ItemContainerUtil.java

package com.hypixel.hytale.server.core.inventory.container;

import com.hypixel.hytale.protocol.ItemArmorSlot;
import com.hypixel.hytale.server.core.inventory.container.filter.ArmorSlotAddFilter;
import com.hypixel.hytale.server.core.inventory.container.filter.FilterActionType;
import com.hypixel.hytale.server.core.inventory.container.filter.NoDuplicateFilter;
import com.hypixel.hytale.server.core.inventory.container.filter.SlotFilter;

public class ItemContainerUtil {
   public ItemContainerUtil() {
   }

   public static <T extends ItemContainer> T trySetArmorFilters(T container) {
      if (container instanceof SimpleItemContainer itemContainer) {
         ItemArmorSlot[] itemArmorSlots = ItemArmorSlot.VALUES;

         for(short i = 0; i < itemContainer.getCapacity(); ++i) {
            if (i < itemArmorSlots.length) {
               if (i < 5) {
                  itemContainer.setSlotFilter(FilterActionType.ADD, i, new ArmorSlotAddFilter(itemArmorSlots[i]));
               } else {
                  itemContainer.setSlotFilter(FilterActionType.ADD, i, new NoDuplicateFilter(itemContainer));
               }
            } else {
               itemContainer.setSlotFilter(FilterActionType.ADD, i, SlotFilter.DENY);
            }
         }
      }

      return container;
   }

   public static <T extends ItemContainer> T trySetSlotFilters(T container, SlotFilter filter) {
      if (container instanceof SimpleItemContainer itemContainer) {
         for(short i = 0; i < itemContainer.getCapacity(); ++i) {
            itemContainer.setSlotFilter(FilterActionType.ADD, i, filter);
         }
      }

      return container;
   }
}