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package net.minestom.server.instance;
import it.unimi.dsi.fastutil.ints.Int2ObjectMaps;
import net.kyori.adventure.nbt.CompoundBinaryTag;
import net.minestom.server.MinecraftServer;
import net.minestom.server.coordinate.BlockVec;
import net.minestom.server.coordinate.Point;
import net.minestom.server.coordinate.Vec;
import net.minestom.server.entity.Entity;
import net.minestom.server.entity.Player;
import net.minestom.server.event.EventDispatcher;
import net.minestom.server.event.instance.InstanceChunkLoadEvent;
import net.minestom.server.event.instance.InstanceChunkUnloadEvent;
import net.minestom.server.event.player.PlayerBlockBreakEvent;
import net.minestom.server.instance.anvil.AnvilLoader;
import net.minestom.server.instance.block.Block;
import net.minestom.server.instance.block.BlockFace;
import net.minestom.server.instance.block.BlockHandler;
import net.minestom.server.instance.block.rule.BlockPlacementRule;
import net.minestom.server.instance.generator.Generator;
import net.minestom.server.instance.generator.GeneratorImpl;
import net.minestom.server.instance.palette.Palette;
import net.minestom.server.network.packet.server.play.BlockChangePacket;
import net.minestom.server.network.packet.server.play.BlockEntityDataPacket;
import net.minestom.server.network.packet.server.play.EffectPacket;
import net.minestom.server.network.packet.server.play.UnloadChunkPacket;
import net.minestom.server.registry.DynamicRegistry;
import net.minestom.server.utils.NamespaceID;
import net.minestom.server.utils.PacketUtils;
import net.minestom.server.utils.async.AsyncUtils;
import net.minestom.server.utils.block.BlockUtils;
import net.minestom.server.utils.chunk.ChunkCache;
import net.minestom.server.utils.chunk.ChunkSupplier;
import net.minestom.server.utils.chunk.ChunkUtils;
import net.minestom.server.utils.validate.Check;
import net.minestom.server.world.DimensionType;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import space.vectrix.flare.fastutil.Long2ObjectSyncMap;
import java.util.*;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.Supplier;
import static net.minestom.server.utils.chunk.ChunkUtils.*;
/**
* InstanceContainer is an instance that contains chunks in contrary to SharedInstance.
*/
public class InstanceContainer extends Instance {
private static final Logger LOGGER = LoggerFactory.getLogger(InstanceContainer.class);
private static final AnvilLoader DEFAULT_LOADER = new AnvilLoader("world");
private static final BlockFace[] BLOCK_UPDATE_FACES = new BlockFace[]{
BlockFace.WEST, BlockFace.EAST, BlockFace.NORTH, BlockFace.SOUTH, BlockFace.BOTTOM, BlockFace.TOP
};
// the shared instances assigned to this instance
private final List sharedInstances = new CopyOnWriteArrayList<>();
// the chunk generator used, can be null
private volatile Generator generator;
// (chunk index -> chunk) map, contains all the chunks in the instance
// used as a monitor when access is required
private final Long2ObjectSyncMap chunks = Long2ObjectSyncMap.hashmap();
private final Map> loadingChunks = new ConcurrentHashMap<>();
private final Lock changingBlockLock = new ReentrantLock();
private final Map currentlyChangingBlocks = new HashMap<>();
// the chunk loader, used when trying to load/save a chunk from another source
private IChunkLoader chunkLoader;
// used to automatically enable the chunk loading or not
private boolean autoChunkLoad = true;
// used to supply a new chunk object at a position when requested
private ChunkSupplier chunkSupplier;
// Fields for instance copy
protected InstanceContainer srcInstance; // only present if this instance has been created using a copy
private long lastBlockChangeTime; // Time at which the last block change happened (#setBlock)
public InstanceContainer(@NotNull UUID uniqueId, @NotNull DynamicRegistry.Key dimensionType) {
this(uniqueId, dimensionType, null, dimensionType.namespace());
}
public InstanceContainer(@NotNull UUID uniqueId, @NotNull DynamicRegistry.Key dimensionType, @NotNull NamespaceID dimensionName) {
this(uniqueId, dimensionType, null, dimensionName);
}
public InstanceContainer(@NotNull UUID uniqueId, @NotNull DynamicRegistry.Key dimensionType, @Nullable IChunkLoader loader) {
this(uniqueId, dimensionType, loader, dimensionType.namespace());
}
public InstanceContainer(@NotNull UUID uniqueId, @NotNull DynamicRegistry.Key dimensionType, @Nullable IChunkLoader loader, @NotNull NamespaceID dimensionName) {
this(MinecraftServer.getDimensionTypeRegistry(), uniqueId, dimensionType, loader, dimensionName);
}
public InstanceContainer(
@NotNull DynamicRegistry dimensionTypeRegistry,
@NotNull UUID uniqueId,
@NotNull DynamicRegistry.Key dimensionType,
@Nullable IChunkLoader loader,
@NotNull NamespaceID dimensionName
) {
super(dimensionTypeRegistry, uniqueId, dimensionType, dimensionName);
setChunkSupplier(DynamicChunk::new);
setChunkLoader(Objects.requireNonNullElse(loader, DEFAULT_LOADER));
this.chunkLoader.loadInstance(this);
}
@Override
public void setBlock(int x, int y, int z, @NotNull Block block, boolean doBlockUpdates) {
Chunk chunk = getChunkAt(x, z);
if (chunk == null) {
Check.stateCondition(!hasEnabledAutoChunkLoad(),
"Tried to set a block to an unloaded chunk with auto chunk load disabled");
chunk = loadChunk(getChunkCoordinate(x), getChunkCoordinate(z)).join();
}
if (isLoaded(chunk)) UNSAFE_setBlock(chunk, x, y, z, block, null, null, doBlockUpdates, 0);
}
/**
* Sets a block at the specified position.
*
* Unsafe because the method is not synchronized and it does not verify if the chunk is loaded or not.
*
* @param chunk the {@link Chunk} which should be loaded
* @param x the block X
* @param y the block Y
* @param z the block Z
* @param block the block to place
*/
private synchronized void UNSAFE_setBlock(@NotNull Chunk chunk, int x, int y, int z, @NotNull Block block,
@Nullable BlockHandler.Placement placement, @Nullable BlockHandler.Destroy destroy,
boolean doBlockUpdates, int updateDistance) {
if (chunk.isReadOnly()) return;
final DimensionType dim = getCachedDimensionType();
if (y >= dim.maxY() || y < dim.minY()) {
LOGGER.warn("tried to set a block outside the world bounds, should be within [{}, {}): {}", dim.minY(), dim.maxY(), y);
return;
}
synchronized (chunk) {
// Refresh the last block change time
this.lastBlockChangeTime = System.currentTimeMillis();
final Vec blockPosition = new Vec(x, y, z);
if (isAlreadyChanged(blockPosition, block)) { // do NOT change the block again.
// Avoids StackOverflowExceptions when onDestroy tries to destroy the block itself
// This can happen with nether portals which break the entire frame when a portal block is broken
return;
}
this.currentlyChangingBlocks.put(blockPosition, block);
// Change id based on neighbors
final BlockPlacementRule blockPlacementRule = MinecraftServer.getBlockManager().getBlockPlacementRule(block);
if (placement != null && blockPlacementRule != null && doBlockUpdates) {
BlockPlacementRule.PlacementState rulePlacement;
if (placement instanceof BlockHandler.PlayerPlacement pp) {
rulePlacement = new BlockPlacementRule.PlacementState(
this, block, pp.getBlockFace(), blockPosition,
new Vec(pp.getCursorX(), pp.getCursorY(), pp.getCursorZ()),
pp.getPlayer().getPosition(),
pp.getPlayer().getItemInHand(pp.getHand()),
pp.getPlayer().isSneaking()
);
} else {
rulePlacement = new BlockPlacementRule.PlacementState(
this, block, null, blockPosition,
null, null, null,
false
);
}
block = blockPlacementRule.blockPlace(rulePlacement);
if (block == null) block = Block.AIR;
}
// Set the block
chunk.setBlock(x, y, z, block, placement, destroy);
// Refresh neighbors since a new block has been placed
if (doBlockUpdates) {
executeNeighboursBlockPlacementRule(blockPosition, updateDistance);
}
// Refresh player chunk block
{
chunk.sendPacketToViewers(new BlockChangePacket(blockPosition, block.stateId()));
var registry = block.registry();
if (registry.isBlockEntity()) {
final CompoundBinaryTag data = BlockUtils.extractClientNbt(block);
chunk.sendPacketToViewers(new BlockEntityDataPacket(blockPosition, registry.blockEntityId(), data));
}
}
}
}
@Override
public boolean placeBlock(@NotNull BlockHandler.Placement placement, boolean doBlockUpdates) {
final Point blockPosition = placement.getBlockPosition();
final Chunk chunk = getChunkAt(blockPosition);
if (!isLoaded(chunk)) return false;
UNSAFE_setBlock(chunk, blockPosition.blockX(), blockPosition.blockY(), blockPosition.blockZ(),
placement.getBlock(), placement, null, doBlockUpdates, 0);
return true;
}
@Override
public boolean breakBlock(@NotNull Player player, @NotNull Point blockPosition, @NotNull BlockFace blockFace, boolean doBlockUpdates) {
final Chunk chunk = getChunkAt(blockPosition);
Check.notNull(chunk, "You cannot break blocks in a null chunk!");
if (chunk.isReadOnly()) return false;
if (!isLoaded(chunk)) return false;
final Block block = getBlock(blockPosition);
final int x = blockPosition.blockX();
final int y = blockPosition.blockY();
final int z = blockPosition.blockZ();
if (block.isAir()) {
// The player probably have a wrong version of this chunk section, send it
chunk.sendChunk(player);
return false;
}
PlayerBlockBreakEvent blockBreakEvent = new PlayerBlockBreakEvent(player, block, Block.AIR, new BlockVec(blockPosition), blockFace);
EventDispatcher.call(blockBreakEvent);
final boolean allowed = !blockBreakEvent.isCancelled();
if (allowed) {
// Break or change the broken block based on event result
final Block resultBlock = blockBreakEvent.getResultBlock();
UNSAFE_setBlock(chunk, x, y, z, resultBlock, null,
new BlockHandler.PlayerDestroy(block, this, blockPosition, player), doBlockUpdates, 0);
// Send the block break effect packet
PacketUtils.sendGroupedPacket(chunk.getViewers(),
new EffectPacket(2001 /*Block break + block break sound*/, blockPosition, block.stateId(), false),
// Prevent the block breaker to play the particles and sound two times
(viewer) -> !viewer.equals(player));
}
return allowed;
}
@Override
public @NotNull CompletableFuture loadChunk(int chunkX, int chunkZ) {
return loadOrRetrieve(chunkX, chunkZ, () -> retrieveChunk(chunkX, chunkZ));
}
@Override
public @NotNull CompletableFuture loadOptionalChunk(int chunkX, int chunkZ) {
return loadOrRetrieve(chunkX, chunkZ, () -> hasEnabledAutoChunkLoad() ? retrieveChunk(chunkX, chunkZ) : AsyncUtils.empty());
}
@Override
public synchronized void unloadChunk(@NotNull Chunk chunk) {
if (!isLoaded(chunk)) return;
final int chunkX = chunk.getChunkX();
final int chunkZ = chunk.getChunkZ();
chunk.sendPacketToViewers(new UnloadChunkPacket(chunkX, chunkZ));
EventDispatcher.call(new InstanceChunkUnloadEvent(this, chunk));
// Remove all entities in chunk
getEntityTracker().chunkEntities(chunkX, chunkZ, EntityTracker.Target.ENTITIES).forEach(Entity::remove);
// Clear cache
this.chunks.remove(getChunkIndex(chunkX, chunkZ));
chunk.unload();
chunkLoader.unloadChunk(chunk);
var dispatcher = MinecraftServer.process().dispatcher();
dispatcher.deletePartition(chunk);
}
@Override
public Chunk getChunk(int chunkX, int chunkZ) {
return chunks.get(getChunkIndex(chunkX, chunkZ));
}
@Override
public @NotNull CompletableFuture saveInstance() {
return chunkLoader.saveInstance(this);
}
@Override
public @NotNull CompletableFuture saveChunkToStorage(@NotNull Chunk chunk) {
return chunkLoader.saveChunk(chunk);
}
@Override
public @NotNull CompletableFuture saveChunksToStorage() {
return chunkLoader.saveChunks(getChunks());
}
protected @NotNull CompletableFuture<@NotNull Chunk> retrieveChunk(int chunkX, int chunkZ) {
CompletableFuture completableFuture = new CompletableFuture<>();
final long index = getChunkIndex(chunkX, chunkZ);
final CompletableFuture prev = loadingChunks.putIfAbsent(index, completableFuture);
if (prev != null) return prev;
final IChunkLoader loader = chunkLoader;
final Runnable retriever = () -> loader.loadChunk(this, chunkX, chunkZ)
.thenCompose(chunk -> {
if (chunk != null) {
// Chunk has been loaded from storage
return CompletableFuture.completedFuture(chunk);
} else {
// Loader couldn't load the chunk, generate it
return createChunk(chunkX, chunkZ).whenComplete((c, a) -> c.onGenerate());
}
})
// cache the retrieved chunk
.thenAccept(chunk -> {
// TODO run in the instance thread?
cacheChunk(chunk);
chunk.onLoad();
EventDispatcher.call(new InstanceChunkLoadEvent(this, chunk));
final CompletableFuture future = this.loadingChunks.remove(index);
assert future == completableFuture : "Invalid future: " + future;
completableFuture.complete(chunk);
})
.exceptionally(throwable -> {
MinecraftServer.getExceptionManager().handleException(throwable);
return null;
});
if (loader.supportsParallelLoading()) {
CompletableFuture.runAsync(retriever);
} else {
retriever.run();
}
return completableFuture;
}
Map> generationForks = new ConcurrentHashMap<>();
protected @NotNull CompletableFuture<@NotNull Chunk> createChunk(int chunkX, int chunkZ) {
final Chunk chunk = chunkSupplier.createChunk(this, chunkX, chunkZ);
Check.notNull(chunk, "Chunks supplied by a ChunkSupplier cannot be null.");
Generator generator = generator();
if (generator != null && chunk.shouldGenerate()) {
CompletableFuture resultFuture = new CompletableFuture<>();
// TODO: virtual thread once Loom is available
ForkJoinPool.commonPool().submit(() -> {
GeneratorImpl.GenSection[] genSections = new GeneratorImpl.GenSection[chunk.getSections().size()];
Arrays.setAll(genSections, i -> {
Section section = chunk.getSections().get(i);
return new GeneratorImpl.GenSection(section.blockPalette(), section.biomePalette());
});
var chunkUnit = GeneratorImpl.chunk(MinecraftServer.getBiomeRegistry(), genSections,
chunk.getChunkX(), chunk.minSection, chunk.getChunkZ());
try {
// Generate block/biome palette
generator.generate(chunkUnit);
// Apply nbt/handler
if (chunkUnit.modifier() instanceof GeneratorImpl.AreaModifierImpl chunkModifier) {
for (var section : chunkModifier.sections()) {
if (section.modifier() instanceof GeneratorImpl.SectionModifierImpl sectionModifier) {
applyGenerationData(chunk, sectionModifier);
}
}
}
// Register forks or apply locally
for (var fork : chunkUnit.forks()) {
var sections = ((GeneratorImpl.AreaModifierImpl) fork.modifier()).sections();
for (var section : sections) {
if (section.modifier() instanceof GeneratorImpl.SectionModifierImpl sectionModifier) {
if (sectionModifier.genSection().blocks().count() == 0)
continue;
final Point start = section.absoluteStart();
final Chunk forkChunk = start.chunkX() == chunkX && start.chunkZ() == chunkZ ? chunk : getChunkAt(start);
if (forkChunk != null) {
applyFork(forkChunk, sectionModifier);
// Update players
forkChunk.invalidate();
forkChunk.sendChunk();
} else {
final long index = getChunkIndex(start);
this.generationForks.compute(index, (i, sectionModifiers) -> {
if (sectionModifiers == null) sectionModifiers = new ArrayList<>();
sectionModifiers.add(sectionModifier);
return sectionModifiers;
});
}
}
}
}
// Apply awaiting forks
processFork(chunk);
} catch (Throwable e) {
MinecraftServer.getExceptionManager().handleException(e);
} finally {
// End generation
refreshLastBlockChangeTime();
resultFuture.complete(chunk);
}
});
return resultFuture;
} else {
// No chunk generator, execute the callback with the empty chunk
processFork(chunk);
return CompletableFuture.completedFuture(chunk);
}
}
private void processFork(Chunk chunk) {
this.generationForks.compute(ChunkUtils.getChunkIndex(chunk), (aLong, sectionModifiers) -> {
if (sectionModifiers != null) {
for (var sectionModifier : sectionModifiers) {
applyFork(chunk, sectionModifier);
}
}
return null;
});
}
private void applyFork(Chunk chunk, GeneratorImpl.SectionModifierImpl sectionModifier) {
synchronized (chunk) {
Section section = chunk.getSectionAt(sectionModifier.start().blockY());
Palette currentBlocks = section.blockPalette();
// -1 is necessary because forked units handle explicit changes by changing AIR 0 to 1
sectionModifier.genSection().blocks().getAllPresent((x, y, z, value) -> currentBlocks.set(x, y, z, value - 1));
applyGenerationData(chunk, sectionModifier);
}
}
private void applyGenerationData(Chunk chunk, GeneratorImpl.SectionModifierImpl section) {
var cache = section.genSection().specials();
if (cache.isEmpty()) return;
final int height = section.start().blockY();
synchronized (chunk) {
Int2ObjectMaps.fastForEach(cache, blockEntry -> {
final int index = blockEntry.getIntKey();
final Block block = blockEntry.getValue();
final int x = ChunkUtils.blockIndexToChunkPositionX(index);
final int y = ChunkUtils.blockIndexToChunkPositionY(index) + height;
final int z = ChunkUtils.blockIndexToChunkPositionZ(index);
chunk.setBlock(x, y, z, block);
});
}
}
@Override
public void enableAutoChunkLoad(boolean enable) {
this.autoChunkLoad = enable;
}
@Override
public boolean hasEnabledAutoChunkLoad() {
return autoChunkLoad;
}
@Override
public boolean isInVoid(@NotNull Point point) {
// TODO: more customizable
return point.y() < getCachedDimensionType().minY() - 64;
}
/**
* Changes which type of {@link Chunk} implementation to use once one needs to be loaded.
*
* Uses {@link DynamicChunk} by default.
*
* WARNING: if you need to save this instance's chunks later,
* the code needs to be predictable for {@link IChunkLoader#loadChunk(Instance, int, int)}
* to create the correct type of {@link Chunk}. tl;dr: Need chunk save = no random type.
*
* @param chunkSupplier the new {@link ChunkSupplier} of this instance, chunks need to be non-null
* @throws NullPointerException if {@code chunkSupplier} is null
*/
@Override
public void setChunkSupplier(@NotNull ChunkSupplier chunkSupplier) {
this.chunkSupplier = chunkSupplier;
}
/**
* Gets the current {@link ChunkSupplier}.
*
* You shouldn't use it to generate a new chunk, but as a way to view which one is currently in use.
*
* @return the current {@link ChunkSupplier}
*/
public ChunkSupplier getChunkSupplier() {
return chunkSupplier;
}
/**
* Gets all the {@link SharedInstance} linked to this container.
*
* @return an unmodifiable {@link List} containing all the {@link SharedInstance} linked to this container
*/
public List getSharedInstances() {
return Collections.unmodifiableList(sharedInstances);
}
/**
* Gets if this instance has {@link SharedInstance} linked to it.
*
* @return true if {@link #getSharedInstances()} is not empty
*/
public boolean hasSharedInstances() {
return !sharedInstances.isEmpty();
}
/**
* Assigns a {@link SharedInstance} to this container.
*
* Only used by {@link InstanceManager}, mostly unsafe.
*
* @param sharedInstance the shared instance to assign to this container
*/
protected void addSharedInstance(SharedInstance sharedInstance) {
this.sharedInstances.add(sharedInstance);
}
/**
* Copies all the chunks of this instance and create a new instance container with all of them.
*
* Chunks are copied with {@link Chunk#copy(Instance, int, int)},
* {@link UUID} is randomized and {@link DimensionType} is passed over.
*
* @return an {@link InstanceContainer} with the exact same chunks as 'this'
* @see #getSrcInstance() to retrieve the "creation source" of the copied instance
*/
public synchronized InstanceContainer copy() {
InstanceContainer copiedInstance = new InstanceContainer(UUID.randomUUID(), getDimensionType());
copiedInstance.srcInstance = this;
copiedInstance.tagHandler = this.tagHandler.copy();
copiedInstance.lastBlockChangeTime = this.lastBlockChangeTime;
for (Chunk chunk : chunks.values()) {
final int chunkX = chunk.getChunkX();
final int chunkZ = chunk.getChunkZ();
final Chunk copiedChunk = chunk.copy(copiedInstance, chunkX, chunkZ);
copiedInstance.cacheChunk(copiedChunk);
}
return copiedInstance;
}
/**
* Gets the instance from which this one has been copied.
*
* Only present if this instance has been created with {@link InstanceContainer#copy()}.
*
* @return the instance source, null if not created by a copy
* @see #copy() to create a copy of this instance with 'this' as the source
*/
public @Nullable InstanceContainer getSrcInstance() {
return srcInstance;
}
/**
* Gets the last time at which a block changed.
*
* @return the time at which the last block changed in milliseconds, 0 if never
*/
public long getLastBlockChangeTime() {
return lastBlockChangeTime;
}
/**
* Signals the instance that a block changed.
*
* Useful if you change blocks values directly using a {@link Chunk} object.
*/
public void refreshLastBlockChangeTime() {
this.lastBlockChangeTime = System.currentTimeMillis();
}
@Override
public @Nullable Generator generator() {
return generator;
}
@Override
public void setGenerator(@Nullable Generator generator) {
this.generator = generator;
}
/**
* Gets all the instance chunks.
*
* @return the chunks of this instance
*/
@Override
public @NotNull Collection<@NotNull Chunk> getChunks() {
return chunks.values();
}
/**
* Gets the {@link IChunkLoader} of this instance.
*
* @return the {@link IChunkLoader} of this instance
*/
public @NotNull IChunkLoader getChunkLoader() {
return chunkLoader;
}
/**
* Changes the {@link IChunkLoader} of this instance (to change how chunks are retrieved when not already loaded).
*
*
{@link IChunkLoader#noop()} can be used to do nothing.
*
* @param chunkLoader the new {@link IChunkLoader}
*/
public void setChunkLoader(@NotNull IChunkLoader chunkLoader) {
this.chunkLoader = Objects.requireNonNull(chunkLoader, "Chunk loader cannot be null");
}
@Override
public void tick(long time) {
// Time/world border
super.tick(time);
// Clear block change map
Lock wrlock = this.changingBlockLock;
wrlock.lock();
this.currentlyChangingBlocks.clear();
wrlock.unlock();
}
/**
* Has this block already changed since last update?
* Prevents StackOverflow with blocks trying to modify their position in onDestroy or onPlace.
*
* @param blockPosition the block position
* @param block the block
* @return true if the block changed since the last update
*/
private boolean isAlreadyChanged(@NotNull Point blockPosition, @NotNull Block block) {
final Block changedBlock = currentlyChangingBlocks.get(blockPosition);
return Objects.equals(changedBlock, block);
}
/**
* Executed when a block is modified, this is used to modify the states of neighbours blocks.
*
* For example, this can be used for redstone wires which need an understanding of its neighborhoods to take the right shape.
*
* @param blockPosition the position of the modified block
*/
private void executeNeighboursBlockPlacementRule(@NotNull Point blockPosition, int updateDistance) {
ChunkCache cache = new ChunkCache(this, null, null);
for (var updateFace : BLOCK_UPDATE_FACES) {
var direction = updateFace.toDirection();
final int neighborX = blockPosition.blockX() + direction.normalX();
final int neighborY = blockPosition.blockY() + direction.normalY();
final int neighborZ = blockPosition.blockZ() + direction.normalZ();
if (neighborY < getCachedDimensionType().minY() || neighborY > getCachedDimensionType().height())
continue;
final Block neighborBlock = cache.getBlock(neighborX, neighborY, neighborZ, Condition.NONE);
if (neighborBlock == null || neighborBlock.isAir())
continue;
final BlockPlacementRule neighborBlockPlacementRule = MinecraftServer.getBlockManager().getBlockPlacementRule(neighborBlock);
if (neighborBlockPlacementRule == null || updateDistance >= neighborBlockPlacementRule.maxUpdateDistance()) continue;
final Vec neighborPosition = new Vec(neighborX, neighborY, neighborZ);
final Block newNeighborBlock = neighborBlockPlacementRule.blockUpdate(new BlockPlacementRule.UpdateState(
this,
neighborPosition,
neighborBlock,
updateFace.getOppositeFace()
));
if (neighborBlock != newNeighborBlock) {
final Chunk chunk = getChunkAt(neighborPosition);
if (!isLoaded(chunk)) continue;
UNSAFE_setBlock(chunk, neighborPosition.blockX(), neighborPosition.blockY(), neighborPosition.blockZ(), newNeighborBlock,
null, null, true, updateDistance + 1);
}
}
}
private CompletableFuture loadOrRetrieve(int chunkX, int chunkZ, Supplier> supplier) {
final Chunk chunk = getChunk(chunkX, chunkZ);
if (chunk != null) {
// Chunk already loaded
return CompletableFuture.completedFuture(chunk);
}
return supplier.get();
}
private void cacheChunk(@NotNull Chunk chunk) {
this.chunks.put(getChunkIndex(chunk), chunk);
var dispatcher = MinecraftServer.process().dispatcher();
dispatcher.createPartition(chunk);
}
}