compatibility with PetDragon

src/main/java/pers/xanadu/enderdragon/hook/HookManager.java

@@ -1,5 +1,6 @@
 package pers.xanadu.enderdragon.hook;
 
+import lombok.Getter;
 import me.clip.placeholderapi.PlaceholderAPI;
 import org.bukkit.OfflinePlayer;
 import pers.xanadu.enderdragon.config.Lang;
@@ -9,12 +10,18 @@ import static pers.xanadu.enderdragon.EnderDragon.*;
 
 public class HookManager {
     private static boolean papi = false;
+    @Getter
+    private static boolean petDragonInstalled = false;
     public static void init(){
         if(pm.getPlugin("PlaceholderAPI") != null){
             Lang.info("Hooking to PlaceholderAPI...");
             new Papi(getInstance());
             papi = true;
         }
+        if (pm.getPlugin("PetDragon") != null){
+            Lang.info("Hooking to PetDragon...");
+            petDragonInstalled = true;
+        }
     }
     public static boolean isPlaceholderAPILoaded(){
         return papi;

src/main/java/pers/xanadu/enderdragon/listener/DragonSpawnListener.java

@@ -1,5 +1,6 @@
 package pers.xanadu.enderdragon.listener;
 
+import com.ericdebouwer.petdragon.api.PetDragonAPI;
 import org.bukkit.Bukkit;
 import org.bukkit.World;
 import org.bukkit.attribute.Attribute;
@@ -15,8 +16,8 @@ import org.bukkit.event.entity.CreatureSpawnEvent;
 import pers.xanadu.enderdragon.config.Config;
 import pers.xanadu.enderdragon.config.Lang;
 import pers.xanadu.enderdragon.event.DragonRespawnPostEvent;
+import pers.xanadu.enderdragon.hook.HookManager;
 import pers.xanadu.enderdragon.manager.DamageManager;
-import pers.xanadu.enderdragon.manager.DragonManager;
 import pers.xanadu.enderdragon.manager.WorldManager;
 import pers.xanadu.enderdragon.metadata.DragonInfo;
 import pers.xanadu.enderdragon.metadata.MyDragon;
@@ -33,6 +34,10 @@ public class DragonSpawnListener implements Listener {
     @EventHandler(priority = EventPriority.LOW)
     public void OnDragonSpawn(final CreatureSpawnEvent e){
         if(!(e.getEntity() instanceof EnderDragon)) return;
+        //compatibility with plugin PetDragon
+        if (HookManager.isPetDragonInstalled()){
+            if (PetDragonAPI.getInstance().isPetDragon(e.getEntity())) return;
+        }
         if(!WorldManager.enable_worlds.contains(e.getEntity().getWorld().getName())) return;
         if(Config.blacklist_spawn_reason.contains(e.getSpawnReason().name())) return;
         EnderDragon dragon = (EnderDragon) e.getEntity();

src/main/resources/plugin.yml

@@ -7,6 +7,7 @@ softdepend:
   - MMOItems
   - MythicLib
   - PlaceholderAPI
+  - PetDragon
 commands:
   enderdragon:
     description: "EnderDragon Command"