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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/ChunkDataSerializer.h
parentCompressPacket: reserve CompressedSize, not the uncompressed size (diff)
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Diffstat (limited to 'src/Protocol/ChunkDataSerializer.h')
-rw-r--r--src/Protocol/ChunkDataSerializer.h73
1 files changed, 47 insertions, 26 deletions
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;
} ;