stripMineTR

function clear()
 term.clear()
 term.setCursorPos(1,1)
end

function checkfuel()
 if turtle.getFuelLevel()<7 then
  return true
 else
  return false
 end
end

function refuel(quantity)
 for i1=1,16 do
  turtle.select(i1)
  if turtle.refuel(quantity) then
   break
  else
   if i1==16 then
    return true
   end
  end
 end
 turtle.select(1)
end

function getItemIndex(itemString)
  for iSearch = 1,16 do
    if turtle.getItemDetail(iSearch) ~= nil and turtle.getItemDetail(iSearch) == itemString then
      return iSearch
    end
  end
  return -1
end

function digF()
    while turtle.detect() do
        turtle.dig()
        sleep(0.25)
    end
    turtle.forward()
end

function digFU()
    turtle.digUp()
    digF()
end

function placeTorch()
    slot = turtle.getSelectedSlot()
  itemIndex = getItemIndex("minecraft:torch");
  if itemIndex ~= -1 then
    turtle.select(itemIndex);
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.place()
    turtle.turnLeft()
    turtle.turnLeft()
    end
    turtle.select(slot)
end

function placeGround()
    if not turtle.detectDown() then
        slot = turtle.getSelectedSlot()
    itemIndex = getItemIndex("minecraft:cobblestone");
    if itemIndex ~= -1 then
        turtle.select(itemIndex)
                turtle.placeDown()
            end
        turtle.select(slot)
        end
    end
end

function stripmine()
--Vorwärts
 for i=1,3 do
  if checkfuel() then
   refuel(1)
  end
  digFU()
  placeGround()
 end
 turtle.digUp()
 placeTorch()

--Rechts
 turtle.turnRight()
 for i=1,20 do
  if checkfuel() then
   refuel(1)
  end
  digF()
  placeGround()
  if i == 11 then
    placeTorch()
  end
 end

 turtle.digUp()
 turtle.up()

--Direkt die linke Seite mitnehmen
 turtle.turnRight()
 turtle.turnRight()

 digF()

 placeTorch()

 for i=1,39 do
  if checkfuel() then
   refuel(1)
  end
  digF()
 end

 turtle.digDown()
 turtle.down()

--Zurück in die Mitte
 turtle.turnRight()
 turtle.turnRight()
 for i=1,20 do
  if checkfuel() then
   refuel(1)
  end
  digF()
  placeGround()
  if i == 1 or i == 11 then
    placeTorch()
  end
 end
 turtle.turnLeft()
 digF()
 placeGround()
end

function roger()
 x,y=term.getSize()
 for i=1,x do
  write("-")
 end
 print("Stripmine by TRangeman")
 print("")
 print("Digging "..(length).." side tunnels!")
 for i=1,x do
  write("-")
 end
 sleep(0.7)
end

function length()
 x,y=term.getSize()
 for i=1,x do
  write("-")
 end
 print("Stripmine by TRangeman")
 print("")
 print("Enter number of sidetunnels:")
 length=read()
 roger()
end

function output()
 x,y=term.getSize()
 for i=1,x do
  write("-")
 end
 print("Stripmine by TRangeman")
 print("")
 print("Stripmining...")
 for i=1,x do
  write("-")
 end
end

function setup()
 clear()
 length()
end

function main()
 clear()
 output()
 for tmp=1,length do
  stripmine()
 end
end

function callEnd()
    print("Mining finished!")
end

function task()
 setup()
 main()
end

task()