Added admin commands for getting and setting attributes

::getattribute [playername] attributename
::setattribute [playername] attributename value

Server/src/main/core/game/system/command/sets/PlayerAttributeCommandSet.kt

@@ -0,0 +1,99 @@
+package core.game.system.command.sets
+
+import core.api.getAttribute
+import core.api.setAttribute
+import core.game.node.entity.player.Player
+import core.game.system.command.Privilege
+import core.game.world.repository.Repository
+import core.plugin.Initializable
+
+/**
+ * In game setting of simple attributes. Not for complex objects or enums.
+ * @author ovenbread
+ */
+@Initializable
+class PlayerAttributeCommandSet : CommandSet(Privilege.ADMIN) {
+    override fun defineCommands() {
+
+        /**
+         * Gets the value of an attribute on a player.
+         */
+        define("getattribute") { player, args ->
+            if (args.size < 2) {
+                reject(player, "Usage ::getattribute [playername] attributename")
+            }
+            var attributeName = ""
+
+            // If stats is called without a username, return self.
+            var queryPlayer: Player? = null
+            if(args.size == 2){
+                queryPlayer = player
+                attributeName = args[1]
+            }
+            // If stats is called with a username, find the player or set to null.
+            if(args.size == 3) {
+                queryPlayer = Repository.getPlayerByName(args[1])
+                attributeName = args[2]
+            }
+            // If player is not found, return error.
+            if(queryPlayer == null){
+                reject(player,"Invalid player or player not online.")
+                return@define
+            }
+
+            notify(player,"Attribute: " + attributeName + " Value: " + getAttribute(queryPlayer!!, attributeName, "").toString())
+            return@define
+        }
+
+        /**
+         * Sets the value of an attribute on a player.
+         */
+        define("setattribute") { player, args ->
+            if (args.size < 2) {
+                reject(player, "Usage ::setattribute [playername] attributename value")
+            }
+            var attributeName = ""
+            var value = ""
+
+            // If stats is called without a username, return self.
+            var queryPlayer: Player? = null
+            if(args.size == 3){
+                queryPlayer = player
+                attributeName = args[1]
+                value = args[2]
+            }
+            // If stats is called with a username, find the player or set to null.
+            if(args.size == 4) {
+                queryPlayer = Repository.getPlayerByName(args[1])
+                attributeName = args[2]
+                value = args[3]
+            }
+            // If player is not found, return error.
+            if(queryPlayer == null){
+                reject(player,"Invalid player or player not online.")
+                return@define
+            }
+            // Please be careful when editing attributes.
+            // If string input is an integer, convert to an integer and set it to the attribute.
+            if (value.toIntOrNull() != null){
+                setAttribute(queryPlayer!!, attributeName, value.toIntOrNull())
+                return@define
+            }
+            // If string input is a float(decimal number), convert to a float and set it to the attribute.
+            if (value.toFloatOrNull() != null){
+                setAttribute(queryPlayer!!, attributeName, value.toFloatOrNull())
+                return@define
+            }
+            // If string matches the text "true", set the attribute value to the boolean true.
+            if (value == "true"){
+                setAttribute(queryPlayer!!, attributeName, true)
+                return@define
+            }
+            // If string matches the text "false", set the attribute value to the boolean false.
+            if (value == "false"){
+                setAttribute(queryPlayer!!, attributeName, false)
+                return@define
+            }
+        }
+    }
+}