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cuberite-2a/source/cChunk.cpp
faketruth 62ba8f5a20 Using more of the index functions in cChunk, so it should be easy enough to flip the axis ordering now
Added some more functions that use Vector3i for block coordinates in cChunk

git-svn-id: http://mc-server.googlecode.com/svn/trunk@389 0a769ca7-a7f5-676a-18bf-c427514a06d6
2012-03-10 00:25:05 +00:00

1417 lines
36 KiB
C++

#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::eEntityType_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::MarkLoadFailed(void)
{
if (m_IsValid)
{
return;
}
m_HasLoadFailed = true;
}
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::eEntityType_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();
m_HasLoadFailed = false;
}
/// Copies m_BlockData into a_Blocks, only the block types
void cChunk::GetBlocks(char * a_Blocks)
{
memcpy(a_Blocks, m_BlockData, cChunk::c_NumBlocks);
}
/// Copies m_BlockData into a_Blocks, only the block types
void cChunk::GetBlockData(char * a_BlockData)
{
memcpy(a_BlockData, m_BlockData, cChunk::c_BlockDataSize);
}
/// 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;
#if (MINECRAFT_1_2_2 == 1)
MultiBlock.m_Data = new cPacket_MultiBlock::sBlockChange[ PendingSendBlocks ];
MultiBlock.m_DataSize = PendingSendBlocks * sizeof( cPacket_MultiBlock::sBlockChange );
#else
MultiBlock.m_BlockCoordinates = new unsigned short[PendingSendBlocks];
MultiBlock.m_BlockTypes = new char[PendingSendBlocks];
MultiBlock.m_BlockMetas = new char[PendingSendBlocks];
#endif
//LOG("Sending multiblock packet for %i blocks", PendingSendBlocks );
for( unsigned int i = 0; i < PendingSendBlocks; i++)
{
unsigned int index = m_PendingSendBlocks[i];
Vector3i BlockPos = IndexToCoordinate( index );
#if (MINECRAFT_1_2_2 == 1)
unsigned int Coords = BlockPos.y | BlockPos.z << 8 | BlockPos.x << 12;
unsigned int Blocks = GetNibble( m_BlockMeta, index ) | (m_BlockType[index]<<4);
MultiBlock.m_Data[i].Data = Coords << 16 | Blocks;
#else
MultiBlock.m_BlockCoordinates[i] = (BlockPos.z&0xf) | (BlockPos.x&0xf)<<4 | (BlockPos.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] = GetNibble( m_BlockMeta, index );
#endif
}
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];
Vector3i WorldPos = PositionToWorldPosition( IndexToCoordinate( index ) );
cPacket_BlockChange BlockChange;
BlockChange.m_PosX = WorldPos.x;
BlockChange.m_PosY = (unsigned char)WorldPos.y;
BlockChange.m_PosZ = WorldPos.z;
BlockChange.m_BlockType = m_BlockType[index];
BlockChange.m_BlockMeta = GetNibble( 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);
unsigned int NumTickBlocks = m_ToTickBlocks.size();
Lock2.Unlock();
if( NumTickBlocks > 0 )
{
Lock2.Lock();
std::deque< unsigned int > ToTickBlocks = m_ToTickBlocks;
m_ToTickBlocks.clear();
Lock2.Unlock();
bool isRedstone = false;
for( std::deque< unsigned int >::iterator itr = ToTickBlocks.begin(); itr != ToTickBlocks.end(); ++itr )
{
unsigned int index = (*itr);
Vector3i BlockPos = IndexToCoordinate( index );
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( BlockPos.x, BlockPos.y-1, BlockPos.z ) == E_BLOCK_AIR )
{
SetBlock( BlockPos, E_BLOCK_AIR, 0 );
Vector3i WorldPos = PositionToWorldPosition( BlockPos );
m_World->GetSimulatorManager()->WakeUp(WorldPos.x, WorldPos.y, WorldPos.z);
cPickup* Pickup = new cPickup( WorldPos.x * 32 + 16, WorldPos.y * 32 + 16, WorldPos.z * 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( GetNibble( m_BlockMeta, BlockPos ) );
Vector3i WorldPos = PositionToWorldPosition( BlockPos );
Vector3i AttachedTo = WorldPos;
AddDirection( AttachedTo.x, AttachedTo.y, AttachedTo.z, Dir, true );
if( m_World->GetBlock( AttachedTo ) == E_BLOCK_AIR )
{
SetBlock( BlockPos, E_BLOCK_AIR, 0 );
m_World->GetSimulatorManager()->WakeUp(WorldPos.x, WorldPos.y, WorldPos.z);
cPickup* Pickup = new cPickup( WorldPos.x * 32 + 16, WorldPos.y * 32 + 16, WorldPos.z * 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( GetNibble( m_BlockMeta, BlockPos ) );
Vector3i WorldPos = PositionToWorldPosition( BlockPos );
Vector3i AttachedTo = WorldPos;
AddDirection( AttachedTo.x, AttachedTo.y, AttachedTo.z, Dir, true );
if( m_World->GetBlock( AttachedTo ) == E_BLOCK_AIR )
{
SetBlock( BlockPos, E_BLOCK_AIR, 0 );
cPickup* Pickup = new cPickup( WorldPos.x * 32 + 16, WorldPos.y * 32 + 16, WorldPos.z * 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) % c_ChunkWidth;
m_BlockTickY = (m_BlockTickY + RandomY) % c_ChunkHeight;
m_BlockTickZ = (m_BlockTickZ + RandomZ) % c_ChunkWidth;
if( m_BlockTickY > m_HeightMap[ m_BlockTickX + m_BlockTickZ*c_ChunkWidth ] ) continue; // It's all air up here
unsigned int Index = MakeIndexNoCheck( 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) && GetNibble( 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, GetNibble( m_BlockMeta, Index ) );
}
if ( (g_BlockOneHitDig[AboveBlock]) && GetNibble( m_BlockSkyLight, Index+1 ) > 0xf/2 ) // Half lit //ch$
{
FastSetBlock( m_BlockTickX, m_BlockTickY, m_BlockTickZ, E_BLOCK_GRASS, GetNibble( 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, GetNibble( 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, GetNibble( m_BlockMeta, Index ) );
m_World->GrowTree( m_BlockTickX + m_PosX*c_ChunkWidth, m_BlockTickY, m_BlockTickZ + m_PosZ*c_ChunkWidth );
}
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 < c_ChunkWidth) && (a_Z >= 0) && (a_Z < c_ChunkWidth));
if ((a_X >= 0) && (a_X < c_ChunkWidth) && (a_Z >= 0) && (a_Z < c_ChunkWidth))
{
return m_HeightMap[a_X + a_Z * c_ChunkWidth];
}
return 0;
}
void cChunk::CreateBlockEntities(void)
{
for (int x = 0; x < c_ChunkWidth; x++)
{
for (int z = 0; z < c_ChunkWidth; z++)
{
for (int y = 0; y < c_ChunkHeight; 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 * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth))
{
m_BlockEntities.push_back( new cChestEntity( x + m_PosX * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth, m_World) );
}
break;
}
case E_BLOCK_FURNACE:
{
if (!HasBlockEntityAt(x + m_PosX * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth))
{
m_BlockEntities.push_back( new cFurnaceEntity( x + m_PosX * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth, m_World) );
}
break;
}
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
if (!HasBlockEntityAt(x + m_PosX * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth))
{
m_BlockEntities.push_back( new cSignEntity( BlockType, x + m_PosX * c_ChunkWidth, y + m_PosY * c_ChunkHeight, z + m_PosZ * c_ChunkWidth, m_World) );
}
break;
}
} // switch (BlockType)
} // for y
} // for z
} // for x
}
void cChunk::CalculateHeightmap()
{
for (int x = 0; x < c_ChunkWidth; x++)
{
for (int z = 0; z < c_ChunkWidth; z++)
{
for (int y = c_ChunkHeight-1; y > -1; y--)
{
int index = MakeIndex( x, y, z );
if (m_BlockData[index] != E_BLOCK_AIR)
{
m_HeightMap[x + z * c_ChunkWidth] = (unsigned 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 < c_ChunkWidth; x++)
{
for (int z = 0; z < c_ChunkWidth; z++)
{
char sunlight = 0xf;
for (int y = m_HeightMap[x + z*c_ChunkWidth]; y > -1; y--)
{
int index = MakeIndexNoCheck(x, y, z);
if( g_BlockTransparent[ (int)m_BlockData[index] ] == false )
{
sunlight = 0x0;
}
SetNibble( m_BlockSkyLight, index, sunlight );
}
}
}
// Calculate blocklights
for (int x = 0; x < c_ChunkWidth; x++)
{
for (int z = 0; z < c_ChunkWidth; z++)
{
int MaxHeight = m_HeightMap[x + z*c_ChunkWidth];
for (int y = 0; y < MaxHeight; y++)
{
char BlockID = GetBlock(x, y, z);
SetNibble( m_BlockLight, x, y, z, g_BlockLightValue[(int)BlockID] );
}
}
}
SpreadLight(m_BlockSkyLight);
SpreadLight(m_BlockLight);
MarkDirty();
// Stop it from calculating again :P
m_bCalculateLighting = false;
}
void cChunk::SpreadLight(char* a_LightBuffer)
{
// Spread the sunlight
for(int x = 0; x < c_ChunkWidth; x++) for(int z = 0; z < c_ChunkWidth; z++) for(int y = 0; y < c_ChunkHeight; y++)
{
int index = MakeIndexNoCheck(x, y, z);
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
SpreadLightOfBlock(a_LightBuffer, x, y, z, g_BlockSpreadLightFalloff[ m_BlockData[index] ]);
}
}
for(int x = c_ChunkWidth-1; x > -1; x--) for(int z = c_ChunkWidth-1; z > -1; z--) for(int y = c_ChunkHeight-1; y > -1; y--)
{
int index = MakeIndexNoCheck(x, y, z);
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 < c_ChunkWidth; z++) for(int y = 0; y < c_ChunkHeight; y++)
{
if (LeftSky != NULL)
{
int index = MakeIndexNoCheck( 0, y, z );
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetNibble( a_LightBuffer, 0, y, z );
char LeftLight = GetNibble( LeftSky, c_ChunkWidth-1, y, z );
if( LeftLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetNibble( LeftSky, c_ChunkWidth - 1, y, z, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcLeft = true;
}
}
}
if (RightSky != NULL)
{
int index = MakeIndexNoCheck( c_ChunkWidth-1, y, z );
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetNibble( a_LightBuffer, c_ChunkWidth-1, y, z );
char RightLight = GetNibble( RightSky, 0, y, z );
if( RightLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetNibble( 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 < c_ChunkWidth; x++) for(int y = 0; y < c_ChunkHeight; y++)
{
if (FrontSky != NULL)
{
int index = MakeIndexNoCheck( x, y, 0 );
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetNibble( a_LightBuffer, x, y, 0 );
char FrontLight = GetNibble( FrontSky, x, y, c_ChunkWidth-1 );
if( FrontLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetNibble( FrontSky, x, y, c_ChunkWidth-1, MAX(0, CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ]) );
bCalcFront = true;
}
}
}
if (BackSky != NULL)
{
int index = MakeIndexNoCheck( x, y, c_ChunkWidth-1 );
if( g_BlockSpreadLightFalloff[ m_BlockData[index] ] > 0 )
{
char CurrentLight = GetNibble( a_LightBuffer, x, y, c_ChunkWidth-1 );
char BackLight = GetNibble( BackSky, x, y, 0 );
if ( BackLight < CurrentLight-g_BlockSpreadLightFalloff[ m_BlockData[index] ] )
{
SetNibble( 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 );
// No need to set those neighbors dirty, they will recalc their light anyway so they'll get marked dirty there
}
void cChunk::SetBlock( int a_X, int a_Y, int a_Z, char a_BlockType, char a_BlockMeta )
{
if (a_X < 0 || a_X >= c_ChunkWidth || a_Y < 0 || a_Y >= c_ChunkHeight || a_Z < 0 || a_Z >= c_ChunkWidth)
{
return; // Clip
}
ASSERT(IsValid()); // Is this chunk loaded / generated?
int index = MakeIndexNoCheck( a_X, a_Y, a_Z );
char OldBlockMeta = GetNibble( m_BlockMeta, index );
char OldBlockType = m_BlockType[index];
m_BlockType[index] = a_BlockType;
SetNibble( 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 * c_ChunkWidth])
{
if (a_BlockType != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * c_ChunkWidth] = (unsigned char)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 * c_ChunkWidth] = (unsigned char)y;
break;
}
} // for y - column in m_BlockData
}
}
m_ToTickBlocks.push_back( MakeIndex( a_X, a_Y, a_Z ) );
m_ToTickBlocks.push_back( MakeIndex( a_X+1, a_Y, a_Z ) );
m_ToTickBlocks.push_back( MakeIndex( a_X-1, a_Y, a_Z ) );
m_ToTickBlocks.push_back( MakeIndex( a_X, a_Y+1, a_Z ) );
m_ToTickBlocks.push_back( MakeIndex( a_X, a_Y-1, a_Z ) );
m_ToTickBlocks.push_back( MakeIndex( a_X, a_Y, a_Z+1 ) );
m_ToTickBlocks.push_back( MakeIndex( a_X, a_Y, a_Z-1 ) );
Vector3i WorldPos = PositionToWorldPosition( a_X, a_Y, a_Z );
cBlockEntity* BlockEntity = GetBlockEntity( WorldPos );
if( BlockEntity )
{
BlockEntity->Destroy();
RemoveBlockEntity( BlockEntity );
delete BlockEntity;
}
switch( a_BlockType )
{
case E_BLOCK_CHEST:
{
AddBlockEntity( new cChestEntity( WorldPos.x, WorldPos.y, WorldPos.z, m_World) );
break;
}
case E_BLOCK_FURNACE:
{
AddBlockEntity( new cFurnaceEntity( WorldPos.x, WorldPos.y, WorldPos.z, m_World) );
break;
}
case E_BLOCK_SIGN_POST:
case E_BLOCK_WALLSIGN:
{
AddBlockEntity( new cSignEntity( (ENUM_BLOCK_ID)a_BlockType, WorldPos.x, WorldPos.y, WorldPos.z, 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 >= c_ChunkWidth || a_Y < 0 || a_Y >= c_ChunkHeight || a_Z < 0 || a_Z >= c_ChunkWidth)));
ASSERT(IsValid());
const int index = MakeIndexNoCheck( a_X, a_Y, a_Z );
const char OldBlock = m_BlockType[index];
const char OldBlockMeta = GetNibble( m_BlockMeta, index );
if (OldBlock == a_BlockType && OldBlockMeta == a_BlockMeta)
{
return;
}
MarkDirty();
m_BlockType[index] = a_BlockType;
{
cCSLock Lock(m_CSBlockLists);
m_PendingSendBlocks.push_back( index );
}
SetNibble( 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 * c_ChunkWidth])
{
if (a_BlockType != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * c_ChunkWidth] = (unsigned char)a_Y;
}
else
{
for (int y = a_Y - 1; y > 0; --y)
{
if (m_BlockData[MakeIndexNoCheck(a_X, y, a_Z)] != E_BLOCK_AIR)
{
m_HeightMap[a_X + a_Z * c_ChunkWidth] = (unsigned char)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);
unsigned int index = MakeIndex( a_X, a_Y, a_Z );
if( index != INDEX_OUT_OF_RANGE )
{
m_PendingSendBlocks.push_back( index );
}
else
{
LOGWARN("cChunk::SendBlockTo Index out of range!");
}
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 );
Vector3i WorldPos = PositionToWorldPosition( a_X, a_Y, a_Z );
cPacket_BlockChange BlockChange;
BlockChange.m_PosX = WorldPos.x;
BlockChange.m_PosY = (unsigned char)WorldPos.y;
BlockChange.m_PosZ = WorldPos.z;
if( index != INDEX_OUT_OF_RANGE )
{
BlockChange.m_BlockType = m_BlockType[ index ];
BlockChange.m_BlockMeta = GetNibble( m_BlockMeta, index );
} // else it's both 0
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::eEntityType_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::eEntityType_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::eEntityType_Player)
{
MarkDirty();
}
}
}
char cChunk::GetBlock( int a_X, int a_Y, int a_Z )
{
if ((a_X < 0) || (a_X >= c_ChunkWidth) || (a_Y < 0) || (a_Y >= c_ChunkHeight) || (a_Z < 0) || (a_Z >= c_ChunkWidth)) return 0; // Clip
return m_BlockType[ MakeIndexNoCheck( a_X, a_Y, a_Z ) ];
}
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 * c_ChunkWidth + a_ChunkX;
a_Z = m_PosZ * c_ChunkWidth + a_ChunkZ;
}
Vector3i cChunk::PositionToWorldPosition( int a_ChunkX, int a_ChunkY, int a_ChunkZ )
{
return Vector3i( m_PosX * c_ChunkWidth + a_ChunkX, m_PosY * c_ChunkHeight + a_ChunkY, m_PosZ * c_ChunkWidth + a_ChunkZ );
}
#if !C_CHUNK_USE_INLINE
# include "cChunk.inl.h"
#endif