310 lines
13 KiB
Java
310 lines
13 KiB
Java
package net.citizensnpcs;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.Set;
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import java.util.UUID;
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import java.util.function.Function;
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import org.bukkit.Bukkit;
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import org.bukkit.entity.Entity;
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import org.bukkit.entity.EntityType;
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import org.bukkit.entity.Player;
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import org.bukkit.event.EventHandler;
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import org.bukkit.event.Listener;
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import com.comphenix.protocol.PacketType;
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import com.comphenix.protocol.PacketType.Play.Server;
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import com.comphenix.protocol.ProtocolLibrary;
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import com.comphenix.protocol.ProtocolManager;
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import com.comphenix.protocol.events.ListenerOptions;
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import com.comphenix.protocol.events.ListenerPriority;
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import com.comphenix.protocol.events.PacketAdapter;
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import com.comphenix.protocol.events.PacketContainer;
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import com.comphenix.protocol.events.PacketEvent;
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import com.comphenix.protocol.reflect.FieldAccessException;
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import com.comphenix.protocol.reflect.StructureModifier;
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import com.comphenix.protocol.utility.MinecraftReflection;
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import com.comphenix.protocol.wrappers.EnumWrappers;
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import com.comphenix.protocol.wrappers.PlayerInfoData;
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import com.comphenix.protocol.wrappers.WrappedChatComponent;
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import com.comphenix.protocol.wrappers.WrappedDataValue;
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import com.comphenix.protocol.wrappers.WrappedGameProfile;
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import com.comphenix.protocol.wrappers.WrappedSignedProperty;
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import com.comphenix.protocol.wrappers.WrappedWatchableObject;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Maps;
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import com.mojang.authlib.GameProfile;
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import com.mojang.authlib.properties.Property;
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import net.citizensnpcs.api.event.NPCAddTraitEvent;
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import net.citizensnpcs.api.event.NPCDespawnEvent;
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import net.citizensnpcs.api.event.NPCEvent;
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import net.citizensnpcs.api.event.NPCSpawnEvent;
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import net.citizensnpcs.api.npc.NPC;
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import net.citizensnpcs.api.trait.trait.MobType;
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import net.citizensnpcs.api.util.Messaging;
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import net.citizensnpcs.npc.ai.NPCHolder;
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import net.citizensnpcs.trait.MirrorTrait;
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import net.citizensnpcs.trait.RotationTrait;
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import net.citizensnpcs.trait.RotationTrait.PacketRotationSession;
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import net.citizensnpcs.util.NMS;
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import net.citizensnpcs.util.SkinProperty;
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public class ProtocolLibListener implements Listener {
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private final Class<?> flagsClass;
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private final ProtocolManager manager;
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private final Map<UUID, MirrorTrait> mirrorTraits = Maps.newConcurrentMap();
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private final Citizens plugin;
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private final Map<Integer, RotationTrait> rotationTraits = Maps.newConcurrentMap();
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public ProtocolLibListener(Citizens plugin) {
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this.plugin = plugin;
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this.manager = ProtocolLibrary.getProtocolManager();
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flagsClass = MinecraftReflection.getMinecraftClass("RelativeMovement", "world.entity.RelativeMovement",
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"EnumPlayerTeleportFlags", "PacketPlayOutPosition$EnumPlayerTeleportFlags",
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"network.protocol.game.PacketPlayOutPosition$EnumPlayerTeleportFlags");
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Bukkit.getPluginManager().registerEvents(this, plugin);
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manager.addPacketListener(new PacketAdapter(plugin, ListenerPriority.HIGHEST, Server.ENTITY_METADATA) {
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@Override
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public void onPacketSending(PacketEvent event) {
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NPC npc = getNPCFromPacket(event);
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if (npc == null || !npc.data().has(NPC.Metadata.HOLOGRAM_LINE_SUPPLIER))
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return;
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Function<Player, String> hvs = npc.data().get(NPC.Metadata.HOLOGRAM_LINE_SUPPLIER);
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int version = manager.getProtocolVersion(event.getPlayer());
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PacketContainer packet = event.getPacket();
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if (version < 761) {
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List<WrappedWatchableObject> wwo = packet.getWatchableCollectionModifier().readSafely(0);
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if (wwo == null)
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return;
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boolean delta = false;
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String text = hvs.apply(event.getPlayer());
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for (WrappedWatchableObject wo : wwo) {
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if (wo.getIndex() != 2)
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continue;
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if (version <= 340) {
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wo.setValue(text);
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} else {
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wo.setValue(Optional.of(Messaging.minecraftComponentFromRawMessage(text)));
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}
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delta = true;
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break;
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}
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if (delta) {
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packet.getWatchableCollectionModifier().write(0, wwo);
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}
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} else {
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List<WrappedDataValue> wdvs = packet.getDataValueCollectionModifier().readSafely(0);
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if (wdvs == null)
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return;
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boolean delta = false;
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String text = hvs.apply(event.getPlayer());
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for (WrappedDataValue wdv : wdvs) {
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if (wdv.getIndex() != 2)
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continue;
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wdv.setValue(Optional.of(Messaging.minecraftComponentFromRawMessage(text)));
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break;
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}
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if (delta) {
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packet.getDataValueCollectionModifier().write(0, wdvs);
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}
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}
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}
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});
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manager.addPacketListener(new PacketAdapter(plugin, ListenerPriority.HIGHEST, Arrays.asList(Server.PLAYER_INFO),
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ListenerOptions.ASYNC) {
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@Override
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public void onPacketSending(PacketEvent event) {
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int version = manager.getProtocolVersion(event.getPlayer());
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if (version >= 761) {
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NMS.onPlayerInfoAdd(event.getPlayer(), event.getPacket().getHandle(),
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uuid -> mirrorTraits.get(uuid));
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return;
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}
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List<PlayerInfoData> list = event.getPacket().getPlayerInfoDataLists().readSafely(0);
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if (list == null)
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return;
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boolean changed = false;
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GameProfile playerProfile = null;
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WrappedGameProfile wgp = null;
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WrappedChatComponent playerName = null;
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for (int i = 0; i < list.size(); i++) {
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PlayerInfoData npcInfo = list.get(i);
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if (npcInfo == null)
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continue;
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MirrorTrait trait = mirrorTraits.get(npcInfo.getProfile().getUUID());
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if (trait == null || !trait.isMirroring(event.getPlayer()))
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continue;
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if (playerProfile == null) {
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playerProfile = NMS.getProfile(event.getPlayer());
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wgp = WrappedGameProfile.fromPlayer(event.getPlayer());
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playerName = WrappedChatComponent.fromText(event.getPlayer().getDisplayName());
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}
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if (trait.mirrorName()) {
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list.set(i, new PlayerInfoData(wgp.withId(npcInfo.getProfile().getId()), npcInfo.getLatency(),
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npcInfo.getGameMode(), playerName));
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continue;
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}
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Collection<Property> textures = playerProfile.getProperties().get("textures");
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if (textures == null || textures.size() == 0)
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continue;
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npcInfo.getProfile().getProperties().clear();
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for (String key : playerProfile.getProperties().keySet()) {
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npcInfo.getProfile().getProperties().putAll(key,
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Iterables.transform(playerProfile.getProperties().get(key), skin -> {
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SkinProperty sp = SkinProperty.fromMojang(skin);
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return new WrappedSignedProperty(sp.name, sp.value, sp.signature);
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}));
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}
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changed = true;
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}
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if (changed) {
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event.getPacket().getPlayerInfoDataLists().write(0, list);
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}
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}
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});
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manager.addPacketListener(new PacketAdapter(
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plugin, ListenerPriority.HIGHEST, Arrays.asList(Server.ENTITY_HEAD_ROTATION, Server.ENTITY_LOOK,
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Server.REL_ENTITY_MOVE_LOOK, Server.ENTITY_MOVE_LOOK, Server.POSITION, Server.ENTITY_TELEPORT),
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ListenerOptions.ASYNC) {
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@Override
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public void onPacketSending(PacketEvent event) {
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Integer eid = null;
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try {
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eid = event.getPacket().getIntegers().readSafely(0);
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if (eid == null)
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return;
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} catch (FieldAccessException | IllegalArgumentException ex) {
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if (!LOGGED_ERROR) {
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Messaging.severe(
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"Error retrieving entity from ID: ProtocolLib error? Suppressing further exceptions unless debugging.");
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ex.printStackTrace();
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LOGGED_ERROR = true;
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} else if (Messaging.isDebugging()) {
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ex.printStackTrace();
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}
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return;
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}
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RotationTrait trait = rotationTraits.get(eid);
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if (trait == null)
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return;
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PacketRotationSession session = trait.getPacketSession(event.getPlayer());
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if (session == null || !session.isActive())
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return;
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PacketContainer packet = event.getPacket();
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PacketType type = event.getPacketType();
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if (type == Server.ENTITY_HEAD_ROTATION) {
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packet.getBytes().write(0, degToByte(session.getHeadYaw()));
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} else if (type == Server.ENTITY_LOOK) {
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packet.getBytes().write(0, degToByte(session.getBodyYaw()));
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packet.getBytes().write(1, degToByte(session.getPitch()));
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} else if (type == Server.ENTITY_MOVE_LOOK || type == Server.REL_ENTITY_MOVE_LOOK) {
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packet.getBytes().write(0, degToByte(session.getBodyYaw()));
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packet.getBytes().write(1, degToByte(session.getPitch()));
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} else if (type == Server.POSITION) {
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StructureModifier<Set<PlayerTeleportFlag>> flagsModifier = packet
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.getSets(EnumWrappers.getGenericConverter(flagsClass, PlayerTeleportFlag.class));
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Set<PlayerTeleportFlag> rel = flagsModifier.read(0);
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rel.remove(PlayerTeleportFlag.ZYAW);
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rel.remove(PlayerTeleportFlag.ZPITCH);
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flagsModifier.write(0, rel);
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packet.getFloat().write(0, session.getBodyYaw());
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packet.getFloat().write(1, session.getPitch());
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}
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session.onPacketOverwritten();
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Messaging.debug("OVERWRITTEN " + type + " " + packet.getHandle());
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}
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});
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}
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private NPC getNPCFromPacket(PacketEvent event) {
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PacketContainer packet = event.getPacket();
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Entity entity = null;
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try {
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Integer id = packet.getIntegers().readSafely(0);
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if (id == null)
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return null;
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entity = manager.getEntityFromID(event.getPlayer().getWorld(), id);
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} catch (FieldAccessException | IllegalArgumentException ex) {
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if (!LOGGED_ERROR) {
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Messaging.severe(
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"Error retrieving entity from ID: ProtocolLib error? Suppressing further exceptions unless debugging.");
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ex.printStackTrace();
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LOGGED_ERROR = true;
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} else if (Messaging.isDebugging()) {
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ex.printStackTrace();
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}
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return null;
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}
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return entity instanceof NPCHolder ? ((NPCHolder) entity).getNPC() : null;
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}
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@EventHandler(ignoreCancelled = true)
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public void onNPCDespawn(NPCDespawnEvent event) {
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rotationTraits.remove(event.getNPC().getEntity().getEntityId());
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mirrorTraits.remove(event.getNPC().getEntity().getUniqueId());
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}
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@EventHandler(ignoreCancelled = true)
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public void onNPCSpawn(NPCSpawnEvent event) {
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onSpawn(event);
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}
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private void onSpawn(NPCEvent event) {
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if (event.getNPC().hasTrait(RotationTrait.class)) {
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rotationTraits.put(event.getNPC().getEntity().getEntityId(),
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event.getNPC().getTraitNullable(RotationTrait.class));
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}
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if (event.getNPC().hasTrait(MirrorTrait.class)
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&& event.getNPC().getOrAddTrait(MobType.class).getType() == EntityType.PLAYER) {
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mirrorTraits.put(event.getNPC().getEntity().getUniqueId(),
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event.getNPC().getTraitNullable(MirrorTrait.class));
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}
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}
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@EventHandler(ignoreCancelled = true)
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public void onTraitAdd(NPCAddTraitEvent event) {
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if (!event.getNPC().isSpawned())
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return;
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onSpawn(event);
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}
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public enum PlayerTeleportFlag {
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X,
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Y,
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Z,
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ZPITCH,
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ZYAW,
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}
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private static byte degToByte(float in) {
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return (byte) (in * 256.0F / 360.0F);
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}
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private static boolean LOGGED_ERROR = false;
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}
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