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cuberite-2a/src/ClientHandle.cpp

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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "ClientHandle.h"
#include "BlockInfo.h"
#include "Server.h"
#include "World.h"
#include "Chunk.h"
#include "Entities/Pickup.h"
#include "Bindings/PluginManager.h"
#include "Entities/Player.h"
#include "Entities/Minecart.h"
#include "Inventory.h"
#include "BlockEntities/BeaconEntity.h"
#include "BlockEntities/ChestEntity.h"
#include "BlockEntities/CommandBlockEntity.h"
#include "BlockEntities/SignEntity.h"
#include "UI/Window.h"
#include "UI/AnvilWindow.h"
#include "UI/BeaconWindow.h"
#include "UI/EnchantingWindow.h"
#include "Item.h"
#include "Mobs/Monster.h"
#include "ChatColor.h"
#include "Items/ItemHandler.h"
#include "Blocks/BlockHandler.h"
#include "Blocks/BlockBed.h"
#include "Blocks/ChunkInterface.h"
#include "BlockInServerPluginInterface.h"
#include "Root.h"
#include "Protocol/Authenticator.h"
#include "Protocol/ProtocolRecognizer.h"
#include "CompositeChat.h"
#include "Items/ItemSword.h"
#include "mbedtls/md5.h"
/** Maximum number of explosions to send this tick, server will start dropping if exceeded */
#define MAX_EXPLOSIONS_PER_TICK 20
/** Maximum number of block change interactions a player can perform per tick - exceeding this causes a kick */
#define MAX_BLOCK_CHANGE_INTERACTIONS 20
/** Maximum number of bytes that a chat message sent by a player may consist of */
#define MAX_CHAT_MSG_LENGTH 1024
/** The interval for sending pings to clients.
Vanilla sends one ping every 1 second. */
static const std::chrono::milliseconds PING_TIME_MS = std::chrono::milliseconds(1000);
int cClientHandle::s_ClientCount = 0;
float cClientHandle::FASTBREAK_PERCENTAGE;
////////////////////////////////////////////////////////////////////////////////
// cClientHandle:
cClientHandle::cClientHandle(const AString & a_IPString, int a_ViewDistance) :
m_LastSentDimension(dimNotSet),
m_ForgeHandshake(this),
m_CurrentViewDistance(a_ViewDistance),
m_RequestedViewDistance(a_ViewDistance),
m_IPString(a_IPString),
m_Player(nullptr),
m_CachedSentChunk(0, 0),
m_HasSentDC(false),
m_LastStreamedChunkX(0x7fffffff), // bogus chunk coords to force streaming upon login
m_LastStreamedChunkZ(0x7fffffff),
m_TicksSinceLastPacket(0),
m_Ping(1000),
m_PingID(1),
m_BlockDigAnimStage(-1),
m_BlockDigAnimSpeed(0),
m_BlockDigAnimX(0),
m_BlockDigAnimY(cChunkDef::Height + 1), // Invalid Y, so that the coords don't get picked up
m_BlockDigAnimZ(0),
m_HasStartedDigging(false),
m_LastDigBlockX(0),
m_LastDigBlockY(cChunkDef::Height + 1), // Invalid Y, so that the coords don't get picked up
m_LastDigBlockZ(0),
m_State(csConnected),
m_ShouldCheckDownloaded(false),
m_NumExplosionsThisTick(0),
m_NumBlockChangeInteractionsThisTick(0),
m_UniqueID(0),
m_HasSentPlayerChunk(false),
m_Locale("en_GB"),
m_LastPlacedSign(0, -1, 0),
m_ProtocolVersion(0)
{
m_Protocol = cpp14::make_unique<cProtocolRecognizer>(this);
s_ClientCount++; // Not protected by CS because clients are always constructed from the same thread
m_UniqueID = s_ClientCount;
m_PingStartTime = std::chrono::steady_clock::now();
LOGD("New ClientHandle created at %p", static_cast<void *>(this));
}
cClientHandle::~cClientHandle()
{
ASSERT(m_State == csDestroyed); // Has Destroy() been called?
LOGD("Deleting client \"%s\" at %p", GetUsername().c_str(), static_cast<void *>(this));
{
cCSLock Lock(m_CSChunkLists);
m_LoadedChunks.clear();
m_ChunksToSend.clear();
}
if (m_Player != nullptr)
{
cWorld * World = m_Player->GetWorld();
if (World != nullptr)
{
RemoveFromAllChunks();
m_Player->GetWorld()->RemoveClientFromChunkSender(this);
m_Player->DestroyNoScheduling(true);
}
// Send the Offline PlayerList packet:
cRoot::Get()->BroadcastPlayerListsRemovePlayer(*m_Player);
m_PlayerPtr.reset();
m_Player = nullptr;
}
m_Protocol.reset();
LOGD("ClientHandle at %p deleted", static_cast<void *>(this));
}
void cClientHandle::Destroy(void)
{
{
cCSLock Lock(m_CSOutgoingData);
m_Link.reset();
}
if (!SetState(csDestroying))
{
// Already called
LOGD("%s: client %p, \"%s\" already destroyed, bailing out", __FUNCTION__, static_cast<void *>(this), m_Username.c_str());
return;
}
LOGD("%s: destroying client %p, \"%s\" @ %s", __FUNCTION__, static_cast<void *>(this), m_Username.c_str(), m_IPString.c_str());
auto player = m_Player;
auto Self = std::move(m_Self); // Keep ourself alive for at least as long as this function
SetState(csDestroyed);
if (player == nullptr)
{
return;
}
// Atomically decrement player count (in world or server thread)
cRoot::Get()->GetServer()->PlayerDestroyed();
auto world = player->GetWorld();
if (world != nullptr)
{
player->StopEveryoneFromTargetingMe();
player->SetIsTicking(false);
if (!m_PlayerPtr)
{
// If our own smart pointer is unset, player has been transferred to world
ASSERT(world->IsPlayerReferencedInWorldOrChunk(*player));
m_PlayerPtr = world->RemovePlayer(*player);
// And RemovePlayer should have returned a valid smart pointer
ASSERT(m_PlayerPtr);
}
else
{
// If ownership was not transferred, our own smart pointer should be valid and RemovePlayer's should not
ASSERT(!world->IsPlayerReferencedInWorldOrChunk(*player));
}
}
player->RemoveClientHandle();
}
void cClientHandle::GenerateOfflineUUID(void)
{
m_UUID = GenerateOfflineUUID(m_Username);
}
AString cClientHandle::FormatChatPrefix(
bool ShouldAppendChatPrefixes, const AString & a_ChatPrefixS,
const AString & m_Color1, const AString & m_Color2
)
{
if (ShouldAppendChatPrefixes)
{
return Printf("%s[%s] %s", m_Color1.c_str(), a_ChatPrefixS.c_str(), m_Color2.c_str());
}
else
{
return Printf("%s", m_Color1.c_str());
}
}
AString cClientHandle::FormatMessageType(bool ShouldAppendChatPrefixes, eMessageType a_ChatPrefix, const AString & a_AdditionalData)
{
switch (a_ChatPrefix)
{
case mtCustom: return "";
case mtFailure: return FormatChatPrefix(ShouldAppendChatPrefixes, "INFO", cChatColor::Rose, cChatColor::White);
case mtInformation: return FormatChatPrefix(ShouldAppendChatPrefixes, "INFO", cChatColor::Yellow, cChatColor::White);
case mtSuccess: return FormatChatPrefix(ShouldAppendChatPrefixes, "INFO", cChatColor::Green, cChatColor::White);
case mtWarning: return FormatChatPrefix(ShouldAppendChatPrefixes, "WARN", cChatColor::Rose, cChatColor::White);
case mtFatal: return FormatChatPrefix(ShouldAppendChatPrefixes, "FATAL", cChatColor::Red, cChatColor::White);
case mtDeath: return FormatChatPrefix(ShouldAppendChatPrefixes, "DEATH", cChatColor::Gray, cChatColor::White);
case mtJoin: return FormatChatPrefix(ShouldAppendChatPrefixes, "JOIN", cChatColor::Yellow, cChatColor::White);
case mtLeave: return FormatChatPrefix(ShouldAppendChatPrefixes, "LEAVE", cChatColor::Yellow, cChatColor::White);
case mtPrivateMessage:
{
if (ShouldAppendChatPrefixes)
{
return Printf("%s[MSG: %s] %s%s", cChatColor::LightBlue, a_AdditionalData.c_str(), cChatColor::White, cChatColor::Italic);
}
else
{
return Printf("%s: %s", a_AdditionalData.c_str(), cChatColor::LightBlue);
}
}
case mtMaxPlusOne: break;
}
return "";
}
cUUID cClientHandle::GenerateOfflineUUID(const AString & a_Username)
{
// Online UUIDs are always version 4 (random)
// We use Version 3 (MD5 hash) UUIDs for the offline UUIDs
// This guarantees that they will never collide with an online UUID and can be distinguished.
// This is also consistent with the vanilla offline UUID scheme.
return cUUID::GenerateVersion3("OfflinePlayer:" + a_Username);
}
bool cClientHandle::IsUUIDOnline(const cUUID & a_UUID)
{
// Online UUIDs are always version 4 (random)
// We use Version 3 (MD5 hash) UUIDs for the offline UUIDs
// This guarantees that they will never collide with an online UUID and can be distinguished.
return (a_UUID.Version() == 4);
}
void cClientHandle::Kick(const AString & a_Reason)
{
if (m_State >= csAuthenticating) // Don't log pings
{
LOGINFO("Kicking player %s for \"%s\"", m_Username.c_str(), StripColorCodes(a_Reason).c_str());
}
SendDisconnect(a_Reason);
}
void cClientHandle::Authenticate(const AString & a_Name, const cUUID & a_UUID, const Json::Value & a_Properties)
{
// Atomically increment player count (in server thread)
cRoot::Get()->GetServer()->PlayerCreated();
{
cCSLock lock(m_CSState);
/*
LOGD("Processing authentication for client %s @ %s (%p), state = %d",
m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this), m_State.load()
);
//*/
if (m_State != csAuthenticating)
{
return;
}
ASSERT(m_Player == nullptr);
m_Username = a_Name;
// Only assign UUID and properties if not already pre-assigned (BungeeCord sends those in the Handshake packet):
if (m_UUID.IsNil())
{
m_UUID = a_UUID;
}
if (m_Properties.empty())
{
m_Properties = a_Properties;
}
// Send login success (if the protocol supports it):
m_Protocol->SendLoginSuccess();
if (m_ForgeHandshake.m_IsForgeClient)
{
m_ForgeHandshake.BeginForgeHandshake(a_Name, a_UUID, a_Properties);
}
else
{
FinishAuthenticate(a_Name, a_UUID, a_Properties);
}
}
}
void cClientHandle::FinishAuthenticate(const AString & a_Name, const cUUID & a_UUID, const Json::Value & a_Properties)
{
cWorld * World;
{
// Spawn player (only serversided, so data is loaded)
m_PlayerPtr = cpp14::make_unique<cPlayer>(m_Self, GetUsername());
m_Player = m_PlayerPtr.get();
/*
LOGD("Created a new cPlayer object at %p for client %s @ %s (%p)",
static_cast<void *>(m_Player),
m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this)
);
//*/
InvalidateCachedSentChunk();
m_Self.reset();
// New player use default world
// Player who can load from disk, use loaded world
if (m_Player->GetWorld() == nullptr)
{
World = cRoot::Get()->GetWorld(m_Player->GetLoadedWorldName());
if (World == nullptr)
{
World = cRoot::Get()->GetDefaultWorld();
m_Player->SetPosition(World->GetSpawnX(), World->GetSpawnY(), World->GetSpawnZ());
}
m_Player->SetWorld(World);
}
else
{
World = m_Player->GetWorld();
}
m_Player->SetIP (m_IPString);
if (!cRoot::Get()->GetPluginManager()->CallHookPlayerJoined(*m_Player))
{
cRoot::Get()->BroadcastChatJoin(Printf("%s has joined the game", GetUsername().c_str()));
LOGINFO("Player %s has joined the game", m_Username.c_str());
}
m_ConfirmPosition = m_Player->GetPosition();
// Return a server login packet
m_Protocol->SendLogin(*m_Player, *World);
m_LastSentDimension = World->GetDimension();
// Send Weather if raining:
if ((World->GetWeather() == 1) || (World->GetWeather() == 2))
{
m_Protocol->SendWeather(World->GetWeather());
}
// Send time:
m_Protocol->SendTimeUpdate(World->GetWorldAge(), World->GetTimeOfDay(), World->IsDaylightCycleEnabled());
// Send contents of the inventory window
m_Protocol->SendWholeInventory(*m_Player->GetWindow());
// Send health
m_Player->SendHealth();
// Send experience
m_Player->SendExperience();
// Send hotbar active slot
m_Player->SendHotbarActiveSlot();
// Send player list items
SendPlayerListAddPlayer(*m_Player);
cRoot::Get()->BroadcastPlayerListsAddPlayer(*m_Player);
cRoot::Get()->SendPlayerLists(m_Player);
SetState(csAuthenticated);
}
// Query player team
m_Player->UpdateTeam();
// Send scoreboard data
World->GetScoreBoard().SendTo(*this);
// Send statistics
SendStatistics(m_Player->GetStatManager());
// Delay the first ping until the client "settles down"
// This should fix #889, "BadCast exception, cannot convert bit to fm" error in client
m_PingStartTime = std::chrono::steady_clock::now() + std::chrono::seconds(3); // Send the first KeepAlive packet in 3 seconds
cRoot::Get()->GetPluginManager()->CallHookPlayerSpawned(*m_Player);
// LOGD("Client %s @ %s (%p) has been fully authenticated", m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this));
}
bool cClientHandle::StreamNextChunk(void)
{
if ((m_State < csAuthenticated) || (m_State >= csDestroying))
{
return true;
}
ASSERT(m_Player != nullptr);
int ChunkPosX = m_Player->GetChunkX();
int ChunkPosZ = m_Player->GetChunkZ();
if ((m_LastStreamedChunkX == ChunkPosX) && (m_LastStreamedChunkZ == ChunkPosZ))
{
// All chunks are already loaded. Abort loading.
return true;
}
// Get the look vector and normalize it.
Vector3d Position = m_Player->GetEyePosition();
Vector3d LookVector = m_Player->GetLookVector();
LookVector.Normalize();
// Lock the list
cCSLock Lock(m_CSChunkLists);
// High priority: Load the chunks that are in the view-direction of the player (with a radius of 3)
for (int Range = 0; Range < m_CurrentViewDistance; Range++)
{
Vector3d Vector = Position + LookVector * cChunkDef::Width * Range;
// Get the chunk from the x / z coords.
int RangeX, RangeZ = 0;
cChunkDef::BlockToChunk(FloorC(Vector.x), FloorC(Vector.z), RangeX, RangeZ);
for (int X = 0; X < 7; X++)
{
for (int Z = 0; Z < 7; Z++)
{
int ChunkX = RangeX + ((X >= 4) ? (3 - X) : X);
int ChunkZ = RangeZ + ((Z >= 4) ? (3 - Z) : Z);
cChunkCoords Coords(ChunkX, ChunkZ);
// Checks if the chunk is in distance
if ((Diff(ChunkX, ChunkPosX) > m_CurrentViewDistance) || (Diff(ChunkZ, ChunkPosZ) > m_CurrentViewDistance))
{
continue;
}
// If the chunk already loading / loaded -> skip
if (
(m_ChunksToSend.find(Coords) != m_ChunksToSend.end()) ||
(m_LoadedChunks.find(Coords) != m_LoadedChunks.end())
)
{
continue;
}
// Unloaded chunk found -> Send it to the client.
Lock.Unlock();
StreamChunk(ChunkX, ChunkZ, ((Range <= 2) ? cChunkSender::E_CHUNK_PRIORITY_HIGH : cChunkSender::E_CHUNK_PRIORITY_MEDIUM));
return false;
}
}
}
// Low priority: Add all chunks that are in range. (From the center out to the edge)
for (int d = 0; d <= m_CurrentViewDistance; ++d) // cycle through (square) distance, from nearest to furthest
{
// For each distance add chunks in a hollow square centered around current position:
cChunkCoordsList CurcleChunks;
for (int i = -d; i <= d; ++i)
{
CurcleChunks.push_back(cChunkCoords(ChunkPosX + d, ChunkPosZ + i));
CurcleChunks.push_back(cChunkCoords(ChunkPosX - d, ChunkPosZ + i));
}
for (int i = -d + 1; i < d; ++i)
{
CurcleChunks.push_back(cChunkCoords(ChunkPosX + i, ChunkPosZ + d));
CurcleChunks.push_back(cChunkCoords(ChunkPosX + i, ChunkPosZ - d));
}
// For each the CurcleChunks list and send the first unloaded chunk:
for (cChunkCoordsList::iterator itr = CurcleChunks.begin(), end = CurcleChunks.end(); itr != end; ++itr)
{
cChunkCoords Coords = *itr;
// If the chunk already loading / loaded -> skip
if (
(m_ChunksToSend.find(Coords) != m_ChunksToSend.end()) ||
(m_LoadedChunks.find(Coords) != m_LoadedChunks.end())
)
{
continue;
}
// Unloaded chunk found -> Send it to the client.
Lock.Unlock();
StreamChunk(Coords.m_ChunkX, Coords.m_ChunkZ, cChunkSender::E_CHUNK_PRIORITY_LOW);
return false;
}
}
// All chunks are loaded -> Sets the last loaded chunk coordinates to current coordinates
m_LastStreamedChunkX = ChunkPosX;
m_LastStreamedChunkZ = ChunkPosZ;
return true;
}
void cClientHandle::UnloadOutOfRangeChunks(void)
{
int ChunkPosX = FAST_FLOOR_DIV(static_cast<int>(m_Player->GetPosX()), cChunkDef::Width);
int ChunkPosZ = FAST_FLOOR_DIV(static_cast<int>(m_Player->GetPosZ()), cChunkDef::Width);
cChunkCoordsList ChunksToRemove;
{
cCSLock Lock(m_CSChunkLists);
for (auto itr = m_LoadedChunks.begin(); itr != m_LoadedChunks.end();)
{
int DiffX = Diff((*itr).m_ChunkX, ChunkPosX);
int DiffZ = Diff((*itr).m_ChunkZ, ChunkPosZ);
if ((DiffX > m_CurrentViewDistance) || (DiffZ > m_CurrentViewDistance))
{
ChunksToRemove.push_back(*itr);
itr = m_LoadedChunks.erase(itr);
}
else
{
++itr;
}
}
for (auto itr = m_ChunksToSend.begin(); itr != m_ChunksToSend.end();)
{
int DiffX = Diff((*itr).m_ChunkX, ChunkPosX);
int DiffZ = Diff((*itr).m_ChunkZ, ChunkPosZ);
if ((DiffX > m_CurrentViewDistance) || (DiffZ > m_CurrentViewDistance))
{
itr = m_ChunksToSend.erase(itr);
}
else
{
++itr;
}
}
}
for (cChunkCoordsList::iterator itr = ChunksToRemove.begin(); itr != ChunksToRemove.end(); ++itr)
{
m_Player->GetWorld()->RemoveChunkClient(itr->m_ChunkX, itr->m_ChunkZ, this);
SendUnloadChunk(itr->m_ChunkX, itr->m_ChunkZ);
}
}
void cClientHandle::StreamChunk(int a_ChunkX, int a_ChunkZ, cChunkSender::eChunkPriority a_Priority)
{
if (m_State >= csDestroying)
{
// Don't stream chunks to clients that are being destroyed
return;
}
cWorld * World = m_Player->GetWorld();
ASSERT(World != nullptr);
if (World->AddChunkClient(a_ChunkX, a_ChunkZ, this))
{
{
cCSLock Lock(m_CSChunkLists);
m_LoadedChunks.emplace(a_ChunkX, a_ChunkZ);
m_ChunksToSend.emplace(a_ChunkX, a_ChunkZ);
}
World->SendChunkTo(a_ChunkX, a_ChunkZ, a_Priority, this);
}
}
void cClientHandle::RemoveFromAllChunks()
{
cWorld * World = m_Player->GetWorld();
if (World != nullptr)
{
World->RemoveClientFromChunks(this);
}
{
// Reset all chunk lists:
cCSLock Lock(m_CSChunkLists);
m_LoadedChunks.clear();
m_ChunksToSend.clear();
m_SentChunks.clear();
// Also reset the LastStreamedChunk coords to bogus coords,
// so that all chunks are streamed in subsequent StreamChunks() call (FS #407)
m_LastStreamedChunkX = 0x7fffffff;
m_LastStreamedChunkZ = 0x7fffffff;
}
}
void cClientHandle::HandleNPCTrade(int a_SlotNum)
{
// TODO
LOGWARNING("%s: Not implemented yet", __FUNCTION__);
}
void cClientHandle::HandleOpenHorseInventory(UInt32 a_EntityID)
{
if (m_Player->GetUniqueID() == a_EntityID)
{
m_Player->OpenHorseInventory();
}
}
void cClientHandle::HandlePing(void)
{
/* TODO: unused function, handles Legacy Server List Ping
http://wiki.vg/Protocol#Legacy_Server_List_Ping suggests that servers SHOULD handle this packet */
// Somebody tries to retrieve information about the server
AString Reply;
const cServer & Server = *cRoot::Get()->GetServer();
Printf(Reply, "%s%s%zu%s%zu",
Server.GetDescription().c_str(),
cChatColor::Delimiter,
Server.GetNumPlayers(),
cChatColor::Delimiter,
Server.GetMaxPlayers()
);
Kick(Reply);
}
bool cClientHandle::HandleLogin(const AString & a_Username)
{
{
cCSLock lock(m_CSState);
if (m_State != csConnected)
{
/*
LOGD("Client %s @ %s (%p, state %d) has disconnected before logging in, bailing out of login",
a_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this), m_State.load()
);
//*/
return false;
}
// LOGD("Handling login for client %s @ %s (%p), state = %d", a_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this), m_State.load());
m_Username = a_Username;
// Let the plugins know about this event, they may refuse the player:
if (cRoot::Get()->GetPluginManager()->CallHookLogin(*this, m_ProtocolVersion, a_Username))
{
SendDisconnect("Login Rejected!");
return false;
}
m_State = csAuthenticating;
} // lock(m_CSState)
// Schedule for authentication; until then, let the player wait (but do not block)
cRoot::Get()->GetAuthenticator().Authenticate(GetUniqueID(), GetUsername(), m_Protocol->GetAuthServerID());
return true;
}
void cClientHandle::HandleCreativeInventory(Int16 a_SlotNum, const cItem & a_HeldItem, eClickAction a_ClickAction)
{
// This is for creative Inventory changes
if (!m_Player->IsGameModeCreative())
{
LOGWARNING("Got a CreativeInventoryAction packet from user \"%s\" while not in creative mode. Ignoring.", m_Username.c_str());
return;
}
if (m_Player->GetWindow()->GetWindowType() != cWindow::wtInventory)
{
LOGWARNING("Got a CreativeInventoryAction packet from user \"%s\" while not in the inventory window. Ignoring.", m_Username.c_str());
return;
}
m_Player->GetWindow()->Clicked(*m_Player, 0, a_SlotNum, a_ClickAction, a_HeldItem);
}
void cClientHandle::HandleEnchantItem(UInt8 a_WindowID, UInt8 a_Enchantment)
{
if (a_Enchantment > 2)
{
LOGWARNING("%s attempt to crash the server with invalid enchanting selection (%u)!", GetUsername().c_str(), a_Enchantment);
Kick("Invalid enchanting!");
return;
}
if (
(m_Player->GetWindow() == nullptr) ||
(m_Player->GetWindow()->GetWindowID() != a_WindowID) ||
(m_Player->GetWindow()->GetWindowType() != cWindow::wtEnchantment)
)
{
return;
}
cEnchantingWindow * Window = static_cast<cEnchantingWindow *>(m_Player->GetWindow());
cItem Item = *Window->m_SlotArea->GetSlot(0, *m_Player); // Make a copy of the item
short BaseEnchantmentLevel = Window->GetPropertyValue(a_Enchantment);
if (Item.EnchantByXPLevels(BaseEnchantmentLevel))
{
if (m_Player->IsGameModeCreative() || m_Player->DeltaExperience(-m_Player->XpForLevel(BaseEnchantmentLevel)) >= 0)
{
Window->m_SlotArea->SetSlot(0, *m_Player, Item);
Window->SendSlot(*m_Player, Window->m_SlotArea, 0);
Window->BroadcastWholeWindow();
Window->SetProperty(0, 0, *m_Player);
Window->SetProperty(1, 0, *m_Player);
Window->SetProperty(2, 0, *m_Player);
}
}
}
void cClientHandle::HandlePlayerAbilities(bool a_CanFly, bool a_IsFlying, float FlyingSpeed, float WalkingSpeed)
{
UNUSED(FlyingSpeed); // Ignore the client values for these
UNUSED(WalkingSpeed);
m_Player->SetCanFly(a_CanFly);
m_Player->SetFlying(a_IsFlying);
}
void cClientHandle::HandlePlayerPos(double a_PosX, double a_PosY, double a_PosZ, double a_Stance, bool a_IsOnGround)
{
if ((m_Player == nullptr) || (m_State != csPlaying))
{
// The client hasn't been spawned yet and sends nonsense, we know better
return;
}
if (m_Player->IsFrozen())
{
// Ignore client-side updates if the player is frozen
return;
}
Vector3d NewPosition(a_PosX, a_PosY, a_PosZ);
Vector3d OldPosition = GetPlayer()->GetPosition();
double OldStance = GetPlayer()->GetStance();
auto PreviousIsOnGround = GetPlayer()->IsOnGround();
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wfloat-equal"
#endif
if (
(OldPosition == NewPosition) &&
(OldStance == a_Stance) &&
(PreviousIsOnGround == a_IsOnGround)
)
{
// Nothing changed, no need to do anything
return;
}
#ifdef __clang__
#pragma clang diagnostic pop
#endif
// If the player has moved too far, "repair" them:
if ((OldPosition - NewPosition).SqrLength() > 100 * 100)
{
LOGD("Too far away (%0.2f), \"repairing\" the client", (OldPosition - NewPosition).Length());
SendPlayerMoveLook();
return;
}
if (cRoot::Get()->GetPluginManager()->CallHookPlayerMoving(*m_Player, OldPosition, NewPosition, PreviousIsOnGround))
{
SendPlayerMoveLook();
return;
}
// TODO: should do some checks to see if player is not moving through terrain
// TODO: Official server refuses position packets too far away from each other, kicking "hacked" clients; we should, too
m_Player->SetPosition(NewPosition);
m_Player->SetStance(a_Stance);
m_Player->SetTouchGround(a_IsOnGround);
m_Player->UpdateMovementStats(NewPosition - OldPosition, PreviousIsOnGround);
}
void cClientHandle::HandlePluginMessage(const AString & a_Channel, const AString & a_Message)
{
if (a_Channel == "REGISTER")
{
if (HasPluginChannel(a_Channel))
{
SendPluginMessage("UNREGISTER", a_Channel);
return; // Can't register again if already taken - kinda defeats the point of plugin messaging!
}
RegisterPluginChannels(BreakApartPluginChannels(a_Message));
}
else if (a_Channel == "UNREGISTER")
{
UnregisterPluginChannels(BreakApartPluginChannels(a_Message));
}
else if (a_Channel == "FML|HS")
{
m_ForgeHandshake.DataReceived(this, a_Message.c_str(), a_Message.size());
}
else if (!HasPluginChannel(a_Channel))
{
// Ignore if client sent something but didn't register the channel first
LOGD("Player %s sent a plugin message on channel \"%s\", but didn't REGISTER it first", GetUsername().c_str(), a_Channel.c_str());
SendPluginMessage("UNREGISTER", a_Channel);
return;
}
cPluginManager::Get()->CallHookPluginMessage(*this, a_Channel, a_Message);
}
AStringVector cClientHandle::BreakApartPluginChannels(const AString & a_PluginChannels)
{
// Break the string on each NUL character.
// Note that StringSplit() doesn't work on this because NUL is a special char - string terminator
size_t len = a_PluginChannels.size();
size_t first = 0;
AStringVector res;
for (size_t i = 0; i < len; i++)
{
if (a_PluginChannels[i] != 0)
{
continue;
}
if (i > first)
{
res.push_back(a_PluginChannels.substr(first, i - first));
}
first = i + 1;
} // for i - a_PluginChannels[]
if (first < len)
{
res.push_back(a_PluginChannels.substr(first, len - first));
}
return res;
}
void cClientHandle::RegisterPluginChannels(const AStringVector & a_ChannelList)
{
for (AStringVector::const_iterator itr = a_ChannelList.begin(), end = a_ChannelList.end(); itr != end; ++itr)
{
m_PluginChannels.insert(*itr);
} // for itr - a_ChannelList[]
}
void cClientHandle::UnregisterPluginChannels(const AStringVector & a_ChannelList)
{
for (AStringVector::const_iterator itr = a_ChannelList.begin(), end = a_ChannelList.end(); itr != end; ++itr)
{
m_PluginChannels.erase(*itr);
} // for itr - a_ChannelList[]
}
void cClientHandle::HandleBeaconSelection(int a_PrimaryEffect, int a_SecondaryEffect)
{
cWindow * Window = m_Player->GetWindow();
if ((Window == nullptr) || (Window->GetWindowType() != cWindow::wtBeacon))
{
return;
}
cBeaconWindow * BeaconWindow = static_cast<cBeaconWindow *>(Window);
if (Window->GetSlot(*m_Player, 0)->IsEmpty())
{
return;
}
cEntityEffect::eType PrimaryEffect = cEntityEffect::effNoEffect;
if ((a_PrimaryEffect >= 0) && (a_PrimaryEffect <= static_cast<int>(cEntityEffect::effSaturation)))
{
PrimaryEffect = static_cast<cEntityEffect::eType>(a_PrimaryEffect);
}
cEntityEffect::eType SecondaryEffect = cEntityEffect::effNoEffect;
if ((a_SecondaryEffect >= 0) && (a_SecondaryEffect <= static_cast<int>(cEntityEffect::effSaturation)))
{
SecondaryEffect = static_cast<cEntityEffect::eType>(a_SecondaryEffect);
}
Window->SetSlot(*m_Player, 0, cItem());
BeaconWindow->GetBeaconEntity()->SetPrimaryEffect(PrimaryEffect);
// Valid effect check. Vanilla don't check this, but we do it :)
if (
(SecondaryEffect == cEntityEffect::effNoEffect) ||
(SecondaryEffect == cEntityEffect::effRegeneration) ||
(SecondaryEffect == BeaconWindow->GetBeaconEntity()->GetPrimaryEffect())
)
{
BeaconWindow->GetBeaconEntity()->SetSecondaryEffect(SecondaryEffect);
}
else
{
BeaconWindow->GetBeaconEntity()->SetSecondaryEffect(cEntityEffect::effNoEffect);
}
m_Player->CloseWindow(true);
}
void cClientHandle::HandleCommandBlockBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_NewCommand)
{
if (a_NewCommand.empty())
{
Kick("Command block string unexpectedly empty - hacked client?");
return;
}
cWorld * World = m_Player->GetWorld();
if (World->AreCommandBlocksEnabled())
{
World->SetCommandBlockCommand(a_BlockX, a_BlockY, a_BlockZ, a_NewCommand);
SendChat("Successfully set command block command", mtSuccess);
}
else
{
SendChat("Command blocks are not enabled on this server", mtFailure);
}
}
void cClientHandle::HandleCommandBlockEntityChange(UInt32 a_EntityID, const AString & a_NewCommand)
{
// TODO
LOGWARNING("%s: Not implemented yet", __FUNCTION__);
}
void cClientHandle::HandleAnvilItemName(const AString & a_ItemName)
{
if ((m_Player->GetWindow() == nullptr) || (m_Player->GetWindow()->GetWindowType() != cWindow::wtAnvil))
{
return;
}
if (a_ItemName.length() <= 30)
{
static_cast<cAnvilWindow *>(m_Player->GetWindow())->SetRepairedItemName(a_ItemName, m_Player);
}
}
void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, UInt8 a_Status)
{
FLOGD("HandleLeftClick: {0}; Face: {1}; Stat: {2}",
Vector3i{a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace, a_Status
);
m_NumBlockChangeInteractionsThisTick++;
if (!CheckBlockInteractionsRate())
{
Kick("Too many blocks were destroyed per unit time - hacked client?");
return;
}
if ((a_Status == DIG_STATUS_STARTED) || (a_Status == DIG_STATUS_FINISHED))
{
if (a_BlockFace == BLOCK_FACE_NONE)
{
return;
}
/* Check for clickthrough-blocks:
When the user breaks a fire block, the client send the wrong block location.
We must find the right block with the face direction. */
int BlockX = a_BlockX;
int BlockY = a_BlockY;
int BlockZ = a_BlockZ;
AddFaceDirection(BlockX, BlockY, BlockZ, a_BlockFace);
if (
cChunkDef::IsValidHeight(BlockY) &&
cBlockInfo::GetHandler(m_Player->GetWorld()->GetBlock(BlockX, BlockY, BlockZ))->IsClickedThrough()
)
{
a_BlockX = BlockX;
a_BlockY = BlockY;
a_BlockZ = BlockZ;
}
if (
((Diff(m_Player->GetPosX(), static_cast<double>(a_BlockX)) > 6) ||
(Diff(m_Player->GetPosY(), static_cast<double>(a_BlockY)) > 6) ||
(Diff(m_Player->GetPosZ(), static_cast<double>(a_BlockZ)) > 6))
)
{
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, *m_Player);
return;
}
}
cPluginManager * PlgMgr = cRoot::Get()->GetPluginManager();
if (m_Player->IsFrozen() || PlgMgr->CallHookPlayerLeftClick(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, static_cast<char>(a_Status)))
{
// A plugin doesn't agree with the action, replace the block on the client and quit:
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, *m_Player);
SendPlayerPosition(); // Prevents the player from falling through the block that was temporarily broken client side.
return;
}
switch (a_Status)
{
case DIG_STATUS_DROP_HELD: // Drop held item
{
if (PlgMgr->CallHookPlayerTossingItem(*m_Player))
{
// A plugin doesn't agree with the tossing. The plugin itself is responsible for handling the consequences (possible inventory mismatch)
return;
}
m_Player->TossEquippedItem();
return;
}
case DIG_STATUS_SHOOT_EAT:
{
cItemHandler * ItemHandler = cItemHandler::GetItemHandler(m_Player->GetEquippedItem());
if (ItemHandler->IsFood() || ItemHandler->IsDrinkable(m_Player->GetEquippedItem().m_ItemDamage))
{
m_Player->AbortEating();
return;
}
else
{
if (PlgMgr->CallHookPlayerShooting(*m_Player))
{
// A plugin doesn't agree with the action. The plugin itself is responsible for handling the consequences (possible inventory mismatch)
return;
}
// When bow is in off-hand / shield slot
if (m_Player->GetInventory().GetShieldSlot().m_ItemType == E_ITEM_BOW)
{
ItemHandler = cItemHandler::GetItemHandler(m_Player->GetInventory().GetShieldSlot());
}
ItemHandler->OnItemShoot(m_Player, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace);
}
return;
}
case DIG_STATUS_STARTED:
{
BLOCKTYPE OldBlock;
NIBBLETYPE OldMeta;
m_Player->GetWorld()->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, OldBlock, OldMeta);
HandleBlockDigStarted(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, OldBlock, OldMeta);
return;
}
case DIG_STATUS_FINISHED:
{
BLOCKTYPE OldBlock;
NIBBLETYPE OldMeta;
m_Player->GetWorld()->GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, OldBlock, OldMeta);
HandleBlockDigFinished(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, OldBlock, OldMeta);
return;
}
case DIG_STATUS_CANCELLED:
{
// Block breaking cancelled by player
FinishDigAnimation();
return;
}
case DIG_STATUS_DROP_STACK:
{
if (PlgMgr->CallHookPlayerTossingItem(*m_Player))
{
// A plugin doesn't agree with the tossing. The plugin itself is responsible for handling the consequences (possible inventory mismatch)
return;
}
m_Player->TossEquippedItem(64); // Toss entire slot - if there aren't enough items, the maximum will be ejected
return;
}
case DIG_STATUS_SWAP_ITEM_IN_HAND:
{
cItem EquippedItem = m_Player->GetEquippedItem();
cItem OffhandItem = m_Player->GetOffHandEquipedItem();
cInventory & Inventory = m_Player->GetInventory();
Inventory.SetShieldSlot(EquippedItem);
Inventory.SetEquippedItem(OffhandItem);
return;
}
default:
{
ASSERT(!"Unhandled DIG_STATUS");
return;
}
} // switch (a_Status)
}
void cClientHandle::HandleBlockDigStarted(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, BLOCKTYPE a_OldBlock, NIBBLETYPE a_OldMeta)
{
if (
m_HasStartedDigging &&
(a_BlockX == m_LastDigBlockX) &&
(a_BlockY == m_LastDigBlockY) &&
(a_BlockZ == m_LastDigBlockZ)
)
{
// It is a duplicate packet, drop it right away
return;
}
if (
m_Player->IsGameModeCreative() &&
ItemCategory::IsSword(m_Player->GetInventory().GetEquippedItem().m_ItemType) &&
(m_Player->GetWorld()->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_FIRE)
)
{
// Players can't destroy blocks with a sword in the hand.
return;
}
if (
(Diff(m_Player->GetPosX(), static_cast<double>(a_BlockX)) > 6) ||
(Diff(m_Player->GetPosY(), static_cast<double>(a_BlockY)) > 6) ||
(Diff(m_Player->GetPosZ(), static_cast<double>(a_BlockZ)) > 6)
)
{
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, *m_Player);
return;
}
// Set the last digging coords to the block being dug, so that they can be checked in DIG_FINISHED to avoid dig / aim bug in the client:
m_HasStartedDigging = true;
m_LastDigBlockX = a_BlockX;
m_LastDigBlockY = a_BlockY;
m_LastDigBlockZ = a_BlockZ;
if (
(m_Player->IsGameModeCreative()) || // In creative mode, digging is done immediately
cBlockInfo::IsOneHitDig(a_OldBlock) // One-hit blocks get destroyed immediately, too
)
{
HandleBlockDigFinished(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_OldBlock, a_OldMeta);
return;
}
m_BreakProgress = 0;
// Start dig animation
// TODO: calculate real animation speed
// TODO: Send animation packets even without receiving any other packets
m_BlockDigAnimSpeed = 10;
m_BlockDigAnimX = a_BlockX;
m_BlockDigAnimY = a_BlockY;
m_BlockDigAnimZ = a_BlockZ;
m_BlockDigAnimStage = 0;
m_Player->GetWorld()->BroadcastBlockBreakAnimation(static_cast<UInt32>(m_UniqueID), {m_BlockDigAnimX, m_BlockDigAnimY, m_BlockDigAnimZ}, 0, this);
cWorld * World = m_Player->GetWorld();
cChunkInterface ChunkInterface(World->GetChunkMap());
cBlockHandler * Handler = cBlockInfo::GetHandler(a_OldBlock);
Handler->OnDigging(ChunkInterface, *World, *m_Player, {a_BlockX, a_BlockY, a_BlockZ});
cItemHandler * ItemHandler = cItemHandler::GetItemHandler(m_Player->GetEquippedItem());
ItemHandler->OnDiggingBlock(World, m_Player, m_Player->GetEquippedItem(), {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace);
}
void cClientHandle::HandleBlockDigFinished(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, BLOCKTYPE a_OldBlock, NIBBLETYPE a_OldMeta)
{
if (
!m_HasStartedDigging || // Hasn't received the DIG_STARTED packet
(m_LastDigBlockX != a_BlockX) || // DIG_STARTED has had different pos
(m_LastDigBlockY != a_BlockY) ||
(m_LastDigBlockZ != a_BlockZ)
)
{
FLOGD("Prevented a dig / aim bug in the client (finish {0} vs start {1}, HSD: {2})",
Vector3i{a_BlockX, a_BlockY, a_BlockZ},
Vector3i{m_LastDigBlockX, m_LastDigBlockY, m_LastDigBlockZ},
(m_HasStartedDigging ? "True" : "False")
);
return;
}
FinishDigAnimation();
if (!m_Player->IsGameModeCreative())
{
if (a_OldBlock == E_BLOCK_BEDROCK)
{
Kick("You can't break a bedrock!");
return;
}
if (a_OldBlock == E_BLOCK_BARRIER)
{
Kick("You can't break a barrier!");
return;
}
}
if (!m_Player->IsGameModeCreative() && !cBlockInfo::IsOneHitDig(a_OldBlock))
{
// Fix for very fast tools.
m_BreakProgress += m_Player->GetPlayerRelativeBlockHardness(a_OldBlock);
if (m_BreakProgress < FASTBREAK_PERCENTAGE)
{
LOGD("Break progress of player %s was less than expected: %f < %f\n", m_Player->GetName().c_str(), m_BreakProgress * 100, FASTBREAK_PERCENTAGE * 100);
// AntiFastBreak doesn't agree with the breaking. Bail out. Send the block back to the client, so that it knows:
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, *m_Player);
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY + 1, a_BlockZ, *m_Player); // Strange bug with doors
SendPlayerPosition(); // Prevents the player from falling through the block that was temporarily broken client side.
m_Player->SendMessage("FastBreak?"); // TODO Anticheat hook
return;
}
}
cWorld * World = m_Player->GetWorld();
if (cRoot::Get()->GetPluginManager()->CallHookPlayerBreakingBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_OldBlock, a_OldMeta))
{
// A plugin doesn't agree with the breaking. Bail out. Send the block back to the client, so that it knows:
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, *m_Player);
m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY + 1, a_BlockZ, *m_Player); // Strange bug with doors
SendPlayerPosition(); // Prevents the player from falling through the block that was temporarily broken client side.
return;
}
if (a_OldBlock == E_BLOCK_AIR)
{
return;
}
m_Player->AddFoodExhaustion(0.025);
cChunkInterface ChunkInterface(World->GetChunkMap());
auto blockHandler = BlockHandler(a_OldBlock);
Vector3i absPos(a_BlockX, a_BlockY, a_BlockZ);
blockHandler->OnPlayerBreakingBlock(ChunkInterface, *World, *m_Player, absPos);
if (m_Player->IsGameModeSurvival())
{
World->DropBlockAsPickups(absPos, m_Player, &m_Player->GetEquippedItem());
}
else
{
World->DigBlock(absPos);
}
// Damage the tool:
auto dlAction = (cBlockInfo::IsOneHitDig(a_OldBlock) ? cItemHandler::dlaBreakBlockInstant : cItemHandler::dlaBreakBlock);
m_Player->UseEquippedItem(dlAction);
World->BroadcastSoundParticleEffect(EffectID::PARTICLE_SMOKE, absPos, a_OldBlock, this);
blockHandler->OnPlayerBrokeBlock(ChunkInterface, *World, *m_Player, absPos, a_OldBlock, a_OldMeta);
cRoot::Get()->GetPluginManager()->CallHookPlayerBrokenBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_OldBlock, a_OldMeta);
}
void cClientHandle::FinishDigAnimation()
{
if (!m_HasStartedDigging) // Hasn't received the DIG_STARTED packet
{
return;
}
m_HasStartedDigging = false;
if (m_BlockDigAnimStage != -1)
{
// End dig animation
m_BlockDigAnimStage = -1;
// It seems that 10 ends block animation
m_Player->GetWorld()->BroadcastBlockBreakAnimation(static_cast<UInt32>(m_UniqueID), {m_LastDigBlockX, m_LastDigBlockY, m_LastDigBlockZ}, 10, this);
}
m_BlockDigAnimX = -1;
m_BlockDigAnimY = -1;
m_BlockDigAnimZ = -1;
}
void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, eHand a_Hand)
{
// This function handles three actions:
// (1) Place a block;
// (2) "Use" a block: Interactive with the block, like opening a chest/crafting table/furnace;
// (3) Use the held item targeting a block. E.g. farming.
//
// Sneaking player will not use the block if hand is not empty.
// Frozen player can do nothing.
// In Game Mode Spectator, player cannot use item or place block, but can interactive with some block depending on cBlockInfo::IsUseableBySpectator(BlockType)
//
// If the action failed, we need to send an update of the placed block or inventory to the client.
//
// Actions rejected by plugin will not lead to other attempts.
// E.g., when opening a chest with a dirt in hand, if the plugin rejects opening the chest, the dirt will not be placed.
// TODO: We are still consuming the items in main hand. Remove this override when the off-hand consumption is handled correctly.
a_Hand = eHand::hMain;
const cItem & HeldItem = (a_Hand == eHand::hOff) ? m_Player->GetInventory().GetShieldSlot() : m_Player->GetEquippedItem();
cItemHandler * ItemHandler = cItemHandler::GetItemHandler(HeldItem.m_ItemType);
// TODO: This distance should be calculated from the point that the cursor pointing at, instead of the center of the block
// Distance from the block's center to the player's eye height
auto ClickedBlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
auto CursorPos = Vector3i(a_CursorX, a_CursorY, a_CursorZ);
double Dist = (Vector3d(ClickedBlockPos) + Vector3d(0.5, 0.5, 0.5) - m_Player->GetEyePosition()).Length();
FLOGD("HandleRightClick: {0}, face {1}, Cursor {2}, Hand: {3}, HeldItem: {4}; Dist: {5:.02f}",
ClickedBlockPos, a_BlockFace, CursorPos, a_Hand, ItemToFullString(HeldItem), Dist
);
// Check the reach distance:
// _X 2014-11-25: I've maxed at 5.26 with a Survival client and 5.78 with a Creative client in my tests
double MaxDist = m_Player->IsGameModeCreative() ? 5.78 : 5.26;
bool IsWithinReach = (Dist <= MaxDist);
cWorld * World = m_Player->GetWorld();
cPluginManager * PlgMgr = cRoot::Get()->GetPluginManager();
bool Success = false;
if (
!PlgMgr->CallHookPlayerRightClick(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ) &&
IsWithinReach && !m_Player->IsFrozen()
)
{
BLOCKTYPE BlockType;
NIBBLETYPE BlockMeta;
World->GetBlockTypeMeta(ClickedBlockPos, BlockType, BlockMeta);
cBlockHandler * BlockHandler = cBlockInfo::GetHandler(BlockType);
bool Placeable = ItemHandler->IsPlaceable() && !m_Player->IsGameModeAdventure() && !m_Player->IsGameModeSpectator();
bool BlockUsable = BlockHandler->IsUseable() && (!m_Player->IsGameModeSpectator() || cBlockInfo::IsUseableBySpectator(BlockType));
if (BlockUsable && !(m_Player->IsCrouched() && !HeldItem.IsEmpty()))
{
// use a block
cChunkInterface ChunkInterface(World->GetChunkMap());
if (!PlgMgr->CallHookPlayerUsingBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, BlockType, BlockMeta))
{
if (BlockHandler->OnUse(ChunkInterface, *World, *m_Player, ClickedBlockPos, a_BlockFace, CursorPos))
{
// block use was successful, we're done
PlgMgr->CallHookPlayerUsedBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, BlockType, BlockMeta);
Success = true;
}
// Check if the item is place able, for example a torch on a fence
if (!Success && Placeable)
{
// place a block
Success = ItemHandler->OnPlayerPlace(*World, *m_Player, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace, {a_CursorX, a_CursorY, a_CursorZ});
}
}
else
{
// TODO: OnCancelRightClick seems to do the same thing with updating blocks at the end of this function. Need to double check
// A plugin doesn't agree with the action, replace the block on the client and quit:
BlockHandler->OnCancelRightClick(ChunkInterface, *World, *m_Player, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace);
}
}
else if (Placeable)
{
// TODO: Double check that we don't need this for using item and for packet out of range
m_NumBlockChangeInteractionsThisTick++;
if (!CheckBlockInteractionsRate())
{
Kick("Too many blocks were placed / interacted with per unit time - hacked client?");
return;
}
// place a block
Success = ItemHandler->OnPlayerPlace(*World, *m_Player, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace, {a_CursorX, a_CursorY, a_CursorZ});
}
else
{
// Use an item in hand with a target block
if (!PlgMgr->CallHookPlayerUsingItem(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ))
{
// All plugins agree with using the item
cBlockInServerPluginInterface PluginInterface(*World);
ItemHandler->OnItemUse(World, m_Player, PluginInterface, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace);
PlgMgr->CallHookPlayerUsedItem(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
Success = true;
}
}
}
if (!Success)
{
// Update the target block including the block above and below for 2 block high things
AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace);
for (int y = a_BlockY - 1; y <= a_BlockY + 1; y++)
{
if (cChunkDef::IsValidHeight(y))
{
World->SendBlockTo(a_BlockX, y, a_BlockZ, *m_Player);
}
}
// TODO: Send corresponding slot based on hand
m_Player->GetInventory().SendEquippedSlot();
}
}
void cClientHandle::HandleChat(const AString & a_Message)
{
if ((a_Message.size()) > MAX_CHAT_MSG_LENGTH)
{
this->Kick(std::string("Please don't exceed the maximum message length of ")
+ std::to_string(MAX_CHAT_MSG_LENGTH)
);
return;
}
// We no longer need to postpone message processing, because the messages already arrive in the Tick thread
// If a command, perform it:
AString Message(a_Message);
if (cRoot::Get()->GetServer()->Command(*this, Message))
{
return;
}
// Not a command, broadcast as a message:
cCompositeChat Msg;
AString Color = m_Player->GetColor();
if (Color.length() == 3)
{
Color = AString("@") + Color[2];
}
else
{
Color.clear();
}
Msg.AddTextPart("<");
Msg.ParseText(m_Player->GetPrefix());
Msg.AddTextPart(m_Player->GetName(), Color);
Msg.ParseText(m_Player->GetSuffix());
Msg.AddTextPart("> ");
Msg.ParseText(Message);
Msg.UnderlineUrls();
cRoot::Get()->BroadcastChat(Msg);
}
void cClientHandle::HandlePlayerLook(float a_Rotation, float a_Pitch, bool a_IsOnGround)
{
if ((m_Player == nullptr) || (m_State != csPlaying))
{
return;
}
m_Player->SetYaw (a_Rotation);
m_Player->SetHeadYaw (a_Rotation);
m_Player->SetPitch (a_Pitch);
m_Player->SetTouchGround(a_IsOnGround);
}
void cClientHandle::HandlePlayerMoveLook(double a_PosX, double a_PosY, double a_PosZ, double a_Stance, float a_Rotation, float a_Pitch, bool a_IsOnGround)
{
HandlePlayerPos(a_PosX, a_PosY, a_PosZ, a_Stance, a_IsOnGround);
HandlePlayerLook(a_Rotation, a_Pitch, a_IsOnGround);
}
void cClientHandle::HandleAnimation(int a_Animation)
{
if (cPluginManager::Get()->CallHookPlayerAnimation(*m_Player, a_Animation))
{
// Plugin disagrees, bail out
return;
}
m_Player->GetWorld()->BroadcastEntityAnimation(*m_Player, static_cast<char>(a_Animation), this);
}
void cClientHandle::HandleSlotSelected(Int16 a_SlotNum)
{
m_Player->GetInventory().SetEquippedSlotNum(a_SlotNum);
m_Player->GetWorld()->BroadcastEntityEquipment(*m_Player, 0, m_Player->GetInventory().GetEquippedItem(), this);
}
void cClientHandle::HandleSpectate(const cUUID & a_PlayerUUID)
{
if (!m_Player->IsGameModeSpectator())
{
Kick("Tried to use spectator mode when not in game mode spectator.");
return;
}
m_Player->GetWorld()->DoWithPlayerByUUID(a_PlayerUUID, [=](cPlayer & a_ToSpectate)
{
m_Player->TeleportToEntity(a_ToSpectate);
return true;
});
}
void cClientHandle::HandleSteerVehicle(float a_Forward, float a_Sideways)
{
m_Player->SteerVehicle(a_Forward, a_Sideways);
}
void cClientHandle::HandleWindowClose(UInt8 a_WindowID)
{
m_Player->CloseWindowIfID(static_cast<char>(a_WindowID));
}
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),
ItemToString(a_HeldItem).c_str(), a_HeldItem.m_ItemCount
);
cWindow * Window = m_Player->GetWindow();
if (Window == nullptr)
{
LOGWARNING("Player \"%s\" clicked in a non-existent window. Ignoring", m_Username.c_str());
return;
}
Window->Clicked(*m_Player, a_WindowID, a_SlotNum, a_ClickAction, a_HeldItem);
}
void cClientHandle::HandleUpdateSign(
int a_BlockX, int a_BlockY, int a_BlockZ,
const AString & a_Line1, const AString & a_Line2,
const AString & a_Line3, const AString & a_Line4
)
{
if (m_LastPlacedSign.Equals(Vector3i(a_BlockX, a_BlockY, a_BlockZ)))
{
m_LastPlacedSign.Set(0, -1, 0);
m_Player->GetWorld()->SetSignLines(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4, m_Player);
}
}
void cClientHandle::HandleUseEntity(UInt32 a_TargetEntityID, bool a_IsLeftClick)
{
// TODO: Let plugins interfere via a hook
// If the player is a spectator, let him spectate
if (m_Player->IsGameModeSpectator() && a_IsLeftClick)
{
m_Player->GetWorld()->DoWithEntityByID(a_TargetEntityID, [=](cEntity & a_Entity)
{
m_Player->AttachTo(&a_Entity);
return true;
});
return;
}
// If it is a right click, call the entity's OnRightClicked() handler:
if (!a_IsLeftClick)
{
cWorld * World = m_Player->GetWorld();
World->DoWithEntityByID(a_TargetEntityID, [=](cEntity & a_Entity)
{
if (
cPluginManager::Get()->CallHookPlayerRightClickingEntity(*m_Player, a_Entity) ||
(
m_Player->IsGameModeSpectator() && // Spectators cannot interact with every entity
(
!a_Entity.IsMinecart() || // They can only interact with minecarts
(
(static_cast<cMinecart &>(a_Entity).GetPayload() != cMinecart::mpChest) && // And only if the type matches a minecart with a chest or
(static_cast<cMinecart &>(a_Entity).GetPayload() != cMinecart::mpHopper) // a minecart with a hopper
)
)
)
)
{
return false;
}
a_Entity.OnRightClicked(*m_Player);
return false;
}
);
return;
}
// If it is a left click, attack the entity:
m_Player->GetWorld()->DoWithEntityByID(a_TargetEntityID, [=](cEntity & a_Entity)
{
if (!a_Entity.GetWorld()->IsPVPEnabled())
{
// PVP is disabled, disallow players hurting other players:
if (a_Entity.IsPlayer())
{
// Player is hurting another player which is not allowed when PVP is disabled so ignore it
return true;
}
}
a_Entity.TakeDamage(*m_Player);
m_Player->AddFoodExhaustion(0.3);
if (a_Entity.IsPawn())
{
m_Player->NotifyNearbyWolves(static_cast<cPawn*>(&a_Entity), true);
}
return true;
}
);
}
void cClientHandle::HandleUseItem(eHand a_Hand)
{
// Use the held item without targeting a block: eating, drinking, charging a bow, using buckets
// In version 1.8.x, this function shares the same packet id with HandleRightClick.
// In version >= 1.9, there is a new packet id for "Use Item".
// TODO: We are still consuming the items in main hand. Remove this override when the off-hand consumption is handled correctly.
a_Hand = eHand::hMain;
const cItem & HeldItem = (a_Hand == eHand::hOff) ? m_Player->GetInventory().GetShieldSlot() : m_Player->GetEquippedItem();
cItemHandler * ItemHandler = cItemHandler::GetItemHandler(HeldItem.m_ItemType);
cWorld * World = m_Player->GetWorld();
cPluginManager * PlgMgr = cRoot::Get()->GetPluginManager();
LOGD("HandleUseItem: Hand: %d; HeldItem: %s", a_Hand, ItemToFullString(HeldItem).c_str());
if (PlgMgr->CallHookPlayerRightClick(*m_Player, -1, 255, -1, BLOCK_FACE_NONE, 0, 0, 0))
{
return; // Plugin denied click action
}
// Use item in main / off hand
// TODO: do we need to sync the current inventory with client if it fails?
if (m_Player->IsFrozen() || m_Player->IsGameModeSpectator())
{
return;
}
if (ItemHandler->IsFood() || ItemHandler->IsDrinkable(HeldItem.m_ItemDamage))
{
if (
ItemHandler->IsFood() &&
(m_Player->IsSatiated() || m_Player->IsGameModeCreative()) && // Only non-creative or hungry players can eat
(HeldItem.m_ItemType != E_ITEM_GOLDEN_APPLE) // Golden apple is a special case, it is used instead of eaten
)
{
// The player is satiated or in creative, and trying to eat
return;
}
if (!PlgMgr->CallHookPlayerEating(*m_Player))
{
m_Player->StartEating();
}
}
else
{
// Use an item in hand without a target block
if (!PlgMgr->CallHookPlayerUsingItem(*m_Player, -1, 255, -1, BLOCK_FACE_NONE, 0, 0, 0))
{
// All plugins agree with using the item
cBlockInServerPluginInterface PluginInterface(*World);
ItemHandler->OnItemUse(World, m_Player, PluginInterface, HeldItem, {-1, 255, -1}, BLOCK_FACE_NONE);
PlgMgr->CallHookPlayerUsedItem(*m_Player, -1, 255, -1, BLOCK_FACE_NONE, 0, 0, 0);
}
}
}
void cClientHandle::HandleRespawn(void)
{
if (m_Player == nullptr)
{
Destroy();
return;
}
m_Player->Respawn();
cRoot::Get()->GetPluginManager()->CallHookPlayerSpawned(*m_Player);
}
void cClientHandle::HandleKeepAlive(UInt32 a_KeepAliveID)
{
if (a_KeepAliveID == m_PingID)
{
m_Ping = std::chrono::steady_clock::now() - m_PingStartTime;
}
}
bool cClientHandle::CheckMultiLogin(const AString & a_Username)
{
// If the multilogin is allowed, skip this check entirely:
if ((cRoot::Get()->GetServer()->DoesAllowMultiLogin()))
{
return true;
}
// Check if the player is waiting to be transferred to the World.
if (cRoot::Get()->GetServer()->IsPlayerInQueue(a_Username))
{
Kick("A player of the username is already logged in");
return false;
}
// Check if the player is in any World.
if (cRoot::Get()->DoWithPlayer(a_Username, [](cPlayer &) { return true; }))
{
Kick("A player of the username is already logged in");
return false;
}
return true;
}
bool cClientHandle::HandleHandshake(const AString & a_Username)
{
if (a_Username.length() > 16)
{
Kick("Your username is too long (>16 characters)");
return false;
}
if (cRoot::Get()->GetPluginManager()->CallHookHandshake(*this, a_Username))
{
Kick("Entry denied by plugin");
return false;
}
return CheckMultiLogin(a_Username);
}
void cClientHandle::HandleEntityCrouch(UInt32 a_EntityID, bool a_IsCrouching)
{
if (a_EntityID != m_Player->GetUniqueID())
{
// We should only receive entity actions from the entity that is performing the action
return;
}
m_Player->SetCrouch(a_IsCrouching);
}
void cClientHandle::HandleEntityLeaveBed(UInt32 a_EntityID)
{
if (a_EntityID != m_Player->GetUniqueID())
{
// We should only receive entity actions from the entity that is performing the action
return;
}
cChunkInterface Interface(GetPlayer()->GetWorld()->GetChunkMap());
cBlockBedHandler::SetBedOccupationState(Interface, GetPlayer()->GetLastBedPos(), false);
GetPlayer()->SetIsInBed(false);
}
void cClientHandle::HandleEntitySprinting(UInt32 a_EntityID, bool a_IsSprinting)
{
if (a_EntityID != m_Player->GetUniqueID())
{
// We should only receive entity actions from the entity that is performing the action
return;
}
m_Player->SetSprint(a_IsSprinting);
}
void cClientHandle::HandleUnmount(void)
{
if (m_Player == nullptr)
{
return;
}
m_Player->Detach();
}
void cClientHandle::HandleTabCompletion(const AString & a_Text)
{
AStringVector Results;
// Get player name completions.
if (cRoot::Get()->GetServer()->ShouldAllowMultiWorldTabCompletion())
{
Results = cRoot::Get()->GetPlayerTabCompletionMultiWorld(a_Text);
}
else
{
m_Player->GetWorld()->TabCompleteUserName(a_Text, Results);
}
// Get command completions.
cRoot::Get()->GetPluginManager()->TabCompleteCommand(a_Text, Results, m_Player);
if (Results.empty())
{
return;
}
// Sort and send results.
std::sort(Results.begin(), Results.end());
SendTabCompletionResults(Results);
}
void cClientHandle::SendData(const char * a_Data, size_t a_Size)
{
if (m_HasSentDC)
{
// This could crash the client, because they've already unloaded the world etc., and suddenly a wild packet appears (#31)
return;
}
cCSLock Lock(m_CSOutgoingData);
m_OutgoingData.append(a_Data, a_Size);
}
void cClientHandle::RemoveFromWorld(void)
{
// Remove all associated chunks:
decltype(m_LoadedChunks) Chunks;
{
cCSLock Lock(m_CSChunkLists);
std::swap(Chunks, m_LoadedChunks);
m_ChunksToSend.clear();
}
for (auto && Chunk : Chunks)
{
SendUnloadChunk(Chunk.m_ChunkX, Chunk.m_ChunkZ);
} // for itr - Chunks[]
// Here, we set last streamed values to bogus ones so everything is resent
m_LastStreamedChunkX = 0x7fffffff;
m_LastStreamedChunkZ = 0x7fffffff;
}
void cClientHandle::InvalidateCachedSentChunk()
{
ASSERT(m_Player != nullptr);
// Sets this to a junk value different from the player's current chunk, which invalidates it and
// ensures its value will not be used.
m_CachedSentChunk = cChunkCoords(m_Player->GetChunkX() + 500, m_Player->GetChunkZ());
}
bool cClientHandle::IsPlayerChunkSent()
{
return m_HasSentPlayerChunk;
}
bool cClientHandle::CheckBlockInteractionsRate(void)
{
ASSERT(m_Player != nullptr);
ASSERT(m_Player->GetWorld() != nullptr);
if (!cRoot::Get()->GetServer()->ShouldLimitPlayerBlockChanges())
{
return true;
}
return (m_NumBlockChangeInteractionsThisTick <= MAX_BLOCK_CHANGE_INTERACTIONS);
}
void cClientHandle::Tick(float a_Dt)
{
// anticheat fastbreak
if (m_HasStartedDigging)
{
BLOCKTYPE Block = m_Player->GetWorld()->GetBlock(m_LastDigBlockX, m_LastDigBlockY, m_LastDigBlockZ);
m_BreakProgress += m_Player->GetPlayerRelativeBlockHardness(Block);
}
ProcessProtocolInOut();
// If player has been kicked, terminate the connection:
if (m_State == csKicked)
{
m_Link->Shutdown();
}
// If destruction is queued, destroy now:
if (m_State == csQueuedForDestruction)
{
LOGD("Client %s @ %s (%p) has been queued for destruction, destroying now.",
m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this)
);
Destroy();
return;
}
m_TicksSinceLastPacket += 1;
if (m_TicksSinceLastPacket > 600) // 30 seconds time-out
{
SendDisconnect("Nooooo!! You timed out! D: Come back!");
return;
}
// Only process further if the player object is valid:
if (m_Player == nullptr)
{
return;
}
// Freeze the player if they are standing in a chunk not yet sent to the client
m_HasSentPlayerChunk = false;
if (m_Player->GetParentChunk() != nullptr)
{
// If the chunk is invalid, it has definitely not been sent to the client yet
if (m_Player->GetParentChunk()->IsValid())
{
// Before iterating m_SentChunks, see if the player's coords equal m_CachedSentChunk
// If so, the chunk has been sent to the client. This is an optimization that saves an iteration of m_SentChunks.
if (cChunkCoords(m_Player->GetChunkX(), m_Player->GetChunkZ()) == m_CachedSentChunk)
{
m_HasSentPlayerChunk = true;
}
else
{
// This block is entered only when the player moves to a new chunk, invalidating the cached coords.
// Otherwise the cached coords are used.
cCSLock Lock(m_CSChunkLists);
auto itr = std::find(m_SentChunks.begin(), m_SentChunks.end(), cChunkCoords(m_Player->GetChunkX(), m_Player->GetChunkZ()));
if (itr != m_SentChunks.end())
{
m_CachedSentChunk = *itr;
m_HasSentPlayerChunk = true;
}
}
}
}
// If the chunk the player's in was just sent, spawn the player:
{
cCSLock lock(m_CSState);
if (m_HasSentPlayerChunk && (m_State == csDownloadingWorld))
{
m_Protocol->SendPlayerMoveLook();
m_State = csPlaying;
}
} // lock(m_CSState)
// Send a ping packet:
if (m_State == csPlaying)
{
if ((m_PingStartTime + PING_TIME_MS <= std::chrono::steady_clock::now()))
{
m_PingID++;
m_PingStartTime = std::chrono::steady_clock::now();
m_Protocol->SendKeepAlive(m_PingID);
}
}
if ((m_State >= csAuthenticated) && (m_State < csQueuedForDestruction))
{
// Stream 4 chunks per tick
for (int i = 0; i < 4; i++)
{
// Stream the next chunk
if (StreamNextChunk())
{
// Streaming finished. All chunks are loaded.
break;
}
}
// Unload all chunks that are out of the view distance (every 5 seconds)
if ((m_Player->GetWorld()->GetWorldAge() % 100) == 0)
{
UnloadOutOfRangeChunks();
}
}
// Handle block break animation:
if (m_BlockDigAnimStage > -1)
{
int lastAnimVal = m_BlockDigAnimStage;
m_BlockDigAnimStage += static_cast<int>(m_BlockDigAnimSpeed * a_Dt);
if (m_BlockDigAnimStage > 9000)
{
m_BlockDigAnimStage = 9000;
}
if (m_BlockDigAnimStage / 1000 != lastAnimVal / 1000)
{
m_Player->GetWorld()->BroadcastBlockBreakAnimation(static_cast<UInt32>(m_UniqueID), {m_BlockDigAnimX, m_BlockDigAnimY, m_BlockDigAnimZ}, static_cast<char>(m_BlockDigAnimStage / 1000), this);
}
}
// Reset explosion & block change counters:
m_NumExplosionsThisTick = 0;
m_NumBlockChangeInteractionsThisTick = 0;
}
void cClientHandle::ServerTick(float a_Dt)
{
ProcessProtocolInOut();
// If destruction is queued, destroy now:
if (m_State == csQueuedForDestruction)
{
LOGD("Client %s @ %s (%p) has been queued for destruction, destroying now.",
m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this)
);
Destroy();
return;
}
{
cCSLock lock(m_CSState);
if (m_State == csAuthenticated)
{
StreamNextChunk();
// Remove the client handle from the server, it will be ticked from its cPlayer object from now on
cRoot::Get()->GetServer()->ClientMovedToWorld(this);
// Add the player to the world (start ticking from there):
m_State = csDownloadingWorld;
m_Player->Initialize(std::move(m_PlayerPtr), *(m_Player->GetWorld()));
return;
}
} // lock(m_CSState)
m_TicksSinceLastPacket += 1;
if (m_TicksSinceLastPacket > 600) // 30 seconds
{
SendDisconnect("Nooooo!! You timed out! D: Come back!");
}
}
void cClientHandle::SendAttachEntity(const cEntity & a_Entity, const cEntity & a_Vehicle)
{
m_Protocol->SendAttachEntity(a_Entity, a_Vehicle);
}
void cClientHandle::SendLeashEntity(const cEntity & a_Entity, const cEntity & a_EntityLeashedTo)
{
m_Protocol->SendLeashEntity(a_Entity, a_EntityLeashedTo);
}
void cClientHandle::SendUnleashEntity(const cEntity & a_Entity)
{
m_Protocol->SendUnleashEntity(a_Entity);
}
void cClientHandle::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
{
m_Protocol->SendBlockAction(a_BlockX, a_BlockY, a_BlockZ, a_Byte1, a_Byte2, a_BlockType);
}
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);
}
void cClientHandle::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
int ChunkX, ChunkZ = 0;
cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
cChunkCoords ChunkCoords = cChunkCoords(ChunkX, ChunkZ);
// Do not send block changes in chunks that weren't sent to the client yet:
cCSLock Lock(m_CSChunkLists);
if (std::find(m_SentChunks.begin(), m_SentChunks.end(), ChunkCoords) != m_SentChunks.end())
{
Lock.Unlock();
m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
}
}
void cClientHandle::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
{
ASSERT(!a_Changes.empty()); // We don't want to be sending empty change packets!
// Do not send block changes in chunks that weren't sent to the client yet:
cChunkCoords ChunkCoords = cChunkCoords(a_ChunkX, a_ChunkZ);
cCSLock Lock(m_CSChunkLists);
if (std::find(m_SentChunks.begin(), m_SentChunks.end(), ChunkCoords) != m_SentChunks.end())
{
Lock.Unlock();
m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
}
}
void cClientHandle::SendCameraSetTo(const cEntity & a_Entity)
{
m_Protocol->SendCameraSetTo(a_Entity);
}
void cClientHandle::SendChat(const AString & a_Message, eMessageType a_ChatPrefix, const AString & a_AdditionalData)
{
cWorld * World = GetPlayer()->GetWorld();
if (World == nullptr)
{
World = cRoot::Get()->GetWorld(GetPlayer()->GetLoadedWorldName());
if (World == nullptr)
{
World = cRoot::Get()->GetDefaultWorld();
}
}
bool ShouldUsePrefixes = World->ShouldUseChatPrefixes();
AString Message = FormatMessageType(ShouldUsePrefixes, a_ChatPrefix, a_AdditionalData);
m_Protocol->SendChat(Message.append(a_Message), ctChatBox, ShouldUsePrefixes);
}
void cClientHandle::SendChat(const cCompositeChat & a_Message)
{
cWorld * World = GetPlayer()->GetWorld();
if (World == nullptr)
{
World = cRoot::Get()->GetWorld(GetPlayer()->GetLoadedWorldName());
if (World == nullptr)
{
World = cRoot::Get()->GetDefaultWorld();
}
}
bool ShouldUsePrefixes = World->ShouldUseChatPrefixes();
m_Protocol->SendChat(a_Message, ctChatBox, ShouldUsePrefixes);
}
void cClientHandle::SendChatRaw(const AString & a_MessageRaw, eChatType a_Type)
{
m_Protocol->SendChatRaw(a_MessageRaw, a_Type);
}
void cClientHandle::SendChatAboveActionBar(const AString & a_Message, eMessageType a_ChatPrefix, const AString & a_AdditionalData)
{
cWorld * World = GetPlayer()->GetWorld();
if (World == nullptr)
{
World = cRoot::Get()->GetWorld(GetPlayer()->GetLoadedWorldName());
if (World == nullptr)
{
World = cRoot::Get()->GetDefaultWorld();
}
}
AString Message = FormatMessageType(World->ShouldUseChatPrefixes(), a_ChatPrefix, a_AdditionalData);
m_Protocol->SendChat(Message.append(a_Message), ctAboveActionBar);
}
void cClientHandle::SendChatAboveActionBar(const cCompositeChat & a_Message)
{
m_Protocol->SendChat(a_Message, ctAboveActionBar, GetPlayer()->GetWorld()->ShouldUseChatPrefixes());
}
void cClientHandle::SendChatSystem(const AString & a_Message, eMessageType a_ChatPrefix, const AString & a_AdditionalData)
{
cWorld * World = GetPlayer()->GetWorld();
if (World == nullptr)
{
World = cRoot::Get()->GetWorld(GetPlayer()->GetLoadedWorldName());
if (World == nullptr)
{
World = cRoot::Get()->GetDefaultWorld();
}
}
auto ShouldUsePrefixes = World->ShouldUseChatPrefixes();
AString Message = FormatMessageType(ShouldUsePrefixes, a_ChatPrefix, a_AdditionalData);
m_Protocol->SendChat(Message.append(a_Message), ctSystem, ShouldUsePrefixes);
}
void cClientHandle::SendChatSystem(const cCompositeChat & a_Message)
{
m_Protocol->SendChat(a_Message, ctSystem, GetPlayer()->GetWorld()->ShouldUseChatPrefixes());
}
void cClientHandle::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
{
ASSERT(m_Player != nullptr);
// Check chunks being sent, erase them from m_ChunksToSend:
bool Found = false;
{
cCSLock Lock(m_CSChunkLists);
auto itr = m_ChunksToSend.find(cChunkCoords{a_ChunkX, a_ChunkZ});
if (itr != m_ChunksToSend.end())
{
m_ChunksToSend.erase(itr);
Found = true;
}
}
if (!Found)
{
// This just sometimes happens. If you have a reliably replicatable situation for this, go ahead and fix it
// It's not a big issue anyway, just means that some chunks may be compressed several times
// LOGD("Refusing to send chunk [%d, %d] to client \"%s\" at [%d, %d].", ChunkX, ChunkZ, m_Username.c_str(), m_Player->GetChunkX(), m_Player->GetChunkZ());
return;
}
if (m_Protocol == nullptr)
{
// TODO (#2588): investigate if and why this occurs
return;
}
m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
// Add the chunk to the list of chunks sent to the player:
{
cCSLock Lock(m_CSChunkLists);
m_SentChunks.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
}
}
void cClientHandle::SendCollectEntity(const cEntity & a_Collected, const cEntity & a_Collector, unsigned a_Count)
{
m_Protocol->SendCollectEntity(a_Collected, a_Collector, a_Count);
}
void cClientHandle::SendDestroyEntity(const cEntity & a_Entity)
{
m_Protocol->SendDestroyEntity(a_Entity);
}
void cClientHandle::SendDetachEntity(const cEntity & a_Entity, const cEntity & a_PreviousVehicle)
{
m_Protocol->SendDetachEntity(a_Entity, a_PreviousVehicle);
}
void cClientHandle::SendDisconnect(const AString & a_Reason)
{
// Destruction (Destroy()) is called when the client disconnects, not when a disconnect packet (or anything else) is sent
// Otherwise, the cClientHandle instance is can be unexpectedly removed from the associated player - Core/#142
if (!m_HasSentDC)
{
LOGD("Sending a DC: \"%s\"", StripColorCodes(a_Reason).c_str());
m_Protocol->SendDisconnect(a_Reason);
m_HasSentDC = true;
// csKicked means m_Link will be shut down on the next tick. The
// disconnect packet data is sent in the tick thread so the connection
// is closed there after the data is sent.
SetState(csKicked);
}
}
void cClientHandle::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
{
m_LastPlacedSign.Set(a_BlockX, a_BlockY, a_BlockZ);
m_Protocol->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
}
void cClientHandle::SendEntityEffect(const cEntity & a_Entity, int a_EffectID, int a_Amplifier, int a_Duration)
{
m_Protocol->SendEntityEffect(a_Entity, a_EffectID, a_Amplifier, a_Duration);
}
void cClientHandle::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
{
m_Protocol->SendEntityEquipment(a_Entity, a_SlotNum, a_Item);
}
void cClientHandle::SendEntityHeadLook(const cEntity & a_Entity)
{
ASSERT(a_Entity.GetUniqueID() != m_Player->GetUniqueID()); // Must not send for self
m_Protocol->SendEntityHeadLook(a_Entity);
}
void cClientHandle::SendEntityLook(const cEntity & a_Entity)
{
ASSERT(a_Entity.GetUniqueID() != m_Player->GetUniqueID()); // Must not send for self
m_Protocol->SendEntityLook(a_Entity);
}
void cClientHandle::SendEntityMetadata(const cEntity & a_Entity)
{
m_Protocol->SendEntityMetadata(a_Entity);
}
void cClientHandle::SendEntityPosition(const cEntity & a_Entity)
{
m_Protocol->SendEntityPosition(a_Entity);
}
void cClientHandle::SendEntityStatus(const cEntity & a_Entity, char a_Status)
{
m_Protocol->SendEntityStatus(a_Entity, a_Status);
}
void cClientHandle::SendEntityVelocity(const cEntity & a_Entity)
{
m_Protocol->SendEntityVelocity(a_Entity);
}
void cClientHandle::SendExplosion(const Vector3d a_Pos, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d a_PlayerMotion)
{
if (m_NumExplosionsThisTick > MAX_EXPLOSIONS_PER_TICK)
{
LOGD("Dropped an explosion!");
return;
}
// Update the statistics:
m_NumExplosionsThisTick++;
m_Protocol->SendExplosion(a_Pos.x, a_Pos.y, a_Pos.z, a_Radius, a_BlocksAffected, a_PlayerMotion);
}
void cClientHandle::SendGameMode(eGameMode a_GameMode)
{
m_Protocol->SendGameMode(a_GameMode);
}
void cClientHandle::SendHealth(void)
{
m_Protocol->SendHealth();
}
void cClientHandle::SendHeldItemChange(int a_ItemIndex)
{
m_Protocol->SendHeldItemChange(a_ItemIndex);
}
void cClientHandle::SendHideTitle(void)
{
m_Protocol->SendHideTitle();
}
void cClientHandle::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
{
m_Protocol->SendInventorySlot(a_WindowID, a_SlotNum, a_Item);
}
void cClientHandle::SendMapData(const cMap & a_Map, int a_DataStartX, int a_DataStartY)
{
m_Protocol->SendMapData(a_Map, a_DataStartX, a_DataStartY);
}
void cClientHandle::SendParticleEffect(const AString & a_ParticleName, float a_SrcX, float a_SrcY, float a_SrcZ, float a_OffsetX, float a_OffsetY, float a_OffsetZ, float a_ParticleData, int a_ParticleAmount)
{
m_Protocol->SendParticleEffect(a_ParticleName, a_SrcX, a_SrcY, a_SrcZ, a_OffsetX, a_OffsetY, a_OffsetZ, a_ParticleData, a_ParticleAmount);
}
void cClientHandle::SendParticleEffect(const AString & a_ParticleName, const Vector3f a_Src, const Vector3f a_Offset, float a_ParticleData, int a_ParticleAmount, std::array<int, 2> a_Data)
{
m_Protocol->SendParticleEffect(a_ParticleName, a_Src, a_Offset, a_ParticleData, a_ParticleAmount, a_Data);
}
void cClientHandle::SendPaintingSpawn(const cPainting & a_Painting)
{
m_Protocol->SendPaintingSpawn(a_Painting);
}
void cClientHandle::SendEntityAnimation(const cEntity & a_Entity, char a_Animation)
{
m_Protocol->SendEntityAnimation(a_Entity, a_Animation);
}
void cClientHandle::SendPlayerAbilities()
{
m_Protocol->SendPlayerAbilities();
}
void cClientHandle::SendPlayerListAddPlayer(const cPlayer & a_Player)
{
m_Protocol->SendPlayerListAddPlayer(a_Player);
}
void cClientHandle::SendPlayerListRemovePlayer(const cPlayer & a_Player)
{
m_Protocol->SendPlayerListRemovePlayer(a_Player);
}
void cClientHandle::SendPlayerListUpdateGameMode(const cPlayer & a_Player)
{
m_Protocol->SendPlayerListUpdateGameMode(a_Player);
}
void cClientHandle::SendPlayerListUpdatePing(const cPlayer & a_Player)
{
m_Protocol->SendPlayerListUpdatePing(a_Player);
}
void cClientHandle::SendPlayerListUpdateDisplayName(const cPlayer & a_Player, const AString & a_CustomName)
{
m_Protocol->SendPlayerListUpdateDisplayName(a_Player, a_CustomName);
}
void cClientHandle::SendPlayerMaxSpeed(void)
{
m_Protocol->SendPlayerMaxSpeed();
}
void cClientHandle::SendPlayerMoveLook(void)
{
/*
FLOGD("Sending PlayerMoveLook: {0:0.2f}, stance {1:0.2f}, OnGround: {2}",
m_Player->GetPosition(), m_Player->GetStance(), m_Player->IsOnGround()
);
*/
m_Protocol->SendPlayerMoveLook();
}
void cClientHandle::SendPlayerPosition(void)
{
m_Protocol->SendPlayerPosition();
}
void cClientHandle::SendPlayerSpawn(const cPlayer & a_Player)
{
if (a_Player.GetUniqueID() == m_Player->GetUniqueID())
{
// Do NOT send this packet to myself
return;
}
LOGD("Spawning player \"%s\" on client \"%s\" @ %s",
a_Player.GetName().c_str(), GetPlayer()->GetName().c_str(), GetIPString().c_str()
);
m_Protocol->SendPlayerSpawn(a_Player);
}
void cClientHandle::SendPluginMessage(const AString & a_Channel, const AString & a_Message)
{
m_Protocol->SendPluginMessage(a_Channel, a_Message);
}
void cClientHandle::SendRemoveEntityEffect(const cEntity & a_Entity, int a_EffectID)
{
m_Protocol->SendRemoveEntityEffect(a_Entity, a_EffectID);
}
void cClientHandle::SendResetTitle()
{
m_Protocol->SendResetTitle();
}
void cClientHandle::SendRespawn(eDimension a_Dimension, bool a_ShouldIgnoreDimensionChecks)
{
if ((!a_ShouldIgnoreDimensionChecks) && (a_Dimension == m_LastSentDimension))
{
// The client goes crazy if we send a respawn packet with the dimension of the current world
// So we send a temporary one first.
// This is not needed when the player dies, hence the a_ShouldIgnoreDimensionChecks flag.
// a_ShouldIgnoreDimensionChecks is true only at cPlayer::respawn, which is called after
// the player dies.
eDimension TemporaryDimension = (a_Dimension == dimOverworld) ? dimNether : dimOverworld;
m_Protocol->SendRespawn(TemporaryDimension);
}
m_Protocol->SendRespawn(a_Dimension);
m_Protocol->SendExperience();
m_LastSentDimension = a_Dimension;
}
void cClientHandle::SendExperience(void)
{
m_Protocol->SendExperience();
}
void cClientHandle::SendExperienceOrb(const cExpOrb & a_ExpOrb)
{
m_Protocol->SendExperienceOrb(a_ExpOrb);
}
void cClientHandle::SendResourcePack(const AString & a_ResourcePackUrl)
{
m_Protocol->SendResourcePack(a_ResourcePackUrl);
}
void cClientHandle::SendScoreboardObjective(const AString & a_Name, const AString & a_DisplayName, Byte a_Mode)
{
m_Protocol->SendScoreboardObjective(a_Name, a_DisplayName, a_Mode);
}
void cClientHandle::SendScoreUpdate(const AString & a_Objective, const AString & a_Player, cObjective::Score a_Score, Byte a_Mode)
{
m_Protocol->SendScoreUpdate(a_Objective, a_Player, a_Score, a_Mode);
}
void cClientHandle::SendDisplayObjective(const AString & a_Objective, cScoreboard::eDisplaySlot a_Display)
{
m_Protocol->SendDisplayObjective(a_Objective, a_Display);
}
void cClientHandle::SendSetSubTitle(const cCompositeChat & a_SubTitle)
{
m_Protocol->SendSetSubTitle(a_SubTitle);
}
void cClientHandle::SendSetRawSubTitle(const AString & a_SubTitle)
{
m_Protocol->SendSetRawSubTitle(a_SubTitle);
}
void cClientHandle::SendSetTitle(const cCompositeChat & a_Title)
{
m_Protocol->SendSetTitle(a_Title);
}
void cClientHandle::SendSetRawTitle(const AString & a_Title)
{
m_Protocol->SendSetRawTitle(a_Title);
}
void cClientHandle::SendSoundEffect(const AString & a_SoundName, double a_X, double a_Y, double a_Z, float a_Volume, float a_Pitch)
{
LOG("SendSoundEffect with double args is deprecated, use version with vector position parameter.");
SendSoundEffect(a_SoundName, {a_X, a_Y, a_Z}, a_Volume, a_Pitch);
}
void cClientHandle::SendSoundEffect(const AString & a_SoundName, Vector3d a_Position, float a_Volume, float a_Pitch)
{
m_Protocol->SendSoundEffect(a_SoundName, a_Position.x, a_Position.y, a_Position.z, a_Volume, a_Pitch);
}
void cClientHandle::SendSoundParticleEffect(const EffectID a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
{
m_Protocol->SendSoundParticleEffect(a_EffectID, a_SrcX, a_SrcY, a_SrcZ, a_Data);
}
void cClientHandle::SendSpawnEntity(const cEntity & a_Entity)
{
m_Protocol->SendSpawnEntity(a_Entity);
}
void cClientHandle::SendSpawnMob(const cMonster & a_Mob)
{
m_Protocol->SendSpawnMob(a_Mob);
}
void cClientHandle::SendStatistics(const cStatManager & a_Manager)
{
m_Protocol->SendStatistics(a_Manager);
}
void cClientHandle::SendTabCompletionResults(const AStringVector & a_Results)
{
m_Protocol->SendTabCompletionResults(a_Results);
}
void cClientHandle::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
{
m_Protocol->SendThunderbolt(a_BlockX, a_BlockY, a_BlockZ);
}
void cClientHandle::SendTitleTimes(int a_FadeInTicks, int a_DisplayTicks, int a_FadeOutTicks)
{
m_Protocol->SendTitleTimes(a_FadeInTicks, a_DisplayTicks, a_FadeOutTicks);
}
void cClientHandle::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay, bool a_DoDaylightCycle)
{
m_Protocol->SendTimeUpdate(a_WorldAge, a_TimeOfDay, a_DoDaylightCycle);
}
void cClientHandle::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
{
// Remove the chunk from the list of chunks sent to the client:
{
cCSLock Lock(m_CSChunkLists);
m_SentChunks.remove(cChunkCoords(a_ChunkX, a_ChunkZ));
}
m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
}
void cClientHandle::SendUpdateBlockEntity(cBlockEntity & a_BlockEntity)
{
m_Protocol->SendUpdateBlockEntity(a_BlockEntity);
}
void cClientHandle::SendUpdateSign(
int a_BlockX, int a_BlockY, int a_BlockZ,
const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4
)
{
m_Protocol->SendUpdateSign(
a_BlockX, a_BlockY, a_BlockZ,
a_Line1, a_Line2, a_Line3, a_Line4
);
}
void cClientHandle::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ)
{
m_Protocol->SendUseBed(a_Entity, a_BlockX, a_BlockY, a_BlockZ);
}
void cClientHandle::SendWeather(eWeather a_Weather)
{
m_Protocol->SendWeather(a_Weather);
}
void cClientHandle::SendWholeInventory(const cWindow & a_Window)
{
m_Protocol->SendWholeInventory(a_Window);
}
void cClientHandle::SendWindowClose(const cWindow & a_Window)
{
m_Protocol->SendWindowClose(a_Window);
}
void cClientHandle::SendWindowOpen(const cWindow & a_Window)
{
m_Protocol->SendWindowOpen(a_Window);
}
void cClientHandle::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
{
m_Protocol->SendWindowProperty(a_Window, a_Property, a_Value);
}
const AString & cClientHandle::GetUsername(void) const
{
return m_Username;
}
void cClientHandle::SetUsername( const AString & a_Username)
{
m_Username = a_Username;
}
void cClientHandle::SetViewDistance(int a_ViewDistance)
{
m_RequestedViewDistance = a_ViewDistance;
LOGD("%s is requesting ViewDistance of %d!", GetUsername().c_str(), m_RequestedViewDistance);
// Set the current view distance based on the requested VD and world max VD:
cWorld * world = m_Player->GetWorld();
if (world != nullptr)
{
m_CurrentViewDistance = Clamp(a_ViewDistance, cClientHandle::MIN_VIEW_DISTANCE, world->GetMaxViewDistance());
}
}
bool cClientHandle::HasPluginChannel(const AString & a_PluginChannel)
{
return (m_PluginChannels.find(a_PluginChannel) != m_PluginChannels.end());
}
bool cClientHandle::WantsSendChunk(int a_ChunkX, int a_ChunkZ)
{
if (m_State >= csQueuedForDestruction)
{
return false;
}
cCSLock Lock(m_CSChunkLists);
return m_ChunksToSend.find(cChunkCoords(a_ChunkX, a_ChunkZ)) != m_ChunksToSend.end();
}
void cClientHandle::AddWantedChunk(int a_ChunkX, int a_ChunkZ)
{
if (m_State >= csQueuedForDestruction)
{
return;
}
LOGD("Adding chunk [%d, %d] to wanted chunks for client %p", a_ChunkX, a_ChunkZ, static_cast<void *>(this));
cCSLock Lock(m_CSChunkLists);
if (m_ChunksToSend.find(cChunkCoords(a_ChunkX, a_ChunkZ)) == m_ChunksToSend.end())
{
m_ChunksToSend.emplace(a_ChunkX, a_ChunkZ);
}
}
void cClientHandle::PacketBufferFull(void)
{
// Too much data in the incoming queue, the server is probably too busy, kick the client:
LOGERROR("Too much data in queue for client \"%s\" @ %s, kicking them.", m_Username.c_str(), m_IPString.c_str());
SendDisconnect("Server busy");
}
void cClientHandle::PacketUnknown(UInt32 a_PacketType)
{
LOGERROR("Unknown packet type 0x%x from client \"%s\" @ %s", a_PacketType, m_Username.c_str(), m_IPString.c_str());
AString Reason;
Printf(Reason, "Unknown [C->S] PacketType: 0x%x", a_PacketType);
SendDisconnect(Reason);
}
void cClientHandle::PacketError(UInt32 a_PacketType)
{
LOGERROR("Protocol error while parsing packet type 0x%02x; disconnecting client \"%s\"", a_PacketType, m_Username.c_str());
SendDisconnect("Protocol error");
}
void cClientHandle::SocketClosed(void)
{
// The socket has been closed for any reason
/*
LOGD("SocketClosed for client %s @ %s (%p), state = %d, m_Player = %p",
m_Username.c_str(), m_IPString.c_str(), static_cast<void *>(this), m_State.load(), static_cast<void *>(m_Player)
);
//*/
// Log into console, unless it's a client ping:
if (!m_Username.empty())
{
LOGD("Client %s @ %s disconnected", m_Username.c_str(), m_IPString.c_str());
cRoot::Get()->GetPluginManager()->CallHookDisconnect(*this, "Player disconnected");
}
// Queue self for destruction:
SetState(csQueuedForDestruction);
}
void cClientHandle::SetSelf(cClientHandlePtr a_Self)
{
ASSERT(m_Self == nullptr);
m_Self = std::move(a_Self);
}
bool cClientHandle::SetState(eState a_NewState)
{
cCSLock Lock(m_CSState);
if (a_NewState <= m_State)
{
return false; // Can only advance the state machine
}
m_State = a_NewState;
return true;
}
void cClientHandle::ProcessProtocolInOut(void)
{
// Process received network data:
AString IncomingData;
{
cCSLock Lock(m_CSIncomingData);
std::swap(IncomingData, m_IncomingData);
}
if (!IncomingData.empty())
{
m_Protocol->DataReceived(IncomingData.data(), IncomingData.size());
}
// Send any queued outgoing data:
AString OutgoingData;
{
cCSLock Lock(m_CSOutgoingData);
std::swap(OutgoingData, m_OutgoingData);
}
auto link = m_Link;
if ((link != nullptr) && !OutgoingData.empty())
{
link->Send(OutgoingData.data(), OutgoingData.size());
}
}
void cClientHandle::OnLinkCreated(cTCPLinkPtr a_Link)
{
m_Link = a_Link;
}
void cClientHandle::OnReceivedData(const char * a_Data, size_t a_Length)
{
// Reset the timeout:
m_TicksSinceLastPacket = 0;
// Queue the incoming data to be processed in the tick thread:
cCSLock Lock(m_CSIncomingData);
m_IncomingData.append(a_Data, a_Length);
}
void cClientHandle::OnRemoteClosed(void)
{
/*
LOGD("Client socket for %s @ %s has been closed.",
m_Username.c_str(), m_IPString.c_str()
);
//*/
{
cCSLock Lock(m_CSOutgoingData);
m_Link.reset();
}
SocketClosed();
}
void cClientHandle::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
{
LOGD("An error has occurred on client link for %s @ %s: %d (%s). Client disconnected.",
m_Username.c_str(), m_IPString.c_str(), a_ErrorCode, a_ErrorMsg.c_str()
);
{
cCSLock Lock(m_CSOutgoingData);
m_Link.reset();
}
SocketClosed();
}
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