function refuel()
    print(turtle.getFuelLevel())
    if  turtle.getFuelLevel() < 400 then
        found = find("minecraft:coal")
        if found then
            turtle.select(found)
            turtle.refuel(1)
        end
    end
end

function find(name)
    for i = 1,16 do
        sname = turtle.getItemDetail(i)
        if sname then
            sname = sname.name
            if name == sname then
                return i
            end
        end
    end
    return false
end 

function fram(steps)
    refuel()
    steps = steps or 9
    for i = 1,steps do
        turtle.dig()
        turtle.digDown()
        turtle.digUp()
        turtle.forward()
    end
end

function main()
    while true do
        suc,item = turtle.inspect()
        if item.name == "computercraft:turtle_normal" then
            turtle.turnRight()
            break
        end
        turtle.turnRight()
    end

    
    fram()
    turtle.turnRight()
    fram(1)
    turtle.turnRight()
    fram()
    turtle.turnLeft()
    fram(1)
    turtle.turnLeft()
    fram()
    turtle.turnRight()
    fram(1)
    turtle.turnRight()
    fram()
    turtle.turnLeft()
    fram(1)
    turtle.turnLeft()
    fram()
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.digUp()
    turtle.digDown()
    turtle.down()
    turtle.digDown()
    turtle.down()
    turtle.digDown()
    turtle.down()
    fram()
    turtle.turnRight()
    fram(1)
    turtle.turnRight()
    fram()
    turtle.turnLeft()
    fram(1)
    turtle.turnLeft()
    fram()
    turtle.turnRight()
    fram(1)
    turtle.turnRight()
    fram()
    turtle.turnLeft()
    fram(1)
    turtle.turnLeft()
    fram()
    turtle.digUp()
    turtle.digDown()
    turtle.up()
    turtle.digUp()
    turtle.up()
    turtle.digUp()
    turtle.up()

end

main()