12 files changed, 380 insertions, 35 deletions

diff --git a/src/Protocol/Packetizer.cpp b/src/Protocol/Packetizer.cpp
index 9f0fd28b1..e71cba086 100644
--- a/src/Protocol/Packetizer.cpp
+++ b/src/Protocol/Packetizer.cpp
@@ -62,6 +62,7 @@ AString cPacketizer::PacketTypeToStr(cProtocol::ePacketType a_PacketType)
 		case cProtocol::pktBlockBreakAnim:         return "pktBlockBreakAnim";
 		case cProtocol::pktBlockChange:            return "pktBlockChange";
 		case cProtocol::pktBlockChanges:           return "pktBlockChanges";
+		case cProtocol::pktBossBar:                return "pktBossBar";
 		case cProtocol::pktCameraSetTo:            return "pktCameraSetTo";
 		case cProtocol::pktChatRaw:                return "pktChatRaw";
 		case cProtocol::pktCollectEntity:          return "pktCollectEntity";
diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index 7b5ad7a51..41c461e76 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -67,6 +67,7 @@ public:
 		pktBlockBreakAnim,
 		pktBlockChange,
 		pktBlockChanges,
+		pktBossBar,
 		pktCameraSetTo,
 		pktChatRaw,
 		pktCollectEntity,
@@ -362,6 +363,12 @@ public:
 	virtual void SendBlockBreakAnim             (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) = 0;
 	virtual void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) = 0;
 	virtual void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) = 0;
+	virtual void SendBossBarAdd                 (UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) = 0;
+	virtual void SendBossBarRemove              (UInt32 a_UniqueID) = 0;
+	virtual void SendBossBarUpdateHealth        (UInt32 a_UniqueID, float a_FractionFilled) = 0;
+	virtual void SendBossBarUpdateFlags         (UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) = 0;
+	virtual void SendBossBarUpdateStyle         (UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType) = 0;
+	virtual void SendBossBarUpdateTitle         (UInt32 a_UniqueID, const cCompositeChat & a_Title) = 0;
 	virtual void SendCameraSetTo                (const cEntity & a_Entity) = 0;
 	virtual void SendChat                       (const AString & a_Message, eChatType a_Type) = 0;
 	virtual void SendChat                       (const cCompositeChat & a_Message, eChatType a_Type, bool a_ShouldUseChatPrefixes) = 0;
diff --git a/src/Protocol/Protocol_1_10.h b/src/Protocol/Protocol_1_10.h
index 3d78e7079..6c27b25b5 100644
--- a/src/Protocol/Protocol_1_10.h
+++ b/src/Protocol/Protocol_1_10.h
@@ -26,7 +26,7 @@ class cProtocol_1_10_0:
 
 public:
 
-	using Super::cProtocol_1_9_4;
+	using Super::Super;
 
 protected:
 
diff --git a/src/Protocol/Protocol_1_11.h b/src/Protocol/Protocol_1_11.h
index 4c0d8a22a..731426396 100644
--- a/src/Protocol/Protocol_1_11.h
+++ b/src/Protocol/Protocol_1_11.h
@@ -28,7 +28,7 @@ class cProtocol_1_11_0:
 
 public:
 
-	using Super::cProtocol_1_10_0;
+	using Super::Super;
 
 protected:
 
@@ -62,7 +62,7 @@ class cProtocol_1_11_1:
 
 public:
 
-	using Super::cProtocol_1_11_0;
+	using Super::Super;
 
 protected:
 
diff --git a/src/Protocol/Protocol_1_12.h b/src/Protocol/Protocol_1_12.h
index 24e0eca60..7a92c156f 100644
--- a/src/Protocol/Protocol_1_12.h
+++ b/src/Protocol/Protocol_1_12.h
@@ -30,7 +30,7 @@ class cProtocol_1_12:
 
 public:
 
-	using Super::cProtocol_1_11_1;
+	using Super::Super;
 
 protected:
 
@@ -56,7 +56,7 @@ class cProtocol_1_12_1:
 
 public:
 
-	using Super::cProtocol_1_12;
+	using Super::Super;
 
 protected:
 
@@ -76,7 +76,7 @@ class cProtocol_1_12_2:
 
 public:
 
-	using Super::cProtocol_1_12_1;
+	using Super::Super;
 
 protected:
 
diff --git a/src/Protocol/Protocol_1_13.cpp b/src/Protocol/Protocol_1_13.cpp
index afb0a9cc9..77cf86333 100644
--- a/src/Protocol/Protocol_1_13.cpp
+++ b/src/Protocol/Protocol_1_13.cpp
@@ -23,6 +23,7 @@ Implements the 1.13 protocol classes:
 
 #include "../Mobs/IncludeAllMonsters.h"
 
+#include "../CompositeChat.h"
 #include "../ClientHandle.h"
 #include "../Root.h"
 #include "../Server.h"
@@ -465,7 +466,6 @@ UInt32 cProtocol_1_13::GetProtocolMobType(eMonsterType a_MobType)
 		case mtZombieVillager:        return 89;
 		default:                      return 0;
 	}
-	UNREACHABLE("Unsupported mob type");
 }
 
 
@@ -1338,6 +1338,94 @@ void cProtocol_1_13::WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mo
 ////////////////////////////////////////////////////////////////////////////////
 // cProtocol_1_13_1:
 
+void cProtocol_1_13_1::SendBossBarAdd(UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(0);  // Add
+	Pkt.WriteString(a_Title.CreateJsonString());
+	Pkt.WriteBEFloat(a_FractionFilled);
+	Pkt.WriteVarInt32([a_Color]
+	{
+		switch (a_Color)
+		{
+			case BossBarColor::Pink: return 0U;
+			case BossBarColor::Blue: return 1U;
+			case BossBarColor::Red: return 2U;
+			case BossBarColor::Green: return 3U;
+			case BossBarColor::Yellow: return 4U;
+			case BossBarColor::Purple: return 5U;
+			case BossBarColor::White: return 6U;
+		}
+	}());
+	Pkt.WriteVarInt32([a_DivisionType]
+	{
+		switch (a_DivisionType)
+		{
+			case BossBarDivisionType::None: return 0U;
+			case BossBarDivisionType::SixNotches: return 1U;
+			case BossBarDivisionType::TenNotches: return 2U;
+			case BossBarDivisionType::TwelveNotches: return 3U;
+			case BossBarDivisionType::TwentyNotches: return 4U;
+		}
+	}());
+	{
+		UInt8 Flags = 0x00;
+		if (a_DarkenSky)
+		{
+			Flags |= 0x01;
+		}
+		if (a_PlayEndMusic)
+		{
+			Flags |= 0x02;
+		}
+		if (a_CreateFog)
+		{
+			Flags |= 0x04;  // Only difference to 1.9 is fog now a separate flag
+		}
+		Pkt.WriteBEUInt8(Flags);
+	}
+}
+
+
+
+
+
+void cProtocol_1_13_1::SendBossBarUpdateFlags(UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(5);  // Update Flags
+	{
+		UInt8 Flags = 0x00;
+		if (a_DarkenSky)
+		{
+			Flags |= 0x01;
+		}
+		if (a_PlayEndMusic)
+		{
+			Flags |= 0x02;
+		}
+		if (a_CreateFog)
+		{
+			Flags |= 0x04;  // Only difference to 1.9 is fog now a separate flag
+		}
+		Pkt.WriteBEUInt8(Flags);
+	}
+}
+
+
+
+
+
 cProtocol::Version cProtocol_1_13_1::GetProtocolVersion()
 {
 	return Version::v1_13_1;
diff --git a/src/Protocol/Protocol_1_13.h b/src/Protocol/Protocol_1_13.h
index 483ee88a0..d515306e3 100644
--- a/src/Protocol/Protocol_1_13.h
+++ b/src/Protocol/Protocol_1_13.h
@@ -32,7 +32,7 @@ class cProtocol_1_13:
 
 public:
 
-	using Super::cProtocol_1_12_2;
+	using Super::Super;
 
 protected:
 
@@ -84,10 +84,13 @@ class cProtocol_1_13_1 :
 
 public:
 
-	using Super::cProtocol_1_13;
+	using Super::Super;
 
 protected:
 
+	virtual void SendBossBarAdd(UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+	virtual void SendBossBarUpdateFlags(UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+
 	virtual Version GetProtocolVersion() override;
 	virtual std::pair<short, short> GetItemFromProtocolID(UInt32 a_ProtocolID) override;
 	virtual UInt32 GetProtocolBlockType(BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta) override;
diff --git a/src/Protocol/Protocol_1_14.h b/src/Protocol/Protocol_1_14.h
index e9bbca6eb..3f328bbac 100644
--- a/src/Protocol/Protocol_1_14.h
+++ b/src/Protocol/Protocol_1_14.h
@@ -26,7 +26,7 @@ class cProtocol_1_14:
 
 public:
 
-	using Super::cProtocol_1_13_2;
+	using Super::Super;
 
 protected:
 
diff --git a/src/Protocol/Protocol_1_8.cpp b/src/Protocol/Protocol_1_8.cpp
index 91c132c8b..e3bb7e5a3 100644
--- a/src/Protocol/Protocol_1_8.cpp
+++ b/src/Protocol/Protocol_1_8.cpp
@@ -280,6 +280,60 @@ void cProtocol_1_8_0::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlo
 
 
 
+void cProtocol_1_8_0::SendBossBarAdd(UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	// No such packet here
+}
+
+
+
+
+
+void cProtocol_1_8_0::SendBossBarRemove(UInt32 a_UniqueID)
+{
+	// No such packet here
+}
+
+
+
+
+
+void cProtocol_1_8_0::SendBossBarUpdateFlags(UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	// No such packet here
+}
+
+
+
+
+
+void cProtocol_1_8_0::SendBossBarUpdateHealth(UInt32 a_UniqueID, float a_FractionFilled)
+{
+	// No such packet here
+}
+
+
+
+
+
+void cProtocol_1_8_0::SendBossBarUpdateStyle(UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType)
+{
+	// No such packet here
+}
+
+
+
+
+
+void cProtocol_1_8_0::SendBossBarUpdateTitle(UInt32 a_UniqueID, const cCompositeChat & a_Title)
+{
+	// No such packet here
+}
+
+
+
+
+
 void cProtocol_1_8_0::SendCameraSetTo(const cEntity & a_Entity)
 {
 	cPacketizer Pkt(*this, pktCameraSetTo);
@@ -356,9 +410,22 @@ void cProtocol_1_8_0::SendDestroyEntity(const cEntity & a_Entity)
 {
 	ASSERT(m_State == 3);  // In game mode?
 
-	cPacketizer Pkt(*this, pktDestroyEntity);
-	Pkt.WriteVarInt32(1);
-	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	{
+		cPacketizer Pkt(*this, pktDestroyEntity);
+		Pkt.WriteVarInt32(1);
+		Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	}
+
+	if (!a_Entity.IsMob())
+	{
+		return;
+	}
+
+	const auto & Mob = static_cast<const cMonster &>(a_Entity);
+	if ((Mob.GetMobType() == mtEnderDragon) || (Mob.GetMobType() == mtWither))
+	{
+		SendBossBarRemove(Mob.GetUniqueID());
+	}
 }
 
 
@@ -1021,54 +1088,54 @@ void cProtocol_1_8_0::SendPlayerListRemovePlayer(const cPlayer & a_Player)
 
 
 
-void cProtocol_1_8_0::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
+void cProtocol_1_8_0::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName)
 {
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, pktPlayerList);
-	Pkt.WriteVarInt32(1);
+	Pkt.WriteVarInt32(3);
 	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
-	Pkt.WriteVarInt32(static_cast<UInt32>(a_Player.GetEffectiveGameMode()));
+
+	if (a_CustomName.empty())
+	{
+		Pkt.WriteBool(false);
+	}
+	else
+	{
+		Pkt.WriteBool(true);
+		Pkt.WriteString(Printf("{\"text\":\"%s\"}", a_CustomName.c_str()));
+	}
 }
 
 
 
 
 
-void cProtocol_1_8_0::SendPlayerListUpdatePing(const cPlayer & a_Player)
+void cProtocol_1_8_0::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
 {
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, pktPlayerList);
-	Pkt.WriteVarInt32(2);
+	Pkt.WriteVarInt32(1);
 	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
-	Pkt.WriteVarInt32(static_cast<UInt32>(a_Player.GetClientHandle()->GetPing()));
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_Player.GetEffectiveGameMode()));
 }
 
 
 
 
 
-void cProtocol_1_8_0::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName)
+void cProtocol_1_8_0::SendPlayerListUpdatePing(const cPlayer & a_Player)
 {
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, pktPlayerList);
-	Pkt.WriteVarInt32(3);
+	Pkt.WriteVarInt32(2);
 	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
-
-	if (a_CustomName.empty())
-	{
-		Pkt.WriteBool(false);
-	}
-	else
-	{
-		Pkt.WriteBool(true);
-		Pkt.WriteString(Printf("{\"text\":\"%s\"}", a_CustomName.c_str()));
-	}
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_Player.GetClientHandle()->GetPing()));
 }
 
 
diff --git a/src/Protocol/Protocol_1_8.h b/src/Protocol/Protocol_1_8.h
index 4e4f2fa47..e2aadf147 100644
--- a/src/Protocol/Protocol_1_8.h
+++ b/src/Protocol/Protocol_1_8.h
@@ -45,6 +45,12 @@ public:
 	virtual void SendBlockBreakAnim	            (UInt32 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 SendBossBarAdd                 (UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+	virtual void SendBossBarRemove              (UInt32 a_UniqueID) override;
+	virtual void SendBossBarUpdateFlags         (UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+	virtual void SendBossBarUpdateHealth        (UInt32 a_UniqueID, float a_FractionFilled) override;
+	virtual void SendBossBarUpdateStyle         (UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType) override;
+	virtual void SendBossBarUpdateTitle         (UInt32 a_UniqueID, const cCompositeChat & a_Title) override;
 	virtual void SendCameraSetTo                (const cEntity & a_Entity) override;
 	virtual void SendChat                       (const AString & a_Message, eChatType a_Type) override;
 	virtual void SendChat                       (const cCompositeChat & a_Message, eChatType a_Type, bool a_ShouldUseChatPrefixes) override;
@@ -85,9 +91,9 @@ public:
 	virtual void SendPlayerListAddPlayer        (const cPlayer & a_Player) override;
 	virtual void SendPlayerListHeaderFooter     (const cCompositeChat & a_Header, const cCompositeChat & a_Footer) override;
 	virtual void SendPlayerListRemovePlayer     (const cPlayer & a_Player) override;
+	virtual void SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName) override;
 	virtual void SendPlayerListUpdateGameMode   (const cPlayer & a_Player) override;
 	virtual void SendPlayerListUpdatePing       (const cPlayer & a_Player) override;
-	virtual void SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName) override;
 	virtual void SendPlayerMaxSpeed             (void) override;
 	virtual void SendPlayerMoveLook             (void) override;
 	virtual void SendPlayerPosition             (void) override;
diff --git a/src/Protocol/Protocol_1_9.cpp b/src/Protocol/Protocol_1_9.cpp
index 5506aec1a..88f8933be 100644
--- a/src/Protocol/Protocol_1_9.cpp
+++ b/src/Protocol/Protocol_1_9.cpp
@@ -104,6 +104,172 @@ void cProtocol_1_9_0::SendAttachEntity(const cEntity & a_Entity, const cEntity &
 
 
 
+void cProtocol_1_9_0::SendBossBarAdd(UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(0);  // Add
+	Pkt.WriteString(a_Title.CreateJsonString());
+	Pkt.WriteBEFloat(a_FractionFilled);
+	Pkt.WriteVarInt32([a_Color]
+	{
+		switch (a_Color)
+		{
+			case BossBarColor::Pink: return 0U;
+			case BossBarColor::Blue: return 1U;
+			case BossBarColor::Red: return 2U;
+			case BossBarColor::Green: return 3U;
+			case BossBarColor::Yellow: return 4U;
+			case BossBarColor::Purple: return 5U;
+			case BossBarColor::White: return 6U;
+		}
+	}());
+	Pkt.WriteVarInt32([a_DivisionType]
+	{
+		switch (a_DivisionType)
+		{
+			case BossBarDivisionType::None: return 0U;
+			case BossBarDivisionType::SixNotches: return 1U;
+			case BossBarDivisionType::TenNotches: return 2U;
+			case BossBarDivisionType::TwelveNotches: return 3U;
+			case BossBarDivisionType::TwentyNotches: return 4U;
+		}
+	}());
+	{
+		UInt8 Flags = 0x00;
+		if (a_DarkenSky)
+		{
+			Flags |= 0x01;
+		}
+		if (a_PlayEndMusic || a_CreateFog)
+		{
+			Flags |= 0x02;
+		}
+		Pkt.WriteBEUInt8(Flags);
+	}
+}
+
+
+
+
+
+void cProtocol_1_9_0::SendBossBarRemove(UInt32 a_UniqueID)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(1);  // Remove
+}
+
+
+
+
+
+void cProtocol_1_9_0::SendBossBarUpdateFlags(UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(5);  // Update Flags
+	{
+		UInt8 Flags = 0x00;
+		if (a_DarkenSky)
+		{
+			Flags |= 0x01;
+		}
+		if (a_PlayEndMusic || a_CreateFog)
+		{
+			Flags |= 0x02;
+		}
+		Pkt.WriteBEUInt8(Flags);
+	}
+}
+
+
+
+
+
+void cProtocol_1_9_0::SendBossBarUpdateHealth(UInt32 a_UniqueID, float a_FractionFilled)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(2);  // Update health
+	Pkt.WriteBEFloat(a_FractionFilled);
+}
+
+
+
+
+
+void cProtocol_1_9_0::SendBossBarUpdateStyle(UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(4);  // Update health
+	Pkt.WriteVarInt32([a_Color]
+	{
+		switch (a_Color)
+		{
+			case BossBarColor::Pink: return 0U;
+			case BossBarColor::Blue: return 1U;
+			case BossBarColor::Red: return 2U;
+			case BossBarColor::Green: return 3U;
+			case BossBarColor::Yellow: return 4U;
+			case BossBarColor::Purple: return 5U;
+			case BossBarColor::White: return 6U;
+		}
+	}());
+	Pkt.WriteVarInt32([a_DivisionType]
+	{
+		switch (a_DivisionType)
+		{
+			case BossBarDivisionType::None: return 0U;
+			case BossBarDivisionType::SixNotches: return 1U;
+			case BossBarDivisionType::TenNotches: return 2U;
+			case BossBarDivisionType::TwelveNotches: return 3U;
+			case BossBarDivisionType::TwentyNotches: return 4U;
+		}
+	}());
+}
+
+
+
+
+
+void cProtocol_1_9_0::SendBossBarUpdateTitle(UInt32 a_UniqueID, const cCompositeChat & a_Title)
+{
+	ASSERT(m_State == 3);  // In game mode?
+
+	cPacketizer Pkt(*this, pktBossBar);
+	// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
+	Pkt.WriteBEUInt64(0);
+	Pkt.WriteBEUInt64(a_UniqueID);
+	Pkt.WriteVarInt32(3);  // Update title
+	Pkt.WriteString(a_Title.CreateJsonString());
+}
+
+
+
+
+
 void cProtocol_1_9_0::SendDetachEntity(const cEntity & a_Entity, const cEntity & a_PreviousVehicle)
 {
 	ASSERT(m_State == 3);  // In game mode?
@@ -488,6 +654,7 @@ UInt32 cProtocol_1_9_0::GetPacketID(cProtocol::ePacketType a_Packet)
 		case pktBlockBreakAnim:         return 0x08;
 		case pktBlockChange:            return 0x0b;
 		case pktBlockChanges:           return 0x10;
+		case pktBossBar:                return 0x0c;
 		case pktCameraSetTo:            return 0x36;
 		case pktChatRaw:                return 0x0f;
 		case pktCollectEntity:          return 0x49;
diff --git a/src/Protocol/Protocol_1_9.h b/src/Protocol/Protocol_1_9.h
index 27b005bd4..cdaeaeed9 100644
--- a/src/Protocol/Protocol_1_9.h
+++ b/src/Protocol/Protocol_1_9.h
@@ -41,6 +41,12 @@ public:
 
 	/** Sending stuff to clients (alphabetically sorted): */
 	virtual void SendAttachEntity               (const cEntity & a_Entity, const cEntity & a_Vehicle) override;
+	virtual void SendBossBarAdd                 (UInt32 a_UniqueID, const cCompositeChat & a_Title, float a_FractionFilled, BossBarColor a_Color, BossBarDivisionType a_DivisionType, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+	virtual void SendBossBarRemove              (UInt32 a_UniqueID) override;
+	virtual void SendBossBarUpdateFlags         (UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog) override;
+	virtual void SendBossBarUpdateHealth        (UInt32 a_UniqueID, float a_FractionFilled) override;
+	virtual void SendBossBarUpdateStyle         (UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType) override;
+	virtual void SendBossBarUpdateTitle         (UInt32 a_UniqueID, const cCompositeChat & a_Title) override;
 	virtual void SendDetachEntity               (const cEntity & a_Entity, const cEntity & a_PreviousVehicle) override;
 	virtual void SendEntityEquipment            (const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item) override;
 	virtual void SendEntityMetadata             (const cEntity & a_Entity) override;
@@ -153,7 +159,7 @@ class cProtocol_1_9_1:
 
 public:
 
-	using Super::cProtocol_1_9_0;
+	using Super::Super;
 
 protected:
 
@@ -175,7 +181,7 @@ class cProtocol_1_9_2:
 
 public:
 
-	using Super::cProtocol_1_9_1;
+	using Super::Super;
 
 protected:
 
@@ -195,7 +201,7 @@ class cProtocol_1_9_4:
 
 public:
 
-	using Super::cProtocol_1_9_2;
+	using Super::Super;
 
 protected: