foundMonitor = false
mw, mh = 0
spawners = {}
spawners[0] = false
spawners[1] = true
red = 16384
green = 32
function drawBox(x,y,w,h,c)
    i, j = 0;
    for i = x, w do
        for j = y, h do
            paintutils.drawPixel(i,j,c)
        end
    end
end
function drawGUI()
    mon.clear()
    mon.setCursorPos(1,1)
    if spawners[0] == true then
        drawBox(mw - mw/2, mh - mh/2, 5,2, 32)
    else
        drawBox(mw - mw/2, mh - mh/2, 5,2, 2)
    end
    if spawners[1] == true then
        drawBox(mw - mw/2, mh + mh/2, 5,2, 32)
    else
        drawBox(mw - mw/2, mh + mh/2, 5,2, 2)
    end
end
function update()
print("updating...")
end

function init()
if peripheral.isPresent("top") then
    mon = peripheral.wrap("top")
    mw, mh = mon.getSize()
    term.redirect(mon)
    foundMonitor = true
else
    foundMonitor = false
    print("Monitor not found - Aborting")
end
if foundMonitor == true then
    while true do
        update()
        drawGUI()
        sleep(1)
    end
end
end

init()