116 lines
7.5 KiB
Diff
116 lines
7.5 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 7434f859f7f9acff0f881ff594c8dffdfa249c76..7fb34a86dc35cb4bf51e1ce5220e56642096fece 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 f851ed11df14fd9aa8017f44d82fb6cfc3bde345..667e6c8f94162b620a7157c7d3caba9369c37de1 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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@@ -39,7 +39,12 @@ public interface ICollisionAccess extends IBlockAccess {
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}
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default boolean getCubes(Entity entity, AxisAlignedBB axisalignedbb) {
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- return this.a(entity, axisalignedbb, Collections.emptySet());
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+ // Paper start - load chunks for getCubes
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+ entity.collisionLoadChunks = true;
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+ boolean result = this.a(entity, axisalignedbb, Collections.emptySet());
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+ entity.collisionLoadChunks = false;
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+ return result;
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+ // Paper end
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}
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default boolean a(@Nullable Entity entity, AxisAlignedBB axisalignedbb, Set<Entity> set) {
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@@ -83,19 +88,33 @@ public interface ICollisionAccess extends IBlockAccess {
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}
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while (cursorposition.a()) {
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- int k1 = cursorposition.b();
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- int l1 = cursorposition.c();
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- int i2 = cursorposition.d();
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+ int k1 = cursorposition.b();int x = k1; // Paper
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+ int l1 = cursorposition.c();int y = l1; // Paper
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+ int i2 = cursorposition.d();int z = i2; // Paper
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int j2 = cursorposition.e();
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if (j2 != 3) {
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- int k2 = k1 >> 4;
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- int l2 = i2 >> 4;
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- IBlockAccess iblockaccess = ICollisionAccess.this.c(k2, l2);
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-
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- if (iblockaccess != null) {
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- blockposition_mutableblockposition.d(k1, l1, i2);
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- IBlockData iblockdata = iblockaccess.getType(blockposition_mutableblockposition);
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+ // Paper start - ensure we don't load chunks
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+ //int k2 = k1 >> 4;
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+ //int l2 = i2 >> 4;
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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 = ICollisionAccess.this 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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+ ? ICollisionAccess.this.getType(blockposition_mutableblockposition)
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+ : ICollisionAccess.this.getTypeIfLoaded(blockposition_mutableblockposition)
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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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+ } else {
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+ //blockposition_mutableblockposition.d(k1, l1, i2); // moved up
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+ //IBlockData iblockdata = iblockaccess.getType(blockposition_mutableblockposition); // moved up
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+ // Paper end
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if ((j2 != 1 || iblockdata.f()) && (j2 != 2 || iblockdata.getBlock() == Blocks.MOVING_PISTON)) {
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VoxelShape voxelshape2 = iblockdata.b((IBlockAccess) ICollisionAccess.this, blockposition_mutableblockposition, voxelshapecollision);
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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 b5389cc46bf7afffe59522149e3d5567ad455ef3..90a491491272cfc6787e7ac778c23def0cf4b33a 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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@@ -677,6 +677,7 @@ 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 && !worldserver.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/VoxelShapes.java b/src/main/java/net/minecraft/server/VoxelShapes.java
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index 335142ec0dfad822cfe40877e99dec0f307e1a58..e641d4b8d8b4ac5d539e6d9c0eaf345601e0b499 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.f()) && (k2 != 2 || iblockdata.getBlock() == 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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