Portal API

local portals = {
[1] = {owner="HUB(X)";   id=137},
[2] = {owner="JG"; id=147},
[3] = {owner="Erwin"; id=138},
[4] = {owner="maze farm"; id=0}
}

function showPortals()
  send("clearButtons")
  ix = 1
  for i=1,#portals do
    if i % 2 ~= 0 then
      send ("addButton 1 ".. ix .. " false 4 p:".. portals[i].owner)
      print (i .. " @ 1 " .. ix)
    else
      send ("addButton m ".. ix .." false 4 p:" .. portals[i].owner)
      print (i .. " @ 9 " .. ix)
      ix = ix + 2
    end
  end



  send("printButtons")
end

function openPortals(p2owner)
  pid = getPortal(p2owner)
  if pid == 0 or pid == 1 then
    print ("Portal " .. p2owner .. " ex. nicht!")
    return
  end
  print ("opening @ " .. p2owner )
  p = portals[pid]



  send("setCursorPos 4 m")
  send("write <Portal>")

  print ("freezing b/c a portal is beeing created! ")
  print (p.id)

  sa =  rednet.send(portals[1].id, "OPEN")
  sb =  rednet.send(p.id, "OPEN")
  sleep(4)
  sa =  rednet.send(portals[1].id, "CLOSE")
  sb =  rednet.send(p.id, "CLOSE")

  send ("clearLine")
end

function getPortal(owner)
  for i=1,#portals do
    if portals[i].owner == owner then
      return i
    end
  end
  return 0
end

function getPortalbyID(id)
  for i=1, #portals do
    if portals[i].id == id then
       return portals[i]
    end
  end
  return nil
end