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Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: b999860d SPIGOT-2304: Add LootGenerateEvent CraftBukkit Changes:77fd87e4
SPIGOT-2304: Implement LootGenerateEventa1a705ee
SPIGOT-5566: Doused campfires & fires should call EntityChangeBlockEvent41712edd
SPIGOT-5707: PersistentDataHolder not Persistent on API dropped Item
220 lines
11 KiB
Diff
220 lines
11 KiB
Diff
From f3fde9e5f48bd872498c06b3df0d7d5575c7ea51 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Wed, 15 Apr 2020 18:08:53 -0700
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Subject: [PATCH] Optimise entity hard collision checking
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Very few entities actually hard collide, so store them in their own
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entity slices and provide a special getEntites type call just for them.
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This reduces entity collision checking impact (in my testing) by 25%
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for crammed entities (shove 130 cows into an 8x6 area in one chunk).
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Less crammed entities are likely to show significantly less benefit.
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Effectively, this patch optimises crammed entity situations.
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index d802acef71..09137d8785 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -90,6 +90,54 @@ public class Chunk implements IChunkAccess {
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private final int[] inventoryEntityCounts = new int[16];
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// Paper end
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+ // Paper start - optimise hard collision handling
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+ final com.destroystokyo.paper.util.maplist.EntityList[] hardCollidingEntities = new com.destroystokyo.paper.util.maplist.EntityList[16];
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+
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+ {
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+ for (int i = 0, len = this.hardCollidingEntities.length; i < len; ++i) {
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+ this.hardCollidingEntities[i] = new com.destroystokyo.paper.util.maplist.EntityList();
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+ }
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+ }
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+
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+ public final void getHardCollidingEntities(@Nullable Entity entity, AxisAlignedBB axisalignedbb, List<Entity> into) {
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+ // copied from getEntities
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+ int min = MathHelper.floor((axisalignedbb.minY - 2.0D) / 16.0D);
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+ int max = MathHelper.floor((axisalignedbb.maxY + 2.0D) / 16.0D);
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+
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+ min = MathHelper.clamp(min, 0, this.hardCollidingEntities.length - 1);
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+ max = MathHelper.clamp(max, 0, this.hardCollidingEntities.length - 1);
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+
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+ for (int k = min; k <= max; ++k) {
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+ com.destroystokyo.paper.util.maplist.EntityList entityList = this.hardCollidingEntities[k];
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+ Entity[] entities = entityList.getRawData();
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+
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+ for (int i = 0, len = entityList.size(); i < len; ++i) {
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+ Entity entity1 = entities[i];
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+ if (entity1.shouldBeRemoved) continue; // Paper
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+
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+ if (entity1 != entity && entity1.getBoundingBox().intersects(axisalignedbb)) {
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+ into.add(entity1);
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+
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+ if (!(entity1 instanceof EntityEnderDragon)) {
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+ continue;
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+ }
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+
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+ EntityComplexPart[] aentitycomplexpart = ((EntityEnderDragon) entity1).getComplexParts();
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+ int l = aentitycomplexpart.length;
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+
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+ for (int i1 = 0; i1 < l; ++i1) {
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+ EntityComplexPart entitycomplexpart = aentitycomplexpart[i1];
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+
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+ if (entitycomplexpart != entity && entitycomplexpart.getBoundingBox().intersects(axisalignedbb)) {
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+ into.add(entitycomplexpart);
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+ }
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+ }
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+ }
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+ }
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+ }
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+ }
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+ // Paper end - optimise hard collision handling
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+
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public Chunk(World world, ChunkCoordIntPair chunkcoordintpair, BiomeStorage biomestorage, ChunkConverter chunkconverter, TickList<Block> ticklist, TickList<FluidType> ticklist1, long i, @Nullable ChunkSection[] achunksection, @Nullable Consumer<Chunk> consumer) {
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this.sections = new ChunkSection[16];
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this.e = Maps.newHashMap();
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@@ -525,7 +573,7 @@ public class Chunk implements IChunkAccess {
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entity.chunkY = k;
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entity.chunkZ = this.loc.z;
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this.entities.add(entity); // Paper - per chunk entity list
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- this.entitySlices[k].add(entity);
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+ this.entitySlices[k].add(entity); if (entity.hardCollides()) this.hardCollidingEntities[k].add(entity); // Paper - optimise hard colliding entities
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// Paper start
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if (entity instanceof EntityItem) {
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itemCounts[k]++;
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@@ -562,7 +610,7 @@ public class Chunk implements IChunkAccess {
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entity.entitySlice = null;
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entity.inChunk = false;
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}
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- if (!this.entitySlices[i].remove(entity)) {
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+ if (entity.hardCollides()) this.hardCollidingEntities[i].remove(entity); if (!this.entitySlices[i].remove(entity)) { // Paper - optimise hard colliding entities
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return;
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}
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if (entity instanceof EntityItem) {
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index 0dbe2dce11..324fd07bce 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -210,6 +210,40 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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// CraftBukkit end
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+ // Paper start
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+ /**
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+ * Overriding this field will cause memory leaks.
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+ */
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+ private final boolean hardCollides;
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+
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+ private static final java.util.Map<Class<? extends Entity>, Boolean> cachedOverrides = java.util.Collections.synchronizedMap(new java.util.WeakHashMap<>());
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+ {
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+ Boolean hardCollides = cachedOverrides.get(this.getClass());
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+ if (hardCollides == null) {
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+ try {
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+ Object getHardCollisionBoxMethod = Entity.class.getMethod("au");
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+ Object getHardCollisionBoxEntityMethod = Entity.class.getMethod("j", Entity.class);
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+ if (!this.getClass().getMethod("au").equals(getHardCollisionBoxMethod)) {
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+ hardCollides = Boolean.TRUE;
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+ } else if (!this.getClass().getMethod("j", Entity.class).equals(getHardCollisionBoxEntityMethod)) {
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+ hardCollides = Boolean.TRUE;
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+ } else {
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+ hardCollides = Boolean.FALSE;
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+ }
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+ cachedOverrides.put(this.getClass(), hardCollides);
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+ } catch (Throwable thr) {
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+ // shouldn't happen, just explode
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+ throw new RuntimeException(thr);
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+ }
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+ }
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+ this.hardCollides = hardCollides.booleanValue();
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+ }
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+
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+ public final boolean hardCollides() {
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+ return this.hardCollides;
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+ }
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+ // Paper end
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+
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public Entity(EntityTypes<?> entitytypes, World world) {
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this.id = Entity.entityCount.incrementAndGet();
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this.passengers = Lists.newArrayList();
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diff --git a/src/main/java/net/minecraft/server/EntityEnderDragon.java b/src/main/java/net/minecraft/server/EntityEnderDragon.java
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index af10fc36e0..2887cb14e4 100644
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--- a/src/main/java/net/minecraft/server/EntityEnderDragon.java
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+++ b/src/main/java/net/minecraft/server/EntityEnderDragon.java
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@@ -847,6 +847,7 @@ public class EntityEnderDragon extends EntityInsentient implements IMonster {
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@Override
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public void checkDespawn() {}
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+ public final EntityComplexPart[] getComplexParts() { return this.eo(); } // Paper - OBFHELPER
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public EntityComplexPart[] eo() {
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return this.children;
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}
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diff --git a/src/main/java/net/minecraft/server/IEntityAccess.java b/src/main/java/net/minecraft/server/IEntityAccess.java
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index 4157e50e4d..5135308fb6 100644
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--- a/src/main/java/net/minecraft/server/IEntityAccess.java
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+++ b/src/main/java/net/minecraft/server/IEntityAccess.java
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@@ -42,17 +42,26 @@ public interface IEntityAccess {
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return this.b(oclass, axisalignedbb, IEntitySelector.f);
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}
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+ // Paper start - optimise hard collision
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+ /**
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+ * Not guaranteed to only return hard colliding entites
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+ */
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+ default List<Entity> getHardCollidingEntities(@Nullable Entity entity, AxisAlignedBB axisalignedbb) {
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+ return this.getEntities(entity, axisalignedbb);
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+ }
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+ // Paper end - optimise hard collision
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+
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default Stream<VoxelShape> b(@Nullable Entity entity, AxisAlignedBB axisalignedbb, Set<Entity> set) {
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if (axisalignedbb.a() < 1.0E-7D) {
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return Stream.empty();
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} else {
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AxisAlignedBB axisalignedbb1 = axisalignedbb.g(1.0E-7D);
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- Stream<AxisAlignedBB> stream = this.getEntities(entity, axisalignedbb1).stream().filter((entity1) -> { // Paper - decompile fix
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+ Stream<AxisAlignedBB> stream = ((entity != null && entity.hardCollides()) ? this.getEntities(entity, axisalignedbb) : this.getHardCollidingEntities(entity, axisalignedbb1)).stream().filter((entity1) -> { // Paper - decompile fix // Paper - optimise hard collision
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return !set.contains(entity1);
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}).filter((entity1) -> {
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return entity == null || !entity.isSameVehicle(entity1);
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}).flatMap((entity1) -> {
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- return Stream.of(entity1.au(), entity == null ? null : entity.j(entity1));
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+ return Stream.of(entity1.au(), entity == null ? null : entity.j(entity1)); // Paper - optimise hard collision - diff on change, these are the methods that only hard colliding entities override
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}).filter(Objects::nonNull);
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return stream.filter(axisalignedbb1::c).map(VoxelShapes::a);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index c8619af2cf..899c535c40 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -1178,6 +1178,32 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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return this.getChunkAt(i, j, ChunkStatus.FULL, false);
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}
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+ // Paper start - optimise hard collision handling
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+ @Override
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+ public List<Entity> getHardCollidingEntities(@Nullable Entity entity, AxisAlignedBB axisalignedbb) {
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+ // copied from below
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+ List<Entity> list = Lists.newArrayList();
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+ int i = MathHelper.floor((axisalignedbb.minX - 2.0D) / 16.0D);
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+ int j = MathHelper.floor((axisalignedbb.maxX + 2.0D) / 16.0D);
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+ int k = MathHelper.floor((axisalignedbb.minZ - 2.0D) / 16.0D);
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+ int l = MathHelper.floor((axisalignedbb.maxZ + 2.0D) / 16.0D);
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+
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+ ChunkProviderServer chunkProvider = ((ChunkProviderServer)this.chunkProvider);
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+
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+ for (int i1 = i; i1 <= j; ++i1) {
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+ for (int j1 = k; j1 <= l; ++j1) {
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+ Chunk chunk = chunkProvider.getChunkAtIfLoadedMainThread(i1, j1);
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+
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+ if (chunk != null) {
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+ chunk.getHardCollidingEntities(entity, axisalignedbb, list);
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+ }
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+ }
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+ }
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+
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+ return list;
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+ }
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+ // Paper end - optimise hard collision handling
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+
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@Override
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public List<Entity> getEntities(@Nullable Entity entity, AxisAlignedBB axisalignedbb, @Nullable Predicate<? super Entity> predicate) {
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this.getMethodProfiler().c("getEntities");
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--
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2.26.2
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