Warp_Summon

Side = { "bottom", "top", "back", "left", "right" }
for i = 1,5 do
  print(Side[i].." : "..tostring(peripheral.getType(Side[i])))
  if peripheral.getType(Side[i]) == "warpcore" then
    warp = peripheral.wrap(Side[i])
    print("Warp found at "..Side[i])
    break
  else
    print("No core at "..Side[i])
  end
end
if warp==nil then
  error("Can't find warp core!")
end


    Style = {
     CDeflt = colors.white,
     BGDeflt = colors.blue,
     CTitle = colors.black,
     BGTitle = colors.cyan,
     CWarn = colors.white,
     BGWarn = colors.red
    }

    function SetColorDeflt()
     term.setBackgroundColor(Style.BGDeflt)
     term.setTextColor(Style.CDeflt)
    end

    function SetColorTitle()
     term.setBackgroundColor(Style.BGTitle)
     term.setTextColor(Style.CTitle)
    end

    function SetColorWarn()
     term.setBackgroundColor(Style.BGWarn)
     term.setTextColor(Style.CWarn)
    end

    function Clear()
     term.clear()
     term.setCursorPos(1,1)
    end

    function Show(Text)
     term.write(Text)
     local xt,yt = term.getCursorPos()
     term.setCursorPos(1, yt+1)
    end

    function ShowTitle(Text)
     SetColorTitle()
     term.setCursorPos(12, 1)
     Show(Text)
     SetColorDeflt()
    end

    function ShowMenu(Text)
     term.write(Text)
     local xt, yt = term.getCursorPos()
     for i = xt, 51 do
      term.write(" ")
     end
     term.setCursorPos(1, yt+1)
    end

    function ShowWarning(Text)
      SetColorWarn()
      term.setCursorPos(10, 19)
      term.write(" "..Text.." ")
      SetColorDeflt()
    end

   function Summon()
     Clear()
     ShowTitle("<==== Summon players ====>")
     local players = Explode(",", warp.get_attached_players())
     for i = 1, #players do
      Show(i..". "..players[i])
     end
     SetColorTitle()
     ShowMenu("Enter player number")
     ShowMenu("or press enter to summon everyone")
     SetColorDeflt()
     sleep(0.3)
     term.write(":")
     local input = read()
     if input == "" then
      warp.summon_all()
     else
      input = tonumber(input)
      warp.summon(input - 1)
     end
   end

Summon()