testmap

function goForward(a)
  for forward=1,a do
    if turtle.detect() then
      turtle.dig()
    end
    turtle.forward()
  end
end

local rows = {2,"dig",5,"dig",5,"dig",
  2,"right","dig",5,"dig",5,"dig",3,
  "left","dig",5,"dig",5,"dig",2,
  "right","dig",5,"dig",5,"dig",3,
  "left","dig",5,"dig",5,"dig",5,"dig",
  "right",3,"dig",5,"dig",5,"dig",
  "left",2,"dig",5,"dig",5,"dig",
  "right",3,"dig",5,"dig",5,"dig",
  "left",2,"dig",5,"dig",5,"dig",2,
  "right","dig",5,"dig",5,"dig",5,
  "dig","left",2,"dig",5,"dig",5,"dig",
  2,"right","dig",5,"dig",5,"dig",3,
  "left","dig",5,"dig",5,"dig",2,
  "right","dig",5,"dig",5,"dig",3,
  "left","dig",5,"dig",5,"dig",5,"dig",
  "right",3,"dig",5,"dig",5,"dig",2}

for rowLoop=1,#rows do
  if rows[rowLoop] == "dig" then
    turtle.digDown()
  elseif rows[rowLoop] == "left" then
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
  elseif rows[rowLoop] == "right" then
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
  else
    goForward(rows[rowLoop])
  end
end
turtle.turnRight()
goForward(15)
turtle.turnRight()