Function LuaGetIndex

engine/gui/src/gui_script.cpp:1018–1045

gets the index of the specified node * * Retrieve the index of the specified node among its siblings. * The index defines the order in which a node appear in a GUI scene. * Higher index means the node is drawn on top of lower indexed nodes. * * @name gui.get_index * @param node [type:node] the node to retrieve the id from * @return index [type:number] the in

     * ```
     */
    static int LuaGetIndex(lua_State* L)
    {
        int top = lua_gettop(L);
        (void) top;

        Scene* scene = GuiScriptInstance_Check(L);

        HNode hnode;
        InternalNode* n = LuaCheckNodeInternal(L, 1, &hnode);

        uint32_t index = 0;
        uint16_t i = scene->m_RenderHead;
        if (n->m_ParentIndex != INVALID_INDEX)
        {
            InternalNode* parent = &scene->m_Nodes[n->m_ParentIndex];
            i = parent->m_ChildHead;
        }
        while (i != INVALID_INDEX && i != n->m_Index)
        {
            ++index;
            i = scene->m_Nodes[i].m_NextIndex;
        }
        lua_pushnumber(L, index);

        assert(top + 1 == lua_gettop(L));

        return 1;
    }

    /*# deletes a node
     *