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cuberite-2a/source/cChunk.cpp

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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#ifndef _WIN32
#include <cstdlib>
#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 "cChestEntity.h"
#include "cFurnaceEntity.h"
#include "cSignEntity.h"
#include "cTorch.h"
#include "cLadder.h"
#include "cPickup.h"
#include "cRedstone.h"
#include "cItem.h"
#include "cNoise.h"
#include "cRoot.h"
#include "cWorldGenerator.h"
#include "cBlockToPickup.h"
#include "MersenneTwister.h"
#include "cPlayer.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>
extern bool g_bWaterPhysics;
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// sSetBlock:
sSetBlock::sSetBlock( int a_X, int a_Y, int a_Z, char a_BlockType, char a_BlockMeta ) // absolute block position
: x( a_X )
, y( a_Y )
, z( a_Z )
, BlockType( a_BlockType )
, BlockMeta( a_BlockMeta )
{
cChunkMap::AbsoluteToRelative(x, y, z, ChunkX, ChunkZ);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cChunk:
cChunk::cChunk(int a_X, int a_Y, int a_Z, cChunkMap * a_ChunkMap, cWorld * a_World)
: m_bCalculateLighting( 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_World( a_World )
, m_ChunkMap(a_ChunkMap)
, m_IsValid(false)
, m_IsDirty(false)
, m_IsSaving(false)
, m_StayCount(0)
{
// LOGINFO("### new cChunk (%i, %i) at %p, thread 0x%x ###", a_X, a_Z, this, GetCurrentThreadId());
}
cChunk::~cChunk()
{
// LOGINFO("### delete cChunk() (%i, %i) from %p, thread 0x%x ###", m_PosX, m_PosZ, this, GetCurrentThreadId() );
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
delete *itr;
}
m_BlockEntities.clear();
// Remove and destroy all entities that are not players:
cEntityList Entities;
for (cEntityList::const_iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
{
if ((*itr)->GetEntityType() != cEntity::E_PLAYER)
{
Entities.push_back(*itr);
}
}
for (cEntityList::iterator itr = Entities.begin(); itr != Entities.end(); ++itr)
{
(*itr)->RemoveFromChunk();
(*itr)->Destroy();
}
m_Entities.clear();
}
void cChunk::SetValid(bool a_SendToClients)
{
m_IsValid = true;
m_World->GetChunkMap()->ChunkValidated();
if (!a_SendToClients)
{
return;
}
if (m_LoadedByClient.empty())
{
return;
}
// Sending the chunk here interferes with the lighting done in the tick thread and results in the "invalid compressed data" on the client
/*
cPacket_PreChunk PreChunk;
PreChunk.m_PosX = m_PosX;
PreChunk.m_PosZ = m_PosZ;
PreChunk.m_bLoad = true;
cPacket_MapChunk MapChunk(this);
Broadcast(&PreChunk);
Broadcast(&MapChunk);
// Let all clients of this chunk know that it has been already sent to the client
for (cClientHandleList::iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr)
{
(*itr)->ChunkJustSent(this);
} // for itr - m_LoadedByClient[]
*/
}
bool cChunk::CanUnload(void)
{
return m_LoadedByClient.empty() && !m_IsDirty && (m_StayCount == 0);
}
void cChunk::MarkSaving(void)
{
m_IsSaving = true;
}
void cChunk::MarkSaved(void)
{
if (!m_IsSaving)
{
return;
}
m_IsDirty = false;
}
void cChunk::MarkLoaded(void)
{
m_IsDirty = false;
SetValid();
}
void cChunk::GetAllData(cChunkDataCallback * a_Callback)
{
a_Callback->BlockData(m_BlockData);
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
{
a_Callback->Entity(*itr);
}
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
a_Callback->BlockEntity(*itr);
}
}
void cChunk::SetAllData(const char * a_BlockData, cEntityList & a_Entities, cBlockEntityList & a_BlockEntities)
{
memcpy(m_BlockData, a_BlockData, sizeof(m_BlockData));
// Clear the internal entities:
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
{
if ((*itr)->GetEntityType() == cEntity::E_PLAYER)
{
// Move players into the new entity list
a_Entities.push_back(*itr);
}
else
{
// Delete other entities (there should not be any, since we're now loading / generating the chunk)
LOGWARNING("cChunk: There is an unexpected entity #%d of type %s in chunk [%d, %d]; it will be deleted",
(*itr)->GetUniqueID(), (*itr)->GetClass(),
m_PosX, m_PosZ
);
// Assert because this is a very curious case. These lines were executed once before, when a player died, re spawned, and walked around a bit. It's uncertain why an entity would be in the chunk in this case.
ASSERT(!"Unexpected entity in chunk!");
(*itr)->Destroy();
}
}
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
delete *itr;
}
// Swap the entity lists:
std::swap(a_Entities, m_Entities);
std::swap(a_BlockEntities, m_BlockEntities);
// Create block entities that the loader didn't load; fill them with defaults
CreateBlockEntities();
CalculateHeightmap();
}
/// Copies m_BlockData into a_Blocks, only the block types
void cChunk::GetBlocks(char * a_Blocks)
{
memcpy(a_Blocks, m_BlockData, cChunk::c_NumBlocks);
}
/// Returns true if there is a block entity at the coords specified
bool cChunk::HasBlockEntityAt(int a_BlockX, int a_BlockY, int a_BlockZ)
{
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
if (
((*itr)->GetPosX() == a_BlockX) &&
((*itr)->GetPosY() == a_BlockY) &&
((*itr)->GetPosZ() == a_BlockZ)
)
{
return true;
}
} // for itr - m_BlockEntities[]
return false;
}
/// Sets or resets the internal flag that prevents chunk from being unloaded
void cChunk::Stay(bool a_Stay)
{
m_StayCount += (a_Stay ? 1 : -1);
ASSERT(m_StayCount >= 0);
}
void cChunk::Tick(float a_Dt, MTRand & a_TickRandom)
{
if (m_bCalculateLighting)
{
CalculateLighting();
}
cCSLock Lock(m_CSBlockLists);
unsigned int PendingSendBlocks = 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_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_PendingSendBlocks.clear();
PendingSendBlocks = m_PendingSendBlocks.size();
Broadcast( MultiBlock );
}
if( PendingSendBlocks > 0 )
{
for( unsigned int i = 0; i < PendingSendBlocks; i++)
{
unsigned int index = 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_PendingSendBlocks.clear();
}
Lock.Unlock();
while ( !m_UnloadQuery.empty() )
{
cPacket_PreChunk UnloadPacket;
UnloadPacket.m_PosX = GetPosX();
UnloadPacket.m_PosZ = GetPosZ();
UnloadPacket.m_bLoad = false; // Unload
(*m_UnloadQuery.begin())->Send( UnloadPacket );
m_UnloadQuery.remove( *m_UnloadQuery.begin() );
}
cCSLock Lock2(m_CSBlockLists);
std::map< unsigned int, int > ToTickBlocks = m_ToTickBlocks;
m_ToTickBlocks.clear();
Lock2.Unlock();
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_CACTUS:
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->GetSimulatorManager()->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;
default:
break;
};
}
// Tick dem blocks
int RandomX = a_TickRandom.randInt();
int RandomY = a_TickRandom.randInt();
int RandomZ = a_TickRandom.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 )
{
/*
// TODO: re-enable
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 (furnaces)
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
if ((*itr)->GetBlockType() == E_BLOCK_FURNACE)
{
((cFurnaceEntity *)(*itr))->Tick( a_Dt );
}
}
}
int cChunk::GetHeight( int a_X, int a_Z )
{
ASSERT((a_X >= 0) && (a_X < 16) && (a_Z >= 0) && (a_Z < 16));
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(void)
{
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:
{
if (!HasBlockEntityAt(x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16))
{
m_BlockEntities.push_back( new cChestEntity( x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16, m_World) );
}
break;
}
case E_BLOCK_FURNACE:
{
if (!HasBlockEntityAt(x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16))
{
m_BlockEntities.push_back( new cFurnaceEntity( x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16, m_World) );
}
break;
}
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
if (!HasBlockEntityAt(x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16))
{
m_BlockEntities.push_back( new cSignEntity( BlockType, x + m_PosX * 16, y + m_PosY * 128, z + m_PosZ * 16, m_World) );
}
break;
}
} // switch (BlockType)
} // for y
} // for z
} // for x
}
void cChunk::CalculateHeightmap()
{
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;
}
} // for y
} // for z
} // for x
}
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
cChunkPtr LeftChunk = m_ChunkMap->GetChunkNoGen( m_PosX - 1, m_PosY, m_PosZ );
cChunkPtr RightChunk = m_ChunkMap->GetChunkNoGen( m_PosX + 1, m_PosY, m_PosZ );
char * LeftSky = NULL, *RightSky = NULL;
if (LeftChunk->IsValid())
{
LeftSky = (a_LightBuffer == m_BlockSkyLight) ? LeftChunk->pGetSkyLight() : LeftChunk->pGetLight();
}
if (RightChunk->IsValid())
{
RightSky = (a_LightBuffer == m_BlockSkyLight) ? RightChunk->pGetSkyLight() : RightChunk->pGetLight();
}
for (int z = 0; z < 16; z++) for(int y = 0; y < 128; y++)
{
if (LeftSky != NULL)
{
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 (RightSky != NULL)
{
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
cChunkPtr FrontChunk = m_ChunkMap->GetChunkNoGen( m_PosX, m_PosY, m_PosZ - 1 );
cChunkPtr BackChunk = m_ChunkMap->GetChunkNoGen( m_PosX, m_PosY, m_PosZ + 1 );
char * FrontSky = NULL, * BackSky = NULL;
if (FrontChunk->IsValid())
{
FrontSky = (a_LightBuffer == m_BlockSkyLight) ? FrontChunk->pGetSkyLight() : FrontChunk->pGetLight();
}
if (BackChunk->IsValid())
{
BackSky = (a_LightBuffer == m_BlockSkyLight) ? BackChunk->pGetSkyLight() : BackChunk->pGetLight();
}
for(int x = 0; x < 16; x++) for(int y = 0; y < 128; y++)
{
if (FrontSky != NULL)
{
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 (BackSky != NULL)
{
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( m_PosX - 1, m_PosY, m_PosZ );
if( bCalcRight ) m_World->ReSpreadLighting( m_PosX + 1, m_PosY, m_PosZ );
if( bCalcFront ) m_World->ReSpreadLighting( m_PosX, m_PosY, m_PosZ - 1 );
if( bCalcBack ) m_World->ReSpreadLighting( m_PosX, m_PosY, m_PosZ + 1 );
}
void cChunk::SendTo(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 ) );
cCSLock Lock(m_CSBlockLists);
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != 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)
{
return; // Clip
}
ASSERT(IsValid()); // Is this chunk loaded / generated?
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;
// It's called SetLight(), but it sets the Meta when passed the BlockMeta workspace
SetLight( m_BlockMeta, index, a_BlockMeta );
if ((OldBlockType == a_BlockType) && (OldBlockMeta == a_BlockMeta))
{
return;
}
MarkDirty();
{
cCSLock Lock(m_CSBlockLists);
m_PendingSendBlocks.push_back( index );
}
// ONLY recalculate lighting if it's necessary!
if(
(g_BlockLightValue[ OldBlockType ] != g_BlockLightValue[ a_BlockType ]) ||
(g_BlockSpreadLightFalloff[ OldBlockType ] != g_BlockSpreadLightFalloff[ a_BlockType ]) ||
(g_BlockTransparent[ OldBlockType ] != g_BlockTransparent[ a_BlockType ] )
)
{
RecalculateLighting();
}
// Update heightmap, if needed:
if (a_Y >= m_HeightMap[a_X + a_Z * 16])
{
if (a_BlockType != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * 16] = a_Y;
}
else
{
for (int y = a_Y - 1; y > 0; --y)
{
if (m_BlockData[MakeIndex(a_X, y, a_Z)] != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * 16] = y;
break;
}
} // for y - column in m_BlockData
}
}
m_ToTickBlocks[ MakeIndex( a_X, a_Y, a_Z ) ]++;
m_ToTickBlocks[ MakeIndex( a_X+1, a_Y, a_Z ) ]++;
m_ToTickBlocks[ MakeIndex( a_X-1, a_Y, a_Z ) ]++;
m_ToTickBlocks[ MakeIndex( a_X, a_Y+1, a_Z ) ]++;
m_ToTickBlocks[ MakeIndex( a_X, a_Y-1, a_Z ) ]++;
m_ToTickBlocks[ MakeIndex( a_X, a_Y, a_Z+1 ) ]++;
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, m_World) );
break;
}
case E_BLOCK_FURNACE:
{
AddBlockEntity( new cFurnaceEntity( a_X + m_PosX * 16, a_Y + m_PosY * 128, a_Z + m_PosZ * 16, m_World) );
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, m_World) );
break;
}
} // switch (a_BlockType)
}
void cChunk::FastSetBlock( int a_X, int a_Y, int a_Z, char a_BlockType, char a_BlockMeta)
{
ASSERT(!((a_X < 0 || a_X >= 16 || a_Y < 0 || a_Y >= 128 || a_Z < 0 || a_Z >= 16)));
ASSERT(IsValid());
const int index = a_Y + (a_Z * 128) + (a_X * 128 * 16);
const char OldBlock = m_BlockType[index];
if (OldBlock == a_BlockType)
{
return;
}
MarkDirty();
m_BlockType[index] = a_BlockType;
{
cCSLock Lock(m_CSBlockLists);
m_PendingSendBlocks.push_back( index );
}
// It's called SetLight(), but it sets the Meta when passed the BlockMeta workspace
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();
}
// Update heightmap, if needed:
if (a_Y >= m_HeightMap[a_X + a_Z * 16])
{
if (a_BlockType != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * 16] = a_Y;
}
else
{
for (int y = a_Y - 1; y > 0; --y)
{
if (m_BlockData[MakeIndex(a_X, y, a_Z)] != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * 16] = y;
break;
}
} // for y - column in m_BlockData
}
}
}
void cChunk::SendBlockTo( int a_X, int a_Y, int a_Z, cClientHandle* a_Client )
{
if( a_Client == 0 )
{
cCSLock Lock(m_CSBlockLists);
m_PendingSendBlocks.push_back( MakeIndex( a_X, a_Y, a_Z ) );
return;
}
for (cClientHandleList::iterator itr = m_LoadedByClient.begin(); itr != 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 )
{
cCSLock Lock(m_CSBlockLists);
m_BlockEntities.push_back( a_BlockEntity );
}
cBlockEntity * cChunk::GetBlockEntity(int a_X, int a_Y, int a_Z)
{
// Assumes that the m_CSBlockList is already locked, we're being called from SetBlock()
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
if (
((*itr)->GetPosX() == a_X) &&
((*itr)->GetPosY() == a_Y) &&
((*itr)->GetPosZ() == a_Z)
)
{
return *itr;
}
} // for itr - m_BlockEntities[]
return NULL;
}
void cChunk::UseBlockEntity(cPlayer * a_Player, int a_X, int a_Y, int a_Z)
{
cBlockEntity * be = GetBlockEntity(a_X, a_Y, a_Z);
if (be != NULL)
{
be->UsedBy(a_Player);
}
}
void cChunk::CollectPickupsByPlayer(cPlayer * a_Player)
{
double PosX = a_Player->GetPosX();
double PosY = a_Player->GetPosY();
double PosZ = a_Player->GetPosZ();
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
{
if ( (*itr)->GetEntityType() != cEntity::E_PICKUP )
{
continue; // Only pickups
}
float DiffX = (float)((*itr)->GetPosX() - PosX );
float DiffY = (float)((*itr)->GetPosY() - PosY );
float DiffZ = (float)((*itr)->GetPosZ() - PosZ );
float SqrDist = DiffX * DiffX + DiffY * DiffY + DiffZ * DiffZ;
if (SqrDist < 1.5f * 1.5f) // 1.5 block
{
MarkDirty();
(reinterpret_cast<cPickup *>(*itr))->CollectedBy( a_Player );
}
}
}
void cChunk::UpdateSign(int a_PosX, int a_PosY, int a_PosZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
{
// Also sends update packets to all clients in the chunk
for (cBlockEntityList::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
{
if (
((*itr)->GetPosX() == a_PosX) &&
((*itr)->GetPosY() == a_PosY) &&
((*itr)->GetPosZ() == a_PosZ) &&
(
((*itr)->GetBlockType() == E_BLOCK_WALLSIGN) ||
((*itr)->GetBlockType() == E_BLOCK_SIGN_POST)
)
)
{
MarkDirty();
(reinterpret_cast<cSignEntity *>(*itr))->SetLines(a_Line1, a_Line2, a_Line3, a_Line4);
(*itr)->SendTo(NULL);
}
} // for itr - m_BlockEntities[]
}
void cChunk::RemoveBlockEntity( cBlockEntity* a_BlockEntity )
{
cCSLock Lock(m_CSBlockLists);
MarkDirty();
m_BlockEntities.remove( a_BlockEntity );
}
bool cChunk::AddClient(cClientHandle* a_Client)
{
for (cClientHandleList::iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr)
{
if (a_Client == *itr)
{
// Already there, nothing needed
return false;
}
}
m_LoadedByClient.push_back( a_Client );
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr )
{
LOGD("cChunk: Entity #%d (%s) at [%i, %i, %i] spawning for player \"%s\"", (*itr)->GetUniqueID(), (*itr)->GetClass(), m_PosX, m_PosY, m_PosZ, a_Client->GetUsername().c_str() );
(*itr)->SpawnOn( a_Client );
}
return true;
}
void cChunk::RemoveClient( cClientHandle* a_Client )
{
m_LoadedByClient.remove( a_Client );
if ( !a_Client->IsDestroyed() )
{
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr )
{
LOG("chunk [%i, %i] destroying entity #%i for player \"%s\"", m_PosX, m_PosZ, (*itr)->GetUniqueID(), a_Client->GetUsername().c_str() );
cPacket_DestroyEntity DestroyEntity( *itr );
a_Client->Send( DestroyEntity );
}
}
}
bool cChunk::HasClient( cClientHandle* a_Client )
{
for (cClientHandleList::const_iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr)
{
if ((*itr) == a_Client)
{
return true;
}
}
return false;
}
bool cChunk::HasAnyClients(void)
{
return !m_LoadedByClient.empty();
}
void cChunk::AddEntity( cEntity * a_Entity)
{
if (a_Entity->GetEntityType() != cEntity::E_PLAYER)
{
MarkDirty();
}
m_Entities.push_back( a_Entity );
}
void cChunk::RemoveEntity(cEntity * a_Entity)
{
size_t SizeBefore = m_Entities.size();
m_Entities.remove(a_Entity);
size_t SizeAfter = m_Entities.size();
if (SizeBefore != SizeAfter)
{
// Mark as dirty if it was a server-generated entity:
if (a_Entity->GetEntityType() != cEntity::E_PLAYER)
{
MarkDirty();
}
}
}
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 ];
}
/*
// _X 2012_02_23: Loading in old format not supported anymore
/// Loads the chunk from the old-format disk file, erases the file afterwards. Returns true if successful
bool cChunk::LoadFromDisk()
{
AString SourceFile;
Printf(SourceFile, "world/X%i_Y%i_Z%i.bin", m_PosX, m_PosY, m_PosZ );
cFile f;
if (!f.Open(SourceFile, cFile::fmRead))
{
return false;
}
if (f.Read(m_BlockData, sizeof(m_BlockData)) != sizeof(m_BlockData))
{
LOGERROR("ERROR READING FROM FILE %s", SourceFile.c_str());
return false;
}
// Now load Block Entities:
ENUM_BLOCK_ID BlockType;
while (f.Read(&BlockType, sizeof(ENUM_BLOCK_ID)) == sizeof(ENUM_BLOCK_ID))
{
switch (BlockType)
{
case E_BLOCK_CHEST:
{
cChestEntity * ChestEntity = new cChestEntity( 0, 0, 0, m_World );
if (!ChestEntity->LoadFromFile(f))
{
LOGERROR("ERROR READING CHEST FROM FILE %s", SourceFile.c_str());
delete ChestEntity;
return false;
}
m_BlockEntities.push_back( ChestEntity );
break;
}
case E_BLOCK_FURNACE:
{
cFurnaceEntity* FurnaceEntity = new cFurnaceEntity( 0, 0, 0, m_World );
if (!FurnaceEntity->LoadFromFile(f))
{
LOGERROR("ERROR READING FURNACE FROM FILE %s", SourceFile.c_str());
delete FurnaceEntity;
return false;
}
m_BlockEntities.push_back( FurnaceEntity );
break;
}
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
cSignEntity * SignEntity = new cSignEntity(BlockType, 0, 0, 0, m_World );
if (!SignEntity->LoadFromFile( f ) )
{
LOGERROR("ERROR READING SIGN FROM FILE %s", SourceFile.c_str());
delete SignEntity;
return false;
}
m_BlockEntities.push_back( SignEntity );
break;
}
default:
{
ASSERT(!"Unhandled block entity in file");
break;
}
}
}
f.Close();
// Delete old format file
if (std::remove(SourceFile.c_str()) != 0)
{
LOGERROR("Could not delete file %s", SourceFile.c_str());
}
else
{
LOGINFO("Successfully deleted old format file \"%s\"", SourceFile.c_str());
}
m_IsDirty = false;
return true;
}
*/
void cChunk::Broadcast( const cPacket * a_Packet, cClientHandle* a_Exclude)
{
for (cClientHandleList::const_iterator itr = m_LoadedByClient.begin(); itr != m_LoadedByClient.end(); ++itr )
{
if (*itr == a_Exclude)
{
continue;
}
(*itr)->Send( a_Packet );
} // for itr - LoadedByClient[]
}
void cChunk::CopyBlockDataFrom(const char * a_NewBlockData)
{
// Copies all blockdata, recalculates heightmap (used by chunk loaders)
memcpy(m_BlockData, a_NewBlockData, sizeof(m_BlockData));
CalculateHeightmap();
}
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;
}
#if !C_CHUNK_USE_INLINE
# include "cChunk.inc"
#endif
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