Added packet pre-encoding. Code style.

src/main/java/ru/nanit/limbo/protocol/PreRenderedPacket.java

@@ -0,0 +1,31 @@
+package ru.nanit.limbo.protocol;
+
+public class PreRenderedPacket implements PacketOut {
+
+    private final PacketOut packet;
+    private byte[] message;
+
+    public PreRenderedPacket(PacketOut packet){
+        this.packet = packet;
+    }
+
+    public PacketOut getWrappedPacket(){
+        return packet;
+    }
+
+    public PreRenderedPacket render(){
+        ByteMessage renderedMessage = ByteMessage.create();
+        packet.encode(renderedMessage);
+        this.message = renderedMessage.toByteArray();
+        return this;
+    }
+
+    @Override
+    public void encode(ByteMessage msg) {
+        msg.writeBytes(message);
+    }
+
+    public static PreRenderedPacket of(PacketOut packet){
+        return new PreRenderedPacket(packet).render();
+    }
+}

src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerInfo.java

@@ -1,31 +1,37 @@
 package ru.nanit.limbo.protocol.packets.play;
 
-import ru.nanit.limbo.connection.ClientConnection;
 import ru.nanit.limbo.protocol.ByteMessage;
 import ru.nanit.limbo.protocol.PacketOut;
 
+import java.util.UUID;
+
 /**
- * This packet wrapper used only for ADD_PLAYER action
+ * This packet was very simplified and using only for ADD_PLAYER action
  */
 public class PacketPlayerInfo implements PacketOut {
 
-    private int gameMode;
-    private ClientConnection connection;
-
-    public void setConnection(ClientConnection connection) {
-        this.connection = connection;
-    }
+    private int gameMode = 3;
+    private String username = "";
+    private UUID uuid;
 
     public void setGameMode(int gameMode) {
         this.gameMode = gameMode;
     }
 
+    public void setUsername(String username){
+        this.username = username;
+    }
+
+    public void setUuid(UUID uuid){
+        this.uuid = uuid;
+    }
+
     @Override
     public void encode(ByteMessage msg) {
         msg.writeVarInt(0);
         msg.writeVarInt(1);
-        msg.writeUuid(connection.getUuid());
-        msg.writeString(connection.getUsername());
+        msg.writeUuid(uuid);
+        msg.writeString(username);
         msg.writeVarInt(0);
         msg.writeVarInt(gameMode);
         msg.writeVarInt(60);

src/main/java/ru/nanit/limbo/protocol/pipeline/PacketEncoder.java

@@ -5,6 +5,7 @@ import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.MessageToByteEncoder;
 import ru.nanit.limbo.protocol.ByteMessage;
 import ru.nanit.limbo.protocol.Packet;
+import ru.nanit.limbo.protocol.PreRenderedPacket;
 import ru.nanit.limbo.protocol.registry.State;
 import ru.nanit.limbo.util.Logger;
 
@@ -21,7 +22,13 @@ public class PacketEncoder extends MessageToByteEncoder<Packet> {
         if (registry == null) return;
 
         ByteMessage msg = new ByteMessage(out);
-        int packetId = registry.getPacketId(packet.getClass());
+        int packetId;
+
+        if (packet instanceof PreRenderedPacket){
+            packetId = registry.getPacketId(((PreRenderedPacket)packet).getWrappedPacket().getClass());
+        } else {
+            packetId = registry.getPacketId(packet.getClass());
+        }
 
         if (packetId == -1){
             Logger.warning("Undefined packet class: %s", packet.getClass().getName());