First complete CoreEntity (untested) implementation

SpigotCore_14/src/de/steamwar/core/FlatteningWrapper14.java

@@ -27,6 +27,7 @@ import org.bukkit.inventory.meta.SkullMeta;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 public class FlatteningWrapper14 implements FlatteningWrapper.IFlatteningWrapper {
 
@@ -307,4 +308,9 @@ public class FlatteningWrapper14 implements FlatteningWrapper.IFlatteningWrapper
     public void setNamedSpawnPacketDataWatcher(Object packet) {
         // field not present
     }
+
+    @Override
+    public Object formatDisplayName(String displayName) {
+        return displayName != null ? Optional.of(ChatWrapper.impl.stringToChatComponent(displayName)) : Optional.empty();
+    }
 }

SpigotCore_8/src/de/steamwar/core/FlatteningWrapper8.java

@@ -79,4 +79,9 @@ public class FlatteningWrapper8 implements FlatteningWrapper.IFlatteningWrapper
     public void setNamedSpawnPacketDataWatcher(Object packet) {
         namedSpawnDataWatcher.set(packet, dataWatcherConstructor.invoke((Object) null));
     }
+
+    @Override
+    public Object formatDisplayName(String displayName) {
+        return displayName != null ? displayName : "";
+    }
 }

SpigotCore_Main/src/de/steamwar/core/FlatteningWrapper.java

@@ -41,5 +41,6 @@ public class FlatteningWrapper {
 
         Object getPose(boolean sneaking);
         void setNamedSpawnPacketDataWatcher(Object packet);
+        Object formatDisplayName(String displayName);
     }
 }

SpigotCore_Main/src/de/steamwar/entity/REntity.java

@@ -20,54 +20,36 @@
 package de.steamwar.entity;
 
 import com.comphenix.tinyprotocol.Reflection;
-import com.mojang.authlib.GameProfile;
 import de.steamwar.core.*;
 import it.unimi.dsi.fastutil.ints.IntArrayList;
 import it.unimi.dsi.fastutil.ints.IntList;
 import org.bukkit.Location;
-import org.bukkit.Material;
-import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.EntityType;
 import org.bukkit.inventory.ItemStack;
 
 import java.util.*;
 import java.util.function.Consumer;
+import java.util.function.Function;
 
 public class REntity {
 
     private static final Object entityStatusWatcher = BountifulWrapper.impl.getDataWatcherObject(0, Byte.class);
     private static final Object sneakingDataWatcher = BountifulWrapper.impl.getDataWatcherObject(Core.getVersion() > 12 ? 6 : 0, FlatteningWrapper.impl.getPose(true).getClass());
     private static final Object bowDrawnWatcher = BountifulWrapper.impl.getDataWatcherObject(Core.getVersion() > 12 ? 7 : 6, Byte.class);
-    private static final Object skinPartsDataWatcher = BountifulWrapper.impl.getDataWatcherObject(16, Byte.class); //TODO multiversioning
+    private static final Object nameWatcher = BountifulWrapper.impl.getDataWatcherObject(2, Core.getVersion() > 12 ? Optional.class : String.class); // Optional<IChatBaseComponent>
-    private static final Object nameWatcher = BountifulWrapper.impl.getDataWatcherObject(2, Optional.class); // Optional<IChatBaseComponent>, first optional //TODO multiversioning (dataWatcherRegistry.getFields()[fieldIndex].get(null))
+    private static final Object nameVisibleWatcher = BountifulWrapper.impl.getDataWatcherObject(3, Boolean.class);
-    private static final Object nameVisibleWatcher = BountifulWrapper.impl.getDataWatcherObject(3, Boolean.class); //TODO multiversioning
-    private static final Object sizeWatcher = BountifulWrapper.impl.getDataWatcherObject(14, Byte.class); //TODO multiversioning
-
-    /*
-    private static final String SCOREBOARD_TEAMNAME = "Replay";
-    private static final Team team;
-
-    static {
-        if(FightScoreboard.getBukkit().getTeam(SCOREBOARD_TEAMNAME) == null)
-            team = FightScoreboard.getBukkit().registerNewTeam(SCOREBOARD_TEAMNAME);
-        else
-            team = FightScoreboard.getBukkit().getTeam(SCOREBOARD_TEAMNAME);
-        team.setNameTagVisibility(NameTagVisibility.NEVER);
-    }
-    */
 
     private static int entityIdCounter = -1;
     private static final Random random = new Random();
 
     private final REntityServer server;
     private final EntityType entityType;
-    private final int entityId;
+    protected final int entityId;
-    private final UUID uuid;
+    protected final UUID uuid;
-    private final String name;
 
-    private double x;
+    protected double x;
-    private double y;
+    protected double y;
-    private double z;
+    protected double z;
     private byte yaw;
     private byte pitch;
     private byte headYaw;
@@ -77,24 +59,17 @@ public class REntity {
     private boolean bowDrawn;
     private int fireTick;
     private String displayName;
-    private final Map<Object, ItemStack> itemSlots;
+    protected final Map<Object, ItemStack> itemSlots;
-
-    //TODO packet caching
-    public REntity(REntityServer server, UUID uuid, String name, Location location) {
-        this(server, EntityType.PLAYER, uuid, name, location);
-        //team.addEntry(name);
-    }
 
     public REntity(REntityServer server, EntityType entityType, Location location) {
-        this(server, entityType, new UUID(random.nextLong() & -61441L | 16384L, random.nextLong() & 4611686018427387903L | -9223372036854775808L), null, location);
+        this(server, entityType, new UUID(random.nextLong() & -61441L | 16384L, random.nextLong() & 4611686018427387903L | -9223372036854775808L), location);
     }
 
-    private REntity(REntityServer server, EntityType entityType, UUID uuid, String name, Location location) {
+    protected REntity(REntityServer server, EntityType entityType, UUID uuid, Location location) {
         this.server = server;
         this.entityType = entityType;
         this.entityId = entityIdCounter--;
         this.uuid = uuid;
-        this.name = name;
 
         this.x = location.getX();
         this.y = location.getY();
@@ -116,9 +91,11 @@ public class REntity {
         this.z = locZ;
         this.yaw = rotToByte(yaw);
         this.pitch = rotToByte(pitch);
-        this.headYaw = headYaw;
         server.updateEntity(this, getTeleportPacket());
-        server.updateEntity(this, getHeadRotationPacket());
+        if(this.headYaw != headYaw) {
+            this.headYaw = headYaw;
+            server.updateEntity(this, getHeadRotationPacket());
+        }
         server.postEntityMove(this, fromX, fromZ);
     }
 
@@ -186,36 +163,10 @@ public class REntity {
 
     public void setDisplayName(String displayName) {
         this.displayName = displayName;
-        server.updateEntity(this, getDataWatcherPacket(nameWatcher, displayName != null ? Optional.of(ChatWrapper.impl.stringToChatComponent(displayName)) : Optional.empty()));
+        server.updateEntity(this, getDataWatcherPacket(
-        server.updateEntity(this, getDataWatcherPacket(nameVisibleWatcher, displayName != null));
+                nameWatcher, FlatteningWrapper.impl.formatDisplayName(displayName),
-    }
+                nameVisibleWatcher, displayName != null
-
+        ));
-    @Deprecated
-    public void setItem(String item, boolean enchanted, String slot) {
-        ItemStack stack = new ItemStack(Material.valueOf(item.replace("minecraft:", "").toUpperCase()), 1);
-        if(enchanted)
-            stack.addUnsafeEnchantment(Enchantment.DURABILITY, 1);
-
-        switch(slot){
-            case "HEAD":
-                setItem(ProtocolWrapper.itemSlots[5], stack);
-                break;
-            case "CHEST":
-                setItem(ProtocolWrapper.itemSlots[4], stack);
-                break;
-            case "LEGS":
-                setItem(ProtocolWrapper.itemSlots[3], stack);
-                break;
-            case "FEET":
-                setItem(ProtocolWrapper.itemSlots[2], stack);
-                break;
-            case "OFFHAND":
-                setItem(ProtocolWrapper.itemSlots[1], stack);
-                break;
-            case "MAINHAND":
-            default:
-                setItem(ProtocolWrapper.itemSlots[0], stack);
-        }
     }
 
     public void setItem(Object slot, ItemStack stack) {
@@ -227,27 +178,22 @@ public class REntity {
         server.removeEntity(this);
     }
 
+    private static final Function<REntity, Object> livingSpawnPacketGenerator = entitySpawnPacketGenerator(ProtocolWrapper.spawnLivingPacket, 2);
+    private static final Function<REntity, Object> spawnPacketGenerator = entitySpawnPacketGenerator(ProtocolWrapper.spawnPacket, 1);
     void spawn(Consumer<Object> packetSink) {
-        if(entityType == EntityType.PLAYER){
+        if(entityType.isAlive()) {
-            packetSink.accept(getPlayerInfoPacket(addPlayer));
+            packetSink.accept(livingSpawnPacketGenerator.apply(this));
-            packetSink.accept(getNamedSpawnPacket());
-            for (Map.Entry<Object, ItemStack> entry : itemSlots.entrySet()) {
-                packetSink.accept(getEquipmentPacket(entry.getKey(), entry.getValue()));
-            }
-            packetSink.accept(getDataWatcherPacket(skinPartsDataWatcher, (byte) 0x7F)); //TODO multiversioning
-        } else if(entityType.isAlive()) {
-            packetSink.accept(getSpawnLivingEntityPacket());
-            packetSink.accept(getDataWatcherPacket(sizeWatcher, (byte) 0x10)); // small size //TODO multiversioning TODO only on ArmorStands
-            for (Map.Entry<Object, ItemStack> entry : itemSlots.entrySet()) {
-                packetSink.accept(getEquipmentPacket(entry.getKey(), entry.getValue()));
-            }
         } else {
-            packetSink.accept(getSpawnEntityPacket());
+            packetSink.accept(spawnPacketGenerator.apply(this));
         }
-        //packetSink.accept(getTeleportPacket());
-        packetSink.accept(getHeadRotationPacket()); //TODO head rotation for all types?
 
-        //TODO merge MetadataPacket (DataWatcherPackets)
+        postSpawn(packetSink);
+    }
+
+    protected void postSpawn(Consumer<Object> packetSink) {
+        if(headYaw != 0) {
+            packetSink.accept(getHeadRotationPacket());
+        }
 
         if(Core.getVersion() > 12 && sneaks) {
             packetSink.accept(getDataWatcherPacket(sneakingDataWatcher, FlatteningWrapper.impl.getPose(true)));
@@ -259,8 +205,7 @@ public class REntity {
         }
 
         if(displayName != null) {
-            packetSink.accept(getDataWatcherPacket(nameWatcher, Optional.of(ChatWrapper.impl.stringToChatComponent(displayName))));
+            packetSink.accept(getDataWatcherPacket(nameWatcher, FlatteningWrapper.impl.formatDisplayName(displayName), nameVisibleWatcher, true));
-            packetSink.accept(getDataWatcherPacket(nameVisibleWatcher, true));
         }
     }
 
@@ -282,11 +227,6 @@ public class REntity {
             destroyEntities = Reflection.getField(destroyPacket, int[].class, 0);
     }
     void despawn(Consumer<Object> packetSink){
-        if(entityType == EntityType.PLAYER){
-            packetSink.accept(getPlayerInfoPacket(removePlayer));
-            //team.removeEntry(name);
-        }
-
         Object packet = Reflection.newInstance(destroyPacket);
         destroyEntities.set(packet, Core.getVersion() > 15 ? new IntArrayList(new int[]{entityId}) : new int[]{entityId});
         packetSink.accept(packet);
@@ -305,7 +245,7 @@ public class REntity {
 
         if(fireTick != 0)
             status |= 1;
-        if(Core.getVersion() <= 12 && sneaks)
+        if(sneaks)
             status |= 2;
         if(Core.getVersion() == 8 && bowDrawn)
             status |= 0x10;
@@ -319,7 +259,7 @@ public class REntity {
     private static final Reflection.FieldAccessor<Integer> metadataEntity = Reflection.getField(metadataPacket, int.class, 0);
     private static final Reflection.FieldAccessor<List> metadataMetadata = Reflection.getField(metadataPacket, List.class, 0);
 
-    private Object getDataWatcherPacket(Object... dataWatcherKeyValues) {
+    protected Object getDataWatcherPacket(Object... dataWatcherKeyValues) {
         Object packet = Reflection.newInstance(metadataPacket);
         metadataEntity.set(packet, entityId);
 
@@ -360,63 +300,35 @@ public class REntity {
 
     private static final Class<?> craftItemStack = Reflection.getClass("{obc}.inventory.CraftItemStack");
     private static final Reflection.MethodInvoker asNMSCopy = Reflection.getTypedMethod(REntity.craftItemStack, "asNMSCopy", ProtocolWrapper.itemStack, ItemStack.class);
-    private Object getEquipmentPacket(Object slot, ItemStack stack){
+    protected Object getEquipmentPacket(Object slot, ItemStack stack){
         Object packet = Reflection.newInstance(ProtocolWrapper.equipmentPacket);
         equipmentEntity.set(packet, entityId);
         ProtocolWrapper.impl.setEquipmentPacketStack(packet, slot, asNMSCopy.invoke(null, stack));
         return packet;
     }
 
-    private static final Class<?> playerInfoPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutPlayerInfo");
+    private static Function<REntity, Object> entitySpawnPacketGenerator(Class<?> spawnPacket, int posOffset8) {
-    private static final Class<?> playerInfoActionClass = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutPlayerInfo$EnumPlayerInfoAction");
+        BountifulWrapper.UUIDSetter uuid = BountifulWrapper.impl.getUUIDSetter(spawnPacket);
-    private static final Object addPlayer = playerInfoActionClass.getEnumConstants()[0];
+        Function<REntity, Object> packetGenerator = spawnPacketGenerator(spawnPacket, posOffset8);
-    private static final Reflection.FieldAccessor<?> playerInfoAction = Reflection.getField(playerInfoPacket, playerInfoActionClass, 0);
+
-    private static final Object removePlayer = playerInfoActionClass.getEnumConstants()[4];
+        return entity -> {
-    private static final Reflection.FieldAccessor<List> playerInfoData = Reflection.getField(playerInfoPacket, List.class, 0);
+            Object packet = packetGenerator.apply(entity);
-    private static final Class<?> enumGamemode = Reflection.getClass(Core.getVersion() > 9 ? "{nms.world.level}.EnumGamemode" : "{nms}.WorldSettings$EnumGamemode");
+            uuid.set(packet, entity.uuid);
-    private static final Object creative = enumGamemode.getEnumConstants()[Core.getVersion() > 15 ? 1 : 2];
+            ProtocolWrapper.impl.setSpawnPacketType(packet, entity.entityType);
-    private Object getPlayerInfoPacket(Object action){
+            return packet;
-        Object packet = Reflection.newInstance(playerInfoPacket);
+        };
-        playerInfoAction.set(packet, action);
-        playerInfoData.set(packet, Collections.singletonList(ProtocolWrapper.impl.playerInfoDataConstructor(packet, new GameProfile(uuid, name), creative)));
-        return packet;
     }
 
-    private static final Class<?> namedSpawnPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutNamedEntitySpawn");
+    protected static Function<REntity, Object> spawnPacketGenerator(Class<?> spawnPacket, int posOffset8) {
-    private static final Reflection.FieldAccessor<Integer> namedSpawnEntity = Reflection.getField(namedSpawnPacket, int.class, 0);
+        Reflection.FieldAccessor<Integer> entityId = Reflection.getField(spawnPacket, int.class, 0);
-    private static final Reflection.FieldAccessor<UUID> namedSpawnUUID = Reflection.getField(namedSpawnPacket, UUID.class, 0);
+        BountifulWrapper.PositionSetter position = BountifulWrapper.impl.getPositionSetter(spawnPacket, posOffset8);
-    private static final BountifulWrapper.PositionSetter namedSpawnPosition = BountifulWrapper.impl.getPositionSetter(namedSpawnPacket, 1);
-    private Object getNamedSpawnPacket() {
-        Object packet = Reflection.newInstance(namedSpawnPacket);
-        namedSpawnEntity.set(packet, entityId);
-        namedSpawnUUID.set(packet, uuid);
-        namedSpawnPosition.set(packet, x, y, z);
-        FlatteningWrapper.impl.setNamedSpawnPacketDataWatcher(packet);
-        return packet;
-    }
 
-    private static final Reflection.FieldAccessor<Integer> spawnLivingEntityId = Reflection.getField(ProtocolWrapper.spawnLivingPacket, int.class, 0);
+        return entity -> {
-    private static final BountifulWrapper.UUIDSetter livingSpawnUUID = BountifulWrapper.impl.getUUIDSetter(ProtocolWrapper.spawnLivingPacket);
+            Object packet = Reflection.newInstance(spawnPacket);
-    private static final BountifulWrapper.PositionSetter livingSpawnPosition = BountifulWrapper.impl.getPositionSetter(ProtocolWrapper.spawnLivingPacket, 2); //TODO only diff to spawnEntity, simplify code
+            entityId.set(packet, entity.entityId);
-    private Object getSpawnLivingEntityPacket() {
+            position.set(packet, entity.x, entity.y, entity.z);
-        Object packet = Reflection.newInstance(ProtocolWrapper.spawnLivingPacket);
+            return packet;
-        spawnLivingEntityId.set(packet, entityId);
+        };
-        livingSpawnUUID.set(packet, uuid);
-        ProtocolWrapper.impl.setSpawnPacketType(packet, entityType);
-        livingSpawnPosition.set(packet, x, y, z);
-        return packet;
-    }
-
-    private static final Reflection.FieldAccessor<Integer> spawnEntity = Reflection.getField(ProtocolWrapper.spawnPacket, int.class, 0);
-    private static final BountifulWrapper.UUIDSetter spawnUUID = BountifulWrapper.impl.getUUIDSetter(ProtocolWrapper.spawnPacket);
-    private static final BountifulWrapper.PositionSetter spawnPosition = BountifulWrapper.impl.getPositionSetter(ProtocolWrapper.spawnPacket, 1);
-    private Object getSpawnEntityPacket() {
-        Object packet = Reflection.newInstance(ProtocolWrapper.spawnPacket);
-        spawnEntity.set(packet, entityId);
-        spawnUUID.set(packet, uuid);
-        ProtocolWrapper.impl.setSpawnPacketType(packet, entityType);
-        spawnPosition.set(packet, x, y, z);
-        return packet;
     }
 
     private byte rotToByte(float rot) {

SpigotCore_Main/src/de/steamwar/entity/RHologram.java

@@ -0,0 +1,62 @@
+/*
+ *    This file is a part of the SteamWar software.
+ *
+ *    Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.entity;
+
+import de.steamwar.core.BountifulWrapper;
+import de.steamwar.core.Core;
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+
+import java.util.function.Consumer;
+
+public class RHologram extends REntity {
+
+    private static int sizeIndex() {
+        switch(Core.getVersion()) {
+            case 8:
+            case 9:
+                return 10;
+            case 10:
+            case 12:
+                return 11;
+            case 14:
+                return 13;
+            case 15:
+                return 14;
+            case 18:
+            case 19:
+            default:
+                return 15;
+        }
+    }
+
+    private static final Object sizeWatcher = BountifulWrapper.impl.getDataWatcherObject(sizeIndex(), Byte.class);
+
+    public RHologram(REntityServer server, Location location) {
+        super(server, EntityType.ARMOR_STAND, location);
+        setInvisible(true);
+    }
+
+    @Override
+    void spawn(Consumer<Object> packetSink) {
+        super.spawn(packetSink);
+        packetSink.accept(getDataWatcherPacket(sizeWatcher, (byte) 0x10));
+    }
+}

SpigotCore_Main/src/de/steamwar/entity/RPlayer.java

@@ -0,0 +1,128 @@
+/*
+ *    This file is a part of the SteamWar software.
+ *
+ *    Copyright (C) 2023  SteamWar.de-Serverteam
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.entity;
+
+import com.comphenix.tinyprotocol.Reflection;
+import com.mojang.authlib.GameProfile;
+import de.steamwar.core.BountifulWrapper;
+import de.steamwar.core.Core;
+import de.steamwar.core.FlatteningWrapper;
+import de.steamwar.core.ProtocolWrapper;
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+public class RPlayer extends REntity {
+
+    /*
+    private static final String SCOREBOARD_TEAMNAME = "Replay";
+    private static final Team team;
+
+    static {
+        if(FightScoreboard.getBukkit().getTeam(SCOREBOARD_TEAMNAME) == null)
+            team = FightScoreboard.getBukkit().registerNewTeam(SCOREBOARD_TEAMNAME);
+        else
+            team = FightScoreboard.getBukkit().getTeam(SCOREBOARD_TEAMNAME);
+        team.setNameTagVisibility(NameTagVisibility.NEVER);
+    }
+    */
+
+    private static int skinPartsIndex() {
+        switch(Core.getVersion()) {
+            case 8:
+                return 10;
+            case 9:
+                return 12;
+            case 10:
+            case 12:
+                return 13;
+            case 14:
+                return 15;
+            case 15:
+                return 16;
+            case 18:
+            case 19:
+            default:
+                return 17;
+        }
+    }
+
+    private static final Object skinPartsDataWatcher = BountifulWrapper.impl.getDataWatcherObject(skinPartsIndex(), Byte.class);
+
+    private final String name;
+
+    public RPlayer(REntityServer server, UUID uuid, String name, Location location) {
+        super(server, EntityType.PLAYER, uuid, location);
+        this.name = name;
+        //team.addEntry(name);
+    }
+
+    @Override
+    void spawn(Consumer<Object> packetSink) {
+        packetSink.accept(getPlayerInfoPacket(addPlayer));
+        packetSink.accept(getNamedSpawnPacket());
+        packetSink.accept(getDataWatcherPacket(skinPartsDataWatcher, (byte) 0x7F));
+
+        for (Map.Entry<Object, ItemStack> entry : itemSlots.entrySet()) {
+            packetSink.accept(getEquipmentPacket(entry.getKey(), entry.getValue()));
+        }
+
+        postSpawn(packetSink);
+    }
+
+    @Override
+    void despawn(Consumer<Object> packetSink) {
+        //team.removeEntry(name);
+        super.despawn(packetSink);
+        packetSink.accept(getPlayerInfoPacket(removePlayer));
+    }
+
+    private static final Class<?> playerInfoPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutPlayerInfo");
+    private static final Class<?> playerInfoActionClass = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutPlayerInfo$EnumPlayerInfoAction");
+    private static final Object addPlayer = playerInfoActionClass.getEnumConstants()[0];
+    private static final Reflection.FieldAccessor<?> playerInfoAction = Reflection.getField(playerInfoPacket, playerInfoActionClass, 0);
+    private static final Object removePlayer = playerInfoActionClass.getEnumConstants()[4];
+    private static final Reflection.FieldAccessor<List> playerInfoData = Reflection.getField(playerInfoPacket, List.class, 0);
+    private static final Class<?> enumGamemode = Reflection.getClass(Core.getVersion() > 9 ? "{nms.world.level}.EnumGamemode" : "{nms}.WorldSettings$EnumGamemode");
+    private static final Object creative = enumGamemode.getEnumConstants()[Core.getVersion() > 15 ? 1 : 2];
+    private Object getPlayerInfoPacket(Object action){
+        Object packet = Reflection.newInstance(playerInfoPacket);
+        playerInfoAction.set(packet, action);
+        playerInfoData.set(packet, Collections.singletonList(ProtocolWrapper.impl.playerInfoDataConstructor(packet, new GameProfile(uuid, name), creative)));
+        return packet;
+    }
+
+    private static final Class<?> namedSpawnPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutNamedEntitySpawn");
+    private static final Function<REntity, Object> namedSpawnPacketGenerator = spawnPacketGenerator(namedSpawnPacket, 1);
+    private static final Reflection.FieldAccessor<UUID> namedSpawnUUID = Reflection.getField(namedSpawnPacket, UUID.class, 0);
+    private Object getNamedSpawnPacket() {
+        Object packet = namedSpawnPacketGenerator.apply(this);
+        namedSpawnUUID.set(packet, uuid);
+        FlatteningWrapper.impl.setNamedSpawnPacketDataWatcher(packet);
+        return packet;
+    }
+}