Use entity (!)

клиент шлет этот пакет только при использовании пр.кнопки мыши

core/src/main/java/mc/core/player/InMemoryPlayerManager.java

@@ -62,6 +62,13 @@ public class InMemoryPlayerManager implements PlayerManager, Runnable {
                 .findFirst();
     }
 
+    @Override
+    public Optional<Player> getPlayerById(final int id) {
+        return players.stream()
+                .filter(player -> player.getId() == id)
+                .findFirst();
+    }
+
     @Override
     public List<Player> getPlayers() {
         return players.stream().filter(Player::isOnline).collect(Collectors.toList());

core/src/main/java/mc/core/player/PlayerManager.java

@@ -15,6 +15,7 @@ public interface PlayerManager {
     void joinServer(Player player);
     void leftServer(Player player);
     Optional<Player> getPlayer(String name);
+    Optional<Player> getPlayerById(int id);
     List<Player> getPlayers();
     int getCountOnlinePlayers();
     NetChannel getBroadcastChannel();

proto125/src/main/java/mc/core/network/proto_125/packets/PacketManager.java

@@ -17,6 +17,7 @@ public class PacketManager {
             .put(0x03, ChatMessagePacket.class)
             .put(0x04, TimeUpdatePacket.class)
             .put(0x06, SpawnPositionPacket.class)
+            .put(0x07, UseEntityPacket.class)
             .put(0x0B, PlayerPositionPacket.class)
             .put(0x0C, PlayerLookPacket.class)
             .put(0x0D, PositionAndLookPacket.class)

proto125/src/main/java/mc/core/network/proto_125/packets/UseEntityPacket.java

@@ -0,0 +1,29 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2018-05-23
+ */
+package mc.core.network.proto_125.packets;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import mc.core.network.CSPacket;
+import mc.core.network.NetStream;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+@ToString
+public class UseEntityPacket implements CSPacket {
+    private int playerId;
+    private int targetId;
+    private boolean leftMouseButton;
+
+    @Override
+    public void readSelf(NetStream netStream) {
+        playerId = netStream.readInt();
+        targetId = netStream.readInt();
+        leftMouseButton = netStream.readBoolean();
+    }
+}

proto125_netty/src/main/java/mc/core/network/proto_125/netty/PacketHandler.java

@@ -292,4 +292,22 @@ public class PacketHandler extends SimpleChannelInboundHandler<CSPacket> {
             pl.getChannel().writeAndFlush(packet);
         });
     }
+
+    private void onUseEntityPacket(Channel channel, UseEntityPacket packet) {
+        Optional<Player> optPlayer = playerManager.getPlayerById(packet.getPlayerId());
+        if (!optPlayer.isPresent()) {
+            log.debug("Player id {} not found");
+            return;
+        }
+        Player player = optPlayer.get();
+
+        optPlayer = playerManager.getPlayerById(packet.getTargetId());
+        if (!optPlayer.isPresent()) {
+            log.debug("Target id {} not found");
+            return;
+        }
+        Player target = optPlayer.get();
+
+        log.info("<{}> {} clicked <{}>", player.getName(), (packet.isLeftMouseButton() ? "left" : "right"), target.getName());
+    }
 }