23 files changed, 765 insertions, 92 deletions

diff --git a/Server/Plugins/APIDump/APIDesc.lua b/Server/Plugins/APIDump/APIDesc.lua
index c84260903..411ee95f4 100644
--- a/Server/Plugins/APIDump/APIDesc.lua
+++ b/Server/Plugins/APIDump/APIDesc.lua
@@ -1569,6 +1569,128 @@ end
 					},
 					Notes = "Sends a BlockChange packet to the client. This can be used to create fake blocks only for that player.",
 				},
+				SendBossBarAdd =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+						{
+							Name = "Title",
+							Type = "cCompositeChat",
+						},
+						{
+							Name = "FractionFilled",
+							Type = "number",
+						},
+						{
+							Name = "Colour",
+							Type = "BossBarColor",
+						},
+						{
+							Name = "DivisionType",
+							Type = "BossBarDivisionType",
+						},
+						{
+							Name = "DarkenSky",
+							Type = "boolean",
+						},
+						{
+							Name = "PlayEndMusic",
+							Type = "boolean",
+						},
+						{
+							Name = "CreateFog",
+							Type = "boolean",
+						},
+					},
+					Notes = "Creates a boss bar on the client's UI. The boss bar is independent of any entity and has a lifetime and properties fully controlled by the plugin. Plugins are responsible for assigning a unique ID and removal.",
+				},
+				SendBossBarUpdateFlags =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+						{
+							Name = "DarkenSky",
+							Type = "boolean",
+						},
+						{
+							Name = "PlayEndMusic",
+							Type = "boolean",
+						},
+						{
+							Name = "CreateFog",
+							Type = "boolean",
+						},
+					},
+					Notes = "Updates a boss bar on the client's UI. Only updates some meta flags for additional effects.",
+				},
+				SendBossBarUpdateStyle =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+						{
+							Name = "Color",
+							Type = "BossBarColor",
+						},
+						{
+							Name = "DivisionType",
+							Type = "BossBarDivisionType",
+						},
+					},
+					Notes = "Updates a boss bar on the client's UI. Only updates the visuals of the Boss Bar.",
+				},
+				SendBossBarUpdateTitle =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+						{
+							Name = "Title",
+							Type = "cCompositeChat",
+						},
+					},
+					Notes = "Updates a boss bar on the client's UI. Only Updates the text at the top.",
+				},
+				SendBossBarRemove =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+					},
+					Notes = "Removes the boss bar with the given ID from the client's UI.",
+				},
+				SendBossBarUpdateHealth =
+				{
+					Params =
+					{
+						{
+							Name = "UniqueID",
+							Type = "number",
+						},
+						{
+							Name = "FractionFilled",
+							Type = "number",
+						},
+					},
+					Notes = "Updates the health displayed by the boss bar with the given ID.",
+				},
 				SendEntityAnimation =
 				{
 					Params =
@@ -13120,6 +13242,73 @@ end
 			},  -- ConstantGroups
 		},  -- cWindow
 
+		BossBarColor =
+		{
+			Desc = [[
+				An enumeration of boss bar display colours which can be used with {{cClientHandle#SendBossBarAdd|SendBossBarAdd}}.
+			]],
+			Constants =
+			{
+				Pink =
+				{
+					Notes = "A pink boss bar."
+				},
+				Blue =
+				{
+					Notes = "A blue boss bar."
+				},
+				Red =
+				{
+					Notes = "A red boss bar."
+				},
+				Green =
+				{
+					Notes = "A green boss bar."
+				},
+				Yellow =
+				{
+					Notes = "A yellow boss bar."
+				},
+				Purple =
+				{
+					Notes = "A purple boss bar."
+				},
+				White =
+				{
+					Notes = "A white boss bar."
+				},
+			},
+		},
+		BossBarDivisionType =
+		{
+			Desc = [[
+				An enumeration of boss bar division types which can be used with {{cClientHandle#SendBossBarAdd|SendBossBarAdd}}.
+				These constants control the number of notches the bar itself renders with.
+			]],
+			Constants =
+			{
+				None =
+				{
+					Notes = "A completely smooth boss bar."
+				},
+				SixNotches =
+				{
+					Notes = "A six-notch'd boss bar."
+				},
+				TenNotches =
+				{
+					Notes = "A ten-notch'd boss bar."
+				},
+				TwelveNotches =
+				{
+					Notes = "A twelve notch'd boss bar."
+				},
+				TwentyNotches =
+				{
+					Notes = "A twenty notch'd boss bar."
+				},
+			},
+		},
 		EffectID =
 		{
 			Desc = [[
diff --git a/src/Blocks/BroadcastInterface.h b/src/Blocks/BroadcastInterface.h
index 93dbe4961..552686cf8 100644
--- a/src/Blocks/BroadcastInterface.h
+++ b/src/Blocks/BroadcastInterface.h
@@ -24,6 +24,7 @@ public:
 	virtual void BroadcastBlockAction                (Vector3i a_BlockPos, Byte a_Byte1, Byte a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastBlockBreakAnimation        (UInt32 a_EntityID, Vector3i a_BlockPos, Int8 a_Stage, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastBlockEntity                (Vector3i a_BlockPos, const cClientHandle * a_Exclude = nullptr) = 0;
+	virtual void BroadcastBossBarUpdateHealth        (const cEntity & a_Entity, UInt32 a_UniqueID, float a_FractionFilled) = 0;
 	virtual void BroadcastChat                       (const AString & a_Message, const cClientHandle * a_Exclude = nullptr, eMessageType a_ChatPrefix = mtCustom) = 0;
 	virtual void BroadcastChatInfo                   (const AString & a_Message, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastChatFailure                (const AString & a_Message, const cClientHandle * a_Exclude = nullptr) = 0;
@@ -50,9 +51,9 @@ public:
 	virtual void BroadcastPlayerListAddPlayer        (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastPlayerListHeaderFooter     (const cCompositeChat & a_Header, const cCompositeChat & a_Footer) = 0;
 	virtual void BroadcastPlayerListRemovePlayer     (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) = 0;
+	virtual void BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastPlayerListUpdateGameMode   (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastPlayerListUpdatePing       (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) = 0;
-	virtual void BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastRemoveEntityEffect         (const cEntity & a_Entity, int a_EffectID, const cClientHandle * a_Exclude = nullptr) = 0;
 	virtual void BroadcastScoreboardObjective        (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode) = 0;
 	virtual void BroadcastScoreUpdate                (const AString & a_Objective, const AString & a_PlayerName, cObjective::Score a_Score, Byte a_Mode) = 0;
diff --git a/src/Broadcaster.cpp b/src/Broadcaster.cpp
index 98759a58b..c8d2de615 100644
--- a/src/Broadcaster.cpp
+++ b/src/Broadcaster.cpp
@@ -171,6 +171,19 @@ void cWorld::BroadcastBlockEntity(Vector3i a_BlockPos, const cClientHandle * a_E
 
 
 
+void cWorld::BroadcastBossBarUpdateHealth(const cEntity & a_Entity, UInt32 a_UniqueID, float a_FractionFilled)
+{
+	ForClientsWithEntity(a_Entity, *this, nullptr, [&](cClientHandle & a_Client)
+		{
+			a_Client.SendBossBarUpdateHealth(a_UniqueID, a_FractionFilled);
+		}
+	);
+}
+
+
+
+
+
 void cWorld::BroadcastChat(const AString & a_Message, const cClientHandle * a_Exclude, eMessageType a_ChatPrefix)
 {
 	ForClientsInWorld(*this, a_Exclude, [&](cClientHandle & a_Client)
@@ -444,11 +457,11 @@ void cWorld::BroadcastPlayerListRemovePlayer(const cPlayer & a_Player, const cCl
 
 
 
-void cWorld::BroadcastPlayerListUpdateGameMode(const cPlayer & a_Player, const cClientHandle * a_Exclude)
+void cWorld::BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude)
 {
 	ForClientsInWorld(*this, a_Exclude, [&](cClientHandle & a_Client)
 		{
-			a_Client.SendPlayerListUpdateGameMode(a_Player);
+			a_Client.SendPlayerListUpdateDisplayName(a_Player, a_CustomName);
 		}
 	);
 }
@@ -457,11 +470,11 @@ void cWorld::BroadcastPlayerListUpdateGameMode(const cPlayer & a_Player, const c
 
 
 
-void cWorld::BroadcastPlayerListUpdatePing(const cPlayer & a_Player, const cClientHandle * a_Exclude)
+void cWorld::BroadcastPlayerListUpdateGameMode(const cPlayer & a_Player, const cClientHandle * a_Exclude)
 {
 	ForClientsInWorld(*this, a_Exclude, [&](cClientHandle & a_Client)
 		{
-			a_Client.SendPlayerListUpdatePing(a_Player);
+			a_Client.SendPlayerListUpdateGameMode(a_Player);
 		}
 	);
 }
@@ -470,11 +483,11 @@ void cWorld::BroadcastPlayerListUpdatePing(const cPlayer & a_Player, const cClie
 
 
 
-void cWorld::BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude)
+void cWorld::BroadcastPlayerListUpdatePing(const cPlayer & a_Player, const cClientHandle * a_Exclude)
 {
 	ForClientsInWorld(*this, a_Exclude, [&](cClientHandle & a_Client)
 		{
-			a_Client.SendPlayerListUpdateDisplayName(a_Player, a_CustomName);
+			a_Client.SendPlayerListUpdatePing(a_Player);
 		}
 	);
 }
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 3c003e132..683a243fe 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -2188,6 +2188,60 @@ void cClientHandle::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlock
 
 
 
+void cClientHandle::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)
+{
+	m_Protocol->SendBossBarAdd(a_UniqueID, a_Title, a_FractionFilled, a_Color, a_DivisionType, a_DarkenSky, a_PlayEndMusic, a_CreateFog);
+}
+
+
+
+
+
+void cClientHandle::SendBossBarUpdateFlags(UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog)
+{
+	m_Protocol->SendBossBarUpdateFlags(a_UniqueID, a_DarkenSky, a_PlayEndMusic, a_CreateFog);
+}
+
+
+
+
+
+void cClientHandle::SendBossBarUpdateStyle(UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType)
+{
+	m_Protocol->SendBossBarUpdateStyle(a_UniqueID, a_Color, a_DivisionType);
+}
+
+
+
+
+
+void cClientHandle::SendBossBarUpdateTitle(UInt32 a_UniqueID, const cCompositeChat & a_Title)
+{
+	m_Protocol->SendBossBarUpdateTitle(a_UniqueID, a_Title);
+}
+
+
+
+
+
+void cClientHandle::SendBossBarRemove(UInt32 a_UniqueID)
+{
+	m_Protocol->SendBossBarRemove(a_UniqueID);
+}
+
+
+
+
+
+void cClientHandle::SendBossBarUpdateHealth(UInt32 a_UniqueID, float a_FractionFilled)
+{
+	m_Protocol->SendBossBarUpdateHealth(a_UniqueID, a_FractionFilled);
+}
+
+
+
+
+
 void cClientHandle::SendCameraSetTo(const cEntity & a_Entity)
 {
 	m_Protocol->SendCameraSetTo(a_Entity);
@@ -2643,27 +2697,27 @@ void cClientHandle::SendPlayerListRemovePlayer(const cPlayer & a_Player)
 
 
 
-void cClientHandle::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
+void cClientHandle::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName)
 {
-	m_Protocol->SendPlayerListUpdateGameMode(a_Player);
+	m_Protocol->SendPlayerListUpdateDisplayName(a_Player, a_CustomName);
 }
 
 
 
 
 
-void cClientHandle::SendPlayerListUpdatePing(const cPlayer & a_Player)
+void cClientHandle::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
 {
-	m_Protocol->SendPlayerListUpdatePing(a_Player);
+	m_Protocol->SendPlayerListUpdateGameMode(a_Player);
 }
 
 
 
 
 
-void cClientHandle::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName)
+void cClientHandle::SendPlayerListUpdatePing(const cPlayer & a_Player)
 {
-	m_Protocol->SendPlayerListUpdateDisplayName(a_Player, a_CustomName);
+	m_Protocol->SendPlayerListUpdatePing(a_Player);
 }
 
 
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index f3e0e7f25..2e1e09a06 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -144,6 +144,12 @@ public:  // tolua_export
 	void SendBlockBreakAnim             (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage);
 	void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);  // tolua_export
 	void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes);
+	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);  // tolua_export
+	void SendBossBarUpdateFlags         (UInt32 a_UniqueID, bool a_DarkenSky, bool a_PlayEndMusic, bool a_CreateFog);  // tolua_export
+	void SendBossBarUpdateStyle         (UInt32 a_UniqueID, BossBarColor a_Color, BossBarDivisionType a_DivisionType);  // tolua_export
+	void SendBossBarUpdateTitle         (UInt32 a_UniqueID, const cCompositeChat & a_Title);  // tolua_export
+	void SendBossBarRemove              (UInt32 a_UniqueID);  // tolua_export
+	void SendBossBarUpdateHealth        (UInt32 a_UniqueID, float a_FractionFilled);  // tolua_export
 	void SendCameraSetTo                (const cEntity & a_Entity);
 	void SendChat                       (const AString & a_Message, eMessageType a_ChatPrefix, const AString & a_AdditionalData = "");
 	void SendChat                       (const cCompositeChat & a_Message);
diff --git a/src/Defines.h b/src/Defines.h
index fb3231ff2..cf030bdd7 100644
--- a/src/Defines.h
+++ b/src/Defines.h
@@ -394,6 +394,35 @@ enum eMessageType
 
 
 
+
+enum class BossBarColor
+{
+	Pink,
+	Blue,
+	Red,
+	Green,
+	Yellow,
+	Purple,
+	White
+};
+
+
+
+
+
+enum class BossBarDivisionType
+{
+	None,
+	SixNotches,
+	TenNotches,
+	TwelveNotches,
+	TwentyNotches
+};
+
+
+
+
+
 /** Returns a textual representation of the click action. */
 const char * ClickActionToString(int a_ClickAction);
 
diff --git a/src/Mobs/EnderDragon.cpp b/src/Mobs/EnderDragon.cpp
index a3ba5f937..e33fb21f1 100644
--- a/src/Mobs/EnderDragon.cpp
+++ b/src/Mobs/EnderDragon.cpp
@@ -2,6 +2,8 @@
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
 #include "EnderDragon.h"
+#include "../ClientHandle.h"
+#include "../CompositeChat.h"
 
 
 
@@ -17,6 +19,21 @@ cEnderDragon::cEnderDragon(void) :
 
 
 
+bool cEnderDragon::DoTakeDamage(TakeDamageInfo & a_TDI)
+{
+	if (!Super::DoTakeDamage(a_TDI))
+	{
+		return false;
+	}
+
+	m_World->BroadcastBossBarUpdateHealth(*this, GetUniqueID(), GetHealth() / GetMaxHealth());
+	return true;
+}
+
+
+
+
+
 void cEnderDragon::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 {
 	// No drops
@@ -25,3 +42,11 @@ void cEnderDragon::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 
 
 
+
+void cEnderDragon::SpawnOn(cClientHandle & a_Client)
+{
+	Super::SpawnOn(a_Client);
+
+	// Red boss bar with no divisions that plays boss music and creates fog:
+	a_Client.SendBossBarAdd(GetUniqueID(), cCompositeChat("Ender Dragon"), GetHealth() / GetMaxHealth(), BossBarColor::Red, BossBarDivisionType::None, false, true, true);
+}
diff --git a/src/Mobs/EnderDragon.h b/src/Mobs/EnderDragon.h
index 1856d165c..ffc39218c 100644
--- a/src/Mobs/EnderDragon.h
+++ b/src/Mobs/EnderDragon.h
@@ -18,9 +18,7 @@ public:
 
 	CLASS_PROTODEF(cEnderDragon)
 
+	virtual bool DoTakeDamage(TakeDamageInfo & a_TDI) override;
 	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = nullptr) override;
+	virtual void SpawnOn(cClientHandle & a_Client) override;
 } ;
-
-
-
-
diff --git a/src/Mobs/Wither.cpp b/src/Mobs/Wither.cpp
index fc02b2971..bdbbfcadb 100644
--- a/src/Mobs/Wither.cpp
+++ b/src/Mobs/Wither.cpp
@@ -5,6 +5,8 @@
 
 #include "../World.h"
 #include "../Entities/Player.h"
+#include "../ClientHandle.h"
+#include "../CompositeChat.h"
 
 
 
@@ -48,40 +50,13 @@ bool cWither::DoTakeDamage(TakeDamageInfo & a_TDI)
 		return false;
 	}
 
-	return Super::DoTakeDamage(a_TDI);
-}
-
-
-
-
-
-void cWither::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
-{
-	Super::Tick(a_Dt, a_Chunk);
-	if (!IsTicking())
-	{
-		// The base class tick destroyed us
-		return;
-	}
-
-	if (m_WitherInvulnerableTicks > 0)
+	if (!Super::DoTakeDamage(a_TDI))
 	{
-		unsigned int NewTicks = m_WitherInvulnerableTicks - 1;
-
-		if (NewTicks == 0)
-		{
-			m_World->DoExplosionAt(7.0, GetPosX(), GetPosY(), GetPosZ(), false, esWitherBirth, this);
-		}
-
-		m_WitherInvulnerableTicks = NewTicks;
-
-		if ((NewTicks % 10) == 0)
-		{
-			Heal(10);
-		}
+		return false;
 	}
 
-	m_World->BroadcastEntityMetadata(*this);
+	m_World->BroadcastBossBarUpdateHealth(*this, GetUniqueID(), GetHealth() / GetMaxHealth());
+	return true;
 }
 
 
@@ -119,3 +94,44 @@ void cWither::KilledBy(TakeDamageInfo & a_TDI)
 
 
 
+
+void cWither::SpawnOn(cClientHandle & a_Client)
+{
+	Super::SpawnOn(a_Client);
+
+	// Purple boss bar with no divisions that darkens the sky:
+	a_Client.SendBossBarAdd(GetUniqueID(), cCompositeChat("Wither"), GetHealth() / GetMaxHealth(), BossBarColor::Purple, BossBarDivisionType::None, true, false, false);
+}
+
+
+
+
+
+void cWither::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
+{
+	Super::Tick(a_Dt, a_Chunk);
+	if (!IsTicking())
+	{
+		// The base class tick destroyed us
+		return;
+	}
+
+	if (m_WitherInvulnerableTicks > 0)
+	{
+		unsigned int NewTicks = m_WitherInvulnerableTicks - 1;
+
+		if (NewTicks == 0)
+		{
+			m_World->DoExplosionAt(7.0, GetPosX(), GetPosY(), GetPosZ(), false, esWitherBirth, this);
+		}
+
+		m_WitherInvulnerableTicks = NewTicks;
+
+		if ((NewTicks % 10) == 0)
+		{
+			Heal(10);
+		}
+	}
+
+	m_World->BroadcastEntityMetadata(*this);
+}
diff --git a/src/Mobs/Wither.h b/src/Mobs/Wither.h
index 21e6aecf8..f6afb1e6d 100644
--- a/src/Mobs/Wither.h
+++ b/src/Mobs/Wither.h
@@ -26,12 +26,12 @@ public:
 	bool IsArmored(void) const;
 
 	// cEntity overrides
-	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = nullptr) override;
 	virtual bool DoTakeDamage(TakeDamageInfo & a_TDI) override;
-	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
-	virtual void KilledBy(TakeDamageInfo & a_TDI) override;
-
+	virtual void GetDrops(cItems & a_Drops, cEntity * a_Killer = nullptr) override;
 	virtual bool IsUndead(void) override { return true; }
+	virtual void KilledBy(TakeDamageInfo & a_TDI) override;
+	virtual void SpawnOn(cClientHandle & a_Client) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 
 private:
 
@@ -39,7 +39,3 @@ private:
 	unsigned int m_WitherInvulnerableTicks;
 
 } ;
-
-
-
-
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:
 
diff --git a/src/World.h b/src/World.h
index ec114cedc..e43f481a6 100644
--- a/src/World.h
+++ b/src/World.h
@@ -179,6 +179,7 @@ public:
 	virtual void BroadcastBlockAction        (Vector3i a_BlockPos, Byte a_Byte1, Byte a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = nullptr) override;  // Exported in ManualBindings_World.cpp
 	virtual void BroadcastBlockBreakAnimation(UInt32 a_EntityID, Vector3i a_BlockPos, Int8 a_Stage, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastBlockEntity        (Vector3i a_BlockPos, const cClientHandle * a_Exclude = nullptr) override;  ///< If there is a block entity at the specified coods, sends it to all clients except a_Exclude
+	virtual void BroadcastBossBarUpdateHealth(const cEntity & a_Entity, UInt32 a_UniqueID, float a_FractionFilled) override;
 
 	// tolua_begin
 	virtual void BroadcastChat       (const AString & a_Message, const cClientHandle * a_Exclude = nullptr, eMessageType a_ChatPrefix = mtCustom) override;
@@ -209,9 +210,9 @@ public:
 	virtual void BroadcastPlayerListAddPlayer        (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastPlayerListHeaderFooter     (const cCompositeChat & a_Header, const cCompositeChat & a_Footer) override;  // tolua_export
 	virtual void BroadcastPlayerListRemovePlayer     (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) override;
+	virtual void BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastPlayerListUpdateGameMode   (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastPlayerListUpdatePing       (const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr) override;
-	virtual void BroadcastPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastRemoveEntityEffect         (const cEntity & a_Entity, int a_EffectID, const cClientHandle * a_Exclude = nullptr) override;
 	virtual void BroadcastScoreboardObjective        (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode) override;
 	virtual void BroadcastScoreUpdate                (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override;