From ab403a7a18215240cd8a731850c02960236e2931 Mon Sep 17 00:00:00 2001
From: jhqwqmc <2110242767@qq.com>
Date: Sat, 26 Apr 2025 02:29:47 +0800
Subject: [PATCH] =?UTF-8?q?fix(network):=20=E9=80=9A=E8=BF=87=E6=B5=AA?=
 =?UTF-8?q?=E8=B4=B9=E6=80=A7=E8=83=BD=E4=BF=AE=E5=A4=8D=201.20=20?=
 =?UTF-8?q?=E7=9A=84=E9=97=AE=E9=A2=98?=
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- 虽然性能可能比之前会好一点
---
 .../plugin/network/PacketConsumers.java       | 69 +++++++++++++++++++
 gradle.properties                             |  2 +-
 2 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
index 387f7494b..03c8d4ce0 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
@@ -97,6 +97,75 @@ public class PacketConsumers {
         try {
             BukkitServerPlayer player = (BukkitServerPlayer) user;
             FriendlyByteBuf buf = event.getBuffer();
+            // 我不明白为什么1.20~1.20.1会出问题，貌似是readNbt的问题
+            if (!VersionHelper.isVersionNewerThan1_20_2()) {
+                Object packet = FastNMS.INSTANCE.constructor$ClientboundLevelChunkWithLightPacket(buf);
+                if (user.clientModEnabled()) {
+                    Object chunkData = FastNMS.INSTANCE.field$ClientboundLevelChunkWithLightPacket$chunkData(packet);
+                    byte[] buffer = FastNMS.INSTANCE.field$ClientboundLevelChunkPacketData$buffer(chunkData);
+                    ByteBuf byteBuf = Unpooled.copiedBuffer(buffer);
+                    FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(byteBuf);
+                    FriendlyByteBuf newBuf = new FriendlyByteBuf(Unpooled.buffer());
+                    for (int i = 0, count = player.clientSideSectionCount(); i < count; i++) {
+                        try {
+                            MCSection mcSection = new MCSection(BLOCK_LIST, BIOME_LIST);
+                            mcSection.readPacket(friendlyByteBuf);
+                            PalettedContainer<Integer> container = mcSection.blockStateContainer();
+                            Palette<Integer> palette = container.data().palette();
+                            if (palette.canRemap()) {
+                                palette.remap(PacketConsumers::remapMOD);
+                            } else {
+                                for (int j = 0; j < 4096; j++) {
+                                    int state = container.get(j);
+                                    int newState = remapMOD(state);
+                                    if (newState != state) {
+                                        container.set(j, newState);
+                                    }
+                                }
+                            }
+                            mcSection.writePacket(newBuf);
+                        } catch (Exception e) {
+                            break;
+                        }
+                    }
+                    Reflections.field$ClientboundLevelChunkPacketData$buffer.set(chunkData, newBuf.array());
+                } else {
+                    Object chunkData = FastNMS.INSTANCE.field$ClientboundLevelChunkWithLightPacket$chunkData(packet);
+                    byte[] buffer = FastNMS.INSTANCE.field$ClientboundLevelChunkPacketData$buffer(chunkData);
+                    ByteBuf byteBuf = Unpooled.copiedBuffer(buffer);
+                    FriendlyByteBuf friendlyByteBuf = new FriendlyByteBuf(byteBuf);
+                    FriendlyByteBuf newBuf = new FriendlyByteBuf(Unpooled.buffer());
+                    for (int i = 0, count = player.clientSideSectionCount(); i < count; i++) {
+                        try {
+                            MCSection mcSection = new MCSection(BLOCK_LIST, BIOME_LIST);
+                            mcSection.readPacket(friendlyByteBuf);
+                            PalettedContainer<Integer> container = mcSection.blockStateContainer();
+                            Palette<Integer> palette = container.data().palette();
+                            if (palette.canRemap()) {
+                                palette.remap(PacketConsumers::remap);
+                            } else {
+                                for (int j = 0; j < 4096; j++) {
+                                    int state = container.get(j);
+                                    int newState = remap(state);
+                                    if (newState != state) {
+                                        container.set(j, newState);
+                                    }
+                                }
+                            }
+                            mcSection.writePacket(newBuf);
+                        } catch (Exception e) {
+                            break;
+                        }
+                    }
+                    Reflections.field$ClientboundLevelChunkPacketData$buffer.set(chunkData, newBuf.array());
+                }
+                buf.clear();
+                buf.writeVarInt(event.packetID());
+                FastNMS.INSTANCE.method$ClientboundLevelChunkWithLightPacket$write(packet, buf);
+                event.setChanged(true);
+                return;
+            }
+            // 这里是正片
             int chunkX = buf.readInt();
             int chunkZ = buf.readInt();
             // ClientboundLevelChunkPacketData
diff --git a/gradle.properties b/gradle.properties
index 4e5adffd8..dd0c9633f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -50,7 +50,7 @@ byte_buddy_version=1.17.5
 ahocorasick_version=0.6.3
 snake_yaml_version=2.4
 anti_grief_version=0.15
-nms_helper_version=0.61.9
+nms_helper_version=0.62
 reactive_streams_version=1.0.4
 amazon_awssdk_version=2.31.23
 amazon_awssdk_eventstream_version=1.0.1