Elevator Script

--[[ Local Variables ]]--

local termWidth, termHeight = term.getSize()
local selectedItem = 1
local inMainMenu = true

--[[ Elevator Movement Methods ]]--

function up()
 --shouldn't be needed but in case system needs reset
 --indiv. level computers handle going back
 redstone.setOutput("left",true)
 sleep(0.2)
 redstone.setOutput("left",false)
end

function down()
 redstone.setOutput("back",true)
 sleep(0.2)
 rs.setOutput("back",false)
end

function downMainFloor()
 term.clear()
 term.setCursorPos(1,1)
 term.setTextColor(colors.purple)
 print("Calling Elevator")
 for i = 1,6 do
  down()
 end
 print("Elevator has arrived, you have precisely 3 seconds to get on.")
 sleep(3)
end

--[[ Menu Methods ]]--

function level45()
 downMainFloor()
 for i = 1, 2 do
  down()
 end
end

function level25()
 downMainFloor()
 for i = 1, 2 do
  down()
 end
end

function level10()
 downMainFloor()
 for i = 1, 2 do
  down()
 end
end

function exit()
 inMainMenu = false
end

--[[ Menu Definitions ]]--

mainMenu = {
 [1] = { text = "Level 10:Best for Diamonds", handler = level10 } ,
 [2] = { text = "Level 25:Best for Lead/Silver" , handler = level25 } ,
 [3] = { text = "Level 45:Best for Copper" , handler = level45 } ,
 [4] = { text = "Exit" , handler = exit }
}

--[[ Printing Methods ]]--

function printMenu( mainMenu )
 for i = 1,#mainMenu do
  if i == selectedItem then
   term.setTextColor(colors.red)
   print(mainMenu[i].text)
  else
   term.setTextColor(colors.white)
   print(mainMenu[i].text)
  end
 end
end

--[[ Handler Methods ]]--

function onKeyPressed( key, mainMenu )
 if key == keys.enter then
  onItemSelected(mainMenu)
 elseif key == keys.up then
  if selectedItem > 1 then
   selectedItem = selectedItem - 1
  end
 elseif key == keys.down then
  if selectedItem < #mainMenu then
   selectedItem = selectedItem + 1
  end
 end
end

--[[ Main Methods ]]--

function main()
 while inMainMenu do
  term.clear()
  term.setCursorPos(1,1)
  term.setTextColor(colors.white)
  printMenu(mainMain)

  event,key = os.pullEvent("key")
  onKeyPressed(key,menu)
 end
end

main()