flewkey/cuberite-2a
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cuberite-2a/source/cChunk.cpp
mtilden@gmail.com c7fa610be3 - Linux compatible fixes including updated makefile 
- Mersenne Twister still says uint32 but it's now signed for compatibility with random uses needing negative values
 - Server seed is sent to clients, but needs to be able to be signed long long later on for authentic reasons
 - Protocol Version is required to match to ensure client compatibility, this should probably have a settings.ini check as well as store the value there

git-svn-id: http://mc-server.googlecode.com/svn/trunk@121 0a769ca7-a7f5-676a-18bf-c427514a06d6
2011-12-26 09:09:47 +00:00

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#ifndef _WIN32
#include <cstring>
#include <cstdlib>
#include <stdio.h>
#include <sys/stat.h> // for mkdir
#include <sys/types.h>
#endif
#include "cChunk.h"
#include "cWorld.h"
#include "cWaterSimulator.h"
#include "cLavaSimulator.h"
#include "cClientHandle.h"
#include "cServer.h"
#include "zlib.h"
#include "Defines.h"
#include <string> // memset
#include "cChestEntity.h"
#include "cFurnaceEntity.h"
#include "cSignEntity.h"
#include "cMCLogger.h"
#include "cTorch.h"
#include "cLadder.h"
#include "cPickup.h"
#include "cRedstone.h"
#include "cItem.h"
#include "cNoise.h"
#include "cRoot.h"
#include "cCriticalSection.h"
#include "cWorldGenerator.h"
#include "cBlockToPickup.h"
#include "MersenneTwister.h"
#include "packets/cPacket_DestroyEntity.h"
#include "packets/cPacket_PreChunk.h"
#include "packets/cPacket_BlockChange.h"
#include "packets/cPacket_MapChunk.h"
#include "packets/cPacket_MultiBlock.h"
#include <json/json.h>
#include <list>
#include <vector>
#include <map>
#ifndef _WIN32
#define sprintf_s(dst, size, format, ...) sprintf(dst, format, __VA_ARGS__ )
#endif
extern bool g_bWaterPhysics;
typedef std::list< cFurnaceEntity* > FurnaceEntityList;
typedef std::list< cClientHandle* > ClientHandleList;
typedef std::list< cBlockEntity* > BlockEntityList;
typedef std::list< cEntity* > EntityList;
struct cChunk::sChunkState
{
std::map< unsigned int, int > m_ToTickBlocks;
FurnaceEntityList m_TickBlockEntities;
std::vector< unsigned int > m_PendingSendBlocks;
ClientHandleList m_LoadedByClient;
ClientHandleList m_UnloadQuery;
BlockEntityList m_BlockEntities;
EntityList m_Entities;
};
cChunk::~cChunk()
{
//LOG("~cChunk() %i %i %i", m_PosX, m_PosY, m_PosZ );
if( !m_pState->m_LoadedByClient.empty() )
{
LOGWARN("WARNING: Deleting cChunk while it contains %i clients!", m_pState->m_LoadedByClient.size() );
}
for( std::list<cBlockEntity*>::iterator itr = m_pState->m_BlockEntities.begin(); itr != m_pState->m_BlockEntities.end(); ++itr)
{
delete *itr;
}
m_pState->m_BlockEntities.clear();
LockEntities();
if( m_pState->m_Entities.size() > 0 )
{
EntityList Entities = m_pState->m_Entities; // Copy list to a temporary list
for( EntityList::iterator itr = Entities.begin(); itr != Entities.end(); ++itr)
{
if( (*itr)->GetEntityType() != cEntity::E_PLAYER )
{
(*itr)->RemoveFromChunk( this );
(*itr)->Destroy();
}
}
m_pState->m_Entities.clear();
}
UnlockEntities();
if( m_EntitiesCriticalSection )
{
delete m_EntitiesCriticalSection;
m_EntitiesCriticalSection = 0;
}
delete m_pState;
}
cChunk::cChunk(int a_X, int a_Y, int a_Z, cWorld* a_World)
: m_pState( new sChunkState )
, m_bCalculateLighting( false )
, m_bCalculateHeightmap( false )
, m_PosX( a_X )
, m_PosY( a_Y )
, m_PosZ( a_Z )
, m_BlockType( m_BlockData ) // Offset the pointers
, m_BlockMeta( m_BlockType + c_NumBlocks )
, m_BlockLight( m_BlockMeta + c_NumBlocks/2 )
, m_BlockSkyLight( m_BlockLight + c_NumBlocks/2 )
, m_BlockTickNum( 0 )
, m_BlockTickX( 0 )
, m_BlockTickY( 0 )
, m_BlockTickZ( 0 )
, m_EntitiesCriticalSection( 0 )
, m_World( a_World )
{
//LOG("cChunk::cChunk(%i, %i, %i)", a_X, a_Y, a_Z);
m_EntitiesCriticalSection = new cCriticalSection();
}
void cChunk::Initialize()
{
if( !LoadFromDisk() )
{
// Clear memory
memset( m_BlockData, 0x00, c_BlockDataSize );
cWorldGenerator Generator;
Generator.GenerateChunk( this );
CalculateHeightmap();
CalculateLighting();
CreateBlockEntities();
// During generation, some blocks might have been set by using (Fast)SetBlock() causing this list to fill.
// This chunk has not been sent to anybody yet, so there is no need for separately sending block changes when you can send an entire chunk
m_pState->m_PendingSendBlocks.clear();
}
else
{
//LOGINFO("Successfully loaded from disk");
CalculateHeightmap();
}
}
void cChunk::Tick(float a_Dt)
{
if( m_bCalculateLighting )
CalculateLighting();
if( m_bCalculateHeightmap )
CalculateHeightmap();
unsigned int PendingSendBlocks = m_pState->m_PendingSendBlocks.size();
if( PendingSendBlocks > 1 )
{
cPacket_MultiBlock MultiBlock;
MultiBlock.m_ChunkX = m_PosX;
MultiBlock.m_ChunkZ = m_PosZ;
MultiBlock.m_NumBlocks = (short)PendingSendBlocks;
MultiBlock.m_BlockCoordinates = new unsigned short[PendingSendBlocks];
MultiBlock.m_BlockTypes = new char[PendingSendBlocks];
MultiBlock.m_BlockMetas = new char[PendingSendBlocks];
//LOG("Sending multiblock packet for %i blocks", PendingSendBlocks );
for( unsigned int i = 0; i < PendingSendBlocks; i++)
{
unsigned int index = m_pState->m_PendingSendBlocks[i];
unsigned int Y = index % 128;
unsigned int Z = (index / 128) % 16;
unsigned int X = (index / (128*16));
MultiBlock.m_BlockCoordinates[i] = (Z&0xf) | (X&0xf)<<4 | (Y&0xff)<<8;
//LOG("X: %i Y: %i Z: %i Combo: 0x%04x", X, Y, Z, MultiBlock.m_BlockCoordinates[i] );
MultiBlock.m_BlockTypes[i] = m_BlockType[index];
MultiBlock.m_BlockMetas[i] = GetLight( m_BlockMeta, index );
}
m_pState->m_PendingSendBlocks.clear();
PendingSendBlocks = m_pState->m_PendingSendBlocks.size();
Broadcast( MultiBlock );
}
if( PendingSendBlocks > 0 )
{
for( unsigned int i = 0; i < PendingSendBlocks; i++)
{
unsigned int index = m_pState->m_PendingSendBlocks[i];
int Y = index % 128;
int Z = (index / 128) % 16;
int X = (index / (128*16));
cPacket_BlockChange BlockChange;
BlockChange.m_PosX = X + m_PosX*16;
BlockChange.m_PosY = (char)(Y + m_PosY*128);
BlockChange.m_PosZ = Z + m_PosZ*16;
BlockChange.m_BlockType = m_BlockType[index];
BlockChange.m_BlockMeta = GetLight( m_BlockMeta, index );
Broadcast( BlockChange );
}
m_pState->m_PendingSendBlocks.clear();
}
while( !m_pState->m_UnloadQuery.empty() )
{
cPacket_PreChunk UnloadPacket;
UnloadPacket.m_PosX = GetPosX();
UnloadPacket.m_PosZ = GetPosZ();
UnloadPacket.m_bLoad = false; // Unload
(*m_pState->m_UnloadQuery.begin())->Send( UnloadPacket );
m_pState->m_UnloadQuery.remove( *m_pState->m_UnloadQuery.begin() );
}
std::map< unsigned int, int > ToTickBlocks = m_pState->m_ToTickBlocks;
//unsigned int NumTickBlocks = ToTickBlocks.size();
//if( NumTickBlocks > 0 ) LOG("To tick: %i", NumTickBlocks );
m_pState->m_ToTickBlocks.clear();
bool isRedstone = false;
for( std::map< unsigned int, int>::iterator itr = ToTickBlocks.begin(); itr != ToTickBlocks.end(); ++itr )
{
if( (*itr).second < 0 ) continue;
unsigned int index = (*itr).first;
int Y = index % 128;
int Z = (index / 128) % 16;
int X = (index / (128*16));
char BlockID = GetBlock( index );
switch( BlockID )
{
case E_BLOCK_REDSTONE_REPEATER_OFF:
case E_BLOCK_REDSTONE_REPEATER_ON:
case E_BLOCK_REDSTONE_WIRE:
{
isRedstone = true;
}
case E_BLOCK_REEDS:
case E_BLOCK_WOODEN_PRESSURE_PLATE:
case E_BLOCK_STONE_PRESSURE_PLATE:
case E_BLOCK_MINECART_TRACKS:
case E_BLOCK_SIGN_POST:
case E_BLOCK_CROPS:
case E_BLOCK_SAPLING:
case E_BLOCK_YELLOW_FLOWER:
case E_BLOCK_RED_ROSE:
case E_BLOCK_RED_MUSHROOM:
case E_BLOCK_BROWN_MUSHROOM: // Stuff that drops when block below is destroyed
{
if( GetBlock( X, Y-1, Z ) == E_BLOCK_AIR )
{
SetBlock( X, Y, Z, E_BLOCK_AIR, 0 );
int wX, wY, wZ;
PositionToWorldPosition(X, Y, Z, wX, wY, wZ);
m_World->GetWaterSimulator()->WakeUp( wX, wY, wZ );
m_World->GetLavaSimulator()->WakeUp( wX, wY, wZ );
if (isRedstone) {
cRedstone Redstone(m_World);
Redstone.ChangeRedstone( (X+m_PosX*16), (Y+m_PosY*16), (Z+m_PosZ*16), false );
}
cPickup* Pickup = new cPickup( (X+m_PosX*16) * 32 + 16, (Y+m_PosY*128) * 32 + 16, (Z+m_PosZ*16) * 32 + 16, cItem( cBlockToPickup::ToPickup( (ENUM_ITEM_ID)BlockID, E_ITEM_EMPTY) , 1 ) );
Pickup->Initialize( m_World );
}
}
break;
case E_BLOCK_REDSTONE_TORCH_OFF:
case E_BLOCK_REDSTONE_TORCH_ON:
isRedstone = true;
case E_BLOCK_TORCH:
{
char Dir = cTorch::MetaDataToDirection( GetLight( m_BlockMeta, X, Y, Z ) );
LOG("MetaData: %i", Dir );
int XX = X + m_PosX*16;
char YY = (char)Y;
int ZZ = Z + m_PosZ*16;
AddDirection( XX, YY, ZZ, Dir, true );
if( m_World->GetBlock( XX, YY, ZZ ) == E_BLOCK_AIR )
{
SetBlock( X, Y, Z, 0, 0 );
if (isRedstone) {
cRedstone Redstone(m_World);
Redstone.ChangeRedstone( (X+m_PosX*16), (Y+m_PosY*16), (Z+m_PosZ*16), false );
}
cPickup* Pickup = new cPickup( (X+m_PosX*16) * 32 + 16, (Y+m_PosY*128) * 32 + 16, (Z+m_PosZ*16) * 32 + 16, cItem( cBlockToPickup::ToPickup( (ENUM_ITEM_ID)BlockID, E_ITEM_EMPTY) , 1 ) );
Pickup->Initialize( m_World );
}
}
break;
case E_BLOCK_LADDER:
{
char Dir = cLadder::MetaDataToDirection( GetLight( m_BlockMeta, X, Y, Z ) );
int XX = X + m_PosX*16;
char YY = (char)Y;
int ZZ = Z + m_PosZ*16;
AddDirection( XX, YY, ZZ, Dir, true );
if( m_World->GetBlock( XX, YY, ZZ ) == E_BLOCK_AIR )
{
SetBlock( X, Y, Z, E_BLOCK_AIR, 0 );
cPickup* Pickup = new cPickup( (X+m_PosX*16) * 32 + 16, (Y+m_PosY*128) * 32 + 16, (Z+m_PosZ*16) * 32 + 16, cItem( (ENUM_ITEM_ID)BlockID, 1 ) );
Pickup->Initialize( m_World );
}
}
break;
case E_BLOCK_STATIONARY_WATER:
case E_BLOCK_WATER:
break;
case E_BLOCK_GRAVEL:
case E_BLOCK_SAND:
{
char BottomBlock = GetBlock( X, Y-1, Z );
if( BottomBlock == E_BLOCK_AIR || IsBlockWater(BottomBlock) || IsBlockLava(BottomBlock) )
{
SetBlock( X, Y, Z, E_BLOCK_AIR, 0 );
SetBlock( X, Y-1, Z, BlockID, 0 );
int wX, wY, wZ;
PositionToWorldPosition(X, Y, Z, wX, wY, wZ);
m_World->GetWaterSimulator()->WakeUp( wX, wY, wZ );
m_World->GetLavaSimulator()->WakeUp( wX, wY, wZ );
m_World->GetWaterSimulator()->WakeUp( wX, wY - 1, wZ );
m_World->GetLavaSimulator()->WakeUp( wX, wY - 1, wZ );
}
}
break;
default:
break;
};
}
MTRand r1;
// Tick dem blocks
int RandomX = r1.randInt();
int RandomY = r1.randInt();
int RandomZ = r1.randInt();
for(int i = 0; i < 50; i++)
{
m_BlockTickX = (m_BlockTickX + RandomX) % 16;
m_BlockTickY = (m_BlockTickY + RandomY) % 128;
m_BlockTickZ = (m_BlockTickZ + RandomZ) % 16;
//LOG("%03i %03i %03i", m_BlockTickX, m_BlockTickY, m_BlockTickZ);
if( m_BlockTickY > m_HeightMap[ m_BlockTickX + m_BlockTickZ*16 ] ) continue; // It's all air up here
//m_BlockTickNum = (m_BlockTickNum + 1 ) % c_NumBlocks;
unsigned int Index = MakeIndex( m_BlockTickX, m_BlockTickY, m_BlockTickZ );
char ID = m_BlockType[Index];
switch( ID )
{
case E_BLOCK_DIRT:
{
char AboveBlock = GetBlock( Index+1 );
if ( (AboveBlock == 0) && GetLight( m_BlockSkyLight, Index ) > 0xf/2 ) // Half lit //changed to not allow grass if any one hit object is on top
{
FastSetBlock( m_BlockTickX, m_BlockTickY, m_BlockTickZ, E_BLOCK_GRASS, GetLight( m_BlockMeta, Index ) );
}
if ( (g_BlockOneHitDig[AboveBlock]) && GetLight( m_BlockSkyLight, Index+1 ) > 0xf/2 ) // Half lit //ch$
{
FastSetBlock( m_BlockTickX, m_BlockTickY, m_BlockTickZ, E_BLOCK_GRASS, GetLight( m_BlockMeta, Index ) );
}
}
break;
case E_BLOCK_GRASS:
{
char AboveBlock = GetBlock( Index+1 );
if (!( (AboveBlock == 0) || (g_BlockOneHitDig[AboveBlock]) || (g_BlockTransparent[AboveBlock]) ) ) //changed to not allow grass if any one hit object is on top
{
FastSetBlock( m_BlockTickX, m_BlockTickY, m_BlockTickZ, E_BLOCK_DIRT, GetLight( m_BlockMeta, Index ) );
}
}
break;
case E_BLOCK_SAPLING: //todo: check meta of sapling. change m_World->GrowTree to look change trunk and leaves based on meta of sapling
{
FastSetBlock( m_BlockTickX, m_BlockTickY, m_BlockTickZ, E_BLOCK_AIR, GetLight( m_BlockMeta, Index ) );
m_World->GrowTree( m_BlockTickX + m_PosX*16, m_BlockTickY, m_BlockTickZ + m_PosZ*16 );
}
break;
case E_BLOCK_LEAVES: //todo, http://www.minecraftwiki.net/wiki/Data_values#Leaves
{
}
break;
default:
break;
}
}
// Tick block entities (furnace)
std::list< cFurnaceEntity* > TickBlockEntites = m_pState->m_TickBlockEntities; // Dangerous stuff, better make a copy.
for( std::list< cFurnaceEntity* >::iterator itr = TickBlockEntites.begin(); itr != TickBlockEntites.end(); ++itr )
{
if( !(*itr)->Tick( a_Dt ) ) // Remove from list
{
m_pState->m_TickBlockEntities.remove( *itr );
}
}
}
char cChunk::GetHeight( int a_X, int a_Z )
{
if( a_X >= 0 && a_X < 16 && a_Z >= 0 && a_Z < 16 )
return m_HeightMap[a_X + a_Z*16];
return 0;
}
void cChunk::CreateBlockEntities()
{
for(int x = 0; x < 16; x++)
{
for(int z = 0; z < 16; z++)
{
for(int y = 0; y < 128; y++)
{
ENUM_BLOCK_ID BlockType = (ENUM_BLOCK_ID)m_BlockData[ MakeIndex( x, y, z ) ];
switch( BlockType )
{
case E_BLOCK_CHEST:
{
m_pState->m_BlockEntities.push_back( new cChestEntity( x + m_PosX*16, y + m_PosY*128, z + m_PosZ*16, this ) );
}
break;
case E_BLOCK_FURNACE:
{
m_pState->m_BlockEntities.push_back( new cFurnaceEntity( x + m_PosX*16, y + m_PosY*128, z + m_PosZ*16, this ) );
}
break;
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
m_pState->m_BlockEntities.push_back( new cSignEntity( BlockType, x + m_PosX*16, y + m_PosY*128, z + m_PosZ*16, this ) );
}
break;
default:
{
}
break;
}
}
}
}
}
char cChunk::GetLight(char* a_Buffer, int a_BlockIdx)
{
if( a_BlockIdx > -1 && a_BlockIdx < c_NumBlocks )
{
const int cindex = (a_BlockIdx/2);
if( (a_BlockIdx & 1) == 0 )
{ // First half byte
return (a_Buffer[cindex] & 0x0f);
}
else
{
return ((a_Buffer[cindex] & 0xf0) >> 4);
}
}
return 0;
}
char cChunk::GetLight(char* a_Buffer, int x, int y, int z)
{
if( x < 16 && x > -1 && y < 128 && y > -1 && z < 16 && z > -1 )
{
const int cindex = (y/2) + (z * 64) + (x * 64 * 16);
if( (y & 1) == 0 )
{ // First half byte
return (a_Buffer[cindex] & 0x0f);
}
else
{
return ((a_Buffer[cindex] & 0xf0) >> 4);
}
}
return 0;
}
void cChunk::SetLight(char* a_Buffer, int a_BlockIdx, char a_Light)
{
if( a_BlockIdx > -1 && a_BlockIdx < c_NumBlocks )
{
const int cindex = (a_BlockIdx/2);
if( (a_BlockIdx & 1) == 0 )
{ // First half byte
a_Buffer[cindex] &= 0xf0; // Set first half to 0
a_Buffer[cindex] |= (a_Light) & 0x0f;
}
else
{
a_Buffer[cindex] &= 0x0f; // Set second half to 0
a_Buffer[cindex] |= (a_Light << 4) & 0xf0;
}
}
}
void cChunk::SetLight(char* a_Buffer, int x, int y, int z, char light)
{
if( x < 16 && x > -1 && y < 128 && y > -1 && z < 16 && z > -1 )
{
int cindex = (y/2) + (z * 64) + (x * 64 * 16);
if( (y & 1) == 0 )
{ // First half byte
a_Buffer[cindex] &= 0xf0; // Set first half to 0
a_Buffer[cindex] |= (light) & 0x0f;
}
else
{
a_Buffer[cindex] &= 0x0f; // Set second half to 0
a_Buffer[cindex] |= (light << 4) & 0xf0;
}
}
}
inline void cChunk::SpreadLightOfBlock(char* a_LightBuffer, int a_X, int a_Y, int a_Z, char a_Falloff)
{
unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
SetLight( a_LightBuffer, a_X-1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X-1, a_Y, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
SetLight( a_LightBuffer, a_X+1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X+1, a_Y, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
SetLight( a_LightBuffer, a_X, a_Y-1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y-1, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
SetLight( a_LightBuffer, a_X, a_Y+1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y+1, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
SetLight( a_LightBuffer, a_X, a_Y, a_Z-1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z-1 ), MAX(0,CurrentLight-a_Falloff) ) );
SetLight( a_LightBuffer, a_X, a_Y, a_Z+1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z+1 ), MAX(0,CurrentLight-a_Falloff) ) );
}
inline void cChunk::SpreadLightOfBlockX(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
{
unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
SetLight( a_LightBuffer, a_X-1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X-1, a_Y, a_Z ), CurrentLight-1) );
SetLight( a_LightBuffer, a_X+1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X+1, a_Y, a_Z ), CurrentLight-1) );
}
inline void cChunk::SpreadLightOfBlockY(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
{
unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
SetLight( a_LightBuffer, a_X, a_Y-1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y-1, a_Z ), CurrentLight-1) );
SetLight( a_LightBuffer, a_X, a_Y+1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y+1, a_Z ), CurrentLight-1) );
}
inline void cChunk::SpreadLightOfBlockZ(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
{
unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
SetLight( a_LightBuffer, a_X, a_Y, a_Z-1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z-1 ), CurrentLight-1) );
SetLight( a_LightBuffer, a_X, a_Y, a_Z+1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z+1 ), CurrentLight-1) );
}
void cChunk::CalculateHeightmap()
{
m_bCalculateHeightmap = false;
for(int x = 0; x < 16; x++)
{
for(int z = 0; z < 16; z++)
{
for(int y = 127; y > -1; y--)
{
int index = MakeIndex( x, y, z );
if(m_BlockData[index] != E_BLOCK_AIR)
{
m_HeightMap[x + z*16] = (char)y;
break;
}
}
}
}
}
void cChunk::CalculateLighting()
{
// Calculate sunlight
memset(m_BlockSkyLight, 0xff, c_NumBlocks/2 ); // Set all to fully lit, so everything above HeightMap is lit
for(int x = 0; x < 16; x++)
{
for(int z = 0; z < 16; z++)
{
char sunlight = 0xf;
for(int y = m_HeightMap[x + z*16]; y > -1; y--)
{
int index = y + (z * 128) + (x * 128 * 16);
if( g_BlockTransparent[ (int)m_BlockData[index] ] == false )
{
sunlight = 0x0;
}
SetLight( m_BlockSkyLight, x, y, z, sunlight );
}
}
}
// Calculate blocklights
for(int x = 0; x < 16; x++)
{
for(int z = 0; z < 16; z++)
{
int MaxHeight = m_HeightMap[x + z*16];
for(int y = 0; y < MaxHeight; y++)
{
char BlockID = GetBlock(x, y, z);
SetLight( m_BlockLight, x, y, z, g_BlockLightValue[(int)BlockID] );
}
}
}
SpreadLight(m_BlockSkyLight);
SpreadLight(m_BlockLight);
// Stop it from calculating again :P
m_bCalculateLighting = false;
}
void cChunk::SpreadLight(char* a_LightBuffer)
{
// Spread the sunlight
for(int x = 0; x < 16; x++) for(int z = 0; z < 16; z++) for(int y = 0; y < 128; y++)
{
int index = y + (z * 128) + (x * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
SpreadLightOfBlock(a_LightBuffer, x, y, z, g_BlockSpreadLightFalloff[ m_BlockData[index] ]);
}
}
for(int x = 15; x > -1; x--) for(int z = 15; z > -1; z--) for(int y = 127; y > -1; y--)
{
int index = y + (z * 128) + (x * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
SpreadLightOfBlock(a_LightBuffer, x, y, z, g_BlockSpreadLightFalloff[ m_BlockData[index] ]);
}
}
bool bCalcLeft, bCalcRight, bCalcFront, bCalcBack;
bCalcLeft = bCalcRight = bCalcFront = bCalcBack = false;
// Spread to neighbour chunks X-axis
cChunk* LeftChunk = m_World->GetChunkUnreliable( m_PosX-1, m_PosY, m_PosZ );
cChunk* RightChunk = m_World->GetChunkUnreliable( m_PosX+1, m_PosY, m_PosZ );
char* LeftSky = 0, *RightSky = 0;
if(LeftChunk) LeftSky = (a_LightBuffer==m_BlockSkyLight)?LeftChunk->pGetSkyLight():LeftChunk->pGetLight();
if(RightChunk) RightSky = (a_LightBuffer==m_BlockSkyLight)?RightChunk->pGetSkyLight():RightChunk->pGetLight();
for(int z = 0; z < 16; z++) for(int y = 0; y < 128; y++)
{
if( LeftChunk )
{
int index = y + (z * 128) + (0 * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetLight( a_LightBuffer, 0, y, z );
char LeftLight = GetLight( LeftSky, 15, y, z );
if( LeftLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetLight( LeftSky, 15, y, z, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcLeft = true;
}
}
}
if( RightChunk )
{
int index = y + (z * 128) + (15 * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetLight( a_LightBuffer, 15, y, z );
char RightLight = GetLight( RightSky, 0, y, z );
if( RightLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetLight( RightSky, 0, y, z, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcRight = true;
}
}
}
}
// Spread to neighbour chunks Z-axis
cChunk* FrontChunk = m_World->GetChunkUnreliable( m_PosX, m_PosY, m_PosZ-1 );
cChunk* BackChunk = m_World->GetChunkUnreliable( m_PosX, m_PosY, m_PosZ+1 );
char* FrontSky = 0, *BackSky = 0;
if(FrontChunk) FrontSky = (a_LightBuffer==m_BlockSkyLight)?FrontChunk->pGetSkyLight():FrontChunk->pGetLight();
if(BackChunk) BackSky = (a_LightBuffer==m_BlockSkyLight)?BackChunk->pGetSkyLight():BackChunk->pGetLight();
for(int x = 0; x < 16; x++) for(int y = 0; y < 128; y++)
{
if( FrontChunk )
{
int index = y + (0 * 128) + (x * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetLight( a_LightBuffer, x, y, 0 );
char FrontLight = GetLight( FrontSky, x, y, 15 );
if( FrontLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetLight( FrontSky, x, y, 15, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcFront = true;
}
}
}
if( BackChunk )
{
int index = y + (15 * 128) + (x * 128 * 16);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetLight( a_LightBuffer, x, y, 15 );
char BackLight = GetLight( BackSky, x, y, 0 );
if( BackLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetLight( BackSky, x, y, 0, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcBack = true;
}
}
}
}
if( bCalcLeft ) m_World->ReSpreadLighting( LeftChunk );
if( bCalcRight ) m_World->ReSpreadLighting( RightChunk );
if( bCalcFront ) m_World->ReSpreadLighting( FrontChunk );
if( bCalcBack ) m_World->ReSpreadLighting( BackChunk );
}
void cChunk::AsyncUnload( cClientHandle* a_Client )
{
m_pState->m_UnloadQuery.remove( a_Client ); // Make sure this client is only in the list once
m_pState->m_UnloadQuery.push_back( a_Client );
}
void cChunk::Send( cClientHandle* a_Client )
{
cPacket_PreChunk PreChunk;
PreChunk.m_PosX = m_PosX;
PreChunk.m_PosZ = m_PosZ;
PreChunk.m_bLoad = true;
a_Client->Send( PreChunk );
a_Client->Send( cPacket_MapChunk( this ) );
for( BlockEntityList::iterator itr = m_pState->m_BlockEntities.begin(); itr != m_pState->m_BlockEntities.end(); ++itr )
{
(*itr)->SendTo( a_Client );
}
}
void cChunk::SetBlock( int a_X, int a_Y, int a_Z, char a_BlockType, char a_BlockMeta )
{
if(a_X < 0 || a_X >= 16 || a_Y < 0 || a_Y >= 128 || a_Z < 0 || a_Z >= 16)
{
//printf(">>>>>>>>>>>>>>>> CLIPPED SETBLOCK %i %i %i\n", a_X, a_Y, a_Z );
return; // Clip
}
int index = a_Y + (a_Z * 128) + (a_X * 128 * 16);
char OldBlockMeta = GetLight( m_BlockMeta, index );
char OldBlockType = m_BlockType[index];
m_BlockType[index] = a_BlockType;
SetLight( m_BlockMeta, index, a_BlockMeta );
if( OldBlockType != a_BlockType || OldBlockMeta != a_BlockMeta )
{
//LOG("Old: %i %i New: %i %i", OldBlockType, OldBlockMeta, a_BlockType, a_BlockMeta );
m_pState->m_PendingSendBlocks.push_back( index );
m_pState->m_ToTickBlocks[ MakeIndex( a_X, a_Y, a_Z ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X+1, a_Y, a_Z ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X-1, a_Y, a_Z ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X, a_Y+1, a_Z ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X, a_Y-1, a_Z ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X, a_Y, a_Z+1 ) ]++;
m_pState->m_ToTickBlocks[ MakeIndex( a_X, a_Y, a_Z-1 ) ]++;
cBlockEntity* BlockEntity = GetBlockEntity( a_X + m_PosX*16, a_Y+m_PosY*128, a_Z+m_PosZ*16 );
if( BlockEntity )
{
BlockEntity->Destroy();
RemoveBlockEntity( BlockEntity );
delete BlockEntity;
}
switch( a_BlockType )
{
case E_BLOCK_CHEST:
AddBlockEntity( new cChestEntity( a_X + m_PosX*16, a_Y + m_PosY*128, a_Z + m_PosZ*16, this ) );
break;
case E_BLOCK_FURNACE:
AddBlockEntity( new cFurnaceEntity( a_X + m_PosX*16, a_Y + m_PosY*128, a_Z + m_PosZ*16, this ) );
break;
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
AddBlockEntity( new cSignEntity( (ENUM_BLOCK_ID)a_BlockType, a_X + m_PosX*16, a_Y + m_PosY*128, a_Z + m_PosZ*16, this ) );
break;
default:
break;
};
}
CalculateHeightmap();
RecalculateLighting();
}
void cChunk::FastSetBlock( int a_X, int a_Y, int a_Z, char a_BlockType, char a_BlockMeta )
{
if(a_X < 0 || a_X >= 16 || a_Y < 0 || a_Y >= 128 || a_Z < 0 || a_Z >= 16)
{
//printf(">>>>>>>>>>>>>>>> CLIPPED SETBLOCK %i %i %i\n", a_X, a_Y, a_Z );
return; // Clip
}
const int index = a_Y + (a_Z * 128) + (a_X * 128 * 16);
const char OldBlock = m_BlockType[index];
m_BlockType[index] = a_BlockType;
m_pState->m_PendingSendBlocks.push_back( index );
SetLight( m_BlockMeta, index, a_BlockMeta );
// ONLY recalculate lighting if it's necessary!
if( g_BlockLightValue[ OldBlock ] != g_BlockLightValue[ a_BlockType ]
|| g_BlockSpreadLightFalloff[ OldBlock ] != g_BlockSpreadLightFalloff[ a_BlockType ]
|| g_BlockTransparent[ OldBlock ] != g_BlockTransparent[ a_BlockType ] )
{
RecalculateLighting();
}
// Recalculate next tick
RecalculateHeightmap();
}
void cChunk::SendBlockTo( int a_X, int a_Y, int a_Z, cClientHandle* a_Client )
{
if( a_Client == 0 )
{
m_pState->m_PendingSendBlocks.push_back( MakeIndex( a_X, a_Y, a_Z ) );
return;
}
for( std::list< cClientHandle* >::iterator itr = m_pState->m_LoadedByClient.begin(); itr != m_pState->m_LoadedByClient.end(); ++itr )
{
if( *itr == a_Client )
{
unsigned int index = MakeIndex( a_X, a_Y, a_Z );
cPacket_BlockChange BlockChange;
BlockChange.m_PosX = a_X + m_PosX*16;
BlockChange.m_PosY = (char)(a_Y + m_PosY*128);
BlockChange.m_PosZ = a_Z + m_PosZ*16;
BlockChange.m_BlockType = m_BlockType[ index ];
BlockChange.m_BlockMeta = GetLight( m_BlockMeta, index );
a_Client->Send( BlockChange );
break;
}
}
}
void cChunk::AddBlockEntity( cBlockEntity* a_BlockEntity )
{
m_pState->m_BlockEntities.push_back( a_BlockEntity );
}
void cChunk::RemoveBlockEntity( cBlockEntity* a_BlockEntity )
{
m_pState->m_BlockEntities.remove( a_BlockEntity );
}
void cChunk::AddClient( cClientHandle* a_Client )
{
m_pState->m_LoadedByClient.remove( a_Client );
m_pState->m_LoadedByClient.push_back( a_Client );
LockEntities();
for( EntityList::iterator itr = m_pState->m_Entities.begin(); itr != m_pState->m_Entities.end(); ++itr )
{
LOG("%i %i %i Spawning on %s", m_PosX, m_PosY, m_PosZ, a_Client->GetUsername() );
(*itr)->SpawnOn( a_Client );
}
UnlockEntities();
}
void cChunk::RemoveClient( cClientHandle* a_Client )
{
m_pState->m_LoadedByClient.remove( a_Client );
if( !a_Client->IsDestroyed() )
{
LockEntities();
for( EntityList::iterator itr = m_pState->m_Entities.begin(); itr != m_pState->m_Entities.end(); ++itr )
{
LOG("%i %i %i Destroying on %s", m_PosX, m_PosY, m_PosZ, a_Client->GetUsername() );
cPacket_DestroyEntity DestroyEntity( *itr );
a_Client->Send( DestroyEntity );
}
UnlockEntities();
}
}
void cChunk::AddEntity( cEntity & a_Entity )
{
LockEntities();
m_pState->m_Entities.push_back( &a_Entity );
UnlockEntities();
}
bool cChunk::RemoveEntity( cEntity & a_Entity, cChunk* a_CalledFrom /* = 0 */ )
{
LockEntities();
unsigned int SizeBefore = m_pState->m_Entities.size();
m_pState->m_Entities.remove( &a_Entity );
if( SizeBefore == m_pState->m_Entities.size() )
{
LOG("WARNING: Entity was not in chunk %i %i %i", m_PosX, m_PosY, m_PosZ );
if( !a_CalledFrom )
{
UnlockEntities();
return m_World->RemoveEntityFromChunk( a_Entity, this );
}
UnlockEntities();
return false;
}
UnlockEntities();
return true;
}
void cChunk::LockEntities()
{
m_EntitiesCriticalSection->Lock();
}
void cChunk::UnlockEntities()
{
m_EntitiesCriticalSection->Unlock();
}
char cChunk::GetBlock( int a_X, int a_Y, int a_Z )
{
if(a_X < 0 || a_X >= 16 || a_Y < 0 || a_Y >= 128 || a_Z < 0 || a_Z >= 16) return 0; // Clip
int index = a_Y + (a_Z * 128) + (a_X * 128 * 16);
return m_BlockType[index];
}
char cChunk::GetBlock( int a_BlockIdx )
{
if( a_BlockIdx < 0 || a_BlockIdx >= c_NumBlocks ) return 0;
return m_BlockType[ a_BlockIdx ];
}
cBlockEntity* cChunk::GetBlockEntity( int a_X, int a_Y, int a_Z )
{
for( std::list<cBlockEntity*>::iterator itr = m_pState->m_BlockEntities.begin(); itr != m_pState->m_BlockEntities.end(); ++itr)
{
if( (*itr)->GetPosX() == a_X &&
(*itr)->GetPosY() == a_Y &&
(*itr)->GetPosZ() == a_Z )
{
return *itr;
}
}
return 0;
}
bool cChunk::LoadFromDisk()
{
char SourceFile[128];
sprintf_s(SourceFile, 128, "world/X%i_Y%i_Z%i.bin", m_PosX, m_PosY, m_PosZ );
FILE* f = 0;
#ifdef _WIN32
if( fopen_s(&f, SourceFile, "rb" ) == 0 ) // no error
#else
if( (f = fopen(SourceFile, "rb" )) != 0 ) // no error
#endif
{
if( fread( m_BlockData, sizeof(char)*c_BlockDataSize, 1, f) != 1 ) { LOGERROR("ERROR READING FROM FILE %s", SourceFile); fclose(f); return false; }
// Now load Block Entities
ENUM_BLOCK_ID BlockType;
while( fread( &BlockType, sizeof(ENUM_BLOCK_ID), 1, f) == 1 )
{
switch( BlockType )
{
case E_BLOCK_CHEST:
{
cChestEntity* ChestEntity = new cChestEntity( 0, 0, 0, this );
if( !ChestEntity->LoadFromFile( f ) )
{
LOGERROR("ERROR READING CHEST FROM FILE %s", SourceFile );
delete ChestEntity;
fclose(f);
return false;
}
m_pState->m_BlockEntities.push_back( ChestEntity );
}
break;
case E_BLOCK_FURNACE:
{
cFurnaceEntity* FurnaceEntity = new cFurnaceEntity( 0, 0, 0, this );
if( !FurnaceEntity->LoadFromFile( f ) )
{
LOGERROR("ERROR READING FURNACE FROM FILE %s", SourceFile );
delete FurnaceEntity;
fclose(f);
return false;
}
m_pState->m_BlockEntities.push_back( FurnaceEntity );
m_pState->m_TickBlockEntities.push_back( FurnaceEntity ); // They need tickin'
}
break;
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
cSignEntity* SignEntity = new cSignEntity(BlockType, 0, 0, 0, this );
if( !SignEntity->LoadFromFile( f ) )
{
LOGERROR("ERROR READING SIGN FROM FILE %s", SourceFile );
delete SignEntity;
fclose(f);
return false;
}
m_pState->m_BlockEntities.push_back( SignEntity );
}
break;
default:
break;
}
}
fclose(f);
// Delete old format file
if( std::remove( SourceFile ) != 0 )
LOGERROR("Could not delete file %s", SourceFile );
else
LOGINFO("Successfully deleted olf format file %s", SourceFile );
return true;
}
else
{
//LOGWARN("COULD NOT OPEN FILE %s\n", SourceFile);
return false;
}
}
bool cChunk::SaveToDisk()
{
return true; //no more saving old format!
char SourceFile[128];
sprintf_s(SourceFile, 128, "world/X%i_Y%i_Z%i.bin", m_PosX, m_PosY, m_PosZ );
#ifdef _WIN32
{
SECURITY_ATTRIBUTES Attrib;
Attrib.nLength = sizeof(SECURITY_ATTRIBUTES);
Attrib.lpSecurityDescriptor = NULL;
Attrib.bInheritHandle = false;
::CreateDirectory("world", &Attrib);
}
#else
{
mkdir("world", S_IRWXU | S_IRWXG | S_IRWXO);
}
#endif
FILE* f = 0;
#ifdef _WIN32
if( fopen_s(&f, SourceFile, "wb" ) == 0 ) // no error
#else
if( (f = fopen(SourceFile, "wb" )) != 0 ) // no error
#endif
{
fwrite( m_BlockData, sizeof(char)*c_BlockDataSize, 1, f );
// Now write Block Entities
for( std::list<cBlockEntity*>::iterator itr = m_pState->m_BlockEntities.begin(); itr != m_pState->m_BlockEntities.end(); ++itr)
{
cBlockEntity* BlockEntity = *itr;
switch( BlockEntity->GetBlockType() )
{
case E_BLOCK_CHEST:
{
cChestEntity* ChestEntity = reinterpret_cast< cChestEntity* >( BlockEntity );
ChestEntity->WriteToFile( f );
}
break;
case E_BLOCK_FURNACE:
{
cFurnaceEntity* FurnaceEntity = reinterpret_cast< cFurnaceEntity* >( BlockEntity );
FurnaceEntity->WriteToFile( f );
}
break;
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
cSignEntity* SignEntity = reinterpret_cast< cSignEntity* >( BlockEntity );
SignEntity->WriteToFile( f );
}
break;
default:
break;
}
}
fclose(f);
return true;
}
else
{
LOGERROR("ERROR WRITING TO FILE %s", SourceFile);
return false;
}
}
void cChunk::Broadcast( const cPacket & a_Packet, cClientHandle* a_Exclude /* = 0 */ ) const
{
for( std::list< cClientHandle* >::const_iterator itr = m_pState->m_LoadedByClient.begin(); itr != m_pState->m_LoadedByClient.end(); ++itr )
{
if( *itr == a_Exclude ) continue;
(*itr)->Send( a_Packet );
}
}
void cChunk::LoadFromJson( const Json::Value & a_Value )
{
// Load chests
Json::Value AllChests = a_Value.get("Chests", Json::nullValue);
if( !AllChests.empty() )
{
for( Json::Value::iterator itr = AllChests.begin(); itr != AllChests.end(); ++itr )
{
Json::Value & Chest = *itr;
cChestEntity* ChestEntity = new cChestEntity(0,0,0, this);
if( !ChestEntity->LoadFromJson( Chest ) )
{
LOGERROR("ERROR READING CHEST FROM JSON!" );
delete ChestEntity;
}
else m_pState->m_BlockEntities.push_back( ChestEntity );
}
}
// Load furnaces
Json::Value AllFurnaces = a_Value.get("Furnaces", Json::nullValue);
if( !AllFurnaces.empty() )
{
for( Json::Value::iterator itr = AllFurnaces.begin(); itr != AllFurnaces.end(); ++itr )
{
Json::Value & Furnace = *itr;
cFurnaceEntity* FurnaceEntity = new cFurnaceEntity(0,0,0, this);
if( !FurnaceEntity->LoadFromJson( Furnace ) )
{
LOGERROR("ERROR READING FURNACE FROM JSON!" );
delete FurnaceEntity;
}
else m_pState->m_BlockEntities.push_back( FurnaceEntity );
}
}
// Load signs
Json::Value AllSigns = a_Value.get("Signs", Json::nullValue);
if( !AllSigns.empty() )
{
for( Json::Value::iterator itr = AllSigns.begin(); itr != AllSigns.end(); ++itr )
{
Json::Value & Sign = *itr;
cSignEntity* SignEntity = new cSignEntity( E_BLOCK_SIGN_POST, 0,0,0, this);
if( !SignEntity->LoadFromJson( Sign ) )
{
LOGERROR("ERROR READING SIGN FROM JSON!" );
delete SignEntity;
}
else m_pState->m_BlockEntities.push_back( SignEntity );
}
}
}
void cChunk::SaveToJson( Json::Value & a_Value )
{
Json::Value AllChests;
Json::Value AllFurnaces;
Json::Value AllSigns;
for( std::list<cBlockEntity*>::iterator itr = m_pState->m_BlockEntities.begin(); itr != m_pState->m_BlockEntities.end(); ++itr)
{
cBlockEntity* BlockEntity = *itr;
switch( BlockEntity->GetBlockType() )
{
case E_BLOCK_CHEST:
{
cChestEntity* ChestEntity = reinterpret_cast< cChestEntity* >( BlockEntity );
Json::Value NewChest;
ChestEntity->SaveToJson( NewChest );
AllChests.append( NewChest );
}
break;
case E_BLOCK_FURNACE:
{
cFurnaceEntity* FurnaceEntity = reinterpret_cast< cFurnaceEntity* >( BlockEntity );
Json::Value NewFurnace;
FurnaceEntity->SaveToJson( NewFurnace );
AllFurnaces.append( NewFurnace );
}
break;
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
cSignEntity* SignEntity = reinterpret_cast< cSignEntity* >( BlockEntity );
Json::Value NewSign;
SignEntity->SaveToJson( NewSign );
AllSigns.append( NewSign );
}
break;
default:
break;
}
}
if( !AllChests.empty() )
a_Value["Chests"] = AllChests;
if( !AllFurnaces.empty() )
a_Value["Furnaces"] = AllFurnaces;
if( !AllSigns.empty() )
a_Value["Signs"] = AllSigns;
}
EntityList & cChunk::GetEntities()
{
return m_pState->m_Entities;
}
const ClientHandleList & cChunk::GetClients()
{
return m_pState->m_LoadedByClient;
}
void cChunk::AddTickBlockEntity( cFurnaceEntity* a_Entity )
{
m_pState->m_TickBlockEntities.remove( a_Entity );
m_pState->m_TickBlockEntities.push_back( a_Entity );
}
void cChunk::RemoveTickBlockEntity( cFurnaceEntity* a_Entity )
{
m_pState->m_TickBlockEntities.remove( a_Entity );
}
void cChunk::PositionToWorldPosition(int a_ChunkX, int a_ChunkY, int a_ChunkZ, int & a_X, int & a_Y, int & a_Z)
{
a_Y = a_ChunkY;
a_X = m_PosX * 16 + a_ChunkX;
a_Z = m_PosZ * 16 + a_ChunkZ;
}
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