ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/protocol1_12to1_11_1/Protocol1_12To1_11_1.java

/*
 * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
 * Copyright (C) 2016-2024 ViaVersion and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.viaversion.viaversion.protocols.protocol1_12to1_11_1;

import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
import com.github.steveice10.opennbt.tag.builtin.IntTag;
import com.github.steveice10.opennbt.tag.builtin.StringTag;
import com.google.gson.JsonElement;
import com.viaversion.viaversion.api.Via;
import com.viaversion.viaversion.api.connection.UserConnection;
import com.viaversion.viaversion.api.minecraft.ClientWorld;
import com.viaversion.viaversion.api.minecraft.chunks.Chunk;
import com.viaversion.viaversion.api.minecraft.chunks.ChunkSection;
import com.viaversion.viaversion.api.minecraft.chunks.DataPalette;
import com.viaversion.viaversion.api.minecraft.chunks.PaletteType;
import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_12;
import com.viaversion.viaversion.api.platform.providers.ViaProviders;
import com.viaversion.viaversion.api.protocol.AbstractProtocol;
import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
import com.viaversion.viaversion.api.type.Type;
import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_9_3;
import com.viaversion.viaversion.api.type.types.version.Types1_12;
import com.viaversion.viaversion.data.entity.EntityTrackerBase;
import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.metadata.MetadataRewriter1_12To1_11_1;
import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.packets.InventoryPackets;
import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.providers.InventoryQuickMoveProvider;
import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.rewriter.ChatItemRewriter;
import com.viaversion.viaversion.protocols.protocol1_12to1_11_1.rewriter.TranslateRewriter;
import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.ClientboundPackets1_13;
import com.viaversion.viaversion.protocols.protocol1_13to1_12_2.Protocol1_13To1_12_2;
import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ClientboundPackets1_9_3;
import com.viaversion.viaversion.protocols.protocol1_9_3to1_9_1_2.ServerboundPackets1_9_3;
import com.viaversion.viaversion.protocols.protocol1_9to1_8.Protocol1_9To1_8;
import com.viaversion.viaversion.rewriter.SoundRewriter;
import java.util.logging.Level;

public class Protocol1_12To1_11_1 extends AbstractProtocol<ClientboundPackets1_9_3, ClientboundPackets1_12, ServerboundPackets1_9_3, ServerboundPackets1_12> {

    private final MetadataRewriter1_12To1_11_1 metadataRewriter = new MetadataRewriter1_12To1_11_1(this);
    private final InventoryPackets itemRewriter = new InventoryPackets(this);

    public Protocol1_12To1_11_1() {
        super(ClientboundPackets1_9_3.class, ClientboundPackets1_12.class, ServerboundPackets1_9_3.class, ServerboundPackets1_12.class);
    }

    @Override
    protected void registerPackets() {
        super.registerPackets();

        registerClientbound(ClientboundPackets1_9_3.SPAWN_ENTITY, new PacketHandlers() {
            @Override
            public void register() {
                map(Type.VAR_INT); // 0 - Entity id
                map(Type.UUID); // 1 - UUID
                map(Type.BYTE); // 2 - Type

                // Track Entity
                handler(metadataRewriter.objectTrackerHandler());
            }
        });

        registerClientbound(ClientboundPackets1_9_3.SPAWN_MOB, new PacketHandlers() {
            @Override
            public void register() {
                map(Type.VAR_INT); // 0 - Entity ID
                map(Type.UUID); // 1 - Entity UUID
                map(Type.VAR_INT); // 2 - Entity Type
                map(Type.DOUBLE); // 3 - X
                map(Type.DOUBLE); // 4 - Y
                map(Type.DOUBLE); // 5 - Z
                map(Type.BYTE); // 6 - Yaw
                map(Type.BYTE); // 7 - Pitch
                map(Type.BYTE); // 8 - Head Pitch
                map(Type.SHORT); // 9 - Velocity X
                map(Type.SHORT); // 10 - Velocity Y
                map(Type.SHORT); // 11 - Velocity Z
                map(Types1_12.METADATA_LIST); // 12 - Metadata

                // Track mob and rewrite metadata
                handler(metadataRewriter.trackerAndRewriterHandler(Types1_12.METADATA_LIST));
            }
        });

        registerClientbound(ClientboundPackets1_9_3.CHAT_MESSAGE, wrapper -> {
            if (!Via.getConfig().is1_12NBTArrayFix()) return;
            try {
                JsonElement obj = Protocol1_9To1_8.FIX_JSON.transform(null, wrapper.passthrough(Type.COMPONENT).toString());
                TranslateRewriter.toClient(obj);
                ChatItemRewriter.toClient(obj);

                wrapper.set(Type.COMPONENT, 0, obj);
            } catch (Exception e) {
                Via.getPlatform().getLogger().log(Level.WARNING, "Error converting 1.11.2 -> 1.12 chat item", e);
            }
        });

        registerClientbound(ClientboundPackets1_9_3.CHUNK_DATA, wrapper -> {
            ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);

            ChunkType1_9_3 type = ChunkType1_9_3.forEnvironment(clientWorld.getEnvironment());
            Chunk chunk = wrapper.passthrough(type);

            for (int s = 0; s < chunk.getSections().length; s++) {
                ChunkSection section = chunk.getSections()[s];
                if (section == null) continue;
                DataPalette blocks = section.palette(PaletteType.BLOCKS);

                for (int idx = 0; idx < ChunkSection.SIZE; idx++) {
                    int id = blocks.idAt(idx) >> 4;
                    // Is this a bed?
                    if (id != 26) continue;

                    //  NBT -> { color:14, x:132, y:64, z:222, id:"minecraft:bed" } (Debug output)
                    CompoundTag tag = new CompoundTag();
                    tag.put("color", new IntTag(14)); // Set color to red (Default in previous versions)
                    tag.put("x", new IntTag(ChunkSection.xFromIndex(idx) + (chunk.getX() << 4)));
                    tag.put("y", new IntTag(ChunkSection.yFromIndex(idx) + (s << 4)));
                    tag.put("z", new IntTag(ChunkSection.zFromIndex(idx) + (chunk.getZ() << 4)));
                    tag.put("id", new StringTag("minecraft:bed"));

                    // Add a fake block entity
                    chunk.getBlockEntities().add(tag);
                }
            }
        });

        metadataRewriter.registerRemoveEntities(ClientboundPackets1_9_3.DESTROY_ENTITIES);
        metadataRewriter.registerMetadataRewriter(ClientboundPackets1_9_3.ENTITY_METADATA, Types1_12.METADATA_LIST);

        registerClientbound(ClientboundPackets1_9_3.JOIN_GAME, new PacketHandlers() {
            @Override
            public void register() {
                map(Type.INT);
                map(Type.UNSIGNED_BYTE);
                map(Type.INT);
                handler(wrapper -> {
                    UserConnection user = wrapper.user();
                    ClientWorld clientChunks = user.get(ClientWorld.class);
                    int dimensionId = wrapper.get(Type.INT, 1);
                    clientChunks.setEnvironment(dimensionId);

                    // Reset recipes
                    if (user.getProtocolInfo().getProtocolVersion() >= ProtocolVersion.v1_13.getVersion()) {
                        wrapper.create(ClientboundPackets1_13.DECLARE_RECIPES, packetWrapper -> packetWrapper.write(Type.VAR_INT, 0))
                                .scheduleSend(Protocol1_13To1_12_2.class);
                    }
                });
            }
        });
        registerClientbound(ClientboundPackets1_9_3.RESPAWN, new PacketHandlers() {
            @Override
            public void register() {
                map(Type.INT);
                handler(wrapper -> {
                    ClientWorld clientWorld = wrapper.user().get(ClientWorld.class);
                    int dimensionId = wrapper.get(Type.INT, 0);
                    clientWorld.setEnvironment(dimensionId);
                });
            }
        });

        new SoundRewriter<>(this, this::getNewSoundId).registerSound(ClientboundPackets1_9_3.SOUND);


        // New packet at 0x01
        cancelServerbound(ServerboundPackets1_12.PREPARE_CRAFTING_GRID);

        // Client Settings (max length changed)
        registerServerbound(ServerboundPackets1_12.CLIENT_SETTINGS, new PacketHandlers() {
            @Override
            public void register() {
                map(Type.STRING); // 0 - Locale
                map(Type.BYTE); // 1 - view distance
                map(Type.VAR_INT); // 2 - chat mode
                map(Type.BOOLEAN); // 3 - chat colors
                map(Type.UNSIGNED_BYTE); // 4 - chat flags
                map(Type.VAR_INT); // 5 - main hand
                handler(wrapper -> {
                    // As part of the fix for MC-111054, the max length of
                    // the locale was raised to 16 (from 7), and the client
                    // now makes sure that resource packs have names in that
                    // length.  However, for older servers, it is still 7,
                    // and thus the server will reject it (and the client
                    // won't know that the pack's invalid).
                    // The fix is to just silently lower the length.  The
                    // server doesn't actually use the locale anywhere, so
                    // this is fine.
                    String locale = wrapper.get(Type.STRING, 0);
                    if (locale.length() > 7) {
                        wrapper.set(Type.STRING, 0, locale.substring(0, 7));
                    }
                });
            }
        });

        // New packet at 0x17
        cancelServerbound(ServerboundPackets1_12.RECIPE_BOOK_DATA);

        // New packet 0x19
        cancelServerbound(ServerboundPackets1_12.ADVANCEMENT_TAB);
    }

    private int getNewSoundId(int id) {
        int newId = id;
        if (id >= 26) // End Portal Sounds
            newId += 2;
        if (id >= 70) // New Block Notes
            newId += 4;
        if (id >= 74) // New Block Note 2
            newId += 1;
        if (id >= 143) // Boat Sounds
            newId += 3;
        if (id >= 185) // Endereye death
            newId += 1;
        if (id >= 263) // Illagers
            newId += 7;
        if (id >= 301) // Parrots
            newId += 33;
        if (id >= 317) // Player Sounds
            newId += 2;
        if (id >= 491) // UI toast sound
            newId += 3;
        return newId;
    }

    @Override
    public void register(ViaProviders providers) {
        providers.register(InventoryQuickMoveProvider.class, new InventoryQuickMoveProvider());
    }

    @Override
    public void init(UserConnection userConnection) {
        userConnection.addEntityTracker(this.getClass(), new EntityTrackerBase(userConnection, EntityTypes1_12.EntityType.PLAYER));
        if (!userConnection.has(ClientWorld.class)) {
            userConnection.put(new ClientWorld());
        }
    }

    @Override
    public MetadataRewriter1_12To1_11_1 getEntityRewriter() {
        return metadataRewriter;
    }

    @Override
    public InventoryPackets getItemRewriter() {
        return itemRewriter;
    }
}