java - Bukkit 检查玩家的库存

Question

我正在尝试查看玩家的库存中是否有以下任何元素，如果有，我想删除这些元素并向他们发送一条消息，说明该元素已被删除，但我不知道如何为此，这就是我到目前为止所拥有的:

    Material[] bannedItems = { Material.DIAMOND_HELMET, Material.DIAMOND_CHESTPLATE, Material.DIAMOND_LEGGINGS, Material.DIAMOND_BOOTS, Material.GOLD_HELMET, Material.GOLD_CHESTPLATE, Material.GOLD_LEGGINGS, Material.GOLD_BOOTS };

@EventHandler
public void onInventoryClick(InventoryClickEvent event) {
    Player player = (Player) event.getWhoClicked();
    if(player.getInventory().contains(bannedItems, 1)){
        player.sendMessage(ChatColor.GRAY + "[" + ChatColor.RED + ChatColor.BOLD + "RPG" + ChatColor.GRAY + "] " + ChatColor.RED + "A has been removed from your possession.");
    }
}

我在 .contains(bannedItems, 1)) 行上收到错误。

感谢您的帮助!

Answer 1

对于数组中的每个元素，都必须检查它，而不仅仅是比较数组。这是概念证明:

double[] check = {1.3, 4.2, 4.3}; //A sample double array

for(double d : check) { //Loop thru all elements
    if(4.2 == d) { //If current element is equal to 4.2
        System.out.println("EQUAL!"); //Print "EQUAL!"
    }
}

这会逐一循环检查 check 数组，并将每个元素与 4.2 进行比较。当他们平等时，他们就会报告。然后您可以将其应用于这种情况:

@EventHandler
public void onInventoryClick(InventoryClickEvent event) {
    Material[] bannedItems = { Material.DIAMOND_HELMET, Material.DIAMOND_CHESTPLATE, Material.DIAMOND_LEGGINGS, Material.DIAMOND_BOOTS, Material.GOLD_HELMET, Material.GOLD_CHESTPLATE, Material.GOLD_LEGGINGS, Material.GOLD_BOOTS };
    Player player = (Player) event.getWhoClicked();

    for(Material m : bannedItems) { //Loop thru all elements
        if(player.getInventory().contains(m, 1)){ //Check if in inventory
            player.sendMessage(ChatColor.GRAY + "[" + ChatColor.RED + ChatColor.BOLD + "RPG" + ChatColor.GRAY + "] " + ChatColor.RED + "A has been removed from your possession.");
            //Remove stuff
        }
    }
}

现在，该事件将循环访问 bannedItems 的每个元素，并检查用户的库存中是否有该元素。

for(Material m : bannedItems) 

是一个增强的 for 循环，它将当前元素存储在 m 变量中的 bannedItems 中，然后我们使用单个 Material m 进行比较.

我还会使用不同的事件，例如当他们拿起一个元素时，然后进行检查，以便您可以立即将其删除。