486 lines
23 KiB
Java
486 lines
23 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 ViaVersion and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.protocols.protocol1_9to1_8.packets;
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import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
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import com.github.steveice10.opennbt.tag.builtin.StringTag;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.api.minecraft.Position;
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import com.viaversion.viaversion.api.minecraft.chunks.Chunk1_8;
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import com.viaversion.viaversion.api.minecraft.item.Item;
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import com.viaversion.viaversion.api.protocol.Protocol;
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import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
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import com.viaversion.viaversion.api.protocol.remapper.PacketHandler;
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import com.viaversion.viaversion.api.protocol.remapper.PacketRemapper;
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import com.viaversion.viaversion.api.protocol.remapper.ValueCreator;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.api.type.types.CustomByteType;
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import com.viaversion.viaversion.protocols.protocol1_8.ClientboundPackets1_8;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.ClientboundPackets1_9;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.ItemRewriter;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.Protocol1_9To1_8;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.ServerboundPackets1_9;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.providers.CommandBlockProvider;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.sounds.Effect;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.sounds.SoundEffect;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.storage.ClientChunks;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.storage.EntityTracker1_9;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.types.Chunk1_9to1_8Type;
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import io.netty.buffer.ByteBuf;
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import org.checkerframework.checker.nullness.qual.Nullable;
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import java.util.Optional;
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public class WorldPackets {
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public static void register(Protocol protocol) {
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protocol.registerClientbound(ClientboundPackets1_8.UPDATE_SIGN, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.POSITION); // 0 - Sign Position
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 1 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 2 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 3 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 4 - Sign Line (json)
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.EFFECT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.INT); // 0 - Effect ID
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map(Type.POSITION); // 1 - Position
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map(Type.INT); // 2 - Data
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map(Type.BOOLEAN); // 3 - Disable relative volume
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int id = wrapper.get(Type.INT, 0);
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id = Effect.getNewId(id);
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wrapper.set(Type.INT, 0, id);
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}
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});
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// Rewrite potion effect as it changed to use a dynamic registry
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int id = wrapper.get(Type.INT, 0);
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if (id == 2002) {
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int data = wrapper.get(Type.INT, 1);
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int newData = ItemRewriter.getNewEffectID(data);
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wrapper.set(Type.INT, 1, newData);
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}
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.NAMED_SOUND, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.STRING); // 0 - Sound Name
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// 1 - Sound Category ID
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// Everything else get's written through
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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String name = wrapper.get(Type.STRING, 0);
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SoundEffect effect = SoundEffect.getByName(name);
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int catid = 0;
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String newname = name;
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if (effect != null) {
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catid = effect.getCategory().getId();
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newname = effect.getNewName();
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}
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wrapper.set(Type.STRING, 0, newname);
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wrapper.write(Type.VAR_INT, catid); // Write Category ID
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if (effect != null && effect.isBreaksound()) {
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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int x = wrapper.passthrough(Type.INT); //Position X
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int y = wrapper.passthrough(Type.INT); //Position Y
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int z = wrapper.passthrough(Type.INT); //Position Z
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if (tracker.interactedBlockRecently((int) Math.floor(x / 8.0), (int) Math.floor(y / 8.0), (int) Math.floor(z / 8.0))) {
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wrapper.cancel();
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}
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}
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.CHUNK_DATA, new PacketRemapper() {
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@Override
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public void registerMap() {
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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ClientChunks clientChunks = wrapper.user().get(ClientChunks.class);
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Chunk1_9to1_8Type type = new Chunk1_9to1_8Type(clientChunks);
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Chunk1_8 chunk = (Chunk1_8) wrapper.read(type);
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if (chunk.isUnloadPacket()) {
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wrapper.setId(ClientboundPackets1_9.UNLOAD_CHUNK);
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wrapper.write(Type.INT, chunk.getX());
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wrapper.write(Type.INT, chunk.getZ());
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// Remove commandBlocks on chunk unload
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CommandBlockProvider provider = Via.getManager().getProviders().get(CommandBlockProvider.class);
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provider.unloadChunk(wrapper.user(), chunk.getX(), chunk.getZ());
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} else {
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wrapper.write(type, chunk);
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// eat any other data (Usually happens with unload packets)
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}
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wrapper.read(Type.REMAINING_BYTES);
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.MAP_BULK_CHUNK, null, new PacketRemapper() {
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@Override
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public void registerMap() {
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handler(wrapper -> {
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wrapper.cancel(); // Cancel the packet from being sent
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boolean skyLight = wrapper.read(Type.BOOLEAN);
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int count = wrapper.read(Type.VAR_INT);
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ChunkBulkSection[] chunks = new ChunkBulkSection[count];
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for (int i = 0; i < count; i++) {
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chunks[i] = new ChunkBulkSection(wrapper, skyLight);
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}
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ClientChunks clientChunks = wrapper.user().get(ClientChunks.class);
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for (ChunkBulkSection chunk : chunks) {
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// Data is at the end
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CustomByteType customByteType = new CustomByteType(chunk.getLength());
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chunk.setData(wrapper.read(customByteType));
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clientChunks.getBulkChunks().add(ClientChunks.toLong(chunk.getX(), chunk.getZ())); // Store for later
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// Construct chunk packet
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ByteBuf buffer = null;
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try {
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buffer = wrapper.user().getChannel().alloc().buffer();
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Type.INT.write(buffer, chunk.getX());
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Type.INT.write(buffer, chunk.getZ());
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Type.BOOLEAN.write(buffer, true); // Always ground-up
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Type.UNSIGNED_SHORT.write(buffer, chunk.getBitMask());
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Type.VAR_INT.writePrimitive(buffer, chunk.getLength());
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customByteType.write(buffer, chunk.getData());
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// Send through this protocol again
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PacketWrapper chunkPacket = PacketWrapper.create(ClientboundPackets1_8.CHUNK_DATA, buffer, wrapper.user());
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chunkPacket.send(Protocol1_9To1_8.class, false);
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} finally {
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if (buffer != null) {
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buffer.release();
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}
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}
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.BLOCK_ENTITY_DATA, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.POSITION); // 0 - Block Position
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map(Type.UNSIGNED_BYTE); // 1 - Action
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map(Type.NBT); // 2 - NBT (Might not be present)
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int action = wrapper.get(Type.UNSIGNED_BYTE, 0);
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if (action == 1) { // Update Spawner
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CompoundTag tag = wrapper.get(Type.NBT, 0);
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if (tag != null) {
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if (tag.contains("EntityId")) {
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String entity = (String) tag.get("EntityId").getValue();
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CompoundTag spawn = new CompoundTag();
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spawn.put("id", new StringTag(entity));
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tag.put("SpawnData", spawn);
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} else { // EntityID does not exist
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CompoundTag spawn = new CompoundTag();
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spawn.put("id", new StringTag("AreaEffectCloud")); //Make spawners show up as empty when no EntityId is given.
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tag.put("SpawnData", spawn);
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}
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}
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}
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if (action == 2) { // Update Command Block
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CommandBlockProvider provider = Via.getManager().getProviders().get(CommandBlockProvider.class);
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provider.addOrUpdateBlock(wrapper.user(), wrapper.get(Type.POSITION, 0), wrapper.get(Type.NBT, 0));
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// To prevent window issues don't send updates
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wrapper.cancel();
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}
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.BLOCK_CHANGE, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.POSITION);
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map(Type.VAR_INT);
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}
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});
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/* Incoming Packets */
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protocol.registerServerbound(ServerboundPackets1_9.UPDATE_SIGN, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.POSITION); // 0 - Sign Position
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 1 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 2 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 3 - Sign Line (json)
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map(Type.STRING, Protocol1_9To1_8.FIX_JSON); // 4 - Sign Line (json)
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}
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});
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protocol.registerServerbound(ServerboundPackets1_9.PLAYER_DIGGING, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT, Type.UNSIGNED_BYTE); // 0 - Status
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map(Type.POSITION); // 1 - Position
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map(Type.BYTE); // 2 - Face
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int status = wrapper.get(Type.UNSIGNED_BYTE, 0);
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if (status == 6)
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wrapper.cancel();
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}
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});
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// Blocking
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int status = wrapper.get(Type.UNSIGNED_BYTE, 0);
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if (status == 5 || status == 4 || status == 3) {
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EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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if (entityTracker.isBlocking()) {
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entityTracker.setBlocking(false);
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if (!Via.getConfig().isShowShieldWhenSwordInHand()) {
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entityTracker.setSecondHand(null);
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}
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}
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}
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}
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});
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}
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});
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protocol.registerServerbound(ServerboundPackets1_9.USE_ITEM, null, new PacketRemapper() {
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@Override
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public void registerMap() {
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int hand = wrapper.read(Type.VAR_INT);
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// Wipe the input buffer
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wrapper.clearInputBuffer();
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// First set this packet ID to Block placement
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wrapper.setId(0x08);
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wrapper.write(Type.POSITION, new Position(-1, (short) -1, -1));
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wrapper.write(Type.UNSIGNED_BYTE, (short) 255);
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// Write item in hand
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Item item = Protocol1_9To1_8.getHandItem(wrapper.user());
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// Blocking patch
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if (Via.getConfig().isShieldBlocking()) {
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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// Check if the shield is already there or if we have to give it here
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boolean showShieldWhenSwordInHand = Via.getConfig().isShowShieldWhenSwordInHand();
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// Method to identify the sword in hand
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boolean isSword = showShieldWhenSwordInHand ? tracker.hasSwordInHand()
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: item != null && Protocol1_9To1_8.isSword(item.getIdentifier());
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if (isSword) {
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if (hand == 0) {
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if (!tracker.isBlocking()) {
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tracker.setBlocking(true);
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// Check if the shield is already in the offhand
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if (!showShieldWhenSwordInHand && tracker.getItemInSecondHand() == null) {
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// Set shield in offhand when interacting with main hand
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Item shield = new Item(442, (byte) 1, (short) 0, null);
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tracker.setSecondHand(shield);
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}
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}
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}
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// Use the main hand to trigger the blocking
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boolean blockUsingMainHand = Via.getConfig().isNoDelayShieldBlocking()
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&& !showShieldWhenSwordInHand;
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if (blockUsingMainHand && hand == 1 || !blockUsingMainHand && hand == 0) {
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wrapper.cancel();
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}
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} else {
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if (!showShieldWhenSwordInHand) {
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// Remove the shield from the offhand
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tracker.setSecondHand(null);
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}
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tracker.setBlocking(false);
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}
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}
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wrapper.write(Type.ITEM, item);
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wrapper.write(Type.UNSIGNED_BYTE, (short) 0);
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wrapper.write(Type.UNSIGNED_BYTE, (short) 0);
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wrapper.write(Type.UNSIGNED_BYTE, (short) 0);
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}
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});
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}
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});
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protocol.registerServerbound(ServerboundPackets1_9.PLAYER_BLOCK_PLACEMENT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.POSITION); // 0 - Position
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map(Type.VAR_INT, Type.UNSIGNED_BYTE); // 1 - Block Face
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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final int hand = wrapper.read(Type.VAR_INT); // 2 - Hand
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if (hand != 0) wrapper.cancel();
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}
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});
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create(new ValueCreator() {
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@Override
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public void write(PacketWrapper wrapper) throws Exception {
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Item item = Protocol1_9To1_8.getHandItem(wrapper.user());
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wrapper.write(Type.ITEM, item); // 3 - Item
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}
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});
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map(Type.UNSIGNED_BYTE); // 4 - X
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map(Type.UNSIGNED_BYTE); // 5 - Y
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map(Type.UNSIGNED_BYTE); // 6 - Z
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//Register block place to fix sounds
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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int face = wrapper.get(Type.UNSIGNED_BYTE, 0);
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if (face == 255)
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return;
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Position p = wrapper.get(Type.POSITION, 0);
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int x = p.getX();
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int y = p.getY();
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int z = p.getZ();
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switch (face) {
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case 0:
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y--;
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break;
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case 1:
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y++;
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break;
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case 2:
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z--;
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break;
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case 3:
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z++;
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break;
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case 4:
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x--;
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break;
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case 5:
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x++;
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break;
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}
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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tracker.addBlockInteraction(new Position(x, y, z));
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}
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});
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// Handle CommandBlocks
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handler(new PacketHandler() {
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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CommandBlockProvider provider = Via.getManager().getProviders().get(CommandBlockProvider.class);
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Position pos = wrapper.get(Type.POSITION, 0);
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Optional<CompoundTag> tag = provider.get(wrapper.user(), pos);
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// Send the Update Block Entity packet if present
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if (tag.isPresent()) {
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PacketWrapper updateBlockEntity = PacketWrapper.create(0x09, null, wrapper.user());
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updateBlockEntity.write(Type.POSITION, pos);
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updateBlockEntity.write(Type.UNSIGNED_BYTE, (short) 2);
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updateBlockEntity.write(Type.NBT, tag.get());
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updateBlockEntity.send(Protocol1_9To1_8.class);
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}
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}
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});
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}
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});
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}
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public static final class ChunkBulkSection {
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private final int x;
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private final int z;
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private final int bitMask;
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private final int length;
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private byte[] data;
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public ChunkBulkSection(PacketWrapper wrapper, boolean skylight) throws Exception {
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x = wrapper.read(Type.INT);
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z = wrapper.read(Type.INT);
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bitMask = wrapper.read(Type.UNSIGNED_SHORT);
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int bitCount = Integer.bitCount(bitMask);
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length = (bitCount * ((4096 * 2) + 2048)) + (skylight ? bitCount * 2048 : 0) + 256; // Thanks MCProtocolLib
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}
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public int getX() {
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return x;
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}
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public int getZ() {
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return z;
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}
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public int getBitMask() {
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return bitMask;
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}
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public int getLength() {
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return length;
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}
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public byte @Nullable [] getData() {
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return data;
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}
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public void setData(byte[] data) {
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this.data = data;
|
|
}
|
|
}
|
|
}
|