46 files changed, 2166 insertions, 811 deletions

diff --git a/SetFlags.cmake b/SetFlags.cmake
index c5a3a0697..6c974ea94 100644
--- a/SetFlags.cmake
+++ b/SetFlags.cmake
@@ -46,6 +46,10 @@ macro(set_flags)
 			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++11")
 			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
 		else()
+			set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         -std=c++0x")
+			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++0x")
+			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++0x")
+
 			add_flags_cxx("-pthread")
 		endif()
 
@@ -56,6 +60,10 @@ macro(set_flags)
 			set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         -std=c++11")
 			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++11")
 			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
+		else()
+			set(CMAKE_CXX_FLAGS         "${CMAKE_CXX_FLAGS}         -std=c++0x")
+			set(CMAKE_CXX_FLAGS_DEBUG   "${CMAKE_CXX_FLAGS_DEBUG}   -std=c++0x")
+			set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++0x")
 		endif()
 
 		# We use a signed char (fixes #640 on RasPi)
diff --git a/Tools/ProtoProxy/Connection.cpp b/Tools/ProtoProxy/Connection.cpp
index 8dc82157a..b21d2ae59 100644
--- a/Tools/ProtoProxy/Connection.cpp
+++ b/Tools/ProtoProxy/Connection.cpp
@@ -2197,32 +2197,38 @@ bool cConnection::HandleServerSpawnMob(void)
 
 
 
+struct sSpawnData
+{
+	AString m_Name;
+	AString m_Value;
+	AString m_Signature;
+	sSpawnData(const AString & a_Name, const AString & a_Value, const AString & a_Signature) :
+		m_Name(a_Name),
+		m_Value(a_Value),
+		m_Signature(a_Signature)
+	{
+	}
+};
+
+typedef std::vector<sSpawnData> sSpawnDatas;
+
+
+
+
+
 bool cConnection::HandleServerSpawnNamedEntity(void)
 {
 	HANDLE_SERVER_PACKET_READ(ReadVarInt,        UInt32,  EntityID);
 	HANDLE_SERVER_PACKET_READ(ReadVarUTF8String, AString, EntityUUID);
 	HANDLE_SERVER_PACKET_READ(ReadVarUTF8String, AString, EntityName);
 	HANDLE_SERVER_PACKET_READ(ReadVarInt,        UInt32,  DataCount);
-	struct sData
-	{
-		AString m_Name;
-		AString m_Value;
-		AString m_Signature;
-		sData(const AString & a_Name, const AString & a_Value, const AString & a_Signature) :
-			m_Name(a_Name),
-			m_Value(a_Value),
-			m_Signature(a_Signature)
-		{
-		}
-	};
-	typedef std::vector<sData> sDataVec;
-	sDataVec Data;
+	sSpawnDatas Data;
 	for (UInt32 i = 0; i < DataCount; i++)
 	{
 		HANDLE_SERVER_PACKET_READ(ReadVarUTF8String, AString, Name)
 		HANDLE_SERVER_PACKET_READ(ReadVarUTF8String, AString, Value)
 		HANDLE_SERVER_PACKET_READ(ReadVarUTF8String, AString, Signature)
-		Data.push_back(sData(Name, Value, Signature));
+		Data.push_back(sSpawnData(Name, Value, Signature));
 	}
 	HANDLE_SERVER_PACKET_READ(ReadBEInt,         int,     PosX);
 	HANDLE_SERVER_PACKET_READ(ReadBEInt,         int,     PosY);
@@ -2242,7 +2248,7 @@ bool cConnection::HandleServerSpawnNamedEntity(void)
 	Log("  UUID = \"%s\"", EntityUUID.c_str());
 	Log("  Name = \"%s\"", EntityName.c_str());
 	Log("  NumData = %u", DataCount);
-	for (sDataVec::const_iterator itr = Data.begin(), end = Data.end(); itr != end; ++itr)
+	for (sSpawnDatas::const_iterator itr = Data.begin(), end = Data.end(); itr != end; ++itr)
 	{
 		Log("    Name = \"%s\", Value = \"%s\", Signature = \"%s\"",
 			itr->m_Name.c_str(), itr->m_Value.c_str(), itr->m_Signature.c_str()
diff --git a/lib/inifile/iniFile.cpp b/lib/inifile/iniFile.cpp
index cf8b63987..19db9723a 100644
--- a/lib/inifile/iniFile.cpp
+++ b/lib/inifile/iniFile.cpp
@@ -154,7 +154,7 @@ bool cIniFile::ReadFile(const AString & a_FileName, bool a_AllowExampleRedirect)
 			case ';':
 			case '#':
 			{
-				if (names.size() == 0)
+				if (names.empty())
 				{
 					AddHeaderComment(line.substr(pLeft + 1));
 				}
@@ -168,8 +168,9 @@ bool cIniFile::ReadFile(const AString & a_FileName, bool a_AllowExampleRedirect)
 	}  // while (getline())
 
 	f.close();
-	if (names.size() == 0)
+	if (keys.empty() && names.empty() && comments.empty())
 	{
+		// File be empty or unreadable, equivalent to nonexistant
 		return false;
 	}
 
diff --git a/src/Authenticator.cpp b/src/Authenticator.cpp
deleted file mode 100644
index ff5ad9506..000000000
--- a/src/Authenticator.cpp
+++ /dev/null
@@ -1,268 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-#include "Authenticator.h"
-#include "OSSupport/BlockingTCPLink.h"
-#include "Root.h"
-#include "Server.h"
-
-#include "inifile/iniFile.h"
-
-#include <sstream>
-
-
-
-
-
-#define DEFAULT_AUTH_SERVER "session.minecraft.net"
-#define DEFAULT_AUTH_ADDRESS "/game/checkserver.jsp?user=%USERNAME%&serverId=%SERVERID%"
-#define MAX_REDIRECTS 10
-
-
-
-
-
-cAuthenticator::cAuthenticator(void) :
-	super("cAuthenticator"),
-	m_Server(DEFAULT_AUTH_SERVER),
-	m_Address(DEFAULT_AUTH_ADDRESS),
-	m_ShouldAuthenticate(true)
-{
-}
-
-
-
-
-
-cAuthenticator::~cAuthenticator()
-{
-	Stop();
-}
-
-
-
-
-
-void cAuthenticator::ReadINI(cIniFile & IniFile)
-{
-	m_Server  = IniFile.GetValueSet("Authentication", "Server", DEFAULT_AUTH_SERVER);
-	m_Address = IniFile.GetValueSet("Authentication", "Address", DEFAULT_AUTH_ADDRESS);
-	m_ShouldAuthenticate = IniFile.GetValueSetB("Authentication", "Authenticate", true);
-}
-
-
-
-
-
-void cAuthenticator::Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash)
-{
-	if (!m_ShouldAuthenticate)
-	{
-		cRoot::Get()->AuthenticateUser(a_ClientID);
-		return;
-	}
-
-	cCSLock Lock(m_CS);
-	m_Queue.push_back(cUser(a_ClientID, a_UserName, a_ServerHash));
-	m_QueueNonempty.Set();
-}
-
-
-
-
-
-void cAuthenticator::Start(cIniFile & IniFile)
-{
-	ReadINI(IniFile);
-	m_ShouldTerminate = false;
-	super::Start();
-}
-
-
-
-
-
-void cAuthenticator::Stop(void)
-{
-	m_ShouldTerminate = true;
-	m_QueueNonempty.Set();
-	Wait();
-}
-
-
-
-
-
-void cAuthenticator::Execute(void)
-{
-	for (;;)
-	{
-		cCSLock Lock(m_CS);
-		while (!m_ShouldTerminate && (m_Queue.size() == 0))
-		{
-			cCSUnlock Unlock(Lock);
-			m_QueueNonempty.Wait();
-		}
-		if (m_ShouldTerminate)
-		{
-			return;
-		}
-		ASSERT(!m_Queue.empty());
-		
-		cAuthenticator::cUser & User = m_Queue.front();
-		int ClientID = User.m_ClientID;
-		AString UserName = User.m_Name;
-		AString ActualAddress = m_Address;
-		ReplaceString(ActualAddress, "%USERNAME%", UserName);
-		ReplaceString(ActualAddress, "%SERVERID%", User.m_ServerID);
-		m_Queue.pop_front();
-		Lock.Unlock();
-
-		if (!AuthFromAddress(m_Server, ActualAddress, UserName))
-		{
-			cRoot::Get()->KickUser(ClientID, "Failed to authenticate account!");
-		}
-		else
-		{
-			cRoot::Get()->AuthenticateUser(ClientID);
-		}
-	}  // for (-ever)
-}
-
-
-
-
-
-bool cAuthenticator::AuthFromAddress(const AString & a_Server, const AString & a_Address, const AString & a_UserName, int a_Level /* = 1 */)
-{
-	// Returns true if the user authenticated okay, false on error; iLevel is the recursion deptht (bails out if too deep)
-
-	cBlockingTCPLink Link;
-	if (!Link.Connect(a_Server.c_str(), 80))
-	{
-		LOGWARNING("%s: cannot connect to auth server \"%s\", kicking user \"%s\"",
-			__FUNCTION__, a_Server.c_str(), a_UserName.c_str()
-		);
-		return false;
-	}
-	
-	Link.SendMessage( AString( "GET " + a_Address + " HTTP/1.1\r\n" ).c_str());
-	Link.SendMessage( AString( "User-Agent: MCServer\r\n" ).c_str());
-	Link.SendMessage( AString( "Host: " + a_Server + "\r\n" ).c_str());
-	//Link.SendMessage( AString( "Host: session.minecraft.net\r\n" ).c_str());
-	Link.SendMessage( AString( "Accept: */*\r\n" ).c_str());
-	Link.SendMessage( AString( "Connection: close\r\n" ).c_str());	//Close so we donīt have to mess with the Content-Length :)
-	Link.SendMessage( AString( "\r\n" ).c_str());
-	AString DataRecvd;
-	Link.ReceiveData(DataRecvd);
-	Link.CloseSocket();
-
-	std::stringstream ss(DataRecvd);
-
-	// Parse the data received:
-	std::string temp;
-	ss >> temp;
-	bool bRedirect = false;
-	bool bOK = false;
-	if ((temp.compare("HTTP/1.1") == 0) || (temp.compare("HTTP/1.0") == 0))
-	{
-		int code;
-		ss >> code;
-		if (code == 302)
-		{
-			// redirect blabla
-			LOGD("%s: Need to redirect, current level %d!", __FUNCTION__, a_Level);
-			if (a_Level > MAX_REDIRECTS)
-			{
-				LOGERROR("cAuthenticator: received too many levels of redirection from auth server \"%s\" for user \"%s\", bailing out and kicking the user", a_Server.c_str(), a_UserName.c_str());
-				return false;
-			}
-			bRedirect = true;
-		}
-		else if (code == 200)
-		{
-			LOGD("cAuthenticator: Received status 200 OK! :D");
-			bOK = true;
-		}
-	}
-	else
-	{
-		LOGERROR("cAuthenticator: cannot parse auth reply from server \"%s\" for user \"%s\", kicking the user.", a_Server.c_str(), a_UserName.c_str());
-		return false;
-	}
-
-	if( bRedirect )
-	{
-		AString Location;
-		// Search for "Location:"
-		bool bFoundLocation = false;
-		while( !bFoundLocation && ss.good() )
-		{
-			char c = 0;
-			while( c != '\n' )
-			{
-				ss.get( c );
-			}
-			AString Name;
-			ss >> Name;
-			if (Name.compare("Location:") == 0)
-			{
-				bFoundLocation = true;
-				ss >> Location;
-			}
-		}
-		if (!bFoundLocation)
-		{
-			LOGERROR("cAuthenticator: received invalid redirection from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
-			return false;
-		}
-
-		Location = Location.substr(strlen("http://"), std::string::npos); // Strip http://
-		std::string Server = Location.substr( 0, Location.find( "/" ) ); // Only leave server address
-		Location = Location.substr( Server.length(), std::string::npos);
-		return AuthFromAddress(Server, Location, a_UserName, a_Level + 1);
-	}
-
-	if (!bOK)
-	{
-		LOGERROR("cAuthenticator: received an error from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
-		return false;
-	}
-
-	// Header says OK, so receive the rest.
-	// Go past header, double \n means end of headers
-	char c = 0;
-	while (ss.good())
-	{
-		while (c != '\n')
-		{
-			ss.get(c);
-		}
-		ss.get(c);
-		if( c == '\n' || c == '\r' || ss.peek() == '\r' || ss.peek() == '\n' )
-			break;
-	}
-	if (!ss.good())
-	{
-		LOGERROR("cAuthenticator: error while parsing response body from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
-		return false;
-	}
-
-	std::string Result;
-	ss >> Result;
-	LOGD("cAuthenticator: Authentication result was %s", Result.c_str());
-
-	if (Result.compare("YES") == 0)	//Works well
-	{
-		LOGINFO("Authentication result \"YES\", player authentication success!");
-		return true;
-	}
-
-
-	LOGINFO("Authentication result was \"%s\", player authentication failure!", Result.c_str());
-	return false;
-}
-
-
-
-
diff --git a/src/BlockID.h b/src/BlockID.h
index 2fec512e2..a227245aa 100644
--- a/src/BlockID.h
+++ b/src/BlockID.h
@@ -503,6 +503,10 @@ enum
 	E_META_PLANKS_CONIFER = 1,
 	E_META_PLANKS_BIRCH   = 2,
 	E_META_PLANKS_JUNGLE  = 3,
+
+	// E_BLOCK_(XXX_WEIGHTED)_PRESSURE_PLATE metas:
+	E_META_PRESSURE_PLATE_RAISED = 0,
+	E_META_PRESSURE_PLATE_DEPRESSED = 1,
 	
 	// E_BLOCK_QUARTZ_BLOCK metas:
 	E_META_QUARTZ_NORMAL = 0,
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index c0df49827..a61d26503 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -24,13 +24,15 @@
 
 #include "Root.h"
 
-#include "Authenticator.h"
+#include "Protocol/Authenticator.h"
 #include "MersenneTwister.h"
 
 #include "Protocol/ProtocolRecognizer.h"
 #include "CompositeChat.h"
 #include "Items/ItemSword.h"
 
+#include "md5/md5.h"
+
 
 
 /** Maximum number of explosions to send this tick, server will start dropping if exceeded */
@@ -175,6 +177,39 @@ void cClientHandle::Destroy(void)
 
 
 
+void cClientHandle::GenerateOfflineUUID(void)
+{
+	m_UUID = GenerateOfflineUUID(m_Username);
+}
+
+
+
+
+
+AString cClientHandle::GenerateOfflineUUID(const AString & a_Username)
+{
+	// Proper format for a version 3 UUID is:
+	// xxxxxxxx-xxxx-3xxx-yxxx-xxxxxxxxxxxx where x is any hexadecimal digit and y is one of 8, 9, A, or B
+	
+	// Generate an md5 checksum, and use it as base for the ID:
+	MD5 Checksum(a_Username);
+	AString UUID = Checksum.hexdigest();
+	UUID[12] = '3';  // Version 3 UUID
+	UUID[16] = '8';  // Variant 1 UUID
+	
+	// Now the digest doesn't have the UUID slashes, but the client requires them, so add them into the appropriate positions:
+	UUID.insert(8, "-");
+	UUID.insert(13, "-");
+	UUID.insert(18, "-");
+	UUID.insert(23, "-");
+	
+	return UUID;
+}
+
+
+
+
+
 void cClientHandle::Kick(const AString & a_Reason)
 {
 	if (m_State >= csAuthenticating)  // Don't log pings
@@ -188,7 +223,7 @@ void cClientHandle::Kick(const AString & a_Reason)
 
 
 
-void cClientHandle::Authenticate(void)
+void cClientHandle::Authenticate(const AString & a_Name, const AString & a_UUID)
 {
 	if (m_State != csAuthenticating)
 	{
@@ -197,6 +232,12 @@ void cClientHandle::Authenticate(void)
 	
 	ASSERT( m_Player == NULL );
 
+	m_Username = a_Name;
+	m_UUID = a_UUID;
+	
+	// Send login success (if the protocol supports it):
+	m_Protocol->SendLoginSuccess();
+
 	// Spawn player (only serversided, so data is loaded)
 	m_Player = new cPlayer(this, GetUsername());
 
@@ -1679,13 +1720,16 @@ void cClientHandle::Tick(float a_Dt)
 	}
 
 	// Send a ping packet:
-	cTimer t1;
-	if (m_LastPingTime + cClientHandle::PING_TIME_MS <= t1.GetNowTime())
+	if (m_State == csPlaying)
 	{
-		m_PingID++;
-		m_PingStartTime = t1.GetNowTime();
-		m_Protocol->SendKeepAlive(m_PingID);
-		m_LastPingTime = m_PingStartTime;
+		cTimer t1;
+		if ((m_LastPingTime + cClientHandle::PING_TIME_MS <= t1.GetNowTime()))
+		{
+			m_PingID++;
+			m_PingStartTime = t1.GetNowTime();
+			m_Protocol->SendKeepAlive(m_PingID);
+			m_LastPingTime = m_PingStartTime;
+		}
 	}
 
 	// Handle block break animation:
@@ -2103,7 +2147,7 @@ void cClientHandle::SendExplosion(double a_BlockX, double a_BlockY, double a_Blo
 	}
 	
 	// Update the statistics:
-	m_NumExplosionsThisTick += 1;
+	m_NumExplosionsThisTick++;
 	
 	m_Protocol->SendExplosion(a_BlockX, a_BlockY, a_BlockZ, a_Radius, a_BlocksAffected, a_PlayerMotion);
 }
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index 0c367ec7d..12e0256de 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -62,8 +62,22 @@ public:
 	
 	cPlayer* GetPlayer() { return m_Player; }	// tolua_export
 
+	const AString & GetUUID(void) const { return m_UUID; } // tolua_export
+	void SetUUID(const AString & a_UUID) { m_UUID = a_UUID; }
+	
+	/** Generates an UUID based on the username stored for this client, and stores it in the m_UUID member.
+	This is used for the offline (non-auth) mode, when there's no UUID source.
+	Each username generates a unique and constant UUID, so that when the player reconnects with the same name, their UUID is the same.
+	Internally calls the GenerateOfflineUUID static function. */
+	void GenerateOfflineUUID(void);
+	
+	/** Generates an UUID based on the player name provided.
+	This is used for the offline (non-auth) mode, when there's no UUID source.
+	Each username generates a unique and constant UUID, so that when the player reconnects with the same name, their UUID is the same. */
+	static AString GenerateOfflineUUID(const AString & a_Username);  // tolua_export
+
 	void Kick(const AString & a_Reason);		// tolua_export
-	void Authenticate(void);  // Called by cAuthenticator when the user passes authentication
+	void Authenticate(const AString & a_Name, const AString & a_UUID);  // Called by cAuthenticator when the user passes authentication
 
 	void StreamChunks(void);
 	
@@ -326,6 +340,7 @@ private:
 	
 	static int s_ClientCount;
 	int m_UniqueID;
+	AString m_UUID;
 	
 	/** Set to true when the chunk where the player is is sent to the client. Used for spawning the player */
 	bool m_HasSentPlayerChunk;
diff --git a/src/Defines.h b/src/Defines.h
index 1a8b3fa4a..9fa3b3a8e 100644
--- a/src/Defines.h
+++ b/src/Defines.h
@@ -493,15 +493,17 @@ inline void EulerToVector(double a_Pan, double a_Pitch, double & a_X, double & a
 
 inline void VectorToEuler(double a_X, double a_Y, double a_Z, double & a_Pan, double & a_Pitch)
 {
-	if (fabs(a_X) < std::numeric_limits<double>::epsilon())
+	double r = sqrt((a_X * a_X) + (a_Z * a_Z));
+	if (r < std::numeric_limits<double>::epsilon())
 	{
-		a_Pan = atan2(a_Z, a_X) * 180 / PI - 90;
+		a_Pan = 0;
 	}
 	else
 	{
-		a_Pan = 0;
+		a_Pan = atan2(a_Z, a_X) * 180 / PI - 90;		
 	}
-	a_Pitch = atan2(a_Y, sqrt((a_X * a_X) + (a_Z * a_Z))) * 180 / PI;
+
+	a_Pitch = atan2(a_Y, r) * 180 / PI;
 }
 
 
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 8ef45f1a5..86aee4c6f 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -330,7 +330,7 @@ void cEntity::DoTakeDamage(TakeDamageInfo & a_TDI)
 		AddSpeed(a_TDI.Knockback * 2);
 	}
 
-	m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_HURT);
+	m_World->BroadcastEntityStatus(*this, esGenericHurt);
 
 	if (m_Health <= 0)
 	{
@@ -479,7 +479,7 @@ void cEntity::KilledBy(cEntity * a_Killer)
 	GetDrops(Drops, a_Killer);
 	m_World->SpawnItemPickups(Drops, GetPosX(), GetPosY(), GetPosZ());
 
-	m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_DEAD);
+	m_World->BroadcastEntityStatus(*this, esGenericDead);
 }
 
 
@@ -519,37 +519,36 @@ void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
 	}
 	else
 	{
-		if (a_Chunk.IsValid())
+		if (!a_Chunk.IsValid())
 		{
-			cChunk * NextChunk = a_Chunk.GetNeighborChunk(POSX_TOINT, POSZ_TOINT);
+			return;
+		}
 
-			if ((NextChunk == NULL) || !NextChunk->IsValid())
-			{
-				return;
-			}
+		// Position changed -> super::Tick() called
+		GET_AND_VERIFY_CURRENT_CHUNK(NextChunk, POSX_TOINT, POSZ_TOINT)
 
-			TickBurning(*NextChunk);
+		TickBurning(*NextChunk);
 
-			if (GetPosY() < VOID_BOUNDARY)
-			{
-				TickInVoid(*NextChunk);
-			}
-			else
-			{
-				m_TicksSinceLastVoidDamage = 0;
-			}
-
-			if (IsMob() || IsPlayer())
-			{
-				// Set swimming state
-				SetSwimState(*NextChunk);
+		if (GetPosY() < VOID_BOUNDARY)
+		{
+			TickInVoid(*NextChunk);
+		}
+		else
+		{
+			m_TicksSinceLastVoidDamage = 0;
+		}
 
-				// Handle drowning
-				HandleAir();
-			}
+		if (IsMob() || IsPlayer())
+		{
+			// Set swimming state
+			SetSwimState(*NextChunk);
 
-			HandlePhysics(a_Dt, *NextChunk);
+			// Handle drowning
+			HandleAir();
 		}
+
+		// None of the above functions change position, we remain in the chunk of NextChunk
+		HandlePhysics(a_Dt, *NextChunk);
 	}
 }
 
@@ -559,34 +558,30 @@ void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
 
 void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 {
+	int BlockX = POSX_TOINT;
+	int BlockY = POSY_TOINT;
+	int BlockZ = POSZ_TOINT;
+
+	// Position changed -> super::HandlePhysics() called
+	GET_AND_VERIFY_CURRENT_CHUNK(NextChunk, BlockX, BlockZ)
+
 	// TODO Add collision detection with entities.
 	a_Dt /= 1000;  // Convert from msec to sec
-	Vector3d NextPos = Vector3d(GetPosX(),GetPosY(),GetPosZ());
-	Vector3d NextSpeed = Vector3d(GetSpeedX(),GetSpeedY(),GetSpeedZ());
-	int BlockX = (int) floor(NextPos.x);
-	int BlockY = (int) floor(NextPos.y);
-	int BlockZ = (int) floor(NextPos.z);
+	Vector3d NextPos = Vector3d(GetPosX(), GetPosY(), GetPosZ());
+	Vector3d NextSpeed = Vector3d(GetSpeedX(), GetSpeedY(), GetSpeedZ());
 	
 	if ((BlockY >= cChunkDef::Height) || (BlockY < 0))
 	{
-		// Outside of the world
-		
-		cChunk * NextChunk = a_Chunk.GetNeighborChunk(BlockX, BlockZ);
-		// See if we can commit our changes. If not, we will discard them.
-		if (NextChunk != NULL)
-		{
-			SetSpeed(NextSpeed);
-			NextPos += (NextSpeed * a_Dt);
-			SetPosition(NextPos);
-		}
-
+		// Outside of the world		
+		AddSpeedY(m_Gravity * a_Dt);
+		AddPosition(GetSpeed() * a_Dt);
 		return;
 	}
 	
-	int RelBlockX = BlockX - (a_Chunk.GetPosX() * cChunkDef::Width);
-	int RelBlockZ = BlockZ - (a_Chunk.GetPosZ() * cChunkDef::Width);
-	BLOCKTYPE BlockIn = a_Chunk.GetBlock( RelBlockX, BlockY, RelBlockZ );
-	BLOCKTYPE BlockBelow = (BlockY > 0) ? a_Chunk.GetBlock(RelBlockX, BlockY - 1, RelBlockZ) : E_BLOCK_AIR;
+	int RelBlockX = BlockX - (NextChunk->GetPosX() * cChunkDef::Width);
+	int RelBlockZ = BlockZ - (NextChunk->GetPosZ() * cChunkDef::Width);
+	BLOCKTYPE BlockIn = NextChunk->GetBlock( RelBlockX, BlockY, RelBlockZ );
+	BLOCKTYPE BlockBelow = (BlockY > 0) ? NextChunk->GetBlock(RelBlockX, BlockY - 1, RelBlockZ) : E_BLOCK_AIR;
 	if (!cBlockInfo::IsSolid(BlockIn))  // Making sure we are not inside a solid block
 	{
 		if (m_bOnGround)  // check if it's still on the ground
@@ -616,7 +611,7 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		bool IsNoAirSurrounding = true;
 		for (size_t i = 0; i < ARRAYCOUNT(gCrossCoords); i++)
 		{
-			if (!a_Chunk.UnboundedRelGetBlockType(RelBlockX + gCrossCoords[i].x, BlockY, RelBlockZ + gCrossCoords[i].z, GotBlock))
+			if (!NextChunk->UnboundedRelGetBlockType(RelBlockX + gCrossCoords[i].x, BlockY, RelBlockZ + gCrossCoords[i].z, GotBlock))
 			{
 				// The pickup is too close to an unloaded chunk, bail out of any physics handling
 				return;
@@ -764,20 +759,8 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		}
 	}
 
-	BlockX = (int) floor(NextPos.x);
-	BlockZ = (int) floor(NextPos.z);
-
-	cChunk * NextChunk = a_Chunk.GetNeighborChunk(BlockX, BlockZ);
-	// See if we can commit our changes. If not, we will discard them.
-	if (NextChunk != NULL)
-	{
-		if (NextPos.x != GetPosX()) SetPosX(NextPos.x);
-		if (NextPos.y != GetPosY()) SetPosY(NextPos.y);
-		if (NextPos.z != GetPosZ()) SetPosZ(NextPos.z);
-		if (NextSpeed.x != GetSpeedX()) SetSpeedX(NextSpeed.x);
-		if (NextSpeed.y != GetSpeedY()) SetSpeedY(NextSpeed.y);
-		if (NextSpeed.z != GetSpeedZ()) SetSpeedZ(NextSpeed.z);
-	}
+	SetPosition(NextPos);
+	SetSpeed(NextSpeed);
 }
 
 
@@ -806,7 +789,7 @@ void cEntity::TickBurning(cChunk & a_Chunk)
 	int MaxRelX = (int)floor(GetPosX() + m_Width / 2) - a_Chunk.GetPosX() * cChunkDef::Width;
 	int MinRelZ = (int)floor(GetPosZ() - m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
 	int MaxRelZ = (int)floor(GetPosZ() + m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
-	int MinY = std::max(0, std::min(cChunkDef::Height - 1, (int)floor(GetPosY())));
+	int MinY = std::max(0, std::min(cChunkDef::Height - 1, POSY_TOINT));
 	int MaxY = std::max(0, std::min(cChunkDef::Height - 1, (int)ceil (GetPosY() + m_Height)));
 	bool HasWater = false;
 	bool HasLava = false;
@@ -981,13 +964,13 @@ void cEntity::HandleAir(void)
 			}
 			else
 			{
-				m_AirTickTimer -= 1;
+				m_AirTickTimer--;
 			}
 		}
 		else
 		{
 			// Reduce air supply
-			m_AirLevel -= 1;
+			m_AirLevel--;
 		}
 	}
 	else
@@ -1099,15 +1082,15 @@ void cEntity::TeleportToCoords(double a_PosX, double a_PosY, double a_PosZ)
 
 void cEntity::BroadcastMovementUpdate(const cClientHandle * a_Exclude)
 {
-	//We need to keep updating the clients when there is movement or if there was a change in speed and after 2 ticks
-	if( (m_Speed.SqrLength() > 0.0004f || m_bDirtySpeed) && (m_World->GetWorldAge() - m_TimeLastSpeedPacket >= 2))
+	// Send velocity packet every two ticks if: speed is not negligible or speed was set (as indicated by the DirtySpeed flag)
+	if (((m_Speed.SqrLength() > 0.0004f) || m_bDirtySpeed) && ((m_World->GetWorldAge() - m_TimeLastSpeedPacket) >= 2))
 	{
 		m_World->BroadcastEntityVelocity(*this,a_Exclude);
 		m_bDirtySpeed = false;
 		m_TimeLastSpeedPacket = m_World->GetWorldAge();
 	}
 
-	//Have to process position related packets this every two ticks
+	// Have to process position related packets this every two ticks
 	if (m_World->GetWorldAge() % 2 == 0)
 	{
 		int DiffX = (int) (floor(GetPosX() * 32.0) - floor(m_LastPosX * 32.0));
diff --git a/src/Entities/Entity.h b/src/Entities/Entity.h
index 6e3f8292b..8f3899e2f 100644
--- a/src/Entities/Entity.h
+++ b/src/Entities/Entity.h
@@ -32,6 +32,8 @@
 #define POSZ_TOINT (int)floor(GetPosZ())
 #define POS_TOINT  Vector3i(POSXTOINT, POSYTOINT, POSZTOINT)
 
+#define GET_AND_VERIFY_CURRENT_CHUNK(ChunkVarName, X, Z) cChunk * ChunkVarName = a_Chunk.GetNeighborChunk(X, Z); if ((ChunkVarName == NULL) || !ChunkVarName->IsValid()) { return; }
+
 
 
 
@@ -88,23 +90,42 @@ public:
 	} ;
 	
 	// tolua_end
-
-	enum
+	
+	enum eEntityStatus
 	{
-		ENTITY_STATUS_HURT            = 2,
-		ENTITY_STATUS_DEAD            = 3,
-		ENTITY_STATUS_WOLF_TAMING     = 6,
-		ENTITY_STATUS_WOLF_TAMED      = 7,
-		ENTITY_STATUS_WOLF_SHAKING    = 8,
-		ENTITY_STATUS_EATING_ACCEPTED = 9,
-		ENTITY_STATUS_SHEEP_EATING    = 10,
-		ENTITY_STATUS_GOLEM_ROSING    = 11,
-		ENTITY_STATUS_VILLAGER_HEARTS = 12,
-		ENTITY_STATUS_VILLAGER_ANGRY  = 13,
-		ENTITY_STATUS_VILLAGER_HAPPY  = 14,
-		ENTITY_STATUS_WITCH_MAGICKING = 15,
+		// TODO: Investiagate 0, 1, and 5 as Wiki.vg is not certain
+
+		// Entity becomes coloured red
+		esGenericHurt            = 2,
+		// Entity plays death animation (entity falls to ground)
+		esGenericDead            = 3,
+		// Iron Golem plays attack animation (arms lift and fall)
+		esIronGolemAttacking     = 4,
+		// Wolf taming particles spawn (smoke)
+		esWolfTaming             = 6,
+		// Wolf tamed particles spawn (hearts)
+		esWolfTamed              = 7,
+		// Wolf plays water removal animation (shaking and water particles)
+		esWolfDryingWater        = 8,
+		// Informs client that eating was accepted
+		esPlayerEatingAccepted   = 9,
+		// Sheep plays eating animation (head lowers to ground)
+		esSheepEating            = 10,
+		// Iron Golem holds gift to villager children
+		esIronGolemGivingPlant   = 11,
+		// Villager spawns heart particles
+		esVillagerBreeding       = 12,
+		// Villager spawns thunderclound particles
+		esVillagerAngry          = 13,
+		// Villager spawns green crosses
+		esVillagerHappy          = 14,
+		// Witch spawns magic particle (TODO: investigation into what this is)
+		esWitchMagicking         = 15,
+
 		// It seems 16 (zombie conversion) is now done with metadata
-		ENTITY_STATUS_FIREWORK_EXPLODE= 17,
+
+		// Informs client to explode a firework based on its metadata
+		esFireworkExploding      = 17,
 	} ;
 	
 	enum
@@ -118,7 +139,8 @@ public:
 		BURN_TICKS = 200,            ///< How long to keep an entity burning after it has stood in lava / fire
 		MAX_AIR_LEVEL = 300,         ///< Maximum air an entity can have
 		DROWNING_TICKS = 20,         ///< Number of ticks per heart of damage
-		VOID_BOUNDARY = -46          ///< At what position Y to begin applying void damage
+		VOID_BOUNDARY = -46,         ///< At what position Y to begin applying void damage
+		FALL_DAMAGE_HEIGHT = 4       ///< At what position Y fall damage is applied
 	} ;
 	
 	cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, double a_Width, double a_Height);
diff --git a/src/Entities/Minecart.cpp b/src/Entities/Minecart.cpp
index 2814ce33c..db55eb058 100644
--- a/src/Entities/Minecart.cpp
+++ b/src/Entities/Minecart.cpp
@@ -132,7 +132,7 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		return;
 	}
 
-	int PosY = (int)floor(GetPosY());
+	int PosY = POSY_TOINT;
 	if ((PosY <= 0) || (PosY >= cChunkDef::Height))
 	{
 		// Outside the world, just process normal falling physics
@@ -141,8 +141,8 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		return;
 	}
 	
-	int RelPosX = (int)floor(GetPosX()) - a_Chunk.GetPosX() * cChunkDef::Width;
-	int RelPosZ = (int)floor(GetPosZ()) - a_Chunk.GetPosZ() * cChunkDef::Width;
+	int RelPosX = POSX_TOINT - a_Chunk.GetPosX() * cChunkDef::Width;
+	int RelPosZ = POSZ_TOINT - a_Chunk.GetPosZ() * cChunkDef::Width;
 	cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);
 	if (Chunk == NULL)
 	{
@@ -195,7 +195,7 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		super::HandlePhysics(a_Dt, *Chunk);
 	}
 
-	if (m_bIsOnDetectorRail && !Vector3i((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ())).Equals(m_DetectorRailPosition))
+	if (m_bIsOnDetectorRail && !Vector3i(POSX_TOINT, POSY_TOINT, POSZ_TOINT).Equals(m_DetectorRailPosition))
 	{
 		m_World->SetBlock(m_DetectorRailPosition.x, m_DetectorRailPosition.y, m_DetectorRailPosition.z, E_BLOCK_DETECTOR_RAIL, m_World->GetBlockMeta(m_DetectorRailPosition) & 0x07);
 		m_bIsOnDetectorRail = false;
@@ -203,7 +203,7 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 	else if (WasDetectorRail)
 	{
 		m_bIsOnDetectorRail = true;
-		m_DetectorRailPosition = Vector3i((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()));
+		m_DetectorRailPosition = Vector3i(POSX_TOINT, POSY_TOINT, POSZ_TOINT);
 	}
 	
 	// Broadcast positioning changes to client
@@ -719,11 +719,11 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 		{
 			if (GetSpeedZ() > 0)
 			{
-				BLOCKTYPE Block = m_World->GetBlock((int)floor(GetPosX()), (int)floor(GetPosY()), (int)ceil(GetPosZ()));
+				BLOCKTYPE Block = m_World->GetBlock(POSX_TOINT, POSY_TOINT, (int)ceil(GetPosZ()));
 				if (!IsBlockRail(Block) && cBlockInfo::IsSolid(Block))
 				{
 					// We could try to detect a block in front based purely on coordinates, but xoft made a bounding box system - why not use? :P
-					cBoundingBox bbBlock(Vector3d((int)floor(GetPosX()), (int)floor(GetPosY()), (int)ceil(GetPosZ())), 0.5, 1);
+					cBoundingBox bbBlock(Vector3d(POSX_TOINT, POSY_TOINT, (int)ceil(GetPosZ())), 0.5, 1);
 					cBoundingBox bbMinecart(Vector3d(GetPosX(), floor(GetPosY()), GetPosZ()), GetWidth() / 2, GetHeight());
 
 					if (bbBlock.DoesIntersect(bbMinecart))
@@ -736,10 +736,10 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 			}
 			else if (GetSpeedZ() < 0)
 			{
-				BLOCKTYPE Block = m_World->GetBlock((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()) - 1);
+				BLOCKTYPE Block = m_World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT - 1);
 				if (!IsBlockRail(Block) && cBlockInfo::IsSolid(Block))
 				{
-					cBoundingBox bbBlock(Vector3d((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()) - 1), 0.5, 1);
+					cBoundingBox bbBlock(Vector3d(POSX_TOINT, POSY_TOINT, POSZ_TOINT - 1), 0.5, 1);
 					cBoundingBox bbMinecart(Vector3d(GetPosX(), floor(GetPosY()), GetPosZ() - 1), GetWidth() / 2, GetHeight());
 
 					if (bbBlock.DoesIntersect(bbMinecart))
@@ -756,10 +756,10 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 		{
 			if (GetSpeedX() > 0)
 			{
-				BLOCKTYPE Block = m_World->GetBlock((int)ceil(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()));
+				BLOCKTYPE Block = m_World->GetBlock((int)ceil(GetPosX()), POSY_TOINT, POSZ_TOINT);
 				if (!IsBlockRail(Block) && cBlockInfo::IsSolid(Block))
 				{
-					cBoundingBox bbBlock(Vector3d((int)ceil(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ())), 0.5, 1);
+					cBoundingBox bbBlock(Vector3d((int)ceil(GetPosX()), POSY_TOINT, POSZ_TOINT), 0.5, 1);
 					cBoundingBox bbMinecart(Vector3d(GetPosX(), floor(GetPosY()), GetPosZ()), GetWidth() / 2, GetHeight());
 
 					if (bbBlock.DoesIntersect(bbMinecart))
@@ -772,10 +772,10 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 			}
 			else if (GetSpeedX() < 0)
 			{
-				BLOCKTYPE Block = m_World->GetBlock((int)floor(GetPosX()) - 1, (int)floor(GetPosY()), (int)floor(GetPosZ()));
+				BLOCKTYPE Block = m_World->GetBlock(POSX_TOINT - 1, POSY_TOINT, POSZ_TOINT);
 				if (!IsBlockRail(Block) && cBlockInfo::IsSolid(Block))
 				{
-					cBoundingBox bbBlock(Vector3d((int)floor(GetPosX()) - 1, (int)floor(GetPosY()), (int)floor(GetPosZ())), 0.5, 1);
+					cBoundingBox bbBlock(Vector3d(POSX_TOINT - 1, POSY_TOINT, POSZ_TOINT), 0.5, 1);
 					cBoundingBox bbMinecart(Vector3d(GetPosX() - 1, floor(GetPosY()), GetPosZ()), GetWidth() / 2, GetHeight());
 
 					if (bbBlock.DoesIntersect(bbMinecart))
@@ -793,10 +793,10 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 		case E_META_RAIL_CURVED_ZP_XM:
 		case E_META_RAIL_CURVED_ZP_XP:
 		{
-			BLOCKTYPE BlockXM = m_World->GetBlock((int)floor(GetPosX()) - 1, (int)floor(GetPosY()), (int)floor(GetPosZ()));
-			BLOCKTYPE BlockXP = m_World->GetBlock((int)floor(GetPosX()) + 1, (int)floor(GetPosY()), (int)floor(GetPosZ()));
-			BLOCKTYPE BlockZM = m_World->GetBlock((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()) - 1);
-			BLOCKTYPE BlockZP = m_World->GetBlock((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()) + 1);
+			BLOCKTYPE BlockXM = m_World->GetBlock(POSX_TOINT - 1, POSY_TOINT, POSZ_TOINT);
+			BLOCKTYPE BlockXP = m_World->GetBlock(POSX_TOINT + 1, POSY_TOINT, POSZ_TOINT);
+			BLOCKTYPE BlockZM = m_World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT - 1);
+			BLOCKTYPE BlockZP = m_World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT + 1);
 			if (
 				(!IsBlockRail(BlockXM) && cBlockInfo::IsSolid(BlockXM)) ||
 				(!IsBlockRail(BlockXP) && cBlockInfo::IsSolid(BlockXP)) ||
@@ -805,7 +805,7 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 				)
 			{
 				SetSpeed(0, 0, 0);
-				SetPosition((int)floor(GetPosX()) + 0.5, GetPosY(), (int)floor(GetPosZ()) + 0.5);
+				SetPosition(POSX_TOINT + 0.5, GetPosY(), POSZ_TOINT + 0.5);
 				return true;
 			}
 			break;
@@ -822,7 +822,7 @@ bool cMinecart::TestEntityCollision(NIBBLETYPE a_RailMeta)
 {
 	cMinecartCollisionCallback MinecartCollisionCallback(GetPosition(), GetHeight(), GetWidth(), GetUniqueID(), ((m_Attachee == NULL) ? -1 : m_Attachee->GetUniqueID()));
 	int ChunkX, ChunkZ;
-	cChunkDef::BlockToChunk((int)floor(GetPosX()), (int)floor(GetPosZ()), ChunkX, ChunkZ);
+	cChunkDef::BlockToChunk(POSX_TOINT, POSZ_TOINT, ChunkX, ChunkZ);
 	m_World->ForEachEntityInChunk(ChunkX, ChunkZ, MinecartCollisionCallback);
 
 	if (!MinecartCollisionCallback.FoundIntersection())
diff --git a/src/Entities/Pickup.cpp b/src/Entities/Pickup.cpp
index 7fc89b62b..497b41683 100644
--- a/src/Entities/Pickup.cpp
+++ b/src/Entities/Pickup.cpp
@@ -98,45 +98,44 @@ void cPickup::Tick(float a_Dt, cChunk & a_Chunk)
 	
 	if (!m_bCollected)
 	{
-		int BlockY = (int) floor(GetPosY());
+		int BlockY = POSY_TOINT;
+		int BlockX = POSX_TOINT;
+		int BlockZ = POSZ_TOINT;
+
 		if ((BlockY >= 0) && (BlockY < cChunkDef::Height))  // Don't do anything except for falling when outside the world
 		{
-			int BlockX = (int) floor(GetPosX());
-			int BlockZ = (int) floor(GetPosZ());
 			// Position might have changed due to physics. So we have to make sure we have the correct chunk.
-			cChunk * CurrentChunk = a_Chunk.GetNeighborChunk(BlockX, BlockZ);
-			if (CurrentChunk != NULL)  // Make sure the chunk is loaded
-			{
-				int RelBlockX = BlockX - (CurrentChunk->GetPosX() * cChunkDef::Width);
-				int RelBlockZ = BlockZ - (CurrentChunk->GetPosZ() * cChunkDef::Width);
+			GET_AND_VERIFY_CURRENT_CHUNK(CurrentChunk, BlockX, BlockZ)
+			
+			int RelBlockX = BlockX - (CurrentChunk->GetPosX() * cChunkDef::Width);
+			int RelBlockZ = BlockZ - (CurrentChunk->GetPosZ() * cChunkDef::Width);
 				
-				// If the pickup is on the bottommost block position, make it think the void is made of air: (#131)
-				BLOCKTYPE BlockBelow = (BlockY > 0) ? CurrentChunk->GetBlock(RelBlockX, BlockY - 1, RelBlockZ) : E_BLOCK_AIR;
-				BLOCKTYPE BlockIn = CurrentChunk->GetBlock(RelBlockX, BlockY, RelBlockZ);
-
-				if (
-					IsBlockLava(BlockBelow) || (BlockBelow == E_BLOCK_FIRE) ||
-					IsBlockLava(BlockIn) || (BlockIn == E_BLOCK_FIRE)
-				)
+			// If the pickup is on the bottommost block position, make it think the void is made of air: (#131)
+			BLOCKTYPE BlockBelow = (BlockY > 0) ? CurrentChunk->GetBlock(RelBlockX, BlockY - 1, RelBlockZ) : E_BLOCK_AIR;
+			BLOCKTYPE BlockIn = CurrentChunk->GetBlock(RelBlockX, BlockY, RelBlockZ);
+
+			if (
+				IsBlockLava(BlockBelow) || (BlockBelow == E_BLOCK_FIRE) ||
+				IsBlockLava(BlockIn) || (BlockIn == E_BLOCK_FIRE)
+			)
+			{
+				m_bCollected = true;
+				m_Timer = 0;  // We have to reset the timer.
+				m_Timer += a_Dt;  // In case we have to destroy the pickup in the same tick.
+				if (m_Timer > 500.f)  
 				{
-					m_bCollected = true;
-					m_Timer = 0;  // We have to reset the timer.
-					m_Timer += a_Dt;  // In case we have to destroy the pickup in the same tick.
-					if (m_Timer > 500.f)  
-					{
-						Destroy(true);
-						return;
-					}
+					Destroy(true);
+					return;
 				}
+			}
 
-				if (!IsDestroyed()) // Don't try to combine if someone has tried to combine me
+			if (!IsDestroyed()) // Don't try to combine if someone has tried to combine me
+			{
+				cPickupCombiningCallback PickupCombiningCallback(GetPosition(), this);
+				m_World->ForEachEntity(PickupCombiningCallback); // Not ForEachEntityInChunk, otherwise pickups don't combine across chunk boundaries
+				if (PickupCombiningCallback.FoundMatchingPickup())
 				{
-					cPickupCombiningCallback PickupCombiningCallback(GetPosition(), this);
-					m_World->ForEachEntity(PickupCombiningCallback); // Not ForEachEntityInChunk, otherwise pickups don't combine across chunk boundaries
-					if (PickupCombiningCallback.FoundMatchingPickup())
-					{
-						m_World->BroadcastEntityMetadata(*this);
-					}
+					m_World->BroadcastEntityMetadata(*this);
 				}
 			}
 		}
@@ -156,7 +155,7 @@ void cPickup::Tick(float a_Dt, cChunk & a_Chunk)
 		return;
 	}
 
-	if (GetPosY() < -8) // Out of this world and no more visible!
+	if (GetPosY() < VOID_BOUNDARY) // Out of this world and no more visible!
 	{
 		Destroy(true);
 		return;
diff --git a/src/Entities/Pickup.h b/src/Entities/Pickup.h
index 74b917bce..2dcbecaaf 100644
--- a/src/Entities/Pickup.h
+++ b/src/Entities/Pickup.h
@@ -49,9 +49,6 @@ public:
 	bool IsPlayerCreated(void) const { return m_bIsPlayerCreated; } // tolua_export
 
 private:
-	Vector3d   m_ResultingSpeed;	 //Can be used to modify the resulting speed for the current tick ;)
-
-	Vector3d   m_WaterSpeed;
 
 	/** The number of ticks that the entity has existed / timer between collect and destroy; in msec */
 	float m_Timer;
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index df656ffa1..46edb7199 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -438,7 +438,7 @@ void cPlayer::SetTouchGround(bool a_bTouchGround)
 		cWorld * World = GetWorld();
 		if ((GetPosY() >= 0) && (GetPosY() < cChunkDef::Height))
 		{
-			BLOCKTYPE BlockType = World->GetBlock((int)floor(GetPosX()), (int)floor(GetPosY()), (int)floor(GetPosZ()));
+			BLOCKTYPE BlockType = World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT);
 			if (BlockType != E_BLOCK_AIR)
 			{
 				m_bTouchGround = true;
@@ -467,7 +467,7 @@ void cPlayer::SetTouchGround(bool a_bTouchGround)
 			TakeDamage(dtFalling, NULL, Damage, Damage, 0);
 			
 			// Fall particles
-			GetWorld()->BroadcastSoundParticleEffect(2006, (int)floor(GetPosX()), (int)GetPosY() - 1, (int)floor(GetPosZ()), Damage /* Used as particle effect speed modifier */);
+			GetWorld()->BroadcastSoundParticleEffect(2006, POSX_TOINT, (int)GetPosY() - 1, POSZ_TOINT, Damage /* Used as particle effect speed modifier */);
 		}		
 
 		m_LastGroundHeight = (float)GetPosY();
@@ -591,7 +591,7 @@ void cPlayer::FinishEating(void)
 	m_EatingFinishTick = -1;
 	
 	// Send the packets:
-	m_ClientHandle->SendEntityStatus(*this, ENTITY_STATUS_EATING_ACCEPTED);
+	m_ClientHandle->SendEntityStatus(*this, esPlayerEatingAccepted);
 	m_World->BroadcastEntityAnimation(*this, 0);
 	m_World->BroadcastEntityMetadata(*this);
 
@@ -1520,22 +1520,16 @@ void cPlayer::LoadPermissionsFromDisk()
 	cIniFile IniFile;
 	if (IniFile.ReadFile("users.ini"))
 	{
-		std::string Groups = IniFile.GetValue(m_PlayerName, "Groups", "");
-		if (!Groups.empty())
+		AString Groups = IniFile.GetValueSet(m_PlayerName, "Groups", "Default");
+		AStringVector Split = StringSplitAndTrim(Groups, ",");
+
+		for (AStringVector::const_iterator itr = Split.begin(), end = Split.end(); itr != end; ++itr)
 		{
-			AStringVector Split = StringSplitAndTrim(Groups, ",");
-			for (AStringVector::const_iterator itr = Split.begin(), end = Split.end(); itr != end; ++itr)
+			if (!cRoot::Get()->GetGroupManager()->ExistsGroup(*itr))
 			{
-				if (!cRoot::Get()->GetGroupManager()->ExistsGroup(*itr))
-				{
-					LOGWARNING("The group %s for player %s was not found!", itr->c_str(), m_PlayerName.c_str());
-				}
-				AddToGroup(*itr);
+				LOGWARNING("The group %s for player %s was not found!", itr->c_str(), m_PlayerName.c_str());
 			}
-		}
-		else
-		{
-			AddToGroup("Default");
+			AddToGroup(*itr);
 		}
 
 		AString Color = IniFile.GetValue(m_PlayerName, "Color", "-");
@@ -1547,8 +1541,10 @@ void cPlayer::LoadPermissionsFromDisk()
 	else
 	{
 		cGroupManager::GenerateDefaultUsersIni(IniFile);
+		IniFile.AddValue("Groups", m_PlayerName, "Default");
 		AddToGroup("Default");
 	}
+	IniFile.WriteFile("users.ini");
 	ResolvePermissions();
 }
 
@@ -1900,9 +1896,9 @@ void cPlayer::ApplyFoodExhaustionFromMovement()
 void cPlayer::Detach()
 {
 	super::Detach();
-	int PosX = (int)floor(GetPosX());
-	int PosY = (int)floor(GetPosY());
-	int PosZ = (int)floor(GetPosZ());
+	int PosX = POSX_TOINT;
+	int PosY = POSY_TOINT;
+	int PosZ = POSZ_TOINT;
 
 	// Search for a position within an area to teleport player after detachment
 	// Position must be solid land, and occupied by a nonsolid block
diff --git a/src/Entities/ProjectileEntity.cpp b/src/Entities/ProjectileEntity.cpp
index e86bb48bd..96db17ffd 100644
--- a/src/Entities/ProjectileEntity.cpp
+++ b/src/Entities/ProjectileEntity.cpp
@@ -791,7 +791,7 @@ void cFireworkEntity::Tick(float a_Dt, cChunk & a_Chunk)
 
 	if (m_ExplodeTimer == m_FireworkItem.m_FireworkItem.m_FlightTimeInTicks)
 	{
-		m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_FIREWORK_EXPLODE);
+		m_World->BroadcastEntityStatus(*this, esFireworkExploding);
 		Destroy();
 	}
 
diff --git a/src/Generating/NetherFortGen.cpp b/src/Generating/NetherFortGen.cpp
index b6ec46986..d90fdeb0a 100644
--- a/src/Generating/NetherFortGen.cpp
+++ b/src/Generating/NetherFortGen.cpp
@@ -71,6 +71,40 @@ public:
 
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Performance test of the NetherFort generator:
+
+/*
+#include "OSSupport/Timer.h"
+static class cNetherFortPerfTest
+{
+public:
+	cNetherFortPerfTest(void)
+	{
+		cTimer Timer;
+		long long StartTime = Timer.GetNowTime();
+		
+		const int GridSize = 512;
+		const int MaxDepth = 12;
+		const int NumIterations = 100;
+		for (int i = 0; i < NumIterations; i++)
+		{
+			cNetherFortGen FortGen(i, GridSize, MaxDepth);
+			delete new cNetherFortGen::cNetherFort(FortGen, 0, 0, GridSize, MaxDepth, i);
+		}
+		
+		long long EndTime = Timer.GetNowTime();
+		printf("%d forts took %lld msec (%f sec) to generate\n", NumIterations, EndTime - StartTime, ((double)(EndTime - StartTime)) / 1000);
+		exit(0);
+	}
+	
+} g_PerfTest;
+//*/
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cNetherFortGen:
 
 cNetherFortGen::cNetherFortGen(int a_Seed, int a_GridSize, int a_MaxDepth) :
@@ -258,6 +292,15 @@ cPieces cNetherFortGen::GetStartingPieces(void)
 
 
 
+int cNetherFortGen::GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const cPiece::cConnector & a_ExistingConnector, const cPiece & a_NewPiece)
+{
+	return ((const cPrefab &)a_NewPiece).GetPieceWeight(a_PlacedPiece, a_ExistingConnector);
+}
+
+
+
+
+
 void cNetherFortGen::PiecePlaced(const cPiece & a_Piece)
 {
 	UNUSED(a_Piece);
diff --git a/src/Generating/NetherFortGen.h b/src/Generating/NetherFortGen.h
index 10ba01396..d51596b9e 100644
--- a/src/Generating/NetherFortGen.h
+++ b/src/Generating/NetherFortGen.h
@@ -26,6 +26,7 @@ public:
 	virtual ~cNetherFortGen();
 	
 protected:
+	friend class cNetherFortPerfTest;  // fwd: NetherFortGen.cpp
 	class cNetherFort;  // fwd: NetherFortGen.cpp
 	typedef std::list<cNetherFort *> cNetherForts;
 	
@@ -77,6 +78,7 @@ protected:
 	// cPiecePool overrides:
 	virtual cPieces GetPiecesWithConnector(int a_ConnectorType) override;
 	virtual cPieces GetStartingPieces(void) override;
+	virtual int GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const cPiece::cConnector & a_ExistingConnector, const cPiece & a_NewPiece) override;
 	virtual void PiecePlaced(const cPiece & a_Piece) override;
 	virtual void Reset(void) override;
 } ;
diff --git a/src/Generating/PieceGenerator.cpp b/src/Generating/PieceGenerator.cpp
index 8999a5ff7..8e9a48be6 100644
--- a/src/Generating/PieceGenerator.cpp
+++ b/src/Generating/PieceGenerator.cpp
@@ -392,14 +392,17 @@ bool cPieceGenerator::TryPlacePieceAtConnector(
 	Connections.reserve(AvailablePieces.size());
 	Vector3i ConnPos = a_Connector.m_Pos;  // The position at which the new connector should be placed - 1 block away from the connector
 	AddFaceDirection(ConnPos.x, ConnPos.y, ConnPos.z, a_Connector.m_Direction);
-	
-	/*
-	// DEBUG:
-	printf("Placing piece at connector pos {%d, %d, %d}, direction %s\n", ConnPos.x, ConnPos.y, ConnPos.z, BlockFaceToString(a_Connector.m_Direction).c_str());
-	//*/
-	
+	int WeightTotal = 0;
 	for (cPieces::iterator itrP = AvailablePieces.begin(), endP = AvailablePieces.end(); itrP != endP; ++itrP)
 	{
+		// Get the relative chance of this piece being generated in this path:
+		int Weight = m_PiecePool.GetPieceWeight(a_ParentPiece, a_Connector, **itrP);
+		if (Weight <= 0)
+		{
+			continue;
+		}
+		
+		// Try fitting each of the piece's connector:
 		cPiece::cConnectors Connectors = (*itrP)->GetConnectors();
 		for (cPiece::cConnectors::iterator itrC = Connectors.begin(), endC = Connectors.end(); itrC != endC; ++itrC)
 		{
@@ -419,7 +422,9 @@ bool cPieceGenerator::TryPlacePieceAtConnector(
 				// Doesn't fit in this rotation
 				continue;
 			}
-			Connections.push_back(cConnection(**itrP, *itrC, NumCCWRotations));
+			// Fits, add it to list of possibile connections:
+			Connections.push_back(cConnection(**itrP, *itrC, NumCCWRotations, Weight));
+			WeightTotal += Weight;
 		}  // for itrC - Connectors[]
 	}  // for itrP - AvailablePieces[]
 	if (Connections.empty())
@@ -427,21 +432,23 @@ bool cPieceGenerator::TryPlacePieceAtConnector(
 		// No available connections, bail out
 		return false;
 	}
+	ASSERT(WeightTotal > 0);
 	
-	// Choose a random connection from the list:
-	int rnd = m_Noise.IntNoise3DInt(a_Connector.m_Pos.x, a_Connector.m_Pos.y, a_Connector.m_Pos.z) / 7;
-	cConnection & Conn = Connections[rnd % Connections.size()];
+	// Choose a random connection from the list, based on the weights:
+	int rnd = (m_Noise.IntNoise3DInt(a_Connector.m_Pos.x, a_Connector.m_Pos.y, a_Connector.m_Pos.z) / 7) % WeightTotal;
+	size_t ChosenIndex = 0;
+	for (cConnections::const_iterator itr = Connections.begin(), end = Connections.end(); itr != end; ++itr, ++ChosenIndex)
+	{
+		rnd -= itr->m_Weight;
+		if (rnd <= 0)
+		{
+			// This is the piece to choose
+			break;
+		}
+	}
+	cConnection & Conn = Connections[ChosenIndex];
 	
 	// Place the piece:
-	/*
-	// DEBUG
-	printf("Chosen connector at {%d, %d, %d}, direction %s, needs %d rotations\n",
-		Conn.m_Connector.m_Pos.x, Conn.m_Connector.m_Pos.y, Conn.m_Connector.m_Pos.z,
-		BlockFaceToString(Conn.m_Connector.m_Direction).c_str(),
-		Conn.m_NumCCWRotations
-	);
-	//*/
-	
 	Vector3i NewPos = Conn.m_Piece->RotatePos(Conn.m_Connector.m_Pos, Conn.m_NumCCWRotations);
 	ConnPos -= NewPos;
 	cPlacedPiece * PlacedPiece = new cPlacedPiece(&a_ParentPiece, *(Conn.m_Piece), ConnPos, Conn.m_NumCCWRotations);
@@ -449,12 +456,6 @@ bool cPieceGenerator::TryPlacePieceAtConnector(
 	
 	// Add the new piece's connectors to the list of free connectors:
 	cPiece::cConnectors Connectors = Conn.m_Piece->GetConnectors();
-	
-	/*
-	// DEBUG:
-	printf("Adding %u connectors to the pool\n", Connectors.size() - 1);
-	//*/
-	
 	for (cPiece::cConnectors::const_iterator itr = Connectors.begin(), end = Connectors.end(); itr != end; ++itr)
 	{
 		if (itr->m_Pos.Equals(Conn.m_Connector.m_Pos))
@@ -524,10 +525,11 @@ void cPieceGenerator::DebugConnectorPool(const cPieceGenerator::cFreeConnectors
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cPieceGenerator::cConnection:
 
-cPieceGenerator::cConnection::cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations) :
+cPieceGenerator::cConnection::cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations, int a_Weight) :
 	m_Piece(&a_Piece),
 	m_Connector(a_Connector),
-	m_NumCCWRotations(a_NumCCWRotations)
+	m_NumCCWRotations(a_NumCCWRotations),
+	m_Weight(a_Weight)
 {
 }
 
diff --git a/src/Generating/PieceGenerator.h b/src/Generating/PieceGenerator.h
index bef9d3463..f4433b947 100644
--- a/src/Generating/PieceGenerator.h
+++ b/src/Generating/PieceGenerator.h
@@ -85,6 +85,13 @@ typedef std::vector<cPiece *> cPieces;
 
 
 
+// fwd:
+class cPlacedPiece;
+
+
+
+
+
 /** This class is an interface that provides pieces for the generator. It can keep track of what pieces were
 placed and adjust the returned piece vectors. */
 class cPiecePool
@@ -101,6 +108,16 @@ public:
 	Multiple starting points are supported, one of the returned piece will be chosen. */
 	virtual cPieces GetStartingPieces(void) = 0;
 	
+	/** Returns the relative weight with which the a_NewPiece is to be selected for placing under a_PlacedPiece through a_ExistingConnector.
+	This allows the pool to tweak the piece's chances, based on the previous pieces in the tree and the connector used.
+	The higher the number returned, the higher the chance the piece will be chosen. 0 means the piece will never be chosen.
+	*/
+	virtual int GetPieceWeight(
+		const cPlacedPiece & a_PlacedPiece,
+		const cPiece::cConnector & a_ExistingConnector,
+		const cPiece & a_NewPiece
+	) { return 1; }
+	
 	/** Called after a piece is placed, to notify the pool that it has been used.
 	The pool may adjust the pieces it will return the next time. */
 	virtual void PiecePlaced(const cPiece & a_Piece) = 0;
@@ -157,8 +174,9 @@ protected:
 		cPiece * m_Piece;                  // The piece being connected
 		cPiece::cConnector m_Connector;    // The piece's connector being used (relative non-rotated coords)
 		int m_NumCCWRotations;             // Number of rotations necessary to match the two connectors
+		int m_Weight;                      // Relative chance that this connection will be chosen
 		
-		cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations);
+		cConnection(cPiece & a_Piece, cPiece::cConnector & a_Connector, int a_NumCCWRotations, int a_Weight);
 	};
 	typedef std::vector<cConnection> cConnections;
 	
diff --git a/src/Generating/Prefab.cpp b/src/Generating/Prefab.cpp
index 131b6acb2..7d1762036 100644
--- a/src/Generating/Prefab.cpp
+++ b/src/Generating/Prefab.cpp
@@ -91,7 +91,19 @@ static const cPrefab::sDef g_TestPrefabDef =
 	7,  /* 1, 2, 3 CCW rotations */
 	
 	// Merge strategy:
-	cBlockArea::msImprint
+	cBlockArea::msImprint,
+	
+	// ShouldExtendFloor:
+	false,
+
+	// DefaultWeight:
+	10,
+
+	// DepthWeight:
+	"",
+
+	// AddWeightIfSame:
+	1000,
 };
 
 static cPrefab g_TestPrefab(g_TestPrefabDef);
@@ -105,13 +117,17 @@ cPrefab::cPrefab(const cPrefab::sDef & a_Def) :
 	m_Size(a_Def.m_SizeX, a_Def.m_SizeY, a_Def.m_SizeZ),
 	m_HitBox(0, 0, 0, a_Def.m_SizeX - 1, a_Def.m_SizeY - 1, a_Def.m_SizeZ - 1),
 	m_AllowedRotations(a_Def.m_AllowedRotations),
-	m_MergeStrategy(a_Def.m_MergeStrategy)
+	m_MergeStrategy(a_Def.m_MergeStrategy),
+	m_ShouldExtendFloor(a_Def.m_ShouldExtendFloor),
+	m_DefaultWeight(a_Def.m_DefaultWeight),
+	m_AddWeightIfSame(a_Def.m_AddWeightIfSame)
 {
 	m_BlockArea[0].Create(m_Size);
 	CharMap cm;
 	ParseCharMap(cm, a_Def.m_CharMap);
 	ParseBlockImage(cm, a_Def.m_Image);
 	ParseConnectors(a_Def.m_Connectors);
+	ParseDepthWeight(a_Def.m_DepthWeight);
 	
 	// 1 CCW rotation:
 	if ((m_AllowedRotations & 0x01) != 0)
@@ -142,12 +158,53 @@ cPrefab::cPrefab(const cPrefab::sDef & a_Def) :
 
 void cPrefab::Draw(cChunkDesc & a_Dest, const cPlacedPiece * a_Placement) const
 {
+	// Draw the basic image:
 	Vector3i Placement = a_Placement->GetCoords();
 	int ChunkStartX = a_Dest.GetChunkX() * cChunkDef::Width;
 	int ChunkStartZ = a_Dest.GetChunkZ() * cChunkDef::Width;
 	Placement.Move(-ChunkStartX, 0, -ChunkStartZ);
-	a_Dest.WriteBlockArea(m_BlockArea[a_Placement->GetNumCCWRotations()], Placement.x, Placement.y, Placement.z, m_MergeStrategy);
+	const cBlockArea & Image = m_BlockArea[a_Placement->GetNumCCWRotations()];
+	a_Dest.WriteBlockArea(Image, Placement.x, Placement.y, Placement.z, m_MergeStrategy);
 	
+	// If requested, draw the floor (from the bottom of the prefab down to the nearest non-air)
+	int MaxX = Image.GetSizeX();
+	int MaxZ = Image.GetSizeZ();
+	for (int z = 0; z < MaxZ; z++)
+	{
+		int RelZ = Placement.z + z;
+		if ((RelZ < 0) || (RelZ >= cChunkDef::Width))
+		{
+			// Z coord outside the chunk
+			continue;
+		}
+		for (int x = 0; x < MaxX; x++)
+		{
+			int RelX = Placement.x + x;
+			if ((RelX < 0) || (RelX >= cChunkDef::Width))
+			{
+				// X coord outside the chunk
+				continue;
+			}
+			BLOCKTYPE BlockType;
+			NIBBLETYPE BlockMeta;
+			Image.GetRelBlockTypeMeta(x, 0, z, BlockType, BlockMeta);
+			if ((BlockType == E_BLOCK_AIR) || (BlockType == E_BLOCK_SPONGE))
+			{
+				// Do not expand air nor sponge blocks
+				continue;
+			}
+			for (int y = Placement.y - 1; y >= 0; y--)
+			{
+				BLOCKTYPE ExistingBlock = a_Dest.GetBlockType(RelX, y, RelZ);
+				if (ExistingBlock != E_BLOCK_AIR)
+				{
+					// End the expansion for this column, reached the end
+					break;
+				}
+				a_Dest.SetBlockTypeMeta(RelX, y, RelZ, BlockType, BlockMeta);
+			}  // for y
+		}  // for x
+	}  // for z
 }
 
 
@@ -170,6 +227,26 @@ bool cPrefab::HasConnectorType(int a_ConnectorType) const
 
 
 
+int cPrefab::GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const cPiece::cConnector & a_ExistingConnector) const
+{
+	// Use the default or per-depth weight:
+	cDepthWeight::const_iterator itr = m_DepthWeight.find(a_PlacedPiece.GetDepth() + 1);
+	int res = (itr == m_DepthWeight.end()) ? m_DefaultWeight : itr->second;
+	
+	// If the piece is the same as the parent, apply the m_AddWeightIfSame modifier:
+	const cPiece * ParentPiece = &a_PlacedPiece.GetPiece();
+	const cPiece * ThisPiece = this;
+	if (ThisPiece == ParentPiece)
+	{
+		res += m_AddWeightIfSame;
+	}
+	return res;
+}
+
+
+
+
+
 void cPrefab::ParseCharMap(CharMap & a_CharMapOut, const char * a_CharMapDef)
 {
 	ASSERT(a_CharMapDef != NULL);
@@ -277,6 +354,54 @@ void cPrefab::ParseConnectors(const char * a_ConnectorsDef)
 
 
 
+void cPrefab::ParseDepthWeight(const char * a_DepthWeightDef)
+{
+	// The member needn't be defined at all, if so, skip:
+	if (a_DepthWeightDef == NULL)
+	{
+		return;
+	}
+	
+	// Split into individual records: "Record | Record | Record"
+	AStringVector Defs = StringSplitAndTrim(a_DepthWeightDef, "|");
+	
+	// Add each record's contents:
+	for (AStringVector::const_iterator itr = Defs.begin(), end = Defs.end(); itr != end; ++itr)
+	{
+		// Split into components: "Depth : Weight"
+		AStringVector Components = StringSplitAndTrim(*itr, ":");
+		if (Components.size() != 2)
+		{
+			LOGWARNING("Bad prefab DepthWeight record: \"%s\", skipping.", itr->c_str());
+			continue;
+		}
+		
+		// Parse depth:
+		int Depth = atoi(Components[0].c_str());
+		if ((Depth == 0) && (Components[0] != "0"))
+		{
+			LOGWARNING("Bad prefab DepthWeight record, cannot parse depth \"%s\", skipping.", Components[0].c_str());
+			continue;
+		}
+		
+		// Parse weight:
+		int Weight = atoi(Components[1].c_str());
+		if ((Weight == 0) && (Components[1] != "0"))
+		{
+			LOGWARNING("Bad prefab DepthWeight record, cannot parse weight \"%s\", skipping.", Components[1].c_str());
+			continue;
+		}
+		
+		// Save to map:
+		ASSERT(m_DepthWeight.find(Depth) == m_DepthWeight.end());  // Not a duplicate
+		m_DepthWeight[Depth] = Weight;
+	}  // for itr - Defs[]
+}
+
+
+
+
+
 cPiece::cConnectors cPrefab::GetConnectors(void) const
 {
 	return m_Connectors;
diff --git a/src/Generating/Prefab.h b/src/Generating/Prefab.h
index 04c4f09da..dbf882e21 100644
--- a/src/Generating/Prefab.h
+++ b/src/Generating/Prefab.h
@@ -37,11 +37,47 @@ public:
 		int m_SizeX;
 		int m_SizeY;
 		int m_SizeZ;
+		
+		/** The mapping between characters in m_Image and the blocktype / blockmeta.
+		Format: "Char: BlockType: BlockMeta \n Char: BlockType : BlockMeta \n ..." */
 		const char * m_CharMap;
+		
+		/** The actual image to be used for the prefab. Organized YZX (Y changes the least often).
+		Each character represents a single block, the type is mapped through m_CharMap. */
 		const char * m_Image;
+		
+		/** List of connectors.
+		Format: "Type: X, Y, Z : Direction \n Type : X, Y, Z : Direction \n ...".
+		Type is an arbitrary number, Direction is the BlockFace constant value (0 .. 5). */
 		const char * m_Connectors;
+		
+		/** Bitmask specifying the allowed rotations.
+		N rotations CCW are allowed if bit N is set. */
 		int m_AllowedRotations;
+		
+		/** The merge strategy to use while drawing the prefab. */
 		cBlockArea::eMergeStrategy m_MergeStrategy;
+		
+		/** If set to true, the prefab will extend its lowermost blocks until a solid block is found,
+		thus creating a foundation for the prefab. This is used for houses to be "on the ground", as well as
+		nether fortresses not to float. */
+		bool m_ShouldExtendFloor;
+
+		/** Chance of this piece being used, if no other modifier is active. */
+		int m_DefaultWeight;
+		
+		/** Chances of this piece being used, per depth of the generated piece tree.
+		The starting piece has a depth of 0, the pieces connected to it are depth 1, etc.
+		The specified depth stands for the depth of the new piece (not the existing already-placed piece),
+		so valid depths start at 1.
+		Format: "Depth : Weight | Depth : Weight | Depth : Weight ..."
+		Depths that are not specified will use the m_DefaultWeight value. */
+		const char * m_DepthWeight;
+		
+		/** The weight to add to this piece's base per-depth chance if the previous piece is the same.
+		Can be positive or negative.
+		This is used e. g. to make nether bridges prefer spanning multiple segments or to penalize turrets next to each other. */
+		int m_AddWeightIfSame;
 	};
 	
 	cPrefab(const sDef & a_Def);
@@ -51,6 +87,10 @@ public:
 	
 	/** Returns true if the prefab has any connector of the specified type. */
 	bool HasConnectorType(int a_ConnectorType) const;
+	
+	/** Returns the weight (chance) of this prefab generating as the next piece after the specified placed piece.
+	PiecePool implementations can use this for their GetPieceWeight() implementations. */
+	int GetPieceWeight(const cPlacedPiece & a_PlacedPiece, const cPiece::cConnector & a_ExistingConnector) const;
 
 protected:
 	/** Packs complete definition of a single block, for per-letter assignment. */
@@ -60,9 +100,12 @@ protected:
 		NIBBLETYPE m_BlockMeta;
 	};
 	
-	/** Maps letters in the sDef::m_Image onto a number, BlockType * 16 | BlockMeta */
+	/** Maps letters in the sDef::m_Image onto a sBlockTypeDef block type definition. */
 	typedef sBlockTypeDef CharMap[256];
 	
+	/** Maps generator tree depth to weight. */
+	typedef std::map<int, int> cDepthWeight;
+	
 	
 	/** The cBlockArea that contains the block definitions for the prefab.
 	The index identifies the number of CCW rotations applied (0 = no rotation, 1 = 1 CCW rotation, ...). */
@@ -82,6 +125,26 @@ protected:
 	
 	/** The merge strategy to use when drawing the prefab into a block area */
 	cBlockArea::eMergeStrategy m_MergeStrategy;
+
+	/** If set to true, the prefab will extend its lowermost blocks until a solid block is found,
+	thus creating a foundation for the prefab. This is used for houses to be "on the ground", as well as
+	nether fortresses not to float. */
+	bool m_ShouldExtendFloor;
+
+	/** Chance of this piece being used, if no other modifier is active. */
+	int m_DefaultWeight;
+	
+	/** Chances of this piece being used, per depth of the generated piece tree.
+	The starting piece has a depth of 0, the pieces connected to it are depth 1, etc.
+	The specified depth stands for the depth of the new piece (not the existing already-placed piece),
+	so valid depths start at 1.
+	Depths that are not specified will use the m_DefaultWeight value. */
+	cDepthWeight m_DepthWeight;
+	
+	/** The weight to add to this piece's base per-depth chance if the previous piece is the same.
+	Can be positive or negative.
+	This is used e. g. to make nether bridges prefer spanning multiple segments or to penalize turrets next to each other. */
+	int m_AddWeightIfSame;
 	
 	
 	// cPiece overrides:	
@@ -98,6 +161,9 @@ protected:
 	
 	/** Parses the connectors definition text into m_Connectors member. */
 	void ParseConnectors(const char * a_ConnectorsDef);
+	
+	/** Parses the per-depth weight into m_DepthWeight member. */
+	void ParseDepthWeight(const char * a_DepthWeightDef);
 };
 
 
diff --git a/src/Generating/Prefabs/NetherFortPrefabs.cpp b/src/Generating/Prefabs/NetherFortPrefabs.cpp
index 29b35a5a4..7a46df5d8 100644
--- a/src/Generating/Prefabs/NetherFortPrefabs.cpp
+++ b/src/Generating/Prefabs/NetherFortPrefabs.cpp
@@ -133,10 +133,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 2, 2: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		20,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BalconyCorridor
 
 
@@ -274,10 +286,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 2, 4: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		20,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BalconyTee2
 
 
@@ -378,10 +402,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 0, 1, 3: 4\n"  /* Type 0, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BlazePlatform
 
 
@@ -510,10 +546,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 0, 5, 3: 4\n"  /* Type 0, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BlazePlatformOverhang
 
 
@@ -694,10 +742,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 7, 5, 14: 3\n"  /* Type 0, direction Z+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		5,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeCircleCrossing
 
 
@@ -879,10 +939,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 14, 5, 7: 5\n"  /* Type 0, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		10,
+
+		// DepthWeight:
+		"1:1000",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeCrossing
 
 
@@ -957,10 +1029,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 0, 5, 2: 4\n"  /* Type 0, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"1:0",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeCrumble1
 
 
@@ -1041,10 +1125,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 5, 2: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"1:0",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeCrumble2
 
 
@@ -1204,15 +1300,263 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 2, 4, 15: 3\n"  /* Type 0, direction Z+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		10,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		1000,
 	},  // BridgeDoubleCrumble
 
 
 
 	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+	// BridgeFunnelDown:
+	// The data has been exported from the gallery Nether, area index 0, ID 2, created by Aloe_vera
+	{
+		// Size:
+		15, 12, 12,  // SizeX = 15, SizeY = 12, SizeZ = 12
+
+		// Block definitions:
+		".:  0: 0\n"  /* air */
+		"a:112: 0\n"  /* netherbrick */
+		"b:114: 6\n"  /* netherbrickstairs */
+		"c:114: 4\n"  /* netherbrickstairs */
+		"d:114: 5\n"  /* netherbrickstairs */
+		"e: 44:14\n"  /* step */
+		"f:114: 7\n"  /* netherbrickstairs */
+		"m: 19: 0\n"  /* sponge */,
+
+		// Block data:
+		// Level 0
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aammmmmmmmmmmaa"
+		/*  2 */ "aammmmmmmmmmmaa"
+		/*  3 */ "aammmmmmmmmmmaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmmmmmmmmmmm"
+		/*  8 */ "mmmmmmmmmmmmmmm"
+		/*  9 */ "mmmmmmaaammmmmm"
+		/* 10 */ "mmmmmmaaammmmmm"
+		/* 11 */ "mmmmmmaaammmmmm"
+
+		// Level 1
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aammmmmmmmmmmaa"
+		/*  2 */ "aammmmmmmmmmmaa"
+		/*  3 */ "aammmmmmmmmmmaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmmmmmmmmmmm"
+		/*  8 */ "mmmmmmbbbmmmmmm"
+		/*  9 */ "mmmmmmaaammmmmm"
+		/* 10 */ "mmmmmmaaammmmmm"
+		/* 11 */ "mmmmmmaaammmmmm"
+
+		// Level 2
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aammmmmmmmmmmaa"
+		/*  2 */ "aammmmmmmmmmmaa"
+		/*  3 */ "aammmmmmmmmmmaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmcbbbdmmmmm"
+		/*  8 */ "mmmmmcaaadmmmmm"
+		/*  9 */ "mmmmmcaaadmmmmm"
+		/* 10 */ "mmmmmcaaadmmmmm"
+		/* 11 */ "mmmmmcaaadmmmmm"
+
+		// Level 3
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aammmmmmmmmmmaa"
+		/*  2 */ "aammmmmmmmmmmaa"
+		/*  3 */ "aammmmmmmmmmmaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmaaaaammmmm"
+		/*  8 */ "mmmmmaaaaammmmm"
+		/*  9 */ "mmmmmaaaaammmmm"
+		/* 10 */ "mmmmmaaaaammmmm"
+		/* 11 */ "mmmmmaaaaammmmm"
+
+		// Level 4
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aammmmmmmmmmmaa"
+		/*  2 */ "aammmmmmmmmmmaa"
+		/*  3 */ "aammmmmmmmmmmaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmcbbbbbdmmmm"
+		/*  7 */ "mmmmaaaaaaammmm"
+		/*  8 */ "mmmma.....ammmm"
+		/*  9 */ "mmmmaa...aammmm"
+		/* 10 */ "mmmmma...ammmmm"
+		/* 11 */ "mmmmma...ammmmm"
+
+		// Level 5
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aadmmmmmmmmmcaa"
+		/*  2 */ "aadmmmmmmmmmcaa"
+		/*  3 */ "aadmmmmmmmmmcaa"
+		/*  4 */ "mmmmmmmmmmmmmmm"
+		/*  5 */ "mmmcbbbbbbbdmmm"
+		/*  6 */ "mmmaaaaaaaaaamm"
+		/*  7 */ "mmma.......ammm"
+		/*  8 */ "mmmaa.....aammm"
+		/*  9 */ "mmmmam...mammmm"
+		/* 10 */ "mmmmmm...mmmmmm"
+		/* 11 */ "mmmmmm...mmmmmm"
+
+		// Level 6
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "aaademmmmmecaaa"
+		/*  2 */ "aaademmmmmecaaa"
+		/*  3 */ "aaademmmmmecaaa"
+		/*  4 */ "mmaaabbbbbaaaam"
+		/*  5 */ "mmaaaaaaaaaaaam"
+		/*  6 */ "mma.........amm"
+		/*  7 */ "mmaa.......aamm"
+		/*  8 */ "mmmam.....mammm"
+		/*  9 */ "mmmmmm...mmmmmm"
+		/* 10 */ "mmmmmm...mmmmmm"
+		/* 11 */ "mmmmmm...mmmmmm"
+
+		// Level 7
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "bbbbbbbbbbbbbbb"
+		/*  1 */ "aaaaaaaaaaaaaaa"
+		/*  2 */ "aaaaaaaaaaaaaaa"
+		/*  3 */ "aaaaaaaaaaaaaaa"
+		/*  4 */ "faaaaaaaaaaaaaa"
+		/*  5 */ "ma...........am"
+		/*  6 */ "maa.........aam"
+		/*  7 */ "mmam.......mamm"
+		/*  8 */ "mmmmm.....mmmmm"
+		/*  9 */ "mmmmmmmmmmmmmmm"
+		/* 10 */ "mmmmmmmmmmmmmmm"
+		/* 11 */ "mmmmmmmmmmmmmmm"
+
+		// Level 8
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "aaaaaaaaaaaaaaa"
+		/*  1 */ "aaaaaaaaaaaaaaa"
+		/*  2 */ "aaaaaaaaaaaaaaa"
+		/*  3 */ "aaaaaaaaaaaaaaa"
+		/*  4 */ "a.............a"
+		/*  5 */ "aa...........aa"
+		/*  6 */ "mam.........mam"
+		/*  7 */ "mmmm.......mmmm"
+		/*  8 */ "mmmmmmmmmmmmmmm"
+		/*  9 */ "mmmmmmmmmmmmmmm"
+		/* 10 */ "mmmmmmmmmmmmmmm"
+		/* 11 */ "mmmmmmmmmmmmmmm"
+
+		// Level 9
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "aaaaaaaaaaaaaaa"
+		/*  1 */ "..............."
+		/*  2 */ "..............."
+		/*  3 */ "..............."
+		/*  4 */ "a.............a"
+		/*  5 */ "am............a"
+		/*  6 */ "mmm.........mmm"
+		/*  7 */ "mmmmmmmmmmmmmmm"
+		/*  8 */ "mmmmmmmmmmmmmmm"
+		/*  9 */ "mmmmmmmmmmmmmmm"
+		/* 10 */ "mmmmmmmmmmmmmmm"
+		/* 11 */ "mmmmmmmmmmmmmmm"
+
+		// Level 10
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "..............."
+		/*  2 */ "..............."
+		/*  3 */ "..............."
+		/*  4 */ "m.............m"
+		/*  5 */ "mm............m"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmmmmmmmmmmm"
+		/*  8 */ "mmmmmmmmmmmmmmm"
+		/*  9 */ "mmmmmmmmmmmmmmm"
+		/* 10 */ "mmmmmmmmmmmmmmm"
+		/* 11 */ "mmmmmmmmmmmmmmm"
+
+		// Level 11
+		/* z\x*             11111 */
+		/*    *   012345678901234 */
+		/*  0 */ "mmmmmmmmmmmmmmm"
+		/*  1 */ "..............."
+		/*  2 */ "..............."
+		/*  3 */ "..............."
+		/*  4 */ "m.............m"
+		/*  5 */ "mmmmmmmmmmmmmmm"
+		/*  6 */ "mmmmmmmmmmmmmmm"
+		/*  7 */ "mmmmmmmmmmmmmmm"
+		/*  8 */ "mmmmmmmmmmmmmmm"
+		/*  9 */ "mmmmmmmmmmmmmmm"
+		/* 10 */ "mmmmmmmmmmmmmmm"
+		/* 11 */ "mmmmmmmmmmmmmmm",
+
+		// Connectors:
+		"0: 7, 4, 11: 3\n"  /* Type 0, direction Z+ */
+		"0: 0, 9, 2: 4\n"  /* Type 0, direction X- */
+		"0: 14, 9, 2: 5\n"  /* Type 0, direction X+ */,
+
+		// AllowedRotations:
+		7,  /* 1, 2, 3 CCW rotation allowed */
+
+		// Merge strategy:
+		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		5,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
+	},  // BridgeFunnelDown
+
+
+
+	///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 	// BridgeLevelCrossing:
 	// The data has been exported from the gallery Nether, area index 45, ID 304, created by Aloe_vera
 	{
@@ -1514,10 +1858,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"",
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeLevelCrossing
 
 
@@ -1617,10 +1973,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 14, 5, 2: 5\n"  /* Type 0, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		500,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		1000,
 	},  // BridgeSegment
 
 
@@ -1761,10 +2129,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 14, 5, 2: 5\n"  /* Type 0, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		10,
+
+		// DepthWeight:
+		"1:500",
+
+		// AddWeightIfSame:
+		0,
 	},  // BridgeTee
 
 
@@ -1844,10 +2224,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 1, 2: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		200,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // Corridor11
 
 
@@ -1927,10 +2319,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 1, 2: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		200,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // Corridor13
 
 
@@ -2048,10 +2452,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 10, 1, 2: 5\n"  /* Type 1, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // CorridorCorner5
 
 
@@ -2170,10 +2586,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 2, 1, 10: 3\n"  /* Type 1, direction Z+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // CorridorCornerChest5
 
 
@@ -2304,10 +2732,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 8, 8, 2: 5\n"  /* Type 1, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // CorridorStairs
 
 
@@ -2367,11 +2807,11 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		// Level 4
 		/* z\x*             1111 */
 		/*    *   01234567890123 */
-		/*  0 */ "aaaaaaaaaaaaaa"
+		/*  0 */ "aabaaaaaaaabaa"
 		/*  1 */ ".............."
 		/*  2 */ ".............."
 		/*  3 */ ".............."
-		/*  4 */ "aaaaaaaaaaaaaa"
+		/*  4 */ "aabaaaaaaaabaa"
 
 		// Level 5
 		/* z\x*             1111 */
@@ -2387,10 +2827,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 13, 1, 2: 5\n"  /* Type 1, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // DarkCorridor
 
 
@@ -2625,10 +3077,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 9, 1, 0: 2\n"  /* Type 1, direction Z- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // LavaStaircase
 
 
@@ -2938,10 +3402,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 0, 9, 7: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // LavaStaircaseBig
 
 
@@ -3200,10 +3676,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"",
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // LavaStairsBridge
 
 
@@ -3367,13 +3855,25 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 
 		// Connectors:
 		"1: 12, 1, 6: 5\n"  /* Type 1, direction X+ */
-		"1: -1, 1, 6: 4\n"  /* Type 1, direction X- */,
+		"1: 0, 1, 6: 4\n"  /* Type 1, direction X- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // MidStaircase
 
 
@@ -3497,10 +3997,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 3, 1, 0: 2\n"  /* Type 0, direction Z- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // StairsToOpen1
 
 
@@ -3624,10 +4136,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 3, 1, 0: 2\n"  /* Type 0, direction Z- */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // StairsToOpen2
 
 
@@ -3722,10 +4246,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 12, 1, 4: 5\n"  /* Type 1, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // Tee2x4
 
 
@@ -3832,10 +4368,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"1: 12, 1, 6: 5\n"  /* Type 1, direction X+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // Tee4x4
 
 
@@ -3921,10 +4469,22 @@ const cPrefab::sDef g_NetherFortPrefabs[] =
 		"0: 3, 1, 6: 3\n"  /* Type 0, direction Z+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		-99,
 	},  // Turret
 };  // g_NetherFortPrefabs
 
@@ -4108,10 +4668,22 @@ const cPrefab::sDef g_NetherFortStartingPrefabs[] =
 		"1: 6, 1, 12: 3\n"  /* Type 1, direction Z+ */,
 
 		// AllowedRotations:
-		7,  /* 1, 2, 3 CCW rotations */
+		7,  /* 1, 2, 3 CCW rotation allowed */
 
 		// Merge strategy:
 		cBlockArea::msSpongePrint,
+
+		// ShouldExtendFloor:
+		false,
+
+		// DefaultWeight:
+		100,
+
+		// DepthWeight:
+		"",
+
+		// AddWeightIfSame:
+		0,
 	},  // CentralRoom
 };
 
diff --git a/src/Mobs/Monster.cpp b/src/Mobs/Monster.cpp
index 171097aba..d63758b3d 100644
--- a/src/Mobs/Monster.cpp
+++ b/src/Mobs/Monster.cpp
@@ -111,9 +111,9 @@ void cMonster::SpawnOn(cClientHandle & a_Client)
 
 void cMonster::TickPathFinding()
 {
-	const int PosX = (int)floor(GetPosX());
-	const int PosY = (int)floor(GetPosY());
-	const int PosZ = (int)floor(GetPosZ());
+	const int PosX = POSX_TOINT;
+	const int PosY = POSY_TOINT;
+	const int PosZ = POSZ_TOINT;
 
 	m_FinalDestination.y = (double)FindFirstNonAirBlockPosition(m_FinalDestination.x, m_FinalDestination.z);
 
@@ -148,13 +148,27 @@ void cMonster::TickPathFinding()
 		BLOCKTYPE BlockAtY = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY, gCrossCoords[i].z + PosZ);
 		BLOCKTYPE BlockAtYP = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY + 1, gCrossCoords[i].z + PosZ);
 		BLOCKTYPE BlockAtYPP = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY + 2, gCrossCoords[i].z + PosZ);
-		BLOCKTYPE BlockAtYM = m_World->GetBlock(gCrossCoords[i].x + PosX, PosY - 1, gCrossCoords[i].z + PosZ);
-
-		if ((!cBlockInfo::IsSolid(BlockAtY)) && (!cBlockInfo::IsSolid(BlockAtYP)) && (!IsBlockLava(BlockAtYM)) && (BlockAtY != E_BLOCK_FENCE) && (BlockAtY != E_BLOCK_FENCE_GATE))
+		int LowestY = FindFirstNonAirBlockPosition(gCrossCoords[i].x + PosX, gCrossCoords[i].z + PosZ);
+		BLOCKTYPE BlockAtLowestY = m_World->GetBlock(gCrossCoords[i].x + PosX, LowestY, gCrossCoords[i].z + PosZ);
+
+		if (
+			(!cBlockInfo::IsSolid(BlockAtY)) &&
+			(!cBlockInfo::IsSolid(BlockAtYP)) &&
+			(!IsBlockLava(BlockAtLowestY)) &&
+			(BlockAtLowestY != E_BLOCK_CACTUS) &&
+			(PosY - LowestY < FALL_DAMAGE_HEIGHT)
+			)
 		{
 			m_PotentialCoordinates.push_back(Vector3d((gCrossCoords[i].x + PosX), PosY, gCrossCoords[i].z + PosZ));
 		}
-		else if ((cBlockInfo::IsSolid(BlockAtY)) && (!cBlockInfo::IsSolid(BlockAtYP)) && (!cBlockInfo::IsSolid(BlockAtYPP)) && (!IsBlockLava(BlockAtYM)) && (BlockAtY != E_BLOCK_FENCE) && (BlockAtY != E_BLOCK_FENCE_GATE))
+		else if (
+			(cBlockInfo::IsSolid(BlockAtY)) &&
+			(BlockAtY != E_BLOCK_CACTUS) &&
+			(!cBlockInfo::IsSolid(BlockAtYP)) &&
+			(!cBlockInfo::IsSolid(BlockAtYPP)) &&
+			(BlockAtY != E_BLOCK_FENCE) &&
+			(BlockAtY != E_BLOCK_FENCE_GATE)
+			)
 		{
 			m_PotentialCoordinates.push_back(Vector3d((gCrossCoords[i].x + PosX), PosY + 1, gCrossCoords[i].z + PosZ));
 		}
@@ -402,7 +416,7 @@ void cMonster::HandleFalling()
 			GetWorld()->BroadcastSoundParticleEffect(2006, POSX_TOINT, POSY_TOINT - 1, POSZ_TOINT, Damage /* Used as particle effect speed modifier */);
 		}
 
-		m_LastGroundHeight = (int)floor(GetPosY());
+		m_LastGroundHeight = POSY_TOINT;
 	}
 }
 
@@ -411,7 +425,7 @@ void cMonster::HandleFalling()
 
 int cMonster::FindFirstNonAirBlockPosition(double a_PosX, double a_PosZ)
 {
-	int PosY = (int)floor(GetPosY());
+	int PosY = POSY_TOINT;
 
 	if (PosY < 0)
 		PosY = 0;
@@ -969,15 +983,15 @@ void cMonster::HandleDaylightBurning(cChunk & a_Chunk)
 		return;
 	}
 	
-	int RelY = (int)floor(GetPosY());
+	int RelY = POSY_TOINT;
 	if ((RelY < 0) || (RelY >= cChunkDef::Height))
 	{
 		// Outside the world
 		return;
 	}
 	
-	int RelX = (int)floor(GetPosX()) - GetChunkX() * cChunkDef::Width;
-	int RelZ = (int)floor(GetPosZ()) - GetChunkZ() * cChunkDef::Width;
+	int RelX = POSX_TOINT - GetChunkX() * cChunkDef::Width;
+	int RelZ = POSZ_TOINT - GetChunkZ() * cChunkDef::Width;
 
 	if (!a_Chunk.IsLightValid())
 	{
diff --git a/src/Mobs/Monster.h b/src/Mobs/Monster.h
index 776426a0d..70b3783fc 100644
--- a/src/Mobs/Monster.h
+++ b/src/Mobs/Monster.h
@@ -185,14 +185,14 @@ protected:
 	inline bool IsNextYPosReachable(int a_PosY)
 	{
 		return (
-			(a_PosY <= (int)floor(GetPosY())) ||
+			(a_PosY <= POSY_TOINT) ||
 			DoesPosYRequireJump(a_PosY)
 			);
 	}
 	/** Returns if a monster can reach a given height by jumping */
 	inline bool DoesPosYRequireJump(int a_PosY)
 	{
-		return ((a_PosY > (int)floor(GetPosY())) && (a_PosY == (int)floor(GetPosY()) + 1));
+		return ((a_PosY > POSY_TOINT) && (a_PosY == POSY_TOINT + 1));
 	}
 
 	/** A semi-temporary list to store the traversed coordinates during active pathfinding so we don't visit them again */
diff --git a/src/Mobs/Sheep.cpp b/src/Mobs/Sheep.cpp
index b3d4d93c1..5a6b760af 100644
--- a/src/Mobs/Sheep.cpp
+++ b/src/Mobs/Sheep.cpp
@@ -102,7 +102,7 @@ void cSheep::Tick(float a_Dt, cChunk & a_Chunk)
 		{
 			if (m_World->GetBlock(PosX, PosY, PosZ) == E_BLOCK_GRASS)
 			{
-				m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_SHEEP_EATING);
+				m_World->BroadcastEntityStatus(*this, esSheepEating);
 				m_TimeToStopEating = 40;
 			}
 		}
diff --git a/src/Mobs/Villager.cpp b/src/Mobs/Villager.cpp
index bbd8d6aaa..d049acc1e 100644
--- a/src/Mobs/Villager.cpp
+++ b/src/Mobs/Villager.cpp
@@ -30,7 +30,7 @@ void cVillager::DoTakeDamage(TakeDamageInfo & a_TDI)
 	{
 		if (m_World->GetTickRandomNumber(5) == 3)
 		{
-			m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_VILLAGER_ANGRY);
+			m_World->BroadcastEntityStatus(*this, esVillagerAngry);
 		}
 	}
 }
diff --git a/src/Mobs/Wolf.cpp b/src/Mobs/Wolf.cpp
index 0d3619166..f02b8a4fc 100644
--- a/src/Mobs/Wolf.cpp
+++ b/src/Mobs/Wolf.cpp
@@ -75,12 +75,12 @@ void cWolf::OnRightClicked(cPlayer & a_Player)
 				SetMaxHealth(20);
 				SetIsTame(true);
 				SetOwner(a_Player.GetName());
-				m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_WOLF_TAMED);
+				m_World->BroadcastEntityStatus(*this, esWolfTamed);
 				m_World->BroadcastParticleEffect("heart", (float) GetPosX(), (float) GetPosY(), (float) GetPosZ(), 0, 0, 0, 0, 5);
 			}
 			else
 			{
-				m_World->BroadcastEntityStatus(*this, ENTITY_STATUS_WOLF_TAMING);
+				m_World->BroadcastEntityStatus(*this, esWolfTaming);
 				m_World->BroadcastParticleEffect("smoke", (float) GetPosX(), (float) GetPosY(), (float) GetPosZ(), 0, 0, 0, 0, 5);
 			}
 		}
diff --git a/src/Protocol/Authenticator.cpp b/src/Protocol/Authenticator.cpp
new file mode 100644
index 000000000..e0fcc0007
--- /dev/null
+++ b/src/Protocol/Authenticator.cpp
@@ -0,0 +1,314 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Authenticator.h"
+#include "../OSSupport/BlockingTCPLink.h"
+#include "../Root.h"
+#include "../Server.h"
+#include "../ClientHandle.h"
+
+#include "inifile/iniFile.h"
+#include "json/json.h"
+
+#include "polarssl/config.h"
+#include "polarssl/net.h"
+#include "polarssl/ssl.h"
+#include "polarssl/entropy.h"
+#include "polarssl/ctr_drbg.h"
+#include "polarssl/error.h"
+#include "polarssl/certs.h"
+
+#include <sstream>
+#include <iomanip>
+
+
+
+
+
+#define DEFAULT_AUTH_SERVER "sessionserver.mojang.com"
+#define DEFAULT_AUTH_ADDRESS "/session/minecraft/hasJoined?username=%USERNAME%&serverId=%SERVERID%"
+
+
+
+
+
+cAuthenticator::cAuthenticator(void) :
+	super("cAuthenticator"),
+	m_Server(DEFAULT_AUTH_SERVER),
+	m_Address(DEFAULT_AUTH_ADDRESS),
+	m_ShouldAuthenticate(true)
+{
+}
+
+
+
+
+
+cAuthenticator::~cAuthenticator()
+{
+	Stop();
+}
+
+
+
+
+
+void cAuthenticator::ReadINI(cIniFile & IniFile)
+{
+	m_Server = IniFile.GetValueSet("Authentication", "Server", DEFAULT_AUTH_SERVER);
+	m_Address = IniFile.GetValueSet("Authentication", "Address", DEFAULT_AUTH_ADDRESS);
+	m_ShouldAuthenticate = IniFile.GetValueSetB("Authentication", "Authenticate", true);
+}
+
+
+
+
+
+void cAuthenticator::Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash)
+{
+	if (!m_ShouldAuthenticate)
+	{
+		cRoot::Get()->AuthenticateUser(a_ClientID, a_UserName, cClientHandle::GenerateOfflineUUID(a_UserName));
+		return;
+	}
+
+	cCSLock LOCK(m_CS);
+	m_Queue.push_back(cUser(a_ClientID, a_UserName, a_ServerHash));
+	m_QueueNonempty.Set();
+}
+
+
+
+
+
+void cAuthenticator::Start(cIniFile & IniFile)
+{
+	ReadINI(IniFile);
+	m_ShouldTerminate = false;
+	super::Start();
+}
+
+
+
+
+
+void cAuthenticator::Stop(void)
+{
+	m_ShouldTerminate = true;
+	m_QueueNonempty.Set();
+	Wait();
+}
+
+
+
+
+
+void cAuthenticator::Execute(void)
+{
+	for (;;)
+	{
+		cCSLock Lock(m_CS);
+		while (!m_ShouldTerminate && (m_Queue.size() == 0))
+		{
+			cCSUnlock Unlock(Lock);
+			m_QueueNonempty.Wait();
+		}
+		if (m_ShouldTerminate)
+		{
+			return;
+		}
+		ASSERT(!m_Queue.empty());
+
+		cAuthenticator::cUser & User = m_Queue.front();
+		int ClientID = User.m_ClientID;
+		AString UserName = User.m_Name;
+		AString ServerID = User.m_ServerID;
+		m_Queue.pop_front();
+		Lock.Unlock();
+
+		AString NewUserName = UserName;
+		AString UUID;
+		if (AuthWithYggdrasil(NewUserName, ServerID, UUID))
+		{
+			LOGINFO("User %s authenticated with UUID '%s'", NewUserName.c_str(), UUID.c_str());
+			cRoot::Get()->AuthenticateUser(ClientID, NewUserName, UUID);
+		}
+		else
+		{
+			cRoot::Get()->KickUser(ClientID, "Failed to authenticate account!");
+		}
+	}  // for (-ever)
+}
+
+
+
+
+
+bool cAuthenticator::AuthWithYggdrasil(AString & a_UserName, const AString & a_ServerId, AString & a_UUID)
+{
+	LOGD("Trying to auth user %s", a_UserName.c_str());
+	
+	int ret, server_fd = -1;
+	unsigned char buf[1024];
+	const char *pers = "cAuthenticator";
+
+	entropy_context entropy;
+	ctr_drbg_context ctr_drbg;
+	ssl_context ssl;
+	x509_crt cacert;
+
+	/* Initialize the RNG and the session data */
+	memset(&ssl, 0, sizeof(ssl_context));
+	x509_crt_init(&cacert);
+
+	entropy_init(&entropy);
+	if ((ret = ctr_drbg_init(&ctr_drbg, entropy_func, &entropy, (const unsigned char *)pers, strlen(pers))) != 0)
+	{
+		LOGWARNING("cAuthenticator: ctr_drbg_init returned %d", ret);
+		return false;
+	}
+
+	/* Initialize certificates */
+	// TODO: Grab the sessionserver's root CA and any intermediates and hard-code them here, instead of test_ca_list
+	ret = x509_crt_parse(&cacert, (const unsigned char *)test_ca_list, strlen(test_ca_list));
+
+	if (ret < 0)
+	{
+		LOGWARNING("cAuthenticator: x509_crt_parse returned -0x%x", -ret);
+		return false;
+	}
+
+	/* Connect */
+	if ((ret = net_connect(&server_fd, m_Server.c_str(), 443)) != 0)
+	{
+		LOGWARNING("cAuthenticator: Can't connect to %s: %d", m_Server.c_str(), ret);
+		return false;
+	}
+
+	/* Setup */
+	if ((ret = ssl_init(&ssl)) != 0)
+	{
+		LOGWARNING("cAuthenticator: ssl_init returned %d", ret);
+		return false;
+	}
+	ssl_set_endpoint(&ssl, SSL_IS_CLIENT);
+	ssl_set_authmode(&ssl, SSL_VERIFY_OPTIONAL);
+	ssl_set_ca_chain(&ssl, &cacert, NULL, "PolarSSL Server 1");
+	ssl_set_rng(&ssl, ctr_drbg_random, &ctr_drbg);
+	ssl_set_bio(&ssl, net_recv, &server_fd, net_send, &server_fd);
+
+	/* Handshake */
+	while ((ret = ssl_handshake(&ssl)) != 0)
+	{
+		if ((ret != POLARSSL_ERR_NET_WANT_READ) && (ret != POLARSSL_ERR_NET_WANT_WRITE))
+		{
+			LOGWARNING("cAuthenticator: ssl_handshake returned -0x%x", -ret);
+			return false;
+		}
+	}
+
+	/* Write the GET request */
+	AString ActualAddress = m_Address;
+	ReplaceString(ActualAddress, "%USERNAME%", a_UserName);
+	ReplaceString(ActualAddress, "%SERVERID%", a_ServerId);
+
+	AString Request;
+	Request += "GET " + ActualAddress + " HTTP/1.1\r\n";
+	Request += "Host: " + m_Server + "\r\n";
+	Request += "User-Agent: MCServer\r\n";
+	Request += "Connection: close\r\n";
+	Request += "\r\n";
+
+	ret = ssl_write(&ssl, (const unsigned char *)Request.c_str(), Request.size());
+	if (ret <= 0)
+	{
+		LOGWARNING("cAuthenticator: ssl_write returned %d", ret);
+		return false;
+	}
+
+	/* Read the HTTP response */
+	std::string Response;
+	for (;;)
+	{
+		memset(buf, 0, sizeof(buf));
+		ret = ssl_read(&ssl, buf, sizeof(buf));
+
+		if ((ret == POLARSSL_ERR_NET_WANT_READ) || (ret == POLARSSL_ERR_NET_WANT_WRITE))
+		{
+			continue;
+		}
+		if (ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
+		{
+			break;
+		}
+		if (ret < 0)
+		{
+			LOGWARNING("cAuthenticator: ssl_read returned %d", ret);
+			break;
+		}
+		if (ret == 0)
+		{
+			LOGWARNING("cAuthenticator: EOF");
+			break;
+		}
+
+		Response.append((const char *)buf, ret);
+	} 
+
+	ssl_close_notify(&ssl);
+	x509_crt_free(&cacert);
+	net_close(server_fd);
+	ssl_free(&ssl);
+	entropy_free(&entropy);
+	memset(&ssl, 0, sizeof(ssl));
+
+	// Check the HTTP status line:
+	AString prefix("HTTP/1.1 200 OK");
+	AString HexDump;
+	if (Response.compare(0, prefix.size(), prefix))
+	{
+		LOGINFO("User \"%s\" failed to auth, bad http status line received", a_UserName.c_str());
+		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
+		return false;
+	}
+
+	// Erase the HTTP headers from the response:
+	size_t idxHeadersEnd = Response.find("\r\n\r\n");
+	if (idxHeadersEnd == AString::npos)
+	{
+		LOGINFO("User \"%s\" failed to authenticate, bad http response header received", a_UserName.c_str());
+		LOG("Response: \n%s", CreateHexDump(HexDump, Response.data(), Response.size(), 16).c_str());
+		return false;
+	}
+	Response.erase(0, idxHeadersEnd + 4);
+
+	// Parse the Json response:
+	if (Response.empty())
+	{
+		return false;
+	}
+	Json::Value root;
+	Json::Reader reader;
+	if (!reader.parse(Response, root, false))
+	{
+		LOGWARNING("cAuthenticator: Cannot parse Received Data to json!");
+		return false;
+	}
+	a_UserName = root.get("name", "Unknown").asString();
+	a_UUID = root.get("id", "").asString();
+	
+	// If the UUID doesn't contain the hashes, insert them at the proper places:
+	if (a_UUID.size() == 32)
+	{
+		a_UUID.insert(8, "-");
+		a_UUID.insert(13, "-");
+		a_UUID.insert(18, "-");
+		a_UUID.insert(23, "-");
+	}
+	return true;
+}
+
+
+
+
+
diff --git a/src/Authenticator.h b/src/Protocol/Authenticator.h
index 02cd6f4c5..211f51394 100644
--- a/src/Authenticator.h
+++ b/src/Protocol/Authenticator.h
@@ -14,7 +14,7 @@
 #ifndef CAUTHENTICATOR_H_INCLUDED
 #define CAUTHENTICATOR_H_INCLUDED
 
-#include "OSSupport/IsThread.h"
+#include "../OSSupport/IsThread.h"
 
 
 
@@ -31,23 +31,23 @@ class cAuthenticator :
 	public cIsThread
 {
 	typedef cIsThread super;
-	
+
 public:
 	cAuthenticator(void);
 	~cAuthenticator();
 
-	/// (Re-)read server and address from INI:
+	/** (Re-)read server and address from INI: */
 	void ReadINI(cIniFile & IniFile);
 
-	/// Queues a request for authenticating a user. If the auth fails, the user is kicked
+	/** Queues a request for authenticating a user. If the auth fails, the user will be kicked */
 	void Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash);
 
-	/// Starts the authenticator thread. The thread may be started and stopped repeatedly
+	/** Starts the authenticator thread. The thread may be started and stopped repeatedly */
 	void Start(cIniFile & IniFile);
-	
-	/// Stops the authenticator thread. The thread may be started and stopped repeatedly
+
+	/** Stops the authenticator thread. The thread may be started and stopped repeatedly */
 	void Stop(void);
-	
+
 private:
 
 	class cUser
@@ -56,30 +56,30 @@ private:
 		int     m_ClientID;
 		AString m_Name;
 		AString m_ServerID;
-		
+
 		cUser(int a_ClientID, const AString & a_Name, const AString & a_ServerID) :
 			m_ClientID(a_ClientID),
 			m_Name(a_Name),
 			m_ServerID(a_ServerID)
 		{
 		}
-	} ;
-	
+	};
+
 	typedef std::deque<cUser> cUserList;
-	
+
 	cCriticalSection m_CS;
 	cUserList        m_Queue;
 	cEvent           m_QueueNonempty;
-	
+
 	AString m_Server;
 	AString m_Address;
 	bool    m_ShouldAuthenticate;
-	
-	// cIsThread override:
+
+	/** cIsThread override: */
 	virtual void Execute(void) override;
-	
-	// Returns true if the user authenticated okay, false on error; iLevel is the recursion deptht (bails out if too deep)
-	bool AuthFromAddress(const AString & a_Server, const AString & a_Address, const AString & a_UserName, int a_Level = 1);
+
+	/** Returns true if the user authenticated okay, false on error; iLevel is the recursion deptht (bails out if too deep) */
+	bool AuthWithYggdrasil(AString & a_UserName, const AString & a_ServerId, AString & a_UUID);
 };
 
 
diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index 939170f0e..2fbeef0fa 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -83,6 +83,7 @@ public:
 	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) = 0;
 	virtual void SendKeepAlive           (int a_PingID) = 0;
 	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) = 0;
+	virtual void SendLoginSuccess        (void) = 0;
 	virtual void SendMapColumn           (int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length) = 0;
 	virtual void SendMapDecorators       (int a_ID, const cMapDecoratorList & a_Decorators) = 0;
 	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) = 0;
diff --git a/src/Protocol/Protocol125.cpp b/src/Protocol/Protocol125.cpp
index 7ae359e10..b0ace7a7a 100644
--- a/src/Protocol/Protocol125.cpp
+++ b/src/Protocol/Protocol125.cpp
@@ -595,6 +595,15 @@ void cProtocol125::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 
 
 
+void cProtocol125::SendLoginSuccess(void)
+{
+	// Not supported in this protocol version
+}
+
+
+
+
+
 void cProtocol125::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
 	cCSLock Lock(m_CSPacket);
@@ -643,6 +652,17 @@ void cProtocol125::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 
 
+void cProtocol125::SendMapInfo(int a_ID, unsigned int a_Scale)
+{
+	// This protocol doesn't support such message
+	UNUSED(a_ID);
+	UNUSED(a_Scale);
+}
+
+
+
+
+
 void cProtocol125::SendPickupSpawn(const cPickup & a_Pickup)
 {
 	cCSLock Lock(m_CSPacket);
@@ -685,6 +705,16 @@ void cProtocol125::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 
 
 
+void cProtocol125::SendPaintingSpawn(const cPainting & a_Painting)
+{
+	// Not implemented in this protocol version
+	UNUSED(a_Painting);
+}
+
+
+
+
+
 void cProtocol125::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 {
 	cCSLock Lock(m_CSPacket);
@@ -846,6 +876,18 @@ void cProtocol125::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 
 
 
+void cProtocol125::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
+{
+	// This protocol version doesn't support such message
+	UNUSED(a_Name);
+	UNUSED(a_DisplayName);
+	UNUSED(a_Mode);
+}
+
+
+
+
+
 void cProtocol125::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
 {
 	// Not needed in this protocol version
diff --git a/src/Protocol/Protocol125.h b/src/Protocol/Protocol125.h
index 08d3ebbe9..16f31bd0e 100644
--- a/src/Protocol/Protocol125.h
+++ b/src/Protocol/Protocol125.h
@@ -56,19 +56,12 @@ public:
 	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
 	virtual void SendKeepAlive           (int a_PingID) override;
 	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendLoginSuccess        (void) 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
-		UNUSED(a_ID);
-		UNUSED(a_Scale);
-	} 
+	virtual void SendMapInfo             (int a_ID, unsigned int a_Scale) 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 SendPaintingSpawn       (const cPainting & a_Painting) override 
-	{
-		UNUSED(a_Painting);
-	};
+	virtual void SendPaintingSpawn       (const cPainting & a_Painting) override;
 	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;
@@ -82,12 +75,7 @@ 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 
-	{
-		UNUSED(a_Name);
-		UNUSED(a_DisplayName);
-		UNUSED(a_Mode);
-	} // This protocol doesn't support such message
+	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 {} // 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/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 135518b67..ec9a9b4c5 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -88,8 +88,9 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 	// Create the comm log file, if so requested:
 	if (g_ShouldLogCommIn || g_ShouldLogCommOut)
 	{
+		static int sCounter = 0;
 		cFile::CreateFolder("CommLogs");
-		AString FileName = Printf("CommLogs/%x__%s.log", (unsigned)time(NULL), a_Client->GetIPString().c_str());
+		AString FileName = Printf("CommLogs/%x_%d__%s.log", (unsigned)time(NULL), sCounter++, a_Client->GetIPString().c_str());
 		m_CommLogFile.Open(FileName, cFile::fmWrite);
 	}
 }
@@ -124,6 +125,8 @@ void cProtocol172::DataReceived(const char * a_Data, size_t a_Size)
 
 void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1b);  // Attach Entity packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteInt((a_Vehicle != NULL) ? a_Vehicle->GetUniqueID() : 0);
@@ -136,6 +139,8 @@ void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_
 
 void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x24);  // Block Action packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteShort(a_BlockY);
@@ -151,6 +156,8 @@ void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 
 void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x25);  // Block Break Animation packet
 	Pkt.WriteVarInt(a_EntityID);
 	Pkt.WriteInt(a_BlockX);
@@ -165,6 +172,8 @@ void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY
 
 void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x23);  // Block Change packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteByte(a_BlockY);
@@ -179,6 +188,8 @@ void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 
 void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x22);  // Multi Block Change packet
 	Pkt.WriteInt(a_ChunkX);
 	Pkt.WriteInt(a_ChunkZ);
@@ -198,6 +209,8 @@ void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockV
 
 void cProtocol172::SendChat(const AString & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x02);  // Chat Message packet
 	Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()));
 }
@@ -208,6 +221,8 @@ void cProtocol172::SendChat(const AString & a_Message)
 
 void cProtocol172::SendChat(const cCompositeChat & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Compose the complete Json string to send:
 	Json::Value msg;
 	msg["text"] = "";  // The client crashes without this
@@ -280,6 +295,8 @@ void cProtocol172::SendChat(const cCompositeChat & a_Message)
 
 void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Serialize first, before creating the Packetizer (the packetizer locks a CS)
 	// This contains the flags and bitmasks, too
 	const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2);
@@ -296,6 +313,8 @@ void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerialize
 
 void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0d);  // Collect Item packet
 	Pkt.WriteInt(a_Pickup.GetUniqueID());
 	Pkt.WriteInt(a_Player.GetUniqueID());
@@ -307,6 +326,8 @@ void cProtocol172::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a
 
 void cProtocol172::SendDestroyEntity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x13);  // Destroy Entities packet
 	Pkt.WriteByte(1);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
@@ -343,6 +364,8 @@ void cProtocol172::SendDisconnect(const AString & a_Reason)
 
 void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x36);  // Sign Editor Open packet
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteInt(a_BlockY);
@@ -355,6 +378,8 @@ void cProtocol172::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, short a_Duration)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1D);  // Entity Effect packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_EffectID);
@@ -368,6 +393,8 @@ void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, in
 
 void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x04);  // Entity Equipment packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteShort(a_SlotNum);
@@ -380,6 +407,8 @@ void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum
 
 void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x19);  // Entity Head Look packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetHeadYaw());
@@ -391,6 +420,8 @@ void cProtocol172::SendEntityHeadLook(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityLook(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x16);  // Entity Look packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
@@ -403,6 +434,8 @@ void cProtocol172::SendEntityLook(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityMetadata(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1c);  // Entity Metadata packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteEntityMetadata(a_Entity);
@@ -415,6 +448,8 @@ void cProtocol172::SendEntityMetadata(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityProperties(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteEntityProperties(a_Entity);
@@ -426,6 +461,8 @@ void cProtocol172::SendEntityProperties(const cEntity & a_Entity)
 
 void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x15);  // Entity Relative Move packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_RelX);
@@ -439,6 +476,8 @@ void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char
 
 void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x17);  // Entity Look And Relative Move packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_RelX);
@@ -454,6 +493,8 @@ void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX,
 
 void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x1a);  // Entity Status packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteChar(a_Status);
@@ -465,6 +506,8 @@ void cProtocol172::SendEntityStatus(const cEntity & a_Entity, char a_Status)
 
 void cProtocol172::SendEntityVelocity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x12);  // Entity Velocity packet
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	// 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick
@@ -479,6 +522,8 @@ void cProtocol172::SendEntityVelocity(const cEntity & a_Entity)
 
 void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x27);  // Explosion packet
 	Pkt.WriteFloat((float)a_BlockX);
 	Pkt.WriteFloat((float)a_BlockY);
@@ -502,6 +547,8 @@ void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_Bloc
 
 void cProtocol172::SendGameMode(eGameMode a_GameMode)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
 	Pkt.WriteByte(3);  // Reason: Change game mode
 	Pkt.WriteFloat((float)a_GameMode);
@@ -513,6 +560,8 @@ void cProtocol172::SendGameMode(eGameMode a_GameMode)
 
 void cProtocol172::SendHealth(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x06);  // Update Health packet
 	cPlayer * Player = m_Client->GetPlayer();
 	Pkt.WriteFloat((float)Player->GetHealth());
@@ -526,6 +575,8 @@ void cProtocol172::SendHealth(void)
 
 void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2f);  // Set Slot packet
 	Pkt.WriteChar(a_WindowID);
 	Pkt.WriteShort(a_SlotNum);
@@ -538,6 +589,13 @@ void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cIt
 
 void cProtocol172::SendKeepAlive(int a_PingID)
 {
+	// Drop the packet if the protocol is not in the Game state yet (caused a client crash):
+	if (m_State != 3)
+	{
+		LOGWARNING("Trying to send a KeepAlive packet to a player who's not yet fully logged in (%d). The protocol class prevented the packet.", m_State);
+		return;
+	}
+	
 	cPacketizer Pkt(*this, 0x00);  // Keep Alive packet
 	Pkt.WriteInt(a_PingID);
 }
@@ -575,8 +633,25 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 
 
 
+void cProtocol172::SendLoginSuccess(void)
+{
+	ASSERT(m_State == 2);  // State: login?
+	
+	cPacketizer Pkt(*this, 0x02);  // Login success packet
+	Pkt.WriteString(m_Client->GetUUID());
+	Pkt.WriteString(m_Client->GetUsername());
+
+	m_State = 3;  // State = Game
+}
+
+
+
+
+
 void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x10);  // Spawn Painting packet
 	Pkt.WriteVarInt(a_Painting.GetUniqueID());
 	Pkt.WriteString(a_Painting.GetName().c_str());
@@ -592,6 +667,8 @@ void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
 
 void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (3 + a_Length);
@@ -612,6 +689,8 @@ void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colo
 
 void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decorators)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (1 + (3 * a_Decorators.size()));
@@ -632,6 +711,8 @@ void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x34);
 	Pkt.WriteVarInt(a_ID);
 	Pkt.WriteShort (2);
@@ -647,6 +728,8 @@ void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
 
 void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	{
 		cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
 		Pkt.WriteVarInt(a_Pickup.GetUniqueID());
@@ -673,6 +756,8 @@ void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
 
 void cProtocol172::SendPlayerAbilities(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x39);  // Player Abilities packet
 	Byte Flags = 0;
 	cPlayer * Player = m_Client->GetPlayer();
@@ -700,6 +785,8 @@ void cProtocol172::SendPlayerAbilities(void)
 
 void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animation)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0b);  // Animation packet
 	Pkt.WriteVarInt(a_Entity.GetUniqueID());
 	Pkt.WriteChar(a_Animation);
@@ -711,6 +798,8 @@ void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animatio
 
 void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmmount)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2A);
 	Pkt.WriteString(a_ParticleName);
 	Pkt.WriteFloat(a_SrcX);
@@ -729,6 +818,8 @@ void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 
 void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteBool(a_IsOnline);
@@ -741,6 +832,8 @@ void cProtocol172::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
 
 void cProtocol172::SendPlayerMaxSpeed(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties
 	cPlayer * Player = m_Client->GetPlayer();
 	Pkt.WriteInt(Player->GetUniqueID());
@@ -768,6 +861,8 @@ void cProtocol172::SendPlayerMaxSpeed(void)
 
 void cProtocol172::SendPlayerMoveLook(void)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x08);  // Player Position And Look packet
 	cPlayer * Player = m_Client->GetPlayer();
 	Pkt.WriteDouble(Player->GetPosX());
@@ -798,10 +893,12 @@ void cProtocol172::SendPlayerPosition(void)
 
 void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	// Called to spawn another player for the client
 	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
 	Pkt.WriteVarInt(a_Player.GetUniqueID());
-	Pkt.WriteString(Printf("%d", a_Player.GetUniqueID()));  // TODO: Proper UUID
+	Pkt.WriteString(a_Player.GetClientHandle()->GetUUID());
 	Pkt.WriteString(a_Player.GetName());
 	Pkt.WriteFPInt(a_Player.GetPosX());
 	Pkt.WriteFPInt(a_Player.GetPosY());
@@ -821,6 +918,8 @@ void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 
 void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString & a_Message)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x3f);
 	Pkt.WriteString(a_Channel);
 	Pkt.WriteShort((short)a_Message.size());
@@ -833,7 +932,9 @@ void cProtocol172::SendPluginMessage(const AString & a_Channel, const AString &
 
 void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID)
 {
-	cPacketizer Pkt(*this, 0x1E);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x1e);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_EffectID);
 }
@@ -858,7 +959,9 @@ void cProtocol172::SendRespawn(void)
 
 void cProtocol172::SendExperience (void)
 {
-	cPacketizer Pkt(*this, 0x1F); //Experience Packet
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x1f);  // Experience Packet
 	cPlayer * Player = m_Client->GetPlayer();
 	Pkt.WriteFloat(Player->GetXpPercentage());
 	Pkt.WriteShort(Player->GetXpLevel());
@@ -871,6 +974,8 @@ void cProtocol172::SendExperience (void)
 
 void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x11);	
 	Pkt.WriteVarInt(a_ExpOrb.GetUniqueID());
 	Pkt.WriteInt((int) a_ExpOrb.GetPosX());
@@ -885,7 +990,9 @@ 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);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3b);
 	Pkt.WriteString(a_Name);
 	Pkt.WriteString(a_DisplayName);
 	Pkt.WriteByte(a_Mode);
@@ -897,7 +1004,9 @@ void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString
 
 void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
 {
-	cPacketizer Pkt(*this, 0x3C);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3c);
 	Pkt.WriteString(a_Player);
 	Pkt.WriteByte(a_Mode);
 
@@ -914,7 +1023,9 @@ void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString &
 
 void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
 {
-	cPacketizer Pkt(*this, 0x3D);
+	ASSERT(m_State == 3);  // In game mode?
+	
+	cPacketizer Pkt(*this, 0x3d);
 	Pkt.WriteByte((int) a_Display);
 	Pkt.WriteString(a_Objective);
 }
@@ -925,6 +1036,8 @@ void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard
 
 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
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x29);  // Sound Effect packet
 	Pkt.WriteString(a_SoundName);
 	Pkt.WriteInt(a_SrcX);
@@ -940,6 +1053,8 @@ void cProtocol172::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int
 
 void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x28);  // Effect packet
 	Pkt.WriteInt(a_EffectID);
 	Pkt.WriteInt(a_SrcX);
@@ -955,6 +1070,8 @@ void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 
 void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
 	Pkt.WriteVarInt(a_FallingBlock.GetUniqueID());
 	Pkt.WriteByte(70);  // Falling block
@@ -975,6 +1092,8 @@ void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
 
 void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0f);  // Spawn Mob packet
 	Pkt.WriteVarInt(a_Mob.GetUniqueID());
 	Pkt.WriteByte((Byte)a_Mob.GetMobType());
@@ -997,6 +1116,8 @@ void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
 
 void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
 	Pkt.WriteVarInt(a_Entity.GetUniqueID());
 	Pkt.WriteByte(a_ObjectType);
@@ -1020,6 +1141,8 @@ void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 
 void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
 	Pkt.WriteVarInt(a_Vehicle.GetUniqueID());
 	Pkt.WriteByte(a_VehicleType);
@@ -1043,6 +1166,8 @@ void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 
 void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x3a);  // Tab-Complete packet
 	Pkt.WriteVarInt(a_Results.size());
 
@@ -1058,6 +1183,8 @@ void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
 
 void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x18);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteFPInt(a_Entity.GetPosX());
@@ -1073,6 +1200,8 @@ void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
 
 void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2c);  // Spawn Global Entity packet
 	Pkt.WriteVarInt(0);  // EntityID = 0, always
 	Pkt.WriteByte(1);  // Type = Thunderbolt
@@ -1087,6 +1216,8 @@ void cProtocol172::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x03);
 	Pkt.WriteInt64(a_WorldAge);
 	Pkt.WriteInt64(a_TimeOfDay);
@@ -1098,6 +1229,8 @@ void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
 
 void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x21);  // Chunk Data packet
 	Pkt.WriteInt(a_ChunkX);
 	Pkt.WriteInt(a_ChunkZ);
@@ -1112,6 +1245,8 @@ void cProtocol172::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
 
 void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x35);  // Update tile entity packet
 	Pkt.WriteInt(a_BlockEntity.GetPosX());
 	Pkt.WriteShort(a_BlockEntity.GetPosY());
@@ -1137,6 +1272,8 @@ void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 
 void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x33);
 	Pkt.WriteInt(a_BlockX);
 	Pkt.WriteShort((short)a_BlockY);
@@ -1154,6 +1291,8 @@ void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, cons
 
 void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x0a);
 	Pkt.WriteInt(a_Entity.GetUniqueID());
 	Pkt.WriteInt(a_BlockX);
@@ -1167,6 +1306,8 @@ void cProtocol172::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_Bloc
 
 void cProtocol172::SendWeather(eWeather a_Weather)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	{
 		cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
 		Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
@@ -1182,6 +1323,8 @@ void cProtocol172::SendWeather(eWeather a_Weather)
 
 void cProtocol172::SendWholeInventory(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x30);  // Window Items packet
 	Pkt.WriteChar(a_Window.GetWindowID());
 	Pkt.WriteShort(a_Window.GetNumSlots());
@@ -1199,6 +1342,8 @@ void cProtocol172::SendWholeInventory(const cWindow & a_Window)
 
 void cProtocol172::SendWindowClose(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x2e);
 	Pkt.WriteChar(a_Window.GetWindowID());
 }
@@ -1209,6 +1354,8 @@ void cProtocol172::SendWindowClose(const cWindow & a_Window)
 
 void cProtocol172::SendWindowOpen(const cWindow & a_Window)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	if (a_Window.GetWindowType() < 0)
 	{
 		// Do not send this packet for player inventory windows
@@ -1233,6 +1380,8 @@ void cProtocol172::SendWindowOpen(const cWindow & a_Window)
 
 void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
 {
+	ASSERT(m_State == 3);  // In game mode?
+	
 	cPacketizer Pkt(*this, 0x31);  // Window Property packet
 	Pkt.WriteChar(a_Window.GetWindowID());
 	Pkt.WriteShort(a_Property);
@@ -1563,15 +1712,6 @@ void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffe
 	}
 	
 	StartEncryption(DecryptedKey);
-
-	// Send login success:
-	{
-		cPacketizer Pkt(*this, 0x02);  // Login success packet
-		Pkt.WriteString(Printf("%d", m_Client->GetUniqueID()));  // TODO: proper UUID
-		Pkt.WriteString(m_Client->GetUsername());
-	}
-
-	m_State = 3;  // State = Game
 	m_Client->HandleLogin(4, m_Client->GetUsername());
 }
 
@@ -1605,14 +1745,6 @@ void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 		return;
 	}
 	
-	// Send login success:
-	{
-		cPacketizer Pkt(*this, 0x02);  // Login success packet
-		Pkt.WriteString(Printf("%d", m_Client->GetUniqueID()));  // TODO: proper UUID
-		Pkt.WriteString(Username);
-	}
-
-	m_State = 3;  // State = Game
 	m_Client->HandleLogin(4, Username);
 }
 
@@ -2766,3 +2898,64 @@ void cProtocol172::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
 
 
 
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cProtocol176:
+
+cProtocol176::cProtocol176(cClientHandle * a_Client, const AString &a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
+	super(a_Client, a_ServerAddress, a_ServerPort, a_State)
+{
+}
+
+
+
+
+
+void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
+{
+	// Called to spawn another player for the client
+	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
+	Pkt.WriteVarInt(a_Player.GetUniqueID());
+	Pkt.WriteString(a_Player.GetClientHandle()->GetUUID());
+	Pkt.WriteString(a_Player.GetName());
+	Pkt.WriteVarInt(0);  // We have no data to send here
+	Pkt.WriteFPInt(a_Player.GetPosX());
+	Pkt.WriteFPInt(a_Player.GetPosY());
+	Pkt.WriteFPInt(a_Player.GetPosZ());
+	Pkt.WriteByteAngle(a_Player.GetYaw());
+	Pkt.WriteByteAngle(a_Player.GetPitch());
+	short ItemType = a_Player.GetEquippedItem().IsEmpty() ? 0 : a_Player.GetEquippedItem().m_ItemType;
+	Pkt.WriteShort(ItemType);
+	Pkt.WriteByte((3 << 5) | 6);  // Metadata: float + index 6
+	Pkt.WriteFloat((float)a_Player.GetHealth());
+	Pkt.WriteByte(0x7f);  // Metadata: end
+}
+
+
+
+
+
+void cProtocol176::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
+{
+	// Send the response:
+	AString Response = "{\"version\":{\"name\":\"1.7.6\",\"protocol\":5},\"players\":{";
+	AppendPrintf(Response, "\"max\":%u,\"online\":%u,\"sample\":[]},",
+		cRoot::Get()->GetServer()->GetMaxPlayers(),
+		cRoot::Get()->GetServer()->GetNumPlayers()
+	);
+	AppendPrintf(Response, "\"description\":{\"text\":\"%s\"},",
+		cRoot::Get()->GetServer()->GetDescription().c_str()
+	);
+	AppendPrintf(Response, "\"favicon\":\"data:image/png;base64,%s\"",
+		cRoot::Get()->GetServer()->GetFaviconData().c_str()
+	);
+	Response.append("}");
+	
+	cPacketizer Pkt(*this, 0x00);  // Response packet
+	Pkt.WriteString(Response);
+}
+
+
+
+
+
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index 91186b270..5cafc4722 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -87,6 +87,7 @@ public:
 	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
 	virtual void SendKeepAlive           (int a_PingID) override;
 	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendLoginSuccess        (void) 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;
@@ -252,7 +253,7 @@ protected:
 	
 	// Packet handlers while in the Status state (m_State == 1):
 	void HandlePacketStatusPing   (cByteBuffer & a_ByteBuffer);
-	void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer);
+	virtual void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer);
 	
 	// Packet handlers while in the Login state (m_State == 2):
 	void HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffer);
@@ -306,3 +307,22 @@ protected:
 
 
 
+
+/** The version 5 lengthed protocol, used by 1.7.6 through 1.7.9. */
+class cProtocol176 :
+	public cProtocol172
+{
+	typedef cProtocol172 super;
+	
+public:
+	cProtocol176(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State);
+	
+	// cProtocol172 overrides:
+	virtual void SendPlayerSpawn(const cPlayer & a_Player) override;
+	virtual void HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer) override;
+
+} ;
+
+
+
+
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index f9a7ba92b..2ccb9f197 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -59,6 +59,7 @@ AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
 		case PROTO_VERSION_1_6_3: return "1.6.3";
 		case PROTO_VERSION_1_6_4: return "1.6.4";
 		case PROTO_VERSION_1_7_2: return "1.7.2";
+		case PROTO_VERSION_1_7_6: return "1.7.6";
 	}
 	ASSERT(!"Unknown protocol version");
 	return Printf("Unknown protocol (%d)", a_ProtocolVersion);
@@ -396,6 +397,16 @@ void cProtocolRecognizer::SendLogin(const cPlayer & a_Player, const cWorld & a_W
 
 
 
+void cProtocolRecognizer::SendLoginSuccess(void)
+{
+	ASSERT(m_Protocol != NULL);
+	m_Protocol->SendLoginSuccess();
+}
+
+
+
+
+
 void cProtocolRecognizer::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length)
 {
 	ASSERT(m_Protocol != NULL);
@@ -965,6 +976,18 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 			m_Protocol = new cProtocol172(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
 			return true;
 		}
+		case PROTO_VERSION_1_7_6:
+		{
+			AString ServerAddress;
+			short ServerPort;
+			UInt32 NextState;
+			m_Buffer.ReadVarUTF8String(ServerAddress);
+			m_Buffer.ReadBEShort(ServerPort);
+			m_Buffer.ReadVarInt(NextState);
+			m_Buffer.CommitRead();
+			m_Protocol = new cProtocol176(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
+			return true;
+		}
 	}
 	LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u)",
 		m_Client->GetIPString().c_str(), ProtocolVersion
diff --git a/src/Protocol/ProtocolRecognizer.h b/src/Protocol/ProtocolRecognizer.h
index 072d7c2d2..408109ef4 100644
--- a/src/Protocol/ProtocolRecognizer.h
+++ b/src/Protocol/ProtocolRecognizer.h
@@ -18,8 +18,8 @@
 
 
 // Adjust these if a new protocol is added or an old one is removed:
-#define MCS_CLIENT_VERSIONS "1.2.4, 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.5, 1.5.1, 1.5.2, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.7.2, 1.7.4"
-#define MCS_PROTOCOL_VERSIONS "29, 39, 47, 49, 51, 60, 61, 73, 74, 77, 78, 4"
+#define MCS_CLIENT_VERSIONS "1.2.4, 1.2.5, 1.3.1, 1.3.2, 1.4.2, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.5, 1.5.1, 1.5.2, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.7.2, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9"
+#define MCS_PROTOCOL_VERSIONS "29, 39, 47, 49, 51, 60, 61, 73, 74, 77, 78, 4, 5"
 
 
 
@@ -50,6 +50,7 @@ public:
 
 		// These will be kept "under" the next / latest, because the next and latest are only needed for previous protocols
 		PROTO_VERSION_1_7_2 = 4,
+		PROTO_VERSION_1_7_6 = 5,
 	} ;
 
 	cProtocolRecognizer(cClientHandle * a_Client);
@@ -90,6 +91,7 @@ public:
 	virtual void SendInventorySlot       (char a_WindowID, short a_SlotNum, const cItem & a_Item) override;
 	virtual void SendKeepAlive           (int a_PingID) override;
 	virtual void SendLogin               (const cPlayer & a_Player, const cWorld & a_World) override;
+	virtual void SendLoginSuccess        (void) 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;
diff --git a/src/Root.cpp b/src/Root.cpp
index ba4398b35..5d32bdd87 100644
--- a/src/Root.cpp
+++ b/src/Root.cpp
@@ -499,9 +499,9 @@ void cRoot::KickUser(int a_ClientID, const AString & a_Reason)
 
 
 
-void cRoot::AuthenticateUser(int a_ClientID)
+void cRoot::AuthenticateUser(int a_ClientID, const AString & a_Name, const AString & a_UUID)
 {
-	m_Server->AuthenticateUser(a_ClientID);
+	m_Server->AuthenticateUser(a_ClientID, a_Name, a_UUID);
 }
 
 
diff --git a/src/Root.h b/src/Root.h
index 4bbd7586f..d2a4d1eed 100644
--- a/src/Root.h
+++ b/src/Root.h
@@ -1,7 +1,7 @@
 
 #pragma once
 
-#include "Authenticator.h"
+#include "Protocol/Authenticator.h"
 #include "HTTPServer/HTTPServer.h"
 #include "Defines.h"
 
@@ -89,7 +89,7 @@ public:
 	void KickUser(int a_ClientID, const AString & a_Reason);
 	
 	/// Called by cAuthenticator to auth the specified user
-	void AuthenticateUser(int a_ClientID);
+	void AuthenticateUser(int a_ClientID, const AString & a_Name, const AString & a_UUID);
 	
 	/// Executes commands queued in the command queue
 	void TickCommands(void);
diff --git a/src/Server.cpp b/src/Server.cpp
index 4c2cd6803..fa4a1a133 100644
--- a/src/Server.cpp
+++ b/src/Server.cpp
@@ -615,14 +615,14 @@ void cServer::KickUser(int a_ClientID, const AString & a_Reason)
 
 
 
-void cServer::AuthenticateUser(int a_ClientID)
+void cServer::AuthenticateUser(int a_ClientID, const AString & a_Name, const AString & a_UUID)
 {
 	cCSLock Lock(m_CSClients);
 	for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
 	{
 		if ((*itr)->GetUniqueID() == a_ClientID)
 		{
-			(*itr)->Authenticate();
+			(*itr)->Authenticate(a_Name, a_UUID);
 			return;
 		}
 	}  // for itr - m_Clients[]
diff --git a/src/Server.h b/src/Server.h
index b5280c59d..b5c384a44 100644
--- a/src/Server.h
+++ b/src/Server.h
@@ -83,7 +83,7 @@ public:												// tolua_export
 	void Shutdown(void);
 
 	void KickUser(int a_ClientID, const AString & a_Reason);
-	void AuthenticateUser(int a_ClientID);  // Called by cAuthenticator to auth the specified user
+	void AuthenticateUser(int a_ClientID, const AString & a_Name, const AString & a_UUID);  // Called by cAuthenticator to auth the specified user
 
 	const AString & GetServerID(void) const { return m_ServerID; }  // tolua_export
 	
diff --git a/src/Simulator/IncrementalRedstoneSimulator.cpp b/src/Simulator/IncrementalRedstoneSimulator.cpp
index 50cac8d7e..d37d2eecf 100644
--- a/src/Simulator/IncrementalRedstoneSimulator.cpp
+++ b/src/Simulator/IncrementalRedstoneSimulator.cpp
@@ -69,18 +69,19 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 	// Checking only when a block is changed, as opposed to every tick, also improves performance
 
 	PoweredBlocksList * PoweredBlocks = a_Chunk->GetRedstoneSimulatorPoweredBlocksList();
-	for (PoweredBlocksList::iterator itr = PoweredBlocks->begin(); itr != PoweredBlocks->end(); ++itr)
+	for (PoweredBlocksList::iterator itr = PoweredBlocks->begin(); itr != PoweredBlocks->end();)
 	{
 		if (!itr->a_SourcePos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
+			++itr;
 			continue;
 		}
 
 		if (!IsPotentialSource(Block))
 		{
 			LOGD("cIncrementalRedstoneSimulator: Erased block @ {%i, %i, %i} from powered blocks list as it no longer connected to a source", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
-			PoweredBlocks->erase(itr);
-			break;
+			itr = PoweredBlocks->erase(itr);
+			continue;
 		}
 		else if (
 			// Changeable sources
@@ -93,9 +94,10 @@ void cIncrementalRedstoneSimulator::RedstoneAddBlock(int a_BlockX, int a_BlockY,
 			)
 		{
 			LOGD("cIncrementalRedstoneSimulator: Erased block @ {%i, %i, %i} from powered blocks list due to present/past metadata mismatch", itr->a_BlockPos.x, itr->a_BlockPos.y, itr->a_BlockPos.z);
-			PoweredBlocks->erase(itr);
-			break;
+			itr = PoweredBlocks->erase(itr);
+			continue;
 		}
+		++itr;
 	}
 
 	LinkedBlocksList * LinkedPoweredBlocks = a_Chunk->GetRedstoneSimulatorLinkedBlocksList();
@@ -532,128 +534,96 @@ void cIncrementalRedstoneSimulator::HandleRedstoneWire(int a_BlockX, int a_Block
 	};
 
 	// Check to see if directly beside a power source
-	if (IsWirePowered(a_BlockX, a_BlockY, a_BlockZ))
+	unsigned char MyPower;
+	if (!IsWirePowered(a_BlockX, a_BlockY, a_BlockZ, MyPower))
 	{
-		m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 15); // Maximum power
+		m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 0);
+		m_World.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
+		return;
 	}
-	else
+	
+	m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, MyPower);
+
+	if (MyPower < 1)
 	{
-		NIBBLETYPE MyMeta = m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
-		NIBBLETYPE MetaToSet = MyMeta;
-		int TimesMetaSmaller = 0, TimesFoundAWire = 0;
+		return;
+	}
+
+	MyPower--;
 
-		for (size_t i = 0; i < ARRAYCOUNT(gCrossCoords); i++) // Loop through all directions to transfer or receive power
+	for (size_t i = 0; i < ARRAYCOUNT(gCrossCoords); i++) // Loop through all directions to transfer or receive power
+	{
+		if ((i >= 4) && (i <= 7)) // If we are currently checking for wire surrounding ourself one block above...
 		{
-			if ((i >= 4) && (i <= 7)) // If we are currently checking for wire surrounding ourself one block above...
+			if (cBlockInfo::IsSolid(m_World.GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ))) // If there is something solid above us (wire cut off)...
 			{
-				if (cBlockInfo::IsSolid(m_World.GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ))) // If there is something solid above us (wire cut off)...
-				{
-					continue; // We don't receive power from that wire
-				}
+				continue; // We don't receive power from that wire
 			}
-			else if ((i >= 8) && (i <= 11)) // See above, but this is for wire below us
+		}
+		else if ((i >= 8) && (i <= 11)) // See above, but this is for wire below us
+		{
+			if (cBlockInfo::IsSolid(m_World.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ)))
 			{
-				if (cBlockInfo::IsSolid(m_World.GetBlock(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y + 1, a_BlockZ + gCrossCoords[i].z)))
-				{
-					continue;
-				}
+				continue;
 			}
-
-			BLOCKTYPE SurroundType;
-			NIBBLETYPE SurroundMeta;
-			m_World.GetBlockTypeMeta(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y, a_BlockZ + gCrossCoords[i].z, SurroundType, SurroundMeta);
-
-			if (SurroundType == E_BLOCK_REDSTONE_WIRE)
-			{
-				TimesFoundAWire++;
-
-				if (SurroundMeta > 1) // Wires of power 1 or 0 cannot transfer power TO ME, don't bother checking
-				{
-					// Does surrounding wire have a higher power level than the highest so far (MetaToSet)?
-					// >= to fix a bug where wires bordering each other with the same power level will appear (in terms of meta) to power each other, when they aren't actually in the powered list
-					if (SurroundMeta >= MetaToSet)
-					{
-						MetaToSet = SurroundMeta - 1; // To improve performance
-					}
-				}
-				
-				if (SurroundMeta < MyMeta) // Go through all surroundings to see if self power is larger than everyone else's
-				{
-					TimesMetaSmaller++;
-				}
-			}			
 		}
 
-		if ((TimesMetaSmaller == TimesFoundAWire) && (MyMeta != 0))
-		{
-			// All surrounding metas were smaller - self must have been a wire that was
-			// transferring power to other wires around.
-			// However, self not directly powered anymore, so source must have been removed,
-			// therefore, self must be set to meta zero
-			m_World.SetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, 0); // SetMeta & WakeUpSims doesn't seem to work here, so SetBlock
-			return; // No need to process block power sets because self not powered
-		}
-		else if (MyMeta != MetaToSet)
+		if (m_World.GetBlock(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y, a_BlockZ + gCrossCoords[i].z) == E_BLOCK_REDSTONE_WIRE)
 		{
-			m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, MetaToSet);
+			SetBlockPowered(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y, a_BlockZ + gCrossCoords[i].z, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
 		}
 	}
 
-	if (m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ) != 0) // A powered wire
+	for (size_t i = 0; i < ARRAYCOUNT(gSideCoords); i++) // Look for repeaters immediately surrounding self and try to power them
 	{
-		for (size_t i = 0; i < ARRAYCOUNT(gSideCoords); i++) // Look for repeaters immediately surrounding self and try to power them
+		if (m_World.GetBlock(a_BlockX + gSideCoords[i].x, a_BlockY + gSideCoords[i].y, a_BlockZ + gSideCoords[i].z) == E_BLOCK_REDSTONE_REPEATER_OFF)
 		{
-			if (m_World.GetBlock(a_BlockX + gSideCoords[i].x, a_BlockY + gSideCoords[i].y, a_BlockZ + gSideCoords[i].z) == E_BLOCK_REDSTONE_REPEATER_OFF)
-			{
-				SetBlockPowered(a_BlockX + gSideCoords[i].x, a_BlockY + gSideCoords[i].y, a_BlockZ + gSideCoords[i].z, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-			}
+			SetBlockPowered(a_BlockX + gSideCoords[i].x, a_BlockY + gSideCoords[i].y, a_BlockZ + gSideCoords[i].z, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
 		}
+	}
 
-		// Wire still powered, power blocks beneath
-		SetBlockPowered(a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-		SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_YM, E_BLOCK_REDSTONE_WIRE);
+	// Wire still powered, power blocks beneath
+	SetBlockPowered(a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+	SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_YM, E_BLOCK_REDSTONE_WIRE, MyPower);
 
-		switch (GetWireDirection(a_BlockX, a_BlockY, a_BlockZ))
+	switch (GetWireDirection(a_BlockX, a_BlockY, a_BlockZ))
+	{
+		case REDSTONE_NONE:
 		{
-			case REDSTONE_NONE:
-			{
-				SetBlockPowered(a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetBlockPowered(a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetBlockPowered(a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XM, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XP, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_YM, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZM, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZP, E_BLOCK_REDSTONE_WIRE);
-				break;
-			}
-			case REDSTONE_X_POS:
-			{
-				SetBlockPowered(a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XP, E_BLOCK_REDSTONE_WIRE);
-				break;
-			}
-			case REDSTONE_X_NEG:
-			{
-				SetBlockPowered(a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XM, E_BLOCK_REDSTONE_WIRE);
-				break;
-			}
-			case REDSTONE_Z_POS:
-			{
-				SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZP, E_BLOCK_REDSTONE_WIRE);
-				break;
-			}
-			case REDSTONE_Z_NEG:
-			{
-				SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE);
-				SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZM, E_BLOCK_REDSTONE_WIRE);
-				break;
-			}
+			SetBlockPowered(a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetBlockPowered(a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XM, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XP, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZM, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZP, E_BLOCK_REDSTONE_WIRE, MyPower);
+			break;
+		}
+		case REDSTONE_X_POS:
+		{
+			SetBlockPowered(a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XP, E_BLOCK_REDSTONE_WIRE, MyPower);
+			break;
+		}
+		case REDSTONE_X_NEG:
+		{
+			SetBlockPowered(a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_XM, E_BLOCK_REDSTONE_WIRE, MyPower);
+			break;
+		}
+		case REDSTONE_Z_POS:
+		{
+			SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZP, E_BLOCK_REDSTONE_WIRE, MyPower);
+			break;
+		}
+		case REDSTONE_Z_NEG:
+		{
+			SetBlockPowered(a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_REDSTONE_WIRE, MyPower);
+			SetDirectionLinkedPowered(a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_ZM, E_BLOCK_REDSTONE_WIRE, MyPower);
+			break;
 		}
 	}
 }
@@ -1046,16 +1016,146 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_BlockX, int a_Bloc
 			break;
 		}
 		case E_BLOCK_LIGHT_WEIGHTED_PRESSURE_PLATE:
+		{
+			class cPressurePlateCallback :
+				public cEntityCallback
+			{
+			public:
+				cPressurePlateCallback(int a_BlockX, int a_BlockY, int a_BlockZ) :
+					m_NumberOfEntities(0),
+					m_X(a_BlockX),
+					m_Y(a_BlockY),
+					m_Z(a_BlockZ)
+				{
+				}
+
+				virtual bool Item(cEntity * a_Entity) override
+				{
+					Vector3f EntityPos = a_Entity->GetPosition();
+					Vector3f BlockPos(m_X + 0.5f, (float)m_Y, m_Z + 0.5f);
+					double Distance = (EntityPos - BlockPos).Length();
+
+					if (Distance <= 0.7)
+					{
+						m_NumberOfEntities++;
+					}
+					return false;
+				}
+
+				bool GetPowerLevel(unsigned char & a_PowerLevel) const
+				{
+					a_PowerLevel = std::min(m_NumberOfEntities, MAX_POWER_LEVEL);
+					return (a_PowerLevel > 0);
+				}
+
+			protected:
+				int m_NumberOfEntities;
+
+				int m_X;
+				int m_Y;
+				int m_Z;
+			};
+
+			cPressurePlateCallback PressurePlateCallback(a_BlockX, a_BlockY, a_BlockZ);
+			m_World.ForEachEntity(PressurePlateCallback);
+
+			unsigned char Power;
+			NIBBLETYPE Meta = m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
+			if (PressurePlateCallback.GetPowerLevel(Power))
+			{
+				if (Meta == E_META_PRESSURE_PLATE_RAISED)
+				{
+					m_World.BroadcastSoundEffect("random.click", (int)((a_BlockX + 0.5) * 8.0), (int)((a_BlockY + 0.1) * 8.0), (int)((a_BlockZ + 0.5) * 8.0), 0.3F, 0.5F);
+				}
+				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_DEPRESSED);
+				SetAllDirsAsPowered(a_BlockX, a_BlockY, a_BlockZ, a_MyType, Power);
+			}
+			else
+			{
+				if (Meta == E_META_PRESSURE_PLATE_DEPRESSED)
+				{
+					m_World.BroadcastSoundEffect("random.click", (int)((a_BlockX + 0.5) * 8.0), (int)((a_BlockY + 0.1) * 8.0), (int)((a_BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
+				}
+				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_RAISED);
+				m_World.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
+			}
+
+			break;
+		}
 		case E_BLOCK_HEAVY_WEIGHTED_PRESSURE_PLATE:
+		{class cPressurePlateCallback :
+			public cEntityCallback
+		{
+		public:
+			cPressurePlateCallback(int a_BlockX, int a_BlockY, int a_BlockZ) :
+				m_NumberOfEntities(0),
+				m_X(a_BlockX),
+				m_Y(a_BlockY),
+				m_Z(a_BlockZ)
+			{
+			}
+
+			virtual bool Item(cEntity * a_Entity) override
+			{
+				Vector3f EntityPos = a_Entity->GetPosition();
+				Vector3f BlockPos(m_X + 0.5f, (float)m_Y, m_Z + 0.5f);
+				double Distance = (EntityPos - BlockPos).Length();
+
+				if (Distance <= 0.7)
+				{
+					m_NumberOfEntities++;
+				}
+				return false;
+			}
+
+			bool GetPowerLevel(unsigned char & a_PowerLevel) const
+			{
+				a_PowerLevel = std::min((int)ceil(m_NumberOfEntities / (float)10), MAX_POWER_LEVEL);
+				return (a_PowerLevel > 0);
+			}
+
+		protected:
+			int m_NumberOfEntities;
+
+			int m_X;
+			int m_Y;
+			int m_Z;
+		};
+
+		cPressurePlateCallback PressurePlateCallback(a_BlockX, a_BlockY, a_BlockZ);
+		m_World.ForEachEntity(PressurePlateCallback);
+
+		unsigned char Power;
+		NIBBLETYPE Meta = m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
+		if (PressurePlateCallback.GetPowerLevel(Power))
+		{
+			if (Meta == E_META_PRESSURE_PLATE_RAISED)
+			{
+				m_World.BroadcastSoundEffect("random.click", (int)((a_BlockX + 0.5) * 8.0), (int)((a_BlockY + 0.1) * 8.0), (int)((a_BlockZ + 0.5) * 8.0), 0.3F, 0.5F);
+			}
+			m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_DEPRESSED);
+			SetAllDirsAsPowered(a_BlockX, a_BlockY, a_BlockZ, a_MyType, Power);
+		}
+		else
+		{
+			if (Meta == E_META_PRESSURE_PLATE_DEPRESSED)
+			{
+				m_World.BroadcastSoundEffect("random.click", (int)((a_BlockX + 0.5) * 8.0), (int)((a_BlockY + 0.1) * 8.0), (int)((a_BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
+			}
+			m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_RAISED);
+			m_World.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
+		}
+
+			break;
+		}
 		case E_BLOCK_WOODEN_PRESSURE_PLATE:
 		{
 			class cPressurePlateCallback :
 				public cEntityCallback
 			{
 			public:
-				cPressurePlateCallback(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World) :
-					m_Entity(NULL),
-					m_World(a_World),
+				cPressurePlateCallback(int a_BlockX, int a_BlockY, int a_BlockZ) :
+					m_FoundEntity(false),
 					m_X(a_BlockX),
 					m_Y(a_BlockY),
 					m_Z(a_BlockZ)
@@ -1070,7 +1170,7 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_BlockX, int a_Bloc
 
 					if (Distance <= 0.7)
 					{
-						m_Entity = a_Entity;
+						m_FoundEntity = true;
 						return true; // Break out, we only need to know for plates that at least one entity is on top
 					}
 					return false;
@@ -1078,45 +1178,46 @@ void cIncrementalRedstoneSimulator::HandlePressurePlate(int a_BlockX, int a_Bloc
 
 				bool FoundEntity(void) const
 				{
-					return m_Entity != NULL;
+					return m_FoundEntity;
 				}
 
 			protected:
-				cEntity * m_Entity;
-				cWorld * m_World;
+				bool m_FoundEntity;
 
 				int m_X;
 				int m_Y;
 				int m_Z;
 			} ;
 
-			cPressurePlateCallback PressurePlateCallback(a_BlockX, a_BlockY, a_BlockZ, &m_World);
+			cPressurePlateCallback PressurePlateCallback(a_BlockX, a_BlockY, a_BlockZ);
 			m_World.ForEachEntity(PressurePlateCallback);
 
 			NIBBLETYPE Meta = m_World.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
 			if (PressurePlateCallback.FoundEntity())
 			{
-				if (Meta == 0x0)
+				if (Meta == E_META_PRESSURE_PLATE_RAISED)
 				{
 					m_World.BroadcastSoundEffect("random.click", (int) ((a_BlockX + 0.5) * 8.0), (int) ((a_BlockY + 0.1) * 8.0), (int) ((a_BlockZ + 0.5) * 8.0), 0.3F, 0.5F);
 				}
-				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 0x1);
+				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_DEPRESSED);
 				SetAllDirsAsPowered(a_BlockX, a_BlockY, a_BlockZ, a_MyType);
 			}
 			else
 			{
-				if (Meta == 0x1)
+				if (Meta == E_META_PRESSURE_PLATE_DEPRESSED)
 				{
 					m_World.BroadcastSoundEffect("random.click", (int) ((a_BlockX + 0.5) * 8.0), (int) ((a_BlockY + 0.1) * 8.0), (int) ((a_BlockZ + 0.5) * 8.0), 0.3F, 0.6F);
 				}
-				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, 0x0);
+				m_World.SetBlockMeta(a_BlockX, a_BlockY, a_BlockZ, E_META_PRESSURE_PLATE_RAISED);
 				m_World.WakeUpSimulators(a_BlockX, a_BlockY, a_BlockZ);
 			}
 			break;
 		}
 		default:
+		{
 			LOGD("Unimplemented pressure plate type %s in cRedstoneSimulator", ItemToFullString(a_MyType).c_str());
 			break;
+		}
 	}
 }
 
@@ -1323,28 +1424,29 @@ bool cIncrementalRedstoneSimulator::IsPistonPowered(int a_BlockX, int a_BlockY,
 
 
 
-bool cIncrementalRedstoneSimulator::IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ)
+bool cIncrementalRedstoneSimulator::IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ, unsigned char & a_PowerLevel)
 {
-	for (PoweredBlocksList::const_iterator itr = m_PoweredBlocks->begin(); itr != m_PoweredBlocks->end(); ++itr)
-	{
-		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ))) { continue; }
+	a_PowerLevel = 0;
 
-		if (m_World.GetBlock(itr->a_SourcePos) != E_BLOCK_REDSTONE_WIRE)
+	for (PoweredBlocksList::const_iterator itr = m_PoweredBlocks->begin(); itr != m_PoweredBlocks->end(); ++itr) // Check powered list
+	{
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
-			return true;
+			continue;
 		}
+		a_PowerLevel = std::max(a_PowerLevel, itr->a_PowerLevel);
 	}
 
-	for (LinkedBlocksList::const_iterator itr = m_LinkedPoweredBlocks->begin(); itr != m_LinkedPoweredBlocks->end(); ++itr)
+	for (LinkedBlocksList::const_iterator itr = m_LinkedPoweredBlocks->begin(); itr != m_LinkedPoweredBlocks->end(); ++itr) // Check linked powered list
 	{
-		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ))) { continue; }
-
-		if (m_World.GetBlock(itr->a_SourcePos) != E_BLOCK_REDSTONE_WIRE)
+		if (!itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
 		{
-			return true;
+			continue;
 		}
+		a_PowerLevel = std::max(a_PowerLevel, itr->a_PowerLevel);
 	}
-	return false; // Source was in front of the piston's front face
+
+	return (a_PowerLevel != 0); // Source was in front of the piston's front face
 }
 
 
@@ -1374,7 +1476,7 @@ bool cIncrementalRedstoneSimulator::AreCoordsSimulated(int a_BlockX, int a_Block
 
 
 
-void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, BLOCKTYPE a_SourceType)
+void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, BLOCKTYPE a_SourceType, unsigned char a_PowerLevel)
 {
 	switch (a_Direction)
 	{
@@ -1382,11 +1484,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX - 1, a_BlockY, a_BlockZ);
 
-			SetBlockLinkedPowered(a_BlockX - 2, a_BlockY, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY + 1, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY - 1, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ + 1, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ - 1, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX - 2, a_BlockY, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY + 1, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY - 1, a_BlockZ, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ + 1, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ - 1, a_BlockX - 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1394,11 +1496,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX + 1, a_BlockY, a_BlockZ);
 
-			SetBlockLinkedPowered(a_BlockX + 2, a_BlockY, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY + 1, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY - 1, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ + 1, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ - 1, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX + 2, a_BlockY, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY + 1, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY - 1, a_BlockZ, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ + 1, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ - 1, a_BlockX + 1, a_BlockY, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1406,11 +1508,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ);
 
-			SetBlockLinkedPowered(a_BlockX, a_BlockY - 2, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ + 1, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ - 1, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY - 2, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ + 1, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ - 1, a_BlockX, a_BlockY - 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1418,11 +1520,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ);
 
-			SetBlockLinkedPowered(a_BlockX, a_BlockY + 2, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ + 1, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ - 1, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY + 2, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ + 1, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ - 1, a_BlockX, a_BlockY + 1, a_BlockZ, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1430,11 +1532,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ - 1);
 						
-			SetBlockLinkedPowered(a_BlockX, a_BlockY, a_BlockZ - 2, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY, a_BlockZ - 2, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ - 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1442,11 +1544,11 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 		{
 			BLOCKTYPE MiddleBlock = m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ + 1);
 			
-			SetBlockLinkedPowered(a_BlockX, a_BlockY, a_BlockZ + 2, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
-			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY, a_BlockZ + 2, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX + 1, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX - 1, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY + 1, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
+			SetBlockLinkedPowered(a_BlockX, a_BlockY - 1, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ + 1, a_BlockX, a_BlockY, a_BlockZ, a_SourceType, MiddleBlock, a_PowerLevel);
 
 			break;
 		}
@@ -1462,7 +1564,7 @@ void cIncrementalRedstoneSimulator::SetDirectionLinkedPowered(int a_BlockX, int
 
 
 
-void cIncrementalRedstoneSimulator::SetAllDirsAsPowered(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_SourceBlock)
+void cIncrementalRedstoneSimulator::SetAllDirsAsPowered(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_SourceBlock, unsigned char a_PowerLevel)
 {
 	static const struct
 	{
@@ -1479,7 +1581,7 @@ void cIncrementalRedstoneSimulator::SetAllDirsAsPowered(int a_BlockX, int a_Bloc
 
 	for (size_t i = 0; i < ARRAYCOUNT(gCrossCoords); i++) // Loop through struct to power all directions
 	{
-		SetBlockPowered(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y, a_BlockZ + gCrossCoords[i].z, a_BlockX, a_BlockY, a_BlockZ, a_SourceBlock);
+		SetBlockPowered(a_BlockX + gCrossCoords[i].x, a_BlockY + gCrossCoords[i].y, a_BlockZ + gCrossCoords[i].z, a_BlockX, a_BlockY, a_BlockZ, a_SourceBlock, a_PowerLevel);
 	}
 }
 
@@ -1487,7 +1589,7 @@ void cIncrementalRedstoneSimulator::SetAllDirsAsPowered(int a_BlockX, int a_Bloc
 
 
 
-void cIncrementalRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock)
+void cIncrementalRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock, unsigned char a_PowerLevel)
 {
 	BLOCKTYPE Block = m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ);
 	if (Block == E_BLOCK_AIR)
@@ -1497,15 +1599,31 @@ void cIncrementalRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY,
 	}
 
 	PoweredBlocksList * Powered = m_Chunk->GetNeighborChunk(a_BlockX, a_BlockZ)->GetRedstoneSimulatorPoweredBlocksList();
-
-	for (PoweredBlocksList::const_iterator itr = Powered->begin(); itr != Powered->end(); ++itr) // Check powered list
+	for (PoweredBlocksList::iterator itr = Powered->begin(); itr != Powered->end(); ++itr)  // Check powered list
 	{
 		if (
 			itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)) &&
 			itr->a_SourcePos.Equals(Vector3i(a_SourceX, a_SourceY, a_SourceZ))
-			)
+		)
+		{
+			// Check for duplicates, update power level if everything else the same but either way, don't add a new listing
+			if (itr->a_PowerLevel != a_PowerLevel)
+			{
+				itr->a_PowerLevel = a_PowerLevel;
+			}
+			return;
+		}
+	}
+
+	PoweredBlocksList * OtherPowered = m_Chunk->GetNeighborChunk(a_SourceX, a_SourceZ)->GetRedstoneSimulatorPoweredBlocksList();
+	for (PoweredBlocksList::const_iterator itr = OtherPowered->begin(); itr != OtherPowered->end(); ++itr)  // Check powered list
+	{
+		if (
+			itr->a_BlockPos.Equals(Vector3i(a_SourceX, a_SourceY, a_SourceZ)) &&
+			itr->a_SourcePos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ))
+		)
 		{
-			// Check for duplicates
+			// Powered wires try to power their source - don't let them!
 			return;
 		}
 	}
@@ -1513,6 +1631,7 @@ void cIncrementalRedstoneSimulator::SetBlockPowered(int a_BlockX, int a_BlockY,
 	sPoweredBlocks RC;
 	RC.a_BlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
 	RC.a_SourcePos = Vector3i(a_SourceX, a_SourceY, a_SourceZ);
+	RC.a_PowerLevel = a_PowerLevel;
 	Powered->push_back(RC);
 }
 
@@ -1524,7 +1643,7 @@ void cIncrementalRedstoneSimulator::SetBlockLinkedPowered(
 	int a_BlockX,  int a_BlockY,  int a_BlockZ,
 	int a_MiddleX, int a_MiddleY, int a_MiddleZ,
 	int a_SourceX, int a_SourceY, int a_SourceZ,
-	BLOCKTYPE a_SourceBlock, BLOCKTYPE a_MiddleBlock
+	BLOCKTYPE a_SourceBlock, BLOCKTYPE a_MiddleBlock, unsigned char a_PowerLevel
 )
 {
 	BLOCKTYPE DestBlock = m_World.GetBlock(a_BlockX, a_BlockY, a_BlockZ);
@@ -1539,16 +1658,19 @@ void cIncrementalRedstoneSimulator::SetBlockLinkedPowered(
 	}
 
 	LinkedBlocksList * Linked = m_Chunk->GetNeighborChunk(a_BlockX, a_BlockZ)->GetRedstoneSimulatorLinkedBlocksList();
-
-	for (LinkedBlocksList::const_iterator itr = Linked->begin(); itr != Linked->end(); ++itr) // Check linked powered list
+	for (LinkedBlocksList::iterator itr = Linked->begin(); itr != Linked->end(); ++itr)  // Check linked powered list
 	{
 		if (
 			itr->a_BlockPos.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)) &&
 			itr->a_MiddlePos.Equals(Vector3i(a_MiddleX, a_MiddleY, a_MiddleZ)) &&
 			itr->a_SourcePos.Equals(Vector3i(a_SourceX, a_SourceY, a_SourceZ))
-			)
+		)
 		{
-			// Check for duplicates
+			// Check for duplicates, update power level if everything else the same but either way, don't add a new listing
+			if (itr->a_PowerLevel != a_PowerLevel)
+			{
+				itr->a_PowerLevel = a_PowerLevel;
+			}
 			return;
 		}
 	}
@@ -1557,6 +1679,7 @@ void cIncrementalRedstoneSimulator::SetBlockLinkedPowered(
 	RC.a_BlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
 	RC.a_MiddlePos = Vector3i(a_MiddleX, a_MiddleY, a_MiddleZ);
 	RC.a_SourcePos = Vector3i(a_SourceX, a_SourceY, a_SourceZ);
+	RC.a_PowerLevel = a_PowerLevel;
 	Linked->push_back(RC);
 }
 
@@ -1621,7 +1744,7 @@ void cIncrementalRedstoneSimulator::QueueRepeaterPowerChange(int a_BlockX, int a
 	RC.a_BlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
 	
 	// Gets the top two bits (delay time), shifts them into the lower two bits, and adds one (meta 0 = 1 tick; 1 = 2 etc.)
-	// * 2 because apparently, MCS ticks are way faster than vanilla ticks, so repeater aren't noticeably delayed
+	// * 2 because in MCS, 1 redstone tick = 1 world tick, but in Vanilla, 1 redstone tick = 2 world ticks, and we need to maintain compatibility
 	RC.a_DelayTicks = (((a_Meta & 0xC) >> 0x2) + 1) * 2;
 
 	RC.a_ElapsedTicks = 0;
@@ -1697,12 +1820,3 @@ bool cIncrementalRedstoneSimulator::IsLeverOn(NIBBLETYPE a_BlockMeta)
 
 
 
-
-bool cIncrementalRedstoneSimulator::IsButtonOn(NIBBLETYPE a_BlockMeta)
-{
-	return IsLeverOn(a_BlockMeta);
-}
-
-
-
-
diff --git a/src/Simulator/IncrementalRedstoneSimulator.h b/src/Simulator/IncrementalRedstoneSimulator.h
index f93f86898..a42cce79a 100644
--- a/src/Simulator/IncrementalRedstoneSimulator.h
+++ b/src/Simulator/IncrementalRedstoneSimulator.h
@@ -36,31 +36,35 @@ public:
 
 private:
 
+	#define MAX_POWER_LEVEL 15
+
 	struct sPoweredBlocks // Define structure of the directly powered blocks list
 	{
 		Vector3i a_BlockPos; // Position of powered block
 		Vector3i a_SourcePos; // Position of source powering the block at a_BlockPos
+		unsigned char a_PowerLevel;
 	};
 
 	struct sLinkedPoweredBlocks // Define structure of the indirectly powered blocks list (i.e. repeaters powering through a block to the block at the other side)
 	{
 		Vector3i a_BlockPos;
-		Vector3i a_MiddlePos;
+		Vector3i a_MiddlePos; // Position of block that is betwixt a source and the destination
 		Vector3i a_SourcePos;
+		unsigned char a_PowerLevel;
 	};
 
-	struct sSimulatedPlayerToggleableList
+	struct sSimulatedPlayerToggleableList // Define structure of the list containing simulate-on-update blocks (such as trapdoors that respond once to a block update, and can be toggled by a player)
 	{
 		Vector3i a_BlockPos;
-		bool WasLastStatePowered;
+		bool WasLastStatePowered; // Was the last state powered or not? Determines whether a source update has happened and if I should resimulate
 	};
 
-	struct sRepeatersDelayList
+	struct sRepeatersDelayList // Define structure of list containing repeaters' delay states
 	{
 		Vector3i a_BlockPos;
-		unsigned char a_DelayTicks;
-		unsigned char a_ElapsedTicks;
-		bool ShouldPowerOn;
+		unsigned char a_DelayTicks; // For how many ticks should the repeater delay
+		unsigned char a_ElapsedTicks; // How much of the previous has been elapsed?
+		bool ShouldPowerOn; // What happens when the delay time is fulfilled?
 	};
 
 public:
@@ -132,15 +136,15 @@ private:
 
 	/* ====== Helper functions ====== */
 	/** Marks a block as powered */
-	void SetBlockPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock);
+	void SetBlockPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock, unsigned char a_PowerLevel = MAX_POWER_LEVEL);
 	/** Marks a block as being powered through another block */
-	void SetBlockLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_MiddleX, int a_MiddleY, int a_MiddleZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock, BLOCKTYPE a_MiddeBlock);
+	void SetBlockLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, int a_MiddleX, int a_MiddleY, int a_MiddleZ, int a_SourceX, int a_SourceY, int a_SourceZ, BLOCKTYPE a_SourceBlock, BLOCKTYPE a_MiddeBlock, unsigned char a_PowerLevel = MAX_POWER_LEVEL);
 	/** Marks a block as simulated, who should not be simulated further unless their power state changes, to accomodate a player manually toggling the block without triggering the simulator toggling it back */
 	void SetPlayerToggleableBlockAsSimulated(int a_BlockX, int a_BlockY, int a_BlockZ, bool WasLastStatePowered);
 	/** Marks the second block in a direction as linked powered */
-	void SetDirectionLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, BLOCKTYPE a_SourceBlock);
+	void SetDirectionLinkedPowered(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, BLOCKTYPE a_SourceBlock, unsigned char a_PowerLevel = MAX_POWER_LEVEL);
 	/** Marks all blocks immediately surrounding a coordinate as powered */
-	void SetAllDirsAsPowered(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_SourceBlock);
+	void SetAllDirsAsPowered(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_SourceBlock, unsigned char a_PowerLevel = MAX_POWER_LEVEL);
 	/** Queues a repeater to be powered or unpowered */
 	void QueueRepeaterPowerChange(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Meta, bool ShouldPowerOn);
 
@@ -159,15 +163,14 @@ private:
 	/** Returns if a piston is powered */
 	bool IsPistonPowered(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Meta);
 	/** Returns if a wire is powered
-		The only diffence between this and a normal AreCoordsPowered is that this function checks for a wire powering another wire
-	*/
-	bool IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ);
+	The only diffence between this and a normal AreCoordsPowered is that this function checks for a wire powering another wire */
+	bool IsWirePowered(int a_BlockX, int a_BlockY, int a_BlockZ, unsigned char & a_PowerLevel);
 
 
 	/** Returns if lever metadata marks it as emitting power */
 	bool IsLeverOn(NIBBLETYPE a_BlockMeta);
 	/** Returns if button metadata marks it as emitting power */
-	bool IsButtonOn(NIBBLETYPE a_BlockMeta);
+	bool IsButtonOn(NIBBLETYPE a_BlockMeta) { return IsLeverOn(a_BlockMeta); }
 	/* ============================== */
 
 	/* ====== Misc Functions ====== */
diff --git a/src/Vector3.h b/src/Vector3.h
index a00e14508..2c79f9ff1 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -108,6 +108,11 @@ public:
 		return x == a_Rhs.x && y == a_Rhs.y && z == a_Rhs.z;
 	}
 
+	inline bool operator == (const Vector3<T> & a_Rhs) const
+	{
+		return Equals(a_Rhs);
+	}
+
 	inline bool operator < (const Vector3<T> & a_Rhs)
 	{
 		// return (x < a_Rhs.x) && (y < a_Rhs.y) && (z < a_Rhs.z); ?
diff --git a/src/World.cpp b/src/World.cpp
index 7762a115e..2dc407f7b 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -574,7 +574,7 @@ void cWorld::Start(void)
 	m_IsSugarcaneBonemealable     = IniFile.GetValueSetB("Plants",        "IsSugarcaneBonemealable",     false);
 	m_IsDeepSnowEnabled           = IniFile.GetValueSetB("Physics",       "DeepSnow",                    true);
 	m_ShouldLavaSpawnFire         = IniFile.GetValueSetB("Physics",       "ShouldLavaSpawnFire",         true);
-	int TNTShrapnelLevel          = IniFile.GetValueSetI("Physics",       "TNTShrapnelLevel",            (int)slNone);
+	int TNTShrapnelLevel          = IniFile.GetValueSetI("Physics",       "TNTShrapnelLevel",            (int)slAll);
 	m_bCommandBlocksEnabled       = IniFile.GetValueSetB("Mechanics",     "CommandBlocksEnabled",        false);
 	m_bEnabledPVP                 = IniFile.GetValueSetB("Mechanics",     "PVPEnabled",                  true);
 	m_bUseChatPrefixes            = IniFile.GetValueSetB("Mechanics",     "UseChatPrefixes",             true);
@@ -1632,7 +1632,6 @@ bool cWorld::WriteBlockArea(cBlockArea & a_Area, int a_MinBlockX, int a_MinBlock
 
 void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_FlyAwaySpeed, bool IsPlayerCreated)
 {
-	MTRand r1;
 	a_FlyAwaySpeed /= 100;  // Pre-divide, so that we don't have to divide each time inside the loop
 	for (cItems::const_iterator itr = a_Pickups.begin(); itr != a_Pickups.end(); ++itr)
 	{
@@ -1642,9 +1641,9 @@ void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double
 			continue;
 		}
 
-		float SpeedX = (float)(a_FlyAwaySpeed * (r1.randInt(10) - 5));
-		float SpeedY = (float)(a_FlyAwaySpeed * r1.randInt(50));
-		float SpeedZ = (float)(a_FlyAwaySpeed * (r1.randInt(10) - 5));
+		float SpeedX = (float)(a_FlyAwaySpeed * (GetTickRandomNumber(10) - 5));
+		float SpeedY = (float)(a_FlyAwaySpeed * GetTickRandomNumber(50));
+		float SpeedZ = (float)(a_FlyAwaySpeed * (GetTickRandomNumber(10) - 5));
 		
 		cPickup * Pickup = new cPickup(
 			a_BlockX, a_BlockY, a_BlockZ,
diff --git a/src/WorldStorage/FireworksSerializer.cpp b/src/WorldStorage/FireworksSerializer.cpp
index 744fc731f..e0cd69634 100644
--- a/src/WorldStorage/FireworksSerializer.cpp
+++ b/src/WorldStorage/FireworksSerializer.cpp
@@ -231,7 +231,7 @@ void cFireworkItem::FadeColoursFromString(const AString & a_String, cFireworkIte
 
 
 
-int cFireworkItem::GetVanillaColourCodeFromDye(short a_DyeMeta)
+int cFireworkItem::GetVanillaColourCodeFromDye(NIBBLETYPE a_DyeMeta)
 {
 	/*
 	Colours are supposed to be calculated via: R << 16 + G << 8 + B
diff --git a/src/WorldStorage/FireworksSerializer.h b/src/WorldStorage/FireworksSerializer.h
index cbc544a14..59f1b09b0 100644
--- a/src/WorldStorage/FireworksSerializer.h
+++ b/src/WorldStorage/FireworksSerializer.h
@@ -81,7 +81,7 @@ public:
 	static void FadeColoursFromString(const AString & a_String, cFireworkItem & a_FireworkItem);
 
 	/** Returns a colour code for fireworks used by the network code */
-	static int GetVanillaColourCodeFromDye(short a_DyeMeta);
+	static int GetVanillaColourCodeFromDye(NIBBLETYPE a_DyeMeta);
 
 	bool m_HasFlicker;
 	bool m_HasTrail;