Merge pull request 'Prevent schem selection DOS' (#381) from prevent-spam into master

Reviewed-on: #381
Reviewed-by: YoyoNow <jwsteam@nidido.de>

FightSystem_Core/src/de/steamwar/fightsystem/fight/HotbarKit.java

@@ -26,6 +26,7 @@ import de.steamwar.fightsystem.FightSystem;
 import de.steamwar.fightsystem.listener.PersonalKitCreator;
 import de.steamwar.fightsystem.states.FightState;
 import de.steamwar.fightsystem.states.StateDependentListener;
+import de.steamwar.fightsystem.states.StateDependentTask;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
@@ -37,7 +38,9 @@ import org.bukkit.inventory.meta.ItemMeta;
 import org.bukkit.potion.PotionEffect;
 
 import java.util.Collection;
+import java.util.HashSet;
 import java.util.Objects;
+import java.util.Set;
 import java.util.function.Consumer;
 
 public class HotbarKit extends Kit {
@@ -81,8 +84,11 @@ public class HotbarKit extends Kit {
 
     public static class HotbarKitListener implements Listener {
 
+        private static final Set<Player> clicked = new HashSet<>();
+
         public HotbarKitListener() {
             new StateDependentListener(ArenaMode.AntiReplay, FightState.Setup, this);
+            new StateDependentTask(ArenaMode.AntiReplay, FightState.Setup, clicked::clear, 1, 1);
         }
 
         @EventHandler
@@ -93,11 +99,13 @@ public class HotbarKit extends Kit {
             Player player = event.getPlayer();
             int slot = player.getInventory().getHeldItemSlot();
             Kit activeKit = activeKits.get(player);
-            System.out.println(event.getAction().name());
             if(!(activeKit instanceof HotbarKit) || PersonalKitCreator.inKitCreator(player) || activeKit.getInventory()[slot] == null)
                 return;
 
             event.setCancelled(true);
+            if(!clicked.add(player))
+                return;
+
             ((HotbarKit)activeKit).onClicks[slot].accept(player);
         }
     }