Disable void falling and entity damage

src/main/java/wtf/beatrice/limbomanager/listeners/PlayerChecker.java

@@ -6,6 +6,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
+import org.bukkit.event.entity.EntityDamageEvent;
 import org.bukkit.event.entity.EntitySpawnEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
@@ -58,4 +59,10 @@ public class PlayerChecker implements Listener
             event.setCancelled(true);
         }
     }
+
+    @EventHandler
+    public void onEntityDamage(EntityDamageEvent event)
+    {
+        event.setCancelled(true);
+    }
 }

src/main/java/wtf/beatrice/limbomanager/objects/LocationCheckRunnable.java

@@ -54,6 +54,13 @@ public class LocationCheckRunnable implements Runnable
         islandSpawnCoordinates.setX(islandSpawnCoordinates.getX() + spawnOffsetX);
         islandSpawnCoordinates.setZ(islandSpawnCoordinates.getZ() + spawnOffsetZ);
 
+        // boolean to know if after the different checks we have to teleport the player
+        boolean teleport = false;
+
+        // check if player is free-falling into the void
+        if(playerLocation.getBlockY() <= playerLocation.getWorld().getMinHeight())
+            teleport = true;
+
 
         // calculate absolute distance from spawnpoint
         int distanceX = Math.abs(playerLocation.getBlockX() - islandSpawnCoordinates.getX());
@@ -61,11 +68,12 @@ public class LocationCheckRunnable implements Runnable
 
         // check if player is inside bounds
         if(distanceX > Cache.islandWalkingRange || distanceZ > Cache.islandWalkingRange)
+            teleport = true;
+
+        if(teleport)
         {
             LocationUtils.teleportToOwnIsland(player);
             player.sendMessage("Out of bounds");
-
-
         }
     }
 }