fixed multiple horde tasks being started

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/Bloodmoon.java

@@ -20,7 +20,9 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.potion.PotionEffectType;
+import org.bukkit.scheduler.BukkitTask;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
 import java.util.concurrent.ThreadLocalRandom;
@@ -82,6 +84,7 @@ public class Bloodmoon extends Appliance {
         EntityType.SKELETON,
         EntityType.SPIDER
     );
+    private @Nullable BukkitTask hordeSpawnTask = null;
     private final int bloodmoonLegth = 12000;
     private final int bloodmoonStartTime = 12000;
     private final int daysBetweenBloodmoons = 1;
@@ -115,7 +118,8 @@ public class Bloodmoon extends Appliance {
     }
 
     private void startHordeSpawning(int delay) {
-        Bukkit.getScheduler().runTaskLater(
+        if(this.hordeSpawnTask != null) this.hordeSpawnTask.cancel();
+        this.hordeSpawnTask = Bukkit.getScheduler().runTaskLater(
             Main.instance(),
             () -> {
                 if(!this.bloodmoonIsActive()) return;