test

ypos = {}
maxY = 3
cy = 0

function doStuff(xx)
  for ymax = 1, maxY do
    if turtle.detectDown() then
      ypos[xx] = {cy, cy, cy}
      for cy = cy, 0 do
        turtle.up()
        cy = cy +1
        if cy == 0 then
          turtle.forward()
          cy = cy -1
        end
      end
    else
      turtle.down()
      cy = cy -1
    end
  end
end

function getColour(int)
  if int <= -5 then return colors.blue end
  if int == -4 then return colors.purple end
  if int == -3 then return colors.magenta end
  if int == -2 then return colors.cyan end
  if int == -1 then return colors.lightBlue end
  if int == 0  then return colors.pink end
  if int == 1  then return colors.yellow end
  if int == 2  then return colors.lime end
  if int == 3  then return colors.green end
  if int == 4  then return colors.brown end
  if int >= 5  then return colors.red end
  return colors.green
end

term.clear()
term.setCursorPos(0,0)
for xx = 1, 3 do
  doStuff(xx)
end
for xx = 1, 3 do
  for zz = 1, 3 do
    term.setBackgroundColor(getColour(ypos[xx][zz]))
    term.setCursorPos(xx,zz)
    print (" ")
  end
end