1 files changed, 475 insertions, 0 deletions

diff --git a/src/Chunk.h b/src/Chunk.h
new file mode 100644
index 000000000..63a8f75cd
--- /dev/null
+++ b/src/Chunk.h
@@ -0,0 +1,475 @@
+
+#pragma once
+
+#include "Entities/Entity.h"
+#include "ChunkDef.h"
+
+#include "Simulator/FireSimulator.h"
+#include "Simulator/SandSimulator.h"
+
+
+
+
+
+#define C_CHUNK_USE_INLINE 1
+
+// Do not touch
+#if C_CHUNK_USE_INLINE
+	#define __C_CHUNK_INLINE__ inline
+#else
+	#define __C_CHUNK_INLINE__
+#endif
+
+
+
+
+
+namespace Json
+{
+	class Value;
+};
+
+
+
+
+
+class cWorld;
+class cFurnaceEntity;
+class cClientHandle;
+class cServer;
+class MTRand;
+class cPlayer;
+class cChunkMap;
+class cChestEntity;
+class cDispenserEntity;
+class cFurnaceEntity;
+class cBlockArea;
+class cPawn;
+class cPickup;
+class cChunkDataSerializer;
+class cBlockArea;
+class cFluidSimulatorData;
+class cMobCensus;
+class cMobSpawner;
+
+typedef std::list<cClientHandle *>      cClientHandleList;
+typedef cItemCallback<cEntity>          cEntityCallback;
+typedef cItemCallback<cChestEntity>     cChestCallback;
+typedef cItemCallback<cDispenserEntity> cDispenserCallback;
+typedef cItemCallback<cFurnaceEntity>   cFurnaceCallback;
+
+
+
+
+// This class is not to be used directly
+// Instead, call actions on cChunkMap (such as cChunkMap::SetBlock() etc.)
+class cChunk :
+	public cChunkDef  // The inheritance is "misused" here only to inherit the functions and constants defined in cChunkDef
+{
+public:
+	cChunk(
+		int a_ChunkX, int a_ChunkY, 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
+	);
+	~cChunk();
+
+	bool IsValid(void) const {return m_IsValid; }  // Returns true if the chunk block data is valid (loaded / generated)
+	void SetValid(void);                           // Also wakes up any calls to cChunkMap::GetHeight()
+	void MarkRegenerating(void);                   // Marks all clients attached to this chunk as wanting this chunk
+	bool IsDirty(void) const {return m_IsDirty; }  // Returns true if the chunk has changed since it was last saved
+	bool HasLoadFailed(void) const {return m_HasLoadFailed; }  // Returns true if the chunk failed to load and hasn't been generated since then
+	bool CanUnload(void);
+	
+	bool IsLightValid(void) const {return m_IsLightValid; }
+	
+	/*
+	To save a chunk, the WSSchema must:
+	1. Mark the chunk as being saved (MarkSaving() )
+	2. Get the chunk's data using GetAllData()
+	3. Mark the chunk as saved (MarkSaved() )
+	If anywhere inside this sequence another thread mmodifies the chunk, the chunk will not get marked as saved in MarkSaved()
+	*/
+	void MarkSaving(void);  // Marks the chunk as being saved. 
+	void MarkSaved(void);  // Marks the chunk as saved, if it didn't change from the last call to MarkSaving()
+	void MarkLoaded(void);  // Marks the chunk as freshly loaded. Fails if the chunk is already valid
+	void MarkLoadFailed(void);  // Marks the chunk as failed to load. Ignored is the chunk is already valid
+	
+	/// Gets all chunk data, calls the a_Callback's methods for each data type
+	void GetAllData(cChunkDataCallback & a_Callback);
+	
+	/// Sets all chunk data
+	void SetAllData(
+		const BLOCKTYPE *  a_BlockTypes, 
+		const NIBBLETYPE * a_BlockMeta,
+		const NIBBLETYPE * a_BlockLight,
+		const NIBBLETYPE * a_BlockSkyLight,
+		const cChunkDef::HeightMap * a_HeightMap,
+		const cChunkDef::BiomeMap &  a_BiomeMap,
+		cBlockEntityList & a_BlockEntities
+	);
+	
+	void SetLight(
+		const cChunkDef::BlockNibbles & a_BlockLight,
+		const cChunkDef::BlockNibbles & a_SkyLight
+	);
+	
+	/// Copies m_BlockData into a_BlockTypes, only the block types
+	void GetBlockTypes(BLOCKTYPE  * a_BlockTypes);
+	
+	/// Writes the specified cBlockArea at the coords specified. Note that the coords may extend beyond the chunk!
+	void WriteBlockArea(cBlockArea & a_Area, int a_MinBlockX, int a_MinBlockY, int a_MinBlockZ, int a_DataTypes);
+
+	/// Returns true if there is a block entity at the coords specified
+	bool HasBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ);
+	
+	/// Sets or resets the internal flag that prevents chunk from being unloaded
+	void Stay(bool a_Stay = true);
+	
+	/// Recence all mobs proximities to players in order to know what to do with them
+	void CollectMobCensus(cMobCensus& toFill);
+
+	/// Try to Spawn Monsters inside chunk
+	void SpawnMobs(cMobSpawner& a_MobSpawner);
+
+	void Tick(float a_Dt);
+
+	int GetPosX(void) const { return m_PosX; }
+	int GetPosY(void) const { return m_PosY; }
+	int GetPosZ(void) const { return m_PosZ; }
+	
+	cWorld * GetWorld(void) const { return m_World; }
+
+	void SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta );
+	// SetBlock() does a lot of work (heightmap, tickblocks, blockentities) so a BlockIdx version doesn't make sense
+	void SetBlock( const Vector3i & a_RelBlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta ) { SetBlock( a_RelBlockPos.x, a_RelBlockPos.y, a_RelBlockPos.z, a_BlockType, a_BlockMeta ); }
+	
+	/// Queues a block change till the specified world tick
+	void QueueSetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, Int64 a_Tick);
+	
+	/// Queues block for ticking (m_ToTickQueue)
+	void QueueTickBlock(int a_RelX, int a_RelY, int a_RelZ);
+	
+	/// Queues all 6 neighbors of the specified block for ticking (m_ToTickQueue). If any are outside the chunk, relays the checking to the proper neighboring chunk
+	void QueueTickBlockNeighbors(int a_RelX, int a_RelY, int a_RelZ);
+
+	void FastSetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, BLOCKTYPE a_BlockMeta );  // Doesn't force block updates on neighbors, use for simple changes such as grass growing etc.
+	BLOCKTYPE GetBlock(int a_RelX, int a_RelY, int a_RelZ) const;
+	BLOCKTYPE GetBlock(int a_BlockIdx) const;
+	void      GetBlockTypeMeta(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta);
+	void      GetBlockInfo    (int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_Meta, NIBBLETYPE & a_SkyLight, NIBBLETYPE & a_BlockLight);
+	
+	/** Returns the chunk into which the specified block belongs, by walking the neighbors.
+	Will return self if appropriate. Returns NULL if not reachable through neighbors.
+	*/
+	cChunk * GetNeighborChunk(int a_BlockX, int a_BlockZ);
+	
+	/**
+	Returns the chunk into which the relatively-specified block belongs, by walking the neighbors.
+	Will return self if appropriate. Returns NULL if not reachable through neighbors.
+	*/
+	cChunk * GetRelNeighborChunk(int a_RelX, int a_RelZ);
+	
+	/**
+	Returns the chunk into which the relatively-specified block belongs.
+	Also modifies the relative coords from this-relative to return-relative.
+	Will return self if appropriate.
+	Will try walking the neighbors first; if that fails, will query the chunkmap
+	*/
+	cChunk * GetRelNeighborChunkAdjustCoords(int & a_RelX, int & a_RelZ) const;
+	
+	EMCSBiome GetBiomeAt(int a_RelX, int a_RelZ) const {return cChunkDef::GetBiome(m_BiomeMap, a_RelX, a_RelZ); }
+	
+	void CollectPickupsByPlayer(cPlayer * a_Player);
+	
+	/// Sets the sign text. Returns true if successful. Also sends update packets to all clients in the chunk
+	bool SetSignLines(int a_RelX, int a_RelY, int a_RelZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4);
+
+	int  GetHeight( int a_X, int a_Z );
+
+	void SendBlockTo(int a_RelX, int a_RelY, int a_RelZ, cClientHandle * a_Client);
+
+	/// Adds a client to the chunk; returns true if added, false if already there
+	bool AddClient    (cClientHandle* a_Client );
+	
+	void RemoveClient (cClientHandle* a_Client );
+	bool HasClient    (cClientHandle* a_Client );
+	bool HasAnyClients(void);  // Returns true if theres any client in the chunk; false otherwise
+
+	void AddEntity(cEntity * a_Entity);
+	void RemoveEntity(cEntity * a_Entity);
+	bool HasEntity(int a_EntityID);
+	
+	/// Calls the callback for each entity; returns true if all entities processed, false if the callback aborted by returning true
+	bool ForEachEntity(cEntityCallback & a_Callback);  // Lua-accessible
+
+	/// Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found.
+	bool DoWithEntityByID(int a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult);  // Lua-accessible
+
+	/// Calls the callback for each chest; returns true if all chests processed, false if the callback aborted by returning true
+	bool ForEachChest(cChestCallback & a_Callback);  // Lua-accessible
+
+	/// Calls the callback for each dispenser; returns true if all dispensers processed, false if the callback aborted by returning true
+	bool ForEachDispenser(cDispenserCallback & a_Callback);
+
+	/// Calls the callback for each dropper; returns true if all droppers processed, false if the callback aborted by returning true
+	bool ForEachDropper(cDropperCallback & a_Callback);
+
+	/// Calls the callback for each dropspenser; returns true if all dropspensers processed, false if the callback aborted by returning true
+	bool ForEachDropSpenser(cDropSpenserCallback & a_Callback);
+
+	/// Calls the callback for each furnace; returns true if all furnaces processed, false if the callback aborted by returning true
+	bool ForEachFurnace(cFurnaceCallback & a_Callback);  // Lua-accessible
+	
+	/// Calls the callback for the chest at the specified coords; returns false if there's no chest at those coords, true if found
+	bool DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, cChestCallback & a_Callback);  // Lua-acessible
+
+	/// Calls the callback for the dispenser at the specified coords; returns false if there's no dispenser at those coords or callback returns true, returns true if found
+	bool DoWithDispenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDispenserCallback & a_Callback);
+
+	/// Calls the callback for the dispenser at the specified coords; returns false if there's no dropper at those coords or callback returns true, returns true if found
+	bool DoWithDropperAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropperCallback & a_Callback);
+
+	/// Calls the callback for the dispenser at the specified coords; returns false if there's no dropspenser at those coords or callback returns true, returns true if found
+	bool DoWithDropSpenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropSpenserCallback & a_Callback);
+
+	/// Calls the callback for the furnace at the specified coords; returns false if there's no furnace at those coords or callback returns true, returns true if found
+	bool DoWithFurnaceAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFurnaceCallback & a_Callback);  // Lua-accessible
+
+	/// Retrieves the test on the sign at the specified coords; returns false if there's no sign at those coords, true if found
+	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
+
+	void UseBlockEntity(cPlayer * a_Player, int a_X, int a_Y, int a_Z);  // [x, y, z] in world block coords
+
+	void CalculateLighting(); // Recalculate right now
+	void CalculateHeightmap();
+
+	// Broadcast various packets to all clients of this chunk:
+	// (Please keep these alpha-sorted)
+	void BroadcastAttachEntity       (const cEntity & a_Entity, const cEntity * a_Vehicle);
+	void BroadcastBlockAction        (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = NULL);
+	void BroadcastBlockBreakAnimation(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = NULL);
+	void BroadcastBlockEntity        (int a_BlockX, int a_BlockY, int a_BlockZ, const cClientHandle * a_Exclude = NULL);
+	void BroadcastChunkData          (cChunkDataSerializer & a_Serializer, const cClientHandle * a_Exclude = NULL);
+	void BroadcastCollectPickup      (const cPickup & a_Pickup, const cPlayer & a_Player, const cClientHandle * a_Exclude = NULL);
+	void BroadcastDestroyEntity      (const cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityEquipment    (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityHeadLook     (const cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityLook         (const cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityMetadata     (const cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityRelMove      (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityRelMoveLook  (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityStatus       (const cEntity & a_Entity, char a_Status, const cClientHandle * a_Exclude = NULL);
+	void BroadcastEntityVelocity     (const cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastPlayerAnimation    (const cPlayer & a_Player, char a_Animation, const cClientHandle * a_Exclude = NULL);
+	void BroadcastSoundEffect        (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch, const cClientHandle * a_Exclude = NULL);  // a_Src coords are Block * 8
+	void BroadcastSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data, const cClientHandle * a_Exclude = NULL);
+	void BroadcastSpawnEntity        (cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
+	void BroadcastThunderbolt        (int a_BlockX, int a_BlockY, int a_BlockZ, const cClientHandle * a_Exclude = NULL);
+	void BroadcastUseBed             (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ );
+	
+	void SendBlockEntity             (int a_BlockX, int a_BlockY, int a_BlockZ, cClientHandle & a_Client);
+
+	Vector3i PositionToWorldPosition(const Vector3i & a_RelPos)
+	{
+		return PositionToWorldPosition(a_RelPos.x, a_RelPos.y, a_RelPos.z);
+	}
+	
+	void     PositionToWorldPosition(int a_RelX, int a_RelY, int a_RelZ, int & a_BlockX, int & a_BlockY, int & a_BlockZ);
+	Vector3i PositionToWorldPosition(int a_RelX, int a_RelY, int a_RelZ );
+
+	inline void MarkDirty(void)
+	{
+		m_IsDirty = true;
+		m_IsSaving = false;
+	}
+	
+	/// Sets the blockticking to start at the specified block. Only one blocktick may be set, second call overwrites the first call
+	inline void SetNextBlockTick(int a_RelX, int a_RelY, int a_RelZ)
+	{
+		m_BlockTickX = a_RelX;
+		m_BlockTickY = a_RelY;
+		m_BlockTickZ = a_RelZ;
+	}
+	
+	inline NIBBLETYPE GetMeta(int a_RelX, int a_RelY, int a_RelZ) const              {return cChunkDef::GetNibble(m_BlockMeta, a_RelX, a_RelY, a_RelZ); }
+	inline NIBBLETYPE GetMeta(int a_BlockIdx) const                                  {return cChunkDef::GetNibble(m_BlockMeta, a_BlockIdx); }
+	inline void       SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Meta) {       cChunkDef::SetNibble(m_BlockMeta, a_RelX, a_RelY, a_RelZ, a_Meta); }
+	inline void       SetMeta(int a_BlockIdx, NIBBLETYPE a_Meta)                     {       cChunkDef::SetNibble(m_BlockMeta, a_BlockIdx, a_Meta); }
+
+	inline NIBBLETYPE GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const {return cChunkDef::GetNibble(m_BlockLight, a_RelX, a_RelY, a_RelZ); }
+	inline NIBBLETYPE GetSkyLight  (int a_RelX, int a_RelY, int a_RelZ) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_RelX, a_RelY, a_RelZ); }
+	inline NIBBLETYPE GetBlockLight(int a_Idx) const {return cChunkDef::GetNibble(m_BlockLight, a_Idx); }
+	inline NIBBLETYPE GetSkyLight  (int a_Idx) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_Idx); }
+	
+	/// Same as GetBlock(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta) const;
+	
+	/// Same as GetBlockType(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlockType(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType) const;
+	
+	/// Same as GetBlockMeta(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE & a_BlockMeta) const;
+	
+	/// Same as GetBlockBlockLight(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlockBlockLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE & a_BlockLight) const;
+
+	/// Same as GetBlockSkyLight(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlockSkyLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE & a_SkyLight) const;
+
+	/// Queries both BlockLight and SkyLight, relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelGetBlockLights(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE & a_BlockLight, NIBBLETYPE & a_SkyLight) const;
+
+	/// Same as SetBlock(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelSetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
+
+	/// Same as FastSetBlock(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success
+	bool UnboundedRelFastSetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
+	
+	/// Same as QueueTickBlock(), but relative coords needn't be in this chunk (uses m_Neighbor-s in such a case), ignores unsuccessful attempts
+	void UnboundedQueueTickBlock(int a_RelX, int a_RelY, int a_RelZ);
+
+	/// Light alterations based on time
+	NIBBLETYPE GetTimeAlteredLight(NIBBLETYPE a_Skylight) const;
+
+
+	// Simulator data:
+	cFireSimulatorChunkData & GetFireSimulatorData (void) { return m_FireSimulatorData; }
+	cFluidSimulatorData *     GetWaterSimulatorData(void) { return m_WaterSimulatorData; }
+	cFluidSimulatorData *     GetLavaSimulatorData (void) { return m_LavaSimulatorData; }
+	cSandSimulatorChunkData & GetSandSimulatorData (void) { return m_SandSimulatorData; }
+
+	cBlockEntity * GetBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ);
+	cBlockEntity * GetBlockEntity(const Vector3i & a_BlockPos) { return GetBlockEntity(a_BlockPos.x, a_BlockPos.y, a_BlockPos.z); }
+
+private:
+
+	friend class cChunkMap;
+	
+	struct sSetBlockQueueItem
+	{
+		int m_RelX, m_RelY, m_RelZ;
+		BLOCKTYPE m_BlockType;
+		NIBBLETYPE m_BlockMeta;
+		Int64 m_Tick;
+		
+		sSetBlockQueueItem(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, Int64 a_Tick) :
+			m_RelX(a_RelX), m_RelY(a_RelY), m_RelZ(a_RelZ), m_BlockType(a_BlockType), m_BlockMeta(a_BlockMeta), m_Tick(a_Tick)
+		{
+		}
+	} ;
+
+	typedef std::vector<sSetBlockQueueItem> sSetBlockQueueVector;
+	
+
+	bool m_IsValid;        // True if the chunk is loaded / generated
+	bool m_IsLightValid;   // True if the blocklight and skylight are calculated
+	bool m_IsDirty;        // True if the chunk has changed since it was last saved
+	bool m_IsSaving;       // True if the chunk is being saved
+	bool m_HasLoadFailed;  // True if chunk failed to load and hasn't been generated yet since then
+	
+	std::vector<unsigned int> m_ToTickBlocks;
+	sSetBlockVector           m_PendingSendBlocks;  ///< Blocks that have changed and need to be sent to all clients
+	
+	sSetBlockQueueVector m_SetBlockQueue;  ///< Block changes that are queued to a specific tick
+	
+	// A critical section is not needed, because all chunk access is protected by its parent ChunkMap's csLayers
+	cClientHandleList  m_LoadedByClient;
+	cClientHandleList  m_UnloadQuery;
+	cEntityList        m_Entities;
+	cBlockEntityList   m_BlockEntities;
+	
+	/// Number of times the chunk has been requested to stay (by various cChunkStay objects); if zero, the chunk can be unloaded
+	int m_StayCount;
+
+	int m_PosX, m_PosY, m_PosZ;
+	cWorld *    m_World;
+	cChunkMap * m_ChunkMap;
+
+	// TODO: Make these pointers and don't allocate what isn't needed
+	BLOCKTYPE  m_BlockTypes   [cChunkDef::NumBlocks];
+	NIBBLETYPE m_BlockMeta    [cChunkDef::NumBlocks / 2];
+	NIBBLETYPE m_BlockLight   [cChunkDef::NumBlocks / 2];
+	NIBBLETYPE m_BlockSkyLight[cChunkDef::NumBlocks / 2];
+
+	cChunkDef::HeightMap m_HeightMap;
+	cChunkDef::BiomeMap  m_BiomeMap;
+
+	int m_BlockTickX, m_BlockTickY, m_BlockTickZ;
+	
+	cChunk * m_NeighborXM;  // Neighbor at [X - 1, Z]
+	cChunk * m_NeighborXP;  // Neighbor at [X + 1, Z]
+	cChunk * m_NeighborZM;  // Neighbor at [X,     Z - 1]
+	cChunk * m_NeighborZP;  // Neighbor at [X,     Z + 1]
+	
+	// Per-chunk simulator data:
+	cFireSimulatorChunkData m_FireSimulatorData;
+	cFluidSimulatorData *   m_WaterSimulatorData;
+	cFluidSimulatorData *   m_LavaSimulatorData;
+	cSandSimulatorChunkData m_SandSimulatorData;
+
+
+	// pick up a random block of this chunk
+	void getRandomBlockCoords(int& a_X, int& a_Y, int& a_Z);
+	void getThreeRandomNumber(int& a_X, int& a_Y, int& a_Z,int a_MaxX, int a_MaxY, int a_MaxZ);
+
+	void RemoveBlockEntity(cBlockEntity * a_BlockEntity);
+	void AddBlockEntity   (cBlockEntity * a_BlockEntity);
+
+	void SpreadLightOfBlock(NIBBLETYPE * a_LightBuffer, int a_X, int a_Y, int a_Z, char a_Falloff);
+
+	/// Creates a block entity for each block that needs a block entity and doesn't have one in the list
+	void CreateBlockEntities(void);
+	
+	/// Wakes up each simulator for its specific blocks; through all the blocks in the chunk
+	void WakeUpSimulators(void);
+	
+	// Makes a copy of the list
+	cClientHandleList GetAllClients(void) const {return m_LoadedByClient; }
+
+	/// Sends m_PendingSendBlocks to all clients
+	void BroadcastPendingBlockChanges(void);
+	
+	/// Checks the block scheduled for checking in m_ToTickBlocks[]
+	void CheckBlocks(void);
+	
+	/// Ticks several random blocks in the chunk
+	void TickBlocks(void);
+	
+	/// Adds snow to the top of snowy biomes and hydrates farmland / fills cauldrons in rainy biomes
+	void ApplyWeatherToTop(void);
+	
+	/// Grows sugarcane by the specified number of blocks, but no more than 3 blocks high (used by both bonemeal and ticking)
+	void GrowSugarcane   (int a_RelX, int a_RelY, int a_RelZ, int a_NumBlocks);
+	
+	/// Grows cactus by the specified number of blocks, but no more than 3 blocks high (used by both bonemeal and ticking)
+	void GrowCactus      (int a_RelX, int a_RelY, int a_RelZ, int a_NumBlocks);
+
+	/// Grows a melon or a pumpkin next to the block specified (assumed to be the stem)
+	void GrowMelonPumpkin(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType, MTRand & a_Random);
+	
+	/// Checks if a leaves block at the specified coords has a log up to 4 blocks away connected by other leaves blocks (false if no log)
+	bool HasNearLog(cBlockArea & a_Area, int a_BlockX, int a_BlockY, int a_BlockZ);
+
+	/// Called by Tick() when an entity moves out of this chunk into a neighbor; moves the entity and sends spawn / despawn packet to clients
+	void MoveEntityToNewChunk(cEntity * a_Entity);
+	
+	/// Processes all blocks that have been scheduled for replacement by the QueueSetBlock() function
+	void ProcessQueuedSetBlocks(void);
+};
+
+typedef cChunk * cChunkPtr;
+
+typedef std::list<cChunkPtr> cChunkPtrList;
+
+
+
+
+
+#if C_CHUNK_USE_INLINE
+	#include "Chunk.inl.h"
+#endif
+
+
+
+