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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
65 lines
3.2 KiB
Diff
65 lines
3.2 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, 6 May 2020 05:00:57 -0400
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Subject: [PATCH] Handle Oversized Tile Entities in chunks
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Splits out Extra Packets if too many TE's are encountered to prevent
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creating too large of a packet to sed.
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Co authored by Spottedleaf
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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 fef3507dbaeb963ba4132ab7beb26d22ec39d425..568ac283baf40e2a89f5b002ffd899eba8008ef2 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
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@@ -24,6 +24,14 @@ public class ClientboundLevelChunkPacketData {
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private final CompoundTag heightmaps;
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private final byte[] buffer;
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private final List<ClientboundLevelChunkPacketData.BlockEntityInfo> blockEntitiesData;
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+ // Paper start
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+ 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);
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+
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+ public List<net.minecraft.network.protocol.Packet> getExtraPackets() {
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+ return this.extraPackets;
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+ }
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+ // Paper end
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public ClientboundLevelChunkPacketData(LevelChunk chunk) {
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this.heightmaps = new CompoundTag();
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@@ -37,8 +45,18 @@ public class ClientboundLevelChunkPacketData {
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this.buffer = new byte[calculateChunkSize(chunk)];
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extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk);
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this.blockEntitiesData = Lists.newArrayList();
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+ int totalTileEntities = 0; // Paper
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for(Map.Entry<BlockPos, BlockEntity> entry2 : chunk.getBlockEntities().entrySet()) {
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+ // Paper start
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+ if (++totalTileEntities > TE_LIMIT) {
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+ var packet = entry2.getValue().getUpdatePacket();
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+ if (packet != null) {
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+ this.extraPackets.add(packet);
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+ continue;
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+ }
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+ }
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+ // Paper end
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this.blockEntitiesData.add(ClientboundLevelChunkPacketData.BlockEntityInfo.create(entry2.getValue()));
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}
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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 aee73c4e20aff9bd0a560dc891f74f4f601c24b6..7825d6f0fdcfda6212cff8033ec55fb7db236154 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java
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@@ -57,4 +57,11 @@ public class ClientboundLevelChunkWithLightPacket implements Packet<ClientGamePa
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public ClientboundLightUpdatePacketData getLightData() {
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return this.lightData;
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}
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+
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+ // Paper start - handle over-sized TE packets
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+ @Override
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+ public java.util.List<Packet> getExtraPackets() {
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+ return this.chunkData.getExtraPackets();
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+ }
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+ // Paper end
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}
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