API 1.2.1

-- KekApi (1.2.1)


function centerText (text)
 local w, h = term.getSize()
 term.setCursorPos(math.floor(w / 2 - text:len() / 2 + .5), math.floor(h / 2 + .5))
 write(text)
end

function centerPrint (text)
 local textLen = string.len(text)
 local screenW,_ = term.getSize()
 local xCoords = tonumber(math.ceil((screenW / 2) - (textLen / 2)))
 local _,termY = term.getCursorPos()
 term.setCursorPos(xCoords,termY)
 print(text)
 return xCoords
end

function writeLine ()
 term.write("--------------------------------------------------")
end

function slowCenterPrint (text, time)
 local textLen = string.len(text)
 local screenW,_ = term.getSize()
 local xCoords = tonumber(math.ceil((screenW / 2) - (textLen / 2))) -- Da Ba Dee xD
 local _,termY = term.getCursorPos()
 term.setCursorPos(xCoords,termY)
 textutils.slowWrite(text, time)
 return xCoords
end

function drawMenu(tab, t,d)
 wybor = 1
 back = term.getBackgroundColor()
 w,h = term.getSize()
 scr = 0
 while true do
  c,v = term.getSize()
  if #tab > 10 then
   tabL = 10
  else
   tabL = #tab
  end
  a = 0
  for i=1,tabL do
   a = a + 1
   if t == nil and d == nil then
    term.setCursorPos(1, a + math.floor(h / 2 - .5) - #tab / 2 + .5)
   else
    term.setCursorPos(t, d + a - 1)
   end
   term.clearLine()
   if a+scr == wybor then
    term.setBackgroundColor(colors.lightGray)
   else
    term.setBackgroundColor(back)
   end
   if t == nil and d == nil then
    centerPrint(" ".. tab[i+scr].. " ")
   else write(" ".. tostring(tab[i+scr]).. " ") end
   term.setBackgroundColor(back)
  end
  event, key = os.pullEvent("key")
  if key == keys.up and wybor>1 then
   if wybor > 10 then
    scr = scr - 1
   end
   wybor = wybor - 1
  elseif key == keys.down and wybor<#tab then
   wybor = wybor + 1
   if wybor > 10 then
    scr = scr + 1
   end
  elseif key == keys.enter then
   term.clear()
   return wybor
  end
 end
end