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// ProtocolRecognizer.h

// Interfaces to the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple 
// protocol versions and redirects everything to them





#pragma once

#include "Protocol.h"
#include "../ByteBuffer.h"





// Adjust these if a new protocol is added or an old one is removed:
#define MCS_CLIENT_VERSIONS "1.2.4, 1.2.5, 1.3.1, 1.3.2, 1.4.2"
#define MCS_PROTOCOL_VERSIONS "29, 39, 47"





class cProtocolRecognizer :
	public cProtocol
{
	typedef cProtocol super;
	
public:
	enum
	{
		PROTO_VERSION_1_2_5 = 29,
		PROTO_VERSION_1_3_2 = 39,
		PROTO_VERSION_1_4_2 = 47,
	} ;

	cProtocolRecognizer(cClientHandle * a_Client);
	virtual ~cProtocolRecognizer();
	
	/// Called when client sends some data:
	virtual void DataReceived(const char * a_Data, int a_Size) override;
	
	/// Sending stuff to clients (alphabetically sorted):
	virtual void SendBlockAction        (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
	virtual void SendBlockBreakAnim     (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
	virtual void SendBlockChange        (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
	virtual void SendBlockChanges       (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
	virtual void SendChat               (const AString & a_Message) override;
	virtual void SendChunkData          (int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) override;
	virtual void SendCollectPickup      (const cPickup & a_Pickup, const cPlayer & a_Player) override;
	virtual void SendDestroyEntity      (const cEntity & a_Entity) override;
	virtual void SendDisconnect         (const AString & a_Reason) override;
	virtual void SendEntHeadLook        (const cEntity & a_Entity) override;
	virtual void SendEntLook            (const cEntity & a_Entity) override;
	virtual void SendEntRelMove         (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
	virtual void SendEntRelMoveLook     (const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) override;
	virtual void SendEntityEquipment    (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
	virtual void SendEntityStatus       (const cEntity & a_Entity, char a_Status) override;
	virtual void SendGameMode           (eGameMode a_GameMode) override;
	virtual void SendHealth             (void) override;
	virtual void SendInventoryProgress  (char a_WindowID, short a_Progressbar, short a_Value) override;
	virtual void SendInventorySlot      (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
	virtual void SendKeepAlive          (int a_PingID) override;
	virtual void SendLogin              (const cPlayer & a_Player, const cWorld & a_World) override;
	virtual void SendMetadata           (const cEntity & a_Entity) override;
	virtual void SendPickupSpawn        (const cPickup & a_Pickup) override;
	virtual void SendPlayerAnimation    (const cPlayer & a_Player, char a_Animation) override;
	virtual void SendPlayerListItem     (const cPlayer & a_Player, bool a_IsOnline) override;
	virtual void SendPlayerMoveLook     (void) override;
	virtual void SendPlayerPosition     (void) override;
	virtual void SendPlayerSpawn        (const cPlayer & a_Player) override;
	virtual void SendRespawn            (void) override;
	virtual void SendSoundEffect        (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;
	virtual void SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
	virtual void SendSpawnMob           (const cMonster & a_Mob) override;
	virtual void SendSpawnObject        (const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, short a_SpeedX, short a_SpeedY, short a_SpeedZ) override;
	virtual void SendTeleportEntity     (const cEntity & a_Entity) override;
	virtual void SendThunderbolt        (int a_BlockX, int a_BlockY, int a_BlockZ) override;
	virtual void SendTimeUpdate         (Int64 a_WorldAge, Int64 a_TimeOfDay) override;
	virtual void SendUnloadChunk        (int a_ChunkX, int a_ChunkZ) override;
	virtual void SendUpdateSign         (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) override;
	virtual void SendUseBed             (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) override;
	virtual void SendWeather            (eWeather a_Weather) override;
	virtual void SendWholeInventory     (const cInventory & a_Inventory) override;
	virtual void SendWholeInventory     (const cWindow    & a_Window) override;
	virtual void SendWindowClose        (char a_WindowID) override;
	virtual void SendWindowOpen         (char a_WindowID, char a_WindowType, const AString & a_WindowTitle, char a_NumSlots) override;
	
	virtual AString GetAuthServerID(void) override;

	virtual void SendData(const char * a_Data, int a_Size) override;

protected:
	cProtocol * m_Protocol;  //< The recognized protocol
	cByteBuffer m_Buffer;    //< Buffer for the incoming data until we recognize the protocol
	
	/// Tries to recognize protocol based on m_Buffer contents; returns true if recognized
	bool TryRecognizeProtocol(void);
	
	/// Called when the recognizer gets a server ping packet; responds with server stats and destroys the client
	void HandleServerPing(void);
} ;