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Code Issues Projects Releases Wiki Activity

Dirty tracking (#547)

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This commit is contained in:
TheMode 2021-12-23 23:44:22 +01:00
parent 639254b19e
commit 2c7aae6bec
6 changed files with 69 additions and 81 deletions
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24
src/main/java/net/minestom/server/entity/Entity.java
View File

@ -132,16 +132,28 @@ public class Entity implements Viewable, Tickable, Schedulable, TagHandler, Perm
protected final ViewEngine viewEngine = new ViewEngine(this,
player -> {
// Add viewable
if (!Entity.this.viewEngine.viewableOption.predicate(player) ||
!player.viewEngine.viewerOption.predicate(this)) return;
Entity.this.viewEngine.viewableOption.register(player);
player.viewEngine.viewerOption.register(this);
var lock1 = player.getEntityId() < getEntityId() ? player : this;
var lock2 = lock1 == this ? player : this;
synchronized (lock1.viewEngine.mutex()) {
synchronized (lock2.viewEngine.mutex()) {
if (!Entity.this.viewEngine.viewableOption.predicate(player) ||
!player.viewEngine.viewerOption.predicate(this)) return;
Entity.this.viewEngine.viewableOption.register(player);
player.viewEngine.viewerOption.register(this);
}
}
updateNewViewer(player);
},
player -> {
// Remove viewable
Entity.this.viewEngine.viewableOption.unregister(player);
player.viewEngine.viewerOption.unregister(this);
var lock1 = player.getEntityId() < getEntityId() ? player : this;
var lock2 = lock1 == this ? player : this;
synchronized (lock1.viewEngine.mutex()) {
synchronized (lock2.viewEngine.mutex()) {
Entity.this.viewEngine.viewableOption.unregister(player);
player.viewEngine.viewerOption.unregister(this);
}
}
updateOldViewer(player);
},
this instanceof Player player ? entity -> entity.viewEngine.viewableOption.addition.accept(player) : null,

25
src/main/java/net/minestom/server/instance/EntityTracker.java
View File

@ -5,7 +5,10 @@ import net.minestom.server.entity.Entity;
import net.minestom.server.entity.ExperienceOrb;
import net.minestom.server.entity.ItemEntity;
import net.minestom.server.entity.Player;
import org.jetbrains.annotations.*;
import org.jetbrains.annotations.ApiStatus;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.UnmodifiableView;
import java.util.Collection;
import java.util.List;
@ -52,25 +55,14 @@ public sealed interface EntityTracker permits EntityTrackerImpl {
difference(from.chunkX(), from.chunkZ(), to.chunkX(), to.chunkZ(), target, update);
}
/**
* Gets the entities present in the specified chunk.
*/
<T extends Entity> void chunkEntities(int chunkX, int chunkZ,
@NotNull Target<T> target, @NotNull Query<T> query);
default <T extends Entity> void chunkEntities(@NotNull Point point,
@NotNull Target<T> target, @NotNull Query<T> query) {
chunkEntities(point.chunkX(), point.chunkZ(), target, query);
}
/**
* Returns a copy of the entities present in the specified chunk.
*/
@ApiStatus.Experimental
@Unmodifiable <T extends Entity> Collection<T> chunkEntities(int chunkX, int chunkZ, @NotNull Target<T> target);
@UnmodifiableView <T extends Entity> Collection<T> chunkEntities(int chunkX, int chunkZ, @NotNull Target<T> target);
@ApiStatus.Experimental
@Unmodifiable
@UnmodifiableView
default <T extends Entity> @NotNull Collection<T> chunkEntities(@NotNull Point point, @NotNull Target<T> target) {
return chunkEntities(point.chunkX(), point.chunkZ(), target);
}
@ -114,11 +106,6 @@ public sealed interface EntityTracker permits EntityTrackerImpl {
return entities(Target.ENTITIES);
}
/**
* Run {@code runnable} and ensure that the tracking state is locked during execution.
*/
void synchronize(@NotNull Point point, @NotNull Runnable runnable);
/**
* Represents the type of entity you want to retrieve.
*

67
src/main/java/net/minestom/server/instance/EntityTrackerImpl.java
View File

@ -1,9 +1,5 @@
package net.minestom.server.instance;
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import net.minestom.server.MinecraftServer;
import net.minestom.server.coordinate.Point;
import net.minestom.server.entity.Entity;
@ -12,6 +8,8 @@ import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.Unmodifiable;
import org.jetbrains.annotations.UnmodifiableView;
import space.vectrix.flare.fastutil.Int2ObjectSyncMap;
import space.vectrix.flare.fastutil.Long2ObjectSyncMap;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
@ -31,11 +29,11 @@ final class EntityTrackerImpl implements EntityTracker {
// The array index is the Target enum ordinal
private final TargetEntry<Entity>[] entries = EntityTracker.Target.TARGETS.stream().map((Function<Target<?>, TargetEntry>) TargetEntry::new).toArray(TargetEntry[]::new);
private final Int2ObjectMap<Point> entityPositions = new Int2ObjectOpenHashMap<>();
private final Int2ObjectSyncMap<Point> entityPositions = Int2ObjectSyncMap.hashmap();
@Override
public synchronized <T extends Entity> void register(@NotNull Entity entity, @NotNull Point point,
@NotNull Target<T> target, @Nullable Update<T> update) {
public <T extends Entity> void register(@NotNull Entity entity, @NotNull Point point,
@NotNull Target<T> target, @Nullable Update<T> update) {
var prevPoint = entityPositions.putIfAbsent(entity.getEntityId(), point);
if (prevPoint != null) return;
final long index = getChunkIndex(point);
@ -54,8 +52,8 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized <T extends Entity> void unregister(@NotNull Entity entity,
@NotNull Target<T> target, @Nullable Update<T> update) {
public <T extends Entity> void unregister(@NotNull Entity entity,
@NotNull Target<T> target, @Nullable Update<T> update) {
final Point point = entityPositions.remove(entity.getEntityId());
if (point == null) return;
final long index = getChunkIndex(point);
@ -71,8 +69,8 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized <T extends Entity> void move(@NotNull Entity entity, @NotNull Point newPoint,
@NotNull Target<T> target, @Nullable Update<T> update) {
public <T extends Entity> void move(@NotNull Entity entity, @NotNull Point newPoint,
@NotNull Target<T> target, @Nullable Update<T> update) {
Point oldPoint = entityPositions.put(entity.getEntityId(), newPoint);
if (oldPoint == null || oldPoint.sameChunk(newPoint)) return;
final long oldIndex = getChunkIndex(oldPoint);
@ -99,9 +97,9 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized <T extends Entity> void difference(int oldChunkX, int oldChunkZ,
int newChunkX, int newChunkZ,
@NotNull Target<T> target, @NotNull Update<T> update) {
public <T extends Entity> void difference(int oldChunkX, int oldChunkZ,
int newChunkX, int newChunkZ,
@NotNull Target<T> target, @NotNull Update<T> update) {
final TargetEntry<Entity> entry = entries[target.ordinal()];
forDifferingChunksInRange(newChunkX, newChunkZ, oldChunkX, oldChunkZ,
MinecraftServer.getEntityViewDistance(), (chunkX, chunkZ) -> {
@ -118,18 +116,10 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized <T extends Entity> void chunkEntities(int chunkX, int chunkZ, @NotNull Target<T> target, @NotNull Query<T> query) {
public @Unmodifiable <T extends Entity> Collection<T> chunkEntities(int chunkX, int chunkZ, @NotNull Target<T> target) {
final TargetEntry<Entity> entry = entries[target.ordinal()];
final List<Entity> entities = entry.chunkEntities.get(getChunkIndex(chunkX, chunkZ));
if (entities == null || entities.isEmpty()) return;
for (Entity entity : entities) query.consume((T) entity);
}
@Override
public synchronized @Unmodifiable <T extends Entity> Collection<T> chunkEntities(int chunkX, int chunkZ, @NotNull Target<T> target) {
final TargetEntry<Entity> entry = entries[target.ordinal()];
final List<Entity> entities = entry.chunkEntities.get(getChunkIndex(chunkX, chunkZ));
return entities != null ? (Collection<T>) List.copyOf(entities) : List.of();
//noinspection unchecked
return (Collection<T>) entry.chunkEntities.computeIfAbsent(getChunkIndex(chunkX, chunkZ), i -> LIST_SUPPLIER.get());
}
@Override
@ -141,7 +131,7 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized @NotNull <T extends Entity> List<List<T>> references(int chunkX, int chunkZ, @NotNull Target<T> target) {
public @NotNull <T extends Entity> List<List<T>> references(int chunkX, int chunkZ, @NotNull Target<T> target) {
// Gets reference to all chunk entities lists within the range
// This is used to avoid a map lookup per chunk
final TargetEntry<T> entry = (TargetEntry<T>) entries[target.ordinal()];
@ -156,15 +146,17 @@ final class EntityTrackerImpl implements EntityTracker {
}
@Override
public synchronized <T extends Entity> void nearbyEntities(@NotNull Point point, double range, @NotNull Target<T> target, @NotNull Query<T> query) {
public <T extends Entity> void nearbyEntities(@NotNull Point point, double range, @NotNull Target<T> target, @NotNull Query<T> query) {
final int chunkRange = Math.abs((int) (range / Chunk.CHUNK_SECTION_SIZE)) + 1;
final double squaredRange = range * range;
ChunkUtils.forChunksInRange(point, chunkRange, (chunkX, chunkZ) ->
chunkEntities(chunkX, chunkZ, target, entity -> {
if (point.distanceSquared(entity.getPosition()) < squaredRange) {
query.consume(entity);
}
}));
ChunkUtils.forChunksInRange(point, chunkRange, (chunkX, chunkZ) -> {
var chunkEntities = chunkEntities(chunkX, chunkZ, target);
chunkEntities.forEach(entity -> {
if (point.distanceSquared(entity.getPosition()) < squaredRange) {
query.consume(entity);
}
});
});
}
@Override
@ -173,19 +165,14 @@ final class EntityTrackerImpl implements EntityTracker {
return (Set<T>) entries[target.ordinal()].entitiesView;
}
@Override
public synchronized void synchronize(@NotNull Point point, @NotNull Runnable runnable) {
runnable.run();
}
private static final class TargetEntry<T extends Entity> {
private final EntityTracker.Target<T> target;
private final Set<T> entities = ConcurrentHashMap.newKeySet(); // Thread-safe since exposed
private final Set<T> entitiesView = Collections.unmodifiableSet(entities);
// Chunk index -> entities inside it
private final Long2ObjectMap<List<T>> chunkEntities = new Long2ObjectOpenHashMap<>(0);
private final Long2ObjectSyncMap<List<T>> chunkEntities = Long2ObjectSyncMap.hashmap();
// Chunk index -> lists of visible entities (references to chunkEntities entries)
private final Long2ObjectMap<List<List<T>>> chunkRangeEntities = new Long2ObjectOpenHashMap<>(0);
private final Long2ObjectSyncMap<List<List<T>>> chunkRangeEntities = Long2ObjectSyncMap.hashmap();
TargetEntry(Target<T> target) {
this.target = target;

6
src/main/java/net/minestom/server/instance/Instance.java
View File

@ -1,5 +1,6 @@
package net.minestom.server.instance;
import it.unimi.dsi.fastutil.objects.ObjectArraySet;
import net.kyori.adventure.identity.Identity;
import net.kyori.adventure.pointer.Pointers;
import net.minestom.server.MinecraftServer;
@ -486,9 +487,8 @@ public abstract class Instance implements Block.Getter, Block.Setter, Tickable,
* if {@code chunk} is unloaded, return an empty {@link HashSet}
*/
public @NotNull Set<@NotNull Entity> getChunkEntities(Chunk chunk) {
Set<Entity> result = new HashSet<>();
this.entityTracker.chunkEntities(chunk.toPosition(), EntityTracker.Target.ENTITIES, result::add);
return result;
var chunkEntities = entityTracker.chunkEntities(chunk.toPosition(), EntityTracker.Target.ENTITIES);
return ObjectArraySet.ofUnchecked(chunkEntities.toArray(Entity[]::new));
}
/**

2
src/main/java/net/minestom/server/instance/InstanceContainer.java
View File

@ -219,7 +219,7 @@ public class InstanceContainer extends Instance {
EventDispatcher.call(new InstanceChunkUnloadEvent(this, chunk));
// Remove all entities in chunk
getEntityTracker().chunkEntities(chunkX, chunkZ, EntityTracker.Target.ENTITIES, Entity::remove);
getEntityTracker().chunkEntities(chunkX, chunkZ, EntityTracker.Target.ENTITIES).forEach(Entity::remove);
// Clear cache
this.chunks.remove(index);
chunk.unload();

26
src/main/java/net/minestom/server/utils/ViewEngine.java
View File

@ -2,7 +2,6 @@ package net.minestom.server.utils;
import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
import it.unimi.dsi.fastutil.ints.IntSet;
import it.unimi.dsi.fastutil.objects.ObjectArraySet;
import net.minestom.server.coordinate.Point;
import net.minestom.server.entity.Entity;
import net.minestom.server.entity.Player;
@ -12,6 +11,7 @@ import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
import java.util.function.Consumer;
@ -23,7 +23,7 @@ import java.util.function.Predicate;
@ApiStatus.Internal
public final class ViewEngine {
private final Entity entity;
private final ObjectArraySet<Player> manualViewers = new ObjectArraySet<>();
private final Set<Player> manualViewers = ConcurrentHashMap.newKeySet();
private EntityTracker tracker;
private Point lastTrackingPoint;
@ -112,6 +112,10 @@ public final class ViewEngine {
return entity == null || viewableOption.isRegistered(player);
}
public Object mutex() {
return mutex;
}
public Set<Player> asSet() {
return set;
}
@ -192,17 +196,15 @@ public final class ViewEngine {
Predicate<T> visibilityPredicate,
Consumer<T> action) {
if (tracker == null || references == null) return;
tracker.synchronize(lastTrackingPoint, () -> {
for (List<T> entities : references) {
if (entities.isEmpty()) continue;
for (T entity : entities) {
if (entity == ViewEngine.this.entity || !visibilityPredicate.test(entity)) continue;
if (entity instanceof Player player && manualViewers.contains(player)) continue;
if (entity.getVehicle() != null) continue;
action.accept(entity);
}
for (List<T> entities : references) {
if (entities.isEmpty()) continue;
for (T entity : entities) {
if (entity == ViewEngine.this.entity || !visibilityPredicate.test(entity)) continue;
if (entity instanceof Player player && manualViewers.contains(player)) continue;
if (entity.getVehicle() != null) continue;
action.accept(entity);
}
});
}
}
}