Strip v2.2

--[[
Version 2.2
Written by: Tom Nordloh (Notze)

This script will do the Stripmining
for you. Amount, length, spacing of
thebranches and some other stuff are
adjustable.
If you don't make adjustments just
place the following things into the
Turtles inventory:
Slot 1: fuel (e.g. Coal)
Slot 2: torches
Slot 3: filling material
]]

-- MAKE YOUR ADJUSTMENTS HERE
branch = {amount = 5,   -- the amount of "branch-pairs"
      length = 32,  -- the length of each branch
      space  = 5}   -- the space between each branch-pair
slot = {fuel  = 1,  -- the slotnumber for fuel
    torch = 2,  -- the slotnumber for torches
    fill  = 3}  -- the slotnumber for filling material
other = {torch = true,  -- place torches? (true=yes/false=no)
         close = true}  -- close the branches? (true=yes/false=no)
-- END OF ADJUSTMENTS

function main()
 for i=1, branch.amount, 1 do
  refuel(1+(branch.space+branch.length*4)/96)
  forward(1)
  turnAround()
  torch()
  turnAround()
  forward(branch.space)
  turnLeft()
  forward(branch.length)
  back(branch.length)
  turnAround()
  forward(branch.length)
  back(branch.length)
  turnLeft()
 end
end

function forward(length)
 for i=1, length, 1 do
  while turtle.detect() or turtle.detectUp() do
   turtle.dig()
   turtle.digUp()
   sleep(0.5)
  end
  if turtle.detectDown() == false then
   turtle.select(slot.fill)
   turtle.placeDown()
  end
  turtle.forward()
 end
end

-- TurtleAPI

function refuel(amount)
 if turtle.getFuelLevel() == "unlimited" then return end
 if turtle.getFuelLevel() < 96*amount then
  turtle.select(slot.fuel)
  turtle.refuel(amount)
 end
end

function back(length)
 for i=1, length, 1 do
  if i==9 then torch() end --places a torch after the first 8 blocks and
  if (i-8)%16==0 and i>9 then torch() end --then another every 16 blocks
  turtle.back()
  if i==length-1 and other.close then --closes the branch
   turtle.select(slot.fill)
   turtle.placeUp()
  end
 end
end

function turnLeft()
 turtle.turnLeft()
end

function turnRight()
 turtle.turnRight()
end

function turnAround()
 turtle.turnRight()
 turtle.turnRight()
end

function torch()
 if other.torch then
  turtle.select(slot.torch)
  turtle.place()
 end
end

main()