globalvar grid;
  grid = mp_grid_create(0, 0, room_width div 32, room_height div 32, 32, 32);
  mp_grid_add_instances(grid, obj_wall, false);  
  with (obj_Enemy)
     {
     path = path_add();
     if mp_grid_path(grid, path, x, y, obj_Player.x, obj_Player.y, 1)
        {
        path_start(path, 0, 3, 0);
        }
     }