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diff --git a/Lua/src/lua/ULuaUtils.pas b/Lua/src/lua/ULuaUtils.pas
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+++ b/Lua/src/lua/ULuaUtils.pas
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+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://ultrastardx.svn.sourceforge.net/svnroot/ultrastardx/branches/experimental/Lua/src/lua/ULuaGl.pas $
+ * $Id: ULuaGl.pas 1555 2009-01-11 18:19:42Z Hawkear $
+ *}
+
+unit ULuaUtils;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses ULua;
+
+{ converts a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  to an integer with the value:
+    0b11001
+  does not pop anything }
+function Lua_ToBinInt(L: PLua_State; idx: Integer): Integer;
+
+{ this is a helper in case an evenet owner don't has no use for the results
+  returns number of popped elements }
+function Lua_ClearStack(L: Plua_State): Integer;
+
+
+implementation
+
+{ converts a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  to an integer with the value:
+    0b11001
+  does not pop anything }
+function Lua_ToBinInt(L: PLua_State; idx: Integer): Integer;
+  var
+    I: Integer;
+begin
+  // default: no bits set
+  Result := 0;
+
+  lua_checkstack(L, 3);
+
+  if (idx < 0) then
+    dec(idx); // we will push one value before using this
+
+  lua_PushNil(L);
+  while (lua_next(L, idx) <> 0) do
+  begin
+    if (lua_isNumber(L, -1)) then
+    begin //check if we got an integer value from 1 to 32
+      I := lua_toInteger(L, -1);
+      if (I >= 1) and (I <= 32) then
+        Result := Result or 1 shl (I - 1);
+    end;
+
+    // pop value, so key is on top
+    lua_pop(L, 1);
+  end;
+end;
+
+{ this is a helper in case an evenet owner don't has no use for the results
+  returns number of popped elements }
+function Lua_ClearStack(L: Plua_State): Integer;
+  var I: Integer;
+begin
+  Result := lua_gettop(L);
+  lua_pop(L, Result);
+end;
+
+end.
+\ No newline at end of file