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authorTiger Wang <ziwei.tiger@outlook.com>2020-08-21 19:22:04 +0200
committerTiger Wang <ziwei.tiger@outlook.com>2020-08-21 19:22:04 +0200
commita473e8ba52243a1a2a4f3aac840ed884d994fb0b (patch)
tree529ef1bcc101645ba31d269da8d398bb122a664b /src/Protocol
parentCompressPacket: reserve CompressedSize, not the uncompressed size (diff)
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Diffstat (limited to 'src/Protocol')
-rw-r--r--src/Protocol/ChunkDataSerializer.cpp296
-rw-r--r--src/Protocol/ChunkDataSerializer.h73
2 files changed, 206 insertions, 163 deletions
diff --git a/src/Protocol/ChunkDataSerializer.cpp b/src/Protocol/ChunkDataSerializer.cpp
index 680b9139b..2fd9e1cc2 100644
--- a/src/Protocol/ChunkDataSerializer.cpp
+++ b/src/Protocol/ChunkDataSerializer.cpp
@@ -3,7 +3,6 @@
#include "zlib/zlib.h"
#include "Protocol_1_8.h"
#include "Protocol_1_9.h"
-#include "../ByteBuffer.h"
#include "../ClientHandle.h"
#include "../WorldStorage/FastNBT.h"
@@ -64,17 +63,8 @@ namespace
////////////////////////////////////////////////////////////////////////////////
// cChunkDataSerializer:
-cChunkDataSerializer::cChunkDataSerializer(
- int a_ChunkX,
- int a_ChunkZ,
- const cChunkData & a_Data,
- const unsigned char * a_BiomeData,
- const eDimension a_Dimension
-) :
- m_ChunkX(a_ChunkX),
- m_ChunkZ(a_ChunkZ),
- m_Data(a_Data),
- m_BiomeData(a_BiomeData),
+cChunkDataSerializer::cChunkDataSerializer(const eDimension a_Dimension) :
+ m_Packet(512 KiB),
m_Dimension(a_Dimension)
{
}
@@ -83,30 +73,22 @@ cChunkDataSerializer::cChunkDataSerializer(
-void cChunkDataSerializer::SendToClients(const std::unordered_set<cClientHandle *> & a_SendTo)
+void cChunkDataSerializer::SendToClients(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData, const ClientHandles & a_SendTo)
{
- std::unordered_map<cProtocol::Version, std::vector<cClientHandle *>> ClientProtocolVersions;
-
for (const auto Client : a_SendTo)
{
- const auto ClientProtocol = static_cast<cProtocol::Version>(Client->GetProtocolVersion());
- ClientProtocolVersions[ClientProtocol].emplace_back(Client);
- }
-
- for (const auto & Entry : ClientProtocolVersions)
- {
- switch (Entry.first)
+ switch (static_cast<cProtocol::Version>(Client->GetProtocolVersion()))
{
case cProtocol::Version::v1_8_0:
{
- Serialize47(Entry.second);
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v47);
continue;
}
case cProtocol::Version::v1_9_0:
case cProtocol::Version::v1_9_1:
case cProtocol::Version::v1_9_2:
{
- Serialize107(Entry.second);
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v107);
continue;
}
case cProtocol::Version::v1_9_4:
@@ -117,106 +99,161 @@ void cChunkDataSerializer::SendToClients(const std::unordered_set<cClientHandle
case cProtocol::Version::v1_12_1:
case cProtocol::Version::v1_12_2:
{
- Serialize110(Entry.second);
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v110);
continue;
}
case cProtocol::Version::v1_13:
{
- Serialize393<&Palette393>(Entry.second); // This version didn't last very long xD
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v393); // This version didn't last very long xD
continue;
}
case cProtocol::Version::v1_13_1:
case cProtocol::Version::v1_13_2:
{
- Serialize393<&Palette401>(Entry.second);
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v401);
continue;
}
case cProtocol::Version::v1_14:
{
- Serialize477(Entry.second);
+ Serialize(Client, a_ChunkX, a_ChunkZ, a_Data, a_BiomeData, CacheVersion::v477);
continue;
}
}
UNREACHABLE("Unknown chunk data serialization version");
}
+
+ // Our cache is only persistent during the function call:
+ for (auto & Cache : m_Cache)
+ {
+ Cache.Engaged = false;
+ }
}
-void cChunkDataSerializer::Serialize47(const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::Serialize(cClientHandle * a_Client, const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData, const CacheVersion a_CacheVersion)
+{
+ auto & Cache = m_Cache[static_cast<size_t>(a_CacheVersion)];
+ if (Cache.Engaged)
+ {
+ // Success! We've done it already, just re-use:
+ a_Client->SendChunkData(a_ChunkX, a_ChunkZ, Cache.ToSend);
+ return;
+ }
+
+ switch (a_CacheVersion)
+ {
+ case CacheVersion::v47:
+ {
+ Serialize47(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ case CacheVersion::v107:
+ {
+ Serialize107(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ case CacheVersion::v110:
+ {
+ Serialize110(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ case CacheVersion::v393:
+ {
+ Serialize393<&Palette393>(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ case CacheVersion::v401:
+ {
+ Serialize393<&Palette401>(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ case CacheVersion::v477:
+ {
+ Serialize477(a_ChunkX, a_ChunkZ, a_Data, a_BiomeData);
+ break;
+ }
+ }
+
+ CompressPacketInto(Cache);
+ ASSERT(Cache.Engaged); // Cache must be populated now
+ a_Client->SendChunkData(a_ChunkX, a_ChunkZ, Cache.ToSend);
+}
+
+
+
+
+
+inline void cChunkDataSerializer::Serialize47(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData)
{
// This function returns the fully compressed packet (including packet size), not the raw packet!
// Create the packet:
- cByteBuffer Packet(512 KiB);
- Packet.WriteVarInt32(0x21); // Packet id (Chunk Data packet)
- Packet.WriteBEInt32(m_ChunkX);
- Packet.WriteBEInt32(m_ChunkZ);
- Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
- Packet.WriteBEUInt16(m_Data.GetSectionBitmask());
+ m_Packet.WriteVarInt32(0x21); // Packet id (Chunk Data packet)
+ m_Packet.WriteBEInt32(a_ChunkX);
+ m_Packet.WriteBEInt32(a_ChunkZ);
+ m_Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
+ m_Packet.WriteBEUInt16(a_Data.GetSectionBitmask());
// Write the chunk size:
const int BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
UInt32 ChunkSize = (
- m_Data.NumPresentSections() * cChunkData::SectionBlockCount * 3 + // Blocks and lighting
+ a_Data.NumPresentSections() * cChunkData::SectionBlockCount * 3 + // Blocks and lighting
BiomeDataSize // Biome data
);
- Packet.WriteVarInt32(ChunkSize);
+ m_Packet.WriteVarInt32(ChunkSize);
// Chunk written as seperate arrays of (blocktype + meta), blocklight and skylight
// each array stores all present sections of the same kind packed together
// Write the block types to the packet:
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
for (size_t BlockIdx = 0; BlockIdx != cChunkData::SectionBlockCount; ++BlockIdx)
{
BLOCKTYPE BlockType = a_Section.m_BlockTypes[BlockIdx] & 0xFF;
NIBBLETYPE BlockMeta = a_Section.m_BlockMetas[BlockIdx / 2] >> ((BlockIdx & 1) * 4) & 0x0f;
- Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType << 4) | BlockMeta);
- Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType >> 4));
+ m_Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType << 4) | BlockMeta);
+ m_Packet.WriteBEUInt8(static_cast<unsigned char>(BlockType >> 4));
}
}
);
// Write the block lights:
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
+ m_Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
}
);
// Write the sky lights:
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
+ m_Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
}
);
// Write the biome data:
- Packet.WriteBuf(m_BiomeData, BiomeDataSize);
-
- CompressAndSend(Packet, a_SendTo);
+ m_Packet.WriteBuf(a_BiomeData, BiomeDataSize);
}
-void cChunkDataSerializer::Serialize107(const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::Serialize107(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData)
{
// This function returns the fully compressed packet (including packet size), not the raw packet!
// Create the packet:
- cByteBuffer Packet(512 KiB);
- Packet.WriteVarInt32(0x20); // Packet id (Chunk Data packet)
- Packet.WriteBEInt32(m_ChunkX);
- Packet.WriteBEInt32(m_ChunkZ);
- Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
- Packet.WriteVarInt32(m_Data.GetSectionBitmask());
+ m_Packet.WriteVarInt32(0x20); // Packet id (Chunk Data packet)
+ m_Packet.WriteBEInt32(a_ChunkX);
+ m_Packet.WriteBEInt32(a_ChunkZ);
+ m_Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
+ m_Packet.WriteVarInt32(a_Data.GetSectionBitmask());
// Write the chunk size:
const UInt8 BitsPerEntry = 13;
const size_t ChunkSectionDataArraySize = (cChunkData::SectionBlockCount * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
@@ -236,50 +273,47 @@ void cChunkDataSerializer::Serialize107(const std::vector<cClientHandle *> & a_S
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
size_t ChunkSize = (
- ChunkSectionSize * m_Data.NumPresentSections() +
+ ChunkSectionSize * a_Data.NumPresentSections() +
BiomeDataSize
);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
// Write each chunk section...
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBEUInt8(BitsPerEntry);
- Packet.WriteVarInt32(0); // Palette length is 0
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
- WriteSectionDataSeamless<&PaletteLegacy>(Packet, a_Section, BitsPerEntry);
+ m_Packet.WriteBEUInt8(BitsPerEntry);
+ m_Packet.WriteVarInt32(0); // Palette length is 0
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
+ WriteSectionDataSeamless<&PaletteLegacy>(a_Section, BitsPerEntry);
// Write lighting:
- Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
+ m_Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
if (m_Dimension == dimOverworld)
{
// Skylight is only sent in the overworld; the nether and end do not use it
- Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
+ m_Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
}
}
);
// Write the biome data
- Packet.WriteBuf(m_BiomeData, BiomeDataSize);
-
- CompressAndSend(Packet, a_SendTo);
+ m_Packet.WriteBuf(a_BiomeData, BiomeDataSize);
}
-void cChunkDataSerializer::Serialize110(const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::Serialize110(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData)
{
// This function returns the fully compressed packet (including packet size), not the raw packet!
// Create the packet:
- cByteBuffer Packet(512 KiB);
- Packet.WriteVarInt32(0x20); // Packet id (Chunk Data packet)
- Packet.WriteBEInt32(m_ChunkX);
- Packet.WriteBEInt32(m_ChunkZ);
- Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
- Packet.WriteVarInt32(m_Data.GetSectionBitmask());
+ m_Packet.WriteVarInt32(0x20); // Packet id (Chunk Data packet)
+ m_Packet.WriteBEInt32(a_ChunkX);
+ m_Packet.WriteBEInt32(a_ChunkZ);
+ m_Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
+ m_Packet.WriteVarInt32(a_Data.GetSectionBitmask());
// Write the chunk size:
const UInt8 BitsPerEntry = 13;
const size_t ChunkSectionDataArraySize = (cChunkData::SectionBlockCount * BitsPerEntry) / 8 / 8; // Convert from bit count to long count
@@ -299,36 +333,34 @@ void cChunkDataSerializer::Serialize110(const std::vector<cClientHandle *> & a_S
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
size_t ChunkSize = (
- ChunkSectionSize * m_Data.NumPresentSections() +
+ ChunkSectionSize * a_Data.NumPresentSections() +
BiomeDataSize
);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
// Write each chunk section...
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBEUInt8(BitsPerEntry);
- Packet.WriteVarInt32(0); // Palette length is 0
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
- WriteSectionDataSeamless<&PaletteLegacy>(Packet, a_Section, BitsPerEntry);
+ m_Packet.WriteBEUInt8(BitsPerEntry);
+ m_Packet.WriteVarInt32(0); // Palette length is 0
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
+ WriteSectionDataSeamless<&PaletteLegacy>(a_Section, BitsPerEntry);
// Write lighting:
- Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
+ m_Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
if (m_Dimension == dimOverworld)
{
// Skylight is only sent in the overworld; the nether and end do not use it
- Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
+ m_Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
}
}
);
// Write the biome data
- Packet.WriteBuf(m_BiomeData, BiomeDataSize);
+ m_Packet.WriteBuf(a_BiomeData, BiomeDataSize);
// Identify 1.9.4's tile entity list as empty
- Packet.WriteBEUInt8(0);
-
- CompressAndSend(Packet, a_SendTo);
+ m_Packet.WriteBEUInt8(0);
}
@@ -336,24 +368,23 @@ void cChunkDataSerializer::Serialize110(const std::vector<cClientHandle *> & a_S
template <auto Palette>
-void cChunkDataSerializer::Serialize393(const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::Serialize393(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData)
{
// This function returns the fully compressed packet (including packet size), not the raw packet!
// Create the packet:
- cByteBuffer Packet(512 KiB);
- Packet.WriteVarInt32(0x22); // Packet id (Chunk Data packet)
- Packet.WriteBEInt32(m_ChunkX);
- Packet.WriteBEInt32(m_ChunkZ);
- Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
- Packet.WriteVarInt32(m_Data.GetSectionBitmask());
+ m_Packet.WriteVarInt32(0x22); // Packet id (Chunk Data packet)
+ m_Packet.WriteBEInt32(a_ChunkX);
+ m_Packet.WriteBEInt32(a_ChunkZ);
+ m_Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
+ m_Packet.WriteVarInt32(a_Data.GetSectionBitmask());
// Write the chunk size in bytes:
const UInt8 BitsPerEntry = 14;
const size_t ChunkSectionDataArraySize = (cChunkData::SectionBlockCount * BitsPerEntry) / 8 / 8;
size_t ChunkSectionSize = (
1 + // Bits per entry, BEUInt8, 1 byte
- Packet.GetVarIntSize(static_cast<UInt32>(ChunkSectionDataArraySize)) + // Field containing "size of whole section", VarInt32, variable size
+ m_Packet.GetVarIntSize(static_cast<UInt32>(ChunkSectionDataArraySize)) + // Field containing "size of whole section", VarInt32, variable size
ChunkSectionDataArraySize * 8 + // Actual section data, lots of bytes (multiplier 1 long = 8 bytes)
cChunkData::SectionBlockCount / 2 // Size of blocklight which is always sent
);
@@ -366,24 +397,24 @@ void cChunkDataSerializer::Serialize393(const std::vector<cClientHandle *> & a_S
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
size_t ChunkSize = (
- ChunkSectionSize * m_Data.NumPresentSections() +
+ ChunkSectionSize * a_Data.NumPresentSections() +
BiomeDataSize * 4 // Biome data now BE ints
);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
// Write each chunk section...
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBEUInt8(BitsPerEntry);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
- WriteSectionDataSeamless<Palette>(Packet, a_Section, BitsPerEntry);
+ m_Packet.WriteBEUInt8(BitsPerEntry);
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
+ WriteSectionDataSeamless<Palette>(a_Section, BitsPerEntry);
// Write lighting:
- Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
+ m_Packet.WriteBuf(a_Section.m_BlockLight, sizeof(a_Section.m_BlockLight));
if (m_Dimension == dimOverworld)
{
// Skylight is only sent in the overworld; the nether and end do not use it
- Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
+ m_Packet.WriteBuf(a_Section.m_BlockSkyLight, sizeof(a_Section.m_BlockSkyLight));
}
}
);
@@ -391,30 +422,27 @@ void cChunkDataSerializer::Serialize393(const std::vector<cClientHandle *> & a_S
// Write the biome data
for (size_t i = 0; i != BiomeDataSize; i++)
{
- Packet.WriteBEUInt32(static_cast<UInt32>(m_BiomeData[i]) & 0xff);
+ m_Packet.WriteBEUInt32(static_cast<UInt32>(a_BiomeData[i]) & 0xff);
}
// Identify 1.9.4's tile entity list as empty
- Packet.WriteVarInt32(0);
-
- CompressAndSend(Packet, a_SendTo);
+ m_Packet.WriteVarInt32(0);
}
-void cChunkDataSerializer::Serialize477(const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::Serialize477(const int a_ChunkX, const int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData)
{
// This function returns the fully compressed packet (including packet size), not the raw packet!
// Create the packet:
- cByteBuffer Packet(512 KiB);
- Packet.WriteVarInt32(0x21); // Packet id (Chunk Data packet)
- Packet.WriteBEInt32(m_ChunkX);
- Packet.WriteBEInt32(m_ChunkZ);
- Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
- Packet.WriteVarInt32(m_Data.GetSectionBitmask());
+ m_Packet.WriteVarInt32(0x21); // Packet id (Chunk Data packet)
+ m_Packet.WriteBEInt32(a_ChunkX);
+ m_Packet.WriteBEInt32(a_ChunkZ);
+ m_Packet.WriteBool(true); // "Ground-up continuous", or rather, "biome data present" flag
+ m_Packet.WriteVarInt32(a_Data.GetSectionBitmask());
{
cFastNBTWriter Writer;
@@ -422,7 +450,7 @@ void cChunkDataSerializer::Serialize477(const std::vector<cClientHandle *> & a_S
// std::array<Int64, 36> Longz = {};
// Writer.AddLongArray("MOTION_BLOCKING", Longz.data(), Longz.size());
Writer.Finish();
- Packet.Write(Writer.GetResult().data(), Writer.GetResult().size());
+ m_Packet.Write(Writer.GetResult().data(), Writer.GetResult().size());
}
// Write the chunk size in bytes:
@@ -431,37 +459,35 @@ void cChunkDataSerializer::Serialize477(const std::vector<cClientHandle *> & a_S
const size_t ChunkSectionSize = (
2 + // Block count, BEInt16, 2 bytes
1 + // Bits per entry, BEUInt8, 1 byte
- Packet.GetVarIntSize(static_cast<UInt32>(ChunkSectionDataArraySize)) + // Field containing "size of whole section", VarInt32, variable size
+ m_Packet.GetVarIntSize(static_cast<UInt32>(ChunkSectionDataArraySize)) + // Field containing "size of whole section", VarInt32, variable size
ChunkSectionDataArraySize * 8 // Actual section data, lots of bytes (multiplier 1 long = 8 bytes)
);
const size_t BiomeDataSize = cChunkDef::Width * cChunkDef::Width;
const size_t ChunkSize = (
- ChunkSectionSize * m_Data.NumPresentSections() +
+ ChunkSectionSize * a_Data.NumPresentSections() +
BiomeDataSize * 4 // Biome data now BE ints
);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSize));
// Write each chunk section...
- ForEachSection(m_Data, [&](const cChunkData::sChunkSection & a_Section)
+ ForEachSection(a_Data, [&](const cChunkData::sChunkSection & a_Section)
{
- Packet.WriteBEInt16(-1);
- Packet.WriteBEUInt8(BitsPerEntry);
- Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
- WriteSectionDataSeamless<&Palette477>(Packet, a_Section, BitsPerEntry);
+ m_Packet.WriteBEInt16(-1);
+ m_Packet.WriteBEUInt8(BitsPerEntry);
+ m_Packet.WriteVarInt32(static_cast<UInt32>(ChunkSectionDataArraySize));
+ WriteSectionDataSeamless<&Palette477>(a_Section, BitsPerEntry);
}
);
// Write the biome data
for (size_t i = 0; i != BiomeDataSize; i++)
{
- Packet.WriteBEUInt32(static_cast<UInt32>(m_BiomeData[i]) & 0xff);
+ m_Packet.WriteBEUInt32(static_cast<UInt32>(a_BiomeData[i]) & 0xff);
}
// Identify 1.9.4's tile entity list as empty
- Packet.WriteVarInt32(0);
-
- CompressAndSend(Packet, a_SendTo);
+ m_Packet.WriteVarInt32(0);
}
@@ -469,7 +495,7 @@ void cChunkDataSerializer::Serialize477(const std::vector<cClientHandle *> & a_S
template <auto Palette>
-void cChunkDataSerializer::WriteSectionDataSeamless(cByteBuffer & a_Packet, const cChunkData::sChunkSection & a_Section, const UInt8 a_BitsPerEntry)
+inline void cChunkDataSerializer::WriteSectionDataSeamless(const cChunkData::sChunkSection & a_Section, const UInt8 a_BitsPerEntry)
{
// https://wiki.vg/Chunk_Format#Data_structure
@@ -493,7 +519,7 @@ void cChunkDataSerializer::WriteSectionDataSeamless(cByteBuffer & a_Packet, cons
if (Remaining >= 0)
{
// There were some bits remaining: we've filled the buffer. Flush it:
- a_Packet.WriteBEUInt64(Buffer);
+ m_Packet.WriteBEUInt64(Buffer);
// And write the remaining bits, setting the new BitIndex:
Buffer = Value >> (a_BitsPerEntry - Remaining);
@@ -515,20 +541,16 @@ void cChunkDataSerializer::WriteSectionDataSeamless(cByteBuffer & a_Packet, cons
-void cChunkDataSerializer::CompressAndSend(cByteBuffer & a_Packet, const std::vector<cClientHandle *> & a_SendTo)
+inline void cChunkDataSerializer::CompressPacketInto(ChunkDataCache & a_Cache)
{
- AString PacketData;
- a_Packet.ReadAll(PacketData);
+ m_Packet.ReadAll(a_Cache.PacketData);
+ m_Packet.CommitRead();
- AString ToSend;
- if (!cProtocol_1_8_0::CompressPacket(PacketData, ToSend))
+ if (!cProtocol_1_8_0::CompressPacket(a_Cache.PacketData, a_Cache.ToSend))
{
ASSERT(!"Packet compression failed.");
return;
}
- for (const auto Client : a_SendTo)
- {
- Client->SendChunkData(m_ChunkX, m_ChunkZ, ToSend);
- }
+ a_Cache.Engaged = true;
}
diff --git a/src/Protocol/ChunkDataSerializer.h b/src/Protocol/ChunkDataSerializer.h
index f02bdd4d0..cb39e27d6 100644
--- a/src/Protocol/ChunkDataSerializer.h
+++ b/src/Protocol/ChunkDataSerializer.h
@@ -1,5 +1,6 @@
#pragma once
+#include "../ByteBuffer.h"
#include "../ChunkData.h"
#include "../Defines.h"
@@ -18,47 +19,67 @@ Caches the serialized data for as long as this object lives, so that the same da
other clients using the same protocol. */
class cChunkDataSerializer
{
+ using ClientHandles = std::unordered_set<cClientHandle *>;
+
+ /** Enum to collapse protocol versions into a contiguous index. */
+ enum class CacheVersion
+ {
+ v47,
+ v107,
+ v110,
+ v393,
+ v401,
+ v477,
+
+ Count
+ };
+
+ /** A single cache entry containing the raw data, compressed data, and a validity flag. */
+ struct ChunkDataCache
+ {
+ std::string PacketData;
+ std::string ToSend;
+ bool Engaged = false;
+ };
+
public:
- cChunkDataSerializer(
- int a_ChunkX,
- int a_ChunkZ,
- const cChunkData & a_Data,
- const unsigned char * a_BiomeData,
- const eDimension a_Dimension
- );
+ cChunkDataSerializer(eDimension a_Dimension);
- /** For each client, serializes the chunk into their protocol version and sends it. */
- void SendToClients(const std::unordered_set<cClientHandle *> & a_SendTo);
+ /** For each client, serializes the chunk into their protocol version and sends it.
+ Parameters are the coordinates of the chunk to serialise, and the data and biome data read from the chunk. */
+ void SendToClients(int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData, const ClientHandles & a_SendTo);
protected:
- void Serialize47 (const std::vector<cClientHandle *> & a_SendTo); // Release 1.8
- void Serialize107(const std::vector<cClientHandle *> & a_SendTo); // Release 1.9
- void Serialize110(const std::vector<cClientHandle *> & a_SendTo); // Release 1.9.4
+ /** Serialises the given chunk, storing the result into the given cache entry, and sends the data.
+ If the cache entry is already present, simply re-uses it. */
+ inline void Serialize(cClientHandle * a_Client, int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData, CacheVersion a_CacheVersion);
+
+ inline void Serialize47 (int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData); // Release 1.8
+ inline void Serialize107(int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData); // Release 1.9
+ inline void Serialize110(int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData); // Release 1.9.4
template <auto Palette>
- void Serialize393(const std::vector<cClientHandle *> & a_SendTo); // Release 1.13 - 1.13.2
- void Serialize477(const std::vector<cClientHandle *> & a_SendTo); // Release 1.14 - 1.14.4
+ inline void Serialize393(int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData); // Release 1.13 - 1.13.2
+ inline void Serialize477(int a_ChunkX, int a_ChunkZ, const cChunkData & a_Data, const unsigned char * a_BiomeData); // Release 1.14 - 1.14.4
/** Writes all blocks in a chunk section into a series of Int64.
Writes start from the bit directly subsequent to the previous write's end, possibly crossing over to the next Int64. */
template <auto Palette>
- inline void WriteSectionDataSeamless(cByteBuffer & a_Packet, const cChunkData::sChunkSection & a_Section, const UInt8 a_BitsPerEntry);
-
- /** Finalises the data, compresses it if required, and delivers it to all clients. */
- void CompressAndSend(cByteBuffer & a_Packet, const std::vector<cClientHandle *> & a_SendTo);
+ inline void WriteSectionDataSeamless(const cChunkData::sChunkSection & a_Section, const UInt8 a_BitsPerEntry);
- /** The coordinates of the chunk to serialise. */
- int m_ChunkX, m_ChunkZ;
+ /** Finalises the data, compresses it if required, and stores it into cache. */
+ inline void CompressPacketInto(ChunkDataCache & a_Cache);
- /** The data read from the chunk, to be serialized. */
- const cChunkData & m_Data;
+ /** A staging area used to construct the chunk packet, persistent to avoid reallocating. */
+ cByteBuffer m_Packet;
- /** The biomes in the chunk, to be serialized. */
- const unsigned char * m_BiomeData;
-
- /** The dimension where the chunk resides. */
+ /** The dimension for the World this Serializer is tied to. */
const eDimension m_Dimension;
+
+ /** A cache, mapping protocol version to a fully serialised chunk.
+ It is used during a single invocation of SendToClients with more than one client. */
+ std::array<ChunkDataCache, static_cast<size_t>(CacheVersion::Count)> m_Cache;
} ;