Surface *img_previous_level_bt, *img_next_level_bt, *img_previous_sector_bt, *img_next_sector_bt;
ButtonGroup *tiles_board, *tiles_layer, *level_options;
- int cur_layer;
+ int gameobjs_first_id, cur_layer;
std::vector <std::vector <int> > selection;
Vector selection_ini, selection_end;