43 files changed, 2026 insertions, 1679 deletions

diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index cdc01ae09..6e579b364 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -590,7 +590,7 @@ static int tolua_DoWith(lua_State* tolua_S)
 template <
 	class Ty1,
 	class Ty2,
-	bool (Ty1::*Func1)(int, cItemCallback<Ty2> &)
+	bool (Ty1::*Func1)(UInt32, cItemCallback<Ty2> &)
 >
 static int tolua_DoWithID(lua_State* tolua_S)
 {
@@ -3879,6 +3879,10 @@ void ManualBindings::Bind(lua_State * tolua_S)
 		BindRankManager(tolua_S);
 		BindNetwork(tolua_S);
 
+		tolua_beginmodule(tolua_S, "cEntity");
+			tolua_constant(tolua_S, "INVALID_ID", cEntity::INVALID_ID);
+		tolua_endmodule(tolua_S);
+
 	tolua_endmodule(tolua_S);
 }
 
diff --git a/src/BlockEntities/DispenserEntity.cpp b/src/BlockEntities/DispenserEntity.cpp
index 42a0476b6..a847f1b65 100644
--- a/src/BlockEntities/DispenserEntity.cpp
+++ b/src/BlockEntities/DispenserEntity.cpp
@@ -105,7 +105,7 @@ void cDispenserEntity::DropSpenseFromSlot(cChunk & a_Chunk, int a_SlotNum)
 		{
 			double MobX = 0.5 + (DispX + DispChunk->GetPosX() * cChunkDef::Width);
 			double MobZ = 0.5 + (DispZ + DispChunk->GetPosZ() * cChunkDef::Width);
-			if (m_World->SpawnMob(MobX, DispY, MobZ, static_cast<eMonsterType>(m_Contents.GetSlot(a_SlotNum).m_ItemDamage)) >= 0)
+			if (m_World->SpawnMob(MobX, DispY, MobZ, static_cast<eMonsterType>(m_Contents.GetSlot(a_SlotNum).m_ItemDamage)) != cEntity::INVALID_ID)
 			{
 				m_Contents.ChangeSlotCount(a_SlotNum, -1);
 			}
@@ -144,29 +144,37 @@ void cDispenserEntity::DropSpenseFromSlot(cChunk & a_Chunk, int a_SlotNum)
 
 		case E_ITEM_FIRE_CHARGE:
 		{
-			SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkFireCharge, GetShootVector(Meta) * 20);
-			m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			if (SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkFireCharge, GetShootVector(Meta) * 20) != cEntity::INVALID_ID)
+			{
+				m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			}
 			break;
 		}
 
 		case E_ITEM_ARROW:
 		{
-			SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkArrow, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0));
-			m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			if (SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkArrow, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0)) != cEntity::INVALID_ID)
+			{
+				m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			}
 			break;
 		}
 
 		case E_ITEM_SNOWBALL:
 		{
-			SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkSnowball, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0));
-			m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			if (SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkSnowball, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0)) != cEntity::INVALID_ID)
+			{
+				m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			}
 			break;
 		}
 
 		case E_ITEM_EGG:
 		{
-			SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkEgg, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0));
-			m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			if (SpawnProjectileFromDispenser(BlockX, DispY, BlockZ, cProjectileEntity::pkEgg, GetShootVector(Meta) * 20 + Vector3d(0, 1, 0)) != cEntity::INVALID_ID)
+			{
+				m_Contents.ChangeSlotCount(a_SlotNum, -1);
+			}
 			break;
 		}
 
@@ -188,9 +196,14 @@ void cDispenserEntity::DropSpenseFromSlot(cChunk & a_Chunk, int a_SlotNum)
 
 
 
-void cDispenserEntity::SpawnProjectileFromDispenser(int a_BlockX, int a_BlockY, int a_BlockZ, cProjectileEntity::eKind a_Kind, const Vector3d & a_ShootVector)
+UInt32 cDispenserEntity::SpawnProjectileFromDispenser(int a_BlockX, int a_BlockY, int a_BlockZ, cProjectileEntity::eKind a_Kind, const Vector3d & a_ShootVector)
 {
-	m_World->CreateProjectile(static_cast<double>(a_BlockX + 0.5), static_cast<double>(a_BlockY + 0.5), static_cast<double>(a_BlockZ + 0.5), a_Kind, nullptr, nullptr, &a_ShootVector);
+	return m_World->CreateProjectile(
+		static_cast<double>(a_BlockX + 0.5),
+		static_cast<double>(a_BlockY + 0.5),
+		static_cast<double>(a_BlockZ + 0.5),
+		a_Kind, nullptr, nullptr, &a_ShootVector
+	);
 }
 
 
diff --git a/src/BlockEntities/DispenserEntity.h b/src/BlockEntities/DispenserEntity.h
index 12e12942a..62072d43b 100644
--- a/src/BlockEntities/DispenserEntity.h
+++ b/src/BlockEntities/DispenserEntity.h
@@ -24,8 +24,9 @@ public:
 
 	// tolua_begin
 	
-	/** Spawns a projectile of the given kind in front of the dispenser with the specified speed. */
-	void SpawnProjectileFromDispenser(int a_BlockX, int a_BlockY, int a_BlockZ, cProjectileEntity::eKind a_Kind, const Vector3d & a_Speed);
+	/** Spawns a projectile of the given kind in front of the dispenser with the specified speed.
+	Returns the UniqueID of the spawned projectile, or 0 on failure. */
+	UInt32 SpawnProjectileFromDispenser(int a_BlockX, int a_BlockY, int a_BlockZ, cProjectileEntity::eKind a_Kind, const Vector3d & a_Speed);
 
 	/** Returns a unit vector in the cardinal direction of where the dispenser is facing. */
 	Vector3d GetShootVector(NIBBLETYPE a_Meta);
diff --git a/src/BlockEntities/MobSpawnerEntity.cpp b/src/BlockEntities/MobSpawnerEntity.cpp
index 9b3f605f9..764d7af84 100644
--- a/src/BlockEntities/MobSpawnerEntity.cpp
+++ b/src/BlockEntities/MobSpawnerEntity.cpp
@@ -169,7 +169,7 @@ void cMobSpawnerEntity::SpawnEntity(void)
 
 					Monster->SetPosition(PosX, RelY, PosZ);
 					Monster->SetYaw(Random.NextFloat() * 360.0f);
-					if (Chunk->GetWorld()->SpawnMobFinalize(Monster) != mtInvalidType)
+					if (Chunk->GetWorld()->SpawnMobFinalize(Monster) != cEntity::INVALID_ID)
 					{
 						EntitiesSpawned = true;
 						Chunk->BroadcastSoundParticleEffect(2004, (int)(PosX * 8.0), (int)(RelY * 8.0), (int)(PosZ * 8.0), 0);
diff --git a/src/Blocks/WorldInterface.h b/src/Blocks/WorldInterface.h
index 106c314e7..44c118195 100644
--- a/src/Blocks/WorldInterface.h
+++ b/src/Blocks/WorldInterface.h
@@ -30,14 +30,16 @@ public:
 	/** Spawns item pickups for each item in the list. May compress pickups if too many entities: */
 	virtual void SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_FlyAwaySpeed = 1.0, bool IsPlayerCreated = false) = 0;
 	
-	/** Spawns item pickups for each item in the list. May compress pickups if too many entities. All pickups get the speed specified: */
+	/** Spawns item pickups for each item in the list. May compress pickups if too many entities. All pickups get the speed specified. */
 	virtual void SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_SpeedX, double a_SpeedY, double a_SpeedZ, bool IsPlayerCreated = false) = 0;
 	
-	/** Spawns a mob of the specified type. Returns the mob's EntityID if recognized and spawned, <0 otherwise */
-	virtual int SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType) = 0;
+	/** Spawns a mob of the specified type.
+	Returns the mob's UniqueID if recognized and spawned, or cEntity::INVALID_ID on failure. */
+	virtual UInt32 SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType) = 0;
 
-	/** Spawns an experience orb at the given location with the given reward. It returns the UniqueID of the spawned experience orb. */
-	virtual int SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward) = 0;
+	/** Spawns an experience orb at the given location with the given reward.
+	Returns the UniqueID of the spawned experience orb, or cEntity::INVALID_ID on failure. */
+	virtual UInt32 SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward) = 0;
 
 	/** Calls the callback for the block entity at the specified coords; returns false if there's no block entity at those coords, true if found */
 	virtual bool DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBlockEntityCallback & a_Callback) = 0;
diff --git a/src/ByteBuffer.cpp b/src/ByteBuffer.cpp
index f3dc44d91..dc757d8f6 100644
--- a/src/ByteBuffer.cpp
+++ b/src/ByteBuffer.cpp
@@ -81,9 +81,9 @@ public:
 	void TestWrite(void)
 	{
 		cByteBuffer buf(50);
-		buf.WriteVarInt(5);
-		buf.WriteVarInt(300);
-		buf.WriteVarInt(0);
+		buf.WriteVarInt32(5);
+		buf.WriteVarInt32(300);
+		buf.WriteVarInt32(0);
 		AString All;
 		buf.ReadAll(All);
 		assert_test(All.size() == 4);
@@ -101,8 +101,8 @@ public:
 			assert_test(buf.Write("a", 1));
 			assert_test(buf.CanReadBytes(1));
 			assert_test(buf.GetReadableSpace() == 1);
-			unsigned char v = 0;
-			assert_test(buf.ReadByte(v));
+			UInt8 v = 0;
+			assert_test(buf.ReadBEUInt8(v));
 			assert_test(v == 'a');
 			assert_test(buf.GetReadableSpace() == 0);
 			buf.CommitRead();
@@ -317,7 +317,7 @@ bool cByteBuffer::CanWriteBytes(size_t a_Count) const
 
 
 
-bool cByteBuffer::ReadChar(char & a_Value)
+bool cByteBuffer::ReadBEInt8(Int8 & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -330,7 +330,7 @@ bool cByteBuffer::ReadChar(char & a_Value)
 
 
 
-bool cByteBuffer::ReadByte(unsigned char & a_Value)
+bool cByteBuffer::ReadBEUInt8(UInt8 & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -343,15 +343,15 @@ bool cByteBuffer::ReadByte(unsigned char & a_Value)
 
 
 
-bool cByteBuffer::ReadBEShort(short & a_Value)
+bool cByteBuffer::ReadBEInt16(Int16 & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(2);
-	Int16 val;
+	UInt16 val;
 	ReadBuf(&val, 2);
 	val = ntohs(val);
-	a_Value = *(reinterpret_cast<short *>(&val));
+	memcpy(&a_Value, &val, 2);
 	return true;
 }
 
@@ -373,13 +373,15 @@ bool cByteBuffer::ReadBEUInt16(UInt16 & a_Value)
 
 
 
-bool cByteBuffer::ReadBEInt(int & a_Value)
+bool cByteBuffer::ReadBEInt32(Int32 & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(4);
-	ReadBuf(&a_Value, 4);
-	a_Value = (int)ntohl((u_long)a_Value);
+	UInt32 val;
+	ReadBuf(&val, 4);
+	val = ntohl(val);
+	memcpy(&a_Value, &val, 4);
 	return true;
 }
 
@@ -415,6 +417,20 @@ bool cByteBuffer::ReadBEInt64(Int64 & a_Value)
 
 
 
+bool cByteBuffer::ReadBEUInt64(UInt64 & a_Value)
+{
+	CHECK_THREAD
+	CheckValid();
+	NEEDBYTES(8);
+	ReadBuf(&a_Value, 8);
+	a_Value = NetworkToHostULong8(&a_Value);
+	return true;
+}
+
+
+
+
+
 bool cByteBuffer::ReadBEFloat(float & a_Value)
 {
 	CHECK_THREAD
@@ -448,7 +464,7 @@ bool cByteBuffer::ReadBool(bool & a_Value)
 	CHECK_THREAD
 	CheckValid();
 	NEEDBYTES(1);
-	char Value = 0;
+	UInt8 Value = 0;
 	ReadBuf(&Value, 1);
 	a_Value = (Value != 0);
 	return true;
@@ -462,24 +478,19 @@ bool cByteBuffer::ReadBEUTF16String16(AString & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
-	short Length;
-	if (!ReadBEShort(Length))
+	UInt16 Length;
+	if (!ReadBEUInt16(Length))
 	{
 		return false;
 	}
-	if (Length < 0)
-	{
-		ASSERT(!"Negative string length? Are you sure?");
-		return true;
-	}
-	return ReadUTF16String(a_Value, (size_t)Length);
+	return ReadUTF16String(a_Value, Length);
 }
 
 
 
 
 
-bool cByteBuffer::ReadVarInt(UInt32 & a_Value)
+bool cByteBuffer::ReadVarInt32(UInt32 & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -490,7 +501,29 @@ bool cByteBuffer::ReadVarInt(UInt32 & a_Value)
 	{
 		NEEDBYTES(1);
 		ReadBuf(&b, 1);
-		Value = Value | (((UInt32)(b & 0x7f)) << Shift);
+		Value = Value | ((static_cast<UInt32>(b & 0x7f)) << Shift);
+		Shift += 7;
+	} while ((b & 0x80) != 0);
+	a_Value = Value;
+	return true;
+}
+
+
+
+
+
+bool cByteBuffer::ReadVarInt64(UInt64 & a_Value)
+{
+	CHECK_THREAD
+	CheckValid();
+	UInt64 Value = 0;
+	int Shift = 0;
+	unsigned char b = 0;
+	do
+	{
+		NEEDBYTES(1);
+		ReadBuf(&b, 1);
+		Value = Value | ((static_cast<UInt64>(b & 0x7f)) << Shift);
 		Shift += 7;
 	} while ((b & 0x80) != 0);
 	a_Value = Value;
@@ -540,7 +573,7 @@ bool cByteBuffer::ReadLEInt(int & a_Value)
 
 
 
-bool cByteBuffer::ReadPosition(int & a_BlockX, int & a_BlockY, int & a_BlockZ)
+bool cByteBuffer::ReadPosition64(int & a_BlockX, int & a_BlockY, int & a_BlockZ)
 {
 	CHECK_THREAD
 	Int64 Value;
@@ -565,7 +598,7 @@ bool cByteBuffer::ReadPosition(int & a_BlockX, int & a_BlockY, int & a_BlockZ)
 
 
 
-bool cByteBuffer::WriteChar(char a_Value)
+bool cByteBuffer::WriteBEInt8(Int8 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -577,7 +610,7 @@ bool cByteBuffer::WriteChar(char a_Value)
 
 
 
-bool cByteBuffer::WriteByte(unsigned char a_Value)
+bool cByteBuffer::WriteBEUInt8(UInt8 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -589,33 +622,48 @@ bool cByteBuffer::WriteByte(unsigned char a_Value)
 
 
 
-bool cByteBuffer::WriteBEShort(short a_Value)
+bool cByteBuffer::WriteBEInt16(Int16 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(2);
-	u_short Converted = htons((u_short)a_Value);
-	return WriteBuf(&Converted, 2);
+	UInt16 val;
+	memcpy(&val, &a_Value, 2);
+	val = htons(val);
+	return WriteBuf(&val, 2);
 }
 
 
 
 
 
-bool cByteBuffer::WriteBEUShort(unsigned short a_Value)
+bool cByteBuffer::WriteBEUInt16(UInt16 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(2);
-	u_short Converted = htons((u_short)a_Value);
-	return WriteBuf(&Converted, 2);
+	a_Value = htons(a_Value);
+	return WriteBuf(&a_Value, 2);
 }
 
 
 
 
 
-bool cByteBuffer::WriteBEInt(int a_Value)
+bool cByteBuffer::WriteBEInt32(Int32 a_Value)
+{
+	CHECK_THREAD
+	CheckValid();
+	PUTBYTES(4);
+	UInt32 Converted = HostToNetwork4(&a_Value);
+	return WriteBuf(&Converted, 4);
+}
+
+
+
+
+
+bool cByteBuffer::WriteBEUInt32(UInt32 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -641,6 +689,19 @@ bool cByteBuffer::WriteBEInt64(Int64 a_Value)
 
 
 
+bool cByteBuffer::WriteBEUInt64(UInt64 a_Value)
+{
+	CHECK_THREAD
+	CheckValid();
+	PUTBYTES(8);
+	UInt64 Converted = HostToNetwork8(&a_Value);
+	return WriteBuf(&Converted, 8);
+}
+
+
+
+
+
 bool cByteBuffer::WriteBEFloat(float a_Value)
 {
 	CHECK_THREAD
@@ -672,14 +733,15 @@ bool cByteBuffer::WriteBool(bool a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
-	return WriteChar(a_Value ? 1 : 0);
+	UInt8 val = a_Value ? 1 : 0;
+	return Write(&val, 1);
 }
 
 
 
 
 
-bool cByteBuffer::WriteVarInt(UInt32 a_Value)
+bool cByteBuffer::WriteVarInt32(UInt32 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
@@ -700,12 +762,35 @@ bool cByteBuffer::WriteVarInt(UInt32 a_Value)
 
 
 
+
+bool cByteBuffer::WriteVarInt64(UInt64 a_Value)
+{
+	CHECK_THREAD
+	CheckValid();
+	
+	// A 64-bit integer can be encoded by at most 10 bytes:
+	unsigned char b[10];
+	size_t idx = 0;
+	do
+	{
+		b[idx] = (a_Value & 0x7f) | ((a_Value > 0x7f) ? 0x80 : 0x00);
+		a_Value = a_Value >> 7;
+		idx++;
+	} while (a_Value > 0);
+
+	return WriteBuf(b, idx);
+}
+
+
+
+
+
 bool cByteBuffer::WriteVarUTF8String(const AString & a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	PUTBYTES(a_Value.size() + 1);  // This is a lower-bound on the bytes that will be actually written. Fail early.
-	bool res = WriteVarInt((UInt32)(a_Value.size()));
+	bool res = WriteVarInt32(static_cast<UInt32>(a_Value.size()));
 	if (!res)
 	{
 		return false;
@@ -717,15 +802,15 @@ bool cByteBuffer::WriteVarUTF8String(const AString & a_Value)
 
 
 
-bool cByteBuffer::WriteLEInt(int a_Value)
+bool cByteBuffer::WriteLEInt32(Int32 a_Value)
 {
 	CHECK_THREAD
 	CheckValid();
 	#ifdef IS_LITTLE_ENDIAN
-		return WriteBuf((const char *)&a_Value, 4);
+		return WriteBuf(reinterpret_cast<const char *>(&a_Value), 4);
 	#else
 		int Value = ((a_Value >> 24) & 0xff) | ((a_Value >> 16) & 0xff00) | ((a_Value >> 8) & 0xff0000) | (a_Value & 0xff000000);
-		return WriteBuf((const char *)&Value, 4);
+		return WriteBuf(reinterpret_cast<const char *>(&Value), 4);
 	#endif
 }
 
@@ -733,10 +818,15 @@ bool cByteBuffer::WriteLEInt(int a_Value)
 
 
 
-bool cByteBuffer::WritePosition(int a_BlockX, int a_BlockY, int a_BlockZ)
+bool cByteBuffer::WritePosition64(Int32 a_BlockX, Int32 a_BlockY, Int32 a_BlockZ)
 {
 	CHECK_THREAD
-	return WriteBEInt64(((Int64)a_BlockX & 0x3FFFFFF) << 38 | ((Int64)a_BlockY & 0xFFF) << 26 | ((Int64)a_BlockZ & 0x3FFFFFF));
+	CheckValid();
+	return WriteBEInt64(
+		(static_cast<Int64>(a_BlockX & 0x3FFFFFF) << 38) |
+		(static_cast<Int64>(a_BlockY & 0xFFF) << 26) |
+		(static_cast<Int64>(a_BlockZ & 0x3FFFFFF))
+	);
 }
 
 
diff --git a/src/ByteBuffer.h b/src/ByteBuffer.h
index f480ad557..0a4935327 100644
--- a/src/ByteBuffer.h
+++ b/src/ByteBuffer.h
@@ -52,48 +52,53 @@ public:
 	bool CanWriteBytes(size_t a_Count) const;
 
 	// Read the specified datatype and advance the read pointer; return true if successfully read:
-	bool ReadChar           (char & a_Value);
-	bool ReadByte           (unsigned char & a_Value);
-	bool ReadBEShort        (short & a_Value);
+	bool ReadBEInt8         (Int8 & a_Value);
+	bool ReadBEInt16        (Int16 & a_Value);
+	bool ReadBEInt32        (Int32 & a_Value);
+	bool ReadBEInt64        (Int64 & a_Value);
+	bool ReadBEUInt8        (UInt8 & a_Value);
 	bool ReadBEUInt16       (UInt16 & a_Value);
-	bool ReadBEInt          (int & a_Value);
 	bool ReadBEUInt32       (UInt32 & a_Value);
-	bool ReadBEInt64        (Int64 & a_Value);
+	bool ReadBEUInt64       (UInt64 & a_Value);
 	bool ReadBEFloat        (float & a_Value);
 	bool ReadBEDouble       (double & a_Value);
 	bool ReadBool           (bool & a_Value);
 	bool ReadBEUTF16String16(AString & a_Value);  // string length as BE short, then string as UTF-16BE
-	bool ReadVarInt         (UInt32 & a_Value);
+	bool ReadVarInt32       (UInt32 & a_Value);
+	bool ReadVarInt64       (UInt64 & a_Value);
 	bool ReadVarUTF8String  (AString & a_Value);  // string length as VarInt, then string as UTF-8
 	bool ReadLEInt          (int & a_Value);
-	bool ReadPosition       (int & a_BlockX, int & a_BlockY, int & a_BlockZ);
+	bool ReadPosition64     (int & a_BlockX, int & a_BlockY, int & a_BlockZ);
 
-	/** Reads VarInt, assigns it to anything that can be assigned from an UInt32 (unsigned short, char, Byte, double, ...) */
+	/** Reads VarInt, assigns it to anything that can be assigned from an UInt64 (unsigned short, char, Byte, double, ...) */
 	template <typename T> bool ReadVarInt(T & a_Value)
 	{
-		UInt32 v;
-		bool res = ReadVarInt(v);
+		UInt64 v;
+		bool res = ReadVarInt64(v);
 		if (res)
 		{
-			a_Value = v;
+			a_Value = static_cast<T>(v);
 		}
 		return res;
 	}
 
 	// Write the specified datatype; return true if successfully written
-	bool WriteChar           (char a_Value);
-	bool WriteByte           (unsigned char a_Value);
-	bool WriteBEShort        (short  a_Value);
-	bool WriteBEUShort       (unsigned short a_Value);
-	bool WriteBEInt          (int    a_Value);
+	bool WriteBEInt8         (Int8   a_Value);
+	bool WriteBEInt16        (Int16  a_Value);
+	bool WriteBEInt32        (Int32  a_Value);
 	bool WriteBEInt64        (Int64  a_Value);
+	bool WriteBEUInt8        (UInt8  a_Value);
+	bool WriteBEUInt16       (UInt16 a_Value);
+	bool WriteBEUInt32       (UInt32 a_Value);
+	bool WriteBEUInt64       (UInt64 a_Value);
 	bool WriteBEFloat        (float  a_Value);
 	bool WriteBEDouble       (double a_Value);
 	bool WriteBool           (bool   a_Value);
-	bool WriteVarInt         (UInt32 a_Value);
+	bool WriteVarInt32       (UInt32 a_Value);
+	bool WriteVarInt64       (UInt64 a_Value);
 	bool WriteVarUTF8String  (const AString & a_Value);  // string length as VarInt, then string as UTF-8
-	bool WriteLEInt          (int a_Value);
-	bool WritePosition       (int a_BlockX, int a_BlockY, int a_BlockZ);
+	bool WriteLEInt32        (Int32 a_Value);
+	bool WritePosition64     (Int32 a_BlockX, Int32 a_BlockY, Int32 a_BlockZ);
 	
 	/** Reads a_Count bytes into a_Buffer; returns true if successful */
 	bool ReadBuf(void * a_Buffer, size_t a_Count);
diff --git a/src/Chunk.cpp b/src/Chunk.cpp
index 1e5481826..95dc7708e 100644
--- a/src/Chunk.cpp
+++ b/src/Chunk.cpp
@@ -1969,7 +1969,7 @@ void cChunk::RemoveEntity(cEntity * a_Entity)
 
 
 
-bool cChunk::HasEntity(int a_EntityID)
+bool cChunk::HasEntity(UInt32 a_EntityID)
 {
 	for (cEntityList::const_iterator itr = m_Entities.begin(), end = m_Entities.end(); itr != end; ++itr)
 	{
@@ -2027,7 +2027,7 @@ bool cChunk::ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback & a_
 
 
 
-bool cChunk::DoWithEntityByID(int a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult)
+bool cChunk::DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult)
 {
 	// The entity list is locked by the parent chunkmap's CS
 	for (cEntityList::iterator itr = m_Entities.begin(), end = m_Entities.end(); itr != end; ++itr)
@@ -2814,7 +2814,7 @@ void cChunk::BroadcastBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char
 
 
 
-void cChunk::BroadcastBlockBreakAnimation(int a_entityID, int a_blockX, int a_blockY, int a_blockZ, char a_stage, const cClientHandle * a_Exclude)
+void cChunk::BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude)
 {
 	for (cClientHandleList::iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr)
 	{
@@ -2822,7 +2822,7 @@ void cChunk::BroadcastBlockBreakAnimation(int a_entityID, int a_blockX, int a_bl
 		{
 			continue;
 		}
-		(*itr)->SendBlockBreakAnim(a_entityID, a_blockX, a_blockY, a_blockZ, a_stage);
+		(*itr)->SendBlockBreakAnim(a_EntityID, a_BlockX, a_BlockY, a_BlockZ, a_Stage);
 	}  // for itr - LoadedByClient[]
 }
 
diff --git a/src/Chunk.h b/src/Chunk.h
index 1ce862371..e8c60a74b 100644
--- a/src/Chunk.h
+++ b/src/Chunk.h
@@ -241,7 +241,7 @@ public:
 
 	void AddEntity(cEntity * a_Entity);
 	void RemoveEntity(cEntity * a_Entity);
-	bool HasEntity(int a_EntityID);
+	bool HasEntity(UInt32 a_EntityID);
 	
 	/** Calls the callback for each entity; returns true if all entities processed, false if the callback aborted by returning true */
 	bool ForEachEntity(cEntityCallback & a_Callback);  // Lua-accessible
@@ -251,7 +251,7 @@ public:
 	bool ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback & a_Callback);  // Lua-accessible
 
 	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found. */
-	bool DoWithEntityByID(int a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult);  // Lua-accessible
+	bool DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackResult);  // Lua-accessible
 
 	/** Calls the callback for each block entity; returns true if all block entities processed, false if the callback aborted by returning true */
 	bool ForEachBlockEntity(cBlockEntityCallback & a_Callback);  // Lua-accessible
@@ -317,7 +317,7 @@ public:
 	// (Please keep these alpha-sorted)
 	void BroadcastAttachEntity       (const cEntity & a_Entity, const cEntity * a_Vehicle);
 	void BroadcastBlockAction        (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = nullptr);
-	void BroadcastBlockBreakAnimation(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = nullptr);
+	void BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastBlockEntity        (int a_BlockX, int a_BlockY, int a_BlockZ, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastChunkData          (cChunkDataSerializer & a_Serializer, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastCollectEntity      (const cEntity & a_Entity, const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr);
diff --git a/src/ChunkMap.cpp b/src/ChunkMap.cpp
index b9d4ed55b..87da86131 100644
--- a/src/ChunkMap.cpp
+++ b/src/ChunkMap.cpp
@@ -373,19 +373,19 @@ void cChunkMap::BroadcastBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, c
 
 
 
-void cChunkMap::BroadcastBlockBreakAnimation(int a_entityID, int a_blockX, int a_blockY, int a_blockZ, char a_stage, const cClientHandle * a_Exclude)
+void cChunkMap::BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude)
 {
 	cCSLock Lock(m_CSLayers);
 	int ChunkX, ChunkZ;
 
-	cChunkDef::BlockToChunk(a_blockX, a_blockZ, ChunkX, ChunkZ);
+	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
 	cChunkPtr Chunk = GetChunkNoGen(ChunkX, ChunkZ);
 	if (Chunk == nullptr)
 	{
 		return;
 	}
 	// It's perfectly legal to broadcast packets even to invalid chunks!
-	Chunk->BroadcastBlockBreakAnimation(a_entityID, a_blockX, a_blockY, a_blockZ, a_stage, a_Exclude);
+	Chunk->BroadcastBlockBreakAnimation(a_EntityID, a_BlockX, a_BlockY, a_BlockZ, a_Stage, a_Exclude);
 }
 
 
@@ -1753,7 +1753,7 @@ void cChunkMap::AddEntityIfNotPresent(cEntity * a_Entity)
 
 
 
-bool cChunkMap::HasEntity(int a_UniqueID)
+bool cChunkMap::HasEntity(UInt32 a_UniqueID)
 {
 	cCSLock Lock(m_CSLayers);
 	for (cChunkLayerList::const_iterator itr = m_Layers.begin(); itr != m_Layers.end(); ++itr)
@@ -2045,7 +2045,7 @@ void cChunkMap::DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_
 
 
 
-bool cChunkMap::DoWithEntityByID(int a_UniqueID, cEntityCallback & a_Callback)
+bool cChunkMap::DoWithEntityByID(UInt32 a_UniqueID, cEntityCallback & a_Callback)
 {
 	cCSLock Lock(m_CSLayers);
 	bool res = false;
@@ -2996,7 +2996,7 @@ bool cChunkMap::cChunkLayer::ForEachEntity(cEntityCallback & a_Callback)
 
 
 
-bool cChunkMap::cChunkLayer::DoWithEntityByID(int a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackReturn)
+bool cChunkMap::cChunkLayer::DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackReturn)
 {
 	// Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found.
 	for (size_t i = 0; i < ARRAYCOUNT(m_Chunks); i++)
@@ -3016,7 +3016,7 @@ bool cChunkMap::cChunkLayer::DoWithEntityByID(int a_EntityID, cEntityCallback &
 
 
 
-bool cChunkMap::cChunkLayer::HasEntity(int a_EntityID)
+bool cChunkMap::cChunkLayer::HasEntity(UInt32 a_EntityID)
 {
 	for (size_t i = 0; i < ARRAYCOUNT(m_Chunks); i++)
 	{
diff --git a/src/ChunkMap.h b/src/ChunkMap.h
index f08d02337..0fac79c84 100644
--- a/src/ChunkMap.h
+++ b/src/ChunkMap.h
@@ -71,7 +71,7 @@ public:
 	// (Please keep these alpha-sorted)
 	void BroadcastAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle);
 	void BroadcastBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = nullptr);
-	void BroadcastBlockBreakAnimation(int a_entityID, int a_blockX, int a_blockY, int a_blockZ, char a_stage, const cClientHandle * a_Exclude = nullptr);
+	void BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, const cClientHandle * a_Exclude);
 	void BroadcastChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastCollectEntity(const cEntity & a_Entity, const cPlayer & a_Player, const cClientHandle * a_Exclude = nullptr);
@@ -217,7 +217,7 @@ public:
 	void AddEntityIfNotPresent(cEntity * a_Entity);
 	
 	/** Returns true if the entity with specified ID is present in the chunks */
-	bool HasEntity(int a_EntityID);
+	bool HasEntity(UInt32 a_EntityID);
 	
 	/** Removes the entity from its appropriate chunk */
 	void RemoveEntity(cEntity * a_Entity);
@@ -236,61 +236,80 @@ public:
 	/** Destroys and returns a list of blocks destroyed in the explosion at the specified coordinates */
 	void DoExplosionAt(double a_ExplosionSize, double a_BlockX, double a_BlockY, double a_BlockZ, cVector3iArray & a_BlockAffected);
 	
-	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found and callback returned false. */
-	bool DoWithEntityByID(int a_UniqueID, cEntityCallback & a_Callback);  // Lua-accessible
+	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param.
+	Returns true if entity found and callback returned false. */
+	bool DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for each block entity in the specified chunk; returns true if all block entities processed, false if the callback aborted by returning true */
+	/** Calls the callback for each block entity in the specified chunk.
+	Returns true if all block entities processed, false if the callback aborted by returning true. */
 	bool ForEachBlockEntityInChunk(int a_ChunkX, int a_ChunkZ, cBlockEntityCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for each chest in the specified chunk; returns true if all chests processed, false if the callback aborted by returning true */
+	/** Calls the callback for each chest in the specified chunk.
+	Returns true if all chests processed, false if the callback aborted by returning true. */
 	bool ForEachChestInChunk(int a_ChunkX, int a_ChunkZ, cChestCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for each dispenser in the specified chunk; returns true if all dispensers processed, false if the callback aborted by returning true */
+	/** Calls the callback for each dispenser in the specified chunk.
+	Returns true if all dispensers processed, false if the callback aborted by returning true. */
 	bool ForEachDispenserInChunk(int a_ChunkX, int a_ChunkZ, cDispenserCallback & a_Callback);
 
-	/** Calls the callback for each dropper in the specified chunk; returns true if all droppers processed, false if the callback aborted by returning true */
+	/** Calls the callback for each dropper in the specified chunk.
+	Returns true if all droppers processed, false if the callback aborted by returning true. */
 	bool ForEachDropperInChunk(int a_ChunkX, int a_ChunkZ, cDropperCallback & a_Callback);
 
-	/** Calls the callback for each dropspenser in the specified chunk; returns true if all dropspensers processed, false if the callback aborted by returning true */
+	/** Calls the callback for each dropspenser in the specified chunk.
+	Returns true if all dropspensers processed, false if the callback aborted by returning true. */
 	bool ForEachDropSpenserInChunk(int a_ChunkX, int a_ChunkZ, cDropSpenserCallback & a_Callback);
 
-	/** Calls the callback for each furnace in the specified chunk; returns true if all furnaces processed, false if the callback aborted by returning true */
+	/** Calls the callback for each furnace in the specified chunk.
+	Returns true if all furnaces processed, false if the callback aborted by returning true. */
 	bool ForEachFurnaceInChunk(int a_ChunkX, int a_ChunkZ, cFurnaceCallback & a_Callback);  // Lua-accessible
 	
-	/** Calls the callback for the block entity at the specified coords; returns false if there's no block entity at those coords, true if found */
+	/** Calls the callback for the block entity at the specified coords.
+	Returns false if there's no block entity at those coords, true if found. */
 	bool DoWithBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBlockEntityCallback & a_Callback);  // Lua-acessible
 
-	/** Calls the callback for the beacon at the specified coords; returns false if there's no beacon at those coords, true if found */
+	/** Calls the callback for the beacon at the specified coords.
+	Returns false if there's no beacon at those coords, true if found. */
 	bool DoWithBeaconAt(int a_BlockX, int a_BlockY, int a_BlockZ, cBeaconCallback & a_Callback);  // Lua-acessible
 
-	/** Calls the callback for the chest at the specified coords; returns false if there's no chest at those coords, true if found */
+	/** Calls the callback for the chest at the specified coords.
+	Returns false if there's no chest at those coords, true if found. */
 	bool DoWithChestAt(int a_BlockX, int a_BlockY, int a_BlockZ, cChestCallback & a_Callback);  // Lua-acessible
 
-	/** Calls the callback for the dispenser at the specified coords; returns false if there's no dispenser at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the dispenser at the specified coords.
+	Returns false if there's no dispenser at those coords or callback returns true, returns true if found. */
 	bool DoWithDispenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDispenserCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the dropper at the specified coords; returns false if there's no dropper at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the dropper at the specified coords.
+	Returns false if there's no dropper at those coords or callback returns true, returns true if found. */
 	bool DoWithDropperAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropperCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the dropspenser at the specified coords; returns false if there's no dropspenser at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the dropspenser at the specified coords.
+	Returns false if there's no dropspenser at those coords or callback returns true, returns true if found. */
 	bool DoWithDropSpenserAt(int a_BlockX, int a_BlockY, int a_BlockZ, cDropSpenserCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the furnace at the specified coords; returns false if there's no furnace at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the furnace at the specified coords.
+	Returns false if there's no furnace at those coords or callback returns true, returns true if found. */
 	bool DoWithFurnaceAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFurnaceCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the noteblock at the specified coords; returns false if there's no noteblock at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the noteblock at the specified coords.
+	Returns false if there's no noteblock at those coords or callback returns true, returns true if found. */
 	bool DoWithNoteBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, cNoteBlockCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the command block at the specified coords; returns false if there's no command block at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the command block at the specified coords.
+	Returns false if there's no command block at those coords or callback returns true, returns true if found. */
 	bool DoWithCommandBlockAt(int a_BlockX, int a_BlockY, int a_BlockZ, cCommandBlockCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the mob head block at the specified coords; returns false if there's no mob head block at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the mob head block at the specified coords.
+	Returns false if there's no mob head block at those coords or callback returns true, returns true if found. */
 	bool DoWithMobHeadAt(int a_BlockX, int a_BlockY, int a_BlockZ, cMobHeadCallback & a_Callback);  // Lua-accessible
 
-	/** Calls the callback for the flower pot at the specified coords; returns false if there's no flower pot at those coords or callback returns true, returns true if found */
+	/** Calls the callback for the flower pot at the specified coords.
+	Returns false if there's no flower pot at those coords or callback returns true, returns true if found. */
 	bool DoWithFlowerPotAt(int a_BlockX, int a_BlockY, int a_BlockZ, cFlowerPotCallback & a_Callback);  // Lua-accessible
 
-	/** Retrieves the test on the sign at the specified coords; returns false if there's no sign at those coords, true if found */
+	/** Retrieves the test on the sign at the specified coords.
+	Returns false if there's no sign at those coords, true if found. */
 	bool GetSignLines (int a_BlockX, int a_BlockY, int a_BlockZ, AString & a_Line1, AString & a_Line2, AString & a_Line3, AString & a_Line4);  // Lua-accessible
 
 	/** Touches the chunk, causing it to be loaded or generated */
@@ -423,10 +442,10 @@ private:
 		bool ForEachEntity(cEntityCallback & a_Callback);  // Lua-accessible
 
 		/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found. */
-		bool DoWithEntityByID(int a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackReturn);  // Lua-accessible
+		bool DoWithEntityByID(UInt32 a_EntityID, cEntityCallback & a_Callback, bool & a_CallbackReturn);  // Lua-accessible
 
 		/** Returns true if there is an entity with the specified ID within this layer's chunks */
-		bool HasEntity(int a_EntityID);
+		bool HasEntity(UInt32 a_EntityID);
 		
 	protected:
 	
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 6351ab2e3..28fccb68e 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -676,7 +676,7 @@ bool cClientHandle::HandleLogin(int a_ProtocolVersion, const AString & a_Usernam
 
 
 
-void cClientHandle::HandleCreativeInventory(short a_SlotNum, const cItem & a_HeldItem)
+void cClientHandle::HandleCreativeInventory(Int16 a_SlotNum, const cItem & a_HeldItem, eClickAction a_ClickAction)
 {
 	// This is for creative Inventory changes
 	if (!m_Player->IsGameModeCreative())
@@ -690,18 +690,18 @@ void cClientHandle::HandleCreativeInventory(short a_SlotNum, const cItem & a_Hel
 		return;
 	}
 	
-	m_Player->GetWindow()->Clicked(*m_Player, 0, a_SlotNum, (a_SlotNum >= 0) ? caLeftClick : caLeftClickOutside, a_HeldItem);
+	m_Player->GetWindow()->Clicked(*m_Player, 0, a_SlotNum, a_ClickAction, a_HeldItem);
 }
 
 
 
 
 
-void cClientHandle::HandleEnchantItem(Byte a_WindowID, Byte a_Enchantment)
+void cClientHandle::HandleEnchantItem(UInt8 a_WindowID, UInt8 a_Enchantment)
 {
 	if (a_Enchantment > 2)
 	{
-		LOGWARNING("%s attempt to crash the server with invalid enchanting selection!", GetUsername().c_str());
+		LOGWARNING("%s attempt to crash the server with invalid enchanting selection (%u)!", GetUsername().c_str(), a_Enchantment);
 		Kick("Invalid enchanting!");
 		return;
 	}
@@ -951,7 +951,7 @@ void cClientHandle::HandleCommandBlockBlockChange(int a_BlockX, int a_BlockY, in
 
 
 
-void cClientHandle::HandleCommandBlockEntityChange(int a_EntityID, const AString & a_NewCommand)
+void cClientHandle::HandleCommandBlockEntityChange(UInt32 a_EntityID, const AString & a_NewCommand)
 {
 	// TODO
 	LOGWARNING("%s: Not implemented yet", __FUNCTION__);
@@ -978,7 +978,7 @@ void cClientHandle::HandleAnvilItemName(const AString & a_ItemName)
 
 
 
-void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, char a_Status)
+void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, UInt8 a_Status)
 {
 	LOGD("HandleLeftClick: {%i, %i, %i}; Face: %i; Stat: %i",
 		a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_Status
@@ -1515,7 +1515,7 @@ void cClientHandle::HandleAnimation(int a_Animation)
 
 
 
-void cClientHandle::HandleSlotSelected(short a_SlotNum)
+void cClientHandle::HandleSlotSelected(Int16 a_SlotNum)
 {
 	m_Player->GetInventory().SetEquippedSlotNum(a_SlotNum);
 	m_Player->GetWorld()->BroadcastEntityEquipment(*m_Player, 0, m_Player->GetInventory().GetEquippedItem(), this);
@@ -1534,7 +1534,7 @@ void cClientHandle::HandleSteerVehicle(float a_Forward, float a_Sideways)
 
 
 
-void cClientHandle::HandleWindowClose(char a_WindowID)
+void cClientHandle::HandleWindowClose(UInt8 a_WindowID)
 {
 	m_Player->CloseWindowIfID(a_WindowID);
 }
@@ -1543,7 +1543,7 @@ void cClientHandle::HandleWindowClose(char a_WindowID)
 
 
 
-void cClientHandle::HandleWindowClick(char a_WindowID, short a_SlotNum, eClickAction a_ClickAction, const cItem & a_HeldItem)
+void cClientHandle::HandleWindowClick(UInt8 a_WindowID, Int16 a_SlotNum, eClickAction a_ClickAction, const cItem & a_HeldItem)
 {
 	LOGD("WindowClick: WinID %d, SlotNum %d, action: %s, Item %s x %d",
 		a_WindowID, a_SlotNum, ClickActionToString(a_ClickAction),
@@ -1581,7 +1581,7 @@ void cClientHandle::HandleUpdateSign(
 
 
 
-void cClientHandle::HandleUseEntity(int a_TargetEntityID, bool a_IsLeftClick)
+void cClientHandle::HandleUseEntity(UInt32 a_TargetEntityID, bool a_IsLeftClick)
 {
 	// TODO: Let plugins interfere via a hook
 	
@@ -1726,7 +1726,7 @@ bool cClientHandle::HandleHandshake(const AString & a_Username)
 
 
 
-void cClientHandle::HandleEntityCrouch(int a_EntityID, bool a_IsCrouching)
+void cClientHandle::HandleEntityCrouch(UInt32 a_EntityID, bool a_IsCrouching)
 {
 	if (a_EntityID != m_Player->GetUniqueID())
 	{
@@ -1741,7 +1741,7 @@ void cClientHandle::HandleEntityCrouch(int a_EntityID, bool a_IsCrouching)
 
 
 
-void cClientHandle::HandleEntityLeaveBed(int a_EntityID)
+void cClientHandle::HandleEntityLeaveBed(UInt32 a_EntityID)
 {
 	if (a_EntityID != m_Player->GetUniqueID())
 	{
@@ -1758,7 +1758,7 @@ void cClientHandle::HandleEntityLeaveBed(int a_EntityID)
 
 
 
-void cClientHandle::HandleEntitySprinting(int a_EntityID, bool a_IsSprinting)
+void cClientHandle::HandleEntitySprinting(UInt32 a_EntityID, bool a_IsSprinting)
 {
 	if (a_EntityID != m_Player->GetUniqueID())
 	{
@@ -2030,7 +2030,7 @@ void cClientHandle::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, ch
 
 
 
-void cClientHandle::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
+void cClientHandle::SendBlockBreakAnim(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
 {
 	m_Protocol->SendBlockBreakAnim(a_EntityID, a_BlockX, a_BlockY, a_BlockZ, a_Stage);
 }
diff --git a/src/ClientHandle.h b/src/ClientHandle.h
index 8129d6a50..9e5287985 100644
--- a/src/ClientHandle.h
+++ b/src/ClientHandle.h
@@ -144,7 +144,7 @@ public:  // tolua_export
 	// (Please keep these alpha-sorted)
 	void SendAttachEntity               (const cEntity & a_Entity, const cEntity * a_Vehicle);
 	void SendBlockAction                (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType);
-	void SendBlockBreakAnim             (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage);
+	void SendBlockBreakAnim             (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage);
 	void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);  // tolua_export
 	void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes);
 	void SendChat                       (const AString & a_Message, eMessageType a_ChatPrefix, const AString & a_AdditionalData = "");
@@ -276,16 +276,18 @@ public:  // tolua_export
 	
 	/** Called when the protocol receives a MC|AdvCdm plugin message, indicating that the player set a new
 	command in the command block UI, for an entity-based commandblock (minecart?). */
-	void HandleCommandBlockEntityChange(int a_EntityID, const AString & a_NewCommand);
+	void HandleCommandBlockEntityChange(UInt32 a_EntityID, const AString & a_NewCommand);
 	
-	void HandleCreativeInventory      (short a_SlotNum, const cItem & a_HeldItem);
+	/** Called when the client clicks the creative inventory window.
+	a_ClickAction specifies whether the click was inside the window or not (caLeftClick or caLeftClickOutside). */
+	void HandleCreativeInventory(Int16 a_SlotNum, const cItem & a_HeldItem, eClickAction a_ClickAction);
 
 	/** Called when the player enchants an Item in the Enchanting table UI. */
-	void HandleEnchantItem(Byte a_WindowID, Byte a_Enchantment);
+	void HandleEnchantItem(UInt8 a_WindowID, UInt8 a_Enchantment);
 
-	void HandleEntityCrouch           (int a_EntityID, bool a_IsCrouching);
-	void HandleEntityLeaveBed         (int a_EntityID);
-	void HandleEntitySprinting        (int a_EntityID, bool a_IsSprinting);
+	void HandleEntityCrouch           (UInt32 a_EntityID, bool a_IsCrouching);
+	void HandleEntityLeaveBed         (UInt32 a_EntityID);
+	void HandleEntitySprinting        (UInt32 a_EntityID, bool a_IsSprinting);
 	
 	/** Kicks the client if the same username is already logged in.
 	Returns false if the client has been kicked, true otherwise. */
@@ -298,7 +300,7 @@ public:  // tolua_export
 	bool HandleHandshake        (const AString & a_Username);
 	
 	void HandleKeepAlive        (int a_KeepAliveID);
-	void HandleLeftClick        (int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, char a_Status);
+	void HandleLeftClick        (int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, UInt8 a_Status);
 	
 	/** Called when the protocol receives a MC|TrSel packet, indicating that the player used a trade in
 	the NPC UI. */
@@ -312,7 +314,7 @@ public:  // tolua_export
 	void HandlePluginMessage    (const AString & a_Channel, const AString & a_Message);
 	void HandleRespawn          (void);
 	void HandleRightClick       (int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, const cItem & a_HeldItem);
-	void HandleSlotSelected     (short a_SlotNum);
+	void HandleSlotSelected     (Int16 a_SlotNum);
 	void HandleSteerVehicle     (float Forward, float Sideways);
 	void HandleTabCompletion    (const AString & a_Text);
 	void HandleUpdateSign       (
@@ -321,9 +323,9 @@ public:  // tolua_export
 		const AString & a_Line3, const AString & a_Line4
 	);
 	void HandleUnmount          (void);
-	void HandleUseEntity        (int a_TargetEntityID, bool a_IsLeftClick);
-	void HandleWindowClick      (char a_WindowID, short a_SlotNum, eClickAction a_ClickAction, const cItem & a_HeldItem);
-	void HandleWindowClose      (char a_WindowID);
+	void HandleUseEntity        (UInt32 a_TargetEntityID, bool a_IsLeftClick);
+	void HandleWindowClick      (UInt8 a_WindowID, Int16 a_SlotNum, eClickAction a_ClickAction, const cItem & a_HeldItem);
+	void HandleWindowClose      (UInt8 a_WindowID);
 
 	/** Called when the protocol has finished logging the user in.
 	Return true to allow the user in; false to kick them.
diff --git a/src/Endianness.h b/src/Endianness.h
index 5692b3811..ed9637fcc 100644
--- a/src/Endianness.h
+++ b/src/Endianness.h
@@ -59,6 +59,18 @@ inline Int64 NetworkToHostLong8(const void * a_Value)
 
 
 
+inline UInt64 NetworkToHostULong8(const void * a_Value)
+{
+	UInt64 buf;
+	memcpy(&buf, a_Value, 8);
+	buf = ntohll(buf);
+	return buf;
+}
+
+
+
+
+
 inline float NetworkToHostFloat4(const void * a_Value)
 {
 	UInt32 buf;
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 039c58ee4..c8df6b4b1 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -18,49 +18,50 @@
 
 
 
-int cEntity::m_EntityCount = 0;
+UInt32 cEntity::m_EntityCount = 0;
 cCriticalSection cEntity::m_CSCount;
 
 
 
 
 
-cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, double a_Width, double a_Height)
-	: m_UniqueID(0)
-	, m_Health(1)
-	, m_MaxHealth(1)
-	, m_AttachedTo(nullptr)
-	, m_Attachee(nullptr)
-	, m_bDirtyHead(true)
-	, m_bDirtyOrientation(true)
-	, m_bHasSentNoSpeed(true)
-	, m_bOnGround(false)
-	, m_Gravity(-9.81f)
-	, m_LastPos(a_X, a_Y, a_Z)
-	, m_IsInitialized(false)
-	, m_WorldTravellingFrom(nullptr)
-	, m_EntityType(a_EntityType)
-	, m_World(nullptr)
-	, m_IsFireproof(false)
-	, m_TicksSinceLastBurnDamage(0)
-	, m_TicksSinceLastLavaDamage(0)
-	, m_TicksSinceLastFireDamage(0)
-	, m_TicksLeftBurning(0)
-	, m_TicksSinceLastVoidDamage(0)
-	, m_IsSwimming(false)
-	, m_IsSubmerged(false)
-	, m_AirLevel(0)
-	, m_AirTickTimer(0)
-	, m_TicksAlive(0)
-	, m_HeadYaw(0.0)
-	, m_Rot(0.0, 0.0, 0.0)
-	, m_Pos(a_X, a_Y, a_Z)
-	, m_WaterSpeed(0, 0, 0)
-	, m_Mass (0.001)  // Default 1g
-	, m_Width(a_Width)
-	, m_Height(a_Height)
-	, m_InvulnerableTicks(0)
-{
+cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, double a_Width, double a_Height):
+	m_UniqueID(INVALID_ID),  // Proper ID will be assigned later in the constructor code
+	m_Health(1),
+	m_MaxHealth(1),
+	m_AttachedTo(nullptr),
+	m_Attachee(nullptr),
+	m_bDirtyHead(true),
+	m_bDirtyOrientation(true),
+	m_bHasSentNoSpeed(true),
+	m_bOnGround(false),
+	m_Gravity(-9.81f),
+	m_LastPos(a_X, a_Y, a_Z),
+	m_IsInitialized(false),
+	m_WorldTravellingFrom(nullptr),
+	m_EntityType(a_EntityType),
+	m_World(nullptr),
+	m_IsFireproof(false),
+	m_TicksSinceLastBurnDamage(0),
+	m_TicksSinceLastLavaDamage(0),
+	m_TicksSinceLastFireDamage(0),
+	m_TicksLeftBurning(0),
+	m_TicksSinceLastVoidDamage(0),
+	m_IsSwimming(false),
+	m_IsSubmerged(false),
+	m_AirLevel(0),
+	m_AirTickTimer(0),
+	m_TicksAlive(0),
+	m_HeadYaw(0.0),
+	m_Rot(0.0, 0.0, 0.0),
+	m_Pos(a_X, a_Y, a_Z),
+	m_WaterSpeed(0, 0, 0),
+	m_Mass (0.001),  // Default 1g
+	m_Width(a_Width),
+	m_Height(a_Height),
+	m_InvulnerableTicks(0)
+{
+	// Assign a proper ID:
 	cCSLock Lock(m_CSCount);
 	m_EntityCount++;
 	m_UniqueID = m_EntityCount;
diff --git a/src/Entities/Entity.h b/src/Entities/Entity.h
index 809e974d2..9bb1837f1 100644
--- a/src/Entities/Entity.h
+++ b/src/Entities/Entity.h
@@ -142,6 +142,10 @@ public:
 	
 	static const int VOID_BOUNDARY         = -46;  ///< Y position to begin applying void damage
 	static const int FALL_DAMAGE_HEIGHT    = 4;    ///< Y difference after which fall damage is applied
+
+	/** Special ID that is considered an "invalid value", signifying no entity. */
+	static const UInt32 INVALID_ID = 0;  // Exported to Lua in ManualBindings.cpp, ToLua doesn't parse initialized constants.
+
 	
 	cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, double a_Width, double a_Height);
 	virtual ~cEntity();
@@ -248,7 +252,7 @@ public:
 	virtual void HandleSpeedFromAttachee(float a_Forward, float a_Sideways);
 	void SteerVehicle(float a_Forward, float a_Sideways);
 
-	inline int  GetUniqueID(void) const { return m_UniqueID; }
+	inline UInt32 GetUniqueID(void) const { return m_UniqueID; }
 	inline bool IsDestroyed(void) const { return !m_IsInitialized; }
 
 	/// Schedules the entity for destroying; if a_ShouldBroadcast is set to true, broadcasts the DestroyEntity packet
@@ -464,12 +468,15 @@ public:
 
 protected:
 	static cCriticalSection m_CSCount;
-	static int m_EntityCount;
+	static UInt32 m_EntityCount;
 	
 	/** Measured in meter/second (m/s) */
 	Vector3d m_Speed;
 
-	int m_UniqueID;
+	/** The ID of the entity that is guaranteed to be unique within a single run of the server.
+	Always nonzero (a zero UniqueID (cEntity::INVALID_ID) is used for error reporting).
+	Note that the UniqueID is not persisted through storage. */
+	UInt32 m_UniqueID;
 	
 	int m_Health;
 	int m_MaxHealth;
diff --git a/src/Entities/ItemFrame.h b/src/Entities/ItemFrame.h
index 2444b26a3..ff43e5ee1 100644
--- a/src/Entities/ItemFrame.h
+++ b/src/Entities/ItemFrame.h
@@ -24,7 +24,7 @@ public:
 	// tolua_begin
 
 	/** Returns the item in the frame */
-	const cItem & GetItem(void) { return m_Item; }
+	const cItem & GetItem(void) const { return m_Item; }
 
 	/** Set the item in the frame */
 	void SetItem(cItem & a_Item) { m_Item = a_Item; }
diff --git a/src/Entities/Minecart.cpp b/src/Entities/Minecart.cpp
index a32926838..ee10cf6b3 100644
--- a/src/Entities/Minecart.cpp
+++ b/src/Entities/Minecart.cpp
@@ -24,7 +24,7 @@ class cMinecartCollisionCallback :
 	public cEntityCallback
 {
 public:
-	cMinecartCollisionCallback(Vector3d a_Pos, double a_Height, double a_Width, int a_UniqueID, int a_AttacheeUniqueID) :
+	cMinecartCollisionCallback(Vector3d a_Pos, double a_Height, double a_Width, UInt32 a_UniqueID, UInt32 a_AttacheeUniqueID) :
 		m_DoesInteserct(false),
 		m_CollidedEntityPos(0, 0, 0),
 		m_Pos(a_Pos),
@@ -77,8 +77,8 @@ protected:
 
 	Vector3d m_Pos;
 	double m_Height, m_Width;
-	int m_UniqueID;
-	int m_AttacheeUniqueID;
+	UInt32 m_UniqueID;
+	UInt32 m_AttacheeUniqueID;
 };
 
 
@@ -824,7 +824,10 @@ bool cMinecart::TestBlockCollision(NIBBLETYPE a_RailMeta)
 
 bool cMinecart::TestEntityCollision(NIBBLETYPE a_RailMeta)
 {
-	cMinecartCollisionCallback MinecartCollisionCallback(GetPosition(), GetHeight(), GetWidth(), GetUniqueID(), ((m_Attachee == nullptr) ? -1 : m_Attachee->GetUniqueID()));
+	cMinecartCollisionCallback MinecartCollisionCallback(
+		GetPosition(), GetHeight(), GetWidth(), GetUniqueID(),
+		((m_Attachee == nullptr) ? cEntity::INVALID_ID : m_Attachee->GetUniqueID())
+	);
 	int ChunkX, ChunkZ;
 	cChunkDef::BlockToChunk(POSX_TOINT, POSZ_TOINT, ChunkX, ChunkZ);
 	m_World->ForEachEntityInChunk(ChunkX, ChunkZ, MinecartCollisionCallback);
diff --git a/src/Entities/ProjectileEntity.cpp b/src/Entities/ProjectileEntity.cpp
index 21ec4e63a..4684e3e09 100644
--- a/src/Entities/ProjectileEntity.cpp
+++ b/src/Entities/ProjectileEntity.cpp
@@ -221,7 +221,7 @@ cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, double a
 	super(etProjectile, a_X, a_Y, a_Z, a_Width, a_Height),
 	m_ProjectileKind(a_Kind),
 	m_CreatorData(
-		((a_Creator != nullptr) ? a_Creator->GetUniqueID() : -1),
+		((a_Creator != nullptr) ? a_Creator->GetUniqueID() : cEntity::INVALID_ID),
 		((a_Creator != nullptr) ? (a_Creator->IsPlayer() ? ((cPlayer *)a_Creator)->GetName() : "") : ""),
 		((a_Creator != nullptr) ? a_Creator->GetEquippedWeapon().m_Enchantments : cEnchantments())
 	),
diff --git a/src/Entities/ProjectileEntity.h b/src/Entities/ProjectileEntity.h
index 93e442d8c..de460a8ad 100644
--- a/src/Entities/ProjectileEntity.h
+++ b/src/Entities/ProjectileEntity.h
@@ -69,7 +69,7 @@ public:
 	/** Returns the unique ID of the entity who created this projectile
 	May return an ID <0
 	*/
-	int GetCreatorUniqueID(void) { return m_CreatorData.m_UniqueID; }
+	UInt32 GetCreatorUniqueID(void) { return m_CreatorData.m_UniqueID; }
 
 	/** Returns the name of the player that created the projectile
 	Will be empty for non-player creators
@@ -90,18 +90,17 @@ public:
 protected:
 
 	/** A structure that stores the Entity ID and Playername of the projectile's creator
-	Used to migitate invalid pointers caused by the creator being destroyed
-	*/
+	Used to migitate invalid pointers caused by the creator being destroyed. */
 	struct CreatorData
 	{
-		CreatorData(int a_UniqueID, const AString & a_Name, const cEnchantments & a_Enchantments) :
+		CreatorData(UInt32 a_UniqueID, const AString & a_Name, const cEnchantments & a_Enchantments) :
 			m_UniqueID(a_UniqueID),
 			m_Name(a_Name),
 			m_Enchantments(a_Enchantments)
 		{
 		}
 
-		const int m_UniqueID;
+		const UInt32 m_UniqueID;
 		AString m_Name;
 		cEnchantments m_Enchantments;
 	};
@@ -110,8 +109,7 @@ protected:
 	eKind m_ProjectileKind;
 	
 	/** The structure for containing the entity ID and name who has created this projectile
-	The ID and/or name may be nullptr (e.g. for dispensers/mobs)
-	*/
+	The ID and/or name may be nullptr (e.g. for dispensers/mobs). */
 	CreatorData m_CreatorData;
 	
 	/** True if the projectile has hit the ground and is stuck there */
diff --git a/src/Globals.h b/src/Globals.h
index 7c2ab38d8..bd180c08f 100644
--- a/src/Globals.h
+++ b/src/Globals.h
@@ -132,13 +132,15 @@
 
 
 // Integral types with predefined sizes:
-typedef long long Int64;
-typedef int       Int32;
-typedef short     Int16;
+typedef signed long long Int64;
+typedef signed int       Int32;
+typedef signed short     Int16;
+typedef signed char      Int8;
 
 typedef unsigned long long UInt64;
 typedef unsigned int       UInt32;
 typedef unsigned short     UInt16;
+typedef unsigned char      UInt8;
 
 typedef unsigned char Byte;
 
@@ -156,10 +158,12 @@ class SizeChecker<T, Size, true>
 template class SizeChecker<Int64, 8>;
 template class SizeChecker<Int32, 4>;
 template class SizeChecker<Int16, 2>;
+template class SizeChecker<Int8,  1>;
 
 template class SizeChecker<UInt64, 8>;
 template class SizeChecker<UInt32, 4>;
 template class SizeChecker<UInt16, 2>;
+template class SizeChecker<UInt8,  1>;
 
 // A macro to disallow the copy constructor and operator = functions
 // This should be used in the private: declarations for any class that shouldn't allow copying itself
diff --git a/src/Items/ItemPotion.h b/src/Items/ItemPotion.h
index 398ef6805..798573846 100644
--- a/src/Items/ItemPotion.h
+++ b/src/Items/ItemPotion.h
@@ -39,7 +39,7 @@ public:
 		Vector3d Pos = a_Player->GetThrowStartPos();
 		Vector3d Speed = a_Player->GetLookVector() * 7;
 		
-		if (a_World->CreateProjectile(Pos.x, Pos.y, Pos.z, cProjectileEntity::pkSplashPotion, a_Player, &a_Player->GetEquippedItem(), &Speed) < 0)
+		if (a_World->CreateProjectile(Pos.x, Pos.y, Pos.z, cProjectileEntity::pkSplashPotion, a_Player, &a_Player->GetEquippedItem(), &Speed) == cEntity::INVALID_ID)
 		{
 			return false;
 		}
diff --git a/src/Items/ItemSpawnEgg.h b/src/Items/ItemSpawnEgg.h
index dee8a9057..a07e4ef49 100644
--- a/src/Items/ItemSpawnEgg.h
+++ b/src/Items/ItemSpawnEgg.h
@@ -36,7 +36,7 @@ public:
 		eMonsterType MonsterType = ItemDamageToMonsterType(a_Item.m_ItemDamage);
 		if (
 			(MonsterType != mtInvalidType) &&  // Valid monster type
-			(a_World->SpawnMob(a_BlockX + 0.5, a_BlockY, a_BlockZ + 0.5, MonsterType) >= 0))  // Spawning succeeded
+			(a_World->SpawnMob(a_BlockX + 0.5, a_BlockY, a_BlockZ + 0.5, MonsterType) != cEntity::INVALID_ID))  // Spawning succeeded
 		{
 			if (!a_Player->IsGameModeCreative())
 			{
diff --git a/src/Items/ItemThrowable.h b/src/Items/ItemThrowable.h
index c151c5d3a..cdcbdab3b 100644
--- a/src/Items/ItemThrowable.h
+++ b/src/Items/ItemThrowable.h
@@ -35,7 +35,7 @@ public:
 		cFastRandom Random;
 		a_World->BroadcastSoundEffect("random.bow", a_Player->GetPosX(), a_Player->GetPosY() - a_Player->GetHeight(), a_Player->GetPosZ(), 0.5f, 0.4f / (Random.NextFloat(1.0f) * 0.4f + 0.8f));
 
-		if (a_World->CreateProjectile(Pos.x, Pos.y, Pos.z, m_ProjectileKind, a_Player, &a_Player->GetEquippedItem(), &Speed) < 0)
+		if (a_World->CreateProjectile(Pos.x, Pos.y, Pos.z, m_ProjectileKind, a_Player, &a_Player->GetEquippedItem(), &Speed) == cEntity::INVALID_ID)
 		{
 			return false;
 		}
@@ -135,7 +135,7 @@ public:
 			return false;
 		}
 
-		if (a_World->CreateProjectile(a_BlockX + 0.5, a_BlockY + 1, a_BlockZ + 0.5, m_ProjectileKind, a_Player, &a_Player->GetEquippedItem()) < 0)
+		if (a_World->CreateProjectile(a_BlockX + 0.5, a_BlockY + 1, a_BlockZ + 0.5, m_ProjectileKind, a_Player, &a_Player->GetEquippedItem()) == 0)
 		{
 			return false;
 		}
diff --git a/src/LoggerListeners.h b/src/LoggerListeners.h
index d300184b1..c419aa75a 100644
--- a/src/LoggerListeners.h
+++ b/src/LoggerListeners.h
@@ -1,5 +1,6 @@
 
 #include "Logger.h"
+#include "OSSupport/File.h"
 
 
 
diff --git a/src/MapManager.cpp b/src/MapManager.cpp
index 2a3ab192b..fc67bd901 100644
--- a/src/MapManager.cpp
+++ b/src/MapManager.cpp
@@ -22,7 +22,7 @@ cMapManager::cMapManager(cWorld * a_World)
 
 
 
-bool cMapManager::DoWithMap(int a_ID, cMapCallback & a_Callback)
+bool cMapManager::DoWithMap(UInt32 a_ID, cMapCallback & a_Callback)
 {
 	cCSLock Lock(m_CS);
 	cMap * Map = GetMapData(a_ID);
diff --git a/src/MapManager.h b/src/MapManager.h
index 2cc6a7bce..1059773c3 100644
--- a/src/MapManager.h
+++ b/src/MapManager.h
@@ -32,8 +32,7 @@ public:
 	cMapManager(cWorld * a_World);
 
 	/** Returns the map with the specified ID, nullptr if out of range.
-	WARNING: The returned map object is not thread safe.
-	*/
+	WARNING: The returned map object is not thread safe. */
 	cMap * GetMapData(unsigned int a_ID);
 
 	/** Creates a new map. Returns nullptr on error */
@@ -41,13 +40,11 @@ public:
 
 	/** Calls the callback for the map with the specified ID.
 	Returns true if the map was found and the callback called, false if map not found.
-	Callback return value is ignored.
-	*/
-	bool DoWithMap(int a_ID, cMapCallback & a_Callback);  // Exported in ManualBindings.cpp
+	Callback return value is ignored. */
+	bool DoWithMap(UInt32 a_ID, cMapCallback & a_Callback);  // Exported in ManualBindings.cpp
 
 	/** Calls the callback for each map.
-	Returns true if all maps processed, false if the callback aborted by returning true.
-	*/
+	Returns true if all maps processed, false if the callback aborted by returning true. */
 	bool ForEachMap(cMapCallback & a_Callback);
 
 	size_t GetNumMaps(void) const;  // tolua_export
diff --git a/src/Mobs/Creeper.cpp b/src/Mobs/Creeper.cpp
index c4ae47f2f..41796402f 100644
--- a/src/Mobs/Creeper.cpp
+++ b/src/Mobs/Creeper.cpp
@@ -67,30 +67,29 @@ void cCreeper::GetDrops(cItems & a_Drops, cEntity * a_Killer)
 	}
 	AddRandomDropItem(a_Drops, 0, 2 + LootingLevel, E_ITEM_GUNPOWDER);
 
-	if ((a_Killer != nullptr) && a_Killer->IsProjectile() && (((cProjectileEntity *)a_Killer)->GetCreatorUniqueID() >= 0))
+	// If the creeper was killed by a skeleton, add a random music disc drop:
+	if (
+		(a_Killer != nullptr) &&
+		a_Killer->IsProjectile() &&
+		((reinterpret_cast<cProjectileEntity *>(a_Killer))->GetCreatorUniqueID() != cEntity::INVALID_ID))
 	{
 		class cProjectileCreatorCallback : public cEntityCallback
 		{
 		public:
-			cProjectileCreatorCallback(void)
-			{
-			}
+			cProjectileCreatorCallback(void) {}
 
 			virtual bool Item(cEntity * a_Entity) override
 			{
-				if (a_Entity->IsMob() && ((cMonster *)a_Entity)->GetMobType() == mtSkeleton)
+				if (a_Entity->IsMob() && ((reinterpret_cast<cMonster *>(a_Entity))->GetMobType() == mtSkeleton))
 				{
 					return true;
 				}
 				return false;
 			}
-		};
-
-		cProjectileCreatorCallback PCC;
-		if (GetWorld()->DoWithEntityByID(((cProjectileEntity *)a_Killer)->GetCreatorUniqueID(), PCC))
+		} PCC;
+		if (GetWorld()->DoWithEntityByID((reinterpret_cast<cProjectileEntity *>(a_Killer))->GetCreatorUniqueID(), PCC))
 		{
-			// 12 music discs. TickRand starts from 0 to 11. Disk IDs start at 2256, so add that. There.
-			AddRandomDropItem(a_Drops, 1, 1, (short)m_World->GetTickRandomNumber(11) + 2256);
+			AddRandomDropItem(a_Drops, 1, 1, static_cast<short>(m_World->GetTickRandomNumber(11) + E_ITEM_FIRST_DISC));
 		}
 	}
 }
diff --git a/src/OSSupport/CriticalSection.h b/src/OSSupport/CriticalSection.h
index 17fcdfc12..d52f049d2 100644
--- a/src/OSSupport/CriticalSection.h
+++ b/src/OSSupport/CriticalSection.h
@@ -10,22 +10,22 @@
 class cCriticalSection
 {
 public:
-
 	void Lock(void);
 	void Unlock(void);
 	
 	// IsLocked/IsLockedByCurrentThread are only used in ASSERT statements, but because of the changes with ASSERT they must always be defined
 	// The fake versions (in Release) will not effect the program in any way
 	#ifdef _DEBUG
-	cCriticalSection(void);
-	bool IsLocked(void);
-	bool IsLockedByCurrentThread(void);
+		cCriticalSection(void);
+		bool IsLocked(void);
+		bool IsLockedByCurrentThread(void);
 	#else
-	bool IsLocked(void) { return false; }
-	bool IsLockedByCurrentThread(void) { return false; }
+		bool IsLocked(void) { return false; }
+		bool IsLockedByCurrentThread(void) { return false; }
 	#endif  // _DEBUG
 	
 private:
+
 	#ifdef _DEBUG
 	int           m_IsLocked;  // Number of times this CS is locked
 	std::thread::id m_OwningThreadID;
diff --git a/src/Protocol/CMakeLists.txt b/src/Protocol/CMakeLists.txt
index 7c97e67bc..c3a45ca47 100644
--- a/src/Protocol/CMakeLists.txt
+++ b/src/Protocol/CMakeLists.txt
@@ -8,19 +8,23 @@ SET (SRCS
 	Authenticator.cpp
 	ChunkDataSerializer.cpp
 	MojangAPI.cpp
+	Packetizer.cpp
 	Protocol17x.cpp
 	Protocol18x.cpp
-	ProtocolRecognizer.cpp)
+	ProtocolRecognizer.cpp
+)
 
 SET (HDRS
 	Authenticator.h
 	ChunkDataSerializer.h
 	MojangAPI.h
+	Packetizer.h
 	Protocol.h
 	Protocol17x.h
 	Protocol18x.h
-	ProtocolRecognizer.h)
+	ProtocolRecognizer.h
+)
 
-if(NOT MSVC)
+if (NOT MSVC)
 	add_library(Protocol ${SRCS} ${HDRS})
 endif()
diff --git a/src/Protocol/ChunkDataSerializer.cpp b/src/Protocol/ChunkDataSerializer.cpp
index 5d080656d..60fd5f935 100644
--- a/src/Protocol/ChunkDataSerializer.cpp
+++ b/src/Protocol/ChunkDataSerializer.cpp
@@ -187,11 +187,11 @@ void cChunkDataSerializer::Serialize47(AString & a_Data, int a_ChunkX, int a_Chu
 
 	// Create the packet:
 	cByteBuffer Packet(512 KiB);
-	Packet.WriteVarInt(0x21);  // Packet id (Chunk Data packet)
-	Packet.WriteBEInt(a_ChunkX);
-	Packet.WriteBEInt(a_ChunkZ);
-	Packet.WriteBool(true);  // "Ground-up continuous", or rather, "biome data present" flag
-	Packet.WriteBEUShort(0xffff);  // We're aways sending the full chunk with no additional data, so the bitmap is 0xffff
+	Packet.WriteVarInt32(0x21);  // Packet id (Chunk Data packet)
+	Packet.WriteBEInt32(a_ChunkX);
+	Packet.WriteBEInt32(a_ChunkZ);
+	Packet.WriteBool(true);        // "Ground-up continuous", or rather, "biome data present" flag
+	Packet.WriteBEUInt16(0xffff);  // We're aways sending the full chunk with no additional data, so the bitmap is 0xffff
 
 	// Write the chunk size:
 	const int BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
@@ -201,15 +201,15 @@ void cChunkDataSerializer::Serialize47(AString & a_Data, int a_ChunkX, int a_Chu
 		sizeof(m_BlockSkyLight) +     // Block sky light
 		BiomeDataSize                 // Biome data
 	);
-	Packet.WriteVarInt(ChunkSize);
+	Packet.WriteVarInt32(ChunkSize);
 
 	// Write the block types to the packet:
 	for (size_t Index = 0; Index < cChunkDef::NumBlocks; Index++)
 	{
 		BLOCKTYPE BlockType = m_BlockTypes[Index] & 0xFF;
 		NIBBLETYPE BlockMeta = m_BlockMetas[Index / 2] >> ((Index & 1) * 4) & 0x0f;
-		Packet.WriteByte((unsigned char)(BlockType << 4) | BlockMeta);
-		Packet.WriteByte((unsigned char)(BlockType >> 4));
+		Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType << 4) | BlockMeta);
+		Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType >> 4));
 	}
 
 	// Write the rest:
@@ -234,8 +234,8 @@ void cChunkDataSerializer::Serialize47(AString & a_Data, int a_ChunkX, int a_Chu
 	else
 	{
 		AString PostData;
-		Buffer.WriteVarInt((UInt32)Packet.GetUsedSpace() + 1);
-		Buffer.WriteVarInt(0);
+		Buffer.WriteVarInt32(static_cast<UInt32>(Packet.GetUsedSpace() + 1));
+		Buffer.WriteVarInt32(0);
 		Buffer.ReadAll(PostData);
 		Buffer.CommitRead();
 
diff --git a/src/Protocol/Packetizer.cpp b/src/Protocol/Packetizer.cpp
new file mode 100644
index 000000000..0a84d4678
--- /dev/null
+++ b/src/Protocol/Packetizer.cpp
@@ -0,0 +1,101 @@
+
+// Packetizer.cpp
+
+// Implements the cPacketizer class representing a wrapper for sending a single packet over a protocol.
+
+#include "Globals.h"
+#include "Packetizer.h"
+
+
+
+
+
+/** Converts the hex digit character to its value. */
+static UInt8 HexDigitValue(char a_Character)
+{
+	switch (a_Character)
+	{
+		case '0': return 0;
+		case '1': return 1;
+		case '2': return 2;
+		case '3': return 3;
+		case '4': return 4;
+		case '5': return 5;
+		case '6': return 6;
+		case '7': return 7;
+		case '8': return 8;
+		case '9': return 9;
+		case 'a': return 10;
+		case 'b': return 11;
+		case 'c': return 12;
+		case 'd': return 13;
+		case 'e': return 14;
+		case 'f': return 15;
+		case 'A': return 10;
+		case 'B': return 11;
+		case 'C': return 12;
+		case 'D': return 13;
+		case 'E': return 14;
+		case 'F': return 15;
+		default:
+		{
+			LOGWARNING("Bad hex digit: %c", a_Character);
+			ASSERT(!"Bad hex digit");
+			return 0;
+		}
+	}
+}
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cPacketizer:
+
+cPacketizer::~cPacketizer()
+{
+	m_Protocol.SendPacket(*this);
+}
+
+
+
+
+
+void cPacketizer::WriteByteAngle(double a_Angle)
+{
+	WriteBEInt8(static_cast<Int8>(255 * a_Angle / 360));
+}
+
+
+
+
+
+void cPacketizer::WriteFPInt(double a_Value)
+{
+	WriteBEInt32(static_cast<Int32>(a_Value * 32));
+}
+
+
+
+
+
+void cPacketizer::WriteUUID(const AString & a_UUID)
+{
+	if (a_UUID.length() != 32)
+	{
+		LOGWARNING("%s: Attempt to send a bad uuid (length isn't 32): %s", __FUNCTION__, a_UUID.c_str());
+		ASSERT(!"Wrong uuid length!");
+		return;
+	}
+
+	for (size_t i = 0; i < 32; i += 2)
+	{
+		auto val = static_cast<UInt8>(HexDigitValue(a_UUID[i]) << 4 | HexDigitValue(a_UUID[i + 1]));
+		VERIFY(m_Out.WriteBEUInt8(val));
+	}
+}
+
+
+
+
diff --git a/src/Protocol/Packetizer.h b/src/Protocol/Packetizer.h
new file mode 100644
index 000000000..7f5e9c2c3
--- /dev/null
+++ b/src/Protocol/Packetizer.h
@@ -0,0 +1,155 @@
+
+// Packetizer.h
+
+// Declares the cPacketizer class representing a wrapper for sending a single packet over a protocol.
+// The class provides auto-locking, serialization and send-on-instance-destroy semantics
+
+
+
+
+
+#pragma once
+
+#include "Protocol.h"
+#include "../ByteBuffer.h"
+
+
+
+
+
+/** Composes an individual packet in the protocol's m_OutPacketBuffer; sends it just before being destructed. */
+class cPacketizer
+{
+public:
+	/** Starts serializing a new packet into the protocol's m_OutPacketBuffer.
+	Locks the protocol's m_CSPacket to avoid multithreading issues. */
+	cPacketizer(cProtocol & a_Protocol, UInt32 a_PacketType) :
+		m_Protocol(a_Protocol),
+		m_Out(a_Protocol.m_OutPacketBuffer),
+		m_Lock(a_Protocol.m_CSPacket),
+		m_PacketType(a_PacketType)  // Used for logging purposes
+	{
+		m_Out.WriteVarInt32(a_PacketType);
+	}
+
+	/** Sends the packet via the contained protocol's SendPacket() function. */
+	~cPacketizer();
+
+	inline void WriteBool(bool a_Value)
+	{
+		VERIFY(m_Out.WriteBool(a_Value));
+	}
+
+	inline void WriteBEUInt8(UInt8 a_Value)
+	{
+		VERIFY(m_Out.WriteBEUInt8(a_Value));
+	}
+
+
+	inline void WriteBEInt8(Int8 a_Value)
+	{
+		VERIFY(m_Out.WriteBEInt8(a_Value));
+	}
+
+
+	inline void WriteBEInt16(Int16 a_Value)
+	{
+		VERIFY(m_Out.WriteBEInt16(a_Value));
+	}
+
+
+	inline void WriteBEUInt16(short a_Value)
+	{
+		VERIFY(m_Out.WriteBEUInt16(a_Value));
+	}
+
+
+	inline void WriteBEInt32(Int32 a_Value)
+	{
+		VERIFY(m_Out.WriteBEInt32(a_Value));
+	}
+
+
+	inline void WriteBEUInt32(UInt32 a_Value)
+	{
+		VERIFY(m_Out.WriteBEUInt32(a_Value));
+	}
+
+
+	inline void WriteBEInt64(Int64 a_Value)
+	{
+		VERIFY(m_Out.WriteBEInt64(a_Value));
+	}
+
+
+	inline void WriteBEUInt64(UInt64 a_Value)
+	{
+		VERIFY(m_Out.WriteBEUInt64(a_Value));
+	}
+
+
+	inline void WriteBEFloat(float a_Value)
+	{
+		VERIFY(m_Out.WriteBEFloat(a_Value));
+	}
+
+
+	inline void WriteBEDouble(double a_Value)
+	{
+		VERIFY(m_Out.WriteBEDouble(a_Value));
+	}
+
+
+	inline void WriteVarInt32(UInt32 a_Value)
+	{
+		VERIFY(m_Out.WriteVarInt32(a_Value));
+	}
+
+
+	inline void WriteString(const AString & a_Value)
+	{
+		VERIFY(m_Out.WriteVarUTF8String(a_Value));
+	}
+
+
+	inline void WriteBuf(const char * a_Data, size_t a_Size)
+	{
+		VERIFY(m_Out.Write(a_Data, a_Size));
+	}
+
+
+	/** Writes the specified block position as a single encoded 64-bit BigEndian integer. */
+	inline void WritePosition64(int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		VERIFY(m_Out.WritePosition64(a_BlockX, a_BlockY, a_BlockZ));
+	}
+
+	/** Writes the specified angle using a single byte. */
+	void WriteByteAngle(double a_Angle);
+
+	/** Writes the double value as a 27:5 fixed-point integer. */
+	void WriteFPInt(double a_Value);
+
+	/** Writes the specified UUID as a 128-bit BigEndian integer. */
+	void WriteUUID(const AString & a_UUID);
+
+	UInt32 GetPacketType(void) const { return m_PacketType; }
+
+protected:
+	/** The protocol instance in which the packet is being constructed. */
+	cProtocol & m_Protocol;
+
+	/** The protocol's buffer for the constructed packet data. */
+	cByteBuffer & m_Out;
+
+	/** The RAII lock preventing multithreaded access to the protocol buffer while constructing the packet. */
+	cCSLock m_Lock;
+
+	/** Type of the contained packet.
+	Used for logging purposes, the packet type is encoded into m_Out immediately in constructor. */
+	UInt32 m_PacketType;
+} ;
+
+
+
+
diff --git a/src/Protocol/Protocol.h b/src/Protocol/Protocol.h
index 02a8a52f6..d8399049e 100644
--- a/src/Protocol/Protocol.h
+++ b/src/Protocol/Protocol.h
@@ -14,6 +14,7 @@
 #include "../Endianness.h"
 #include "../Scoreboard.h"
 #include "../Map.h"
+#include "../ByteBuffer.h"
 
 
 
@@ -32,6 +33,7 @@ class cChunkDataSerializer;
 class cFallingBlock;
 class cCompositeChat;
 class cStatManager;
+class cPacketizer;
 
 
 
@@ -47,7 +49,9 @@ class cProtocol
 {
 public:
 	cProtocol(cClientHandle * a_Client) :
-		m_Client(a_Client)
+		m_Client(a_Client),
+		m_OutPacketBuffer(64 KiB),
+		m_OutPacketLenBuffer(20)  // 20 bytes is more than enough for one VarInt
 	{
 	}
 
@@ -59,7 +63,7 @@ public:
 	// Sending stuff to clients (alphabetically sorted):
 	virtual void SendAttachEntity               (const cEntity & a_Entity, const cEntity * a_Vehicle) = 0;
 	virtual void SendBlockAction                (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) = 0;
-	virtual void SendBlockBreakAnim             (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) = 0;
+	virtual void SendBlockBreakAnim             (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) = 0;
 	virtual void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) = 0;
 	virtual void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) = 0;
 	virtual void SendChat                       (const AString & a_Message) = 0;
@@ -136,11 +140,27 @@ public:
 	virtual AString GetAuthServerID(void) = 0;
 
 protected:
+	friend class cPacketizer;
+
 	cClientHandle * m_Client;
-	cCriticalSection m_CSPacket;  // Each SendXYZ() function must acquire this CS in order to send the whole packet at once
 
-	/// A generic data-sending routine, all outgoing packet data needs to be routed through this so that descendants may override it
+	/** Provides synchronization for sending the entire packet at once.
+	Each SendXYZ() function must acquire this CS in order to send the whole packet at once.
+	Automated via cPacketizer class. */
+	cCriticalSection m_CSPacket;
+
+	/** Buffer for composing the outgoing packets, through cPacketizer */
+	cByteBuffer m_OutPacketBuffer;
+	
+	/** Buffer for composing packet length (so that each cPacketizer instance doesn't allocate a new cPacketBuffer) */
+	cByteBuffer m_OutPacketLenBuffer;
+	
+	/** A generic data-sending routine, all outgoing packet data needs to be routed through this so that descendants may override it. */
 	virtual void SendData(const char * a_Data, size_t a_Size) = 0;
+
+	/** Sends a single packet contained within the cPacketizer class.
+	The cPacketizer's destructor calls this to send the contained packet; protocol may transform the data (compression in 1.8 etc). */
+	virtual void SendPacket(cPacketizer & a_Packet) = 0;
 } ;
 
 
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 9abe81238..2bc58e7e5 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -14,6 +14,7 @@ Implements the 1.7.x protocol classes:
 #include "Protocol17x.h"
 #include "ChunkDataSerializer.h"
 #include "PolarSSL++/Sha1Checksum.h"
+#include "Packetizer.h"
 
 #include "../ClientHandle.h"
 #include "../Root.h"
@@ -50,6 +51,13 @@ Implements the 1.7.x protocol classes:
 
 
 
+/** The slot number that the client uses to indicate "outside the window". */
+static const Int16 SLOT_NUM_OUTSIDE = -999;
+
+
+
+
+
 #define HANDLE_READ(ByteBuf, Proc, Type, Var) \
 	Type Var; \
 	if (!ByteBuf.Proc(Var))\
@@ -98,8 +106,6 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 	m_ServerPort(a_ServerPort),
 	m_State(a_State),
 	m_ReceivedData(32 KiB),
-	m_OutPacketBuffer(64 KiB),
-	m_OutPacketLenBuffer(20),  // 20 bytes is more than enough for one VarInt
 	m_IsEncrypted(false),
 	m_LastSentDimension(dimNotSet)
 {
@@ -159,8 +165,8 @@ void cProtocol172::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x1b);  // Attach Entity packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteInt((a_Vehicle != nullptr) ? a_Vehicle->GetUniqueID() : 0);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt32((a_Vehicle != nullptr) ? a_Vehicle->GetUniqueID() : 0);
 	Pkt.WriteBool(false);
 }
 
@@ -173,28 +179,28 @@ void cProtocol172::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x24);  // Block Action packet
-	Pkt.WriteInt(a_BlockX);
-	Pkt.WriteShort(static_cast<short>(a_BlockY));
-	Pkt.WriteInt(a_BlockZ);
-	Pkt.WriteByte(static_cast<Byte>(a_Byte1));
-	Pkt.WriteByte(static_cast<Byte>(a_Byte2));
-	Pkt.WriteVarInt(a_BlockType);
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEInt16(static_cast<Int16>(a_BlockY));
+	Pkt.WriteBEInt32(a_BlockZ);
+	Pkt.WriteBEInt8(a_Byte1);
+	Pkt.WriteBEInt8(a_Byte2);
+	Pkt.WriteVarInt32(a_BlockType);
 }
 
 
 
 
 
-void cProtocol172::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
+void cProtocol172::SendBlockBreakAnim(UInt32 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(static_cast<UInt32>(a_EntityID));
-	Pkt.WriteInt(a_BlockX);
-	Pkt.WriteInt(a_BlockY);
-	Pkt.WriteInt(a_BlockZ);
-	Pkt.WriteChar(a_Stage);
+	Pkt.WriteVarInt32(a_EntityID);
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEInt32(a_BlockY);
+	Pkt.WriteBEInt32(a_BlockZ);
+	Pkt.WriteBEInt8(a_Stage);
 }
 
 
@@ -207,11 +213,11 @@ void cProtocol172::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 	ASSERT((a_BlockY >= 0) && (a_BlockY < 256));
 	
 	cPacketizer Pkt(*this, 0x23);  // Block Change packet
-	Pkt.WriteInt(a_BlockX);
-	Pkt.WriteByte(static_cast<Byte>(a_BlockY));
-	Pkt.WriteInt(a_BlockZ);
-	Pkt.WriteVarInt(a_BlockType);
-	Pkt.WriteByte(a_BlockMeta);
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEUInt8(static_cast<UInt8>(a_BlockY));
+	Pkt.WriteBEInt32(a_BlockZ);
+	Pkt.WriteVarInt32(a_BlockType);
+	Pkt.WriteBEUInt8(a_BlockMeta);
 }
 
 
@@ -223,15 +229,15 @@ void cProtocol172::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockV
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x22);  // Multi Block Change packet
-	Pkt.WriteInt(a_ChunkX);
-	Pkt.WriteInt(a_ChunkZ);
-	Pkt.WriteShort((short)a_Changes.size());
-	Pkt.WriteInt((int)a_Changes.size() * 4);
+	Pkt.WriteBEInt32(a_ChunkX);
+	Pkt.WriteBEInt32(a_ChunkZ);
+	Pkt.WriteBEUInt16(static_cast<UInt16>(a_Changes.size()));
+	Pkt.WriteBEUInt32(static_cast<UInt32>(a_Changes.size() * 4));
 	for (sSetBlockVector::const_iterator itr = a_Changes.begin(), end = a_Changes.end(); itr != end; ++itr)
 	{
 		int Coords = itr->m_RelY | (itr->m_RelZ << 8) | (itr->m_RelX << 12);
 		int Blocks = static_cast<int>(itr->m_BlockMeta | (itr->m_BlockType << 4));
-		Pkt.WriteInt((Coords << 16) | Blocks);
+		Pkt.WriteBEInt32((Coords << 16) | Blocks);
 	}  // for itr - a_Changes[]
 }
 
@@ -276,8 +282,8 @@ void cProtocol172::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerialize
 	const AString & ChunkData = a_Serializer.Serialize(cChunkDataSerializer::RELEASE_1_3_2, a_ChunkX, a_ChunkZ);
 	
 	cPacketizer Pkt(*this, 0x21);  // Chunk Data packet
-	Pkt.WriteInt(a_ChunkX);
-	Pkt.WriteInt(a_ChunkZ);
+	Pkt.WriteBEInt32(a_ChunkX);
+	Pkt.WriteBEInt32(a_ChunkZ);
 	Pkt.WriteBuf(ChunkData.data(), ChunkData.size());
 }
 
@@ -290,8 +296,8 @@ void cProtocol172::SendCollectEntity(const cEntity & a_Entity, const cPlayer & a
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0d);  // Collect Item packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteInt(a_Player.GetUniqueID());
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt32(a_Player.GetUniqueID());
 }
 
 
@@ -303,8 +309,8 @@ 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());
+	Pkt.WriteBEUInt8(1);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
 }
 
 
@@ -341,9 +347,9 @@ 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);
-	Pkt.WriteInt(a_BlockZ);
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEInt32(a_BlockY);
+	Pkt.WriteBEInt32(a_BlockZ);
 }
 
 
@@ -357,10 +363,10 @@ void cProtocol172::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, in
 	ASSERT((a_Amplifier >= 0) && (a_Amplifier < 256));
 	
 	cPacketizer Pkt(*this, 0x1D);  // Entity Effect packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(static_cast<Byte>(a_EffectID));
-	Pkt.WriteByte(static_cast<Byte>(a_Amplifier));
-	Pkt.WriteShort(a_Duration);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_EffectID));
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_Amplifier));
+	Pkt.WriteBEInt16(a_Duration);
 }
 
 
@@ -372,9 +378,9 @@ void cProtocol172::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x04);  // Entity Equipment packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteShort(a_SlotNum);
-	Pkt.WriteItem(a_Item);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt16(a_SlotNum);
+	WriteItem(Pkt, a_Item);
 }
 
 
@@ -386,7 +392,7 @@ 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.WriteBEUInt32(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetHeadYaw());
 }
 
@@ -399,7 +405,7 @@ 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.WriteBEUInt32(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 }
@@ -413,9 +419,9 @@ 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);
-	Pkt.WriteByte(0x7f);  // The termination byte
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	WriteEntityMetadata(Pkt, a_Entity);
+	Pkt.WriteBEUInt8(0x7f);  // The termination byte
 }
 
 
@@ -427,8 +433,8 @@ 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);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	WriteEntityProperties(Pkt, a_Entity);
 }
 
 
@@ -440,10 +446,10 @@ void cProtocol172::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x15);  // Entity Relative Move packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteChar(a_RelX);
-	Pkt.WriteChar(a_RelY);
-	Pkt.WriteChar(a_RelZ);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_RelX);
+	Pkt.WriteBEInt8(a_RelY);
+	Pkt.WriteBEInt8(a_RelZ);
 }
 
 
@@ -455,10 +461,10 @@ void cProtocol172::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX,
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x17);  // Entity Look And Relative Move packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteChar(a_RelX);
-	Pkt.WriteChar(a_RelY);
-	Pkt.WriteChar(a_RelZ);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_RelX);
+	Pkt.WriteBEInt8(a_RelY);
+	Pkt.WriteBEInt8(a_RelZ);
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 }
@@ -472,8 +478,8 @@ 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);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_Status);
 }
 
 
@@ -485,11 +491,11 @@ 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());
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
 	// 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick
-	Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400));
-	Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400));
-	Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedX() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedY() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedZ() * 400));
 }
 
 
@@ -501,20 +507,20 @@ void cProtocol172::SendExplosion(double a_BlockX, double a_BlockY, double a_Bloc
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x27);  // Explosion packet
-	Pkt.WriteFloat((float)a_BlockX);
-	Pkt.WriteFloat((float)a_BlockY);
-	Pkt.WriteFloat((float)a_BlockZ);
-	Pkt.WriteFloat((float)a_Radius);
-	Pkt.WriteInt((int)a_BlocksAffected.size());
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockX));
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockY));
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockZ));
+	Pkt.WriteBEFloat(static_cast<float>(a_Radius));
+	Pkt.WriteBEUInt32(static_cast<UInt32>(a_BlocksAffected.size()));
 	for (cVector3iArray::const_iterator itr = a_BlocksAffected.begin(), end = a_BlocksAffected.end(); itr != end; ++itr)
 	{
-		Pkt.WriteChar((char)itr->x);
-		Pkt.WriteChar((char)itr->y);
-		Pkt.WriteChar((char)itr->z);
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->x));
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->y));
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->z));
 	}  // for itr - a_BlockAffected[]
-	Pkt.WriteFloat((float)a_PlayerMotion.x);
-	Pkt.WriteFloat((float)a_PlayerMotion.y);
-	Pkt.WriteFloat((float)a_PlayerMotion.z);
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.x));
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.y));
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.z));
 }
 
 
@@ -526,8 +532,8 @@ 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);
+	Pkt.WriteBEUInt8(3);  // Reason: Change game mode
+	Pkt.WriteBEFloat(static_cast<float>(a_GameMode));  // The protocol really represents the value with a float!
 }
 
 
@@ -540,9 +546,9 @@ void cProtocol172::SendHealth(void)
 	
 	cPacketizer Pkt(*this, 0x06);  // Update Health packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteFloat(static_cast<float>(Player->GetHealth()));
-	Pkt.WriteShort(static_cast<short>(Player->GetFoodLevel()));
-	Pkt.WriteFloat(static_cast<float>(Player->GetFoodSaturationLevel()));
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetHealth()));
+	Pkt.WriteBEInt16(static_cast<short>(Player->GetFoodLevel()));
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetFoodSaturationLevel()));
 }
 
 
@@ -554,9 +560,9 @@ void cProtocol172::SendInventorySlot(char a_WindowID, short a_SlotNum, const cIt
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x2f);  // Set Slot packet
-	Pkt.WriteChar(a_WindowID);
-	Pkt.WriteShort(a_SlotNum);
-	Pkt.WriteItem(a_Item);
+	Pkt.WriteBEInt8(a_WindowID);
+	Pkt.WriteBEInt16(a_SlotNum);
+	WriteItem(Pkt, a_Item);
 }
 
 
@@ -573,7 +579,7 @@ void cProtocol172::SendKeepAlive(int a_PingID)
 	}
 	
 	cPacketizer Pkt(*this, 0x00);  // Keep Alive packet
-	Pkt.WriteInt(a_PingID);
+	Pkt.WriteBEInt32(a_PingID);
 }
 
 
@@ -586,11 +592,11 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 	{
 		cServer * Server = cRoot::Get()->GetServer();
 		cPacketizer Pkt(*this, 0x01);  // Join Game packet
-		Pkt.WriteInt(a_Player.GetUniqueID());
-		Pkt.WriteByte(static_cast<Byte>(a_Player.GetEffectiveGameMode()) | (Server->IsHardcore() ? 0x08 : 0));  // Hardcore flag bit 4
-		Pkt.WriteChar(static_cast<char>(a_World.GetDimension()));
-		Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-		Pkt.WriteByte(static_cast<Byte>(std::min(Server->GetMaxPlayers(), 60)));
+		Pkt.WriteBEUInt32(a_Player.GetUniqueID());
+		Pkt.WriteBEUInt8(static_cast<Byte>(a_Player.GetEffectiveGameMode()) | (Server->IsHardcore() ? 0x08 : 0));  // Hardcore flag bit 4
+		Pkt.WriteBEInt8(static_cast<char>(a_World.GetDimension()));
+		Pkt.WriteBEUInt8(2);  // TODO: Difficulty (set to Normal)
+		Pkt.WriteBEUInt8(static_cast<Byte>(std::min(Server->GetMaxPlayers(), 60)));
 		Pkt.WriteString("default");  // Level type - wtf?
 	}
 	m_LastSentDimension = a_World.GetDimension();
@@ -598,9 +604,9 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 	// Send the spawn position:
 	{
 		cPacketizer Pkt(*this, 0x05);  // Spawn Position packet
-		Pkt.WriteInt(static_cast<int>(a_World.GetSpawnX()));
-		Pkt.WriteInt(static_cast<int>(a_World.GetSpawnY()));
-		Pkt.WriteInt(static_cast<int>(a_World.GetSpawnZ()));
+		Pkt.WriteBEInt32(static_cast<int>(a_World.GetSpawnX()));
+		Pkt.WriteBEInt32(static_cast<int>(a_World.GetSpawnY()));
+		Pkt.WriteBEInt32(static_cast<int>(a_World.GetSpawnZ()));
 	}
 	
 	// Send player abilities:
@@ -632,19 +638,19 @@ void cProtocol172::SendPaintingSpawn(const cPainting & a_Painting)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x10);  // Spawn Painting packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Painting.GetUniqueID()));
+	Pkt.WriteVarInt32(a_Painting.GetUniqueID());
 	Pkt.WriteString(a_Painting.GetName().c_str());
-	Pkt.WriteInt(static_cast<int>(a_Painting.GetPosX()));
-	Pkt.WriteInt(static_cast<int>(a_Painting.GetPosY()));
-	Pkt.WriteInt(static_cast<int>(a_Painting.GetPosZ()));
-	Pkt.WriteInt(a_Painting.GetProtocolFacing());
+	Pkt.WriteBEInt32(static_cast<int>(a_Painting.GetPosX()));
+	Pkt.WriteBEInt32(static_cast<int>(a_Painting.GetPosY()));
+	Pkt.WriteBEInt32(static_cast<int>(a_Painting.GetPosZ()));
+	Pkt.WriteBEInt32(a_Painting.GetProtocolFacing());
 }
 
 
 
 
 
-void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length, unsigned int m_Scale)
+void cProtocol172::SendMapColumn(int a_MapID, int a_X, int a_Y, const Byte * a_Colors, unsigned int a_Length, unsigned int m_Scale)
 {
 	ASSERT(m_State == 3);  // In game mode?
 	ASSERT(a_Length + 3 <= USHRT_MAX);
@@ -652,12 +658,12 @@ void cProtocol172::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colo
 	ASSERT((a_Y >= 0) && (a_Y < 256));
 	
 	cPacketizer Pkt(*this, 0x34);
-	Pkt.WriteVarInt(static_cast<UInt32>(a_ID));
-	Pkt.WriteShort (static_cast<short>(3 + a_Length));
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_MapID));
+	Pkt.WriteBEUInt16(static_cast<UInt16>(3 + a_Length));
 
-	Pkt.WriteByte(0);
-	Pkt.WriteByte(static_cast<Byte>(a_X));
-	Pkt.WriteByte(static_cast<Byte>(a_Y));
+	Pkt.WriteBEUInt8(0);
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_X));
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_Y));
 	
 	Pkt.WriteBuf(reinterpret_cast<const char *>(a_Colors), a_Length);
 }
@@ -666,24 +672,24 @@ 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, unsigned int m_Scale)
+void cProtocol172::SendMapDecorators(int a_MapID, const cMapDecoratorList & a_Decorators, unsigned int m_Scale)
 {
 	ASSERT(m_State == 3);  // In game mode?
 	ASSERT(1 + 3 * a_Decorators.size() < USHRT_MAX);
 	
 	cPacketizer Pkt(*this, 0x34);
-	Pkt.WriteVarInt(static_cast<UInt32>(a_ID));
-	Pkt.WriteShort (static_cast<short>(1 + (3 * a_Decorators.size())));
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_MapID));
+	Pkt.WriteBEUInt16(static_cast<UInt16>(1 + (3 * a_Decorators.size())));
 
-	Pkt.WriteByte(1);
+	Pkt.WriteBEUInt8(1);
 	
 	for (cMapDecoratorList::const_iterator it = a_Decorators.begin(); it != a_Decorators.end(); ++it)
 	{
 		ASSERT(it->GetPixelX() < 256);
 		ASSERT(it->GetPixelZ() < 256);
-		Pkt.WriteByte(static_cast<Byte>((it->GetType() << 4) | static_cast<Byte>(it->GetRot() & 0xf)));
-		Pkt.WriteByte(static_cast<Byte>(it->GetPixelX()));
-		Pkt.WriteByte(static_cast<Byte>(it->GetPixelZ()));
+		Pkt.WriteBEUInt8(static_cast<Byte>((it->GetType() << 4) | static_cast<Byte>(it->GetRot() & 0xf)));
+		Pkt.WriteBEUInt8(static_cast<Byte>(it->GetPixelX()));
+		Pkt.WriteBEUInt8(static_cast<Byte>(it->GetPixelZ()));
 	}
 }
 
@@ -691,17 +697,17 @@ void cProtocol172::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 
 
 
-void cProtocol172::SendMapInfo(int a_ID, unsigned int a_Scale)
+void cProtocol172::SendMapInfo(int a_MapID, unsigned int a_Scale)
 {
 	ASSERT(m_State == 3);  // In game mode?
 	ASSERT(a_Scale < 256);
 	
 	cPacketizer Pkt(*this, 0x34);
-	Pkt.WriteVarInt(static_cast<UInt32>(a_ID));
-	Pkt.WriteShort (2);
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_MapID));
+	Pkt.WriteBEUInt16(2);
 
-	Pkt.WriteByte(2);
-	Pkt.WriteByte(static_cast<Byte>(a_Scale));
+	Pkt.WriteBEUInt8(2);
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_Scale));
 }
 
 
@@ -714,21 +720,21 @@ void cProtocol172::SendPickupSpawn(const cPickup & a_Pickup)
 	
 	{
 		cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
-		Pkt.WriteVarInt(static_cast<UInt32>(a_Pickup.GetUniqueID()));
-		Pkt.WriteByte(2);  // Type = Pickup
+		Pkt.WriteVarInt32(a_Pickup.GetUniqueID());
+		Pkt.WriteBEUInt8(2);  // Type = Pickup
 		Pkt.WriteFPInt(a_Pickup.GetPosX());
 		Pkt.WriteFPInt(a_Pickup.GetPosY());
 		Pkt.WriteFPInt(a_Pickup.GetPosZ());
 		Pkt.WriteByteAngle(a_Pickup.GetYaw());
 		Pkt.WriteByteAngle(a_Pickup.GetPitch());
-		Pkt.WriteInt(0);  // No object data
+		Pkt.WriteBEInt32(0);  // No object data
 	}
 	{
 		cPacketizer Pkt(*this, 0x1c);  // Entity Metadata packet
-		Pkt.WriteInt(a_Pickup.GetUniqueID());
-		Pkt.WriteByte((0x05 << 5) | 10);  // Slot type + index 10
-		Pkt.WriteItem(a_Pickup.GetItem());
-		Pkt.WriteByte(0x7f);  // End of metadata
+		Pkt.WriteBEUInt32(a_Pickup.GetUniqueID());
+		Pkt.WriteBEUInt8((0x05 << 5) | 10);  // Slot type + index 10
+		WriteItem(Pkt, a_Pickup.GetItem());
+		Pkt.WriteBEUInt8(0x7f);  // End of metadata
 	}
 }
 
@@ -756,9 +762,9 @@ void cProtocol172::SendPlayerAbilities(void)
 	{
 		Flags |= 0x04;
 	}
-	Pkt.WriteByte(Flags);
-	Pkt.WriteFloat((float)(0.05 * Player->GetFlyingMaxSpeed()));
-	Pkt.WriteFloat((float)(0.1 * Player->GetNormalMaxSpeed()));
+	Pkt.WriteBEUInt8(Flags);
+	Pkt.WriteBEFloat(static_cast<float>(0.05 * Player->GetFlyingMaxSpeed()));
+	Pkt.WriteBEFloat(static_cast<float>(0.1 * Player->GetNormalMaxSpeed()));
 }
 
 
@@ -770,8 +776,8 @@ void cProtocol172::SendEntityAnimation(const cEntity & a_Entity, char a_Animatio
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0b);  // Animation packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Entity.GetUniqueID()));
-	Pkt.WriteChar(a_Animation);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_Animation);
 }
 
 
@@ -784,14 +790,14 @@ void cProtocol172::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 	
 	cPacketizer Pkt(*this, 0x2A);
 	Pkt.WriteString(a_ParticleName);
-	Pkt.WriteFloat(a_SrcX);
-	Pkt.WriteFloat(a_SrcY);
-	Pkt.WriteFloat(a_SrcZ);
-	Pkt.WriteFloat(a_OffsetX);
-	Pkt.WriteFloat(a_OffsetY);
-	Pkt.WriteFloat(a_OffsetZ);
-	Pkt.WriteFloat(a_ParticleData);
-	Pkt.WriteInt(a_ParticleAmount);
+	Pkt.WriteBEFloat(a_SrcX);
+	Pkt.WriteBEFloat(a_SrcY);
+	Pkt.WriteBEFloat(a_SrcZ);
+	Pkt.WriteBEFloat(a_OffsetX);
+	Pkt.WriteBEFloat(a_OffsetY);
+	Pkt.WriteBEFloat(a_OffsetZ);
+	Pkt.WriteBEFloat(a_ParticleData);
+	Pkt.WriteBEInt32(a_ParticleAmount);
 }
 
 
@@ -805,7 +811,7 @@ void cProtocol172::SendPlayerListAddPlayer(const cPlayer & a_Player)
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
 	Pkt.WriteString(a_Player.GetPlayerListName());
 	Pkt.WriteBool(true);
-	Pkt.WriteShort(a_Player.GetClientHandle()->GetPing());
+	Pkt.WriteBEInt16(a_Player.GetClientHandle()->GetPing());
 }
 
 
@@ -819,7 +825,7 @@ void cProtocol172::SendPlayerListRemovePlayer(const cPlayer & a_Player)
 	cPacketizer Pkt(*this, 0x38);
 	Pkt.WriteString(a_Player.GetPlayerListName());
 	Pkt.WriteBool(false);
-	Pkt.WriteShort(0);
+	Pkt.WriteBEInt16(0);
 }
 
 
@@ -863,22 +869,22 @@ void cProtocol172::SendPlayerMaxSpeed(void)
 	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteInt(Player->GetUniqueID());
-	Pkt.WriteInt(1);  // Count
+	Pkt.WriteBEUInt32(Player->GetUniqueID());
+	Pkt.WriteBEInt32(1);  // Count
 	Pkt.WriteString("generic.movementSpeed");
 	// The default game speed is 0.1, multiply that value by the relative speed:
-	Pkt.WriteDouble(0.1 * Player->GetNormalMaxSpeed());
+	Pkt.WriteBEDouble(0.1 * Player->GetNormalMaxSpeed());
 	if (Player->IsSprinting())
 	{
-		Pkt.WriteShort(1);  // Modifier count
-		Pkt.WriteInt64(0x662a6b8dda3e4c1c);
-		Pkt.WriteInt64(static_cast<Int64>(0x881396ea6097278d));  // UUID of the modifier
-		Pkt.WriteDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
-		Pkt.WriteByte(2);
+		Pkt.WriteBEInt16(1);  // Modifier count
+		Pkt.WriteBEUInt64(0x662a6b8dda3e4c1c);
+		Pkt.WriteBEUInt64(0x881396ea6097278d);  // UUID of the modifier
+		Pkt.WriteBEDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
+		Pkt.WriteBEUInt8(2);
 	}
 	else
 	{
-		Pkt.WriteShort(0);  // Modifier count
+		Pkt.WriteBEInt16(0);  // Modifier count
 	}
 }
 
@@ -892,15 +898,15 @@ void cProtocol172::SendPlayerMoveLook(void)
 	
 	cPacketizer Pkt(*this, 0x08);  // Player Position And Look packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteDouble(Player->GetPosX());
+	Pkt.WriteBEDouble(Player->GetPosX());
 	
 	// Protocol docs say this is PosY, but #323 says this is eye-pos
 	// Moreover, the "+ 0.001" is there because otherwise the player falls through the block they were standing on.
-	Pkt.WriteDouble(Player->GetStance() + 0.001);
+	Pkt.WriteBEDouble(Player->GetStance() + 0.001);
 	
-	Pkt.WriteDouble(Player->GetPosZ());
-	Pkt.WriteFloat((float)Player->GetYaw());
-	Pkt.WriteFloat((float)Player->GetPitch());
+	Pkt.WriteBEDouble(Player->GetPosZ());
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetYaw()));
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetPitch()));
 	Pkt.WriteBool(Player->IsOnGround());
 }
 
@@ -924,7 +930,7 @@ void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 	
 	// Called to spawn another player for the client
 	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
-	Pkt.WriteVarInt((UInt32) a_Player.GetUniqueID());
+	Pkt.WriteVarInt32(a_Player.GetUniqueID());
 	Pkt.WriteString(cMojangAPI::MakeUUIDDashed(a_Player.GetClientHandle()->GetUUID()));
 	if (a_Player.HasCustomName())
 	{
@@ -940,10 +946,10 @@ void cProtocol172::SendPlayerSpawn(const cPlayer & a_Player)
 	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
+	Pkt.WriteBEInt16(ItemType);
+	Pkt.WriteBEUInt8((3 << 5) | 6);  // Metadata: float + index 6
+	Pkt.WriteBEFloat(static_cast<float>(a_Player.GetHealth()));
+	Pkt.WriteBEUInt8(0x7f);  // Metadata: end
 }
 
 
@@ -953,10 +959,11 @@ 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?
+	ASSERT(a_Message.size() <= std::numeric_limits<UInt16>::max());
 	
 	cPacketizer Pkt(*this, 0x3f);
 	Pkt.WriteString(a_Channel);
-	Pkt.WriteShort((short)a_Message.size());
+	Pkt.WriteBEUInt16(static_cast<UInt16>(a_Message.size()));
 	Pkt.WriteBuf(a_Message.data(), a_Message.size());
 }
 
@@ -970,8 +977,8 @@ void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_Effect
 	ASSERT((a_EffectID >= 0) && (a_EffectID < 256));
 	
 	cPacketizer Pkt(*this, 0x1e);
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(static_cast<Byte>(a_EffectID));
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_EffectID));
 }
 
 
@@ -988,9 +995,9 @@ void cProtocol172::SendRespawn(eDimension a_Dimension, bool a_ShouldIgnoreDimens
 
 	cPacketizer Pkt(*this, 0x07);  // Respawn packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteInt((int)a_Dimension);
-	Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-	Pkt.WriteByte((Byte)Player->GetEffectiveGameMode());
+	Pkt.WriteBEInt32((int)a_Dimension);
+	Pkt.WriteBEUInt8(2);  // TODO: Difficulty (set to Normal)
+	Pkt.WriteBEUInt8((Byte)Player->GetEffectiveGameMode());
 	Pkt.WriteString("default");
 	m_LastSentDimension = a_Dimension;
 }
@@ -1005,9 +1012,9 @@ void cProtocol172::SendExperience (void)
 	
 	cPacketizer Pkt(*this, 0x1f);  // Experience Packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteFloat(Player->GetXpPercentage());
-	Pkt.WriteShort(Player->GetXpLevel());
-	Pkt.WriteShort(Player->GetCurrentXp());
+	Pkt.WriteBEFloat(Player->GetXpPercentage());
+	Pkt.WriteBEInt16(static_cast<UInt16>(std::max<int>(Player->GetXpLevel(), std::numeric_limits<UInt16>::max())));
+	Pkt.WriteBEInt16(static_cast<UInt16>(std::max<int>(Player->GetCurrentXp(), std::numeric_limits<UInt16>::max())));
 }
 
 
@@ -1020,11 +1027,11 @@ void cProtocol172::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 	ASSERT((a_ExpOrb.GetReward() >= 0) && (a_ExpOrb.GetReward() < SHRT_MAX));
 	
 	cPacketizer Pkt(*this, 0x11);
-	Pkt.WriteVarInt(static_cast<UInt32>(a_ExpOrb.GetUniqueID()));
+	Pkt.WriteVarInt32(a_ExpOrb.GetUniqueID());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosX());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosY());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosZ());
-	Pkt.WriteShort(static_cast<short>(a_ExpOrb.GetReward()));
+	Pkt.WriteBEInt16(static_cast<short>(a_ExpOrb.GetReward()));
 }
 
 
@@ -1038,7 +1045,7 @@ void cProtocol172::SendScoreboardObjective(const AString & a_Name, const AString
 	cPacketizer Pkt(*this, 0x3b);
 	Pkt.WriteString(a_Name);
 	Pkt.WriteString(a_DisplayName);
-	Pkt.WriteByte(a_Mode);
+	Pkt.WriteBEUInt8(a_Mode);
 }
 
 
@@ -1051,12 +1058,12 @@ void cProtocol172::SendScoreUpdate(const AString & a_Objective, const AString &
 	
 	cPacketizer Pkt(*this, 0x3c);
 	Pkt.WriteString(a_Player);
-	Pkt.WriteByte(a_Mode);
+	Pkt.WriteBEUInt8(a_Mode);
 
 	if (a_Mode != 1)
 	{
 		Pkt.WriteString(a_Objective);
-		Pkt.WriteInt((int) a_Score);
+		Pkt.WriteBEInt32((int) a_Score);
 	}
 }
 
@@ -1069,7 +1076,7 @@ void cProtocol172::SendDisplayObjective(const AString & a_Objective, cScoreboard
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x3d);
-	Pkt.WriteByte(static_cast<Byte>(a_Display));
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_Display));
 	Pkt.WriteString(a_Objective);
 }
 
@@ -1083,11 +1090,11 @@ void cProtocol172::SendSoundEffect(const AString & a_SoundName, double a_X, doub
 
 	cPacketizer Pkt(*this, 0x29);  // Sound Effect packet
 	Pkt.WriteString(a_SoundName);
-	Pkt.WriteInt(static_cast<int>(a_X * 8.0));
-	Pkt.WriteInt(static_cast<int>(a_Y * 8.0));
-	Pkt.WriteInt(static_cast<int>(a_Z * 8.0));
-	Pkt.WriteFloat(a_Volume);
-	Pkt.WriteByte(static_cast<Byte>(a_Pitch * 63));
+	Pkt.WriteBEInt32(static_cast<int>(a_X * 8.0));
+	Pkt.WriteBEInt32(static_cast<int>(a_Y * 8.0));
+	Pkt.WriteBEInt32(static_cast<int>(a_Z * 8.0));
+	Pkt.WriteBEFloat(a_Volume);
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_Pitch * 63));
 }
 
 
@@ -1100,11 +1107,11 @@ void cProtocol172::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 	ASSERT((a_SrcY >= 0) && (a_SrcY < 256));
 	
 	cPacketizer Pkt(*this, 0x28);  // Effect packet
-	Pkt.WriteInt(a_EffectID);
-	Pkt.WriteInt(a_SrcX);
-	Pkt.WriteByte(static_cast<Byte>(a_SrcY));
-	Pkt.WriteInt(a_SrcZ);
-	Pkt.WriteInt(a_Data);
+	Pkt.WriteBEInt32(a_EffectID);
+	Pkt.WriteBEInt32(a_SrcX);
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_SrcY));
+	Pkt.WriteBEInt32(a_SrcZ);
+	Pkt.WriteBEInt32(a_Data);
 	Pkt.WriteBool(false);
 }
 
@@ -1117,17 +1124,17 @@ void cProtocol172::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_FallingBlock.GetUniqueID()));
-	Pkt.WriteByte(70);  // Falling block
+	Pkt.WriteVarInt32(a_FallingBlock.GetUniqueID());
+	Pkt.WriteBEUInt8(70);  // Falling block
 	Pkt.WriteFPInt(a_FallingBlock.GetPosX());
 	Pkt.WriteFPInt(a_FallingBlock.GetPosY());
 	Pkt.WriteFPInt(a_FallingBlock.GetPosZ());
 	Pkt.WriteByteAngle(a_FallingBlock.GetYaw());
 	Pkt.WriteByteAngle(a_FallingBlock.GetPitch());
-	Pkt.WriteInt((static_cast<int>(a_FallingBlock.GetBlockType()) | ((static_cast<int>(a_FallingBlock.GetBlockMeta()) << 16))));
-	Pkt.WriteShort(static_cast<short>(a_FallingBlock.GetSpeedX() * 400));
-	Pkt.WriteShort(static_cast<short>(a_FallingBlock.GetSpeedY() * 400));
-	Pkt.WriteShort(static_cast<short>(a_FallingBlock.GetSpeedZ() * 400));
+	Pkt.WriteBEInt32((static_cast<int>(a_FallingBlock.GetBlockType()) | ((static_cast<int>(a_FallingBlock.GetBlockMeta()) << 16))));
+	Pkt.WriteBEInt16(static_cast<short>(a_FallingBlock.GetSpeedX() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_FallingBlock.GetSpeedY() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_FallingBlock.GetSpeedZ() * 400));
 }
 
 
@@ -1139,19 +1146,19 @@ void cProtocol172::SendSpawnMob(const cMonster & a_Mob)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0f);  // Spawn Mob packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Mob.GetUniqueID()));
-	Pkt.WriteByte((Byte)a_Mob.GetMobType());
+	Pkt.WriteVarInt32(a_Mob.GetUniqueID());
+	Pkt.WriteBEUInt8((Byte)a_Mob.GetMobType());
 	Pkt.WriteFPInt(a_Mob.GetPosX());
 	Pkt.WriteFPInt(a_Mob.GetPosY());
 	Pkt.WriteFPInt(a_Mob.GetPosZ());
 	Pkt.WriteByteAngle(a_Mob.GetPitch());
 	Pkt.WriteByteAngle(a_Mob.GetHeadYaw());
 	Pkt.WriteByteAngle(a_Mob.GetYaw());
-	Pkt.WriteShort(static_cast<short>(a_Mob.GetSpeedX() * 400));
-	Pkt.WriteShort(static_cast<short>(a_Mob.GetSpeedY() * 400));
-	Pkt.WriteShort(static_cast<short>(a_Mob.GetSpeedZ() * 400));
-	Pkt.WriteEntityMetadata(a_Mob);
-	Pkt.WriteByte(0x7f);  // Metadata terminator
+	Pkt.WriteBEInt16(static_cast<short>(a_Mob.GetSpeedX() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_Mob.GetSpeedY() * 400));
+	Pkt.WriteBEInt16(static_cast<short>(a_Mob.GetSpeedZ() * 400));
+	WriteEntityMetadata(Pkt, a_Mob);
+	Pkt.WriteBEUInt8(0x7f);  // Metadata terminator
 }
 
 
@@ -1163,19 +1170,19 @@ void cProtocol172::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Entity.GetUniqueID()));
-	Pkt.WriteChar(a_ObjectType);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_ObjectType);
 	Pkt.WriteFPInt(a_Entity.GetPosX());
 	Pkt.WriteFPInt(a_Entity.GetPosY());
 	Pkt.WriteFPInt(a_Entity.GetPosZ());
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
-	Pkt.WriteInt(a_ObjectData);
+	Pkt.WriteBEInt32(a_ObjectData);
 	if (a_ObjectData != 0)
 	{
-		Pkt.WriteShort(static_cast<short>(a_Entity.GetSpeedX() * 400));
-		Pkt.WriteShort(static_cast<short>(a_Entity.GetSpeedY() * 400));
-		Pkt.WriteShort(static_cast<short>(a_Entity.GetSpeedZ() * 400));
+		Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedX() * 400));
+		Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedY() * 400));
+		Pkt.WriteBEInt16(static_cast<short>(a_Entity.GetSpeedZ() * 400));
 	}
 }
 
@@ -1188,19 +1195,19 @@ void cProtocol172::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Vehicle.GetUniqueID()));
-	Pkt.WriteChar(a_VehicleType);
+	Pkt.WriteVarInt32(a_Vehicle.GetUniqueID());
+	Pkt.WriteBEInt8(a_VehicleType);
 	Pkt.WriteFPInt(a_Vehicle.GetPosX());
 	Pkt.WriteFPInt(a_Vehicle.GetPosY());
 	Pkt.WriteFPInt(a_Vehicle.GetPosZ());
 	Pkt.WriteByteAngle(a_Vehicle.GetPitch());
 	Pkt.WriteByteAngle(a_Vehicle.GetYaw());
-	Pkt.WriteInt(a_VehicleSubType);
+	Pkt.WriteBEInt32(a_VehicleSubType);
 	if (a_VehicleSubType != 0)
 	{
-		Pkt.WriteShort(static_cast<short>(a_Vehicle.GetSpeedX() * 400));
-		Pkt.WriteShort(static_cast<short>(a_Vehicle.GetSpeedY() * 400));
-		Pkt.WriteShort(static_cast<short>(a_Vehicle.GetSpeedZ() * 400));
+		Pkt.WriteBEInt16(static_cast<Int16>(a_Vehicle.GetSpeedX() * 400));
+		Pkt.WriteBEInt16(static_cast<Int16>(a_Vehicle.GetSpeedY() * 400));
+		Pkt.WriteBEInt16(static_cast<Int16>(a_Vehicle.GetSpeedZ() * 400));
 	}
 }
 
@@ -1213,7 +1220,7 @@ void cProtocol172::SendStatistics(const cStatManager & a_Manager)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x37);
-	Pkt.WriteVarInt(statCount);  // TODO 2014-05-11 xdot: Optimization: Send "dirty" statistics only
+	Pkt.WriteVarInt32(statCount);  // TODO 2014-05-11 xdot: Optimization: Send "dirty" statistics only
 
 	for (size_t i = 0; i < (size_t)statCount; ++i)
 	{
@@ -1221,7 +1228,7 @@ void cProtocol172::SendStatistics(const cStatManager & a_Manager)
 		const AString & StatName = cStatInfo::GetName((eStatistic) i);
 
 		Pkt.WriteString(StatName);
-		Pkt.WriteVarInt(static_cast<UInt32>(Value));
+		Pkt.WriteVarInt32(static_cast<UInt32>(Value));
 	}
 }
 
@@ -1234,7 +1241,7 @@ void cProtocol172::SendTabCompletionResults(const AStringVector & a_Results)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x3a);  // Tab-Complete packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Results.size()));
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_Results.size()));
 
 	for (AStringVector::const_iterator itr = a_Results.begin(), end = a_Results.end(); itr != end; ++itr)
 	{
@@ -1251,7 +1258,7 @@ void cProtocol172::SendTeleportEntity(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x18);
-	Pkt.WriteInt(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
 	Pkt.WriteFPInt(a_Entity.GetPosX());
 	Pkt.WriteFPInt(a_Entity.GetPosY());
 	Pkt.WriteFPInt(a_Entity.GetPosZ());
@@ -1268,8 +1275,8 @@ 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
+	Pkt.WriteVarInt32(0);  // EntityID = 0, always
+	Pkt.WriteBEUInt8(1);  // Type = Thunderbolt
 	Pkt.WriteFPInt(a_BlockX);
 	Pkt.WriteFPInt(a_BlockY);
 	Pkt.WriteFPInt(a_BlockZ);
@@ -1289,8 +1296,8 @@ void cProtocol172::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay, bool a_Do
 	}
 	
 	cPacketizer Pkt(*this, 0x03);
-	Pkt.WriteInt64(a_WorldAge);
-	Pkt.WriteInt64(a_TimeOfDay);
+	Pkt.WriteBEInt64(a_WorldAge);
+	Pkt.WriteBEInt64(a_TimeOfDay);
 }
 
 
@@ -1302,12 +1309,12 @@ 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);
+	Pkt.WriteBEInt32(a_ChunkX);
+	Pkt.WriteBEInt32(a_ChunkZ);
 	Pkt.WriteBool(true);
-	Pkt.WriteShort(0);  // Primary bitmap
-	Pkt.WriteShort(0);  // Add bitmap
-	Pkt.WriteInt(0);  // Compressed data size
+	Pkt.WriteBEInt16(0);  // Primary bitmap
+	Pkt.WriteBEInt16(0);  // Add bitmap
+	Pkt.WriteBEInt32(0);  // Compressed data size
 }
 
 
@@ -1318,9 +1325,9 @@ 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(static_cast<short>(a_BlockEntity.GetPosY()));
-	Pkt.WriteInt(a_BlockEntity.GetPosZ());
+	Pkt.WriteBEInt32(a_BlockEntity.GetPosX());
+	Pkt.WriteBEInt16(static_cast<short>(a_BlockEntity.GetPosY()));
+	Pkt.WriteBEInt32(a_BlockEntity.GetPosZ());
 
 	Byte Action = 0;
 	switch (a_BlockEntity.GetBlockType())
@@ -1332,9 +1339,9 @@ void cProtocol172::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 		case E_BLOCK_FLOWER_POT:    Action = 5; break;  // Update flower pot
 		default: ASSERT(!"Unhandled or unimplemented BlockEntity update request!"); break;
 	}
-	Pkt.WriteByte(Action);
+	Pkt.WriteBEUInt8(Action);
 
-	Pkt.WriteBlockEntity(a_BlockEntity);
+	WriteBlockEntity(Pkt, a_BlockEntity);
 }
 
 
@@ -1347,9 +1354,9 @@ void cProtocol172::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, cons
 	ASSERT((a_BlockY >= 0) && (a_BlockY < cChunkDef::Height));
 	
 	cPacketizer Pkt(*this, 0x33);
-	Pkt.WriteInt(a_BlockX);
-	Pkt.WriteShort((short)a_BlockY);
-	Pkt.WriteInt(a_BlockZ);
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEInt16(static_cast<Int16>(a_BlockY));
+	Pkt.WriteBEInt32(a_BlockZ);
 	// Need to send only up to 15 chars, otherwise the client crashes (#598)
 	Pkt.WriteString(a_Line1.substr(0, 15));
 	Pkt.WriteString(a_Line2.substr(0, 15));
@@ -1364,12 +1371,13 @@ 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?
+	ASSERT((a_BlockY >= 0) && (a_BlockY < cChunkDef::Height));
 	
 	cPacketizer Pkt(*this, 0x0a);
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteInt(a_BlockX);
-	Pkt.WriteByte((Byte)a_BlockY);
-	Pkt.WriteInt(a_BlockZ);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt32(a_BlockX);
+	Pkt.WriteBEUInt8(static_cast<Byte>(a_BlockY));
+	Pkt.WriteBEInt32(a_BlockZ);
 }
 
 
@@ -1382,8 +1390,8 @@ void cProtocol172::SendWeather(eWeather a_Weather)
 	
 	{
 		cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
-		Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
-		Pkt.WriteFloat(0);  // Unused for weather
+		Pkt.WriteBEUInt8((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
+		Pkt.WriteBEFloat(0);  // Unused for weather
 	}
 
 	// TODO: Fade effect, somehow
@@ -1398,13 +1406,13 @@ 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(static_cast<short>(a_Window.GetNumSlots()));
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
+	Pkt.WriteBEInt16(static_cast<short>(a_Window.GetNumSlots()));
 	cItems Slots;
 	a_Window.GetSlots(*(m_Client->GetPlayer()), Slots);
 	for (cItems::const_iterator itr = Slots.begin(), end = Slots.end(); itr != end; ++itr)
 	{
-		Pkt.WriteItem(*itr);
+		WriteItem(Pkt, *itr);
 	}  // for itr - Slots[]
 }
 
@@ -1417,7 +1425,7 @@ void cProtocol172::SendWindowClose(const cWindow & a_Window)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x2e);
-	Pkt.WriteChar(a_Window.GetWindowID());
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
 }
 
 
@@ -1435,14 +1443,14 @@ void cProtocol172::SendWindowOpen(const cWindow & a_Window)
 	}
 	
 	cPacketizer Pkt(*this, 0x2d);
-	Pkt.WriteChar(a_Window.GetWindowID());
-	Pkt.WriteChar(static_cast<char>(a_Window.GetWindowType()));
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
+	Pkt.WriteBEInt8(static_cast<char>(a_Window.GetWindowType()));
 	Pkt.WriteString(a_Window.GetWindowTitle());
-	Pkt.WriteChar(static_cast<char>(a_Window.GetNumNonInventorySlots()));
+	Pkt.WriteBEInt8(static_cast<char>(a_Window.GetNumNonInventorySlots()));
 	Pkt.WriteBool(true);
 	if (a_Window.GetWindowType() == cWindow::wtAnimalChest)
 	{
-		Pkt.WriteInt(0);  // TODO: The animal's EntityID
+		Pkt.WriteBEInt32(0);  // TODO: The animal's EntityID
 	}
 }
 
@@ -1455,9 +1463,9 @@ void cProtocol172::SendWindowProperty(const cWindow & a_Window, short a_Property
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x31);  // Window Property packet
-	Pkt.WriteChar(a_Window.GetWindowID());
-	Pkt.WriteShort(a_Property);
-	Pkt.WriteShort(a_Value);
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
+	Pkt.WriteBEInt16(a_Property);
+	Pkt.WriteBEInt16(a_Value);
 }
 
 
@@ -1556,7 +1564,7 @@ void cProtocol172::AddReceivedData(const char * a_Data, size_t a_Size)
 				bb.ReadAll(Packet);
 				Packet.resize(Packet.size() - 1);  // Drop the final NUL pushed there for over-read detection
 				AString Out;
-				CreateHexDump(Out, Packet.data(), (int)Packet.size(), 24);
+				CreateHexDump(Out, Packet.data(), Packet.size(), 24);
 				LOGD("Packet contents:\n%s", Out.c_str());
 			#endif  // _DEBUG
 			
@@ -1702,7 +1710,7 @@ void cProtocol172::HandlePacketStatusPing(cByteBuffer & a_ByteBuffer)
 	HANDLE_READ(a_ByteBuffer, ReadBEInt64, Int64, Timestamp);
 
 	cPacketizer Pkt(*this, 0x01);  // Ping packet
-	Pkt.WriteInt64(Timestamp);
+	Pkt.WriteBEInt64(Timestamp);
 }
 
 
@@ -1756,49 +1764,52 @@ void cProtocol172::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffer)
 {
-	short EncKeyLength, EncNonceLength;
-	if (!a_ByteBuffer.ReadBEShort(EncKeyLength))
+	UInt16 EncKeyLength, EncNonceLength;
+	if (!a_ByteBuffer.ReadBEUInt16(EncKeyLength))
 	{
 		return;
 	}
-	if ((EncKeyLength < 0) || (EncKeyLength > MAX_ENC_LEN))
+	if (EncKeyLength > MAX_ENC_LEN)
 	{
-		LOGD("Invalid Encryption Key length: %d. Kicking client.", EncKeyLength);
+		LOGD("Invalid Encryption Key length: %u (0x%04x). Kicking client.", EncKeyLength, EncKeyLength);
 		m_Client->Kick("Invalid EncKeyLength");
 		return;
 	}
 	AString EncKey;
-	if (!a_ByteBuffer.ReadString(EncKey, static_cast<size_t>(EncKeyLength)))
+	if (!a_ByteBuffer.ReadString(EncKey, EncKeyLength))
 	{
 		return;
 	}
-	if (!a_ByteBuffer.ReadBEShort(EncNonceLength))
+	if (!a_ByteBuffer.ReadBEUInt16(EncNonceLength))
 	{
 		return;
 	}
-	if ((EncNonceLength < 0) || (EncNonceLength > MAX_ENC_LEN))
+	if (EncNonceLength > MAX_ENC_LEN)
 	{
-		LOGD("Invalid Encryption Nonce length: %d. Kicking client.", EncNonceLength);
+		LOGD("Invalid Encryption Nonce length: %u (0x%04x). Kicking client.", EncNonceLength, EncNonceLength);
 		m_Client->Kick("Invalid EncNonceLength");
 		return;
 	}
 	AString EncNonce;
-	if (!a_ByteBuffer.ReadString(EncNonce, static_cast<size_t>(EncNonceLength)))
+	if (!a_ByteBuffer.ReadString(EncNonce, EncNonceLength))
 	{
 		return;
 	}
 
 	// Decrypt EncNonce using privkey
 	cRsaPrivateKey & rsaDecryptor = cRoot::Get()->GetServer()->GetPrivateKey();
-	Int32 DecryptedNonce[MAX_ENC_LEN / sizeof(Int32)];
-	int res = rsaDecryptor.Decrypt((const Byte *)EncNonce.data(), EncNonce.size(), (Byte *)DecryptedNonce, sizeof(DecryptedNonce));
+	UInt32 DecryptedNonce[MAX_ENC_LEN / sizeof(UInt32)];
+	int res = rsaDecryptor.Decrypt(
+		reinterpret_cast<const Byte *>(EncNonce.data()), EncNonce.size(),
+		reinterpret_cast<Byte *>(DecryptedNonce), sizeof(DecryptedNonce)
+	);
 	if (res != 4)
 	{
 		LOGD("Bad nonce length: got %d, exp %d", res, 4);
 		m_Client->Kick("Hacked client");
 		return;
 	}
-	if (ntohl(DecryptedNonce[0]) != (unsigned)(uintptr_t)this)
+	if (ntohl(DecryptedNonce[0]) != static_cast<UInt32>(reinterpret_cast<uintptr_t>(this)))
 	{
 		LOGD("Bad nonce value");
 		m_Client->Kick("Hacked client");
@@ -1807,7 +1818,10 @@ void cProtocol172::HandlePacketLoginEncryptionResponse(cByteBuffer & a_ByteBuffe
 	
 	// Decrypt the symmetric encryption key using privkey:
 	Byte DecryptedKey[MAX_ENC_LEN];
-	res = rsaDecryptor.Decrypt((const Byte *)EncKey.data(), EncKey.size(), DecryptedKey, sizeof(DecryptedKey));
+	res = rsaDecryptor.Decrypt(
+		reinterpret_cast<const Byte *>(EncKey.data()), EncKey.size(),
+		DecryptedKey, sizeof(DecryptedKey)
+	);
 	if (res != 16)
 	{
 		LOGD("Bad key length");
@@ -1845,10 +1859,10 @@ void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 		cPacketizer Pkt(*this, 0x01);
 		Pkt.WriteString(Server->GetServerID());
 		const AString & PubKeyDer = Server->GetPublicKeyDER();
-		Pkt.WriteShort((short)PubKeyDer.size());
+		Pkt.WriteBEUInt16(static_cast<UInt16>(PubKeyDer.size()));
 		Pkt.WriteBuf(PubKeyDer.data(), PubKeyDer.size());
-		Pkt.WriteShort(4);
-		Pkt.WriteInt((int)(intptr_t)this);  // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
+		Pkt.WriteBEInt16(4);
+		Pkt.WriteBEUInt32(static_cast<UInt32>(reinterpret_cast<uintptr_t>(this)));  // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
 		m_Client->SetUsername(Username);
 		return;
 	}
@@ -1862,8 +1876,8 @@ void cProtocol172::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketAnimation(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  EntityID);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, Animation);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt32, UInt32, EntityID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Animation);
 	m_Client->HandleAnimation(Animation);
 }
 
@@ -1873,12 +1887,12 @@ void cProtocol172::HandlePacketAnimation(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar,  char, Status);
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  BlockX);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, BlockY);
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  BlockZ);
-	HANDLE_READ(a_ByteBuffer, ReadChar,  char, Face);
-	m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), Status);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Status);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockX);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, BlockY);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockZ);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt8,  Int8,  Face);
+	m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, FaceIntToBlockFace(Face), Status);
 }
 
 
@@ -1887,17 +1901,17 @@ void cProtocol172::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  BlockX);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, BlockY);
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  BlockZ);
-	HANDLE_READ(a_ByteBuffer, ReadChar,  char, Face);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockX);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, BlockY);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockZ);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt8,  Int8,  Face);
 	cItem Item;
 	ReadItem(a_ByteBuffer, Item);
 
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorX);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorY);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorZ);
-	m_Client->HandleRightClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem());
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorX);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorY);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorZ);
+	m_Client->HandleRightClick(BlockX, BlockY, BlockZ, FaceIntToBlockFace(Face), CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem());
 }
 
 
@@ -1917,11 +1931,11 @@ void cProtocol172::HandlePacketChatMessage(cByteBuffer & a_ByteBuffer)
 void cProtocol172::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Locale);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ViewDistance);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ChatFlags);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ChatColors);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    Difficulty);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ShowCape);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   ViewDistance);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   ChatFlags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   ChatColors);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   Difficulty);
+	HANDLE_READ(a_ByteBuffer, ReadBool,          bool,    ShowCape);
 	
 	m_Client->SetLocale(Locale);
 	m_Client->SetViewDistance(ViewDistance);
@@ -1934,7 +1948,7 @@ void cProtocol172::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, ActionID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, ActionID);
 	switch (ActionID)
 	{
 		case 0:
@@ -1966,13 +1980,13 @@ void cProtocol172::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16, Int16, SlotNum);
 	cItem Item;
 	if (!ReadItem(a_ByteBuffer, Item))
 	{
 		return;
 	}
-	m_Client->HandleCreativeInventory(SlotNum, Item);
+	m_Client->HandleCreativeInventory(SlotNum, Item, (SlotNum < 0) ? caLeftClick : caLeftClickOutside);
 }
 
 
@@ -1981,9 +1995,9 @@ void cProtocol172::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffe
 
 void cProtocol172::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  PlayerID);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, Action);
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  JumpBoost);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt32, UInt32, PlayerID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Action);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32,  Int32,  JumpBoost);
 
 	switch (Action)
 	{
@@ -2001,7 +2015,7 @@ void cProtocol172::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketKeepAlive(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int, KeepAliveID);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, KeepAliveID);
 	m_Client->HandleKeepAlive(KeepAliveID);
 }
 
@@ -2021,10 +2035,11 @@ void cProtocol172::HandlePacketPlayer(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketPlayerAbilities(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Flags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Flags);
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, FlyingSpeed);
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, WalkingSpeed);
 
+	// Convert flags bitfield into individual bool flags:
 	bool IsFlying = false, CanFly = false;
 	if ((Flags & 2) != 0)
 	{
@@ -2087,11 +2102,11 @@ void cProtocol172::HandlePacketPlayerPosLook(cByteBuffer & a_ByteBuffer)
 void cProtocol172::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Channel);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort,       short,   Length);
-	if (Length + 1 != (int)a_ByteBuffer.GetReadableSpace())
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt16,      UInt16,  Length);
+	if (Length != a_ByteBuffer.GetReadableSpace() - 1)
 	{
-		LOGD("Invalid plugin message packet, payload length doesn't match packet length (exp %d, got %d)",
-			static_cast<int>(a_ByteBuffer.GetReadableSpace()) - 1, Length
+		LOGD("Invalid plugin message packet, payload length doesn't match packet length (exp %u, got %u)",
+			static_cast<unsigned>(a_ByteBuffer.GetReadableSpace() - 1), Length
 		);
 		return;
 	}
@@ -2105,7 +2120,7 @@ void cProtocol172::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
 	
 	// Read the plugin message and relay to clienthandle:
 	AString Data;
-	if (!a_ByteBuffer.ReadString(Data, static_cast<size_t>(Length)))
+	if (!a_ByteBuffer.ReadString(Data, Length))
 	{
 		return;
 	}
@@ -2118,7 +2133,7 @@ void cProtocol172::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketSlotSelect(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16, Int16, SlotNum);
 	m_Client->HandleSlotSelected(SlotNum);
 }
 
@@ -2158,9 +2173,9 @@ void cProtocol172::HandlePacketTabComplete(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketUpdateSign(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt,         int,     BlockX);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort,       short,   BlockY);
-	HANDLE_READ(a_ByteBuffer, ReadBEInt,         int,     BlockZ);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32,       Int32,   BlockX);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16,       Int16,   BlockY);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt32,       Int32,   BlockZ);
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line1);
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line2);
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Line3);
@@ -2174,8 +2189,8 @@ void cProtocol172::HandlePacketUpdateSign(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEInt, int,  EntityID);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, MouseButton);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt32, UInt32,  EntityID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8, MouseButton);
 	m_Client->HandleUseEntity(EntityID, (MouseButton == 1));
 }
 
@@ -2185,8 +2200,8 @@ void cProtocol172::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, WindowID);
-	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Enchantment);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Enchantment);
 
 	m_Client->HandleEnchantItem(WindowID, Enchantment);
 }
@@ -2197,11 +2212,11 @@ void cProtocol172::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar,    char,  WindowID);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Button);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, TransactionID);
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Mode);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16,  Int16,  SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Button);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt16, UInt16, TransactionID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Mode);
 	cItem Item;
 	ReadItem(a_ByteBuffer, Item);
 
@@ -2209,8 +2224,8 @@ void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 	eClickAction Action;
 	switch ((Mode << 8) | Button)
 	{
-		case 0x0000: Action = (SlotNum != -999) ? caLeftClick  : caLeftClickOutside;  break;
-		case 0x0001: Action = (SlotNum != -999) ? caRightClick : caRightClickOutside; break;
+		case 0x0000: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caLeftClick  : caLeftClickOutside;  break;
+		case 0x0001: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caRightClick : caRightClickOutside; break;
 		case 0x0100: Action = caShiftLeftClick;  break;
 		case 0x0101: Action = caShiftRightClick; break;
 		case 0x0200: Action = caNumber1;         break;
@@ -2223,14 +2238,14 @@ void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 		case 0x0207: Action = caNumber8;         break;
 		case 0x0208: Action = caNumber9;         break;
 		case 0x0300: Action = caMiddleClick;     break;
-		case 0x0400: Action = (SlotNum == -999) ? caLeftClickOutsideHoldNothing  : caDropKey;     break;
-		case 0x0401: Action = (SlotNum == -999) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break;
-		case 0x0500: Action = (SlotNum == -999) ? caLeftPaintBegin               : caUnknown;     break;
-		case 0x0501: Action = (SlotNum != -999) ? caLeftPaintProgress            : caUnknown;     break;
-		case 0x0502: Action = (SlotNum == -999) ? caLeftPaintEnd                 : caUnknown;     break;
-		case 0x0504: Action = (SlotNum == -999) ? caRightPaintBegin              : caUnknown;     break;
-		case 0x0505: Action = (SlotNum != -999) ? caRightPaintProgress           : caUnknown;     break;
-		case 0x0506: Action = (SlotNum == -999) ? caRightPaintEnd                : caUnknown;     break;
+		case 0x0400: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftClickOutsideHoldNothing  : caDropKey;     break;
+		case 0x0401: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break;
+		case 0x0500: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftPaintBegin               : caUnknown;     break;
+		case 0x0501: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caLeftPaintProgress            : caUnknown;     break;
+		case 0x0502: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftPaintEnd                 : caUnknown;     break;
+		case 0x0504: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightPaintBegin              : caUnknown;     break;
+		case 0x0505: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caRightPaintProgress           : caUnknown;     break;
+		case 0x0506: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightPaintEnd                : caUnknown;     break;
 		case 0x0600: Action = caDblClick; break;
 		default:
 		{
@@ -2249,7 +2264,7 @@ void cProtocol172::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 
 void cProtocol172::HandlePacketWindowClose(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, WindowID);
 	m_Client->HandleWindowClose(WindowID);
 }
 
@@ -2257,20 +2272,20 @@ void cProtocol172::HandlePacketWindowClose(cByteBuffer & a_ByteBuffer)
 
 
 
-void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const AString & a_Channel, short a_PayloadLength)
+void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const AString & a_Channel, UInt16 a_PayloadLength)
 {
 	if (a_Channel == "MC|AdvCdm")
 	{
 		size_t BeginningSpace = a_ByteBuffer.GetReadableSpace();
-		HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Mode);
+		HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Mode);
 		switch (Mode)
 		{
 			case 0x00:
 			{
 				// Block-based commandblock update:
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX);
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockY);
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockX);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockY);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockZ);
 				HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Command);
 				m_Client->HandleCommandBlockBlockChange(BlockX, BlockY, BlockZ, Command);
 				break;
@@ -2288,12 +2303,12 @@ void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 
 		// Read the remainder of the packet (Vanilla sometimes sends bogus data at the end of the packet; #1692):
 		size_t BytesRead = BeginningSpace - a_ByteBuffer.GetReadableSpace();
-		if (BytesRead < static_cast<size_t>(a_PayloadLength))
+		if (BytesRead < a_PayloadLength)
 		{
 			LOGD("Protocol 1.7: Skipping garbage data at the end of a vanilla MC|AdvCdm packet, %u bytes",
 				static_cast<unsigned>(a_PayloadLength - BytesRead)
 			);
-			a_ByteBuffer.SkipRead(static_cast<size_t>(a_PayloadLength) - BytesRead);
+			a_ByteBuffer.SkipRead(a_PayloadLength - BytesRead);
 		}
 		return;
 	}
@@ -2301,7 +2316,7 @@ void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	{
 		// Read the client's brand:
 		AString Brand;
-		if (a_ByteBuffer.ReadString(Brand, static_cast<size_t>(a_PayloadLength)))
+		if (a_ByteBuffer.ReadString(Brand, a_PayloadLength))
 		{
 			m_Client->SetClientBrand(Brand);
 		}
@@ -2312,15 +2327,15 @@ void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	}
 	else if (a_Channel == "MC|Beacon")
 	{
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, Effect1);
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, Effect2);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, Effect1);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, Effect2);
 		m_Client->HandleBeaconSelection(Effect1, Effect2);
 		return;
 	}
 	else if (a_Channel == "MC|ItemName")
 	{
 		AString ItemName;
-		if (a_ByteBuffer.ReadString(ItemName, static_cast<size_t>(a_PayloadLength)))
+		if (a_ByteBuffer.ReadString(ItemName, a_PayloadLength))
 		{
 			m_Client->HandleAnvilItemName(ItemName);
 		}
@@ -2328,7 +2343,7 @@ void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	}
 	else if (a_Channel == "MC|TrSel")
 	{
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, SlotNum);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, SlotNum);
 		m_Client->HandleNPCTrade(SlotNum);
 		return;
 	}
@@ -2336,7 +2351,7 @@ void cProtocol172::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	
 	// Read the payload and send it through to the clienthandle:
 	AString Message;
-	VERIFY(a_ByteBuffer.ReadString(Message, static_cast<size_t>(a_PayloadLength)));
+	VERIFY(a_ByteBuffer.ReadString(Message, a_PayloadLength));
 	m_Client->HandlePluginMessage(a_Channel, Message);
 }
 
@@ -2368,9 +2383,42 @@ void cProtocol172::SendData(const char * a_Data, size_t a_Size)
 
 
 
+void cProtocol172::SendPacket(cPacketizer & a_Packet)
+{
+	AString DataToSend;
+
+	// Send the packet length
+	UInt32 PacketLen = static_cast<UInt32>(m_OutPacketBuffer.GetUsedSpace());
+
+	m_OutPacketLenBuffer.WriteVarInt32(PacketLen);
+	m_OutPacketLenBuffer.ReadAll(DataToSend);
+	SendData(DataToSend.data(), DataToSend.size());
+	m_OutPacketLenBuffer.CommitRead();
+	
+	// Send the packet data:
+	m_OutPacketBuffer.ReadAll(DataToSend);
+	SendData(DataToSend.data(), DataToSend.size());
+	m_OutPacketBuffer.CommitRead();
+	
+	// Log the comm into logfile:
+	if (g_ShouldLogCommOut)
+	{
+		AString Hex;
+		ASSERT(DataToSend.size() > 0);
+		CreateHexDump(Hex, DataToSend.data(), DataToSend.size(), 16);
+		m_CommLogFile.Printf("Outgoing packet: type %d (0x%x), length %u (0x%x), state %d. Payload (incl. type):\n%s\n",
+			a_Packet.GetPacketType(), a_Packet.GetPacketType(), PacketLen, PacketLen, m_State, Hex.c_str()
+		);
+	}
+}
+
+
+
+
+
 bool cProtocol172::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item)
 {
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemType);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt16, Int16, ItemType);
 	if (ItemType == -1)
 	{
 		// The item is empty, no more data follows
@@ -2379,8 +2427,8 @@ bool cProtocol172::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item)
 	}
 	a_Item.m_ItemType = ItemType;
 	
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadChar,    char,  ItemCount);
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemDamage);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt8,  Int8,  ItemCount);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt16, Int16, ItemDamage);
 	a_Item.m_ItemCount  = ItemCount;
 	a_Item.m_ItemDamage = ItemDamage;
 	if (ItemCount <= 0)
@@ -2388,15 +2436,10 @@ bool cProtocol172::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item)
 		a_Item.Empty();
 	}
 
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, MetadataLength);
-	if (MetadataLength <= 0)
-	{
-		return true;
-	}
-	
 	// Read the metadata
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEUInt16, UInt16, MetadataLength);
 	AString Metadata;
-	if (!a_ByteBuffer.ReadString(Metadata, static_cast<size_t>(MetadataLength)))
+	if (!a_ByteBuffer.ReadString(Metadata, MetadataLength))
 	{
 		return false;
 	}
@@ -2512,35 +2555,19 @@ void cProtocol172::StartEncryption(const Byte * a_Key)
 
 
 
-////////////////////////////////////////////////////////////////////////////////
-// cProtocol172::cPacketizer:
-
-cProtocol172::cPacketizer::~cPacketizer()
+eBlockFace cProtocol172::FaceIntToBlockFace(Int8 a_BlockFace)
 {
-	AString DataToSend;
-
-	// Send the packet length
-	UInt32 PacketLen = (UInt32)m_Out.GetUsedSpace();
-
-	m_Protocol.m_OutPacketLenBuffer.WriteVarInt(PacketLen);
-	m_Protocol.m_OutPacketLenBuffer.ReadAll(DataToSend);
-	m_Protocol.SendData(DataToSend.data(), DataToSend.size());
-	m_Protocol.m_OutPacketLenBuffer.CommitRead();
-	
-	// Send the packet data:
-	m_Out.ReadAll(DataToSend);
-	m_Protocol.SendData(DataToSend.data(), DataToSend.size());
-	m_Out.CommitRead();
-	
-	// Log the comm into logfile:
-	if (g_ShouldLogCommOut)
+	// Normalize the blockface values returned from the protocol
+	// Anything known gets mapped 1:1, everything else returns BLOCK_FACE_NONE
+	switch (a_BlockFace)
 	{
-		AString Hex;
-		ASSERT(DataToSend.size() > 0);
-		CreateHexDump(Hex, DataToSend.data() + 1, DataToSend.size() - 1, 16);
-		m_Protocol.m_CommLogFile.Printf("Outgoing packet: type %d (0x%x), length %u (0x%x), state %d. Payload:\n%s\n",
-			DataToSend[0], DataToSend[0], PacketLen, PacketLen, m_Protocol.m_State, Hex.c_str()
-		);
+		case BLOCK_FACE_XM: return BLOCK_FACE_XM;
+		case BLOCK_FACE_XP: return BLOCK_FACE_XP;
+		case BLOCK_FACE_YM: return BLOCK_FACE_YM;
+		case BLOCK_FACE_YP: return BLOCK_FACE_YP;
+		case BLOCK_FACE_ZM: return BLOCK_FACE_ZM;
+		case BLOCK_FACE_ZP: return BLOCK_FACE_ZP;
+		default: return BLOCK_FACE_NONE;
 	}
 }
 
@@ -2548,7 +2575,7 @@ cProtocol172::cPacketizer::~cPacketizer()
 
 
 
-void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
+void cProtocol172::WriteItem(cPacketizer & a_Pkt, const cItem & a_Item)
 {
 	short ItemType = a_Item.m_ItemType;
 	ASSERT(ItemType >= -1);  // Check validity of packets in debug runtime
@@ -2560,17 +2587,17 @@ void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
 	
 	if (a_Item.IsEmpty())
 	{
-		WriteShort(-1);
+		a_Pkt.WriteBEInt16(-1);
 		return;
 	}
 	
-	WriteShort(ItemType);
-	WriteChar (a_Item.m_ItemCount);
-	WriteShort(a_Item.m_ItemDamage);
+	a_Pkt.WriteBEInt16(ItemType);
+	a_Pkt.WriteBEInt8(a_Item.m_ItemCount);
+	a_Pkt.WriteBEInt16(a_Item.m_ItemDamage);
 	
 	if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty() && (a_Item.m_ItemType != E_ITEM_FIREWORK_ROCKET) && (a_Item.m_ItemType != E_ITEM_FIREWORK_STAR))
 	{
-		WriteShort(-1);
+		a_Pkt.WriteBEInt16(-1);
 		return;
 	}
 
@@ -2619,15 +2646,15 @@ void cProtocol172::cPacketizer::WriteItem(const cItem & a_Item)
 
 	AString Compressed;
 	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
-	WriteShort((short)Compressed.size());
-	WriteBuf(Compressed.data(), Compressed.size());
+	a_Pkt.WriteBEUInt16(static_cast<UInt16>(Compressed.size()));
+	a_Pkt.WriteBuf(Compressed.data(), Compressed.size());
 }
 
 
 
 
 
-void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEntity)
+void cProtocol172::WriteBlockEntity(cPacketizer & a_Pkt, const cBlockEntity & a_BlockEntity)
 {
 	cFastNBTWriter Writer;
 
@@ -2635,46 +2662,41 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 	{
 		case E_BLOCK_BEACON:
 		{
-			cBeaconEntity & BeaconEntity = (cBeaconEntity &)a_BlockEntity;
-
-			Writer.AddInt("x", BeaconEntity.GetPosX());
-			Writer.AddInt("y", BeaconEntity.GetPosY());
-			Writer.AddInt("z", BeaconEntity.GetPosZ());
-			Writer.AddInt("Primary", BeaconEntity.GetPrimaryEffect());
+			auto & BeaconEntity = reinterpret_cast<const cBeaconEntity &>(a_BlockEntity);
+			Writer.AddInt("x",         BeaconEntity.GetPosX());
+			Writer.AddInt("y",         BeaconEntity.GetPosY());
+			Writer.AddInt("z",         BeaconEntity.GetPosZ());
+			Writer.AddInt("Primary",   BeaconEntity.GetPrimaryEffect());
 			Writer.AddInt("Secondary", BeaconEntity.GetSecondaryEffect());
-			Writer.AddInt("Levels", BeaconEntity.GetBeaconLevel());
+			Writer.AddInt("Levels",    BeaconEntity.GetBeaconLevel());
 			Writer.AddString("id", "Beacon");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_COMMAND_BLOCK:
 		{
-			cCommandBlockEntity & CommandBlockEntity = (cCommandBlockEntity &)a_BlockEntity;
-
+			auto & CommandBlockEntity = reinterpret_cast<const cCommandBlockEntity &>(a_BlockEntity);
 			Writer.AddByte("TrackOutput", 1);  // Neither I nor the MC wiki has any idea about this
 			Writer.AddInt("SuccessCount", CommandBlockEntity.GetResult());
-			Writer.AddInt("x", CommandBlockEntity.GetPosX());
-			Writer.AddInt("y", CommandBlockEntity.GetPosY());
-			Writer.AddInt("z", CommandBlockEntity.GetPosZ());
-			Writer.AddString("Command", CommandBlockEntity.GetCommand().c_str());
+			Writer.AddInt("x",            CommandBlockEntity.GetPosX());
+			Writer.AddInt("y",            CommandBlockEntity.GetPosY());
+			Writer.AddInt("z",            CommandBlockEntity.GetPosZ());
+			Writer.AddString("Command",   CommandBlockEntity.GetCommand().c_str());
 			// You can set custom names for windows in Vanilla
 			// For a command block, this would be the 'name' prepended to anything it outputs into global chat
-			// MCS doesn't have this, so just leave it @ '@'. (geddit?)
+			// MCS doesn't have this, so just leave it at '@'.
 			Writer.AddString("CustomName", "@");
-			Writer.AddString("id", "Control");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
-
+			Writer.AddString("id",         "Control");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			if (!CommandBlockEntity.GetLastOutput().empty())
 			{
-				AString Output;
-				Printf(Output, "{\"text\":\"%s\"}", CommandBlockEntity.GetLastOutput().c_str());
-
-				Writer.AddString("LastOutput", Output.c_str());
+				Writer.AddString("LastOutput", Printf("{\"text\":\"%s\"}", CommandBlockEntity.GetLastOutput().c_str()));
 			}
 			break;
 		}
+
 		case E_BLOCK_HEAD:
 		{
-			cMobHeadEntity & MobHeadEntity = (cMobHeadEntity &)a_BlockEntity;
-
+			auto & MobHeadEntity = reinterpret_cast<const cMobHeadEntity &>(a_BlockEntity);
 			Writer.AddInt("x", MobHeadEntity.GetPosX());
 			Writer.AddInt("y", MobHeadEntity.GetPosY());
 			Writer.AddInt("z", MobHeadEntity.GetPosZ());
@@ -2684,10 +2706,10 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "Skull");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_FLOWER_POT:
 		{
-			cFlowerPotEntity & FlowerPotEntity = (cFlowerPotEntity &)a_BlockEntity;
-
+			auto & FlowerPotEntity = reinterpret_cast<const cFlowerPotEntity &>(a_BlockEntity);
 			Writer.AddInt("x", FlowerPotEntity.GetPosX());
 			Writer.AddInt("y", FlowerPotEntity.GetPosY());
 			Writer.AddInt("z", FlowerPotEntity.GetPosZ());
@@ -2696,10 +2718,10 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "FlowerPot");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_MOB_SPAWNER:
 		{
-			cMobSpawnerEntity & MobSpawnerEntity = (cMobSpawnerEntity &)a_BlockEntity;
-
+			auto & MobSpawnerEntity = reinterpret_cast<const cMobSpawnerEntity &>(a_BlockEntity);
 			Writer.AddInt("x", MobSpawnerEntity.GetPosX());
 			Writer.AddInt("y", MobSpawnerEntity.GetPosY());
 			Writer.AddInt("z", MobSpawnerEntity.GetPosZ());
@@ -2708,41 +2730,26 @@ void cProtocol172::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "MobSpawner");
 			break;
 		}
-		default: break;
+
+		default:
+		{
+			break;
+		}
 	}
 
 	Writer.Finish();
 
 	AString Compressed;
 	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
-	WriteShort((short)Compressed.size());
-	WriteBuf(Compressed.data(), Compressed.size());
+	a_Pkt.WriteBEUInt16(static_cast<UInt16>(Compressed.size()));
+	a_Pkt.WriteBuf(Compressed.data(), Compressed.size());
 }
 
 
 
 
 
-void cProtocol172::cPacketizer::WriteByteAngle(double a_Angle)
-{
-	WriteChar(static_cast<char>(255 * a_Angle / 360));
-}
-
-
-
-
-
-void cProtocol172::cPacketizer::WriteFPInt(double a_Value)
-{
-	int Value = (int)(a_Value * 32);
-	WriteInt(Value);
-}
-
-
-
-
-
-void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
+void cProtocol172::WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity)
 {
 	// Common metadata:
 	Byte Flags = 0;
@@ -2766,21 +2773,21 @@ void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 	{
 		Flags |= 0x20;
 	}
-	WriteByte(0);  // Byte(0) + index 0
-	WriteByte(Flags);
+	a_Pkt.WriteBEUInt8(0);  // Byte(0) + index 0
+	a_Pkt.WriteBEUInt8(Flags);
 	
 	switch (a_Entity.GetEntityType())
 	{
 		case cEntity::etPlayer: break;  // TODO?
 		case cEntity::etPickup:
 		{
-			WriteByte((5 << 5) | 10);  // Slot(5) + index 10
-			WriteItem(((const cPickup &)a_Entity).GetItem());
+			a_Pkt.WriteBEUInt8((5 << 5) | 10);  // Slot(5) + index 10
+			WriteItem(a_Pkt, reinterpret_cast<const cPickup &>(a_Entity).GetItem());
 			break;
 		}
 		case cEntity::etMinecart:
 		{
-			WriteByte(0x51);
+			a_Pkt.WriteBEUInt8(0x51);
 
 			// The following expression makes Minecarts shake more with less health or higher damage taken
 			// It gets half the maximum health, and takes it away from the current health minus the half health:
@@ -2789,263 +2796,274 @@ void cProtocol172::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 			Health: 3 | 3 - (3 - 3) = 3
 			Health: 1 | 3 - (1 - 3) = 5
 			*/
-			WriteInt((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * ((const cMinecart &)a_Entity).LastDamage()) * 4);
-			WriteByte(0x52);
-			WriteInt(1);  // Shaking direction, doesn't seem to affect anything
-			WriteByte(0x73);
-			WriteFloat((float)(((const cMinecart &)a_Entity).LastDamage() + 10));  // Damage taken / shake effect multiplyer
+			auto & Minecart = reinterpret_cast<const cMinecart &>(a_Entity);
+			a_Pkt.WriteBEInt32((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * Minecart.LastDamage()) * 4);
+			a_Pkt.WriteBEUInt8(0x52);
+			a_Pkt.WriteBEInt32(1);  // Shaking direction, doesn't seem to affect anything
+			a_Pkt.WriteBEUInt8(0x73);
+			a_Pkt.WriteBEFloat(static_cast<float>(Minecart.LastDamage() + 10));  // Damage taken / shake effect multiplyer
 			
-			if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpNone)
+			if (Minecart.GetPayload() == cMinecart::mpNone)
 			{
-				cRideableMinecart & RideableMinecart = ((cRideableMinecart &)a_Entity);
+				auto & RideableMinecart = reinterpret_cast<const cRideableMinecart &>(Minecart);
 				const cItem & MinecartContent = RideableMinecart.GetContent();
 				if (!MinecartContent.IsEmpty())
 				{
-					WriteByte(0x54);
+					a_Pkt.WriteBEUInt8(0x54);
 					int Content = MinecartContent.m_ItemType;
 					Content |= MinecartContent.m_ItemDamage << 8;
-					WriteInt(Content);
-					WriteByte(0x55);
-					WriteInt(RideableMinecart.GetBlockHeight());
-					WriteByte(0x56);
-					WriteByte(1);
+					a_Pkt.WriteBEInt32(Content);
+					a_Pkt.WriteBEUInt8(0x55);
+					a_Pkt.WriteBEInt32(RideableMinecart.GetBlockHeight());
+					a_Pkt.WriteBEUInt8(0x56);
+					a_Pkt.WriteBEUInt8(1);
 				}
 			}
-			else if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpFurnace)
+			else if (Minecart.GetPayload() == cMinecart::mpFurnace)
 			{
-				WriteByte(0x10);
-				WriteByte(((const cMinecartWithFurnace &)a_Entity).IsFueled() ? 1 : 0);
+				a_Pkt.WriteBEUInt8(0x10);
+				a_Pkt.WriteBEUInt8(reinterpret_cast<const cMinecartWithFurnace &>(Minecart).IsFueled() ? 1 : 0);
 			}
 			break;
-		}
+		}  // case etMinecart
+
 		case cEntity::etProjectile:
 		{
-			cProjectileEntity & Projectile = (cProjectileEntity &)a_Entity;
+			auto & Projectile = reinterpret_cast<const cProjectileEntity &>(a_Entity);
 			switch (Projectile.GetProjectileKind())
 			{
 				case cProjectileEntity::pkArrow:
 				{
-					WriteByte(0x10);
-					WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0);
+					a_Pkt.WriteBEUInt8(0x10);
+					a_Pkt.WriteBEUInt8(reinterpret_cast<const cArrowEntity &>(a_Entity).IsCritical() ? 1 : 0);
 					break;
 				}
 				case cProjectileEntity::pkFirework:
 				{
-					WriteByte(0xA8);
-					WriteItem(((const cFireworkEntity &)a_Entity).GetItem());
+					a_Pkt.WriteBEUInt8(0xa8);
+					WriteItem(a_Pkt, reinterpret_cast<const cFireworkEntity &>(a_Entity).GetItem());
 					break;
 				}
 				default: break;
 			}
 			break;
-		}
+		}  // case etProjectile
+
 		case cEntity::etMonster:
 		{
-			WriteMobMetadata((const cMonster &)a_Entity);
+			WriteMobMetadata(a_Pkt, reinterpret_cast<const cMonster &>(a_Entity));
 			break;
-		}
+		}  // case etMonster
+
 		case cEntity::etItemFrame:
 		{
-			cItemFrame & Frame = (cItemFrame &)a_Entity;
-			WriteByte(0xA2);
-			WriteItem(Frame.GetItem());
-			WriteByte(0x3);
-			WriteByte(Frame.GetItemRotation() / 2);
+			auto & Frame = reinterpret_cast<const cItemFrame &>(a_Entity);
+			a_Pkt.WriteBEUInt8(0xa2);
+			WriteItem(a_Pkt, Frame.GetItem());
+			a_Pkt.WriteBEUInt8(0x03);
+			a_Pkt.WriteBEUInt8(Frame.GetItemRotation() / 2);
+			break;
+		}  // case etItemFrame
+
+		default:
+		{
 			break;
 		}
-		default: break;
-	}
+	}  // switch (EntityType)
 }
 
 
 
 
 
-void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
+void cProtocol172::WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob)
 {
 	switch (a_Mob.GetMobType())
 	{
-		case mtCreeper:
-		{
-			WriteByte(0x10);
-			WriteByte(((const cCreeper &)a_Mob).IsBlowing() ? 1 : 0);
-			WriteByte(0x11);
-			WriteByte(((const cCreeper &)a_Mob).IsCharged() ? 1 : 0);
-			break;
-		}
-		
 		case mtBat:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cBat &)a_Mob).IsHanging() ? 1 : 0);
-			break;
-		}
-		
-		case mtPig:
-		{
-			WriteByte(0x10);
-			WriteByte(((const cPig &)a_Mob).IsSaddled() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cBat &>(a_Mob).IsHanging() ? 1 : 0);
 			break;
-		}
+		}  // case mtBat
 		
-		case mtVillager:
+		case mtCreeper:
 		{
-			WriteByte(0x50);
-			WriteInt(((const cVillager &)a_Mob).GetVilType());
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cCreeper &>(a_Mob).IsBlowing() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x11);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cCreeper &>(a_Mob).IsCharged() ? 1 : 0);
 			break;
-		}
+		}  // case mtCreeper
 		
-		case mtZombie:
+		case mtEnderman:
 		{
-			WriteByte(0x0c);
-			WriteByte(((const cZombie &)a_Mob).IsBaby() ? 1 : 0);
-			WriteByte(0x0d);
-			WriteByte(((const cZombie &)a_Mob).IsVillagerZombie() ? 1 : 0);
-			WriteByte(0x0e);
-			WriteByte(((const cZombie &)a_Mob).IsConverting() ? 1 : 0);
+			auto & Enderman = reinterpret_cast<const cEnderman &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8((Byte)(Enderman.GetCarriedBlock()));
+			a_Pkt.WriteBEUInt8(0x11);
+			a_Pkt.WriteBEUInt8((Byte)(Enderman.GetCarriedMeta()));
+			a_Pkt.WriteBEUInt8(0x12);
+			a_Pkt.WriteBEUInt8(Enderman.IsScreaming() ? 1 : 0);
 			break;
-		}
+		}  // case mtEnderman
 		
 		case mtGhast:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cGhast &)a_Mob).IsCharging());
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cGhast &>(a_Mob).IsCharging());
 			break;
-		}
+		}  // case mtGhast
 		
-		case mtWolf:
+		case mtHorse:
 		{
-			const cWolf & Wolf = (const cWolf &)a_Mob;
-			Byte WolfStatus = 0;
-			if (Wolf.IsSitting())
+			auto & Horse = reinterpret_cast<const cHorse &>(a_Mob);
+			int Flags = 0;
+			if (Horse.IsTame())
 			{
-				WolfStatus |= 0x1;
+				Flags |= 0x02;
 			}
-			if (Wolf.IsAngry())
+			if (Horse.IsSaddled())
 			{
-				WolfStatus |= 0x2;
+				Flags |= 0x04;
 			}
-			if (Wolf.IsTame())
+			if (Horse.IsChested())
 			{
-				WolfStatus |= 0x4;
+				Flags |= 0x08;
 			}
-			WriteByte(0x10);
-			WriteByte(WolfStatus);
-
-			WriteByte(0x72);
-			WriteFloat((float)(a_Mob.GetHealth()));
-			WriteByte(0x13);
-			WriteByte(Wolf.IsBegging() ? 1 : 0);
-			WriteByte(0x14);
-			WriteByte(static_cast<Byte>(Wolf.GetCollarColor()));
+			if (Horse.IsBaby())
+			{
+				Flags |= 0x10;
+			}
+			if (Horse.IsEating())
+			{
+				Flags |= 0x20;
+			}
+			if (Horse.IsRearing())
+			{
+				Flags |= 0x40;
+			}
+			if (Horse.IsMthOpen())
+			{
+				Flags |= 0x80;
+			}
+			a_Pkt.WriteBEUInt8(0x50);  // Int at index 16
+			a_Pkt.WriteBEInt32(Flags);
+			a_Pkt.WriteBEUInt8(0x13);  // Byte at index 19
+			a_Pkt.WriteBEUInt8(static_cast<Byte>(Horse.GetHorseType()));
+			a_Pkt.WriteBEUInt8(0x54);  // Int at index 20
+			int Appearance = 0;
+			Appearance = Horse.GetHorseColor();
+			Appearance |= Horse.GetHorseStyle() << 8;
+			a_Pkt.WriteBEInt32(Appearance);
+			a_Pkt.WriteBEUInt8(0x56);  // Int at index 22
+			a_Pkt.WriteBEInt32(Horse.GetHorseArmour());
 			break;
-		}
+		}  // case mtHorse
+
+		case mtMagmaCube:
+		{
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(static_cast<Byte>(reinterpret_cast<const cMagmaCube &>(a_Mob).GetSize()));
+			break;
+		}  // case mtMagmaCube
+		
+		case mtPig:
+		{
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cPig &>(a_Mob).IsSaddled() ? 1 : 0);
+			break;
+		}  // case mtPig
 		
 		case mtSheep:
 		{
-			WriteByte(0x10);
-			Byte SheepMetadata = static_cast<Byte>(((const cSheep &)a_Mob).GetFurColor() & 0x0f);
-			if (((const cSheep &)a_Mob).IsSheared())
+			a_Pkt.WriteBEUInt8(0x10);
+			auto & Sheep = reinterpret_cast<const cSheep &>(a_Mob);
+			Byte SheepMetadata = static_cast<Byte>(Sheep.GetFurColor() & 0x0f);
+			if (Sheep.IsSheared())
 			{
 				SheepMetadata |= 0x10;
 			}
-			WriteByte(SheepMetadata);
+			a_Pkt.WriteBEUInt8(SheepMetadata);
 			break;
-		}
-		
-		case mtEnderman:
-		{
-			WriteByte(0x10);
-			WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedBlock()));
-			WriteByte(0x11);
-			WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedMeta()));
-			WriteByte(0x12);
-			WriteByte(((const cEnderman &)a_Mob).IsScreaming() ? 1 : 0);
-			break;
-		}
+		}  // case mtSheep
 		
 		case mtSkeleton:
 		{
-			WriteByte(0x0d);
-			WriteByte(((const cSkeleton &)a_Mob).IsWither() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x0d);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cSkeleton &>(a_Mob).IsWither() ? 1 : 0);
 			break;
-		}
+		}  // case mtSkeleton
 		
-		case mtWitch:
+		case mtSlime:
 		{
-			WriteByte(0x15);
-			WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(static_cast<Byte>(reinterpret_cast<const cSlime &>(a_Mob).GetSize()));
 			break;
-		}
-
-		case mtWither:
+		}  // case mtSlime
+		
+		case mtVillager:
 		{
-			WriteByte(0x54);  // Int at index 20
-			WriteInt(static_cast<int>(((const cWither &)a_Mob).GetWitherInvulnerableTicks()));
-			WriteByte(0x66);  // Float at index 6
-			WriteFloat((float)(a_Mob.GetHealth()));
+			a_Pkt.WriteBEUInt8(0x50);
+			a_Pkt.WriteBEInt32(reinterpret_cast<const cVillager &>(a_Mob).GetVilType());
 			break;
-		}
+		}  // case mtVillager
 		
-		case mtSlime:
+		case mtWitch:
 		{
-			WriteByte(0x10);
-			WriteByte(static_cast<Byte>(((const cSlime &)a_Mob).GetSize()));
+			a_Pkt.WriteBEUInt8(0x15);
+			a_Pkt.WriteBEUInt8(reinterpret_cast<const cWitch &>(a_Mob).IsAngry() ? 1 : 0);
 			break;
-		}
-		
-		case mtMagmaCube:
+		}  // case mtWitch
+
+		case mtWither:
 		{
-			WriteByte(0x10);
-			WriteByte(static_cast<Byte>(((const cMagmaCube &)a_Mob).GetSize()));
+			a_Pkt.WriteBEUInt8(0x54);  // Int at index 20
+			a_Pkt.WriteBEInt32(static_cast<int>(reinterpret_cast<const cWither &>(a_Mob).GetWitherInvulnerableTicks()));
+			a_Pkt.WriteBEUInt8(0x66);  // Float at index 6
+			a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));
 			break;
-		}
+		}  // case mtWither
 		
-		case mtHorse:
+		case mtWolf:
 		{
-			const cHorse & Horse = (const cHorse &)a_Mob;
-			int Flags = 0;
-			if (Horse.IsTame())
-			{
-				Flags |= 0x02;
-			}
-			if (Horse.IsSaddled())
-			{
-				Flags |= 0x04;
-			}
-			if (Horse.IsChested())
-			{
-				Flags |= 0x08;
-			}
-			if (Horse.IsBaby())
-			{
-				Flags |= 0x10;
-			}
-			if (Horse.IsEating())
+			auto & Wolf = reinterpret_cast<const cWolf &>(a_Mob);
+			Byte WolfStatus = 0;
+			if (Wolf.IsSitting())
 			{
-				Flags |= 0x20;
+				WolfStatus |= 0x1;
 			}
-			if (Horse.IsRearing())
+			if (Wolf.IsAngry())
 			{
-				Flags |= 0x40;
+				WolfStatus |= 0x2;
 			}
-			if (Horse.IsMthOpen())
+			if (Wolf.IsTame())
 			{
-				Flags |= 0x80;
+				WolfStatus |= 0x4;
 			}
-			WriteByte(0x50);  // Int at index 16
-			WriteInt(Flags);
-			WriteByte(0x13);  // Byte at index 19
-			WriteByte(static_cast<Byte>(Horse.GetHorseType()));
-			WriteByte(0x54);  // Int at index 20
-			int Appearance = 0;
-			Appearance = Horse.GetHorseColor();
-			Appearance |= Horse.GetHorseStyle() << 8;
-			WriteInt(Appearance);
-			WriteByte(0x56);  // Int at index 22
-			WriteInt(Horse.GetHorseArmour());
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(WolfStatus);
+
+			a_Pkt.WriteBEUInt8(0x72);
+			a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));
+			a_Pkt.WriteBEUInt8(0x13);
+			a_Pkt.WriteBEUInt8(Wolf.IsBegging() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x14);
+			a_Pkt.WriteBEUInt8(static_cast<Byte>(Wolf.GetCollarColor()));
 			break;
-		}
+		}  // case mtWolf
+		
+		case mtZombie:
+		{
+			auto & Zombie = reinterpret_cast<const cZombie &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x0c);
+			a_Pkt.WriteBEUInt8(Zombie.IsBaby() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x0d);
+			a_Pkt.WriteBEUInt8(Zombie.IsVillagerZombie() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x0e);
+			a_Pkt.WriteBEUInt8(Zombie.IsConverting() ? 1 : 0);
+			break;
+		}  // case mtZombie
 
 		default:
 		{
@@ -3057,10 +3075,10 @@ void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 	// Custom name:
 	if (a_Mob.HasCustomName())
 	{
-		WriteByte(0x8a);
-		WriteString(a_Mob.GetCustomName());
-		WriteByte(0x0b);
-		WriteByte(a_Mob.IsCustomNameAlwaysVisible() ? 1 : 0);
+		a_Pkt.WriteBEUInt8(0x8a);
+		a_Pkt.WriteString(a_Mob.GetCustomName());
+		a_Pkt.WriteBEUInt8(0x0b);
+		a_Pkt.WriteBEUInt8(a_Mob.IsCustomNameAlwaysVisible() ? 1 : 0);
 	}
 }
 
@@ -3068,20 +3086,20 @@ void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 
 
 
-void cProtocol172::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
+void cProtocol172::WriteEntityProperties(cPacketizer & a_Pkt, const cEntity & a_Entity)
 {
 	if (!a_Entity.IsMob())
 	{
 		// No properties for anything else than mobs
-		WriteInt(0);
+		a_Pkt.WriteBEInt32(0);
 		return;
 	}
 
-	// const cMonster & Mob = (const cMonster &)a_Entity;
+	// auto & Mob = reinterpret_cast<const cMonster &>(a_Entity);
 
 	// TODO: Send properties and modifiers based on the mob type
 	
-	WriteInt(0);  // NumProperties
+	a_Pkt.WriteBEInt32(0);  // NumProperties
 }
 
 
@@ -3104,7 +3122,7 @@ void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
 {
 	// Called to spawn another player for the client
 	cPacketizer Pkt(*this, 0x0c);  // Spawn Player packet
-	Pkt.WriteVarInt(static_cast<UInt32>(a_Player.GetUniqueID()));
+	Pkt.WriteVarInt32(a_Player.GetUniqueID());
 	Pkt.WriteString(cMojangAPI::MakeUUIDDashed(a_Player.GetClientHandle()->GetUUID()));
 	if (a_Player.HasCustomName())
 	{
@@ -3116,7 +3134,7 @@ void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
 	}
 
 	const Json::Value & Properties = a_Player.GetClientHandle()->GetProperties();
-	Pkt.WriteVarInt(Properties.size());
+	Pkt.WriteVarInt32(Properties.size());
 
 	for (Json::Value::iterator itr = Properties.begin(), end = Properties.end(); itr != end; ++itr)
 	{
@@ -3131,10 +3149,10 @@ void cProtocol176::SendPlayerSpawn(const cPlayer & a_Player)
 	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
+	Pkt.WriteBEInt16(ItemType);
+	Pkt.WriteBEUInt8((3 << 5) | 6);  // Metadata: float + index 6
+	Pkt.WriteBEFloat(static_cast<float>(a_Player.GetHealth()));
+	Pkt.WriteBEUInt8(0x7f);  // Metadata: end
 }
 
 
diff --git a/src/Protocol/Protocol17x.h b/src/Protocol/Protocol17x.h
index f939bfb5e..1212cc325 100644
--- a/src/Protocol/Protocol17x.h
+++ b/src/Protocol/Protocol17x.h
@@ -63,7 +63,7 @@ public:
 	/** Sending stuff to clients (alphabetically sorted): */
 	virtual void SendAttachEntity               (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
 	virtual void SendBlockAction                (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
-	virtual void SendBlockBreakAnim	            (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockBreakAnim	            (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
 	virtual void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
 	virtual void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
 	virtual void SendChat                       (const AString & a_Message) override;
@@ -140,89 +140,6 @@ public:
 
 protected:
 
-	/** Composes individual packets in the protocol's m_OutPacketBuffer; sends them upon being destructed */
-	class cPacketizer
-	{
-	public:
-		cPacketizer(cProtocol172 & a_Protocol, UInt32 a_PacketType) :
-			m_Protocol(a_Protocol),
-			m_Out(a_Protocol.m_OutPacketBuffer),
-			m_Lock(a_Protocol.m_CSPacket)
-		{
-			m_Out.WriteVarInt(a_PacketType);
-		}
-		
-		~cPacketizer();
-
-		void WriteBool(bool a_Value)
-		{
-			m_Out.WriteBool(a_Value);
-		}
-		
-		void WriteByte(Byte a_Value)
-		{
-			m_Out.WriteByte(a_Value);
-		}
-		
-		void WriteChar(char a_Value)
-		{
-			m_Out.WriteChar(a_Value);
-		}
-		
-		void WriteShort(short a_Value)
-		{
-			m_Out.WriteBEShort(a_Value);
-		}
-		
-		void WriteInt(int a_Value)
-		{
-			m_Out.WriteBEInt(a_Value);
-		}
-		
-		void WriteInt64(Int64 a_Value)
-		{
-			m_Out.WriteBEInt64(a_Value);
-		}
-		
-		void WriteFloat(float a_Value)
-		{
-			m_Out.WriteBEFloat(a_Value);
-		}
-		
-		void WriteDouble(double a_Value)
-		{
-			m_Out.WriteBEDouble(a_Value);
-		}
-		
-		void WriteVarInt(UInt32 a_Value)
-		{
-			m_Out.WriteVarInt(a_Value);
-		}
-		
-		void WriteString(const AString & a_Value)
-		{
-			m_Out.WriteVarUTF8String(a_Value);
-		}
-		
-		void WriteBuf(const char * a_Data, size_t a_Size)
-		{
-			m_Out.Write(a_Data, a_Size);
-		}
-		
-		void WriteItem(const cItem & a_Item);
-		void WriteByteAngle(double a_Angle);  // Writes the specified angle using a single byte
-		void WriteFPInt(double a_Value);  // Writes the double value as a 27:5 fixed-point integer
-		void WriteEntityMetadata(const cEntity & a_Entity);  // Writes the metadata for the specified entity, not including the terminating 0x7f
-		void WriteMobMetadata(const cMonster & a_Mob);  // Writes the mob-specific metadata for the specified mob
-		void WriteEntityProperties(const cEntity & a_Entity);  // Writes the entity properties for the specified entity, including the Count field
-		void WriteBlockEntity(const cBlockEntity & a_BlockEntity);
-		
-	protected:
-		cProtocol172 & m_Protocol;
-		cByteBuffer & m_Out;
-		cCSLock m_Lock;
-	} ;
-
 	AString m_ServerAddress;
 	
 	UInt16 m_ServerPort;
@@ -235,12 +152,6 @@ protected:
 	/** Buffer for the received data */
 	cByteBuffer m_ReceivedData;
 	
-	/** Buffer for composing the outgoing packets, through cPacketizer */
-	cByteBuffer m_OutPacketBuffer;
-	
-	/** Buffer for composing packet length (so that each cPacketizer instance doesn't allocate a new cPacketBuffer) */
-	cByteBuffer m_OutPacketLenBuffer;
-	
 	bool m_IsEncrypted;
 	
 	cAesCfb128Decryptor m_Decryptor;
@@ -297,11 +208,14 @@ protected:
 	
 	/** Parses Vanilla plugin messages into specific ClientHandle calls.
 	The message payload is still in the bytebuffer, to be read by this function. */
-	void HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const AString & a_Channel, short a_PayloadLength);
+	void HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const AString & a_Channel, UInt16 a_PayloadLength);
 	
 	/** Sends the data to the client, encrypting them if needed. */
 	virtual void SendData(const char * a_Data, size_t a_Size) override;
 
+	/** Sends the packet to the client. Called by the cPacketizer's destructor. */
+	virtual void SendPacket(cPacketizer & a_Packet) override;
+
 	void SendCompass(const cWorld & a_World);
 	
 	/** Reads an item out of the received data, sets a_Item to the values read. Returns false if not enough received data */
@@ -312,6 +226,24 @@ protected:
 	
 	void StartEncryption(const Byte * a_Key);
 
+	/** Converts the BlockFace received by the protocol into eBlockFace constants.
+	If the received value doesn't match any of our eBlockFace constants, BLOCK_FACE_NONE is returned. */
+	eBlockFace FaceIntToBlockFace(Int8 a_FaceInt);
+
+	/** Writes the item data into a packet. */
+	void WriteItem(cPacketizer & a_Pkt, const cItem & a_Item);
+
+	/** Writes the metadata for the specified entity, not including the terminating 0x7f. */
+	void WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity);
+
+	/** Writes the mob-specific metadata for the specified mob */
+	void WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob);
+
+	/** Writes the entity properties for the specified entity, including the Count field. */
+	void WriteEntityProperties(cPacketizer & a_Pkt, const cEntity & a_Entity);
+
+	/** Writes the block entity data for the specified block entity into the packet. */
+	void WriteBlockEntity(cPacketizer & a_Pkt, const cBlockEntity & a_BlockEntity);
 } ;
 
 
diff --git a/src/Protocol/Protocol18x.cpp b/src/Protocol/Protocol18x.cpp
index 2d1a473d1..a1ca25200 100644
--- a/src/Protocol/Protocol18x.cpp
+++ b/src/Protocol/Protocol18x.cpp
@@ -13,6 +13,7 @@ Implements the 1.8.x protocol classes:
 #include "Protocol18x.h"
 #include "ChunkDataSerializer.h"
 #include "PolarSSL++/Sha1Checksum.h"
+#include "Packetizer.h"
 
 #include "../ClientHandle.h"
 #include "../Root.h"
@@ -49,6 +50,13 @@ Implements the 1.8.x protocol classes:
 
 
 
+/** The slot number that the client uses to indicate "outside the window". */
+static const Int16 SLOT_NUM_OUTSIDE = -999;
+
+
+
+
+
 #define HANDLE_READ(ByteBuf, Proc, Type, Var) \
 	Type Var; \
 	if (!ByteBuf.Proc(Var))\
@@ -98,8 +106,6 @@ cProtocol180::cProtocol180(cClientHandle * a_Client, const AString & a_ServerAdd
 	m_ServerPort(a_ServerPort),
 	m_State(a_State),
 	m_ReceivedData(32 KiB),
-	m_OutPacketBuffer(64 KiB),
-	m_OutPacketLenBuffer(20),  // 20 bytes is more than enough for one VarInt
 	m_IsEncrypted(false),
 	m_LastSentDimension(dimNotSet)
 {
@@ -155,8 +161,8 @@ void cProtocol180::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x1b);  // Attach Entity packet
-	Pkt.WriteInt(a_Entity.GetUniqueID());
-	Pkt.WriteInt((a_Vehicle != nullptr) ? a_Vehicle->GetUniqueID() : 0);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt32((a_Vehicle != nullptr) ? a_Vehicle->GetUniqueID() : 0);
 	Pkt.WriteBool(false);
 }
 
@@ -169,24 +175,24 @@ void cProtocol180::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, cha
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x24);  // Block Action packet
-	Pkt.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
-	Pkt.WriteByte(a_Byte1);
-	Pkt.WriteByte(a_Byte2);
-	Pkt.WriteVarInt(a_BlockType);
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WriteBEInt8(a_Byte1);
+	Pkt.WriteBEInt8(a_Byte2);
+	Pkt.WriteVarInt32(a_BlockType);
 }
 
 
 
 
 
-void cProtocol180::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
+void cProtocol180::SendBlockBreakAnim(UInt32 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.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
-	Pkt.WriteChar(a_Stage);
+	Pkt.WriteVarInt32(a_EntityID);
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WriteBEInt8(a_Stage);
 }
 
 
@@ -198,8 +204,8 @@ void cProtocol180::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLO
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x23);  // Block Change packet
-	Pkt.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
-	Pkt.WriteVarInt(((UInt32)a_BlockType << 4) | ((UInt32)a_BlockMeta & 15));
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WriteVarInt32(((UInt32)a_BlockType << 4) | ((UInt32)a_BlockMeta & 15));
 }
 
 
@@ -211,14 +217,14 @@ void cProtocol180::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockV
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x22);  // Multi Block Change packet
-	Pkt.WriteInt(a_ChunkX);
-	Pkt.WriteInt(a_ChunkZ);
-	Pkt.WriteVarInt((UInt32)a_Changes.size());
+	Pkt.WriteBEInt32(a_ChunkX);
+	Pkt.WriteBEInt32(a_ChunkZ);
+	Pkt.WriteVarInt32((UInt32)a_Changes.size());
 	for (sSetBlockVector::const_iterator itr = a_Changes.begin(), end = a_Changes.end(); itr != end; ++itr)
 	{
-		short Coords = (short) (itr->m_RelY | (itr->m_RelZ << 8) | (itr->m_RelX << 12));
-		Pkt.WriteShort(Coords);
-		Pkt.WriteVarInt((itr->m_BlockType & 0xFFF) << 4 | (itr->m_BlockMeta & 0xF));
+		Int16 Coords = static_cast<Int16>(itr->m_RelY | (itr->m_RelZ << 8) | (itr->m_RelX << 12));
+		Pkt.WriteBEInt16(Coords);
+		Pkt.WriteVarInt32((itr->m_BlockType & 0xFFF) << 4 | (itr->m_BlockMeta & 0xF));
 	}  // for itr - a_Changes[]
 }
 
@@ -232,7 +238,7 @@ void cProtocol180::SendChat(const AString & a_Message)
 	
 	cPacketizer Pkt(*this, 0x02);  // Chat Message packet
 	Pkt.WriteString(Printf("{\"text\":\"%s\"}", EscapeString(a_Message).c_str()));
-	Pkt.WriteChar(0);
+	Pkt.WriteBEInt8(0);
 }
 
 
@@ -249,7 +255,7 @@ void cProtocol180::SendChat(const cCompositeChat & a_Message)
 	// Send the message to the client:
 	cPacketizer Pkt(*this, 0x02);
 	Pkt.WriteString(a_Message.CreateJsonString(ShouldUseChatPrefixes));
-	Pkt.WriteChar(0);
+	Pkt.WriteBEInt8(0);
 }
 
 
@@ -277,8 +283,8 @@ void cProtocol180::SendCollectEntity(const cEntity & a_Entity, const cPlayer & a
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0d);  // Collect Item packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteVarInt(a_Player.GetUniqueID());
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(a_Player.GetUniqueID());
 }
 
 
@@ -290,8 +296,8 @@ void cProtocol180::SendDestroyEntity(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x13);  // Destroy Entities packet
-	Pkt.WriteVarInt(1);
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(1);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
 }
 
 
@@ -328,7 +334,7 @@ void cProtocol180::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.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
 }
 
 
@@ -340,10 +346,10 @@ void cProtocol180::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, in
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x1D);  // Entity Effect packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(a_EffectID);
-	Pkt.WriteByte(a_Amplifier);
-	Pkt.WriteVarInt((UInt32)a_Duration);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt8(static_cast<UInt8>(a_EffectID));
+	Pkt.WriteBEUInt8(static_cast<UInt8>(a_Amplifier));
+	Pkt.WriteVarInt32((UInt32)a_Duration);
 	Pkt.WriteBool(false);  // Hide particles
 }
 
@@ -356,9 +362,9 @@ void cProtocol180::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x04);  // Entity Equipment packet
-	Pkt.WriteVarInt((UInt32)a_Entity.GetUniqueID());
-	Pkt.WriteShort(a_SlotNum);
-	Pkt.WriteItem(a_Item);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt16(a_SlotNum);
+	WriteItem(Pkt, a_Item);
 }
 
 
@@ -370,7 +376,7 @@ void cProtocol180::SendEntityHeadLook(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x19);  // Entity Head Look packet
-	Pkt.WriteVarInt((UInt32)a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetHeadYaw());
 }
 
@@ -383,7 +389,7 @@ void cProtocol180::SendEntityLook(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x16);  // Entity Look packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 	Pkt.WriteBool(a_Entity.IsOnGround());
@@ -398,9 +404,9 @@ void cProtocol180::SendEntityMetadata(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x1c);  // Entity Metadata packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteEntityMetadata(a_Entity);
-	Pkt.WriteByte(0x7f);  // The termination byte
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	WriteEntityMetadata(Pkt, a_Entity);
+	Pkt.WriteBEUInt8(0x7f);  // The termination byte
 }
 
 
@@ -412,8 +418,8 @@ void cProtocol180::SendEntityProperties(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteEntityProperties(a_Entity);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	WriteEntityProperties(Pkt, a_Entity);
 }
 
 
@@ -425,10 +431,10 @@ void cProtocol180::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x15);  // Entity Relative Move packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(a_RelX);
-	Pkt.WriteByte(a_RelY);
-	Pkt.WriteByte(a_RelZ);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_RelX);
+	Pkt.WriteBEInt8(a_RelY);
+	Pkt.WriteBEInt8(a_RelZ);
 	Pkt.WriteBool(a_Entity.IsOnGround());
 }
 
@@ -441,10 +447,10 @@ void cProtocol180::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX,
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x17);  // Entity Look And Relative Move packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(a_RelX);
-	Pkt.WriteByte(a_RelY);
-	Pkt.WriteByte(a_RelZ);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_RelX);
+	Pkt.WriteBEInt8(a_RelY);
+	Pkt.WriteBEInt8(a_RelZ);
 	Pkt.WriteByteAngle(a_Entity.GetYaw());
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 	Pkt.WriteBool(a_Entity.IsOnGround());
@@ -459,8 +465,8 @@ void cProtocol180::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);
+	Pkt.WriteBEUInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_Status);
 }
 
 
@@ -472,11 +478,11 @@ void cProtocol180::SendEntityVelocity(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x12);  // Entity Velocity packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
 	// 400 = 8000 / 20 ... Conversion from our speed in m/s to 8000 m/tick
-	Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400));
-	Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400));
-	Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400));
+	Pkt.WriteBEInt16((short)(a_Entity.GetSpeedX() * 400));
+	Pkt.WriteBEInt16((short)(a_Entity.GetSpeedY() * 400));
+	Pkt.WriteBEInt16((short)(a_Entity.GetSpeedZ() * 400));
 }
 
 
@@ -488,20 +494,20 @@ void cProtocol180::SendExplosion(double a_BlockX, double a_BlockY, double a_Bloc
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x27);  // Explosion packet
-	Pkt.WriteFloat((float)a_BlockX);
-	Pkt.WriteFloat((float)a_BlockY);
-	Pkt.WriteFloat((float)a_BlockZ);
-	Pkt.WriteFloat((float)a_Radius);
-	Pkt.WriteInt((int)a_BlocksAffected.size());
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockX));
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockY));
+	Pkt.WriteBEFloat(static_cast<float>(a_BlockZ));
+	Pkt.WriteBEFloat(static_cast<float>(a_Radius));
+	Pkt.WriteBEUInt32(static_cast<UInt32>(a_BlocksAffected.size()));
 	for (cVector3iArray::const_iterator itr = a_BlocksAffected.begin(), end = a_BlocksAffected.end(); itr != end; ++itr)
 	{
-		Pkt.WriteChar((char)itr->x);
-		Pkt.WriteChar((char)itr->y);
-		Pkt.WriteChar((char)itr->z);
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->x));
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->y));
+		Pkt.WriteBEInt8(static_cast<Int8>(itr->z));
 	}  // for itr - a_BlockAffected[]
-	Pkt.WriteFloat((float)a_PlayerMotion.x);
-	Pkt.WriteFloat((float)a_PlayerMotion.y);
-	Pkt.WriteFloat((float)a_PlayerMotion.z);
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.x));
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.y));
+	Pkt.WriteBEFloat(static_cast<float>(a_PlayerMotion.z));
 }
 
 
@@ -513,8 +519,8 @@ void cProtocol180::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);
+	Pkt.WriteBEUInt8(3);  // Reason: Change game mode
+	Pkt.WriteBEFloat(static_cast<float>(a_GameMode));  // The protocol really represents the value with a float!
 }
 
 
@@ -527,9 +533,9 @@ void cProtocol180::SendHealth(void)
 
 	cPacketizer Pkt(*this, 0x06);  // Update Health packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteFloat((float)Player->GetHealth());
-	Pkt.WriteVarInt((UInt32)Player->GetFoodLevel());
-	Pkt.WriteFloat((float)Player->GetFoodSaturationLevel());
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetHealth()));
+	Pkt.WriteVarInt32((UInt32)Player->GetFoodLevel());
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetFoodSaturationLevel()));
 }
 
 
@@ -541,9 +547,9 @@ void cProtocol180::SendInventorySlot(char a_WindowID, short a_SlotNum, const cIt
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x2f);  // Set Slot packet
-	Pkt.WriteChar(a_WindowID);
-	Pkt.WriteShort(a_SlotNum);
-	Pkt.WriteItem(a_Item);
+	Pkt.WriteBEInt8(a_WindowID);
+	Pkt.WriteBEInt16(a_SlotNum);
+	WriteItem(Pkt, a_Item);
 }
 
 
@@ -560,7 +566,7 @@ void cProtocol180::SendKeepAlive(int a_PingID)
 	}
 	
 	cPacketizer Pkt(*this, 0x00);  // Keep Alive packet
-	Pkt.WriteVarInt(a_PingID);
+	Pkt.WriteVarInt32(a_PingID);
 }
 
 
@@ -573,11 +579,11 @@ void cProtocol180::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 	{
 		cServer * Server = cRoot::Get()->GetServer();
 		cPacketizer Pkt(*this, 0x01);  // Join Game packet
-		Pkt.WriteInt(a_Player.GetUniqueID());
-		Pkt.WriteByte((Byte)a_Player.GetEffectiveGameMode() | (Server->IsHardcore() ? 0x08 : 0));  // Hardcore flag bit 4
-		Pkt.WriteChar((char)a_World.GetDimension());
-		Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-		Pkt.WriteByte(Server->GetMaxPlayers());
+		Pkt.WriteBEUInt32(a_Player.GetUniqueID());
+		Pkt.WriteBEUInt8((Byte)a_Player.GetEffectiveGameMode() | (Server->IsHardcore() ? 0x08 : 0));  // Hardcore flag bit 4
+		Pkt.WriteBEInt8((char)a_World.GetDimension());
+		Pkt.WriteBEUInt8(2);  // TODO: Difficulty (set to Normal)
+		Pkt.WriteBEUInt8(Server->GetMaxPlayers());
 		Pkt.WriteString("default");  // Level type - wtf?
 		Pkt.WriteBool(false);  // Reduced Debug Info - wtf?
 	}
@@ -586,13 +592,13 @@ void cProtocol180::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 	// Send the spawn position:
 	{
 		cPacketizer Pkt(*this, 0x05);  // Spawn Position packet
-		Pkt.WritePosition((int)a_World.GetSpawnX(), (int)a_World.GetSpawnY(), (int)a_World.GetSpawnZ());
+		Pkt.WritePosition64((int)a_World.GetSpawnX(), (int)a_World.GetSpawnY(), (int)a_World.GetSpawnZ());
 	}
 
 	// Send the server difficulty:
 	{
 		cPacketizer Pkt(*this, 0x41);
-		Pkt.WriteChar(1);
+		Pkt.WriteBEInt8(1);
 	}
 	
 	// Send player abilities:
@@ -609,7 +615,7 @@ void cProtocol180::SendLoginSuccess(void)
 	// Enable compression:
 	{
 		cPacketizer Pkt(*this, 0x03);  // Set compression packet
-		Pkt.WriteVarInt(256);
+		Pkt.WriteVarInt32(256);
 	}
 
 	m_State = 3;  // State = Game
@@ -633,10 +639,10 @@ void cProtocol180::SendPaintingSpawn(const cPainting & a_Painting)
 	double PosZ = a_Painting.GetPosZ();
 
 	cPacketizer Pkt(*this, 0x10);  // Spawn Painting packet
-	Pkt.WriteVarInt(a_Painting.GetUniqueID());
+	Pkt.WriteVarInt32(a_Painting.GetUniqueID());
 	Pkt.WriteString(a_Painting.GetName().c_str());
-	Pkt.WritePosition((int)PosX, (int)PosY, (int)PosZ);
-	Pkt.WriteChar(a_Painting.GetProtocolFacing());
+	Pkt.WritePosition64((int)PosX, (int)PosY, (int)PosZ);
+	Pkt.WriteBEInt8(a_Painting.GetProtocolFacing());
 }
 
 
@@ -648,19 +654,19 @@ void cProtocol180::SendMapColumn(int a_ID, int a_X, int a_Y, const Byte * a_Colo
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x34);
-	Pkt.WriteVarInt(a_ID);
-	Pkt.WriteByte(m_Scale);
+	Pkt.WriteVarInt32(a_ID);
+	Pkt.WriteBEUInt8(m_Scale);
 
-	Pkt.WriteVarInt(0);
-	Pkt.WriteByte(1);
-	Pkt.WriteByte(a_Length);
-	Pkt.WriteByte(a_X);
-	Pkt.WriteByte(a_Y);
+	Pkt.WriteVarInt32(0);
+	Pkt.WriteBEUInt8(1);
+	Pkt.WriteBEUInt8(a_Length);
+	Pkt.WriteBEUInt8(a_X);
+	Pkt.WriteBEUInt8(a_Y);
 
-	Pkt.WriteVarInt(a_Length);
+	Pkt.WriteVarInt32(a_Length);
 	for (unsigned int i = 0; i < a_Length; ++i)
 	{
-		Pkt.WriteByte(a_Colors[i]);
+		Pkt.WriteBEUInt8(a_Colors[i]);
 	}
 }
 
@@ -673,18 +679,18 @@ void cProtocol180::SendMapDecorators(int a_ID, const cMapDecoratorList & a_Decor
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x34);
-	Pkt.WriteVarInt(a_ID);
-	Pkt.WriteByte(m_Scale);
-	Pkt.WriteVarInt(a_Decorators.size());
+	Pkt.WriteVarInt32(a_ID);
+	Pkt.WriteBEUInt8(m_Scale);
+	Pkt.WriteVarInt32(a_Decorators.size());
 
 	for (cMapDecoratorList::const_iterator it = a_Decorators.begin(); it != a_Decorators.end(); ++it)
 	{
-		Pkt.WriteByte((it->GetType() << 4) | (it->GetRot() & 0xf));
-		Pkt.WriteByte(it->GetPixelX());
-		Pkt.WriteByte(it->GetPixelZ());
+		Pkt.WriteBEUInt8((it->GetType() << 4) | (it->GetRot() & 0xf));
+		Pkt.WriteBEUInt8(it->GetPixelX());
+		Pkt.WriteBEUInt8(it->GetPixelZ());
 	}
 
-	Pkt.WriteByte(0);
+	Pkt.WriteBEUInt8(0);
 }
 
 
@@ -709,22 +715,22 @@ void cProtocol180::SendPickupSpawn(const cPickup & a_Pickup)
 	
 	{
 		cPacketizer Pkt(*this, 0x0e);  // Spawn Object packet
-		Pkt.WriteVarInt(a_Pickup.GetUniqueID());
-		Pkt.WriteByte(2);  // Type = Pickup
+		Pkt.WriteVarInt32(a_Pickup.GetUniqueID());
+		Pkt.WriteBEUInt8(2);  // Type = Pickup
 		Pkt.WriteFPInt(a_Pickup.GetPosX());
 		Pkt.WriteFPInt(a_Pickup.GetPosY());
 		Pkt.WriteFPInt(a_Pickup.GetPosZ());
 		Pkt.WriteByteAngle(a_Pickup.GetYaw());
 		Pkt.WriteByteAngle(a_Pickup.GetPitch());
-		Pkt.WriteInt(0);  // No object data
+		Pkt.WriteBEInt32(0);  // No object data
 	}
 
 	{
 		cPacketizer Pkt(*this, 0x1c);  // Entity Metadata packet
-		Pkt.WriteVarInt(a_Pickup.GetUniqueID());
-		Pkt.WriteByte((0x05 << 5) | 10);  // Slot type + index 10
-		Pkt.WriteItem(a_Pickup.GetItem());
-		Pkt.WriteByte(0x7f);  // End of metadata
+		Pkt.WriteVarInt32(a_Pickup.GetUniqueID());
+		Pkt.WriteBEUInt8((0x05 << 5) | 10);  // Slot type + index 10
+		WriteItem(Pkt, a_Pickup.GetItem());
+		Pkt.WriteBEUInt8(0x7f);  // End of metadata
 	}
 }
 
@@ -752,9 +758,9 @@ void cProtocol180::SendPlayerAbilities(void)
 	{
 		Flags |= 0x04;
 	}
-	Pkt.WriteByte(Flags);
-	Pkt.WriteFloat((float)(0.05 * Player->GetFlyingMaxSpeed()));
-	Pkt.WriteFloat((float)(0.1 * Player->GetNormalMaxSpeed()));
+	Pkt.WriteBEUInt8(Flags);
+	Pkt.WriteBEFloat(static_cast<float>(0.05 * Player->GetFlyingMaxSpeed()));
+	Pkt.WriteBEFloat(static_cast<float>(0.1 * Player->GetNormalMaxSpeed()));
 }
 
 
@@ -766,8 +772,8 @@ void cProtocol180::SendEntityAnimation(const cEntity & a_Entity, char a_Animatio
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0b);  // Animation packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteChar(a_Animation);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEInt8(a_Animation);
 }
 
 
@@ -780,16 +786,16 @@ void cProtocol180::SendParticleEffect(const AString & a_ParticleName, float a_Sr
 	int ParticleID = GetParticleID(a_ParticleName);
 
 	cPacketizer Pkt(*this, 0x2A);
-	Pkt.WriteInt(ParticleID);
+	Pkt.WriteBEInt32(ParticleID);
 	Pkt.WriteBool(false);
-	Pkt.WriteFloat(a_SrcX);
-	Pkt.WriteFloat(a_SrcY);
-	Pkt.WriteFloat(a_SrcZ);
-	Pkt.WriteFloat(a_OffsetX);
-	Pkt.WriteFloat(a_OffsetY);
-	Pkt.WriteFloat(a_OffsetZ);
-	Pkt.WriteFloat(a_ParticleData);
-	Pkt.WriteInt(a_ParticleAmount);
+	Pkt.WriteBEFloat(a_SrcX);
+	Pkt.WriteBEFloat(a_SrcY);
+	Pkt.WriteBEFloat(a_SrcZ);
+	Pkt.WriteBEFloat(a_OffsetX);
+	Pkt.WriteBEFloat(a_OffsetY);
+	Pkt.WriteBEFloat(a_OffsetZ);
+	Pkt.WriteBEFloat(a_ParticleData);
+	Pkt.WriteBEInt32(a_ParticleAmount);
 }
 
 
@@ -801,13 +807,13 @@ void cProtocol180::SendPlayerListAddPlayer(const cPlayer & a_Player)
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
-	Pkt.WriteVarInt(0);
-	Pkt.WriteVarInt(1);
+	Pkt.WriteVarInt32(0);
+	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
 	Pkt.WriteString(a_Player.GetPlayerListName());
 
 	const Json::Value & Properties = a_Player.GetClientHandle()->GetProperties();
-	Pkt.WriteVarInt(Properties.size());
+	Pkt.WriteVarInt32(Properties.size());
 	for (Json::Value::iterator itr = Properties.begin(), end = Properties.end(); itr != end; ++itr)
 	{
 		Pkt.WriteString(((Json::Value)*itr).get("name", "").asString());
@@ -824,8 +830,8 @@ void cProtocol180::SendPlayerListAddPlayer(const cPlayer & a_Player)
 		}
 	}
 
-	Pkt.WriteVarInt((UInt32)a_Player.GetGameMode());
-	Pkt.WriteVarInt((UInt32)a_Player.GetClientHandle()->GetPing());
+	Pkt.WriteVarInt32((UInt32)a_Player.GetGameMode());
+	Pkt.WriteVarInt32((UInt32)a_Player.GetClientHandle()->GetPing());
 	Pkt.WriteBool(false);
 }
 
@@ -838,8 +844,8 @@ void cProtocol180::SendPlayerListRemovePlayer(const cPlayer & a_Player)
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
-	Pkt.WriteVarInt(4);
-	Pkt.WriteVarInt(1);
+	Pkt.WriteVarInt32(4);
+	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
 }
 
@@ -852,10 +858,10 @@ void cProtocol180::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
-	Pkt.WriteVarInt(1);
-	Pkt.WriteVarInt(1);
+	Pkt.WriteVarInt32(1);
+	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
-	Pkt.WriteVarInt((UInt32)a_Player.GetGameMode());
+	Pkt.WriteVarInt32((UInt32)a_Player.GetGameMode());
 }
 
 
@@ -870,10 +876,10 @@ void cProtocol180::SendPlayerListUpdatePing(const cPlayer & a_Player)
 	if (ClientHandle != nullptr)
 	{
 		cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
-		Pkt.WriteVarInt(2);
-		Pkt.WriteVarInt(1);
+		Pkt.WriteVarInt32(2);
+		Pkt.WriteVarInt32(1);
 		Pkt.WriteUUID(a_Player.GetUUID());
-		Pkt.WriteVarInt(static_cast<UInt32>(ClientHandle->GetPing()));
+		Pkt.WriteVarInt32(static_cast<UInt32>(ClientHandle->GetPing()));
 	}
 }
 
@@ -886,8 +892,8 @@ void cProtocol180::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, con
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x38);  // Playerlist Item packet
-	Pkt.WriteVarInt(3);
-	Pkt.WriteVarInt(1);
+	Pkt.WriteVarInt32(3);
+	Pkt.WriteVarInt32(1);
 	Pkt.WriteUUID(a_Player.GetUUID());
 
 	if (a_CustomName.empty())
@@ -911,22 +917,22 @@ void cProtocol180::SendPlayerMaxSpeed(void)
 	
 	cPacketizer Pkt(*this, 0x20);  // Entity Properties
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteVarInt(Player->GetUniqueID());
-	Pkt.WriteInt(1);  // Count
+	Pkt.WriteVarInt32(Player->GetUniqueID());
+	Pkt.WriteBEInt32(1);  // Count
 	Pkt.WriteString("generic.movementSpeed");
 	// The default game speed is 0.1, multiply that value by the relative speed:
-	Pkt.WriteDouble(0.1 * Player->GetNormalMaxSpeed());
+	Pkt.WriteBEDouble(0.1 * Player->GetNormalMaxSpeed());
 	if (Player->IsSprinting())
 	{
-		Pkt.WriteVarInt(1);  // Modifier count
-		Pkt.WriteInt64(0x662a6b8dda3e4c1c);
-		Pkt.WriteInt64(0x881396ea6097278d);  // UUID of the modifier
-		Pkt.WriteDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
-		Pkt.WriteByte(2);
+		Pkt.WriteVarInt32(1);  // Modifier count
+		Pkt.WriteBEUInt64(0x662a6b8dda3e4c1c);
+		Pkt.WriteBEUInt64(0x881396ea6097278d);  // UUID of the modifier
+		Pkt.WriteBEDouble(Player->GetSprintingMaxSpeed() - Player->GetNormalMaxSpeed());
+		Pkt.WriteBEUInt8(2);
 	}
 	else
 	{
-		Pkt.WriteVarInt(0);  // Modifier count
+		Pkt.WriteVarInt32(0);  // Modifier count
 	}
 }
 
@@ -940,15 +946,15 @@ void cProtocol180::SendPlayerMoveLook(void)
 	
 	cPacketizer Pkt(*this, 0x08);  // Player Position And Look packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteDouble(Player->GetPosX());
+	Pkt.WriteBEDouble(Player->GetPosX());
 	
 	// The "+ 0.001" is there because otherwise the player falls through the block they were standing on.
-	Pkt.WriteDouble(Player->GetPosY() + 0.001);
+	Pkt.WriteBEDouble(Player->GetPosY() + 0.001);
 	
-	Pkt.WriteDouble(Player->GetPosZ());
-	Pkt.WriteFloat((float)Player->GetYaw());
-	Pkt.WriteFloat((float)Player->GetPitch());
-	Pkt.WriteByte(0);
+	Pkt.WriteBEDouble(Player->GetPosZ());
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetYaw()));
+	Pkt.WriteBEFloat(static_cast<float>(Player->GetPitch()));
+	Pkt.WriteBEUInt8(0);
 }
 
 
@@ -969,7 +975,7 @@ void cProtocol180::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.WriteVarInt32(a_Player.GetUniqueID());
 	Pkt.WriteUUID(cMojangAPI::MakeUUIDShort(a_Player.GetUUID()));
 	Pkt.WriteFPInt(a_Player.GetPosX());
 	Pkt.WriteFPInt(a_Player.GetPosY() + 0.001);  // The "+ 0.001" is there because otherwise the player falls through the block they were standing on.
@@ -977,12 +983,12 @@ void cProtocol180::SendPlayerSpawn(const cPlayer & a_Player)
 	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((4 << 5 | (2 & 0x1F)) & 0xFF);
+	Pkt.WriteBEInt16(ItemType);
+	Pkt.WriteBEUInt8((3 << 5) | 6);  // Metadata: float + index 6
+	Pkt.WriteBEFloat(static_cast<float>(a_Player.GetHealth()));
+	Pkt.WriteBEUInt8((4 << 5 | (2 & 0x1F)) & 0xFF);
 	Pkt.WriteString(a_Player.GetName());
-	Pkt.WriteByte(0x7f);  // Metadata: end
+	Pkt.WriteBEUInt8(0x7f);  // Metadata: end
 }
 
 
@@ -1007,8 +1013,8 @@ void cProtocol180::SendRemoveEntityEffect(const cEntity & a_Entity, int a_Effect
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x1e);
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(a_EffectID);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt8(a_EffectID);
 }
 
 
@@ -1025,9 +1031,9 @@ void cProtocol180::SendRespawn(eDimension a_Dimension, bool a_ShouldIgnoreDimens
 
 	cPacketizer Pkt(*this, 0x07);  // Respawn packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteInt((int)a_Dimension);
-	Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
-	Pkt.WriteByte((Byte)Player->GetEffectiveGameMode());
+	Pkt.WriteBEInt32((int)a_Dimension);
+	Pkt.WriteBEUInt8(2);  // TODO: Difficulty (set to Normal)
+	Pkt.WriteBEUInt8((Byte)Player->GetEffectiveGameMode());
 	Pkt.WriteString("default");
 	m_LastSentDimension = a_Dimension;
 }
@@ -1042,9 +1048,9 @@ void cProtocol180::SendExperience(void)
 	
 	cPacketizer Pkt(*this, 0x1f);  // Experience Packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteFloat(Player->GetXpPercentage());
-	Pkt.WriteVarInt((UInt32)Player->GetXpLevel());
-	Pkt.WriteVarInt((UInt32)Player->GetCurrentXp());
+	Pkt.WriteBEFloat(Player->GetXpPercentage());
+	Pkt.WriteVarInt32((UInt32)Player->GetXpLevel());
+	Pkt.WriteVarInt32((UInt32)Player->GetCurrentXp());
 }
 
 
@@ -1056,11 +1062,11 @@ void cProtocol180::SendExperienceOrb(const cExpOrb & a_ExpOrb)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x11);
-	Pkt.WriteVarInt(a_ExpOrb.GetUniqueID());
+	Pkt.WriteVarInt32(a_ExpOrb.GetUniqueID());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosX());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosY());
 	Pkt.WriteFPInt(a_ExpOrb.GetPosZ());
-	Pkt.WriteShort(a_ExpOrb.GetReward());
+	Pkt.WriteBEInt16(a_ExpOrb.GetReward());
 }
 
 
@@ -1073,7 +1079,7 @@ void cProtocol180::SendScoreboardObjective(const AString & a_Name, const AString
 	
 	cPacketizer Pkt(*this, 0x3b);
 	Pkt.WriteString(a_Name);
-	Pkt.WriteByte(a_Mode);
+	Pkt.WriteBEUInt8(a_Mode);
 	if ((a_Mode == 0) || (a_Mode == 2))
 	{
 		Pkt.WriteString(a_DisplayName);
@@ -1091,12 +1097,12 @@ void cProtocol180::SendScoreUpdate(const AString & a_Objective, const AString &
 	
 	cPacketizer Pkt(*this, 0x3c);
 	Pkt.WriteString(a_Player);
-	Pkt.WriteByte(a_Mode);
+	Pkt.WriteBEUInt8(a_Mode);
 	Pkt.WriteString(a_Objective);
 
 	if (a_Mode != 1)
 	{
-		Pkt.WriteVarInt((UInt32) a_Score);
+		Pkt.WriteVarInt32((UInt32) a_Score);
 	}
 }
 
@@ -1109,7 +1115,7 @@ void cProtocol180::SendDisplayObjective(const AString & a_Objective, cScoreboard
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x3d);
-	Pkt.WriteByte((int) a_Display);
+	Pkt.WriteBEUInt8((int) a_Display);
 	Pkt.WriteString(a_Objective);
 }
 
@@ -1123,11 +1129,11 @@ void cProtocol180::SendSoundEffect(const AString & a_SoundName, double a_X, doub
 
 	cPacketizer Pkt(*this, 0x29);  // Sound Effect packet
 	Pkt.WriteString(a_SoundName);
-	Pkt.WriteInt((int)(a_X * 8.0));
-	Pkt.WriteInt((int)(a_Y * 8.0));
-	Pkt.WriteInt((int)(a_Z * 8.0));
-	Pkt.WriteFloat(a_Volume);
-	Pkt.WriteByte((Byte)(a_Pitch * 63));
+	Pkt.WriteBEInt32((int)(a_X * 8.0));
+	Pkt.WriteBEInt32((int)(a_Y * 8.0));
+	Pkt.WriteBEInt32((int)(a_Z * 8.0));
+	Pkt.WriteBEFloat(a_Volume);
+	Pkt.WriteBEUInt8((Byte)(a_Pitch * 63));
 }
 
 
@@ -1139,9 +1145,9 @@ void cProtocol180::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_Src
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x28);  // Effect packet
-	Pkt.WriteInt(a_EffectID);
-	Pkt.WritePosition(a_SrcX, a_SrcY, a_SrcZ);
-	Pkt.WriteInt(a_Data);
+	Pkt.WriteBEInt32(a_EffectID);
+	Pkt.WritePosition64(a_SrcX, a_SrcY, a_SrcZ);
+	Pkt.WriteBEInt32(a_Data);
 	Pkt.WriteBool(false);
 }
 
@@ -1154,17 +1160,17 @@ void cProtocol180::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
+	Pkt.WriteVarInt32(a_FallingBlock.GetUniqueID());
+	Pkt.WriteBEUInt8(70);  // Falling block
 	Pkt.WriteFPInt(a_FallingBlock.GetPosX());
 	Pkt.WriteFPInt(a_FallingBlock.GetPosY());
 	Pkt.WriteFPInt(a_FallingBlock.GetPosZ());
 	Pkt.WriteByteAngle(a_FallingBlock.GetYaw());
 	Pkt.WriteByteAngle(a_FallingBlock.GetPitch());
-	Pkt.WriteInt(((int)a_FallingBlock.GetBlockType()) | (((int)a_FallingBlock.GetBlockMeta()) << 12));
-	Pkt.WriteShort((short)(a_FallingBlock.GetSpeedX() * 400));
-	Pkt.WriteShort((short)(a_FallingBlock.GetSpeedY() * 400));
-	Pkt.WriteShort((short)(a_FallingBlock.GetSpeedZ() * 400));
+	Pkt.WriteBEInt32(((int)a_FallingBlock.GetBlockType()) | (((int)a_FallingBlock.GetBlockMeta()) << 12));
+	Pkt.WriteBEInt16((short)(a_FallingBlock.GetSpeedX() * 400));
+	Pkt.WriteBEInt16((short)(a_FallingBlock.GetSpeedY() * 400));
+	Pkt.WriteBEInt16((short)(a_FallingBlock.GetSpeedZ() * 400));
 }
 
 
@@ -1176,19 +1182,19 @@ void cProtocol180::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());
+	Pkt.WriteVarInt32(a_Mob.GetUniqueID());
+	Pkt.WriteBEUInt8((Byte)a_Mob.GetMobType());
 	Pkt.WriteFPInt(a_Mob.GetPosX());
 	Pkt.WriteFPInt(a_Mob.GetPosY());
 	Pkt.WriteFPInt(a_Mob.GetPosZ());
 	Pkt.WriteByteAngle(a_Mob.GetPitch());
 	Pkt.WriteByteAngle(a_Mob.GetHeadYaw());
 	Pkt.WriteByteAngle(a_Mob.GetYaw());
-	Pkt.WriteShort((short)(a_Mob.GetSpeedX() * 400));
-	Pkt.WriteShort((short)(a_Mob.GetSpeedY() * 400));
-	Pkt.WriteShort((short)(a_Mob.GetSpeedZ() * 400));
-	Pkt.WriteEntityMetadata(a_Mob);
-	Pkt.WriteByte(0x7f);  // Metadata terminator
+	Pkt.WriteBEInt16((short)(a_Mob.GetSpeedX() * 400));
+	Pkt.WriteBEInt16((short)(a_Mob.GetSpeedY() * 400));
+	Pkt.WriteBEInt16((short)(a_Mob.GetSpeedZ() * 400));
+	WriteEntityMetadata(Pkt, a_Mob);
+	Pkt.WriteBEUInt8(0x7f);  // Metadata terminator
 }
 
 
@@ -1207,19 +1213,19 @@ void cProtocol180::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType,
 	}
 
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WriteByte(a_ObjectType);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WriteBEUInt8(a_ObjectType);
 	Pkt.WriteFPInt(PosX);
 	Pkt.WriteFPInt(a_Entity.GetPosY());
 	Pkt.WriteFPInt(PosZ);
 	Pkt.WriteByteAngle(a_Entity.GetPitch());
 	Pkt.WriteByteAngle(Yaw);
-	Pkt.WriteInt(a_ObjectData);
+	Pkt.WriteBEInt32(a_ObjectData);
 	if (a_ObjectData != 0)
 	{
-		Pkt.WriteShort((short)(a_Entity.GetSpeedX() * 400));
-		Pkt.WriteShort((short)(a_Entity.GetSpeedY() * 400));
-		Pkt.WriteShort((short)(a_Entity.GetSpeedZ() * 400));
+		Pkt.WriteBEInt16((short)(a_Entity.GetSpeedX() * 400));
+		Pkt.WriteBEInt16((short)(a_Entity.GetSpeedY() * 400));
+		Pkt.WriteBEInt16((short)(a_Entity.GetSpeedZ() * 400));
 	}
 }
 
@@ -1232,19 +1238,19 @@ void cProtocol180::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleTyp
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0xe);  // Spawn Object packet
-	Pkt.WriteVarInt(a_Vehicle.GetUniqueID());
-	Pkt.WriteByte(a_VehicleType);
+	Pkt.WriteVarInt32(a_Vehicle.GetUniqueID());
+	Pkt.WriteBEUInt8(a_VehicleType);
 	Pkt.WriteFPInt(a_Vehicle.GetPosX());
 	Pkt.WriteFPInt(a_Vehicle.GetPosY());
 	Pkt.WriteFPInt(a_Vehicle.GetPosZ());
 	Pkt.WriteByteAngle(a_Vehicle.GetPitch());
 	Pkt.WriteByteAngle(a_Vehicle.GetYaw());
-	Pkt.WriteInt(a_VehicleSubType);
+	Pkt.WriteBEInt32(a_VehicleSubType);
 	if (a_VehicleSubType != 0)
 	{
-		Pkt.WriteShort((short)(a_Vehicle.GetSpeedX() * 400));
-		Pkt.WriteShort((short)(a_Vehicle.GetSpeedY() * 400));
-		Pkt.WriteShort((short)(a_Vehicle.GetSpeedZ() * 400));
+		Pkt.WriteBEInt16((short)(a_Vehicle.GetSpeedX() * 400));
+		Pkt.WriteBEInt16((short)(a_Vehicle.GetSpeedY() * 400));
+		Pkt.WriteBEInt16((short)(a_Vehicle.GetSpeedZ() * 400));
 	}
 }
 
@@ -1257,7 +1263,7 @@ void cProtocol180::SendStatistics(const cStatManager & a_Manager)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x37);
-	Pkt.WriteVarInt(statCount);  // TODO 2014-05-11 xdot: Optimization: Send "dirty" statistics only
+	Pkt.WriteVarInt32(statCount);  // TODO 2014-05-11 xdot: Optimization: Send "dirty" statistics only
 
 	for (size_t i = 0; i < (size_t)statCount; ++i)
 	{
@@ -1265,7 +1271,7 @@ void cProtocol180::SendStatistics(const cStatManager & a_Manager)
 		const AString & StatName = cStatInfo::GetName((eStatistic) i);
 
 		Pkt.WriteString(StatName);
-		Pkt.WriteVarInt(Value);
+		Pkt.WriteVarInt32(Value);
 	}
 }
 
@@ -1278,7 +1284,7 @@ void cProtocol180::SendTabCompletionResults(const AStringVector & a_Results)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x3a);  // Tab-Complete packet
-	Pkt.WriteVarInt((int)a_Results.size());
+	Pkt.WriteVarInt32((int)a_Results.size());
 
 	for (AStringVector::const_iterator itr = a_Results.begin(), end = a_Results.end(); itr != end; ++itr)
 	{
@@ -1295,7 +1301,7 @@ void cProtocol180::SendTeleportEntity(const cEntity & a_Entity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x18);
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
 	Pkt.WriteFPInt(a_Entity.GetPosX());
 	Pkt.WriteFPInt(a_Entity.GetPosY());
 	Pkt.WriteFPInt(a_Entity.GetPosZ());
@@ -1313,8 +1319,8 @@ void cProtocol180::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
+	Pkt.WriteVarInt32(0);  // EntityID = 0, always
+	Pkt.WriteBEUInt8(1);  // Type = Thunderbolt
 	Pkt.WriteFPInt(a_BlockX);
 	Pkt.WriteFPInt(a_BlockY);
 	Pkt.WriteFPInt(a_BlockZ);
@@ -1334,8 +1340,8 @@ void cProtocol180::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay, bool a_Do
 	}
 	
 	cPacketizer Pkt(*this, 0x03);
-	Pkt.WriteInt64(a_WorldAge);
-	Pkt.WriteInt64(a_TimeOfDay);
+	Pkt.WriteBEInt64(a_WorldAge);
+	Pkt.WriteBEInt64(a_TimeOfDay);
 }
 
 
@@ -1347,11 +1353,11 @@ void cProtocol180::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);
+	Pkt.WriteBEInt32(a_ChunkX);
+	Pkt.WriteBEInt32(a_ChunkZ);
 	Pkt.WriteBool(true);
-	Pkt.WriteShort(0);  // Primary bitmap
-	Pkt.WriteVarInt(0);  // Data size
+	Pkt.WriteBEInt16(0);  // Primary bitmap
+	Pkt.WriteVarInt32(0);  // Data size
 }
 
 
@@ -1362,7 +1368,7 @@ void cProtocol180::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x35);  // Update tile entity packet
-	Pkt.WritePosition(a_BlockEntity.GetPosX(), a_BlockEntity.GetPosY(), a_BlockEntity.GetPosZ());
+	Pkt.WritePosition64(a_BlockEntity.GetPosX(), a_BlockEntity.GetPosY(), a_BlockEntity.GetPosZ());
 
 	Byte Action = 0;
 	switch (a_BlockEntity.GetBlockType())
@@ -1374,9 +1380,9 @@ void cProtocol180::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
 		case E_BLOCK_FLOWER_POT:    Action = 5; break;  // Update flower pot
 		default: ASSERT(!"Unhandled or unimplemented BlockEntity update request!"); break;
 	}
-	Pkt.WriteByte(Action);
+	Pkt.WriteBEUInt8(Action);
 
-	Pkt.WriteBlockEntity(a_BlockEntity);
+	WriteBlockEntity(Pkt, a_BlockEntity);
 }
 
 
@@ -1388,7 +1394,7 @@ void cProtocol180::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, cons
 	ASSERT(m_State == 3);  // In game mode?
 
 	cPacketizer Pkt(*this, 0x33);
-	Pkt.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
 
 	Json::StyledWriter JsonWriter;
 	AString Lines[] = { a_Line1, a_Line2, a_Line3, a_Line4 };
@@ -1409,8 +1415,8 @@ void cProtocol180::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_Bloc
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x0a);
-	Pkt.WriteVarInt(a_Entity.GetUniqueID());
-	Pkt.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
+	Pkt.WriteVarInt32(a_Entity.GetUniqueID());
+	Pkt.WritePosition64(a_BlockX, a_BlockY, a_BlockZ);
 }
 
 
@@ -1423,8 +1429,8 @@ void cProtocol180::SendWeather(eWeather a_Weather)
 	
 	{
 		cPacketizer Pkt(*this, 0x2b);  // Change Game State packet
-		Pkt.WriteByte((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
-		Pkt.WriteFloat(0);  // Unused for weather
+		Pkt.WriteBEUInt8((a_Weather == wSunny) ? 1 : 2);  // End rain / begin rain
+		Pkt.WriteBEFloat(0);  // Unused for weather
 	}
 
 	// TODO: Fade effect, somehow
@@ -1439,13 +1445,13 @@ void cProtocol180::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());
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
+	Pkt.WriteBEInt16(a_Window.GetNumSlots());
 	cItems Slots;
 	a_Window.GetSlots(*(m_Client->GetPlayer()), Slots);
 	for (cItems::const_iterator itr = Slots.begin(), end = Slots.end(); itr != end; ++itr)
 	{
-		Pkt.WriteItem(*itr);
+		WriteItem(Pkt, *itr);
 	}  // for itr - Slots[]
 }
 
@@ -1458,7 +1464,7 @@ void cProtocol180::SendWindowClose(const cWindow & a_Window)
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x2e);
-	Pkt.WriteChar(a_Window.GetWindowID());
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
 }
 
 
@@ -1476,7 +1482,7 @@ void cProtocol180::SendWindowOpen(const cWindow & a_Window)
 	}
 
 	cPacketizer Pkt(*this, 0x2d);
-	Pkt.WriteChar(a_Window.GetWindowID());
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
 	Pkt.WriteString(a_Window.GetWindowTypeName());
 	Pkt.WriteString(Printf("{\"text\":\"%s\"}", a_Window.GetWindowTitle().c_str()));
 
@@ -1486,19 +1492,19 @@ void cProtocol180::SendWindowOpen(const cWindow & a_Window)
 		case cWindow::wtEnchantment:
 		case cWindow::wtAnvil:
 		{
-			Pkt.WriteChar(0);
+			Pkt.WriteBEInt8(0);
 			break;
 		}
 		default:
 		{
-			Pkt.WriteChar(a_Window.GetNumNonInventorySlots());
+			Pkt.WriteBEInt8(a_Window.GetNumNonInventorySlots());
 			break;
 		}
 	}
 
 	if (a_Window.GetWindowType() == cWindow::wtAnimalChest)
 	{
-		Pkt.WriteInt(0);  // TODO: The animal's EntityID
+		Pkt.WriteBEInt32(0);  // TODO: The animal's EntityID
 	}
 }
 
@@ -1511,9 +1517,9 @@ void cProtocol180::SendWindowProperty(const cWindow & a_Window, short a_Property
 	ASSERT(m_State == 3);  // In game mode?
 	
 	cPacketizer Pkt(*this, 0x31);  // Window Property packet
-	Pkt.WriteChar(a_Window.GetWindowID());
-	Pkt.WriteShort(a_Property);
-	Pkt.WriteShort(a_Value);
+	Pkt.WriteBEInt8(a_Window.GetWindowID());
+	Pkt.WriteBEInt16(a_Property);
+	Pkt.WriteBEInt16(a_Value);
 }
 
 
@@ -1532,7 +1538,10 @@ bool cProtocol180::CompressPacket(const AString & a_Packet, AString & a_Compress
 		return false;
 	}
 
-	int Status = compress2((Bytef*)CompressedData, &CompressedSize, (const Bytef*)a_Packet.data(), a_Packet.size(), Z_DEFAULT_COMPRESSION);
+	int Status = compress2(
+		reinterpret_cast<Bytef *>(CompressedData), &CompressedSize,
+		reinterpret_cast<const Bytef *>(a_Packet.data()), a_Packet.size(), Z_DEFAULT_COMPRESSION
+	);
 	if (Status != Z_OK)
 	{
 		return false;
@@ -1540,12 +1549,12 @@ bool cProtocol180::CompressPacket(const AString & a_Packet, AString & a_Compress
 
 	AString LengthData;
 	cByteBuffer Buffer(20);
-	Buffer.WriteVarInt((UInt32)a_Packet.size());
+	Buffer.WriteVarInt32(static_cast<UInt32>(a_Packet.size()));
 	Buffer.ReadAll(LengthData);
 	Buffer.CommitRead();
 
-	Buffer.WriteVarInt(CompressedSize + LengthData.size());
-	Buffer.WriteVarInt(a_Packet.size());
+	Buffer.WriteVarInt32(CompressedSize + LengthData.size());
+	Buffer.WriteVarInt32(static_cast<UInt32>(a_Packet.size()));
 	Buffer.ReadAll(LengthData);
 	Buffer.CommitRead();
 
@@ -1943,7 +1952,7 @@ void cProtocol180::HandlePacketStatusPing(cByteBuffer & a_ByteBuffer)
 	HANDLE_READ(a_ByteBuffer, ReadBEInt64, Int64, Timestamp);
 
 	cPacketizer Pkt(*this, 0x01);  // Ping packet
-	Pkt.WriteInt64(Timestamp);
+	Pkt.WriteBEInt64(Timestamp);
 }
 
 
@@ -2080,10 +2089,10 @@ void cProtocol180::HandlePacketLoginStart(cByteBuffer & a_ByteBuffer)
 		cPacketizer Pkt(*this, 0x01);
 		Pkt.WriteString(Server->GetServerID());
 		const AString & PubKeyDer = Server->GetPublicKeyDER();
-		Pkt.WriteVarInt((short)PubKeyDer.size());
+		Pkt.WriteVarInt32((short)PubKeyDer.size());
 		Pkt.WriteBuf(PubKeyDer.data(), PubKeyDer.size());
-		Pkt.WriteVarInt(4);
-		Pkt.WriteInt((int)(intptr_t)this);  // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
+		Pkt.WriteVarInt32(4);
+		Pkt.WriteBEInt32((int)(intptr_t)this);  // Using 'this' as the cryptographic nonce, so that we don't have to generate one each time :)
 		m_Client->SetUsername(Username);
 		return;
 	}
@@ -2106,16 +2115,16 @@ void cProtocol180::HandlePacketAnimation(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, Status);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Status);
 
 	int BlockX, BlockY, BlockZ;
-	if (!a_ByteBuffer.ReadPosition(BlockX, BlockY, BlockZ))
+	if (!a_ByteBuffer.ReadPosition64(BlockX, BlockY, BlockZ))
 	{
 		return;
 	}
 
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, Face);
-	m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), Status);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt8, Int8, Face);
+	m_Client->HandleLeftClick(BlockX, BlockY, BlockZ, FaceIntToBlockFace(Face), Status);
 }
 
 
@@ -2125,24 +2134,20 @@ void cProtocol180::HandlePacketBlockDig(cByteBuffer & a_ByteBuffer)
 void cProtocol180::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer)
 {
 	int BlockX, BlockY, BlockZ;
-	if (!a_ByteBuffer.ReadPosition(BlockX, BlockY, BlockZ))
+	if (!a_ByteBuffer.ReadPosition64(BlockX, BlockY, BlockZ))
 	{
 		return;
 	}
 
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, Face);
-	if (Face == 255)
-	{
-		Face = 0;
-	}
+	HANDLE_READ(a_ByteBuffer, ReadBEInt8, Int8, Face);
 
 	cItem Item;
 	ReadItem(a_ByteBuffer, Item, 3);
 
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorX);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorY);
-	HANDLE_READ(a_ByteBuffer, ReadByte,  Byte, CursorZ);
-	m_Client->HandleRightClick(BlockX, BlockY, BlockZ, static_cast<eBlockFace>(Face), CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem());
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorX);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorY);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, CursorZ);
+	m_Client->HandleRightClick(BlockX, BlockY, BlockZ, FaceIntToBlockFace(Face), CursorX, CursorY, CursorZ, m_Client->GetPlayer()->GetEquippedItem());
 }
 
 
@@ -2162,10 +2167,10 @@ void cProtocol180::HandlePacketChatMessage(cByteBuffer & a_ByteBuffer)
 void cProtocol180::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Locale);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ViewDistance);
-	HANDLE_READ(a_ByteBuffer, ReadByte,          Byte,    ChatFlags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   ViewDistance);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   ChatFlags);
 	HANDLE_READ(a_ByteBuffer, ReadBool,          bool,    ChatColors);
-	HANDLE_READ(a_ByteBuffer, ReadChar,          char,    SkinFlags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,       UInt8,   SkinFlags);
 	
 	m_Client->SetLocale(Locale);
 	m_Client->SetViewDistance(ViewDistance);
@@ -2178,7 +2183,7 @@ void cProtocol180::HandlePacketClientSettings(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar, char, ActionID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, ActionID);
 	switch (ActionID)
 	{
 		case 0:
@@ -2210,13 +2215,13 @@ void cProtocol180::HandlePacketClientStatus(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16, Int16, SlotNum);
 	cItem Item;
 	if (!ReadItem(a_ByteBuffer, Item))
 	{
 		return;
 	}
-	m_Client->HandleCreativeInventory(SlotNum, Item);
+	m_Client->HandleCreativeInventory(SlotNum, Item, (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftClickOutside : caLeftClick);
 }
 
 
@@ -2225,9 +2230,9 @@ void cProtocol180::HandlePacketCreativeInventoryAction(cByteBuffer & a_ByteBuffe
 
 void cProtocol180::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadVarInt, UInt32,  PlayerID);
-	HANDLE_READ(a_ByteBuffer, ReadChar,   char,    Action);
-	HANDLE_READ(a_ByteBuffer, ReadVarInt, UInt32,  JumpBoost);
+	HANDLE_READ(a_ByteBuffer, ReadVarInt,  UInt32, PlayerID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8,  Action);
+	HANDLE_READ(a_ByteBuffer, ReadVarInt,  UInt32, JumpBoost);
 
 	switch (Action)
 	{
@@ -2246,7 +2251,7 @@ void cProtocol180::HandlePacketEntityAction(cByteBuffer & a_ByteBuffer)
 void cProtocol180::HandlePacketKeepAlive(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadVarInt, UInt32, KeepAliveID);
-	m_Client->HandleKeepAlive((int)KeepAliveID);
+	m_Client->HandleKeepAlive(static_cast<int>(KeepAliveID));
 }
 
 
@@ -2265,10 +2270,11 @@ void cProtocol180::HandlePacketPlayer(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketPlayerAbilities(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Flags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Flags);
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, FlyingSpeed);
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, WalkingSpeed);
 
+	// COnvert the bitfield into individual boolean flags:
 	bool IsFlying = false, CanFly = false;
 	if ((Flags & 2) != 0)
 	{
@@ -2359,7 +2365,7 @@ void cProtocol180::HandlePacketPluginMessage(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketSlotSelect(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16, Int16, SlotNum);
 	m_Client->HandleSlotSelected(SlotNum);
 }
 
@@ -2371,7 +2377,7 @@ void cProtocol180::HandlePacketSteerVehicle(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Forward);
 	HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, Sideways);
-	HANDLE_READ(a_ByteBuffer, ReadChar,    char,  Flags);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Flags);
 
 	if ((Flags & 0x2) != 0)
 	{
@@ -2390,7 +2396,7 @@ void cProtocol180::HandlePacketSteerVehicle(cByteBuffer & a_ByteBuffer)
 void cProtocol180::HandlePacketTabComplete(cByteBuffer & a_ByteBuffer)
 {
 	HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Text);
-	HANDLE_READ(a_ByteBuffer, ReadBool, bool, HasPosition);
+	HANDLE_READ(a_ByteBuffer, ReadBool,          bool,    HasPosition);
 
 	if (HasPosition)
 	{
@@ -2407,7 +2413,7 @@ void cProtocol180::HandlePacketTabComplete(cByteBuffer & a_ByteBuffer)
 void cProtocol180::HandlePacketUpdateSign(cByteBuffer & a_ByteBuffer)
 {
 	int BlockX, BlockY, BlockZ;
-	if (!a_ByteBuffer.ReadPosition(BlockX, BlockY, BlockZ))
+	if (!a_ByteBuffer.ReadPosition64(BlockX, BlockY, BlockZ))
 	{
 		return;
 	}
@@ -2435,12 +2441,12 @@ void cProtocol180::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
 	{
 		case 0:
 		{
-			m_Client->HandleUseEntity((int)EntityID, false);
+			m_Client->HandleUseEntity(EntityID, false);
 			break;
 		}
 		case 1:
 		{
-			m_Client->HandleUseEntity((int)EntityID, true);
+			m_Client->HandleUseEntity(EntityID, true);
 			break;
 		}
 		case 2:
@@ -2466,8 +2472,8 @@ void cProtocol180::HandlePacketUseEntity(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, WindowID);
-	HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Enchantment);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Enchantment);
 
 	m_Client->HandleEnchantItem(WindowID, Enchantment);
 }
@@ -2478,11 +2484,11 @@ void cProtocol180::HandlePacketEnchantItem(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar,    char,  WindowID);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, SlotNum);
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Button);
-	HANDLE_READ(a_ByteBuffer, ReadBEShort, short, TransactionID);
-	HANDLE_READ(a_ByteBuffer, ReadByte,    Byte,  Mode);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEInt16,  Int16,  SlotNum);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Button);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt16, UInt16, TransactionID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8,  UInt8,  Mode);
 	cItem Item;
 	ReadItem(a_ByteBuffer, Item);
 
@@ -2490,8 +2496,8 @@ void cProtocol180::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 	eClickAction Action;
 	switch ((Mode << 8) | Button)
 	{
-		case 0x0000: Action = (SlotNum != -999) ? caLeftClick  : caLeftClickOutside;  break;
-		case 0x0001: Action = (SlotNum != -999) ? caRightClick : caRightClickOutside; break;
+		case 0x0000: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caLeftClick  : caLeftClickOutside;  break;
+		case 0x0001: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caRightClick : caRightClickOutside; break;
 		case 0x0100: Action = caShiftLeftClick;  break;
 		case 0x0101: Action = caShiftRightClick; break;
 		case 0x0200: Action = caNumber1;         break;
@@ -2504,14 +2510,14 @@ void cProtocol180::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 		case 0x0207: Action = caNumber8;         break;
 		case 0x0208: Action = caNumber9;         break;
 		case 0x0300: Action = caMiddleClick;     break;
-		case 0x0400: Action = (SlotNum == -999) ? caLeftClickOutsideHoldNothing  : caDropKey;     break;
-		case 0x0401: Action = (SlotNum == -999) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break;
-		case 0x0500: Action = (SlotNum == -999) ? caLeftPaintBegin               : caUnknown;     break;
-		case 0x0501: Action = (SlotNum != -999) ? caLeftPaintProgress            : caUnknown;     break;
-		case 0x0502: Action = (SlotNum == -999) ? caLeftPaintEnd                 : caUnknown;     break;
-		case 0x0504: Action = (SlotNum == -999) ? caRightPaintBegin              : caUnknown;     break;
-		case 0x0505: Action = (SlotNum != -999) ? caRightPaintProgress           : caUnknown;     break;
-		case 0x0506: Action = (SlotNum == -999) ? caRightPaintEnd                : caUnknown;     break;
+		case 0x0400: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftClickOutsideHoldNothing  : caDropKey;     break;
+		case 0x0401: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightClickOutsideHoldNothing : caCtrlDropKey; break;
+		case 0x0500: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftPaintBegin               : caUnknown;     break;
+		case 0x0501: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caLeftPaintProgress            : caUnknown;     break;
+		case 0x0502: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caLeftPaintEnd                 : caUnknown;     break;
+		case 0x0504: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightPaintBegin              : caUnknown;     break;
+		case 0x0505: Action = (SlotNum != SLOT_NUM_OUTSIDE) ? caRightPaintProgress           : caUnknown;     break;
+		case 0x0506: Action = (SlotNum == SLOT_NUM_OUTSIDE) ? caRightPaintEnd                : caUnknown;     break;
 		case 0x0600: Action = caDblClick; break;
 		default:
 		{
@@ -2530,7 +2536,7 @@ void cProtocol180::HandlePacketWindowClick(cByteBuffer & a_ByteBuffer)
 
 void cProtocol180::HandlePacketWindowClose(cByteBuffer & a_ByteBuffer)
 {
-	HANDLE_READ(a_ByteBuffer, ReadChar, char, WindowID);
+	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, WindowID);
 	m_Client->HandleWindowClose(WindowID);
 }
 
@@ -2542,14 +2548,14 @@ void cProtocol180::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 {
 	if (a_Channel == "MC|AdvCdm")
 	{
-		HANDLE_READ(a_ByteBuffer, ReadByte, Byte, Mode)
+		HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Mode)
 		switch (Mode)
 		{
 			case 0x00:
 			{
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockX);
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockY);
-				HANDLE_READ(a_ByteBuffer, ReadBEInt, int, BlockZ);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockX);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockY);
+				HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, BlockZ);
 				HANDLE_READ(a_ByteBuffer, ReadVarUTF8String, AString, Command);
 				m_Client->HandleCommandBlockBlockChange(BlockX, BlockY, BlockZ, Command);
 				break;
@@ -2557,7 +2563,7 @@ void cProtocol180::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 
 			default:
 			{
-				m_Client->SendChat(Printf("Failure setting command block command; unhandled mode %d", Mode), mtFailure);
+				m_Client->SendChat(Printf("Failure setting command block command; unhandled mode %u (0x%02x)", Mode, Mode), mtFailure);
 				LOG("Unhandled MC|AdvCdm packet mode.");
 				return;
 			}
@@ -2574,8 +2580,8 @@ void cProtocol180::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	}
 	else if (a_Channel == "MC|Beacon")
 	{
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, Effect1);
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, Effect2);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, Effect1);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, Effect2);
 		m_Client->HandleBeaconSelection(Effect1, Effect2);
 		return;
 	}
@@ -2587,7 +2593,7 @@ void cProtocol180::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, const
 	}
 	else if (a_Channel == "MC|TrSel")
 	{
-		HANDLE_READ(a_ByteBuffer, ReadBEInt, int, SlotNum);
+		HANDLE_READ(a_ByteBuffer, ReadBEInt32, Int32, SlotNum);
 		m_Client->HandleNPCTrade(SlotNum);
 		return;
 	}
@@ -2629,7 +2635,7 @@ void cProtocol180::SendData(const char * a_Data, size_t a_Size)
 
 bool cProtocol180::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_t a_KeepRemainingBytes)
 {
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemType);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt16, Int16, ItemType);
 	if (ItemType == -1)
 	{
 		// The item is empty, no more data follows
@@ -2638,8 +2644,8 @@ bool cProtocol180::ReadItem(cByteBuffer & a_ByteBuffer, cItem & a_Item, size_t a
 	}
 	a_Item.m_ItemType = ItemType;
 	
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadChar,    char,  ItemCount);
-	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEShort, short, ItemDamage);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt8,  Int8,  ItemCount);
+	HANDLE_PACKET_READ(a_ByteBuffer, ReadBEInt16, Int16, ItemDamage);
 	a_Item.m_ItemCount  = ItemCount;
 	a_Item.m_ItemDamage = ItemDamage;
 	if (ItemCount <= 0)
@@ -2755,59 +2761,81 @@ void cProtocol180::StartEncryption(const Byte * a_Key)
 
 
 
+eBlockFace cProtocol180::FaceIntToBlockFace(Int8 a_BlockFace)
+{
+	// Normalize the blockface values returned from the protocol
+	// Anything known gets mapped 1:1, everything else returns BLOCK_FACE_NONE
+	switch (a_BlockFace)
+	{
+		case BLOCK_FACE_XM: return BLOCK_FACE_XM;
+		case BLOCK_FACE_XP: return BLOCK_FACE_XP;
+		case BLOCK_FACE_YM: return BLOCK_FACE_YM;
+		case BLOCK_FACE_YP: return BLOCK_FACE_YP;
+		case BLOCK_FACE_ZM: return BLOCK_FACE_ZM;
+		case BLOCK_FACE_ZP: return BLOCK_FACE_ZP;
+		default: return BLOCK_FACE_NONE;
+	}
+}
+
+
+
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // cProtocol180::cPacketizer:
 
-cProtocol180::cPacketizer::~cPacketizer()
+void cProtocol180::SendPacket(cPacketizer & a_Pkt)
 {
-	UInt32 PacketLen = (UInt32)m_Out.GetUsedSpace();
+	UInt32 PacketLen = static_cast<UInt32>(m_OutPacketBuffer.GetUsedSpace());
 	AString PacketData, CompressedPacket;
-	m_Out.ReadAll(PacketData);
-	m_Out.CommitRead();
+	m_OutPacketBuffer.ReadAll(PacketData);
+	m_OutPacketBuffer.CommitRead();
 
-	if ((m_Protocol.m_State == 3) && (PacketLen >= 256))
+	if ((m_State == 3) && (PacketLen >= 256))
 	{
+		// Compress the packet payload:
 		if (!cProtocol180::CompressPacket(PacketData, CompressedPacket))
 		{
 			return;
 		}
 	}
-	else if (m_Protocol.m_State == 3)
+	else if (m_State == 3)
 	{
-		m_Protocol.m_OutPacketLenBuffer.WriteVarInt(PacketLen + 1);
-		m_Protocol.m_OutPacketLenBuffer.WriteVarInt(0);
-
+		// The packet is not compressed, indicate this in the packet header:
+		m_OutPacketLenBuffer.WriteVarInt32(PacketLen + 1);
+		m_OutPacketLenBuffer.WriteVarInt32(0);
 		AString LengthData;
-		m_Protocol.m_OutPacketLenBuffer.ReadAll(LengthData);
-		m_Protocol.SendData(LengthData.data(), LengthData.size());
+		m_OutPacketLenBuffer.ReadAll(LengthData);
+		SendData(LengthData.data(), LengthData.size());
 	}
 	else
 	{
-		m_Protocol.m_OutPacketLenBuffer.WriteVarInt(PacketLen);
-
+		// Compression doesn't apply to this state, send raw data:
+		m_OutPacketLenBuffer.WriteVarInt32(PacketLen);
 		AString LengthData;
-		m_Protocol.m_OutPacketLenBuffer.ReadAll(LengthData);
-		m_Protocol.SendData(LengthData.data(), LengthData.size());
+		m_OutPacketLenBuffer.ReadAll(LengthData);
+		SendData(LengthData.data(), LengthData.size());
 	}
 
+	// Send the packet's payload, either direct or compressed:
 	if (CompressedPacket.empty())
 	{
-		m_Protocol.m_OutPacketLenBuffer.CommitRead();
-		m_Protocol.SendData(PacketData.data(), PacketData.size());
+		m_OutPacketLenBuffer.CommitRead();
+		SendData(PacketData.data(), PacketData.size());
 	}
 	else
 	{
-		m_Protocol.SendData(CompressedPacket.data(), CompressedPacket.size());
+		SendData(CompressedPacket.data(), CompressedPacket.size());
 	}
 
 	// Log the comm into logfile:
-	if (g_ShouldLogCommOut && m_Protocol.m_CommLogFile.IsOpen())
+	if (g_ShouldLogCommOut && m_CommLogFile.IsOpen())
 	{
 		AString Hex;
 		ASSERT(PacketData.size() > 0);
-		CreateHexDump(Hex, PacketData.data() + 1, PacketData.size() - 1, 16);
-		m_Protocol.m_CommLogFile.Printf("Outgoing packet: type %d (0x%x), length %u (0x%x), state %d. Payload:\n%s\n",
-			PacketData[0], PacketData[0], PacketLen, PacketLen, m_Protocol.m_State, Hex.c_str()
+		CreateHexDump(Hex, PacketData.data(), PacketData.size(), 16);
+		m_CommLogFile.Printf("Outgoing packet: type %d (0x%x), length %u (0x%x), state %d. Payload (incl. type):\n%s\n",
+			a_Pkt.GetPacketType(), a_Pkt.GetPacketType(), PacketLen, PacketLen, m_State, Hex.c_str()
 		);
 	}
 }
@@ -2816,30 +2844,7 @@ cProtocol180::cPacketizer::~cPacketizer()
 
 
 
-void cProtocol180::cPacketizer::WriteUUID(const AString & a_UUID)
-{
-	if (a_UUID.length() != 32)
-	{
-		LOGWARNING("Attempt to send a bad uuid (length isn't 32): %s", a_UUID.c_str());
-		ASSERT(!"Wrong uuid length!");
-		return;
-	}
-	AString UUID_1 = a_UUID.substr(0, 16);
-	AString UUID_2 = a_UUID.substr(16);
-
-	Int64 Value_1, Value_2;
-	sscanf(UUID_1.c_str(), "%llx", &Value_1);
-	sscanf(UUID_2.c_str(), "%llx", &Value_2);
-
-	WriteInt64(Value_1);
-	WriteInt64(Value_2);
-}
-
-
-
-
-
-void cProtocol180::cPacketizer::WriteItem(const cItem & a_Item)
+void cProtocol180::WriteItem(cPacketizer & a_Pkt, const cItem & a_Item)
 {
 	short ItemType = a_Item.m_ItemType;
 	ASSERT(ItemType >= -1);  // Check validity of packets in debug runtime
@@ -2851,17 +2856,17 @@ void cProtocol180::cPacketizer::WriteItem(const cItem & a_Item)
 	
 	if (a_Item.IsEmpty())
 	{
-		WriteShort(-1);
+		a_Pkt.WriteBEInt16(-1);
 		return;
 	}
 	
-	WriteShort(ItemType);
-	WriteByte (a_Item.m_ItemCount);
-	WriteShort(a_Item.m_ItemDamage);
+	a_Pkt.WriteBEInt16(ItemType);
+	a_Pkt.WriteBEInt8(a_Item.m_ItemCount);
+	a_Pkt.WriteBEInt16(a_Item.m_ItemDamage);
 	
 	if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty() && (a_Item.m_ItemType != E_ITEM_FIREWORK_ROCKET) && (a_Item.m_ItemType != E_ITEM_FIREWORK_STAR))
 	{
-		WriteChar(0);
+		a_Pkt.WriteBEInt8(0);
 		return;
 	}
 
@@ -2904,24 +2909,24 @@ void cProtocol180::cPacketizer::WriteItem(const cItem & a_Item)
 	}
 	if ((a_Item.m_ItemType == E_ITEM_FIREWORK_ROCKET) || (a_Item.m_ItemType == E_ITEM_FIREWORK_STAR))
 	{
-		cFireworkItem::WriteToNBTCompound(a_Item.m_FireworkItem, Writer, (ENUM_ITEM_ID)a_Item.m_ItemType);
+		cFireworkItem::WriteToNBTCompound(a_Item.m_FireworkItem, Writer, static_cast<ENUM_ITEM_ID>(a_Item.m_ItemType));
 	}
 	Writer.Finish();
 
 	AString Result = Writer.GetResult();
 	if (Result.size() == 0)
 	{
-		WriteChar(0);
+		a_Pkt.WriteBEInt8(0);
 		return;
 	}
-	WriteBuf(Result.data(), Result.size());
+	a_Pkt.WriteBuf(Result.data(), Result.size());
 }
 
 
 
 
 
-void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEntity)
+void cProtocol180::WriteBlockEntity(cPacketizer & a_Pkt, const cBlockEntity & a_BlockEntity)
 {
 	cFastNBTWriter Writer;
 
@@ -2929,21 +2934,20 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 	{
 		case E_BLOCK_BEACON:
 		{
-			cBeaconEntity & BeaconEntity = (cBeaconEntity &)a_BlockEntity;
-
-			Writer.AddInt("x", BeaconEntity.GetPosX());
-			Writer.AddInt("y", BeaconEntity.GetPosY());
-			Writer.AddInt("z", BeaconEntity.GetPosZ());
-			Writer.AddInt("Primary", BeaconEntity.GetPrimaryEffect());
+			auto & BeaconEntity = reinterpret_cast<const cBeaconEntity &>(a_BlockEntity);
+			Writer.AddInt("x",         BeaconEntity.GetPosX());
+			Writer.AddInt("y",         BeaconEntity.GetPosY());
+			Writer.AddInt("z",         BeaconEntity.GetPosZ());
+			Writer.AddInt("Primary",   BeaconEntity.GetPrimaryEffect());
 			Writer.AddInt("Secondary", BeaconEntity.GetSecondaryEffect());
-			Writer.AddInt("Levels", BeaconEntity.GetBeaconLevel());
+			Writer.AddInt("Levels",    BeaconEntity.GetBeaconLevel());
 			Writer.AddString("id", "Beacon");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_COMMAND_BLOCK:
 		{
-			cCommandBlockEntity & CommandBlockEntity = (cCommandBlockEntity &)a_BlockEntity;
-
+			auto & CommandBlockEntity = reinterpret_cast<const cCommandBlockEntity &>(a_BlockEntity);
 			Writer.AddByte("TrackOutput", 1);  // Neither I nor the MC wiki has any idea about this
 			Writer.AddInt("SuccessCount", CommandBlockEntity.GetResult());
 			Writer.AddInt("x", CommandBlockEntity.GetPosX());
@@ -2955,20 +2959,16 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			// MCS doesn't have this, so just leave it @ '@'. (geddit?)
 			Writer.AddString("CustomName", "@");
 			Writer.AddString("id", "Control");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
-
 			if (!CommandBlockEntity.GetLastOutput().empty())
 			{
-				AString Output;
-				Printf(Output, "{\"text\":\"%s\"}", CommandBlockEntity.GetLastOutput().c_str());
-
-				Writer.AddString("LastOutput", Output.c_str());
+				Writer.AddString("LastOutput", Printf("{\"text\":\"%s\"}", CommandBlockEntity.GetLastOutput().c_str()));
 			}
 			break;
 		}
+
 		case E_BLOCK_HEAD:
 		{
-			cMobHeadEntity & MobHeadEntity = (cMobHeadEntity &)a_BlockEntity;
-
+			auto & MobHeadEntity = reinterpret_cast<const cMobHeadEntity &>(a_BlockEntity);
 			Writer.AddInt("x", MobHeadEntity.GetPosX());
 			Writer.AddInt("y", MobHeadEntity.GetPosY());
 			Writer.AddInt("z", MobHeadEntity.GetPosZ());
@@ -2978,10 +2978,10 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "Skull");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_FLOWER_POT:
 		{
-			cFlowerPotEntity & FlowerPotEntity = (cFlowerPotEntity &)a_BlockEntity;
-
+			auto & FlowerPotEntity = reinterpret_cast<const cFlowerPotEntity &>(a_BlockEntity);
 			Writer.AddInt("x", FlowerPotEntity.GetPosX());
 			Writer.AddInt("y", FlowerPotEntity.GetPosY());
 			Writer.AddInt("z", FlowerPotEntity.GetPosZ());
@@ -2990,10 +2990,10 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "FlowerPot");  // "Tile Entity ID" - MC wiki; vanilla server always seems to send this though
 			break;
 		}
+
 		case E_BLOCK_MOB_SPAWNER:
 		{
-			cMobSpawnerEntity & MobSpawnerEntity = (cMobSpawnerEntity &)a_BlockEntity;
-
+			auto & MobSpawnerEntity = reinterpret_cast<const cMobSpawnerEntity &>(a_BlockEntity);
 			Writer.AddInt("x", MobSpawnerEntity.GetPosX());
 			Writer.AddInt("y", MobSpawnerEntity.GetPosY());
 			Writer.AddInt("z", MobSpawnerEntity.GetPosZ());
@@ -3002,37 +3002,22 @@ void cProtocol180::cPacketizer::WriteBlockEntity(const cBlockEntity & a_BlockEnt
 			Writer.AddString("id", "MobSpawner");
 			break;
 		}
-		default: break;
+
+		default:
+		{
+			break;
+		}
 	}
 
 	Writer.Finish();
-	WriteBuf(Writer.GetResult().data(), Writer.GetResult().size());
-}
-
-
-
-
-
-void cProtocol180::cPacketizer::WriteByteAngle(double a_Angle)
-{
-	WriteByte((char)(255 * a_Angle / 360));
+	a_Pkt.WriteBuf(Writer.GetResult().data(), Writer.GetResult().size());
 }
 
 
 
 
 
-void cProtocol180::cPacketizer::WriteFPInt(double a_Value)
-{
-	int Value = (int)(a_Value * 32);
-	WriteInt(Value);
-}
-
-
-
-
-
-void cProtocol180::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
+void cProtocol180::WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity)
 {
 	// Common metadata:
 	Byte Flags = 0;
@@ -3056,21 +3041,21 @@ void cProtocol180::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 	{
 		Flags |= 0x20;
 	}
-	WriteByte(0);  // Byte(0) + index 0
-	WriteByte(Flags);
+	a_Pkt.WriteBEUInt8(0);  // Byte(0) + index 0
+	a_Pkt.WriteBEUInt8(Flags);
 	
 	switch (a_Entity.GetEntityType())
 	{
 		case cEntity::etPlayer: break;  // TODO?
 		case cEntity::etPickup:
 		{
-			WriteByte((5 << 5) | 10);  // Slot(5) + index 10
-			WriteItem(((const cPickup &)a_Entity).GetItem());
+			a_Pkt.WriteBEUInt8((5 << 5) | 10);  // Slot(5) + index 10
+			WriteItem(a_Pkt, reinterpret_cast<const cPickup &>(a_Entity).GetItem());
 			break;
 		}
 		case cEntity::etMinecart:
 		{
-			WriteByte(0x51);
+			a_Pkt.WriteBEUInt8(0x51);
 
 			// The following expression makes Minecarts shake more with less health or higher damage taken
 			// It gets half the maximum health, and takes it away from the current health minus the half health:
@@ -3079,71 +3064,82 @@ void cProtocol180::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 			Health: 3 | 3 - (3 - 3) = 3
 			Health: 1 | 3 - (1 - 3) = 5
 			*/
-			WriteInt((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * ((const cMinecart &)a_Entity).LastDamage()) * 4);
-			WriteByte(0x52);
-			WriteInt(1);  // Shaking direction, doesn't seem to affect anything
-			WriteByte(0x73);
-			WriteFloat((float)(((const cMinecart &)a_Entity).LastDamage() + 10));  // Damage taken / shake effect multiplyer
+			auto & Minecart = reinterpret_cast<const cMinecart &>(a_Entity);
+			a_Pkt.WriteBEInt32((((a_Entity.GetMaxHealth() / 2) - (a_Entity.GetHealth() - (a_Entity.GetMaxHealth() / 2))) * Minecart.LastDamage()) * 4);
+			a_Pkt.WriteBEUInt8(0x52);
+			a_Pkt.WriteBEInt32(1);  // Shaking direction, doesn't seem to affect anything
+			a_Pkt.WriteBEUInt8(0x73);
+			a_Pkt.WriteBEFloat(static_cast<float>(Minecart.LastDamage() + 10));  // Damage taken / shake effect multiplyer
 			
-			if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpNone)
+			if (Minecart.GetPayload() == cMinecart::mpNone)
 			{
-				cRideableMinecart & RideableMinecart = ((cRideableMinecart &)a_Entity);
+				auto & RideableMinecart = reinterpret_cast<const cRideableMinecart &>(Minecart);
 				const cItem & MinecartContent = RideableMinecart.GetContent();
 				if (!MinecartContent.IsEmpty())
 				{
-					WriteByte(0x54);
+					a_Pkt.WriteBEUInt8(0x54);
 					int Content = MinecartContent.m_ItemType;
 					Content |= MinecartContent.m_ItemDamage << 8;
-					WriteInt(Content);
-					WriteByte(0x55);
-					WriteInt(RideableMinecart.GetBlockHeight());
-					WriteByte(0x56);
-					WriteByte(1);
+					a_Pkt.WriteBEInt32(Content);
+					a_Pkt.WriteBEUInt8(0x55);
+					a_Pkt.WriteBEInt32(RideableMinecart.GetBlockHeight());
+					a_Pkt.WriteBEUInt8(0x56);
+					a_Pkt.WriteBEUInt8(1);
 				}
 			}
-			else if (((cMinecart &)a_Entity).GetPayload() == cMinecart::mpFurnace)
+			else if (Minecart.GetPayload() == cMinecart::mpFurnace)
 			{
-				WriteByte(0x10);
-				WriteByte(((const cMinecartWithFurnace &)a_Entity).IsFueled() ? 1 : 0);
+				a_Pkt.WriteBEUInt8(0x10);
+				a_Pkt.WriteBEUInt8(reinterpret_cast<const cMinecartWithFurnace &>(Minecart).IsFueled() ? 1 : 0);
 			}
 			break;
-		}
+		}  // case etMinecart
+
 		case cEntity::etProjectile:
 		{
-			cProjectileEntity & Projectile = (cProjectileEntity &)a_Entity;
+			auto & Projectile = reinterpret_cast<const cProjectileEntity &>(a_Entity);
 			switch (Projectile.GetProjectileKind())
 			{
 				case cProjectileEntity::pkArrow:
 				{
-					WriteByte(0x10);
-					WriteByte(((const cArrowEntity &)a_Entity).IsCritical() ? 1 : 0);
+					a_Pkt.WriteBEUInt8(0x10);
+					a_Pkt.WriteBEUInt8(reinterpret_cast<const cArrowEntity &>(Projectile).IsCritical() ? 1 : 0);
 					break;
 				}
 				case cProjectileEntity::pkFirework:
 				{
-					WriteByte(0xA8);
-					WriteItem(((const cFireworkEntity &)a_Entity).GetItem());
+					a_Pkt.WriteBEUInt8(0xa8);
+					WriteItem(a_Pkt, reinterpret_cast<const cFireworkEntity &>(Projectile).GetItem());
+					break;
+				}
+				default:
+				{
 					break;
 				}
-				default: break;
 			}
 			break;
-		}
+		}  // case etProjectile
+
 		case cEntity::etMonster:
 		{
-			WriteMobMetadata((const cMonster &)a_Entity);
+			WriteMobMetadata(a_Pkt, reinterpret_cast<const cMonster &>(a_Entity));
 			break;
 		}
+
 		case cEntity::etItemFrame:
 		{
-			cItemFrame & Frame = (cItemFrame &)a_Entity;
-			WriteByte(0xA8);
-			WriteItem(Frame.GetItem());
-			WriteByte(0x09);
-			WriteByte(Frame.GetItemRotation());
+			auto & Frame = reinterpret_cast<const cItemFrame &>(a_Entity);
+			a_Pkt.WriteBEUInt8(0xa8);
+			WriteItem(a_Pkt, Frame.GetItem());
+			a_Pkt.WriteBEUInt8(0x09);
+			a_Pkt.WriteBEUInt8(Frame.GetItemRotation());
+			break;
+		}  // case etItemFrame
+
+		default:
+		{
 			break;
 		}
-		default: break;
 	}
 }
 
@@ -3151,192 +3147,205 @@ void cProtocol180::cPacketizer::WriteEntityMetadata(const cEntity & a_Entity)
 
 
 
-void cProtocol180::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
+void cProtocol180::WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob)
 {
 	switch (a_Mob.GetMobType())
 	{
-		case mtCreeper:
-		{
-			WriteByte(0x10);
-			WriteByte(((const cCreeper &)a_Mob).IsBlowing() ? 1 : -1);
-			WriteByte(0x11);
-			WriteByte(((const cCreeper &)a_Mob).IsCharged() ? 1 : 0);
-			break;
-		}
-		
 		case mtBat:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cBat &)a_Mob).IsHanging() ? 1 : 0);
-			break;
-		}
-		
-		case mtPig:
-		{
-			WriteByte(0x10);
-			WriteByte(((const cPig &)a_Mob).IsSaddled() ? 1 : 0);
+			auto & Bat = reinterpret_cast<const cBat &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(Bat.IsHanging() ? 1 : 0);
 			break;
-		}
+		}  // case mtBat
 		
-		case mtVillager:
+		case mtCreeper:
 		{
-			WriteByte(0x50);
-			WriteInt(((const cVillager &)a_Mob).GetVilType());
+			auto & Creeper = reinterpret_cast<const cCreeper &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(Creeper.IsBlowing() ? 1 : -1);
+			a_Pkt.WriteBEUInt8(0x11);
+			a_Pkt.WriteBEUInt8(Creeper.IsCharged() ? 1 : 0);
 			break;
-		}
+		}  // case mtCreeper
 		
-		case mtZombie:
+		case mtEnderman:
 		{
-			WriteByte(0x0c);
-			WriteByte(((const cZombie &)a_Mob).IsBaby() ? 1 : 0);
-			WriteByte(0x0d);
-			WriteByte(((const cZombie &)a_Mob).IsVillagerZombie() ? 1 : 0);
-			WriteByte(0x0e);
-			WriteByte(((const cZombie &)a_Mob).IsConverting() ? 1 : 0);
+			auto & Enderman = reinterpret_cast<const cEnderman &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x30);
+			a_Pkt.WriteBEInt16(static_cast<Byte>(Enderman.GetCarriedBlock()));
+			a_Pkt.WriteBEUInt8(0x11);
+			a_Pkt.WriteBEUInt8(static_cast<Byte>(Enderman.GetCarriedMeta()));
+			a_Pkt.WriteBEUInt8(0x12);
+			a_Pkt.WriteBEUInt8(Enderman.IsScreaming() ? 1 : 0);
 			break;
-		}
+		}  // case mtEnderman
 		
 		case mtGhast:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cGhast &)a_Mob).IsCharging());
+			auto & Ghast = reinterpret_cast<const cGhast &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(Ghast.IsCharging());
 			break;
-		}
+		}  // case mtGhast
 		
-		case mtWolf:
+		case mtHorse:
 		{
-			const cWolf & Wolf = (const cWolf &)a_Mob;
-			Byte WolfStatus = 0;
-			if (Wolf.IsSitting())
+			auto & Horse = reinterpret_cast<const cHorse &>(a_Mob);
+			int Flags = 0;
+			if (Horse.IsTame())
 			{
-				WolfStatus |= 0x1;
+				Flags |= 0x02;
 			}
-			if (Wolf.IsAngry())
+			if (Horse.IsSaddled())
 			{
-				WolfStatus |= 0x2;
+				Flags |= 0x04;
 			}
-			if (Wolf.IsTame())
+			if (Horse.IsChested())
 			{
-				WolfStatus |= 0x4;
+				Flags |= 0x08;
+			}
+			if (Horse.IsBaby())
+			{
+				Flags |= 0x10;
 			}
-			WriteByte(0x10);
-			WriteByte(WolfStatus);
-
-			WriteByte(0x72);
-			WriteFloat((float)(a_Mob.GetHealth()));
-			WriteByte(0x13);
-			WriteByte(Wolf.IsBegging() ? 1 : 0);
-			WriteByte(0x14);
-			WriteByte(Wolf.GetCollarColor());
+			if (Horse.IsEating())
+			{
+				Flags |= 0x20;
+			}
+			if (Horse.IsRearing())
+			{
+				Flags |= 0x40;
+			}
+			if (Horse.IsMthOpen())
+			{
+				Flags |= 0x80;
+			}
+			a_Pkt.WriteBEUInt8(0x50);  // Int at index 16
+			a_Pkt.WriteBEInt32(Flags);
+			a_Pkt.WriteBEUInt8(0x13);  // Byte at index 19
+			a_Pkt.WriteBEUInt8(Horse.GetHorseType());
+			a_Pkt.WriteBEUInt8(0x54);  // Int at index 20
+			int Appearance = 0;
+			Appearance = Horse.GetHorseColor();
+			Appearance |= Horse.GetHorseStyle() << 8;
+			a_Pkt.WriteBEInt32(Appearance);
+			a_Pkt.WriteBEUInt8(0x56);  // Int at index 22
+			a_Pkt.WriteBEInt32(Horse.GetHorseArmour());
 			break;
-		}
+		}  // case mtHorse
+
+		case mtMagmaCube:
+		{
+			auto & MagmaCube = reinterpret_cast<const cMagmaCube &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(MagmaCube.GetSize());
+			break;
+		}  // case mtMagmaCube
+
+		case mtPig:
+		{
+			auto & Pig = reinterpret_cast<const cPig &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(Pig.IsSaddled() ? 1 : 0);
+			break;
+		}  // case mtPig
 		
 		case mtSheep:
 		{
-			WriteByte(0x10);
+			auto & Sheep = reinterpret_cast<const cSheep &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
 			Byte SheepMetadata = 0;
-			SheepMetadata = ((const cSheep &)a_Mob).GetFurColor();
-			if (((const cSheep &)a_Mob).IsSheared())
+			SheepMetadata = Sheep.GetFurColor();
+			if (Sheep.IsSheared())
 			{
 				SheepMetadata |= 0x10;
 			}
-			WriteByte(SheepMetadata);
-			break;
-		}
-		
-		case mtEnderman:
-		{
-			WriteByte(0x30);
-			WriteShort((Byte)(((const cEnderman &)a_Mob).GetCarriedBlock()));
-			WriteByte(0x11);
-			WriteByte((Byte)(((const cEnderman &)a_Mob).GetCarriedMeta()));
-			WriteByte(0x12);
-			WriteByte(((const cEnderman &)a_Mob).IsScreaming() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(SheepMetadata);
 			break;
-		}
+		}  // case mtSheep
 		
 		case mtSkeleton:
 		{
-			WriteByte(0x0d);
-			WriteByte(((const cSkeleton &)a_Mob).IsWither() ? 1 : 0);
+			auto & Skeleton = reinterpret_cast<const cSkeleton &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x0d);
+			a_Pkt.WriteBEUInt8(Skeleton.IsWither() ? 1 : 0);
 			break;
-		}
+		}  // case mtSkeleton
 		
-		case mtWitch:
+		case mtSlime:
 		{
-			WriteByte(0x15);
-			WriteByte(((const cWitch &)a_Mob).IsAngry() ? 1 : 0);
+			auto & Slime = reinterpret_cast<const cSlime &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(Slime.GetSize());
 			break;
-		}
+		}  // case mtSlime
 
-		case mtWither:
+		case mtVillager:
 		{
-			WriteByte(0x54);  // Int at index 20
-			WriteInt(((const cWither &)a_Mob).GetWitherInvulnerableTicks());
-			WriteByte(0x66);  // Float at index 6
-			WriteFloat((float)(a_Mob.GetHealth()));
+			auto & Villager = reinterpret_cast<const cVillager &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x50);
+			a_Pkt.WriteBEInt32(Villager.GetVilType());
 			break;
-		}
+		}  // case mtVillager
 		
-		case mtSlime:
+		case mtWitch:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cSlime &)a_Mob).GetSize());
+			auto & Witch = reinterpret_cast<const cWitch &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x15);
+			a_Pkt.WriteBEUInt8(Witch.IsAngry() ? 1 : 0);
 			break;
-		}
-		
-		case mtMagmaCube:
+		}  // case mtWitch
+
+		case mtWither:
 		{
-			WriteByte(0x10);
-			WriteByte(((const cMagmaCube &)a_Mob).GetSize());
+			auto & Wither = reinterpret_cast<const cWither &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x54);  // Int at index 20
+			a_Pkt.WriteBEInt32(Wither.GetWitherInvulnerableTicks());
+			a_Pkt.WriteBEUInt8(0x66);  // Float at index 6
+			a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));
 			break;
-		}
+		}  // case mtWither
 		
-		case mtHorse:
+		case mtWolf:
 		{
-			const cHorse & Horse = (const cHorse &)a_Mob;
-			int Flags = 0;
-			if (Horse.IsTame())
-			{
-				Flags |= 0x02;
-			}
-			if (Horse.IsSaddled())
-			{
-				Flags |= 0x04;
-			}
-			if (Horse.IsChested())
-			{
-				Flags |= 0x08;
-			}
-			if (Horse.IsBaby())
-			{
-				Flags |= 0x10;
-			}
-			if (Horse.IsEating())
+			auto & Wolf = reinterpret_cast<const cWolf &>(a_Mob);
+			Byte WolfStatus = 0;
+			if (Wolf.IsSitting())
 			{
-				Flags |= 0x20;
+				WolfStatus |= 0x1;
 			}
-			if (Horse.IsRearing())
+			if (Wolf.IsAngry())
 			{
-				Flags |= 0x40;
+				WolfStatus |= 0x2;
 			}
-			if (Horse.IsMthOpen())
+			if (Wolf.IsTame())
 			{
-				Flags |= 0x80;
+				WolfStatus |= 0x4;
 			}
-			WriteByte(0x50);  // Int at index 16
-			WriteInt(Flags);
-			WriteByte(0x13);  // Byte at index 19
-			WriteByte(Horse.GetHorseType());
-			WriteByte(0x54);  // Int at index 20
-			int Appearance = 0;
-			Appearance = Horse.GetHorseColor();
-			Appearance |= Horse.GetHorseStyle() << 8;
-			WriteInt(Appearance);
-			WriteByte(0x56);  // Int at index 22
-			WriteInt(Horse.GetHorseArmour());
+			a_Pkt.WriteBEUInt8(0x10);
+			a_Pkt.WriteBEUInt8(WolfStatus);
+
+			a_Pkt.WriteBEUInt8(0x72);
+			a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));
+			a_Pkt.WriteBEUInt8(0x13);
+			a_Pkt.WriteBEUInt8(Wolf.IsBegging() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x14);
+			a_Pkt.WriteBEUInt8(Wolf.GetCollarColor());
 			break;
-		}
+		}  // case mtWolf
+		
+		case mtZombie:
+		{
+			auto & Zombie = reinterpret_cast<const cZombie &>(a_Mob);
+			a_Pkt.WriteBEUInt8(0x0c);
+			a_Pkt.WriteBEUInt8(Zombie.IsBaby() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x0d);
+			a_Pkt.WriteBEUInt8(Zombie.IsVillagerZombie() ? 1 : 0);
+			a_Pkt.WriteBEUInt8(0x0e);
+			a_Pkt.WriteBEUInt8(Zombie.IsConverting() ? 1 : 0);
+			break;
+		}  // case mtZombie
 	}  // switch (a_Mob.GetType())
 }
 
@@ -3344,12 +3353,12 @@ void cProtocol180::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 
 
 
-void cProtocol180::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
+void cProtocol180::WriteEntityProperties(cPacketizer & a_Pkt, const cEntity & a_Entity)
 {
 	if (!a_Entity.IsMob())
 	{
 		// No properties for anything else than mobs
-		WriteInt(0);
+		a_Pkt.WriteBEInt32(0);
 		return;
 	}
 
@@ -3357,7 +3366,7 @@ void cProtocol180::cPacketizer::WriteEntityProperties(const cEntity & a_Entity)
 
 	// TODO: Send properties and modifiers based on the mob type
 	
-	WriteInt(0);  // NumProperties
+	a_Pkt.WriteBEInt32(0);  // NumProperties
 }
 
 
diff --git a/src/Protocol/Protocol18x.h b/src/Protocol/Protocol18x.h
index 92d9825ef..9aa5ed827 100644
--- a/src/Protocol/Protocol18x.h
+++ b/src/Protocol/Protocol18x.h
@@ -62,7 +62,7 @@ public:
 	/** Sending stuff to clients (alphabetically sorted): */
 	virtual void SendAttachEntity               (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
 	virtual void SendBlockAction                (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
-	virtual void SendBlockBreakAnim	            (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockBreakAnim	            (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
 	virtual void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
 	virtual void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
 	virtual void SendChat                       (const AString & a_Message) override;
@@ -150,96 +150,6 @@ public:
 
 protected:
 
-	/** Composes individual packets in the protocol's m_OutPacketBuffer; sends them upon being destructed */
-	class cPacketizer
-	{
-	public:
-		cPacketizer(cProtocol180 & a_Protocol, UInt32 a_PacketType) :
-			m_Protocol(a_Protocol),
-			m_Out(a_Protocol.m_OutPacketBuffer),
-			m_Lock(a_Protocol.m_CSPacket)
-		{
-			m_Out.WriteVarInt(a_PacketType);
-		}
-		
-		~cPacketizer();
-
-		void WriteBool(bool a_Value)
-		{
-			m_Out.WriteBool(a_Value);
-		}
-		
-		void WriteByte(Byte a_Value)
-		{
-			m_Out.WriteByte(a_Value);
-		}
-		
-		void WriteChar(char a_Value)
-		{
-			m_Out.WriteChar(a_Value);
-		}
-		
-		void WriteShort(short a_Value)
-		{
-			m_Out.WriteBEShort(a_Value);
-		}
-		
-		void WriteInt(int a_Value)
-		{
-			m_Out.WriteBEInt(a_Value);
-		}
-		
-		void WriteInt64(Int64 a_Value)
-		{
-			m_Out.WriteBEInt64(a_Value);
-		}
-		
-		void WriteFloat(float a_Value)
-		{
-			m_Out.WriteBEFloat(a_Value);
-		}
-		
-		void WriteDouble(double a_Value)
-		{
-			m_Out.WriteBEDouble(a_Value);
-		}
-		
-		void WriteVarInt(UInt32 a_Value)
-		{
-			m_Out.WriteVarInt(a_Value);
-		}
-		
-		void WriteString(const AString & a_Value)
-		{
-			m_Out.WriteVarUTF8String(a_Value);
-		}
-
-		void WritePosition(int a_BlockX, int a_BlockY, int a_BlockZ)
-		{
-			m_Out.WritePosition(a_BlockX, a_BlockY, a_BlockZ);
-		}
-		
-		void WriteUUID(const AString & a_UUID);
-		
-		void WriteBuf(const char * a_Data, size_t a_Size)
-		{
-			m_Out.Write(a_Data, a_Size);
-		}
-		
-		void WriteItem(const cItem & a_Item);
-		void WriteByteAngle(double a_Angle);  // Writes the specified angle using a single byte
-		void WriteFPInt(double a_Value);  // Writes the double value as a 27:5 fixed-point integer
-		void WriteEntityMetadata(const cEntity & a_Entity);  // Writes the metadata for the specified entity, not including the terminating 0x7f
-		void WriteMobMetadata(const cMonster & a_Mob);  // Writes the mob-specific metadata for the specified mob
-		void WriteEntityProperties(const cEntity & a_Entity);  // Writes the entity properties for the specified entity, including the Count field
-		void WriteBlockEntity(const cBlockEntity & a_BlockEntity);
-		
-	protected:
-		cProtocol180 & m_Protocol;
-		cByteBuffer & m_Out;
-		cCSLock m_Lock;
-	} ;
-
 	AString m_ServerAddress;
 	
 	UInt16 m_ServerPort;
@@ -252,12 +162,6 @@ protected:
 	/** Buffer for the received data */
 	cByteBuffer m_ReceivedData;
 	
-	/** Buffer for composing the outgoing packets, through cPacketizer */
-	cByteBuffer m_OutPacketBuffer;
-	
-	/** Buffer for composing packet length (so that each cPacketizer instance doesn't allocate a new cPacketBuffer) */
-	cByteBuffer m_OutPacketLenBuffer;
-	
 	bool m_IsEncrypted;
 	
 	cAesCfb128Decryptor m_Decryptor;
@@ -320,6 +224,9 @@ protected:
 	/** Sends the data to the client, encrypting them if needed. */
 	virtual void SendData(const char * a_Data, size_t a_Size) override;
 
+	/** Sends the packet to the client. Called by the cPacketizer's destructor. */
+	virtual void SendPacket(cPacketizer & a_Packet) override;
+
 	void SendCompass(const cWorld & a_World);
 	
 	/** Reads an item out of the received data, sets a_Item to the values read.
@@ -332,6 +239,24 @@ protected:
 	
 	void StartEncryption(const Byte * a_Key);
 
+	/** Converts the BlockFace received by the protocol into eBlockFace constants.
+	If the received value doesn't match any of our eBlockFace constants, BLOCK_FACE_NONE is returned. */
+	eBlockFace FaceIntToBlockFace(Int8 a_FaceInt);
+
+	/** Writes the item data into a packet. */
+	void WriteItem(cPacketizer & a_Pkt, const cItem & a_Item);
+
+	/** Writes the metadata for the specified entity, not including the terminating 0x7f. */
+	void WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity);
+
+	/** Writes the mob-specific metadata for the specified mob */
+	void WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob);
+
+	/** Writes the entity properties for the specified entity, including the Count field. */
+	void WriteEntityProperties(cPacketizer & a_Pkt, const cEntity & a_Entity);
+
+	/** Writes the block entity data for the specified block entity into the packet. */
+	void WriteBlockEntity(cPacketizer & a_Pkt, const cBlockEntity & a_BlockEntity);
 } ;
 
 
diff --git a/src/Protocol/ProtocolRecognizer.cpp b/src/Protocol/ProtocolRecognizer.cpp
index af9e0d1bc..36f8bc791 100644
--- a/src/Protocol/ProtocolRecognizer.cpp
+++ b/src/Protocol/ProtocolRecognizer.cpp
@@ -108,10 +108,10 @@ void cProtocolRecognizer::SendBlockAction(int a_BlockX, int a_BlockY, int a_Bloc
 
 
 
-void cProtocolRecognizer::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY, int a_BlockZ, char stage)
+void cProtocolRecognizer::SendBlockBreakAnim(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage)
 {
 	ASSERT(m_Protocol != nullptr);
-	m_Protocol->SendBlockBreakAnim(a_entityID, a_BlockX, a_BlockY, a_BlockZ, stage);
+	m_Protocol->SendBlockBreakAnim(a_EntityID, a_BlockX, a_BlockY, a_BlockZ, a_Stage);
 }
 
 
@@ -911,13 +911,13 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 		case PROTO_VERSION_1_7_2:
 		{
 			AString ServerAddress;
-			short ServerPort;
+			UInt16 ServerPort;
 			UInt32 NextState;
 			if (!m_Buffer.ReadVarUTF8String(ServerAddress))
 			{
 				break;
 			}
-			if (!m_Buffer.ReadBEShort(ServerPort))
+			if (!m_Buffer.ReadBEUInt16(ServerPort))
 			{
 				break;
 			}
@@ -926,19 +926,19 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 				break;
 			}
 			m_Buffer.CommitRead();
-			m_Protocol = new cProtocol172(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
+			m_Protocol = new cProtocol172(m_Client, ServerAddress, ServerPort, NextState);
 			return true;
 		}
 		case PROTO_VERSION_1_7_6:
 		{
 			AString ServerAddress;
-			short ServerPort;
+			UInt16 ServerPort;
 			UInt32 NextState;
 			if (!m_Buffer.ReadVarUTF8String(ServerAddress))
 			{
 				break;
 			}
-			if (!m_Buffer.ReadBEShort(ServerPort))
+			if (!m_Buffer.ReadBEUInt16(ServerPort))
 			{
 				break;
 			}
@@ -947,19 +947,19 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 				break;
 			}
 			m_Buffer.CommitRead();
-			m_Protocol = new cProtocol176(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
+			m_Protocol = new cProtocol176(m_Client, ServerAddress, ServerPort, NextState);
 			return true;
 		}
 		case PROTO_VERSION_1_8_0:
 		{
 			AString ServerAddress;
-			short ServerPort;
+			UInt16 ServerPort;
 			UInt32 NextState;
 			if (!m_Buffer.ReadVarUTF8String(ServerAddress))
 			{
 				break;
 			}
-			if (!m_Buffer.ReadBEShort(ServerPort))
+			if (!m_Buffer.ReadBEUInt16(ServerPort))
 			{
 				break;
 			}
@@ -968,12 +968,12 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 				break;
 			}
 			m_Buffer.CommitRead();
-			m_Protocol = new cProtocol180(m_Client, ServerAddress, (UInt16)ServerPort, NextState);
+			m_Protocol = new cProtocol180(m_Client, ServerAddress, ServerPort, NextState);
 			return true;
 		}
 	}
-	LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u)",
-		m_Client->GetIPString().c_str(), ProtocolVersion
+	LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u (0x%x))",
+		m_Client->GetIPString().c_str(), ProtocolVersion, ProtocolVersion
 	);
 	m_Client->Kick("Unsupported protocol version");
 	return false;
@@ -982,3 +982,15 @@ bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRema
 
 
 
+void cProtocolRecognizer::SendPacket(cPacketizer & a_Pkt)
+{
+	// This function should never be called - it needs to exists so that cProtocolRecognizer can be instantiated,
+	// but the actual sending is done by the internal m_Protocol itself.
+	LOGWARNING("%s: This function shouldn't ever be called.", __FUNCTION__);
+	ASSERT(!"Function not to be called");
+}
+
+
+
+
+
diff --git a/src/Protocol/ProtocolRecognizer.h b/src/Protocol/ProtocolRecognizer.h
index dcf653e75..d46d31cb1 100644
--- a/src/Protocol/ProtocolRecognizer.h
+++ b/src/Protocol/ProtocolRecognizer.h
@@ -50,7 +50,7 @@ public:
 	/// Sending stuff to clients (alphabetically sorted):
 	virtual void SendAttachEntity               (const cEntity & a_Entity, const cEntity * a_Vehicle) override;
 	virtual void SendBlockAction                (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType) override;
-	virtual void SendBlockBreakAnim             (int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
+	virtual void SendBlockBreakAnim             (UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage) override;
 	virtual void SendBlockChange                (int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta) override;
 	virtual void SendBlockChanges               (int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes) override;
 	virtual void SendChat                       (const AString & a_Message) override;
@@ -136,9 +136,12 @@ protected:
 	
 	/** Tries to recognize a protocol in the lengthed family (1.7+), based on m_Buffer; returns true if recognized.
 	The packet length and type have already been read, type is 0
-	The number of bytes remaining in the packet is passed as a_PacketLengthRemaining
-	**/
+	The number of bytes remaining in the packet is passed as a_PacketLengthRemaining. **/
 	bool TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining);
+
+	/** Sends a single packet contained within the cPacketizer class.
+	The cPacketizer's destructor calls this to send the contained packet; protocol may transform the data (compression in 1.8 etc). */
+	virtual void SendPacket(cPacketizer & a_Pkt) override;
 } ;
 
 
diff --git a/src/UI/SlotArea.h b/src/UI/SlotArea.h
index e39d372c9..0e7ba2a50 100644
--- a/src/UI/SlotArea.h
+++ b/src/UI/SlotArea.h
@@ -248,28 +248,31 @@ public:
 
 
 protected:
-	/// Maps player's EntityID -> current recipe; not a std::map because cCraftingGrid needs proper constructor params
-	typedef std::list<std::pair<int, cCraftingRecipe> > cRecipeMap;
+	/** Maps player's EntityID -> current recipe.
+	Not a std::map because cCraftingGrid needs proper constructor params. */
+	typedef std::list<std::pair<UInt32, cCraftingRecipe> > cRecipeMap;
 	
 	int        m_GridSize;
 	cRecipeMap m_Recipes;
 	
-	/// Handles a click in the result slot. Crafts using the current recipe, if possible
+	/** Handles a click in the result slot.
+	Crafts using the current recipe, if possible. */
 	void ClickedResult(cPlayer & a_Player);
 	
-	/// Handles a shift-click in the result slot. Crafts using the current recipe until it changes or no more space for result.
+	/** Handles a shift-click in the result slot.
+	Crafts using the current recipe until it changes or no more space for result. */
 	void ShiftClickedResult(cPlayer & a_Player);
 
 	/** Handles a drop-click in the result slot. */
 	void DropClickedResult(cPlayer & a_Player);
 
-	/// Updates the current recipe and result slot based on the ingredients currently in the crafting grid of the specified player
+	/** Updates the current recipe and result slot based on the ingredients currently in the crafting grid of the specified player. */
 	void UpdateRecipe(cPlayer & a_Player);
 	
-	/// Retrieves the recipe for the specified player from the map, or creates one if not found
+	/** Retrieves the recipe for the specified player from the map, or creates one if not found. */
 	cCraftingRecipe & GetRecipeForPlayer(cPlayer & a_Player);
 
-	/// Called after an item has been crafted to handle statistics e.t.c.
+	/** Called after an item has been crafted to handle statistics e.t.c. */
 	void HandleCraftItem(const cItem & a_Result, cPlayer & a_Player);
 } ;
 
diff --git a/src/World.cpp b/src/World.cpp
index 7d63a8a52..4480013c3 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -1920,7 +1920,7 @@ void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double
 
 
 
-int cWorld::SpawnFallingBlock(int a_X, int a_Y, int a_Z, BLOCKTYPE BlockType, NIBBLETYPE BlockMeta)
+UInt32 cWorld::SpawnFallingBlock(int a_X, int a_Y, int a_Z, BLOCKTYPE BlockType, NIBBLETYPE BlockMeta)
 {
 	cFallingBlock * FallingBlock = new cFallingBlock(Vector3i(a_X, a_Y, a_Z), BlockType, BlockMeta);
 	FallingBlock->Initialize(*this);
@@ -1931,11 +1931,12 @@ int cWorld::SpawnFallingBlock(int a_X, int a_Y, int a_Z, BLOCKTYPE BlockType, NI
 
 
 
-int cWorld::SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward)
+UInt32 cWorld::SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward)
 {
 	if (a_Reward < 1)
 	{
-		return -1;
+		LOGWARNING("%s: Attempting to create an experience orb with non-positive reward!", __FUNCTION__);
+		return cEntity::INVALID_ID;
 	}
 
 	cExpOrb * ExpOrb = new cExpOrb(a_X, a_Y, a_Z, a_Reward);
@@ -1947,7 +1948,7 @@ int cWorld::SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward)
 
 
 
-int cWorld::SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType, const cItem & a_Content, int a_BlockHeight)
+UInt32 cWorld::SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType, const cItem & a_Content, int a_BlockHeight)
 {
 	cMinecart * Minecart;
 	switch (a_MinecartType)
@@ -1959,7 +1960,7 @@ int cWorld::SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType
 		case E_ITEM_MINECART_WITH_HOPPER: Minecart = new cMinecartWithHopper   (a_X, a_Y, a_Z); break;
 		default:
 		{
-			return -1;
+			return cEntity::INVALID_ID;
 		}
 	}  // switch (a_MinecartType)
 	Minecart->Initialize(*this);
@@ -1970,7 +1971,7 @@ int cWorld::SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType
 
 
 
-void cWorld::SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTicks, double a_InitialVelocityCoeff)
+UInt32 cWorld::SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTicks, double a_InitialVelocityCoeff)
 {
 	cTNTEntity * TNT = new cTNTEntity(a_X, a_Y, a_Z, a_FuseTicks);
 	TNT->Initialize(*this);
@@ -1979,6 +1980,7 @@ void cWorld::SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTicks,
 		a_InitialVelocityCoeff * 2,
 		a_InitialVelocityCoeff * (GetTickRandomNumber(2) - 1)
 	);
+	return TNT->GetUniqueID();
 }
 
 
@@ -2069,7 +2071,7 @@ void cWorld::BroadcastBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char
 
 
 
-void cWorld::BroadcastBlockBreakAnimation(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude)
+void cWorld::BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude)
 {
 	m_ChunkMap->BroadcastBlockBreakAnimation(a_EntityID, a_BlockX, a_BlockY, a_BlockZ, a_Stage, a_Exclude);
 }
@@ -2906,7 +2908,7 @@ bool cWorld::ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback & a_
 
 
 
-bool cWorld::DoWithEntityByID(int a_UniqueID, cEntityCallback & a_Callback)
+bool cWorld::DoWithEntityByID(UInt32 a_UniqueID, cEntityCallback & a_Callback)
 {
 	// First check the entities-to-add:
 	{
@@ -3215,7 +3217,7 @@ void cWorld::AddEntity(cEntity * a_Entity)
 
 
 
-bool cWorld::HasEntity(int a_UniqueID)
+bool cWorld::HasEntity(UInt32 a_UniqueID)
 {
 	// Check if the entity is in the queue to be added to the world:
 	{
@@ -3332,15 +3334,16 @@ bool cWorld::IsBlockDirectlyWatered(int a_BlockX, int a_BlockY, int a_BlockZ)
 
 
 
-int cWorld::SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType)
+UInt32 cWorld::SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType)
 {
 	cMonster * Monster = nullptr;
 
 	Monster = cMonster::NewMonsterFromType(a_MonsterType);
-	if (Monster != nullptr)
+	if (Monster == nullptr)
 	{
-		Monster->SetPosition(a_PosX, a_PosY, a_PosZ);
+		return cEntity::INVALID_ID;
 	}
+	Monster->SetPosition(a_PosX, a_PosY, a_PosZ);
 	
 	return SpawnMobFinalize(Monster);
 }
@@ -3348,13 +3351,9 @@ int cWorld::SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a
 
 
 
-int cWorld::SpawnMobFinalize(cMonster * a_Monster)
+UInt32 cWorld::SpawnMobFinalize(cMonster * a_Monster)
 {
-	// Invalid cMonster object. Bail out.
-	if (!a_Monster)
-	{
-		return -1;
-	}
+	ASSERT(a_Monster != nullptr);
 
 	// Give the mob  full health.
 	a_Monster->SetHealth(a_Monster->GetMaxHealth());
@@ -3364,7 +3363,7 @@ int cWorld::SpawnMobFinalize(cMonster * a_Monster)
 	{
 		delete a_Monster;
 		a_Monster = nullptr;
-		return -1;
+		return cEntity::INVALID_ID;
 	}
 
 	// Initialize the monster into the current world.
@@ -3372,7 +3371,7 @@ int cWorld::SpawnMobFinalize(cMonster * a_Monster)
 	{
 		delete a_Monster;
 		a_Monster = nullptr;
-		return -1;
+		return cEntity::INVALID_ID;
 	}
 
 	cPluginManager::Get()->CallHookSpawnedMonster(*this, *a_Monster);
@@ -3384,18 +3383,18 @@ int cWorld::SpawnMobFinalize(cMonster * a_Monster)
 
 
 
-int cWorld::CreateProjectile(double a_PosX, double a_PosY, double a_PosZ, cProjectileEntity::eKind a_Kind, cEntity * a_Creator, const cItem * a_Item, const Vector3d * a_Speed)
+UInt32 cWorld::CreateProjectile(double a_PosX, double a_PosY, double a_PosZ, cProjectileEntity::eKind a_Kind, cEntity * a_Creator, const cItem * a_Item, const Vector3d * a_Speed)
 {
 	cProjectileEntity * Projectile = cProjectileEntity::Create(a_Kind, a_Creator, a_PosX, a_PosY, a_PosZ, a_Item, a_Speed);
 	if (Projectile == nullptr)
 	{
-		return -1;
+		return cEntity::INVALID_ID;
 	}
 	if (!Projectile->Initialize(*this))
 	{
 		delete Projectile;
 		Projectile = nullptr;
-		return -1;
+		return cEntity::INVALID_ID;
 	}
 	return Projectile->GetUniqueID();
 }
diff --git a/src/World.h b/src/World.h
index ffc10a9e4..1de241f60 100644
--- a/src/World.h
+++ b/src/World.h
@@ -216,7 +216,7 @@ public:
 	// (Please keep these alpha-sorted)
 	void BroadcastAttachEntity       (const cEntity & a_Entity, const cEntity * a_Vehicle);
 	void BroadcastBlockAction        (int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType, const cClientHandle * a_Exclude = nullptr);  // tolua_export
-	void BroadcastBlockBreakAnimation(int a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = nullptr);
+	void BroadcastBlockBreakAnimation(UInt32 a_EntityID, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Stage, const cClientHandle * a_Exclude = nullptr);
 	void BroadcastBlockEntity        (int a_BlockX, int a_BlockY, int a_BlockZ, const cClientHandle * a_Exclude = nullptr);  ///< If there is a block entity at the specified coods, sends it to all clients except a_Exclude
 
 	// tolua_begin
@@ -336,7 +336,9 @@ public:
 	The entity is added lazily - this function only puts it in a queue that is then processed by the Tick thread. */
 	void AddEntity(cEntity * a_Entity);
 	
-	bool HasEntity(int a_UniqueID);
+	/** Returns true if an entity with the specified UniqueID exists in the world.
+	Note: Only loaded chunks are considered. */
+	bool HasEntity(UInt32 a_UniqueID);
 	
 	/** Calls the callback for each entity in the entire world; returns true if all entities processed, false if the callback aborted by returning true */
 	bool ForEachEntity(cEntityCallback & a_Callback);  // Exported in ManualBindings.cpp
@@ -349,8 +351,9 @@ public:
 	If any chunk in the box is missing, ignores the entities in that chunk silently. */
 	bool ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback & a_Callback);  // Exported in ManualBindings.cpp
 
-	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param. Returns true if entity found and callback returned false. */
-	bool DoWithEntityByID(int a_UniqueID, cEntityCallback & a_Callback);  // Exported in ManualBindings.cpp
+	/** Calls the callback if the entity with the specified ID is found, with the entity object as the callback param.
+	Returns true if entity found and callback returned false. */
+	bool DoWithEntityByID(UInt32 a_UniqueID, cEntityCallback & a_Callback);  // Exported in ManualBindings.cpp
 
 	/** Compares clients of two chunks, calls the callback accordingly */
 	void CompareChunkClients(int a_ChunkX1, int a_ChunkZ1, int a_ChunkX2, int a_ChunkZ2, cClientDiffCallback & a_Callback);
@@ -477,20 +480,25 @@ public:
 	/** Spawns item pickups for each item in the list. May compress pickups if too many entities: */
 	virtual void SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_FlyAwaySpeed = 1.0, bool IsPlayerCreated = false) override;
 	
-	/** Spawns item pickups for each item in the list. May compress pickups if too many entities. All pickups get the speed specified: */
+	/** Spawns item pickups for each item in the list. May compress pickups if too many entities. All pickups get the speed specified. */
 	virtual void SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_SpeedX, double a_SpeedY, double a_SpeedZ, bool IsPlayerCreated = false) override;
 	
-	/** Spawns an falling block entity at the given position. It returns the UniqueID of the spawned falling block. */
-	int SpawnFallingBlock(int a_X, int a_Y, int a_Z, BLOCKTYPE BlockType, NIBBLETYPE BlockMeta);
+	/** Spawns an falling block entity at the given position.
+	Returns the UniqueID of the spawned falling block, or cEntity::INVALID_ID on failure. */
+	UInt32 SpawnFallingBlock(int a_X, int a_Y, int a_Z, BLOCKTYPE BlockType, NIBBLETYPE BlockMeta);
 
-	/** Spawns an minecart at the given coordinates. */
-	int SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType, const cItem & a_Content = cItem(), int a_BlockHeight = 1);
+	/** Spawns an minecart at the given coordinates.
+	Returns the UniqueID of the spawned minecart, or cEntity::INVALID_ID on failure. */
+	UInt32 SpawnMinecart(double a_X, double a_Y, double a_Z, int a_MinecartType, const cItem & a_Content = cItem(), int a_BlockHeight = 1);
 
-	/** Spawns an experience orb at the given location with the given reward. It returns the UniqueID of the spawned experience orb. */
-	virtual int SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward) override;
+	/** Spawns an experience orb at the given location with the given reward.
+	Returns the UniqueID of the spawned experience orb, or cEntity::INVALID_ID on failure. */
+	virtual UInt32 SpawnExperienceOrb(double a_X, double a_Y, double a_Z, int a_Reward) override;
 
-	/** Spawns a new primed TNT entity at the specified block coords and specified fuse duration. Initial velocity is given based on the relative coefficient provided */
-	void SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTimeInSec = 80, double a_InitialVelocityCoeff = 1);
+	/** Spawns a new primed TNT entity at the specified block coords and specified fuse duration.
+	Initial velocity is given based on the relative coefficient provided.
+	Returns the UniqueID of the created entity, or cEntity::INVALID_ID on failure. */
+	UInt32 SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTimeInSec = 80, double a_InitialVelocityCoeff = 1);
 
 	// tolua_end
 
@@ -796,14 +804,14 @@ public:
 
 	bool IsBlockDirectlyWatered(int a_BlockX, int a_BlockY, int a_BlockZ);  // tolua_export
 	
-	/** Spawns a mob of the specified type. Returns the mob's EntityID if recognized and spawned, <0 otherwise */
-	virtual int SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType) override;  // tolua_export
-	int SpawnMobFinalize(cMonster* a_Monster);
+	/** Spawns a mob of the specified type. Returns the mob's UniqueID if recognized and spawned, cEntity::INVALID_ID otherwise */
+	virtual UInt32 SpawnMob(double a_PosX, double a_PosY, double a_PosZ, eMonsterType a_MonsterType) override;  // tolua_export
+
+	UInt32 SpawnMobFinalize(cMonster * a_Monster);
 	
-	/** Creates a projectile of the specified type. Returns the projectile's EntityID if successful, <0 otherwise
-	Item parameter used currently for Fireworks to correctly set entity metadata based on item metadata
-	*/
-	int CreateProjectile(double a_PosX, double a_PosY, double a_PosZ, cProjectileEntity::eKind a_Kind, cEntity * a_Creator, const cItem * a_Item, const Vector3d * a_Speed = nullptr);  // tolua_export
+	/** Creates a projectile of the specified type. Returns the projectile's UniqueID if successful, cEntity::INVALID_ID otherwise
+	Item parameter is currently used for Fireworks to correctly set entity metadata based on item metadata. */
+	UInt32 CreateProjectile(double a_PosX, double a_PosY, double a_PosZ, cProjectileEntity::eKind a_Kind, cEntity * a_Creator, const cItem * a_Item, const Vector3d * a_Speed = nullptr);  // tolua_export
 	
 	/** Returns a random number from the m_TickRand in range [0 .. a_Range]. To be used only in the tick thread! */
 	int GetTickRandomNumber(int a_Range) { return (int)(m_TickRand.randInt(a_Range)); }