CCloseWindowPacket

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

@@ -46,6 +46,7 @@ public enum State {
 			Map.of(
 					0x00, TeleportConfirmPacket.class,
 					0x04, ClientSettingsPacket.class,
+					0x08, CCloseWindowPacket.class,
 					0x09, PluginMessagePacket.class,
 					0x0B, PingPacket.class,
 					0x0D, PlayerPositionPacket.class,
@@ -55,12 +56,12 @@ public enum State {
 			),
 			// client bound
 			Map.of(
+					OpenWindowPacket.class, 0x13,
 					PingPacket.class, 0x1F,
 					ChunkDataPacket.class, 0x20,
 					JoinGamePacket.class, 0x23,
 					PlayerAbilitiesPacket.class,0x2C,
 					SPlayerPositionAndLookPacket.class, 0x2F,
-					UpdateHealthPacket.class, 0x41,
 					SpawnPositionPacket.class, 0x46
 			)
 	);

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

@@ -0,0 +1,46 @@
+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.packets.server.OpenWindowPacket;
+
+/**
+ * Close window packet.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD     | TYPE          | NOTES                     |
+ * |-----------|---------------|---------------------------|
+ * | Window ID | Unsigned Byte | ID окна, которое закрыли. |
+ * </pre>
+ *
+ * <p>
+ *     Vanilla клиент отправляет данный пакет с "Window ID" = 0, при закрытии инвентаря игрока.
+ *     Даже в тех случаях, когда для открытия инвентаря не посылался пакет {@link OpenWindowPacket}
+ * </p>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Close_Window_.28clientbound.29" target="_top">Close Window (serverbound)</a>
+ * @see OpenWindowPacket
+ */
+@NoArgsConstructor
+@Getter
+@EqualsAndHashCode
+@ToString
+public class CCloseWindowPacket implements ClientSidePacket {
+
+	private int windowId;
+
+	@Override
+	public void readSelf(NetByteBuf netByteBuf) {
+		this.windowId = netByteBuf.readUnsignedByte();
+	}
+
+	@Override
+	public void passivate() {
+		this.windowId = 0;
+	}
+}

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

@@ -0,0 +1,45 @@
+package mc.protocol.packets.server;
+
+import lombok.Data;
+import mc.protocol.io.NetByteBuf;
+import mc.protocol.model.text.Text;
+import mc.protocol.packets.ServerSidePacket;
+import mc.protocol.packets.client.CCloseWindowPacket;
+import mc.protocol.serializer.TextSerializer;
+
+/**
+ * Open Window packet.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD           | TYPE          | NOTES                                                        |
+ * |-----------------|---------------|--------------------------------------------------------------|
+ * | Window ID       | Unsigned Byte | Уникальный ID окна                                           |
+ * | Window Type     | String (32)   | Тип окна. [1]                                                |
+ * | Window Title    | Text          | Заголовок окна                                               |
+ * | Number Of Slots | Unsigned Byte | Количество слотов в окне (без учета слотов инвенторя игрока) |
+ * |                 |               | Всегда 0 для окон без хранения (например Anvil)              |
+ *
+ * [1] - <a href="https://wiki.vg/index.php?title=Inventory&oldid=14093">Inventory</a>
+ * </pre>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Open_Window">Open Window</a>
+ * @see <a href="https://wiki.vg/index.php?title=Inventory&oldid=14093">Inventory</a>
+ * @see CCloseWindowPacket
+ */
+@Data
+public class OpenWindowPacket implements ServerSidePacket {
+
+	private int windowId;
+	private String windowType;
+	private Text windowTitle;
+	private int numberOfSlots;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeUnsignedByte(this.windowId);
+		netByteBuf.writeString(this.windowType);
+		netByteBuf.writeString(TextSerializer.toJsonObject(this.windowTitle).toString());
+		netByteBuf.writeUnsignedByte(this.numberOfSlots);
+	}
+}

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

@@ -1,35 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-
-/**
- * Update Health Packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD           | TYPE   | NOTES                            |
- * |-----------------|--------|----------------------------------|
- * | Health          | Float  | 0 = смерть; 20 = полное здоровье |
- * | Food            | VarInt | 0-20                             |
- * | Food Saturation | Float  | 0-5                              |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Update_Health">Update Health</a>
- * @see <a href="https://minecraft.fandom.com/wiki/Food#Hunger_and_saturation">Food: Hunger and saturation</a>
- */
-@Data
-public class UpdateHealthPacket implements ServerSidePacket {
-
-	private float health;
-	private int food;
-	private float foodSaturation;
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeFloat(this.health);
-		netByteBuf.writeVarInt(this.food);
-		netByteBuf.writeFloat(this.foodSaturation);
-	}
-}

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

@@ -7,6 +7,7 @@ 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;
@@ -26,7 +27,6 @@ import java.util.Base64;
 import java.util.Collections;
 import java.util.Random;
 import java.util.UUID;
-import java.util.concurrent.TimeUnit;
 
 @Slf4j
 @RequiredArgsConstructor
@@ -68,7 +68,6 @@ public class PacketHandler {
 		context.sendNow(response);
 	}
 
-	@SuppressWarnings("java:S2189")
 	public void onLoginStart(ConnectionContext context, LoginStartPacket loginStartPacket) {
 		var loginSuccessPacket = new LoginSuccessPacket();
 		loginSuccessPacket.setUuid(UUID.randomUUID());
@@ -127,29 +126,13 @@ public class PacketHandler {
 
 		// -- Эксперименты -- //
 
-		var updateHealthPacket = new UpdateHealthPacket();
-		updateHealthPacket.setHealth(0.1f);
-		updateHealthPacket.setFood(0);
-		updateHealthPacket.setFoodSaturation(5.0f);
+		var openWindowPacket = new OpenWindowPacket();
+		openWindowPacket.setWindowId(random.nextInt());
+		openWindowPacket.setWindowType("minecraft:chest");
+		openWindowPacket.setWindowTitle(Text.of("Some Title"));
+		openWindowPacket.setNumberOfSlots(9);
 
-		context.sendNow(updateHealthPacket);
-
-		while (true) {
-			context.sendNow(updateHealthPacket);
-
-			updateHealthPacket.setHealth(updateHealthPacket.getHealth() + 1.0f);
-			updateHealthPacket.setFood(updateHealthPacket.getFood() + 1);
-			if (updateHealthPacket.getHealth() > 20.0f) {
-				updateHealthPacket.setHealth(0.1f);
-				updateHealthPacket.setFood(0);
-			}
-
-			try {
-				TimeUnit.MILLISECONDS.sleep(50);
-			} catch (InterruptedException e) {
-				break;
-			}
-		}
+		context.sendNow(openWindowPacket);
 	}
 
 	private static String faviconToBase64(Path iconPath) {