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core/src/main/java/mc/core/network/NetStream.java

@@ -7,6 +7,8 @@ package mc.core.network;
 import lombok.Getter;
 import lombok.Setter;
 
+import java.util.UUID;
+
 public abstract class NetStream {
     @Getter
     @Setter
@@ -24,6 +26,7 @@ public abstract class NetStream {
     public abstract float readFloat();
     public abstract double readDouble();
     public abstract String readString();
+    public abstract UUID readUUID();
 
     public abstract void writeBoolean(boolean value);
     public abstract void writeByte(int value);
@@ -36,6 +39,7 @@ public abstract class NetStream {
     public abstract void writeFloat(float value);
     public abstract void writeDouble(double value);
     public abstract void writeString(String value);
+    public abstract void writeUUID(UUID uuid);
 
     public abstract void skipBytes(int count);
 }

proto_1.12.2/src/main/java/mc/core/network/proto_1_12_2/NetStream_p340.java

@@ -8,6 +8,7 @@ import lombok.extern.slf4j.Slf4j;
 import mc.core.network.NetStream;
 
 import java.nio.charset.StandardCharsets;
+import java.util.UUID;
 
 @Slf4j
 public abstract class NetStream_p340 extends NetStream {
@@ -70,4 +71,15 @@ public abstract class NetStream_p340 extends NetStream {
             writeBytes(buf);
         }
     }
+
+    @Override
+    public UUID readUUID() {
+        return new UUID(readLong(), readLong());
+    }
+
+    @Override
+    public void writeUUID(UUID uuid) {
+        writeLong(uuid.getMostSignificantBits());
+        writeLong(uuid.getLeastSignificantBits());
+    }
 }

proto_1.12.2/src/main/java/mc/core/network/proto_1_12_2/State.java

@@ -60,11 +60,13 @@ public enum State {
                     .put(PluginMessagePacket.class, 0x18)
                     .put(KeepAlivePacket.class, 0x1F)
                     .put(JoinGamePacket.class, 0x23)
+                    .put(PlayerAbilitiesPacket.class, 0x2C)
+                    .put(PlayerListItemPacket.class, 0x2E)
+                    .put(PlayerPositionAndLookPacket.class, 0x2F)
                     .put(SpawnPositionPacket.class, 0x46)
                     .put(TimeUpdatePacket.class, 0x47)
                     .put(TitlePacket.class, 0x48)
-                    .put(PlayerAbilitiesPacket.class, 0x2C)
+                    .put(PlayerListHeaderAndFooterPacket.class, 0x4A)
-                    .put(PlayerPositionAndLookPacket.class, 0x2F)
                     .build()
     );
 

proto_1.12.2/src/main/java/mc/core/network/proto_1_12_2/packets/PlayerListHeaderAndFooterPacket.java

@@ -0,0 +1,35 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-07-11
+ */
+package mc.core.network.proto_1_12_2.packets;
+
+import lombok.Setter;
+import lombok.ToString;
+import mc.core.network.NetStream;
+import mc.core.network.SCPacket;
+import mc.core.network.proto_1_12_2.serializers.TextSerializer;
+import mc.core.text.Text;
+
+@Setter
+@ToString
+public class PlayerListHeaderAndFooterPacket implements SCPacket {
+    // To remove the header/footer, send a empty translatable component: {"translate":""}
+    private Text header;
+    private Text footer;
+
+    @Override
+    public void writeSelf(NetStream netStream) {
+        if (header == null) {
+            netStream.writeString("{\"translate\":\"\"}");
+        } else {
+            netStream.writeString(TextSerializer.serialize(header).toString());
+        }
+
+        if (footer == null) {
+            netStream.writeString("{\"translate\":\"\"}");
+        } else {
+            netStream.writeString(TextSerializer.serialize(footer).toString());
+        }
+    }
+}

proto_1.12.2/src/main/java/mc/core/network/proto_1_12_2/packets/PlayerListItemPacket.java

@@ -0,0 +1,81 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-07-11
+ */
+package mc.core.network.proto_1_12_2.packets;
+
+import lombok.Data;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
+import mc.core.network.NetStream;
+import mc.core.network.SCPacket;
+import mc.core.network.proto_1_12_2.serializers.TextSerializer;
+import mc.core.player.PlayerMode;
+import mc.core.text.Text;
+
+import java.util.*;
+
+@Slf4j
+@Getter
+@Setter
+@ToString
+public class PlayerListItemPacket implements SCPacket {
+    public static final int ACTION_ADD_PLAYER = 0,
+                            ACTION_UPDATE_GAMEMODE = 1,
+                            ACTION_UPDATE_LATENCY = 2,
+                            ACTION_UPDATE_DISPLAY_NAME = 3,
+                            ACTION_REMOVE_PLAYER = 4;
+
+    @Data
+    @ToString
+    public static class PlayerData {
+        private UUID uuid;
+        private String name;
+        private Properties properties = new Properties();
+        private PlayerMode gameMode;
+        private int ping;
+        private boolean hasDisplayName = false;
+        private Text displayName;
+    }
+
+    private int action;
+    private List<PlayerData> listPlayers = new ArrayList<>();
+
+    @Override
+    public void writeSelf(NetStream netStream) {
+        netStream.writeVarInt(action);
+        netStream.writeVarInt(listPlayers.size());
+
+        for (PlayerData playerData : listPlayers) {
+            netStream.writeUUID(playerData.uuid);
+
+            if (action == ACTION_ADD_PLAYER) {
+                netStream.writeString(playerData.name);
+                netStream.writeVarInt(playerData.properties.size());
+
+                for (Map.Entry<Object, Object> entry : playerData.properties.entrySet()) {
+                    netStream.writeString(entry.getKey().toString());
+                    netStream.writeString(entry.getValue().toString());
+                    netStream.writeBoolean(false); // Is Signed
+                }
+            }
+
+            if (action == ACTION_ADD_PLAYER || action == ACTION_UPDATE_GAMEMODE) {
+                netStream.writeVarInt(playerData.gameMode.getId());
+            }
+
+            if (action == ACTION_ADD_PLAYER || action == ACTION_UPDATE_LATENCY) {
+                netStream.writeVarInt(playerData.ping);
+            }
+
+            if (action == ACTION_ADD_PLAYER || action == ACTION_UPDATE_DISPLAY_NAME) {
+                netStream.writeBoolean(playerData.hasDisplayName);
+                if (playerData.hasDisplayName) {
+                    netStream.writeString(TextSerializer.serialize(playerData.displayName).toString());
+                }
+            }
+        }
+    }
+}

proto_1.12.2_netty/src/main/java/mc/core/network/proto_1_12_2/netty/handlers/LoginHandler.java

@@ -16,6 +16,7 @@ import mc.core.player.PlayerManager;
 import mc.core.player.PlayerMode;
 import mc.core.text.Text;
 import mc.core.text.TextColor;
+import mc.core.text.TextStyle;
 import mc.core.world.World;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
@@ -86,6 +87,31 @@ public class LoginHandler extends AbstractStateHandler implements LoginStateHand
             channel.writeAndFlush(pkt4);
 
             player.setChannel(new WrapperNetChannel(channel));
+
+            // Send <Tab> items
+            PlayerListItemPacket pkt5 = new PlayerListItemPacket();
+            pkt5.setAction(PlayerListItemPacket.ACTION_ADD_PLAYER);
+            PlayerListItemPacket.PlayerData playerData = new PlayerListItemPacket.PlayerData();
+            playerData.setUuid(player.getUUID());
+            playerData.setName(player.getName());
+            playerData.setGameMode(PlayerMode.CREATIVE);
+            playerData.setPing(0);
+            playerData.setHasDisplayName(true);
+            playerData.setDisplayName(Text.builder()
+                    .append(Text.of(TextColor.RED, TextStyle.BOLD, player.getName().substring(0,1)))
+                    .append(Text.of(TextColor.WHITE, player.getName().substring(1)))
+                    .build()
+            );
+            pkt5.getListPlayers().add(playerData);
+            channel.writeAndFlush(pkt5);
+
+            // Send header/footer БЕфиЮ list
+            PlayerListHeaderAndFooterPacket pkt6 = new PlayerListHeaderAndFooterPacket();
+            Text text = Text.of(TextColor.GOLD, "=============================");
+            pkt6.setHeader(text);
+            pkt6.setFooter(text);
+            channel.writeAndFlush(pkt6);
+
             playerManager.joinServer(player);
         }
     }