136 lines
8.1 KiB
Diff
136 lines
8.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 2 Apr 2020 02:37:57 -0400
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Subject: [PATCH] Optimize Collision to not load chunks
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The collision code takes an AABB and generates a cuboid of checks rather
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than a cylinder, so at high velocity this can generate a lot of chunk checks.
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Treat an unloaded chunk as a collision for entities, and also for players if
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the "prevent moving into unloaded chunks" setting is enabled.
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If that serting is not enabled, collisions will be ignored for players, since
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movement will load only the chunk the player enters anyways and avoids loading
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massive amounts of surrounding chunks due to large AABB lookups.
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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 d4bb4e73ce8867ce56dce0ea84dea2dff91846d4..8f1e8728502d1dcae1fb538875f72460fc926d7c 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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@@ -80,6 +80,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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private CraftEntity bukkitEntity;
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PlayerChunkMap.EntityTracker tracker; // Paper
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+ boolean collisionLoadChunks = false; // Paper
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Throwable addedToWorldStack; // Paper - entity debug
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public CraftEntity getBukkitEntity() {
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if (bukkitEntity == null) {
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diff --git a/src/main/java/net/minecraft/server/ICollisionAccess.java b/src/main/java/net/minecraft/server/ICollisionAccess.java
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index b27260270de80de371a5a71fa0516aa43c44c83e..1cc40b1f0af9e617b2a71bcc442543e10b2dc61a 100644
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--- a/src/main/java/net/minecraft/server/ICollisionAccess.java
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+++ b/src/main/java/net/minecraft/server/ICollisionAccess.java
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@@ -46,7 +46,9 @@ public interface ICollisionAccess extends IBlockAccess {
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}
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default boolean b(@Nullable Entity entity, AxisAlignedBB axisalignedbb, Predicate<Entity> predicate) {
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+ try { if (entity != null) entity.collisionLoadChunks = true; // Paper
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return this.d(entity, axisalignedbb, predicate).allMatch(VoxelShape::isEmpty);
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+ } finally { if (entity != null) entity.collisionLoadChunks = false; } // Paper
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}
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Stream<VoxelShape> c(@Nullable Entity entity, AxisAlignedBB axisalignedbb, Predicate<Entity> predicate);
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diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
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index 9e635fa562264ee9454adb6dd7fc47f45d8b3242..4189c315176415b121c6e8f8d3c9682caded2189 100644
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--- a/src/main/java/net/minecraft/server/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/PlayerList.java
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@@ -724,6 +724,7 @@ public abstract class PlayerList {
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entityplayer1.forceSetPositionRotation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
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// CraftBukkit end
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+ worldserver.getChunkProvider().addTicket(TicketType.POST_TELEPORT, new ChunkCoordIntPair(location.getBlockX() >> 4, location.getBlockZ() >> 4), 1, entityplayer.getId()); // Paper
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while (avoidSuffocation && !worldserver1.getCubes(entityplayer1) && entityplayer1.locY() < 256.0D) {
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entityplayer1.setPosition(entityplayer1.locX(), entityplayer1.locY() + 1.0D, entityplayer1.locZ());
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}
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diff --git a/src/main/java/net/minecraft/server/VoxelShapeSpliterator.java b/src/main/java/net/minecraft/server/VoxelShapeSpliterator.java
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index 4967d1ebd109c462a322e4829d01ff519d1b5366..ed0f3ddbcb7d6ce8a59ae3829f4cb11ae75046cb 100644
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--- a/src/main/java/net/minecraft/server/VoxelShapeSpliterator.java
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+++ b/src/main/java/net/minecraft/server/VoxelShapeSpliterator.java
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@@ -9,13 +9,13 @@ import javax.annotation.Nullable;
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public class VoxelShapeSpliterator extends AbstractSpliterator<VoxelShape> {
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@Nullable
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- private final Entity a;
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+ private final Entity a; final Entity getEntity() { return this.a; } // Paper - OBFHELPER
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private final AxisAlignedBB b;
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private final VoxelShapeCollision c;
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private final CursorPosition d;
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- private final BlockPosition.MutableBlockPosition e;
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+ private final BlockPosition.MutableBlockPosition e; final BlockPosition.MutableBlockPosition getMutablePos() { return this.e; } // Paper - OBFHELPER
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private final VoxelShape f;
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- private final ICollisionAccess g;
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+ private final ICollisionAccess g; final ICollisionAccess getCollisionAccess() { return this.g; } // Paper - OBFHELPER
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private boolean h;
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private final BiPredicate<IBlockData, BlockPosition> i;
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@@ -52,23 +52,37 @@ public class VoxelShapeSpliterator extends AbstractSpliterator<VoxelShape> {
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boolean a(Consumer<? super VoxelShape> consumer) {
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while (true) {
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if (this.d.a()) {
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- int i = this.d.b();
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- int j = this.d.c();
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- int k = this.d.d();
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+ int i = this.d.b(); final int x = i;
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+ int j = this.d.c(); final int y = j;
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+ int k = this.d.d(); final int z = k;
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int l = this.d.e();
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if (l == 3) {
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continue;
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}
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- IBlockAccess iblockaccess = this.a(i, k);
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-
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- if (iblockaccess == null) {
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+ // Paper start - ensure we don't load chunks
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+ Entity entity = this.getEntity();
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+ BlockPosition.MutableBlockPosition blockposition_mutableblockposition = this.getMutablePos();
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+ boolean far = entity != null && MCUtil.distanceSq(entity.locX(), y, entity.locZ(), x, y, z) > 14;
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+ blockposition_mutableblockposition.setValues(x, y, z);
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+
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+ boolean isRegionLimited = this.getCollisionAccess() instanceof RegionLimitedWorldAccess;
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+ IBlockData iblockdata = isRegionLimited ? Blocks.VOID_AIR.getBlockData() : ((!far && entity instanceof EntityPlayer) || (entity != null && entity.collisionLoadChunks)
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+ ? this.getCollisionAccess().getType(blockposition_mutableblockposition)
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+ : this.getCollisionAccess().getTypeIfLoaded(blockposition_mutableblockposition)
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+ );
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+
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+ if (iblockdata == null) {
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+ if (!(entity instanceof EntityPlayer) || entity.world.paperConfig.preventMovingIntoUnloadedChunks) {
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+ VoxelShape voxelshape3 = VoxelShapes.of(far ? entity.getBoundingBox() : new AxisAlignedBB(new BlockPosition(x, y, z)));
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+ consumer.accept(voxelshape3);
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+ return true;
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+ }
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continue;
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}
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-
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- this.e.d(i, j, k);
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- IBlockData iblockdata = iblockaccess.getType(this.e);
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+ // Paper - moved up
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+ // Paper end
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if (!this.i.test(iblockdata, this.e) || l == 1 && !iblockdata.d() || l == 2 && !iblockdata.a(Blocks.MOVING_PISTON)) {
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continue;
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diff --git a/src/main/java/net/minecraft/server/VoxelShapes.java b/src/main/java/net/minecraft/server/VoxelShapes.java
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index b6e2a3d8d0cf510f497c6f974356fafaf2adc13b..4acde367542247627574fdeb586fb8c9087eef1a 100644
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--- a/src/main/java/net/minecraft/server/VoxelShapes.java
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+++ b/src/main/java/net/minecraft/server/VoxelShapes.java
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@@ -239,7 +239,8 @@ public final class VoxelShapes {
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if (k2 < 3) {
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blockposition_mutableblockposition.a(enumaxiscycle1, i2, j2, l1);
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- IBlockData iblockdata = iworldreader.getType(blockposition_mutableblockposition);
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+ IBlockData iblockdata = iworldreader.getTypeIfLoaded(blockposition_mutableblockposition); // Paper
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+ if (iblockdata == null) return 0.0D; // Paper
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if ((k2 != 1 || iblockdata.d()) && (k2 != 2 || iblockdata.a(Blocks.MOVING_PISTON))) {
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d0 = iblockdata.b((IBlockAccess) iworldreader, blockposition_mutableblockposition, voxelshapecollision).a(enumdirection_enumaxis2, axisalignedbb.d((double) (-blockposition_mutableblockposition.getX()), (double) (-blockposition_mutableblockposition.getY()), (double) (-blockposition_mutableblockposition.getZ())), d0);
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