村民无限补货

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

@@ -8,8 +8,7 @@ class Helper : JavaPlugin() {
 
     override fun onEnable() {
         // Plugin startup logic
-        logger.info("Registering events...")
-        logger.info("监听末影人生成...")
+        logger.info("Registering listeners...")
         Bukkit.getPluginManager().registerEvents(ForternListener(this), this)
     }
 

src/main/kotlin/xyz/fortern/forternhelper/listener/ForternListener.kt

@@ -1,31 +1,20 @@
 package xyz.fortern.forternhelper.listener
 
-import org.bukkit.entity.Enderman
-import org.bukkit.entity.Player
 import org.bukkit.entity.Villager
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
-import org.bukkit.event.entity.CreatureSpawnEvent
-import org.bukkit.event.entity.VillagerReplenishTradeEvent
-import org.bukkit.event.inventory.TradeSelectEvent
-import org.bukkit.event.player.PlayerInteractAtEntityEvent
+import org.bukkit.event.player.PlayerInteractEntityEvent
 import xyz.fortern.forternhelper.Helper
+import xyz.fortern.forternhelper.reflection.NMSAdapter
 
 class ForternListener(val helper: Helper) : Listener {
     @EventHandler
-    fun onCreatureSpawn(event: CreatureSpawnEvent) {
-        val entity = event.entity
-        if (entity !is Enderman) {
+    fun onTrade(event: PlayerInteractEntityEvent) {
+        val entity = event.rightClicked
+        if (entity !is Villager) {
             return
         }
-        val location = event.location
-        val x = location.x
-        val y = location.y
-        val z = location.z
-        // x: -900
-        if (x > -1028 && x < -770 && y > 0 && y < 186 && z > -777 && z < -521) {
-            helper.logger.info("Enderman spawned at ${entity.location}")
-        }
+        NMSAdapter.NMS.setVillagerRestock(entity, 0)
     }
 
 }

src/main/kotlin/xyz/fortern/forternhelper/nms/v26_R1/NMSHandlerImpl.kt

@@ -0,0 +1,36 @@
+package xyz.fortern.forternhelper.nms.v26_R1
+
+import org.bukkit.entity.Villager
+import xyz.fortern.forternhelper.reflection.NMSAdapter.PKG_NAME
+import xyz.fortern.forternhelper.reflection.NMSHandler
+import java.lang.reflect.Field
+import java.lang.reflect.Method
+
+// 26.1.x
+class NMSHandlerImpl : NMSHandler {
+
+    override fun setVillagerRestock(villager: Villager, restockToday: Int) {
+        val mcVillager = villagerGetHandlerMethod.invoke(villager)
+        villagerRestockTodayField.isAccessible = true
+        villagerRestockTodayField.set(mcVillager, restockToday)
+    }
+
+    companion object {
+        private val craftVillagerClass: Class<*>
+        private val villagerGetHandlerMethod: Method
+        private val mcVillagerClass: Class<*>
+        private val villagerRestockTodayField: Field
+
+
+        init {
+            try {
+                craftVillagerClass = Class.forName("$PKG_NAME.entity.CraftVillager")
+                villagerGetHandlerMethod = craftVillagerClass.getMethod("getHandle")
+                mcVillagerClass = Class.forName("net.minecraft.world.entity.npc.villager.Villager")
+                villagerRestockTodayField = mcVillagerClass.getField("numberOfRestocksToday")
+            } catch (e: ReflectiveOperationException) {
+                throw RuntimeException(e)
+            }
+        }
+    }
+}

src/main/kotlin/xyz/fortern/forternhelper/reflection/NMSAdapter.kt

@@ -0,0 +1,44 @@
+package xyz.fortern.forternhelper.reflection
+
+import org.bukkit.Bukkit
+
+object NMSAdapter {
+    val NMS: NMSHandler
+
+    val REFLECT_VERSION: String
+
+    val PKG_NAME: String
+
+    init {
+        try {
+            // "org.bukkit.craftbukkit" or "org.bukkit.craftbukkit.vX_RY"
+            PKG_NAME = Bukkit.getServer().javaClass.getPackage().name
+            if (PKG_NAME.contains("R")) {
+                // e.g. org.bukkit.craftbukkit.v1_21_R5
+                REFLECT_VERSION = PKG_NAME.substring(PKG_NAME.lastIndexOf('.') + 1)
+            } else {
+                // Paper 自 1.20.5 开始不再重定位 CraftBukkit 包。
+                // Spigot 自 26.1 开始不再重定位 CraftBukkit 包。
+                val bukkitVersion = Bukkit.getBukkitVersion()
+                val mcVersion = bukkitVersion.split("-".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()[0]
+                REFLECT_VERSION = when (mcVersion) {
+                    "1.20.5", "1.20.6" -> "v1_20_R4"
+                    "1.21", "1.21.1" -> "v1_21_R1"
+                    "1.21.2", "1.21.3" -> "v1_21_R2"
+                    "1.21.4" -> "v1_21_R3"
+                    "1.21.5" -> "v1_21_R4"
+                    "1.21.6", "1.21.7", "1.21.8" -> "v1_21_R5"
+                    "1.21.9", "1.21.10" -> "v1_21_R6"
+                    "1.21.11" -> "v1_21_R7"
+                    "26.1", "26.1.1", "26.1.2" -> "v26_R1"
+                    else -> throw Exception("Unknown NMS version")
+                }
+            }
+            NMS = Class.forName("xyz.fortern.forternhelper.nms.$REFLECT_VERSION.NMSHandlerImpl").getConstructor()
+                .newInstance() as NMSHandler
+        } catch (e: Exception) {
+            throw RuntimeException("init NMSAdapter fail. NMS", e)
+        }
+    }
+
+}

src/main/kotlin/xyz/fortern/forternhelper/reflection/NMSHandler.kt

@@ -0,0 +1,7 @@
+package xyz.fortern.forternhelper.reflection
+
+import org.bukkit.entity.Villager
+
+interface NMSHandler {
+    fun setVillagerRestock(villager: Villager, restockToday: Int)
+}