219 lines
10 KiB
Java
219 lines
10 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2023 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_20_5to1_20_3.rewriter;
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import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
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import com.github.steveice10.opennbt.tag.builtin.ListTag;
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import com.github.steveice10.opennbt.tag.builtin.NumberTag;
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import com.github.steveice10.opennbt.tag.builtin.StringTag;
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import com.github.steveice10.opennbt.tag.builtin.Tag;
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import com.viaversion.viaversion.api.data.entity.DimensionData;
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import com.viaversion.viaversion.api.minecraft.RegistryEntry;
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import com.viaversion.viaversion.api.minecraft.entities.EntityType;
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import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_20_5;
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import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
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import com.viaversion.viaversion.api.protocol.remapper.PacketHandlers;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.api.type.types.version.Types1_20_3;
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import com.viaversion.viaversion.api.type.types.version.Types1_20_5;
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import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.packet.ClientboundConfigurationPackets1_20_3;
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import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.packet.ClientboundPacket1_20_3;
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import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.packet.ClientboundPackets1_20_3;
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import com.viaversion.viaversion.protocols.protocol1_20_5to1_20_3.Protocol1_20_5To1_20_3;
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import com.viaversion.viaversion.protocols.protocol1_20_5to1_20_3.data.AttributeMappings;
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import com.viaversion.viaversion.protocols.protocol1_20_5to1_20_3.packet.ClientboundConfigurationPackets1_20_5;
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import com.viaversion.viaversion.rewriter.EntityRewriter;
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import com.viaversion.viaversion.util.Key;
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import java.util.Arrays;
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import java.util.Map;
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import java.util.UUID;
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public final class EntityPacketRewriter1_20_5 extends EntityRewriter<ClientboundPacket1_20_3, Protocol1_20_5To1_20_3> {
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public EntityPacketRewriter1_20_5(final Protocol1_20_5To1_20_3 protocol) {
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super(protocol);
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}
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@Override
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public void registerPackets() {
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registerTrackerWithData1_19(ClientboundPackets1_20_3.SPAWN_ENTITY, EntityTypes1_20_5.FALLING_BLOCK);
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registerMetadataRewriter(ClientboundPackets1_20_3.ENTITY_METADATA, Types1_20_3.METADATA_LIST, Types1_20_5.METADATA_LIST);
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registerRemoveEntities(ClientboundPackets1_20_3.REMOVE_ENTITIES);
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protocol.registerClientbound(ClientboundConfigurationPackets1_20_3.REGISTRY_DATA, wrapper -> {
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final CompoundTag registryData = wrapper.read(Type.COMPOUND_TAG);
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cacheDimensionData(wrapper.user(), registryData);
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trackBiomeSize(wrapper.user(), registryData);
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for (final Map.Entry<String, Tag> entry : registryData.entrySet()) {
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final CompoundTag entryTag = (CompoundTag) entry.getValue();
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final StringTag typeTag = entryTag.get("type");
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final ListTag valueTag = entryTag.get("value");
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RegistryEntry[] registryEntries = new RegistryEntry[valueTag.size()];
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boolean requiresDummyValues = false;
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int entriesLength = registryEntries.length;
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for (final Tag tag : valueTag) {
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final CompoundTag compoundTag = (CompoundTag) tag;
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final StringTag nameTag = compoundTag.get("name");
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final int id = ((NumberTag) compoundTag.get("id")).asInt();
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entriesLength = Math.max(entriesLength, id + 1);
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if (id >= registryEntries.length) {
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// It was previously possible to have arbitrary ids
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registryEntries = Arrays.copyOf(registryEntries, Math.max(registryEntries.length * 2, id + 1));
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requiresDummyValues = true;
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}
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registryEntries[id] = new RegistryEntry(nameTag.getValue(), compoundTag.get("element"));
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}
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if (requiresDummyValues) {
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// Truncate and replace null values
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if (registryEntries.length != entriesLength) {
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registryEntries = Arrays.copyOf(registryEntries, entriesLength);
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}
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replaceNullValues(registryEntries);
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}
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final PacketWrapper registryPacket = wrapper.create(ClientboundConfigurationPackets1_20_5.REGISTRY_DATA);
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registryPacket.write(Type.STRING, typeTag.getValue());
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registryPacket.write(Type.REGISTRY_ENTRY_ARRAY, registryEntries);
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registryPacket.send(Protocol1_20_5To1_20_3.class);
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}
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wrapper.cancel();
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});
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protocol.registerClientbound(ClientboundPackets1_20_3.JOIN_GAME, new PacketHandlers() {
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@Override
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public void register() {
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map(Type.INT); // Entity ID
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map(Type.BOOLEAN); // Hardcore
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map(Type.STRING_ARRAY); // World List
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map(Type.VAR_INT); // Max players
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map(Type.VAR_INT); // View distance
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map(Type.VAR_INT); // Simulation distance
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map(Type.BOOLEAN); // Reduced debug info
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map(Type.BOOLEAN); // Show death screen
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map(Type.BOOLEAN); // Limited crafting
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handler(wrapper -> {
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final String dimensionKey = wrapper.read(Type.STRING);
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final DimensionData data = tracker(wrapper.user()).dimensionData(dimensionKey);
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wrapper.write(Type.VAR_INT, data.id());
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});
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map(Type.STRING); // World
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map(Type.LONG); // Seed
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map(Type.BYTE); // Gamemode
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map(Type.BYTE); // Previous gamemode
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map(Type.BOOLEAN); // Debug
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map(Type.BOOLEAN); // Flat
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map(Type.OPTIONAL_GLOBAL_POSITION); // Last death location
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create(Type.BOOLEAN, false); // Enforces secure chat - moved from server data (which is unfortunately sent a while after this)
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handler(worldDataTrackerHandlerByKey1_20_5(3)); // Tracks world height and name for chunk data and entity (un)tracking
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}
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});
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protocol.registerClientbound(ClientboundPackets1_20_3.RESPAWN, wrapper -> {
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final String dimensionKey = wrapper.read(Type.STRING);
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final DimensionData data = tracker(wrapper.user()).dimensionData(dimensionKey);
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wrapper.write(Type.VAR_INT, data.id());
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wrapper.passthrough(Type.STRING); // World
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worldDataTrackerHandlerByKey1_20_5(0).handle(wrapper); // Tracks world height and name for chunk data and entity (un)tracking
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});
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protocol.registerClientbound(ClientboundPackets1_20_3.ENTITY_EFFECT, wrapper -> {
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wrapper.passthrough(Type.VAR_INT); // Entity ID
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wrapper.passthrough(Type.VAR_INT); // Effect ID
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wrapper.passthrough(Type.BYTE); // Amplifier
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wrapper.passthrough(Type.VAR_INT); // Duration
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wrapper.passthrough(Type.BYTE); // Flags
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wrapper.read(Type.OPTIONAL_COMPOUND_TAG); // Remove factor data
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});
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protocol.registerClientbound(ClientboundPackets1_20_3.ENTITY_PROPERTIES, wrapper -> {
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wrapper.passthrough(Type.VAR_INT); // Entity ID
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final int size = wrapper.passthrough(Type.VAR_INT);
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for (int i = 0; i < size; i++) {
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// From a string to a registry int ID
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final String attributeIdentifier = Key.stripMinecraftNamespace(wrapper.read(Type.STRING));
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final int id = AttributeMappings.id(attributeIdentifier);
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wrapper.write(Type.VAR_INT, protocol.getMappingData().getNewAttributeId(id));
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wrapper.passthrough(Type.DOUBLE); // Base
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final int modifierSize = wrapper.passthrough(Type.VAR_INT);
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for (int j = 0; j < modifierSize; j++) {
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wrapper.passthrough(Type.UUID); // ID
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wrapper.passthrough(Type.DOUBLE); // Amount
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wrapper.passthrough(Type.BYTE); // Operation
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}
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}
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});
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}
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private void replaceNullValues(final RegistryEntry[] entries) {
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// Find the first non-null entry and fill the array with dummy values where needed (which is easier than remapping them to different ids in a new, smaller array)
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RegistryEntry first = null;
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for (final RegistryEntry registryEntry : entries) {
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if (registryEntry != null) {
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first = registryEntry;
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break;
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}
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}
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for (int i = 0; i < entries.length; i++) {
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if (entries[i] == null) {
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entries[i] = first.withKey(UUID.randomUUID().toString());
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}
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}
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}
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@Override
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protected void registerRewrites() {
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filter().mapMetaType(typeId -> {
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int id = typeId;
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if (id >= Types1_20_5.META_TYPES.armadilloState.typeId()) {
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id++;
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}
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return Types1_20_5.META_TYPES.byId(id);
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});
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registerMetaTypeHandler(
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Types1_20_5.META_TYPES.itemType,
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Types1_20_5.META_TYPES.blockStateType,
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Types1_20_5.META_TYPES.optionalBlockStateType,
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Types1_20_5.META_TYPES.particleType
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);
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filter().type(EntityTypes1_20_5.LLAMA).removeIndex(20); // Carpet color
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filter().type(EntityTypes1_20_5.MINECART_ABSTRACT).index(11).handler((event, meta) -> {
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final int blockState = meta.value();
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meta.setValue(protocol.getMappingData().getNewBlockStateId(blockState));
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});
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}
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@Override
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public void onMappingDataLoaded() {
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mapTypes();
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}
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@Override
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public EntityType typeFromId(final int type) {
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return EntityTypes1_20_5.getTypeFromId(type);
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}
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} |