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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.
67 lines
3.8 KiB
Diff
67 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Brody Beckwith <brody@beckwith.dev>
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Date: Fri, 14 Jan 2022 00:41:11 -0500
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Subject: [PATCH] Multi Block Change API Implementation
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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index 285da70a15f6e4c868747af9d40ac30bd4e42ef4..a0aeac9c29300a0cf6bad55133019e8c29f6cc1c 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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@@ -63,6 +63,15 @@ public class ClientboundSectionBlocksUpdatePacket implements Packet<ClientGamePa
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}
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+ // Paper start
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+ public ClientboundSectionBlocksUpdatePacket(SectionPos sectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<BlockState> blockChanges, boolean suppressLightUpdates) {
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+ this.sectionPos = sectionPos;
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+ this.positions = blockChanges.keySet().toShortArray();
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+ this.states = blockChanges.values().toArray(new BlockState[0]);
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+ this.suppressLightUpdates = suppressLightUpdates;
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+ }
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+ // Paper end
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+
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@Override
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public void write(FriendlyByteBuf buf) {
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buf.writeLong(this.sectionPos.asLong());
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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index e02720435b6ed5f07a13d08a209caf6df49799ad..674b7ff0c1e372ffb06336841e129d5c2130b6f9 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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@@ -923,6 +923,35 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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this.getHandle().connection.send(packet);
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}
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+ // Paper start
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+ @Override
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+ public void sendMultiBlockChange(Map<Location, BlockData> blockChanges, boolean suppressLightUpdates) {
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+ if (this.getHandle().connection == null) return;
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+
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+ Map<SectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState>> sectionMap = new HashMap<>();
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+
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+ for (Map.Entry<Location, BlockData> entry : blockChanges.entrySet()) {
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+ Location location = entry.getKey();
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+ if (!location.getWorld().equals(this.getWorld())) continue;
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+
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+ BlockData blockData = entry.getValue();
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+ BlockPos blockPos = new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ());
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+ SectionPos sectionPos = SectionPos.of(blockPos);
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+
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+ it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState> sectionData = sectionMap.computeIfAbsent(sectionPos, key -> new it.unimi.dsi.fastutil.shorts.Short2ObjectArrayMap<>());
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+ sectionData.put(SectionPos.sectionRelativePos(blockPos), ((CraftBlockData) blockData).getState());
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+ }
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+
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+ for (Map.Entry<SectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState>> entry : sectionMap.entrySet()) {
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+ SectionPos sectionPos = entry.getKey();
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+ it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState> blockData = entry.getValue();
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+
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+ net.minecraft.network.protocol.game.ClientboundSectionBlocksUpdatePacket packet = new net.minecraft.network.protocol.game.ClientboundSectionBlocksUpdatePacket(sectionPos, blockData, suppressLightUpdates);
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+ this.getHandle().connection.send(packet);
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+ }
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+ }
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+ // Paper end
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+
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@Override
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public void sendBlockChanges(Collection<BlockState> blocks, boolean suppressLightUpdates) {
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Preconditions.checkArgument(blocks != null, "blocks must not be null");
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