408 lines
20 KiB
Java
408 lines
20 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.google.common.collect.ImmutableList;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.api.minecraft.item.Item;
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import com.viaversion.viaversion.api.minecraft.metadata.Metadata;
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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.ValueTransformer;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.api.type.types.version.Types1_8;
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import com.viaversion.viaversion.api.type.types.version.Types1_9;
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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.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.metadata.MetadataRewriter1_9To1_8;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.storage.EntityTracker1_9;
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import com.viaversion.viaversion.util.Pair;
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import com.viaversion.viaversion.util.Triple;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.UUID;
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public class EntityPackets {
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public static final ValueTransformer<Byte, Short> toNewShort = new ValueTransformer<Byte, Short>(Type.SHORT) {
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@Override
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public Short transform(PacketWrapper wrapper, Byte inputValue) {
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return (short) (inputValue * 128);
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}
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};
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public static void register(Protocol1_9To1_8 protocol) {
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// Attach Entity Packet
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protocol.registerClientbound(ClientboundPackets1_8.ATTACH_ENTITY, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.INT); // 0 - Entity ID
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map(Type.INT); // 1 - Vehicle
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// Leash boolean is removed in new versions
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map(Type.BOOLEAN, new ValueTransformer<Boolean, Void>(Type.NOTHING) {
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@Override
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public Void transform(PacketWrapper wrapper, Boolean inputValue) throws Exception {
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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if (!inputValue) {
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int passenger = wrapper.get(Type.INT, 0);
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int vehicle = wrapper.get(Type.INT, 1);
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wrapper.cancel(); // Don't send current packet
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PacketWrapper passengerPacket = wrapper.create(0x40); // Passenger Packet ID
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if (vehicle == -1) {
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if (!tracker.getVehicleMap().containsKey(passenger))
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return null; // Cancel
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passengerPacket.write(Type.VAR_INT, tracker.getVehicleMap().remove(passenger));
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passengerPacket.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[]{});
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} else {
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passengerPacket.write(Type.VAR_INT, vehicle);
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passengerPacket.write(Type.VAR_INT_ARRAY_PRIMITIVE, new int[]{passenger});
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tracker.getVehicleMap().put(passenger, vehicle);
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}
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passengerPacket.send(Protocol1_9To1_8.class); // Send the packet
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}
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return null;
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.ENTITY_TELEPORT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Type.INT, SpawnPackets.toNewDouble); // 1 - X - Needs to be divide by 32
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map(Type.INT, SpawnPackets.toNewDouble); // 2 - Y - Needs to be divide by 32
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map(Type.INT, SpawnPackets.toNewDouble); // 3 - Z - Needs to be divide by 32
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map(Type.BYTE); // 4 - Pitch
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map(Type.BYTE); // 5 - Yaw
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map(Type.BOOLEAN); // 6 - On Ground
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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 entityID = wrapper.get(Type.VAR_INT, 0);
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if (Via.getConfig().isHologramPatch()) {
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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if (tracker.getKnownHolograms().contains(entityID)) {
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Double newValue = wrapper.get(Type.DOUBLE, 1);
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newValue += (Via.getConfig().getHologramYOffset());
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wrapper.set(Type.DOUBLE, 1, newValue);
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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.ENTITY_POSITION_AND_ROTATION, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Type.BYTE, toNewShort); // 1 - X
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map(Type.BYTE, toNewShort); // 2 - Y
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map(Type.BYTE, toNewShort); // 3 - Z
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map(Type.BYTE); // 4 - Yaw
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map(Type.BYTE); // 5 - Pitch
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map(Type.BOOLEAN); // 6 - On Ground
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.ENTITY_POSITION, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Type.BYTE, toNewShort); // 1 - X
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map(Type.BYTE, toNewShort); // 2 - Y
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map(Type.BYTE, toNewShort); // 3 - Z
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map(Type.BOOLEAN); // 4 - On Ground
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.ENTITY_EQUIPMENT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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// 1 - Slot ID
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map(Type.SHORT, new ValueTransformer<Short, Integer>(Type.VAR_INT) {
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@Override
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public Integer transform(PacketWrapper wrapper, Short slot) throws Exception {
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int entityId = wrapper.get(Type.VAR_INT, 0);
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int receiverId = wrapper.user().getEntityTracker(Protocol1_9To1_8.class).clientEntityId();
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// Normally, 0 = hand and 1-4 = armor
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// ... but if the sent id is equal to the receiver's id, 0-3 will instead mark the armor slots
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// (In 1.9+, every client treats the received the same: 0=hand, 1=offhand, 2-5=armor)
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if (entityId == receiverId) {
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return slot.intValue() + 2;
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}
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return slot > 0 ? slot.intValue() + 1 : slot.intValue();
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}
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});
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map(Type.ITEM); // 2 - Item
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// Item Rewriter
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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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Item stack = wrapper.get(Type.ITEM, 0);
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ItemRewriter.toClient(stack);
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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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EntityTracker1_9 entityTracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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int entityID = wrapper.get(Type.VAR_INT, 0);
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Item stack = wrapper.get(Type.ITEM, 0);
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if (stack != null) {
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if (Protocol1_9To1_8.isSword(stack.getIdentifier())) {
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entityTracker.getValidBlocking().add(entityID);
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return;
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}
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}
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entityTracker.getValidBlocking().remove(entityID);
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}
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});
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}
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});
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protocol.registerClientbound(ClientboundPackets1_8.ENTITY_METADATA, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Types1_8.METADATA_LIST, Types1_9.METADATA_LIST); // 1 - Metadata List
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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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List<Metadata> metadataList = wrapper.get(Types1_9.METADATA_LIST, 0);
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int entityId = wrapper.get(Type.VAR_INT, 0);
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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if (tracker.hasEntity(entityId)) {
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protocol.get(MetadataRewriter1_9To1_8.class).handleMetadata(entityId, metadataList, wrapper.user());
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} else {
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// Buffer
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tracker.addMetadataToBuffer(entityId, metadataList);
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wrapper.cancel();
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}
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}
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});
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// Handler for meta data
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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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List<Metadata> metadataList = wrapper.get(Types1_9.METADATA_LIST, 0);
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int entityID = wrapper.get(Type.VAR_INT, 0);
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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tracker.handleMetadata(entityID, metadataList);
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}
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});
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// Cancel packet if list empty
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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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List<Metadata> metadataList = wrapper.get(Types1_9.METADATA_LIST, 0);
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if (metadataList.isEmpty()) {
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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.ENTITY_EFFECT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Type.BYTE); // 1 - Effect ID
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map(Type.BYTE); // 2 - Amplifier
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map(Type.VAR_INT); // 3 - Duration
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handler(new PacketHandler() { //Handle effect indicator
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@Override
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public void handle(PacketWrapper wrapper) throws Exception {
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boolean showParticles = wrapper.read(Type.BOOLEAN); //In 1.8 = true->Show particles : false->Hide particles
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boolean newEffect = Via.getConfig().isNewEffectIndicator();
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//0: hide, 1: shown without indictator, 2: shown with indicator, 3: hide with beacon indicator but we don't use it.
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wrapper.write(Type.BYTE, (byte) (showParticles ? newEffect ? 2 : 1 : 0));
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}
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});
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}
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});
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protocol.cancelClientbound(ClientboundPackets1_8.UPDATE_ENTITY_NBT);
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protocol.registerClientbound(ClientboundPackets1_8.COMBAT_EVENT, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); //Event id
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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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if (wrapper.get(Type.VAR_INT, 0) == 2) { // entity dead
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wrapper.passthrough(Type.VAR_INT); //Player id
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wrapper.passthrough(Type.INT); //Entity id
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Protocol1_9To1_8.FIX_JSON.write(wrapper, wrapper.read(Type.STRING));
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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.ENTITY_PROPERTIES, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT);
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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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if (!Via.getConfig().isMinimizeCooldown()) return;
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EntityTracker1_9 tracker = wrapper.user().getEntityTracker(Protocol1_9To1_8.class);
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if (wrapper.get(Type.VAR_INT, 0) != tracker.getProvidedEntityId()) {
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return;
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}
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int propertiesToRead = wrapper.read(Type.INT);
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Map<String, Pair<Double, List<Triple<UUID, Double, Byte>>>> properties = new HashMap<>(propertiesToRead);
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for (int i = 0; i < propertiesToRead; i++) {
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String key = wrapper.read(Type.STRING);
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Double value = wrapper.read(Type.DOUBLE);
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int modifiersToRead = wrapper.read(Type.VAR_INT);
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List<Triple<UUID, Double, Byte>> modifiers = new ArrayList<>(modifiersToRead);
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for (int j = 0; j < modifiersToRead; j++) {
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modifiers.add(
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new Triple<>(
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wrapper.read(Type.UUID),
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wrapper.read(Type.DOUBLE), // Amount
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wrapper.read(Type.BYTE) // Operation
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)
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);
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}
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properties.put(key, new Pair<>(value, modifiers));
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}
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// == Why 15.9? ==
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// Higher values hides the cooldown but it bugs visual animation on hand
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// when removing item from hand with inventory gui
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properties.put("generic.attackSpeed", new Pair<Double, List<Triple<UUID, Double, Byte>>>(15.9, ImmutableList.of( // Neutralize modifiers
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new Triple<>(UUID.fromString("FA233E1C-4180-4865-B01B-BCCE9785ACA3"), 0.0, (byte) 0), // Tool and weapon modifier
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new Triple<>(UUID.fromString("AF8B6E3F-3328-4C0A-AA36-5BA2BB9DBEF3"), 0.0, (byte) 2), // Dig speed
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new Triple<>(UUID.fromString("55FCED67-E92A-486E-9800-B47F202C4386"), 0.0, (byte) 2) // Dig slow down
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)));
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wrapper.write(Type.INT, properties.size());
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for (Map.Entry<String, Pair<Double, List<Triple<UUID, Double, Byte>>>> entry : properties.entrySet()) {
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wrapper.write(Type.STRING, entry.getKey()); // Key
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wrapper.write(Type.DOUBLE, entry.getValue().getKey()); // Value
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wrapper.write(Type.VAR_INT, entry.getValue().getValue().size());
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for (Triple<UUID, Double, Byte> modifier : entry.getValue().getValue()) {
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wrapper.write(Type.UUID, modifier.getFirst());
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wrapper.write(Type.DOUBLE, modifier.getSecond()); // Amount
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wrapper.write(Type.BYTE, modifier.getThird()); // Operation
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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.ENTITY_ANIMATION, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID
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map(Type.UNSIGNED_BYTE); // 1 - Animation
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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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if (wrapper.get(Type.UNSIGNED_BYTE, 0) == 3) {
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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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/* Incoming Packets */
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protocol.registerServerbound(ServerboundPackets1_9.ENTITY_ACTION, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Player ID
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map(Type.VAR_INT); // 1 - Action
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map(Type.VAR_INT); // 2 - Jump
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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.VAR_INT, 1);
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if (action == 6 || action == 8)
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wrapper.cancel();
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if (action == 7) {
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wrapper.set(Type.VAR_INT, 1, 6);
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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.INTERACT_ENTITY, new PacketRemapper() {
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@Override
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public void registerMap() {
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map(Type.VAR_INT); // 0 - Entity ID (Target)
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map(Type.VAR_INT); // 1 - Action Type
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// Cancel second hand to prevent double interact
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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 type = wrapper.get(Type.VAR_INT, 1);
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if (type == 2) {
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wrapper.passthrough(Type.FLOAT); // 2 - X
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wrapper.passthrough(Type.FLOAT); // 3 - Y
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wrapper.passthrough(Type.FLOAT); // 4 - Z
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}
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if (type == 0 || type == 2) {
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int hand = wrapper.read(Type.VAR_INT); // 2/5 - Hand
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if (hand == 1)
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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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}
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