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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/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
index 0059ede4ba3ff271d47dd38ea87fddc2399aa008..a7d10d124021f3427f23fcd533f885367b64515c 100644
--- a/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
+++ b/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
@@ -34,7 +34,15 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
private boolean h;
public PacketPlayOutMapChunk() {}
+ // Paper start
+ private final java.util.List<Packet> extraPackets = new java.util.ArrayList<>();
+ private static final int TE_LIMIT = Integer.getInteger("Paper.excessiveTELimit", 750);
+ @Override
+ public java.util.List<Packet> getExtraPackets() {
+ return extraPackets;
+ }
+ // Paper end
public PacketPlayOutMapChunk(Chunk chunk, int i) {
ChunkCoordIntPair chunkcoordintpair = chunk.getPos();
@@ -61,6 +69,7 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
this.c = this.a(new PacketDataSerializer(this.j()), chunk, i);
this.g = Lists.newArrayList();
iterator = chunk.getTileEntities().entrySet().iterator();
+ int totalTileEntities = 0; // Paper
while (iterator.hasNext()) {
entry = (Entry) iterator.next();
@@ -69,6 +78,15 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
int j = blockposition.getY() >> 4;
if (this.f() || (i & 1 << j) != 0) {
+ // Paper start - improve oversized chunk data packet handling
+ if (++totalTileEntities > TE_LIMIT) {
+ PacketPlayOutTileEntityData updatePacket = tileentity.getUpdatePacket();
+ if (updatePacket != null) {
+ this.extraPackets.add(updatePacket);
+ continue;
+ }
+ }
+ // Paper end
NBTTagCompound nbttagcompound = tileentity.b();
if (tileentity instanceof TileEntitySkull) { TileEntitySkull.sanitizeTileEntityUUID(nbttagcompound); } // Paper
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