added nether prevent

varo/src/main/java/eu/mhsl/craftattack/spawn/varo/appliances/metaGameplay/netherPrevent/NetherPrevent.java

@@ -0,0 +1,16 @@
+package eu.mhsl.craftattack.spawn.varo.appliances.metaGameplay.netherPrevent;
+
+import eu.mhsl.craftattack.core.appliance.Appliance;
+import org.bukkit.event.Listener;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public class NetherPrevent extends Appliance {
+    @Override
+    protected @NotNull List<Listener> listeners() {
+        return List.of(
+            new NetherPreventListener()
+        );
+    }
+}

varo/src/main/java/eu/mhsl/craftattack/spawn/varo/appliances/metaGameplay/netherPrevent/NetherPreventListener.java

@@ -0,0 +1,29 @@
+package eu.mhsl.craftattack.spawn.varo.appliances.metaGameplay.netherPrevent;
+
+import eu.mhsl.craftattack.core.appliance.ApplianceListener;
+import org.bukkit.Material;
+import org.bukkit.World;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.block.BlockPlaceEvent;
+import org.bukkit.event.player.PlayerPortalEvent;
+import org.bukkit.event.world.PortalCreateEvent;
+
+public class NetherPreventListener extends ApplianceListener<NetherPrevent> {
+    @EventHandler
+    public void onPortalPlace(BlockPlaceEvent event) {
+        if(!event.getBlockPlaced().getType().equals(Material.NETHER_PORTAL)) return;
+        event.setCancelled(true);
+    }
+
+    @EventHandler
+    public void onPortalCreate(PortalCreateEvent event) {
+        if(!event.getReason().equals(PortalCreateEvent.CreateReason.FIRE)) return;
+        event.setCancelled(true);
+    }
+
+    @EventHandler
+    public void onPlayerPortal(PlayerPortalEvent event) {
+        if(!event.getTo().getWorld().getEnvironment().equals(World.Environment.NETHER)) return;
+        event.setCancelled(true);
+    }
+}