mine3

if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
  turtle.refuel()
end

print("Enter the width, height, and depth in that order.")

local width = tonumber(read())
local height = tonumber(read())
local depth = tonumber(read())

function mineforward ()
  for i=2, width, 1 do
    while turtle.detect() do
        turtle.dig()
      os.sleep(0.5)
    end
    turtle.forward()
  end
end

function invcheck ()
  if turtle.getItemCount(16) > 1 then
    return true
  else
    return false
  end
end

function finishmine()
  if height % 2 == 0 then
    turtle.turnRight()
    for i=1, height, 1 do
      turtle.down()
    end
  else
    turtle.turnLeft()
    turtle.turnLeft()
    mineforward()
    turtle.turnRight()
  end
end

local count = 0

  if turtle.detect() then

    for i=1, depth, 1 do
      while turtle.detect() do
        turtle.dig()
        os.sleep(0.5)
      end

      os.sleep(0.5)
      turtle.forward()
      turtle.turnRight()

      for i=1, height, 1 do
      mineforward()
      if i == height then
        finishmine()
      else
        turtle.digUp()
        turtle.up()
        turtle.turnLeft()
        turtle.turnLeft()
      end
    end
    count = count + 1
      if invcheck() then
         for i=1, count, 1 do
            turtle.back()
        end

        turtle.up()
        turtle.back()

        for i=1, 16, 1 do
      turtle.select(i)
      turtle.dropDown()
        end

  turtle.select(1)
        turtle.forward()
        turtle.down()

        for i=1, count, 1 do
          turtle.forward()
        end
      end
    end
  else
    print("Place me in front of a block!")
  end