mirror of
https://github.com/PaperMC/Paper.git
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109 lines
7.2 KiB
Diff
109 lines
7.2 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 d12ac1b045c6721255780c5afbbad6e7103629eb..59cc1702079f1d182bdbe8068aa37b5b979aa64d 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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@@ -827,6 +827,7 @@ public abstract class PlayerList {
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Vec3 vec3d = teleporttransition.position();
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entityplayer1.forceSetPositionRotation(vec3d.x, vec3d.y, vec3d.z, teleporttransition.yRot(), teleporttransition.xRot());
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+ worldserver.getChunkSource().addRegionTicket(net.minecraft.server.level.TicketType.POST_TELEPORT, new net.minecraft.world.level.ChunkPos(net.minecraft.util.Mth.floor(vec3d.x()) >> 4, net.minecraft.util.Mth.floor(vec3d.z()) >> 4), 1, entityplayer.getId()); // Paper
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// CraftBukkit end
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if (teleporttransition.missingRespawnBlock()) {
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entityplayer1.connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.NO_RESPAWN_BLOCK_AVAILABLE, 0.0F));
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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 996506b879c90642eaeac757b31f3e11e798a6b5..87136591e2a8421b46e124b0093c56da87aec61b 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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@@ -258,6 +258,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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// Paper end - Share random for entities to make them more random
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public org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason spawnReason; // Paper - Entity#getEntitySpawnReason
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+ public boolean collisionLoadChunks = false; // Paper
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private CraftEntity bukkitEntity;
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public CraftEntity getBukkitEntity() {
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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 12a14b8fdb079fd8c367e51299486761ebdaeb5b..b360594424118d9d11d00ea140160485048591ca 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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@@ -72,16 +72,37 @@ public class BlockCollisions<T> extends AbstractIterator<T> {
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@Override
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protected T computeNext() {
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while (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 - OBFHELPER
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+ int j = this.cursor.nextY(); final int y = j; // Paper - OBFHELPER
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+ int k = this.cursor.nextZ(); final int z = k; // Paper - OBFHELPER
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int l = this.cursor.getNextType();
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if (l != 3) {
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- BlockGetter blockGetter = this.getChunk(i, k);
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- if (blockGetter != null) {
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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))
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+ // Paper start - ensure we don't load chunks
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+ // BlockGetter blockGetter = this.getChunk(i, k);
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+ if (true) {
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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 && io.papermc.paper.util.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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+ 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.getBlockStateIfLoaded(this.pos);
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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().chunks.preventMovingIntoUnloadedChunks) {
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+ return this.resultProvider.apply(new BlockPos.MutableBlockPos(x, y, z), Shapes.create(far ? source.getBoundingBox() : new AABB(new BlockPos(x, y, z))));
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+ }
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+ continue;
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+ }
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+ if (true // onlySuffocatingBlocks is only true on the client, so we don't care about it here
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+ // Paper end - ensure we don't load chunks
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&& (l != 1 || blockState.hasLargeCollisionShape())
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&& (l != 2 || blockState.is(Blocks.MOVING_PISTON))) {
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VoxelShape voxelShape = this.context.getCollisionShape(blockState, this.collisionGetter, this.pos);
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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 6b63dc10c0a4db8a484588a6d67911ea1023457e..f4c251c2bcfa96ba22e338b97a1de7f0abac5a6f 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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@@ -50,11 +50,13 @@ public interface CollisionGetter extends BlockGetter {
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}
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default boolean noCollision(@Nullable Entity entity, AABB box, boolean checkFluid) {
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- for (VoxelShape voxelShape : checkFluid ? this.getBlockAndLiquidCollisions(entity, box) : this.getBlockCollisions(entity, box)) {
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+ try { if (entity != null) entity.collisionLoadChunks = true; // Paper
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+ for (VoxelShape voxelShape : checkFluid ? this.getBlockAndLiquidCollisions(entity, box) : 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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