问题

我需要查找玩家的背包中是否有特定物品。我试图在文档中找到它，但对我来说它很糟糕，以至于我找不到它。
到目前为止，有这样一个代码，它可以工作，但只有当玩家放置或破坏带有我需要的物品的方块时才能工作，而我需要它在不断跟踪。例如，我写了一个命令，结果发现是否有这样一个物体或者没有。

@EventHandler
public  void yes(PlayerInteractEvent e){
    Player player = e.getPlayer();
    ItemStack item = e.getItem();
    if(item.getType() == Material.DIAMOND_ORE){
        player.sendMessage("Yes");
    }else{
        player.sendMessage("No");
    }
}

@EventHandler
public  void yes(PlayerInteractEvent e){
    Player player = e.getPlayer();
    ItemStack item = e.getItem();
    if(item.getType() == Material.DIAMOND_ORE){
        player.sendMessage("Yes");
    }else{
        player.sendMessage("No");
    }
}

答案1

得分: 2

<h3> Minecraft Java库存任务 </h3>

我有一个解决方案。第一个代码片段用于检查库存中是否有物品但不考虑数量。

**代码:**

```java
@EventHandler
public void checkInventory(InventoryClickEvent e) {
    if (e.getWhoClicked() instanceof Player) {
        Player player = (Player) e.getWhoClicked();
        ItemStack item = new ItemStack(Material.DIAMOND_ORE);

        if (player.getInventory().contains(item)) {
            player.sendMessage("是");
        } else {
            player.sendMessage("否");
        }
    }
}

在这里，您还可以使用数量来检查的方法。

代码:

@EventHandler
public void checkInventory(InventoryClickEvent e) {
    if (e.getWhoClicked() instanceof Player) {
        Player player = (Player) e.getWhoClicked();
        ItemStack item = new ItemStack(Material.DIAMOND_ORE);
        int desiredQuantity = 2;
        int itemCount = 0;

        for (ItemStack stack : player.getInventory().getContents()) {
            if (stack != null && stack.isSimilar(item)) {
                itemCount += stack.getAmount();
            }
        }

        if (itemCount >= desiredQuantity) {
            player.sendMessage("是");
        } else {
            player.sendMessage("否");
        }
    }
}

<details>
<summary>英文:</summary>

&lt;h3&gt; Minecraft Java Inventory Task &lt;/h3&gt;

There I have a solution. The first code snippet is for checking if an item is in inventory without quantity.

**The Code:**

    @EventHandler
    public void checkInventory(InventoryClickEvent e) {
        if (e.getWhoClicked() instanceof Player) {
            Player player = (Player) e.getWhoClicked();
            ItemStack item = new ItemStack(Material.DIAMOND_ORE);
    
            if (player.getInventory().contains(item)) {
                player.sendMessage(&quot;Yes&quot;);
            } else {
                player.sendMessage(&quot;No&quot;);
            }
        }
    }


Here you also have a method where you can check with quantity.

**The Code:**
```java
@EventHandler
public void checkInventory(InventoryClickEvent e) {
    if (e.getWhoClicked() instanceof Player) {
        Player player = (Player) e.getWhoClicked();
        ItemStack item = new ItemStack(Material.DIAMOND_ORE);
        int desiredQuantity = 2;
        int itemCount = 0;

        for (ItemStack stack : player.getInventory().getContents()) {
            if (stack != null &amp;&amp; stack.isSimilar(item)) {
                itemCount += stack.getAmount();
            }
        }

        if (itemCount &gt;= desiredQuantity) {
            player.sendMessage(&quot;Yes&quot;);
        } else {
            player.sendMessage(&quot;No&quot;);
        }
    }
}