--- a/hedgewars/uScript.pas	Tue Jan 21 11:48:43 2014 +0400
+++ b/hedgewars/uScript.pas	Tue Jan 21 15:56:52 2014 +0100
@@ -241,30 +241,66 @@
 function lc_enablegameflags(L : Plua_State) : LongInt; Cdecl;
 var i : integer;
 begin
-    for i:= 1 to lua_gettop(L) do
-        GameFlags := GameFlags or LongWord(lua_tointeger(L, i));
-    ScriptSetInteger('GameFlags', GameFlags);
+    if lua_gettop(L) = 0 then
+        begin
+        LuaParameterCountError('EnableGameFlags', '', lua_gettop(L));
+        lua_pushnil(L);
+        end
+    else
+        begin
+            for i:= 1 to lua_gettop(L) do
+                GameFlags := GameFlags or LongWord(lua_tointeger(L, i));
+            ScriptSetInteger('GameFlags', GameFlags);
+        end;
     lc_enablegameflags:= 0;
 end;
 
 function lc_disablegameflags(L : Plua_State) : LongInt; Cdecl;
 var i : integer;
 begin
-    for i:= 1 to lua_gettop(L) do
-        GameFlags := GameFlags and not(LongWord(lua_tointeger(L, i)));
-    ScriptSetInteger('GameFlags', GameFlags);
+    if lua_gettop(L) = 0 then
+        begin
+        LuaParameterCountError('DisableGameFlags', '', lua_gettop(L));
+        lua_pushnil(L);
+        end
+    else
+        begin
+        for i:= 1 to lua_gettop(L) do
+            GameFlags := GameFlags and not(LongWord(lua_tointeger(L, i)));
+        ScriptSetInteger('GameFlags', GameFlags);
+        end;
     lc_disablegameflags:= 0;
 end;
 
 function lc_cleargameflags(L : Plua_State) : LongInt; Cdecl;
 begin
-    // Silence hint
-    L:= L;
-    GameFlags:= 0;
-    ScriptSetInteger('GameFlags', GameFlags);
+    if lua_gettop(L) <> 0 then
+        begin
+        LuaParameterCountError('ClearGameFlags', '', lua_gettop(L));
+        lua_pushnil(L);
+        end
+    else
+        begin
+        GameFlags:= 0;
+        ScriptSetInteger('GameFlags', GameFlags);
+        end;
     lc_cleargameflags:= 0;
 end;
 
+function lc_getgameflag(L : Plua_State) : LongInt; Cdecl;
+begin
+    if lua_gettop(L) <> 1 then
+        begin
+        LuaParameterCountError('GetGameFlag', 'gameflag', lua_gettop(L));
+        lua_pushnil(L);
+        end
+    else
+        begin
+        lua_pushboolean(L, (GameFlags and LongWord(lua_tointeger(L, 1)) <> 0));
+        end;
+    lc_getgameflag:= 1;
+end;
+
 function lc_addcaption(L : Plua_State) : LongInt; Cdecl;
 begin
     if lua_gettop(L) = 1 then
@@ -2559,6 +2595,7 @@
 lua_register(luaState, _P'EnableGameFlags', @lc_enablegameflags);
 lua_register(luaState, _P'DisableGameFlags', @lc_disablegameflags);
 lua_register(luaState, _P'ClearGameFlags', @lc_cleargameflags);
+lua_register(luaState, _P'GetGameFlag', @lc_getgameflag);
 lua_register(luaState, _P'DeleteGear', @lc_deletegear);
 lua_register(luaState, _P'AddVisualGear', @lc_addvisualgear);
 lua_register(luaState, _P'DeleteVisualGear', @lc_deletevisualgear);