TitlePacket

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

@@ -56,14 +56,11 @@ public enum State {
 			Map.of(
 					PingPacket.class, 0x1F,
 					JoinGamePacket.class, 0x23,
-					ScoreboardDisplayPacket.class, 0x3B,
-					ScoreboardObjectivePacket.class, 0x42,
-					TeamsPacket.class, 0x44,
-					ScoreboardUpdateScorePacket.class, 0x45,
 					SpawnPositionPacket.class, 0x46,
 					ChunkDataPacket.class, 0x20,
 					PlayerAbilitiesPacket.class,0x2C,
-					SPlayerPositionAndLookPacket.class, 0x2F
+					SPlayerPositionAndLookPacket.class, 0x2F,
+					TitlePacket.class, 0x48
 			)
 	);
 

protocol/src/main/java/mc/protocol/io/NetByteBuf.java

@@ -99,11 +99,6 @@ public class NetByteBuf extends ByteBuf {
 	}
 
 	public void writeString(String string) {
-		if (string == null) {
-			writeVarInt(0);
-			return;
-		}
-
 		byte[] buf = string.getBytes(StandardCharsets.UTF_8);
 
 		if (buf.length > Short.MAX_VALUE) {

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

@@ -1,39 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-
-/**
- * Отображение Scoreboard.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD      | TYPE        | NOTES                          |
- * |------------|-------------|--------------------------------|
- * | Position   | Byte        | Положение:                     |
- * |            |             | 0 - list                       |
- * |            |             | 1 - sidebar                    |
- * |            |             | 2 - below name                 |
- * |            |             | 3-18 - team specific sidebar   |
- * | Score Name | String (16) | Уникальное название Scoreboard |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Display_Scoreboard" target="_top">Display Scoreboard</a>
- */
-@Data
-public class ScoreboardDisplayPacket implements ServerSidePacket {
-
-	private int position;
-	private String scoreName;
-
-	public void setPosition(int position) {
-		this.position = (position < 0) ? 0 : (Math.min(position, 18));
-	}
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeByte(this.position);
-		netByteBuf.writeString(this.scoreName);
-	}
-}

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

@@ -1,44 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-import mc.protocol.utils.ScoreboardObjectiveMode;
-import mc.protocol.utils.ScoreboardObjectiveType;
-
-/**
- * Scoreboard objective packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD           | TYPE        | NOTES                                             |
- * |-----------------|-------------|---------------------------------------------------|
- * | Objective Name  | String (16) | Уникальное наименование цели (objective)          |
- * | Mode            | Byte        | 0 - создание Scoreboard                           |
- * |                 |             | 1 - удаление Scoreboard                           |
- * |                 |             | 2 - обновление Scoreboard                         |
- * | Objective Value | String (32) | Если "Mode" равен 0 или 2. Отображаемый текст     |
- * | Type            | String (16) | Если "Mode" равен 0 или 2. "integer" или "hearts" |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Scoreboard_Objective" target="_top">Scoreboard Objective</a>
- */
-@Data
-public class ScoreboardObjectivePacket implements ServerSidePacket {
-
-	private String objectiveName;
-	private ScoreboardObjectiveMode mode;
-	private String objectiveValue;
-	private ScoreboardObjectiveType type;
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeString(this.objectiveName);
-		netByteBuf.writeByte(this.mode.getCode());
-
-		if (ScoreboardObjectiveMode.CREATE.equals(this.mode) || ScoreboardObjectiveMode.UPDATE.equals(this.mode)) {
-			netByteBuf.writeString(this.objectiveValue);
-			netByteBuf.writeString(this.type.name().toLowerCase());
-		}
-	}
-}

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

@@ -1,43 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-import mc.protocol.utils.ScoreboardUpdateScoreAction;
-
-/**
- * Update score packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD           | TYPE        | NOTES                                              |
- * |-----------------|-------------|--------------------------------------------------- |
- * | Entity Name     | String (40) | Сущность, которой принадлежит счет (score).        |
- * |                 |             | Для Игроков - это ник                              |
- * |                 |             | Для других сущностей - это UUID                    |
- * | Action          | Byte        | 0 - создать или обновить счет (score); 1 - удалить |
- * | Objective Name  | String (16) | Имя сущности, которой принадлежит счет (score)     |
- * | Value           | VarInt      | Если "Action" = 0. Значение счета (score)          |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Update_Score" target="_top">Update Score</a>
- */
-@Data
-public class ScoreboardUpdateScorePacket implements ServerSidePacket {
-
-	private String entityName;
-	private ScoreboardUpdateScoreAction action;
-	private String objective;
-	private int value;
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeString(this.entityName);
-		netByteBuf.writeByte(this.action.getCode());
-		netByteBuf.writeString(this.objective);
-
-		if (ScoreboardUpdateScoreAction.CREATE_OR_UPDATE.equals(this.action)) {
-			netByteBuf.writeVarInt(this.value);
-		}
-	}
-}

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

@@ -1,119 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-import mc.protocol.utils.TeamsCollisionRule;
-import mc.protocol.utils.TeamsMode;
-import mc.protocol.utils.TeamsNameTagVisibility;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Teams packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD       | TYPE        | NOTES                                                 |
- * |------------ |-------------|-------------------------------------------------------|
- * | Team Name   | String (16) | Уникальное название команды (совместно со scoreboard) |
- * | Mode        | Byte        | Режим. Определяет остальые поля пакета                |
- * | Data Fields | -           | Определяется "Mode"                                   |
- * </pre>
- *
- * <p>Варианты "Mode"</p>
- * <pre>
- * | MODE                             | DATA FIELD          | TYPE                 | NOTES                                             |
- * | VALUE | DESCRIPTION              |                     |                      |                                                   |
- * |-------|--------------------------|---------------------|----------------------|---------------------------------------------------|
- * | 0     | create team              | Team Display Name   | String (32)          |                                                   |
- * |       |                          | Team Prefix         | String (16)          | Отображается перед именем игроков текущей команды |
- * |       |                          | Team Suffix         | String (16)          | Отображается после имени игроков текущей команды  |
- * |       |                          | Friendly Flags      | Byte                 | Битовая маска:                                    |
- * |       |                          |                     |                      | 0x01 - разрешён friendly fire                     |
- * |       |                          |                     |                      | 0x02 - могут видеть невидимок своей команды       |
- * |       |                          | Name Tag Visibility | String (32)          | фиксированные значения:                           |
- * |       |                          |                     |                      | - always                                          |
- * |       |                          |                     |                      | - hideForOtherTeams                               |
- * |       |                          |                     |                      | - hideForOwnTeam                                  |
- * |       |                          |                     |                      | - never                                           |
- * |       |                          | Collision Rule      | String (32)          | фиксированные значения:                           |
- * |       |                          |                     |                      | - always                                          |
- * |       |                          |                     |                      | - pushOtherTeams                                  |
- * |       |                          |                     |                      | - pushOwnTeam                                     |
- * |       |                          |                     |                      | - never                                           |
- * |       |                          | Color               | Byte                 | For colors, the same Chat colors (0-15).          |
- * |       |                          |                     |                      | -1 indicates RESET/no color.                      |
- * |       |                          | Entity Count        | VarInt               | Количество элементов в поле "Entities"            |
- * |       |                          | Entities            | Array of String (40) | Уникальные идентификаторы участников команды.     |
- * |       |                          |                     |                      | Для Игроков - это Имена                           |
- * |       |                          |                     |                      | Для любых других сущностей - это UUID             |
- * | 1     | remove team              | -                   | -                    | удаление текущей команды                          |
- * | 2     | update team info         | Team Display Name   | String (32)          |                                                   |
- * |       |                          | Team Prefix         | String (16)          | (см. выше)                                        |
- * |       |                          | Team Suffix         | String (16)          | (см. выше)                                        |
- * |       |                          | Friendly Flags      | Byte                 | (см. выше)                                        |
- * |       |                          | Name Tag Visibility | String (32)          | (см. выше)                                        |
- * |       |                          | Collision Rule      | String (32)          | (см. выше)                                        |
- * |       |                          | Color               | Byte                 | (см. выше)                                        |
- * | 3     | add players to team      | Entity Count        | VarInt               | (см. выше)                                        |
- * |       |                          | Entities            | Array of String (40) | (см. выше)                                        |
- * | 4     | remove players from team | Entity Count        | VarInt               | (см. выше)                                        |
- * |       |                          | Entities            | Array of String (40) | (см. выше)                                        |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Teams" target="_top">Teams</a>
- */
-@Data
-public class TeamsPacket implements ServerSidePacket {
-
-	private final List<String> members = new ArrayList<>();
-
-	private String name;
-	private TeamsMode mode;
-
-	private String displayName;
-	private String prefix;
-	private String suffix;
-	private TeamsNameTagVisibility nameTagVisibility;
-	private TeamsCollisionRule collisionRule;
-	private int color;
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeString(this.name);
-		netByteBuf.writeByte(this.mode.getCode());
-
-		switch (this.mode) {
-			case CREATE:
-				netByteBuf.writeString(this.displayName);
-				netByteBuf.writeString(this.prefix);
-				netByteBuf.writeString(this.suffix);
-				netByteBuf.writeByte(0); // Friendly Flags
-				netByteBuf.writeString(this.nameTagVisibility.getCode());
-				netByteBuf.writeString(this.collisionRule.getCode());
-				netByteBuf.writeByte(this.color);
-				netByteBuf.writeVarInt(this.members.size());
-				this.members.forEach(netByteBuf::writeString);
-				break;
-			case UPDATE:
-				netByteBuf.writeString(this.displayName);
-				netByteBuf.writeString(this.prefix);
-				netByteBuf.writeString(this.suffix);
-				netByteBuf.writeByte(0); // Friendly Flags
-				netByteBuf.writeString(this.nameTagVisibility.getCode());
-				netByteBuf.writeString(this.collisionRule.getCode());
-				netByteBuf.writeByte(this.color);
-				break;
-			case ADD_MEMBER:
-			case REMOVE_MEMBER:
-				netByteBuf.writeVarInt(this.members.size());
-				this.members.forEach(netByteBuf::writeString);
-				break;
-			case REMOVE:
-			default:
-				break;
-		}
-	}
-}

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/ScoreboardObjectiveType.java

@@ -1,6 +0,0 @@
-package mc.protocol.utils;
-
-public enum ScoreboardObjectiveType {
-	INTEGER,
-	HEARTS
-}

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

@@ -1,10 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.experimental.UtilityClass;
-
-@UtilityClass
-public class ScoreboardPosition {
-	public final int LIST = 0;
-	public final int SIDEBAR = 1;
-	public final int BELOW_NAME = 2;
-}

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

@@ -1,13 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-@RequiredArgsConstructor
-public enum ScoreboardUpdateScoreAction {
-	CREATE_OR_UPDATE(0),
-	REMOVE(1);
-
-	@Getter
-	private final int code;
-}

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

@@ -1,15 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-@RequiredArgsConstructor
-public enum TeamsCollisionRule {
-	ALWAYS("always"),
-	PUSH_OTHER_TEAMS("pushOtherTeams"),
-	PUSH_OWN_TEAM("pushOwnTeam"),
-	NEVER("never");
-
-	@Getter
-	private final String code;
-}

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

@@ -1,16 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-@RequiredArgsConstructor
-public enum TeamsMode {
-	CREATE(0),
-	REMOVE(1),
-	UPDATE(2),
-	ADD_MEMBER(3),
-	REMOVE_MEMBER(4);
-
-	@Getter
-	private final int code;
-}

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

@@ -1,15 +0,0 @@
-package mc.protocol.utils;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-@RequiredArgsConstructor
-public enum TeamsNameTagVisibility {
-	ALWAYS("always"),
-	HIDE_FOR_OTHER_TEAMS("hideForOtherTeams"),
-	HIDE_FOR_OWN_TEAM("hideForOwnTeam"),
-	NEVER("never");
-
-	@Getter
-	private final String code;
-}

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

@@ -4,10 +4,13 @@ import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 
 @RequiredArgsConstructor
-public enum ScoreboardObjectiveMode {
-	CREATE(0),
-	REMOVE(1),
-	UPDATE(2);
+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;

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

@@ -7,13 +7,17 @@ import mc.protocol.api.ConnectionContext;
 import mc.protocol.model.Location;
 import mc.protocol.model.Look;
 import mc.protocol.model.ServerInfo;
+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;
 import mc.protocol.packets.server.*;
 import mc.protocol.serializer.TextSerializer;
-import mc.protocol.utils.*;
+import mc.protocol.utils.Difficulty;
+import mc.protocol.utils.GameMode;
+import mc.protocol.utils.LevelType;
+import mc.protocol.utils.TitleAction;
 import mc.server.config.Config;
 import org.apache.commons.io.IOUtils;
 
@@ -66,27 +70,23 @@ public class PacketHandler {
 	}
 
 	public void onLoginStart(ConnectionContext context, LoginStartPacket loginStartPacket) {
-		UUID playerUuid = UUID.randomUUID();
-		int playerEid = random.nextInt();
-		String playerName = loginStartPacket.getName();
-
 		var loginSuccessPacket = new LoginSuccessPacket();
-		loginSuccessPacket.setUuid(playerUuid);
-		loginSuccessPacket.setName(playerName);
+		loginSuccessPacket.setUuid(UUID.randomUUID());
+		loginSuccessPacket.setName(loginStartPacket.getName());
 
 		context.sendNow(loginSuccessPacket);
 		context.setState(State.PLAY);
 
 		var joinGamePacket = new JoinGamePacket();
-		joinGamePacket.setEntityId(playerEid);
-		joinGamePacket.setGameMode(GameMode.SPECTATOR);
+		joinGamePacket.setEntityId(random.nextInt());
+		joinGamePacket.setGameMode(GameMode.SURVIVAL);
 		joinGamePacket.setDimension(0/*Overworld*/);
 		joinGamePacket.setDifficulty(Difficulty.PEACEFUL);
 		joinGamePacket.setLevelType(LevelType.FLAT);
 
 		context.send(joinGamePacket);
 
-		Location spawnLocation = new Location(0d, 63d, 0d);
+		Location spawnLocation = new Location(7d, 130d, 7d);
 
 		var spawnPositionPacket = new SpawnPositionPacket();
 		spawnPositionPacket.setSpawn(spawnLocation);
@@ -125,33 +125,13 @@ public class PacketHandler {
 
 		context.flushSending();
 
-		// --- Эксперименты --- //
+		// -- Эксперименты -- //
 
-		String scoreboardName = "Score::List";
+		var titlePacket = new TitlePacket();
+		titlePacket.setAction(TitleAction.SET_TITLE);
+		titlePacket.setTitle(Text.of("HELLO"));
 
-		var scoreboardObjectivePacket = new ScoreboardObjectivePacket();
-		scoreboardObjectivePacket.setObjectiveName(scoreboardName);
-		scoreboardObjectivePacket.setMode(ScoreboardObjectiveMode.CREATE);
-		scoreboardObjectivePacket.setObjectiveValue(scoreboardName);
-		scoreboardObjectivePacket.setType(ScoreboardObjectiveType.INTEGER);
-
-		context.send(scoreboardObjectivePacket);
-
-		var scoreboardDisplayPacket = new ScoreboardDisplayPacket();
-		scoreboardDisplayPacket.setPosition(ScoreboardPosition.SIDEBAR);
-		scoreboardDisplayPacket.setScoreName(scoreboardName);
-
-		context.send(scoreboardDisplayPacket);
-
-		var scoreboardUpdateScorePacket = new ScoreboardUpdateScorePacket();
-		scoreboardUpdateScorePacket.setEntityName(playerName);
-		scoreboardUpdateScorePacket.setAction(ScoreboardUpdateScoreAction.CREATE_OR_UPDATE);
-		scoreboardUpdateScorePacket.setObjective(scoreboardName);
-		scoreboardUpdateScorePacket.setValue(100500);
-
-		context.send(scoreboardUpdateScorePacket);
-
-		context.flushSending();
+		context.sendNow(titlePacket);
 	}
 
 	private static String faviconToBase64(Path iconPath) {