Added player key tracking option

eco-core/core-plugin/src/main/kotlin/com/willfp/ecocrates/commands/CommandGive.kt

@@ -8,6 +8,7 @@ import com.willfp.ecocrates.crate.Crates
 import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataType
 import org.bukkit.util.StringUtil
 
 class CommandGive(plugin: EcoPlugin) : Subcommand(
@@ -48,6 +49,18 @@ class CommandGive(plugin: EcoPlugin) : Subcommand(
         if (physical) {
             val items = mutableListOf<ItemStack>().apply { repeat(amount) { add(crate.key.item) } }
 
+            if (plugin.configYml.getBool("track-player-keys")) {
+                items.map {
+                    val meta = it.itemMeta!!
+                    meta.persistentDataContainer.set(
+                        plugin.namespacedKeyFactory.create("player"),
+                        PersistentDataType.STRING,
+                        player.uniqueId.toString()
+                    )
+                    it.itemMeta = meta
+                }
+            }
+
             DropQueue(player)
                 .addItems(items)
                 .forceTelekinesis()

eco-core/core-plugin/src/main/resources/config.yml

@@ -4,6 +4,7 @@
 #
 
 no-key-velocity: 1.5 # The speed at which a player should be launched away from a crate if they try to open it without a key. Set to 0 to disable.
+track-player-keys: false # If an NBT tag should be added to keys that links them to a player - will prevent stacking some keys.
 
 # If a reward allows permission multipliers, the weights
 # will be multiplied by highest-priority multiplier that a player