added sniffer_state property

api/src/main/java/lol/pyr/znpcsplus/util/SnifferState.java

@@ -0,0 +1,11 @@
+package lol.pyr.znpcsplus.util;
+
+public enum SnifferState {
+    IDLING,
+    FEELING_HAPPY,
+    SCENTING,
+    SNIFFING,
+    SEARCHING,
+    DIGGING,
+    RISING
+}

plugin/src/main/java/lol/pyr/znpcsplus/ZNpcsPlus.java

@@ -279,6 +279,7 @@ public class ZNpcsPlus extends JavaPlugin {
         registerEnumParser(manager, PuffState.class, incorrectUsageMessage);
         registerEnumParser(manager, LookType.class, incorrectUsageMessage);
         registerEnumParser(manager, TropicalFishVariant.TropicalFishPattern.class, incorrectUsageMessage);
+        registerEnumParser(manager, SnifferState.class, incorrectUsageMessage);
 
         manager.registerCommand("npc", new MultiCommand(loadHelpMessage("root"))
                 .addSubcommand("center", new CenterCommand(npcRegistry))

plugin/src/main/java/lol/pyr/znpcsplus/entity/EntityPropertyRegistryImpl.java

@@ -77,6 +77,7 @@ public class EntityPropertyRegistryImpl implements EntityPropertyRegistry {
         registerEnumSerializer(PandaGene.class);
         registerEnumSerializer(PuffState.class);
         registerEnumSerializer(TropicalFishVariant.TropicalFishPattern.class);
+        registerEnumSerializer(SnifferState.class);
 
         registerPrimitiveSerializers(Integer.class, Boolean.class, Double.class, Float.class, Long.class, Short.class, Byte.class, String.class);
 

plugin/src/main/java/lol/pyr/znpcsplus/entity/properties/SnifferStateProperty.java

@@ -0,0 +1,30 @@
+package lol.pyr.znpcsplus.entity.properties;
+
+import com.github.retrooper.packetevents.protocol.entity.data.EntityData;
+import com.github.retrooper.packetevents.protocol.entity.data.EntityDataTypes;
+import lol.pyr.znpcsplus.entity.EntityPropertyImpl;
+import lol.pyr.znpcsplus.entity.PacketEntity;
+import lol.pyr.znpcsplus.util.SnifferState;
+import org.bukkit.entity.Player;
+
+import java.util.Map;
+
+public class SnifferStateProperty extends EntityPropertyImpl<SnifferState> {
+    private final int index;
+
+    public SnifferStateProperty(int index) {
+        super("sniffer_state", SnifferState.IDLING, SnifferState.class);
+        this.index = index;
+    }
+
+    @Override
+    public void apply(Player player, PacketEntity entity, boolean isSpawned, Map<Integer, EntityData> properties) {
+        SnifferState state = entity.getProperty(this);
+        if (state == null) return;
+        try {
+            properties.put(index, newEntityData(index, EntityDataTypes.SNIFFER_STATE, com.github.retrooper.packetevents.protocol.entity.sniffer.SnifferState.valueOf(state.name())));
+        } catch (IllegalArgumentException e) {
+            // ignore
+        }
+    }
+}

plugin/src/main/java/lol/pyr/znpcsplus/npc/NpcTypeRegistryImpl.java

@@ -352,7 +352,8 @@ public class NpcTypeRegistryImpl implements NpcTypeRegistry {
         if (!version.isNewerThanOrEquals(ServerVersion.V_1_20)) return;
 
         register(builder(p, "sniffer", EntityTypes.SNIFFER)
-                .setHologramOffset(0.125));
+                .setHologramOffset(0.125)
+                .addProperties("sniffer_state"));
 
         register(builder(p, "camel", EntityTypes.CAMEL)
                 .setHologramOffset(0.25)