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cuberite-2a/src/Protocol/Protocol_1_12.cpp
9caihezi 4242431407 Rewrite cClientHandle::HandleRightClick (#4089) 
* Add hand parameter to distinguish main hand/off hand.
* Add a new function cClientHandle::HandleUseItem to separate the functionality of using an item without a target block. This matches the protocol with client version >= 1.9
* Always actively update the status of a block if the placement fails (by out of reach or rejected by plugin).
* Do not call plugin callback CallHookPlayerRightClick(-1, 255, -1, -1, 0, 0, 0) when using item.
   The CallHookPlayerUsingItem will still be called.
   Now at most one of CallHookPlayerRightClick, CallHookPlayerUsingBlock,
   CallHookPlayerUsingItem and CallHookPlayerEating will be called based on
   the type of action (not including the used version of callbacks).
* Do not count using item as BlockInteractionsRate check (Using item takes time).
* Now we can open chests(etc.) when sneaking as long as the player's hand is empty.
   This is what vanilla server does.
2018-01-08 13:37:10 +00:00

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// Protocol_1_12.cpp
/*
Implements the 1.12 protocol classes:
- release 1.12 protocol (#335)
*/
#include "Globals.h"
#include "Protocol_1_12.h"
#include "ProtocolRecognizer.h"
#include "Packetizer.h"
#include "../Entities/Boat.h"
#include "../Entities/Minecart.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 "../Root.h"
#include "../Server.h"
#include "../ClientHandle.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,
FIREWORK_BOOSTED_ENTITY_ID, // 1.11.1 only
// 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,
// Abstract horse
ABSTRACT_HORSE_STATUS = _ANIMAL_NEXT,
ABSTRACT_HORSE_OWNER,
_ABSTRACT_HORSE_NEXT,
// Horse
HORSE_VARIANT = _ABSTRACT_HORSE_NEXT,
HORSE_ARMOR,
// Chested horse
CHESTED_HORSE_CHESTED = _ABSTRACT_HORSE_NEXT,
_CHESTED_HORSE_NEXT,
// Llama
LLAMA_STRENGTH = _CHESTED_HORSE_NEXT,
LLAMA_CARPET_COLOR,
LLAMA_VARIANT,
// Pig
PIG_HAS_SADDLE = _ANIMAL_NEXT,
PIG_TOTAL_CARROT_ON_A_STICK_BOOST, // 1.11.1 only
// 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,
// Abstract Skeleton
ABSTRACT_SKELETON_ARMS_SWINGING = _MONSTER_NEXT,
// 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_UNUSED, // Was type
ZOMBIE_HANDS_RISED_UP,
_ZOMBIE_NEXT,
// Zombie villager
ZOMBIE_VILLAGER_CONVERTING = _ZOMBIE_NEXT,
ZOMBIE_VILLAGER_PROFESSION,
// Enderman
ENDERMAN_CARRIED_BLOCK = _MONSTER_NEXT,
ENDERMAN_SCREAMING,
// Evocation illager
EVOKER_SPELL = _MONSTER_NEXT,
// Vex
VEX_FLAGS = _MONSTER_NEXT,
// Vindication illager
VINDICATOR_FLAGS = _MONSTER_NEXT,
// 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
#define HANDLE_READ(ByteBuf, Proc, Type, Var) \
Type Var; \
if (!ByteBuf.Proc(Var))\
{\
return;\
}
cProtocol_1_12::cProtocol_1_12(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
super(a_Client, a_ServerAddress, a_ServerPort, a_State)
{
}
void cProtocol_1_12::SendSpawnMob(const cMonster & a_Mob)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, 0x03); // Spawn Mob packet
Pkt.WriteVarInt32(a_Mob.GetUniqueID());
// TODO: Bad way to write a UUID, and it's not a true UUID, but this is functional for now.
Pkt.WriteBEUInt64(0);
Pkt.WriteBEUInt64(a_Mob.GetUniqueID());
Pkt.WriteVarInt32(static_cast<UInt32>(a_Mob.GetMobType()));
Pkt.WriteBEDouble(a_Mob.GetPosX());
Pkt.WriteBEDouble(a_Mob.GetPosY());
Pkt.WriteBEDouble(a_Mob.GetPosZ());
Pkt.WriteByteAngle(a_Mob.GetPitch());
Pkt.WriteByteAngle(a_Mob.GetHeadYaw());
Pkt.WriteByteAngle(a_Mob.GetYaw());
Pkt.WriteBEInt16(static_cast<Int16>(a_Mob.GetSpeedX() * 400));
Pkt.WriteBEInt16(static_cast<Int16>(a_Mob.GetSpeedY() * 400));
Pkt.WriteBEInt16(static_cast<Int16>(a_Mob.GetSpeedZ() * 400));
WriteEntityMetadata(Pkt, a_Mob);
Pkt.WriteBEUInt8(0xff); // Metadata terminator
}
void cProtocol_1_12::HandlePacketBlockPlace(cByteBuffer & a_ByteBuffer)
{
int BlockX, BlockY, BlockZ;
if (!a_ByteBuffer.ReadPosition64(BlockX, BlockY, BlockZ))
{
return;
}
HANDLE_READ(a_ByteBuffer, ReadVarInt, Int32, Face);
HANDLE_READ(a_ByteBuffer, ReadVarInt, Int32, Hand);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, CursorX);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, CursorY);
HANDLE_READ(a_ByteBuffer, ReadBEFloat, float, CursorZ);
m_Client->HandleRightClick(BlockX, BlockY, BlockZ, FaceIntToBlockFace(Face), FloorC(CursorX * 16), FloorC(CursorY * 16), FloorC(CursorZ * 16), HandIntToEnum(Hand));
}
void cProtocol_1_12::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
{
cServer * Server = cRoot::Get()->GetServer();
AString ServerDescription = Server->GetDescription();
auto NumPlayers = static_cast<signed>(Server->GetNumPlayers());
auto MaxPlayers = static_cast<signed>(Server->GetMaxPlayers());
AString Favicon = Server->GetFaviconData();
cRoot::Get()->GetPluginManager()->CallHookServerPing(*m_Client, ServerDescription, NumPlayers, MaxPlayers, Favicon);
// Version:
Json::Value Version;
Version["name"] = "Cuberite 1.12";
Version["protocol"] = cProtocolRecognizer::PROTO_VERSION_1_12;
// Players:
Json::Value Players;
Players["online"] = NumPlayers;
Players["max"] = MaxPlayers;
// TODO: Add "sample"
// Description:
Json::Value Description;
Description["text"] = ServerDescription.c_str();
// Create the response:
Json::Value ResponseValue;
ResponseValue["version"] = Version;
ResponseValue["players"] = Players;
ResponseValue["description"] = Description;
m_Client->ForgeAugmentServerListPing(ResponseValue);
if (!Favicon.empty())
{
ResponseValue["favicon"] = Printf("data:image/png;base64,%s", Favicon.c_str());
}
// Serialize the response into a packet:
Json::FastWriter Writer;
cPacketizer Pkt(*this, 0x00); // Response packet
Pkt.WriteString(Writer.write(ResponseValue));
}
void cProtocol_1_12::WriteEntityMetadata(cPacketizer & a_Pkt, const cEntity & a_Entity)
{
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 = reinterpret_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(static_cast<UInt8>(Player.GetMainHand()));
break;
}
case cEntity::etPickup:
{
a_Pkt.WriteBEUInt8(ITEM_ITEM);
a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
WriteItem(a_Pkt, reinterpret_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 = reinterpret_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 = reinterpret_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(reinterpret_cast<const cMinecartWithFurnace &>(Minecart).IsFueled());
}
break;
} // case etMinecart
case cEntity::etProjectile:
{
auto & Projectile = reinterpret_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(reinterpret_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, reinterpret_cast<const cFireworkEntity &>(Projectile).GetItem());
// FIREWORK_BOOSTED_ENTITY_ID, in 1.11.1 only
break;
}
case cProjectileEntity::pkSplashPotion:
{
a_Pkt.WriteBEUInt8(POTION_THROWN); // Potion item which was thrown
a_Pkt.WriteBEUInt8(METADATA_TYPE_ITEM);
WriteItem(a_Pkt, reinterpret_cast<const cSplashPotionEntity &>(Projectile).GetItem());
}
default:
{
break;
}
}
break;
} // case etProjectile
case cEntity::etMonster:
{
WriteMobMetadata(a_Pkt, reinterpret_cast<const cMonster &>(a_Entity));
break;
}
case cEntity::etBoat:
{
auto & Boat = reinterpret_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 = reinterpret_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
default:
{
break;
}
}
}
void cProtocol_1_12::WriteMobMetadata(cPacketizer & a_Pkt, const cMonster & a_Mob)
{
using namespace Metadata;
// Living Enitiy 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 = reinterpret_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 = reinterpret_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 = reinterpret_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 = reinterpret_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 = reinterpret_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 = reinterpret_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:
{
// XXX This behaves incorrectly with different varients; horses have different entity IDs now
// Abstract horse
auto & Horse = reinterpret_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(ABSTRACT_HORSE_STATUS);
a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
a_Pkt.WriteBEInt8(Flags);
// This doesn't exist any more; it'll cause horses to all be the normal type
// a_Pkt.WriteBEUInt8(HORSE_TYPE);
// a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
// a_Pkt.WriteVarInt32(static_cast<UInt32>(Horse.GetHorseType()));
// Regular horses
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 = reinterpret_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 = reinterpret_cast<const cOcelot &>(a_Mob);
a_Pkt.WriteBEUInt8(AGEABLE_BABY);
a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
a_Pkt.WriteBool(Ocelot.IsBaby());
Int8 OcelotStatus = 0;
if (Ocelot.IsSitting())
{
OcelotStatus |= 0x1;
}
if (Ocelot.IsTame())
{
OcelotStatus |= 0x4;
}
a_Pkt.WriteBEUInt8(TAMEABLE_ANIMAL_STATUS);
a_Pkt.WriteBEUInt8(METADATA_TYPE_BYTE);
a_Pkt.WriteBEInt8(OcelotStatus);
a_Pkt.WriteBEUInt8(OCELOT_TYPE);
a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
a_Pkt.WriteVarInt32(static_cast<UInt32>(Ocelot.GetOcelotType()));
break;
} // case mtOcelot
case mtPig:
{
auto & Pig = reinterpret_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());
// PIG_TOTAL_CARROT_ON_A_STICK_BOOST in 1.11.1 only
break;
} // case mtPig
case mtRabbit:
{
auto & Rabbit = reinterpret_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 = reinterpret_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:
{
// XXX Skeletons are separate entities; all skeletons are currently treated as regular ones
// auto & Skeleton = reinterpret_cast<const cSkeleton &>(a_Mob);
// a_Pkt.WriteBEUInt8(SKELETON_TYPE);
// a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
// a_Pkt.WriteVarInt32(Skeleton.IsWither() ? 1 : 0);
break;
} // case mtSkeleton
case mtSlime:
{
auto & Slime = reinterpret_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 = reinterpret_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 = reinterpret_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 = reinterpret_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 mtWolf:
{
auto & Wolf = reinterpret_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 mtZombie:
{
// XXX Zombies were also split into new sublcasses; this doesn't handle that.
auto & Zombie = reinterpret_cast<const cZombie &>(a_Mob);
a_Pkt.WriteBEUInt8(ZOMBIE_IS_BABY);
a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
a_Pkt.WriteBool(Zombie.IsBaby());
// These don't exist
// a_Pkt.WriteBEUInt8(ZOMBIE_TYPE);
// a_Pkt.WriteBEUInt8(METADATA_TYPE_VARINT);
// a_Pkt.WriteVarInt32(Zombie.IsVillagerZombie() ? 1 : 0);
// a_Pkt.WriteBEUInt8(ZOMBIE_CONVERTING);
// a_Pkt.WriteBEUInt8(METADATA_TYPE_BOOL);
// a_Pkt.WriteBool(Zombie.IsConverting());
break;
} // case mtZombie
case mtZombiePigman:
{
auto & ZombiePigman = reinterpret_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 mtBlaze:
case mtEnderDragon:
case mtGuardian:
case mtIronGolem:
case mtSnowGolem:
case mtSpider:
{
// TODO: Mobs with extra fields that aren't implemented
break;
}
case mtMooshroom:
case mtCaveSpider:
{
// Not mentioned on http://wiki.vg/Entities
break;
}
case mtGiant:
case mtSilverfish:
case mtSquid:
{
// Mobs with no extra fields
break;
}
case mtInvalidType:
{
ASSERT(!"cProtocol_1_12::WriteMobMetadata: Recieved mob of invalid type");
break;
}
} // switch (a_Mob.GetType())
}
void cProtocol_1_12::HandlePacketCraftingBookData(cByteBuffer & a_ByteBuffer)
{
a_ByteBuffer.SkipRead(a_ByteBuffer.GetReadableSpace() - 1);
m_Client->GetPlayer()->SendMessageInfo("The green crafting book feature is not implemented yet.");
}
void cProtocol_1_12::HandlePacketAdvancementTab(cByteBuffer & a_ByteBuffer)
{
a_ByteBuffer.SkipRead(a_ByteBuffer.GetReadableSpace() - 1);
m_Client->GetPlayer()->SendMessageInfo("The new advancements are not implemented.");
}
void cProtocol_1_12::SendTitleTimes(int a_FadeInTicks, int a_DisplayTicks, int a_FadeOutTicks)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, GetPacketId(sendTitle)); // Title packet
Pkt.WriteVarInt32(3); // Set title display times
Pkt.WriteBEInt32(a_FadeInTicks);
Pkt.WriteBEInt32(a_DisplayTicks);
Pkt.WriteBEInt32(a_FadeOutTicks);
}
void cProtocol_1_12::SendHideTitle(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, GetPacketId(sendTitle)); // Title packet
Pkt.WriteVarInt32(4); // Hide title
}
void cProtocol_1_12::SendResetTitle(void)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, GetPacketId(sendTitle)); // Title packet
Pkt.WriteVarInt32(5); // Reset title
}
void cProtocol_1_12::SendCollectEntity(const cEntity & a_Entity, const cPlayer & a_Player, int a_Count)
{
ASSERT(m_State == 3); // In game mode?
cPacketizer Pkt(*this, GetPacketId(sendCollectEntity)); // Collect Item packet
Pkt.WriteVarInt32(a_Entity.GetUniqueID());
Pkt.WriteVarInt32(a_Player.GetUniqueID());
Pkt.WriteVarInt32(static_cast<UInt32>(a_Count));
}
bool cProtocol_1_12::HandlePacket(cByteBuffer & a_ByteBuffer, UInt32 a_PacketType)
{
switch (m_State)
{
case 1:
{
// Status
switch (a_PacketType)
{
case 0x00: HandlePacketStatusRequest(a_ByteBuffer); return true;
case 0x01: HandlePacketStatusPing(a_ByteBuffer); return true;
}
break;
}
case 2:
{
// Login
switch (a_PacketType)
{
case 0x00: HandlePacketLoginStart(a_ByteBuffer); return true;
case 0x01: HandlePacketLoginEncryptionResponse(a_ByteBuffer); return true;
}
break;
}
case 3:
{
// Game
switch (a_PacketType)
{
case 0x00: HandleConfirmTeleport(a_ByteBuffer); return true;
case 0x01: break; // Prepare Crafting Grid, not yet implemented
case 0x02: HandlePacketTabComplete(a_ByteBuffer); return true;
case 0x03: HandlePacketChatMessage(a_ByteBuffer); return true;
case 0x04: HandlePacketClientStatus(a_ByteBuffer); return true;
case 0x05: HandlePacketClientSettings(a_ByteBuffer); return true;
case 0x06: break; // Confirm transaction - not used in Cuberite
case 0x07: HandlePacketEnchantItem(a_ByteBuffer); return true;
case 0x08: HandlePacketWindowClick(a_ByteBuffer); return true;
case 0x09: HandlePacketWindowClose(a_ByteBuffer); return true;
case 0x0a: HandlePacketPluginMessage(a_ByteBuffer); return true;
case 0x0b: HandlePacketUseEntity(a_ByteBuffer); return true;
case 0x0c: HandlePacketKeepAlive(a_ByteBuffer); return true;
case 0x0d: HandlePacketPlayer(a_ByteBuffer); return true;
case 0x0e: HandlePacketPlayerPos(a_ByteBuffer); return true;
case 0x0f: HandlePacketPlayerPosLook(a_ByteBuffer); return true;
case 0x10: HandlePacketPlayerLook(a_ByteBuffer); return true;
case 0x11: HandlePacketVehicleMove(a_ByteBuffer); return true;
case 0x12: HandlePacketBoatSteer(a_ByteBuffer); return true;
case 0x13: HandlePacketPlayerAbilities(a_ByteBuffer); return true;
case 0x14: HandlePacketBlockDig(a_ByteBuffer); return true;
case 0x15: HandlePacketEntityAction(a_ByteBuffer); return true;
case 0x16: HandlePacketSteerVehicle(a_ByteBuffer); return true;
case 0x17: HandlePacketCraftingBookData(a_ByteBuffer); return true;
case 0x18: break; // Resource pack status - not yet implemented
case 0x19: HandlePacketAdvancementTab(a_ByteBuffer); return true;
case 0x1a: HandlePacketSlotSelect(a_ByteBuffer); return true;
case 0x1b: HandlePacketCreativeInventoryAction(a_ByteBuffer); return true;
case 0x1c: HandlePacketUpdateSign(a_ByteBuffer); return true;
case 0x1d: HandlePacketAnimation(a_ByteBuffer); return true;
case 0x1e: HandlePacketSpectate(a_ByteBuffer); return true;
case 0x1f: HandlePacketBlockPlace(a_ByteBuffer); return true;
case 0x20: HandlePacketUseItem(a_ByteBuffer); return true;
}
break;
}
default:
{
// Received a packet in an unknown state, report:
LOGWARNING("Received a packet in an unknown protocol state %d. Ignoring further packets.", m_State);
// Cannot kick the client - we don't know this state and thus the packet number for the kick packet
// Switch to a state when all further packets are silently ignored:
m_State = 255;
return false;
}
case 255:
{
// This is the state used for "not processing packets anymore" when we receive a bad packet from a client.
// Do not output anything (the caller will do that for us), just return failure
return false;
}
} // switch (m_State)
// Unknown packet type, report to the ClientHandle:
m_Client->PacketUnknown(a_PacketType);
return false;
}
cProtocol_1_12_1::cProtocol_1_12_1(cClientHandle * a_Client, const AString & a_ServerAddress, UInt16 a_ServerPort, UInt32 a_State) :
super(a_Client, a_ServerAddress, a_ServerPort, a_State)
{
}
void cProtocol_1_12_1::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
{
cServer * Server = cRoot::Get()->GetServer();
AString ServerDescription = Server->GetDescription();
auto NumPlayers = static_cast<signed>(Server->GetNumPlayers());
auto MaxPlayers = static_cast<signed>(Server->GetMaxPlayers());
AString Favicon = Server->GetFaviconData();
cRoot::Get()->GetPluginManager()->CallHookServerPing(*m_Client, ServerDescription, NumPlayers, MaxPlayers, Favicon);
// Version:
Json::Value Version;
Version["name"] = "Cuberite 1.12.1";
Version["protocol"] = cProtocolRecognizer::PROTO_VERSION_1_12_1;
// Players:
Json::Value Players;
Players["online"] = NumPlayers;
Players["max"] = MaxPlayers;
// TODO: Add "sample"
// Description:
Json::Value Description;
Description["text"] = ServerDescription.c_str();
// Create the response:
Json::Value ResponseValue;
ResponseValue["version"] = Version;
ResponseValue["players"] = Players;
ResponseValue["description"] = Description;
if (!Favicon.empty())
{
ResponseValue["favicon"] = Printf("data:image/png;base64,%s", Favicon.c_str());
}
// Serialize the response into a packet:
Json::FastWriter Writer;
cPacketizer Pkt(*this, 0x00); // Response packet
Pkt.WriteString(Writer.write(ResponseValue));
}
bool cProtocol_1_12_1::HandlePacket(cByteBuffer & a_ByteBuffer, UInt32 a_PacketType)
{
switch (m_State)
{
case 1:
{
// Status
switch (a_PacketType)
{
case 0x00: HandlePacketStatusRequest(a_ByteBuffer); return true;
case 0x01: HandlePacketStatusPing(a_ByteBuffer); return true;
}
break;
}
case 2:
{
// Login
switch (a_PacketType)
{
case 0x00: HandlePacketLoginStart(a_ByteBuffer); return true;
case 0x01: HandlePacketLoginEncryptionResponse(a_ByteBuffer); return true;
}
break;
}
case 3:
{
// Game
switch (a_PacketType)
{
case 0x00: HandleConfirmTeleport(a_ByteBuffer); return true;
case 0x01: HandlePacketTabComplete(a_ByteBuffer); return true;
case 0x02: HandlePacketChatMessage(a_ByteBuffer); return true;
case 0x03: HandlePacketClientStatus(a_ByteBuffer); return true;
case 0x04: HandlePacketClientSettings(a_ByteBuffer); return true;
case 0x05: break; // Confirm transaction - not used in Cuberite
case 0x06: HandlePacketEnchantItem(a_ByteBuffer); return true;
case 0x07: HandlePacketWindowClick(a_ByteBuffer); return true;
case 0x08: HandlePacketWindowClose(a_ByteBuffer); return true;
case 0x09: HandlePacketPluginMessage(a_ByteBuffer); return true;
case 0x0a: HandlePacketUseEntity(a_ByteBuffer); return true;
case 0x0b: HandlePacketKeepAlive(a_ByteBuffer); return true;
case 0x0c: HandlePacketPlayer(a_ByteBuffer); return true;
case 0x0d: HandlePacketPlayerPos(a_ByteBuffer); return true;
case 0x0e: HandlePacketPlayerPosLook(a_ByteBuffer); return true;
case 0x0f: HandlePacketPlayerLook(a_ByteBuffer); return true;
case 0x10: HandlePacketVehicleMove(a_ByteBuffer); return true;
case 0x11: HandlePacketBoatSteer(a_ByteBuffer); return true;
case 0x12: break; // Craft Recipe Request - not yet implemented
case 0x13: HandlePacketPlayerAbilities(a_ByteBuffer); return true;
case 0x14: HandlePacketBlockDig(a_ByteBuffer); return true;
case 0x15: HandlePacketEntityAction(a_ByteBuffer); return true;
case 0x16: HandlePacketSteerVehicle(a_ByteBuffer); return true;
case 0x17: HandlePacketCraftingBookData(a_ByteBuffer); return true;
case 0x18: break; // Resource pack status - not yet implemented
case 0x19: HandlePacketAdvancementTab(a_ByteBuffer); return true;
case 0x1a: HandlePacketSlotSelect(a_ByteBuffer); return true;
case 0x1b: HandlePacketCreativeInventoryAction(a_ByteBuffer); return true;
case 0x1c: HandlePacketUpdateSign(a_ByteBuffer); return true;
case 0x1d: HandlePacketAnimation(a_ByteBuffer); return true;
case 0x1e: HandlePacketSpectate(a_ByteBuffer); return true;
case 0x1f: HandlePacketBlockPlace(a_ByteBuffer); return true;
case 0x20: HandlePacketUseItem(a_ByteBuffer); return true;
}
break;
}
default:
{
// Received a packet in an unknown state, report:
LOGWARNING("Received a packet in an unknown protocol state %d. Ignoring further packets.", m_State);
// Cannot kick the client - we don't know this state and thus the packet number for the kick packet
// Switch to a state when all further packets are silently ignored:
m_State = 255;
return false;
}
case 255:
{
// This is the state used for "not processing packets anymore" when we receive a bad packet from a client.
// Do not output anything (the caller will do that for us), just return failure
return false;
}
} // switch (m_State)
// Unknown packet type, report to the ClientHandle:
m_Client->PacketUnknown(a_PacketType);
return false;
}
////////////////////////////////////////////////////////////////////////////////
// cProtocol_1_12_2:
void cProtocol_1_12_2::HandlePacketKeepAlive(cByteBuffer & a_ByteBuffer)
{
HANDLE_READ(a_ByteBuffer, ReadBEInt64, Int64, KeepAliveID);
if (
(KeepAliveID <= std::numeric_limits<UInt32>::max()) &&
(KeepAliveID >= 0)
)
{
// The server will only send a UInt32 so any value out of that range shouldn't keep the client alive.
m_Client->HandleKeepAlive(static_cast<UInt32>(KeepAliveID));
}
}
void cProtocol_1_12_2::HandlePacketStatusRequest(cByteBuffer & a_ByteBuffer)
{
cServer * Server = cRoot::Get()->GetServer();
AString ServerDescription = Server->GetDescription();
auto NumPlayers = static_cast<signed>(Server->GetNumPlayers());
auto MaxPlayers = static_cast<signed>(Server->GetMaxPlayers());
AString Favicon = Server->GetFaviconData();
cRoot::Get()->GetPluginManager()->CallHookServerPing(*m_Client, ServerDescription, NumPlayers, MaxPlayers, Favicon);
// Version:
Json::Value Version;
Version["name"] = "Cuberite 1.12.2";
Version["protocol"] = cProtocolRecognizer::PROTO_VERSION_1_12_2;
// Players:
Json::Value Players;
Players["online"] = NumPlayers;
Players["max"] = MaxPlayers;
// TODO: Add "sample"
// Description:
Json::Value Description;
Description["text"] = ServerDescription.c_str();
// Create the response:
Json::Value ResponseValue;
ResponseValue["version"] = Version;
ResponseValue["players"] = Players;
ResponseValue["description"] = Description;
if (!Favicon.empty())
{
ResponseValue["favicon"] = Printf("data:image/png;base64,%s", Favicon.c_str());
}
// Serialize the response into a packet:
Json::FastWriter Writer;
cPacketizer Pkt(*this, 0x00); // Response packet
Pkt.WriteString(Writer.write(ResponseValue));
}
void cProtocol_1_12_2::SendKeepAlive(UInt32 a_PingID)
{
// Drop the packet if the protocol is not in the Game state yet (caused a client crash):
if (m_State != 3)
{
LOGWARNING("Trying to send a KeepAlive packet to a player who's not yet fully logged in (%d). The protocol class prevented the packet.", m_State);
return;
}
cPacketizer Pkt(*this, GetPacketId(sendKeepAlive)); // Keep Alive packet
Pkt.WriteBEInt64(a_PingID);
}
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