TitlePacket

README.MD

@@ -1,13 +1,12 @@
 # MC-SERVER
 
-![version: 1.1](https://img.shields.io/badge/version-1.1-05b.svg?style=flat)
+![version: 1.0-SNAPSHOT](https://img.shields.io/badge/version-1.0-05b.svg?style=flat)
-![codename: VOID](https://img.shields.io/badge/codename-VOID-509.svg?style=flat)
+![codename: ZERO](https://img.shields.io/badge/codename-ZERO-509.svg?style=flat)
 ![protocol: 1.12.2](https://img.shields.io/badge/protocol-1.12.2-075.svg?style=flat)
 
 Написанный с нуля сервер **Minecraft 1.12.2**.
 
-На данный момент сервер может показывать о себе информацию в списке серверов (motd, онлайн, иконка) и позволять
+На данный момент может только показывать информацию о себе. Подключение к серверу не возможно.
-игрокам подключиться к себе. Загружается пустой мир.
 
 ---
 

gradle.properties

@@ -1,3 +1,3 @@
 project.group=mc-project
 project.name=mc-server
-project.version=1.1
+project.version=1.1-SNAPSHOT

protocol/src/main/java/mc/protocol/NettyConnectionContext.java

@@ -2,16 +2,12 @@ package mc.protocol;
 
 import io.netty.channel.ChannelHandlerContext;
 import lombok.EqualsAndHashCode;
-import lombok.Getter;
 import lombok.Setter;
 import lombok.experimental.Accessors;
 import mc.protocol.api.ConnectionContext;
 import mc.protocol.packets.ServerSidePacket;
 import mc.protocol.pool.Passivable;
 
-import java.util.Map;
-import java.util.Optional;
-
 @EqualsAndHashCode
 public class NettyConnectionContext implements ConnectionContext, Passivable {
 
@@ -19,14 +15,6 @@ public class NettyConnectionContext implements ConnectionContext, Passivable {
 	@Setter
 	private ChannelHandlerContext ctx;
 
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	@Getter
-	@Setter
-	private boolean usedContext;
-
 	@Override
 	public State getState() {
 		return ctx.channel().attr(NetworkAttributes.STATE).get();
@@ -37,27 +25,6 @@ public class NettyConnectionContext implements ConnectionContext, Passivable {
 		ctx.channel().attr(NetworkAttributes.STATE).set(state);
 	}
 
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	@Override
-	public <T> void setCustomProperty(String key, T value) {
-		Map<String, Object> map = ctx.channel().attr(NetworkAttributes.CUSTOM_PROPERTIES).get();
-		map.put(key, value);
-	}
-
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	@SuppressWarnings("unchecked")
-	@Override
-	public <T> Optional<T> getCustomProperty(String key, Class<T> classResult) {
-		Map<String, Object> map = ctx.channel().attr(NetworkAttributes.CUSTOM_PROPERTIES).get();
-		return (Optional<T>) Optional.ofNullable(map.getOrDefault(key, null));
-	}
-
 	@Override
 	public void send(ServerSidePacket packet) {
 		ctx.write(packet);

protocol/src/main/java/mc/protocol/NetworkAttributes.java

@@ -3,16 +3,8 @@ package mc.protocol;
 import io.netty.util.AttributeKey;
 import lombok.experimental.UtilityClass;
 
-import java.util.Map;
-
 @UtilityClass
 public class NetworkAttributes {
 
 	public static final AttributeKey<State> STATE = AttributeKey.newInstance("STATE");
-
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	public static final AttributeKey<Map<String, Object>> CUSTOM_PROPERTIES = AttributeKey.newInstance("CUSTOM_PROPERTIES");
 }

protocol/src/main/java/mc/protocol/PacketInboundHandler.java

@@ -3,20 +3,14 @@ package mc.protocol;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
 import mc.protocol.packets.ClientSidePacket;
 import mc.protocol.event.EventBus;
 import mc.protocol.pool.PacketPool;
 import org.apache.commons.pool2.ObjectPool;
 
-import java.io.IOException;
-
-@Slf4j
 @RequiredArgsConstructor
 public class PacketInboundHandler extends SimpleChannelInboundHandler<ClientSidePacket> {
 
-	private static final String CLIENT_FORCE_DISCONNECTED_IOEXCEPTION_MESSAGE_RU = "Программа на вашем хост-компьютере разорвала установленное подключение";
-
 	private final ObjectPool<NettyConnectionContext> poolNettyConnectionContext;
 	private final PacketPool poolPackets;
 	private final EventBus eventBus;
@@ -28,21 +22,7 @@ public class PacketInboundHandler extends SimpleChannelInboundHandler<ClientSide
 		NettyConnectionContext context = poolNettyConnectionContext.borrowObject().setCtx(ctx);
 		eventBus.emit(state, context, packet);
 
-		if (!context.isUsedContext()) {
+		poolNettyConnectionContext.returnObject(context);
-			poolNettyConnectionContext.returnObject(context);
-		}
 		poolPackets.returnObject(packet);
 	}
-
-	@Override
-	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
-		if (cause instanceof IOException && cause.getLocalizedMessage().equalsIgnoreCase(CLIENT_FORCE_DISCONNECTED_IOEXCEPTION_MESSAGE_RU)) {
-			log.warn("Client '{}' force disconnected", ctx.channel().remoteAddress());
-			if (log.isTraceEnabled()) {
-				log.trace("", cause);
-			}
-		} else {
-			log.error("{}", cause.getMessage(), cause);
-		}
-	}
 }

protocol/src/main/java/mc/protocol/State.java

@@ -4,7 +4,7 @@ import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import mc.protocol.packets.ClientSidePacket;
 import mc.protocol.packets.Packet;
-import mc.protocol.packets.KeepAlivePacket;
+import mc.protocol.packets.PingPacket;
 import mc.protocol.packets.ServerSidePacket;
 import mc.protocol.packets.client.*;
 import mc.protocol.packets.server.*;
@@ -24,12 +24,12 @@ public enum State {
 			// client side
 			Map.of(
 					0x00, StatusServerRequestPacket.class,
-					0x01, KeepAlivePacket.class
+					0x01, PingPacket.class
 			),
 			// server side
 			Map.of(
 					StatusServerResponse.class, 0x00,
-					KeepAlivePacket.class, 0x01
+					PingPacket.class, 0x01
 			)
 	),
 	LOGIN(2,
@@ -47,20 +47,20 @@ public enum State {
 					0x00, TeleportConfirmPacket.class,
 					0x04, ClientSettingsPacket.class,
 					0x09, PluginMessagePacket.class,
-					0x0B, KeepAlivePacket.class,
+					0x0B, PingPacket.class,
 					0x0D, PlayerPositionPacket.class,
 					0x0E, CPlayerPositionAndLookPacket.class,
-					0x0F, PlayerLookPacket.class,
+					0x0F, PlayerLookPacket.class
-					0x15, EntityActionPacket.class
 			),
 			// client bound
 			Map.of(
-					KeepAlivePacket.class, 0x1F,
+					PingPacket.class, 0x1F,
-					ChunkDataPacket.class, 0x20,
 					JoinGamePacket.class, 0x23,
+					SpawnPositionPacket.class, 0x46,
+					ChunkDataPacket.class, 0x20,
 					PlayerAbilitiesPacket.class,0x2C,
 					SPlayerPositionAndLookPacket.class, 0x2F,
-					SpawnPositionPacket.class, 0x46
+					TitlePacket.class, 0x48
 			)
 	);
 

protocol/src/main/java/mc/protocol/api/ConnectionContext.java

@@ -3,37 +3,11 @@ package mc.protocol.api;
 import mc.protocol.State;
 import mc.protocol.packets.ServerSidePacket;
 
-import java.util.Optional;
-
 public interface ConnectionContext {
 
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	void setUsedContext(boolean value);
-
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	boolean isUsedContext();
-
 	State getState();
 	void setState(State state);
 
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	<T> void setCustomProperty(String key, T value);
-
-	/**
-	 * @deprecated костыль
-	 */
-	@Deprecated
-	<T> Optional<T> getCustomProperty(String key, Class<T> classResult);
-
 	void send(ServerSidePacket packet);
 	void sendNow(ServerSidePacket packet);
 	void flushSending();

protocol/src/main/java/mc/protocol/io/codec/ProtocolDecoder.java

@@ -17,7 +17,6 @@ import mc.protocol.pool.PacketPool;
 import org.apache.commons.pool2.ObjectPool;
 
 import javax.annotation.Nonnull;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Objects;
 import java.util.function.Consumer;
@@ -37,8 +36,6 @@ public class ProtocolDecoder extends ByteToMessageDecoder {
 
 	@Override
 	public void channelActive(@Nonnull ChannelHandlerContext ctx) throws Exception {
-		ctx.channel().attr(NetworkAttributes.CUSTOM_PROPERTIES).set(new HashMap<>());
-
 		NettyConnectionContext context = poolNettyConnectionContext.borrowObject().setCtx(ctx);
 		consumerNewConnection.accept(context);
 
@@ -51,9 +48,6 @@ public class ProtocolDecoder extends ByteToMessageDecoder {
 		NettyConnectionContext context = poolNettyConnectionContext.borrowObject().setCtx(ctx);
 		consumerDisconnect.accept(context);
 
-		ctx.channel().attr(NetworkAttributes.CUSTOM_PROPERTIES).get().clear();
-		ctx.channel().attr(NetworkAttributes.CUSTOM_PROPERTIES).set(null);
-
 		poolNettyConnectionContext.returnObject(context);
 		super.channelInactive(ctx);
 	}

protocol/src/main/java/mc/protocol/model/Location.java

@@ -9,16 +9,4 @@ public class Location {
 	private double x;
 	private double y;
 	private double z;
-
-	public int getIntX() {
-		return (int) x;
-	}
-
-	public int getIntZ() {
-		return (int) z;
-	}
-
-	public Location toChunkXZ() {
-		return new Location(this.getIntX() >> 4, 0d, this.getIntZ() >> 4);
-	}
 }

protocol/src/main/java/mc/protocol/packets/PingPacket.java

@@ -25,7 +25,7 @@ import mc.protocol.io.NetByteBuf;
  * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=7368#Keep_Alive">Keep Alive</a>
  */
 @Data
-public class KeepAlivePacket implements ClientSidePacket, ServerSidePacket {
+public class PingPacket implements ClientSidePacket, ServerSidePacket {
 
 	private Long payload;
 

protocol/src/main/java/mc/protocol/packets/client/EntityActionPacket.java

@@ -1,52 +0,0 @@
-package mc.protocol.packets.client;
-
-import lombok.EqualsAndHashCode;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.ToString;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ClientSidePacket;
-import mc.protocol.utils.EntityActionAction;
-
-/**
- * Entity Action packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD      | TYPE   | NOTES                                     |
- * |------------|--------|-------------------------------------------|
- * | Entity ID  | VarInt | ID игрока                                 |
- * | Action ID  | VarInt | ID действия                               |
- * | Jump Boost | VarInt | Используется только при "Action ID" = 5.  |
- * |            |        | В этом случае значение будет от 0 до 100. |
- * |            |        | В остальных случаях значение 0.           |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Entity_Action" target="_top">Entity Action</a>
- */
-@NoArgsConstructor
-@Getter
-@EqualsAndHashCode
-@ToString
-public class EntityActionPacket implements ClientSidePacket {
-
-	private Integer entityId;
-	private EntityActionAction action;
-	private Integer jumpBoost;
-
-	@Override
-	public void readSelf(NetByteBuf netByteBuf) {
-		this.entityId = netByteBuf.readVarInt();
-		int actionId = netByteBuf.readVarInt();
-		this.jumpBoost = netByteBuf.readVarInt();
-
-		this.action = EntityActionAction.valueOfCode(actionId);
-	}
-
-	@Override
-	public void passivate() {
-		this.entityId = null;
-		this.action = null;
-		this.jumpBoost = null;
-	}
-}

protocol/src/main/java/mc/protocol/packets/server/ChunkDataPacket.java

@@ -28,17 +28,13 @@ import mc.protocol.packets.ServerSidePacket;
 @Data
 public class ChunkDataPacket implements ServerSidePacket {
 
-	private static NetByteBuf voidData;
-
 	private int x;
 	private int z;
 
-	@SuppressWarnings("java:S125")
 	@Override
 	public void writeSelf(NetByteBuf netByteBuf) {
 		netByteBuf.writeInt(x);
 		netByteBuf.writeInt(z);
-		/* Временное отключение кода
 		netByteBuf.writeBoolean(true); // Is Full chunk
 		netByteBuf.writeVarInt(0b11111111); // Available Sections
 
@@ -68,41 +64,6 @@ public class ChunkDataPacket implements ServerSidePacket {
 		netByteBuf.writeVarInt(data.readableBytes()); // Size of Data
 		netByteBuf.writeBytes(data); // Data
 		netByteBuf.writeVarInt(0); // Number of block entities
-		// write NBT's
+		/* write NBT's */
-		 */
-
-		netByteBuf.writeBytes(voidData);
-
-		voidData.resetReaderIndex();
-		voidData.resetWriterIndex();
-	}
-
-	static {
-		voidData = new NetByteBuf(Unpooled.buffer());
-		voidData.writeBoolean(true); // Is Full chunk
-		voidData.writeVarInt(0b11111111); // Available Sections
-
-		NetByteBuf data = new NetByteBuf(Unpooled.buffer());
-		for (int i = 0; i < 16; i++) {
-			NetByteBuf dataBuff = new NetByteBuf(Unpooled.wrappedBuffer(new byte[4096]));
-			NetByteBuf blockLight = new NetByteBuf(Unpooled.wrappedBuffer(new byte[2048]));
-			NetByteBuf skyLight = new NetByteBuf(Unpooled.wrappedBuffer(new byte[2048]));
-			NetByteBuf biomes = new NetByteBuf(Unpooled.wrappedBuffer(new byte[256]));
-
-			data.writeUnsignedByte(13);
-			data.writeUnsignedByte(0);
-			data.writeVarInt(dataBuff.readableBytes());
-			data.writeBytes(dataBuff);
-			data.writeBytes(blockLight);
-			data.writeBytes(skyLight);
-			data.writeBytes(biomes);
-		}
-
-		voidData.writeVarInt(data.readableBytes());
-		voidData.writeBytes(data);
-		voidData.writeVarInt(0);
-
-		voidData.markReaderIndex();
-		voidData.markWriterIndex();
 	}
 }

protocol/src/main/java/mc/protocol/packets/server/TitlePacket.java

@@ -0,0 +1,82 @@
+package mc.protocol.packets.server;
+
+import lombok.Data;
+import mc.protocol.io.NetByteBuf;
+import mc.protocol.model.text.Text;
+import mc.protocol.model.text.TextColor;
+import mc.protocol.model.text.TextStyle;
+import mc.protocol.packets.ServerSidePacket;
+import mc.protocol.serializer.TextSerializer;
+import mc.protocol.utils.TitleAction;
+
+/**
+ * Title packet.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD       | TYPE        | NOTES                            |
+ * |-------------|-------------|----------------------------------|
+ * | Action      | VarInt      | Определяет остальные поля пакета |
+ * | Data fields | -           | зависят от "Action"              |
+ * </pre>
+ *
+ * <p>Варианты "Action"</p>
+ * <pre>
+ * | ACTION                        | FIELD           | TYPE    | NOTES                                           |
+ * | VALUE | DESCRIPTION           |                 |         |                                                 |
+ * |-------|-----------------------|-----------------|---------|-------------------------------------------------|
+ * | 0     | set title             | Title Text      | Text    |                                                 |
+ * | 1     | set subtitle          | Subtitle Text   | Text    |                                                 |
+ * | 2     | set action bar        | Action bar text | Text    | [*]                                             |
+ * | 3     | set times and display | Fade In         | Integer | Время (в тиках (tick)) на эфект появления       |
+ * |       |                       | Stay            | Integer | Время (в тиках (tick)) на отображение на экране |
+ * |       |                       | Fade Out        | Integer | Время (в тиках (tick)) на эфект исчезания       |
+ * | 4     | hide                  | -               | -       |                                                 |
+ * | 5     | reset                 | -               | -       |                                                 |
+ * </pre>
+ *
+ * <p>
+ *     * - стоит обратить внимание, что {@link TextColor} и {@link TextStyle} не работают: клиент не применяет
+ *     стилистику в таком виде. Однако метод через символ "§" (\<span>u00a7</span>) работает.
+ * </p>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Title">Title</a>
+ */
+@Data
+public class TitlePacket implements ServerSidePacket {
+
+	private TitleAction action;
+
+	private Text title;
+	private Text subtitle;
+	private Text actionbar;
+	private Integer fadeIn;
+	private Integer stay;
+	private Integer fadeOut;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeVarInt(this.action.getCode());
+
+		switch (this.action) {
+			case SET_TITLE:
+				netByteBuf.writeString(TextSerializer.toJsonObject(this.title).toString());
+				break;
+			case SET_SUBTITLE:
+				netByteBuf.writeString(TextSerializer.toJsonObject(this.subtitle).toString());
+				break;
+			case SET_ACTIONBAR:
+				netByteBuf.writeString(TextSerializer.toJsonObject(this.actionbar).toString());
+				break;
+			case SET_TIMES_AND_DISPLAY:
+				netByteBuf.writeInt(fadeIn);
+				netByteBuf.writeInt(stay);
+				netByteBuf.writeInt(fadeOut);
+				break;
+			case HIDE:
+			case RESET:
+			default:
+				break;
+		}
+	}
+}

protocol/src/main/java/mc/protocol/utils/EntityActionAction.java

@@ -1,33 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-import javax.annotation.Nullable;
-
-@RequiredArgsConstructor
-public enum EntityActionAction {
-	START_SNEAKING(0),
-	STOP_SNEAKING(1),
-	LEAVE_BED(2),
-	START_SPRINTING(3),
-	STOP_SPRINTING(4),
-	START_JUMP_WITH_HORSE(5),
-	STOP_JUMP_WITH_HORSE(6),
-	OPEN_HORSE_INVENTORY(7),
-	START_FLYING_WITH_ELYTRA(8);
-
-	@Nullable
-	public static EntityActionAction valueOfCode(int code) {
-		for (EntityActionAction action : EntityActionAction.values()) {
-			if (action.code == code) {
-				return action;
-			}
-		}
-
-		return null;
-	}
-
-	@Getter
-	private final int code;
-}

protocol/src/main/java/mc/protocol/utils/TitleAction.java

@@ -0,0 +1,17 @@
+package mc.protocol.utils;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public enum TitleAction {
+	SET_TITLE(0),
+	SET_SUBTITLE(1),
+	SET_ACTIONBAR(2),
+	SET_TIMES_AND_DISPLAY(3),
+	HIDE(4),
+	RESET(5);
+
+	@Getter
+	private final int code;
+}

protocol/src/main/java/mc/protocol/world/Chunk.java

@@ -1,7 +0,0 @@
-package mc.protocol.world;
-
-public interface Chunk {
-
-	int getX();
-	int getZ();
-}

protocol/src/main/java/mc/protocol/world/World.java

@@ -1,13 +0,0 @@
-package mc.protocol.world;
-
-import mc.protocol.model.Location;
-import mc.protocol.utils.LevelType;
-
-public interface World {
-
-	LevelType getLevelType();
-
-	Location getSpawn();
-
-	Chunk getChunk(int x, int z);
-}

server/src/main/java/mc/server/Main.java

@@ -12,7 +12,7 @@ import mc.protocol.api.Server;
 import mc.protocol.di.DaggerProtocolComponent;
 import mc.protocol.di.ProtocolComponent;
 import mc.protocol.di.ProtocolModule;
-import mc.protocol.packets.KeepAlivePacket;
+import mc.protocol.packets.PingPacket;
 import mc.protocol.packets.client.HandshakePacket;
 import mc.protocol.packets.client.LoginStartPacket;
 import mc.protocol.packets.client.StatusServerRequestPacket;
@@ -20,7 +20,6 @@ import mc.server.config.Config;
 import mc.server.di.ConfigModule;
 import mc.server.di.DaggerServerComponent;
 import mc.server.di.ServerComponent;
-import mc.server.service.PlayerManager;
 import org.apache.commons.io.IOUtils;
 import org.slf4j.LoggerFactory;
 
@@ -49,7 +48,6 @@ public class Main {
 				.build();
 
 		Config config = serverComponent.getConfig();
-		PlayerManager playerManager = serverComponent.getPlayerManager();
 
 		ProtocolComponent protocolComponent = DaggerProtocolComponent.builder()
 				.protocolModule(new ProtocolModule(true))
@@ -59,16 +57,13 @@ public class Main {
 		PacketHandler packetHandler = serverComponent.getPacketHandler();
 
 		server.onNewConnect(connectionContext -> connectionContext.setState(State.HANDSHAKING));
-		server.onDisonnect(connectionContext -> {
+		server.onDisonnect(connectionContext -> connectionContext.setState(null));
-			connectionContext.setState(null);
-			connectionContext.getCustomProperty("player", Player.class).ifPresent(playerManager::remove);
-		});
 
 		server.listenPacket(State.HANDSHAKING, HandshakePacket.class, packetHandler::onHandshake);
-		server.listenPacket(State.STATUS, KeepAlivePacket.class, packetHandler::onKeepAlive);
+		server.listenPacket(State.STATUS, PingPacket.class, packetHandler::onKeepAlive);
 		server.listenPacket(State.STATUS, StatusServerRequestPacket.class, packetHandler::onServerStatus);
 		server.listenPacket(State.LOGIN, LoginStartPacket.class, packetHandler::onLoginStart);
-		server.listenPacket(State.PLAY, KeepAlivePacket.class, packetHandler::onKeepAlivePlay);
+		server.listenPacket(State.PLAY, PingPacket.class, packetHandler::onKeepAlivePlay);
 
 		server.bind(config.server().host(), config.server().port());
 	}

server/src/main/java/mc/server/PacketHandler.java

@@ -7,7 +7,8 @@ import mc.protocol.api.ConnectionContext;
 import mc.protocol.model.Location;
 import mc.protocol.model.Look;
 import mc.protocol.model.ServerInfo;
-import mc.protocol.packets.KeepAlivePacket;
+import mc.protocol.model.text.Text;
+import mc.protocol.packets.PingPacket;
 import mc.protocol.packets.client.HandshakePacket;
 import mc.protocol.packets.client.LoginStartPacket;
 import mc.protocol.packets.client.StatusServerRequestPacket;
@@ -15,10 +16,9 @@ import mc.protocol.packets.server.*;
 import mc.protocol.serializer.TextSerializer;
 import mc.protocol.utils.Difficulty;
 import mc.protocol.utils.GameMode;
-import mc.protocol.world.Chunk;
+import mc.protocol.utils.LevelType;
-import mc.protocol.world.World;
+import mc.protocol.utils.TitleAction;
 import mc.server.config.Config;
-import mc.server.service.PlayerManager;
 import org.apache.commons.io.IOUtils;
 
 import java.io.IOException;
@@ -27,7 +27,7 @@ import java.nio.file.Path;
 import java.util.Base64;
 import java.util.Collections;
 import java.util.Random;
-import java.util.concurrent.TimeUnit;
+import java.util.UUID;
 
 @Slf4j
 @RequiredArgsConstructor
@@ -35,27 +35,18 @@ public class PacketHandler {
 
 	private final Random random = new Random(System.currentTimeMillis());
 	private final Config config;
-	private final World world;
-	private final PlayerManager playerManager;
 
 	public void onHandshake(ConnectionContext context, HandshakePacket packet) {
 		context.setState(packet.getNextState());
 	}
 
-	public void onKeepAlive(ConnectionContext context, KeepAlivePacket packet) {
+	public void onKeepAlive(ConnectionContext context, PingPacket packet) {
 		context.sendNow(packet);
 		context.disconnect();
 	}
 
-	public void onKeepAlivePlay(ConnectionContext context, KeepAlivePacket packet) {
+	public void onKeepAlivePlay(ConnectionContext context, PingPacket packet) {
-		try {
+		context.sendNow(packet);
-			TimeUnit.MILLISECONDS.sleep(50);
-			context.sendNow(packet);
-		} catch (InterruptedException e) {
-			if (log.isTraceEnabled()) {
-				log.trace("{}", e.getMessage(), e);
-			}
-		}
 	}
 
 	@SuppressWarnings("unused")
@@ -64,11 +55,7 @@ public class PacketHandler {
 		serverInfo.version().name(ProtocolConstant.PROTOCOL_NAME);
 		serverInfo.version().protocol(ProtocolConstant.PROTOCOL_NUMBER);
 		serverInfo.players().max(config.players().maxOnlile());
-		if (config.players().fakeOnline().enable()) {
+		serverInfo.players().online(config.players().onlile());
-			serverInfo.players().online(config.players().fakeOnline().value());
-		} else {
-			serverInfo.players().online(playerManager.online());
-		}
 		serverInfo.players().sample(Collections.emptyList());
 		serverInfo.description(TextSerializer.fromPlain(config.motd()));
 
@@ -82,29 +69,27 @@ public class PacketHandler {
 		context.sendNow(response);
 	}
 
-	@SuppressWarnings("java:S2589")
 	public void onLoginStart(ConnectionContext context, LoginStartPacket loginStartPacket) {
-		Player player = playerManager.addAndCreate(context, loginStartPacket.getName(), GameMode.SURVIVAL, world.getSpawn());
-		context.setCustomProperty("player", player);
-
 		var loginSuccessPacket = new LoginSuccessPacket();
-		loginSuccessPacket.setUuid(player.getUuid());
+		loginSuccessPacket.setUuid(UUID.randomUUID());
-		loginSuccessPacket.setName(player.getName());
+		loginSuccessPacket.setName(loginStartPacket.getName());
 
 		context.sendNow(loginSuccessPacket);
 		context.setState(State.PLAY);
 
 		var joinGamePacket = new JoinGamePacket();
 		joinGamePacket.setEntityId(random.nextInt());
-		joinGamePacket.setGameMode(player.getGameMode());
+		joinGamePacket.setGameMode(GameMode.SURVIVAL);
 		joinGamePacket.setDimension(0/*Overworld*/);
 		joinGamePacket.setDifficulty(Difficulty.PEACEFUL);
-		joinGamePacket.setLevelType(world.getLevelType());
+		joinGamePacket.setLevelType(LevelType.FLAT);
 
 		context.send(joinGamePacket);
 
+		Location spawnLocation = new Location(7d, 130d, 7d);
+
 		var spawnPositionPacket = new SpawnPositionPacket();
-		spawnPositionPacket.setSpawn(player.getLocation());
+		spawnPositionPacket.setSpawn(spawnLocation);
 
 		context.send(spawnPositionPacket);
 
@@ -120,49 +105,33 @@ public class PacketHandler {
 
 		context.flushSending();
 
-		Location chunkLocation = player.getLocation().toChunkXZ();
-		Chunk chunk = world.getChunk(chunkLocation.getIntX(), chunkLocation.getIntZ());
-
 		var chunkDataPacket = new ChunkDataPacket();
-		chunkDataPacket.setX(chunk.getX());
+		chunkDataPacket.setX(0);
-		chunkDataPacket.setZ(chunk.getZ());
+		chunkDataPacket.setZ(0);
 
-		context.send(chunkDataPacket);
+		context.sendNow(chunkDataPacket);
-
-		for (int i = 1; i <= config.world().viewDistance(); i++) {
-			int minX = chunkLocation.getIntX() - i;
-			int minZ = chunkLocation.getIntZ() - i;
-			int maxX = chunkLocation.getIntX() + i;
-			int maxZ = chunkLocation.getIntZ() + i;
-
-			for (int z = minZ; z <= maxZ; z++) {
-				for (int x = minX; x <= maxX; x++) {
-					if ((z == minZ || z == maxZ) || (x == minX || x == maxX)) {
-						chunkDataPacket = new ChunkDataPacket();
-						chunkDataPacket.setX(x);
-						chunkDataPacket.setZ(z);
-
-						context.send(chunkDataPacket);
-					}
-				}
-			}
-		}
-
-		context.flushSending();
 
 		var playerPositionAndLookPacket = new SPlayerPositionAndLookPacket();
-		playerPositionAndLookPacket.setPosition(player.getLocation());
+		playerPositionAndLookPacket.setPosition(spawnLocation);
 		playerPositionAndLookPacket.setLook(new Look(0f, 0f));
 		playerPositionAndLookPacket.setTeleportId(random.nextInt());
 
 		context.send(playerPositionAndLookPacket);
 
-		KeepAlivePacket keepAlivePacket = new KeepAlivePacket();
+		PingPacket pingPacket = new PingPacket();
-		keepAlivePacket.setPayload(System.currentTimeMillis());
+		pingPacket.setPayload(System.currentTimeMillis());
 
-		context.send(keepAlivePacket);
+		context.send(pingPacket);
 
 		context.flushSending();
+
+		// -- Эксперименты -- //
+
+		var titlePacket = new TitlePacket();
+		titlePacket.setAction(TitleAction.SET_TITLE);
+		titlePacket.setTitle(Text.of("HELLO"));
+
+		context.sendNow(titlePacket);
 	}
 
 	private static String faviconToBase64(Path iconPath) {

server/src/main/java/mc/server/Player.java

@@ -1,20 +0,0 @@
-package mc.server;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-import mc.protocol.api.ConnectionContext;
-import mc.protocol.model.Location;
-import mc.protocol.utils.GameMode;
-
-import java.util.UUID;
-
-@RequiredArgsConstructor
-@Getter
-public class Player {
-
-	private final ConnectionContext connectionContext;
-	private final UUID uuid;
-	private final String name;
-	private final GameMode gameMode;
-	private final Location location;
-}

server/src/main/java/mc/server/config/Config.java

@@ -15,7 +15,6 @@ public class Config {
 
 	private final Server server = new Server();
 	private final Players players = new Players();
-	private final World world = new World();
 
 	private String motd;
 	private String disconnectReason;
@@ -33,23 +32,7 @@ public class Config {
 	@Setter
 	@ToString
 	public static class Players {
-		private final FakeOnline fakeOnline = new FakeOnline();
-
 		private int maxOnlile;
-	}
+		private int onlile;
-
-	@Getter
-	@Setter
-	@ToString
-	public static class FakeOnline {
-		private boolean enable;
-		private int value;
-	}
-
-	@Getter
-	@Setter
-	@ToString
-	public static class World {
-		private int viewDistance;
 	}
 }

server/src/main/java/mc/server/di/ConfigModule.java

@@ -27,15 +27,10 @@ public class ConfigModule {
 
 		config.server().host(fromYamlPath("server/host", map, "127.0.0.1"));
 		config.server().port(fromYamlPath("server/port", map, 25565));
-
 		config.motd(fromYamlPath("motd", map, ""));
 		config.disconnectReason(fromYamlPath("disconnect-reason", map, ""));
-
 		config.players().maxOnlile(fromYamlPath("players/max-online", map, 0));
-		config.players().fakeOnline().enable(fromYamlPath("players/fake-online/enable", map, false));
+		config.players().onlile(fromYamlPath("players/online", map, 0));
-		config.players().fakeOnline().value(fromYamlPath("players/fake-online/value", map, 0));
-
-		config.world().viewDistance(fromYamlPath("world/view-distance", map, 0));
 
 		if (Boolean.TRUE.equals(fromYamlPath("icon/enable", map, false))) {
 			config.iconPath(Paths.get(fromYamlPath("icon/path", map, "favicon.png")));

server/src/main/java/mc/server/di/PacketHandlerModule.java

@@ -2,16 +2,14 @@ package mc.server.di;
 
 import dagger.Module;
 import dagger.Provides;
-import mc.protocol.world.World;
 import mc.server.PacketHandler;
 import mc.server.config.Config;
-import mc.server.service.PlayerManager;
 
 @Module
 public class PacketHandlerModule {
 
 	@Provides
-	public PacketHandler providePacketHandler(Config config, World world, PlayerManager playerManager) {
+	public PacketHandler providePacketHandler(Config config) {
-		return new PacketHandler(config, world, playerManager);
+		return new PacketHandler(config);
 	}
 }

server/src/main/java/mc/server/di/PlayersModule.java

@@ -1,16 +0,0 @@
-package mc.server.di;
-
-import dagger.Module;
-import dagger.Provides;
-import mc.protocol.di.ServerScope;
-import mc.server.service.PlayerManager;
-
-@Module
-public class PlayersModule {
-
-	@Provides
-	@ServerScope
-	PlayerManager providePlayerManager() {
-		return new PlayerManager();
-	}
-}

server/src/main/java/mc/server/di/ServerComponent.java

@@ -1,18 +1,14 @@
 package mc.server.di;
 
 import dagger.Component;
-import mc.protocol.di.ServerScope;
 import mc.server.PacketHandler;
 import mc.server.config.Config;
-import mc.server.service.PlayerManager;
 
 @Component(modules = {
-		ConfigModule.class, PacketHandlerModule.class, WorldModule.class, PlayersModule.class
+		ConfigModule.class, PacketHandlerModule.class
 })
-@ServerScope
 public interface ServerComponent {
 
 	Config getConfig();
 	PacketHandler getPacketHandler();
-	PlayerManager getPlayerManager();
 }

server/src/main/java/mc/server/di/WorldModule.java

@@ -1,17 +0,0 @@
-package mc.server.di;
-
-import dagger.Module;
-import dagger.Provides;
-import mc.protocol.di.ServerScope;
-import mc.protocol.world.World;
-import mc.server.world.VoidWorld;
-
-@Module
-public class WorldModule {
-
-	@Provides
-	@ServerScope
-	public World provideWorld() {
-		return new VoidWorld();
-	}
-}

server/src/main/java/mc/server/service/PlayerManager.java

@@ -1,29 +0,0 @@
-package mc.server.service;
-
-import mc.protocol.api.ConnectionContext;
-import mc.protocol.model.Location;
-import mc.protocol.utils.GameMode;
-import mc.server.Player;
-
-import java.util.LinkedList;
-import java.util.UUID;
-
-public class PlayerManager {
-
-	private final LinkedList<Player> players = new LinkedList<>();
-
-	public Player addAndCreate(ConnectionContext context, String name, GameMode gameMode, Location location) {
-		context.setUsedContext(true);
-		Player player = new Player(context, UUID.randomUUID(), name, gameMode, location);
-		players.add(player);
-		return player;
-	}
-
-	public void remove(Player player) {
-		players.remove(player);
-	}
-
-	public int online() {
-		return players.size();
-	}
-}

server/src/main/java/mc/server/world/VoidChunk.java

@@ -1,13 +0,0 @@
-package mc.server.world;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-import mc.protocol.world.Chunk;
-
-@RequiredArgsConstructor
-@Getter
-public class VoidChunk implements Chunk {
-
-	private final int x;
-	private final int z;
-}

server/src/main/java/mc/server/world/VoidWorld.java

@@ -1,26 +0,0 @@
-package mc.server.world;
-
-import mc.protocol.model.Location;
-import mc.protocol.utils.LevelType;
-import mc.protocol.world.Chunk;
-import mc.protocol.world.World;
-
-public class VoidWorld implements World {
-
-	private static final Location spawn = new Location(7d, 130d, 7d);
-
-	@Override
-	public LevelType getLevelType() {
-		return LevelType.FLAT;
-	}
-
-	@Override
-	public Location getSpawn() {
-		return VoidWorld.spawn;
-	}
-
-	@Override
-	public Chunk getChunk(int x, int z) {
-		return new VoidChunk(x, z);
-	}
-}

server/src/main/resources/config-sample.yml

@@ -10,14 +10,9 @@ disconnect-reason: '&4Server is not available.'
 
 players:
   max-online: 0
-  fake-online:
+  online: 0
-    enable: false
-    value: 0
 
 # Размер значка: 64x64 px
 icon:
   enable: false
-  path: favicon.png
+  path: favicon.png
-
-world:
-  view-distance: 1