window = curses.stdscr()

n = 0

function render(window)
  window:clear()
  window:attron(curses.A_BOLD)
  window:attron(curses.color_pair(6))
  window:mvaddstr(10, 10, "     ")
  window:mvaddstr(10, 11, n)
  window:attroff(curses.color_pair(6))
  window:attroff(curses.A_BOLD)
  curses.refresh()
end

menu = {Enter="increment"}
function update(window)
  local key = curses.getch()
  if key == 10 then
    n = n+1
  end
end

function main()
  for i=1,7 do
    curses.init_pair(i, 0, i)
  end

  while true do
    render(window)
    update(window)
  end
end
main()