TimeUpdatePacket

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

@@ -60,8 +60,8 @@ public enum State {
 					JoinGamePacket.class, 0x23,
 					PlayerAbilitiesPacket.class,0x2C,
 					SPlayerPositionAndLookPacket.class, 0x2F,
-					UpdateHealthPacket.class, 0x41,
-					SpawnPositionPacket.class, 0x46
+					SpawnPositionPacket.class, 0x46,
+					TimeUpdatePacket.class, 0x47
 			)
 	);
 

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

@@ -0,0 +1,45 @@
+package mc.protocol.packets.server;
+
+import lombok.Data;
+import mc.protocol.io.NetByteBuf;
+import mc.protocol.packets.ServerSidePacket;
+
+/**
+ * Обновление времени суток.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD       | TYPE | NOTES                                  |
+ * |-------------|------|----------------------------------------|
+ * | World Age   | Long | Время жизни мира. В тиках (tick)       |
+ * | Time of day | Long | Суточное время в тиках (tick), 0-24000 |
+ * </pre>
+ *
+ * <p>
+ *     Каждую секунду происходит 20 тиков.
+ *     В игровых сутках 24000 тиков, т.е. игровые сутки в Minecraft длятся 20 минут.
+ *     В Vanilla сервере значение "Time of day" увеличивается на 20 единиц каждую секунду.
+ * </p>
+ *
+ * <p>Временные промежутки:</p>
+ * <ul>
+ *     <li>0 - восход солнца</li>
+ *     <li>6000 - полдень</li>
+ *     <li>12000 - закат</li>
+ *     <li>18000 - полночь</li>
+ * </ul>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Time_Update">Time Update</a>
+ */
+@Data
+public class TimeUpdatePacket implements ServerSidePacket {
+
+	private long worldAge;
+	private long timeOfDay;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeLong(this.worldAge);
+		netByteBuf.writeLong(this.timeOfDay);
+	}
+}

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

@@ -127,25 +127,21 @@ public class PacketHandler {
 
 		// -- Эксперименты -- //
 
-		var updateHealthPacket = new UpdateHealthPacket();
-		updateHealthPacket.setHealth(0.1f);
-		updateHealthPacket.setFood(0);
-		updateHealthPacket.setFoodSaturation(5.0f);
-
-		context.sendNow(updateHealthPacket);
+		var timeUpdatePacket = new TimeUpdatePacket();
+		timeUpdatePacket.setWorldAge(0);
+		timeUpdatePacket.setTimeOfDay(0);
 
 		while (true) {
-			context.sendNow(updateHealthPacket);
+			context.sendNow(timeUpdatePacket);
 
-			updateHealthPacket.setHealth(updateHealthPacket.getHealth() + 1.0f);
-			updateHealthPacket.setFood(updateHealthPacket.getFood() + 1);
-			if (updateHealthPacket.getHealth() > 20.0f) {
-				updateHealthPacket.setHealth(0.1f);
-				updateHealthPacket.setFood(0);
+			timeUpdatePacket.setTimeOfDay(timeUpdatePacket.getTimeOfDay() + 20);
+			if (timeUpdatePacket.getTimeOfDay() >= 24_000) {
+				timeUpdatePacket.setWorldAge(timeUpdatePacket.getWorldAge() + 1);
+				timeUpdatePacket.setTimeOfDay(0);
 			}
 
 			try {
-				TimeUnit.MILLISECONDS.sleep(50);
+				TimeUnit.MILLISECONDS.sleep(5);
 			} catch (InterruptedException e) {
 				break;
 			}