10 files changed, 157 insertions, 92 deletions

diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index b5560f7c1..d3383bf0d 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -52,7 +52,7 @@ public:
 	virtual ~cProtocol() {}
 	
 	/// Called when client sends some data
-	virtual void DataReceived(const char * a_Data, int a_Size) = 0;
+	virtual void DataReceived(const char * a_Data, size_t a_Size) = 0;
 	
 	// Sending stuff to clients (alphabetically sorted):
 	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) = 0;
diff --git a/src/Protocol/Protocol125.cpp b/src/Protocol/Protocol125.cpp
index 3980350f5..fe6280218 100644
--- a/src/Protocol/Protocol125.cpp
+++ b/src/Protocol/Protocol125.cpp
@@ -239,32 +239,11 @@ void cProtocol125::SendChat(const AString & a_Message)
 void cProtocol125::SendChat(const cCompositeChat & a_Message)
 {
 	// This version doesn't support composite messages, just extract each part's text and use it:
-	AString Msg;
-	const cCompositeChat::cParts & Parts = a_Message.GetParts();
-	for (cCompositeChat::cParts::const_iterator itr = Parts.begin(), end = Parts.end(); itr != end; ++itr)
-	{
-		switch ((*itr)->m_PartType)
-		{
-			case cCompositeChat::ptText:
-			case cCompositeChat::ptClientTranslated:
-			case cCompositeChat::ptRunCommand:
-			case cCompositeChat::ptSuggestCommand:
-			{
-				Msg.append((*itr)->m_Text);
-				break;
-			}
-			case cCompositeChat::ptUrl:
-			{
-				Msg.append(((cCompositeChat::cUrlPart *)(*itr))->m_Url);
-				break;
-			}
-		}  // switch (PartType)
-	}  // for itr - Parts[]
 	
 	// Send the message:
 	cCSLock Lock(m_CSPacket);
 	WriteByte  (PACKET_CHAT);
-	WriteString(Msg);
+	WriteString(a_Message.ExtractText());
 	Flush();
 }
 
@@ -1186,7 +1165,7 @@ void cProtocol125::SendData(const char * a_Data, int a_Size)
 
 
 
-void cProtocol125::DataReceived(const char * a_Data, int a_Size)
+void cProtocol125::DataReceived(const char * a_Data, size_t a_Size)
 {
 	if (!m_ReceivedData.Write(a_Data, a_Size))
 	{
@@ -1269,19 +1248,6 @@ int cProtocol125::ParsePacket(unsigned char a_PacketType)
 
 
 
-#define HANDLE_PACKET_PARSE(Packet) \
-	{ \
-		int res = Packet.Parse(m_ReceivedData); \
-		if (res < 0) \
-		{ \
-			return res; \
-		} \
-	}
-
-
-
-
-
 int cProtocol125::ParseArmAnim(void)
 {
 	HANDLE_PACKET_READ(ReadBEInt, int,  EntityID);
@@ -1375,7 +1341,16 @@ int cProtocol125::ParseEntityAction(void)
 {
 	HANDLE_PACKET_READ(ReadBEInt, int,  EntityID);
 	HANDLE_PACKET_READ(ReadChar,  char, ActionID);
-	m_Client->HandleEntityAction(EntityID, ActionID);
+
+	switch (ActionID)
+	{
+		case 1: m_Client->HandleEntityCrouch(EntityID, true);     break; // Crouch
+		case 2: m_Client->HandleEntityCrouch(EntityID, false);    break; // Uncrouch
+		case 3: m_Client->HandleEntityLeaveBed(EntityID);         break; // Leave Bed
+		case 4: m_Client->HandleEntitySprinting(EntityID, true);  break; // Start sprinting
+		case 5: m_Client->HandleEntitySprinting(EntityID, false); break; // Stop sprinting
+	}
+
 	return PARSE_OK;
 }
 
@@ -1976,6 +1951,14 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 			WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0); // Aggravated? Doesn't seem to do anything
 			break;
 		}
+		case cMonster::mtWither:
+		{
+			WriteByte(0x54); // Int at index 20
+			WriteInt(((const cWither &)a_Mob).GetNumInvulnerableTicks());
+			WriteByte(0x66); // Float at index 6
+			WriteFloat((float)(a_Mob.GetHealth()));
+			break;
+		}
 		case cMonster::mtSlime:
 		case cMonster::mtMagmaCube:
 		{
diff --git a/src/Protocol/Protocol125.h b/src/Protocol/Protocol125.h
index 1d1484a60..aca24c03a 100644
--- a/src/Protocol/Protocol125.h
+++ b/src/Protocol/Protocol125.h
@@ -11,6 +11,7 @@
 
 #include "Protocol.h"
 #include "../ByteBuffer.h"
+#include "../Entities/Painting.h"
 
 
 
@@ -24,7 +25,7 @@ public:
 	cProtocol125(cClientHandle * a_Client);
 	
 	/// Called when client sends some data:
-	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	virtual void DataReceived(const char * a_Data, size_t a_Size) override;
 	
 	/// Sending stuff to clients (alphabetically sorted):
 	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
@@ -57,9 +58,17 @@ public:
 	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) override;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) override;
-	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override {} // This protocol doesn't support such message
+	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) override 
+	{
+		// This protocol doesn't support such message
+		UNUSED(a_ID);
+		UNUSED(a_Scale);
+	} 
 	virtual void 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) override;
-	virtual void SendPaintingSpawn       (const cPainting & a_Painting) override {};
+	virtual void SendPaintingSpawn       (const cPainting & a_Painting) override 
+	{
+		UNUSED(a_Painting);
+	};
 	virtual void SendPickupSpawn         (const cPickup & a_Pickup) override;
 	virtual void SendPlayerAbilities     (void) override {}  // This protocol doesn't support such message
 	virtual void SendEntityAnimation     (const cEntity & a_Entity, char a_Animation) override;
@@ -73,7 +82,12 @@ public:
 	virtual void SendRespawn             (void) override;
 	virtual void SendExperience          (void) override;
 	virtual void SendExperienceOrb       (const cExpOrb &  a_ExpOrb) override;
-	virtual void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)                            override {} // This protocol doesn't support such message
+	virtual void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)                            override 
+	{
+		UNUSED(a_Name);
+		UNUSED(a_DisplayName);
+		UNUSED(a_Mode);
+	} // This protocol doesn't support such message
 	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override {} // This protocol doesn't support such message
 	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)                              override {} // This protocol doesn't support such message
 	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;  // a_Src coords are Block * 8
diff --git a/src/Protocol/Protocol132.cpp b/src/Protocol/Protocol132.cpp
index 1f9222a69..be9c503ed 100644
--- a/src/Protocol/Protocol132.cpp
+++ b/src/Protocol/Protocol132.cpp
@@ -100,7 +100,7 @@ cProtocol132::~cProtocol132()
 {
 	if (!m_DataToSend.empty())
 	{
-		LOGD("There are %d unsent bytes while deleting cProtocol132", m_DataToSend.size());
+		LOGD("There are " SIZE_T_FMT " unsent bytes while deleting cProtocol132", m_DataToSend.size());
 	}
 }
 
@@ -108,7 +108,7 @@ cProtocol132::~cProtocol132()
 
 
 
-void cProtocol132::DataReceived(const char * a_Data, int a_Size)
+void cProtocol132::DataReceived(const char * a_Data, size_t a_Size)
 {
 	if (m_IsEncrypted)
 	{
diff --git a/src/Protocol/Protocol132.h b/src/Protocol/Protocol132.h
index 89f4636f5..0702fbf5a 100644
--- a/src/Protocol/Protocol132.h
+++ b/src/Protocol/Protocol132.h
@@ -40,7 +40,7 @@ public:
 	virtual ~cProtocol132();
 
 	/// Called when client sends some data:
-	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	virtual void DataReceived(const char * a_Data, size_t a_Size) override;
 	
 	// Sending commands (alphabetically sorted):
 	virtual void SendBlockAction         (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
diff --git a/src/Protocol/Protocol16x.cpp b/src/Protocol/Protocol16x.cpp
index cfa27b3c4..ecb24254f 100644
--- a/src/Protocol/Protocol16x.cpp
+++ b/src/Protocol/Protocol16x.cpp
@@ -135,7 +135,7 @@ void cProtocol161::SendPlayerMaxSpeed(void)
 	WriteInt(m_Client->GetPlayer()->GetUniqueID());
 	WriteInt(1);
 	WriteString("generic.movementSpeed");
-	WriteDouble(m_Client->GetPlayer()->GetMaxSpeed());
+	WriteDouble(0.1 * m_Client->GetPlayer()->GetMaxSpeed());
 	Flush();
 }
 
@@ -184,7 +184,16 @@ int cProtocol161::ParseEntityAction(void)
 	HANDLE_PACKET_READ(ReadBEInt, int,  EntityID);
 	HANDLE_PACKET_READ(ReadChar,  char, ActionID);
 	HANDLE_PACKET_READ(ReadBEInt, int,  UnknownHorseVal);
-	m_Client->HandleEntityAction(EntityID, ActionID);
+	
+	switch (ActionID)
+	{
+		case 1: m_Client->HandleEntityCrouch(EntityID, true);     break; // Crouch
+		case 2: m_Client->HandleEntityCrouch(EntityID, false);    break; // Uncrouch
+		case 3: m_Client->HandleEntityLeaveBed(EntityID);         break; // Leave Bed
+		case 4: m_Client->HandleEntitySprinting(EntityID, true);  break; // Start sprinting
+		case 5: m_Client->HandleEntitySprinting(EntityID, false); break; // Stop sprinting
+	}
+
 	return PARSE_OK;
 }
 
@@ -258,7 +267,7 @@ void cProtocol162::SendPlayerMaxSpeed(void)
 	WriteInt(m_Client->GetPlayer()->GetUniqueID());
 	WriteInt(1);
 	WriteString("generic.movementSpeed");
-	WriteDouble(m_Client->GetPlayer()->GetMaxSpeed());
+	WriteDouble(0.1 * m_Client->GetPlayer()->GetMaxSpeed());
 	WriteShort(0);
 	Flush();
 }
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 992023464..c678fc9a0 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -29,6 +29,7 @@ Implements the 1.7.x protocol classes:
 #include "../UI/Window.h"
 #include "../BlockEntities/CommandBlockEntity.h"
 #include "../BlockEntities/MobHeadEntity.h"
+#include "../BlockEntities/FlowerPotEntity.h"
 #include "../CompositeChat.h"
 
 
@@ -97,7 +98,7 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 
 
 
-void cProtocol172::DataReceived(const char * a_Data, int a_Size)
+void cProtocol172::DataReceived(const char * a_Data, size_t a_Size)
 {
 	if (m_IsEncrypted)
 	{
@@ -686,9 +687,8 @@ void cProtocol172::SendPlayerAbilities(void)
 		Flags |= 0x04;
 	}
 	Pkt.WriteByte(Flags);
-	// TODO: Pkt.WriteFloat(m_Client->GetPlayer()->GetMaxFlyingSpeed());
-	Pkt.WriteFloat(0.05f);
-	Pkt.WriteFloat((float)m_Client->GetPlayer()->GetMaxSpeed());
+	Pkt.WriteFloat((float)(0.05 * m_Client->GetPlayer()->GetFlyingMaxSpeed()));
+	Pkt.WriteFloat((float)(0.1 * m_Client->GetPlayer()->GetMaxSpeed()));
 }
 
 
@@ -742,13 +742,14 @@ void cProtocol172::SendPlayerMaxSpeed(void)
 	Pkt.WriteInt(m_Client->GetPlayer()->GetUniqueID());
 	Pkt.WriteInt(1);  // Count
 	Pkt.WriteString("generic.movementSpeed");
-	Pkt.WriteDouble(0.1);
+	// The default game speed is 0.1, multiply that value by the relative speed:
+	Pkt.WriteDouble(0.1 * m_Client->GetPlayer()->GetNormalMaxSpeed());
 	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.WriteDouble(m_Client->GetPlayer()->GetSprintingMaxSpeed() - m_Client->GetPlayer()->GetNormalMaxSpeed());
 		Pkt.WriteByte(2);
 	}
 	else
@@ -1115,6 +1116,7 @@ void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 		case E_BLOCK_MOB_SPAWNER:   Action = 1; break; // Update mob spawner spinny mob thing
 		case E_BLOCK_COMMAND_BLOCK: Action = 2; break; // Update command block text
 		case E_BLOCK_HEAD:          Action = 4; break; // Update Mobhead entity
+		case E_BLOCK_FLOWER_POT:    Action = 5; break; // Update flower pot
 		default: ASSERT(!"Unhandled or unimplemented BlockEntity update request!"); break;
 	}
 	Pkt.WriteByte(Action);
@@ -1242,14 +1244,14 @@ void cProtocol172::AddReceivedData(const char * a_Data, int a_Size)
 		if (m_ReceivedData.GetReadableSpace() > 0)
 		{
 			AString AllData;
-			int OldReadableSpace = m_ReceivedData.GetReadableSpace();
+			size_t OldReadableSpace = m_ReceivedData.GetReadableSpace();
 			m_ReceivedData.ReadAll(AllData);
 			m_ReceivedData.ResetRead();
 			m_ReceivedData.SkipRead(m_ReceivedData.GetReadableSpace() - OldReadableSpace);
 			ASSERT(m_ReceivedData.GetReadableSpace() == OldReadableSpace);
 			AString Hex;
 			CreateHexDump(Hex, AllData.data(), AllData.size(), 16);
-			m_CommLogFile.Printf("Incoming data, %d (0x%x) unparsed bytes already present in buffer:\n%s\n",
+			m_CommLogFile.Printf("Incoming data, " SIZE_T_FMT " (0x" SIZE_T_FMT_HEX ") unparsed bytes already present in buffer:\n%s\n",
 				AllData.size(), AllData.size(), Hex.c_str()
 			);
 		}
@@ -1342,14 +1344,14 @@ void cProtocol172::AddReceivedData(const char * a_Data, int a_Size)
 		if (bb.GetReadableSpace() != 1)
 		{
 			// Read more or less than packet length, report as error
-			LOGWARNING("Protocol 1.7: Wrong number of bytes read for packet 0x%x, state %d. Read %u bytes, packet contained %u bytes",
+			LOGWARNING("Protocol 1.7: Wrong number of bytes read for packet 0x%x, state %d. Read " SIZE_T_FMT " bytes, packet contained %u bytes",
 				PacketType, m_State, bb.GetUsedSpace() - bb.GetReadableSpace(), PacketLen
 			);
 
 			// Put a message in the comm log:
 			if (g_ShouldLogCommIn)
 			{
-				m_CommLogFile.Printf("^^^^^^ Wrong number of bytes read for this packet (exp %d left, got %d left) ^^^^^^\n\n\n",
+				m_CommLogFile.Printf("^^^^^^ Wrong number of bytes read for this packet (exp %d left, got " SIZE_T_FMT " left) ^^^^^^\n\n\n",
 					1, bb.GetReadableSpace()
 				);
 				m_CommLogFile.Flush();
@@ -1364,14 +1366,14 @@ void cProtocol172::AddReceivedData(const char * a_Data, int a_Size)
 	if (g_ShouldLogCommIn && (m_ReceivedData.GetReadableSpace() > 0))
 	{
 		AString AllData;
-		int OldReadableSpace = m_ReceivedData.GetReadableSpace();
+		size_t OldReadableSpace = m_ReceivedData.GetReadableSpace();
 		m_ReceivedData.ReadAll(AllData);
 		m_ReceivedData.ResetRead();
 		m_ReceivedData.SkipRead(m_ReceivedData.GetReadableSpace() - OldReadableSpace);
 		ASSERT(m_ReceivedData.GetReadableSpace() == OldReadableSpace);
 		AString Hex;
 		CreateHexDump(Hex, AllData.data(), AllData.size(), 16);
-		m_CommLogFile.Printf("There are %d (0x%x) bytes of non-parse-able data left in the buffer:\n%s",
+		m_CommLogFile.Printf("There are " SIZE_T_FMT " (0x" SIZE_T_FMT_HEX ") bytes of non-parse-able data left in the buffer:\n%s",
 			m_ReceivedData.GetReadableSpace(), m_ReceivedData.GetReadableSpace(), Hex.c_str()
 		);
 		m_CommLogFile.Flush();
@@ -1730,7 +1732,15 @@ 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);
+
+	switch (Action)
+	{
+		case 1: m_Client->HandleEntityCrouch(PlayerID, true);     break; // Crouch
+		case 2: m_Client->HandleEntityCrouch(PlayerID, false);    break; // Uncrouch
+		case 3: m_Client->HandleEntityLeaveBed(PlayerID);         break; // Leave Bed
+		case 4: m_Client->HandleEntitySprinting(PlayerID, true);  break; // Start sprinting
+		case 5: m_Client->HandleEntitySprinting(PlayerID, false); break; // Stop sprinting
+	}
 }
 
 
@@ -2052,7 +2062,7 @@ void cProtocol172::ParseItemMetadata(cItem & a_Item, const AString & a_Metadata)
 	{
 		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());
+		LOGWARNING("Cannot unGZIP item metadata (" SIZE_T_FMT " bytes):\n%s", a_Metadata.size(), HexDump.c_str());
 		return;
 	}
 	
@@ -2062,43 +2072,54 @@ void cProtocol172::ParseItemMetadata(cItem & a_Item, const AString & a_Metadata)
 	{
 		AString HexDump;
 		CreateHexDump(HexDump, Uncompressed.data(), Uncompressed.size(), 16);
-		LOGWARNING("Cannot parse NBT item metadata: (%u bytes)\n%s", Uncompressed.size(), HexDump.c_str());
+		LOGWARNING("Cannot parse NBT item metadata: (" SIZE_T_FMT " bytes)\n%s", Uncompressed.size(), HexDump.c_str());
 		return;
 	}
 	
 	// Load enchantments and custom display names from the NBT data:
 	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")
-			)
-		)
-		{
-			EnchantmentSerializer::ParseFromNBT(a_Item.m_Enchantments, NBT, tag);
-		}
-		else if ((NBT.GetType(tag) == TAG_Compound) && (NBT.GetName(tag) == "display")) // Custom name and lore tag
+		AString TagName = NBT.GetName(tag);
+		switch (NBT.GetType(tag))
 		{
-			for (int displaytag = NBT.GetFirstChild(tag); displaytag >= 0; displaytag = NBT.GetNextSibling(displaytag))
+			case TAG_List:
 			{
-				if ((NBT.GetType(displaytag) == TAG_String) && (NBT.GetName(displaytag) == "Name")) // Custon name tag
+				if ((TagName == "ench") || (TagName == "StoredEnchantments")) // Enchantments tags
 				{
-					a_Item.m_CustomName = NBT.GetString(displaytag);
+					EnchantmentSerializer::ParseFromNBT(a_Item.m_Enchantments, NBT, tag);
 				}
-				else if ((NBT.GetType(displaytag) == TAG_List) && (NBT.GetName(displaytag) == "Lore")) // Lore tag
+				break;
+			}
+			case TAG_Compound:
+			{
+				if (TagName == "display") // Custom name and lore tag
 				{
-					AString Lore;
-
-					for (int loretag = NBT.GetFirstChild(displaytag); loretag >= 0; loretag = NBT.GetNextSibling(loretag)) // Loop through array of strings
+					for (int displaytag = NBT.GetFirstChild(tag); displaytag >= 0; displaytag = NBT.GetNextSibling(displaytag))
 					{
-						AppendPrintf(Lore, "%s`", NBT.GetString(loretag).c_str()); // Append the lore with a newline, used internally by MCS to display a new line in the client; don't forget to c_str ;)
+						if ((NBT.GetType(displaytag) == TAG_String) && (NBT.GetName(displaytag) == "Name")) // Custon name tag
+						{
+							a_Item.m_CustomName = NBT.GetString(displaytag);
+						}
+						else if ((NBT.GetType(displaytag) == TAG_List) && (NBT.GetName(displaytag) == "Lore")) // Lore tag
+						{
+							AString Lore;
+
+							for (int loretag = NBT.GetFirstChild(displaytag); loretag >= 0; loretag = NBT.GetNextSibling(loretag)) // Loop through array of strings
+							{
+								AppendPrintf(Lore, "%s`", NBT.GetString(loretag).c_str()); // Append the lore with a newline, used internally by MCS to display a new line in the client; don't forget to c_str ;)
+							}
+
+							a_Item.m_Lore = Lore;
+						}
 					}
-
-					a_Item.m_Lore = Lore;
 				}
+				else if ((TagName == "Fireworks") || (TagName == "Explosion"))
+				{
+					cFireworkItem::ParseFromNBT(a_Item.m_FireworkItem, NBT, tag, (ENUM_ITEM_ID)a_Item.m_ItemType);
+				}
+				break;
 			}
+			default: LOGD("Unimplemented NBT data when parsing!"); break;
 		}
 	}
 }
@@ -2262,7 +2283,7 @@ void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
 	WriteByte (a_Item.m_ItemCount);
 	WriteShort(a_Item.m_ItemDamage);
 	
-	if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty())
+	if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty() && (a_Item.m_ItemType != E_ITEM_FIREWORK_ROCKET) && (a_Item.m_ItemType != E_ITEM_FIREWORK_STAR))
 	{
 		WriteShort(-1);
 		return;
@@ -2301,6 +2322,10 @@ void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
 		}
 		Writer.EndCompound();
 	}
+	if ((a_Item.m_ItemType == E_ITEM_FIREWORK_ROCKET) || (a_Item.m_ItemType == E_ITEM_FIREWORK_STAR))
+	{
+		cFireworkItem::WriteToNBTCompound(a_Item.m_FireworkItem, Writer, (ENUM_ITEM_ID)a_Item.m_ItemType);
+	}
 	Writer.Finish();
 	AString Compressed;
 	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
@@ -2345,7 +2370,7 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 		case E_BLOCK_HEAD:
 		{
 			cMobHeadEntity & MobHeadEntity = (cMobHeadEntity &)a_BlockEntity;
-			
+
 			Writer.AddInt("x", MobHeadEntity.GetPosX());
 			Writer.AddInt("y", MobHeadEntity.GetPosY());
 			Writer.AddInt("z", MobHeadEntity.GetPosZ());
@@ -2355,6 +2380,18 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "Skull"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+		case E_BLOCK_FLOWER_POT:
+		{
+			cFlowerPotEntity & FlowerPotEntity = (cFlowerPotEntity &)a_BlockEntity;
+
+			Writer.AddInt("x", FlowerPotEntity.GetPosX());
+			Writer.AddInt("y", FlowerPotEntity.GetPosY());
+			Writer.AddInt("z", FlowerPotEntity.GetPosZ());
+			Writer.AddInt("Item", (Int32) FlowerPotEntity.GetItem().m_ItemType);
+			Writer.AddInt("Data", (Int32) FlowerPotEntity.GetItem().m_ItemDamage);
+			Writer.AddString("id", "FlowerPot"); // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
+			break;
+		}
 		default: break;
 	}
 
@@ -2465,10 +2502,22 @@ void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 		}
 		case cEntity::etProjectile:
 		{
-			if (((cProjectileEntity &)a_Entity).GetProjectileKind() == cProjectileEntity::pkArrow)
+			cProjectileEntity & Projectile = (cProjectileEntity &)a_Entity;
+			switch (Projectile.GetProjectileKind())
 			{
-				WriteByte(0x10);
-				WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0);
+				case cProjectileEntity::pkArrow:
+				{
+					WriteByte(0x10);
+					WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0);
+					break;
+				}
+				case cProjectileEntity::pkFirework:
+				{
+					WriteByte(0xA8);
+					WriteItem(((const cFireworkEntity &)a_Entity).GetItem());
+					break;
+				}
+				default: break;
 			}
 			break;
 		}
@@ -2486,6 +2535,7 @@ void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 			WriteByte(Frame.GetRotation());
 			break;
 		}
+		default: break;
 	}
 }
 
@@ -2610,6 +2660,15 @@ void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 			WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0);
 			break;
 		}
+
+		case cMonster::mtWither:
+		{
+			WriteByte(0x54); // Int at index 20
+			WriteInt(((const cWither &)a_Mob).GetNumInvulnerableTicks());
+			WriteByte(0x66); // Float at index 6
+			WriteFloat((float)(a_Mob.GetHealth()));
+			break;
+		}
 		
 		case cMonster::mtSlime:
 		{
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index 113501568..41163009e 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -56,7 +56,7 @@ public:
 	cProtocol172(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State);
 	
 	/** Called when client sends some data: */
-	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	virtual void DataReceived(const char * a_Data, size_t a_Size) override;
 
 	/** Sending stuff to clients (alphabetically sorted): */
 	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index 84b052146..3b9003e60 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -68,7 +68,7 @@ AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
 
 
 
-void cProtocolRecognizer::DataReceived(const char * a_Data, int a_Size)
+void cProtocolRecognizer::DataReceived(const char * a_Data, size_t a_Size)
 {
 	if (m_Protocol == NULL)
 	{
diff --git a/src/Protocol/ProtocolRecognizer.h b/src/Protocol/ProtocolRecognizer.h
index 6aaafedeb..d7fb8fad2 100644
--- a/src/Protocol/ProtocolRecognizer.h
+++ b/src/Protocol/ProtocolRecognizer.h
@@ -59,7 +59,7 @@ public:
 	static AString GetVersionTextFromInt(int a_ProtocolVersion);
 	
 	/// Called when client sends some data:
-	virtual void DataReceived(const char * a_Data, int a_Size) override;
+	virtual void DataReceived(const char * a_Data, size_t a_Size) override;
 	
 	/// Sending stuff to clients (alphabetically sorted):
 	virtual void SendAttachEntity        (const cEntity & a_Entity, const cEntity * a_Vehicle) override;