computercraft touch select where to go

mouseWidth = 0
mouseHeight = 0

monitor = peripheral.wrap("monitor_6")

monitor.clear()

monitor.setCursorPos(1,1)

w,h=monitor.getSize()

print(w)
print(h)

monitor.setBackgroundColour((colours.lime))

monitor.setCursorPos(20,5)

monitor.write(" North  ")

monitor.setCursorPos(28,10)

monitor.write(" East ")

monitor.setCursorPos(12,10)

monitor.write(" West ")

monitor.setCursorPos(20,15)

monitor.write(" South ")

monitor.setBackgroundColour((colours.lime))

function north()
rs.setOutput("back", true)
sleep(1)
os.reboot()
end

function east()
rs.setOutput("right", true)
sleep(1)
os.reboot()
end

function south()
rs.setOutput("button", true)
sleep(1)
os.reboot()
end

function west()
rs.setOutput("left", true)
sleep(1)
os.reboot()
end

function checkClickPosition()
  if mouseWidth > 12 and mouseWidth < 28 and mouseHeight == 5 then

    north()

  elseif mouseWidth > 20 and mouseWidth < 35 and mouseHeight == 10 then

    east()

    elseif mouseWidth > 12 and mouseWidth < 28 and mouseHeight == 15 then

    south()

    elseif mouseWidth > 5 and mouseWidth < 18 and mouseHeight == 10 then

    west()

  end
end


repeat


  event,p1,p2,p3 = os.pullEvent()


   if event=="monitor_touch" then


     mouseWidth = p2 -- sets mouseWidth
     mouseHeight = p3 -- and mouseHeight
     checkClickPosition() -- this runs our function

   end

until event=="char" and p1==("x")