@verb #3838:"exit_ahead enter_ahead" this none this rxdo #3135
@program #3838:"exit_ahead enter_ahead" this none this
if ((t = this:has_tick(player)) != 0)
  l = t.maze_layout[t.cur_sq[1]][t.cur_sq[2]]
  tl = verb[2] == "n" ? t.start_l | t.end_l
  return index(l, tl) != 0 && index(l, tostr(t.dir)) != 0
endif
.