Selector Menu

options={ --This begins my options table.
  "option1",
  "option2",
  "option3",
}
function drawMenu() --Function where I draw the menu on the screen.
  if sel == 1 then--Tries to decide what the selected option is and draws the screen depending on that
    print("["..options[1].."]\n".. options[2].."\n".. options[3])
  elseif sel == 2 then
    print(options[1].."\n["..options[2].."]\n"..options[3])
  elseif sel == 3 then
    print(options[1].."\n"..options[2].."\n["..options[3].."]")
  else
    print("What?") --Pretty much just for  debugging purposes
  end
end

function clear() --Had to clear the screen a lot so I thought"Well! May as well make a function for it!"
  term.clear()
  term.setCursorPos(1,1)
end

sel = 1--The first option is selected when the screen is first drawn

clear()--clear the screen before starting
while true do
  drawMenu()--draw the menu
  event, key=os.pullEvent("key")--wait for a key to be pressed
  if key == 200 and sel ~= 1 then--long and excessive logic(I feel it could be improved) to decide what to select next
    sel = sel-1
    clear()
  elseif key == 200 and sel == 1 then
    sel = sel
    clear()
  elseif key == 208 and sel ~= 3 then
    sel = sel+1
    clear()
  elseif key == 208 and sel == 3 then
    sel = sel
    clear()
  else
    sel = sel
    clear()
  end
end