path: root/src/Protocol/Protocol_1_10.cpp

// Protocol_1_10.cpp

/*
Implements the 1.10 protocol classes:
	- cProtocol_1_10_0
		- release 1.10 protocol (#210), also used by 1.10.1 and 1.10.2
*/

#include "Globals.h"
#include "Protocol_1_10.h"
#include "Packetizer.h"

#include "json/json.h"

#include "../Root.h"
#include "../Server.h"
#include "../ClientHandle.h"
#include "../JsonUtils.h"

#include "../WorldStorage/FastNBT.h"

#include "../Entities/Boat.h"
#include "../Entities/EnderCrystal.h"
#include "../Entities/ExpOrb.h"
#include "../Entities/Minecart.h"
#include "../Entities/FallingBlock.h"
#include "../Entities/Painting.h"
#include "../Entities/Pickup.h"
#include "../Entities/Player.h"
#include "../Entities/ItemFrame.h"
#include "../Entities/ArrowEntity.h"
#include "../Entities/FireworkEntity.h"
#include "../Entities/SplashPotionEntity.h"

#include "../Mobs/IncludeAllMonsters.h"

#include "../BlockEntities/BannerEntity.h"
#include "../BlockEntities/BeaconEntity.h"
#include "../BlockEntities/CommandBlockEntity.h"
#include "../BlockEntities/MobHeadEntity.h"
#include "../BlockEntities/MobSpawnerEntity.h"
#include "../BlockEntities/FlowerPotEntity.h"

#include "../Bindings/PluginManager.h"





// The disabled error is intended, since the Metadata have overlapping indexes
// based on the type of the Entity.
//
// IMPORTANT: The enum is used to automate the sequential counting of the
// Metadata indexes. Adding a new enum value causes the following values to
// increase their index. Therefore the ordering of the enum values is VERY important!
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wduplicate-enum"
#endif

namespace Metadata
{
enum Metadata_Index
{
	// Entity
	ENTITY_FLAGS,
	ENTITY_AIR,
	ENTITY_CUSTOM_NAME,
	ENTITY_CUSTOM_NAME_VISIBLE,
	ENTITY_SILENT,
	ENTITY_NO_GRAVITY,
	_ENTITY_NEXT,  // Used by descendants

	// Potion
	POTION_THROWN = _ENTITY_NEXT,

	// FallingBlock
	FALLING_BLOCK_POSITION = _ENTITY_NEXT,

	// AreaEffectCloud
	AREA_EFFECT_CLOUD_RADIUS = _ENTITY_NEXT,
	AREA_EFFECT_CLOUD_COLOR,
	AREA_EFFECT_CLOUD_SINGLE_POINT_EFFECT,
	AREA_EFFECT_CLOUD_PARTICLE_ID,
	AREA_EFFECT_CLOUD_PARTICLE_PARAMETER1,
	AREA_EFFECT_CLOUD_PARTICLE_PARAMETER2,

	// Arrow
	ARROW_CRITICAL = _ENTITY_NEXT,
	_ARROW_NEXT,

	// TippedArrow
	TIPPED_ARROW_COLOR = _ARROW_NEXT,

	// Boat
	BOAT_LAST_HIT_TIME = _ENTITY_NEXT,
	BOAT_FORWARD_DIRECTION,
	BOAT_DAMAGE_TAKEN,
	BOAT_TYPE,
	BOAT_RIGHT_PADDLE_TURNING,
	BOAT_LEFT_PADDLE_TURNING,

	// EnderCrystal
	ENDER_CRYSTAL_BEAM_TARGET = _ENTITY_NEXT,
	ENDER_CRYSTAL_SHOW_BOTTOM,

	// Fireball
	_FIREBALL_NEXT = _ENTITY_NEXT,

	// WitherSkull
	WITHER_SKULL_INVULNERABLE = _FIREBALL_NEXT,

	// Fireworks
	FIREWORK_INFO = _ENTITY_NEXT,

	// Hanging
	_HANGING_NEXT = _ENTITY_NEXT,

	// ItemFrame
	ITEM_FRAME_ITEM = _HANGING_NEXT,
	ITEM_FRAME_ROTATION,

	// Item
	ITEM_ITEM = _ENTITY_NEXT,

	// Living
	LIVING_ACTIVE_HAND = _ENTITY_NEXT,
	LIVING_HEALTH,
	LIVING_POTION_EFFECT_COLOR,
	LIVING_POTION_EFFECT_AMBIENT,
	LIVING_NUMBER_OF_ARROWS,
	_LIVING_NEXT,

	// Player
	PLAYER_ADDITIONAL_HEARTHS = _LIVING_NEXT,
	PLAYER_SCORE,
	PLAYER_DISPLAYED_SKIN_PARTS,
	PLAYER_MAIN_HAND,

	// ArmorStand
	ARMOR_STAND_STATUS = _LIVING_NEXT,
	ARMOR_STAND_HEAD_ROTATION,
	ARMOR_STAND_BODY_ROTATION,
	ARMOR_STAND_LEFT_ARM_ROTATION,
	ARMOR_STAND_RIGHT_ARM_ROTATION,
	ARMOR_STAND_LEFT_LEG_ROTATION,
	ARMOR_STAND_RIGHT_LEG_ROTATION,

	// Insentient
	INSENTIENT_STATUS = _LIVING_NEXT,
	_INSENTIENT_NEXT,

	// Ambient
	_AMBIENT_NEXT = _INSENTIENT_NEXT,

	// Bat
	BAT_HANGING = _AMBIENT_NEXT,

	// Creature
	_CREATURE_NEXT = _INSENTIENT_NEXT,

	// Ageable
	AGEABLE_BABY = _CREATURE_NEXT,
	_AGEABLE_NEXT,

	// PolarBear
	POLAR_BEAR_STANDING = _AGEABLE_NEXT,

	// Animal
	_ANIMAL_NEXT = _AGEABLE_NEXT,

	// Horse
	HORSE_STATUS = _ANIMAL_NEXT,
	HORSE_TYPE,
	HORSE_VARIANT,
	HORSE_OWNER,
	HORSE_ARMOR,

	// Pig
	PIG_HAS_SADDLE = _ANIMAL_NEXT,

	// Rabbit
	RABBIT_TYPE = _ANIMAL_NEXT,

	// Sheep
	SHEEP_STATUS = _ANIMAL_NEXT,

	// TameableAnimal
	TAMEABLE_ANIMAL_STATUS = _ANIMAL_NEXT,
	TAMEABLE_ANIMAL_OWNER,
	_TAMEABLE_NEXT,

	// Ocelot
	OCELOT_TYPE = _TAMEABLE_NEXT,

	// Wolf
	WOLF_DAMAGE_TAKEN = _TAMEABLE_NEXT,
	WOLF_BEGGING,
	WOLF_COLLAR_COLOR,

	// Villager
	VILLAGER_PROFESSION = _AGEABLE_NEXT,

	// Golem
	_GOLEM_NEXT = _CREATURE_NEXT,

	// IronGolem
	IRON_GOLEM_PLAYER_CREATED = _GOLEM_NEXT,

	// Shulker
	SHULKER_FACING_DIRECTION = _GOLEM_NEXT,
	SHULKER_ATTACHMENT_FALLING_BLOCK_POSITION,
	SHULKER_SHIELD_HEIGHT,

	// Monster
	_MONSTER_NEXT = _CREATURE_NEXT,

	// Blaze
	BLAZE_ON_FIRE = _MONSTER_NEXT,

	// Creeper
	CREEPER_STATE = _MONSTER_NEXT,
	CREEPER_POWERED,
	CREEPER_IGNITED,

	// Guardian
	GUARDIAN_STATUS = _MONSTER_NEXT,
	GUARDIAN_TARGET,

	// Skeleton
	SKELETON_TYPE = _MONSTER_NEXT,
	SKELETON_ARMS_SWINGING,

	// Spider
	SPIDER_CLIMBING = _MONSTER_NEXT,

	// Witch
	WITCH_AGGRESIVE = _MONSTER_NEXT,

	// Wither
	WITHER_FIRST_HEAD_TARGET = _MONSTER_NEXT,
	WITHER_SECOND_HEAD_TARGET,
	WITHER_THIRD_HEAD_TARGET,
	WITHER_INVULNERABLE_TIMER,

	// Zombie
	ZOMBIE_IS_BABY = _MONSTER_NEXT,
	ZOMBIE_TYPE,
	ZOMBIE_CONVERTING,
	ZOMBIE_HANDS_RISED_UP,

	// Enderman
	ENDERMAN_CARRIED_BLOCK = _MONSTER_NEXT,
	ENDERMAN_SCREAMING,

	// EnderDragon
	ENDER_DRAGON_DRAGON_PHASE = _INSENTIENT_NEXT,

	// Flying
	_FLYING_NEXT = _INSENTIENT_NEXT,

	// Ghast
	GHAST_ATTACKING = _FLYING_NEXT,

	// Slime
	SLIME_SIZE = _INSENTIENT_NEXT,

	// Minecart
	MINECART_SHAKING_POWER = _ENTITY_NEXT,
	MINECART_SHAKING_DIRECTION,
	MINECART_SHAKING_MULTIPLIER,
	MINECART_BLOCK_ID_META,
	MINECART_BLOCK_Y,
	MINECART_SHOW_BLOCK,
	_MINECART_NEXT,

	// MinecartCommandBlock
	MINECART_COMMAND_BLOCK_COMMAND = _MINECART_NEXT,
	MINECART_COMMAND_BLOCK_LAST_OUTPUT,

	// MinecartFurnace
	MINECART_FURNACE_POWERED = _MINECART_NEXT,

	// TNTPrimed
	TNT_PRIMED_FUSE_TIME = _ENTITY_NEXT,
};
}

#ifdef __clang__
#pragma clang diagnostic pop  // Restore ignored clang errors
#endif





////////////////////////////////////////////////////////////////////////////////
// cProtocol_1_10_0:

void cProtocol_1_10_0::SendSoundEffect(const AString & a_SoundName, Vector3d a_Origin, float a_Volume, float a_Pitch)
{
	ASSERT(m_State == 3);  // In game mode?

	cPacketizer Pkt(*this, pktSoundEffect);
	Pkt.WriteString(a_SoundName);
	Pkt.WriteVarInt32(0);  // Master sound category (may want to be changed to a parameter later)
	Pkt.WriteBEInt32(FloorC(a_Origin.x * 8.0));
	Pkt.WriteBEInt32(FloorC(a_Origin.y * 8.0));
	Pkt.WriteBEInt32(FloorC(a_Origin.z * 8.0));
	Pkt.WriteBEFloat(a_Volume);
	Pkt.WriteBEFloat(a_Pitch);
}





UInt32 cProtocol_1_10_0::GetProtocolMobType(const eMonsterType a_MobType) const
{
	switch (a_MobType)
	{
		case mtPolarBear: return 102;
		default:          return Super::GetProtocolMobType(a_MobType);
	}
}





cProtocol::Version cProtocol_1_10_0::GetProtocolVersion() const
{
	return Version::v1_10_0;
}





void cProtocol_1_10_0::HandlePacketResourcePackStatus(cByteBuffer & a_ByteBuffer)
{
	HANDLE_READ(a_ByteBuffer, ReadBEUInt8, UInt8, Status);
	m_Client->HandleResourcePack(Status);
}





void cProtocol_1_10_0::WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity) const
{
	using namespace Metadata;

	// Common metadata:
	Int8 Flags = 0;
	if (a_Entity.IsOnFire())
	{
		Flags |= 0x01;
	}
	if (a_Entity.IsCrouched())
	{
		Flags |= 0x02;
	}
	if (a_Entity.IsSprinting())
	{
		Flags |= 0x08;
	}
	if (a_Entity.IsRclking())
	{
		Flags |= 0x10;
	}
	if (a_Entity.IsInvisible())
	{
		Flags |= 0x20;
	}
	a_Pkt.WriteBEUInt8(ENTITY_FLAGS);  // Index
	a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);  // Type
	a_Pkt.WriteBEInt8(Flags);

	switch (a_Entity.GetEntityType())
	{
		case cEntity::etPlayer:
		{
			auto & Player = static_cast<const cPlayer &>(a_Entity);

			// TODO Set player custom name to their name.
			// Then it's possible to move the custom name of mobs to the entities
			// and to remove the "special" player custom name.
			a_Pkt.WriteBEUInt8(ENTITY_CUSTOM_NAME);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_STRING);
			a_Pkt.WriteString(Player.GetName());

			a_Pkt.WriteBEUInt8(LIVING_HEALTH);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_FLOAT);
			a_Pkt.WriteBEFloat(static_cast<float>(Player.GetHealth()));

			a_Pkt.WriteBEUInt8(PLAYER_DISPLAYED_SKIN_PARTS);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEUInt8(static_cast<UInt8>(Player.GetSkinParts()));

			a_Pkt.WriteBEUInt8(PLAYER_MAIN_HAND);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEUInt8(Player.IsLeftHanded() ? 0 : 1);
			break;
		}
		case cEntity::etPickup:
		{
			a_Pkt.WriteBEUInt8(ITEM_ITEM);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
			WriteItem(a_Pkt, static_cast<const cPickup &>(a_Entity).GetItem());
			break;
		}
		case cEntity::etMinecart:
		{
			a_Pkt.WriteBEUInt8(MINECART_SHAKING_POWER);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);

			// The following expression makes Minecarts shake more with less health or higher damage taken
			auto & Minecart = static_cast<const cMinecart &>(a_Entity);
			auto maxHealth = a_Entity.GetMaxHealth();
			auto curHealth = a_Entity.GetHealth();
			a_Pkt.WriteVarInt32(static_cast<UInt32>((maxHealth - curHealth) * Minecart.LastDamage() * 4));

			a_Pkt.WriteBEUInt8(MINECART_SHAKING_DIRECTION);  // (doesn't seem to effect anything)
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(1);

			a_Pkt.WriteBEUInt8(MINECART_SHAKING_MULTIPLIER);  // or damage taken
			a_Pkt.WriteBEUInt8(METADATA_TYPE_FLOAT);
			a_Pkt.WriteBEFloat(static_cast<float>(Minecart.LastDamage() + 10));

			if (Minecart.GetPayload() == cMinecart::mpNone)
			{
				auto & RideableMinecart = static_cast<const cRideableMinecart &>(Minecart);
				const cItem & MinecartContent = RideableMinecart.GetContent();
				if (!MinecartContent.IsEmpty())
				{
					a_Pkt.WriteBEUInt8(MINECART_BLOCK_ID_META);
					a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
					int Content = MinecartContent.m_ItemType;
					Content |= MinecartContent.m_ItemDamage << 8;
					a_Pkt.WriteVarInt32(static_cast<UInt32>(Content));

					a_Pkt.WriteBEUInt8(MINECART_BLOCK_Y);
					a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
					a_Pkt.WriteVarInt32(static_cast<UInt32>(RideableMinecart.GetBlockHeight()));

					a_Pkt.WriteBEUInt8(MINECART_SHOW_BLOCK);
					a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
					a_Pkt.WriteBool(true);
				}
			}
			else if (Minecart.GetPayload() == cMinecart::mpFurnace)
			{
				a_Pkt.WriteBEUInt8(MINECART_FURNACE_POWERED);
				a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
				a_Pkt.WriteBool(static_cast<const cMinecartWithFurnace &>(Minecart).IsFueled());
			}
			break;
		}  // case etMinecart

		case cEntity::etProjectile:
		{
			auto & Projectile = static_cast<const cProjectileEntity &>(a_Entity);
			switch (Projectile.GetProjectileKind())
			{
				case cProjectileEntity::pkArrow:
				{
					a_Pkt.WriteBEUInt8(ARROW_CRITICAL);
					a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
					a_Pkt.WriteBEInt8(static_cast<const cArrowEntity &>(Projectile).IsCritical() ? 1 : 0);
					break;
				}
				case cProjectileEntity::pkFirework:
				{
					a_Pkt.WriteBEUInt8(FIREWORK_INFO);  // Firework item used for this firework
					a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
					WriteItem(a_Pkt, static_cast<const cFireworkEntity &>(Projectile).GetItem());
					break;
				}
				case cProjectileEntity::pkSplashPotion:
				{
					a_Pkt.WriteBEUInt8(POTION_THROWN);  // Potion item which was thrown
					a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
					WriteItem(a_Pkt, static_cast<const cSplashPotionEntity &>(Projectile).GetItem());
				}
				default:
				{
					break;
				}
			}
			break;
		}  // case etProjectile

		case cEntity::etMonster:
		{
			WriteMobMetadata(a_Pkt, static_cast<const cMonster &>(a_Entity));
			break;
		}

		case cEntity::etBoat:
		{
			auto & Boat = static_cast<const cBoat &>(a_Entity);

			a_Pkt.WriteBEInt8(BOAT_LAST_HIT_TIME);
			a_Pkt.WriteBEInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Boat.GetLastDamage()));

			a_Pkt.WriteBEInt8(BOAT_FORWARD_DIRECTION);
			a_Pkt.WriteBEInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Boat.GetForwardDirection()));

			a_Pkt.WriteBEInt8(BOAT_DAMAGE_TAKEN);
			a_Pkt.WriteBEInt8(METADATA_TYPE_FLOAT);
			a_Pkt.WriteBEFloat(Boat.GetDamageTaken());

			a_Pkt.WriteBEInt8(BOAT_TYPE);
			a_Pkt.WriteBEInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Boat.GetMaterial()));

			a_Pkt.WriteBEInt8(BOAT_RIGHT_PADDLE_TURNING);
			a_Pkt.WriteBEInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Boat.IsRightPaddleUsed());

			a_Pkt.WriteBEInt8(BOAT_LEFT_PADDLE_TURNING);
			a_Pkt.WriteBEInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Boat.IsLeftPaddleUsed());

			break;
		}  // case etBoat

		case cEntity::etItemFrame:
		{
			auto & Frame = static_cast<const cItemFrame &>(a_Entity);
			a_Pkt.WriteBEUInt8(ITEM_FRAME_ITEM);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
			WriteItem(a_Pkt, Frame.GetItem());
			a_Pkt.WriteBEUInt8(ITEM_FRAME_ROTATION);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(Frame.GetItemRotation());
			break;
		}  // case etItemFrame

		case cEntity::etEnderCrystal:
		{
			const auto & EnderCrystal = static_cast<const cEnderCrystal &>(a_Entity);
			a_Pkt.WriteBEUInt8(ENDER_CRYSTAL_BEAM_TARGET);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_OPTIONAL_POSITION);
			a_Pkt.WriteBool(EnderCrystal.DisplaysBeam());
			if (EnderCrystal.DisplaysBeam())
			{
				a_Pkt.WriteXYZPosition64(EnderCrystal.GetBeamTarget());
			}
			a_Pkt.WriteBEUInt8(ENDER_CRYSTAL_SHOW_BOTTOM);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(EnderCrystal.ShowsBottom());
			break;
		}  // case etEnderCrystal

		default:
		{
			break;
		}
	}
}





void cProtocol_1_10_0::WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob) const
{
	using namespace Metadata;

	// Living entity metadata
	if (a_Mob.HasCustomName())
	{
		// TODO: As of 1.9 _all_ entities can have custom names; should this be moved up?
		a_Pkt.WriteBEUInt8(ENTITY_CUSTOM_NAME);
		a_Pkt.WriteBEUInt8(METADATA_TYPE_STRING);
		a_Pkt.WriteString(a_Mob.GetCustomName());

		a_Pkt.WriteBEUInt8(ENTITY_CUSTOM_NAME_VISIBLE);  // Custom name always visible
		a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
		a_Pkt.WriteBool(a_Mob.IsCustomNameAlwaysVisible());
	}

	a_Pkt.WriteBEUInt8(LIVING_HEALTH);
	a_Pkt.WriteBEUInt8(METADATA_TYPE_FLOAT);
	a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));

	switch (a_Mob.GetMobType())
	{
		case mtBat:
		{
			auto & Bat = static_cast<const cBat &>(a_Mob);
			a_Pkt.WriteBEUInt8(BAT_HANGING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEInt8(Bat.IsHanging() ? 1 : 0);
			break;
		}  // case mtBat

		case mtChicken:
		{
			auto & Chicken = static_cast<const cChicken &>(a_Mob);

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Chicken.IsBaby());
			break;
		}  // case mtChicken

		case mtCow:
		{
			auto & Cow = static_cast<const cCow &>(a_Mob);

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Cow.IsBaby());
			break;
		}  // case mtCow

		case mtCreeper:
		{
			auto & Creeper = static_cast<const cCreeper &>(a_Mob);
			a_Pkt.WriteBEUInt8(CREEPER_STATE);  // (idle or "blowing")
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(Creeper.IsBlowing() ? 1 : static_cast<UInt32>(-1));

			a_Pkt.WriteBEUInt8(CREEPER_POWERED);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Creeper.IsCharged());

			a_Pkt.WriteBEUInt8(CREEPER_IGNITED);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Creeper.IsBurnedWithFlintAndSteel());
			break;
		}  // case mtCreeper

		case mtEnderman:
		{
			auto & Enderman = static_cast<const cEnderman &>(a_Mob);
			a_Pkt.WriteBEUInt8(ENDERMAN_CARRIED_BLOCK);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BLOCKID);
			UInt32 Carried = 0;
			Carried |= static_cast<UInt32>(Enderman.GetCarriedBlock() << 4);
			Carried |= Enderman.GetCarriedMeta();
			a_Pkt.WriteVarInt32(Carried);

			a_Pkt.WriteBEUInt8(ENDERMAN_SCREAMING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Enderman.IsScreaming());
			break;
		}  // case mtEnderman

		case mtGhast:
		{
			auto & Ghast = static_cast<const cGhast &>(a_Mob);
			a_Pkt.WriteBEUInt8(GHAST_ATTACKING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Ghast.IsCharging());
			break;
		}  // case mtGhast

		case mtHorse:
		{
			auto & Horse = static_cast<const cHorse &>(a_Mob);
			Int8 Flags = 0;
			if (Horse.IsTame())
			{
				Flags |= 0x02;
			}
			if (Horse.IsSaddled())
			{
				Flags |= 0x04;
			}
			if (Horse.IsChested())
			{
				Flags |= 0x08;
			}
			if (Horse.IsEating())
			{
				Flags |= 0x20;
			}
			if (Horse.IsRearing())
			{
				Flags |= 0x40;
			}
			if (Horse.IsMthOpen())
			{
				Flags |= 0x80;
			}
			a_Pkt.WriteBEUInt8(HORSE_STATUS);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEInt8(Flags);

			a_Pkt.WriteBEUInt8(HORSE_TYPE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Horse.GetHorseType()));

			a_Pkt.WriteBEUInt8(HORSE_VARIANT);  // Color / style
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			int Appearance = 0;
			Appearance = Horse.GetHorseColor();
			Appearance |= Horse.GetHorseStyle() << 8;
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Appearance));

			a_Pkt.WriteBEUInt8(HORSE_ARMOR);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Horse.GetHorseArmour()));

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Horse.IsBaby());
			break;
		}  // case mtHorse

		case mtMagmaCube:
		{
			auto & MagmaCube = static_cast<const cMagmaCube &>(a_Mob);
			a_Pkt.WriteBEUInt8(SLIME_SIZE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(MagmaCube.GetSize()));
			break;
		}  // case mtMagmaCube

		case mtOcelot:
		{
			auto & Ocelot = static_cast<const cOcelot &>(a_Mob);

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Ocelot.IsBaby());
			break;
		}  // case mtOcelot

		case mtPig:
		{
			auto & Pig = static_cast<const cPig &>(a_Mob);

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Pig.IsBaby());

			a_Pkt.WriteBEUInt8(PIG_HAS_SADDLE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Pig.IsSaddled());

			break;
		}  // case mtPig

		case mtRabbit:
		{
			auto & Rabbit = static_cast<const cRabbit &>(a_Mob);
			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Rabbit.IsBaby());

			a_Pkt.WriteBEUInt8(RABBIT_TYPE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Rabbit.GetRabbitType()));
			break;
		}  // case mtRabbit

		case mtSheep:
		{
			auto & Sheep = static_cast<const cSheep &>(a_Mob);

			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Sheep.IsBaby());

			a_Pkt.WriteBEUInt8(SHEEP_STATUS);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			Int8 SheepMetadata = 0;
			SheepMetadata = static_cast<Int8>(Sheep.GetFurColor());
			if (Sheep.IsSheared())
			{
				SheepMetadata |= 0x10;
			}
			a_Pkt.WriteBEInt8(SheepMetadata);
			break;
		}  // case mtSheep

		case mtSkeleton:
		{
			auto & Skeleton = static_cast<const cSkeleton &>(a_Mob);
			a_Pkt.WriteBEUInt8(LIVING_ACTIVE_HAND);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEUInt8(Skeleton.IsChargingBow() ? 0x01 : 0x00);

			a_Pkt.WriteBEUInt8(SKELETON_ARMS_SWINGING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Skeleton.IsChargingBow());
			break;
		}  // case mtSkeleton

		case mtSlime:
		{
			auto & Slime = static_cast<const cSlime &>(a_Mob);
			a_Pkt.WriteBEUInt8(SLIME_SIZE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Slime.GetSize()));
			break;
		}  // case mtSlime

		case mtVillager:
		{
			auto & Villager = static_cast<const cVillager &>(a_Mob);
			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Villager.IsBaby());

			a_Pkt.WriteBEUInt8(VILLAGER_PROFESSION);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Villager.GetVilType()));
			break;
		}  // case mtVillager

		case mtWitch:
		{
			auto & Witch = static_cast<const cWitch &>(a_Mob);
			a_Pkt.WriteBEUInt8(WITCH_AGGRESIVE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Witch.IsAngry());
			break;
		}  // case mtWitch

		case mtWither:
		{
			auto & Wither = static_cast<const cWither &>(a_Mob);
			a_Pkt.WriteBEUInt8(WITHER_INVULNERABLE_TIMER);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(Wither.GetWitherInvulnerableTicks());

			// TODO: Use boss bar packet for health
			break;
		}  // case mtWither

		case mtWitherSkeleton:
		{
			a_Pkt.WriteBEUInt8(SKELETON_TYPE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(1);  // Is wither skeleton
			break;
		}  // case mtWitherSkeleton

		case mtWolf:
		{
			auto & Wolf = static_cast<const cWolf &>(a_Mob);
			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Wolf.IsBaby());

			Int8 WolfStatus = 0;
			if (Wolf.IsSitting())
			{
				WolfStatus |= 0x1;
			}
			if (Wolf.IsAngry())
			{
				WolfStatus |= 0x2;
			}
			if (Wolf.IsTame())
			{
				WolfStatus |= 0x4;
			}
			a_Pkt.WriteBEUInt8(TAMEABLE_ANIMAL_STATUS);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
			a_Pkt.WriteBEInt8(WolfStatus);

			a_Pkt.WriteBEUInt8(WOLF_DAMAGE_TAKEN);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_FLOAT);
			a_Pkt.WriteBEFloat(static_cast<float>(a_Mob.GetHealth()));  // TODO Not use the current health

			a_Pkt.WriteBEUInt8(WOLF_BEGGING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Wolf.IsBegging());

			a_Pkt.WriteBEUInt8(WOLF_COLLAR_COLOR);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(static_cast<UInt32>(Wolf.GetCollarColor()));
			break;
		}  // case mtWolf

		case mtHusk:
		case mtZombie:
		{
			auto & Zombie = static_cast<const cZombie &>(a_Mob);
			a_Pkt.WriteBEUInt8(ZOMBIE_IS_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(Zombie.IsBaby());

			a_Pkt.WriteBEUInt8(ZOMBIE_TYPE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(0);

			a_Pkt.WriteBEUInt8(ZOMBIE_CONVERTING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(false);
			break;
		}  // case mtZombie

		case mtZombiePigman:
		{
			auto & ZombiePigman = static_cast<const cZombiePigman &>(a_Mob);
			a_Pkt.WriteBEUInt8(AGEABLE_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(ZombiePigman.IsBaby());
			break;
		}  // case mtZombiePigman

		case mtZombieVillager:
		{
			auto & ZombieVillager = reinterpret_cast<const cZombieVillager &>(a_Mob);
			a_Pkt.WriteBEUInt8(ZOMBIE_IS_BABY);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(ZombieVillager.IsBaby());

			a_Pkt.WriteBEUInt8(ZOMBIE_TYPE);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
			a_Pkt.WriteVarInt32(ZombieVillager.GetProfession());

			a_Pkt.WriteBEUInt8(ZOMBIE_CONVERTING);
			a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
			a_Pkt.WriteBool(ZombieVillager.ConversionTime() != -1);
			break;
		}  // case mtZombieVillager

		case mtBlaze:
		case mtElderGuardian:
		case mtGuardian:
		{
			// TODO: Mobs with extra fields that aren't implemented
			break;
		}
		case mtCat:

		case mtPolarBear:

		case mtShulker:

		case mtDonkey:
		case mtMule:
		case mtSkeletonHorse:
		case mtZombieHorse:
		{
			// Todo: Mobs not added yet. Grouped ones have the same metadata
			ASSERT(!"cProtocol_1_10::WriteMobMetadata: received unimplemented type");
			break;
		}

		case mtCaveSpider:
		case mtEnderDragon:
		case mtEndermite:
		case mtGiant:
		case mtIronGolem:
		case mtMooshroom:
		case mtSilverfish:
		case mtSnowGolem:
		case mtStray:
		case mtSpider:
		case mtSquid:
		{
			// Entities without additional metadata
			break;
		}

		default: UNREACHABLE("cProtocol_1_10::WriteMobMetadata: received mob of invalid type");
	}  // switch (a_Mob.GetType())
}