Branch

-- Variables
turtle.select(1)
local tArgs = { ... }
local togo = tonumber(tArgs[1])
togo = togo or 1
print("Branching")

-- Functions
function getFuel(amount)
 if turtle.getFuelLevel() < 5 then
  turtle.select(16)
  turtle.refuel(amount)
  turtle.select(1)
 end
end

function goBack()
 turtle.turnRight()
 turtle.turnRight()
end

function mine()
 if turtle.detectUp() then
  turtle.digUp()
 end
 turtle.up()
 if turtle.detectUp() == false then
  turtle.select(2)
  turtle.placeUp()
  turtle.select(1)
 end
 turtle.turnRight()
 if turtle.detect() == false then
  turtle.select(2)
  turtle.place()
  turtle.select(1)
 end
 turtle.turnLeft()
 turtle.turnLeft()
 if turtle.detect() == false then
  turtle.select(2)
  turtle.place()
  turtle.select(1)
 end
 turtle.turnRight()
 turtle.down()


 if turtle.detectDown() then
  turtle.digDown()
 end
 turtle.down()
 if turtle.detectDown() == false then
  turtle.select(2)
  turtle.placeDown()
  turtle.select(1)
 end
 turtle.turnRight()
 if turtle.detect() == false then
  turtle.select(2)
  turtle.place()
  turtle.select(1)
 end
 turtle.turnLeft()
 turtle.turnLeft()
 if turtle.detect() == false then
  turtle.select(2)
  turtle.place()
  turtle.select(1)
 end
 turtle.turnLeft()
 turtle.up()
end

-- Branching
for i = 1, togo do
 getFuel(1)
 if turtle.detect() then
  repeat
   turtle.dig()
   sleep(0.25)
  until turtle.detect() == false
  turtle.forward()
  mine()
 else
  turtle.forward()
  mine()
 end
 if togo >= 10 then
  if (i % 10 == 0) then
   turtle.placeDown()
  end
 end
end
-- Go Back
goBack()
for r = 1, togo do
 getFuel(1)
 turtle.forward()
end