Java Code Examples for org.bukkit.inventory.ItemStack#containsEnchantment()

public void validateEnchantment(ItemStack item, LibraryEnchantment ench) throws CivException {
	if (ench.enchant != null) {
		
		if(!ench.enchant.canEnchantItem(item)) {
			throw new CivException("You cannot enchant this item with this enchantment.");
		}
		
		if (item.containsEnchantment(ench.enchant) && item.getEnchantmentLevel(ench.enchant) > ench.level) {
			throw new CivException("You already have this enchantment at this level, or better.");
		}
		
		
	} else {
		if (!ench.enhancement.canEnchantItem(item)) {
			throw new CivException("You cannot enchant this item with this enchantment.");
		}
		
		if (ench.enhancement.hasEnchantment(item)) {
			throw new CivException("You already have this enchantment.");
		}
	}
}
 

@EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
public void onEntityKilled(EntityDeathEvent e) {
    if (e.getEntity().getType() != EntityType.SHEEP || !plugin.getConfig().getBoolean("options.sheep.dropMutton", true) || !e.getEntity().getWorld().isGameRule("doMobLoot") || !(e.getEntity() instanceof Ageable)) {
        return;
    }
    Ageable entity = (Ageable) e.getEntity();
    if (!entity.isAdult()) {
        return;
    }
    boolean fireaspect = false;
    int looting = 1;
    if (entity.getLastDamageCause() instanceof EntityDamageByEntityEvent) {
        EntityDamageByEntityEvent dEvent = (EntityDamageByEntityEvent) entity.getLastDamageCause();
        if (dEvent.getDamager() != null && dEvent.getDamager() instanceof Player) {
            ItemStack hand = ((Player) dEvent.getDamager()).getItemInHand();
            fireaspect = hand.containsEnchantment(Enchantment.FIRE_ASPECT);
            if (hand.containsEnchantment(Enchantment.LOOT_BONUS_MOBS))
                looting += hand.getEnchantmentLevel(Enchantment.LOOT_BONUS_MOBS);
            if (looting < 1) //Incase a plugin sets an enchantment level to be negative
                looting = 1;
        } else if (dEvent.getDamager() != null && dEvent.getDamager() instanceof Arrow) {
            Arrow a = (Arrow) dEvent.getDamager();
            if (a.getFireTicks() > 0)
                fireaspect = true;
        }
    }
    if (entity.getLastDamageCause().getCause() == DamageCause.FIRE_TICK || entity.getLastDamageCause().getCause() == DamageCause.FIRE
            || entity.getLastDamageCause().getCause() == DamageCause.LAVA || fireaspect)
        e.getDrops().add(new ItemStack(Carbon.injector().cookedMuttonItemMat, random.nextInt(2) + 1 + random.nextInt(looting)));
    else
        e.getDrops().add(new ItemStack(Carbon.injector().muttonItemMat, random.nextInt(2) + 1 + random.nextInt(looting)));
}
 

@EventHandler
public void onEntityDamageByEntity(EntityDamageByEntityEvent event) {
    if (event.getDamager() instanceof Player) {
        ItemStack item = ((Player) event.getDamager()).getItemInHand();
        if (item != null) {
            if (item.containsEnchantment(Enchantment.DAMAGE_ALL) && item.getEnchantmentLevel(Enchantment.DAMAGE_ALL) > 1) {
                event.setDamage(1000);
            }
        }
    } else if (event.getDamager() instanceof Arrow) {
        if (event.getDamager().hasMetadata("rage")) {
            event.setDamage(1000);
        }
    }
}
 

@EventHandler(priority = EventPriority.MONITOR)
public void onPlayerCustomItemDamage(PlayerCustomItemDamageEvent event) {
	if (event.isCancelled())
		return;
	Player player = event.getPlayer();
	/*
	 * Somehow, someone got an NPE here. No idea how, but let's just prevent it from
	 * happening in the future. They were using PaperSpigot so it's probably
	 * something to do with that. Or I messed something up elsewhere xD
	 * 
	 * EDIT: I messed up - it's treefeller that dropped the axe's durability to
	 * below 0, it got removed and thus got nulled. Same for sickles.
	 */
	if (event.getCustomItem() == null)
		return;

	CustomItem cItem = event.getCustomItem();
	ItemStack item = event.getItem();
	CustomItemStack cStack = new CustomItemStack(item);
	int durability = 0;
	if (cItem.hasFakeDurability())
		durability = cStack.getFakeDurability();
	else
		durability = item.getType().getMaxDurability() - item.getDurability();
	// TODO: Check if you can modify the durability for items that are not
	// unbreakable and with Fake Durability.
	if (!item.containsEnchantment(Enchantment.DURABILITY)) {
		durability -= event.getDamage();
	} else {
		for (int i = 1; i <= event.getDamage(); i++) {
			if (NumberUtils.calculateChance(1 / ((double) item.getEnchantmentLevel(Enchantment.DURABILITY) + 1D))) {
				durability -= 1;
			}
		}
	}
	if (cItem.hasFakeDurability()) {
		cStack.setFakeDurability(durability);
	} else if (!cItem.isUnbreakable()) {
		item.setDurability((short) (item.getType().getMaxDurability() - durability));
	}
	if (durability < 0) {
		PlayerCustomItemBreakEvent breakEvent = new PlayerCustomItemBreakEvent(player, item, cItem);
		Bukkit.getPluginManager().callEvent(breakEvent);
		if (!event.isCancelled()) {
			player.getInventory().remove(item);
			player.playSound(player.getLocation(), Sound.ENTITY_ITEM_BREAK, 1F, 1F);
		}
		return;
	}
}
 

@EventHandler(priority = EventPriority.HIGHEST)
public void onItemRename(PrepareAnvilEvent event) {
	if (event.getResult() == null)
		return;
	ItemStack resultItem = event.getResult();
	if (!AdditionsAPI.isCustomItem(resultItem))
		return;
	AnvilInventory inv = event.getInventory();
	ItemMeta resultMeta = resultItem.getItemMeta();
	CustomItemStack cStack = new CustomItemStack(resultItem);
	CustomItem cItem = cStack.getCustomItem();

	ItemStack leftItem = inv.getItem(0);
	ItemMeta leftMeta = leftItem.getItemMeta();
	/*
	 * A fix for the bug that occurred due to the Display Name of the Custom
	 * Item having a ChatColor.RESET in front.
	 */
	if (cItem.getDisplayName() != null && resultMeta.getDisplayName() != null) {
		String renamedDisplayName = resultMeta.getDisplayName();
		if (cItem.getDisplayName() != renamedDisplayName
				&& leftMeta.getDisplayName().startsWith(ChatColor.RESET + "")) {
			if (renamedDisplayName.startsWith("r"))
				renamedDisplayName = renamedDisplayName.replaceFirst("r", "");
			resultMeta.setDisplayName(renamedDisplayName);

		}
	}
	/*
	 * A fix for being able to put books of any enchantment, even if it's
	 * forbidden
	 */
	if (!cItem.getForbidenEnchantments().isEmpty())
		for (Enchantment ench : cItem.getForbidenEnchantments())
			if (resultItem.containsEnchantment(ench))
				event.setResult(new ItemStack(Material.AIR));

	if (cItem.getDisplayName() != null) {
		String customName = cItem.getDisplayName();
		/*
		 * Fixes a bug that allowed you to rename the resultItem to it
		 * original material name
		 */
		if (resultMeta.getDisplayName() == null) {
			resultMeta.setDisplayName(customName);

		} else {
			/*
			 * TODO: A fix for the italic text even if you didn't change the
			 * name
			 */
		}
	}
	resultItem.setItemMeta(resultMeta);
	/*
	 * A fix for the fake lore not updating when adding Sharpness.
	 */
	cStack.updateLore();
}
 

private static boolean isUnwantedVanillaItem(ItemStack stack) {
	if (stack == null) {
		return false;
	}
	
	LoreCraftableMaterial craftMat = LoreCraftableMaterial.getCraftMaterial(stack);
	if (craftMat != null) {
		/* Assume that if it's custom. It's good to go. */			
		return false;
	}
	
	if(LoreGuiItem.isGUIItem(stack)) {
		return false;
	}
	
	ConfigRemovedRecipes removed = CivSettings.removedRecipies.get(ItemManager.getId(stack));
	if (removed == null && !stack.getType().equals(Material.ENCHANTED_BOOK)) {
		/* Check for badly enchanted tools */
		if (stack.containsEnchantment(Enchantment.DAMAGE_ALL) ||
			stack.containsEnchantment(Enchantment.DAMAGE_ARTHROPODS) ||
			stack.containsEnchantment(Enchantment.KNOCKBACK) ||
			stack.containsEnchantment(Enchantment.DAMAGE_UNDEAD) ||
			stack.containsEnchantment(Enchantment.DURABILITY)) {					
		} else if (stack.containsEnchantment(Enchantment.FIRE_ASPECT) && 
				   stack.getEnchantmentLevel(Enchantment.FIRE_ASPECT) > 2) {
			// Remove any fire aspect above this amount
		} else if (stack.containsEnchantment(Enchantment.LOOT_BONUS_MOBS) &&
				   stack.getEnchantmentLevel(Enchantment.LOOT_BONUS_MOBS) > 1) {
			// Only allow looting 1
		} else if (stack.containsEnchantment(Enchantment.LOOT_BONUS_BLOCKS) &&
			   stack.getEnchantmentLevel(Enchantment.LOOT_BONUS_BLOCKS) > 1) {
			// Only allow fortune 1
		} else if (stack.containsEnchantment(Enchantment.DIG_SPEED) &&
				   stack.getEnchantmentLevel(Enchantment.DIG_SPEED) > 5) {
			// only allow effiencey 5
		} else {
			/* Not in removed list, so allow it. */
			return false;				
		}
	}
	return true;
}