ryansnewell
/
mcserver
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
mcserver/source/cChunkMap.cpp

717 lines
19 KiB
C++
Raw Blame History

#include "cChunkMap.h"
#include "cChunk.h"
#include "cMCLogger.h"
#include "cWorld.h"
#include "cRoot.h"
#include "cMakeDir.h"
#ifndef _WIN32
#include <cstring> // memcpy
#include <cstdlib> // abs
#include <math.h> // floorf
#include <stdio.h> // sprintf and stuff
#define sprintf_s( dest, size, format, ... ) sprintf( dest, format, __VA_ARGS__ )
#endif
#include "zlib.h"
#include <json/json.h>
#define USE_MEMCPY
#define LAYER_SIZE (32)
cChunkMap::cChunkMap( int a_Width, int a_Height, cWorld* a_World )
: m_Nodes( new cChunkNode[ a_Width * a_Height ] )
, m_Width( a_Width )
, m_Height( a_Height )
, m_Layers( 0 )
, m_NumLayers( 0 )
, m_World( a_World )
{
}
cChunkMap::~cChunkMap()
{
delete [] m_Nodes;
}
cChunkMap::cChunkNode::cChunkNode()
{
m_Size = 0;
m_Allocated = 0;
m_Chunks = 0;
}
cChunkMap::cChunkNode::~cChunkNode()
{
if( m_Allocated > 0 )
{
for( unsigned int i = 0; i < m_Size; ++i )
{
delete m_Chunks[i];
}
delete [] m_Chunks;
}
// m_Chunks = 0;
// m_Allocated = 0;
// m_Size = 0;
}
void cChunkMap::cChunkNode::push_back( cChunk* a_Chunk )
{
if( m_Allocated == 0 )
{
resize( 1 );
}
if( m_Size >= m_Allocated )
{
resize( m_Allocated*2 );
}
m_Chunks[ m_Size ] = a_Chunk;
m_Size++;
}
void cChunkMap::cChunkNode::resize( unsigned int a_NewSize )
{
cChunk** TempChunks = new cChunk*[a_NewSize];
if( m_Allocated > 0 )
{
#ifdef USE_MEMCPY
memcpy( TempChunks, m_Chunks, sizeof( cChunk* ) * m_Size );
#else
for( unsigned int i = 0; i < a_NewSize; ++i )
TempChunks[i] = m_Chunks[i];
#endif
delete [] m_Chunks;
}
m_Chunks = TempChunks;
m_Allocated = a_NewSize;
}
void cChunkMap::cChunkNode::erase( cChunk* a_Chunk )
{
if( m_Size == 0 ) return;
cChunk** TempChunks = new cChunk*[m_Size];
unsigned int TempIdx = 0;
for( unsigned int i = 0; i < m_Size; ++i )
{
if( m_Chunks[i] != a_Chunk )
{
TempChunks[TempIdx] = m_Chunks[i];
TempIdx++;
}
}
delete [] m_Chunks;
m_Chunks = 0;
if( TempIdx > 0 )
{
m_Chunks = new cChunk*[ TempIdx ];
#ifdef USE_MEMCPY
memcpy( m_Chunks, TempChunks, sizeof( cChunk* ) * TempIdx );
#else
for( unsigned int i = 0; i < TempIdx; ++i )
m_Chunks[i] = TempChunks[i];
#endif
}
delete [] TempChunks;
m_Allocated = TempIdx;
m_Size = TempIdx;
}
cChunkMap::cChunkData* cChunkMap::cChunkLayer::GetChunk( int a_X, int a_Z )
{
const int LocalX = a_X - m_X * LAYER_SIZE;
const int LocalZ = a_Z - m_Z * LAYER_SIZE;
//LOG("LocalX:%i LocalZ:%i", LocalX, LocalZ );
if( LocalX < LAYER_SIZE && LocalZ < LAYER_SIZE && LocalX > -1 && LocalZ > -1 )
return &m_Chunks[ LocalX + LocalZ * LAYER_SIZE ];
return 0;
}
bool cChunkMap::RemoveLayer( cChunkLayer* a_Layer )
{
cChunkLayer* NewLayers = 0;
if( m_NumLayers > 1 )
NewLayers = new cChunkLayer[m_NumLayers-1];
int idx = 0;
bool bExcludedLayer = false;
for( int i = 0; i < m_NumLayers; ++i )
{
if( &m_Layers[i] != a_Layer )
{
if( idx < m_NumLayers-1 )
{
NewLayers[ idx ] = m_Layers[i];
idx++;
}
}
else
bExcludedLayer = true;
}
if( !bExcludedLayer )
{
LOGWARN("Could not remove layer, because layer was not found %i %i", a_Layer->m_X, a_Layer->m_Z);
delete [] NewLayers;
return false;
}
if( m_Layers ) delete [] m_Layers;
m_Layers = NewLayers;
m_NumLayers--;
return true;
}
cChunkMap::cChunkLayer* cChunkMap::AddLayer( const cChunkLayer & a_Layer )
{
cChunkLayer* TempLayers = new cChunkLayer[m_NumLayers+1];
if( m_NumLayers > 0 )
{
memcpy( TempLayers, m_Layers, sizeof( cChunkLayer ) * m_NumLayers );
delete [] m_Layers;
}
m_Layers = TempLayers;
m_Layers[m_NumLayers] = a_Layer;
cChunkLayer* NewLayer = &m_Layers[m_NumLayers];
m_NumLayers++;
return NewLayer;
}
void cChunkMap::AddChunk( cChunk* a_Chunk )
{
/* // OLD
m_Nodes[ MakeHash( a_Chunk->GetPosX(), a_Chunk->GetPosZ() ) ].push_back( a_Chunk );
*/
// NEW
const int LayerX = (int)(floorf((float)a_Chunk->GetPosX() / (float)(LAYER_SIZE)));
const int LayerZ = (int)(floorf((float)a_Chunk->GetPosZ() / (float)(LAYER_SIZE)));
cChunkLayer* FoundLayer = GetLayer( LayerX, LayerZ );
if( !FoundLayer )
{
cChunkLayer NewLayer( LAYER_SIZE*LAYER_SIZE );
NewLayer.m_X = LayerX;
NewLayer.m_Z = LayerZ;
FoundLayer = AddLayer( NewLayer );
LOGWARN("Created new layer %i %i (total layers %i)", LayerX, LayerZ, m_NumLayers );
}
//Get local coordinates in layer
const int LocalX = a_Chunk->GetPosX() - LayerX * LAYER_SIZE;
const int LocalZ = a_Chunk->GetPosZ() - LayerZ * LAYER_SIZE;
if( FoundLayer->m_Chunks[ LocalX + LocalZ * LAYER_SIZE ].m_LiveChunk )
LOGWARN("WARNING: Added chunk to layer while it was already loaded!");
FoundLayer->m_Chunks[ LocalX + LocalZ * LAYER_SIZE ].m_LiveChunk = a_Chunk;
FoundLayer->m_NumChunksLoaded++;
}
void cChunkMap::RemoveChunk( cChunk* a_Chunk )
{
/* // OLD
m_Nodes[ MakeHash( a_Chunk->GetPosX(), a_Chunk->GetPosZ() ) ].erase( a_Chunk );
*/
// NEW
cChunkLayer* Layer = GetLayerForChunk( a_Chunk->GetPosX(), a_Chunk->GetPosZ() );
if( Layer )
{
cChunkData* Data = Layer->GetChunk( a_Chunk->GetPosX(), a_Chunk->GetPosZ() );
if( Data->m_LiveChunk )
{
CompressChunk( Data );
Data->m_LiveChunk = 0; // Set live chunk to 0
}
Layer->m_NumChunksLoaded--;
}
}
void cChunkMap::CompressChunk( cChunkData* a_ChunkData )
{
if( a_ChunkData->m_LiveChunk )
{
// Delete already present compressed data
if( a_ChunkData->m_Compressed ) delete [] a_ChunkData->m_Compressed;
// Get Json data
Json::Value root;
std::string JsonData = "";
a_ChunkData->m_LiveChunk->SaveToJson( root );
if( !root.empty() )
{
Json::StyledWriter writer; // TODO FIXME: change to FastWriter ? :D
JsonData = writer.write( root );
}
unsigned int TotalSize = cChunk::c_BlockDataSize + JsonData.size();
uLongf CompressedSize = compressBound( TotalSize );
a_ChunkData->m_Compressed = new char[CompressedSize];
char* DataSource = a_ChunkData->m_LiveChunk->pGetBlockData();
if( JsonData.size() > 0 )
{
// Move stuff around, so data is aligned in memory
DataSource = new char[TotalSize];
memcpy( DataSource, a_ChunkData->m_LiveChunk->pGetBlockData(), cChunk::c_BlockDataSize );
memcpy( DataSource + cChunk::c_BlockDataSize, JsonData.c_str(), JsonData.size() );
}
int errorcode = compress2( (Bytef*)a_ChunkData->m_Compressed, &CompressedSize, (const Bytef*)DataSource, TotalSize, Z_DEFAULT_COMPRESSION);
if( errorcode != Z_OK )
{
LOGERROR("Error compressing data (%i)", errorcode );
}
a_ChunkData->m_CompressedSize = CompressedSize;
a_ChunkData->m_UncompressedSize = TotalSize;
if( DataSource != a_ChunkData->m_LiveChunk->pGetBlockData() )
delete [] DataSource;
}
}
unsigned int cChunkMap::MakeHash( int a_X, int a_Z )
{
const unsigned int HashX = abs( a_X ) % m_Width;
const unsigned int HashZ = abs( a_Z ) % m_Height;
return HashX + HashZ * m_Width;
}
cChunkMap::cChunkLayer* cChunkMap::GetLayerForChunk( int a_ChunkX, int a_ChunkZ )
{
const int LayerX = (int)(floorf((float)a_ChunkX / (float)(LAYER_SIZE)));
const int LayerZ = (int)(floorf((float)a_ChunkZ / (float)(LAYER_SIZE)));
return GetLayer( LayerX, LayerZ );
}
cChunkMap::cChunkLayer* cChunkMap::GetLayer( int a_LayerX, int a_LayerZ )
{
// Find layer in memory
for( int i = 0; i < m_NumLayers; ++i )
{
if( m_Layers[i].m_X == a_LayerX && m_Layers[i].m_Z == a_LayerZ )
{
return &m_Layers[i];
}
}
// Find layer on disk
cChunkLayer* Layer = LoadLayer( a_LayerX, a_LayerZ );
if( !Layer ) return 0;
cChunkLayer* NewLayer = AddLayer( *Layer );
delete Layer;
return NewLayer;
}
cChunk* cChunkMap::GetChunk( int a_X, int a_Y, int a_Z )
{
/* // OLD
unsigned int Hash = MakeHash( a_X, a_Z );
cChunkNode & Node = m_Nodes[ Hash ];
cChunk** Chunks = Node.GetChunks();
for( unsigned int i = 0; i < Node.size(); ++i )
{
if( Chunks[i]->GetPosX() == a_X && // Check if we found the right chunk
Chunks[i]->GetPosY() == a_Y &&
Chunks[i]->GetPosZ() == a_Z )
{
return Chunks[i];
}
}
*/
// NEW
cChunkLayer* Layer = GetLayerForChunk( a_X, a_Z );
if( Layer )
{
cChunkData* Data = Layer->GetChunk( a_X, a_Z );
if( Data->m_LiveChunk ) return Data->m_LiveChunk;
// Decompress cached chunk
if( Data->m_Compressed )
{
uLongf DestSize = Data->m_UncompressedSize;
char* BlockData = new char[ DestSize ];
int errorcode = uncompress( (Bytef*)BlockData, &DestSize, (Bytef*)Data->m_Compressed, Data->m_CompressedSize );
if( Data->m_UncompressedSize != DestSize )
{
LOGWARN("Lulwtf, expected uncompressed size differs!");
delete [] BlockData;
}
else if( errorcode != Z_OK )
{
LOGERROR("ERROR: Decompressing chunk data! %i", errorcode );
switch( errorcode )
{
case Z_MEM_ERROR:
LOGERROR("Not enough memory");
break;
case Z_BUF_ERROR:
LOGERROR("Not enough room in output buffer");
break;
case Z_DATA_ERROR:
LOGERROR("Input data corrupted or incomplete");
break;
default:
break;
};
delete [] BlockData;
}
else
{
cChunk* Chunk = new cChunk(a_X, a_Y, a_Z, m_World);
memcpy( Chunk->m_BlockData, BlockData, cChunk::c_BlockDataSize );
Chunk->CalculateHeightmap();
Data->m_LiveChunk = Chunk;
Layer->m_NumChunksLoaded++;
if( DestSize > cChunk::c_BlockDataSize ) // We gots some extra data :D
{
LOGINFO("Parsing trailing JSON");
Json::Value root; // will contains the root value after parsing.
Json::Reader reader;
if( !reader.parse( BlockData + cChunk::c_BlockDataSize, root, false ) )
{
LOGERROR("Failed to parse trailing JSON!");
}
else
{
//Json::StyledWriter writer;
//LOGINFO("Trailing Json:" );
//printf("%s", writer.write( root ).c_str() );
Chunk->LoadFromJson( root );
}
}
delete [] BlockData;
delete [] Data->m_Compressed; Data->m_Compressed = 0; Data->m_CompressedSize = 0;
return Chunk;
}
}
}
return 0;
}
void cChunkMap::Tick( float a_Dt )
{
/* // OLD
for( int i = 0; i < m_Width*m_Height; ++i )
{
cChunkNode & Node = m_Nodes[ i ];
cChunk** Chunks = Node.GetChunks();
for( unsigned int i = 0; i < Node.size(); ++i )
{
Chunks[i]->Tick( a_Dt );
}
}
*/
// NEW
for( int l = 0; l < m_NumLayers; ++l )
{
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i )
{
cChunk* Chunk = m_Layers[l].m_Chunks[i].m_LiveChunk;
if( Chunk )
Chunk->Tick( a_Dt );
}
}
}
void cChunkMap::UnloadUnusedChunks()
{
cWorld* World = m_World;
/* // OLD
for( int i = 0; i < m_Width*m_Height; ++i )
{
cChunkNode & Node = m_Nodes[ i ];
cChunk** Chunks = Node.GetChunks();
for( unsigned int i = 0; i < Node.size(); ++i )
{
if( Chunks[i]->GetClients().size() == 0 )
{
Chunks[i]->SaveToDisk();
LOG("Unloading %p", Chunks[i] );
World->RemoveSpread( Chunks[i] );
cChunk* TheChunk = Chunks[i];
RemoveChunk( TheChunk );
delete TheChunk;
//Node.erase( Chunks[i] );
Chunks = Node.GetChunks(); // Chunks pointer is no longer valid, get a new one
}
}
}
*/
// NEW
for( int l = 0; l < m_NumLayers; ++l )
{
cChunkLayer & Layer = m_Layers[l];
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i )
{
cChunk* Chunk = Layer.m_Chunks[i].m_LiveChunk;
if( Chunk && Chunk->GetClients().size() == 0 )
{
Chunk->SaveToDisk();
World->RemoveSpread( Chunk );
RemoveChunk( Chunk );
delete Chunk;
}
}
// Unload layers
if( Layer.m_NumChunksLoaded == 0 )
{
SaveLayer( &Layer );
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i ) // Free all chunk data for layer
{
if( Layer.m_Chunks[i].m_Compressed )
delete [] Layer.m_Chunks[i].m_Compressed;
if( Layer.m_Chunks[i].m_LiveChunk )
delete Layer.m_Chunks[i].m_LiveChunk;
}
if( RemoveLayer( &Layer ) ) l--;
}
else if( Layer.m_NumChunksLoaded < 0 )
{
LOGERROR("WTF! Chunks loaded in layer is %i !!", Layer.m_NumChunksLoaded );
}
}
}
bool cChunkMap::RemoveEntityFromChunk( cEntity & a_Entity, cChunk* a_CalledFrom /* = 0 */ )
{
/* // OLD
for( int i = 0; i < m_Width*m_Height; ++i )
{
cChunkNode & Node = m_Nodes[ i ];
cChunk** Chunks = Node.GetChunks();
for( unsigned int i = 0; i < Node.size(); ++i )
{
if( Chunks[i] != a_CalledFrom )
{
if( Chunks[i]->RemoveEntity( a_Entity, a_CalledFrom ) )
return true;
}
}
}
*/
// NEW
for( int i = 0; i < m_NumLayers; ++i )
{
cChunkLayer & Layer = m_Layers[i];
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i )
{
cChunk* Chunk = Layer.m_Chunks[i].m_LiveChunk;
if( Chunk != a_CalledFrom )
{
if( Chunk && Chunk->RemoveEntity( a_Entity, a_CalledFrom ) )
return true;
}
}
}
LOG("WARNING: Entity was not found in any chunk!");
return false;
}
void cChunkMap::SaveAllChunks()
{
for( int i = 0; i < m_Width*m_Height; ++i )
{
cChunkNode & Node = m_Nodes[ i ];
cChunk** Chunks = Node.GetChunks();
for( unsigned int i = 0; i < Node.size(); ++i )
{
Chunks[i]->SaveToDisk();
}
}
for( int i = 0; i < m_NumLayers; ++i )
{
SaveLayer( &m_Layers[i] );
}
}
/********************************
* Saving and loading
**/
void cChunkMap::SaveLayer( cChunkLayer* a_Layer )
{
std::string WorldName = m_World->GetName();
cMakeDir::MakeDir( WorldName.c_str() );
char SourceFile[128];
sprintf_s(SourceFile, 128, ( WorldName + "/X%i_Z%i.pak").c_str(), a_Layer->m_X, a_Layer->m_Z );
FILE* f = 0;
#ifdef _WIN32
if( fopen_s(&f, SourceFile, "wb" ) == 0 ) // no error
#else
if( (f = fopen(SourceFile, "wb" )) != 0 ) // no error
#endif
{
//---------------
// Header
char PakVersion = 1;
char ChunkVersion = 1;
fwrite( &PakVersion, sizeof(PakVersion), 1, f ); // pak version
fwrite( &ChunkVersion, sizeof(ChunkVersion), 1, f ); // chunk version
// Count number of chunks in layer
short NumChunks = 0;
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i )
{
if( a_Layer->m_Chunks[i].m_Compressed || a_Layer->m_Chunks[i].m_LiveChunk )
NumChunks++;
}
fwrite( &NumChunks, sizeof( NumChunks ), 1, f );
LOG("Num Chunks in layer: %i", NumChunks );
//---------------
// Chunk headers
for( int z = 0; z < LAYER_SIZE; ++z )
{
for( int x = 0; x < LAYER_SIZE; ++x )
{
cChunkData & Data = a_Layer->m_Chunks[x + z*LAYER_SIZE];
CompressChunk( &Data );
if( Data.m_Compressed || Data.m_LiveChunk )
{
int ChunkX = a_Layer->m_X*LAYER_SIZE + x;
int ChunkZ = a_Layer->m_Z*LAYER_SIZE + z;
unsigned int Size = Data.m_CompressedSize; // Needs to be size of compressed data
unsigned int USize = Data.m_UncompressedSize; // Uncompressed size
fwrite( &ChunkX, sizeof( ChunkX ), 1, f );
fwrite( &ChunkZ, sizeof( ChunkZ ), 1, f );
fwrite( &Size, sizeof( Size ), 1, f );
fwrite( &USize, sizeof( USize ), 1, f );
}
}
}
//----------------
// Chunk data
for( int i = 0; i < LAYER_SIZE*LAYER_SIZE; ++i )
{
char* Compressed = a_Layer->m_Chunks[i].m_Compressed;
if( Compressed )
{
fwrite( Compressed, a_Layer->m_Chunks[i].m_CompressedSize, 1, f );
if(a_Layer->m_Chunks[i].m_LiveChunk) // If there's a live chunk we have no need for compressed data
{
delete [] a_Layer->m_Chunks[i].m_Compressed;
a_Layer->m_Chunks[i].m_Compressed = 0;
a_Layer->m_Chunks[i].m_CompressedSize = 0;
}
}
}
fclose(f);
}
else
{
LOGERROR("ERROR: Could not write to file %s", SourceFile );
}
}
cChunkMap::cChunkLayer* cChunkMap::LoadLayer(int a_LayerX, int a_LayerZ )
{
std::string WorldName = m_World->GetName();
char SourceFile[128];
sprintf_s(SourceFile, 128, (WorldName + "/X%i_Z%i.pak").c_str(), a_LayerX, a_LayerZ );
FILE* f = 0;
#ifdef _WIN32
if( fopen_s(&f, SourceFile, "rb" ) == 0 ) // no error
#else
if( (f = fopen(SourceFile, "rb" )) != 0 ) // no error
#endif
{
char PakVersion = 0;
char ChunkVersion = 0;
if( fread( &PakVersion, sizeof(PakVersion), 1, f) != 1 ) { LOGERROR("ERROR 1 READING FROM FILE %s", SourceFile); fclose(f); return false; }
if( PakVersion != 1 ) { LOGERROR("WRONG PAK VERSION!"); fclose(f); return 0; }
if( fread( &ChunkVersion, sizeof(ChunkVersion), 1, f) != 1 ) { LOGERROR("ERROR 2 READING FROM FILE %s", SourceFile); fclose(f); return false; }
if( PakVersion != 1 ) { LOGERROR("WRONG CHUNK VERSION!"); fclose(f); return 0; }
short NumChunks = 0;
if( fread( &NumChunks, sizeof(NumChunks), 1, f) != 1 ) { LOGERROR("ERROR 3 READING FROM FILE %s", SourceFile); fclose(f); return false; }
LOG("Num chunks: %i", NumChunks );
LOG("Source File: %s", SourceFile );
cChunkLayer* Layer = new cChunkLayer( LAYER_SIZE*LAYER_SIZE );
Layer->m_X = a_LayerX;
Layer->m_Z = a_LayerZ;
cChunkData** OrderedData = new cChunkData*[ NumChunks ]; // So we can loop over the chunks in the order they were loaded
// Loop over all chunk headers
for( short i = 0; i < NumChunks; ++i )
{
int ChunkX = 0;
int ChunkZ = 0;
if( fread( &ChunkX, sizeof(ChunkX), 1, f) != 1 ) { LOGERROR("ERROR 4 READING FROM FILE %s", SourceFile); fclose(f); return false; }
if( fread( &ChunkZ, sizeof(ChunkZ), 1, f) != 1 ) { LOGERROR("ERROR 5 READING FROM FILE %s", SourceFile); fclose(f); return false; }
cChunkData* Data = Layer->GetChunk( ChunkX, ChunkZ );
if( Data )
{
if( fread( &Data->m_CompressedSize, sizeof(Data->m_CompressedSize), 1, f) != 1 ) { LOGERROR("ERROR 6 READING FROM FILE %s", SourceFile); fclose(f); return false; }
if( fread( &Data->m_UncompressedSize, sizeof(Data->m_UncompressedSize), 1, f) != 1 ) { LOGERROR("ERROR 7 READING FROM FILE %s", SourceFile); fclose(f); return false; }
}
else
{
LOGERROR("Chunk with wrong coordinates in pak file! %i %i", ChunkX, ChunkZ );
fclose(f);
return 0;
}
OrderedData[i] = Data;
}
// Loop over chunks again, in the order they were loaded, and load their compressed data
for( short i = 0; i < NumChunks; ++i )
{
cChunkData* Data = OrderedData[i];
Data->m_Compressed = new char[ Data->m_CompressedSize ];
//printf("Compressed chunk size: %i\n",Data->m_CompressedSize);
if( fread( Data->m_Compressed, Data->m_CompressedSize, 1, f) != 1 ) { LOGERROR("ERROR 8 READING FROM FILE %s", SourceFile); fclose(f); return false; }
/* // Some testing...
uLongf DestSize = Data->m_UncompressedSize;
char* BlockData = new char[ DestSize ];
int errorcode = uncompress( (Bytef*)BlockData, &DestSize, (Bytef*)Data->m_Compressed, Data->m_CompressedSize );
if( errorcode != Z_OK )
{
LOGERROR("lulwut");
}
*/
}
delete [] OrderedData;
fclose(f);
return Layer;
}
else
{
//LOGWARN("Could not open file %s", SourceFile );
}
return 0;
}
Reference in New Issue View Git Blame Copy Permalink