UpdateHealthPacket

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

@@ -60,7 +60,7 @@ public enum State {
 					JoinGamePacket.class, 0x23,
 					PlayerAbilitiesPacket.class,0x2C,
 					SPlayerPositionAndLookPacket.class, 0x2F,
-					SetExperiencePacket.class, 0x40,
+					UpdateHealthPacket.class, 0x41,
 					SpawnPositionPacket.class, 0x46
 			)
 	);

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

@@ -1,35 +0,0 @@
-package mc.protocol.packets.server;
-
-import lombok.Data;
-import mc.protocol.io.NetByteBuf;
-import mc.protocol.packets.ServerSidePacket;
-
-/**
- * Set Experience packet.
- *
- * <p>Структура пакета</p>
- * <pre>
- * | FIELD            | TYPE     | NOTES                  |
- * |------------------|----------|------------------------|
- * | Experience bar   | Float    | Значение от 0.0 до 1.0 |
- * | Level            | VarInt   |                        |
- * | Total Experience | VarInt   |                        |
- * </pre>
- *
- * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Set_Experience">Set Experience</a>
- * @see <a href="https://minecraft.fandom.com/wiki/Experience#Leveling_up">Experience: Leveling up</a>
- */
-@Data
-public class SetExperiencePacket implements ServerSidePacket {
-
-	private float experienceBar;
-	private int level;
-	private int totalExperience;
-
-	@Override
-	public void writeSelf(NetByteBuf netByteBuf) {
-		netByteBuf.writeFloat(this.experienceBar);
-		netByteBuf.writeVarInt(this.level);
-		netByteBuf.writeVarInt(this.totalExperience);
-	}
-}

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

@@ -0,0 +1,35 @@
+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

@@ -2,8 +2,7 @@ package mc.server;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import mc.protocol.ProtocolConstant;
+import mc.protocol.*;
-import mc.protocol.State;
 import mc.protocol.api.ConnectionContext;
 import mc.protocol.model.Location;
 import mc.protocol.model.Look;
@@ -128,23 +127,25 @@ public class PacketHandler {
 
 		// -- Эксперименты -- //
 
-		var setExperiencePacket = new SetExperiencePacket();
+		var updateHealthPacket = new UpdateHealthPacket();
-		setExperiencePacket.setExperienceBar(0f);
+		updateHealthPacket.setHealth(0.1f);
-		setExperiencePacket.setLevel(0);
+		updateHealthPacket.setFood(0);
-		setExperiencePacket.setTotalExperience(100);
+		updateHealthPacket.setFoodSaturation(5.0f);
+
+		context.sendNow(updateHealthPacket);
 
 		while (true) {
-			context.sendNow(setExperiencePacket);
+			context.sendNow(updateHealthPacket);
 
-			setExperiencePacket.setExperienceBar(setExperiencePacket.getExperienceBar() + 0.01f);
+			updateHealthPacket.setHealth(updateHealthPacket.getHealth() + 1.0f);
-			setExperiencePacket.setLevel(setExperiencePacket.getLevel() + 1);
+			updateHealthPacket.setFood(updateHealthPacket.getFood() + 1);
-			if (setExperiencePacket.getExperienceBar() > 1.0f) {
+			if (updateHealthPacket.getHealth() > 20.0f) {
-				setExperiencePacket.setExperienceBar(0f);
+				updateHealthPacket.setHealth(0.1f);
-				setExperiencePacket.setLevel(0);
+				updateHealthPacket.setFood(0);
 			}
 
 			try {
-				TimeUnit.MILLISECONDS.sleep(10);
+				TimeUnit.MILLISECONDS.sleep(50);
 			} catch (InterruptedException e) {
 				break;
 			}