PaperMC/patches/server/1027-Handle-Oversized-block-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 block entities in chunks
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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 <Spottedleaf@users.noreply.github.com>
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
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index 05e29a703f022b5047262bae8caef33d9dfb9035..2501fbaf497d226051800c53d60a39bbc80db91c 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
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@@ -27,6 +27,14 @@ public class ClientboundLevelChunkPacketData {
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private final CompoundTag heightmaps;
private final byte[] buffer;
private final List<ClientboundLevelChunkPacketData.BlockEntityInfo> blockEntitiesData;
+ // Paper start - Handle oversized block entities in chunks
+ 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 - Handle oversized block entities in chunks
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// Paper start - Anti-Xray - Add chunk packet info
@Deprecated @io.papermc.paper.annotation.DoNotUse public ClientboundLevelChunkPacketData(LevelChunk chunk) { this(chunk, null); }
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@@ -50,8 +58,18 @@ public class ClientboundLevelChunkPacketData {
extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk, chunkPacketInfo);
// Paper end
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this.blockEntitiesData = Lists.newArrayList();
+ int totalTileEntities = 0; // Paper - Handle oversized block entities in chunks
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for (Entry<BlockPos, BlockEntity> entry2 : chunk.getBlockEntities().entrySet()) {
+ // Paper start - Handle oversized block entities in chunks
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+ if (++totalTileEntities > TE_LIMIT) {
+ var packet = entry2.getValue().getUpdatePacket();
+ if (packet != null) {
+ this.extraPackets.add(packet);
+ continue;
+ }
+ }
+ // Paper end - Handle oversized block entities in chunks
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this.blockEntitiesData.add(ClientboundLevelChunkPacketData.BlockEntityInfo.create(entry2.getValue()));
}
}
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
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index 8ead66c134688b11dca15f6509147e726f182e6a..cfcac0fdc130120cb1f8d97c6353d93db7ddf81b 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
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@@ -83,4 +83,11 @@ public class ClientboundLevelChunkWithLightPacket implements Packet<ClientGamePa
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public ClientboundLightUpdatePacketData getLightData() {
return this.lightData;
}
+
+ // Paper start - Handle oversized block entities in chunks
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+ @Override
+ public java.util.List<Packet<?>> getExtraPackets() {
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+ return this.chunkData.getExtraPackets();
+ }
+ // Paper end - Handle oversized block entities in chunks
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}