TitanOS v1

--Monitor Setup

local mon = peripheral.wrap("right")
mon.setTextScale(1)
mon.setTextColor(colors.white)
local button={}
mon.setBackgroundColor(colors.black)

--Variable Definition

buttonPush = false
option = 0


--Functions

function home()
    shell.run("TitanOS")
end

function setTable(name, func, xmin, xmax, ymin, ymax)
   button[name] = {}
   button[name]["func"] = func
   button[name]["active"] = true
   button[name]["xmin"] = xmin
   button[name]["ymin"] = ymin
   button[name]["xmax"] = xmax
   button[name]["ymax"] = ymax
end


function fill(text, color, bData)
   mon.setBackgroundColor(color)
   local yspot = math.floor((bData["ymin"] + bData["ymax"]) /2)
   local xspot = math.floor((bData["xmax"] - bData["xmin"] - string.len(text)) /2) +1
   for j = bData["ymin"], bData["ymax"] do
      mon.setCursorPos(bData["xmin"], j)
      if j == yspot then
         for k = 0, bData["xmax"] - bData["xmin"] - string.len(text) +1 do
            if k == xspot then
               mon.write(text)
            else
               mon.write(" ")
            end
         end
      else
         for i = bData["xmin"], bData["xmax"] do
            mon.write(" ")
         end
      end
   end
   mon.setBackgroundColor(colors.black)
end


function screen()
   local currColor
   for name,data in pairs(button) do
      local on = data["active"]
      if on == true then currColor = colors.lime else currColor = colors.red end
      fill(name, currColor, data)
   end
end


function checkxy(x, y)
   for name, data in pairs(button) do
      if y>=data["ymin"] and  y <= data["ymax"] then
         if x>=data["xmin"] and x<= data["xmax"] then
            data["func"]()
            data["active"] = not data["active"]
            print(name)
         end
      end
   end
end


function heading(text,a)
   w, h = mon.getSize()
   mon.setCursorPos((w-string.len(text))/2+1,a)
   mon.write(text)
end


function dummy()
    buttonPush = not buttonPush
end

function menu1()
    if buttonPush == true then
        dummy()
    end
    button = {}
    mon.clear()
    sleep(.25)
    sleep(.25)
    heading("Please follow the On Screen Navigation Below",1)
    while buttonPush == false do
        setTable("Option1", one, 5, 15, 3, 5)
        setTable("Option2", two, 5, 15, 7, 9)
        setTable("Option3", three, 5, 15, 11, 13)
        screen()
        local e, side, x,y = os.pullEvent("monitor_touch")
        print(x..":"..y)
        checkxy(x, y)
        sleep(.1)
    end
end

function menu2()
    if buttonPush == true do
        dummy()
    end
    button = {}
    mon.clear()
    sleep(.25)
    while buttonPush == false then
        heading("Button ",1)
        mon.write(option.." was pressed.")
        setTable("Back", menu1, 50, 55, 17, 19)
        setTable("Home", home, 2, 6, 16, 18)
        screen()
        local e, side, x, y = os.pullEvent("monitor_touch")
        print(x..":"..y)
        checkxy(x, y)
        sleep(.1)
    end
end

function one()
    dummy()
    option = 1
    menu2()
end


function two()
    dummy()
    option = 2
    menu2()
end

function three()
    dummy()
    option = 3
    menu2()
end

--ASCII Variables

local Logo = {
  [[           _  __                                      _             ___          ]],
  [[   o O O  | |/ /    ___    _ __      _ _   __ _    __| |    ___    / __|    ___  ]],
  [[  o       | ' <    / _ \  | '  \    | '_| / _' |  / _' |   / -_)  ( |__    / _ \ ]],
  [[ TS__[O]  |_|\_\   \___/  |_|_|_|  _|_|_  \__,_|  \__,_|   \___|   \___|   \___/ ]],
  [[{======|__|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""|_|"""""| |"""""|_|"""""|]],
  [[/o--000'""'-0-0-'"'-0-0-'"'-0-0-'"'-0-0-'"'-0-0-'"'-0-0-'"'-0-0-'.'-0-0-'"'-0-0-']],
}

--Program
--------------

--Opening Screen
while buttonPush == false do
    mon.clear()
    mon.setTextScale(1)
    term.redirect(mon)
    term.clear()
    term.setCursorPos(1,1)
    for i = 1, #Logo do
        print(Logo[i])
    end
    heading("Welcome to Titan Tower!",12)
    heading("A Komrade Co. Enterprise.",13)
    term.restore()
   setTable("Press to Begin", dummy, 30, 50, 15, 17)
   screen()
   local e,side,x,y = os.pullEvent("monitor_touch")
   print(x..":"..y)
   checkxy(x,y)
   sleep(.1)
end

menu1()

menu2()