package net.minecraft.world.chunk.storage;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import cpw.mods.fml.common.FMLLog;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityList;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.ChunkCoordIntPair;
import net.minecraft.world.MinecraftException;
import net.minecraft.world.NextTickListEntry;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.NibbleArray;
import net.minecraft.world.storage.IThreadedFileIO;
import net.minecraft.world.storage.ThreadedFileIOBase;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.world.ChunkDataEvent;
public class AnvilChunkLoader implements IChunkLoader, IThreadedFileIO
{
private List chunksToRemove = new ArrayList();
private Set pendingAnvilChunksCoordinates = new HashSet();
private Object syncLockObject = new Object();
/** Save directory for chunks using the Anvil format */
public final File chunkSaveLocation;
public AnvilChunkLoader(File par1File)
{
this.chunkSaveLocation = par1File;
}
/**
* Loads the specified(XZ) chunk into the specified world.
*/
public Chunk loadChunk(World par1World, int par2, int par3) throws IOException
{
NBTTagCompound nbttagcompound = null;
ChunkCoordIntPair chunkcoordintpair = new ChunkCoordIntPair(par2, par3);
Object object = this.syncLockObject;
synchronized (this.syncLockObject)
{
if (this.pendingAnvilChunksCoordinates.contains(chunkcoordintpair))
{
for (int k = 0; k < this.chunksToRemove.size(); ++k)
{
if (((AnvilChunkLoaderPending)this.chunksToRemove.get(k)).chunkCoordinate.equals(chunkcoordintpair))
{
nbttagcompound = ((AnvilChunkLoaderPending)this.chunksToRemove.get(k)).nbtTags;
break;
}
}
}
}
if (nbttagcompound == null)
{
DataInputStream datainputstream = RegionFileCache.getChunkInputStream(this.chunkSaveLocation, par2, par3);
if (datainputstream == null)
{
return null;
}
nbttagcompound = CompressedStreamTools.read(datainputstream);
}
return this.checkedReadChunkFromNBT(par1World, par2, par3, nbttagcompound);
}
/**
* Wraps readChunkFromNBT. Checks the coordinates and several NBT tags.
*/
protected Chunk checkedReadChunkFromNBT(World par1World, int par2, int par3, NBTTagCompound par4NBTTagCompound)
{
if (!par4NBTTagCompound.hasKey("Level"))
{
par1World.getWorldLogAgent().logSevere("Chunk file at " + par2 + "," + par3 + " is missing level data, skipping");
return null;
}
else if (!par4NBTTagCompound.getCompoundTag("Level").hasKey("Sections"))
{
par1World.getWorldLogAgent().logSevere("Chunk file at " + par2 + "," + par3 + " is missing block data, skipping");
return null;
}
else
{
Chunk chunk = this.readChunkFromNBT(par1World, par4NBTTagCompound.getCompoundTag("Level"));
if (!chunk.isAtLocation(par2, par3))
{
par1World.getWorldLogAgent().logSevere("Chunk file at " + par2 + "," + par3 + " is in the wrong location; relocating. (Expected " + par2 + ", " + par3 + ", got " + chunk.xPosition + ", " + chunk.zPosition + ")");
par4NBTTagCompound.setInteger("xPos", par2);
par4NBTTagCompound.setInteger("zPos", par3);
chunk = this.readChunkFromNBT(par1World, par4NBTTagCompound.getCompoundTag("Level"));
}
MinecraftForge.EVENT_BUS.post(new ChunkDataEvent.Load(chunk, par4NBTTagCompound));
return chunk;
}
}
public void saveChunk(World par1World, Chunk par2Chunk) throws MinecraftException, IOException
{
par1World.checkSessionLock();
try
{
NBTTagCompound nbttagcompound = new NBTTagCompound();
NBTTagCompound nbttagcompound1 = new NBTTagCompound();
nbttagcompound.setTag("Level", nbttagcompound1);
this.writeChunkToNBT(par2Chunk, par1World, nbttagcompound1);
MinecraftForge.EVENT_BUS.post(new ChunkDataEvent.Save(par2Chunk, nbttagcompound));
this.addChunkToPending(par2Chunk.getChunkCoordIntPair(), nbttagcompound);
}
catch (Exception exception)
{
exception.printStackTrace();
}
}
protected void addChunkToPending(ChunkCoordIntPair par1ChunkCoordIntPair, NBTTagCompound par2NBTTagCompound)
{
Object object = this.syncLockObject;
synchronized (this.syncLockObject)
{
if (this.pendingAnvilChunksCoordinates.contains(par1ChunkCoordIntPair))
{
for (int i = 0; i < this.chunksToRemove.size(); ++i)
{
if (((AnvilChunkLoaderPending)this.chunksToRemove.get(i)).chunkCoordinate.equals(par1ChunkCoordIntPair))
{
this.chunksToRemove.set(i, new AnvilChunkLoaderPending(par1ChunkCoordIntPair, par2NBTTagCompound));
return;
}
}
}
this.chunksToRemove.add(new AnvilChunkLoaderPending(par1ChunkCoordIntPair, par2NBTTagCompound));
this.pendingAnvilChunksCoordinates.add(par1ChunkCoordIntPair);
ThreadedFileIOBase.threadedIOInstance.queueIO(this);
}
}
/**
* Returns a boolean stating if the write was unsuccessful.
*/
public boolean writeNextIO()
{
AnvilChunkLoaderPending anvilchunkloaderpending = null;
Object object = this.syncLockObject;
synchronized (this.syncLockObject)
{
if (this.chunksToRemove.isEmpty())
{
return false;
}
anvilchunkloaderpending = (AnvilChunkLoaderPending)this.chunksToRemove.remove(0);
this.pendingAnvilChunksCoordinates.remove(anvilchunkloaderpending.chunkCoordinate);
}
if (anvilchunkloaderpending != null)
{
try
{
this.writeChunkNBTTags(anvilchunkloaderpending);
}
catch (Exception exception)
{
exception.printStackTrace();
}
}
return true;
}
private void writeChunkNBTTags(AnvilChunkLoaderPending par1AnvilChunkLoaderPending) throws IOException
{
DataOutputStream dataoutputstream = RegionFileCache.getChunkOutputStream(this.chunkSaveLocation, par1AnvilChunkLoaderPending.chunkCoordinate.chunkXPos, par1AnvilChunkLoaderPending.chunkCoordinate.chunkZPos);
CompressedStreamTools.write(par1AnvilChunkLoaderPending.nbtTags, dataoutputstream);
dataoutputstream.close();
}
/**
* Save extra data associated with this Chunk not normally saved during autosave, only during chunk unload.
* Currently unused.
*/
public void saveExtraChunkData(World par1World, Chunk par2Chunk) {}
/**
* Called every World.tick()
*/
public void chunkTick() {}
/**
* Save extra data not associated with any Chunk. Not saved during autosave, only during world unload. Currently
* unused.
*/
public void saveExtraData()
{
while (this.writeNextIO())
{
;
}
}
/**
* Writes the Chunk passed as an argument to the NBTTagCompound also passed, using the World argument to retrieve
* the Chunk's last update time.
*/
private void writeChunkToNBT(Chunk par1Chunk, World par2World, NBTTagCompound par3NBTTagCompound)
{
par3NBTTagCompound.setInteger("xPos", par1Chunk.xPosition);
par3NBTTagCompound.setInteger("zPos", par1Chunk.zPosition);
par3NBTTagCompound.setLong("LastUpdate", par2World.getTotalWorldTime());
par3NBTTagCompound.setIntArray("HeightMap", par1Chunk.heightMap);
par3NBTTagCompound.setBoolean("TerrainPopulated", par1Chunk.isTerrainPopulated);
ExtendedBlockStorage[] aextendedblockstorage = par1Chunk.getBlockStorageArray();
NBTTagList nbttaglist = new NBTTagList("Sections");
boolean flag = !par2World.provider.hasNoSky;
ExtendedBlockStorage[] aextendedblockstorage1 = aextendedblockstorage;
int i = aextendedblockstorage.length;
NBTTagCompound nbttagcompound1;
for (int j = 0; j < i; ++j)
{
ExtendedBlockStorage extendedblockstorage = aextendedblockstorage1[j];
if (extendedblockstorage != null)
{
nbttagcompound1 = new NBTTagCompound();
nbttagcompound1.setByte("Y", (byte)(extendedblockstorage.getYLocation() >> 4 & 255));
nbttagcompound1.setByteArray("Blocks", extendedblockstorage.getBlockLSBArray());
if (extendedblockstorage.getBlockMSBArray() != null)
{
nbttagcompound1.setByteArray("Add", extendedblockstorage.getBlockMSBArray().data);
}
nbttagcompound1.setByteArray("Data", extendedblockstorage.getMetadataArray().data);
nbttagcompound1.setByteArray("BlockLight", extendedblockstorage.getBlocklightArray().data);
if (flag)
{
nbttagcompound1.setByteArray("SkyLight", extendedblockstorage.getSkylightArray().data);
}
else
{
nbttagcompound1.setByteArray("SkyLight", new byte[extendedblockstorage.getBlocklightArray().data.length]);
}
nbttaglist.appendTag(nbttagcompound1);
}
}
par3NBTTagCompound.setTag("Sections", nbttaglist);
par3NBTTagCompound.setByteArray("Biomes", par1Chunk.getBiomeArray());
par1Chunk.hasEntities = false;
NBTTagList nbttaglist1 = new NBTTagList();
Iterator iterator;
for (i = 0; i < par1Chunk.entityLists.length; ++i)
{
iterator = par1Chunk.entityLists[i].iterator();
while (iterator.hasNext())
{
Entity entity = (Entity)iterator.next();
nbttagcompound1 = new NBTTagCompound();
try
{
if (entity.addEntityID(nbttagcompound1))
{
par1Chunk.hasEntities = true;
nbttaglist1.appendTag(nbttagcompound1);
}
}
catch (Exception e)
{
FMLLog.log(Level.SEVERE, e,
"An Entity type %s has thrown an exception trying to write state. It will not persist. Report this to the mod author",
entity.getClass().getName());
}
}
}
par3NBTTagCompound.setTag("Entities", nbttaglist1);
NBTTagList nbttaglist2 = new NBTTagList();
iterator = par1Chunk.chunkTileEntityMap.values().iterator();
while (iterator.hasNext())
{
TileEntity tileentity = (TileEntity)iterator.next();
nbttagcompound1 = new NBTTagCompound();
try
{
tileentity.writeToNBT(nbttagcompound1);
nbttaglist2.appendTag(nbttagcompound1);
}
catch (Exception e)
{
FMLLog.log(Level.SEVERE, e,
"A TileEntity type %s has throw an exception trying to write state. It will not persist. Report this to the mod author",
tileentity.getClass().getName());
}
}
par3NBTTagCompound.setTag("TileEntities", nbttaglist2);
List list = par2World.getPendingBlockUpdates(par1Chunk, false);
if (list != null)
{
long k = par2World.getTotalWorldTime();
NBTTagList nbttaglist3 = new NBTTagList();
Iterator iterator1 = list.iterator();
while (iterator1.hasNext())
{
NextTickListEntry nextticklistentry = (NextTickListEntry)iterator1.next();
NBTTagCompound nbttagcompound2 = new NBTTagCompound();
nbttagcompound2.setInteger("i", nextticklistentry.blockID);
nbttagcompound2.setInteger("x", nextticklistentry.xCoord);
nbttagcompound2.setInteger("y", nextticklistentry.yCoord);
nbttagcompound2.setInteger("z", nextticklistentry.zCoord);
nbttagcompound2.setInteger("t", (int)(nextticklistentry.scheduledTime - k));
nbttagcompound2.setInteger("p", nextticklistentry.field_82754_f);
nbttaglist3.appendTag(nbttagcompound2);
}
par3NBTTagCompound.setTag("TileTicks", nbttaglist3);
}
}
/**
* Reads the data stored in the passed NBTTagCompound and creates a Chunk with that data in the passed World.
* Returns the created Chunk.
*/
private Chunk readChunkFromNBT(World par1World, NBTTagCompound par2NBTTagCompound)
{
int i = par2NBTTagCompound.getInteger("xPos");
int j = par2NBTTagCompound.getInteger("zPos");
Chunk chunk = new Chunk(par1World, i, j);
chunk.heightMap = par2NBTTagCompound.getIntArray("HeightMap");
chunk.isTerrainPopulated = par2NBTTagCompound.getBoolean("TerrainPopulated");
NBTTagList nbttaglist = par2NBTTagCompound.getTagList("Sections");
byte b0 = 16;
ExtendedBlockStorage[] aextendedblockstorage = new ExtendedBlockStorage[b0];
boolean flag = !par1World.provider.hasNoSky;
for (int k = 0; k < nbttaglist.tagCount(); ++k)
{
NBTTagCompound nbttagcompound1 = (NBTTagCompound)nbttaglist.tagAt(k);
byte b1 = nbttagcompound1.getByte("Y");
ExtendedBlockStorage extendedblockstorage = new ExtendedBlockStorage(b1 << 4, flag);
extendedblockstorage.setBlockLSBArray(nbttagcompound1.getByteArray("Blocks"));
if (nbttagcompound1.hasKey("Add"))
{
extendedblockstorage.setBlockMSBArray(new NibbleArray(nbttagcompound1.getByteArray("Add"), 4));
}
extendedblockstorage.setBlockMetadataArray(new NibbleArray(nbttagcompound1.getByteArray("Data"), 4));
extendedblockstorage.setBlocklightArray(new NibbleArray(nbttagcompound1.getByteArray("BlockLight"), 4));
if (flag)
{
extendedblockstorage.setSkylightArray(new NibbleArray(nbttagcompound1.getByteArray("SkyLight"), 4));
}
extendedblockstorage.removeInvalidBlocks();
aextendedblockstorage[b1] = extendedblockstorage;
}
chunk.setStorageArrays(aextendedblockstorage);
if (par2NBTTagCompound.hasKey("Biomes"))
{
chunk.setBiomeArray(par2NBTTagCompound.getByteArray("Biomes"));
}
NBTTagList nbttaglist1 = par2NBTTagCompound.getTagList("Entities");
if (nbttaglist1 != null)
{
for (int l = 0; l < nbttaglist1.tagCount(); ++l)
{
NBTTagCompound nbttagcompound2 = (NBTTagCompound)nbttaglist1.tagAt(l);
Entity entity = EntityList.createEntityFromNBT(nbttagcompound2, par1World);
chunk.hasEntities = true;
if (entity != null)
{
chunk.addEntity(entity);
Entity entity1 = entity;
for (NBTTagCompound nbttagcompound3 = nbttagcompound2; nbttagcompound3.hasKey("Riding"); nbttagcompound3 = nbttagcompound3.getCompoundTag("Riding"))
{
Entity entity2 = EntityList.createEntityFromNBT(nbttagcompound3.getCompoundTag("Riding"), par1World);
if (entity2 != null)
{
chunk.addEntity(entity2);
entity1.mountEntity(entity2);
}
entity1 = entity2;
}
}
}
}
NBTTagList nbttaglist2 = par2NBTTagCompound.getTagList("TileEntities");
if (nbttaglist2 != null)
{
for (int i1 = 0; i1 < nbttaglist2.tagCount(); ++i1)
{
NBTTagCompound nbttagcompound4 = (NBTTagCompound)nbttaglist2.tagAt(i1);
TileEntity tileentity = TileEntity.createAndLoadEntity(nbttagcompound4);
if (tileentity != null)
{
chunk.addTileEntity(tileentity);
}
}
}
if (par2NBTTagCompound.hasKey("TileTicks"))
{
NBTTagList nbttaglist3 = par2NBTTagCompound.getTagList("TileTicks");
if (nbttaglist3 != null)
{
for (int j1 = 0; j1 < nbttaglist3.tagCount(); ++j1)
{
NBTTagCompound nbttagcompound5 = (NBTTagCompound)nbttaglist3.tagAt(j1);
par1World.scheduleBlockUpdateFromLoad(nbttagcompound5.getInteger("x"), nbttagcompound5.getInteger("y"), nbttagcompound5.getInteger("z"), nbttagcompound5.getInteger("i"), nbttagcompound5.getInteger("t"), nbttagcompound5.getInteger("p"));
}
}
}
return chunk;
}
}