Bukkit 1.20.1 GUI: 超过64个物品数量的实现 - Java 代码示例

{"title":"Bukkit 1.20.1 GUI: 超过64个物品数量的实现 - Java 代码示例","description":"使用NBT标签在Bukkit 1.20.1 GUI中实现超过64个物品数量，通过Java代码示例展示如何创建一个自定义物品类和GUI界面，并通过NBT标签存储和获取物品数量。","keywords":"Bukkit, 1.20.1, GUI, 物品数量, NBT标签, Java, 代码示例, 超过64, 限制突破","content":"要实现在Gui内物品数量可以突破64上限变为100，你可以使用NBT标签来存储物品的数量。下面是一个Java代码示例，演示了如何创建一个Gui界面，并使用自定义的物品类来实现数量超过64的物品。\n\n首先，创建一个名为"CustomItem"的物品类，该类包含物品的名称和数量：\n\njava\npublic class CustomItem {\n private String name;\n private int quantity;\n\n public CustomItem(String name, int quantity) {\n this.name = name;\n this.quantity = quantity;\n }\n\n public String getName() {\n return name;\n }\n\n public int getQuantity() {\n return quantity;\n }\n\n public void setQuantity(int quantity) {\n this.quantity = quantity;\n }\n}\n\n\n接下来，创建一个名为"CustomGui"的Gui类，该类用于显示物品的数量和允许玩家修改数量：\n\njava\nimport org.bukkit.Bukkit;\nimport org.bukkit.Material;\nimport org.bukkit.entity.Player;\nimport org.bukkit.event.EventHandler;\nimport org.bukkit.event.Listener;\nimport org.bukkit.event.inventory.InventoryClickEvent;\nimport org.bukkit.inventory.Inventory;\nimport org.bukkit.inventory.ItemStack;\nimport org.bukkit.inventory.meta.ItemMeta;\nimport org.bukkit.plugin.java.JavaPlugin;\n\npublic class CustomGui implements Listener {\n private JavaPlugin plugin;\n private Inventory gui;\n\n public CustomGui(JavaPlugin plugin) {\n this.plugin = plugin;\n this.gui = Bukkit.createInventory(null, 9, \"Custom Gui\");\n\n // 创建一个自定义物品\n CustomItem customItem = new CustomItem(\"Custom Item\", 100);\n ItemStack itemStack = new ItemStack(Material.DIAMOND);\n ItemMeta meta = itemStack.getItemMeta();\n meta.setDisplayName(customItem.getName());\n itemStack.setItemMeta(meta);\n itemStack = setItemQuantity(itemStack, customItem.getQuantity());\n gui.setItem(0, itemStack);\n }\n\n @EventHandler\n public void onInventoryClick(InventoryClickEvent event) {\n if (event.getClickedInventory() != null && event.getClickedInventory().equals(gui)) {\n event.setCancelled(true);\n\n // 获取玩家点击的物品栏槽位\n int slot = event.getSlot();\n if (slot == 0) {\n Player player = (Player) event.getWhoClicked();\n ItemStack itemStack = event.getCurrentItem();\n\n // 获取物品的数量\n int quantity = getItemQuantity(itemStack);\n quantity += 1; // 增加数量\n setItemQuantity(itemStack, quantity);\n\n // 更新Gui界面\n gui.setItem(0, itemStack);\n player.updateInventory();\n }\n }\n }\n\n private ItemStack setItemQuantity(ItemStack itemStack, int quantity) {\n // 使用NBT标签存储物品的数量\n itemStack = itemStack.clone(); // 复制一个新的物品栈\n itemStack.setAmount(1); // 设置物品数量为1，因为NBT标签只能应用于数量为1的物品\n\n // 创建NBT标签\n net.minecraft.nbt.NBTTagCompound compound = new net.minecraft.nbt.NBTTagCompound();\n compound.setInt(\"quantity\", quantity);\n\n // 应用NBT标签到物品栈\n net.minecraft.server.v1_20_R1.ItemStack nmsItemStack = org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack.asNMSCopy(itemStack);\n nmsItemStack.setTag(compound);\n itemStack = org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack.asBukkitCopy(nmsItemStack);\n\n return itemStack;\n }\n\n private int getItemQuantity(ItemStack itemStack) {\n // 从物品栈的NBT标签中获取数量\n net.minecraft.server.v1_20_R1.ItemStack nmsItemStack = org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack.asNMSCopy(itemStack);\n net.minecraft.nbt.NBTTagCompound compound = nmsItemStack.getTag();\n if (compound != null && compound.hasKeyOfType(\"quantity\", net.minecraft.nbt.NBTType.INT)) {\n return compound.getInt(\"quantity\");\n }\n\n return 0;\n }\n\n public void open(Player player) {\n player.openInventory(gui);\n }\n}\n\n\n最后，在你的主类（继承自JavaPlugin）中注册Gui监听器，并在玩家执行命令时打开Gui界面：\n\njava\nimport org.bukkit.command.Command;\nimport org.bukkit.command.CommandSender;\nimport org.bukkit.entity.Player;\nimport org.bukkit.plugin.java.JavaPlugin;\n\npublic class YourPlugin extends JavaPlugin {\n private CustomGui customGui;\n\n @Override\n public void onEnable() {\n customGui = new CustomGui(this);\n getServer().getPluginManager().registerEvents(customGui, this);\n }\n\n @Override\n public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {\n if (!(sender instanceof Player)) return false;\n\n Player player = (Player) sender;\n customGui.open(player);\n\n return true;\n }\n}\n\n\n这样，当玩家执行你指定的命令时，就会打开一个Gui界面，其中包含一个数量为100的物品。玩家可以点击该物品来增加数量。\n\n