Fix compatibility with hardcore mode on lower versions.

src/main/java/me/lokka30/phantomworlds/comatibility/VersionCompatibility.java

@@ -18,6 +18,7 @@
  */
 
 import org.bukkit.NamespacedKey;
+import org.bukkit.World;
 import org.bukkit.potion.PotionEffectType;
 
 import java.util.ArrayList;
@@ -58,4 +59,22 @@ default List<String> potionEffectSuggestions() {
   default PotionEffectType findType(final String effectType) {
     return PotionEffectType.getByKey(NamespacedKey.fromString(effectType));
   }
+
+  /**
+   * Used to check if world is hardcore or not.
+   * @param world The world to check.
+   * @return True if hardcore, otherwise false.
+   */
+  default boolean hardcore(final World world) {
+    return world.isHardcore();
+  }
+
+  /**
+   * Used to apply the hardcore value to the world.
+   * @param world The world to apply to.
+   * @param hardcore Hardcore value to set for the world.
+   */
+  default void applyHardcore(World world, final boolean hardcore) {
+    world.setHardcore(hardcore);
+  }
 }

src/main/java/me/lokka30/phantomworlds/comatibility/impl/OneSeventeenCompatibility.java

@@ -18,6 +18,7 @@
  */
 
 import me.lokka30.phantomworlds.comatibility.VersionCompatibility;
+import org.bukkit.World;
 import org.bukkit.potion.PotionEffectType;
 
 import java.util.ArrayList;
@@ -64,4 +65,27 @@ public List<String> potionEffectSuggestions() {
   public PotionEffectType findType(String effectType) {
     return PotionEffectType.getByName(effectType);
   }
+
+  /**
+   * Used to check if world is hardcore or not.
+   *
+   * @param world The world to check.
+   *
+   * @return True if hardcore, otherwise false.
+   */
+  @Override
+  public boolean hardcore(World world) {
+    return false;
+  }
+
+  /**
+   * Used to apply the hardcore value to the world.
+   *
+   * @param world    The world to apply to.
+   * @param hardcore Hardcore value to set for the world.
+   */
+  @Override
+  public void applyHardcore(World world, boolean hardcore) {
+    //do nothing, not applicable to these versions.
+  }
 }

src/main/java/me/lokka30/phantomworlds/commands/sub/ImportCommand.java

@@ -63,7 +63,7 @@ public static void onCommand(final CommandSender sender, final World world) {
 
     final PhantomWorld pworld = new PhantomWorld(
             world.getName(), world.getEnvironment(), world.canGenerateStructures(), null,
-            null, world.isHardcore(), world.getSeed(), world.getWorldType(), world.getAllowMonsters(),
+            null, PhantomWorlds.compatibility().hardcore(world), world.getSeed(), world.getWorldType(), world.getAllowMonsters(),
             world.getAllowAnimals(), world.getKeepSpawnInMemory(), world.getPVP(), world.getDifficulty(), GameMode.SURVIVAL
     );
     pworld.save();

src/main/java/me/lokka30/phantomworlds/listeners/player/PlayerTeleportListener.java

@@ -56,9 +56,9 @@ public void onPortal(PlayerTeleportEvent event) {
       event.setCancelled(true);
     }
 
-    if(!event.getPlayer().isOp() && event.getPlayer().hasPermission("phantomworlds.world.deny." + event.getTo().getWorld().getName())) {
+    /*if(!event.getPlayer().isOp() && event.getPlayer().hasPermission("phantomworlds.world.deny." + event.getTo().getWorld().getName())) {
       event.setCancelled(true);
-    }
+    }*/
 
     if(plugin.worldManager.tpAwaiting.containsKey(event.getPlayer().getUniqueId())) {
       if(event.isCancelled()) {

src/main/java/me/lokka30/phantomworlds/world/PhantomWorld.java

@@ -121,6 +121,8 @@ public void create() {
     world.setKeepSpawnInMemory(keepSpawnInMemory);
     world.setPVP(allowPvP);
     world.setDifficulty(difficulty);
+
+    PhantomWorlds.compatibility().applyHardcore(world, hardcore);
   }
 
   public void save() {