ChunkMap.cpp

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#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
#include "ChunkMap.h"
#include "BlockInfo.h"
#include "World.h"
#include "Root.h"
#include "Entities/Player.h"
#include "Item.h"
#include "Chunk.h"
#include "Generating/Trees.h"  // used in cChunkMap::ReplaceTreeBlocks() for tree block discrimination
#include "BlockArea.h"
#include "Bindings/PluginManager.h"
#include "Blocks/BlockHandler.h"
#include "MobCensus.h"
#include "MobSpawner.h"
#include "BoundingBox.h"
#include "SetChunkData.h"
#include "Blocks/ChunkInterface.h"
#include "Entities/Pickup.h"
#include "DeadlockDetect.h"
 
 
 
 
 
// cChunkMap:
 
cChunkMap::cChunkMap(cWorld * a_World) :
    m_World(a_World)
{
}
 
 
 
 
 
cChunk & cChunkMap::ConstructChunk(int a_ChunkX, int a_ChunkZ)
{
    // If not exists insert. Then, return the chunk at these coordinates:
    return m_Chunks.try_emplace(
        { a_ChunkX, a_ChunkZ },
        a_ChunkX, a_ChunkZ, this, m_World
    ).first->second;
}
 
 
 
 
 
cChunk & cChunkMap::GetChunk(int a_ChunkX, int a_ChunkZ)
{
    ASSERT(m_CSChunks.IsLockedByCurrentThread());  // m_CSChunks should already be locked by the operation that called us
 
    auto & Chunk = ConstructChunk(a_ChunkX, a_ChunkZ);
    if (!Chunk.IsValid() && !Chunk.IsQueued())
    {
        Chunk.SetPresence(cChunk::cpQueued);
        m_World->GetStorage().QueueLoadChunk(a_ChunkX, a_ChunkZ);
    }
    return Chunk;
}
 
 
 
 
 
cChunk * cChunkMap::FindChunk(int a_ChunkX, int a_ChunkZ)
{
    ASSERT(m_CSChunks.IsLockedByCurrentThread());
 
    const auto Chunk = m_Chunks.find({ a_ChunkX, a_ChunkZ });
    return (Chunk == m_Chunks.end()) ? nullptr : &Chunk->second;
}
 
 
 
 
 
const cChunk * cChunkMap::FindChunk(int a_ChunkX, int a_ChunkZ) const
{
    ASSERT(m_CSChunks.IsLockedByCurrentThread());
 
    const auto Chunk = m_Chunks.find({ a_ChunkX, a_ChunkZ });
    return (Chunk == m_Chunks.end()) ? nullptr : &Chunk->second;
}
 
 
 
 
 
void cChunkMap::SendBlockEntity(int a_BlockX, int a_BlockY, int a_BlockZ, cClientHandle & a_Client)
{
    cCSLock Lock(m_CSChunks);
    int ChunkX, ChunkZ;
    cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
    Chunk->SendBlockEntity(a_BlockX, a_BlockY, a_BlockZ, a_Client);
}
 
 
 
 
 
bool cChunkMap::UseBlockEntity(cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ)
{
    // a_Player rclked block entity at the coords specified, handle it
    cCSLock Lock(m_CSChunks);
    int ChunkX, ChunkZ;
    cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    return Chunk->UseBlockEntity(a_Player, a_BlockX, a_BlockY, a_BlockZ);
}
 
 
 
 
 
bool cChunkMap::DoWithChunk(int a_ChunkX, int a_ChunkZ, cChunkCallback a_Callback)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    return a_Callback(*Chunk);
}
 
 
 
 
 
bool cChunkMap::DoWithChunkAt(Vector3i a_BlockPos, cChunkCallback a_Callback)
{
    const auto Position = cChunkDef::BlockToChunk(a_BlockPos);
    return DoWithChunk(Position.m_ChunkX, Position.m_ChunkZ, a_Callback);
}
 
 
 
 
 
void cChunkMap::WakeUpSimulators(Vector3i a_Block)
{
    cCSLock Lock(m_CSChunks);
    const auto Position = cChunkDef::BlockToChunk(a_Block);
    const auto Chunk = FindChunk(Position.m_ChunkX, Position.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
 
    m_World->GetSimulatorManager()->WakeUp(*Chunk, cChunkDef::AbsoluteToRelative(a_Block, Position));
}
 
 
 
 
 
void cChunkMap::MarkChunkDirty(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
    Chunk->MarkDirty();
}
 
 
 
 
 
void cChunkMap::MarkChunkSaving(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
    Chunk->MarkSaving();
}
 
 
 
 
 
void cChunkMap::MarkChunkSaved (int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
    Chunk->MarkSaved();
}
 
 
 
 
 
void cChunkMap::SetChunkData(struct SetChunkData && a_SetChunkData)
{
    const int ChunkX = a_SetChunkData.Chunk.m_ChunkX;
    const int ChunkZ = a_SetChunkData.Chunk.m_ChunkZ;
    {
        cCSLock Lock(m_CSChunks);
        const auto Chunk = FindChunk(ChunkX, ChunkZ);
        ASSERT(Chunk != nullptr);  // Chunk cannot have unloaded since it is marked as queued
        Chunk->SetAllData(std::move(a_SetChunkData));
 
        // Notify relevant ChunkStays:
        cChunkStays ToBeDisabled;
        for (cChunkStays::iterator itr = m_ChunkStays.begin(), end = m_ChunkStays.end(); itr != end; ++itr)
        {
            if ((*itr)->ChunkAvailable(ChunkX, ChunkZ))
            {
                // The chunkstay wants to be disabled, add it to a list of to-be-disabled chunkstays for later processing:
                ToBeDisabled.push_back(*itr);
            }
        }  // for itr - m_ChunkStays[]
 
        // Disable (and possibly remove) the chunkstays that chose to get disabled:
        for (cChunkStays::iterator itr = ToBeDisabled.begin(), end = ToBeDisabled.end(); itr != end; ++itr)
        {
            (*itr)->Disable();
        }
    }
 
    // Notify plugins of the chunk becoming available
    cPluginManager::Get()->CallHookChunkAvailable(*m_World, ChunkX, ChunkZ);
}
 
 
 
 
 
void cChunkMap::ChunkLighted(
    int a_ChunkX, int a_ChunkZ,
    const cChunkDef::BlockNibbles & a_BlockLight,
    const cChunkDef::BlockNibbles & a_SkyLight
)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if (Chunk == nullptr)
    {
        // Chunk probably unloaded in the meantime
        return;
    }
    Chunk->SetLight(a_BlockLight, a_SkyLight);
}
 
 
 
 
 
bool cChunkMap::GetChunkData(cChunkCoords a_Coords, cChunkDataCallback & a_Callback) const
{
    if (!a_Callback.Coords(a_Coords.m_ChunkX, a_Coords.m_ChunkZ))
    {
        // The callback doesn't want the data
        return false;
    }
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_Coords.m_ChunkX, a_Coords.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        // The chunk is not present
        return false;
    }
    Chunk->GetAllData(a_Callback);
    return true;
}
 
 
 
 
 
bool cChunkMap::IsChunkQueued(int a_ChunkX, int a_ChunkZ) const
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    return (Chunk != nullptr) && Chunk->IsQueued();
}
 
 
 
 
 
bool cChunkMap::IsWeatherSunnyAt(int a_BlockX, int a_BlockZ) const
{
    int ChunkX, ChunkZ, BlockY = 0;
    cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return m_World->IsWeatherSunny();
    }
 
    return Chunk->IsWeatherSunnyAt(a_BlockX, a_BlockZ);
}
 
 
 
 
 
bool cChunkMap::IsWeatherWetAt(int a_BlockX, int a_BlockZ) const
{
    int ChunkX, ChunkZ, BlockY = 0;
    cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return m_World->IsWeatherWet();
    }
 
    return Chunk->IsWeatherWetAt(a_BlockX, a_BlockZ);
}
 
 
 
 
 
bool cChunkMap::IsWeatherWetAt(const Vector3i a_Position) const
{
    const auto ChunkPosition = cChunkDef::BlockToChunk(a_Position);
    const auto Position = cChunkDef::AbsoluteToRelative(a_Position, ChunkPosition);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkPosition.m_ChunkX, ChunkPosition.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return m_World->IsWeatherWet();
    }
 
    return Chunk->IsWeatherWetAt(Position);
}
 
 
 
 
 
bool cChunkMap::IsChunkValid(int a_ChunkX, int a_ChunkZ) const
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    return (Chunk != nullptr) && Chunk->IsValid();
}
 
 
 
 
 
bool cChunkMap::HasChunkAnyClients(int a_ChunkX, int a_ChunkZ) const
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    return (Chunk != nullptr) && Chunk->HasAnyClients();
}
 
 
 
 
 
int  cChunkMap::GetHeight(int a_BlockX, int a_BlockZ)
{
    for (;;)
    {
        cCSLock Lock(m_CSChunks);
        int ChunkX, ChunkZ, BlockY = 0;
        cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
        auto & Chunk = GetChunk(ChunkX, ChunkZ);
        if (Chunk.IsValid())
        {
            return Chunk.GetHeight(a_BlockX, a_BlockZ);
        }
 
        // The chunk is not valid, wait for it to become valid:
        cCSUnlock Unlock(Lock);
        m_evtChunkValid.Wait();
    }  // while (true)
}
 
 
 
 
 
bool cChunkMap::TryGetHeight(int a_BlockX, int a_BlockZ, int & a_Height)
{
    // Returns false if chunk not loaded / generated
    cCSLock Lock(m_CSChunks);
    int ChunkX, ChunkZ, BlockY = 0;
    cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    a_Height = Chunk->GetHeight(a_BlockX, a_BlockZ);
    return true;
}
 
 
 
 
 
void cChunkMap::FastSetBlock(Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->FastSetBlock(relPos, a_BlockType, a_BlockMeta);
    }
}
 
 
 
 
 
void cChunkMap::CollectPickupsByEntity(cEntity & a_Entity)
{
    cCSLock Lock(m_CSChunks);
 
    auto BoundingBox = a_Entity.GetBoundingBox();
    BoundingBox.Expand(1, 0.5, 1);
 
    ForEachEntityInBox(BoundingBox, [&a_Entity](cEntity & Entity)
    {
        // Only pickups and projectiles can be picked up:
        if (Entity.IsPickup())
        {
            /*
            LOG("Pickup %d being collected by player \"%s\", distance %f",
                (*itr)->GetUniqueID(), a_Player->GetName().c_str(), SqrDist
            );
            */
            static_cast<cPickup &>(Entity).CollectedBy(a_Entity);
        }
        else if (Entity.IsProjectile() && a_Entity.IsPlayer())
        {
            static_cast<cProjectileEntity &>(Entity).CollectedBy(static_cast<cPlayer&>(a_Entity));
        }
 
        // The entities will MarkDirty when they Destroy themselves
        return false;
    });
}
 
 
 
 
 
BLOCKTYPE cChunkMap::GetBlock(Vector3i a_BlockPos) const
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        return Chunk->GetBlock(relPos);
    }
    return 0;
}
 
 
 
 
 
NIBBLETYPE cChunkMap::GetBlockMeta(Vector3i a_BlockPos) const
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        return Chunk->GetMeta(relPos);
    }
    return 0;
}
 
 
 
 
 
NIBBLETYPE cChunkMap::GetBlockSkyLight(Vector3i a_BlockPos) const
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        return Chunk->GetSkyLight(relPos);
    }
    return 0;
}
 
 
 
 
 
NIBBLETYPE cChunkMap::GetBlockBlockLight(Vector3i a_BlockPos) const
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        return Chunk->GetBlockLight(relPos);
    }
    return 0;
}
 
 
 
 
 
void cChunkMap::SetBlockMeta(Vector3i a_BlockPos, NIBBLETYPE a_BlockMeta)
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->SetMeta(relPos, a_BlockMeta);
    }
}
 
 
 
 
 
void cChunkMap::SetBlock(Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->SetBlock(relPos, a_BlockType, a_BlockMeta);
    }
}
 
 
 
 
 
bool cChunkMap::GetBlockTypeMeta(Vector3i a_BlockPos, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta) const
{
    auto chunkCoord = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkCoord);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkCoord.m_ChunkX, chunkCoord.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->GetBlockTypeMeta(relPos, a_BlockType, a_BlockMeta);
        return true;
    }
    return false;
}
 
 
 
 
 
bool cChunkMap::GetBlockInfo(Vector3i a_BlockPos, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_Meta, NIBBLETYPE & a_SkyLight, NIBBLETYPE & a_BlockLight) const
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
 
    // Query the chunk, if loaded:
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->GetBlockInfo(relPos, a_BlockType, a_Meta, a_SkyLight, a_BlockLight);
        return true;
    }
    return false;
}
 
 
 
 
 
void cChunkMap::ReplaceTreeBlocks(const sSetBlockVector & a_Blocks)
{
    cCSLock Lock(m_CSChunks);
    for (sSetBlockVector::const_iterator itr = a_Blocks.begin(); itr != a_Blocks.end(); ++itr)
    {
        const auto Chunk = FindChunk(itr->m_ChunkX, itr->m_ChunkZ);
        if ((Chunk == nullptr) || !Chunk->IsValid())
        {
            continue;
        }
        Vector3i relPos(itr->m_RelX, itr->m_RelY, itr->m_RelZ);
        switch (Chunk->GetBlock(relPos))
        {
            CASE_TREE_OVERWRITTEN_BLOCKS:
            {
                Chunk->SetBlock(relPos, itr->m_BlockType, itr->m_BlockMeta);
                break;
            }
            case E_BLOCK_LEAVES:
            case E_BLOCK_NEW_LEAVES:
            {
                if ((itr->m_BlockType == E_BLOCK_LOG) || (itr->m_BlockType == E_BLOCK_NEW_LOG))
                {
                    Chunk->SetBlock(relPos, itr->m_BlockType, itr->m_BlockMeta);
                }
                break;
            }
        }
    }  // for itr - a_Blocks[]
}
 
 
 
 
 
EMCSBiome cChunkMap::GetBiomeAt(int a_BlockX, int a_BlockZ) const
{
    int ChunkX, ChunkZ, X = a_BlockX, Y = 0, Z = a_BlockZ;
    cChunkDef::AbsoluteToRelative(X, Y, Z, ChunkX, ChunkZ);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        return Chunk->GetBiomeAt(X, Z);
    }
    return EMCSBiome::biInvalidBiome;
}
 
 
 
 
 
bool cChunkMap::SetBiomeAt(int a_BlockX, int a_BlockZ, EMCSBiome a_Biome)
{
    int ChunkX, ChunkZ, X = a_BlockX, Y = 0, Z = a_BlockZ;
    cChunkDef::AbsoluteToRelative(X, Y, Z, ChunkX, ChunkZ);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk != nullptr) && Chunk->IsValid())
    {
        Chunk->SetBiomeAt(X, Z, a_Biome);
        return true;
    }
    return false;
}
 
 
 
 
 
bool cChunkMap::SetAreaBiome(int a_MinX, int a_MaxX, int a_MinZ, int a_MaxZ, EMCSBiome a_Biome)
{
    // Translate coords to relative:
    int Y = 0;
    int MinChunkX, MinChunkZ, MinX = a_MinX, MinZ = a_MinZ;
    int MaxChunkX, MaxChunkZ, MaxX = a_MaxX, MaxZ = a_MaxZ;
    cChunkDef::AbsoluteToRelative(MinX, Y, MinZ, MinChunkX, MinChunkZ);
    cChunkDef::AbsoluteToRelative(MaxX, Y, MaxZ, MaxChunkX, MaxChunkZ);
 
    // Go through all chunks, set:
    bool res = true;
    cCSLock Lock(m_CSChunks);
    for (int x = MinChunkX; x <= MaxChunkX; x++)
    {
        int MinRelX = (x == MinChunkX) ? MinX : 0;
        int MaxRelX = (x == MaxChunkX) ? MaxX : cChunkDef::Width - 1;
        for (int z = MinChunkZ; z <= MaxChunkZ; z++)
        {
            int MinRelZ = (z == MinChunkZ) ? MinZ : 0;
            int MaxRelZ = (z == MaxChunkZ) ? MaxZ : cChunkDef::Width - 1;
            const auto Chunk = FindChunk(x, z);
            if ((Chunk != nullptr) && Chunk->IsValid())
            {
                Chunk->SetAreaBiome(MinRelX, MaxRelX, MinRelZ, MaxRelZ, a_Biome);
            }
            else
            {
                res = false;
            }
        }  // for z
    }  // for x
    return res;
}
 
 
 
 
 
bool cChunkMap::GetBlocks(sSetBlockVector & a_Blocks, bool a_ContinueOnFailure)
{
    bool res = true;
    cCSLock Lock(m_CSChunks);
    for (sSetBlockVector::iterator itr = a_Blocks.begin(); itr != a_Blocks.end(); ++itr)
    {
        const auto Chunk = FindChunk(itr->m_ChunkX, itr->m_ChunkZ);
        if ((Chunk == nullptr) || !Chunk->IsValid())
        {
            if (!a_ContinueOnFailure)
            {
                return false;
            }
            res = false;
            continue;
        }
        if (!cChunkDef::IsValidHeight(itr->GetRelativePos()))
        {
            continue;
        }
        itr->m_BlockType = Chunk->GetBlock(itr->m_RelX, itr->m_RelY, itr->m_RelZ);
        itr->m_BlockMeta = Chunk->GetMeta(itr->m_RelX, itr->m_RelY, itr->m_RelZ);
    }
    return res;
}
 
 
 
 
 
bool cChunkMap::DigBlock(Vector3i a_BlockPos)
{
    auto chunkCoords = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkCoords);
 
    {
        cCSLock Lock(m_CSChunks);
        const auto Chunk = FindChunk(chunkCoords.m_ChunkX, chunkCoords.m_ChunkZ);
        if ((Chunk == nullptr) || !Chunk->IsValid())
        {
            return false;
        }
 
        Chunk->SetBlock(relPos, E_BLOCK_AIR, 0);
    }
    return true;
}
 
 
 
 
 
cItems cChunkMap::PickupsFromBlock(Vector3i a_BlockPos, const cEntity * a_Digger, const cItem * a_Tool)
{
    auto chunkCoords = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkCoords);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkCoords.m_ChunkX, chunkCoords.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return {};
    }
    return Chunk->PickupsFromBlock(relPos, a_Digger, a_Tool);
}
 
 
 
 
 
void cChunkMap::SendBlockTo(int a_X, int a_Y, int a_Z, const cPlayer & a_Player)
{
    int ChunkX, ChunkZ;
    cChunkDef::AbsoluteToRelative(a_X, a_Y, a_Z, ChunkX, ChunkZ);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkX, ChunkZ);
    if ((Chunk != nullptr) && (Chunk->IsValid()))
    {
        Chunk->SendBlockTo(a_X, a_Y, a_Z, a_Player.GetClientHandle());
    }
}
 
 
 
 
 
void cChunkMap::CompareChunkClients(int a_ChunkX1, int a_ChunkZ1, int a_ChunkX2, int a_ChunkZ2, cClientDiffCallback & a_Callback)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk1 = FindChunk(a_ChunkX1, a_ChunkZ1);
    if (Chunk1 == nullptr)
    {
        return;
    }
    const auto Chunk2 = FindChunk(a_ChunkX2, a_ChunkZ2);
    if (Chunk2 == nullptr)
    {
        return;
    }
 
    CompareChunkClients(Chunk1, Chunk2, a_Callback);
}
 
 
 
 
 
void cChunkMap::CompareChunkClients(cChunk * a_Chunk1, cChunk * a_Chunk2, cClientDiffCallback & a_Callback)
{
    const auto & Clients1 = a_Chunk1->GetAllClients();
    const auto & Clients2 = a_Chunk2->GetAllClients();
 
    // Find "removed" clients:
    for (auto * Client : Clients1)
    {
        bool Found = (std::find(Clients2.begin(), Clients2.end(), Client) != Clients2.end());
        if (!Found)
        {
            a_Callback.Removed(Client);
        }
    }  // for Client - Clients1[]
 
    // Find "added" clients:
    for (auto * Client : Clients2)
    {
        bool Found = (std::find(Clients1.begin(), Clients1.end(), Client) != Clients1.end());
        if (!Found)
        {
            a_Callback.Added(Client);
        }
    }  // for Client - Clients2[]
}
 
 
 
 
 
bool cChunkMap::AddChunkClient(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
{
    cCSLock Lock(m_CSChunks);
    return GetChunk(a_ChunkX, a_ChunkZ).AddClient(a_Client);
}
 
 
 
 
 
void cChunkMap::RemoveChunkClient(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    ASSERT(Chunk != nullptr);
    Chunk->RemoveClient(a_Client);
}
 
 
 
 
 
void cChunkMap::RemoveClientFromChunks(cClientHandle * a_Client)
{
    cCSLock Lock(m_CSChunks);
    for (auto & Chunk : m_Chunks)
    {
        Chunk.second.RemoveClient(a_Client);
    }
}
 
 
 
 
 
void cChunkMap::AddEntity(OwnedEntity a_Entity)
{
    cCSLock Lock(m_CSChunks);
    if (FindChunk(a_Entity->GetChunkX(), a_Entity->GetChunkZ()) == nullptr)
    {
        LOGWARNING("%s: Entity at %p (%s, ID %d) spawning in a non-existent chunk.",
            __FUNCTION__, static_cast<void *>(a_Entity.get()), a_Entity->GetClass(), a_Entity->GetUniqueID()
        );
    }
 
    const auto EntityPtr = a_Entity.get();
    ASSERT(EntityPtr->GetWorld() == m_World);
 
    auto & Chunk = ConstructChunk(a_Entity->GetChunkX(), a_Entity->GetChunkZ());
    Chunk.AddEntity(std::move(a_Entity));
 
    EntityPtr->OnAddToWorld(*m_World);
    ASSERT(!EntityPtr->IsTicking());
    EntityPtr->SetIsTicking(true);
 
    cPluginManager::Get()->CallHookSpawnedEntity(*m_World, *EntityPtr);
}
 
 
 
 
 
void cChunkMap::AddPlayer(std::unique_ptr<cPlayer> a_Player)
{
    cCSLock Lock(m_CSChunks);
    auto & Chunk = ConstructChunk(a_Player->GetChunkX(), a_Player->GetChunkZ());  // Always construct the chunk for players
    ASSERT(!Chunk.HasEntity(a_Player->GetUniqueID()));
    Chunk.AddEntity(std::move(a_Player));
}
 
 
 
 
 
bool cChunkMap::HasEntity(UInt32 a_UniqueID) const
{
    cCSLock Lock(m_CSChunks);
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid() && Chunk.second.HasEntity(a_UniqueID))
        {
            return true;
        }
    }
    return false;
}
 
 
 
 
 
OwnedEntity cChunkMap::RemoveEntity(cEntity & a_Entity)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = a_Entity.GetParentChunk();
 
    if (Chunk == nullptr)
    {
        return nullptr;
    }
 
    // Remove the entity no matter whether the chunk itself is valid or not (#1190)
    return Chunk->RemoveEntity(a_Entity);
}
 
 
 
 
 
bool cChunkMap::ForEachEntity(cEntityCallback a_Callback) const
{
    cCSLock Lock(m_CSChunks);
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid() && !Chunk.second.ForEachEntity(a_Callback))
        {
            return false;
        }
    }
    return true;
}
 
 
 
 
 
bool cChunkMap::ForEachEntityInChunk(int a_ChunkX, int a_ChunkZ, cEntityCallback a_Callback)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    return Chunk->ForEachEntity(a_Callback);
}
 
 
 
 
 
bool cChunkMap::ForEachEntityInBox(const cBoundingBox & a_Box, cEntityCallback a_Callback)
{
    // Calculate the chunk range for the box:
    int MinChunkX = FloorC(a_Box.GetMinX() / cChunkDef::Width);
    int MinChunkZ = FloorC(a_Box.GetMinZ() / cChunkDef::Width);
    int MaxChunkX = FloorC((a_Box.GetMaxX() + cChunkDef::Width) / cChunkDef::Width);
    int MaxChunkZ = FloorC((a_Box.GetMaxZ() + cChunkDef::Width) / cChunkDef::Width);
 
    // Iterate over each chunk in the range:
    cCSLock Lock(m_CSChunks);
    for (int z = MinChunkZ; z <= MaxChunkZ; z++)
    {
        for (int x = MinChunkX; x <= MaxChunkX; x++)
        {
            const auto Chunk = FindChunk(x, z);
            if ((Chunk == nullptr) || !Chunk->IsValid())
            {
                continue;
            }
            if (!Chunk->ForEachEntityInBox(a_Box, a_Callback))
            {
                return false;
            }
        }  // for x
    }  // for z
    return true;
}
 
 
 
 
 
bool cChunkMap::DoWithEntityByID(UInt32 a_UniqueID, cEntityCallback a_Callback) const
{
    cCSLock Lock(m_CSChunks);
    bool res = false;
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid() && Chunk.second.DoWithEntityByID(a_UniqueID, a_Callback, res))
        {
            return res;
        }
    }
    return false;
}
 
 
 
 
 
bool cChunkMap::ForEachBlockEntityInChunk(int a_ChunkX, int a_ChunkZ, cBlockEntityCallback a_Callback)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    return Chunk->ForEachBlockEntity(a_Callback);
}
 
 
 
 
 
bool cChunkMap::DoWithBlockEntityAt(const Vector3i a_Position, cBlockEntityCallback a_Callback)
{
    const auto ChunkPosition = cChunkDef::BlockToChunk(a_Position);
    const auto Relative = cChunkDef::AbsoluteToRelative(a_Position, ChunkPosition);
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkPosition.m_ChunkX, ChunkPosition.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return false;
    }
    return Chunk->DoWithBlockEntityAt(Relative, a_Callback);
}
 
 
 
 
 
void cChunkMap::PrepareChunk(int a_ChunkX, int a_ChunkZ, std::unique_ptr<cChunkCoordCallback> a_Callback)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
 
    // If the chunk is not prepared, queue it in the lighting thread, that will do all the needed processing:
    if ((Chunk == nullptr) || !Chunk->IsValid() || !Chunk->IsLightValid())
    {
        m_World->GetLightingThread().QueueChunk(a_ChunkX, a_ChunkZ, std::move(a_Callback));
        return;
    }
 
    // The chunk is present and lit, just call the callback, report as success:
    if (a_Callback != nullptr)
    {
        a_Callback->Call({a_ChunkX, a_ChunkZ}, true);
    }
}
 
 
 
 
 
void cChunkMap::GenerateChunk(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    GetChunk(a_ChunkX, a_ChunkZ);  // Touches the chunk, loading or generating it
}
 
 
 
 
 
void cChunkMap::ChunkLoadFailed(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    ASSERT(Chunk != nullptr);  // Chunk cannot have unloaded since it is marked as queued
    Chunk->MarkLoadFailed();
}
 
 
 
 
 
void cChunkMap::MarkChunkRegenerating(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    ConstructChunk(a_ChunkX, a_ChunkZ).MarkRegenerating();
}
 
 
 
 
 
bool cChunkMap::IsChunkLighted(int a_ChunkX, int a_ChunkZ)
{
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(a_ChunkX, a_ChunkZ);
    if (Chunk == nullptr)
    {
        // Not present
        return false;
    }
    return Chunk->IsLightValid();
}
 
 
 
 
 
bool cChunkMap::ForEachChunkInRect(int a_MinChunkX, int a_MaxChunkX, int a_MinChunkZ, int a_MaxChunkZ, cChunkDataCallback & a_Callback)
{
    bool Result = true;
    cCSLock Lock(m_CSChunks);
    for (int z = a_MinChunkZ; z <= a_MaxChunkZ; z++)
    {
        for (int x = a_MinChunkX; x <= a_MaxChunkX; x++)
        {
            const auto Chunk = FindChunk(x, z);
            if ((Chunk == nullptr) || !Chunk->IsValid())
            {
                // Not present / not valid
                Result = false;
                continue;
            }
            if (!a_Callback.Coords(x, z))
            {
                continue;
            }
            Chunk->GetAllData(a_Callback);
        }
    }
    return Result;
}
 
 
 
 
 
bool cChunkMap::ForEachLoadedChunk(cFunctionRef<bool(int, int)> a_Callback) const
{
    cCSLock Lock(m_CSChunks);
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid())
        {
            if (a_Callback(Chunk.first.m_ChunkX, Chunk.first.m_ChunkZ))
            {
                return false;
            }
        }
    }
    return true;
}
 
 
 
 
 
bool cChunkMap::WriteBlockArea(cBlockArea & a_Area, int a_MinBlockX, int a_MinBlockY, int a_MinBlockZ, int a_DataTypes)
{
    // Convert block coords to chunks coords:
    int MinChunkX, MaxChunkX;
    int MinChunkZ, MaxChunkZ;
    int MinBlockX = a_MinBlockX;
    int MinBlockY = a_MinBlockY;
    int MinBlockZ = a_MinBlockZ;
    int MaxBlockX = a_MinBlockX + a_Area.GetSizeX();
    int MaxBlockY = a_MinBlockY + a_Area.GetSizeY();
    int MaxBlockZ = a_MinBlockZ + a_Area.GetSizeZ();
    cChunkDef::AbsoluteToRelative(MinBlockX, MinBlockY, MinBlockZ, MinChunkX, MinChunkZ);
    cChunkDef::AbsoluteToRelative(MaxBlockX, MaxBlockY, MaxBlockZ, MaxChunkX, MaxChunkZ);
 
    // Iterate over chunks, write data into each:
    bool Result = true;
    cCSLock Lock(m_CSChunks);
    for (int z = MinChunkZ; z <= MaxChunkZ; z++)
    {
        for (int x = MinChunkX; x <= MaxChunkX; x++)
        {
            const auto Chunk = FindChunk(x, z);
            if ((Chunk == nullptr) || !Chunk->IsValid())
            {
                // Not present / not valid
                Result = false;
                continue;
            }
            Chunk->WriteBlockArea(a_Area, a_MinBlockX, a_MinBlockY, a_MinBlockZ, a_DataTypes);
        }  // for x
    }  // for z
    return Result;
}
 
 
 
 
 
void cChunkMap::GetChunkStats(int & a_NumChunksValid, int & a_NumChunksDirty) const
{
    a_NumChunksValid = 0;
    a_NumChunksDirty = 0;
    cCSLock Lock(m_CSChunks);
    for (const auto & Chunk : m_Chunks)
    {
        a_NumChunksValid++;
        if (Chunk.second.IsDirty())
        {
            a_NumChunksDirty++;
        }
    }
}
 
 
 
 
 
int cChunkMap::GrowPlantAt(Vector3i a_BlockPos, int a_NumStages)
{
    auto chunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto relPos = cChunkDef::AbsoluteToRelative(a_BlockPos, chunkPos);
    cCSLock lock(m_CSChunks);
    const auto Chunk = FindChunk(chunkPos.m_ChunkX, chunkPos.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return 0;
    }
    return Chunk->GrowPlantAt(relPos, a_NumStages);
}
 
 
 
 
 
void cChunkMap::SetNextBlockToTick(const Vector3i a_BlockPos)
{
    auto ChunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto RelPos = cChunkDef::AbsoluteToRelative(a_BlockPos, ChunkPos);
 
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkPos.m_ChunkX, ChunkPos.m_ChunkZ);
    if (Chunk != nullptr)
    {
        Chunk->SetNextBlockToTick(RelPos);
    }
}
 
 
 
 
 
void cChunkMap::CollectMobCensus(cMobCensus & a_ToFill)
{
    cCSLock Lock(m_CSChunks);
    for (auto & Chunk : m_Chunks)
    {
        // We do count every Mobs in the world. But we are assuming that every chunk not loaded by any client
        // doesn't affect us. Normally they should not have mobs because every "too far" mobs despawn
        // If they have (f.i. when player disconnect) we assume we don't have to make them live or despawn
        if (Chunk.second.IsValid() && Chunk.second.HasAnyClients())
        {
            Chunk.second.CollectMobCensus(a_ToFill);
        }
    }
}
 
 
 
 
 
void cChunkMap::SpawnMobs(cMobSpawner & a_MobSpawner)
{
    cCSLock Lock(m_CSChunks);
    for (auto & Chunk : m_Chunks)
    {
        // We only spawn close to players
        if (Chunk.second.IsValid() && Chunk.second.HasAnyClients())
        {
            Chunk.second.SpawnMobs(a_MobSpawner);
        }
    }
}
 
 
 
 
 
void cChunkMap::Tick(std::chrono::milliseconds a_Dt)
{
    cCSLock Lock(m_CSChunks);
 
    // Do the magic of updating the world:
    for (auto & Chunk : m_Chunks)
    {
        if (Chunk.second.ShouldBeTicked())
        {
            Chunk.second.Tick(a_Dt);
        }
    }
 
    // Finally, only after all chunks are ticked, tell the client about all aggregated changes:
    for (auto & Chunk : m_Chunks)
    {
        Chunk.second.BroadcastPendingChanges();
    }
}
 
 
 
 
 
void cChunkMap::TickBlock(const Vector3i a_BlockPos)
{
    auto ChunkPos = cChunkDef::BlockToChunk(a_BlockPos);
    auto RelPos = cChunkDef::AbsoluteToRelative(a_BlockPos, ChunkPos);
    cCSLock Lock(m_CSChunks);
    const auto Chunk = FindChunk(ChunkPos.m_ChunkX, ChunkPos.m_ChunkZ);
    if ((Chunk == nullptr) || !Chunk->IsValid())
    {
        return;
    }
    Chunk->TickBlock(RelPos);
}
 
 
 
 
 
void cChunkMap::UnloadUnusedChunks(void)
{
    cCSLock Lock(m_CSChunks);
    for (auto itr = m_Chunks.begin(); itr != m_Chunks.end();)
    {
        if (
            itr->second.CanUnload() &&  // Can unload
            !cPluginManager::Get()->CallHookChunkUnloading(*GetWorld(), itr->first.m_ChunkX, itr->first.m_ChunkZ)  // Plugins agree
        )
        {
            // First notify plugins:
            cPluginManager::Get()->CallHookChunkUnloaded(*m_World, itr->first.m_ChunkX, itr->first.m_ChunkZ);
 
            // Notify entities within the chunk, while everything's still valid:
            itr->second.OnUnload();
 
            // Kill the chunk:
            itr = m_Chunks.erase(itr);
        }
        else
        {
            ++itr;
        }
    }
}
 
 
 
 
 
void cChunkMap::SaveAllChunks(void) const
{
    cCSLock Lock(m_CSChunks);
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid() && Chunk.second.IsDirty())
        {
            GetWorld()->GetStorage().QueueSaveChunk(Chunk.first.m_ChunkX, Chunk.first.m_ChunkZ);
        }
    }
}
 
 
 
 
 
size_t cChunkMap::GetNumChunks(void) const
{
    cCSLock Lock(m_CSChunks);
    return m_Chunks.size();
}
 
 
 
 
 
size_t cChunkMap::GetNumUnusedDirtyChunks(void) const
{
    cCSLock Lock(m_CSChunks);
    size_t res = 0;
    for (const auto & Chunk : m_Chunks)
    {
        if (Chunk.second.IsValid() && Chunk.second.CanUnloadAfterSaving())
        {
            res += 1;
        }
    }
    return res;
}
 
 
 
 
 
void cChunkMap::ChunkValidated(void)
{
    m_evtChunkValid.Set();
}
 
 
 
 
 
void cChunkMap::SetChunkAlwaysTicked(int a_ChunkX, int a_ChunkZ, bool a_AlwaysTicked)
{
    cCSLock Lock(m_CSChunks);
    GetChunk(a_ChunkX, a_ChunkZ).SetAlwaysTicked(a_AlwaysTicked);
}
 
 
 
 
 
void cChunkMap::TrackInDeadlockDetect(cDeadlockDetect & a_DeadlockDetect, const AString & a_WorldName)
{
    a_DeadlockDetect.TrackCriticalSection(m_CSChunks, fmt::format(FMT_STRING("World {} chunkmap"), a_WorldName));
}
 
 
 
 
 
void cChunkMap::UntrackInDeadlockDetect(cDeadlockDetect & a_DeadlockDetect)
{
    a_DeadlockDetect.UntrackCriticalSection(m_CSChunks);
}
 
 
 
 
 
void cChunkMap::AddChunkStay(cChunkStay & a_ChunkStay)
{
    cCSLock Lock(m_CSChunks);
 
    // Add it to the list:
    ASSERT(std::find(m_ChunkStays.begin(), m_ChunkStays.end(), &a_ChunkStay) == m_ChunkStays.end());  // Has not yet been added
    m_ChunkStays.push_back(&a_ChunkStay);
 
    // Schedule all chunks to be loaded / generated, and mark each as locked:
    const cChunkCoordsVector & WantedChunks = a_ChunkStay.GetChunks();
    for (cChunkCoordsVector::const_iterator itr = WantedChunks.begin(); itr != WantedChunks.end(); ++itr)
    {
        auto & Chunk = GetChunk(itr->m_ChunkX, itr->m_ChunkZ);
        Chunk.Stay(true);
        if (Chunk.IsValid())
        {
            if (a_ChunkStay.ChunkAvailable(itr->m_ChunkX, itr->m_ChunkZ))
            {
                // The chunkstay wants to be deactivated, disable it and bail out:
                a_ChunkStay.Disable();
                return;
            }
        }
    }  // for itr - WantedChunks[]
}
 
 
 
 
 
void cChunkMap::DelChunkStay(cChunkStay & a_ChunkStay)
{
    cCSLock Lock(m_CSChunks);
 
    // Remove from the list of active chunkstays:
    bool HasFound = false;
    for (cChunkStays::iterator itr = m_ChunkStays.begin(), end = m_ChunkStays.end(); itr != end; ++itr)
    {
        if (*itr == &a_ChunkStay)
        {
            m_ChunkStays.erase(itr);
            HasFound = true;
            break;
        }
    }  // for itr - m_ChunkStays[]
 
    if (!HasFound)
    {
        ASSERT(!"Removing a cChunkStay that hasn't been added!");
        return;
    }
 
    // Unmark all contained chunks:
    const cChunkCoordsVector & Chunks = a_ChunkStay.GetChunks();
    for (cChunkCoordsVector::const_iterator itr = Chunks.begin(), end = Chunks.end(); itr != end; ++itr)
    {
        const auto Chunk = FindChunk(itr->m_ChunkX, itr->m_ChunkZ);
        ASSERT(Chunk != nullptr);  // Stayed chunks cannot unload
        Chunk->Stay(false);
    }  // for itr - Chunks[]
    a_ChunkStay.OnDisabled();
}