From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Thu, 2 Apr 2020 02:37:57 -0400 Subject: [PATCH] Optimize Collision to not load chunks The collision code takes an AABB and generates a cuboid of checks rather than a cylinder, so at high velocity this can generate a lot of chunk checks. Treat an unloaded chunk as a collision for entities, and also for players if the "prevent moving into unloaded chunks" setting is enabled. If that serting is not enabled, collisions will be ignored for players, since movement will load only the chunk the player enters anyways and avoids loading massive amounts of surrounding chunks due to large AABB lookups. diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java index 2730923bd0bf3b0f928765b9e09e2299fa9a393d..f98a1c32e0c209473cf7268cbd8245ab9c134d28 100644 --- a/src/main/java/net/minecraft/server/players/PlayerList.java +++ b/src/main/java/net/minecraft/server/players/PlayerList.java @@ -783,6 +783,7 @@ public abstract class PlayerList { entityplayer1.forceSetPositionRotation(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch()); // CraftBukkit end + worldserver1.getChunkSource().addRegionTicket(net.minecraft.server.level.TicketType.POST_TELEPORT, new net.minecraft.world.level.ChunkPos(location.getBlockX() >> 4, location.getBlockZ() >> 4), 1, entityplayer.getId()); // Paper while (avoidSuffocation && !worldserver1.noCollision(entityplayer1) && entityplayer1.getY() < (double) worldserver1.getMaxBuildHeight()) { entityplayer1.setPos(entityplayer1.getX(), entityplayer1.getY() + 1.0D, entityplayer1.getZ()); } diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 7e314890b52621f18ff697a545e3e289a0c0d989..fa63a52cba5355612ce417f4bb8077a89ce59398 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -172,6 +172,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n // Paper end public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper + public boolean collisionLoadChunks = false; // Paper private CraftEntity bukkitEntity; public net.minecraft.server.level.ChunkMap.TrackedEntity tracker; // Paper diff --git a/src/main/java/net/minecraft/world/level/CollisionGetter.java b/src/main/java/net/minecraft/world/level/CollisionGetter.java index b980c26ab5cac02e03525177a9dc4fb0b6a2f9f6..2a784a8342e708e0813c7076a2ca8e429446ffd3 100644 --- a/src/main/java/net/minecraft/world/level/CollisionGetter.java +++ b/src/main/java/net/minecraft/world/level/CollisionGetter.java @@ -55,7 +55,9 @@ public interface CollisionGetter extends BlockGetter { } default boolean noCollision(@Nullable Entity entity, AABB box, Predicate filter) { + try { if (entity != null) entity.collisionLoadChunks = true; // Paper return this.getCollisions(entity, box, filter).allMatch(VoxelShape::isEmpty); + } finally { if (entity != null) entity.collisionLoadChunks = false; } // Paper } Stream getEntityCollisions(@Nullable Entity entity, AABB box, Predicate predicate); diff --git a/src/main/java/net/minecraft/world/level/CollisionSpliterator.java b/src/main/java/net/minecraft/world/level/CollisionSpliterator.java index e6190bfb893de12e87e1da49001ebd963b3d6318..7f8a914085e3d89668e8f41fd099e3b77867f03e 100644 --- a/src/main/java/net/minecraft/world/level/CollisionSpliterator.java +++ b/src/main/java/net/minecraft/world/level/CollisionSpliterator.java @@ -64,21 +64,35 @@ public class CollisionSpliterator extends AbstractSpliterator { boolean collisionCheck(Consumer action) { while(true) { if (this.cursor.advance()) { - int i = this.cursor.nextX(); - int j = this.cursor.nextY(); - int k = this.cursor.nextZ(); + int i = this.cursor.nextX(); final int x = i; + int j = this.cursor.nextY(); final int y = j; + int k = this.cursor.nextZ(); final int z = k; int l = this.cursor.getNextType(); if (l == 3) { continue; } - BlockGetter blockGetter = this.getChunk(i, k); - if (blockGetter == null) { + // Paper start - ensure we don't load chunks + boolean far = this.source != null && net.minecraft.server.MCUtil.distanceSq(this.source.getX(), y, this.source.getZ(), x, y, z) > 14; + this.pos.setValues(x, y, z); + + boolean isRegionLimited = this.collisionGetter instanceof net.minecraft.server.level.WorldGenRegion; + BlockState blockState = isRegionLimited ? Blocks.VOID_AIR.defaultBlockState() : ((!far && this.source instanceof net.minecraft.server.level.ServerPlayer) || (this.source != null && this.source.collisionLoadChunks) + ? this.collisionGetter.getBlockState(this.pos) + : this.collisionGetter.getTypeIfLoaded(this.pos) + ); + + if (blockState == null) { + if (!(this.source instanceof net.minecraft.server.level.ServerPlayer) || this.source.level.paperConfig.preventMovingIntoUnloadedChunks) { + VoxelShape voxelshape3 = Shapes.create(far ? this.source.getBoundingBox() : new AABB(new BlockPos(x, y, z))); + action.accept(voxelshape3); + return true; + } continue; } + // Paper - moved up + // Paper end - this.pos.set(i, j, k); - BlockState blockState = blockGetter.getBlockState(this.pos); if (!this.predicate.test(blockState, this.pos) || l == 1 && !blockState.hasLargeCollisionShape() || l == 2 && !blockState.is(Blocks.MOVING_PISTON)) { continue; } diff --git a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java index 5d4d953f197afc402248ab73daeb6ef59134f48f..95428f13dae909bb7de552aa65e4256bd4049c65 100644 --- a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java +++ b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java @@ -238,7 +238,8 @@ public final class Shapes { if (s < 3) { mutableBlockPos.set(axisCycle, q, r, p); - BlockState blockState = world.getBlockState(mutableBlockPos); + BlockState blockState = world.getTypeIfLoaded(mutableBlockPos); // Paper + if (blockState == null) return 0.0D; // Paper if ((s != 1 || blockState.hasLargeCollisionShape()) && (s != 2 || blockState.is(Blocks.MOVING_PISTON))) { initial = blockState.getCollisionShape(world, mutableBlockPos, context).collide(axis3, box.move((double)(-mutableBlockPos.getX()), (double)(-mutableBlockPos.getY()), (double)(-mutableBlockPos.getZ())), initial); if (Math.abs(initial) < 1.0E-7D) {