Mark chunks that are blocking main thread for world generation as urgent Implements a general priority system so that chunks that are sorted in the generator queues can prioritize certain chunks over another. Urgent chunks will jump to the front of the line, ensuring that a sync chunk load on an ungenerated chunk does not lag the server for a long period of time if the servers generator queues are filled with lots of chunks already. This massively reduces the lag spikes from sync chunk gens. Then we further prioritize loading order so nearby chunks have higher priority than distant chunks, reducing the pressure a high no tick view distance holds on you. Chunks in front of the player have higher priority, to help with fast traveling players keep up with their movement. This commit also improves single core cpu scenarios in that we will now automatically disable Async Chunks as well as Minecrafts thread pool. It is never recommended to use async chunks on a single CPU as context switching will be slower than just running it all on main. This also bumps the number of server worker threads by default too. Mojang does not utilize the workers in an effecient manner, resulting in them using barely any sustained CPU. So give it more workers so more chunks can be processed concurrently This change also improves urgent chunk loading, so players flying into unloaded chunks will hurt a little bit less (but still hurt) Ping #3395 #3363 (Not marking as closed, we need to make prevent moving work)
118 lines
6.3 KiB
Diff
118 lines
6.3 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: Wed, 13 May 2020 23:01:26 -0400
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Subject: [PATCH] Protect Bedrock and End Portal/Frames from being destroyed
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This fixes exploits that let players destroy bedrock by Pistons, explosions
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and Mushrooom/Tree generation.
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These blocks are designed to not be broken except by creative players/commands.
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So protect them from a multitude of methods of destroying them.
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A config is provided if you rather let players use these exploits, and let
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them destroy the worlds End Portals and get on top of the nether easy.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 3ee7e5671dd2519cec72b81211f1f39176a228ba..cf9b9de8688e3f655631451409096d7ec0471910 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -431,4 +431,10 @@ public class PaperConfig {
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private static void midTickChunkTasks() {
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midTickChunkTasks = getInt("settings.chunk-tasks-per-tick", midTickChunkTasks);
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}
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+
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+ public static boolean allowBlockPermanentBreakingExploits = false;
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+ private static void allowBlockPermanentBreakingExploits() {
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+ allowBlockPermanentBreakingExploits = getBoolean("allow-perm-block-break-exploits", allowBlockPermanentBreakingExploits);
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+ }
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+
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}
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diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
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index e40375b67a4a321048c87002a07fde5c5d2395db..d051a54aa04326f84e211cd68ddd2bb209230770 100644
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--- a/src/main/java/net/minecraft/server/Block.java
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+++ b/src/main/java/net/minecraft/server/Block.java
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@@ -32,6 +32,13 @@ public class Block implements IMaterial {
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protected final SoundEffectType stepSound;
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protected final Material material;
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// Paper start
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+ public final boolean isDestroyable() {
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+ return com.destroystokyo.paper.PaperConfig.allowBlockPermanentBreakingExploits ||
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+ this != Blocks.BEDROCK &&
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+ this != Blocks.END_PORTAL_FRAME &&
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+ this != Blocks.END_PORTAL &&
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+ this != Blocks.END_GATEWAY;
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+ }
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public co.aikar.timings.Timing timing;
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public co.aikar.timings.Timing getTiming() {
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if (timing == null) {
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@@ -276,7 +283,7 @@ public class Block implements IMaterial {
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@Deprecated
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public boolean a(IBlockData iblockdata, BlockActionContext blockactioncontext) {
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- return this.material.isReplaceable() && (blockactioncontext.getItemStack().isEmpty() || blockactioncontext.getItemStack().getItem() != this.getItem());
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+ return this.material.isReplaceable() && (blockactioncontext.getItemStack().isEmpty() || blockactioncontext.getItemStack().getItem() != this.getItem()) && (iblockdata.isDestroyable() || (blockactioncontext.getEntity() != null && blockactioncontext.getEntity().abilities.canInstantlyBuild)); // Paper
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}
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@Deprecated
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@@ -596,7 +603,7 @@ public class Block implements IMaterial {
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@Deprecated
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public EnumPistonReaction getPushReaction(IBlockData iblockdata) {
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- return this.material.getPushReaction();
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+ return !blockData.isDestroyable() ? EnumPistonReaction.BLOCK : this.material.getPushReaction(); // Paper
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}
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public void fallOn(World world, BlockPosition blockposition, Entity entity, float f) {
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diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
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index a353f3d5fa5a5f54335f73584589de3f5cb20d3e..2552f860ff7a25f74e9a0600e58cefe064fac484 100644
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--- a/src/main/java/net/minecraft/server/Explosion.java
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+++ b/src/main/java/net/minecraft/server/Explosion.java
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@@ -117,6 +117,7 @@ public class Explosion {
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for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
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BlockPosition blockposition = new BlockPosition(d4, d5, d6);
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IBlockData iblockdata = this.world.getType(blockposition);
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+ if (!iblockdata.isDestroyable()) continue; // Paper
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Fluid fluid = iblockdata.getFluid(); // Paper
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if (!iblockdata.isAir() || !fluid.isEmpty()) {
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@@ -282,7 +283,7 @@ public class Explosion {
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IBlockData iblockdata = this.world.getType(blockposition);
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Block block = iblockdata.getBlock();
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- if (!iblockdata.isAir()) {
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+ if (!iblockdata.isAir() && iblockdata.isDestroyable()) { // Paper
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BlockPosition blockposition1 = blockposition.immutableCopy();
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this.world.getMethodProfiler().enter("explosion_blocks");
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diff --git a/src/main/java/net/minecraft/server/IBlockData.java b/src/main/java/net/minecraft/server/IBlockData.java
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index b19bbbbc81376177751396a2de9452ce1f84c06b..296b41bf36ee1ace5bd9db2b810bf926b5f5278f 100644
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--- a/src/main/java/net/minecraft/server/IBlockData.java
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+++ b/src/main/java/net/minecraft/server/IBlockData.java
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@@ -52,6 +52,11 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
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return (CraftBlockData) cachedCraftBlockData.clone();
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}
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// Paper end
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+ // Paper start
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+ public final boolean isDestroyable() {
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+ return getBlock().isDestroyable();
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+ }
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+ // Paper end
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public Material getMaterial() {
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return this.getBlock().k(this);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 0e6368d0fb3beccb492ae3867fb4e22825f928a2..508a3ed1ed041c21f5ec1fd18dfb01311e5310bf 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -341,6 +341,10 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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public boolean setTypeAndData(BlockPosition blockposition, IBlockData iblockdata, int i) {
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// CraftBukkit start - tree generation
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if (this.captureTreeGeneration) {
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+ // Paper start
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+ IBlockData type = getType(blockposition);
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+ if (!type.isDestroyable()) return false;
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+ // Paper end
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CraftBlockState blockstate = capturedBlockStates.get(blockposition);
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if (blockstate == null) {
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blockstate = CapturedBlockState.getTreeBlockState(this, blockposition, i);
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