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Diffstat (limited to 'src/WorldStorage/WSSAnvil.cpp')
| -rw-r--r-- | src/WorldStorage/WSSAnvil.cpp | 1555 |
1 files changed, 1555 insertions, 0 deletions
diff --git a/src/WorldStorage/WSSAnvil.cpp b/src/WorldStorage/WSSAnvil.cpp new file mode 100644 index 000000000..79be4dfa2 --- /dev/null +++ b/src/WorldStorage/WSSAnvil.cpp @@ -0,0 +1,1555 @@ + +// WSSAnvil.cpp + +// Implements the cWSSAnvil class representing the Anvil world storage scheme + +#include "Globals.h" +#include "WSSAnvil.h" +#include "NBTChunkSerializer.h" +#include "../World.h" +#include "zlib/zlib.h" +#include "../BlockID.h" +#include "../BlockEntities/ChestEntity.h" +#include "../BlockEntities/DispenserEntity.h" +#include "../BlockEntities/DropperEntity.h" +#include "../BlockEntities/FurnaceEntity.h" +#include "../BlockEntities/HopperEntity.h" +#include "../BlockEntities/JukeboxEntity.h" +#include "../BlockEntities/NoteEntity.h" +#include "../BlockEntities/SignEntity.h" +#include "../Item.h" +#include "../ItemGrid.h" +#include "../StringCompression.h" +#include "FastNBT.h" +#include "../Mobs/Monster.h" +#include "../Entities/Boat.h" +#include "../Entities/FallingBlock.h" +#include "../Entities/Minecart.h" +#include "../Entities/Pickup.h" +#include "../Entities/ProjectileEntity.h" + + + + + +/** If defined, the BlockSkyLight values will be copied over to BlockLight upon chunk saving, +thus making skylight visible in Minutor's Lighting mode +*/ +// #define DEBUG_SKYLIGHT + +/** Maximum number of MCA files that are cached in memory. +Since only the header is actually in the memory, this number can be high, but still, each file means an OS FS handle. +*/ +#define MAX_MCA_FILES 32 + +/// The maximum size of an inflated chunk; raw chunk data is 192 KiB, allow 64 KiB more of entities +#define CHUNK_INFLATE_MAX 256 KiB + + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cWSSAnvil: + +cWSSAnvil::cWSSAnvil(cWorld * a_World) : + super(a_World) +{ + // Create a level.dat file for mapping tools, if it doesn't already exist: + AString fnam; + Printf(fnam, "%s/level.dat", a_World->GetName().c_str()); + if (!cFile::Exists(fnam)) + { + cFastNBTWriter Writer; + Writer.BeginCompound(""); + Writer.AddInt("SpawnX", (int)(a_World->GetSpawnX())); + Writer.AddInt("SpawnY", (int)(a_World->GetSpawnY())); + Writer.AddInt("SpawnZ", (int)(a_World->GetSpawnZ())); + Writer.EndCompound(); + Writer.Finish(); + + #ifdef _DEBUG + cParsedNBT TestParse(Writer.GetResult().data(), Writer.GetResult().size()); + ASSERT(TestParse.IsValid()); + #endif // _DEBUG + + gzFile gz = gzopen((FILE_IO_PREFIX + fnam).c_str(), "wb"); + if (gz != NULL) + { + gzwrite(gz, Writer.GetResult().data(), Writer.GetResult().size()); + } + gzclose(gz); + } +} + + + + + +cWSSAnvil::~cWSSAnvil() +{ + cCSLock Lock(m_CS); + for (cMCAFiles::iterator itr = m_Files.begin(); itr != m_Files.end(); ++itr) + { + delete *itr; + } // for itr - m_Files[] +} + + + + + +bool cWSSAnvil::LoadChunk(const cChunkCoords & a_Chunk) +{ + AString ChunkData; + if (!GetChunkData(a_Chunk, ChunkData)) + { + // The reason for failure is already printed in GetChunkData() + return false; + } + + return LoadChunkFromData(a_Chunk, ChunkData); +} + + + + + +bool cWSSAnvil::SaveChunk(const cChunkCoords & a_Chunk) +{ + AString ChunkData; + if (!SaveChunkToData(a_Chunk, ChunkData)) + { + LOGWARNING("Cannot serialize chunk [%d, %d] into data", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ); + return false; + } + if (!SetChunkData(a_Chunk, ChunkData)) + { + LOGWARNING("Cannot store chunk [%d, %d] data", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ); + return false; + } + + // Everything successful + return true; +} + + + + + +bool cWSSAnvil::GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data) +{ + cCSLock Lock(m_CS); + cMCAFile * File = LoadMCAFile(a_Chunk); + if (File == NULL) + { + return false; + } + return File->GetChunkData(a_Chunk, a_Data); +} + + + + + +bool cWSSAnvil::SetChunkData(const cChunkCoords & a_Chunk, const AString & a_Data) +{ + cCSLock Lock(m_CS); + cMCAFile * File = LoadMCAFile(a_Chunk); + if (File == NULL) + { + return false; + } + return File->SetChunkData(a_Chunk, a_Data); +} + + + + + +cWSSAnvil::cMCAFile * cWSSAnvil::LoadMCAFile(const cChunkCoords & a_Chunk) +{ + // ASSUME m_CS is locked + ASSERT(m_CS.IsLocked()); + + const int RegionX = FAST_FLOOR_DIV(a_Chunk.m_ChunkX, 32); + const int RegionZ = FAST_FLOOR_DIV(a_Chunk.m_ChunkZ, 32); + ASSERT(a_Chunk.m_ChunkX - RegionX * 32 >= 0); + ASSERT(a_Chunk.m_ChunkZ - RegionZ * 32 >= 0); + ASSERT(a_Chunk.m_ChunkX - RegionX * 32 < 32); + ASSERT(a_Chunk.m_ChunkZ - RegionZ * 32 < 32); + + // Is it already cached? + for (cMCAFiles::iterator itr = m_Files.begin(); itr != m_Files.end(); ++itr) + { + if (((*itr) != NULL) && ((*itr)->GetRegionX() == RegionX) && ((*itr)->GetRegionZ() == RegionZ)) + { + // Move the file to front and return it: + cMCAFile * f = *itr; + if (itr != m_Files.begin()) + { + m_Files.erase(itr); + m_Files.push_front(f); + } + return f; + } + } + + // Load it anew: + AString FileName; + Printf(FileName, "%s/region", m_World->GetName().c_str()); + cFile::CreateFolder(FILE_IO_PREFIX + FileName); + AppendPrintf(FileName, "/r.%d.%d.mca", RegionX, RegionZ); + cMCAFile * f = new cMCAFile(FileName, RegionX, RegionZ); + if (f == NULL) + { + return NULL; + } + m_Files.push_front(f); + + // If there are too many MCA files cached, delete the last one used: + if (m_Files.size() > MAX_MCA_FILES) + { + delete m_Files.back(); + m_Files.pop_back(); + } + return f; +} + + + + + +bool cWSSAnvil::LoadChunkFromData(const cChunkCoords & a_Chunk, const AString & a_Data) +{ + // Decompress the data: + char Uncompressed[CHUNK_INFLATE_MAX]; + z_stream strm; + strm.zalloc = (alloc_func)NULL; + strm.zfree = (free_func)NULL; + strm.opaque = NULL; + inflateInit(&strm); + strm.next_out = (Bytef *)Uncompressed; + strm.avail_out = sizeof(Uncompressed); + strm.next_in = (Bytef *)a_Data.data(); + strm.avail_in = a_Data.size(); + int res = inflate(&strm, Z_FINISH); + inflateEnd(&strm); + if (res != Z_STREAM_END) + { + return false; + } + + // Parse the NBT data: + cParsedNBT NBT(Uncompressed, strm.total_out); + if (!NBT.IsValid()) + { + // NBT Parsing failed + return false; + } + + // Load the data from NBT: + return LoadChunkFromNBT(a_Chunk, NBT); +} + + + + + +bool cWSSAnvil::SaveChunkToData(const cChunkCoords & a_Chunk, AString & a_Data) +{ + cFastNBTWriter Writer; + if (!SaveChunkToNBT(a_Chunk, Writer)) + { + LOGWARNING("Cannot save chunk [%d, %d] to NBT", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ); + return false; + } + Writer.Finish(); + + CompressString(Writer.GetResult().data(), Writer.GetResult().size(), a_Data); + return true; +} + + + + + +bool cWSSAnvil::LoadChunkFromNBT(const cChunkCoords & a_Chunk, const cParsedNBT & a_NBT) +{ + // The data arrays, in MCA-native y/z/x ordering (will be reordered for the final chunk data) + cChunkDef::BlockTypes BlockTypes; + cChunkDef::BlockNibbles MetaData; + cChunkDef::BlockNibbles BlockLight; + cChunkDef::BlockNibbles SkyLight; + + memset(BlockTypes, E_BLOCK_AIR, sizeof(BlockTypes)); + memset(MetaData, 0, sizeof(MetaData)); + memset(SkyLight, 0xff, sizeof(SkyLight)); // By default, data not present in the NBT means air, which means full skylight + memset(BlockLight, 0x00, sizeof(BlockLight)); + + // Load the blockdata, blocklight and skylight: + int Level = a_NBT.FindChildByName(0, "Level"); + if (Level < 0) + { + return false; + } + int Sections = a_NBT.FindChildByName(Level, "Sections"); + if ((Sections < 0) || (a_NBT.GetType(Sections) != TAG_List) || (a_NBT.GetChildrenType(Sections) != TAG_Compound)) + { + return false; + } + for (int Child = a_NBT.GetFirstChild(Sections); Child >= 0; Child = a_NBT.GetNextSibling(Child)) + { + int y = 0; + int SectionY = a_NBT.FindChildByName(Child, "Y"); + if ((SectionY < 0) || (a_NBT.GetType(SectionY) != TAG_Byte)) + { + continue; + } + y = a_NBT.GetByte(SectionY); + if ((y < 0) || (y > 15)) + { + continue; + } + CopyNBTData(a_NBT, Child, "Blocks", (char *)&(BlockTypes[y * 4096]), 4096); + CopyNBTData(a_NBT, Child, "Data", (char *)&(MetaData[y * 2048]), 2048); + CopyNBTData(a_NBT, Child, "SkyLight", (char *)&(SkyLight[y * 2048]), 2048); + CopyNBTData(a_NBT, Child, "BlockLight", (char *)&(BlockLight[y * 2048]), 2048); + } // for itr - LevelSections[] + + // Load the biomes from NBT, if present and valid. First try MCS-style, then Vanilla-style: + cChunkDef::BiomeMap BiomeMap; + cChunkDef::BiomeMap * Biomes = LoadBiomeMapFromNBT(&BiomeMap, a_NBT, a_NBT.FindChildByName(Level, "MCSBiomes")); + if (Biomes == NULL) + { + // MCS-style biomes not available, load vanilla-style: + Biomes = LoadVanillaBiomeMapFromNBT(&BiomeMap, a_NBT, a_NBT.FindChildByName(Level, "Biomes")); + } + + // Load the entities from NBT: + cEntityList Entities; + cBlockEntityList BlockEntities; + LoadEntitiesFromNBT (Entities, a_NBT, a_NBT.FindChildByName(Level, "Entities")); + LoadBlockEntitiesFromNBT(BlockEntities, a_NBT, a_NBT.FindChildByName(Level, "TileEntities"), BlockTypes, MetaData); + + bool IsLightValid = (a_NBT.FindChildByName(Level, "MCSIsLightValid") > 0); + + /* + // Uncomment this block for really cool stuff :) + // DEBUG magic: Invert the underground, so that we can see the MC generator in action :) + bool ShouldInvert[cChunkDef::Width * cChunkDef::Width]; + memset(ShouldInvert, 0, sizeof(ShouldInvert)); + for (int y = cChunkDef::Height - 1; y >= 0; y--) + { + for (int x = 0; x < cChunkDef::Width; x++) for (int z = 0; z < cChunkDef::Width; z++) + { + int Index = cChunkDef::MakeIndexNoCheck(x, y, z); + if (ShouldInvert[x + cChunkDef::Width * z]) + { + BlockTypes[Index] = (BlockTypes[Index] == E_BLOCK_AIR) ? E_BLOCK_STONE : E_BLOCK_AIR; + } + else + { + switch (BlockTypes[Index]) + { + case E_BLOCK_AIR: + case E_BLOCK_LEAVES: + { + // nothing needed + break; + } + default: + { + ShouldInvert[x + cChunkDef::Width * z] = true; + } + } + BlockTypes[Index] = E_BLOCK_AIR; + } + } + } // for y + //*/ + + m_World->SetChunkData( + a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, + BlockTypes, MetaData, + IsLightValid ? BlockLight : NULL, + IsLightValid ? SkyLight : NULL, + NULL, Biomes, + Entities, BlockEntities, + false + ); + return true; +} + + + + +void cWSSAnvil::CopyNBTData(const cParsedNBT & a_NBT, int a_Tag, const AString & a_ChildName, char * a_Destination, int a_Length) +{ + int Child = a_NBT.FindChildByName(a_Tag, a_ChildName); + if ((Child >= 0) && (a_NBT.GetType(Child) == TAG_ByteArray) && (a_NBT.GetDataLength(Child) == a_Length)) + { + memcpy(a_Destination, a_NBT.GetData(Child), a_Length); + } +} + + + + + +bool cWSSAnvil::SaveChunkToNBT(const cChunkCoords & a_Chunk, cFastNBTWriter & a_Writer) +{ + a_Writer.BeginCompound("Level"); + a_Writer.AddInt("xPos", a_Chunk.m_ChunkX); + a_Writer.AddInt("zPos", a_Chunk.m_ChunkZ); + cNBTChunkSerializer Serializer(a_Writer); + if (!m_World->GetChunkData(a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, Serializer)) + { + LOGWARNING("Cannot get chunk [%d, %d] data for NBT saving", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ); + return false; + } + Serializer.Finish(); // Close NBT tags + + // Save biomes, both MCS (IntArray) and MC-vanilla (ByteArray): + if (Serializer.m_BiomesAreValid) + { + a_Writer.AddByteArray("Biomes", (const char *)(Serializer.m_VanillaBiomes), ARRAYCOUNT(Serializer.m_VanillaBiomes)); + a_Writer.AddIntArray ("MCSBiomes", (const int *)(Serializer.m_Biomes), ARRAYCOUNT(Serializer.m_Biomes)); + } + + // Save blockdata: + a_Writer.BeginList("Sections", TAG_Compound); + int SliceSizeBlock = cChunkDef::Width * cChunkDef::Width * 16; + int SliceSizeNibble = SliceSizeBlock / 2; + const char * BlockTypes = (const char *)(Serializer.m_BlockTypes); + const char * BlockMetas = (const char *)(Serializer.m_BlockMetas); + #ifdef DEBUG_SKYLIGHT + const char * BlockLight = (const char *)(Serializer.m_BlockSkyLight); + #else + const char * BlockLight = (const char *)(Serializer.m_BlockLight); + #endif + const char * BlockSkyLight = (const char *)(Serializer.m_BlockSkyLight); + for (int Y = 0; Y < 16; Y++) + { + a_Writer.BeginCompound(""); + a_Writer.AddByteArray("Blocks", BlockTypes + Y * SliceSizeBlock, SliceSizeBlock); + a_Writer.AddByteArray("Data", BlockMetas + Y * SliceSizeNibble, SliceSizeNibble); + a_Writer.AddByteArray("SkyLight", BlockSkyLight + Y * SliceSizeNibble, SliceSizeNibble); + a_Writer.AddByteArray("BlockLight", BlockLight + Y * SliceSizeNibble, SliceSizeNibble); + a_Writer.AddByte("Y", (unsigned char)Y); + a_Writer.EndCompound(); + } + a_Writer.EndList(); // "Sections" + + // Store the information that the lighting is valid. + // For compatibility reason, the default is "invalid" (missing) - this means older data is re-lighted upon loading. + if (Serializer.IsLightValid()) + { + a_Writer.AddByte("MCSIsLightValid", 1); + } + + a_Writer.EndCompound(); // "Level" + return true; +} + + + + + +cChunkDef::BiomeMap * cWSSAnvil::LoadVanillaBiomeMapFromNBT(cChunkDef::BiomeMap * a_BiomeMap, const cParsedNBT & a_NBT, int a_TagIdx) +{ + if ((a_TagIdx < 0) || (a_NBT.GetType(a_TagIdx) != TAG_ByteArray)) + { + return NULL; + } + if (a_NBT.GetDataLength(a_TagIdx) != 16 * 16) + { + // The biomes stored don't match in size + return NULL; + } + const unsigned char * VanillaBiomeData = (const unsigned char *)(a_NBT.GetData(a_TagIdx)); + for (int i = 0; i < ARRAYCOUNT(*a_BiomeMap); i++) + { + if ((VanillaBiomeData)[i] == 0xff) + { + // Unassigned biomes + return NULL; + } + (*a_BiomeMap)[i] = (EMCSBiome)(VanillaBiomeData[i]); + } + return a_BiomeMap; +} + + + + + +cChunkDef::BiomeMap * cWSSAnvil::LoadBiomeMapFromNBT(cChunkDef::BiomeMap * a_BiomeMap, const cParsedNBT & a_NBT, int a_TagIdx) +{ + if ((a_TagIdx < 0) || (a_NBT.GetType(a_TagIdx) != TAG_IntArray)) + { + return NULL; + } + if (a_NBT.GetDataLength(a_TagIdx) != sizeof(*a_BiomeMap)) + { + // The biomes stored don't match in size + return NULL; + } + const int * BiomeData = (const int *)(a_NBT.GetData(a_TagIdx)); + for (int i = 0; i < ARRAYCOUNT(*a_BiomeMap); i++) + { + (*a_BiomeMap)[i] = (EMCSBiome)(ntohl(BiomeData[i])); + if ((*a_BiomeMap)[i] == 0xff) + { + // Unassigned biomes + return NULL; + } + } + return a_BiomeMap; +} + + + + + +void cWSSAnvil::LoadEntitiesFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + if ((a_TagIdx < 0) || (a_NBT.GetType(a_TagIdx) != TAG_List)) + { + return; + } + + for (int Child = a_NBT.GetFirstChild(a_TagIdx); Child != -1; Child = a_NBT.GetNextSibling(Child)) + { + if (a_NBT.GetType(Child) != TAG_Compound) + { + continue; + } + int sID = a_NBT.FindChildByName(Child, "id"); + if (sID < 0) + { + continue; + } + LoadEntityFromNBT(a_Entities, a_NBT, Child, a_NBT.GetData(sID), a_NBT.GetDataLength(sID)); + } // for Child - a_NBT[] +} + + + + + +void cWSSAnvil::LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx, BLOCKTYPE * a_BlockTypes, NIBBLETYPE * a_BlockMetas) +{ + if ((a_TagIdx < 0) || (a_NBT.GetType(a_TagIdx) != TAG_List)) + { + return; + } + + for (int Child = a_NBT.GetFirstChild(a_TagIdx); Child != -1; Child = a_NBT.GetNextSibling(Child)) + { + if (a_NBT.GetType(Child) != TAG_Compound) + { + continue; + } + int sID = a_NBT.FindChildByName(Child, "id"); + if (sID < 0) + { + continue; + } + if (strncmp(a_NBT.GetData(sID), "Chest", a_NBT.GetDataLength(sID)) == 0) + { + LoadChestFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "Dropper", a_NBT.GetDataLength(sID)) == 0) + { + LoadDropperFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "Furnace", a_NBT.GetDataLength(sID)) == 0) + { + LoadFurnaceFromNBT(a_BlockEntities, a_NBT, Child, a_BlockTypes, a_BlockMetas); + } + else if (strncmp(a_NBT.GetData(sID), "Hopper", a_NBT.GetDataLength(sID)) == 0) + { + LoadHopperFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "Music", a_NBT.GetDataLength(sID)) == 0) + { + LoadNoteFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "RecordPlayer", a_NBT.GetDataLength(sID)) == 0) + { + LoadJukeboxFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "Sign", a_NBT.GetDataLength(sID)) == 0) + { + LoadSignFromNBT(a_BlockEntities, a_NBT, Child); + } + else if (strncmp(a_NBT.GetData(sID), "Trap", a_NBT.GetDataLength(sID)) == 0) + { + LoadDispenserFromNBT(a_BlockEntities, a_NBT, Child); + } + // TODO: Other block entities + } // for Child - tag children +} + + + + + +bool cWSSAnvil::LoadItemFromNBT(cItem & a_Item, const cParsedNBT & a_NBT, int a_TagIdx) +{ + int ID = a_NBT.FindChildByName(a_TagIdx, "id"); + if ((ID < 0) || (a_NBT.GetType(ID) != TAG_Short)) + { + return false; + } + a_Item.m_ItemType = (ENUM_ITEM_ID)(a_NBT.GetShort(ID)); + + int Damage = a_NBT.FindChildByName(a_TagIdx, "Damage"); + if ((Damage < 0) || (a_NBT.GetType(Damage) != TAG_Short)) + { + return false; + } + a_Item.m_ItemDamage = a_NBT.GetShort(Damage); + + int Count = a_NBT.FindChildByName(a_TagIdx, "Count"); + if ((Count < 0) || (a_NBT.GetType(Count) != TAG_Byte)) + { + return false; + } + a_Item.m_ItemCount = a_NBT.GetByte(Count); + + // Find the "tag" tag, used for enchantments and other extra data + int TagTag = a_NBT.FindChildByName(a_TagIdx, "tag"); + if (TagTag <= 0) + { + // No extra data + return true; + } + + // Load enchantments: + const char * EnchName = (a_Item.m_ItemType == E_ITEM_BOOK) ? "StoredEnchantments" : "ench"; + int EnchTag = a_NBT.FindChildByName(TagTag, EnchName); + if (EnchTag > 0) + { + a_Item.m_Enchantments.ParseFromNBT(a_NBT, EnchTag); + } + + return true; +} + + + + + +void cWSSAnvil::LoadItemGridFromNBT(cItemGrid & a_ItemGrid, const cParsedNBT & a_NBT, int a_ItemsTagIdx, int a_SlotOffset) +{ + int NumSlots = a_ItemGrid.GetNumSlots(); + for (int Child = a_NBT.GetFirstChild(a_ItemsTagIdx); Child != -1; Child = a_NBT.GetNextSibling(Child)) + { + int SlotTag = a_NBT.FindChildByName(Child, "Slot"); + if ((SlotTag < 0) || (a_NBT.GetType(SlotTag) != TAG_Byte)) + { + continue; + } + int SlotNum = (int)(a_NBT.GetByte(SlotTag)) - a_SlotOffset; + if ((SlotNum < 0) || (SlotNum >= NumSlots)) + { + // SlotNum outside of the range + continue; + } + cItem Item; + if (LoadItemFromNBT(Item, a_NBT, Child)) + { + a_ItemGrid.SetSlot(SlotNum, Item); + } + } // for itr - ItemDefs[] +} + + + + + +void cWSSAnvil::LoadChestFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty chest - the chunk loader will provide an empty cChestEntity for this + } + std::auto_ptr<cChestEntity> Chest(new cChestEntity(x, y, z, m_World)); + LoadItemGridFromNBT(Chest->GetContents(), a_NBT, Items); + a_BlockEntities.push_back(Chest.release()); +} + + + + + +void cWSSAnvil::LoadDispenserFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty dispenser - the chunk loader will provide an empty cDispenserEntity for this + } + std::auto_ptr<cDispenserEntity> Dispenser(new cDispenserEntity(x, y, z, m_World)); + LoadItemGridFromNBT(Dispenser->GetContents(), a_NBT, Items); + a_BlockEntities.push_back(Dispenser.release()); +} + + + + + +void cWSSAnvil::LoadDropperFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty dropper - the chunk loader will provide an empty cDropperEntity for this + } + std::auto_ptr<cDropperEntity> Dropper(new cDropperEntity(x, y, z, m_World)); + LoadItemGridFromNBT(Dropper->GetContents(), a_NBT, Items); + a_BlockEntities.push_back(Dropper.release()); +} + + + + + +void cWSSAnvil::LoadFurnaceFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx, BLOCKTYPE * a_BlockTypes, NIBBLETYPE * a_BlockMetas) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty furnace - the chunk loader will provide an empty cFurnaceEntity for this + } + + // Convert coords to relative: + int RelX = x; + int RelZ = z; + int ChunkX, ChunkZ; + cChunkDef::AbsoluteToRelative(RelX, y, RelZ, ChunkX, ChunkZ); + + // Create the furnace entity, with proper BlockType and BlockMeta info: + BLOCKTYPE BlockType = cChunkDef::GetBlock(a_BlockTypes, RelX, y, RelZ); + NIBBLETYPE BlockMeta = cChunkDef::GetNibble(a_BlockMetas, RelX, y, RelZ); + std::auto_ptr<cFurnaceEntity> Furnace(new cFurnaceEntity(x, y, z, BlockType, BlockMeta, m_World)); + + // Load slots: + for (int Child = a_NBT.GetFirstChild(Items); Child != -1; Child = a_NBT.GetNextSibling(Child)) + { + int Slot = a_NBT.FindChildByName(Child, "Slot"); + if ((Slot < 0) || (a_NBT.GetType(Slot) != TAG_Byte)) + { + continue; + } + cItem Item; + if (LoadItemFromNBT(Item, a_NBT, Child)) + { + Furnace->SetSlot(a_NBT.GetByte(Slot), Item); + } + } // for itr - ItemDefs[] + + // Load burn time: + int BurnTime = a_NBT.FindChildByName(a_TagIdx, "BurnTime"); + if (BurnTime >= 0) + { + Int16 bt = a_NBT.GetShort(BurnTime); + // Anvil doesn't store the time that the fuel can burn. We simply "reset" the current value to be the 100% + Furnace->SetBurnTimes(bt, 0); + } + + // Load cook time: + int CookTime = a_NBT.FindChildByName(a_TagIdx, "CookTime"); + if (CookTime >= 0) + { + Int16 ct = a_NBT.GetShort(CookTime); + // Anvil doesn't store the time that an item takes to cook. We simply use the default - 10 seconds (200 ticks) + Furnace->SetCookTimes(200, ct); + } + + // Restart cooking: + Furnace->ContinueCooking(); + a_BlockEntities.push_back(Furnace.release()); +} + + + + + +void cWSSAnvil::LoadHopperFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty hopper - the chunk loader will provide an empty cHopperEntity for this + } + std::auto_ptr<cHopperEntity> Hopper(new cHopperEntity(x, y, z, m_World)); + LoadItemGridFromNBT(Hopper->GetContents(), a_NBT, Items); + a_BlockEntities.push_back(Hopper.release()); +} + + + + + +void cWSSAnvil::LoadJukeboxFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + std::auto_ptr<cJukeboxEntity> Jukebox(new cJukeboxEntity(x, y, z, m_World)); + int Record = a_NBT.FindChildByName(a_TagIdx, "Record"); + if (Record >= 0) + { + Jukebox->SetRecord(a_NBT.GetInt(Record)); + } + a_BlockEntities.push_back(Jukebox.release()); +} + + + + + +void cWSSAnvil::LoadNoteFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + std::auto_ptr<cNoteEntity> Note(new cNoteEntity(x, y, z, m_World)); + int note = a_NBT.FindChildByName(a_TagIdx, "note"); + if (note >= 0) + { + Note->SetPitch(a_NBT.GetByte(note)); + } + a_BlockEntities.push_back(Note.release()); +} + + + + + +void cWSSAnvil::LoadSignFromNBT(cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + ASSERT(a_NBT.GetType(a_TagIdx) == TAG_Compound); + int x, y, z; + if (!GetBlockEntityNBTPos(a_NBT, a_TagIdx, x, y, z)) + { + return; + } + std::auto_ptr<cSignEntity> Sign(new cSignEntity(E_BLOCK_SIGN_POST, x, y, z, m_World)); + + int currentLine = a_NBT.FindChildByName(a_TagIdx, "Text1"); + if (currentLine >= 0) + { + Sign->SetLine(0, a_NBT.GetString(currentLine)); + } + + currentLine = a_NBT.FindChildByName(a_TagIdx, "Text2"); + if (currentLine >= 0) + { + Sign->SetLine(1, a_NBT.GetString(currentLine)); + } + + currentLine = a_NBT.FindChildByName(a_TagIdx, "Text3"); + if (currentLine >= 0) + { + Sign->SetLine(2, a_NBT.GetString(currentLine)); + } + + currentLine = a_NBT.FindChildByName(a_TagIdx, "Text4"); + if (currentLine >= 0) + { + Sign->SetLine(3, a_NBT.GetString(currentLine)); + } + + a_BlockEntities.push_back(Sign.release()); +} + + + + + +void cWSSAnvil::LoadEntityFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_EntityTagIdx, const char * a_IDTag, int a_IDTagLength) +{ + if (strncmp(a_IDTag, "Boat", a_IDTagLength) == 0) + { + LoadBoatFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "FallingBlock", a_IDTagLength) == 0) + { + LoadFallingBlockFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Minecart", a_IDTagLength) == 0) + { + // It is a minecart, old style, find out the type: + int TypeTag = a_NBT.FindChildByName(a_EntityTagIdx, "Type"); + if ((TypeTag < 0) || (a_NBT.GetType(TypeTag) != TAG_Int)) + { + return; + } + switch (a_NBT.GetInt(TypeTag)) + { + case 0: LoadMinecartRFromNBT(a_Entities, a_NBT, a_EntityTagIdx); break; // Rideable minecart + case 1: LoadMinecartCFromNBT(a_Entities, a_NBT, a_EntityTagIdx); break; // Minecart with chest + case 2: LoadMinecartFFromNBT(a_Entities, a_NBT, a_EntityTagIdx); break; // Minecart with furnace + case 3: LoadMinecartTFromNBT(a_Entities, a_NBT, a_EntityTagIdx); break; // Minecart with TNT + case 4: LoadMinecartHFromNBT(a_Entities, a_NBT, a_EntityTagIdx); break; // Minecart with Hopper + } + } + else if (strncmp(a_IDTag, "MinecartRideable", a_IDTagLength) == 0) + { + LoadMinecartRFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "MinecartChest", a_IDTagLength) == 0) + { + LoadMinecartCFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "MinecartFurnace", a_IDTagLength) == 0) + { + LoadMinecartFFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "MinecartTNT", a_IDTagLength) == 0) + { + LoadMinecartTFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "MinecartHopper", a_IDTagLength) == 0) + { + LoadMinecartHFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Item", a_IDTagLength) == 0) + { + LoadPickupFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Arrow", a_IDTagLength) == 0) + { + LoadArrowFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Snowball", a_IDTagLength) == 0) + { + LoadSnowballFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Egg", a_IDTagLength) == 0) + { + LoadEggFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "Fireball", a_IDTagLength) == 0) + { + LoadFireballFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "SmallFireball", a_IDTagLength) == 0) + { + LoadFireChargeFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + else if (strncmp(a_IDTag, "ThrownEnderpearl", a_IDTagLength) == 0) + { + LoadThrownEnderpearlFromNBT(a_Entities, a_NBT, a_EntityTagIdx); + } + // TODO: other entities +} + + + + + +void cWSSAnvil::LoadBoatFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cBoat> Boat(new cBoat(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Boat.get(), a_NBT, a_TagIdx)) + { + return; + } + a_Entities.push_back(Boat.release()); +} + + + + + +void cWSSAnvil::LoadFallingBlockFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + // TODO +} + + + + + +void cWSSAnvil::LoadMinecartRFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cEmptyMinecart> Minecart(new cEmptyMinecart(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx)) + { + return; + } + a_Entities.push_back(Minecart.release()); +} + + + + + +void cWSSAnvil::LoadMinecartCFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + int Items = a_NBT.FindChildByName(a_TagIdx, "Items"); + if ((Items < 0) || (a_NBT.GetType(Items) != TAG_List)) + { + return; // Make it an empty chest - the chunk loader will provide an empty cChestEntity for this + } + std::auto_ptr<cMinecartWithChest> Minecart(new cMinecartWithChest(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx)) + { + return; + } + for (int Child = a_NBT.GetFirstChild(Items); Child != -1; Child = a_NBT.GetNextSibling(Child)) + { + int Slot = a_NBT.FindChildByName(Child, "Slot"); + if ((Slot < 0) || (a_NBT.GetType(Slot) != TAG_Byte)) + { + continue; + } + cItem Item; + if (LoadItemFromNBT(Item, a_NBT, Child)) + { + Minecart->SetSlot(a_NBT.GetByte(Slot), Item); + } + } // for itr - ItemDefs[] + a_Entities.push_back(Minecart.release()); +} + + + + + +void cWSSAnvil::LoadMinecartFFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cMinecartWithFurnace> Minecart(new cMinecartWithFurnace(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx)) + { + return; + } + + // TODO: Load the Push and Fuel tags + + a_Entities.push_back(Minecart.release()); +} + + + + + +void cWSSAnvil::LoadMinecartTFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cMinecartWithTNT> Minecart(new cMinecartWithTNT(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx)) + { + return; + } + + // TODO: Everything to do with TNT carts + + a_Entities.push_back(Minecart.release()); +} + + + + + +void cWSSAnvil::LoadMinecartHFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cMinecartWithHopper> Minecart(new cMinecartWithHopper(0, 0, 0)); + if (!LoadEntityBaseFromNBT(*Minecart.get(), a_NBT, a_TagIdx)) + { + return; + } + + // TODO: Everything to do with hopper carts + + a_Entities.push_back(Minecart.release()); +} + + + + + +void cWSSAnvil::LoadPickupFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + int ItemTag = a_NBT.FindChildByName(a_TagIdx, "Item"); + if ((ItemTag < 0) || (a_NBT.GetType(ItemTag) != TAG_Compound)) + { + return; + } + cItem Item; + if (!LoadItemFromNBT(Item, a_NBT, ItemTag)) + { + return; + } + std::auto_ptr<cPickup> Pickup(new cPickup(0, 0, 0, Item, false)); // Pickup delay doesn't matter, just say false + if (!LoadEntityBaseFromNBT(*Pickup.get(), a_NBT, a_TagIdx)) + { + return; + } + a_Entities.push_back(Pickup.release()); +} + + + + + +void cWSSAnvil::LoadArrowFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cArrowEntity> Arrow(new cArrowEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*Arrow.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Load pickup state: + int PickupIdx = a_NBT.FindChildByName(a_TagIdx, "pickup"); + if (PickupIdx > 0) + { + Arrow->SetPickupState((cArrowEntity::ePickupState)a_NBT.GetByte(PickupIdx)); + } + else + { + // Try the older "player" tag: + int PlayerIdx = a_NBT.FindChildByName(a_TagIdx, "player"); + if (PlayerIdx > 0) + { + Arrow->SetPickupState((a_NBT.GetByte(PlayerIdx) == 0) ? cArrowEntity::psNoPickup : cArrowEntity::psInSurvivalOrCreative); + } + } + + // Load damage: + int DamageIdx = a_NBT.FindChildByName(a_TagIdx, "damage"); + if (DamageIdx > 0) + { + Arrow->SetDamageCoeff(a_NBT.GetDouble(DamageIdx)); + } + + // Store the new arrow in the entities list: + a_Entities.push_back(Arrow.release()); +} + + + + + +void cWSSAnvil::LoadSnowballFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cThrownSnowballEntity> Snowball(new cThrownSnowballEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*Snowball.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Store the new snowball in the entities list: + a_Entities.push_back(Snowball.release()); +} + + + + + +void cWSSAnvil::LoadEggFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cThrownEggEntity> Egg(new cThrownEggEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*Egg.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Store the new egg in the entities list: + a_Entities.push_back(Egg.release()); +} + + + + + +void cWSSAnvil::LoadFireballFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cGhastFireballEntity> Fireball(new cGhastFireballEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*Fireball.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Store the new fireball in the entities list: + a_Entities.push_back(Fireball.release()); +} + + + + + +void cWSSAnvil::LoadFireChargeFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cFireChargeEntity> FireCharge(new cFireChargeEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*FireCharge.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Store the new FireCharge in the entities list: + a_Entities.push_back(FireCharge.release()); +} + + + + + +void cWSSAnvil::LoadThrownEnderpearlFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx) +{ + std::auto_ptr<cThrownEnderPearlEntity> Enderpearl(new cThrownEnderPearlEntity(NULL, 0, 0, 0, Vector3d(0, 0, 0))); + if (!LoadProjectileBaseFromNBT(*Enderpearl.get(), a_NBT, a_TagIdx)) + { + return; + } + + // Store the new enderpearl in the entities list: + a_Entities.push_back(Enderpearl.release()); +} + + + + + +bool cWSSAnvil::LoadEntityBaseFromNBT(cEntity & a_Entity, const cParsedNBT & a_NBT, int a_TagIdx) +{ + double Pos[3]; + if (!LoadDoublesListFromNBT(Pos, 3, a_NBT, a_NBT.FindChildByName(a_TagIdx, "Pos"))) + { + return false; + } + a_Entity.SetPosition(Pos[0], Pos[1], Pos[2]); + + double Speed[3]; + if (!LoadDoublesListFromNBT(Speed, 3, a_NBT, a_NBT.FindChildByName(a_TagIdx, "Motion"))) + { + return false; + } + a_Entity.SetSpeed(Speed[0], Speed[1], Speed[2]); + + double Rotation[3]; + if (!LoadDoublesListFromNBT(Rotation, 2, a_NBT, a_NBT.FindChildByName(a_TagIdx, "Rotation"))) + { + return false; + } + a_Entity.SetRotation(Rotation[0]); + a_Entity.SetRoll (Rotation[1]); + + return true; +} + + + + + +bool cWSSAnvil::LoadProjectileBaseFromNBT(cProjectileEntity & a_Entity, const cParsedNBT & a_NBT, int a_TagIdx) +{ + if (!LoadEntityBaseFromNBT(a_Entity, a_NBT, a_TagIdx)) + { + return false; + } + + bool IsInGround = false; + int InGroundIdx = a_NBT.FindChildByName(a_TagIdx, "inGround"); + if (InGroundIdx > 0) + { + IsInGround = (a_NBT.GetByte(InGroundIdx) != 0); + } + a_Entity.SetIsInGround(IsInGround); + + // TODO: Load inTile, TileCoords + + return true; +} + + + + + +bool cWSSAnvil::LoadDoublesListFromNBT(double * a_Doubles, int a_NumDoubles, const cParsedNBT & a_NBT, int a_TagIdx) +{ + if ((a_TagIdx < 0) || (a_NBT.GetType(a_TagIdx) != TAG_List) || (a_NBT.GetChildrenType(a_TagIdx) != TAG_Double)) + { + return false; + } + int idx = 0; + for (int Tag = a_NBT.GetFirstChild(a_TagIdx); (Tag > 0) && (idx < a_NumDoubles); Tag = a_NBT.GetNextSibling(Tag), ++idx) + { + a_Doubles[idx] = a_NBT.GetDouble(Tag); + } // for Tag - PosTag[] + return (idx == a_NumDoubles); // Did we read enough doubles? +} + + + + + +bool cWSSAnvil::GetBlockEntityNBTPos(const cParsedNBT & a_NBT, int a_TagIdx, int & a_X, int & a_Y, int & a_Z) +{ + int x = a_NBT.FindChildByName(a_TagIdx, "x"); + if ((x < 0) || (a_NBT.GetType(x) != TAG_Int)) + { + return false; + } + int y = a_NBT.FindChildByName(a_TagIdx, "y"); + if ((y < 0) || (a_NBT.GetType(y) != TAG_Int)) + { + return false; + } + int z = a_NBT.FindChildByName(a_TagIdx, "z"); + if ((z < 0) || (a_NBT.GetType(z) != TAG_Int)) + { + return false; + } + a_X = a_NBT.GetInt(x); + a_Y = a_NBT.GetInt(y); + a_Z = a_NBT.GetInt(z); + return true; +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cWSSAnvil::cMCAFile: + +cWSSAnvil::cMCAFile::cMCAFile(const AString & a_FileName, int a_RegionX, int a_RegionZ) : + m_RegionX(a_RegionX), + m_RegionZ(a_RegionZ), + m_FileName(a_FileName) +{ +} + + + + + +bool cWSSAnvil::cMCAFile::OpenFile(bool a_IsForReading) +{ + if (m_File.IsOpen()) + { + // Already open + return true; + } + + if (a_IsForReading) + { + if (!cFile::Exists(m_FileName)) + { + // We want to read and the file doesn't exist. Fail. + return false; + } + } + + if (!m_File.Open(m_FileName, cFile::fmReadWrite)) + { + // The file failed to open + return false; + } + + // Load the header: + if (m_File.Read(m_Header, sizeof(m_Header)) != sizeof(m_Header)) + { + // Cannot read the header - perhaps the file has just been created? + // Try writing a NULL header (both chunk offsets and timestamps): + memset(m_Header, 0, sizeof(m_Header)); + if ( + (m_File.Write(m_Header, sizeof(m_Header)) != sizeof(m_Header)) || // Real header - chunk offsets + (m_File.Write(m_Header, sizeof(m_Header)) != sizeof(m_Header)) // Bogus data for the chunk timestamps + ) + { + LOGWARNING("Cannot process MCA header in file \"%s\", chunks in that file will be lost", m_FileName.c_str()); + m_File.Close(); + return false; + } + } + return true; +} + + + + + +bool cWSSAnvil::cMCAFile::GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data) +{ + if (!OpenFile(true)) + { + return false; + } + + int LocalX = a_Chunk.m_ChunkX % 32; + if (LocalX < 0) + { + LocalX = 32 + LocalX; + } + int LocalZ = a_Chunk.m_ChunkZ % 32; + if (LocalZ < 0) + { + LocalZ = 32 + LocalZ; + } + unsigned ChunkLocation = ntohl(m_Header[LocalX + 32 * LocalZ]); + unsigned ChunkOffset = ChunkLocation >> 8; + + m_File.Seek(ChunkOffset * 4096); + + int ChunkSize = 0; + if (m_File.Read(&ChunkSize, 4) != 4) + { + return false; + } + ChunkSize = ntohl(ChunkSize); + char CompressionType = 0; + if (m_File.Read(&CompressionType, 1) != 1) + { + return false; + } + if (CompressionType != 2) + { + // Chunk is in an unknown compression + return false; + } + ChunkSize--; + + // HACK: This depends on the internal knowledge that AString's data() function returns the internal buffer directly + a_Data.assign(ChunkSize, '\0'); + return (m_File.Read((void *)a_Data.data(), ChunkSize) == ChunkSize); +} + + + + + +bool cWSSAnvil::cMCAFile::SetChunkData(const cChunkCoords & a_Chunk, const AString & a_Data) +{ + if (!OpenFile(false)) + { + LOGWARNING("Cannot save chunk [%d, %d], opening file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + + int LocalX = a_Chunk.m_ChunkX % 32; + if (LocalX < 0) + { + LocalX = 32 + LocalX; + } + int LocalZ = a_Chunk.m_ChunkZ % 32; + if (LocalZ < 0) + { + LocalZ = 32 + LocalZ; + } + + unsigned ChunkSector = FindFreeLocation(LocalX, LocalZ, a_Data); + + // Store the chunk data: + m_File.Seek(ChunkSector * 4096); + unsigned ChunkSize = htonl(a_Data.size() + 1); + if (m_File.Write(&ChunkSize, 4) != 4) + { + LOGWARNING("Cannot save chunk [%d, %d], writing(1) data to file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + char CompressionType = 2; + if (m_File.Write(&CompressionType, 1) != 1) + { + LOGWARNING("Cannot save chunk [%d, %d], writing(2) data to file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + if (m_File.Write(a_Data.data(), a_Data.size()) != (int)(a_Data.size())) + { + LOGWARNING("Cannot save chunk [%d, %d], writing(3) data to file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + + // Store the header: + ChunkSize = (a_Data.size() + MCA_CHUNK_HEADER_LENGTH + 4095) / 4096; // Round data size *up* to nearest 4KB sector, make it a sector number + ASSERT(ChunkSize < 256); + m_Header[LocalX + 32 * LocalZ] = htonl((ChunkSector << 8) | ChunkSize); + if (m_File.Seek(0) < 0) + { + LOGWARNING("Cannot save chunk [%d, %d], seeking in file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + if (m_File.Write(m_Header, sizeof(m_Header)) != sizeof(m_Header)) + { + LOGWARNING("Cannot save chunk [%d, %d], writing header to file \"%s\" failed", a_Chunk.m_ChunkX, a_Chunk.m_ChunkZ, GetFileName().c_str()); + return false; + } + + return true; +} + + + + + +unsigned cWSSAnvil::cMCAFile::FindFreeLocation(int a_LocalX, int a_LocalZ, const AString & a_Data) +{ + // See if it fits the current location: + unsigned ChunkLocation = ntohl(m_Header[a_LocalX + 32 * a_LocalZ]); + unsigned ChunkLen = ChunkLocation & 0xff; + if (a_Data.size() + MCA_CHUNK_HEADER_LENGTH <= (ChunkLen * 4096)) + { + return ChunkLocation >> 8; + } + + // Doesn't fit, append to the end of file (we're wasting a lot of space, TODO: fix this later) + unsigned MaxLocation = 2 << 8; // Minimum sector is #2 - after the headers + for (int i = 0; i < ARRAYCOUNT(m_Header); i++) + { + ChunkLocation = ntohl(m_Header[i]); + ChunkLocation = ChunkLocation + ((ChunkLocation & 0xff) << 8); // Add the number of sectors used; don't care about the 4th byte + if (MaxLocation < ChunkLocation) + { + MaxLocation = ChunkLocation; + } + } // for i - m_Header[] + return MaxLocation >> 8; +} + + + + |