Fix Piglin bartering animation (Fixes #863)

connector/src/main/java/org/geysermc/connector/entity/living/monster/PiglinEntity.java

@@ -31,6 +31,7 @@ import com.nukkitx.protocol.bedrock.data.entity.EntityData;
 import com.nukkitx.protocol.bedrock.data.entity.EntityFlag;
 import org.geysermc.connector.entity.type.EntityType;
 import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.item.ItemRegistry;
 
 public class PiglinEntity extends MonsterEntity {
 
@@ -56,4 +57,13 @@ public class PiglinEntity extends MonsterEntity {
 
         super.updateBedrockMetadata(entityMetadata, session);
     }
+
+    @Override
+    public void updateEquipment(GeyserSession session) {
+        // Check if the Piglin is holding Gold and set the ADMIRING flag accordingly
+        metadata.getFlags().setFlag(EntityFlag.ADMIRING, offHand.getId() == ItemRegistry.GOLD);
+        super.updateBedrockMetadata(session);
+
+        super.updateEquipment(session);
+    }
 }

connector/src/main/java/org/geysermc/connector/network/translators/item/ItemRegistry.java

@@ -60,6 +60,8 @@ public class ItemRegistry {
     public static final int SHIELD = 829;
     // Boat ID, used in BedrockInventoryTransactionTranslator.java
     public static final int BOAT = 333;
+    // Gold ID, used in PiglinEntity.java
+    public static final int GOLD = 266;
 
     public static int BARRIER_INDEX = 0;