_ChunkZ);
+	m_Generator.QueueGenerateChunk(a_ChunkX, a_ChunkZ, true);
 }
 
 
@@ -2913,7 +2912,7 @@ void cWorld::RegenerateChunk(int a_ChunkX, int a_ChunkZ)
 
 void cWorld::GenerateChunk(int a_ChunkX, int a_ChunkZ)
 {
-	m_Generator.QueueGenerateChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ);
+	m_Generator.QueueGenerateChunk(a_ChunkX, a_ChunkZ, false);
 }
 
 
diff --git a/src/World.h b/src/World.h
index 578c9682b..49e30694e 100644
--- a/src/World.h
+++ b/src/World.h
@@ -351,16 +351,16 @@ public:
 	void RemoveClientFromChunkSender(cClientHandle * a_Client);
 	
 	/** Touches the chunk, causing it to be loaded or generated */
-	void TouchChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void TouchChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/** Loads the chunk, if not already loaded. Doesn't generate. Returns true if chunk valid (even if already loaded before) */
-	bool LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	bool LoadChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/** Loads the chunks specified. Doesn't report failure, other than chunks being !IsValid() */
 	void LoadChunks(const cChunkCoordsList & a_Chunks);
 	
 	/** Marks the chunk as failed-to-load: */
-	void ChunkLoadFailed(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void ChunkLoadFailed(int a_ChunkX, int a_ChunkZ);
 	
 	/** Sets the sign text, asking plugins for permission first. a_Player is the player who this change belongs to, may be NULL. Returns true if sign text changed. Same as UpdateSign() */
 	bool SetSignLines(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4, cPlayer * a_Player = NULL);  // Exported in ManualBindings.cpp
@@ -380,7 +380,7 @@ public:
 	/** Regenerate the given chunk: */
 	void RegenerateChunk(int a_ChunkX, int a_ChunkZ);  // tolua_export
 	
-	/** Generates the given chunk, if not already generated */
+	/** Generates the given chunk */
 	void GenerateChunk(int a_ChunkX, int a_ChunkZ);  // tolua_export
 	
 	/** Queues a chunk for lighting; a_Callback is called after the chunk is lighted */
diff --git a/src/WorldStorage/WSSCompact.cpp b/src/WorldStorage/WSSCompact.cpp
index 58f9e3cab..6760186b2 100644
--- a/src/WorldStorage/WSSCompact.cpp
+++ b/src/WorldStorage/WSSCompact.cpp
@@ -980,7 +980,7 @@ bool cWSSCompact::cPAKFile::SaveChunkToData(const cChunkCoords & a_Chunk, cWorld
 	if (!a_World->GetChunkData(a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, Serializer))
 	{
 		// Chunk not valid
-		LOG("cWSSCompact: Trying to save chunk [%d, %d, %d] that has no data, ignoring request.", a_Chunk.m_ChunkX, a_Chunk.m_ChunkY, a_Chunk.m_ChunkZ);
+		LOG("cWSSCompact: Trying to save chunk [%d, %d] that has no data, ignoring request.", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ);
 		return false;
 	}
 
@@ -999,7 +999,7 @@ bool cWSSCompact::cPAKFile::SaveChunkToData(const cChunkCoords & a_Chunk, cWorld
 	int errorcode = CompressString(Data.data(), Data.size(), CompressedData, m_CompressionFactor);
 	if (errorcode != Z_OK)
 	{
-		LOGERROR("Error %i compressing data for chunk [%d, %d, %d]", errorcode, a_Chunk.m_ChunkX, a_Chunk.m_ChunkY, a_Chunk.m_ChunkZ);
+		LOGERROR("Error %i compressing data for chunk [%d, %d]", errorcode, a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ);
 		return false;
 	}
 	
@@ -1010,7 +1010,7 @@ bool cWSSCompact::cPAKFile::SaveChunkToData(const cChunkCoords & a_Chunk, cWorld
 	sChunkHeader * Header = new sChunkHeader;
 	if (Header == NULL)
 	{
-		LOGWARNING("Cannot create a new chunk header to save chunk [%d, %d, %d]", a_Chunk.m_ChunkX, a_Chunk.m_ChunkY, a_Chunk.m_ChunkZ);
+		LOGWARNING("Cannot create a new chunk header to save chunk [%d, %d]", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ);
 		return false;
 	}
 	Header->m_CompressedSize = (int)CompressedData.size();
diff --git a/src/WorldStorage/WorldStorage.cpp b/src/WorldStorage/WorldStorage.cpp
index 707e8f929..667a28470 100644
--- a/src/WorldStorage/WorldStorage.cpp
+++ b/src/WorldStorage/WorldStorage.cpp
@@ -141,9 +141,9 @@ size_t cWorldStorage::GetSaveQueueLength(void)
 
 
 
-void cWorldStorage::QueueLoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, bool a_Generate)
+void cWorldStorage::QueueLoadChunk(int a_ChunkX, int a_ChunkZ, bool a_Generate)
 {
-	m_LoadQueue.EnqueueItem(sChunkLoad(a_ChunkX, a_ChunkY, a_ChunkZ, a_Generate));
+	m_LoadQueue.EnqueueItem(sChunkLoad(a_ChunkX, a_ChunkZ, a_Generate));
 	m_Event.Set();
 }
 
@@ -151,9 +151,9 @@ void cWorldStorage::QueueLoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, boo
 
 
 
-void cWorldStorage::QueueSaveChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cWorldStorage::QueueSaveChunk(int a_ChunkX, int a_ChunkZ)
 {
-	m_SaveQueue.EnqueueItemIfNotPresent(cChunkCoords(a_ChunkX, a_ChunkY, a_ChunkZ));
+	m_SaveQueue.EnqueueItemIfNotPresent(cChunkCoords(a_ChunkX, a_ChunkZ));
 	m_Event.Set();
 }
 
@@ -161,9 +161,9 @@ void cWorldStorage::QueueSaveChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 
 
 
-void cWorldStorage::UnqueueLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+void cWorldStorage::UnqueueLoad(int a_ChunkX, int a_ChunkZ)
 {
-	m_LoadQueue.Remove(sChunkLoad(a_ChunkX, a_ChunkY, a_ChunkZ, true));
+	m_LoadQueue.Remove(sChunkLoad(a_ChunkX, a_ChunkZ, true));
 }
 
 
@@ -242,19 +242,19 @@ void cWorldStorage::Execute(void)
 
 bool cWorldStorage::LoadOneChunk(void)
 {
-	sChunkLoad ToLoad(0, 0, 0, false);
+	sChunkLoad ToLoad(0, 0, false);
 	bool ShouldLoad = m_LoadQueue.TryDequeueItem(ToLoad);
-	if (ShouldLoad && !LoadChunk(ToLoad.m_ChunkX, ToLoad.m_ChunkY, ToLoad.m_ChunkZ))
+	if (ShouldLoad && !LoadChunk(ToLoad.m_ChunkX, ToLoad.m_ChunkZ))
 	{
 		if (ToLoad.m_Generate)
 		{
 			// The chunk couldn't be loaded, generate it:
-			m_World->GetGenerator().QueueGenerateChunk(ToLoad.m_ChunkX, ToLoad.m_ChunkY, ToLoad.m_ChunkZ);
+			m_World->GetGenerator().QueueGenerateChunk(ToLoad.m_ChunkX, ToLoad.m_ChunkZ, false);
 		}
 		else
 		{
 			// TODO: Notify the world that the load has failed:
-			// m_World->ChunkLoadFailed(ToLoad.m_ChunkX, ToLoad.m_ChunkY, ToLoad.m_ChunkZ);
+			// m_World->ChunkLoadFailed(ToLoad.m_ChunkX, ToLoad.m_ChunkZ);
 		}
 	}
 	return ShouldLoad;
@@ -266,7 +266,7 @@ bool cWorldStorage::LoadOneChunk(void)
 
 bool cWorldStorage::SaveOneChunk(void)
 {
-	cChunkCoords ToSave(0, 0, 0);
+	cChunkCoords ToSave(0, 0);
 	bool ShouldSave = m_SaveQueue.TryDequeueItem(ToSave);
 	if (ShouldSave && m_World->IsChunkValid(ToSave.m_ChunkX, ToSave.m_ChunkZ))
 	{
@@ -283,7 +283,7 @@ bool cWorldStorage::SaveOneChunk(void)
 
 
 
-bool cWorldStorage::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
+bool cWorldStorage::LoadChunk(int a_ChunkX, int a_ChunkZ)
 {
 	if (m_World->IsChunkValid(a_ChunkX, a_ChunkZ))
 	{
@@ -291,7 +291,7 @@ bool cWorldStorage::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 		return true;
 	}
 	
-	cChunkCoords Coords(a_ChunkX, a_ChunkY, a_ChunkZ);
+	cChunkCoords Coords(a_ChunkX, a_ChunkZ);
 
 	// First try the schema that is used for saving
 	if (m_SaveSchema->LoadChunk(Coords))
@@ -309,7 +309,7 @@ bool cWorldStorage::LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ)
 	}
 	
 	// Notify the chunk owner that the chunk failed to load (sets cChunk::m_HasLoadFailed to true):
-	m_World->ChunkLoadFailed(a_ChunkX, a_ChunkY, a_ChunkZ);
+	m_World->ChunkLoadFailed(a_ChunkX, a_ChunkZ);
 	
 	return false;
 }
diff --git a/src/WorldStorage/WorldStorage.h b/src/WorldStorage/WorldStorage.h
index dd07ecb64..5f89ead53 100644
--- a/src/WorldStorage/WorldStorage.h
+++ b/src/WorldStorage/WorldStorage.h
@@ -64,13 +64,13 @@ public:
 	cWorldStorage(void);
 	~cWorldStorage();
 	
-	void QueueLoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, bool a_Generate);  // Queues the chunk for loading; if not loaded, the chunk will be generated if a_Generate is true
-	void QueueSaveChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void QueueLoadChunk(int a_ChunkX, int a_ChunkZ, bool a_Generate);  // Queues the chunk for loading; if not loaded, the chunk will be generated if a_Generate is true
+	void QueueSaveChunk(int a_ChunkX, int a_ChunkZ);
 	
 	/// Loads the chunk specified; returns true on success, false on failure
-	bool LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	bool LoadChunk(int a_ChunkX, int a_ChunkZ);
 
-	void UnqueueLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
+	void UnqueueLoad(int a_ChunkX, int a_ChunkZ);
 	void UnqueueSave(const cChunkCoords & a_Chunk);
 	
 	bool Start(cWorld * a_World, const AString & a_StorageSchemaName, int a_StorageCompressionFactor);  // Hide the cIsThread's Start() method, we need to provide args
@@ -87,17 +87,15 @@ protected:
 	struct sChunkLoad
 	{
 		int m_ChunkX;
-		int m_ChunkY;
 		int m_ChunkZ;
 		bool m_Generate;  // If true, the chunk will be generated if it cannot be loaded
 		
-		sChunkLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ, bool a_Generate) : m_ChunkX(a_ChunkX), m_ChunkY(a_ChunkY), m_ChunkZ(a_ChunkZ), m_Generate(a_Generate) {}
+		sChunkLoad(int a_ChunkX, int a_ChunkZ, bool a_Generate) : m_ChunkX(a_ChunkX), m_ChunkZ(a_ChunkZ), m_Generate(a_Generate) {}
 
 		bool operator ==(const sChunkLoad other) const
 		{
 			return (
 				(this->m_ChunkX == other.m_ChunkX) &&
-				(this->m_ChunkY == other.m_ChunkY) &&
 				(this->m_ChunkZ == other.m_ChunkZ)
 			);
 		}