tunnel

function makeWall(x,count)
  if x==1 then
    --Right wall
    turtle.turnRight()
    if not turtle.detect() then
      selectGlass()
      turtle.place()
    end
    turtle.turnLeft()
  elseif x==2 then
    --Above
    if count%6==0 then
      turtle.digUp()
      sleep(0.4)
      while turtle.detectUp() do
        turtle.digUp()
        sleep(0.4)
      end
      selectGlow()
      turtle.placeUp()
    end
    if not turtle.detectUp() then
      selectGlass()
      turtle.placeUp()
    end
  elseif x==3 then
    --Left wall
    turtle.turnLeft()
    if not turtle.detect() then
      selectGlass()
      turtle.place()
    end
    turtle.turnRight()
  elseif x==4 then
    --Bottom
    if not turtle.detectDown() then
      selectGlass()
      turtle.placeDown()
    end
  end

end

function selectGlass()
   local x = 0
   for i = 2,12 do
    turtle.select(16)
    if turtle.compareTo(i) then
      if turtle.getItemCount(i)>16 then
        turtle.select(i)
        x = 1
        return true
      end
    end
   end
   if x == 0 then
     return false
   end
end

function renewGlass()
  while not selectGlass() do
    selectChest()
    turtle.placeDown()
    turtle.suckDown()
    turtle.suckDown()
    if turtle.getItemSpace(11)<64 then
      selectGlow()
      turtle.dropDown()
    end
    turtle.dropDown()
    collectChest()
  end
end

function selectGlow()
  local x = 0
  for i = 2,12 do
    turtle.select(15)
    if turtle.compareTo(i) then
      if turtle.getItemCount(i)>16 then
        turtle.select(i)
        x = 1
        return true
      end
    end
  end
  if x == 0 then
    return false
  end
end

function renewGlow()
  while not selectGlow() do
    selectChest()
    turtle.placeDown()
    turtle.suckDown()
    turtle.suckDown()
    if turtle.getItemSpace(11)<64 then
      selectGlass()
      turtle.dropDown()
    end
    turtle.dropDown()
    collectChest()
  end
end

function selectChest()
  turtle.select(1)
end

function selectChest1()
  for i=1,12 do
    turtle.select(14)
    if turtle.compareTo(i) then
      turtle.select(i)
    end
  end
end

function collectChest()
  turtle.select(1)
  turtle.digDown()
end

function forward()
  renewGlass()
  renewGlow()
  if turtle.getItemCount(12)>=1 then
    turtle.select(12)
    turtle.drop()
  end
  makeWall(1,count)
  makeWall(2,count)
  turtle.dig()
  turtle.down()
  makeWall(1,count)
  turtle.dig()
  turtle.down()
  makeWall(1,count)
  makeWall(4,count)
  turtle.dig()
  sleep(0.6)
  while turtle.detect() do
    turtle.dig()
    sleep(0.4)
  end
  turtle.turnLeft()
  turtle.forward()
  turtle.turnRight()
  makeWall(4,count)
  turtle.dig()
  sleep(0.4)
  while turtle.detect() do
    turtle.dig()
    sleep(0.4)
  end
  turtle.up()
  turtle.dig()
  turtle.up()
  makeWall(2,count)
  turtle.dig()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnRight()
  makeWall(2,count)
  makeWall(3,count)
  turtle.dig()
  turtle.down()
  makeWall(3,count)
  turtle.dig()
  turtle.down()
  makeWall(3,count)
  makeWall(4,count)
  turtle.dig()
  sleep(0.4)
  while turtle.detect() do
    turtle.dig()
    sleep(0.4)
  end
  turtle.turnRight()
  turtle.forward()
  turtle.forward()
  turtle.turnLeft()
  turtle.up()
  turtle.up()
  turtle.forward()
  count=count+1
  return true
end

count = 0
term.clear()
term.setCursorPos(1,1)
print("Enter how many blocks forward you would like to mine: ")
blocks = io.read()
for i=1,blocks do
  forward()
end