17 files changed, 321 insertions, 23 deletions

diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index faf583fbb..30d1bdaa4 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -267,6 +267,9 @@ void cClientHandle::Authenticate(void)
 	m_Player->Initialize(World);
 	m_State = csAuthenticated;
 
+	// Query player team
+	m_Player->UpdateTeam();
+
 	cRoot::Get()->GetPluginManager()->CallHookPlayerSpawned(*m_Player);
 }
 
@@ -2105,6 +2108,33 @@ void cClientHandle::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 
 
+void cClientHandle::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	m_Protocol->SendScoreboardObjective(a_Name, a_DisplayName, a_Mode);
+}
+
+
+
+
+
+void cClientHandle::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
+{
+	m_Protocol->SendScoreUpdate(a_Objective, a_Player, a_Score, a_Mode);
+}
+
+
+
+
+
+void cClientHandle::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
+{
+	m_Protocol->SendDisplayObjective(a_Objective, a_Display);
+}
+
+
+
+
+
 void cClientHandle::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
 {
 	m_Protocol->SendSoundEffect(a_SoundName, a_SrcX, a_SrcY, a_SrcZ, a_Volume, a_Pitch);
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index 373ca9e2e..636934f6f 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -16,6 +16,7 @@
 #include "OSSupport/SocketThreads.h"
 #include "ChunkDef.h"
 #include "ByteBuffer.h"
+#include "Scoreboard.h"
 
 
 
@@ -125,6 +126,9 @@ public:
 	void SendRespawn             (void);
 	void SendExperience          (void);
 	void SendExperienceOrb       (const cExpOrb & a_ExpOrb);
+	void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode);
+	void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode);
+	void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display);
 	void 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
 	void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data);
 	void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock);
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index 285aefd25..c6b24a465 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -111,8 +111,6 @@ cPlayer::cPlayer(cClientHandle* a_Client, const AString & a_PlayerName)
 	m_LastJumpHeight = (float)(GetPosY());
 	m_LastGroundHeight = (float)(GetPosY());
 	m_Stance = GetPosY() + 1.62;
-
-	// UpdateTeam();
 	
 	cRoot::Get()->GetServer()->PlayerCreated(this);
 }
@@ -867,10 +865,10 @@ void cPlayer::KilledBy(cEntity * a_Killer)
 		}
 	} IncrementCounter (GetName());
 
-	cScoreboard* Scoreboard = m_World->GetScoreBoard();
+	cScoreboard & Scoreboard = m_World->GetScoreBoard();
 
 	// Update scoreboard objectives
-	Scoreboard->ForEachObjectiveWith(cObjective::E_TYPE_DEATH_COUNT, IncrementCounter);
+	Scoreboard.ForEachObjectiveWith(cObjective::E_TYPE_DEATH_COUNT, IncrementCounter);
 }
 
 
@@ -977,9 +975,16 @@ void cPlayer::SetTeam(cTeam * a_Team)
 
 cTeam * cPlayer::UpdateTeam(void)
 {
-	cScoreboard * Scoreboard = m_World->GetScoreBoard();
+	if (m_World == NULL)
+	{
+		SetTeam(NULL);
+	}
+	else
+	{
+		cScoreboard & Scoreboard = m_World->GetScoreBoard();
 
-	m_Team = Scoreboard->QueryPlayerTeam(GetName());
+		SetTeam(Scoreboard.QueryPlayerTeam(GetName()));
+	}
 
 	return m_Team;
 }
diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index 3293da32c..0a213f476 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -12,6 +12,7 @@
 
 #include "../Defines.h"
 #include "../Endianness.h"
+#include "../Scoreboard.h"
 
 
 
@@ -92,6 +93,9 @@ public:
 	virtual void SendRespawn             (void) = 0;
 	virtual void SendExperience          (void) = 0;
 	virtual void SendExperienceOrb       (const cExpOrb & a_ExpOrb) = 0;
+	virtual void SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode) = 0;
+	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) = 0;
+	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display) = 0;
 	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) = 0;  // a_Src coords are Block * 8
 	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) = 0;
 	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) = 0;
diff --git a/src/Protocol/Protocol125.h b/src/Protocol/Protocol125.h
index d0e5c9428..fb08fb120 100644
--- a/src/Protocol/Protocol125.h
+++ b/src/Protocol/Protocol125.h
@@ -68,6 +68,9 @@ 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 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
 	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
 	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
@@ -82,8 +85,8 @@ public:
 	virtual void SendUpdateSign          (int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4) override;
 	virtual void SendUseBed              (const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ ) override;
 	virtual void SendWeather             (eWeather a_Weather) override;
-	virtual void SendWholeInventory      (const cWindow    & a_Window) override;
-	virtual void SendWindowClose         (const cWindow    & a_Window) override;
+	virtual void SendWholeInventory      (const cWindow & a_Window) override;
+	virtual void SendWindowClose         (const cWindow & a_Window) override;
 	virtual void SendWindowOpen          (const cWindow & a_Window) override;
 	virtual void SendWindowProperty      (const cWindow & a_Window, short a_Property, short a_Value) override;
 	
diff --git a/src/Protocol/Protocol15x.cpp b/src/Protocol/Protocol15x.cpp
index 0f1e59f10..c33aec7d5 100644
--- a/src/Protocol/Protocol15x.cpp
+++ b/src/Protocol/Protocol15x.cpp
@@ -35,8 +35,11 @@ Implements the 1.5.x protocol classes:
 
 enum
 {
-	PACKET_WINDOW_OPEN = 0x64,
-	PACKET_PARTICLE_EFFECT = 0x3F,
+	PACKET_WINDOW_OPEN          = 0x64,
+	PACKET_PARTICLE_EFFECT      = 0x3F,
+	PACKET_SCOREBOARD_OBJECTIVE = 0x3B,
+	PACKET_SCORE_UPDATE         = 0x3C,
+	PACKET_DISPLAY_OBJECTIVE    = 0x3D
 } ;
 
 
@@ -97,6 +100,53 @@ void cProtocol150::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 
 
 
+void cProtocol150::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_SCOREBOARD_OBJECTIVE);
+	WriteString(a_Name);
+	WriteString(a_DisplayName);
+	WriteByte(a_Mode);
+	Flush();
+}
+
+
+
+
+
+void cProtocol150::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_SCORE_UPDATE);
+	WriteString(a_Player);
+	WriteByte(a_Mode);
+
+	if (a_Mode != 1)
+	{
+		WriteString(a_Objective);
+		WriteInt((int) a_Score);
+	}
+
+	Flush();
+}
+
+
+
+
+
+void cProtocol150::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
+{
+	cCSLock Lock(m_CSPacket);
+	WriteByte(PACKET_DISPLAY_OBJECTIVE);
+	WriteByte((int) a_Display);
+	WriteString(a_Objective);
+	Flush();
+}
+
+
+
+
+
 int cProtocol150::ParseWindowClick(void)
 {
 	HANDLE_PACKET_READ(ReadChar,    char,  WindowID);
diff --git a/src/Protocol/Protocol15x.h b/src/Protocol/Protocol15x.h
index 0074b3a83..0d171a67c 100644
--- a/src/Protocol/Protocol15x.h
+++ b/src/Protocol/Protocol15x.h
@@ -30,6 +30,9 @@ public:
 	
 	virtual void SendWindowOpen          (const cWindow & a_Window) override;
 	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 SendScoreboardObjective (const AString & a_Name, const AString & a_DisplayName, Byte a_Mode) override;
+	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override;
+	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display) override;
 
 	virtual int ParseWindowClick(void);
 } ;
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 5b3a79555..d5ed1a0aa 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -705,6 +705,46 @@ void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 
 
+void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	cPacketizer Pkt(*this, 0x3b);
+	Pkt.WriteString(a_Name);
+	Pkt.WriteString(a_DisplayName);
+	Pkt.WriteByte(a_Mode);
+}
+
+
+
+
+
+void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
+{
+	cPacketizer Pkt(*this, 0x3c);
+	Pkt.WriteString(a_Player);
+	Pkt.WriteByte(a_Mode);
+
+	if (a_Mode != 1)
+	{
+		Pkt.WriteString(a_Objective);
+		Pkt.WriteInt((int) a_Score);
+	}
+}
+
+
+
+
+
+void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
+{
+	cPacketizer Pkt(*this, 0x3d);
+	Pkt.WriteByte((int) a_Display);
+	Pkt.WriteString(a_Objective);
+}
+
+
+
+
+
 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
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index 07dba834b..bbbf820a6 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -92,6 +92,9 @@ public:
 	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
 	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;
+	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override;
+	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display) override;
 	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
 	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
 	virtual void SendSpawnMob            (const cMonster & a_Mob) override;
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index a21f4f042..04db2a995 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -526,6 +526,36 @@ void cProtocolRecognizer::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 
 
+void cProtocolRecognizer::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendScoreboardObjective(a_Name, a_DisplayName, a_Mode);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendScoreUpdate(a_Objective, a_Player, a_Score, a_Mode);
+}
+
+
+
+
+
+void cProtocolRecognizer::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendDisplayObjective(a_Objective, a_Display);
+}
+
+
+
+
+
 void cProtocolRecognizer::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
 {
 	ASSERT(m_Protocol != NULL);
@@ -797,7 +827,7 @@ bool cProtocolRecognizer::TryRecognizeLengthlessProtocol(void)
 	}
 	switch (ch)
 	{
-	 case PROTO_VERSION_1_3_2:
+		case PROTO_VERSION_1_3_2:
 		{
 			m_Protocol = new cProtocol132(m_Client);
 			return true;
diff --git a/src/Protocol/ProtocolRecognizer.h b/src/Protocol/ProtocolRecognizer.h
index e94f4cde8..0b811f4c6 100644
--- a/src/Protocol/ProtocolRecognizer.h
+++ b/src/Protocol/ProtocolRecognizer.h
@@ -103,6 +103,9 @@ 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;
+	virtual void SendScoreUpdate         (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode) override;
+	virtual void SendDisplayObjective    (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display) override;
 	virtual void SendSoundEffect         (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch) override;
 	virtual void SendSoundParticleEffect (int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data) override;
 	virtual void SendSpawnFallingBlock   (const cFallingBlock & a_FallingBlock) override;
diff --git a/src/Scoreboard.cpp b/src/Scoreboard.cpp
index 3ddf146a6..7fa1eab99 100644
--- a/src/Scoreboard.cpp
+++ b/src/Scoreboard.cpp
@@ -6,6 +6,7 @@
 #include "Globals.h"
 
 #include "Scoreboard.h"
+#include "World.h"
 
 
 
@@ -72,11 +73,13 @@ cObjective::eType cObjective::StringToType(const AString & a_Name)
 
 
 
-cObjective::cObjective(const AString & a_Name, const AString & a_DisplayName, cObjective::eType a_Type)
+cObjective::cObjective(const AString & a_Name, const AString & a_DisplayName, cObjective::eType a_Type, cWorld * a_World)
 	: m_DisplayName(a_DisplayName)
 	, m_Name(a_Name)
 	, m_Type(a_Type)
-{}
+	, m_World(a_World)
+{
+}
 
 
 
@@ -84,6 +87,11 @@ cObjective::cObjective(const AString & a_Name, const AString & a_DisplayName, cO
 
 void cObjective::Reset(void)
 {
+	for (cScoreMap::iterator it = m_Scores.begin(); it != m_Scores.end(); ++it)
+	{
+		m_World->BroadcastScoreUpdate(m_Name, it->first, 0, 1);
+	}
+
 	m_Scores.clear();
 }
 
@@ -112,6 +120,8 @@ cObjective::Score cObjective::GetScore(const AString & a_Name) const
 void cObjective::SetScore(const AString & a_Name, cObjective::Score a_Score)
 {
 	m_Scores[a_Name] = a_Score;
+
+	m_World->BroadcastScoreUpdate(m_Name, a_Name, a_Score, 0);
 }
 
 
@@ -121,6 +131,8 @@ void cObjective::SetScore(const AString & a_Name, cObjective::Score a_Score)
 void cObjective::ResetScore(const AString & a_Name)
 {
 	m_Scores.erase(a_Name);
+
+	m_World->BroadcastScoreUpdate(m_Name, a_Name, 0, 1);
 }
 
 
@@ -132,7 +144,7 @@ cObjective::Score cObjective::AddScore(const AString & a_Name, cObjective::Score
 	// TODO 2014-01-19 xdot: Potential optimization - Reuse iterator
 	Score NewScore = m_Scores[a_Name] + a_Delta;
 
-	m_Scores[a_Name] = NewScore;
+	SetScore(a_Name, NewScore);
 
 	return NewScore;
 }
@@ -146,7 +158,7 @@ cObjective::Score cObjective::SubScore(const AString & a_Name, cObjective::Score
 	// TODO 2014-01-19 xdot: Potential optimization - Reuse iterator
 	Score NewScore = m_Scores[a_Name] - a_Delta;
 
-	m_Scores[a_Name] = NewScore;
+	SetScore(a_Name, NewScore);
 
 	return NewScore;
 }
@@ -155,6 +167,17 @@ cObjective::Score cObjective::SubScore(const AString & a_Name, cObjective::Score
 
 
 
+void cObjective::SetDisplayName(const AString & a_Name)
+{
+	m_DisplayName = a_Name;
+
+	m_World->BroadcastScoreboardObjective(m_Name, m_DisplayName, 2);
+}
+
+
+
+
+
 cTeam::cTeam(const AString & a_Name, const AString & a_DisplayName,
 	     const AString & a_Prefix, const AString & a_Suffix)
 	: m_AllowsFriendlyFire(true)
@@ -215,7 +238,7 @@ unsigned int cTeam::GetNumPlayers(void) const
 
 
 
-cScoreboard::cScoreboard()
+cScoreboard::cScoreboard(cWorld * a_World) : m_World(a_World)
 {
 	for (int i = 0; i < (int) E_DISPLAY_SLOT_COUNT; ++i)
 	{
@@ -229,11 +252,21 @@ cScoreboard::cScoreboard()
 
 cObjective* cScoreboard::RegisterObjective(const AString & a_Name, const AString & a_DisplayName, cObjective::eType a_Type)
 {
-	cObjective Objective(a_Name, a_DisplayName, a_Type);
+	cObjective Objective(a_Name, a_DisplayName, a_Type, m_World);
 
 	std::pair<cObjectiveMap::iterator, bool> Status = m_Objectives.insert(cNamedObjective(a_Name, Objective));
 
-	return Status.second ? &Status.first->second : NULL;
+	if (Status.second)
+	{
+		ASSERT(m_World != NULL);
+		m_World->BroadcastScoreboardObjective(a_Name, a_DisplayName, 0);
+
+		return &Status.first->second;
+	}
+	else
+	{
+		return NULL;
+	}
 }
 
 
@@ -242,6 +275,8 @@ cObjective* cScoreboard::RegisterObjective(const AString & a_Name, const AString
 
 bool cScoreboard::RemoveObjective(const AString & a_Name)
 {
+	cCSLock Lock(m_CSObjectives);
+
 	cObjectiveMap::iterator it = m_Objectives.find(a_Name);
 
 	if (it == m_Objectives.end())
@@ -251,6 +286,9 @@ bool cScoreboard::RemoveObjective(const AString & a_Name)
 
 	m_Objectives.erase(it);
 
+	ASSERT(m_World != NULL);
+	m_World->BroadcastScoreboardObjective(it->second.GetName(), it->second.GetDisplayName(), 1);
+
 	return true;
 }
 
@@ -260,6 +298,8 @@ bool cScoreboard::RemoveObjective(const AString & a_Name)
 
 cObjective * cScoreboard::GetObjective(const AString & a_Name)
 {
+	cCSLock Lock(m_CSObjectives);
+
 	cObjectiveMap::iterator it = m_Objectives.find(a_Name);
 
 	if (it == m_Objectives.end())
@@ -294,6 +334,8 @@ cTeam * cScoreboard::RegisterTeam(
 
 bool cScoreboard::RemoveTeam(const AString & a_Name)
 {
+	cCSLock Lock(m_CSTeams);
+
 	cTeamMap::iterator it = m_Teams.find(a_Name);
 
 	if (it == m_Teams.end())
@@ -312,6 +354,8 @@ bool cScoreboard::RemoveTeam(const AString & a_Name)
 
 cTeam * cScoreboard::GetTeam(const AString & a_Name)
 {
+	cCSLock Lock(m_CSTeams);
+
 	cTeamMap::iterator it = m_Teams.find(a_Name);
 
 	if (it == m_Teams.end())
@@ -330,6 +374,8 @@ cTeam * cScoreboard::GetTeam(const AString & a_Name)
 
 cTeam * cScoreboard::QueryPlayerTeam(const AString & a_Name)
 {
+	cCSLock Lock(m_CSTeams);
+
 	for (cTeamMap::iterator it = m_Teams.begin(); it != m_Teams.end(); ++it)
 	{
 		if (it->second.HasPlayer(a_Name))
@@ -352,6 +398,10 @@ void cScoreboard::SetDisplay(const AString & a_Objective, eDisplaySlot a_Slot)
 	cObjective * Objective = GetObjective(a_Objective);
 
 	m_Display[a_Slot] = Objective;
+
+	ASSERT(m_World != NULL);
+	m_World->BroadcastDisplayObjective(Objective ? a_Objective : "", a_Slot);
+	
 }
 
 
@@ -371,6 +421,8 @@ cObjective * cScoreboard::GetObjectiveIn(eDisplaySlot a_Slot)
 
 void cScoreboard::ForEachObjectiveWith(cObjective::eType a_Type, cObjectiveCallback& a_Callback)
 {
+	cCSLock Lock(m_CSObjectives);
+
 	for (cObjectiveMap::iterator it = m_Objectives.begin(); it != m_Objectives.end(); ++it)
 	{
 		if (it->second.GetType() == a_Type)
diff --git a/src/Scoreboard.h b/src/Scoreboard.h
index 2ce614de7..b92642a9a 100644
--- a/src/Scoreboard.h
+++ b/src/Scoreboard.h
@@ -14,6 +14,7 @@
 
 
 class cObjective;
+class cWorld;
 
 typedef cItemCallback<cObjective> cObjectiveCallback;
 
@@ -54,7 +55,7 @@ public:
 
 public:
 
-	cObjective(const AString & a_Name, const AString & a_DisplayName, eType a_Type);
+	cObjective(const AString & a_Name, const AString & a_DisplayName, eType a_Type, cWorld * a_World);
 
 	eType GetType(void) const { return m_Type; }
 
@@ -79,6 +80,8 @@ public:
 	/// Subtracts a_Delta and returns the new score
 	Score SubScore(const AString & a_Name, Score a_Delta);
 
+	void SetDisplayName(const AString & a_Name);
+
 private:
 
 	typedef std::pair<AString, Score> cTrackedPlayer;
@@ -92,6 +95,8 @@ private:
 
 	eType m_Type;
 
+	cWorld * m_World;
+
 	friend class cScoreboardSerializer;
 
 };
@@ -180,7 +185,7 @@ public:
 
 public:
 
-	cScoreboard();
+	cScoreboard(cWorld * a_World);
 
 	/// Registers a new scoreboard objective, returns the cObjective instance, NULL on name collision
 	cObjective * RegisterObjective(const AString & a_Name, const AString & a_DisplayName, cObjective::eType a_Type);
@@ -223,10 +228,14 @@ private:
 	typedef std::map<AString, cTeam>      cTeamMap;
 
 	// TODO 2014-01-19 xdot: Potential optimization - Sort objectives based on type
+	cCriticalSection m_CSObjectives;
 	cObjectiveMap m_Objectives;
 
+	cCriticalSection m_CSTeams;
 	cTeamMap m_Teams;
 
+	cWorld * m_World;
+
 	cObjective* m_Display[E_DISPLAY_SLOT_COUNT];
 
 	friend class cScoreboardSerializer;
diff --git a/src/Server.cpp b/src/Server.cpp
index 5280270b9..eb76fcaeb 100644
--- a/src/Server.cpp
+++ b/src/Server.cpp
@@ -501,7 +501,7 @@ void cServer::ExecuteConsoleCommand(const AString & a_Cmd, cCommandOutputCallbac
 		}
 	}
 	#endif
-	
+
 	if (cPluginManager::Get()->ExecuteConsoleCommand(split, a_Output))
 	{
 		a_Output.Finished();
diff --git a/src/World.cpp b/src/World.cpp
index 8e7b6171c..fb20e2242 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -242,7 +242,8 @@ cWorld::cWorld(const AString & a_WorldName) :
 	m_Weather(eWeather_Sunny),
 	m_WeatherInterval(24000),  // Guaranteed 1 day of sunshine at server start :)
 	m_GeneratorCallbacks(*this),
-	m_TickThread(*this)
+	m_TickThread(*this),
+	m_Scoreboard(this)
 {
 	LOGD("cWorld::cWorld(\"%s\")", a_WorldName.c_str());
 
@@ -1982,6 +1983,60 @@ void cWorld::BroadcastRemoveEntityEffect(const cEntity & a_Entity, int a_EffectI
 
 
 
+void cWorld::BroadcastScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	cCSLock Lock(m_CSPlayers);
+	for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
+	{
+		cClientHandle * ch = (*itr)->GetClientHandle();
+		if ((ch == NULL) || !ch->IsLoggedIn() || ch->IsDestroyed())
+		{
+			continue;
+		}
+		ch->SendScoreboardObjective(a_Name, a_DisplayName, a_Mode);
+	}
+}
+
+
+
+
+
+void cWorld::BroadcastScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
+{
+	cCSLock Lock(m_CSPlayers);
+	for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
+	{
+		cClientHandle * ch = (*itr)->GetClientHandle();
+		if ((ch == NULL) || !ch->IsLoggedIn() || ch->IsDestroyed())
+		{
+			continue;
+		}
+		ch->SendScoreUpdate(a_Objective, a_Player, a_Score, a_Mode);
+	}
+}
+
+
+
+
+
+void cWorld::BroadcastDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
+{
+	cCSLock Lock(m_CSPlayers);
+	for (cPlayerList::iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)
+	{
+		cClientHandle * ch = (*itr)->GetClientHandle();
+		if ((ch == NULL) || !ch->IsLoggedIn() || ch->IsDestroyed())
+		{
+			continue;
+		}
+		ch->SendDisplayObjective(a_Objective, a_Display);
+	}
+}
+
+
+
+
+
 void cWorld::BroadcastSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch, const cClientHandle * a_Exclude)
 {
 	m_ChunkMap->BroadcastSoundEffect(a_SoundName, a_SrcX, a_SrcY, a_SrcZ, a_Volume, a_Pitch, a_Exclude);
diff --git a/src/World.h b/src/World.h
index 1dcbac8e4..51c3af8cb 100644
--- a/src/World.h
+++ b/src/World.h
@@ -179,6 +179,9 @@ public:
 	void BroadcastParticleEffect     (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, cClientHandle * a_Exclude = NULL);
 	void BroadcastPlayerListItem     (const cPlayer & a_Player, bool a_IsOnline, const cClientHandle * a_Exclude = NULL);
 	void BroadcastRemoveEntityEffect (const cEntity & a_Entity, int a_EffectID, const cClientHandle * a_Exclude = NULL);
+	void BroadcastScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode);
+	void BroadcastScoreUpdate        (const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode);
+	void BroadcastDisplayObjective   (const AString & a_Objective, cScoreboard::eDisplaySlot a_Display);
 	void BroadcastSoundEffect        (const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch, const cClientHandle * a_Exclude = NULL);   // tolua_export a_Src coords are Block * 8
 	void BroadcastSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data, const cClientHandle * a_Exclude = NULL); // tolua_export
 	void BroadcastSpawnEntity        (cEntity & a_Entity, const cClientHandle * a_Exclude = NULL);
@@ -516,7 +519,7 @@ public:
 	const AString & GetIniFileName(void) const {return m_IniFileName; }
 
 	/// Returns the associated scoreboard instance
-	cScoreboard* GetScoreBoard(void) { return &m_Scoreboard; }
+	cScoreboard & GetScoreBoard(void) { return m_Scoreboard; }
 	
 	// tolua_end
 
diff --git a/src/WorldStorage/ScoreboardSerializer.h b/src/WorldStorage/ScoreboardSerializer.h
index 2a4e0767e..048fa3ab4 100644
--- a/src/WorldStorage/ScoreboardSerializer.h
+++ b/src/WorldStorage/ScoreboardSerializer.h
@@ -24,6 +24,7 @@ class cScoreboard;
 class cScoreboardSerializer
 {
 public:
+
 	cScoreboardSerializer(const AString & a_WorldName, cScoreboard* a_ScoreBoard);
 
 	/// Try to load the scoreboard
@@ -32,6 +33,7 @@ public:
 	/// Try to save the scoreboard
 	bool Save(void);
 
+
 private:
 
 	void SaveScoreboardToNBT(cFastNBTWriter & a_Writer);
@@ -41,6 +43,8 @@ private:
 	cScoreboard* m_ScoreBoard;
 
 	AString m_Path;
+
+
 } ;