ScoreboardUpdateScorePacket

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

@@ -59,6 +59,7 @@ public enum State {
 					ScoreboardDisplayPacket.class, 0x3B,
 					ScoreboardObjectivePacket.class, 0x42,
 					TeamsPacket.class, 0x44,
+					ScoreboardUpdateScorePacket.class, 0x45,
 					SpawnPositionPacket.class, 0x46,
 					ChunkDataPacket.class, 0x20,
 					PlayerAbilitiesPacket.class,0x2C,

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

@@ -0,0 +1,43 @@
+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 entityDisplayName;
+	private int value;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeString(this.entityName);
+		netByteBuf.writeByte(this.action.getCode());
+		netByteBuf.writeString(this.entityDisplayName);
+
+		if (ScoreboardUpdateScoreAction.CREATE_OR_UPDATE.equals(this.action)) {
+			netByteBuf.writeVarInt(this.value);
+		}
+	}
+}

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

@@ -0,0 +1,13 @@
+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;
+}

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

@@ -162,6 +162,13 @@ public class PacketHandler {
 
 		context.send(teamsPacket_Add);
 
+		var scoreboardUpdateScorePacket = new ScoreboardUpdateScorePacket();
+		scoreboardUpdateScorePacket.setEntityName(teamsPacket_Create.getPrefix() + playerName + teamsPacket_Create.getSuffix());
+		scoreboardUpdateScorePacket.setEntityDisplayName(playerName);
+		scoreboardUpdateScorePacket.setAction(ScoreboardUpdateScoreAction.CREATE_OR_UPDATE);
+
+		context.send(scoreboardUpdateScorePacket);
+
 		context.flushSending();
 	}