org.bukkit.event.player.PlayerDropItemEvent#setCancelled ( )源码实例Demo

@EventHandler
public void onDrop(PlayerDropItemEvent event) {
    Player player = event.getPlayer();
    if (event.isCancelled() || !Main.isPlayerInGame(player)) {
        return;
    }

    GamePlayer gPlayer = Main.getPlayerGameProfile(player);
    Game game = gPlayer.getGame();
    if (gPlayer.isSpectator) {
        return;
    }

    WarpPowder warpPowder = (WarpPowder) game.getFirstActivedSpecialItemOfPlayer(player, WarpPowder.class);
    if (warpPowder != null) {
        if (warpPowder.getStack().equals(event.getItemDrop().getItemStack())) {
            event.setCancelled(true);
        }
    }
}
 

/**
 * Prevents enhanced item from dropping.
 *
 * @param e
 */
@EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
public void onItemDrop(PlayerDropItemEvent e) {
    Item droppedItem = e.getItemDrop();
    ItemStack DroppedItemStack = droppedItem.getItemStack();
    Player p = e.getPlayer();
    // Checks if the item is a bounded item
    if ((DroppedItemStack.hasItemMeta()) && (DroppedItemStack.getItemMeta()
            .getLore() != null)) {
        if (DroppedItemStack.getItemMeta().getLore().contains(Util.UNIQUEID + Util.toColor(
                SettingsManager.lang.getString("lore.untradeableLore")))) {
            e.setCancelled(true);
            Util.sendMessage(SettingsManager.lang.getString(
                    "messages.noDrop"), p);
        }
    }
}
 

@EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
public void onVisitorDrop(final PlayerDropItemEvent e) {
    if (DEBUG) {
        plugin.getLogger().info(e.getEventName());
    }
    if (!IslandGuard.inWorld(e.getPlayer())) {
        return;
    }
    Island island = plugin.getGrid().getIslandAt(e.getItemDrop().getLocation());
    if ((island != null && island.getIgsFlag(SettingsFlag.VISITOR_ITEM_DROP))
            || e.getPlayer().isOp() || VaultHelper.checkPerm(e.getPlayer(), Settings.PERMPREFIX + "mod.bypassprotect")
            || plugin.getGrid().locationIsOnIsland(e.getPlayer(), e.getItemDrop().getLocation())) {
        return;
    }
    Util.sendMessage(e.getPlayer(), ChatColor.RED + plugin.myLocale(e.getPlayer().getUniqueId()).islandProtected);
    e.setCancelled(true);
}
 

@EventHandler(ignoreCancelled = true)
public void onItemDrop(PlayerDropItemEvent event) {
    if (!cratesPlus.getConfigHandler().isDisableKeySwapping())
        return;
    String title;
    ItemStack item = event.getItemDrop().getItemStack();

    for (Map.Entry<String, Crate> crate : cratesPlus.getConfigHandler().getCrates().entrySet()) {
        if (!(crate.getValue() instanceof KeyCrate)) {
            continue;
        }
        KeyCrate keyCrate = (KeyCrate) crate.getValue();
        Key key = keyCrate.getKey();
        if (key == null)
            continue;
        title = key.getName();

        if (item.hasItemMeta() && item.getItemMeta().hasDisplayName() && item.getItemMeta().getDisplayName().contains(title)) {
            MessageHandler.sendMessage(event.getPlayer(), "&cYou can not drop crate keys", crate.getValue(), null);
            event.setCancelled(true);
            return;
        }
    }

}
 

@EventHandler
public void onDrop(PlayerDropItemEvent event) {
  Player p = event.getPlayer();
  Game g = BedwarsRel.getInstance().getGameManager().getGameOfPlayer(p);
  if (g == null) {
    return;
  }

  if (g.getState() == GameState.RUNNING
      && event.getItemDrop().getItemStack().getItemMeta().getDisplayName() != null
      && event.getItemDrop().getItemStack().getItemMeta().getDisplayName()
      .equals(BedwarsRel._l("ingame.specials.warp-powder.cancel"))) {
    event.setCancelled(true);
  }

}
 

@EventHandler
  public void onPlayerDropItem(final PlayerDropItemEvent event) {
  	final GameMap gameMap = MatchManager.get().getPlayerMap(event.getPlayer());
  	if (gameMap == null) {
  		return;
  	}
if (gameMap.getMatchState() == MatchState.WAITINGSTART || gameMap.getMatchState() == MatchState.ENDING) {
	event.setCancelled(true);
}
  }
 

@EventHandler
public void onItemDrop(PlayerDropItemEvent e) {
    if (backpacks.containsKey(e.getPlayer().getUniqueId())) {
        ItemStack item = e.getItemDrop().getItemStack();
        SlimefunItem sfItem = SlimefunItem.getByItem(item);

        if (sfItem instanceof SlimefunBackpack) {
            e.setCancelled(true);
        }
    }
}
 

@EventHandler(ignoreCancelled = true)
public void onItemDrop(PlayerDropItemEvent event) {
    ItemStack currentItem = event.getItemDrop().getItemStack();
    if (currentItem.getType() == Material.AIR) return;
    NBTItem nbtItem = new NBTItem(currentItem);
    if (!nbtItem.hasKey("HubBasics")) return;

    CustomItem item = HubBasics.getInstance().getItemManager().get(nbtItem.getString("HubBasics"));
    if (item == null) {
        currentItem.setType(Material.AIR); // Destroy old item
        return;
    }
    if (!item.getAllowDrop())
        event.setCancelled(true); // Call setCancelled only when needed to not conflict with other plugins
}
 

@EventHandler(priority = EventPriority.HIGH)
public void onPlayerDropItem(PlayerDropItemEvent event) {
    if (event.isCancelled() || !LWC.ENABLED) {
        return;
    }

    Player player = event.getPlayer();

    LWCDropItemEvent evt = new LWCDropItemEvent(player, event);
    plugin.getLWC().getModuleLoader().dispatchEvent(evt);

    if (evt.isCancelled()) {
        event.setCancelled(true);
    }
}
 

@EventHandler(ignoreCancelled = true)
public void onDrop(PlayerDropItemEvent event)
{
	Material itemType = event.getItemDrop().getItemStack().getType();
	if(itemType == Material.SHULKER_SHELL || SHULKER_BOX_MATERIALS.contains(itemType))
	{
		event.setCancelled(true);
	}
}
 

@EventHandler(priority = EventPriority.MONITOR) 
public void OnPlayerDropItemEvent(PlayerDropItemEvent event) {
	if (isPlayerInPlacementMode(event.getPlayer())) {
		event.setCancelled(true);
		removeFromPlacementMode(event.getPlayer(), true);
	}
}
 

@EventHandler(priority = EventPriority.HIGHEST)
public void onPlayerDropItem(PlayerDropItemEvent event) {
	Player player = event.getPlayer();
	ItemStack item = event.getItemDrop().getItemStack();
	GameManager gm = GameManager.getGameManager();

	if (gm.getGameState() == GameState.WAITING && GameItem.isGameItem(item)){
		event.setCancelled(true);
		return;
	}
}
 

@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
public void onDrop(PlayerDropItemEvent event)
{
	UUID uuid = event.getPlayer().getUniqueId();
	
	if((options.modeItemChange || !modeCoordinator.isInMode(uuid)) && !freezeHandler.isFrozen(uuid))
	{
		return;
	}
	
	event.setCancelled(true);
}
 

@EventHandler
public void onPlayerDropItem(PlayerDropItemEvent event) {
	if(plugin.getGuildManager().isVaultItemStack(event.getItemDrop().getItemStack())) {
		event.setCancelled(true);
		Message.CHAT_GUILD_VAULT_DROP.send(event.getPlayer());
	}
}
 

@EventHandler
public void onDropItem(PlayerDropItemEvent event) {
  if (cancelled) return;
  if (player1.equals(event.getPlayer()) || player2.equals(event.getPlayer())) {
    event.setCancelled(true);
    if (accept1 && accept2) {
      giveOnCursor(event.getPlayer());
    }
  }
}
 

@EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
@SuppressWarnings("unused")
public void onDropEvent(PlayerDropItemEvent event) {
    Player player = event.getPlayer();
    if (!plugin.getWorldManager().isSkyWorld(player.getWorld())) {
        return;
    }
    if (!visitorsCanDrop && !plugin.playerIsOnIsland(player) && !plugin.playerIsInSpawn(player)) {
        event.setCancelled(true);
        plugin.notifyPlayer(player, tr("\u00a7eVisitors can't drop items!"));
        return;
    }
    addDropInfo(player, event.getItemDrop().getItemStack());
}
 

@EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
public void onPlayerDropItem(final PlayerDropItemEvent event) {
  if (freeze.isFrozen(event.getPlayer())) {
    event.setCancelled(true);
  }
}
 

private void activate(Player p, PlayerDropItemEvent e, Item item) {
    // Being sure the entity is still valid and not picked up or whatsoever.
    if (!item.isValid()) {
        return;
    }

    Location l = item.getLocation();
    Collection<Entity> entites = l.getWorld().getNearbyEntities(l, RANGE, RANGE, RANGE, this::findCompatibleItem);
    Optional<Entity> optional = entites.stream().findFirst();

    if (optional.isPresent()) {
        Item entity = (Item) optional.get();
        ItemStack target = entity.getItemStack();

        SlimefunUtils.setSoulbound(target, true);

        if (target.getAmount() == 1) {
            e.setCancelled(true);

            // This lightning is just an effect, it deals no damage.
            l.getWorld().strikeLightningEffect(l);

            Slimefun.runSync(() -> {
                // Being sure entities are still valid and not picked up or whatsoever.
                if (item.isValid() && entity.isValid() && target.getAmount() == 1) {

                    l.getWorld().createExplosion(l, 0);
                    l.getWorld().playSound(l, Sound.ENTITY_GENERIC_EXPLODE, 0.3F, 1);

                    entity.remove();
                    item.remove();
                    l.getWorld().dropItemNaturally(l, target);

                    SlimefunPlugin.getLocalization().sendMessage(p, "messages.soulbound-rune.success", true);
                }
            }, 10L);
        }
        else {
            SlimefunPlugin.getLocalization().sendMessage(p, "messages.soulbound-rune.fail", true);
        }
    }
}
 

@EventHandler(priority = EventPriority.HIGH)
public void onPlayerDropItem(PlayerDropItemEvent event) {
    Player player = event.getPlayer();
    if (isCitizensNPC(player)) {
        return;
    }

    GlobalPlayer dPlayer = dPlayers.get(player);
    if (dPlayer == null) {
        return;
    }

    if (dPlayer instanceof EditPlayer && !config.getDropItems() && !DPermission.hasPermission(player, DPermission.INSECURE)) {
        event.setCancelled(true);
    }

    if (!(dPlayer instanceof DGamePlayer)) {
        return;
    }

    DGamePlayer gamePlayer = (DGamePlayer) dPlayer;

    DGroup dGroup = gamePlayer.getGroup();
    if (dGroup == null) {
        return;
    }

    if (!dGroup.isPlaying()) {
        event.setCancelled(true);
        return;
    }

    if (!gamePlayer.isReady()) {
        event.setCancelled(true);
        return;
    }

    for (ExItem item : dGroup.getDungeon().getRules().getState(GameRule.SECURE_OBJECTS)) {
        if (event.getItemDrop().getItemStack().isSimilar(item.toItemStack())) {
            event.setCancelled(true);
            MessageUtil.sendMessage(player, DMessage.ERROR_DROP.getMessage());
            return;
        }
    }
}
 

@EventHandler
public void onDrop(PlayerDropItemEvent event) {
    event.setCancelled(true);
}