PlayerListener.java 文件源码

@EventHandler(priority = EventPriority.LOW) 
public void onConsume(PlayerItemConsumeEvent event) {
    if (ItemManager.getId(event.getItem()) == CivData.GOLDEN_APPLE) {
        CivMessage.sendError(event.getPlayer(), "You cannot use golden apples.");
        event.setCancelled(true);
        return;
    }

    if (event.getItem().getType().equals(Material.POTION)) {
        ConfigTechPotion pot = CivSettings.techPotions.get(Integer.valueOf(event.getItem().getDurability()));
        if (pot != null) {
            if (!pot.hasTechnology(event.getPlayer())) {
                CivMessage.sendError(event.getPlayer(), "You cannot use "+pot.name+" potions. You do not have the technology yet.");
                event.setCancelled(true);
                return;
            }
            if (pot.hasTechnology(event.getPlayer())) {
                event.setCancelled(false);
            }
        } else {
            CivMessage.sendError(event.getPlayer(), "You cannot use this type of potion.");
            event.setCancelled(true);
        }
    }
}