static int l_anim_set_layers_from(lua_State *L) { THAnimation* pAnimation = luaT_testuserdata<THAnimation>(L); const THAnimation* pAnimationSrc = luaT_testuserdata<THAnimation>(L, 2, luaT_environindex); pAnimation->setLayersFrom(pAnimationSrc); lua_settop(L, 1); return 1; }