421 lines
16 KiB
Java
421 lines
16 KiB
Java
package org.bukkit.craftbukkit;
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import com.google.common.base.Preconditions;
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import com.google.common.base.Predicates;
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import com.mojang.serialization.Codec;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Objects;
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import java.util.concurrent.locks.LockSupport;
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import java.util.function.BooleanSupplier;
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import java.util.function.Predicate;
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import net.minecraft.core.BlockPosition;
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import net.minecraft.core.Holder;
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import net.minecraft.core.IRegistry;
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import net.minecraft.core.SectionPosition;
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import net.minecraft.core.registries.Registries;
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import net.minecraft.nbt.DynamicOpsNBT;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.server.level.WorldServer;
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import net.minecraft.util.thread.ThreadedMailbox;
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import net.minecraft.world.level.ChunkCoordIntPair;
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import net.minecraft.world.level.EnumSkyBlock;
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import net.minecraft.world.level.biome.BiomeBase;
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import net.minecraft.world.level.biome.Biomes;
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import net.minecraft.world.level.block.Blocks;
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import net.minecraft.world.level.block.state.IBlockData;
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import net.minecraft.world.level.chunk.ChunkSection;
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import net.minecraft.world.level.chunk.ChunkStatus;
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import net.minecraft.world.level.chunk.DataPaletteBlock;
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import net.minecraft.world.level.chunk.IChunkAccess;
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import net.minecraft.world.level.chunk.NibbleArray;
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import net.minecraft.world.level.chunk.PalettedContainerRO;
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import net.minecraft.world.level.chunk.ProtoChunkExtension;
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import net.minecraft.world.level.chunk.storage.ChunkRegionLoader;
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import net.minecraft.world.level.chunk.storage.EntityStorage;
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import net.minecraft.world.level.entity.PersistentEntitySectionManager;
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import net.minecraft.world.level.levelgen.HeightMap;
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import net.minecraft.world.level.levelgen.SeededRandom;
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import net.minecraft.world.level.lighting.LevelLightEngine;
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import org.bukkit.Chunk;
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import org.bukkit.ChunkSnapshot;
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import org.bukkit.World;
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import org.bukkit.block.Biome;
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import org.bukkit.block.Block;
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import org.bukkit.block.BlockState;
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import org.bukkit.block.data.BlockData;
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import org.bukkit.craftbukkit.block.CraftBlock;
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import org.bukkit.craftbukkit.block.data.CraftBlockData;
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import org.bukkit.entity.Entity;
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import org.bukkit.persistence.PersistentDataContainer;
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import org.bukkit.plugin.Plugin;
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public class CraftChunk implements Chunk {
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private final WorldServer worldServer;
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private final int x;
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private final int z;
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private static final DataPaletteBlock<IBlockData> emptyBlockIDs = new DataPaletteBlock<>(net.minecraft.world.level.block.Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), DataPaletteBlock.d.SECTION_STATES);
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private static final byte[] emptyLight = new byte[2048];
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public CraftChunk(net.minecraft.world.level.chunk.Chunk chunk) {
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worldServer = chunk.level;
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x = chunk.getPos().x;
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z = chunk.getPos().z;
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}
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public CraftChunk(WorldServer worldServer, int x, int z) {
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this.worldServer = worldServer;
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this.x = x;
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this.z = z;
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}
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@Override
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public World getWorld() {
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return worldServer.getWorld();
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}
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public CraftWorld getCraftWorld() {
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return (CraftWorld) getWorld();
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}
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public IChunkAccess getHandle(ChunkStatus chunkStatus) {
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IChunkAccess chunkAccess = worldServer.getChunk(x, z, chunkStatus);
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// SPIGOT-7332: Get unwrapped extension
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if (chunkAccess instanceof ProtoChunkExtension extension) {
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return extension.getWrapped();
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}
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return chunkAccess;
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}
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@Override
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public int getX() {
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return x;
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}
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@Override
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public int getZ() {
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return z;
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}
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@Override
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public String toString() {
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return "CraftChunk{" + "x=" + getX() + "z=" + getZ() + '}';
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}
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@Override
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public Block getBlock(int x, int y, int z) {
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validateChunkCoordinates(worldServer.getMinBuildHeight(), worldServer.getMaxBuildHeight(), x, y, z);
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return new CraftBlock(worldServer, new BlockPosition((this.x << 4) | x, y, (this.z << 4) | z));
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}
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@Override
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public boolean isEntitiesLoaded() {
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return getCraftWorld().getHandle().entityManager.areEntitiesLoaded(ChunkCoordIntPair.asLong(x, z));
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}
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@Override
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public Entity[] getEntities() {
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if (!isLoaded()) {
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getWorld().getChunkAt(x, z); // Transient load for this tick
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}
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PersistentEntitySectionManager<net.minecraft.world.entity.Entity> entityManager = getCraftWorld().getHandle().entityManager;
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long pair = ChunkCoordIntPair.asLong(x, z);
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if (entityManager.areEntitiesLoaded(pair)) {
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return entityManager.getEntities(new ChunkCoordIntPair(x, z)).stream()
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.map(net.minecraft.world.entity.Entity::getBukkitEntity)
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.filter(Objects::nonNull).toArray(Entity[]::new);
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}
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entityManager.ensureChunkQueuedForLoad(pair); // Start entity loading
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// SPIGOT-6772: Use entity mailbox and re-schedule entities if they get unloaded
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ThreadedMailbox<Runnable> mailbox = ((EntityStorage) entityManager.permanentStorage).entityDeserializerQueue;
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BooleanSupplier supplier = () -> {
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// only execute inbox if our entities are not present
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if (entityManager.areEntitiesLoaded(pair)) {
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return true;
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}
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if (!entityManager.isPending(pair)) {
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// Our entities got unloaded, this should normally not happen.
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entityManager.ensureChunkQueuedForLoad(pair); // Re-start entity loading
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}
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// tick loading inbox, which loads the created entities to the world
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// (if present)
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entityManager.tick();
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// check if our entities are loaded
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return entityManager.areEntitiesLoaded(pair);
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};
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// now we wait until the entities are loaded,
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// the converting from NBT to entity object is done on the main Thread which is why we wait
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while (!supplier.getAsBoolean()) {
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if (mailbox.size() != 0) {
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mailbox.run();
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} else {
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Thread.yield();
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LockSupport.parkNanos("waiting for entity loading", 100000L);
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}
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}
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return entityManager.getEntities(new ChunkCoordIntPair(x, z)).stream()
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.map(net.minecraft.world.entity.Entity::getBukkitEntity)
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.filter(Objects::nonNull).toArray(Entity[]::new);
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}
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@Override
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public BlockState[] getTileEntities() {
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if (!isLoaded()) {
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getWorld().getChunkAt(x, z); // Transient load for this tick
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}
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int index = 0;
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IChunkAccess chunk = getHandle(ChunkStatus.FULL);
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BlockState[] entities = new BlockState[chunk.blockEntities.size()];
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for (BlockPosition position : chunk.blockEntities.keySet()) {
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entities[index++] = worldServer.getWorld().getBlockAt(position.getX(), position.getY(), position.getZ()).getState();
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}
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return entities;
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}
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@Override
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public boolean isGenerated() {
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IChunkAccess chunk = getHandle(ChunkStatus.EMPTY);
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return chunk.getStatus().isOrAfter(ChunkStatus.FULL);
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}
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@Override
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public boolean isLoaded() {
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return getWorld().isChunkLoaded(this);
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}
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@Override
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public boolean load() {
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return getWorld().loadChunk(getX(), getZ(), true);
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}
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@Override
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public boolean load(boolean generate) {
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return getWorld().loadChunk(getX(), getZ(), generate);
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}
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@Override
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public boolean unload() {
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return getWorld().unloadChunk(getX(), getZ());
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}
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@Override
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public boolean isSlimeChunk() {
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// 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
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return SeededRandom.seedSlimeChunk(getX(), getZ(), getWorld().getSeed(), 987234911L).nextInt(10) == 0;
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}
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@Override
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public boolean unload(boolean save) {
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return getWorld().unloadChunk(getX(), getZ(), save);
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}
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@Override
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public boolean isForceLoaded() {
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return getWorld().isChunkForceLoaded(getX(), getZ());
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}
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@Override
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public void setForceLoaded(boolean forced) {
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getWorld().setChunkForceLoaded(getX(), getZ(), forced);
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}
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@Override
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public boolean addPluginChunkTicket(Plugin plugin) {
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return getWorld().addPluginChunkTicket(getX(), getZ(), plugin);
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}
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@Override
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public boolean removePluginChunkTicket(Plugin plugin) {
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return getWorld().removePluginChunkTicket(getX(), getZ(), plugin);
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}
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@Override
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public Collection<Plugin> getPluginChunkTickets() {
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return getWorld().getPluginChunkTickets(getX(), getZ());
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}
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@Override
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public long getInhabitedTime() {
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return getHandle(ChunkStatus.EMPTY).getInhabitedTime();
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}
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@Override
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public void setInhabitedTime(long ticks) {
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Preconditions.checkArgument(ticks >= 0, "ticks cannot be negative");
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getHandle(ChunkStatus.STRUCTURE_STARTS).setInhabitedTime(ticks);
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}
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@Override
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public boolean contains(BlockData block) {
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Preconditions.checkArgument(block != null, "Block cannot be null");
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Predicate<IBlockData> nms = Predicates.equalTo(((CraftBlockData) block).getState());
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for (ChunkSection section : getHandle(ChunkStatus.FULL).getSections()) {
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if (section != null && section.getStates().maybeHas(nms)) {
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return true;
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}
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}
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return false;
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}
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@Override
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public boolean contains(Biome biome) {
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Preconditions.checkArgument(biome != null, "Biome cannot be null");
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IChunkAccess chunk = getHandle(ChunkStatus.BIOMES);
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Predicate<Holder<BiomeBase>> nms = Predicates.equalTo(CraftBlock.biomeToBiomeBase(chunk.biomeRegistry, biome));
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for (ChunkSection section : chunk.getSections()) {
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if (section != null && section.getBiomes().maybeHas(nms)) {
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return true;
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}
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}
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return false;
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}
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@Override
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public ChunkSnapshot getChunkSnapshot() {
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return getChunkSnapshot(true, false, false);
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}
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@Override
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public ChunkSnapshot getChunkSnapshot(boolean includeMaxBlockY, boolean includeBiome, boolean includeBiomeTempRain) {
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IChunkAccess chunk = getHandle(ChunkStatus.FULL);
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ChunkSection[] cs = chunk.getSections();
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DataPaletteBlock[] sectionBlockIDs = new DataPaletteBlock[cs.length];
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byte[][] sectionSkyLights = new byte[cs.length][];
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byte[][] sectionEmitLights = new byte[cs.length][];
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boolean[] sectionEmpty = new boolean[cs.length];
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PalettedContainerRO<Holder<BiomeBase>>[] biome = (includeBiome || includeBiomeTempRain) ? new DataPaletteBlock[cs.length] : null;
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IRegistry<BiomeBase> iregistry = worldServer.registryAccess().registryOrThrow(Registries.BIOME);
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Codec<PalettedContainerRO<Holder<BiomeBase>>> biomeCodec = DataPaletteBlock.codecRO(iregistry.asHolderIdMap(), iregistry.holderByNameCodec(), DataPaletteBlock.d.SECTION_BIOMES, iregistry.getHolderOrThrow(Biomes.PLAINS));
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for (int i = 0; i < cs.length; i++) {
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NBTTagCompound data = new NBTTagCompound();
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data.put("block_states", ChunkRegionLoader.BLOCK_STATE_CODEC.encodeStart(DynamicOpsNBT.INSTANCE, cs[i].getStates()).get().left().get());
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sectionBlockIDs[i] = ChunkRegionLoader.BLOCK_STATE_CODEC.parse(DynamicOpsNBT.INSTANCE, data.getCompound("block_states")).get().left().get();
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LevelLightEngine lightengine = worldServer.getLightEngine();
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NibbleArray skyLightArray = lightengine.getLayerListener(EnumSkyBlock.SKY).getDataLayerData(SectionPosition.of(x, i, z));
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if (skyLightArray == null) {
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sectionSkyLights[i] = emptyLight;
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} else {
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sectionSkyLights[i] = new byte[2048];
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System.arraycopy(skyLightArray.getData(), 0, sectionSkyLights[i], 0, 2048);
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}
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NibbleArray emitLightArray = lightengine.getLayerListener(EnumSkyBlock.BLOCK).getDataLayerData(SectionPosition.of(x, i, z));
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if (emitLightArray == null) {
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sectionEmitLights[i] = emptyLight;
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} else {
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sectionEmitLights[i] = new byte[2048];
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System.arraycopy(emitLightArray.getData(), 0, sectionEmitLights[i], 0, 2048);
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}
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if (biome != null) {
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data.put("biomes", biomeCodec.encodeStart(DynamicOpsNBT.INSTANCE, cs[i].getBiomes()).get().left().get());
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biome[i] = biomeCodec.parse(DynamicOpsNBT.INSTANCE, data.getCompound("biomes")).get().left().get();
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}
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}
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HeightMap hmap = null;
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if (includeMaxBlockY) {
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hmap = new HeightMap(chunk, HeightMap.Type.MOTION_BLOCKING);
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hmap.setRawData(chunk, HeightMap.Type.MOTION_BLOCKING, chunk.heightmaps.get(HeightMap.Type.MOTION_BLOCKING).getRawData());
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}
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World world = getWorld();
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return new CraftChunkSnapshot(getX(), getZ(), chunk.getMinBuildHeight(), chunk.getMaxBuildHeight(), world.getName(), world.getFullTime(), sectionBlockIDs, sectionSkyLights, sectionEmitLights, sectionEmpty, hmap, iregistry, biome);
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}
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@Override
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public PersistentDataContainer getPersistentDataContainer() {
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return getHandle(ChunkStatus.STRUCTURE_STARTS).persistentDataContainer;
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}
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@Override
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public LoadLevel getLoadLevel() {
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net.minecraft.world.level.chunk.Chunk chunk = worldServer.getChunkIfLoaded(getX(), getZ());
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if (chunk == null) {
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return LoadLevel.UNLOADED;
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}
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return LoadLevel.values()[chunk.getFullStatus().ordinal()];
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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CraftChunk that = (CraftChunk) o;
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if (x != that.x) return false;
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if (z != that.z) return false;
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return worldServer.equals(that.worldServer);
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}
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@Override
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public int hashCode() {
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int result = worldServer.hashCode();
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result = 31 * result + x;
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result = 31 * result + z;
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return result;
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}
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public static ChunkSnapshot getEmptyChunkSnapshot(int x, int z, CraftWorld world, boolean includeBiome, boolean includeBiomeTempRain) {
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IChunkAccess actual = world.getHandle().getChunk(x, z, (includeBiome || includeBiomeTempRain) ? ChunkStatus.BIOMES : ChunkStatus.EMPTY);
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/* Fill with empty data */
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int hSection = actual.getSectionsCount();
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DataPaletteBlock[] blockIDs = new DataPaletteBlock[hSection];
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byte[][] skyLight = new byte[hSection][];
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byte[][] emitLight = new byte[hSection][];
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boolean[] empty = new boolean[hSection];
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IRegistry<BiomeBase> iregistry = world.getHandle().registryAccess().registryOrThrow(Registries.BIOME);
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DataPaletteBlock<Holder<BiomeBase>>[] biome = (includeBiome || includeBiomeTempRain) ? new DataPaletteBlock[hSection] : null;
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Codec<PalettedContainerRO<Holder<BiomeBase>>> biomeCodec = DataPaletteBlock.codecRO(iregistry.asHolderIdMap(), iregistry.holderByNameCodec(), DataPaletteBlock.d.SECTION_BIOMES, iregistry.getHolderOrThrow(Biomes.PLAINS));
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for (int i = 0; i < hSection; i++) {
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blockIDs[i] = emptyBlockIDs;
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skyLight[i] = emptyLight;
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emitLight[i] = emptyLight;
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empty[i] = true;
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if (biome != null) {
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biome[i] = (DataPaletteBlock<Holder<BiomeBase>>) biomeCodec.parse(DynamicOpsNBT.INSTANCE, biomeCodec.encodeStart(DynamicOpsNBT.INSTANCE, actual.getSection(i).getBiomes()).get().left().get()).get().left().get();
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}
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}
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return new CraftChunkSnapshot(x, z, world.getMinHeight(), world.getMaxHeight(), world.getName(), world.getFullTime(), blockIDs, skyLight, emitLight, empty, new HeightMap(actual, HeightMap.Type.MOTION_BLOCKING), iregistry, biome);
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}
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static void validateChunkCoordinates(int minY, int maxY, int x, int y, int z) {
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Preconditions.checkArgument(0 <= x && x <= 15, "x out of range (expected 0-15, got %s)", x);
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Preconditions.checkArgument(minY <= y && y <= maxY, "y out of range (expected %s-%s, got %s)", minY, maxY, y);
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Preconditions.checkArgument(0 <= z && z <= 15, "z out of range (expected 0-15, got %s)", z);
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}
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static {
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Arrays.fill(emptyLight, (byte) 0xFF);
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}
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}
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