InventoryListener.java 文件源码

@EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
public void onInventoryDragEvent(InventoryDragEvent event) {
    Inventory inventory = event.getInventory();

    if (!(inventory instanceof BrewerInventory)) {
        return;
    }

    InventoryHolder holder = inventory.getHolder();

    if (!(holder instanceof BrewingStand)) {
        return;
    }

    HumanEntity whoClicked = event.getWhoClicked();

    if (!UserManager.hasPlayerDataKey(event.getWhoClicked()) || !Permissions.secondaryAbilityEnabled(whoClicked, SecondaryAbility.CONCOCTIONS)) {
        return;
    }

    if (!event.getInventorySlots().contains(Alchemy.INGREDIENT_SLOT)) {
        return;
    }

    ItemStack cursor = event.getCursor();
    ItemStack ingredient = ((BrewerInventory) inventory).getIngredient();

    if (AlchemyPotionBrewer.isEmpty(ingredient) || ingredient.isSimilar(cursor)) {
        Player player = (Player) whoClicked;

        if (AlchemyPotionBrewer.isValidIngredient(player, cursor)) {
            // Not handled: dragging custom ingredients over ingredient slot (does not trigger any event)
            AlchemyPotionBrewer.scheduleCheck(player, (BrewingStand) holder);
            return;
        }

        event.setCancelled(true);
        AlchemyPotionBrewer.scheduleUpdate(inventory);
    }
}