if (collision_loc == surface.landing_right) {
        if (do_olog_write) {
          /* just some logging stuff */
          char col = do_other_col ? 's' : 'b';
          fprintf(olog, "l %d,%d %d,%d %c;", (int)ship.x, (int)ship.y, (int)stale.x, (int)stale.y, col);
        }
        if (successful_landing(ago)) {
          /* hit landing pad, not too fast */
          float score = 10 * ago.fuel + (20 - std::abs(ago.v_x)) + (30 - std::abs(ago.v_y));
          return score;
        } else {
          /* hit landing pad but too fast */
          float score = (20 - std::abs(ago.v_x)) + (30 - std::abs(ago.v_y));
          return score;
        }
      } else {
        /* missed landing pad */
        float score = 20 / (distance_from_landing(stale) + 1);
        return score;
      }
    }