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Upstream has released updates that appear 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: d25437bc Update to Minecraft 1.18-pre8 CraftBukkit Changes: 5a39a236 Update to Minecraft 1.18-pre8 Spigot Changes: 7840c2af Update to Minecraft 1.18-pre8
112 lines
6.8 KiB
Diff
112 lines
6.8 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/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
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index 494b18a3dfa05b5e6ecbb9b99abf06bfe6e1d166..5c54bc74c668778161ae47c9160f8c4c9a566847 100644
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--- a/src/main/java/net/minecraft/server/players/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
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@@ -791,6 +791,7 @@ 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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+ 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
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while (avoidSuffocation && !worldserver1.noCollision(entityplayer1) && entityplayer1.getY() < (double) worldserver1.getMaxBuildHeight()) {
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entityplayer1.setPos(entityplayer1.getX(), entityplayer1.getY() + 1.0D, entityplayer1.getZ());
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}
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 13e6fd62d7e9026a31455c5e2fa36392c7a0b249..c068e5fad2d9238201cada0d3a77ff2af1b8d8e1 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -171,6 +171,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
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// Paper end
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public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper
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+ public boolean collisionLoadChunks = false; // Paper
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private CraftEntity bukkitEntity;
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public net.minecraft.server.level.ChunkMap.TrackedEntity tracker; // Paper
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diff --git a/src/main/java/net/minecraft/world/level/BlockCollisions.java b/src/main/java/net/minecraft/world/level/BlockCollisions.java
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index 8390ce194ccc692139c0e870c16a7fb76ac8ba68..d40bbc5ae6b87028a6dde400ea714249792da79a 100644
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--- a/src/main/java/net/minecraft/world/level/BlockCollisions.java
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+++ b/src/main/java/net/minecraft/world/level/BlockCollisions.java
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@@ -66,22 +66,41 @@ public class BlockCollisions extends AbstractIterator<VoxelShape> {
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protected VoxelShape computeNext() {
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while(true) {
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if (this.cursor.advance()) {
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- int i = this.cursor.nextX();
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- int j = this.cursor.nextY();
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- int k = this.cursor.nextZ();
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+ int i = this.cursor.nextX(); final int x = i; // Paper
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+ int j = this.cursor.nextY(); final int y = j; // Paper
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+ int k = this.cursor.nextZ(); final int z = k; // Paper
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int l = this.cursor.getNextType();
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if (l == 3) {
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continue;
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}
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+ // Paper start - ensure we don't load chunks
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+ final @Nullable Entity source = this.context instanceof net.minecraft.world.phys.shapes.EntityCollisionContext entityContext ? entityContext.getEntity() : null;
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+ boolean far = source != null && net.minecraft.server.MCUtil.distanceSq(source.getX(), y, source.getZ(), x, y, z) > 14;
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+ this.pos.set(x, y, z);
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- BlockGetter blockGetter = this.getChunk(i, k);
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- if (blockGetter == null) {
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+ BlockState blockState;
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+ if (this.collisionGetter instanceof net.minecraft.server.level.WorldGenRegion) {
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+ BlockGetter blockGetter = this.getChunk(x, z);
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+ if (blockGetter == null) {
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+ continue;
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+ }
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+ blockState = blockGetter.getBlockState(this.pos);
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+ } else if ((!far && source instanceof net.minecraft.server.level.ServerPlayer) || (source != null && source.collisionLoadChunks)) {
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+ blockState = this.collisionGetter.getBlockState(this.pos);
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+ } else {
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+ blockState = this.collisionGetter.getTypeIfLoaded(this.pos);
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+ }
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+
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+ if (blockState == null) {
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+ if (!(source instanceof net.minecraft.server.level.ServerPlayer) || source.level.paperConfig.preventMovingIntoUnloadedChunks) {
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+ return Shapes.create(far ? source.getBoundingBox() : new AABB(new BlockPos(x, y, z)));
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+ }
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+ // Paper end
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continue;
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}
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- this.pos.set(i, j, k);
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- BlockState blockState = blockGetter.getBlockState(this.pos);
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- if (this.onlySuffocatingBlocks && !blockState.isSuffocating(blockGetter, this.pos) || l == 1 && !blockState.hasLargeCollisionShape() || l == 2 && !blockState.is(Blocks.MOVING_PISTON)) {
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+ // Paper - moved up
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+ if (/*this.onlySuffocatingBlocks && (!blockState.isSuffocating(blockGetter, this.pos)) ||*/ l == 1 && !blockState.hasLargeCollisionShape() || l == 2 && !blockState.is(Blocks.MOVING_PISTON)) { // Paper - onlySuffocatingBlocks is only true on the client, so we don't care about it here
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continue;
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}
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diff --git a/src/main/java/net/minecraft/world/level/CollisionGetter.java b/src/main/java/net/minecraft/world/level/CollisionGetter.java
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index 4c373d6c8ddd9f5db88888cd8dbbfc24eb5df793..56d94c94fb0d4dc468bb5d69be655ddd5c6b5360 100644
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--- a/src/main/java/net/minecraft/world/level/CollisionGetter.java
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+++ b/src/main/java/net/minecraft/world/level/CollisionGetter.java
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@@ -44,11 +44,13 @@ public interface CollisionGetter extends BlockGetter {
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}
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default boolean noCollision(@Nullable Entity entity, AABB box) {
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+ try { if (entity != null) entity.collisionLoadChunks = true; // Paper
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for(VoxelShape voxelShape : this.getBlockCollisions(entity, box)) {
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if (!voxelShape.isEmpty()) {
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return false;
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}
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}
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+ } finally { if (entity != null) entity.collisionLoadChunks = false; } // Paper
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if (!this.getEntityCollisions(entity, box).isEmpty()) {
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return false;
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