Depending on NBT-API

src/main/kotlin/xyz/fortern/forternhelper/Helper.kt

@@ -7,6 +7,7 @@ import org.bukkit.plugin.java.JavaPlugin
 import xyz.fortern.forternhelper.command.HelperCommand
 import xyz.fortern.forternhelper.listener.ForternListener
 import xyz.fortern.forternhelper.placeholder.ForternExpansion
+import java.io.File
 
 class Helper : JavaPlugin() {
     private lateinit var adventure: BukkitAudiences
@@ -16,13 +17,19 @@ class Helper : JavaPlugin() {
     override fun onEnable() {
         // Plugin startup logic
         this.adventure = BukkitAudiences.create(this)
-        logger.info("Registering listeners...")
+
+        // init data-folders
+        logger.info("Initializing data-folders...")
+        File(this.dataFolder, "block-nbt").mkdirs()
+        File(this.dataFolder, "item-nbt").mkdirs()
+
         // register listeners
+        logger.info("Registering listeners...")
         Bukkit.getPluginManager().registerEvents(ForternListener(this), this)
-        logger.info("Registering commands...")
         // register commands
+        logger.info("Registering commands...")
         Bukkit.getPluginCommand("helper")?.setExecutor(HelperCommand(this, adventure))
-        // register placeholder
+        // register placeholders
         expansion = ForternExpansion(this)
         if (Bukkit.getPluginManager().isPluginEnabled("PlaceholderAPI")) {
             logger.info("Registering placeholders...")

src/main/kotlin/xyz/fortern/forternhelper/command/HelperCommand.kt

@@ -1,5 +1,7 @@
 package xyz.fortern.forternhelper.command
 
+import de.tr7zw.nbtapi.NBT
+import de.tr7zw.nbtapi.iface.ReadWriteNBT
 import net.kyori.adventure.platform.bukkit.BukkitAudiences
 import net.kyori.adventure.text.Component
 import net.kyori.adventure.text.format.NamedTextColor
@@ -9,6 +11,8 @@ import org.bukkit.command.CommandSender
 import org.bukkit.command.TabExecutor
 import org.bukkit.entity.Player
 import org.bukkit.plugin.java.JavaPlugin
+import java.io.File
+import java.io.FileReader
 
 class HelperCommand(
     private val plugin: JavaPlugin,
@@ -54,8 +58,24 @@ class HelperCommand(
             }
         }
         return when (args[0]) {
-            "help" -> onHelp(sender, exe)
-            "loadlevel" -> onLoadLevel(sender, args, exe)
+            "help" -> {
+                onHelp(sender, exe)
+            }
+
+            "loadlevel" -> {
+                onLoadLevel(sender, args, exe)
+            }
+
+            "setblock" -> {
+                setBlockFromNbt(sender, args, exe)
+                null
+            }
+
+            "getitem" -> {
+                getItemFromNbt(sender, args, exe)
+                null
+            }
+
             else -> {
                 if (exe) {
                     adventure.sender(sender).sendMessage(Component.text("错误的子命令"))
@@ -68,6 +88,54 @@ class HelperCommand(
         }
     }
 
+    private fun getItemFromNbt(sender: CommandSender, args: List<String>, exe: Boolean) {
+        // args[0]:getitem | args[1]:0 | args[2]:txt
+        if (!exe) return
+        if (sender !is Player) return
+        if (!sender.isOp) return
+        if (args.size < 2) return
+        val i = args[1]
+        val isNbt = if (args.size > 2) args[2] == "nbt" else false
+        val itemNbtDir = File(plugin.dataFolder, "item-nbt")
+        val nbt = if (isNbt) {
+            val file = File(itemNbtDir, "${i}.nbt")
+            if (!file.exists()) return
+            NBT.readFile(file)
+        } else {
+            val file = File(itemNbtDir, "${i}.txt")
+            if (!file.exists()) return
+            NBT.parseNBT(FileReader(file).readAllAsString())
+        }
+        sender.inventory.addItem(NBT.itemStackFromNBT(nbt))
+        return
+    }
+
+    private fun setBlockFromNbt(sender: CommandSender, args: List<String>, exe: Boolean) {
+        // args[0]:setblock | args[1]:0 | args[2]:txt
+        if (!exe) return
+        if (sender !is Player) return
+        if (!sender.isOp) return
+        if (args.size < 2) return
+        val i = args[1]
+        val isNbt = if (args.size > 2) args[2] == "nbt" else false
+        val world = sender.world
+        val blockState = world.getBlockState(0, 128, 0)
+        val itemNbtDir = File(plugin.dataFolder, "block-nbt")
+        val readWriteNBT = if (isNbt) {
+            val file = File(itemNbtDir, "${i}.nbt")
+            if (!file.exists()) return
+            NBT.readFile(file)
+        } else {
+            val file = File(itemNbtDir, "${i}.txt")
+            if (!file.exists()) return
+            NBT.parseNBT(FileReader(file).readAllAsString())
+        }
+        NBT.modify(blockState) { nbt: ReadWriteNBT ->
+            nbt.mergeCompound(readWriteNBT)
+        }
+        return
+    }
+
     private fun onHelp(sender: CommandSender, exe: Boolean): List<String>? {
         if (exe) sendHelp(sender)
         return null

src/main/resources/plugin.yml

@@ -3,7 +3,10 @@ version: '${version}'
 authors: [ Fortern ]
 api-version: '26.1'
 main: xyz.fortern.forternhelper.Helper
-softdepend: ["PlaceholderAPI"]
+softdepend:
+  - PlaceholderAPI
+depend:
+  - NBTAPI
 
 libraries:
   - org.jetbrains.kotlin:kotlin-stdlib:2.3.21