Paper/patches/server/0299-Handle-Oversized-Tile-Entities-in-chunks.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 6 May 2020 05:00:57 -0400
Subject: [PATCH] Handle Oversized Tile Entities in chunks
Splits out Extra Packets if too many TE's are encountered to prevent
creating too large of a packet to sed.
Co authored by Spottedleaf
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
index f47eeb70661661610ef1a96dd9da67785825c126..0711ad682206e783fd0a1e566828670321f297e2 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
@@ -24,6 +24,14 @@ public class ClientboundLevelChunkPacketData {
private final CompoundTag heightmaps;
private final byte[] buffer;
private final List<ClientboundLevelChunkPacketData.BlockEntityInfo> blockEntitiesData;
+ // Paper start
+ private final java.util.List<net.minecraft.network.protocol.Packet<?>> extraPackets = new java.util.ArrayList<>();
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+ private static final int TE_LIMIT = Integer.getInteger("Paper.excessiveTELimit", 750);
+
+ public List<net.minecraft.network.protocol.Packet<?>> getExtraPackets() {
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+ return this.extraPackets;
+ }
+ // Paper end
public ClientboundLevelChunkPacketData(LevelChunk chunk) {
this.heightmaps = new CompoundTag();
@@ -37,8 +45,18 @@ public class ClientboundLevelChunkPacketData {
this.buffer = new byte[calculateChunkSize(chunk)];
extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk);
this.blockEntitiesData = Lists.newArrayList();
+ int totalTileEntities = 0; // Paper
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for(Map.Entry<BlockPos, BlockEntity> entry2 : chunk.getBlockEntities().entrySet()) {
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+ // Paper start
+ if (++totalTileEntities > TE_LIMIT) {
+ var packet = entry2.getValue().getUpdatePacket();
+ if (packet != null) {
+ this.extraPackets.add(packet);
+ continue;
+ }
+ }
+ // Paper end
this.blockEntitiesData.add(ClientboundLevelChunkPacketData.BlockEntityInfo.create(entry2.getValue()));
}
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
index 26e46d751c8f8162c2bafe2fc109fc91dc4b7c0f..be89e5b8c1ea7f85aef267a15986affa5fa1fd4b 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
@@ -57,4 +57,11 @@ public class ClientboundLevelChunkWithLightPacket implements Packet<ClientGamePa
public ClientboundLightUpdatePacketData getLightData() {
return this.lightData;
}
+
+ // Paper start - handle over-sized TE packets
+ @Override
+ public java.util.List<Packet<?>> getExtraPackets() {
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+ return this.chunkData.getExtraPackets();
+ }
+ // Paper end
}