java Bukkit检查玩家的库存

Question

我试图查看玩家的库存中是否有以下物品，如果他们有，我想移除这些物品，并向他们发送一条消息，说明物品已被移除，但我不知道如何操作，这是我目前为止的情况：

    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.");
    }
}

我在屏幕上看到一个错误。包含（bannditems，1））行

谢谢你的帮助

Answer 1

对于数组中的每个元素，必须进行检查，而不仅仅是比较数组。以下是概念证明：

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!"
    }
}

这将逐个循环check数组，并将每个元素与4.2进行比较。当他们平等时，它会报告他们。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，该事件将循环遍历bannedItems的每个元素，并检查用户是否在那里拥有它

for(Material m : bannedItems) 

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

我也会使用不同的事件，例如当他们拿起一个项目，然后检查，所以你可以立即删除它