movefor = function()
if turtle.getFuelLevel()<10 then
turtle.select(16)
turtle.refuel(5)
turtle.select(15)
end
turtle.forward()
end

trueok=true
turtle.turnRight()
while trueok==false do
turtle.turnLeft()
for i=1,2 do
turtle.select(1)
while turtle.compareDown()==false do
if turtle.detect() then
turtle.up()
turtle.dig()
turtle.down()
turtle.dig()
end
movefor()
turtle.select(15)
end
turtle.turnLeft()
turtle.turnLeft()
end
turtle.turnRight()
turtle.select(1)
while currentok==false do
movefor()
turtle.select(15)
if turtle.compareDown()==true then
currentok=true
end
turtle.select(14)
if turtle.compareDown() then
currentok=true
trueok=true
end
end
end

turtle.turnRight()
turtle.turnRight()
turtle.select(1)
while turtle.compareDown()==false do
movefor()
turtle.select(14)
end
turtle.turnRight()
turtle.turnRight()
turtle.forward()
turtle.turnRight()
for i=1, 10 do
turtle.drop()
end
turtle.turnLeft()
turtle.turnLeft()