Paper/Spigot-Server-Patches/0072-Only-process-BlockPhysicsEvent-if-a-plugin-has-a-lis.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 28 Mar 2016 19:55:45 -0400
Subject: [PATCH] Only process BlockPhysicsEvent if a plugin has a listener
Saves on some object allocation and processing when no plugin listens to this
diff --git a/src/main/java/net/minecraft/server/BlockPlant.java b/src/main/java/net/minecraft/server/BlockPlant.java
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index 47e370667926e59f036be3f2befe8820668cf892..a830305f0e334ad87e6b9ed94230ff611d997d7e 100644
--- a/src/main/java/net/minecraft/server/BlockPlant.java
+++ b/src/main/java/net/minecraft/server/BlockPlant.java
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@@ -14,7 +14,7 @@ public class BlockPlant extends Block {
public IBlockData updateState(IBlockData iblockdata, EnumDirection enumdirection, IBlockData iblockdata1, GeneratorAccess generatoraccess, BlockPosition blockposition, BlockPosition blockposition1) {
// CraftBukkit start
if (!iblockdata.canPlace(generatoraccess, blockposition)) {
- if (!org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(generatoraccess, blockposition).isCancelled()) {
+ if (!(generatoraccess instanceof WorldServer && ((WorldServer) generatoraccess).hasPhysicsEvent) || !org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(generatoraccess, blockposition).isCancelled()) { // Paper
return Blocks.AIR.getBlockData();
}
}
diff --git a/src/main/java/net/minecraft/server/BlockTallPlant.java b/src/main/java/net/minecraft/server/BlockTallPlant.java
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index f87fc631255aa5948459f0726b188ebbbae13c5f..446a2ffcd95fd631750b74fd31b4c41013b8a5a8 100644
--- a/src/main/java/net/minecraft/server/BlockTallPlant.java
+++ b/src/main/java/net/minecraft/server/BlockTallPlant.java
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@@ -67,7 +67,7 @@ public class BlockTallPlant extends BlockPlant {
protected static void b(World world, BlockPosition blockposition, IBlockData iblockdata, EntityHuman entityhuman) {
// CraftBukkit start
- if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, blockposition).isCancelled()) {
+ if (((WorldServer)world).hasPhysicsEvent && org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, blockposition).isCancelled()) { // Paper
return;
}
// CraftBukkit end
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 991baec71cfeb79ee2108870645a19582f151def..a2954709415751d9688b5b3597f5b15ae5bd8ccb 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -1174,6 +1174,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
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while (iterator.hasNext()) {
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WorldServer worldserver = (WorldServer) iterator.next();
+ worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
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this.methodProfiler.a(() -> {
return worldserver + " " + worldserver.getDimensionKey().a();
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 1e72dd313e1fe0f701f3d14fffdc9a6a8db78934..948e477e112cd1e27c74a29c6330b07f9b710ffe 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
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@@ -441,7 +441,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
// CraftBukkit start
iblockdata1.b(this, blockposition, j); // Don't call an event for the old block to limit event spam
CraftWorld world = ((WorldServer) this).getWorld();
- if (world != null) {
+ if (world != null && ((WorldServer)this).hasPhysicsEvent) { // Paper
BlockPhysicsEvent event = new BlockPhysicsEvent(world.getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), CraftBlockData.fromData(iblockdata));
this.getServer().getPluginManager().callEvent(event);
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@@ -543,7 +543,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
try {
// CraftBukkit start
CraftWorld world = ((WorldServer) this).getWorld();
- if (world != null) {
+ if (world != null && ((WorldServer)this).hasPhysicsEvent) { // Paper
BlockPhysicsEvent event = new BlockPhysicsEvent(world.getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), CraftBlockData.fromData(iblockdata), world.getBlockAt(blockposition1.getX(), blockposition1.getY(), blockposition1.getZ()));
this.getServer().getPluginManager().callEvent(event);
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 5e64aca8c318f2fd909cd0e934867e890a152373..b800844c9a2ae76019213ccb64655eeea2885a67 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -82,6 +82,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
private int tickPosition;
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public final Convertable.ConversionSession convertable;
public final UUID uuid;
+ boolean hasPhysicsEvent = true; // Paper
@Override public Chunk getChunkIfLoaded(int x, int z) { // Paper - this was added in world too but keeping here for NMS ABI
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return this.chunkProvider.getChunkAt(x, z, false);