dimensional_marker.sc

global_overworld = 'overworld';
global_nether = 'the_nether';
global_valid_dims = {global_overworld, global_nether};

__config() -> {
   'commands' ->
   {
      '' -> _() -> main(),
   }
};

main() -> (
    print('this is a root call');
    player = player();
    dim = query(player, 'dimension');
    other_dim;
    print('dim: ' + dim);
    if (!has(global_valid_dims, dim), print('Markers can only be created while in the nether or the overworld'); return(););

    oCoords;
    nCoords;

    if (dim == global_overworld, (
        other_dim = global_nether;
        oCoords = query(player, 'pos');
        delete(oCoords, 1); //delete y
        nCoords = [];
        for (oCoords, (
            put(nCoords, _i, _/8);
        ));

        print('oCoords: ' + oCoords);
        print('nCoords: ' + nCoords);
    ), //else
    (
        other_dim = global_overworld;
        nCoords = query(player, 'pos');
        delete(nCoords, 1); //delete y

        oCoords = [];
        for (nCoords, (
            put(oCoords, _i, _*8);
        ));
    ));

    in_dimension(global_overworld, draw_shape('line', -1,
    {
        'from' -> [get(oCoords, 0), 0, get(oCoords, 1)],
        'to' -> [get(oCoords, 0), 255, get(oCoords, 1)]
    }));

    in_dimension(global_nether, draw_shape('line', -1,
    {
        'from' -> [get(nCoords, 0), 0, get(nCoords, 1)],
        'to' -> [get(nCoords, 0), 255, get(nCoords, 1)]
    }));
)