/*
* This file is part of Sponge, licensed under the MIT License (MIT).
*
* Copyright (c) SpongePowered <https://www.spongepowered.org>
* Copyright (c) contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.spongepowered.server.world.chunkio;
import static net.minecraft.world.chunk.storage.AnvilChunkLoader.readChunkEntity;
import net.minecraft.block.Block;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.datafix.FixTypes;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.ChunkPos;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.storage.AnvilChunkLoader;
import net.minecraft.world.chunk.storage.RegionFileCache;
import java.io.DataInputStream;
import java.io.IOException;
public final class AsyncAnvilChunkLoader {
private AsyncAnvilChunkLoader() {
}
/**
* Returns the NBT data for the chunk. Returns the cached data if already
* loaded, otherwise it will check the stored files for the chunk.
*
* <p>This is save to call asynchronously from a separate thread.</p>
*
* @param loader The loader to use for loading the data
* @param x The x coordinate of the chunk
* @param z The y coordinate of the chunk
* @return The NBT data, or null if no data is present for the chunk
* @throws IOException If an error occurs while reading the chunk
*/
public static NBTTagCompound read(AnvilChunkLoader loader, int x, int z) throws IOException {
// Copied from AnvilChunkLoader.loadChunk, keep this up-to-date!
ChunkPos chunkpos = new ChunkPos(x, z);
NBTTagCompound nbttagcompound = loader.chunksToRemove.get(chunkpos);
if (nbttagcompound == null) {
DataInputStream datainputstream = RegionFileCache.getChunkInputStream(loader.chunkSaveLocation, x, z);
if (datainputstream == null) {
return null;
}
nbttagcompound = loader.dataFixer.process(FixTypes.CHUNK, CompressedStreamTools.read(datainputstream));
}
// Sponge: Return NBT data and load chunk later
return nbttagcompound;
}
/**
* Finishes the loading of a chunk and adds stored entities and tile
* entities.
*
* <p>This part of the chunk loading should be <b>always</b> called
* on the main thread.</p>
*
* @param worldIn The world to load the chunk in
* @param chunk The chunk to add the entities to
* @param compound The loaded data of the chunk
*/
public static void loadEntities(World worldIn, Chunk chunk, NBTTagCompound compound) {
compound = compound.getCompoundTag("Level"); // Sponge: Method below expects Level nbt compound
// Copied from AnvilChunkLoader.readChunkFromNBT, keep this up-to-date!
NBTTagList nbttaglist1 = compound.getTagList("Entities", 10);
for (int j1 = 0; j1 < nbttaglist1.tagCount(); ++j1) {
NBTTagCompound nbttagcompound1 = nbttaglist1.getCompoundTagAt(j1);
readChunkEntity(nbttagcompound1, worldIn, chunk);
chunk.setHasEntities(true);
}
NBTTagList nbttaglist2 = compound.getTagList("TileEntities", 10);
for (int k1 = 0; k1 < nbttaglist2.tagCount(); ++k1) {
NBTTagCompound nbttagcompound2 = nbttaglist2.getCompoundTagAt(k1);
TileEntity tileentity = TileEntity.create(worldIn, nbttagcompound2);
if (tileentity != null) {
chunk.addTileEntity(tileentity);
}
}
if (compound.hasKey("TileTicks", 9)) {
NBTTagList nbttaglist3 = compound.getTagList("TileTicks", 10);
for (int l1 = 0; l1 < nbttaglist3.tagCount(); ++l1) {
NBTTagCompound nbttagcompound3 = nbttaglist3.getCompoundTagAt(l1);
Block block;
if (nbttagcompound3.hasKey("i", 8)) {
block = Block.getBlockFromName(nbttagcompound3.getString("i"));
} else {
block = Block.getBlockById(nbttagcompound3.getInteger("i"));
}
worldIn.scheduleBlockUpdate(new BlockPos(nbttagcompound3.getInteger("x"), nbttagcompound3.getInteger("y"), nbttagcompound3.getInteger("z")),
block, nbttagcompound3.getInteger("t"), nbttagcompound3.getInteger("p"));
}
}
}
}