243 lines
12 KiB
Java
243 lines
12 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_17to1_16_4.packets;
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import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
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import com.github.steveice10.opennbt.tag.builtin.IntTag;
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import com.github.steveice10.opennbt.tag.builtin.ListTag;
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import com.github.steveice10.opennbt.tag.builtin.Tag;
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import com.viaversion.viaversion.api.connection.UserConnection;
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import com.viaversion.viaversion.api.minecraft.BlockChangeRecord;
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import com.viaversion.viaversion.api.minecraft.BlockChangeRecord1_16_2;
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import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
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import com.viaversion.viaversion.api.minecraft.chunks.ChunkSection;
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import com.viaversion.viaversion.api.minecraft.entities.Entity1_17Types;
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import com.viaversion.viaversion.api.protocol.packet.ClientboundPacketType;
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import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
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import com.viaversion.viaversion.api.protocol.remapper.PacketRemapper;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.protocols.protocol1_16_2to1_16_1.ClientboundPackets1_16_2;
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import com.viaversion.viaversion.protocols.protocol1_16_2to1_16_1.types.Chunk1_16_2Type;
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import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.ClientboundPackets1_17;
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import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.Protocol1_17To1_16_4;
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import com.viaversion.viaversion.protocols.protocol1_17to1_16_4.types.Chunk1_17Type;
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import com.viaversion.viaversion.rewriter.BlockRewriter;
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import java.util.ArrayList;
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import java.util.BitSet;
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import java.util.List;
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public class WorldPackets {
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public static void register(Protocol1_17To1_16_4 protocol) {
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BlockRewriter blockRewriter = new BlockRewriter(protocol, Type.POSITION1_14);
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blockRewriter.registerBlockAction(ClientboundPackets1_16_2.BLOCK_ACTION);
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blockRewriter.registerBlockChange(ClientboundPackets1_16_2.BLOCK_CHANGE);
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blockRewriter.registerVarLongMultiBlockChange(ClientboundPackets1_16_2.MULTI_BLOCK_CHANGE);
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blockRewriter.registerAcknowledgePlayerDigging(ClientboundPackets1_16_2.ACKNOWLEDGE_PLAYER_DIGGING);
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protocol.registerClientbound(ClientboundPackets1_16_2.WORLD_BORDER, 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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// Border packet actions have been split into individual packets (the content hasn't changed)
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int type = wrapper.read(Type.VAR_INT);
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ClientboundPacketType packetType;
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switch (type) {
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case 0:
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packetType = ClientboundPackets1_17.WORLD_BORDER_SIZE;
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break;
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case 1:
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packetType = ClientboundPackets1_17.WORLD_BORDER_LERP_SIZE;
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break;
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case 2:
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packetType = ClientboundPackets1_17.WORLD_BORDER_CENTER;
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break;
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case 3:
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packetType = ClientboundPackets1_17.WORLD_BORDER_INIT;
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break;
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case 4:
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packetType = ClientboundPackets1_17.WORLD_BORDER_WARNING_DELAY;
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break;
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case 5:
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packetType = ClientboundPackets1_17.WORLD_BORDER_WARNING_DISTANCE;
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break;
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default:
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throw new IllegalArgumentException("Invalid world border type received: " + type);
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}
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wrapper.setId(packetType.getId());
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_16_2.UPDATE_LIGHT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // x
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map(Type.VAR_INT); // y
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map(Type.BOOLEAN); // trust edges
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handler(wrapper -> {
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int skyLightMask = wrapper.read(Type.VAR_INT);
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int blockLightMask = wrapper.read(Type.VAR_INT);
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// Now all written as a representation of BitSets
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wrapper.write(Type.LONG_ARRAY_PRIMITIVE, toBitSetLongArray(skyLightMask)); // Sky light mask
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wrapper.write(Type.LONG_ARRAY_PRIMITIVE, toBitSetLongArray(blockLightMask)); // Block light mask
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wrapper.write(Type.LONG_ARRAY_PRIMITIVE, toBitSetLongArray(wrapper.read(Type.VAR_INT))); // Empty sky light mask
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wrapper.write(Type.LONG_ARRAY_PRIMITIVE, toBitSetLongArray(wrapper.read(Type.VAR_INT))); // Empty block light mask
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writeLightArrays(wrapper, skyLightMask);
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writeLightArrays(wrapper, blockLightMask);
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});
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}
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private void writeLightArrays(PacketWrapper wrapper, int bitMask) throws Exception {
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List<byte[]> light = new ArrayList<>();
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for (int i = 0; i <= 17; i++) {
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if (isSet(bitMask, i)) {
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light.add(wrapper.read(Type.BYTE_ARRAY_PRIMITIVE));
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}
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}
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// Now needs the length of the bytearray-array
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wrapper.write(Type.VAR_INT, light.size());
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for (byte[] bytes : light) {
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wrapper.write(Type.BYTE_ARRAY_PRIMITIVE, bytes);
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}
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}
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private long[] toBitSetLongArray(int bitmask) {
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return new long[]{bitmask};
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}
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private boolean isSet(int mask, int i) {
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return (mask & (1 << i)) != 0;
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}
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});
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protocol.registerClientbound(ClientboundPackets1_16_2.CHUNK_DATA, new PacketRemapper() {
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@Override
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public void registerMap() {
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handler(wrapper -> {
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Chunk chunk = wrapper.read(new Chunk1_16_2Type());
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if (!chunk.isFullChunk()) {
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// All chunks are full chunk packets now (1.16 already stopped sending non-full chunks)
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// Construct multi block change packets instead
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// Height map updates are lost (unless we want to fully cache and resend entire chunks)
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// Block entities are always empty for non-full chunks in Vanilla
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writeMultiBlockChangePacket(wrapper, chunk);
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wrapper.cancel();
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return;
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}
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// Normal full chunk writing
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wrapper.write(new Chunk1_17Type(chunk.getSections().length), chunk);
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// 1.17 uses a bitset for the mask
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chunk.setChunkMask(BitSet.valueOf(new long[]{chunk.getBitmask()}));
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for (int s = 0; s < chunk.getSections().length; s++) {
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ChunkSection section = chunk.getSections()[s];
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if (section == null) continue;
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for (int i = 0; i < section.getPaletteSize(); i++) {
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int old = section.getPaletteEntry(i);
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section.setPaletteEntry(i, protocol.getMappingData().getNewBlockStateId(old));
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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_16_2.JOIN_GAME, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.INT); // Entity ID
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map(Type.BOOLEAN); // Hardcore
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map(Type.UNSIGNED_BYTE); // Gamemode
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map(Type.BYTE); // Previous Gamemode
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map(Type.STRING_ARRAY); // World List
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map(Type.NBT); // Registry
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map(Type.NBT); // Current dimension
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handler(wrapper -> {
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// Add new dimension fields
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CompoundTag dimensionRegistry = wrapper.get(Type.NBT, 0).get("minecraft:dimension_type");
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ListTag dimensions = dimensionRegistry.get("value");
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for (Tag dimension : dimensions) {
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CompoundTag dimensionCompound = ((CompoundTag) dimension).get("element");
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addNewDimensionData(dimensionCompound);
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}
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CompoundTag currentDimensionTag = wrapper.get(Type.NBT, 1);
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addNewDimensionData(currentDimensionTag);
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UserConnection user = wrapper.user();
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user.getEntityTracker(Protocol1_17To1_16_4.class).addEntity(wrapper.get(Type.INT, 0), Entity1_17Types.PLAYER);
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_16_2.RESPAWN, new PacketRemapper() {
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@Override
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public void registerMap() {
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handler(wrapper -> {
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CompoundTag dimensionData = wrapper.passthrough(Type.NBT);
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addNewDimensionData(dimensionData);
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});
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}
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});
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blockRewriter.registerEffect(ClientboundPackets1_16_2.EFFECT, 1010, 2001);
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}
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private static void writeMultiBlockChangePacket(PacketWrapper wrapper, Chunk chunk) throws Exception {
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long chunkPosition = (chunk.getX() & 0x3FFFFFL) << 42;
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chunkPosition |= (chunk.getZ() & 0x3FFFFFL) << 20;
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ChunkSection[] sections = chunk.getSections();
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for (int chunkY = 0; chunkY < sections.length; chunkY++) {
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ChunkSection section = sections[chunkY];
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if (section == null) continue;
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PacketWrapper blockChangePacket = wrapper.create(ClientboundPackets1_17.MULTI_BLOCK_CHANGE);
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blockChangePacket.write(Type.LONG, chunkPosition | (chunkY & 0xFFFFFL));
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blockChangePacket.write(Type.BOOLEAN, true); // Suppress light updates
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//TODO this can be optimized
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BlockChangeRecord[] blockChangeRecords = new BlockChangeRecord[4096];
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int j = 0;
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for (int x = 0; x < 16; x++) {
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for (int y = 0; y < 16; y++) {
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for (int z = 0; z < 16; z++) {
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int blockStateId = Protocol1_17To1_16_4.MAPPINGS.getNewBlockStateId(section.getFlatBlock(x, y, z));
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blockChangeRecords[j++] = new BlockChangeRecord1_16_2(x, y, z, blockStateId);
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}
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}
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}
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blockChangePacket.write(Type.VAR_LONG_BLOCK_CHANGE_RECORD_ARRAY, blockChangeRecords);
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blockChangePacket.send(Protocol1_17To1_16_4.class, true, true);
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}
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}
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private static void addNewDimensionData(CompoundTag tag) {
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tag.put("min_y", new IntTag(0));
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tag.put("height", new IntTag(256));
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}
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}
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