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162 changes: 162 additions & 0 deletions
162
...ava/com/viaversion/viabackwards/protocol/protocol1_20_4to1_20_2/Protocol1_20To1_20_2.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| /* | ||
| * This file is part of ViaBackwards - https://github.com/ViaVersion/ViaBackwards | ||
| * Copyright (C) 2023 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.viabackwards.protocol.protocol1_20_4to1_20_2; | ||
|
|
||
| import com.viaversion.viabackwards.api.BackwardsProtocol; | ||
| import com.viaversion.viabackwards.protocol.protocol1_20_4to1_20_2.rewriter.BlockItemPacketRewriter1_20_2; | ||
| import com.viaversion.viabackwards.protocol.protocol1_20_4to1_20_2.rewriter.EntityPacketRewriter1_20_2; | ||
| import com.viaversion.viabackwards.protocol.protocol1_20_4to1_20_2.storage.ConfigurationPacketStorage; | ||
| import com.viaversion.viaversion.api.Via; | ||
| import com.viaversion.viaversion.api.connection.UserConnection; | ||
| import com.viaversion.viaversion.api.minecraft.entities.Entity1_19_4Types; | ||
| import com.viaversion.viaversion.api.protocol.packet.Direction; | ||
| import com.viaversion.viaversion.api.protocol.packet.PacketWrapper; | ||
| import com.viaversion.viaversion.api.protocol.packet.State; | ||
| import com.viaversion.viaversion.api.rewriter.EntityRewriter; | ||
| import com.viaversion.viaversion.api.rewriter.ItemRewriter; | ||
| import com.viaversion.viaversion.api.type.Type; | ||
| import com.viaversion.viaversion.data.entity.EntityTrackerBase; | ||
| import com.viaversion.viaversion.exception.CancelException; | ||
| import com.viaversion.viaversion.libs.opennbt.tag.builtin.CompoundTag; | ||
| import com.viaversion.viaversion.protocols.base.ClientboundLoginPackets; | ||
| import com.viaversion.viaversion.protocols.base.ServerboundLoginPackets; | ||
| import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ClientboundPackets1_19_4; | ||
| import com.viaversion.viaversion.protocols.protocol1_19_4to1_19_3.ServerboundPackets1_19_4; | ||
| import com.viaversion.viaversion.protocols.protocol1_20_2to1_20.packet.ClientboundConfigurationPackets1_20_2; | ||
| import com.viaversion.viaversion.protocols.protocol1_20_2to1_20.packet.ClientboundPackets1_20_2; | ||
| import com.viaversion.viaversion.protocols.protocol1_20_2to1_20.packet.ServerboundConfigurationPackets1_20_2; | ||
| import com.viaversion.viaversion.protocols.protocol1_20_2to1_20.packet.ServerboundPackets1_20_2; | ||
| import java.util.UUID; | ||
|
|
||
| public final class Protocol1_20To1_20_2 extends BackwardsProtocol<ClientboundPackets1_20_2, ClientboundPackets1_19_4, ServerboundPackets1_20_2, ServerboundPackets1_19_4> { | ||
|
|
||
| private final EntityPacketRewriter1_20_2 entityPacketRewriter = new EntityPacketRewriter1_20_2(this); | ||
| private final BlockItemPacketRewriter1_20_2 itemPacketRewriter = new BlockItemPacketRewriter1_20_2(this); | ||
|
|
||
| public Protocol1_20To1_20_2() { | ||
| super(ClientboundPackets1_20_2.class, ClientboundPackets1_19_4.class, ServerboundPackets1_20_2.class, ServerboundPackets1_19_4.class); | ||
| } | ||
|
|
||
| @Override | ||
| protected void registerPackets() { | ||
| super.registerPackets(); | ||
| Via.getManager().debugHandler().setEnabled(true); | ||
|
|
||
| registerClientbound(ClientboundPackets1_20_2.SCOREBOARD_OBJECTIVE, wrapper -> { | ||
| final int slot = wrapper.read(Type.VAR_INT); | ||
| wrapper.write(Type.BYTE, (byte) slot); | ||
| }); | ||
|
|
||
| registerClientbound(State.LOGIN, ClientboundLoginPackets.GAME_PROFILE.getId(), ClientboundLoginPackets.GAME_PROFILE.getId(), wrapper -> { | ||
| final ServerboundLoginPackets ackPacket = ServerboundLoginPackets.LOGIN_ACKNOWLEDGED; | ||
| wrapper.create(ackPacket).sendToServer(Protocol1_20To1_20_2.class); | ||
|
|
||
| // We can't set the internal state to configuration here as protocols down the line will expect the state to be play | ||
| wrapper.user().put(new ConfigurationPacketStorage()); | ||
| System.out.println(wrapper.user().getProtocolInfo().getState()); | ||
| }); | ||
|
|
||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.FINISH_CONFIGURATION.getId(), ClientboundConfigurationPackets1_20_2.FINISH_CONFIGURATION.getId(), wrapper -> { | ||
| wrapper.cancel(); | ||
| wrapper.create(ServerboundConfigurationPackets1_20_2.FINISH_CONFIGURATION).sendToServer(Protocol1_20To1_20_2.class); | ||
| wrapper.user().getProtocolInfo().setState(State.PLAY); | ||
| }); | ||
|
|
||
| registerServerbound(State.LOGIN, ServerboundLoginPackets.HELLO.getId(), ServerboundLoginPackets.HELLO.getId(), wrapper -> { | ||
| wrapper.passthrough(Type.STRING); // Name | ||
|
|
||
| // TODO Bad | ||
| final UUID uuid = wrapper.read(Type.OPTIONAL_UUID); | ||
| wrapper.write(Type.UUID, uuid != null ? uuid : new UUID(0, 0)); | ||
| }); | ||
|
|
||
| cancelClientbound(ClientboundPackets1_20_2.START_CONFIGURATION); // TODO | ||
|
|
||
| // Some can be directly remapped to play packets, others need to be queued | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.DISCONNECT.getId(), ClientboundPackets1_19_4.DISCONNECT.getId()); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.KEEP_ALIVE.getId(), ClientboundPackets1_19_4.KEEP_ALIVE.getId()); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.RESOURCE_PACK.getId(), ClientboundPackets1_19_4.RESOURCE_PACK.getId()); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.REGISTRY_DATA.getId(), -1, wrapper -> { | ||
| wrapper.cancel(); | ||
|
|
||
| final CompoundTag registry = wrapper.read(Type.NAMELESS_NBT); | ||
| entityPacketRewriter.trackBiomeSize(wrapper.user(), registry); | ||
| entityPacketRewriter.cacheDimensionData(wrapper.user(), registry); | ||
| wrapper.user().get(ConfigurationPacketStorage.class).setRegistry(registry); | ||
| }); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.UPDATE_ENABLED_FEATURES.getId(), -1, wrapper -> { | ||
| wrapper.cancel(); | ||
|
|
||
| final String[] enabledFeatures = wrapper.read(Type.STRING_ARRAY); | ||
| wrapper.user().get(ConfigurationPacketStorage.class).setEnabledFeatures(enabledFeatures); | ||
| }); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.UPDATE_TAGS.getId(), -1, wrapper -> { | ||
| wrapper.cancel(); | ||
| wrapper.user().get(ConfigurationPacketStorage.class).addRawPacket(wrapper, ClientboundPackets1_19_4.TAGS); | ||
| }); | ||
| registerClientbound(State.CONFIGURATION, ClientboundConfigurationPackets1_20_2.CUSTOM_PAYLOAD.getId(), -1, wrapper -> { | ||
| wrapper.cancel(); | ||
| wrapper.user().get(ConfigurationPacketStorage.class).addRawPacket(wrapper, ClientboundPackets1_19_4.PLUGIN_MESSAGE); | ||
| }); | ||
| } | ||
|
|
||
| @Override | ||
| public void transform(final Direction direction, final State state, final PacketWrapper wrapper) throws Exception { | ||
| final ConfigurationPacketStorage configurationPacketStorage = wrapper.user().get(ConfigurationPacketStorage.class); | ||
| if (configurationPacketStorage == null) { | ||
| super.transform(direction, state, wrapper); | ||
| return; | ||
| } | ||
| if (direction == Direction.CLIENTBOUND) { | ||
| super.transform(direction, State.CONFIGURATION, wrapper); | ||
| return; | ||
| } | ||
|
|
||
| // Map some of the packets to their configuration counterparts | ||
| final int id = wrapper.getId(); | ||
| if (id == ServerboundPackets1_19_4.PLUGIN_MESSAGE.getId()) { | ||
| wrapper.setPacketType(ServerboundConfigurationPackets1_20_2.CUSTOM_PAYLOAD); | ||
| } else if (id == ServerboundPackets1_19_4.KEEP_ALIVE.getId()) { | ||
| wrapper.setPacketType(ServerboundConfigurationPackets1_20_2.KEEP_ALIVE); | ||
| } else if (id == ServerboundPackets1_19_4.PONG.getId()) { | ||
| wrapper.setPacketType(ServerboundConfigurationPackets1_20_2.PONG); | ||
| } else if (id == ServerboundPackets1_19_4.RESOURCE_PACK_STATUS.getId()) { | ||
| wrapper.setPacketType(ServerboundConfigurationPackets1_20_2.RESOURCE_PACK); | ||
| } else { | ||
| // Can't do | ||
| // TODO Queue | ||
| System.out.println("Cancelling: " + state + " - " + wrapper.getPacketType() + " " + wrapper.getId()); | ||
| throw CancelException.generate(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void init(final UserConnection connection) { | ||
| addEntityTracker(connection, new EntityTrackerBase(connection, Entity1_19_4Types.PLAYER)); | ||
| } | ||
|
|
||
| @Override | ||
| public EntityRewriter<Protocol1_20To1_20_2> getEntityRewriter() { | ||
| return entityPacketRewriter; | ||
| } | ||
|
|
||
| @Override | ||
| public ItemRewriter<Protocol1_20To1_20_2> getItemRewriter() { | ||
| return itemPacketRewriter; | ||
| } | ||
| } |
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