diff --git a/webapp/controller/GunController.class.php b/webapp/controller/GunController.class.php
index f18e00a..86472e2 100644
--- a/webapp/controller/GunController.class.php
+++ b/webapp/controller/GunController.class.php
@@ -53,6 +53,7 @@ class GunController extends BaseAuthedController {
         $typeId = getReqVal('type_id', 0);
         $talentId = getReqVal('talent_id', 0);
         $talentDb = GunTalent::find($typeId, $talentId);
+        $currLv = isset($talentDb) ? $talentDb['talent_lv'] : 0;
     }
 
 }
diff --git a/webapp/mt/GunTalentGrow.php b/webapp/mt/GunTalentGrow.php
index 6b58686..f9d6987 100644
--- a/webapp/mt/GunTalentGrow.php
+++ b/webapp/mt/GunTalentGrow.php
@@ -28,31 +28,26 @@ class GunTalentGrow {
         return $costList;
     }
 
-    public static function isFullLv($meta, $talentLv)
+    public static function getByIdLv($talentId, $talentLv)
     {
-        $fullLvMeta = self::getFullLvMeta($meta);
-        return $fullLvMeta && $talentLv >= $fullLvMeta['lv'];
+        self::mustBeIdLvHash();
+        $idMeta = getXVal($idLvHash, $talentId, null);
+        return $idMeta ? getXVal($idMeta, $talentLv, null) : null;
     }
 
-    public static function getFullLvMeta($meta)
+    protected static function mustBeIdLvHash()
     {
-        $currMeta = $meta;
-        while ($currMeta['nextid'] > 0) {
-            $currMeta = self::get($currMeta['nextid']);
-        }
-        return $currMeta;
-    }
-
-    public static function getByLv($meta, $talentLv)
-    {
-        $currMeta = $meta;
-        while ($currMeta) {
-            if ($currMeta['lv'] == $talentLv) {
-                return $currMeta;
+        if (!self::$idLvHash) {
+            self::$idLvHash = array();
+            foreach (self::getMetaList() as $meta) {
+                $idMeta = getXVal($idLvHash, $talentId, null);
+                if (!$idMeta) {
+                    $idMeta = array();
+                    $idLvHash[$meta['id']] = $idMeta;
+                }
+                $idLvHash[$meta['id']][$meta['talent_lv']] = $meta;
             }
-            $currMeta = self::get($currMeta['nextid']);
         }
-        return null;
     }
 
     protected static function getMetaList()
@@ -63,6 +58,7 @@ class GunTalentGrow {
         return self::$metaList;
     }
 
+    protected static $idLvHash;
     protected static $metaList;
 
 }