PlayerAbilitiesPacket

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

@@ -50,7 +50,8 @@ public enum State {
 			// client bound
 			Map.of(
 					JoinGamePacket.class, 0x23,
-					SpawnPositionPacket.class, 0x46
+					SpawnPositionPacket.class, 0x46,
+					PlayerAbilitiesPacket.class,0x2C
 			)
 	);
 

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

@@ -0,0 +1,60 @@
+package mc.protocol.packets.server;
+
+import lombok.Data;
+import mc.protocol.io.NetByteBuf;
+import mc.protocol.packets.ServerSidePacket;
+
+/**
+ * Характеристики игрока.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD                        | TYPE     | NOTES                                   |
+ * |------------------------------|----------|-----------------------------------------|
+ * | Flags                        | Byte     | Битовая маска флагов. См. ниже значения |
+ * | Flying Speed                 | Float    | Скорость полёта                         |
+ * | Field of View (FOV) Modifier | Float    | Поле зрения                             |
+ * </pre>
+ *
+ * <p>Флаги "Flags"</p>
+ * <pre>
+ * Bit 0x01 - Неуязвимость (Invulnerable)
+ * Bit 0x02 - В полёте (Flying)
+ * Bit 0x04 - Может летать (Allow Flying)
+ * Bit 0x08 - Creative Mode (Instant Break)
+ * </pre>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Player_Abilities_.28clientbound.29">Player Abilities</a>
+ */
+@Data
+public class PlayerAbilitiesPacket implements ServerSidePacket {
+
+	@SuppressWarnings("java:S116")
+	private byte $flags = 0;
+	private float flyingSpeed;
+	private float fieldOfView;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeByte(this.$flags);
+		netByteBuf.writeFloat(this.flyingSpeed);
+		netByteBuf.writeFloat(this.fieldOfView);
+	}
+
+	//FIXME использование value значений
+	public void setInvulnerable(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x01);
+	}
+
+	public void setFlying(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x02);
+	}
+
+	public void setCatFly(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x04);
+	}
+
+	public void setCreativeMode(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x08);
+	}
+}

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

@@ -9,10 +9,7 @@ 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.JoinGamePacket;
-import mc.protocol.packets.server.LoginSuccessPacket;
-import mc.protocol.packets.server.SpawnPositionPacket;
-import mc.protocol.packets.server.StatusServerResponse;
+import mc.protocol.packets.server.*;
 import mc.protocol.serializer.TextSerializer;
 import mc.server.config.Config;
 import org.apache.commons.io.IOUtils;
@@ -86,6 +83,17 @@ public class PacketHandler {
 		log.info("{}", spawnPositionPacket);
 		channel.getCtx().write(spawnPositionPacket);
 
+		PlayerAbilitiesPacket playerAbilitiesPacket = new PlayerAbilitiesPacket();
+		playerAbilitiesPacket.setCatFly(true);
+		playerAbilitiesPacket.setFlying(true);
+		playerAbilitiesPacket.setCreativeMode(false);
+		playerAbilitiesPacket.setInvulnerable(true);
+		playerAbilitiesPacket.setFieldOfView(0.0f);
+		playerAbilitiesPacket.setFlyingSpeed(0.05f);
+
+		log.info("{}", playerAbilitiesPacket);
+		channel.getCtx().write(playerAbilitiesPacket);
+
 		channel.getCtx().flush();
 	}