// Protocol17x.cpp /* Implements the 1.7.x protocol classes: - cProtocol172 - release 1.7.2 protocol (#4) (others may be added later in the future for the 1.7 release series) */ #include "Globals.h" #include "Protocol17x.h" #include "ChunkDataSerializer.h" #include "../ClientHandle.h" #include "../Root.h" #include "../Server.h" #include "../World.h" #include "../WorldStorage/FastNBT.h" #include "../StringCompression.h" #include "../Entities/ExpOrb.h" #include "../Entities/Minecart.h" #include "../Entities/FallingBlock.h" #include "../Entities/Pickup.h" #include "../Entities/Player.h" #include "../Mobs/IncludeAllMonsters.h" #include "../UI/Window.h" #define HANDLE_READ(ByteBuf, Proc, Type, Var) \ Type Var; \ ByteBuf.Proc(Var); #define HANDLE_PACKET_READ(ByteBuf, Proc, Type, Var) \ Type Var; \ { \ if (!ByteBuf.Proc(Var)) \ { \ ByteBuf.CheckValid(); \ return false; \ } \ ByteBuf.CheckValid(); \ } cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) : super(a_Client), m_ServerAddress(a_ServerAddress), m_ServerPort(a_ServerPort), m_State(a_State), m_ReceivedData(32 KiB), m_OutPacketBuffer(64 KiB), m_OutPacketLenBuffer(20), // 20 bytes is more than enough for one VarInt m_IsEncrypted(false) { } void cProtocol172::DataReceived(const char * a_Data, int a_Size) { if (m_IsEncrypted) { byte Decrypted[512]; while (a_Size > 0) { int NumBytes = (a_Size > sizeof(Decrypted)) ? sizeof(Decrypted) : a_Size; m_Decryptor.ProcessData(Decrypted, (byte *)a_Data, NumBytes); AddReceivedData((const char *)Decrypted, NumBytes); a_Size -= NumBytes; a_Data += NumBytes; } } else { AddReceivedData(a_Data, a_Size); } } void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle) { cPacketizer Pkt(*this, 0x1b); // Attach Entity packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteInt((a_Vehicle != NULL) ? a_Vehicle->GetUniqueID() : 0); Pkt.WriteBool(false); } void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) { cPacketizer Pkt(*this, 0x24); // Block Action packet Pkt.WriteInt(a_BlockX); Pkt.WriteShort(a_BlockY); Pkt.WriteInt(a_BlockZ); Pkt.WriteByte(a_Byte1); Pkt.WriteByte(a_Byte2); Pkt.WriteVarInt(a_BlockType); } void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) { cPacketizer Pkt(*this, 0x24); // Block Break Animation packet Pkt.WriteInt(a_EntityID); Pkt.WriteInt(a_BlockX); Pkt.WriteInt(a_BlockY); Pkt.WriteInt(a_BlockZ); Pkt.WriteChar(a_Stage); } void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) { cPacketizer Pkt(*this, 0x23); // Block Change packet Pkt.WriteInt(a_BlockX); Pkt.WriteByte(a_BlockY); Pkt.WriteInt(a_BlockZ); Pkt.WriteVarInt(a_BlockType); Pkt.WriteByte(a_BlockMeta); } void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) { cPacketizer Pkt(*this, 0x22); // Multi Block Change packet Pkt.WriteInt(a_ChunkX); Pkt.WriteInt(a_ChunkZ); Pkt.WriteShort((short)a_Changes.size()); Pkt.WriteInt(a_Changes.size() * 4); for (sSetBlockVector::const_iterator itr = a_Changes.begin(), end = a_Changes.end(); itr != end; ++itr) { unsigned int Coords = itr->y | (itr->z << 8) | (itr->x << 12); unsigned int Blocks = itr->BlockMeta | (itr->BlockType << 4); Pkt.WriteInt((Coords << 16) | Blocks); } // for itr - a_Changes[] } void cProtocol172::SendChat(const AString & a_Message) { cPacketizer Pkt(*this, 0x02); // Chat Message packet Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str())); } void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer) { // Serialize first, before creating the Packetizer (the packetizer locks a CS) // This contains the flags and bitmasks, too const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2); cPacketizer Pkt(*this, 0x21); // Chunk Data packet Pkt.WriteInt(a_ChunkX); Pkt.WriteInt(a_ChunkZ); Pkt.WriteBuf(ChunkData.data(), ChunkData.size()); } void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player) { cPacketizer Pkt(*this, 0x0d); // Collect Item packet Pkt.WriteInt(a_Pickup.GetUniqueID()); Pkt.WriteInt(a_Player.GetUniqueID()); } void cProtocol172::SendDestroyEntity(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x13); // Destroy Entities packet Pkt.WriteByte(1); Pkt.WriteInt(a_Entity.GetUniqueID()); } void cProtocol172::SendDisconnect(const AString & a_Reason) { switch (m_State) { case 2: { // During login: cPacketizer Pkt(*this, 0); Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Reason).c_str())); break; } case 3: { // In-game: cPacketizer Pkt(*this, 0x40); Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Reason).c_str())); break; } } } void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ) { cPacketizer Pkt(*this, 0x36); // Sign Editor Open packet Pkt.WriteInt(a_BlockX); Pkt.WriteInt(a_BlockY); Pkt.WriteInt(a_BlockZ); } void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, short a_Duration) { cPacketizer Pkt(*this, 0x1D); // Entity Effect packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByte(a_EffectID); Pkt.WriteByte(a_Amplifier); Pkt.WriteShort(a_Duration); } void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) { cPacketizer Pkt(*this, 0x04); // Entity Equipment packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteShort(a_SlotNum); Pkt.WriteItem(a_Item); } void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x19); // Entity Head Look packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByteAngle(a_Entity.GetHeadYaw()); } void cProtocol172::SendEntityLook(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x16); // Entity Look packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByteAngle(a_Entity.GetYaw()); Pkt.WriteByteAngle(a_Entity.GetPitch()); } void cProtocol172::SendEntityMetadata(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x1c); // Entity Metadata packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteEntityMetadata(a_Entity); Pkt.WriteByte(0x7f); // The termination byte } void cProtocol172::SendEntityProperties(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x20); // Entity Properties packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteEntityProperties(a_Entity); } void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) { cPacketizer Pkt(*this, 0x15); // Entity Relative Move packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByte(a_RelX); Pkt.WriteByte(a_RelY); Pkt.WriteByte(a_RelZ); } void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ) { cPacketizer Pkt(*this, 0x17); // Entity Look And Relative Move packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByte(a_RelX); Pkt.WriteByte(a_RelY); Pkt.WriteByte(a_RelZ); Pkt.WriteByteAngle(a_Entity.GetYaw()); Pkt.WriteByteAngle(a_Entity.GetPitch()); } void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status) { cPacketizer Pkt(*this, 0x1a); // Entity Status packet Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteChar(a_Status); } void cProtocol172::SendEntityVelocity(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x12); // Entity Velocity packet Pkt.WriteInt(a_Entity.GetUniqueID()); // 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400)); Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400)); Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400)); } void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion) { cPacketizer Pkt(*this, 0x27); // Explosion packet Pkt.WriteFloat((float)a_BlockX); Pkt.WriteFloat((float)a_BlockY); Pkt.WriteFloat((float)a_BlockZ); Pkt.WriteFloat((float)a_Radius); Pkt.WriteInt(a_BlocksAffected.size()); for (cVector3iArray::const_iterator itr = a_BlocksAffected.begin(), end = a_BlocksAffected.end(); itr != end; ++itr) { Pkt.WriteChar((char)itr->x); Pkt.WriteChar((char)itr->y); Pkt.WriteChar((char)itr->z); } // for itr - a_BlockAffected[] Pkt.WriteFloat((float)a_PlayerMotion.x); Pkt.WriteFloat((float)a_PlayerMotion.y); Pkt.WriteFloat((float)a_PlayerMotion.z); } void cProtocol172::SendGameMode(eGameMode a_GameMode) { cPacketizer Pkt(*this, 0x2b); // Change Game State packet Pkt.WriteByte(3); // Reason: Change game mode Pkt.WriteFloat((float)a_GameMode); } void cProtocol172::SendHealth(void) { cPacketizer Pkt(*this, 0x06); // Update Health packet Pkt.WriteFloat((float)m_Client->GetPlayer()->GetHealth()); Pkt.WriteShort(m_Client->GetPlayer()->GetFoodLevel()); Pkt.WriteFloat((float)m_Client->GetPlayer()->GetFoodSaturationLevel()); } void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item) { cPacketizer Pkt(*this, 0x2f); // Set Slot packet Pkt.WriteChar(a_WindowID); Pkt.WriteShort(a_SlotNum); Pkt.WriteItem(a_Item); } void cProtocol172::SendKeepAlive(int a_PingID) { cPacketizer Pkt(*this, 0x00); // Keep Alive packet Pkt.WriteInt(a_PingID); } void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World) { // Send the Join Game packet: { cPacketizer Pkt(*this, 0x01); // Join Game packet Pkt.WriteInt(a_Player.GetUniqueID()); Pkt.WriteByte((Byte)a_Player.GetEffectiveGameMode() | (cRoot::Get()->GetServer()->IsHardcore() ? 0x08 : 0)); // Hardcore flag bit 4 Pkt.WriteChar((char)a_World.GetDimension()); Pkt.WriteByte(2); // TODO: Difficulty (set to Normal) Pkt.WriteByte(cRoot::Get()->GetServer()->GetMaxPlayers()); Pkt.WriteString("default"); // Level type - wtf? } // Send the spawn position: { cPacketizer Pkt(*this, 0x05); // Spawn Position packet Pkt.WriteInt((int)a_World.GetSpawnX()); Pkt.WriteInt((int)a_World.GetSpawnY()); Pkt.WriteInt((int)a_World.GetSpawnZ()); } // Send player abilities: SendPlayerAbilities(); } void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup) { { cPacketizer Pkt(*this, 0x0e); // Spawn Object packet Pkt.WriteVarInt(a_Pickup.GetUniqueID()); Pkt.WriteByte(2); // Type = Pickup Pkt.WriteFPInt(a_Pickup.GetPosX()); Pkt.WriteFPInt(a_Pickup.GetPosY()); Pkt.WriteFPInt(a_Pickup.GetPosZ()); Pkt.WriteByteAngle(a_Pickup.GetYaw()); Pkt.WriteByteAngle(a_Pickup.GetPitch()); Pkt.WriteInt(0); // No object data } { cPacketizer Pkt(*this, 0x1c); // Entity Metadata packet Pkt.WriteInt(a_Pickup.GetUniqueID()); Pkt.WriteByte((0x05 << 5) | 10); // Slot type + index 10 Pkt.WriteItem(a_Pickup.GetItem()); Pkt.WriteByte(0x7f); // End of metadata } } void cProtocol172::SendPlayerAbilities(void) { cPacketizer Pkt(*this, 0x39); // Player Abilities packet Byte Flags = 0; if (m_Client->GetPlayer()->IsGameModeCreative()) { Flags |= 0x01; Flags |= 0x08; // Godmode, used for creative } if (m_Client->GetPlayer()->IsFlying()) { Flags |= 0x02; } if (m_Client->GetPlayer()->CanFly()) { Flags |= 0x04; } Pkt.WriteByte(Flags); // TODO: Pkt.WriteFloat(m_Client->GetPlayer()->GetMaxFlyingSpeed()); Pkt.WriteFloat(0.05f); Pkt.WriteFloat((float)m_Client->GetPlayer()->GetMaxSpeed()); } void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animation) { cPacketizer Pkt(*this, 0x0b); // Animation packet Pkt.WriteVarInt(a_Entity.GetUniqueID()); Pkt.WriteChar(a_Animation); } void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmmount) { cPacketizer Pkt(*this, 0x2A); Pkt.WriteString(a_ParticleName); Pkt.WriteFloat(a_SrcX); Pkt.WriteFloat(a_SrcY); Pkt.WriteFloat(a_SrcZ); Pkt.WriteFloat(a_OffsetX); Pkt.WriteFloat(a_OffsetY); Pkt.WriteFloat(a_OffsetZ); Pkt.WriteFloat(a_ParticleData); Pkt.WriteInt(a_ParticleAmmount); } void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline) { cPacketizer Pkt(*this, 0x38); // Playerlist Item packet Pkt.WriteString(a_Player.GetName()); Pkt.WriteBool(a_IsOnline); Pkt.WriteShort(a_IsOnline ? a_Player.GetClientHandle()->GetPing() : 0); } void cProtocol172::SendPlayerMaxSpeed(void) { cPacketizer Pkt(*this, 0x20); // Entity Properties Pkt.WriteInt(m_Client->GetPlayer()->GetUniqueID()); Pkt.WriteInt(1); // Count Pkt.WriteString("generic.movementSpeed"); Pkt.WriteDouble(0.1); if (m_Client->GetPlayer()->IsSprinting()) { Pkt.WriteShort(1); // Modifier count Pkt.WriteInt64(0x662a6b8dda3e4c1c); Pkt.WriteInt64(0x881396ea6097278d); // UUID of the modifier Pkt.WriteDouble(0.3); Pkt.WriteByte(2); } else { Pkt.WriteShort(0); // Modifier count } } void cProtocol172::SendPlayerMoveLook(void) { cPacketizer Pkt(*this, 0x08); // Player Position And Look packet Pkt.WriteDouble(m_Client->GetPlayer()->GetPosX()); // Protocol docs say this is PosY, but #323 says this is eye-pos // Moreover, the "+ 0.001" is there because otherwise the player falls through the block they were standing on. Pkt.WriteDouble(m_Client->GetPlayer()->GetStance() + 0.001); Pkt.WriteDouble(m_Client->GetPlayer()->GetPosZ()); Pkt.WriteFloat((float)m_Client->GetPlayer()->GetYaw()); Pkt.WriteFloat((float)m_Client->GetPlayer()->GetPitch()); Pkt.WriteBool(m_Client->GetPlayer()->IsOnGround()); } void cProtocol172::SendPlayerPosition(void) { // There is no dedicated packet for this, send the whole thing: SendPlayerMoveLook(); } void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player) { // Called to spawn another player for the client cPacketizer Pkt(*this, 0x0c); // Spawn Player packet Pkt.WriteVarInt(a_Player.GetUniqueID()); Pkt.WriteString(Printf("%d", a_Player.GetUniqueID())); // TODO: Proper UUID Pkt.WriteString(a_Player.GetName()); Pkt.WriteFPInt(a_Player.GetPosX()); Pkt.WriteFPInt(a_Player.GetPosY()); Pkt.WriteFPInt(a_Player.GetPosZ()); Pkt.WriteByteAngle(a_Player.GetYaw()); Pkt.WriteByteAngle(a_Player.GetPitch()); short ItemType = a_Player.GetEquippedItem().IsEmpty() ? 0 : a_Player.GetEquippedItem().m_ItemType; Pkt.WriteShort(ItemType); Pkt.WriteByte((3 << 5) | 6); // Metadata: float + index 6 Pkt.WriteFloat((float)a_Player.GetHealth()); Pkt.WriteByte(0x7f); // Metadata: end } void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString & a_Message) { cPacketizer Pkt(*this, 0x3f); Pkt.WriteString(a_Channel); Pkt.WriteShort((short)a_Message.size()); Pkt.WriteBuf(a_Message.data(), a_Message.size()); } void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID) { cPacketizer Pkt(*this, 0x1E); Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteByte(a_EffectID); } void cProtocol172::SendRespawn(void) { cPacketizer Pkt(*this, 0x07); // Respawn packet Pkt.WriteInt(m_Client->GetPlayer()->GetWorld()->GetDimension()); Pkt.WriteByte(2); // TODO: Difficulty (set to Normal) Pkt.WriteByte((Byte)m_Client->GetPlayer()->GetEffectiveGameMode()); Pkt.WriteString("default"); } void cProtocol172::SendExperience (void) { cPacketizer Pkt(*this, 0x1F); //Experience Packet Pkt.WriteFloat(m_Client->GetPlayer()->GetXpPercentage()); Pkt.WriteShort(m_Client->GetPlayer()->GetXpLevel()); Pkt.WriteShort(m_Client->GetPlayer()->GetCurrentXp()); } void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb) { cPacketizer Pkt(*this, 0x11); Pkt.WriteVarInt(a_ExpOrb.GetUniqueID()); Pkt.WriteInt((int) a_ExpOrb.GetPosX()); Pkt.WriteInt((int) a_ExpOrb.GetPosY()); Pkt.WriteInt((int) a_ExpOrb.GetPosZ()); Pkt.WriteShort(a_ExpOrb.GetReward()); } void cProtocol172::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) // a_Src coords are Block * 8 { cPacketizer Pkt(*this, 0x29); // Sound Effect packet Pkt.WriteString(a_SoundName); Pkt.WriteInt(a_SrcX); Pkt.WriteInt(a_SrcY); Pkt.WriteInt(a_SrcZ); Pkt.WriteFloat(a_Volume); Pkt.WriteByte((Byte)(a_Pitch * 63)); } void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) { cPacketizer Pkt(*this, 0x28); // Effect packet Pkt.WriteInt(a_EffectID); Pkt.WriteInt(a_SrcX); Pkt.WriteByte(a_SrcY); Pkt.WriteInt(a_SrcZ); Pkt.WriteInt(a_Data); Pkt.WriteBool(false); } void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock) { cPacketizer Pkt(*this, 0x0e); // Spawn Object packet Pkt.WriteVarInt(a_FallingBlock.GetUniqueID()); Pkt.WriteByte(70); // Falling block Pkt.WriteFPInt(a_FallingBlock.GetPosX()); Pkt.WriteFPInt(a_FallingBlock.GetPosY()); Pkt.WriteFPInt(a_FallingBlock.GetPosZ()); Pkt.WriteByteAngle(a_FallingBlock.GetYaw()); Pkt.WriteByteAngle(a_FallingBlock.GetPitch()); Pkt.WriteInt(((int)a_FallingBlock.GetBlockType()) | (((int)a_FallingBlock.GetBlockMeta()) << 16)); // Or 0x10 Pkt.WriteShort((short)(a_FallingBlock.GetSpeedX() * 400)); Pkt.WriteShort((short)(a_FallingBlock.GetSpeedY() * 400)); Pkt.WriteShort((short)(a_FallingBlock.GetSpeedZ() * 400)); } void cProtocol172::SendSpawnMob(const cMonster & a_Mob) { cPacketizer Pkt(*this, 0x0f); // Spawn Mob packet Pkt.WriteVarInt(a_Mob.GetUniqueID()); Pkt.WriteByte((Byte)a_Mob.GetMobType()); Pkt.WriteFPInt(a_Mob.GetPosX()); Pkt.WriteFPInt(a_Mob.GetPosY()); Pkt.WriteFPInt(a_Mob.GetPosZ()); Pkt.WriteByteAngle(a_Mob.GetPitch()); Pkt.WriteByteAngle(a_Mob.GetHeadYaw()); Pkt.WriteByteAngle(a_Mob.GetYaw()); Pkt.WriteShort((short)(a_Mob.GetSpeedX() * 400)); Pkt.WriteShort((short)(a_Mob.GetSpeedY() * 400)); Pkt.WriteShort((short)(a_Mob.GetSpeedZ() * 400)); Pkt.WriteEntityMetadata(a_Mob); Pkt.WriteByte(0x7f); // Metadata terminator } void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch) { cPacketizer Pkt(*this, 0xe); // Spawn Object packet Pkt.WriteVarInt(a_Entity.GetUniqueID()); Pkt.WriteByte(a_ObjectType); Pkt.WriteFPInt(a_Entity.GetPosX()); Pkt.WriteFPInt(a_Entity.GetPosY()); Pkt.WriteFPInt(a_Entity.GetPosZ()); Pkt.WriteByteAngle(a_Entity.GetYaw()); Pkt.WriteByteAngle(a_Entity.GetPitch()); Pkt.WriteInt(a_ObjectData); if (a_ObjectData != 0) { Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400)); Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400)); Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400)); } } void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType) { cPacketizer Pkt(*this, 0xe); // Spawn Object packet Pkt.WriteVarInt(a_Vehicle.GetUniqueID()); Pkt.WriteByte(a_VehicleType); Pkt.WriteFPInt(a_Vehicle.GetPosX()); Pkt.WriteFPInt(a_Vehicle.GetPosY()); Pkt.WriteFPInt(a_Vehicle.GetPosZ()); Pkt.WriteByteAngle(a_Vehicle.GetYaw()); Pkt.WriteByteAngle(a_Vehicle.GetPitch()); Pkt.WriteInt(a_VehicleSubType); if (a_VehicleSubType != 0) { Pkt.WriteShort((short)(a_Vehicle.GetSpeedX() * 400)); Pkt.WriteShort((short)(a_Vehicle.GetSpeedY() * 400)); Pkt.WriteShort((short)(a_Vehicle.GetSpeedZ() * 400)); } } void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results) { cPacketizer Pkt(*this, 0x3a); // Tab-Complete packet Pkt.WriteVarInt(a_Results.size()); for (AStringVector::const_iterator itr = a_Results.begin(), end = a_Results.end(); itr != end; ++itr) { Pkt.WriteString(*itr); } } void cProtocol172::SendTeleportEntity(const cEntity & a_Entity) { cPacketizer Pkt(*this, 0x18); Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteFPInt(a_Entity.GetPosX()); Pkt.WriteFPInt(a_Entity.GetPosY()); Pkt.WriteFPInt(a_Entity.GetPosZ()); Pkt.WriteByteAngle(a_Entity.GetYaw()); Pkt.WriteByteAngle(a_Entity.GetPitch()); } void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ) { cPacketizer Pkt(*this, 0x2c); // Spawn Global Entity packet Pkt.WriteVarInt(0); // EntityID = 0, always Pkt.WriteByte(1); // Type = Thunderbolt Pkt.WriteFPInt(a_BlockX); Pkt.WriteFPInt(a_BlockY); Pkt.WriteFPInt(a_BlockZ); } void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay) { cPacketizer Pkt(*this, 0x03); Pkt.WriteInt64(a_WorldAge); Pkt.WriteInt64(a_TimeOfDay); } void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ) { cPacketizer Pkt(*this, 0x21); // Chunk Data packet Pkt.WriteInt(a_ChunkX); Pkt.WriteInt(a_ChunkZ); Pkt.WriteBool(true); Pkt.WriteShort(0); // Primary bitmap Pkt.WriteShort(0); // Add bitmap Pkt.WriteInt(0); // Compressed data size } void cProtocol172::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) { cPacketizer Pkt(*this, 0x33); Pkt.WriteInt(a_BlockX); Pkt.WriteShort((short)a_BlockY); Pkt.WriteInt(a_BlockZ); Pkt.WriteString(a_Line1); Pkt.WriteString(a_Line2); Pkt.WriteString(a_Line3); Pkt.WriteString(a_Line4); } void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ) { cPacketizer Pkt(*this, 0x0a); Pkt.WriteInt(a_Entity.GetUniqueID()); Pkt.WriteInt(a_BlockX); Pkt.WriteByte((Byte)a_BlockY); Pkt.WriteInt(a_BlockZ); } void cProtocol172::SendWeather(eWeather a_Weather) { { cPacketizer Pkt(*this, 0x2b); // Change Game State packet Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2); // End rain / begin rain Pkt.WriteFloat(0); // Unused for weather } // TODO: Fade effect, somehow } void cProtocol172::SendWholeInventory(const cWindow & a_Window) { cPacketizer Pkt(*this, 0x30); // Window Items packet Pkt.WriteChar(a_Window.GetWindowID()); Pkt.WriteShort(a_Window.GetNumSlots()); cItems Slots; a_Window.GetSlots(*(m_Client->GetPlayer()), Slots); for (cItems::const_iterator itr = Slots.begin(), end = Slots.end(); itr != end; ++itr) { Pkt.WriteItem(*itr); } // for itr - Slots[] } void cProtocol172::SendWindowClose(const cWindow & a_Window) { cPacketizer Pkt(*this, 0x2e); Pkt.WriteChar(a_Window.GetWindowID()); } void cProtocol172::SendWindowOpen(const cWindow & a_Window) { if (a_Window.GetWindowType() < 0) { // Do not send this packet for player inventory windows return; } cPacketizer Pkt(*this, 0x2d); Pkt.WriteChar(a_Window.GetWindowID()); Pkt.WriteChar(a_Window.GetWindowType()); Pkt.WriteString(a_Window.GetWindowTitle()); Pkt.WriteChar(a_Window.GetNumNonInventorySlots()); Pkt.WriteBool(true); if (a_Window.GetWindowType() == cWindow::wtAnimalChest) { Pkt.WriteInt(0); // TODO: The animal's EntityID } } void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value) { cPacketizer Pkt(*this, 0x31); // Window Property packet Pkt.WriteChar(a_Window.GetWindowID()); Pkt.WriteShort(a_Property); Pkt.WriteShort(a_Value); } void cProtocol172::AddReceivedData(const char * a_Data, int a_Size) { if (!m_ReceivedData.Write(a_Data, a_Size)) { // Too much data in the incoming queue, report to caller: m_Client->PacketBufferFull(); return; } // Handle all complete packets: for (;;) { UInt32 PacketLen; if (!m_ReceivedData.ReadVarInt(PacketLen)) { // Not enough data return; } if (!m_ReceivedData.CanReadBytes(PacketLen)) { // The full packet hasn't been received yet return; } cByteBuffer bb(PacketLen + 1); VERIFY(m_ReceivedData.ReadToByteBuffer(bb, (int)PacketLen)); m_ReceivedData.CommitRead(); // Write one NUL extra, so that we can detect over-reads bb.Write("\0", 1); UInt32 PacketType; if (!bb.ReadVarInt(PacketType)) { // Not enough data return; } HandlePacket(bb, PacketType); if (bb.GetReadableSpace() != 1) { // Read more or less than packet length, report as error ASSERT(!"Read wrong number of bytes!"); m_Client->PacketError(PacketType); } } // while (true) } void cProtocol172::HandlePacket(cByteBuffer & a_ByteBuffer, UInt32 a_PacketType) { switch (m_State) { case 1: { // Status switch (a_PacketType) { case 0x00: HandlePacketStatusRequest(a_ByteBuffer); return; case 0x01: HandlePacketStatusPing (a_ByteBuffer); return; } break; } case 2: { // Login switch (a_PacketType) { case 0x00: HandlePacketLoginStart (a_ByteBuffer); return; case 0x01: HandlePacketLoginEncryptionResponse(a_ByteBuffer); return; } break; } case 3: { // Game switch (a_PacketType) { case 0x00: HandlePacketKeepAlive (a_ByteBuffer); return; case 0x01: HandlePacketChatMessage (a_ByteBuffer); return; case 0x02: HandlePacketUseEntity (a_ByteBuffer); return; case 0x03: HandlePacketPlayer (a_ByteBuffer); return; case 0x04: HandlePacketPlayerPos (a_ByteBuffer); return; case 0x05: HandlePacketPlayerLook (a_ByteBuffer); return; case 0x06: HandlePacketPlayerPosLook (a_ByteBuffer); return; case 0x07: HandlePacketBlockDig (a_ByteBuffer); return; case 0x08: HandlePacketBlockPlace (a_ByteBuffer); return; case 0x09: HandlePacketSlotSelect (a_ByteBuffer); return; case 0x0a: HandlePacketAnimation (a_ByteBuffer); return; case 0x0b: HandlePacketEntityAction (a_ByteBuffer); return; case 0x0c: HandlePacketSteerVehicle (a_ByteBuffer); return; case 0x0d: HandlePacketWindowClose (a_ByteBuffer); return; case 0x0e: HandlePacketWindowClick (a_ByteBuffer); return; case 0x0f: // Confirm transaction - not used in MCS case 0x10: HandlePacketCreativeInventoryAction(a_ByteBuffer); return; case 0x12: HandlePacketUpdateSign (a_ByteBuffer); return; case 0x13: HandlePacketPlayerAbilities (a_ByteBuffer); return; case 0x14: HandlePacketTabComplete (a_ByteBuffer); return; case 0x15: HandlePacketClientSettings (a_ByteBuffer); return; case 0x16: HandlePacketClientStatus (a_ByteBuffer); return; case 0x17: HandlePacketPluginMessage (a_ByteBuffer); return; } break; } } // switch (m_State) // Unknown packet type, report to the client: m_Client->PacketUnknown(a_PacketType); } void cProtocol172::HandlePacketStatusPing(cByteBuffer & a_ByteBuffer) { Int64 Timestamp; a_ByteBuffer.ReadBEInt64(Timestamp); cPacketizer Pkt(*this, 0x01); // Ping packet Pkt.WriteInt64(Timestamp); } void cProtocol172::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer) { // Send the response: AString Response = "{\"version\":{\"name\":\"1.7.2\",\"protocol\":4},\"players\":{"; AppendPrintf(Response, "\"max\":%u,\"online\":%u,\"sample\":[]},", cRoot::Get()->GetServer()->GetMaxPlayers(), cRoot::Get()->GetServer()->GetNumPlayers() ); AppendPrintf(Response, "\"description\":{\"text\":\"%s\"},", cRoot::Get()->GetServer()->GetDescription().c_str() ); AppendPrintf(Response, "\"favicon\":\"data:image/png;base64,%s\"", cRoot::Get()->GetServer()->GetFaviconData().c_str() ); Response.append("}"); cPacketizer Pkt(*this, 0x00); // Response packet Pkt.WriteString(Response); } void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffer) { // TODO: Add protocol encryption } void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer) { AString Username; a_ByteBuffer.ReadVarUTF8String(Username); // TODO: Protocol encryption should be set up here if not localhost / auth if (!m_Client->HandleHandshake(Username)) { // The client is not welcome here, they have been sent a Kick packet already return; } // Send login success: { cPacketizer Pkt(*this, 0x02); // Login success packet Pkt.WriteString(Printf("%d", m_Client->GetUniqueID())); // TODO: proper UUID Pkt.WriteString(Username); } m_State = 3; // State = Game m_Client->HandleLogin(4, Username); } void cProtocol172::HandlePacketAnimation(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, EntityID); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Animation); m_Client->HandleAnimation(Animation); } void cProtocol172::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Status); HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, BlockY); HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Face); m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, Face, Status); } void cProtocol172::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, BlockY); HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Face); cItem Item; ReadItem(a_ByteBuffer, Item); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorX); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorY); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, CursorZ); m_Client->HandleRightClick(BlockX, BlockY, BlockZ, Face, CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem()); } void cProtocol172::HandlePacketChatMessage(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Message); m_Client->HandleChat(Message); } void cProtocol172::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Locale); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ViewDistance); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ChatFlags); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ChatColors); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Difficulty); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ShowCape); // TODO: handle in m_Client } void cProtocol172::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ActionID); switch (ActionID) { case 0: { // Respawn m_Client->HandleRespawn(); break; } case 1: { // Request stats // TODO break; } case 2: { // Open Inventory achievement // TODO break; } } } void cProtocol172::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum); cItem Item; if (!ReadItem(a_ByteBuffer, Item)) { return; } m_Client->HandleCreativeInventory(SlotNum, Item); } void cProtocol172::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, PlayerID); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Action); HANDLE_READ(a_ByteBuffer, ReadBEInt, int, JumpBoost); m_Client->HandleEntityAction(PlayerID, Action); } void cProtocol172::HandlePacketKeepAlive(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, KeepAliveID); m_Client->HandleKeepAlive(KeepAliveID); } void cProtocol172::HandlePacketPlayer(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround); // TODO: m_Client->HandlePlayerOnGround(IsOnGround); } void cProtocol172::HandlePacketPlayerAbilities(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Flags); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, FlyingSpeed); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, WalkingSpeed); bool IsFlying = false, CanFly = false; if ((Flags & 2) != 0) { IsFlying = true; } if ((Flags & 4) != 0) { CanFly = true; } m_Client->HandlePlayerAbilities(CanFly, IsFlying, FlyingSpeed, WalkingSpeed); } void cProtocol172::HandlePacketPlayerLook(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Yaw); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Pitch); HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround); m_Client->HandlePlayerLook(Yaw, Pitch, IsOnGround); } void cProtocol172::HandlePacketPlayerPos(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosX); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosY); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, Stance); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosZ); HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround); m_Client->HandlePlayerPos(PosX, PosY, PosZ, Stance, IsOnGround); } void cProtocol172::HandlePacketPlayerPosLook(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosX); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosY); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, Stance); HANDLE_READ(a_ByteBuffer, ReadBEDouble, double, PosZ); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Yaw); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Pitch); HANDLE_READ(a_ByteBuffer, ReadBool, bool, IsOnGround); m_Client->HandlePlayerMoveLook(PosX, PosY, PosZ, Stance, Yaw, Pitch, IsOnGround); } void cProtocol172::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Channel); HANDLE_READ(a_ByteBuffer, ReadBEShort, short, Length); AString Data; a_ByteBuffer.ReadString(Data, Length); m_Client->HandlePluginMessage(Channel, Data); } void cProtocol172::HandlePacketSlotSelect(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum); m_Client->HandleSlotSelected(SlotNum); } void cProtocol172::HandlePacketSteerVehicle(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Forward); HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Sideways); HANDLE_READ(a_ByteBuffer, ReadBool, bool, ShouldJump); HANDLE_READ(a_ByteBuffer, ReadBool, bool, ShouldUnmount); if (ShouldUnmount) { m_Client->HandleUnmount(); } else { m_Client->HandleSteerVehicle(Forward, Sideways); } } void cProtocol172::HandlePacketTabComplete(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Text); m_Client->HandleTabCompletion(Text); } void cProtocol172::HandlePacketUpdateSign(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX); HANDLE_READ(a_ByteBuffer, ReadBEShort, short, BlockY); HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ); HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line1); HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line2); HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line3); HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line4); m_Client->HandleUpdateSign(BlockX, BlockY, BlockZ, Line1, Line2, Line3, Line4); } void cProtocol172::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadBEInt, int, EntityID); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, MouseButton); m_Client->HandleUseEntity(EntityID, (MouseButton == 1)); } void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID); HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Button); HANDLE_READ(a_ByteBuffer, ReadBEShort, short, TransactionID); HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Mode); cItem Item; ReadItem(a_ByteBuffer, Item); // Convert Button, Mode, SlotNum and HeldItem into eClickAction: eClickAction Action; switch ((Mode << 8) | Button) { case 0x0000: Action = (SlotNum != -999) ? caLeftClick : caLeftClickOutside; break; case 0x0001: Action = (SlotNum != -999) ? caRightClick : caRightClickOutside; break; case 0x0100: Action = caShiftLeftClick; break; case 0x0101: Action = caShiftRightClick; break; case 0x0200: Action = caNumber1; break; case 0x0201: Action = caNumber2; break; case 0x0202: Action = caNumber3; break; case 0x0203: Action = caNumber4; break; case 0x0204: Action = caNumber5; break; case 0x0205: Action = caNumber6; break; case 0x0206: Action = caNumber7; break; case 0x0207: Action = caNumber8; break; case 0x0208: Action = caNumber9; break; case 0x0300: Action = caMiddleClick; break; case 0x0400: Action = (SlotNum == -999) ? caLeftClickOutsideHoldNothing : caDropKey; break; case 0x0401: Action = (SlotNum == -999) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break; case 0x0500: Action = (SlotNum == -999) ? caLeftPaintBegin : caUnknown; break; case 0x0501: Action = (SlotNum != -999) ? caLeftPaintProgress : caUnknown; break; case 0x0502: Action = (SlotNum == -999) ? caLeftPaintEnd : caUnknown; break; case 0x0504: Action = (SlotNum == -999) ? caRightPaintBegin : caUnknown; break; case 0x0505: Action = (SlotNum != -999) ? caRightPaintProgress : caUnknown; break; case 0x0506: Action = (SlotNum == -999) ? caRightPaintEnd : caUnknown; break; case 0x0600: Action = caDblClick; break; default: { LOGWARNING("Unhandled window click mode / button combination: %d (0x%x)", (Mode << 8) | Button, (Mode << 8) | Button); Action = caUnknown; break; } } m_Client->HandleWindowClick(WindowID, SlotNum, Action, Item); } void cProtocol172::HandlePacketWindowClose(cByteBuffer & a_ByteBuffer) { HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID); m_Client->HandleWindowClose(WindowID); } void cProtocol172::WritePacket(cByteBuffer & a_Packet) { cCSLock Lock(m_CSPacket); AString Pkt; a_Packet.ReadAll(Pkt); WriteVarInt(Pkt.size()); SendData(Pkt.data(), Pkt.size()); Flush(); } void cProtocol172::SendData(const char * a_Data, int a_Size) { if (m_IsEncrypted) { byte Encrypted[8192]; // Larger buffer, we may be sending lots of data (chunks) while (a_Size > 0) { int NumBytes = (a_Size > sizeof(Encrypted)) ? sizeof(Encrypted) : a_Size; m_Encryptor.ProcessData(Encrypted, (byte *)a_Data, NumBytes); m_Client->SendData((const char *)Encrypted, NumBytes); a_Size -= NumBytes; a_Data += NumBytes; } } else { m_Client->SendData(a_Data, a_Size); } } bool cProtocol172::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item) { HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemType); if (ItemType == -1) { // The item is empty, no more data follows a_Item.Empty(); return true; } a_Item.m_ItemType = ItemType; HANDLE_PACKET_READ(a_ByteBuffer, ReadChar, char, ItemCount); HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemDamage); a_Item.m_ItemCount = ItemCount; a_Item.m_ItemDamage = ItemDamage; if (ItemCount <= 0) { a_Item.Empty(); } HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, MetadataLength); if (MetadataLength <= 0) { return true; } // Read the metadata AString Metadata; if (!a_ByteBuffer.ReadString(Metadata, MetadataLength)) { return false; } ParseItemMetadata(a_Item, Metadata); return true; } void cProtocol172::ParseItemMetadata(cItem & a_Item, const AString & a_Metadata) { // Uncompress the GZIPped data: AString Uncompressed; if (UncompressStringGZIP(a_Metadata.data(), a_Metadata.size(), Uncompressed) != Z_OK) { AString HexDump; CreateHexDump(HexDump, a_Metadata.data(), a_Metadata.size(), 16); LOGWARNING("Cannot unGZIP item metadata (%u bytes):\n%s", a_Metadata.size(), HexDump.c_str()); return; } // Parse into NBT: cParsedNBT NBT(Uncompressed.data(), Uncompressed.size()); if (!NBT.IsValid()) { AString HexDump; CreateHexDump(HexDump, Uncompressed.data(), Uncompressed.size(), 16); LOGWARNING("Cannot parse NBT item metadata: (%u bytes)\n%s", Uncompressed.size(), HexDump.c_str()); return; } // Load enchantments from the NBT: for (int tag = NBT.GetFirstChild(NBT.GetRoot()); tag >= 0; tag = NBT.GetNextSibling(tag)) { if ( (NBT.GetType(tag) == TAG_List) && ( (NBT.GetName(tag) == "ench") || (NBT.GetName(tag) == "StoredEnchantments") ) ) { a_Item.m_Enchantments.ParseFromNBT(NBT, tag); } } } /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // cProtocol172::cPacketizer: cProtocol172::cPacketizer::~cPacketizer() { AString DataToSend; // Send the packet length UInt32 PacketLen = m_Out.GetUsedSpace(); m_Protocol.m_OutPacketLenBuffer.WriteVarInt(PacketLen); m_Protocol.m_OutPacketLenBuffer.ReadAll(DataToSend); m_Protocol.SendData(DataToSend.data(), DataToSend.size()); m_Protocol.m_OutPacketLenBuffer.CommitRead(); // Send the packet data: m_Out.ReadAll(DataToSend); m_Protocol.SendData(DataToSend.data(), DataToSend.size()); m_Out.CommitRead(); } void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item) { short ItemType = a_Item.m_ItemType; ASSERT(ItemType >= -1); // Check validity of packets in debug runtime if (ItemType <= 0) { // Fix, to make sure no invalid values are sent. ItemType = -1; } if (a_Item.IsEmpty()) { WriteShort(-1); return; } WriteShort(ItemType); WriteByte (a_Item.m_ItemCount); WriteShort(a_Item.m_ItemDamage); if (a_Item.m_Enchantments.IsEmpty()) { WriteShort(-1); return; } // Send the enchantments: cFastNBTWriter Writer; const char * TagName = (a_Item.m_ItemType == E_ITEM_BOOK) ? "StoredEnchantments" : "ench"; a_Item.m_Enchantments.WriteToNBTCompound(Writer, TagName); Writer.Finish(); AString Compressed; CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed); WriteShort(Compressed.size()); WriteBuf(Compressed.data(), Compressed.size()); } void cProtocol172::cPacketizer::WriteByteAngle(double a_Angle) { WriteByte((char)(255 * a_Angle / 360)); } void cProtocol172::cPacketizer::WriteFPInt(double a_Value) { int Value = (int)(a_Value * 32); WriteInt(Value); } void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity) { // Common metadata: Byte Flags = 0; if (a_Entity.IsOnFire()) { Flags |= 0x01; } if (a_Entity.IsCrouched()) { Flags |= 0x02; } if (a_Entity.IsSprinting()) { Flags |= 0x08; } if (a_Entity.IsRclking()) { Flags |= 0x10; } if (a_Entity.IsInvisible()) { Flags |= 0x20; } WriteByte(0); // Byte(0) + index 0 WriteByte(Flags); switch (a_Entity.GetEntityType()) { case cEntity::etPlayer: break; // TODO? case cEntity::etPickup: { WriteByte((5 << 5) | 10); // Slot(5) + index 10 WriteItem(((const cPickup &)a_Entity).GetItem()); break; } case cEntity::etMinecart: { WriteByte(0x51); // The following expression makes Minecarts shake more with less health or higher damage taken // It gets half the maximum health, and takes it away from the current health minus the half health: /* Health: 5 | 3 - (5 - 3) = 1 (shake power) Health: 3 | 3 - (3 - 3) = 3 Health: 1 | 3 - (1 - 3) = 5 */ WriteInt((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * ((const cMinecart &)a_Entity).LastDamage()) * 4); WriteByte(0x52); WriteInt(1); // Shaking direction, doesn't seem to affect anything WriteByte(0x73); WriteFloat((float)(((const cMinecart &)a_Entity).LastDamage() + 10)); // Damage taken / shake effect multiplyer if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpFurnace) { WriteByte(0x10); WriteByte(((const cMinecartWithFurnace &)a_Entity).IsFueled() ? 1 : 0); } break; } case cEntity::etProjectile: { if (((cProjectileEntity &)a_Entity).GetProjectileKind() == cProjectileEntity::pkArrow) { WriteByte(0x10); WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0); } break; } case cEntity::etMonster: { WriteMobMetadata((const cMonster &)a_Entity); break; } } } void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob) { switch (a_Mob.GetMobType()) { case cMonster::mtCreeper: { WriteByte(0x10); WriteByte(((const cCreeper &)a_Mob).IsBlowing() ? 1 : -1); WriteByte(0x11); WriteByte(((const cCreeper &)a_Mob).IsCharged() ? 1 : 0); break; } case cMonster::mtBat: { WriteByte(0x10); WriteByte(((const cBat &)a_Mob).IsHanging() ? 1 : 0); break; } case cMonster::mtPig: { WriteByte(0x10); WriteByte(((const cPig &)a_Mob).IsSaddled() ? 1 : 0); break; } case cMonster::mtVillager: { WriteByte(0x50); WriteInt(((const cVillager &)a_Mob).GetVilType()); break; } case cMonster::mtZombie: { WriteByte(0x0c); WriteByte(((const cZombie &)a_Mob).IsBaby() ? 1 : 0); WriteByte(0x0d); WriteByte(((const cZombie &)a_Mob).IsVillagerZombie() ? 1 : 0); WriteByte(0x0e); WriteByte(((const cZombie &)a_Mob).IsConverting() ? 1 : 0); break; } case cMonster::mtGhast: { WriteByte(0x10); WriteByte(((const cGhast &)a_Mob).IsCharging()); break; } case cMonster::mtWolf: { const cWolf & Wolf = (const cWolf &)a_Mob; Byte WolfStatus = 0; if (Wolf.IsSitting()) { WolfStatus |= 0x1; } if (Wolf.IsAngry()) { WolfStatus |= 0x2; } if (Wolf.IsTame()) { WolfStatus |= 0x4; } WriteByte(0x10); WriteByte(WolfStatus); WriteByte(0x72); WriteFloat((float)(a_Mob.GetHealth())); WriteByte(0x13); WriteByte(Wolf.IsBegging() ? 1 : 0); WriteByte(0x14); WriteByte(Wolf.GetCollarColor()); break; } case cMonster::mtSheep: { WriteByte(0x10); Byte SheepMetadata = 0; SheepMetadata = ((const cSheep &)a_Mob).GetFurColor(); if (((const cSheep &)a_Mob).IsSheared()) { SheepMetadata |= 0x10; } WriteByte(SheepMetadata); break; } case cMonster::mtEnderman: { WriteByte(0x10); WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedBlock())); WriteByte(0x11); WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedMeta())); WriteByte(0x12); WriteByte(((const cEnderman &)a_Mob).IsScreaming() ? 1 : 0); break; } case cMonster::mtSkeleton: { WriteByte(0x0d); WriteByte(((const cSkeleton &)a_Mob).IsWither() ? 1 : 0); break; } case cMonster::mtWitch: { WriteByte(0x15); WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0); break; } case cMonster::mtSlime: { WriteByte(0x10); WriteByte(((const cSlime &)a_Mob).GetSize()); break; } case cMonster::mtMagmaCube: { WriteByte(0x10); WriteByte(((const cMagmaCube &)a_Mob).GetSize()); break; } case cMonster::mtHorse: { const cHorse & Horse = (const cHorse &)a_Mob; int Flags = 0; if (Horse.IsTame()) { Flags |= 0x02; } if (Horse.IsSaddled()) { Flags |= 0x04; } if (Horse.IsChested()) { Flags |= 0x08; } if (Horse.IsBaby()) { Flags |= 0x10; } if (Horse.IsEating()) { Flags |= 0x20; } if (Horse.IsRearing()) { Flags |= 0x40; } if (Horse.IsMthOpen()) { Flags |= 0x80; } WriteByte(0x50); // Int at index 16 WriteInt(Flags); WriteByte(0x13); // Byte at index 19 WriteByte(Horse.GetHorseType()); WriteByte(0x54); // Int at index 20 int Appearance = 0; Appearance = Horse.GetHorseColor(); Appearance |= Horse.GetHorseStyle() << 8; WriteInt(Appearance); WriteByte(0x56); // Int at index 22 WriteInt(Horse.GetHorseArmour()); break; } } // switch (a_Mob.GetType()) } void cProtocol172::cPacketizer::WriteEntityProperties(const cEntity & a_Entity) { if (!a_Entity.IsMob()) { // No properties for anything else than mobs WriteInt(0); return; } const cMonster & Mob = (const cMonster &)a_Entity; // TODO: Send properties and modifiers based on the mob type WriteInt(0); // NumProperties }